CN105444483A - Hydraulic filling type screw refrigerating machine ice maker unit - Google Patents
Hydraulic filling type screw refrigerating machine ice maker unit Download PDFInfo
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- CN105444483A CN105444483A CN201510743852.4A CN201510743852A CN105444483A CN 105444483 A CN105444483 A CN 105444483A CN 201510743852 A CN201510743852 A CN 201510743852A CN 105444483 A CN105444483 A CN 105444483A
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Abstract
The invention provides a hydraulic filling type screw refrigerating machine ice maker unit. The hydraulic filling type screw refrigerating machine ice maker unit comprises a compressor, an evaporation condenser, an external oil separator, a low-pressure circulation barrel, a spiral evaporator and a liquid storage device, wherein a refrigerant outlet of the compressor is connected with a refrigerant inlet of the external oil separator; a refrigerant outlet of the oil separator is connected with an inlet of the evaporation condenser; an outlet of the evaporation condenser is connected with an inlet of the liquid storage device; an outlet of the liquid storage device is connected with a refrigerant inlet of the low-pressure circulation barrel; a refrigerant outlet of the low-pressure circulation barrel is connected with a refrigerant inlet of the spiral evaporator; a refrigerant outlet of the spiral evaporator is connected with an air inlet of the low-pressure circulation barrel; an air outlet of the low-pressure circulation barrel is connected with a refrigerant inlet of the compressor. The hydraulic filling type screw refrigerating machine ice maker unit integrates the characteristics of energy saving and good refrigeration effect of ammonia refrigeration and safety and convenience of Freon, largely improves the refrigeration efficiency of a system taking Freon as refrigerants, obviously improves the comprehensive energy efficiency ratio, lowers energy consumption and has great market competitiveness.
Description
Technical field
The present invention relates to technical field of central air, particularly relate to a kind of flooded screw mechanism ice maker group.
Background technology
Current ice making unit has multiple refrigeration modes, and divide by cold-producing medium and then mainly contain freon refrigeration and ammonia refrigeration two kinds, freon refrigeration pattern uses for many years, and system maturation, thus security is high, and maintenance cost is low.And ammonia ice making is relative to its good refrigeration effect of freon, ice making efficiency is high, because the principle respectively based on two kinds of refrigeration systems of two kinds of cold-producing mediums is different, equipment arranges difference, cannot carry out general, therefore, existing ice making unit well cannot take into account the advantage of two kinds of ice making principles, thus also just cannot realize energy-conservation and safe two kinds of effects simultaneously.
Therefore, prior art needs to improve further.
Summary of the invention
In view of the deficiencies in the prior art, the invention reside in and a kind of flooded screw mechanism ice maker group is provided, be intended to solve existing ice making unit and cannot realize energy-conservation and problem that is high security simultaneously.
Technical scheme of the present invention is as follows:
A kind of flooded screw mechanism ice maker group, wherein, comprise compressor, evaporative condenser, external oil eliminator, low pressure recycle bucket, spiral evaporator and reservoir, the refrigerant outlet of described compressor connects the refrigerant inlet of external oil eliminator, the refrigerant outlet of described oil eliminator connects the import of evaporative condenser, the outlet of described evaporative condenser connects the import of reservoir, the outlet of described reservoir connects the refrigerant inlet of low pressure recycle bucket, the refrigerant outlet of described low pressure recycle bucket connects the refrigerant inlet of spiral evaporator, the refrigerant outlet of described spiral evaporator is connected with the air inlet of low pressure recycle bucket, the described gas outlet of low pressure recycle bucket is connected with the refrigerant inlet of compressor, refrigerant gas after compressor compresses enters into evaporative condenser condensation after external oil eliminator is separated, after condensation, cold-producing medium enters in reservoir, in described reservoir, cold-producing medium enters into low pressure recycle bucket as required and flows into spiral evaporator further and carries out heat exchange, complete the cold-producing medium after heat exchange gets back in low pressure recycle bucket through air inlet from spiral evaporator, and the refrigerator gas in low pressure recycle bucket is entered in compressor by gas outlet.
