An air source heat pump system

Abstract

An air-source heat pump system includes a compressor, a four-way reversing valve, a throttling device, an outdoor heat exchanger, outdoor piping, a distributor, a water-side heat exchanger, a first check valve, a second check valve, and a third check valve. The outdoor piping is connected to the four-way reversing valve and the throttling device, and is also connected to the cooling ends of the top, middle, and bottom heat exchange units. The heating ends of the top, middle, and bottom heat exchange units are connected to the branch interface pipe, and the main interface pipe is connected to the outdoor piping and the throttling device. The second and third check valves are located on the outdoor piping; the liquid outlet of the second check valve is connected to the throttling device, and the outdoor piping between the bottom heat exchange unit and the second and third check valves is connected. The liquid outlet of the first check valve is connected to the main interface pipe, and its liquid inlet is connected to the piping between the second check valve and the throttling device. During heating, the system improves the heat exchange efficiency of the outdoor heat exchanger; during cooling, it improves the subcooling.

Description

Technical Field

[0001] This utility model relates to an air source heat pump system. Background Technology

[0002] The existing technology, Chinese patent 202410019696.6, discloses a heat exchange component, an air conditioner, and a control method for the air conditioner. The heat exchange component includes: a distributor with a main refrigerant inlet and a main refrigerant outlet, the distributor also having at least two liquid inlet ports and at least two liquid outlet ports, the number of liquid inlet ports being the same as the number of liquid outlet ports; a heat exchanger and at least two refrigerant flow paths, each refrigerant flow path flowing through a different part of the heat exchanger's heat exchange pipes, and each end of each refrigerant flow path being connected to one liquid inlet port and one liquid outlet port of the distributor, respectively; wherein, within the distributor, each liquid inlet port and each liquid outlet port can be selectively switched on and off to allow the heat exchanger to enter different heat exchange diversion modes. The problem is that the distributor has multiple liquid inlet and outlet ports, resulting in a complex structure and poor subcooling effect. Utility Model Content

[0003] The purpose of this invention is to provide an air source heat pump system that features a simple distributor structure and good subcooling effect.

[0004] This utility model is implemented as follows: an air source heat pump system, characterized in that it includes a compressor, a four-way reversing valve, a throttling component, an outdoor heat exchanger, outdoor piping, a distributor, a water-side heat exchanger, a first check valve, a second check valve, and a third check valve.

[0005] The outdoor heat exchanger includes a top heat exchange unit, several middle heat exchange units, and a bottom heat exchange unit, which are arranged sequentially from top to bottom.

[0006] The distributor includes a main interface pipe, a collection chamber, and several branch interface pipes located on the collection chamber;

[0007] The outdoor piping is connected to the four-way reversing valve and the throttling device. The outdoor piping is connected to the cooling end of the top heat exchanger, the middle heat exchanger, and the bottom heat exchanger respectively. The heating end of the top heat exchanger, the middle heat exchanger, and the bottom heat exchanger is connected to the branch interface pipe. The main interface pipe is connected to the outdoor piping and the throttling device. The second and third check valves are installed on the outdoor piping. The liquid outlet of the second check valve is connected to the throttling device. The outdoor piping between the bottom heat exchanger and the second and third check valves is connected. The liquid outlet of the first check valve is connected to the main interface pipe. The liquid inlet is connected to the piping between the second check valve and the throttling device.

[0008] The air source heat pump system described above is characterized in that, during cooling, the compressor, the D-E terminals of the four-way reversing valve, the outdoor piping, and the throttling component are connected.

[0009] The refrigerant in the outdoor pipeline is connected to the cooling end of the top heat exchanger and the middle heat exchanger, and the heating end of the top heat exchanger and the middle heat exchanger is connected to the distributor. The distributor, the bottom heat exchanger, the second one-way valve and the throttling component are connected in sequence.

[0010] The air source heat pump system described above is characterized in that: during heating, the refrigerant is connected to the outdoor pipeline between the water-side heat exchanger, the throttling component, the first one-way valve, the distributor, the top heat exchange unit, the middle heat exchange unit, the bottom heat exchange unit, the third one-way valve, and the four-way reversing valve; the second one-way valve is in a non-conducting state.

[0011] This utility model discloses an air source heat pump system. With this design, the heat exchange efficiency of the outdoor heat exchanger is improved when heating, and the subcooling degree is improved when cooling. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the present invention.

[0013] Figure 2 This is a schematic diagram of the cooling process of this utility model.

[0014] Figure 3 This is a schematic diagram of the heating principle of this utility model. Detailed Implementation

[0015] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0016] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0017] like Figure 1 As shown, an air source heat pump system includes a compressor 1, a four-way reversing valve 2, a throttling component 3, an outdoor heat exchanger 4, outdoor piping 5, a distributor 6, a water-side heat exchanger 7, a first check valve 81, a second check valve 82, and a third check valve 83.

