CN220567533U - Air source heat pump - Google Patents

Abstract

The application provides an air source heat pump relates to domestic appliance technical field for solve the easy technical problem that freezes of water in the air source heat pump expansion tank, include: the device comprises an outdoor heat exchanger, a water circulation pipeline, a four-way reversing valve, a water tank, a compressor, an indoor heat exchanger and a heat conduction pipeline. The outdoor heat exchanger comprises a first heat exchange channel, a second heat exchange channel, a water inlet, a water outlet, a first communication port and a second communication port; the water tank comprises a first cavity communicated with the water circulation pipeline; the four-way reversing valve includes: the input liquid port, the first reversing liquid port, the second reversing liquid port and the third reversing liquid port are communicated with the second communication port; the compressor comprises a return air port communicated with the second reversing liquid port and an exhaust port communicated with the input liquid port, and the indoor heat exchanger comprises a third communication port communicated with the third reversing liquid port and a fourth communication port communicated with the first communication port; one end of the heat conducting pipeline is communicated with the exhaust port, and the other end of the heat conducting pipeline is communicated with the third communication port and is used for exchanging heat with water in the first cavity.

Description

Air source heat pump

Technical Field

The application relates to the technical field of household appliances, in particular to an air source heat pump.

Background

An air source heat pump is an energy-saving device which utilizes high potential energy to enable heat to flow from low-level heat source air to high-level heat sources. It is a form of heat pump. As the name implies, the heat pump is like a pump, and can convert low-level heat energy (such as heat contained in air, soil and water) which cannot be directly utilized into high-level heat energy which can be utilized, thereby achieving the purpose of saving part of high-level energy (such as coal, fuel gas, oil, electric energy and the like). The air source heat pump can extract heat from air, is used for indoor heating or water heater heating equipment, and can save electric energy.

The air source heat pump is split type and also integrated. The split type air heat source pump is similar to an air conditioner, and comprises an indoor unit and an outdoor unit. The heat exchanger, the water pump and other devices are arranged in the indoor unit, and the indoor unit occupies a part of indoor living space, so that living experience of a user is affected. In order to reduce the indoor space occupied by the indoor unit, an integrated air source heat pump has been developed. The integrated air source heat pump integrates the devices such as an outdoor heat exchanger, a water pump, an expansion water tank and the like on an outdoor unit.

In order to reduce the volume of the outdoor unit and realize the miniaturization design of the integrated air source heat pump, the expansion water tank is usually placed at the position of the fan of the outdoor unit at present, so that the space occupied by the compressor is saved.

However, after the expansion tank is placed in the fan position. In the heating mode, when the temperature of the wind is lower than 0 ℃ after passing through the outdoor heat exchanger, water in the expansion tank positioned beside the fan is easy to freeze, so that the expansion tank cannot work normally.

Disclosure of Invention

The application provides an air source heat pump which is used for solving the technical problem that water in an expansion tank in the related art is easy to freeze.

The application provides an air source heat pump includes: the device comprises an outdoor heat exchanger, a water circulation pipeline, a water tank, a four-way reversing valve, a compressor, an indoor heat exchanger and a heat conduction pipeline. Wherein, outdoor heat exchanger includes: the device comprises a first heat exchange channel, a second heat exchange channel, a water inlet and a water outlet which are communicated with the first heat exchange channel, and a first communication port and a second communication port which are communicated with the second heat exchange channel; the water circulation pipeline is respectively communicated with the water inlet and the water outlet to form a circulation loop; the water tank includes: the first cavity is communicated with the water circulation pipeline; the four-way reversing valve includes: an input liquid port, a first reversing liquid port, a second reversing liquid port and a third reversing liquid port; the second communication port is communicated with the first reversing liquid port; the compressor comprises a gas return port and a gas outlet, and the gas return port is communicated with the second reversing liquid port; the exhaust port is communicated with the input liquid port; the indoor heat exchanger comprises a third communication port and a fourth communication port; the third communication port is communicated with the third reversing liquid port; the fourth communication port is communicated with the first communication port; one end of the heat conducting pipeline is communicated with the exhaust port, the other end of the heat conducting pipeline is communicated with the liquid inlet, and the heat conducting pipeline is used for exchanging heat with water in the first cavity.

Therefore, one path of high-temperature high-pressure gaseous refrigerant discharged by the compressor can exchange heat with water in the first cavity through the heat conduction pipeline, so that the water tank is prevented from being frozen, and the water tank can be ensured to be normally used. And the high-temperature and high-pressure gaseous refrigerant after heat exchange with the first cavity can be converged with another high-temperature and high-pressure gaseous refrigerant discharged by the compressor, so that the circulation process of the refrigerant is completed together.

In some embodiments of the present application, the water tank further comprises: the first cavity and the second cavity are formed by dividing an elastic diaphragm, and gas is filled in the second cavity. Therefore, in the water heating process of the water circulating pipeline, the water can expand with heat and contract with cold, and the pressure is increased to extrude the heat expanded water into the water tank, so that the safe and reliable use of the whole water system is realized.

In some embodiments of the present application, the heat conducting pipe is spirally wound on the water tank.

In some embodiments of the present application, the air source heat pump further comprises: the heat preservation shell is provided with a containing cavity and an opening communicated with the containing cavity; the water tank part extends into the accommodating cavity through the opening, and the heat conducting pipeline is positioned between the water tank and the heat insulation shell.