Described flooded screw mechanism ice maker group, wherein, the cold-producing medium used in described flooded screw mechanism ice maker group is freon.
Described flooded screw mechanism ice maker group, wherein, described low pressure recycle bucket setting position, higher than spiral evaporator setting position, makes the cold-producing medium in low pressure recycle bucket enter spiral evaporator under gravity through refrigerant outlet.
Described flooded screw mechanism ice maker group, wherein, the difference in height of described low pressure recycle bucket and spiral evaporator is 1.2-2.0 rice.
Described flooded screw mechanism ice maker group, wherein, described flooded screw mechanism ice maker group also comprises the machine oil storage tank for storing machine oil, machine oil outlet on described external oil eliminator is connected with the import of machine oil storage tank, and the machine oil outlet of described machine oil storage tank is connected with the engine oil inlet on compressor.
Described flooded screw mechanism ice maker group, wherein, described spiral evaporator comprises the input pipe being provided with refrigerant inlet and the efferent duct being provided with refrigerant outlet, spiral comb has been arranged side by side between described input pipe and efferent duct, spiral comb two ends are connected with efferent duct with input pipe respectively, wherein, one is provided with for separating of the division board of cold-producing medium and machine oil, the space up and down that described division board becomes to be connected along input pipe Diameter distribution thus by input pipe inside division in described input pipe.
Described flooded screw mechanism ice maker group, wherein, described input pipe is provided with return line and is connected to compressor by return line, described return line is provided with jet pump, in described input pipe, the machine oil of deposition enters compressor by jet pump along return line.
Described flooded screw mechanism ice maker group, wherein, described compressor is set to multiple stage, and the closed circuit of each compressor is in parallel.
Beneficial effect: the invention provides a kind of flooded screw mechanism ice maker group, this ice making unit absorbs that ammonia refrigeration is energy-conservation, the feature of good refrigeration effect and freon safe ready, greatly improve the refrigerating efficiency using freon as refrigerant system, comprehensive energy efficiency ratio is obviously promoted, energy consumption significantly reduces, unit running security is high, makes flooded screw of the present invention mechanism ice maker group have the extremely strong market competitiveness in ice-making technology field.
Accompanying drawing explanation
Fig. 1 is the configuration diagram of flooded screw mechanism ice maker group in the specific embodiment of the invention.
Fig. 2 is the structural representation of spiral evaporator in the specific embodiment of the invention.
Detailed description of the invention
The invention provides a kind of flooded screw mechanism ice maker group, for making object of the present invention, technical scheme and effect clearly, clearly, the present invention is described in more detail below.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
A kind of flooded screw mechanism ice maker group as shown in Figure 1, wherein, comprise compressor 100, evaporative condenser 200, external oil eliminator 300, low pressure recycle bucket 400, spiral evaporator 500 and reservoir 700, the refrigerant outlet of described compressor 100 connects the refrigerant inlet of external oil eliminator 300, the refrigerant outlet of described oil eliminator connects the import of evaporative condenser 200, the outlet of described evaporative condenser 200 connects the import of reservoir 700, the outlet of described reservoir 700 connects the refrigerant inlet of low pressure recycle bucket 400, the refrigerant outlet of described low pressure recycle bucket 400 connects the refrigerant inlet of spiral evaporator 500, the refrigerant outlet of described spiral evaporator 500 is connected with the air inlet of low pressure recycle bucket 400, the gas outlet of described low pressure recycle bucket 400 is connected with the refrigerant inlet of compressor 100, refrigerant gas after compressor compresses enters into evaporative condenser condensation after external oil eliminator is separated, after condensation, cold-producing medium enters in reservoir 700, in described reservoir, cold-producing medium enters into low pressure recycle bucket 400 as required and flows into spiral evaporator 500 further and absorbs heat, cold-producing medium after heat absorption is got back in low pressure recycle bucket 400 through air inlet from spiral evaporator 500, and the refrigerator gas in low pressure recycle bucket 400 is entered in compressor 100 by gas outlet and forms next kind of refrigeration cycle.
