WO2019179274A1 - Full-efficiency air source heat pump system - Google Patents

Abstract

A full-efficiency air source heat pump system, comprising an air source heat pump unit (I), an indoor gas-water heat exchange unit (II) connected to an air outlet of a heat pump indoor machine (3) of the air source heat pump unit (I), and an outdoor gas-liquid heat exchange unit (IV) connected to an air outlet of a heat pump outdoor machine (4) of the air source heat pump unit (I); an output end of the indoor gas-water heat exchange unit (II) is connected to a basic application unit (III), and an output end of the outdoor gas-liquid heat exchange unit (IV) is connected to a waste energy application unit (V).

Description

Full-efficiency air source heat pump system

Solemnly declare:

This application claims the priority of the following utility model patents:

The application date is March 17, 2018, the application number is 201820366430.9, and the Chinese utility model patent named "Full-effect air source heat pump system".

Technical field

The present application relates to the field of air source heat pump central air conditioning technology, and in particular relates to a full-efficiency air source heat pump system, which integrates various functions such as cooling, heating, hot water production and energy storage.

Background technique

Air can be used as a clean and environmentally friendly low-level heat source. It has inexhaustible, inexhaustible, everywhere, and can be obtained without compensation. The air source heat pump unit can be used in many areas such as winter heating and summer cooling in the home, enterprises and institutions. application. However, the prior art air source heat pump units still have the following problems to be solved:

1. Existing air source heat pump (floor heating) unit system due to design, process and other reasons, the system is defrosting in winter (air source heat pump winter defrosting is cooling state), especially in winter low temperature and high humidity "rain and snow fog" days, During the defrosting process, the system is converted from a heating state to a cooling state. The floor heating system currently used has only one liquid (refrigerant R410a)-liquid (cooling agent, such as water) heat exchange system, and there is no other defrosting channel. When the system is defrost, the circulating hot water in the circulating water turns into circulating cold water, which greatly reduces the heating effect of the air source heat pump floor heating unit, affects the heating comfort and increases the energy consumption (ie, reduces the heating energy efficiency ratio); The integrated unit must not be powered off during the winter operation, otherwise the system will be easily frozen and the equipment will be scrapped.

The existing air source heat pump (floor heating) unit solves the defects of the unit winter defrosting system, increases the emergency measures, and improves the design for the host defrosting problem. Usually, the system is installed with electric auxiliary heat device or buffer tank to solve the problem. However, from the practical application, even if an electric auxiliary heat device and a small volume buffer water tank are installed, the heating effect in the winter "rain, snow and fog" is still not ideal, and the energy consumption is too large; in the continuous low temperature and high humidity "rain and snow fog" "The effect of weather heating is particularly obvious; in order to prevent freezing, the overall unit is to change the circulating water to circulating antifreeze, but the winter system is more troublesome to supplement the antifreeze, which brings great inconvenience to the user.

2. The existing air source heat pump (floor heating and cooling) unit is used in the constant temperature capillary cold radiant cooling in summer. Because of the design of only one liquid (refrigerant R410a)-liquid (coolant, such as water) heat exchange system, it cannot To achieve high temperature refrigeration advocated by the industry, the system control "dew point" problem can not be solved well, and the "dew point" control during cooling operation cannot be performed; the system is applied to the cold radiation enclosure (such as wall and roof) when applied to capillary cold radiation. Surface condensation, resulting in the existing air source heat pump floor heating (cooling and heating) unit is difficult to apply to advanced thermostatic capillary "no indoor unit" cold radiation refrigeration system.

3, the existing air-cooled (ie natural circulation) air source heat pump system, in the summer when cooling, the outdoor host due to heat exchange convection generated waste heat is not used, but most of the direct discharge into the atmosphere; both cause a certain heat source The waste has raised the ambient temperature of the surrounding atmosphere.

