Double-source triple co-generation unit

Abstract

A double-source triple co-generation unit comprises an outdoor heat exchanger, a hot water side heat exchanger, a dry evaporator, a compressor, an oil separator, a vapor-liquid separator, a plate heat exchanger and a two-way liquid storage barrel which are connected through pipelines to form a single refrigeration mode, a single hot water mode, a single heating mode, a water source heat pump mode and a hot water priority mode. The air conditioner has five modes including a single refrigeration mode, a single hot water mode, a single heating mode, a water source heat pump mode and a hot water priority mode, the needed modes can be intelligently adjusted according to the external environment, and the requirements of different periods are met.

Description

Technical Field

[0001] The utility model relates to the technical field of heat pump hot water production, in particular to a dual-source triple-supply unit. Background Art

[0002] The combined heat and power (CHP) system, usually refers to a heat pump unit that can provide air conditioning, floor heating and hot water.

[0003] From wood to coal, coal to natural gas, and natural gas to today's new energy, with the increasing awareness of environmental protection and energy conservation among people, the combined heat and power system, as an energy-efficient heating method, has been gradually widely used, a centralized heating method that can meet the needs of heating, cooling and hot water supply simultaneously through the heat energy and water generated by air.

[0004] Compared with the relatively warm south, the winter in the north is generally below zero. In harsh conditions, some traditional air-source heat pump tri-function machines often cannot meet the needs.

[0005] In summary, the applicant makes further improvements. Content of the Utility Model

[0006] Aiming at the deficiencies in the prior art, the utility model provides a dual-source triple-supply unit.

[0007] To solve the above technical problems, the utility model is solved by the following technical solutions:

[0008] A dual-source triple-supply unit, the unit includes an outdoor heat exchanger, a hot water side heat exchanger, a dry evaporator, a compressor, an oil separator, a gas-liquid separator, a plate heat exchanger, and a two-way liquid storage barrel. The above components are connected by pipelines to form a single refrigeration mode, a single hot water mode, a single heating mode, a water source heat pump mode, and a hot water priority mode;

[0009] Among them, the pipeline connection method of the single refrigeration mode is as follows:

[0010] The first port of the outdoor heat exchanger is connected to the two-way liquid storage barrel, the two-way liquid storage barrel is connected to the first port of the dry evaporator, the second port of the dry evaporator is connected to the gas-liquid separator, the gas-liquid separator is connected to the inlet of the compressor, the outlet of the compressor is connected to the oil separator, and the oil separator is connected to the second port of the outdoor heat exchanger;

[0011] The pipeline connection method of the single hot water production mode is as follows:

[0012] The second port of the outdoor heat exchanger is connected to the vapor-liquid separator, the vapor-liquid separator is connected to the inlet of the compressor, the outlet of the compressor is connected to the oil separator, the oil separator is connected to the inlet end of the hot water side heat exchanger, the outlet end of the hot water side heat exchanger is connected to the two-way liquid storage barrel, the two-way liquid storage barrel is connected to the first port of the plate heat exchanger, and the second port of the plate heat exchanger is connected to the first port of the outdoor heat exchanger;

[0013] The pipeline connection of the single heating mode is as follows:

[0014] The second port of the outdoor heat exchanger is connected to the vapor-liquid separator, the vapor-liquid separator is connected to the inlet of the compressor, the outlet of the compressor is connected to the oil separator, the oil separator is connected to the second port of the dry evaporator, the first port of the dry evaporator is connected to the two-way liquid storage barrel, the two-way liquid storage barrel is connected to the first port of the plate heat exchanger, and the first port of the plate heat exchanger is connected to the first port of the outdoor heat exchanger;

[0015] The pipeline connection of the water source heat pump mode is as follows:

[0016] The two-way liquid storage barrel is connected to the first port of the dry evaporator, the second port of the dry evaporator is connected to the vapor-liquid separator, the vapor-liquid separator is connected to the inlet of the compressor, the outlet of the compressor is connected to the oil separator, the oil separator is connected to the inlet end of the hot water side heat exchanger, and the outlet end of the hot water side heat exchanger is connected to the two-way liquid storage barrel;

[0017] The pipeline connection mode of the hot water priority mode is as follows:

[0018] The second port of the outdoor heat exchanger is connected to the vapor-liquid separator, the vapor-liquid separator is connected to the inlet of the compressor, the outlet of the compressor is connected to the oil separator, the oil separator is connected to the inlet end of the hot water side heat exchanger, the outlet end of the hot water side heat exchanger is connected to the two-way liquid storage barrel, the two-way liquid storage barrel is connected to the first port of the plate heat exchanger, and the second port of the plate heat exchanger is connected to the first port of the outdoor heat exchanger.

