WO1998034076A1

WO1998034076A1 - Cold storage apparatus

Info

Publication number: WO1998034076A1
Application number: PCT/JP1998/000417
Authority: WO
Inventors: Yoji Akahane; Sachio Miyazawa; Akihiro Koyama; Jun Takahashi; Yuichi Minamiyama
Original assignee: Gac Corporation
Priority date: 1997-01-31
Filing date: 1998-01-30
Publication date: 1998-08-06

Abstract

A cold storage apparatus which comprises a storage for storing an object being refrigerated, such as polished rice, in a substantially closed condition, and a Peltier cooling device for absorbing heat in the storage through side walls thereof to discharge the same. Heat generating equipment such as a heat exhaust unit of the Peltier cooling device and a power device for supplying and electric power to the Peltier cooling device are arranged facing one side surface of a housing to provide the cold storage apparatus, such as rice chest, which is small in size but high in cooling efficiency and can be used easily in general home. Further, heat from the power device and the heat exhaust unit of the Peltier cooling device is used to perform evaporative treatment on drain generated on an heat absorbing side, so that it is possible to provide the cold storage apparatus which is free of trouble involved in drain treatment and can be used safely.

Description

Description Refrigerator Technical field

The present invention relates to a refrigeration apparatus that can store refrigerated items such as grains at a low temperature, and particularly relates to a refrigeration apparatus suitable for a cold-keeping rice bottle that stores white rice at a low temperature. Background art

In recent years, household households and the like have been studying a cold storage type rice bin device as shown in Fig. 7 so that fresh white rice can be easily obtained even in the summer. The insulated rice bin device 90 shown in FIG. 7 has a vertically long housing 91, and a housing 92 for storing white rice is installed inside the housing 91. The storage 92 is surrounded by a heat insulating material 93 so that the temperature inside the storage 92 can be maintained. Below the storage 92, a weighing device 94 for dispensing the desired white rice from the storage 92 is installed. Below the weighing device 94, the weighing device 94 further dispenses. A take-out container 95 for taking out white rice is provided. Above the storage 92, a cooling device 98 including a heat absorption unit 96 and a heat removal unit 97 is provided. Cooling air is supplied from the cooling device 98 to the inside of the storage 92, so that the inside of the storage 92 can be cooled. For this reason, the rice bin device 90 cools the interior of the storage 92 to keep the white rice at a low temperature.

This rice bin device 90 can send cool air from above and efficiently cool the interior of the storage bin 92, but the cooling device 98 above the storage bin 92 It is necessary to remove the cooling device 98 when putting white rice into the storage bin 92 because the cooling bin 98 is installed. Therefore, it is not easy to use in homes and farms. In addition, since the storage bins 92 and the cooling units 98 are arranged vertically, the height of the rice bin unit 90 becomes large, and the rice bin units 90 should be arranged in a size that can be easily installed in ordinary households and farmhouses. Is difficult.

Further, in the rice bin device 90, there is a possibility that the water condensed in the heat absorbing unit 96 may drop into the storage 92. Further, since the white rice in the storage 92 is directly cooled by the cool air from the cooling unit 96, the white rice may dry and crack.

In order to correct such a problem, in the present invention, refrigerated items such as food containing white rice can be easily stored in a storage, and furthermore, a small refrigerated refrigerator having a high cooling capacity which can be easily installed in a general household or a farmhouse. It aims to provide equipment. Furthermore, it is possible to easily process drain generated in the cooling device while maintaining the humidity in the storage, and to provide a refrigeration device that does not impair the quality of the refrigerated material in the storage due to dew condensation. It is also an object of the present invention to provide. Disclosure of the invention

For this reason, in the present invention, the cooling device conventionally installed in the upper part is stored in the storage so that refrigerated items such as grains can be easily put in from the upper side and the height of the entire refrigeration device can be reduced. It is installed on the side (horizontal direction, horizontal direction). Furthermore, the width of the refrigeration unit is reduced by adopting a Peltier cooling device that can make the whole refrigeration unit a conventional type that circulates refrigerant, and the width of the refrigeration unit is shortened. It realizes a small and chilled refrigerator. Also, by placing the Peltier cooling device on the side of the storage, The heat absorbing portion of the multi-layer cooling device can indirectly absorb the heat in the storage via the side wall of the storage, and the storage can store the object to be refrigerated in a substantially sealed state. In addition, the drain generated in the heat absorbing section can be processed without returning to the storage.

When the Peltier cooling device is adopted, a power supply device for supplying power to the Peltier cooling device is required. However, in the refrigeration device of the present invention, the heat discharging portion of the Peltier cooling device and the power supply are arranged on one side of the housing. By arranging the devices vertically, the effect of heat discharged from these devices on the storage is minimized.

That is, the refrigeration apparatus of the present invention comprises: a storage that can store an object to be refrigerated in a substantially sealed state; a heat absorbing portion that can absorb heat inside the storage through a side wall of the storage; A Peltier cooling device provided with a heat-dissipating section capable of discharging heat from the Peltier cooling device, and a power supply device capable of supplying power to the Peltier cooling device. The storage, the Peltier cooling device, and the power supply device are stored in a housing. A Peltier cooling device is arranged on the side of the storage, and further, a heat-dissipating part and a power supply device of the Peltier cooling device are arranged vertically on one side of the housing. Features.