4. The existing air-cooled (ie natural circulation) air source heat pump system does not utilize the waste cold generated by the heat exchange convection in the outdoor unit during heating in the winter, but most of it is directly discharged into the atmosphere; The waste of a certain cold source reduces the ambient temperature of the surrounding atmosphere.

5. The existing air-cooled air source heat pump system has no design and configuration of hot (cold) recovery devices due to design, process, etc. When the heat pump main unit is working, sometimes due to poor ventilation around the main unit, large-area host centralized installation or outdoor atmosphere When the wind is 0-2, it will cause overheating in the surrounding area of the mainframe in winter, and it will be too cold in winter, which will directly or indirectly affect the working efficiency of the unit. Sometimes, even if the surrounding environment of the mainframe is too cold or overheated, the scope of the super-operating condition of the mainframe will crash.

Summary of the invention

In view of this, the technical problem to be solved by the present application is to provide a full-efficiency air source heat pump system that is energy-saving and comfortable, energy-saving and consumption-reducing, environmentally-friendly, and practical.

In order to solve the above technical problem, the technical solution of the present application is: a full-efficiency air source heat pump system including an air source heat pump unit, the air source heat pump unit including a heat pump connected through a refrigerant pipe The indoor unit and the heat pump outdoor unit; the full-efficiency air source heat pump system further includes:

An indoor gas-water heat exchange unit, wherein the indoor gas-water heat exchange unit is connected to an air outlet of the heat pump indoor unit, and an output end of the indoor gas-water heat exchange unit is used for connecting a basic application unit;

The outdoor gas-liquid heat exchange unit is connected to an air outlet of the heat pump outdoor unit, and an output end of the outdoor gas-liquid heat exchange unit is used for connecting the waste energy application unit.

The following are a number of further improvements to the full-efficiency air source heat pump system of this application:

Wherein, the indoor gas water heat exchange unit comprises:

a gas-water heat exchanger comprising a casing and a gas-water heat exchange assembly disposed in the inner cavity of the casing, the casing having a casing air inlet and a casing air outlet, the casing The air inlet is connected to an air outlet of the heat pump indoor unit, and the gas-water heat exchange assembly has a water inlet and a water outlet, the water inlet is connected with an inlet pipe, and the water outlet is connected with an outlet pipe, and the outlet pipe or a circulation pump is arranged on the inlet pipe;

The gas-water heat exchange controller is provided with a temperature and humidity detecting module, and the circulating pump is electrically connected to the gas-water heat exchange controller.

Wherein, the gas-water heat exchange assembly comprises an internally-threaded copper tube aluminum wing coating heat exchange assembly.

The air outlet of the casing is connected to the air inlet of the indoor unit of the heat pump through a circulation air passage.

The air source heat pump unit further includes a heat pump controller and an inner tube temperature sensor disposed in the heat pump indoor unit, wherein the inner tube temperature sensor, the heat pump indoor unit, and the heat pump outdoor unit respectively The heat pump controller is electrically connected.

The water inlet pipe and the water outlet pipe are connected to the basic application unit, and the basic application unit includes a water heating and heating unit, a water cooling and cooling unit, and a domestic hot water unit arranged in parallel.

Wherein, the outdoor gas-liquid heat exchange unit comprises:

a gas-liquid heat exchanger comprising a casing and a gas-liquid heat exchange assembly disposed in the inner cavity of the casing, the casing having a casing air inlet, the casing air inlet and the The air outlet of the heat pump outdoor unit is connected, the gas-liquid heat exchange assembly has a liquid inlet and a liquid outlet, the liquid inlet is connected to the liquid inlet, the liquid outlet is connected to the liquid outlet, and the liquid is discharged. a circulation pump is arranged on the tube or the inlet pipe;

A gas-liquid heat exchange controller, the circulation pump being electrically connected to the gas-liquid heat exchange controller.

Wherein, the gas-liquid heat exchange assembly comprises an internally threaded copper tube aluminum wing coating heat exchange assembly.

Wherein, the gas-liquid heat exchanger is assembled separately from the heat pump outdoor unit.

