CN210772874U

CN210772874U - Heat pump system

Info

Publication number: CN210772874U
Application number: CN201920948411.1U
Authority: CN
Inventors: 周明杰; 张铭; 张晓迪; 高强; 王海胜; 卢大海
Original assignee: Qingdao Haier Air Conditioning Electric Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Air Conditioning Electric Co Ltd; Haier Smart Home Co Ltd
Priority date: 2019-06-21
Filing date: 2019-06-21
Publication date: 2020-06-16
Anticipated expiration: 2029-06-21

Abstract

The utility model belongs to the technical field of indirect heating equipment, specifically provide a heat pump system. The utility model discloses aim at solving current heat transfer system and be difficult to simultaneously for many places supply cold wind and hydrothermal problem. Mesh for this reason, the utility model discloses a heat pump system includes the heat transfer main road, respectively with a plurality of parallelly connected heat transfer branch roads and circulation water route of heat transfer main road intercommunication, wherein, the circulation water route includes for the radiating circulation main road of first heat exchanger on the heat transfer main road and a plurality of water supply branch roads that link to each other respectively with this circulation main road, arbitrary one or more in a plurality of water supply branch roads can communicate with the water storage device on the circulation main road. Through the arrangement, on the one hand, the cold air and hot water can be supplied through one set of heat exchange system, the system structure is simplified, and the installation and maintenance of the heat pump system are facilitated. On the other hand, cold water is heated for use by heat dissipated directly through the first heat exchanger during heat exchange, waste heat recovery of the heat pump system is achieved, and energy is saved to the great extent.

Description

Heat pump system

Technical Field

The utility model belongs to the technical field of indirect heating equipment, specifically provide a heat pump system.

Background

The heat pump hot water unit can provide domestic hot water or heating hot water for users, however, in some places, such as bathing centers, indoor hot spring centers, superstores, school bathrooms, apartment blocks and other places requiring domestic hot water for central heating, hot water and cold air may be required to be provided at the same time.

The current solutions are: the system is completed by adopting two sets of heat exchange systems, wherein one set of heat exchange system is used for providing cold air, and the other set of heat exchange system is used for providing hot water. Although the scheme can provide hot water and cold air at the same time, the two sets of heat exchange systems are troublesome to install and maintain and can cause energy waste.

Accordingly, there is a need in the art for a new heat pump system that addresses the above-mentioned problems.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems in the prior art, i.e. to solve the problem that the existing heat exchange system is difficult to supply cold air and hot water to multiple locations simultaneously, the present invention provides a heat pump system, which comprises a heat exchange main path and multiple parallel heat exchange branch paths respectively communicating with the heat exchange main path, wherein the heat exchange main path is provided with a first heat exchanger and a compressor, each heat exchange branch path is provided with a throttling device, a second heat exchanger and an air supply device, the heat pump system further comprises a circulation water path, the circulation water path comprises a circulation main path and multiple water supply branch paths respectively connected with the circulation main path, the circulation main path is provided with a valve assembly, a circulation pump and a water storage device, the valve assembly allows water to circulate in the circulation main path and enables any one or more of the multiple water supply branch paths to communicate with the water storage device, the first heat exchanger is capable of dissipating heat through water flowing in the main circulation path.

In a preferred embodiment of the heat pump system, the valve assembly includes a water outlet valve disposed on the main circulation path and a first on-off valve disposed on each of the water supply branches.

In a preferred embodiment of the heat pump system, the circulation main path is further provided with an exhaust valve.

In a preferred embodiment of the heat pump system, the circulation main line is further provided with a relief valve.

In a preferred embodiment of the heat pump system, the heat pump system further includes a water replenishing branch line connected to the main circulation path.

In a preferred technical scheme of the heat pump system, a second switch valve is arranged on the water replenishing branch road, and a water return valve is further arranged at a water return end of the circulating main road.

In a preferred embodiment of the heat pump system, the circulation main path is further provided with an expansion tank.