As described above, the refrigeration apparatus of the present invention can easily store refrigerated items such as grains including white rice in a storage from above, and can reduce both the vertical and horizontal sizes. It is compact and can be easily installed by ordinary households and farmers. The heat-generating power supply unit is installed in the same direction as the heat-dissipating part of the cooling device, and the heat-dissipating heat treatment can be easily performed by setting the heat-dissipating path in the same direction. For this reason, it is possible to provide a refrigeration apparatus having a high cooling capacity while being small. By cooling the storage through the side walls, the humidity in the storage can be maintained, and the drain generated by the cooling device can be prevented from returning to the storage. As a result, it is possible to provide a refrigeration apparatus in which the object to be refrigerated does not become too dry, and the quality of the object to be refrigerated is not impaired by dew condensation. In particular, in refrigeration systems where the upper part of the storage is used as an input port and the lower part is gradually narrowed for dispensing, so that grains such as rice bins can be stored, a Peltier cooling device is placed at the top of the housing and the power supply is placed at the bottom. By arranging the equipment, the space inside the housing can be used effectively.

Further, by providing a partition plate for separating the heat exhausting portion and the heat absorbing portion of the Peltier cooling device in the housing, it is possible to prevent the heat of the heat exhausting portion from affecting the heat absorbing portion and the storage. By arranging the power supply device on the heat-dissipating portion side of the partition plate, it is possible to prevent the storage from the power supply device or the heat influence on the heat-absorbing portion.

In addition, by providing a thermally separable partition wall between the heat exhaust part of the Peltier cooling device and the power supply, it is possible to reduce the efficiency of the heat exhaust part of the Bertier cooling device due to the heat exhausted from the power supply. Can be prevented. Therefore, it is possible to provide a refrigerating device having higher cooling efficiency.

A drain evaporation tray is installed at the position of the partition wall, and a drain recovery device is provided to guide the drain generated in the heat absorbing portion of the Peltier cooling device to the drain evaporation tray. The drainage can be evaporated by using the exhaust heat of the hot part. Therefore, there is no need to provide drain drain pipes and users to periodically drain the drain accumulated in the drain tank, etc. Equipment can be provided. In particular, in the present invention, the drain is evaporated by the exhaust heat of the power supply device, and the steam is heated by the heat of the exhaust heat section, and is not saturated steam, but is discharged out of the housing in a slightly dry and slightly wet state. it can. For this reason, it does not wet the surrounding walls and floor where the refrigerator is installed, It can be used safely in ordinary homes. In the Peltier cooling device, a heat absorbing portion and a heat discharging portion are provided with a Peltier element interposed therebetween, and the positions of the heat absorbing portion and the heat discharging portion are close to each other. For this reason, a drain recovery device can be realized with a simple configuration in which the drain recovery tray is arranged below the heat absorbing section and the drain recovery tray and the drain evaporation tray are connected by a short pipe. In addition, by providing the cooling fan above the evaporating tray, it is possible to promote the exhaust heat of the heat-dissipating portion and increase the circulation amount of the air supplied to the evaporating tray. Therefore, the cooling efficiency of the refrigerating device can be improved, and the amount of drain evaporation increases, so that the drain can be reliably evaporated.

Furthermore, by installing an evaporating fin using a hygroscopic material on the evaporating tray, the drain in the evaporating tray penetrates into the evaporating fin, thus increasing the drain evaporation area. In addition, it is possible to provide a refrigeration apparatus capable of improving drain treatment capacity and capable of self-processing drain with sufficient margin even when the refrigeration apparatus is installed in a humid environment. In addition, one end of the moisture absorbent can be extended upward to reach the heat exhaust section, and the heat of the heat exhaust section and the space between the evaporation tray and the heat exhaust section are effective for drain evaporation. Refrigeration equipment with extremely high self-processing capacity of drain can be provided.

In order to further increase the cooling capacity of such refrigeration equipment, it is also important to remove the drain smoothly in order to prevent the cooling part from being covered by the drain condensed on the heat absorbing part and reducing the heat transfer efficiency . In order to refrigerate the inside of the refrigerator indirectly through the side wall of the storage by the heat absorbing part, it is necessary to provide a circulation layer along which the air (cool air) cooled by the heat absorbing part circulates in the horizontal direction. Preferably, a circulation fan is provided to forcibly circulate the air in the circulation layer. In order to smoothly treat the drain against such an air flow, a long heat absorbing fin is required. If the hands are arranged vertically, they will be perpendicular to the cold air circulation direction. As a result, the pressure loss increases, and the air does not hit all the fins evenly, resulting in lower cooling efficiency.

For this reason, in the present invention, the heat-absorbing fins are arranged in the vertical direction so that the longitudinal direction of the fins coincides with the direction of air circulation, and further, the fins are inclined downward toward the tip in the cross-sectional direction, thereby draining. Is flowing smoothly and is cut. The drain generated on the heat absorbing fin is efficiently collected and flows down toward the tip of the fin, and drops downward from the tip. For this reason, it is possible to prevent the fin surface from being covered with water, thereby lowering the heat transfer efficiency and reducing the cooling effect. Furthermore, since the direction in which the heat absorbing fins extend and the direction in which the cool air flows match, the pressure loss is small, and the air evenly contacts the heat absorbing fins to cool efficiently. Therefore, it is possible to provide a refrigerator having low power consumption and a high cooling effect.