Wherein the inlet pipe and the outlet pipe are connected to a waste energy application unit, the waste energy application unit comprises a waste heat application unit and/or a waste cold application unit; the waste heat application unit comprises a domestic hot water unit, waste heat a drying unit and a ground source heat storage unit; the waste cooling application unit includes an auxiliary refrigeration and freezing unit and a ground source cold storage unit.

After adopting the above technical solutions, the beneficial effects of the present application are as follows:

The full-efficiency air source heat pump system of the present application comprises an air source heat pump unit, an indoor gas water heat exchange unit connected to the heat pump indoor unit air outlet of the air source heat pump unit, and a heat pump outdoor unit air outlet connected to the air source heat pump unit. The outdoor gas-liquid heat exchange unit, the output end of the indoor gas-water heat exchange unit is connected to the basic application unit, the output end of the outdoor gas-liquid heat exchange unit is connected to the waste energy application unit; and the outdoor gas-liquid heat exchange unit is capable of the air source heat pump host The waste cold waste heat generated is recycled to improve the energy efficiency ratio of the unit, which not only saves energy, reduces consumption, reduces environmental protection, is practical and efficient, but also avoids the main energy efficiency attenuation or crash of the host environment due to overcooling or overheating, and ensures efficient operation of the unit. Stable and reliable.

Since the indoor air-to-water heat exchange unit is connected to the air outlet of the heat pump indoor unit, the air source heat pump unit operates in the summer cooling condition to realize the primary heat exchange between the refrigerant and the air, and the air after the heat exchange enters the gas-water heat exchange by the heat pump indoor unit. The inner cavity of the casing exchanges heat with the water in the gas-water heat exchange assembly, and the water after the secondary heat exchange is used for indoor cold radiation cooling; meanwhile, the temperature and humidity detecting module detects the indoor temperature and humidity index, one of which is an indicator When the set value is reached, the gas-water heat exchange controller controls the circulating pump to stop running, thereby avoiding the condensation on the surface of the cold radiation enclosure due to excessive humidity or low temperature, and effectively solving the “dew point” during cooling operation. Control, to achieve the "high temperature refrigeration" goal advocated in the industry, energy saving and comfortable.

Since the heat pump indoor unit is provided with an internal tube temperature sensor, when the winter heating and heating needs to be defrosted, the internal tube temperature sensor detects the heat pump indoor unit heat exchange tube temperature, and when the tube temperature does not reach the temperature requirement, the heat pump indoor unit does not work ( That is, no air is emitted. Although the air source heat pump unit is in a cooling state during defrosting, since the heat pump indoor unit does not exchange heat with the gas water heat exchanger, the heating effect of the floor heating circulating water path is not affected by the host defrosting. It completely solves the problem that the circulating water in the heating system is continuously cooled by the frequent frosting of the system in winter.

In summary, the full-efficiency air source heat pump system of the present application effectively solves the problem of "condensation" in summer and the frequent "defrosting" affecting heating in winter; the waste cold waste heat generated by the air source heat pump main unit can be recycled and energy-saving Efficient, reducing emissions and environmental protection, avoiding the host's energy efficiency attenuation or crash due to over-cooling or overheating of the host environment, the unit operation is efficient, stable and reliable, and achieves a multi-purpose machine.

DRAWINGS

1 is a schematic structural view of a full-efficiency air source heat pump system according to an embodiment of the present application;

2 is a flow chart of application of a full-efficiency air source heat pump system according to an embodiment of the present application;