Wherein, the effect of low pressure recycle bucket is after being cooled further by the air-breathing of compressor by the cold-producing medium sent here in reservoir, by the method for gravity supply, be fed in spiral evaporator and absorb heat, gas after heat absorption is got back to again the import of low pressure recycle bucket and is carried out further gas-liquid separation, gas after separation enters compressor again, ensures that compressor can not fall frost.Flooded screw mechanism ice maker group of the present invention cold-producing medium used is freon.Further, described low pressure recycle bucket setting position, higher than spiral evaporator setting position, makes the cold-producing medium in low pressure recycle bucket enter spiral evaporator under gravity through refrigerant outlet.Flooded screw mechanism ice maker group of the present invention changes the traditional feed liquid way of freon refrigeration system, gravity supply is adopted to substitute traditional expansion valve air feed refrigeration, thus solve traditional freon adopt expansion valve add distributor cause refrigerator pipes freeze distribute unbalanced problem, spiral evaporator of the present invention can be made to realize complete equipilibrium refrigeration, thus substantially increase freon ice making efficiency, and save electric energy.
Preferably, the difference in height of described low pressure recycle bucket and spiral evaporator is 1.2-2.0 rice.The efficient work of spiral evaporator can be guaranteed under this difference in height, make it have the highest heat exchanger effectiveness, also can guarantee refrigerant circulation backflow in time simultaneously, guarantee the work of compressor normal safe.
Particularly, described flooded screw mechanism ice maker group also comprises the machine oil storage tank 600 for storing machine oil, machine oil outlet on described external oil eliminator is connected with the import of machine oil storage tank, and the machine oil outlet of described machine oil storage tank 600 is connected with the engine oil inlet on compressor 100.Mixed oil and gas after compressor can be separated by external oil eliminator, and the machine oil after being separated is back in machine oil storage tank for compressor, isolated refrigerant gas then enters evaporative condenser and carries out condensation cooling, cold-producing medium after evaporative condenser enters in reservoir and stores, and can be passed at any time in low pressure recycle bucket and participate in kind of refrigeration cycle.
Certainly, flooded screw mechanism ice maker group of the present invention also comprises control system, described control system is PLC control system, the situation of its monitoring whole system is also according to the work of testing result automatic adjustment system, described control system can according to the work of ice making unit feedback adjustment compressor, such as described control system and low pressure recycle bucket, reservoir, the magnetic induction liquid level gauge arranged in the equipment such as machine oil storage tank, the connection such as magnetic inducted level switch and floating ball type switch, thus realize the real-time monitoring of system running state, and effectively can regulate system according to feedback data, guarantee that system is in safe and reliable state all the time.
The ice-making process of ice making unit of the present invention can be sketched and be: after ice making unit starting, cold-producing medium in reservoir enters into low pressure recycle bucket, and enter into spiral evaporator along pipeline under gravity and carry out heat exchange and become gaseous state, the cold-producing medium completing heat exchange turns back in low pressure recycle bucket, liquid cold-producing medium and the gaseous refrigerant on bucket top is now there is in low pressure recycle bucket, gaseous refrigerant enters into external oil eliminator after being drawn into and compressing in compressor, after the machine oil in gas is separated by external oil eliminator, is passed into cooling in evaporative condenser is condensed into liquid state, enter into reservoir subsequently to store and wait to enter next kind of refrigeration cycle, the isolated machine oil of external oil eliminator is back to machine oil storage tank, machine oil storage tank is connected with compressor at any time for compressor supplements machine oil.In kind of refrigeration cycle, do not need traditional pumping into by Action of Gravity Field because cold-producing medium enters into spiral evaporator from low pressure recycle bucket, therefore present invention saves energy consumption, make the evaporimeter in spiral evaporator be in " full saturated " state by Action of Gravity Field to the mode of spiral evaporator feed flow simultaneously, its high load capacity work can be made, thus there is high heat exchanger effectiveness, make the ice making efficiency of present system far away higher than traditional freon ice-making system.
