EP2196743A2 - Multi-energy and multi-source thermodynamic device with hot water tank - Google Patents

Abstract

The device has a mixed tank (1) comprising a sanitary hot water tank (2) equipped with a heat exchanger (8). An uncoupling tank (3) contains a coolant, and is connected to a heat pump (5) e.g. split heat pump, by a hydraulic circuit (18). The heat exchanger of the hot water tank and the uncoupling tank exchange heat with the condenser, in a heating mode, and with the evaporator, in a cooling mode, of the heat pump through a three-way control valve (29). Calorific energy storage blocks made of graphite/paraffin composite materials, are placed in the hot water tank.

Description

Field of the invention

The invention relates to heating and storage devices for domestic hot water and water or other heat transfer fluid for heating or cooling a building or swimming pool.

In particular, the device according to the invention comprises a thermodynamic device of the heat pump type, and a balloon for storing hot water, type domestic hot water on the one hand, and a heat transfer fluid, at a temperature generally lower than that of domestic hot water, intended in particular for the heating or cooling of buildings on the other hand.

State of the art

There are known thermodynamic devices for the combined heating of domestic hot water and a fluid for heating a building. These devices can also allow the cooling of the fluid in the case of a reversible thermodynamic device.

Balloons for storing hot water at different temperatures are also known. For example, the balloon described in the application FR 2,905,750 (JB Hurier ) comprises a first tank defined by a first wall and intended to contain water for sanitary purposes, and a second tank delimited by a second wall and intended to contain a heat-transfer fluid for heating purposes, such as water. This balloon is characterized in that the first tank is arranged at least partly inside the second tank so as to transfer heat from the sanitary water to the heat transfer fluid and thus heat the latter to wear it. at a second temperature, substantially less than or equal to the first temperature. This balloon does not allow the simultaneous storage of hot and cold water, in particular because the parts hot water / "warm" water (generally intended for space heating) are not thermally insulated any of the other, and that the storage of cold water would lead to a cooling of the hot water.

Other documents describe systems or devices for producing thermodynamic heat and storing liquids at different temperatures. Of these, the document US 4,350,200 relates to a solar energy collector. In one embodiment, the invention relates to a system operable with a solar collector, comprising a cold liquid reservoir in which the heat is stored at a relatively low temperature and a hot liquid reservoir in which the heat is stored at a high temperature, and a heat pump for transferring heat from the cold liquid reservoir to the hot liquid reservoir, and heat exchangers in each of the reservoirs. The document US 4,524,909 discloses an apparatus for producing domestic hot water and heating, which may comprise a heat pump and a boiler. The apparatus includes a storage tank for the heating water of the radiators and a hot water storage tank. The document DE 198 15 521 relates to a heat recovery system for heating buildings. Heating sources are solar panels or boilers. Storage is done through latent heat storage elements. The system described in this document does not include a heat pump. The document US 4,037,650 relates to a heat storage apparatus comprising two storage containers, each container containing a thermal storage medium, one of the media being able to be maintained at a temperature below a predetermined temperature and the second medium being able to be maintained at a temperature above a predefined temperature, a thermodynamic refrigeration system transfers the heat from the medium at low temperature to the medium at high temperature.

On the other hand, the demand WO 2006/101404 (KE Eriksen ) discloses a device comprising a water storage tank, a heat pump for transferring heat and / or cold to the water of the tank, the balloon comprising at least two separate tanks for the thermal storage of hot and / or cold water and / or ice, the tanks being thermally insulated from each other. The first tank exchanges heat with the heat pump through a first heat exchanger at a first temperature level, and the second tank exchanges heat with the heat pump through a second heat exchanger at a second level. temperature higher than the first temperature level. The disadvantage of this device is that it has limited domestic hot water production capacity, because domestic hot water is produced using the desuperheating of the compressor. In practice, this device can not produce water only when it produces hot or cold water for heating or cooling at the same time.