In some embodiments of the present application, the thermally conductive line includes: a first inlet and a first outlet; the air source heat pump further includes: a bypass line; the bypass line includes: the first bypass pipeline and the second bypass pipeline are communicated with the exhaust port at one end, and the first inlet at the other end of the first bypass pipeline; one end of the second bypass pipeline is communicated with the first outlet, and the other end of the second bypass pipeline is communicated with the third communication port.

In some embodiments of the present application, the air source heat pump further comprises: and the valve is arranged on the first bypass pipeline.

In some embodiments of the present application, the valve is an electrically operated valve, and the air source heat pump further comprises: and the controller is electrically connected with the electric valve and is used for controlling the opening or closing of the electric valve.

In some embodiments of the present application, the air source heat pump further comprises: the check valve is arranged on the second bypass pipeline and is used for enabling the second bypass pipeline to conduct unidirectionally from the first outlet to the input liquid port.

In some embodiments of the present application, the air source heat pump further comprises: a water heater, the water heater comprising: a second inlet and a second outlet; the water circulation line includes: a water inlet pipeline and a water outlet pipeline; one end of the water inlet pipeline is communicated with the second outlet, and the other end of the water inlet pipeline is communicated with the water inlet; one end of the water outlet pipeline is communicated with the second inlet, and the other end of the water outlet pipeline is communicated with the water outlet.

In some embodiments of the present application, the air source heat pump further comprises: the water pump is arranged on the water inlet pipeline, and the communication part of the first cavity and the water inlet pipeline is positioned between the water pump and the outdoor heat exchanger.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate and do not limit the utility model.

FIG. 1 is one of the top views of an integrated air source heat pump of the related art;

FIG. 2 is one of the front views of an integrated air source heat pump of the related art;

FIG. 3 is a top view of a second embodiment of an integrated air source heat pump according to the related art;

FIG. 4 is a front view of a second embodiment of an integrated air source heat pump according to the related art;

fig. 5 is a schematic diagram of a connection structure of an air source heat pump according to an embodiment of the present application;

FIG. 6 is a second schematic diagram of a connection structure of an air source heat pump according to an embodiment of the present disclosure;

fig. 7 is a schematic structural diagram of a water tank according to an embodiment of the present disclosure;

FIG. 8 is a second schematic diagram of a water tank according to an embodiment of the present disclosure;

FIG. 9 is a third schematic diagram of a water tank according to an embodiment of the present disclosure;

fig. 10 is a third schematic diagram of a connection structure of an air source heat pump according to an embodiment of the present disclosure;

fig. 11 is a schematic diagram of a connection structure between a heat conducting pipe and a water tank according to an embodiment of the present disclosure;

FIG. 12 is a second schematic diagram of a connection structure between a heat-conducting pipe and a water tank according to an embodiment of the present disclosure;

fig. 13 is a third schematic diagram of a connection structure between a heat conducting pipe and a water tank according to an embodiment of the present disclosure;

fig. 14 is a top view of a connection between a heat conducting pipe and a water tank according to an embodiment of the present disclosure;

fig. 15 is a left side view of a connection of a heat conducting pipe to a water tank according to an embodiment of the present application;

fig. 16 is a front view of a connection between a heat conducting pipe and a water tank according to an embodiment of the present application;

fig. 17 is a cross-sectional view of a heat conducting pipeline and a heat insulation shell according to an embodiment of the present disclosure;

fig. 18 is a schematic perspective view of a connection between a heat conducting pipe and a water tank according to an embodiment of the present disclosure;

FIG. 19 is a schematic diagram of a connection structure of an air source heat pump according to an embodiment of the present disclosure;

FIG. 20 is a fifth schematic diagram of a connection structure of an air source heat pump according to an embodiment of the present disclosure;

fig. 21 is a schematic diagram of a connection structure of an air source heat pump according to an embodiment of the present application.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, which are generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, as provided in the accompanying drawings, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present application, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships that are conventionally put in use of the inventive product, are merely for convenience of description of the present application and simplification of description, and do not indicate or imply that the apparatus or element to be referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal," "vertical," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present application, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

For ease of understanding, the basic concepts of some terms or techniques involved in embodiments of the present utility model are first briefly described and illustrated.

Refrigerant (or refrigerant): a substance which is easily absorbed in heat to become gas and easily released in heat to become liquid. In the air source heat pump, heat energy is transferred by evaporation and condensation of a refrigerant, thereby generating a refrigerating effect.

Cooling mode: the compressor of the air source heat pump discharges a high-temperature high-pressure gaseous refrigerant, the high-temperature high-pressure gaseous refrigerant is condensed into a medium-temperature high-pressure liquid refrigerant through a condenser (namely an outdoor heat exchanger), and then the liquid refrigerant is throttled by a throttling element (such as a throttling valve, a capillary tube and the like) to become a low-temperature low-pressure liquid refrigerant, and the low-temperature low-pressure liquid refrigerant is evaporated into a low-temperature low-pressure gaseous refrigerant (refrigerant evaporation heat absorption when passing through an evaporator (an indoor heat exchanger), so that the indoor temperature is reduced); the low-temperature low-pressure gaseous refrigerant flows into the compressor, so that the circulation process of the refrigerant in the air source heat pump refrigeration mode is completed.

