Novel multi-energy-source coupled heat pump air conditioning system
By designing a multi-energy source coupled structure in the heat pump and air conditioning system, and using multiple heat exchangers and valves and other components, the problems of low refrigeration performance, high energy consumption and frost in the air-cooled heat pump air conditioning system are solved, and efficient refrigeration and heating effects are achieved.
Patent Information
- Application Number
- CN202421393775.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-18
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-06-18
AI Technical Summary
The existing air-cooled and heat pump air conditioning systems have problems such as low refrigeration performance, high operating energy consumption, and easy frost during heating, and it is difficult to effectively utilize a variety of energy sources.
A multi-energy source coupled heat pump air conditioning system is designed, and the efficient flow and energy exchange of refrigerant between different heat exchangers is achieved by setting coupling auxiliary components on the left and right sides of the compressor, including multiple heat exchangers, valves, solenoid valves, etc.
It greatly improves the cooling performance, reduces operating costs and carbon dioxide emissions, avoids frost problems during heating, improves heat exchange efficiency, and meets the annual cooling and heating needs.
Smart Images
Figure CN222911839U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of heat pump air-conditioning systems, in particular to a novel multi-energy source coupled heat pump air-conditioning system. Background Art
[0002] For water-cooled chillers using cooling towers, since water-cooled chillers can only cool but cannot heat in winter, it is usually necessary to set up another heat source such as a boiler for winter heating. That is, two systems must be set up at the same time to meet the needs of cooling and heating throughout the year, which requires high investment, large floor space, and complex operation and maintenance. However, heat sources such as boilers are often subject to many objective restrictions, including natural gas supply and environmental protection. In addition, boilers also have a certain explosion hazard. In cases where such heat sources cannot be used, air-cooled heat pump units are usually used to solve the problems of heating and cooling throughout the year. Air-cooled heat pump units can meet both cooling and heating needs, so they are widely used in my country and have a very high market share. However, there are currently many problems with air-cooled heat pumps. In terms of refrigeration, compared with water-cooled types, air-cooled heat pumps have relatively low energy efficiency and high operating energy consumption. In high temperature environments, the cooling effect decreases significantly, affecting the comfort of air conditioners. When heating, the surface of the outdoor heat exchanger is prone to frost, affecting the heat exchange efficiency of the air conditioner, and the defrosting energy consumption is high. It also has a greater impact on the indoor heating effect, and the comfort level is far inferior to other methods. The main solution at present is still to improve the existing technology in terms of compressor performance, heat exchanger structure, intelligent frost control, etc. based on the existing system form. However, due to the constraints of thermodynamic theory, local improvements cannot fundamentally solve the major problems existing in air-cooled heat pump air-conditioning units.
[0003] The above scheme and the prior art have little effect on the coupling of other new energy sources to the heat pump air-conditioning system when it is working. During its use, the air-cooled heat pump unit has low refrigeration performance and high operating energy consumption. Frosting and defrosting problems often occur under heating conditions, which cannot meet actual use requirements.