If the surface of the heat-absorbing fin is water-repellent, the drain will form droplets on the fin surface, and it will easily obstruct the flow of air on the fin surface, and the transmission efficiency will tend to decrease. Also, the drain will not flow smoothly toward the tip of the fin until the size of the water droplet reaches a certain level. In order to prevent this, it is desirable to treat the fin surface with hydrophilic treatment so that the drain always flows on the fin surface and drains efficiently. In addition, in the refrigeration unit suitable for grain containers, the upper part of the storage box serves as a grain inlet, and the lower part becomes a tapered payout part that gradually narrows toward the tip so as to pay out grain. When a heat-insulating intermediate container is provided inside the housing and provided with a funnel-shaped bottom corresponding to the part and the storage is installed inside the intermediate container. The position of the storage in the housing is accurately determined. In such a refrigerator for storing grains, when the intermediate container is stored in the housing, and the grain container is installed inside the housing, the tapered dispensing portion follows the funnel-shaped bottom portion of the intermediate container due to the weight of the grain container. The storage is automatically guided to a predetermined position inside the intermediate container. Therefore, when assembling the refrigerator, it is not necessary to determine the position of the storage in the housing in detail, and the assembling does not take time. At the same time, since the position of the storage is automatically determined, it is possible to provide a high-quality refrigeration device at low cost without failing in alignment.

In addition, when the storage is put in the intermediate container, the dispensing part and the bottom part of the intermediate container are in close contact and supported by the weight of the storage. High hermeticity. Furthermore, since the storage is supported via the intermediate container, a unique support structure for the storage is not required, and in this regard, a refrigeration apparatus having a simple structure and easy to assemble can be realized.

The intermediate container can of course be formed integrally with a heat-insulating material such as styrene foam, but by dividing it, the size is small and the shape can be easily formed. If the storage is a rectangular container with four sides and a rectangular cross-section, it is desirable to divide the intermediate container into at least two parts so that the intermediate container is abutted at the position facing the side wall. With such a shape, there is no seam at the corner where the cool air can escape most, and an intermediate container with a high degree of sealing can be obtained simply by abutting the divided intermediate containers. Furthermore, the heat can be cut off by inserting a part of the intermediate container divided between the heat absorbing portion and the heat discharging portion of the Peltier cooling device.

Also, by forming a plurality of spacers protruding to support the inside of the intermediate container on the side wall, the intermediate container also supports the side wall of the storage box. it can. Furthermore, since a circulating layer can be formed inside the intermediate container along which the air cooled by the heat absorbing portion can circulate in a substantially horizontal direction along the side wall of the storage, the refrigerator can cool the storage more uniformly and efficiently. Can be provided. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a perspective view showing an appearance of a rice bin device to which the present invention is applied. <FIG. 2 is a longitudinal sectional view showing a schematic configuration of the rice bin device shown in FIG. 1, and FIG. 3 is a rice bin device shown in FIG. 1. FIG. 4 is a cross-sectional view showing a schematic configuration of the apparatus. FIG. 4 is a graph showing a result of measuring a drain evaporation ability. FIG. 5 is an enlarged view showing a cross section of the heat absorbing portion shown in FIG.

FIG. 6 is an expanded view of the rice bin device shown in FIG.

FIG. 7 is a longitudinal sectional view showing an example of a conventional rice bin device. BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, the refrigeration apparatus of the present invention will be described in more detail using a rice bin apparatus capable of refrigerated storage of white rice as an example. FIG. 1 is a perspective view showing the appearance of a rice bin device 1 according to the present invention. FIG. 2 and FIG. 3 show a schematic configuration of the rice bin device 1 of this example using a vertical section and a horizontal section. As shown in these figures, the rice bin device 1 of this example is provided with a substantially rectangular parallelepiped housing 2 which is long in the vertical direction, and stores therein white rice 10 for storing white rice therein. Peltier that cools the inside of storage 10 by cooling the air in circulation layer 11 formed between storage container 10 and storage container 10 A cooling unit 30 and a power unit 40 for supplying power to the Peltier cooling unit 30 and the like are housed. A lid 3 that can be opened and closed when pouring white rice is provided on a portion of the upper surface of the housing 2 that is located above the storage box 10. A weighing device 7 for measuring the white rice 6 dispensed from the storage 10 and a container 8 for receiving the white rice 6 dispensed by the weighing device 7 are provided below the storage 10. Are located. The weighing device 7 can be operated from the front 9a of the housing 2, and the container 8 can be inserted and removed from the front 9a.

Storage structure 10 in this example is a structure suitable for grain storage that can receive white rice 6 from the upper input port 12 and discharge an appropriate amount of white rice 6 from the lower payout section 13 to the weighing device 7. It has become. The dispensing part 13 is formed in a taper shape that gradually narrows toward the lower end, which is the connection port 13a with the weighing device 7, so that the white rice 6 can be smoothly discharged without being clogged. It has become. The storage part 14 between the input port 12 and the discharge part 13 is a rectangular parallelepiped that is relatively long and has a long rectangular shape surrounded by a side wall 15 of a metal plate with good heat transfer. A circulation layer 1 1 for circulating cool air around 1 5 is formed, and the intermediate container 20 of this example that covers the outside of the storage box 10 is a molded article of Styrofoam with excellent heat insulation. The heat-insulating wall 21 that surrounds the side wall 15 that constitutes the storage part 14 of 10 from outside on all four sides, and the tapered dispensing part 13 that is located below this heat-insulating wall 21 A funnel-shaped bottom portion 22 is provided. The heat-insulating intermediate container 20 of this example is formed by being divided into two heat-insulating units 23 a and 23 b arranged on the left and right as viewed from the front side 9 a, and these are housed. By assembling the surfaces along the side walls 15 of 10, one heat insulating container 20 can be formed. Further, a spacer 29 protruding inward at an appropriate pitch is provided inside the intermediate container 20, and the spacer 29 causes the side wall 1 of the storage 10 to be in the intermediate container 20. 5 as well as providing an appropriate space between the intermediate container 20 and the side wall 15 so that it can be used as the circulating layer 11. Is wearing.

