Air source heating unit with energy storage buffer water tank

Abstract

The utility model relates to an air source heating unit with an energy storage buffer water tank. The air source heating unit comprises a four-way valve, a gas-liquid separator, a compressor, a heat exchanger, an evaporator, an intermediate heat exchanger, a first electronic expansion valve, a first water pump, a second water pump, the energy storage buffer water tank, a heat pump shell and a water tank mounting seat. The air source heating system has the advantages that the structure is compact, the air source heating unit and the energy storage buffer water tank are assembled after being transported to an air conditioner position, the assembly is simple and fast, the capacity of the energy storage buffer water tank can be flexibly adjusted according to the position size of an installation occasion, and the installation is convenient.

Description

Technical Field

[0001] This utility model relates to an air source heating unit with an energy storage buffer water tank. Background Technology

[0002] Currently, air source heating units are widely used in rural markets in China. However, their adoption in high-rise buildings and urban apartments is hampered by limited installation space. Furthermore, current air source heat pump heating systems require additional auxiliary equipment besides the heat pump unit, such as buffer tanks and water pumps. Installing these auxiliary devices in the compact space of an air conditioner's outdoor unit in a residential building is clearly difficult, and the work involved in connecting water pipes at heights further complicates the installation process. Summary of the Invention

[0003] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide an air source heating unit with an energy storage buffer water tank. It has a compact structure and consists of an air source heating unit and an energy storage buffer water tank. The two are transported to the air conditioning unit location and then assembled, which is simple and quick. Moreover, the capacity of the energy storage buffer water tank can be flexibly adjusted according to the size of the installation site, making installation convenient.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows: it is an air source heating unit with an energy storage buffer water tank and a linkage control method, characterized by further comprising:

[0005] The system comprises a four-way valve, a gas-liquid separator, a compressor, and a heat exchanger; the compressor has two refrigerant inlets and one refrigerant outlet; the four-way valve has ports a, b, c, and d; the heat exchanger has a refrigerant flow channel and a liquid flow channel; port a of the four-way valve is connected to the inlet of the refrigerant flow channel; port b of the four-way valve is connected to the inlet of the gas-liquid separator; port c of the four-way valve is connected to the refrigerant outlet of the evaporator; port d of the four-way valve is connected to the refrigerant outlet of the compressor; and the refrigerant outlet of the gas-liquid separator is connected to one refrigerant inlet of the compressor.

[0006] An evaporator, an intermediate heat exchanger, and a first electronic expansion valve; the intermediate heat exchanger has a first heat exchange channel and a second heat exchange channel; the refrigerant outlet of the evaporator is connected to port C of a four-way valve; the refrigerant inlet of the evaporator is connected to the outlet of the second heat exchange channel; the inlet of the second heat exchange channel is connected to the outlet of the refrigerant channel; the outlet of the first heat exchange channel is connected to another refrigerant inlet of the compressor; the inlet of the first heat exchange channel is connected to the outlet of the refrigerant channel through the first electronic expansion valve; and

[0007] The system comprises a first water pump, a second water pump, and an energy storage buffer tank. The energy storage buffer tank has an a port, a b port, a c port, and a d port. The a port of the energy storage buffer tank is connected to an external water outlet. The b port of the energy storage buffer tank is connected to an external water inlet through the second water pump. The c port of the energy storage buffer tank is connected to the inlet of the liquid flow channel. The d port of the energy storage buffer tank is connected to the outlet of the liquid flow channel through the first water pump.

[0008] The heat pump housing and water tank mounting base are provided. The four-way valve, gas-liquid separator, compressor and heat exchanger, evaporator, intermediate heat exchanger and first electronic expansion valve are all installed in the heat pump housing. The water tank mounting base is installed on the heat pump housing. The first water pump, the second water pump and the energy storage buffer water tank are installed in the water tank mounting base.

[0009] The technology also includes a second electronic expansion valve and a filter; the outlet of the second heat exchange channel is connected to the refrigerant inlet of the evaporator after passing through the filter and the second electronic expansion valve in sequence.

[0010] The advantages of this utility model compared with the prior art are: compact structure, consisting of an air source heating unit and an energy storage buffer water tank, which are transported to the air conditioning unit location for assembly, which is simple and quick, and the capacity of the energy storage buffer water tank can be flexibly adjusted according to the size of the installation site, making installation convenient. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the refrigerant and water flow path of this utility model;

[0012] Figure 2 This is a structural schematic diagram of the heat pump housing and water tank mounting base of this utility model. Detailed Implementation

[0013] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0014] like Figure 1 and Figure 2 As shown,

[0015] It is an air source heating unit with an energy storage buffer water tank, including:

[0016] The system comprises a four-way valve 1, a gas-liquid separator 2, a compressor 4, and a heat exchanger 9; the compressor 4 has two refrigerant inlets and one refrigerant outlet; the four-way valve 1 has ports a, b, c, and d; the heat exchanger 9 has a refrigerant flow channel 91 and a liquid flow channel 92; port a of the four-way valve 1 is connected to the inlet of the refrigerant flow channel 91; port b of the four-way valve 1 is connected to the inlet of the gas-liquid separator 2; port c of the four-way valve 1 is connected to the refrigerant outlet of the evaporator 3; port d of the four-way valve 1 is connected to the refrigerant outlet of the compressor 4; and the refrigerant outlet of the gas-liquid separator 2 is connected to one refrigerant inlet of the compressor 4.