[0004] To this end, the utility model proposes a novel multi-energy source coupled heat pump air conditioning system for solving the above problems. Utility Model Content
[0005] The purpose of the utility model is to provide a novel multi-energy source coupled heat pump air conditioning system to solve the problems raised in the above background technology.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a novel multi-energy source coupled heat pump air conditioning system, comprising a compressor, a first four-way reversing valve and a coupling auxiliary component, wherein a base is fixedly arranged on the bottom end surface of the compressor, and interfaces are fixedly arranged equidistantly and symmetrically on the left and right sides of the compressor, and one end of the interface is connected to a joint through a thread, and one end of the joint is connected to a pipeline, and one end of the pipeline is connected to the first four-way reversing valve, the coupling auxiliary component is arranged on the left and right sides of the compressor, and the coupling auxiliary component includes an auxiliary component;
[0007] The auxiliary components include a second four-way reversing valve, a fan, an outdoor primary air-cooled heat exchanger, an outdoor secondary liquid-cooled heat exchanger, a one-way valve, a two-way valve, a three-way valve, a four-way valve, a liquid storage tank, a sight glass, a drying filter, a solenoid valve, an electronic expansion valve, an evaporator, a gas-liquid separator, a first solenoid valve, a second solenoid valve, a third solenoid valve, a fourth solenoid valve, and a fifth solenoid valve; one end of the second four-way reversing valve is connected to the outdoor primary air-cooled heat exchanger through the fourth solenoid valve, and the branch line of the second four-way reversing valve is connected to one end of the fifth solenoid valve through the second solenoid valve, and the fan is connected to one end of the fourth solenoid valve, and one end of the outdoor primary air-cooled heat exchanger is connected to the fifth solenoid valve. It is connected to an outdoor secondary liquid-cooled heat exchanger, and one end of the fifth solenoid valve is connected to the second four-way reversing valve through the first solenoid valve, and one end of the outdoor secondary liquid-cooled heat exchanger is connected to the second four-way reversing valve through the third solenoid valve, and the second four-way reversing valve is connected to a liquid storage tank through a one-way valve two, and one end of the liquid storage tank is connected to a sight glass, and the sight glass is connected to an electronic expansion valve through a drying filter and a solenoid valve, and the electronic expansion valve is connected to an evaporator through a one-way valve four, and the evaporator is connected to a gas-liquid separator through a first four-way reversing valve, and one end of the one-way valve two is connected to one-way valve three, and one end of the one-way valve four is connected to one-way valve one.
[0008] Preferably, the compressor is arranged in corresponding positions to the first four-way reversing valve and the second four-way reversing valve, and the number of arranged groups is the same.
[0009] Preferably, the fans are arranged at corresponding positions to the outdoor first-stage air-cooled heat exchanger and the outdoor second-stage liquid-cooled heat exchanger, and the number of arranged groups is the same.
[0010] Preferably, the one-way valve one has corresponding setting positions to the one-way valve two, the one-way valve three and the one-way valve four, and the number of setting groups is the same.
[0011] Preferably, the liquid storage tank, the sight glass, and the drying filter are arranged in corresponding positions and have the same number of groups.
[0012] Compared with the prior art, the beneficial effects of the utility model are:
[0013] By setting a coupling auxiliary component on the connecting end compressor of the heat pump air-conditioning system coupled with multiple energy sources, the problems of low refrigeration performance and high operating energy consumption of the air-cooled heat pump unit can be improved, the refrigeration performance can be greatly improved, the operating costs can be reduced, the carbon dioxide emissions can be reduced, energy saving and environmental protection can be achieved, and the problem of low refrigeration efficiency of the air-cooled heat pump or air source heat pump unit can be fundamentally solved. By coupling other energy sources, the frosting and defrosting problems that often occur under the heating conditions of the air-cooled heat pump can be avoided, the heat exchange efficiency of the heat exchanger can be improved, the defrosting energy consumption can be saved, and the actual use needs can be met. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is a schematic diagram of the overall process structure of the utility model;
[0015] Figure 2 This is a schematic diagram of the cooling and heating working conditions of the coupled heat pump air conditioning system of the utility model;
[0016] Figure 3 This is a schematic diagram of the structure of the compressor of the utility model;
[0017] Figure 4 This is a front view structural diagram of the compressor of the utility model.