As the cooling unit 30 of the rice bin device 1 of this example, a Peltier cooling unit 30 that can be arranged in a small and narrow space is used.ぺ The Lutier cooling unit 30 can cool by transferring heat from the heat absorbing side 32 to the heat discharging side 33 by supplying power to the Peltier element. The Peltier cooling unit 30 in this example is composed of an element unit 31 including Peltier elements arranged in a matrix, a heat sink 32 connected to the heat absorbing side, and a heat sink 32 connected to the heat absorbing side. It is equipped with a connected heat-sink side heat sink 33. In the rice bin device 1 of this example, the cooling unit 30 is arranged substantially horizontally (horizontally) with the storage box 10, and the heat sink 32 on the heat absorbing side projects into the circulation layer 11 and the circulation layer 1. 1 is cooled so that the heat-dissipating heat sink 33 faces the rear surface 9 b of the housing 2 so as to easily release heat. A partition plate 39 is provided between the heat-dissipating heat sink 3 3 and the heat-sinking heat sink 32 from above to below the housing 2. Circuit is not generated. Further, a part of the heat insulating wall 21 of the intermediate container 20 is inserted between the heat sink side heat sink 33 and the heat sink side heat sink 32 to be insulated.

A power supply unit 40 is disposed below the heat-dissipating heat sink 33 in the section 5 of the heat-dissipating side (back side) 9b of the housing 2 separated by the partition plate 39. In this example, the power supply unit 40 is installed with the partition plate 39 as a support.

Further, in the heat-dissipating section 5, a drain evaporation tray 53 is provided between the heat-dissipating heat sinks 33 arranged above and below and the power supply unit 40. The drain evaporation tray 53 is collected by a drain collection tray 51 installed below the heat sink 32 in the circulating layer 11. The drain 50 is guided through the drain pipe 52. The drain 50 accumulated in the drain evaporation tray 53 evaporates by receiving heat from the power supply unit 40, and is further heated by the heat-dissipating heat sink 33 to reduce the humidity. Released from housing 2. In addition, in the rice bin device 1 of this example, a cooling fan (exhaust heat fan) 45 is provided between the drain evaporation tray 53 and the exhaust heat sink 33, so that the exhaust heat The amount of air circulating through the heat sink 33 is increased to improve the exhaust heat efficiency, and the evaporation efficiency in the drain evaporation tray 53 is also improved.

Since the Peltier cooling unit 30 is arranged beside the storage box 10 in the rice bin device 1 of this example, the rice bin device 1 in comparison with the conventional refrigerated rice bin device 1 shown in FIG. Height can be reduced. In addition, since the cooling unit 10 is arranged on the side, the structure of the lid 3 for charging the white rice 6 to be refrigerated from above is simplified, the opening and closing is easy, and the airtightness is improved. improves. Furthermore, the adoption of a thin, compact Peltier cooling unit 30 prevents the rice bin device 1 from spreading in the depth direction, making it compact and easy to use, and with sufficient storage capacity. Equipment 1 can be provided.

In addition, the Peltier cooling unit 30 is placed beside the storage box 10 so that the heat inside the storage box is absorbed through the side wall 15 of the storage box. The white rice 6 can be stored in the storage 10 almost in a closed state without entering. In addition, the rice bottle device 1 of this example can be sealed with the lid 3 at the upper part, and the meter 3 is used for daily dispensing, so that the lid 3 does not need to be opened. Therefore, once the white rice 6 is put into the storage 10, there is little opportunity for outside air or cold air to enter the storage 10, and the white rice can be held in a stable state. As a result, the white rice 6 is exposed to cold air and dries, causing cracks, or storing humid outside air. There is almost no danger of white rice getting wet due to condensation in the refrigerator, and white rice can be refrigerated and stored in an extremely good condition. In addition, by cooling the storage 10 indirectly, it is possible to treat the drain generated in the heat sink 32 on the heat absorbing side of the cooling unit 30 so as not to enter the storage 10. .

Further, in the rice bin device 1 of the present example, the Peltier cooling device 30 is arranged at the upper part of the housing 2 along with the storage case 10, so that a space below the heat sink heat sink 33 is vacant. Therefore, heat-generating devices such as a power supply device 40 that supplies power to the Peltier cooling device 30 are placed one above the other in the heat-dissipating compartment 5 facing the back surface 9 b of the housing 2 to effectively use the space. are doing. Further, these heat-generating devices are collected and arranged on one side of the housing 2 so as to easily perform the exhaust heat treatment. In particular, the power supply unit 40 of the present embodiment converts the AC power into DC power using an AC / DC converter or the like so that the Peltier cooling device 30 can be operated with a household AC power source. Can be supplied. For this reason, a large amount of heat is generated from the converter and the like. If the converter is simply installed on the bottom plate 2b of the housing 2, there is a possibility that the entire temperature inside the housing will rise due to the released heat. In addition, by collecting and arranging the devices that generate heat, they can be arranged at a position away from the storage 10 to be cooled, so that the thermal effect on the storage 10 can be suppressed. In this example, the heat of the heat discharge section 5 is not affected by the heat of the heat storage section 10 or the circulation layer 11 by further separating the heat discharge section 5 by the partition plate 39.