In a preferred technical solution of the heat pump system, the water storage device is a heat-insulating water tank.

In a preferred embodiment of the heat pump system, the first heat exchanger is any one of a shell-and-tube heat exchanger, a plate heat exchanger and a double-tube heat exchanger.

In a preferred embodiment of the heat pump system, the second heat exchanger is a fin heat exchanger.

It can be understood by those skilled in the art that the heat pump system of the present invention includes a heat exchange main path, a plurality of parallel heat exchange branch paths respectively communicated with the heat exchange main path, and a circulation water path, wherein the circulation water path includes a main circulation path for heat dissipation of the first heat exchanger on the heat exchange main path and a plurality of water supply branch paths respectively connected with the main circulation path, and any one or more of the plurality of water supply branch paths can be communicated with the water storage device on the main circulation path. Through the arrangement, on the one hand, the cold air and hot water can be supplied through one set of heat exchange system, the system structure is simplified, and the installation and maintenance of the heat pump system are facilitated. On the other hand, cold water is heated for use by heat dissipated directly through the first heat exchanger during heat exchange, waste heat recovery of the heat pump system is achieved, and energy is saved to the great extent.

Drawings

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. The attached drawings are as follows:

fig. 1 is a structural diagram of a heat pump system of the present invention.

In the drawings: 1. a heat exchange main path; 11. a first heat exchanger; 12. a compressor; 2. a heat exchange branch; 21. a second heat exchanger; 22. a throttling device; 3. a main loop path; 31. a water storage device; 32. a circulation pump; 33. a water outlet valve; 34. an exhaust valve; 35. a safety valve; 36. a water return valve; 37. an expansion tank; 4. a water supply branch; 41. a first on-off valve; 5. a water replenishing branch; 51. and a second on-off valve.

Detailed Description

It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention. And can be adjusted as needed by those skilled in the art to suit particular applications.

It should be noted that, in the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "connected" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Referring first to fig. 1, fig. 1 is a block diagram of a heat pump system according to the present invention. As shown in fig. 1, the heat pump system of the present invention includes a heat exchange main path 1 and a plurality of parallel heat exchange branches 2 respectively communicated with the heat exchange main path 1, wherein, a first heat exchanger 11 and a compressor 12 are provided on the heat exchange main path 1, and a throttling device 22, a second heat exchanger 21 and an air supply device (not shown in the figure) are provided on each heat exchange branch 2. The heat pump system further comprises a circulating water path. Specifically, the circulation water path includes a main circulation path 3 and a plurality of water supply branches 4 respectively connected to the main circulation path 3, and the first heat exchanger 11 dissipates heat by means of water flowing in the main circulation path 3. More specifically, the main circulation path 3 is provided with a valve assembly, a circulation pump 32 and a water storage device 31, wherein the water storage device 31 can store the water in the main circulation path 3, which absorbs the heat dissipated by the first heat exchanger 11. The circulation pump 32 is capable of causing the water to circulate in the main circulation path 3 so as to cause the water in the main circulation path 3 to continuously flow through the first heat exchanger 11 and absorb the heat dissipated by the first heat exchanger 11. The plurality of water supply branches 4 are respectively connected between the main circulation path 3 and a plurality of hot water supply positions so as to selectively deliver the hot water in the water storage device 31 to any one of the hot water supply positions. The valve assembly allows water to circulate within the main circulation circuit 3 and enables any one or more of the plurality of water supply branches 4 to communicate with the water storage means 31. That is, under the control of the valve assembly, the water storage device 31 can be in a closed state where water is not allowed to flow between the water storage device and any one of the water supply branches 4, and at this time, water can flow only in the main circulation path 3 so as to absorb heat emitted from the first heat exchanger 11, or the water storage device 31 can be in a circulation state where water is allowed to flow between the water storage device 31 and any one or more of the water supply branches 4, and hot water in the water storage device 31 is circulated to the outside through the water supply branches 4.