The document EP 0 240 441 It concerns a three-function heat pump system, namely the heating of a space, the cooling of a space and the heating of sanitary water. The heat pump is reversible, the system has two storage tanks of water or heat transfer liquid at two different temperatures, which allow the compressor to operate at the most favorable times, for example when electricity is provided at a reduced rate. The first balloon is of relatively large size, and intended for heating / cooling a space. The second balloon is smaller than the first and is intended for heating the sanitary water. If necessary, domestic hot water and / or heat transfer liquid can be taken in the respective balloons without mandatory immediate operation of the compressor. However, the heat pump described in the document EP 0 240 441 necessarily includes two condensers (in heating mode), one placed in the flask for heating / cooling a space, the second placed in the hot water tank; moreover a refrigerant coil is placed in the hot water tank, which is prohibited by the regulations in force in France and more generally in Europe.

The problem that the present invention proposes to solve is to provide a device, comprising a one-piece balloon provided with two tanks, and for heating water (such as domestic hot water) and, separately and independently, the heating or cooling water or another heat transfer fluid, for heating and cooling, and said balloon also allowing the simultaneous storage of hot water (such as domestic hot water) and a lukewarm heat transfer fluid or cold (such as water for space heating or cooling).

Object of the invention

1. (i) Une première partie desdites deux parties, qui est un premier ballon dit ballon d'eau chaude sanitaire, destiné à contenir de l'eau chaude à usage sanitaire à une température T1, doté d'un échangeur de chaleur relié à ladite pompe à chaleur par un circuit hydraulique, et pourvu en outre d'une résistance électrique chauffante apte à porter au moins temporairement l'eau stockée dans le ballon à une température supérieure à 70°C,
2. (ii) Une second partie desdites deux parties, qui est un second ballon, dit ballon de désaccouplage, destiné à contenir de l'eau ou un autre fluide caloporteur à une température T2 différente de T1 destiné au chauffage ou à la climatisation de locaux, et relié à ladite pompe à chaleur par un circuit hydraulique, et à au moins un dispositif de chauffage ou de refroidissement par un circuit hydraulique,

les deux parties dudit ballon étant isolées thermiquement et hydrauliquement l'une de l'autre,
ledit dispositif étant caractérisé en ce que l'échangeur du ballon d'eau chaude sanitaire et le ballon de désaccouplage peuvent échanger tous les deux de la chaleur avec le condenseur (en mode chauffage) ou l'évaporateur (en mode climatisation) de la pompe à chaleur, à travers une vanne trois voies.A first object of the invention is a combined device for producing water at at least two different temperatures T1 and T2, comprising a heat pump and a split balloon in two parts, said heat pump comprising a condenser and an evaporator, and said balloon comprising:

1. (i) A first part of said two parts, which is a first balloon called hot water cylinder, intended to contain hot water for sanitary use at a temperature T1, provided with a heat exchanger connected to said pump heat by a hydraulic circuit, and further provided with a heating electric resistance able to carry at least temporarily the water stored in the flask at a temperature above 70 ° C,
2. (ii) a second part of said two parts, which is a second balloon, said uncoupling balloon, intended to contain water or other heat transfer fluid at a temperature T2 different from T1 for heating or cooling premises, and connected to said heat pump by a hydraulic circuit, and to at least one heating or cooling device by a hydraulic circuit,

the two parts of said balloon being thermally and hydraulically isolated from each other,
said device being characterized in that the heat exchanger of the domestic hot water tank and the uncoupling tank can both exchange heat with the condenser (in heating mode) or the evaporator (in cooling mode) of the pump to heat, through a three-way valve.

Description of figures

• The figure 1 represents a block diagram of an embodiment of the device according to the invention and more particularly the balloon 1 and its connections with the associated components: heat pump 5, heating circuit and / or air conditioning 22,
• The figure 2 represents a block diagram of an embodiment of the device according to the invention and more particularly the balloon 1 and its connections with the associated components: heat pump 5, heating circuit and / or air conditioning 22, 36, solar panel thermal 9, boiler 12, swimming pool 14, additional air conditioning units 13.
• The figure 3 represents a block diagram of an embodiment of the device according to the invention in which energy storage blocks 43, 44 are placed in additional balloons 61, 62 respectively connected with the domestic hot water tank 2 and the uncoupling balloon 3.