If devices for exhausting heat are collected and arranged in one section, the efficiency may decrease due to the exhaust heat from each device. Therefore, in the rice bin device 1 of this example, it is desirable that the power supply unit 40 and the heat sink 33 on the heat-dissipating side are also separated by an appropriate partition wall. In this example, by installing the drain evaporation tray 53 at that position, the exhaust heat from the power supply unit 40 does not directly affect the exhaust heat sink 33. . Furthermore, in the device 1 of this example, the drain 50 generated in the rice bin device 1 can be self-evaporated by using the exhaust heat of the power supply unit 40, so that a drain tank is provided and the drain is periodically provided to the user. It is possible to save troublesome work or construction such as disposing of the wastewater or laying a drain discharge pipe from the rice bin 1 to a place where the drainage is provided. Also, the evaporated drain 50 is heated by the heat of the heat-dissipation-side heat sink 33, and is released from the housing 2 to the atmosphere in a dry state instead of a saturated state. Therefore, it is possible to provide a rice bin device that is extremely easy to handle without dew condensation occurring around or near the housing 2 due to the air discharged from the exhaust heat section 5.

Further, in the rice bin device 1 of the present embodiment, the drain evaporation tray 53 is made of metal, and the heat of the power supply unit 40 is transmitted to the drain 50 to improve the evaporation efficiency. In addition, a heat exhaust fan 45 is installed above the tray 53 to increase the amount of circulation and increase the drain evaporation efficiency. By providing the exhaust heat fan 45, the amount of air passing through the exhaust heat sink 33 increases, so that the exhaust heat efficiency can be improved.

In addition, in the rice bottle device 1 of this example, four evaporation fins 55 using a moisture absorbent were installed in the evaporation tray 53, and the rice bottle device 1 generated even under severe conditions of high temperature and humidity. The drain can be self-processed. The moisture absorbing material forming the evaporating fin 55 has water absorbency, and a thin material is suitable for enhancing the evaporating effect so that an appropriate number of fins can be installed in a narrow space. For example, it is possible to use a felt cloth used as a horticultural water retention material, or a glass fiber used as a humidifier for a humidifier formed in a honeycomb shape. Also refrigerator Polyolefin-based resin molded into a plate or polyester-based nonwoven fabric used for humidification is suitable for evaporating fins because it is appropriately hard and easy to process.

The evaporating fins 55 are arranged so as to extend in the vertical direction, and the drain 50 guided to the evaporating tray 53 is absorbed by these evaporating fins 55 to evaporate. It reaches the surface of fin 55 and evaporates from its surface. Therefore, by providing the evaporating fin 55, the evaporation area of the drain 50 can be made very large, and as a result, the evaporating capacity can be improved. Of these evaporating fins 55, one end 55a of the two evaporating fins extends to reach the lower edge of the heat-dissipating heat sink 33 of the Peltier cooling device 30. It is designed to secure a wider area of emission. Further, by extending the evaporating fin 55 to the vicinity of the heat sink 33, the surface temperature of the evaporating fin 55 in the vicinity increases due to the heat radiation of the heat sink 33, so that The amount of evaporation can be further increased.

The number and length of these evaporating fins 55 may be determined so as to obtain sufficient capacity to evaporate the amount of drain 50 generated under adverse conditions of high temperature and high humidity. Accordingly, it is possible to extend all the fins 55 to the heat sink side heat sink 33, and the number of the fins 55 is not limited to four, and even if the number is three or less. Good, or even 5 or more.

Figure 4 shows the difference in drain evaporation capacity between the case where the evaporation fin 55 is installed in the evaporation tray 53 and the case where the evaporation fin is not installed. In addition, in the graph of FIG. 4, the natural evaporation amount of the drain when heat is not applied to the evaporation tray 53 is set to 1, and the evaporation amount is shown by a ratio to the natural evaporation amount. First, the amount of drain that can be evaporated by the heat radiation of the power supply unit 40 using the evaporation tray 53 that does not have the evaporation fin 55 is determined. It is indicated by the dotted line A. Further, the amount of drain that can be evaporated by the heat radiation of the power supply unit 40 using the evaporation tray 53 provided with the evaporation fin 55 is indicated by a dashed-dotted line B. The drain evaporation amount B shown in this figure is the processing amount when four evaporation fins that are short enough not to reach the heat sink on the exhaust side are installed in the evaporation tray 53. In this figure, the solid line C shows the amount of dehumidified water (the amount of drain generated when external air is introduced and cooled) relative to the relative humidity of the external air. Note that these characteristics shown in this figure are obtained when the outside air temperature is 30 ° C.