In the operation process of the heat pump system, the high-temperature and high-pressure gaseous refrigerant is discharged from the compressor 12 and enters the first heat exchanger 11 to be condensed, and the first heat exchanger 11 emits a large amount of heat and conducts the heat to the water in the main circulation path 3. The water in the main circulation path 3 is heated and then flows into the water storage device 31. The water in the main circulation path 3 circulates, so that the temperature of the water in the water storage device 31 gradually rises to the water supply temperature; the condensed liquid refrigerant is divided into a plurality of parts to flow into the heat exchange branch circuits 2 which are connected in parallel. For one heat exchange branch 2, after the liquid refrigerant is depressurized by the throttling device 22, the liquid refrigerant flows into the second heat exchanger 21 to undergo evaporation change, so that the heat of the heat medium (such as air/water) at the position of the second heat exchanger 21 is absorbed, and the temperature of the heat medium is reduced; the air supply device can transmit the cold energy in the heat medium to the temperature adjusting area corresponding to the heat exchange branch 2. When one or more hot water supply positions have water supply requirements, the water supply branch 4 corresponding to the hot water supply position is communicated with the water storage device 31 under the regulation of the valve assembly, and the hot water in the water storage device 31 is delivered to the hot water supply position.

In the above embodiment, the "one or more of the plurality of water supply branches 4 are in communication with the water storage device 31" may be that the plurality of water supply branches 4 are in direct communication with the water storage device 31, the plurality of water supply branches 4 are in indirect communication with the water storage device 31 (for example, the water supply branches 4 are communicated with the main circulation path 3, and are in indirect communication with the water storage device 31 through a pipeline of the main circulation path 3), or one part of the plurality of water supply branches 4 are in direct communication with the water storage device 31, and the other part is in indirect communication with the water storage device 31. The specific communication form of the above pipeline arrangement scheme is not limited as long as the set pipeline structure can meet the hot water delivery requirements of the plurality of water supply branches 4.

Further, the throttle device 22 is an electronic expansion valve, for example. The air supply device is a fan. The first heat exchanger 11 is any one of a shell-and-tube heat exchanger, a plate heat exchanger, and a double-tube heat exchanger. The second heat exchanger 21 is a finned heat exchanger. Obviously, the above examples are only the enumerated implementation examples of the present invention, and the specific model and structure of any one of the above devices can be adjusted according to the actual operation requirement of the heat pump system.

The technical solution of the present invention will be further explained with reference to the above embodiments.

In a particular embodiment, the above-mentioned valve assembly comprises an outlet valve 33 arranged on the main circuit 3 of the cycle and a first on-off valve 41 arranged on each branch 4 of the water supply. The outlet valve 33 can control the outlet state of the circulating water path. The first switching valve 41 enables selective communication/closure of the water supply branch 4 with the outside. For example, the first switching valve 41 may be a faucet provided on a pipe of the water supply branch 4, in which case a backflow prevention check valve may be further provided on the water supply branch 4 or the main circulation path 3, or the first switching valve 41 may be a one-way switching valve having a backflow prevention function.

In another specific embodiment, the main circulation path 3 is further provided with an exhaust valve 34. When the water in the main circulation path 3 is continuously heated, part of the gas is separated from the water. After exceeding a set amount, the gas can be discharged from the main circulation path 3 through the gas discharge valve 34, so as to avoid affecting the smoothness of water circulation in the main circulation path 3 and increasing the operating noise of the circulation water path.

In a further specific embodiment, a safety valve 35 is further disposed on the main circulation path 3, so that when the pressure of the main circulation path 3 exceeds a set value, water in the main circulation path 3 can be discharged through the safety valve 35 to reduce the pipeline pressure, thereby ensuring safe operation of the main circulation path 3 and avoiding a burst fault of the main circulation path 3.

Further, the utility model discloses a heat pump system still includes the moisturizing branch road 5 that links to each other with circulation main road 3. The water replenishing branch 5 is connected between the main circulation path 3 and a water source and is used for replenishing water into the main circulation path 3. In practical applications, the water replenishing branch 5 may be connected to the water storage device 31 or to a pipeline of the main circulation path 3 so as to replenish the reduced amount of water in the main circulation path 3 after the water supplying branch 4 supplies hot water.