Heating mode: the compressor of the air source heat pump discharges a high-temperature high-pressure gaseous refrigerant, the high-temperature high-pressure gaseous refrigerant is condensed into a medium-temperature high-pressure liquid refrigerant (refrigerant condensation and heat release are carried out, so that the indoor temperature is improved), and then the liquid refrigerant is throttled by a throttling element (such as a throttle valve and the like) to become a low-temperature low-pressure liquid refrigerant, and the low-temperature low-pressure liquid refrigerant is evaporated into a low-temperature low-pressure gaseous refrigerant when passing through an evaporator (outdoor heat exchanger); the low-temperature low-pressure gaseous refrigerant flows into the compressor, so that the circulation process of the refrigerant in the air source heat pump heating mode is completed.

Expansion valve: the valve consists of a valve body and a coil, and is used for throttling, reducing pressure and regulating flow. The expansion valve in the air source heat pump can throttle the medium-temperature high-pressure liquid refrigerant into the low-temperature low-pressure liquid refrigerant, then the refrigerant absorbs heat in the evaporator to achieve the refrigerating effect, and the valve flow is controlled through the superheat degree change of the outlet of the evaporator.

The air source heat pump in the present application performs a refrigeration cycle and a heating cycle of the air source heat pump by using a compressor, a condenser, and an evaporator as a refrigerant circulation circuit. Both the refrigeration cycle and the heating cycle include a series of processes involving compression, condensation, expansion, and evaporation, and supply a refrigerant to the air that has been conditioned and heat exchanged.

The compressor compresses a refrigerant gas in a high-temperature and high-pressure state and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.

The expansion valve expands the liquid-phase refrigerant in a high-temperature and high-pressure state condensed in the condenser into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the electronic expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator may achieve a cooling effect by exchanging heat with a material to be cooled using latent heat of evaporation of a refrigerant. The air source heat pump can regulate the temperature of the indoor space throughout the cycle.

Both the indoor heat exchanger and the outdoor heat exchanger may be used as a condenser or an evaporator. I.e. when in heating mode, the indoor heat exchanger acts as a condenser and the outdoor heat exchanger acts as an evaporator; when in the cooling mode, the indoor heat exchanger acts as an evaporator and the outdoor heat exchanger acts as a condenser.

The air source heat pump and the air conditioner have the same refrigerating system principle, both adopt the reverse Carnot cycle principle, take the compressor as power and take the refrigerant as carrier, and transfer heat between air and water through isothermal evaporation, adiabatic compression, isothermal condensation and adiabatic expansion in sequence.

The air source heat pump in the related art includes: the split type air source heat pump and the integrated air source heat pump are similar to an air conditioner in structure, namely the split type air source heat pump comprises an indoor unit and an outdoor unit, the heat exchanger, the water pump and other devices are arranged in the indoor unit, and the indoor opportunity occupies a part of indoor living space, so that living experience of a user is influenced. Therefore, in order to avoid that the indoor unit occupies a large indoor living space, an integrated air source heat pump has been developed. As shown in fig. 1 and 2, the integrated air source heat pump 00 integrates the heat exchanger 01, the inductance coil assembly 02, the expansion tank 03, the fan 04 and other devices on the outdoor unit, so as to reduce the indoor space occupied by the indoor unit.

In modern society of the size and the price, users have high requirements on the maximum utilization of space, and the large capacity of a small unit becomes a target for people to chase. Therefore, how to realize the miniaturization design of the integrated air source heat pump is a research direction of comparatively hot spots in the industry.

As shown in fig. 3 and 4, in the related art, the expansion tank 03 is disposed at the position of the fan 04, and the expansion tank 03 reasonably utilizes the space at the position of the fan 04, so that the expansion tank 03 does not need to occupy additional space, and the volume of the outdoor unit can be reduced. However, after the expansion tank 03 is placed at the position of the fan 04. In the heating mode, when the temperature of the wind after passing through the outdoor heat exchanger is lower than 0 ℃, water in the expansion tank 03 located at the side of the fan is easily frozen, thereby causing the expansion tank 03 to fail to operate normally.

The present application provides an air source heat pump, as shown in fig. 5, the air source heat pump 100 includes: the outdoor heat exchanger 10, the water circulation line 20, the water tank 30, the compressor 40, the indoor heat exchanger 50, the heat conduction line 60 and the four-way reversing valve 70.

As shown in fig. 6, the outdoor heat exchanger 10 includes: the medium in the first heat exchange channel 11 can exchange heat with the medium in the second heat exchange channel 12, the first heat exchange channel 11, the second heat exchange channel 12, the water inlet 111 and the water outlet 112 which are communicated with the first heat exchange channel 11, and the first communication port 121 and the second communication port 122 which are communicated with the second heat exchange channel 12.

The water circulation line 20 is respectively communicated with the water inlet 111 and the water outlet 112 to form a circulation loop. The water circulation pipeline 20 can be communicated with the water heater, and the water circulation pipeline 20 can provide energy (namely heat) for the water heater, so that the energy consumption of the water heater is reduced.

Alternatively, the material of the water circulation line 20 may be a metal material, for example, the metal material may be stainless steel, aluminum alloy, zinc-containing steel plate, or the like. Thus, the water circulation pipe 20 has a certain strength, so that the deformation of the water circulation pipe 20 when colliding with other objects can be reduced, and the service life of the water circulation pipe 20 can be prolonged.