As can be seen from this figure, when the evaporating fin 55 is installed, the evaporation area of the drain 50 is increased, and thus the evaporation processing capacity is improved as described above. For example, when the relative humidity of the outside air is 65%, the amount of drain evaporation can be approximately doubled by installing the evaporating fin 55. In FIG. 4, if the evaporating fin 55 is not installed, the amount of evaporation processing reaches a limit when the outside air relative humidity is 75%. As a result, drainage generated when the relative humidity further increases cannot be processed. Therefore, in the area D where the outside air relative humidity exceeds 75%, the drain 50 starts to accumulate in the evaporation tray 53. On the other hand, by installing the evaporating fins 55, the amount of evaporation increases, so that the processing can be performed up to a condition where the relative humidity of the outside air is about 82%.

In the rice-bottle device 1 of this example, outside air only enters the inside of the circulating layer 1 1 from which drainage occurs through the gaps between the joints of the side plates 2 a of the housing 2 and the joint of the lid 3. The processing capacity to constantly dehumidify the air with a humidity of 82% is more than sufficient. Therefore, by providing the evaporating fins 55, it is possible to provide the rice bin device 1 having a sufficient drain treatment capacity even when operated in bad conditions of high temperature and high humidity.

Thus, the rice bin device 1 of this example is provided with the drain evaporation tray 53. The system is capable of self-treatment of drain under most conditions by installing it.Furthermore, by providing the evaporating fins 55, there is no drain leakage etc. Can be placed. Therefore, the rice bin device 1 of this example is a rice bin device that can be used easily and safely without worrying about drainage of drainage, and is very easy to use even in ordinary households.

If the drain generated in the heat sink 32 is not removed smoothly from the heat sink 32, the heat sink 32 will be covered with the drain and the heat exchange efficiency will be reduced. For this reason, in the rice bin device 1 of the present example, a base 35 which is a square flat plate is provided on the heat absorbing side heat sink 32 of the Peltier cooling device 30 and a plurality of fins 36 are provided on the surface thereof in the longitudinal direction thereof. Are installed side by side vertically (upward and downward) so that they extend almost horizontally. Further, each of the fins 36 is enlarged, as shown in FIG. 5, so that the transverse direction H is inclined downward toward the tip 36a, and the drain 50 generated on the fin 36 is formed. Is easy to flow downward.

By arranging a plurality of fins horizontally so as to extend in the vertical direction, the generated drain can flow downward, and the fin surface can be prevented from being covered with the drain. However, in the rice bin device 1 of this example, cold air circulates in the circulation layer 11 in a substantially horizontal direction so that the entire side wall 15 of the storage 10 can be cooled almost uniformly. For this purpose, a circulation fan 37 is installed in the circulation layer 11 in the horizontal direction to secure an appropriate circulation speed. If a number of vertically extending fins are installed in the horizontal direction against the air circulating in the horizontal direction, the fins themselves become resistance and impede the flow of cool air. In addition, since the fins impede the flow of air, all fins are not evenly exposed to air and the cooling efficiency is reduced. In contrast, in the heat sink 32 for heat absorption of the present example, the fins 36 extend in the horizontal direction, so that the air is evenly distributed to each fin 36 without obstructing the flow of air in the horizontal direction. Contact Therefore, heat exchange is performed efficiently, and the air in the circulating layer 11 can be cooled. Furthermore, since the fin 36 here is inclined downward toward the tip 36a, the drain 50 generated on the fin 36 also smoothly flows toward the tip 36a and is discharged. Is done. For this reason, the surface of the fin is not covered with the drain 36, and the heat exchange efficiency does not decrease.

Furthermore, the surface of each of the fins 36 has been subjected to a hydrophilic treatment such as an alumite treatment, so that the surface of the fins 36 is rougher than the fin surface which has been subjected to a water-repellent treatment. I have. When the water-repellent treatment is performed, the surface of the fin 36 becomes smooth, but the drain 50 generated on the fin 36 becomes water droplets and becomes difficult to flow on the fin surface due to surface tension or the like. However, transmission efficiency may be reduced. On the other hand, in the Peltier cooling device 30 of the rice bottle device 1 of this example, by performing the hydrophilic treatment, even a small amount of the drain 50 can easily flow on the fin surface. For this reason, the generated drain is prevented from flowing continuously and being dripped and discharged from the tip 36a, and the heat transfer efficiency is prevented from lowering. The drain 50 discharged from the tip 36 a is collected by the drain recovery tray 51 disposed below the heat sink 32 as described above, and is further collected by the drain evaporation tray 53. It is guided and evaporated.

In the rice bin device 1 of the present example, since the cooling efficiency is prevented from being reduced by the drain, a sufficient cooling capacity can be exhibited even in an environment of high temperature and high humidity. Furthermore, since the cooling efficiency can be kept high, the power consumption during refrigerated storage can be reduced, and rice equipment with low running cost can be provided. In addition, since the drain does not accumulate on the fins, the accumulated drain even if the rice bin 1 is moved during operation. When the white rice 6 in the storage 10 is wet and the white rice 6 in the storage 10 is wet, and the weighing device 7 or the take-out container 8 is wet, the quality of the white rice that has been stored with high quality may be deteriorated. Does not occur. In addition, it is possible to prevent problems such as draining at once, which overflows into the drain collection tray and wets the floor.