[0019] In the above technical solution, preferably, the pipeline connection mode of the single cooling mode further includes a second solenoid valve, a refrigeration expansion valve and a two-way filter. The second solenoid valve and the refrigeration expansion valve are located between the vapor-liquid separator and the dry evaporator, and the two-way filter is close to the two-way liquid storage barrel.

[0020] In the above technical solution, preferably, the pipeline connection mode of the single refrigeration mode further includes a first solenoid valve, and the first solenoid valve is located between the plate heat exchanger and the two-way filter.

[0021] In the above technical solution, preferably, the pipeline connection modes of the single heating mode, the single hot water mode, and the hot water priority mode further include a first electronic expansion valve and a bypass solenoid valve or a high ambient temperature solenoid valve, and the first electronic expansion valve and the bypass solenoid valve or the high ambient temperature solenoid valve are located between the second port of the plate heat exchanger and the first port of the outdoor heat exchanger.

[0022] In the above technical solution, preferably, the pipeline connection mode of the unit in any pipeline connection mode includes a three-way valve and a four-way valve. The three-way valve is located between the access end of the hot water side heat exchanger and the oil separator, and the four-way valve is located on the pipeline extended from the second port of the outdoor heat exchanger.

[0023] In the above technical solution, preferably, the gas-liquid separator is provided with a heat regeneration device.

[0024] The beneficial effects of the present utility model are as follows: The present utility model has five modes, namely single refrigeration mode, single hot water mode, single heating mode, water source heat pump mode (hot water + refrigeration), and hot water priority mode (hot water + heating), and can intelligently adjust the required mode according to the external environment to meet the needs in different periods. Description of the Drawings

[0025] Figure 1 It is a schematic structural diagram of the present utility model.

[0026] Figure 2 It is a schematic structural diagram of the main cooling path of the present utility model.

[0027] Figure 3 It is a schematic structural diagram of the main hot water path of the present utility model.

[0028] Figure 4 It is a schematic structural diagram of the main heating path of the present utility model.

[0029] Figure 5 It is a schematic structural diagram of the main cooling path for producing hot water of the present utility model.

[0030] Figure 6 It is a schematic structural diagram of the main heating path for producing hot water of the present utility model.

[0031] Among them, 1 is an outdoor heat exchanger, 18 is the first port of the outdoor heat exchanger, 19 is the second port of the outdoor heat exchanger, 2 is a four-way valve, 3 is a three-way valve, 4 is a heat exchanger on the hot water side, 41 is the hot water inlet, 42 is the hot water outlet, 43 is the output end of the heat exchanger on the hot water side, 44 is the access end of the heat exchanger on the hot water side, 5 is an oil separator, 6 is a compressor, 61 is the inlet of the compressor, 62 is the outlet of the compressor, 7 is a dry evaporator, 71 is the chilled water outlet, 72 is the chilled water inlet, 73 is the first port of the dry evaporator, 74 is the second port of the dry evaporator, 8 is a refrigeration expansion valve, 9 is a first solenoid valve, 10 is a second solenoid valve, 11 is a vapor-liquid separator, 12 is a two-way liquid storage barrel, 13 is a two-way filter, 14 is a plate heat exchanger, 15 is a first electronic expansion valve, 16 is a second electronic expansion valve, 17 is a high ambient temperature solenoid valve / bypass solenoid valve, 20 is the first port of the plate heat exchanger, and 21 is the second port of the plate heat exchanger. Detailed implementation mode

[0032] The present utility model will be further described in detail below in conjunction with the accompanying drawings and the specific implementation mode:

[0033] As Figures 1-6 shown, a dual-source triple-supply unit, the unit is connected through pipelines to form a single refrigeration mode, a single hot water mode, a single heating mode, a water source heat pump mode, and a hot water priority mode.

[0034] Further, the second port 19 of the outdoor heat exchanger is connected to the first port of the four-way valve 2 through the first pipeline, the second port of the four-way valve 2 is connected to the first port of the three-way valve 3 through the second pipeline, the third port is connected to the second port 74 of the dry evaporator through the third pipeline, and the fourth port is connected to the vapor-liquid separator 11 through the fourth pipeline.

