Auxiliary liquid cooling heat exchange energy-saving device for air conditioner
By introducing a liquid-cooled heat exchange condenser into the air conditioning system and using cooling water for heat exchange, the problem of poor heat dissipation in high-temperature environments of air-cooled air conditioners is solved, achieving stable operation of the compressor and energy-saving effect of the air conditioner.
Patent Information
- Application Number
- CN202423304288.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-12-31
AI Technical Summary
Most air-cooled air conditioners have poor heat dissipation performance in high outdoor temperatures, leading to high-pressure and high-temperature protection of the compressor, reduced cooling capacity, low energy efficiency ratio, high power consumption, shortened lifespan, and increased maintenance costs.
A liquid-cooled heat exchange condenser is introduced into the air conditioning system. It works in conjunction with the external condenser of the air conditioner through an internal and external circulation system, using cooling water for heat exchange to replace the air-cooled mode. Stable operation is achieved by switching with a solenoid valve.
Maintaining the compressor's rated operating pressure and current in high-temperature environments achieves energy saving and avoids increased current caused by prolonged high temperature and high pressure, thereby improving the air conditioner's lifespan and energy efficiency.
Smart Images
Figure CN223512198U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of air conditioning and refrigeration technology, and specifically relates to an air conditioning auxiliary liquid cooling heat exchange energy-saving device. Background Technology
[0002] Most air-cooled air conditioners have much worse heat dissipation conditions for their external condensers than theoretically possible. For example, due to the installation location of the air conditioner, scale buildup on the external condenser can cause the air conditioner compressor to frequently trigger high-pressure and high-temperature protection, resulting in problems such as reduced cooling capacity, low energy efficiency ratio, high compressor power consumption, shortened lifespan, and increased maintenance costs. Utility Model Content
[0003] This invention addresses the aforementioned problems and overcomes the shortcomings of existing technologies by providing an air conditioning liquid-cooled auxiliary heat exchange energy-saving device. This invention can improve the energy-saving effect of air conditioning, especially in outdoor high-temperature environments, enabling the compressor to operate stably at its rated working pressure and current, thereby achieving the purpose of saving electricity and energy.
[0004] To achieve the above objectives, the present invention adopts the following technical solution.
[0005] This utility model provides an auxiliary liquid-cooled heat exchange energy-saving device for air conditioning, including a high-temperature, high-pressure refrigerant main pipe connecting the high-pressure end of the compressor of the indoor unit and the refrigerant inlet of the outdoor condenser, and a low-temperature, low-pressure refrigerant main pipe connecting the electronic expansion valve of the indoor unit and the refrigerant outlet of the outdoor condenser. The device is characterized by having a first solenoid valve connected to the low-temperature, low-pressure refrigerant main pipe and a second solenoid valve connected to the high-temperature, high-pressure refrigerant main pipe. It also includes a liquid-cooled heat exchange condenser, a refrigerant inlet branch pipe, and a refrigerant outlet branch pipe. The liquid-cooled heat exchange condenser includes an internal circulation system and an external circulation system. The internal circulation system connects to the indoor unit and the outdoor condenser of the air conditioner to achieve a closed-loop refrigeration cycle. The internal circulation system is connected to the refrigerant inlet branch pipe and the refrigerant outlet branch pipe respectively. The refrigerant inlet branch pipe is connected to the high-temperature and high-pressure refrigerant main pipe, and the refrigerant outlet branch pipe is connected to the low-temperature and low-pressure refrigerant main pipe. The connection point between the refrigerant outlet branch pipe and the low-temperature and low-pressure refrigerant main pipe is located at the rear end of the first solenoid valve. A third solenoid valve is installed on the refrigerant inlet branch pipe, and a fourth solenoid valve is installed on the refrigerant outlet branch pipe. The external circulation system circulates and cools the cooling water inside the liquid-cooled condenser.
[0006] Furthermore, the liquid-cooled heat exchange condenser includes a housing, the lower part of which is provided with a cooling water inlet and into which cooling water is injected.
[0007] Furthermore, the internal circulation system includes a heat exchange coil disposed in the lower part of the housing, the heat exchange coil being immersed in the cooling water in the lower part of the housing, the two ends of the heat exchange coil being connected to a refrigerant inlet connector and a refrigerant outlet connector in the lower part of the housing, respectively, the refrigerant inlet branch pipe being connected to the refrigerant inlet connector, and the refrigerant outlet branch pipe being connected to the refrigerant outlet connector.