Furthermore, a second switch valve 51 is arranged on the water replenishing branch 5, and a water return valve 36 is arranged at the water return end of the main circulation path 3. Wherein the second switching valve 51 enables selective communication/closure of the water source with the main circulation path 3, and the return valve 36 enables adjustment of the pressure difference between the inflow water and the return water. As an example, the second switch valve 51 may be a faucet provided on a pipeline of the water replenishing branch 5, in which case a backflow prevention check valve may be further provided between the water replenishing branch 5 and the circulation main circuit 3, or the second switch valve 51 may be a one-way switch valve provided on the water replenishing branch 5 and having a backflow prevention function.

In a specific embodiment, the water storage device 31 is a heat preservation water tank, so as to avoid heat loss when hot water flows into and is contained in the water storage device 31. Preferably, an expansion water tank 37 is further arranged on the main circulation path 3, and the expansion water tank 37 is arranged on the return water side of the circulation pump 32 (i.e. the water inlet section of the circulation pump 32) so as to accommodate and compensate the expansion and contraction amount of water in the main circulation path 3.

In a most preferred embodiment, the circulation main path 3 of the heat pump system of the present invention is provided with an exhaust valve 34, a safety valve 35, a return valve 36, a water outlet valve 33, and an expansion tank 37. And the main circulation path 3 is also connected with the water replenishing branch path 5.

To sum up, the utility model discloses a heat pump system has realized the organic combination in refrigerant heat transfer system and circulation water route for heat pump system after optimizing can provide cold wind and/or hot water for a plurality of positions simultaneously, has both simplified heat pump system's structural component, has reduced heat pump system's installation cost and maintenance cost, has realized heat pump system's waste heat recovery again, heats cold water through the heat transfer effect of heat exchanger, has practiced thrift the energy to a great extent.

So far, the technical solution of the present invention has been described with reference to the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, a person skilled in the art can make equivalent changes or substitutions to the related technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A heat pump system is characterized in that the heat pump system comprises a heat exchange main path and a plurality of parallel heat exchange branch paths respectively communicated with the heat exchange main path, wherein a first heat exchanger and a compressor are arranged on the heat exchange main path, a throttling device, a second heat exchanger and an air supply device are arranged on each heat exchange branch path,

the heat pump system further comprises a circulating water path, the circulating water path comprises a main circulating path and a plurality of water supply branches respectively connected with the main circulating path, a valve assembly, a circulating pump and a water storage device are arranged on the main circulating path, the valve assembly allows water to circularly flow in the main circulating path and enables any one or more of the plurality of water supply branches to be communicated with the water storage device, and the first heat exchanger can dissipate heat through water flowing in the main circulating path.

2. The heat pump system according to claim 1, wherein said valve assembly comprises a water outlet valve provided on said main circuit of the cycle and a first on-off valve provided on each of said water supply branches.

3. The heat pump system of claim 1, wherein a vent valve is further disposed on the main circulation path.

4. The heat pump system of claim 1, wherein a relief valve is further provided on the circulation main path.

5. The heat pump system of claim 1, further comprising a water replenishment branch connected to the main circuit of the cycle.

6. The heat pump system according to claim 5, wherein a second switch valve is provided on the water supplement branch, and a water return valve is further provided at a water return end of the main circulation path.

7. The heat pump system of claim 1, wherein an expansion tank is further provided on the circulation main path.

8. The heat pump system of claim 1, wherein the water storage device is a thermal water tank.

9. The heat pump system according to any one of claims 1 to 8, wherein the first heat exchanger is any one of a shell-and-tube heat exchanger, a plate heat exchanger, and a double-tube heat exchanger.

10. The heat pump system of any one of claims 1 to 8, wherein the second heat exchanger is a finned heat exchanger.