List of marks used in the figures: 1 Mixed ball 2 Domestic hot water tank 3 Disconnecting ball 41,42,43,44 Energy storage bars 5 Heat pump 6 Resistance 7 Resistance of the domestic hot water tank 8 Heat exchanger of the heat pump with the domestic hot water tank 9 Solar thermal panel 10 Solar panel heat exchanger with domestic hot water tank 2 11 Solar panel heat exchanger with uncoupling balloon 3 12 Boiler 13 Air conditioning devices 14 Swimming pool 15 Swimming pool heat exchanger with uncoupling balloon 3. 16 Filtered 17 Outdoor probe 18 Hydraulic circuit between the heat pump 5 and the uncoupling drum 3 19, 20 Temperature control device, for zones with possibly different temperatures of a building (for example room thermostats) 21 Hydraulic circuit between the uncoupling tank 3 and the air conditioning units 13. 22, 36 Heating and / or air conditioning terminals connected to the uncoupling tank 3. 23,24,25,26. 27,28,35,51,52 Circulators (pumps) 29 Three-way valve on the hydraulic circuit of the heat pump outlet 5 30 Three-way valve on the hydraulic circuit between the uncoupling drum 3 and the pool 14 31 Three-way valve on the hydraulic circuit between the uncoupling drum and the heaters 22 (cooling floor heating) 32 Three-way valve on the hydraulic circuit between the solar panel and the domestic hot water tanks 2 and uncoupling 3 33, 38 Hydraulic circuit between the uncoupling tank 3 and the heating and / or air conditioning units 36, 22 34 Hydraulic circuit between the uncoupling drum 3 and the boiler 12 37 Hydraulic circuit between heat pump 5 and domestic hot water tank 2 61. 62 Extra balloons for storing heat energy 63 Hydraulic circuit between the domestic hot water tank 2 and the additional tank 61 64 Hydraulic circuit between the uncoupling drum 3 and the additional balloon 62 61.71 Resistance control boxes 6 and 7 Description of the invention 1. Definitions

• Dispositif thermodynamique : Ensemble comportant un compresseur et plusieurs échangeurs de chaleur dans lesquels circule un fluide de transfert spécifique appelé usuellement fluide frigorigène. Dans le cadre de la présente invention, le dispositif thermodynamique est une pompe à chaleur.
• Echangeur de chaleur : Dispositif destiné à transférer de la chaleur entre plusieurs circuits.
• Fluide caloporteur ou fluide de transfert : Fluide utilisé pour transférer de la chaleur. Les exemples classiques sont le fluide frigorigène, l'eau ou l'eau glycolée parfois appelé saumure.
• Panneau solaire thermique ou capteur solaire thermique : Dispositif qui recueille l'énergie thermique provenant du soleil et la transmet à un fluide caloporteur.
• Source : Milieu d'où une pompe à chaleur extrait la chaleur en mode chauffage.
• Pompe à chaleur monobloc : Pompe à chaleur composée d'une unité unique, comprenant le compresseur et les échangeurs de chaleur (condenseur et évaporateur), placée à l'extérieur ou à l'intérieur du bâtiment.
• Pompe à chaleur « split » : Pompe à chaleur composée de deux unités séparées, l'une placée à l'extérieur du bâtiment et comprenant le compresseur et un premier échangeur de chaleur (évaporateur en mode chauffage) et l'autre placée à l'intérieur du bâtiment et comprenant un second échangeur de chaleur (condenseur en mode chauffage), les deux unités étant reliées par deux conduites dans lesquelles est transporté un fluide caloporteur.
• Pompe à chaleur basse température : Pompe à chaleur destinée à alimenter des appareils de chauffage fonctionnant à basse température, typiquement 27 à 45°C, et de préférence 27 à 35°C, tels qu'un plancher chauffant, des ventiloconvecteurs, des radiateurs basse température, i.e. des radiateurs permettant d'obtenir une température de confort en hiver avec une eau de chauffage de l'ordre de 45°C.
• Pompe à chaleur haute température : Pompe à chaleur destinée à alimenter des appareils de chauffage fonctionnant à haute température, typiquement 50 à 65°C, tels que des radiateurs.