Spiral evaporator of the present invention is compared to traditional fluorine horizontal-type evaporator or refrigeration piping accumbency mode, and it accelerates the evaporation rate of freon greatly, improves heat exchanger effectiveness, thus improves refrigeration efficiency, and energy consumption reduces.The feed liquid way of flooded screw mechanism ice maker group of the present invention in turn ensure that the requirement that freon is safe and reliable simultaneously.
In preferred embodiment, as shown in Figure 2, in flooded screw mechanism ice maker group of the present invention, spiral evaporator used comprises the input pipe 510 being provided with refrigerant inlet and the efferent duct 520 being provided with refrigerant outlet, spiral comb 530 has been arranged side by side between described input pipe and efferent duct, spiral comb two ends are connected with efferent duct with input pipe respectively, wherein, one is provided with for separating of the division board 540 of cold-producing medium and machine oil, the space up and down that described division board becomes to be connected along input pipe Diameter distribution thus by input pipe inside division in described input pipe.
Concrete, described input pipe be provided with return line 550 and be connected to compressor by return line, described return line is provided with jet pump, in described input pipe, the machine oil of deposition enters compressor by jet pump along return line.The described jet pump pressure energy of gases at high pressure is converted to speed that kinetic energy makes high pressure draught after nozzle reaches a very high value, region now around fluid is negative pressure state, and low-pressure fluid is introduced and will enter diffusing opening again after two fluids mixing, convert thereof into pressure energy and complete whole ejector action.Particularly, jet pump, by the transmitting power to compressor supply cold-producing medium, forms pneumatics, thus drives described input pipe inner engine oil to enter in jet pump in jet pump, and enters into compressor with make up compressor inner engine oil with the cold-producing medium of conveying.
Further, described division board is fixed with the connection at input pipe two ends respectively by its two ends, and described division board is horizontal positioned, forms the gap being used for upper and lower space and being communicated with between its dual-side with input pipe tube wall.
During ice making unit work of the present invention, along with cold-producing medium constantly enters spiral evaporator, the machine oil precipitated in spiral evaporator also gets more and more, under the iris action of division board, machine oil can flow to the bottom of input pipe along gap, division board both sides, therefore, in the input pipe of spiral evaporator, the machine oil proportion of division board bottom is more and more higher, under control system controls, machine oil under division board is drawn in return line 550 after starting by jet pump, machine oil is back in compressor along return line and participates in kind of refrigeration cycle, and spiral evaporator is owing to eliminating the drawback of machine oil sedimentation, it also ensure that ice machine group system of the present invention remains good refrigeration efficiency, overcome the drawback that traditional ice-making system needs constantly supplementary machine oil to cause system operation cost to increase simultaneously, substantially increase the reliability of system cloud gray model.
The invention provides a kind of flooded screw mechanism ice maker group, this ice making unit absorbs that ammonia refrigeration is energy-conservation, the feature of good refrigeration effect and freon safe ready, greatly improve the refrigerating efficiency using freon as refrigerant system, comprehensive energy efficiency ratio is obviously promoted, energy consumption significantly reduces, unit running security is high, makes flooded screw of the present invention mechanism ice maker group have the extremely strong market competitiveness in ice-making technology field.
Should be understood that, application of the present invention is not limited to above-mentioned citing, for those of ordinary skills, can be improved according to the above description or convert, and all these improve and convert the protection domain that all should belong to claims of the present invention.