Among them: I-air source heat pump unit; II- indoor gas water heat exchange unit; III-basic application unit; IV-outdoor gas-liquid heat exchange unit; V-waste energy application unit; 1- gas-water heat exchanger; Gas-water heat exchange component; 3-heat pump indoor unit; 4-heat pump outdoor unit; 5-- refrigerant line; 61-inlet pipe; 62-outlet pipe; 7-filter; 8-pressure gauge; 9-temperature gauge; - circulation pump; 11 - plumbing heating unit; 111 - floor heating pipe; 12 - water cooling unit; 121 - capillary network; 13 - domestic hot water unit; 131 - domestic hot water tank; 132 - water tank heat exchange tube; Auxiliary heat device; 14-circulation air passage; 15-air filter device; 16-soft connection; 17-heat pump controller; 18-gas water heat exchange controller; 19-gas-liquid heat exchange controller; 20-gas-liquid exchange Heater; 21-gas-liquid heat exchange component; 22-air filter device; 23-inlet pipe; 24-drain pipe; 25-circulation pump; 26-auxiliary refrigeration unit; 27-waste heat drying unit; Ground source energy storage unit.

In Fig. 1, solid arrows indicate air flow directions, and broken arrows indicate water (liquid) flow directions.

detailed description

The present application is further described in detail below with reference to the accompanying drawings and embodiments.

As shown in FIG. 1 and FIG. 2, the full-efficiency air source heat pump system of the present application includes an air source heat pump unit I, an indoor gas water heat exchange unit II, and an outdoor gas liquid heat exchange unit IV. The air source heat pump unit 1 includes a heat pump controller 17 and a heat pump indoor unit 3 and a heat pump outdoor unit 4 connected through a refrigerant line 5, and the heat pump indoor unit 3 preferably employs an indoor duct machine, and the air source heat pump unit 1 belongs to those skilled in the art. Well-known techniques are not described in detail herein. The indoor gas-water heat exchange unit II is connected to the air outlet of the heat pump indoor unit 3, and the output end of the indoor gas-water heat exchange unit II is connected to the basic application unit III. The outdoor gas-liquid heat exchange unit IV is connected to the air outlet of the heat pump outdoor unit 4, and the output end of the outdoor gas-liquid heat exchange unit IV is connected to the waste energy application unit V.

As shown in FIG. 1 , the indoor gas water heat exchange unit II includes a gas water heat exchanger 1 and a gas water heat exchange controller 18 . The gas-water heat exchange controller 18 is provided with a temperature and humidity detecting module for detecting temperature and humidity. The gas-water heat exchanger 1 comprises a casing and a gas-water heat exchange assembly 2 disposed in the inner cavity of the casing, the casing has a casing air inlet and a casing air outlet, and the casing air inlet and the air outlet of the heat pump indoor unit 3 pass through the soft air outlet. The connection 16 is connected, the gas-water heat exchange assembly 2 has a water inlet and a water outlet, the water inlet is connected with the water inlet pipe 61, the water outlet is connected with the water outlet pipe 62, the circulation pipe 62 is provided with a circulation pump 10, and the circulation pump 10 is exchanged with the gas water. The heat controller 18 is electrically connected, and the circulation pump 10 may be disposed on the inlet pipe 61. The outlet pipe 62 is also provided with a known pressure relief valve, a filter 7, a pressure gauge 8, and a temperature gauge 9.

In order to enhance the heat exchange effect, the gas-water heat exchange component 2 preferably adopts a high-efficiency internally-threaded copper tube aluminum-wing coated heat exchange component, that is, the inner-threaded copper tube jacket is provided with aluminum fins, and is on the outer surface of the heat exchange component. It is coated with a heat absorbing film. Internally threaded copper tubes, aluminum fins, and heat absorbing membranes are all well known to those skilled in the art and will not be described or illustrated in detail herein.

As shown in Fig. 1, the case where the gas-water heat exchange unit 2 is provided in series is illustrated. Obviously, the number of gas-water heat exchange components 2 is not limited to two, and the number of gas-water heat exchange components 2 may be increased or decreased according to actual needs. For example, in order to increase heat exchange power, three or more may be arranged in series. In the case where the basic application unit III has a low load, it is also possible to set only one. The heat exchange power of the high efficiency internally threaded copper tube aluminum wing coated heat exchange assembly matches the power of the heat pump unit. There is no limit to the number here.