In this document, we mean:

• Thermodynamic device: An assembly comprising a compressor and a plurality of heat exchangers in which circulates a specific transfer fluid usually called a refrigerant. In the context of the present invention, the thermodynamic device is a heat pump.
• Heat exchanger: Device intended to transfer heat between several circuits.
• Heat transfer fluid or transfer fluid: Fluid used to transfer heat. Typical examples are refrigerant, water or brine sometimes called brine.
• Thermal solar panel or solar thermal collector: Device that collects heat energy from the sun and transmits it to a heat transfer fluid.
• Source: Environment where a heat pump extracts heat in heating mode.
• Monobloc heat pump: A heat pump consisting of a single unit, including the compressor and the heat exchangers (condenser and evaporator), placed outside or inside the building.
• Split heat pump: A heat pump consisting of two separate units, one located outside the building and including the compressor and a first heat exchanger (evaporator heating mode) and the other placed inside the building and comprising a second heat exchanger (condenser heating mode), the two units being connected by two pipes in which is transported a heat transfer fluid .
• Low temperature heat pump: A heat pump intended to supply heating appliances operating at low temperature, typically 27 to 45 ° C, and preferably 27 to 35 ° C, such as underfloor heating, fan convectors, low radiators temperature, ie radiators to obtain a comfort temperature in winter with a heating water of the order of 45 ° C.
• High temperature heat pump: A heat pump intended to supply heating appliances operating at high temperature, typically 50 to 65 ° C, such as radiators.

2. Detailed description of the invention

As mentioned above, the problem that the present invention proposes to solve is to provide a device, comprising a one-piece balloon provided with two tanks, and allowing the heating of water (such as domestic hot water) and, separately and independently, the heating or cooling of water or other coolant, for heating and cooling, and said balloon also allowing simultaneous storage of hot water (such as domestic hot water) and a lukewarm or cold heat transfer liquid (such as water for space heating or cooling), with a smaller footprint compared to that of existing devices in the state of the art.

According to the invention, the problem is solved by a combined device for producing water at two different temperatures T1 and T2, comprising a heat pump 5 and a balloon 1 divided into two parts 2, 3, in which the two parts 2 , 3 said balloon 1 form, for part 2 a hot water tank, and for part 3 a balloon called "disconnection balloon". The two parts 2, 3 of the balloon 1 are thermally and hydraulically isolated from each other. In the remainder of the text, reference is generally made to part 2 of the balloon 1 using the expression "domestic hot water cylinder 2", and to part 3 of the balloon 1 using the expression "uncoupling balloon 3". ".

The domestic hot water tank 2 contains a heat exchanger 8. The heat exchanger 8 of the domestic hot water tank 2 and the uncoupling tank 3 can both exchange heat with the condenser (in heating mode ) or the evaporator (in cooling mode) of the heat pump 5, through a three-way valve 29.

Such a device is shown schematically on the figure 1 . It comprises a so-called mixed balloon 1 allowing the simultaneous management of water at a temperature T1 and a coolant such as water at a temperature T2 different from T1, the water and the heat transfer fluid being respectively brought to the temperatures T1 and T2 by a heat pump 5. The mixed balloon of the present invention allows the heating and / or cooling of the heat transfer fluid of a hydraulic heating / air conditioning circuit and the heating of domestic hot water.

1. (i) Un premier ballon dit ballon d'eau chaude sanitaire 2, préférentiellement en acier inoxydable ou en acier émaillé ou thermolaqué, ou en acier revêtu d'une peinture époxy, doté d'un échangeur de chaleur 8 relié à la pompe à chaleur 5 par un circuit hydraulique 37, et pourvu en outre d'une résistance électrique chauffante 7, qui fonctionne de manière intermittente pour porter l'eau stockée dans le ballon 2 à une température supérieure à 70°C afin de détruire les micro-organismes du genre Legionella, et notamment de type Legionella pneumophilia,
2. (ii) Un second ballon dit ballon de désaccouplage 3, préférentiellement en acier, destiné à contenir un fluide caloporteur chaud ou froid destiné au chauffage ou à la climatisation de bâtiments, et relié à la pompe à chaleur 5 par un circuit hydraulique 18.