Claims (8)
1. a flooded screw mechanism ice maker group, it is characterized in that, comprise compressor, evaporative condenser, external oil eliminator, low pressure recycle bucket, spiral evaporator and reservoir, the refrigerant outlet of described compressor connects the refrigerant inlet of external oil eliminator, the refrigerant outlet of described oil eliminator connects the import of evaporative condenser, the outlet of described evaporative condenser connects the import of reservoir, the outlet of described reservoir connects the refrigerant inlet of low pressure recycle bucket, the refrigerant outlet of described low pressure recycle bucket connects the refrigerant inlet of spiral evaporator, the refrigerant outlet of described spiral evaporator is connected with the air inlet of low pressure recycle bucket, the described gas outlet of low pressure recycle bucket is connected with the refrigerant inlet of compressor, refrigerant gas after compressor compresses enters into evaporative condenser condensation after external oil eliminator is separated, after condensation, cold-producing medium enters in reservoir, in described reservoir, cold-producing medium enters into low pressure recycle bucket as required and flows into spiral evaporator further and carries out heat exchange, complete the cold-producing medium after heat exchange gets back in low pressure recycle bucket through air inlet from spiral evaporator, and the refrigerator gas in low pressure recycle bucket is entered in compressor by gas outlet.
2. flooded screw mechanism ice maker group according to claim 1, is characterized in that, the cold-producing medium used in described flooded screw mechanism ice maker group is freon.
3. flooded screw mechanism ice maker group according to claim 2, it is characterized in that, described low pressure recycle bucket setting position, higher than spiral evaporator setting position, makes the cold-producing medium in low pressure recycle bucket enter spiral evaporator under gravity through refrigerant outlet.
4. flooded screw mechanism ice maker group according to claim 3, it is characterized in that, the difference in height of described low pressure recycle bucket and spiral evaporator is 1.2-2.0 rice.
5. flooded screw mechanism ice maker group according to claim 2, it is characterized in that, described flooded screw mechanism ice maker group also comprises the machine oil storage tank for storing machine oil, machine oil outlet on described external oil eliminator is connected with the import of machine oil storage tank, and the machine oil outlet of described machine oil storage tank is connected with the engine oil inlet on compressor.
6. flooded screw mechanism ice maker group according to claim 1, it is characterized in that, described spiral evaporator comprises the input pipe being provided with refrigerant inlet and the efferent duct being provided with refrigerant outlet, spiral comb has been arranged side by side between described input pipe and efferent duct, spiral comb two ends are connected with efferent duct with input pipe respectively, wherein, one is provided with for separating of the division board of cold-producing medium and machine oil, the space up and down that described division board becomes to be connected along input pipe Diameter distribution thus by input pipe inside division in described input pipe.
7. flooded screw mechanism ice maker group according to claim 6, it is characterized in that, described input pipe is provided with return line and is connected to compressor by return line, described return line is provided with jet pump, and in described input pipe, the machine oil of deposition enters compressor by jet pump along return line.
8. flooded screw mechanism ice maker group according to claim 7, it is characterized in that, described compressor is set to multiple stage, and the closed circuit of each compressor is in parallel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510743852.4A CN105444483B (en) | 2015-11-05 | 2015-11-05 | A kind of flooded screw mechanism ice maker group |
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| CN201510743852.4A CN105444483B (en) | 2015-11-05 | 2015-11-05 | A kind of flooded screw mechanism ice maker group |
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| CN105444483B CN105444483B (en) | 2018-01-23 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107339840A (en) * | 2017-08-18 | 2017-11-10 | 浙江冰欧新能源科技有限公司 | A kind of energy-saving mobile ice machine |
| CN107677001A (en) * | 2017-09-15 | 2018-02-09 | 北京市京科伦冷冻设备有限公司 | A kind of independent humidification-type fruits and vegetables ice temperature stereo garage carbon dioxide refrigerating system |
| CN108278802A (en) * | 2018-01-25 | 2018-07-13 | 山东宝成制冷设备有限公司 | A kind of gravity force liquid-supply ice machine |
| CN108534415A (en) * | 2018-01-25 | 2018-09-14 | 山东宝成制冷设备有限公司 | A kind of direct-cooling type ice machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108534415A (en) * | 2018-01-25 | 2018-09-14 | 山东宝成制冷设备有限公司 | A kind of direct-cooling type ice machine |
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| CN105444483B (en) | 2018-01-23 |
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