[0035] The first port 73 of the dry evaporator is connected to the vapor-liquid separator 11 through the fifth pipeline. A second solenoid valve 10 and a refrigeration expansion valve 8 are also connected to the fifth pipeline. The second solenoid valve 10 is close to the vapor-liquid separator 11, and the refrigeration expansion valve 8 is close to the dry evaporator 7.

[0036] The vapor-liquid separator 11 is connected to the two-way liquid storage barrel 12 through the sixth pipeline, the two-way liquid storage barrel 12 is connected to the two-way filter 13 through the seventh pipeline, and the two-way filter 13 is connected to the first solenoid valve 9 through the eighth pipeline.

[0037] The two-way filter 13 can also be connected to the first port 18 of the outdoor heat exchanger through the ninth pipeline and the tenth pipeline connected in sequence.

[0038] The first solenoid valve 9 is connected to the first port 20 of the plate heat exchanger through the eleventh pipeline. The second port 21 of the plate heat exchanger is connected to the tenth pipeline and the first port 18 of the outdoor heat exchanger through the twelfth pipeline.

[0039] A first electronic expansion valve 15 is provided on the twelfth pipeline path, and a thirteenth pipeline is provided in parallel. The thirteenth pipeline is connected with a bypass solenoid valve 17 or a high ambient temperature solenoid valve 17 according to different selected modes.

[0040] The two-way liquid storage barrel 12 can also be connected to the output end 73 of the hot water side heat exchanger through a fourteenth pipeline. The access end 74 of the hot water side heat exchanger is connected to the third port of the three-way valve 3 through a fifteenth pipeline, and the second port of the three-way valve 3 is connected to the oil separator 5 through a sixteenth pipeline.

[0041] The oil separator 5 is connected to the compressor outlet 62 through a seventeenth pipeline, and the compressor inlet 61 is connected to the gas-liquid separator 11 through an eighteenth pipeline.

[0042] In this embodiment, the pipeline connection in the refrigeration mode is as follows:

[0043] The first port 18 of the outdoor heat exchanger enters the eighth pipeline through the tenth pipeline and the ninth pipeline. The first solenoid valve 9 controls the air flow to the two-way filter 13. The filtered air enters the two-way liquid storage barrel 12 through the seventh pipeline to attach the refrigerant. The refrigerant gas sequentially passes through the sixth pipeline and the fifth pipeline to the dry evaporator 7 and evaporates into a low-temperature and low-pressure refrigerant gas.

[0044] The low-temperature and low-pressure refrigerant gas enters the gas-liquid separator 11 through the third pipeline and the fourth pipeline and is separated into a pure gaseous refrigerant gas.

[0045] The pure gaseous refrigerant gas enters the compressor 6 through the eighteenth pipeline and is compressed into a high-temperature and high-pressure refrigerant gas.

[0046] The high-temperature and high-pressure refrigerant gas enters the oil separator 5 through the seventeenth pipeline to separate the refrigeration oil.

[0047] The high-temperature and high-pressure refrigerant gas from which the refrigeration oil has been separated enters the second port 19 of the outdoor heat exchanger through the sixteenth pipeline, the second pipeline, and the first pipeline to exchange heat with the outside air for refrigeration cycle.

[0048] In this embodiment, the pipeline connection mode in the single hot water mode is as follows:

[0049] The second port 19 of the outdoor heat exchanger is connected to the first port of the four-way valve 2 through the first pipeline and is connected to the gas-liquid separator 11 through its fourth pipeline.

[0050] The pure gaseous gas is connected to the compressor inlet 61 through the eighteenth pipeline and is compressed into a high-temperature and high-pressure gas by the compressor 6 and then passes through the seventeenth pipeline and the sixteenth pipeline to the three-way valve 3.

[0051] The high-temperature and high-pressure gas enters the fifteenth pipeline through the third port of the three-way valve 3 and is connected to the access end 74 of the hot water side heat exchanger. Among them, the hot water side heat exchanger is provided with a water circulation with a hot water inlet 41 and a hot water outlet 42.

[0052] The high-temperature and high-pressure gas exchanges heat with the water circulation of the hot water side heat exchanger 4, enters the two-way liquid storage barrel 12 through the fourteenth pipeline, and sequentially passes through the seventh pipeline, the eighth pipeline, and the eleventh pipeline to connect to the first port 20 of the plate heat exchanger.