Alternatively, the material of the water circulation line 20 may be a plastic product, for example, acrylonitrile butadiene styrene (ABS, acrylonitrile butadiene styrene) plastic, high impact polystyrene (HIPS, high impact polystyrene), polycarbonate (PC), polyethylene terephthalate (PET, polyethylene glycol terephthalate), or the like. Thus, the water circulation pipeline 20 can be manufactured by integrally molding the mold by using an injection molding process, so that the production efficiency is improved, and the production cost is reduced.

A water tank 30, comprising: the first cavity is communicated with the water circulation pipeline 20;

in one possible implementation, the water tank 30 may be a conventional water tank, with the water tank 30 being used to provide water supply to the circulation line.

In another possible implementation, the water tank 30 may be an expansion tank, which may further include: the first cavity and the second cavity are formed by dividing an elastic diaphragm, and the second cavity is filled with gas. Illustratively, the second cavity may be filled with nitrogen. In this way, during the heating process, the water in the water circulation pipeline 20 expands with heat and contracts with cold, and the pressure is increased to squeeze the heat expanded water into the water tank 30, so that the whole water system is safely and reliably used.

The shape of the water tank 30 may be a regular three-dimensional structure, such as a cylinder, a cuboid, or the like, or alternatively, the shape of the water tank 30 may be an irregular three-dimensional structure, such as a triangular prism, a prism, or the like, which is not limited in this application.

In one possible implementation, as shown in fig. 7, the water tank 30 may be a bladder-type water tank 30, and the water tank 30 may include: a tank body 31, wherein a containing cavity, a waterway inlet 32 communicated with the containing cavity and an inflation inlet 33 are arranged in the tank body 31; a rubber film 34 is arranged in the tank 31, a first cavity 35 is formed by surrounding the rubber film 34, a second cavity 36 is formed by surrounding the rubber film 34 and the tank 31, and the second cavity 36 is nested outside the first cavity 35. The first chamber 35 communicates with the waterway inlet 32 and the second chamber 36 communicates with the inflation inlet 33.

In order to facilitate inflation of the second chamber 36 and to avoid leakage of gas in the second chamber 36, a valve core may be provided at the inflation port 33, which valve core seals the inflation port 33. Thus, the production of workers is convenient.

In another possible implementation, as shown in fig. 8, the water tank 30 may be a diaphragm (cylindrical tank), and the water tank 30 may include: the tank body 31, a rubber film 34 is disposed in the tank body 31, and the rubber film 34 divides the cavity in the tank body 31 into two parts in the radial direction, namely a first cavity 35 and a second cavity 36. Likewise, the first chamber 35 communicates with the waterway inlet 32, and the second chamber 36 communicates with the inflation inlet 33. A valve core may also be provided at the inflation port 33, which seals the inflation port 33.

In yet another possible implementation, as shown in fig. 9, the water tank 30 may be a diaphragm type of oblate, flat square tank, and the water tank 30 may include: the tank body 31 is also provided with a rubber film 34 in the tank body 31, and the rubber film 34 axially extends to divide the cavity in the tank body 31 into two parts, namely a first cavity 35 and a second cavity 36. Likewise, the first chamber 35 communicates with the waterway inlet 32, and the second chamber 36 communicates with the inflation inlet 33. A valve core may also be provided at the inflation port 33, which seals the inflation port 33. It will be appreciated that the outdoor heat exchanger 10 is an evaporator when in the cooling mode. In this way, after the water in the water circulation pipeline 20 exchanges heat with the medium (i.e. the refrigerant) in the second heat exchange channel 12 through the first heat exchange channel 11, the water is heated and heated to generate expansion and contraction, so that the pressure in the water circulation pipeline 20 is increased. So, the water route that pressure increases extrudes the water of thermal expansion into first cavity 35 in, and first cavity 35 extrusion second cavity 36 that has the diaphragm, this water tank 30 water storage constant pressure like this guarantees the safe and reliable of whole hydrologic cycle.

In addition, as shown in fig. 10, the four-way reversing valve 70 may include: an input liquid port A, a first reversing liquid port B, a second reversing liquid port C and a third reversing liquid port D; the second communication port 122 communicates with the first reversing liquid port B.

In addition, as shown in fig. 6, the compressor 40 includes: a return air port 41 and an exhaust air port 42, the return air port 41 being in communication with the second reversing liquid port C. The compressor 40 (compressor) is a driven fluid machine that lifts low-pressure gas to high-pressure gas, and is the heart of a refrigeration system. The low-temperature low-pressure gaseous refrigerant can be sucked, the piston is driven to compress the low-temperature low-pressure gaseous refrigerant through the operation of the motor, and then the high-temperature high-pressure gaseous refrigerant is discharged to provide power for refrigeration cycle.

An indoor heat exchanger 50, the indoor heat exchanger 50 being capable of converting gas or vapor into liquid, or liquid into gas or vapor, the outdoor heat exchanger 10 transferring refrigerant energy (i.e., cold or heat medium) in the tubes into the air in the vicinity of the tubes in a rapid manner. Thus, the indoor temperature is reduced or raised. The indoor heat exchanger 50 includes a third communication port 51 and a fourth communication port 52; the third communication port 51 communicates with the third reversing liquid port D; the fourth communication port 52 communicates with the first communication port 121;

one end of the heat conducting pipeline 60 is communicated with the air outlet 42, and the other end is communicated with the liquid inlet A, wherein the heat conducting pipeline 60 is used for exchanging heat with water in the first cavity 35.