[0008] Furthermore, the external circulation system includes a circulating water pump, a water supply pipe, a water distribution pipe, water cooling packing, and an air filter. The circulating water pump is located outside the lower part of the tank, the water distribution pipe is connected to the upper part of the tank, the water supply pipe is connected to the circulating water pump and the water distribution pipe on the outside of the tank, the water cooling packing is located inside the tank and directly below the water distribution pipe, the air filter is located on the side wall of the tank and below the water cooling packing, and a cooling fan is provided on the top of the tank.
[0009] Furthermore, a drain valve is provided at the bottom of the box.
[0010] Furthermore, a float valve is installed inside the housing, which floats on the surface of the cooling water inside the housing and is connected to the cooling water inlet.
[0011] Furthermore, the housing is divided into an upper part and a lower part, which are detachably connected by connecting screws and nuts.
[0012] The beneficial effects of this utility model.
[0013] This invention addresses the inconvenience of traditional piping between the outdoor condenser and indoor unit of an air conditioner by adding a parallel liquid-cooled heat exchange condenser to replace the air-cooled mode that previously used the outdoor condenser. This liquid-cooled heat exchange not only allows the indoor unit compressor to operate stably at its rated working pressure and current, but also achieves energy savings. In particular, it solves the problem of poor heat dissipation in high-temperature air-cooled air conditioners during summer, preventing the compressor from operating at high temperatures and pressures for extended periods, thus avoiding increased current and power consumption. Simultaneously, the original air-cooled air conditioning refrigeration piping is retained, and the use of one type of piping is switched via valves according to the compressor's operating current, ensuring no interference during operation and further improving energy efficiency. Attached Figure Description
[0014] To make the technical problems solved, the technical solutions, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0016] The diagram shows the following markings: 1 for high-temperature, high-pressure refrigerant main pipe; 2 for low-temperature, low-pressure refrigerant main pipe; 3 for the first solenoid valve; 4 for the second solenoid valve; 5 for the liquid-cooled heat exchange condenser; 6 for the refrigerant inlet branch pipe; 7 for the refrigerant outlet branch pipe; 8 for the third solenoid valve; 9 for the fourth solenoid valve; 10 for the housing; 11 for the cooling water inlet; 12 for the heat exchange coil; 13 for the refrigerant inlet connector; 14 for the refrigerant outlet connector; 15 for the circulating water pump; 16 for the water supply pipeline; 17 for the water distribution pipe; 18 for the water cooling packing; 19 for the air filter port; 20 for the cooling fan; 21 for the drain valve; 22 for the float valve; 23 for the upper split unit; 24 for the lower split unit; 25 for the connecting screw and nut; 26 for the high-pressure end of the compressor; 27 for the refrigerant inlet of the external condenser; 28 for the electronic expansion valve; 29 for the refrigerant outlet of the external condenser; 30 for the evaporator; 31 for the low-pressure end of the compressor; and 32 for the air conditioner's external condenser. Detailed Implementation
[0017] Combined with appendix Figure 1 As shown, this embodiment provides an air conditioning auxiliary liquid cooling heat exchange energy-saving device, including a high-temperature and high-pressure refrigerant main pipe 1 connecting the high-pressure end 26 of the air conditioner indoor unit compressor and the refrigerant inlet 27 of the air conditioner outdoor condenser 32, and a low-temperature and low-pressure refrigerant main pipe 2 connecting the electronic expansion valve 28 of the air conditioner indoor unit and the refrigerant outlet 29 of the air conditioner outdoor condenser 32. Existing air conditioning refrigeration systems use an air-cooled condensation mode for the refrigerant via the air conditioner outdoor condenser 32. The high-temperature and high-pressure gaseous refrigerant discharged from the high-pressure end 26 of the air conditioner indoor unit compressor enters the air conditioner outdoor condenser 32 through the high-temperature and high-pressure refrigerant main pipe 1. After condensation in the air conditioner outdoor condenser 32, the low-temperature and low-pressure liquid refrigerant exiting from the low-temperature and low-pressure refrigerant main pipe 2 enters the electronic expansion valve 28 and evaporator 30 inside the air conditioner indoor unit, finally returning to the low-pressure end 31 of the compressor, completing one refrigeration cycle.
[0018] In order to reduce the impact of the external environment on the increase of compressor energy consumption, a first solenoid valve 3 is connected to the low temperature and low pressure refrigerant main pipe 2, and a second solenoid valve 4 is connected to the high temperature and high pressure refrigerant main pipe 1. When using this energy-saving device in liquid cooling condensation mode, the first solenoid valve 3 and the second solenoid valve 4 are closed, and the original air-cooled condensation mode of the air conditioner external condenser 32 is no longer used.
[0019] When using liquid cooling condensation mode, a liquid cooling heat exchange condenser 5 is used, and a refrigerant inlet branch pipe 6 and a refrigerant outlet branch pipe 7 are added.