[0018] The outdoor heat exchanger 4 includes a top heat exchange unit 41, several middle heat exchange units 42 and a bottom heat exchange unit 43, which are arranged sequentially from top to bottom. When cooling, the refrigerant inlet end of the outdoor heat exchanger 4 is the cooling end; when heating, the refrigerant input end of the indoor heat exchanger 4 is the heating end.

[0019] Distributor 6 includes a main interface pipe, a liquid collection chamber, and several branch interface pipes disposed on the liquid collection chamber; the main interface pipe and the liquid collection chamber are connected.

[0020] Outdoor pipe 5 is connected to four-way reversing valve 2 and throttling device 3. Outdoor pipe 5 is connected to the cooling ends of top heat exchanger 41, middle heat exchanger 42 and bottom heat exchanger 43 respectively. The heating ends of top heat exchanger 41, middle heat exchanger 42 and bottom heat exchanger 43 are connected to the branch interface pipe of distributor 6. The main interface pipe is connected to the connection end of outdoor pipe 5 and throttling device 3. Second one-way valve 82 and third one-way valve 83 are installed on outdoor pipe 5. The liquid outlet of second one-way valve 82 is connected to throttling device 3. The outdoor pipe 5 between bottom heat exchanger 43 and second one-way valve 82 and third one-way valve 83 is connected. The liquid outlet of first one-way valve 81 is connected to the main interface pipe of distributor 6, and the liquid inlet is connected to the pipe between second one-way valve 82 and throttling device 3. This ensures that the heat exchanger has a high subcooling degree during cooling and maximizes the utilization of the heat exchanger area and improves heat exchange efficiency during heating.

[0021] like Figure 2 As shown: During cooling, compressor 1, the D-E terminals of the four-way reversing valve 2, outdoor pipe 5, and throttling component 3 are connected.

[0022] The refrigerant in outdoor pipe 5 is connected to the cooling ends of the top heat exchanger 41 and the middle heat exchanger 42. The heating ends of the top heat exchanger 41 and the middle heat exchanger 42 are connected to the distributor 6. The distributor 6, the bottom heat exchanger 43, the second one-way valve 82, and the throttling component 3 are connected in sequence. This design improves the subcooling. The throttling component 3, the water-side heat exchanger, the C-D ends of the four-way reversing valve, and the compressor's return pipe are connected in sequence. The first one-way valve 81 and the third one-way valve 83 are not conductive.

[0023] like Figure 3 As shown, during heating, the refrigerant is connected via the water-side heat exchanger 7, the throttling component 3, the first one-way valve 81, the distributor 6, and the outdoor pipeline 5 connecting the top heat exchanger unit 41 and the middle heat exchanger unit 42, as well as the outdoor pipeline 5 connecting the bottom heat exchanger unit 43 with the third one-way valve 83 and the four-way reversing valve 2; the third one-way valve 83 is in the conducting state. The first one-way valve 81 and the third one-way valve 83 are in the conducting state; the second one-way valve 82 is not conducting.

[0024] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An air source heat pump system, characterized in that: Includes a compressor, a four-way reversing valve, a throttling component, an outdoor heat exchanger, outdoor piping, a distributor, a water-side heat exchanger, a first check valve, a second check valve, and a third check valve. The outdoor heat exchanger includes a top heat exchange unit, several middle heat exchange units, and a bottom heat exchange unit, which are arranged sequentially from top to bottom. The distributor includes a main interface pipe, a collection chamber, and several branch interface pipes located on the collection chamber; The outdoor piping is connected to the four-way reversing valve and the throttling device. The outdoor piping is connected to the cooling end of the top heat exchanger, the middle heat exchanger, and the bottom heat exchanger respectively. The heating end of the top heat exchanger, the middle heat exchanger, and the bottom heat exchanger is connected to the branch interface pipe. The main interface pipe is connected to the outdoor piping and the throttling device. The second and third check valves are installed on the outdoor piping. The liquid outlet of the second check valve is connected to the throttling device. The outdoor piping between the bottom heat exchanger and the second and third check valves is connected. The liquid outlet of the first check valve is connected to the main interface pipe. The liquid inlet is connected to the piping between the second check valve and the throttling device.

2. The air source heat pump system according to claim 1, characterized in that: During cooling, the compressor, the D-E terminals of the four-way reversing valve, the outdoor piping, and the throttling device are connected. The refrigerant in the outdoor pipeline is connected to the cooling end of the top heat exchanger and the middle heat exchanger, and the heating end of the top heat exchanger and the middle heat exchanger is connected to the distributor. The distributor, the bottom heat exchanger, the second one-way valve and the throttling component are connected in sequence.

3. The air source heat pump system according to claim 1, characterized in that: During heating, the refrigerant is connected to the outdoor pipeline between the water-side heat exchanger, the throttling device, the first check valve, the distributor, the top heat exchange unit, the middle heat exchange unit, the bottom heat exchange unit, the third check valve, and the four-way reversing valve; the second check valve is in a non-conducting state.

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