As shown in FIG. 1, the air outlet of the casing of the gas-water heat exchanger 1 is connected to the air inlet (ie, the air return port) of the heat pump indoor unit 3 through the circulation duct 14. By connecting in this way, a closed loop of indoor air as indicated by a solid arrow can be formed. Of course, it is also possible to design an open loop method well known to those skilled in the art of cost, and details are not described herein again.

As shown in FIG. 1, an air filtering device 15 is disposed in the casing inner chamber of the gas-water heat exchanger 1 near the casing air inlet. In the present embodiment, the air filtering device 15 specifically adopts an air primary effect filter, which can filter air dust particles and the like sent into the room to improve indoor air quality.

As shown in FIG. 1 , the casing of the gas-water heat exchanger 1 and the heat pump indoor unit 3 are connected to the condensed water discharge line, so as to collect and discharge the condensed water generated under the cooling condition.

Among them, the air source heat pump unit 1 is also provided with an internal pipe temperature sensor (not shown) in the heat exchange tube of the heat pump indoor unit 3. The internal pipe temperature sensor, the heat pump indoor unit 3, and the heat pump outdoor unit 4 are electrically connected to the heat pump controller 17, respectively.

As shown in FIG. 1 , the basic application unit III is connected to the gas-water heat exchange unit II through an inlet pipe 61 and an outlet pipe 62. The basic application unit III includes a plumbing and heating unit 11 , a water-cooling and cooling unit 12 , and a domestic hot water arranged in parallel. Unit 13.

As shown in FIG. 2, the floor heating unit 11 includes a floor heating pipe 111 which is laid on the indoor floor. The water inlet end and the water outlet end of the floor heating pipe 111 are respectively connected to the water outlet pipe 62 and the water inlet pipe 61. The floor heating pipe 111 has a diameter of approximately 16 -20mm. The floor heating pipes 111 are usually provided in parallel with a plurality of channels, and are connected to the water outlet pipe 62 and the water inlet pipe 61 through the input end water collecting device of the floor heating system.

As shown in FIG. 2, the water-cooling refrigeration unit 12 includes a capillary network 121 which is laid on the wall surface and the top surface of the room. The water inlet end and the water outlet end of the capillary network 121 are respectively connected to the water outlet pipe 62 and the water inlet pipe 61, and the capillary network 121 is connected. The diameter is roughly 6-9mm. The capillary network 121 is usually provided in parallel with a plurality of channels, and is connected to the outlet pipe 62 and the inlet pipe 61 through the input end of the capillary cold radiation system.

As shown in FIG. 2, the domestic hot water unit 13 includes a domestic hot water tank 131 and a water tank heat exchange tube 132 disposed in the domestic hot water tank 131. The water inlet end and the water outlet end of the water tank heat exchange tube 132 are respectively separated from the water outlet end. The water pipe 62 and the water inlet pipe 61 are connected. A well-known electric auxiliary heat device 133 is further provided in the domestic hot water tank 131, so that when the heat is insufficient, an electric heating method is employed. The domestic hot water unit 13 is not limited to the above-described form of the water tank built-in tubular heat exchanger, and a known small brazed plate heat exchanger method can also be used.

As shown in FIG. 1, the outdoor gas-liquid heat exchange unit IV includes a gas-liquid heat exchanger 20 and a gas-liquid heat exchange controller 19. The gas-liquid heat exchanger 20 includes a casing and a gas-liquid heat exchange assembly 21 disposed in the inner cavity of the casing, the casing has a casing air inlet and a casing air outlet, and the casing air inlet is connected to the air outlet of the heat pump outdoor unit 4, The gas-liquid heat exchange unit 21 has a liquid inlet port and a liquid outlet port, the liquid inlet port is connected to the liquid inlet pipe 23, the liquid outlet port is connected to the liquid outlet pipe 24, and the liquid outlet pipe 24 or the liquid inlet pipe 23 is provided with gas and liquid. The heat exchange controller 19 is electrically connected to the circulation pump 25; the discharge pipe 24 is also provided with a well-known filter, a pressure gauge and the like. Among them, the liquid in the gas-liquid heat exchange component 21 preferably adopts an antifreeze solution of -20 to -30 ° C, and the antifreeze liquid has the advantages of antifreeze in winter, anti-boiling in summer, anti-scaling in the whole year, anti-corrosion and the like, and is favorable for ensuring smoothness of the system. run.