[0020] The liquid-cooled heat exchange condenser 5 includes a housing 10, with a cooling water inlet 11 in the middle of the housing 10 and cooling water injected inside. A drain valve 21 is provided at the bottom of the housing 10, and the drain valve 21 is opened to drain the cooling water only when it is necessary to replace the cooling water.
[0021] A float valve 22 is installed inside the housing 10. The float valve 22 floats on the surface of the cooling water inside the housing 10 and is connected to the cooling water inlet 11. When the cooling water in the housing 10 is filled to a certain extent, the float valve 22 will float up and close the cooling water inlet 11 to prevent excessive cooling water.
[0022] The liquid-cooled heat exchange condenser 5 includes an internal circulation system and an external circulation system. The internal circulation system is connected between the indoor unit of the air conditioner and the external condenser 32 to achieve a closed-loop refrigeration cycle. The internal circulation system includes a heat exchange coil 12 located in the lower part of the casing 10. The heat exchange coil 12 is made of stainless steel and is immersed in the cooling water inside the casing. The tube wall can fully contact the cooling water, resulting in higher heat exchange efficiency. Compared with the conventional method of spraying heat exchange onto the heat exchange coil, the tube wall is less prone to oxidation and scale formation.
[0023] The heat exchange coil 12 is connected at both ends to the refrigerant inlet connector 13 and the refrigerant outlet connector 14 at the bottom of the housing 10, respectively. The refrigerant inlet branch pipe 6 is connected to the refrigerant inlet connector 13, and the refrigerant outlet branch pipe 7 is connected to the refrigerant outlet connector 14. The refrigerant inlet branch pipe 6 is connected to the high-temperature and high-pressure refrigerant main pipe 1, and the refrigerant outlet branch pipe 7 is connected to the low-temperature and low-pressure refrigerant main pipe 2. The connection point between the refrigerant outlet branch pipe 7 and the low-temperature and low-pressure refrigerant main pipe 2 is located at the rear end of the first solenoid valve 3. The connection point between the refrigerant inlet branch pipe 6 and the high-temperature and high-pressure refrigerant main pipe 1 is located at the rear end of the second solenoid valve 4. A third solenoid valve 8 is installed on the refrigerant inlet branch pipe 6, and a fourth solenoid valve 9 is installed on the refrigerant outlet branch pipe 7.
[0024] When using a liquid-cooled heat exchange condenser 5 to replace the existing air conditioner outdoor condenser 32 for refrigerant condensation, the first solenoid valve 3 and the second solenoid valve 4 are closed, and the third solenoid valve 8 and the fourth solenoid valve 9 are opened. At this time, the refrigerant liquid cooling mode is circulated. The high-temperature and high-pressure gaseous refrigerant discharged from the high-pressure end 26 of the compressor enters the heat exchange coil 12 through the third solenoid valve 8. During the flow of the refrigerant inside the heat exchange coil 12, it exchanges heat with the cooling water in the casing 10 through the pipe wall. The low-temperature and low-pressure liquid refrigerant coming out of the fourth solenoid valve 9 of the heat exchange coil 12 enters the electronic expansion valve 28 and evaporator 30 in the indoor unit of the air conditioner and finally returns to the low-pressure end 31 of the compressor to complete one refrigeration cycle.
[0025] In addition, the liquid-cooled heat exchange condenser 5 itself needs to be self-cooled by external circulation. The external circulation system circulates and cools the cooling water inside the liquid-cooled heat exchange condenser 5.
[0026] The external circulation system includes a circulating water pump 15, a water supply pipe 16, a water distribution pipe 17, a water cooling packing 18, and an air filter 19. The circulating water pump 15 is located outside the lower part of the housing 10. The water distribution pipe 17 is connected to the upper part of the housing 10. The water supply pipe 16 is connected to the circulating water pump 15 and the water distribution pipe 17 on the outside of the housing 10. The water cooling packing 18 is located inside the housing 10 and directly below the water distribution pipe 17. The water cooling packing 18 uses commonly used cool water honeycomb packing. The air filter 19 is located on the side wall of the housing 10 and below the water cooling packing 18. A cooling fan 20 is installed on the top of the housing 10.
[0027] After external circulation heat exchange, the cooling water heated at the bottom of the housing 10 is sent to the water distribution pipe 17 by the circulating water pump 15 through the water supply pipe 16. The water distribution pipe 17 sprays the water evenly onto the cooling packing 18. As the water flows through the water cooling packing 18, it will exchange air and water heat with the air drawn in by the cooling fan 20 through the air filter port 19. After being cooled down, the heated cooling water falls back to the bottom of the housing 10 and is recycled. The hot and humid air after heat exchange is discharged by the cooling fan 20, realizing external circulation self-cooling of cooling water. Figure 1 The direction of the middle arrow indicates the flow direction of the refrigerant in each mode during use.