The balloon of the present invention is split into two parts:

1. (i) A first balloon called sanitary hot water cylinder 2, preferably made of stainless steel or enamelled or powder coated steel, or steel coated with an epoxy paint, equipped with a heat exchanger 8 connected to the heat pump 5 by a hydraulic circuit 37, and further provided with an electric heating resistor 7, which operates intermittently to bring the water stored in the tank 2 to a temperature above 70 ° C to destroy the microorganisms of the genus Legionella , and in particular of the Legionella pneumophilia type,
2. (ii) A second balloon said uncoupling balloon 3, preferably steel, intended to contain a hot or cold heat transfer fluid for heating or cooling buildings, and connected to the heat pump 5 by a hydraulic circuit 18.

For use in air conditioning, the water or other cold heat transfer fluid has, according to the intended use, a temperature T2 of between about 6 ° C and 12 ° C for direct use in air conditioning, and between about 15 and 18 ° C for use in a heated floor operating in cooling mode.

For use in heating mode, the coolant of the uncoupling tank 3 has, according to the intended use, a temperature T2 of between 27 and 45 ° C, preferably 35 ° C for use in underfloor heating or with ventiloconvectors or low temperature radiators, and a T2 temperature between 45 ° C and 65 ° C for use with conventional radiators. Most often and preferably, T2 is less than T1.

The domestic hot water tank 2 and the uncoupling tank 3 are further thermally insulated from each other. This thermal insulation allows the simultaneous storage of domestic hot water at a temperature T1 between 50 ° C and 70 ° C in the tank 2 and a cold heat transfer fluid at a temperature T2 between 6 ° C and 18 ° C intended the air conditioning in the uncoupling tank 3 without heat exchange between the domestic hot water tank 2 and the uncoupling tank 3.

In addition, the domestic hot water tank 2 and the uncoupling tank 3 are not in hydraulic contact with each other, one being intended to contain water for domestic use, and the other a heat transfer fluid which may be water, but also brine, or other antifreeze heat transfer fluid for example, and intended in particular for heating and / or cooling buildings.

In domestic hot water tank 2, domestic hot water is stored. A heat exchanger 8, for example a coil, connected to the heat pump 5 by a hydraulic circuit 37 and placed in the domestic hot water tank 2, allows heat exchange with the heat pump 5 in order to heat the heat. sanitary hot water, by circulation of a coolant which takes heat from the condenser (not shown) of the heat pump.

The uncoupling tank 3 is connected to the heat pump 5 by a hydraulic circuit 18 in which circulates a coolant. The uncoupling tank 3 is furthermore connected to the heating and / or air conditioning devices 13, 22, 36 by hydraulic circuits 21, 33, 38, in which the coolant circulates as well.

In the uncoupling tank 3, the coolant, such as water or brine, can be stored. In particular, the uncoupling tank 3 acts as a buffer to prevent short cycles of the compressor of the heat pump. This type of balloon, or bottle, is commonly used in hydraulic heating / cooling circuits in cases where the volume of liquid in the circuits is low. The uncoupling drum 3 also has the function of mixing the heat transfer fluid of the hydraulic circuits 21, 33, 38 of the heating / cooling apparatus of the buildings 22, 36, 13 with the heat transfer fluid heated or cooled by the heat pump 5.

The heat pump 5 of the device according to the invention can be of any known type for heating and / or cooling buildings with a heat transfer liquid. It may be for example a monobloc or split heat pump, air / water or geothermal / water.

In the case where the heat pump is of the air / water type, the heat sources may be outside air and / or extract air from ventilation and / or a mixture of outside air and extract air from ventilation. .

The geothermal / water type heat pumps may be ground / water type heat pumps, ie heat pumps using as a source or sensor a loop of refrigerant passing into the external ground. The geothermal / water type heat pumps can also be of the brine / water type, that is to say heat pumps using as a source or sensor a brine loop passing into the external ground. Finally, the geothermal / water type heat pumps can also be water / water type, that is to say heat pumps using as source or sensor an "open" loop on the water of a water table or a river.

In one embodiment, the heat pump 5 of the device according to the invention is a low-temperature heat pump, and at least one of the associated heating / air-conditioning units 22, 36 is a floor heating, possibly refreshing, or a fan-coil , or low temperature radiator. In this embodiment, the low-temperature heat pump 5 heats the heat transfer fluid of the uncoupling tank 3 at a temperature T2 advantageously between 27 ° C and 45 ° C, preferably 35 ° C.