As described above, the rice bin device 1 of the present example has a fine-grained countermeasure against the drain, and has a sufficient ability to cope with the generated drain. Of course, there is a method of completely closing the circulating layer 11 to prevent drainage.However, the cost required to make the intermediate container 20 almost completely airtight is high, and the assembly time is long. Become. On the other hand, the rice bin device 1 of the present example efficiently collects the drain and performs the evaporating process, so that the airtightness of the intermediate container 20 is not so required, and the structure is low cost and easy to assemble. Can be adopted. FIG. 6 is an exploded view of the main components constituting the rice bin device 1 of this example. In the rice bin device 1 of this example, the periphery of the storage box 10 is surrounded by an intermediate container 20 which is divided into two heat insulating units 23a and 23b, and the intermediate container 20 further includes a side plate 2a and a bottom plate. It is stored in a housing 2 consisting of 2 b. A partition plate 39 is arranged at the rear 9 b of the housing 2. Inside the partition plate 39, the heat sink 3 2 on the heat absorbing side of the cooling unit 30 facing the side wall 15 of the storage portion 14 of the storage 10. Is mounted, and a heat-dissipating heat sink 33 is mounted on the outside. Further, a power supply unit 40 is attached below the heat-dissipating heat sink 33.

The respective insulation units 23a and 23b constituting the intermediate container 20 are formed almost symmetrically except for details, and the respective insulation units are stored in the storage unit 10 (storage unit). ) Side insulation walls 24 surrounding the outside of the left and right side walls 15 forming part 14, and the side insulation walls 2 The front side of 4 9 The front insulation wall 2 5 extending from the end of a to cover almost half of the side wall 15 composing the front of the storage part 1 4, and conversely, the rear of the side insulation wall 24 A rear heat insulating wall portion 26 is provided extending from the end of 9b so as to surround substantially half of the side wall 15 constituting the rear of the storage portion 14. Therefore, when the heat insulation units 23a and 23b are combined, the front insulation wall 25 of each of the insulation units 23a and 23b is placed substantially at the center of the side wall 15 constituting the front of the storage room 10, while the rear insulation wall is formed. The wall portion 26 is abutted substantially at the center of the side wall 15 constituting the rear of the storage 10. As described above, in the heat insulation units 23a and 23b of this example, all the corner portions where gaps are easily generated are formed in a pre-connected shape, and the sealing performance is extremely high. .

The lower side of the heat insulating wall 21 composed of these heat insulating walls 24, 25, and 26 forms the bottom surface 22 when the two heat insulating members 23a and 23b are brought together. The shape of the inclined portion 28 corresponds to the tapered payout portion 13 of the storage box 10, and has a funnel shape of a truncated pyramid that narrows downward. I have. Furthermore, the tip 28a of the ramp 28 is missing so as to form an opening 22a through which the tip 13a of the grain container passes. A concave notch 26 a is provided in a part of the rear heat insulating wall 26 so that the heat sink 32 can be attached to the heat sink heat sink 32. Only the heat sink 32 on the heat absorbing side of 0 protrudes into the circulating layer so that the cool air can be sent efficiently. A plurality of spacers 29 projecting inward are formed on the inner surface (the side facing the storage box 10) of each of the heat insulating walls 24, 25, and 26. The container 29 comes into contact with the side wall 15 of the storage, and a predetermined gap for forming the circulation layer 11 is opened so that the storage 10 can be supported inside the intermediate container 20. Such heat insulating members 23a and 23b are placed inside the housing 2. When put in and combined from the left and right, a heat-insulating intermediate container 20 having an inner shape corresponding to the shape of the storage 10 is formed. Therefore, when the storage box 10 is put into the intermediate container 20, the storage box 10 automatically fits in a predetermined place, so that the position is determined accurately. Therefore, the rice bin device 1 can be easily assembled. For example, the lower part of the storage 10 is a tapered dispensing part 13, and the bottom part 22 of the intermediate container 20, which is in contact with this, is formed in a funnel shape. When it is put in 0, the payout section 13 of the storage box 10 moves on the bottom section 2 2 by its own weight, and is eventually led to a position where the payout section 13 and the bottom section 22 are in close contact with each other. At this time, the tip 13a of the dispensing part 13 is guided to the opening 22a of the bottom part 22, so that the position is automatically adjusted to the weighing device 7 installed below the opening 22a. . In addition, the side wall 15 of the storage portion 14 is supported by spacers 29 protruding inside the heat insulating walls 24, 25, and 26, so that an appropriate gap for the circulation layer 11 is formed. Open to determine the position of storage box 10.

In addition, the intermediate container 20 also has a function of supporting the storage 10, the payout portion 13 is supported by the bottom portion 22, and the storage portion 14 is provided with the heat insulating walls 24, 25, and 24. Backed by 26. Therefore, members such as metal fittings for attaching the storage 10 to the housing 2 are not required. Further, since the storage 10 is entirely supported from the periphery by the intermediate container 20 via the spacer 29, the load of the white rice is dispersed and supported. Therefore, the strength of the storage box 10 itself does not need to be so high, and the rice bin device 1 can be reduced in weight overall.

As described above, the position of the rice bin device 1 of the present example is determined only by installing the storage box 10 inside the intermediate container 20, and can be assembled in a short time without any trouble and with high accuracy. In addition, the molded insulation unit 23 a Insulation work is completed only by assembling the 2nd and 23b, and there is no need to attach insulation to the housing 2. Therefore, a high quality rice bin device 1 can be manufactured at low cost.