[0018] In the figure: compressor 1, interface 101, connector 102, pipeline 103, base 104, first four-way reversing valve 2, second four-way reversing valve 3, fan 4, outdoor primary air-cooled heat exchanger 5, outdoor secondary liquid-cooled heat exchanger 6, one-way valve 1 7, one-way valve 2 8, one-way valve 3 9, one-way valve 4 10, liquid storage tank 11, sight glass 12, drying filter 13, solenoid valve 14, electronic expansion valve 15, evaporator 16, gas-liquid separator 17, first solenoid valve 18, second solenoid valve 19, third solenoid valve 20, fourth solenoid valve 21, fifth solenoid valve 22. DETAILED DESCRIPTION
[0019] The technical solutions in the embodiments of the utility model are described clearly and completely below. The embodiments of the utility model and all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0020] Embodiment 1
[0021] See also Figures 1 to 4 A novel multi-energy source coupled heat pump air conditioning system. The utility model provides a technical solution: The refrigeration working process of the novel multi-energy source coupled heat pump air conditioning system:
[0022] When the primary air-cooled heat exchanger bears part of the load
[0023] At this time, the first-stage air-cooled heat exchanger and the second-stage liquid-cooled heat exchanger are both in working condition, the switching valves 20, 21, and 22 are in the open state, and the switching valves 18 and 19 are in the closed state.
[0024] After being pressurized and heated by the compressor 1, the circulating refrigerant of the unit becomes a high-pressure gas and enters the first four-way reversing valve 2. It flows into the second four-way reversing valve 3 through reversing. After further reversing, it flows into the outdoor primary air-cooled heat exchanger 5 through the switching valve 21 in the open state. The heat of the circulating refrigerant is transferred to the outdoor air through the mechanical ventilation of the fan 4. The refrigerant releases heat and changes from a high-pressure gas to a high-pressure gas-liquid two-phase mixture. After flowing out through the outdoor primary air-cooled heat exchanger 5, it flows into the outdoor secondary liquid-cooled heat exchanger 6 through the solenoid valve 22 in the open state. The heat of the refrigerant is transferred to the second energy source circulating medium through the coil in the condenser. The refrigerant releases heat and changes from a high-pressure gas-liquid two-phase mixture to The high-pressure liquid then flows into the second four-way reversing valve 3, and after reversing, flows into the liquid storage tank 11 through the one-way valve 2 8, flows through the sight glass 12, enters the drying filter for drying and filtering impurities, passes through the solenoid valve 14 and enters the electronic expansion valve 15 for pressure reduction and cooling, and changes from high-pressure liquid to low-pressure liquid, and the circulating refrigerant realizes cooling, and then flows into the evaporator 16 through the one-way valve 10, absorbs the heat of the medium on the use side through the coil in the evaporator, reduces the temperature of the medium on the use side, and realizes cooling, flows out of the evaporator 16, changes direction through the first four-way reversing valve 2, and flows into the gas-liquid separator 17 for gas-liquid separation to prevent gas from entering the compressor, and the separated liquid enters the compressor 1 for the next round of circulation.
[0025] When the primary air-cooled heat exchanger does not bear part of the load
[0026] At this time, the primary air-cooled heat exchanger is not working, the secondary liquid-cooled heat exchanger is in working state, the switching valves 18, 21, and 22 are in the closed state, and the switching valves 19 and 20 are in the open state. After being pressurized and heated by the compressor 1, the circulating refrigerant of the unit becomes high-pressure gas, enters the first four-way reversing valve 2, and flows into the second four-way reversing valve 3 through reversing. After further reversing, it flows directly into the secondary liquid-cooled heat exchanger 6 through the switching valve 19 in the open state, and the subsequent process is the same as the above.
[0027] When the secondary liquid-cooled heat exchanger is not under load
[0028] At this time, the secondary liquid-cooled heat exchanger is not working, the primary air-cooled heat exchanger is in working state, the switching valves 18 and 21 are in the open state, and the switching valves 19, 20, and 22 are in the closed state. After being pressurized and heated by the compressor 1, the circulating refrigerant of the unit becomes high-pressure gas, enters the first four-way reversing valve 2, and flows into the second four-way reversing valve 3 through reversing. After further reversing, it flows into the outdoor primary air-cooled heat exchanger 5 through the switching valve 21 in the open state. The heat of the circulating refrigerant is transferred to the outdoor air through the mechanical ventilation of the fan 4. The refrigerant releases heat and changes from high-pressure gas to a high-pressure gas-liquid two-phase mixture. After flowing out of the outdoor primary air-cooled heat exchanger 5, it directly flows into the second four-way reversing valve 3 through the switching valve 18. The subsequent process is the same as the above.