It will be appreciated that, optionally, the air source heat pump 100 may further comprise: an electronic expansion valve 71, the electronic expansion valve 71 is composed of a valve body and a coil, and the electronic expansion valve 71 is used for throttling, reducing pressure and adjusting flow. The electronic expansion valve 71 can expand the liquid refrigerant in a medium-temperature high-pressure state condensed in the condenser into a low-temperature low-pressure gaseous refrigerant.

Thus, when the air source heat pump 100 is in the cooling mode, the compressor 40 is started, the input port a of the four-way reversing valve 70 communicates with the first reversing port B, and the second reversing port C communicates with the third reversing port D. The first path of the high-temperature high-pressure gaseous refrigerant discharged by the compressor 40 passes through the input liquid port A of the four-way reversing valve 70, flows out from the first reversing liquid port B to the outdoor heat exchanger 10, is condensed into a medium-temperature high-pressure supercooled liquid refrigerant at the outdoor heat exchanger 10, and can sequentially pass through the electronic expansion valve 71, the flow divider 72 and the indoor heat exchanger 50; the medium-temperature high-pressure supercooled liquid refrigerant is throttled to a low-temperature low-pressure liquid refrigerant when passing through the electronic expansion valve 71, and the low-temperature low-pressure liquid refrigerant is evaporated to a low-temperature low-pressure gaseous refrigerant (refrigerant evaporation absorbs heat, thereby reducing the indoor temperature) when passing through the indoor heat exchanger 50; the low-temperature low-pressure gaseous refrigerant flows into the compressor 40 from the second reversing liquid port C through the third reversing liquid port D of the four-way reversing valve 70, thus completing the circulation of the refrigerant during the cooling mode of the air source heat pump 100.

In addition, the high-temperature and high-pressure gaseous refrigerant discharged from the compressor 40 enters the heat conducting pipeline 60 through the second path, and exchanges heat with water in the water tank 30 through the heat conducting pipeline 60, so that the water in the water tank 30 is heated, and the water in the water tank 30 is prevented from freezing; then, the high-temperature and high-pressure gaseous refrigerant enters the input liquid port A and is converged … with the first-path high-temperature and high-pressure gaseous refrigerant discharged by the compressor 40, and finally the circulation of the refrigerant in the refrigerating mode of the air source heat pump 100 is completed.

When the air source heat pump 100 is in the heating mode, the compressor 40 is started, the input port a of the four-way reversing valve 70 is communicated with the third reversing port D, and the first reversing port B is communicated with the second reversing port C. The first path of the high-temperature high-pressure gaseous refrigerant discharged by the compressor 40 passes through the input liquid port A of the four-way reversing valve 70 and flows out from the third reversing liquid port D to the indoor heat exchanger 50, the high-temperature high-pressure gaseous refrigerant is condensed into a medium-temperature high-pressure supercooling liquid refrigerant (refrigerant condensation and heat release are carried out, so that the indoor temperature is improved) at the indoor heat exchanger 50, and the medium-temperature high-pressure supercooling liquid refrigerant can sequentially pass through the flow divider 72, the electronic expansion valve 71 and the indoor heat exchanger 50; the intermediate-temperature high-pressure supercooled liquid refrigerant is throttled to a low-temperature low-pressure liquid refrigerant when passing through the electronic expansion valve 71, and the low-temperature low-pressure liquid refrigerant is evaporated to a low-temperature low-pressure gaseous refrigerant when passing through the outdoor heat exchanger 10; the low-temperature low-pressure gaseous refrigerant flows into the compressor 40 from the second reversing liquid port C through the first reversing liquid port B of the four-way reversing valve 70, thus completing the circulation of the refrigerant in the heating mode of the air source heat pump 100.

In addition, the high-temperature and high-pressure gaseous refrigerant discharged from the compressor 40 enters the heat conducting pipeline 60, and exchanges heat with the water in the water tank 30 through the heat conducting pipeline 60, so that the water in the water tank 30 is heated, and the water in the water tank 30 is prevented from freezing. Then, the high-temperature and high-pressure gaseous refrigerant enters the liquid inlet A and finally circulates with the first path of high-temperature and high-pressure gaseous refrigerant … discharged by the compressor 40 in the refrigerating mode of the air source heat pump 100.

Optionally, the air source heat pump 100 may further include: and a throttle valve capable of throttling the liquid refrigerant in a medium-temperature high-pressure state condensed in the condenser into a low-temperature low-pressure gaseous refrigerant.

Wherein either the throttle valve or the expansion valve may be provided on the line between the indoor heat exchanger 50 and the outdoor heat exchanger 10.