[0017] The system comprises an evaporator 3, an intermediate heat exchanger 7, and a first electronic expansion valve 8; the intermediate heat exchanger has a first heat exchange channel 71 and a second heat exchange channel 72; the refrigerant outlet of the evaporator 3 is connected to port c of the four-way valve 1; the refrigerant inlet of the evaporator 3 is connected to the outlet of the second heat exchange channel 72; the inlet of the second heat exchange channel 72 is connected to the outlet of the refrigerant channel 91; the outlet of the first heat exchange channel 71 is connected to another refrigerant inlet of the compressor 4; and the inlet of the first heat exchange channel 71 is connected to the outlet of the refrigerant channel 91 via the first electronic expansion valve 8; and

[0018] A first water pump 11, a second water pump 12, and an energy storage buffer tank 13; the energy storage buffer tank 13 has an a port, a b port, a c port, and a d port. The a port of the energy storage buffer tank 13 is connected to an external water outlet. The b port of the energy storage buffer tank 13 is connected to an external water inlet through the second water pump 12. The c port of the energy storage buffer tank 13 is connected to the water inlet of the liquid flow channel 92. The d port of the energy storage buffer tank 13 is connected to the water outlet of the liquid flow channel 92 through the first water pump 11.

[0019] The heat pump housing 15 and the water tank mounting base 14 are installed in the heat pump housing 15. The four-way valve 1, gas-liquid separator 2, compressor 4, heat exchanger 9, evaporator 3, intermediate heat exchanger 7, and first electronic expansion valve 8 are all installed in the heat pump housing 15. The water tank mounting base 14 is installed on the heat pump housing 15. The first water pump 11, the second water pump 12, and the energy storage buffer water tank 13 are installed in the water tank mounting base 14.

[0020] During operation, the refrigerant at compressor 4 passes sequentially through port d of four-way valve 1, port a of four-way valve 1, and refrigerant channel 91 of the heat exchanger, then splits into two paths connecting to the first electronic expansion valve 8 and the second heat exchange channel 72 respectively. The refrigerant at the first electronic expansion valve 8 returns to compressor 4 through the first heat exchange channel 71, while the refrigerant in the second heat exchange channel 72 passes sequentially through evaporator 3, port c of four-way valve 1, port b of four-way valve 1, and gas-liquid separator 2 before returning to compressor 4. The water in energy storage buffer tank 6 exchanges heat with the refrigerant in refrigerant channel 91 through liquid channel 92 of the heat exchanger, thereby raising the water temperature in energy storage buffer tank 6. The intermediate heat exchanger 7 is a refrigeration component that recovers heat at low temperatures to supplement the intake gas of compressor 4, thereby increasing the heating capacity and COP at low temperatures; this is a conventional technology.

[0021] In this embodiment, a second electronic expansion valve 5 and a filter 6 are included; the outlet of the second heat exchange channel 72 is connected to the refrigerant inlet of the evaporator 3 after passing through the filter 6 and the second electronic expansion valve 5 in sequence.

[0022] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations of these embodiments without departing from the principles and spirit of this utility model still fall within the protection scope of this utility model.

Claims

1. An air source heating unit with an energy storage buffer tank, characterized in that Also include: Four-way valve (1), gas-liquid separator (2), compressor (4) and heat exchanger (9); the compressor (4) has two refrigerant inlet and a refrigerant outlet, the four-way valve (1) has a mouth, b mouth, c mouth and d mouth, the heat exchanger (9) has refrigerant flow channel (91) and liquid flow channel (92), four-way valve (1) a mouth and refrigerant flow channel (91) inlet communication, four-way valve (1) b mouth and gas-liquid separator (2) inlet communication, four-way valve (1) c mouth and evaporator (3) refrigerant outlet communication, four-way valve (1) d mouth and compressor (4) refrigerant outlet communication, the gas-liquid separator (2) refrigerant outlet and one refrigerant inlet of compressor (4) communication; Evaporator (3), intermediate heat exchanger (7) and first electronic expansion valve (8); the intermediate heat exchanger has first heat exchange flow channel (71) and second heat exchange flow channel (72), the evaporator (3) refrigerant outlet and four-way valve (1) c mouth communication, evaporator (3) refrigerant inlet and second heat exchange flow channel (72) outlet communication, second heat exchange flow channel (72) inlet and refrigerant flow channel (91) outlet communication, first heat exchange flow channel (71) outlet and another refrigerant inlet of compressor (4) communication, first heat exchange flow channel (71) inlet and refrigerant flow channel (91) outlet communication through first electronic expansion valve (8); and First water pump (11), second water pump (12) and energy storage buffer water tank (13); the energy storage buffer water tank (13) has a mouth, b mouth, c mouth and d mouth, the energy storage buffer water tank (13) a mouth and outside water outlet communication, energy storage buffer water tank (13) b mouth and outside water inlet communication through second water pump (12), energy storage buffer water tank (13) c mouth and liquid flow channel (92) water inlet communication, energy storage buffer water tank (13) d mouth and liquid flow channel (92) water outlet communication through first water pump (11); Heat pump shell (15) and water tank mounting seat (14); the four-way valve (1), gas-liquid separator (2), compressor (4) and heat exchanger (9), evaporator (3), intermediate heat exchanger (7), first electronic expansion valve (8) are installed in heat pump shell (15), the water tank mounting seat (14) is installed on heat pump shell (15), the first water pump (11), second water pump (12) and energy storage buffer water tank (13) are installed in water tank mounting seat (14).

2. An air source heating unit with a water tank for energy storage according to claim 1, characterized in that Including second electronic expansion valve (5) and filter (6); the second heat exchange flow channel (72) outlet is communicated with the refrigerant inlet of evaporator (3) through filter (6) and second electronic expansion valve (5) in turn.

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