[0053] The second port 21 of the plate heat exchanger converges to the tenth pipeline through the twelfth pipeline and / or the thirteenth pipeline and is connected to the first port 18 of the outdoor heat exchanger to circulate with the outside air.

[0054] In this embodiment, the pipeline connection in the single heating mode is as follows:

[0055] The second port 19 of the outdoor heat exchanger is connected through the first port of the four-way valve 2 of the first pipeline, and is connected to the gas-liquid separator 11 through the fourth pipeline.

[0056] The pure gaseous gas is connected to the compressor inlet 61 through the eighteenth pipeline, and is compressed into a high-temperature and high-pressure gas by the compressor 6 and then passes through the seventeenth pipeline and the sixteenth pipeline to the three-way valve 3.

[0057] The high-temperature and high-pressure gas enters the second pipeline through the first port of the three-way valve 3, and enters the second port 74 of the dry evaporator through the third pipeline at the third port of the four-way valve 2.

[0058] Among them, the dry evaporator 7 is provided with a chilled water circulation with a chilled water inlet 71 and a chilled water outlet 72.

[0059] After the high-temperature and high-pressure gas exchanges heat with the chilled water circulation of the dry evaporator 7, it sequentially passes through the fifth pipeline, the sixth pipeline, and the seventh pipeline to the two-way filter 13.

[0060] The first solenoid valve 9 connected to the eighth pipeline controls the gas flow direction to prevent the gas from entering the ninth pipeline, and the gas is connected to the first port 20 of the plate heat exchanger through the eighth pipeline.

[0061] The second port 21 of the plate heat exchanger converges to the tenth pipeline through the twelfth pipeline and / or the thirteenth pipeline and is connected to the first port 18 of the outdoor heat exchanger to circulate with the outside air.

[0062] In this embodiment, the pipeline connection in the water source heat pump mode is as follows:

[0063] The refrigerant liquid in the two-way liquid storage barrel 12 is connected to the first port 73 of the dry evaporator through the sixth pipeline and the fifth pipeline, and the refrigerant liquid evaporates into a refrigerant gas in the dry evaporator 7.

[0064] The second port 74 of the dry evaporator enters the third port of the four-way valve 2 through the third pipeline, and the refrigerant gas is sent from the fourth port of the four-way valve 2 to the gas-liquid separator 11 through the fourth pipeline and separated into pure gaseous refrigerant gas.

[0065] The pure gaseous refrigerant gas is connected to the compressor inlet 61 through the eighteenth pipeline, compressed into high-temperature and high-pressure refrigerant gas, and then sent to the second port of the three-way valve 3 through the seventeenth pipeline and the sixteenth pipeline. The third port of the three-way valve 3 is connected to the hot water side heat exchanger access end 44 through the fifteenth pipeline. After heat exchange, the hot water side heat exchanger output end 43 is connected to the two-way liquid storage barrel 12 through the fourteenth pipeline for circulation.

[0066] In this embodiment, the pipeline connection mode of the hot water priority mode is as follows:

[0067] The second port 19 of the outdoor heat exchanger is connected to the first port of the four-way valve 2 through the first pipeline and is connected to the gas-liquid separator 11 through the fourth pipeline.

[0068] The pure gaseous gas is connected to the compressor inlet 61 through the eighteenth pipeline, compressed by the compressor 6 into high-temperature and high-pressure gas, and then passes through the seventeenth pipeline and the sixteenth pipeline to the three-way valve 3 in sequence.

[0069] The high-temperature and high-pressure gas enters the fifteenth pipeline through the third port of the three-way valve 3 and is connected to the hot water side heat exchanger access end 74. Among them, the hot water side heat exchanger is provided with a water circulation of a hot water inlet 41 and a hot water outlet 42.

[0070] The high-temperature and high-pressure gas exchanges heat with the water circulation of the hot water side heat exchanger 4, enters the two-way liquid storage barrel 12 through the fourteenth pipeline, and then passes through the seventh pipeline, the eighth pipeline, and the eleventh pipeline to connect to the first port 20 of the plate heat exchanger in sequence.

[0071] The second port 21 of the plate heat exchanger converges to the tenth pipeline through the twelfth pipeline and / or the thirteenth pipeline and is connected to the first port 18 of the outdoor heat exchanger to circulate with the outside air.

[0072] The utility model has five modes: single refrigeration mode, single hot water mode, single heating mode, water source heat pump mode, and hot water priority mode, and can intelligently adjust the required mode according to the external environment to meet the needs in different periods.