The air source heat pump 100 provided herein may include: an outdoor heat exchanger 10, a water tank 30, a water circulation line 20, a compressor 40, an indoor heat exchanger 50, a heat conduction line 60, and a four-way reversing valve 70, the outdoor heat exchanger 10 comprising: a first heat exchange passage 11, a second heat exchange passage 12, a water inlet 111 and a water outlet 112 communicating with the first heat exchange passage 11, and a first communication port 121 and a second communication port 122 communicating with the second heat exchange passage 12; the water inlet 111 and the water outlet 112 are respectively communicated with the water circulation pipeline 20 to form a water circulation loop. The water tank 30 includes: the first cavity 35, the first cavity 35 communicates with the water circulation line 20; the four-way reversing valve 70 includes: an input liquid port A, a first reversing liquid port B, a second reversing liquid port C and a third reversing liquid port D; the second communication port 122 is communicated with the first reversing liquid port B; the compressor 40 includes: the air return port 41 and the air exhaust port 42, the air return port 41 is communicated with the second reversing liquid port C; the exhaust port 42 communicates with the input liquid port a; the indoor heat exchanger 50 includes a third communication port 51 and a fourth communication port 52; the third communication port 51 communicates with the third reversing liquid port D; the fourth communication port 52 communicates with the first communication port 121; the heat conducting pipeline 60 has one end communicated with the exhaust port 42 and the other end communicated with the liquid inlet A, and the heat conducting pipeline 60 is used for exchanging heat with water in the first cavity.

In this way, one path of the high-temperature and high-pressure gaseous refrigerant discharged by the compressor 40 can exchange heat with the water in the first cavity 35 through the heat conducting pipeline 60, so that the water tank 30 is prevented from being frozen, and the water tank 30 can be ensured to be normally used. The high-temperature and high-pressure gaseous refrigerant after heat exchange with the first cavity 35 can be combined with another high-temperature and high-pressure gaseous refrigerant discharged from the compressor 40, so as to complete the circulation process of the refrigerant.

In some embodiments, as shown in fig. 11, 12 and 13, the heat conducting pipe 60 can be made of a heat conducting material, and the heat conducting pipe 60 is spirally wound on the water tank 30. In this way, the high-temperature high-pressure gaseous refrigerant in the heat conducting pipeline 60 can transfer heat energy to the water tank 30 through the heat conducting pipeline 60, so as to heat the water in the water tank 30 and avoid freezing the water in the water tank 30.

In other embodiments, the heat conducting pipe 60 is made of a heat conducting material, and the heat conducting pipe 60 extends into the first cavity 35, so that the high-temperature and high-pressure gaseous refrigerant in the heat conducting pipe 60 can directly transfer heat energy to the water in the first cavity 35 through the heat conducting pipe 60 to heat the water in the first cavity 35, so as to avoid freezing the water in the first cavity 35.

In still other embodiments, as shown in fig. 14, 15 and 16, the tank 30 may be a diaphragm of an oblate, flat square tank, and the thermally conductive line 60 may be coiled on one side of the tank 30 (i.e., the side adjacent the first chamber 35).

The heat conducting pipe 60 may be, for example, a copper pipe, which is not limited in this application.

To ensure the heating effect of the heat conducting line 60, in some embodiments, as shown in fig. 17, the air source heat pump 100 further includes: a heat-insulating housing 73, wherein a containing cavity and an opening communicated with the containing cavity are formed in the heat-insulating housing 73; the water tank 30 partially extends into the accommodating chamber through the opening, and the heat conducting pipeline 60 is positioned between the water tank 30 and the heat insulation shell.

The material of the heat-insulating housing 73 may be glass wool, heat-insulating blanket, heat-insulating foam glass, polyurethane, or the like, which is not limited in this application.

In this way, the heat in the heat conducting pipeline 60 is not easy to overflow out of the heat insulating housing 73, and the cold outside the heat insulating housing 73 is not easy to flow into the heat insulating housing 73, so that the heating effect of the heat conducting pipeline 60 is ensured, and the water in the first cavity 35 is prevented from freezing.

In some embodiments, as shown in fig. 18, the thermally conductive line 60 includes: a first inlet 61 and a first outlet 62; the first inlet 61 and the first outlet 62 are both disposed proximate to the water tank 30. The air source heat pump 100 further includes: bypass line 80.

In addition, as shown in fig. 18 and 19, the bypass line 80 may include: a first bypass line 81 and a second bypass line 82, one end of the first bypass line 81 being in communication with the exhaust port 42, the other end of the first bypass line 81 being in communication with the first inlet 61; one end of the second bypass line 82 communicates with the first outlet 62, and the other end of the second bypass line 82 communicates with the inlet a. In this way, the heat conduction pipe 60 communicates with the exhaust port 42 through the first bypass pipe 81, and the heat conduction pipe 60 communicates with the inlet port a through the second bypass pipe 82.

In one possible implementation, the bypass line 80 is a heat-insulating material, which may be rock wool, polyurethane, glass wool, etc., as not limited in this application.

In another possible implementation, the bypass line 80 is wrapped with a thermal insulating layer, which may be a thermal insulating material, for example, rock wool, polyurethane, glass wool, or the like, which is not limited in this application.

Thus, the heat waste of the compressor 40 during the process of delivering the high-temperature high-pressure gaseous refrigerant to the heat conducting pipeline 60 can be avoided.

In one possible implementation, the heat-conducting pipe 60 and the water tank 30 may be integrally formed, so that the assembly process of the air-source heat pump 100 (i.e., the process of connecting the heat-conducting pipe 60 and the water tank 30) may be reduced.