In another embodiment, the heat pump 5 of the device according to the invention is a high temperature heat pump and the associated heating / air-conditioning units 22, 36 are radiators or convectors. In this embodiment, the high temperature heat pump heats the heat transfer fluid of the uncoupling tank 3 at a temperature T2 advantageously between 50 ° C and 65 ° C.

In yet another embodiment, the device according to the invention is provided with at least two heating / air conditioning units 22, 36 placed in two different zones of a building, and operating with possibly different heat transfer fluid temperatures. . The temperature of each zone is regulated by the temperature control devices 19, 20. These devices control the actuation of the circulators (or pumps) 25, 26.

In addition, in the device according to the invention, the heat energy required for heating the domestic hot water is supplied by the condenser (not shown in the drawings) of the heat pump 5. This makes it possible to have a high heat output for heating domestic hot water, unlike some devices of the state of the art. The heating of the domestic hot water is achieved by heat exchange with heat transfer liquid through the heat exchanger 8, and not by heat exchange with refrigerant as in other devices of the state of the technical. Indeed, the regulations in force in Europe prohibit the use of a heat exchanger containing refrigerant in the water balloons intended for domestic or sanitary use.

On the other hand, the mixed balloon 1 makes it possible to simultaneously store water and heat transfer fluid at two different temperatures T1 and T2, respectively. This is made possible by thermal insulation between the domestic hot water tank 2 and the uncoupling tank 3, obtained for example by placing between the two flasks a sufficient quantity of an effective thermal insulator such as polyurethane foam, glass wool, rock wool, expanded polystyrene. An environmentally friendly or natural non-polluting insulator, such as sheep's wool or hemp wool may advantageously be used.

An electrical resistor 6 can be placed on the coolant circuit, either in the heat pump 5, as shown in FIG. figure 1 , either in the uncoupling drum 3, as shown in FIG. figure 3 at another point in the hydraulic circuit, as shown on the figure 2 . This is a booster resistance to overcome the lack of power of the heat pump 5, for example in the case of an air / water heat pump when the outside temperature is very low.

A three-way valve 29 placed in the heat transfer fluid circuit at the outlet of the heat pump 5 makes it possible to send said coolant either to the heat exchanger 8 of the domestic hot water tank 2 or to the uncoupling tank 3 as required.

In a particular embodiment, the heat pump 5 is a reversible heat pump, capable, as needed, of heating or cooling a heat transfer fluid such as water, thanks to an inversion of its thermodynamic cycle ( the condenser becomes the evaporator and vice versa). When needs of air conditioning exist, the heat pump cools the heat transfer fluid of the uncoupling tank 3. When domestic hot water requirements appear, a control module reverses the operation of the heat pump 5, which then heats the coolant, which is sent in the exchanger 8 of the domestic hot water tank 2, thanks to the three-way valve 29.

In a particular embodiment, the device according to the invention further comprises a solar thermal panel 9. A heat exchanger 10, for example a coil, connected to the solar thermal panel 9 by a hydraulic circuit, and placed in the balloon domestic hot water 2, to heat the water of the domestic hot water tank 2. Another heat exchanger 11 connected to the solar thermal panel by a hydraulic circuit and placed in the uncoupling tank 3 allows to heat the water of uncoupling balloon 3.

A three-way valve 32 placed in the heat transfer fluid circuit of the solar thermal panel 9 makes it possible to send the coolant either to the heat exchanger 10 of the domestic hot water tank 2 or to the heat exchanger 11 of the balloon uncoupling 3 as required.

In yet another particular embodiment, a boiler 12 is used as an additional means of heating the water of the uncoupling tank 3. The boiler 12 can be a wood boiler, gas, fuel oil, electric resistances, or a chimney equipped with a system for extracting hot air. The boiler 12 may be of interest when the power of the heat pump is limited, for example in the case of an air / water heat pump when the outside temperatures are very low.