Furthermore, in the rice bin device 1 of the present example, the dispensing portion 13 adheres to the bottom portion 22 of the intermediate container, which is a heat insulating material, by its own weight, and the degree of adhesion further increases when the white rice 6 enters the storage box 10. . In addition, since the corner portions of the heat insulating wall 21 are integrally formed in advance, there is little leakage of cold air and invasion of outside air, and the rice bin device 1 having high heat insulating performance can be easily realized. Of course, the sealing performance can be further improved by integrally molding the intermediate container 20. However, it is difficult to form a box with a complicated shape with a bottom using thermal insulation such as styrofoam, and the intermediate container becomes expensive. On the other hand, in this example, since the heat insulation units 23a and 23b divided into two are used, the intermediate container 20 is inexpensive, and the production cost of the rice bin device 1 can be reduced. Furthermore, since the front 9a and the rear 9b of the storage box 10 are abutted against each other, the rear insulation wall 26 is inserted along the partition plate 39, so that the Peltier cooling device 30 Heat insulation between the heat sink 32 and the heat sink 33 can be achieved.

As described above, the rice bin device 1 according to the present invention has extremely good heat insulating properties, and can efficiently cool the white rice in the storage using the cooling capacity of the Peltier cooling unit 30. Therefore, it is possible to prevent white rice from developing pests and fungi even under adverse conditions such as high temperature and high humidity, and to avoid low temperature damage such as cracking or discoloration of rice and quality deterioration due to dew condensation as described above. Further, according to the present invention, there is provided a refrigeration apparatus which has a low running cost, is compacted in its entirety, and has a drain self-processing capability, which can be easily installed and used by ordinary households and farmers. it can. Industrial applicability

The refrigeration apparatus of the present invention is a refrigeration apparatus that can indirectly cool a storage using a Peltier cooling unit, and is entirely compact and has a heat-dissipating side and a heat-absorbing side including a power supply unit. It has a separate cooling efficiency structure and can be easily installed and used in ordinary households. For this reason, the present invention can be applied to a rice bin device for storing white rice as described above and a refrigerator device for refrigerately storing many items such as other grains, and fresh foods, as well as the rice bin device.

Claims

The scope of the claims

1. A storage that can store the refrigerated material in a substantially sealed state, a heat absorbing portion that can absorb heat inside the storage through a side wall of the storage, and a heat exhaust that can discharge the absorbed heat. A Peltier cooling device with a section,

A refrigeration device having a power supply device capable of supplying power to the Peltier cooling device, wherein the storage, the Peltier cooling device, and the power supply device are stored in a housing;

The Peltier cooling device is arranged on a side of the storage, and a heat exhaust unit of the Peltier cooling device and the power supply device are vertically arranged so as to face one side surface of the housing. Refrigeration equipment.

2. In the housing, there is provided a partition plate for partitioning a heat discharging portion and a heat absorbing portion of the Peltier cooling device, and the power supply device is disposed on the heat discharging portion side of the partition plate. Item 1. The refrigerator according to Item 1.

3. The Berch :! : The refrigeration apparatus according to claim 1, further comprising a partition wall capable of separating a heat-dissipating portion of a cooling device and the power supply device.

4. A drain evaporating tray installed between the exhaust unit of the Peltier cooling device and the power supply unit;

2. The refrigerator according to claim 1, further comprising: a drain recovery device that guides drain generated in a heat absorbing portion of the Peltier cooling device to the drain evaporation tray. 3. apparatus.

5. A cooling fan for promoting heat exhaustion of the heat exhausting portion, wherein the cooling fan is provided between the heat exhausting portion and the evaporation tray. A refrigeration apparatus according to claim 1.

6. The refrigerating apparatus according to claim 4, wherein an evaporating fin using a hygroscopic material is installed on the evaporating tray.

7. The refrigeration apparatus according to claim 6, wherein one end of the hygroscopic material extends upward to reach the heat exhausting portion.

8. A circulating layer through which air circulates in a substantially horizontal direction along the side wall of the storage, and the heat absorbing portion provided with a plurality of heat absorbing fins is arranged so as to protrude into the circulating layer. ,

2. The refrigerator according to claim 1, wherein the heat absorbing fins are arranged so that a longitudinal direction thereof extends in a circulation direction of the air, and a cross-sectional direction thereof is inclined downward toward a tip.

9. The refrigeration apparatus according to claim 8, further comprising a circulation fan for forcibly circulating the air in the circulation layer.

10. The refrigerator according to claim 8, wherein the surface of the heat absorbing fin is subjected to a hydrophilic treatment.

1 1. The upper part of the storage is a grain inlet, and the lower part is tapered gradually toward the tip so as to discharge the grain. It is a grain container that became the payout part,

It has a funnel-shaped bottom part corresponding to the payout part, has a heat-insulating intermediate container arranged outside the storage in the housing, and when the storage is installed inside the intermediate container, The refrigeration apparatus according to claim 1, wherein the bottom portion is in close contact with the payout portion, and positioning of the storage in the housing is performed.

1 2. The storage box is a container with a rectangular cross section composed of the side walls on all four sides.

The refrigeration apparatus according to claim 11, wherein the intermediate container is divided into at least two parts so as to abut each other at a position facing the side wall.

13. A plurality of spacers are formed inside the intermediate container so as to protrude to support the side wall, and when the storage is installed inside the intermediate container, the space is provided between the storage and the intermediate container. 12. The refrigeration apparatus according to claim 11, wherein a circulating layer is formed along the side wall of the storage so that the air cooled in the heat absorbing portion can circulate in a substantially horizontal direction.