Illustratively, the thermally conductive line 60 may be welded to the tank 30 by pipe clamps, and the connection of the thermally conductive line 60 to the first bypass line 81 and the second bypass line 82 may be by threaded nano-connection caps. In this way, the connection between the heat conducting pipe 60 and the water tank 30 and the connection between the bypass pipe 80 and the heat conducting pipe 60 are more convenient and reliable.

In some embodiments, as shown in fig. 20, the air source heat pump 100 may further include: a valve 90, the valve 90 being arranged on the first bypass line 81. The valve 90 is used to control whether the high-temperature and high-pressure gaseous refrigerant discharged from the compressor 40 can flow into the heat conducting pipe 60.

Thus, when the air source heat pump 100 is in the cooling mode, the outdoor heat exchanger 10 is used as a condenser in the cooling mode, and the temperature near the outdoor heat exchanger 10 is high, so that the water tank 30 is not frozen, and the valve 90 can be controlled to be closed, thereby avoiding the waste of heat in the high-temperature high-pressure gaseous refrigerant discharged by the compressor 40.

In one possible implementation, the valve 90 is an electrically operated valve, which may be, for example, a solenoid valve.

In addition, the air source heat pump 100 further includes: and the controller is electrically connected with the electric valve and is used for controlling the opening or closing of the electric valve.

The controller refers to a device that can generate an operation control signal according to the instruction operation code and the timing signal, and instruct the air source heat pump 100 to execute a control instruction. By way of example, the controller may be a central processing unit (central processing unit, CPU), a general purpose processor network processor (network processor, NP), a digital signal processor (digital signal processing, DSP), a programmable logic device (programmable logic device, PLD), a microprocessor, a microcontroller, or any combination thereof. The controller may also be any other device having processing functions, such as a circuit, a device, or a software module, which is not limited in any way by the embodiments of the present application.

In one possible implementation, the controller may be configured to: when the air source heat pump 100 starts to operate in the cooling mode, the controller controls the electric valve to be opened; when the air source heat pump 100 starts to operate in the heating mode, the controller controls the electric valve to be closed.

In another possible implementation, the air source heat pump 100 further includes: the first temperature sensor is arranged near the condenser and is used for detecting the air outlet temperature value of the condenser; the second temperature sensor is arranged outdoors and is used for detecting an ambient temperature value; the controller is electrically connected with the first temperature sensor and the second temperature sensor.

The controller may be further configured to: when the air source heat pump 100 operates in the heating mode, if it is detected that the outlet air temperature value of the condenser is smaller than the first preset value, the electric valve is controlled to be opened, so that the high-temperature and high-pressure gaseous refrigerant discharged from the compressor 40 flows into the heat conducting pipeline 60. The first preset value may be, for example, 2 degrees celsius, 3 degrees celsius, or the like, which is not limited in this application.

When the air source heat pump 100 operates in the heating mode, if the detected ambient temperature value is less than the second preset value, the controller controls the electric valve to open, so that the high-temperature and high-pressure gaseous refrigerant discharged from the compressor 40 flows into the heat conducting pipeline 60. The second preset value may be, for example, -5 degrees celsius, -4 degrees celsius, etc., which is not limited in this application.

When the air source heat pump 100 is in the cooling mode, if the unit operation environment is smaller than the third preset value, the controller controls the electric valve to open, so that the high-temperature and high-pressure gaseous refrigerant discharged from the compressor 40 flows into the heat conducting pipeline 60. The third preset value may be the same as the second preset value or different from the second preset value. The third preset value may be, for example, -5 degrees celsius, -4 degrees celsius, etc., which is not limited in this application.

In some embodiments, as shown in fig. 20, the air source heat pump 100 further includes: a check valve 91, the check valve 91 being provided in the second bypass line 82, the check valve 91 being configured to allow the second bypass line 82 to be in one-way communication from the first outlet 62 to the inlet a. Thus, the refrigerant can flow in one direction, and the temperature of the water tank 30 is prevented from being lowered due to the backflow of the refrigerant after heat exchange with the water tank 30.

In some embodiments, the air source heat pump 100 further comprises: a water heater, the water heater comprising: a second inlet and a second outlet; as further shown in fig. 20, the water circulation line 20 includes: a water inlet line 21 and a water outlet line 22; wherein, one end of the water inlet pipeline 21 is communicated with the second outlet, and the other end of the water inlet pipeline 21 is communicated with the water inlet 111; one end of the water outlet pipeline 22 is communicated with the second inlet, and the other end of the water outlet pipeline 22 is communicated with the water outlet 112.

In this way, the water heater is communicated with the outdoor heat exchanger 10 through the water circulation line 20, and when the air source heat pump 100 is operated in the quenching mode, water in the water circulation line 20 exchanges heat with the refrigerant in the second heat exchange channel 12 in the first heat exchange channel 11 of the outdoor heat exchanger 10, and the water in the first heat exchange channel 11 is warmed up, so that heat discharged from the outdoor heat exchanger 10 is recovered, thereby reducing energy consumption required for heating water of the water heater.

In one possible implementation, the air source heat pump 100 may further include: a water pump is provided on the water intake pipe 21, and a place where the first chamber 35 communicates with the water intake pipe 21 is located between the water pump and the outdoor heat exchanger 10.