In another particular embodiment, the uncoupling flask 3 further comprises a heat exchanger 15 for heating or cooling the water of a swimming pool 14. This embodiment also makes it possible to dispose of any overproduction of water. hot by the solar thermal panel 9, heating a pool 14 acting in this case as a heat sink of almost infinite capacity. The use of the solar thermal panel for the heating of the water of a swimming pool also allows to have a free and renewable thermal energy.

In addition, the device according to the invention is provided with a housing or electronic control module (not shown). This housing makes it possible to control the various components of the device such as the three-way valves 29, 30, 31, 32, the starting or stopping of the compressor (not shown) of the heat pump 5 as a function of the heating requirements of domestic hot water and / or heating and cooling of the heat transfer fluid contained in the uncoupling tank 3. The control box is programmed to take into account in particular, but without limitation, the outside temperature measured by the external sensor 17 and the water law of the heat pump 5. The term "water law" means a control function which makes it possible to control the temperature of the heating water as a function of the outside temperature.

In another particular embodiment, the device according to the invention further comprises storage blocks of the heat energy 41, 42, 43, 44. These energy storage blocks may consist for example of composite materials. graphite / paraffin, or comprise such composite materials; these composite materials are part of the state of the art. In this case, it is a storage mainly by latent heat.

The heat energy storage blocks 41, 42, 43, 44 may be placed in the domestic hot water tank 2 and / or in the uncoupling tank 3 and / or in one or more containers located outside. at least one of these balls 2, 3 and can be used to store heat, for example during overproduction, or when the user benefits from a lower rate at certain times ("off-peak hours") for electricity, and then return this heat for heating the domestic hot water of the tank 2 and / or the heating or cooling of the heat transfer fluid of the uncoupling tank 3.

In a particular embodiment, the storage blocks of the heat energy 43, 44 are placed in additional balloons 61, 62, as represented by FIG. figure 3 . The additional balloons 61, 62 are respectively connected to the domestic hot water tank 2 and to the uncoupling tank 3 by means of hydraulic circuits 63, 64. During overproduction, or in "off-peak" periods, the heat is stored in blocks 43 and / or 44 to be used thereafter as needed. In certain particular embodiments, the device according to the invention comprises a single additional tank 61 connected to the domestic hot water tank 2 or a single additional tank 62 connected to the uncoupling tank 3.

3. Advantages of the invention

A first advantage of the device according to the invention is its simplicity: in heating mode it has only one condenser.

Another advantage of the device according to the invention compared to those of the state of the art is that it has both a high hot water production capacity, and great flexibility of operation.

Indeed, in the device according to the invention, the heat energy required for heating the domestic hot water is provided by the condenser (not shown) of the heat pump 5. This allows to have a high heat output. On the other hand, the mixed balloon 1, consisting of two parts 2, 3 thermally insulated from each other, can simultaneously store water and heat transfer fluid at two different temperatures.

The device according to the invention thus has a great flexibility of operation. Indeed, the device according to the invention can, simultaneously, use the domestic hot water of the balloon 2 according to the needs of users, and heat or cool a space of a building using the coolant contained in the uncoupling balloon 3. At the same time, the heat pump 5 is used either to heat the domestic hot water, or to heat or cool the heat transfer fluid of the uncoupling tank 3.

Thus, the device according to the invention can be provided with a regulation system which enables it to supply or store water at a temperature T1 of between 50 ° C. and 70 ° C., and water at a temperature T2 which can be selected by the user according to his needs from any one of the following three ranges: T2 = 6 ° C to 18 ° C, T2 = 27 ° C to 45 ° C, preferably 27 ° C to 35 ° C, T2 = 50 ° C to 65 ° C.

The device according to the invention can be installed for example in replacement of a gas or oil boiler with storage tank of domestic hot water, which allows the realization of energy savings, this without substantially increasing the total internal space used by the heating and hot water system.

The mixed balloon 1 used in the device according to the invention can easily, with some adjustments that do not depart from the scope of the present invention, be connected to a conventional heat pump, such as a monobloc pump air / water or air / air, or a split heat pump with a hydraulic module connected to the unit interior. Therefore, the device according to the invention can be obtained by replacing the existing domestic hot water production device (and in particular an electric cumulus) of a housing also equipped with a heat pump, by the mixed balloon. 1 of the device according to the invention, also allowing a substantial saving of energy.