The structure of the gas-liquid heat exchange component 21 is basically the same as that of the gas-water heat exchange component 2 described above. In order to enhance the heat exchange effect, the gas-liquid heat exchange component 21 also adopts a high-efficiency internally-threaded copper tube aluminum wing coating heat exchange component.

Here, as shown in FIG. 1, the case where two gas-liquid heat exchange components 21 are provided in series is illustrated. Obviously, the number of the gas-liquid heat exchange components 2 is not limited to two, and the number of the gas-liquid heat exchange components 21 may be increased or decreased according to actual needs. For example, in order to increase the heat exchange power, three or more may be arranged in series. If the V load of the waste energy application unit is low, only one can be set. The heat exchange power of the high efficiency internally threaded copper tube aluminum wing coated heat exchange assembly matches the power of the heat pump unit. There is no limit to the number here.

Wherein, the inner cavity of the gas-liquid heat exchanger 20 is also provided with an air filtering device near the air inlet of the casing. In the embodiment, the air filtering device specifically adopts an air primary effect filter for filtering air dust particles and the like to improve air quality.

Among them, the gas-liquid heat exchanger 20 and the heat pump outdoor unit 4 are optimally designed as a split assembly structure. The outdoor unit is compact in structure, small in space, and flexible in installation.

The liquid inlet pipe 23 and the liquid outlet pipe 24 are connected to the waste energy application unit V, and the waste energy application unit V includes a waste heat application unit and a waste cooling application unit. The waste heat application unit includes the above-mentioned domestic hot water unit 13, the waste heat drying unit 27, the ground source heat storage unit, and the like; the waste heat drying unit 27, for example, may be used for slime, wine slag, potato dregs, bean dregs, etc. Drying unit for materials. The waste cooling application unit includes an auxiliary refrigerating and freezing unit 26, a ground source regenerative unit, and the like, and the auxiliary refrigerating and freezing unit 26 can be used for auxiliary refrigeration of a food refrigerating or freezer with a refrigerating source. Wherein, the ground source energy storage unit 28 comprises a vertical double U-shaped energy storage pipe network (not shown) having a diameter of 25-32 mm buried in the soil of 30-50 meters below the surface, in the cooling condition, The ground source energy storage unit 28 can be used as a ground source heat storage unit to realize a ground source heat storage function for auxiliary heating in winter; in the heating condition, the ground source energy storage unit 28 can be used as a ground source cold storage unit. , to achieve ground source cold storage energy, in preparation for auxiliary cooling in summer.

Obviously, the waste heat application unit and the waste cooling application unit are not limited to the above-mentioned several methods, and can also be applied to other occasions where heat is required and cold is used.

The working process of the full-efficiency air source heat pump system of the present application is as follows:

In the summer, during the cooling condition, the air source heat pump unit I operates to realize the heat exchange between the refrigerant and the air, that is, the primary heat exchange of the system; the air after the heat exchange enters the casing cavity of the gas-water heat exchanger 1 from the heat pump indoor unit 3 The heat exchange with the water in the gas-water heat exchange unit 2 is performed, that is, the secondary heat exchange of the system is realized, and the low-temperature water after the second heat exchange is circulated through the capillary network 121 of the water-cooled refrigeration unit 12 through the circulation pump 10 to realize indoor refrigeration. At the same time, the temperature and humidity detection module detects the indoor temperature and humidity index, as long as one of the indicators reaches the set value, the gas-water heat exchange controller 18 controls the circulation pump 10 to stop running, and after a period of lag, the air source heat pump unit I is stopped. The operation, so as to avoid condensation on the surface of the cold radiation enclosure such as wall or / roof due to excessive humidity or low temperature, effectively control the "dew point" during cooling operation, and achieve the industry's advocacy " High temperature cooling is the goal and energy saving and comfortable. In the cooling condition, the high-temperature air discharged from the air outlet of the heat pump outdoor unit 4 enters the housing cavity of the gas-liquid heat exchanger 20, exchanges heat with the liquid in the gas-liquid heat exchange unit 21, and the waste heat energy of the high-temperature air is transferred to The liquid in the gas-liquid heat exchange unit 21 is discharged after the high-temperature air is cooled, so as to prevent the heat pump outdoor unit 4 from attenuating or crashing due to overheating of the surrounding environment; the temperature of the liquid in the gas-liquid heat exchange unit 21 is increased, and the circulating pump is operated. 25, the high temperature liquid is carried to the heat source unit 13 of the domestic hot water unit 13, the waste heat drying unit 27, or the heat energy is stored through the ground source energy storage unit 28, in order to prepare the auxiliary heating in winter, so that the air source heat pump host generates The waste heat is recycled.

In the winter, during the heating condition, the air source heat pump unit I operates to realize the heat exchange between the refrigerant and the air, that is, the primary heat exchange of the system; the air after the heat exchange enters the casing of the gas-water heat exchanger 1 from the heat pump indoor unit 3 The chamber exchanges heat with the low-temperature water in the gas-water heat exchange unit 2, that is, the secondary heat exchange of the system is realized, and the high-temperature water after the second heat exchange is heated is circulated through the circulating pump 10 in the floor heating pipe 111 of the plumbing heating unit 11. To achieve indoor heating; when encountering the winter low temperature and high humidity "rain and snow fog" day, when the outdoor unit needs defrosting, the air source heat pump unit I is operated in the cooling condition, because the heat pump indoor unit 3 is provided with the inner tube temperature sensor, so that The unit has the function of “anti-cold wind” during defrosting. The inner tube temperature sensor detects the heat exchange tube temperature of the heat pump indoor unit 3 and the heat transfer pump controller 17. When the tube temperature does not reach the requirement, the heat pump indoor unit 3 does not work. (ie, no wind), although the air source heat pump unit I is in a cooling state during defrosting, since the heat pump indoor unit 3 does not exchange heat with the gas-water heat exchanger 1, the ground water circulation circuit is not heated by the host defrosting. The heating effect is affected, The problem of continuous cooling of the circulating water caused by the frequent frosting of the system in the winter is solved completely; the system does not need to be equipped with electric auxiliary heat device or buffer water tank, and the structure is simple; the heat pump indoor unit 3 and the heat pump outdoor unit 4 are set separately. Easy to install and maintain. In the heating condition, the low-temperature air discharged from the air outlet of the heat pump outdoor unit 4 enters the casing inner cavity of the gas-liquid heat exchanger 20, exchanges heat with the liquid in the gas-liquid heat exchange unit 21, and the waste cold energy of the low-temperature air. The liquid transferred to the gas-liquid heat exchange unit 21 is discharged after the low-temperature air is heated, so as to prevent the heat pump outdoor unit 4 from being attenuated or crashed due to excessive cooling of the surrounding environment; the temperature of the liquid in the gas-liquid heat exchange unit 21 is lowered, and the operation is stopped. The circulation pump 25 carries the cryogenic liquid to a place where the cold source of the auxiliary refrigerating and freezing unit 26 is required, or stores the cold energy through the ground source energy storage unit 28, so as to prepare the auxiliary cooling in the summer, so that the air source heat pump main unit generates waste cold. Can be recycled.

Industrial applicability

The full-efficiency air source heat pump system of the present application effectively solves the problem of "condensation" in summer and the frequent "defrosting" affecting heating in winter; the waste cold waste heat generated by the air source heat pump main unit can be recycled, energy-saving and high-efficiency, and emission reduction It avoids the host's energy efficiency attenuation or crash due to over-cooling or overheating. The unit runs efficiently, stably and reliably, and realizes multi-purpose operation.