[0029] Embodiment 2
[0030] The heating working process of the new multi-energy source coupled heat pump air conditioning system:
[0031] When the primary air-cooled heat exchanger bears part of the load
[0032] At this time, the first-stage air-cooled heat exchanger and the second-stage liquid-cooled heat exchanger are both in working condition, the switching valves 20, 21, and 22 are in the open state, and the switching valves 18 and 19 are in the closed state.
[0033] After being pressurized and heated by compressor 1, the circulating refrigerant of the unit becomes high-pressure and high-temperature gas, enters the first four-way reversing valve 2, and flows into evaporator 16 after reversing. The high-pressure and high-temperature gas releases heat to the medium on the user side through the coil inside the evaporator, thereby increasing the temperature of the medium on the user side and realizing heating. The high-pressure and high-temperature gas releases heat and becomes high-pressure liquid, flows into liquid storage tank 11 through one-way valve 3 9, flows through sight glass 12, enters drying filter for drying and filtering impurities, passes through solenoid valve 14 and enters electronic expansion valve 15 for decompression and cooling, and changes from high-pressure liquid to low-pressure liquid, and the circulating refrigerant realizes cooling, and then flows into second four-way reversing valve 3 through one-way valve 1 7, and after further reversing, flows into outdoor primary air-cooled exchange through 21 which is in the open state. Heat exchanger 5, the heat of the circulating refrigerant is transferred to the outdoor air through the mechanical ventilation of the fan 4, the refrigerant releases heat, and changes from a high-pressure gas to a high-pressure gas-liquid two-phase mixture, and flows out through the outdoor first-level air-cooled heat exchanger 5, and flows into the outdoor second-level liquid-cooled heat exchanger 6 through the solenoid valve 22 in the open state, and transfers the heat of the refrigerant to the second energy source circulating medium through the coil in the condenser. The refrigerant releases heat and changes from a high-pressure gas-liquid two-phase mixture to a high-pressure liquid, and then flows into the second four-way reversing valve 3 through the switching valve 20, and then flows into the first four-way reversing valve 2 after reversing, and then flows into the gas-liquid separator 17 after further reversing for gas-liquid separation to prevent gas from entering the compressor, and the separated liquid enters the compressor 1 for the next round of circulation.
[0034] When the primary air-cooled heat exchanger does not bear part of the load
[0035] At this time, the primary air-cooled heat exchanger is not working, the secondary liquid-cooled heat exchanger is in working state, the switching valves 18, 21, and 22 are in the closed state, and the switching valves 19 and 20 are in the open state. After being pressurized and heated by the compressor 1, the circulating refrigerant of the unit becomes high-pressure gas, enters the first four-way reversing valve 2, and flows into the second four-way reversing valve 3 through reversing. After further reversing, it flows directly into the secondary liquid-cooled heat exchanger 6 through the switching valve 19 in the open state, and the subsequent process is the same as the above.
[0036] When the secondary liquid-cooled heat exchanger is not under load
[0037] At this time, the secondary liquid-cooled heat exchanger is not working, the primary air-cooled heat exchanger is in working state, the switching valves 18 and 21 are in the open state, and the switching valves 19, 20, and 22 are in the closed state. After being pressurized and heated by the compressor 1, the circulating refrigerant of the unit becomes high-pressure gas, enters the first four-way reversing valve 2, and flows into the second four-way reversing valve 3 through reversing. After further reversing, it flows into the outdoor primary air-cooled heat exchanger 5 through the switching valve 21 in the open state. The heat of the circulating refrigerant is transferred to the outdoor air through the mechanical ventilation of the fan 4. The refrigerant releases heat and changes from high-pressure gas to a high-pressure gas-liquid two-phase mixture. After flowing out of the outdoor primary air-cooled heat exchanger 5, it directly flows into the second four-way reversing valve 3 through the switching valve 18. The subsequent process is the same as the above.