In this way, the water pump can improve the water circulation of the water circulating pipeline 20, and the water tank 30 is communicated with the water outlet side of the water pump because the pressure of the water outlet side of the water pump is higher, so that the stable operation of water circulation is ensured.

Further, in one possible design, the air source heat pump 100 may further include: a water flow switch 92, the water flow switch 92 may be provided on the line between the water pump and the first chamber 35. Thus, the water circulation line 20 can be controlled to stop circulation by the water flow switch 92.

In some embodiments, as shown in fig. 21, the air source heat pump 100 may further include: a first high-voltage switch 93 and a second high-voltage switch 94, the first high-voltage switch 93 and the second high-voltage switch 94 being disposed on a pipe between the discharge port of the compressor 40 and the four-way reversing valve 70, the first high-voltage switch 93 and the second high-voltage switch 94 being configured to issue an alarm when detecting that a pressure value in the pipe exceeds a preset value. In this way, the air-source heat pump 100 is prevented from having too high an outlet pressure, and the service life of the compressor 40 is reduced.

Also, in some embodiments, as shown in fig. 21, the air source heat pump 100 may further include: the low-pressure switch 95 is arranged on a pipeline between the four-way reversing valve 70 and the air return port 41, and the low-pressure switch 95 is used for giving an alarm when the pressure value is detected to be smaller than a preset value. In this way, the air source heat pump 100 is not operated stably to avoid an excessively low intake side pressure of the compressor 40.

In addition, as shown in fig. 21, in some embodiments, the air source heat pump 100 may further include: a first filter 96 and a second filter 97, the first filter 96 and the second filter 97 are respectively arranged on the pipelines on two opposite sides of the electronic expansion valve 71, and the first filter 96 and the second filter 97 are used for filtering some impurities (such as welding slag, tiny impurities and the like) in the refrigerant so as to avoid adverse effects of the impurities on the electronic expansion valve 71.

The foregoing is merely a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any changes or substitutions within the technical scope of the present disclosure should be covered in the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. An air source heat pump, comprising:

an outdoor heat exchanger comprising: the device comprises a first heat exchange channel, a second heat exchange channel, a water inlet and a water outlet which are communicated with the first heat exchange channel, and a first communication port and a second communication port which are communicated with the second heat exchange channel;

the water circulation pipeline is respectively communicated with the water inlet and the water outlet to form a circulation loop;

a water tank, comprising: the first cavity is communicated with the water circulation pipeline;

a four-way reversing valve comprising: an input liquid port, a first reversing liquid port, a second reversing liquid port and a third reversing liquid port; the second communication port is communicated with the first reversing liquid port;

the compressor comprises an air return port and an air exhaust port, and the air return port is communicated with the second reversing liquid port; the exhaust port is communicated with the input liquid port;

the indoor heat exchanger comprises a third communication port and a fourth communication port; the third communication port is communicated with the third reversing liquid port; the fourth communication port is communicated with the first communication port;

and one end of the heat conducting pipeline is communicated with the exhaust port, the other end of the heat conducting pipeline is communicated with the input liquid port, and the heat conducting pipeline is used for exchanging heat with water in the first cavity.

2. An air source heat pump according to claim 1, wherein the water tank further comprises: the first cavity and the second cavity are formed by dividing an elastic diaphragm, and gas is filled in the second cavity.

3. An air source heat pump according to claim 1, wherein the heat conducting pipe is spirally wound around the water tank.

4. An air source heat pump according to claim 1, wherein the air source heat pump further comprises:

the heat preservation shell is provided with a containing cavity and an opening communicated with the containing cavity; the water tank part extends into the accommodating cavity through the opening, and the heat conducting pipeline is positioned between the water tank and the heat insulation shell.

5. An air source heat pump according to any of claims 1-4, wherein the thermally conductive line comprises: a first inlet and a first outlet;

the air source heat pump further includes: a bypass line;

the bypass line includes: the first bypass pipeline and the second bypass pipeline are communicated with the exhaust port at one end, and the first inlet at the other end of the first bypass pipeline; one end of the second bypass pipeline is communicated with the first outlet, and the other end of the second bypass pipeline is communicated with the liquid inlet.

6. An air source heat pump according to claim 5, further comprising:

and the valve is arranged on the first bypass pipeline.

7. An air source heat pump according to claim 6, wherein the valve is an electrically operated valve, the air source heat pump further comprising:

and the controller is electrically connected with the electric valve and is used for controlling the opening or closing of the electric valve.

8. An air source heat pump according to claim 5, further comprising:

the check valve is arranged on the second bypass pipeline and is used for enabling the second bypass pipeline to conduct unidirectionally from the first outlet to the input liquid port.

9. An air source heat pump according to claim 1, wherein the air source heat pump further comprises:

a water heater, the water heater comprising: a second inlet and a second outlet; the water circulation line includes: a water inlet pipeline and a water outlet pipeline;

one end of the water inlet pipeline is communicated with the second outlet, and the other end of the water inlet pipeline is communicated with the water inlet;

one end of the water outlet pipeline is communicated with the second inlet, and the other end of the water outlet pipeline is communicated with the water outlet.

10. An air source heat pump according to claim 9, wherein the air source heat pump further comprises:

the water pump is arranged on the water inlet pipeline, and the communication part of the first cavity and the water inlet pipeline is positioned between the water pump and the outdoor heat exchanger.