[0073] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A dual-source triple-supply unit, characterized in that: The unit includes an outdoor heat exchanger, a hot water side heat exchanger, a dry evaporator, a compressor, an oil separator, a gas-liquid separator, a plate heat exchanger, and a two-way liquid storage tank. The above components are connected by pipelines to form a single refrigeration mode, a single hot water mode, a single heating mode, a water source heat pump mode, and a hot water priority mode; Among them, the pipeline connection method of the single refrigeration mode is as follows: The first port of the outdoor heat exchanger is connected to the two-way liquid storage tank, the two-way liquid storage tank is connected to the first port of the dry evaporator, the second port of the dry evaporator is connected to the gas-liquid separator, the gas-liquid separator is connected to the inlet of the compressor, the outlet of the compressor is connected to the oil separator, and the oil separator is connected to the second port of the outdoor heat exchanger; The pipeline connection method of the single hot water mode is as follows: The second port of the outdoor heat exchanger is connected to the gas-liquid separator, the gas-liquid separator is connected to the inlet of the compressor, the outlet of the compressor is connected to the oil separator, the oil separator is connected to the access end of the hot water side heat exchanger, the outlet of the hot water side heat exchanger is connected to the two-way liquid storage tank, the two-way liquid storage tank is connected to the first port of the plate heat exchanger, and the second port of the plate heat exchanger is connected to the first port of the outdoor heat exchanger; The pipeline connection of the single heating mode is as follows: The second port of the outdoor heat exchanger is connected to the gas-liquid separator, the gas-liquid separator is connected to the inlet of the compressor, the outlet of the compressor is connected to the oil separator, the oil separator is connected to the second port of the dry evaporator, the first port of the dry evaporator is connected to the two-way liquid storage tank, the two-way liquid storage tank is connected to the first port of the plate heat exchanger, and the first port of the plate heat exchanger is connected to the first port of the outdoor heat exchanger; The pipeline connection of the water source heat pump mode is as follows: The two-way liquid storage tank is connected to the first port of the dry evaporator, the second port of the dry evaporator is connected to the gas-liquid separator, the gas-liquid separator is connected to the inlet of the compressor, the outlet of the compressor is connected to the oil separator, the oil separator is connected to the access end of the hot water side heat exchanger, and the outlet of the hot water side heat exchanger is connected to the two-way liquid storage tank; The pipeline connection method of the hot water priority mode is as follows: The second port of the outdoor heat exchanger is connected to the gas-liquid separator, the gas-liquid separator is connected to the inlet of the compressor, the outlet of the compressor is connected to the oil separator, the oil separator is connected to the access end of the hot water side heat exchanger, the outlet of the hot water side heat exchanger is connected to the two-way liquid storage tank, the two-way liquid storage tank is connected to the first port of the plate heat exchanger, and the second port of the plate heat exchanger is connected to the first port of the outdoor heat exchanger.

2. The dual-source triple-supply unit according to claim 1, characterized in that: The pipeline connection mode of the single refrigeration mode further includes a second solenoid valve, a refrigeration expansion valve, and a two-way filter. The second solenoid valve and the refrigeration expansion valve are located between the gas-liquid separator and the dry evaporator, and the two-way filter is close to the two-way liquid storage barrel.

3. The dual-source triple-supply unit according to claim 2, characterized in that: The pipeline connection mode of the single refrigeration mode further includes a first solenoid valve, and the first solenoid valve is located between the plate heat exchanger and the two-way filter.

4. A dual-source triple-supply unit according to claim 1, characterized in that: The pipeline connection modes of the single heating mode, the single hot water mode, and the hot water priority mode further include a first electronic expansion valve and a bypass solenoid valve or a high ambient temperature solenoid valve. The first electronic expansion valve and the bypass solenoid valve or the high ambient temperature solenoid valve are located between the second port of the plate heat exchanger and the first port of the outdoor heat exchanger.

5. A dual-source triple-supply unit according to claim 1, characterized in that: The pipeline connection mode of the unit in any pipeline connection mode includes a three-way valve and a four-way valve. The three-way valve is located between the access end of the hot water side heat exchanger and the oil separator, and the four-way valve is located on the pipeline extended from the second port of the outdoor heat exchanger.

6. A dual-source triple-supply unit according to claim 1, characterized in that: The gas-liquid separator is provided with a heat regeneration device.

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