[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A novel multi-energy source coupled heat pump air conditioning system, characterized in that: The invention comprises a compressor (1), a first four-way reversing valve (2) and a coupling auxiliary component, wherein a base (104) is fixedly arranged on the bottom end surface of the compressor (1), and interfaces (101) are fixedly arranged symmetrically and equidistantly on the left and right sides of the compressor (1), and one end of the interface (101) is connected to a joint (102) via a thread, and one end of the joint (102) is connected to a pipeline (103), and one end of the pipeline (103) is connected to the first four-way reversing valve (2), and the coupling auxiliary component is arranged on the left and right sides of the compressor (1), and the coupling auxiliary component comprises an auxiliary component; The auxiliary components include a second four-way reversing valve (3), a fan (4), an outdoor primary air-cooled heat exchanger (5), an outdoor secondary liquid-cooled heat exchanger (6), a first check valve (7), a second check valve (8), a third check valve (9), a fourth check valve (10), a liquid storage tank (11), a liquid sight glass (12), a drying filter (13), a solenoid valve (14), an electronic expansion valve (15), an evaporator (16), a gas-liquid separator (17), a first solenoid valve (18), a second solenoid valve (19), a third ... The first solenoid valve (20) is connected to the second four-way reversing valve (3), the fourth solenoid valve (21) is connected to the first outdoor air-cooled heat exchanger (5) through the fourth solenoid valve (21), and the branch line of the second four-way reversing valve (3) is connected to one end of the fifth solenoid valve (22) through the second solenoid valve (19), and the fan (4) is connected to one end of the fourth solenoid valve (21), and one end of the first outdoor air-cooled heat exchanger (5) is connected to the first outdoor air-cooled heat exchanger (5) through the fifth solenoid valve (22). The electromagnetic valve (22) is connected to the outdoor secondary liquid-cooled heat exchanger (6), and one end of the fifth electromagnetic valve (22) is connected to the second four-way reversing valve (3) through the first electromagnetic valve (18), and one end of the outdoor secondary liquid-cooled heat exchanger (6) is connected to the second four-way reversing valve (3) through the third electromagnetic valve (20), and the second four-way reversing valve (3) is connected to the liquid storage tank (11) through the one-way valve (8), and one end of the liquid storage tank (11) is connected to the sight glass (12). The liquid sight glass (12) is connected to the electronic expansion valve (15) through the provided drying filter (13) and the electromagnetic valve (14), and the electronic expansion valve (15) is connected to the evaporator (16) through the provided one-way valve four (10), and the evaporator (16) is connected to the gas-liquid separator (17) through the provided first four-way reversing valve (2), and one end of the one-way valve two (8) is connected to the one-way valve three (9), and one end of the one-way valve four (10) is connected to the one-way valve one (7).
2. A novel multi-energy source coupled heat pump air conditioning system according to claim 1, characterized in that: The compressor (1) is arranged at corresponding positions to the first four-way reversing valve (2) and the second four-way reversing valve (3) and has the same number of arrangement groups.
3. A novel multi-energy source coupled heat pump air conditioning system according to claim 1, characterized in that: The fan (4) is arranged at corresponding positions to the outdoor primary air-cooled heat exchanger (5) and the outdoor secondary liquid-cooled heat exchanger (6), and the number of arranged groups is the same.
4. A novel multi-energy source coupled heat pump air conditioning system according to claim 1, characterized in that: The one-way valve 1 (7) is arranged at corresponding positions to the one-way valve 2 (8), the one-way valve 3 (9) and the one-way valve 4 (10) and has the same number of arrangement groups.
5. The novel multi-energy source coupled heat pump air conditioning system according to claim 1 is characterized in that: The liquid storage tank (11), the sight glass (12) and the drying filter (13) are arranged at corresponding positions and have the same number of groups.