Claims (10)

1. a full-efficiency air source heat pump system including an air source heat pump unit including a heat pump indoor unit and a heat pump outdoor unit connected through a refrigerant line; The full-efficiency air source heat pump system also includes:

   An indoor gas-water heat exchange unit, wherein the indoor gas-water heat exchange unit is connected to an air outlet of the heat pump indoor unit, and an output end of the indoor gas-water heat exchange unit is used for connecting a basic application unit;

   The outdoor gas-liquid heat exchange unit is connected to an air outlet of the heat pump outdoor unit, and an output end of the outdoor gas-liquid heat exchange unit is used for connecting the waste energy application unit.
2. The full-efficiency air source heat pump system according to claim 1, wherein the indoor gas-water heat exchange unit comprises:

   a gas-water heat exchanger comprising a casing and a gas-water heat exchange assembly disposed in the inner cavity of the casing, the casing having a casing air inlet and a casing air outlet, the casing The air inlet is connected to an air outlet of the heat pump indoor unit, and the gas-water heat exchange assembly has a water inlet and a water outlet, the water inlet is connected with an inlet pipe, and the water outlet is connected with an outlet pipe, and the outlet pipe or a circulation pump is arranged on the inlet pipe;

   The gas-water heat exchange controller is provided with a temperature and humidity detecting module, and the circulating pump is electrically connected to the gas-water heat exchange controller.
3. A full-efficiency air source heat pump system according to claim 2, wherein said gas-water heat exchange assembly comprises an internally threaded copper tube aluminum wing coating heat exchange assembly.
4. The full-efficiency air source heat pump system according to claim 2, wherein the casing air outlet is connected to an air inlet of the heat pump indoor unit through a circulation duct.
5. A full-efficiency air source heat pump system according to claim 2, wherein said air source heat pump unit further comprises a heat pump controller and an inner tube temperature sensor disposed in said heat pump indoor unit, said inner tube The temperature sensor, the heat pump indoor unit, and the heat pump outdoor unit are electrically connected to the heat pump controller, respectively.
6. A full-efficiency air source heat pump system according to claim 2, wherein said inlet pipe and said outlet pipe are connected to said basic application unit, said basic application unit comprising a plumbing heating unit arranged in parallel, and water cooling. Refrigeration unit, domestic hot water unit.
7. The full-efficiency air source heat pump system according to claim 1, wherein the outdoor gas-liquid heat exchange unit comprises:

   a gas-liquid heat exchanger comprising a casing and a gas-liquid heat exchange assembly disposed in the inner cavity of the casing, the casing having a casing air inlet, the casing air inlet and the The air outlet of the heat pump outdoor unit is connected, the gas-liquid heat exchange assembly has a liquid inlet and a liquid outlet, the liquid inlet is connected to the liquid inlet, the liquid outlet is connected to the liquid outlet, and the liquid is discharged. a circulation pump is arranged on the tube or the inlet pipe;

   A gas-liquid heat exchange controller, the circulation pump being electrically connected to the gas-liquid heat exchange controller.
8. A full-efficiency air source heat pump system according to claim 7, wherein said gas-liquid heat exchange assembly comprises an internally threaded copper tube aluminum wing coated heat exchange assembly.
9. A full-efficiency air source heat pump system according to claim 8, wherein said gas-liquid heat exchanger is assembled separately from said heat pump outdoor unit.
10. The full-efficiency air source heat pump system according to claim 8, wherein the liquid inlet pipe and the liquid discharge pipe are connected to a waste energy application unit, and the waste energy application unit comprises a waste heat application unit and/or The waste heat application unit includes a domestic hot water unit, a waste heat drying unit, and a ground source heat storage unit; and the waste cooling application unit includes an auxiliary refrigeration and freezing unit and a ground source cold storage unit.

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