Claims (15)

Combined device for producing water at at least two different temperatures T1 and T2, comprising a heat pump (5) and a balloon (1) divided into two parts, said heat pump comprising a condenser and an evaporator, and said balloon comprising: (i) A first balloon called domestic hot water tank (2), intended to contain hot water for sanitary use at a temperature T1, provided with a heat exchanger (8) connected to said heat pump ( 5) by a hydraulic circuit (37), and further provided with an electric heating resistor (7) adapted to at least temporarily carry water stored in the flask (2) at a temperature above 70 ° C, (ii) a second balloon, said uncoupling balloon (3), intended to contain water or another heat transfer fluid at a temperature T2 different from T1 for heating or cooling premises, and connected to said pump heat (5) by a hydraulic circuit (18), and at least one heating or cooling device (13, 22, 36) by a hydraulic circuit (33, 38), the two balls (2, 3) being thermally and hydraulically insulated from one another,
said device being characterized in that the exchanger (8) of the hot water tank (2) and the uncoupling tank (3) can both exchange heat with the condenser (in heating mode) or evaporator (in cooling mode) of the heat pump (5), through a three-way valve (29). Device according to claim 1 characterized in that it further comprises a solar thermal collector (9) connected to a heat exchanger (10) placed in the domestic hot water tank (2), and to a heat exchanger ( 11) placed in the uncoupling drum (3). Device according to claim 1 or 2 characterized in that it further comprises a boiler (12) connected to the uncoupling tank (3) by a hydraulic circuit (34). Device according to any one of claims 1 to 3 characterized in that it further comprises a heat exchanger (15) placed in the uncoupling tank (3), said heat exchanger (15) being intended for heating or cooling the water of a swimming pool (14) Device according to any one of claims 1 to 4, characterized in that it furthermore comprises an electrical resistance (6) placed in the heat pump (5), or on the hydraulic circuit (18) or in the uncoupling tank (3). Device according to any one of claims 1 to 5 characterized in that it further comprises storage blocks of the heat energy (41, 42, 43, 44) placed in the hot water tank (2) , and / or in the uncoupling drum (3) and / or outside at least one of said balls (2, 3). Device according to claim 6, characterized in that said heat energy storage blocks (41, 42, 43, 44) comprise graphite / paraffin composite materials. Device according to Claim 6 or 7, characterized in that the said storage blocks (43, 44) are placed in additional flasks (61, 62), which are respectively connected to the domestic hot water tank (2) and to the flask. uncoupling circuit (3) by means of hydraulic circuits (63, 64). Device according to any one of claims 1 to 8, characterized in that the heat pump (5) is a monobloc or split-type heat pump. Device according to any one of claims 1 to 9, characterized in that the heat pump (5) is an air / water type heat pump using as source external air and / or extract air ventilation. Device according to any one of claims 1 to 9, characterized in that the heat pump (5) is a geothermal / water type heat pump using as a source a refrigerant loop, or a brine loop, or an open loop on the water of a water table or river. Device according to one of Claims 1 to 11, characterized in that : the heat pump (5) is a low temperature heat pump, at least one of the associated heating / air-conditioning units (22, 36) is selected from the group consisting of: a floor heating / cooling, a fan-coil, a low-temperature radiator, the temperature T2 is advantageously between 27 ° C. and 45 ° C., preferably 35 ° C. Device according to one of Claims 1 to 11, characterized in that : the heat pump (5) is a high temperature heat pump, the associated heating / cooling apparatus (22, 36) are radiators or convectors, the temperature T2 is advantageously between 50 ° C. and 65 ° C. Device according to any one of claims 1 to 13, characterized in that it has a control system enabling it to supply or store water at a temperature T1 of between 50 ° C and 70 ° C, and water at a temperature T2 that can be selected by the user according to his needs from any one of the following three ranges: T2 = 6 ° C to 18 ° C, T2 = 27 ° C to 45 ° C, T2 = 50 ° C to 65 ° C. Device according to any one of claims 1 to 14, characterized in that the first balloon (2) is made of stainless steel or enamelled or powder coated steel or steel coated with an epoxy paint, and that the second balloon ( 3) is made of steel.

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