[0028] The housing 10 is divided into an upper section 23 and a lower section 24, which are detachably connected by a connecting screw and nut 25. Figure 1 As shown, the lower section 24 is used to store cooling water. The cooling water inlet 11 is located on the side of the lower section 24, the drain valve 21 is located at the bottom of the lower section 24, the heat exchange coil 12 is located inside the lower section 24, and the circulating water pump 15 is also connected to the outside of the lower section 24. The water distribution pipe 17, water cooling packing 18, and air filter 19 are all connected inside the upper section 23, and the cooling fan 20 is located at the top of the upper section 23. If maintenance is required on the housing 10 and the heat exchange coil 12, simply disassemble the upper section 23.
[0029] When performing maintenance on the housing 10 and heat exchange coil 12, it is necessary to close the third solenoid valve 8 and the fourth solenoid valve 9, and start the first solenoid valve 3 and the second solenoid valve 4 to automatically switch to the operation of the outdoor condenser of the air conditioner.
[0030] The working principle of the liquid-cooled heat exchanger energy-saving device controller is as follows: When the air conditioner is in normal cooling operation, when the controller monitors that the compressor operating current is ≤ rated operating current value (settable) and remains stable, the air conditioner's external condenser 32 is normally activated. At this time, the third solenoid valve 8 and the fourth solenoid valve 9 are in the closed state, while the first solenoid valve 3 and the second solenoid valve 4 are in the open state, and the liquid-cooled heat exchanger condenser is disabled.
[0031] When the controller detects that the compressor operating current is greater than the rated operating current value (adjustable) for more than 30 minutes (adjustable), it opens the third solenoid valve 8 and the fourth solenoid valve 9, while closing the first solenoid valve 3 and the second solenoid valve 4, enabling the liquid-cooled heat exchange condenser 5 to work, and disabling the air conditioner external condenser 32.
[0032] It should be noted that the liquid-cooled heat exchange condenser 5 and the air conditioner external condenser 32 (air-cooled) should not be used simultaneously to avoid mutual interference and poor cooling effect.
[0033] It is understood that the above specific description of this utility model is only used to illustrate this utility model and is not limited to the technical solutions described in the embodiments of this utility model. Those skilled in the art should understand that modifications or equivalent substitutions can still be made to this utility model to achieve the same technical effect; as long as the use needs are met, they are all within the protection scope of this utility model.
Claims
1. An air conditioning auxiliary liquid cooling heat exchange energy-saving device, comprising a high-temperature and high-pressure refrigerant main pipe (1) connecting the high-pressure end (26) of the compressor of the air conditioning indoor unit and the refrigerant inlet (27) of the external condenser of the air conditioning outdoor condenser (32), and a low-temperature and low-pressure refrigerant main pipe (2) connecting the electronic expansion valve (28) of the air conditioning indoor unit and the refrigerant outlet (29) of the external condenser of the air conditioning outdoor condenser (32), characterized in that, A first solenoid valve (3) is connected to the low-temperature, low-pressure refrigerant main pipe (2), and a second solenoid valve (4) is connected to the high-temperature, high-pressure refrigerant main pipe (1). The system also includes a liquid-cooled heat exchange condenser (5), a refrigerant inlet branch pipe (6), and a refrigerant outlet branch pipe (7). The liquid-cooled heat exchange condenser (5) includes an internal circulation system and an external circulation system. The internal circulation system is connected between the indoor unit of the air conditioner and the outdoor condenser (32) to achieve a closed-loop refrigeration cycle. The internal circulation system is connected to the refrigerant inlet branch pipe (6) and the refrigerant outlet branch pipe, respectively. (7) Connection: The refrigerant inlet branch pipe (6) is connected to the high temperature and high pressure refrigerant main pipe (1), and the refrigerant outlet branch pipe (7) is connected to the low temperature and low pressure refrigerant main pipe (2). The connection point between the refrigerant outlet branch pipe (7) and the low temperature and low pressure refrigerant main pipe (2) is located at the rear end of the first solenoid valve (3). A third solenoid valve (8) is provided on the refrigerant inlet branch pipe (6), and a fourth solenoid valve (9) is provided on the refrigerant outlet branch pipe (7). The external circulation system circulates and cools the cooling water inside the liquid-cooled heat exchange condenser (5).
2. The air conditioning auxiliary liquid cooling heat exchange energy-saving device according to claim 1, characterized in that, The liquid-cooled heat exchange condenser (5) includes a housing (10), and a cooling water inlet (11) is provided at the bottom of the housing (10) and cooling water is injected inside.
3. The air conditioning auxiliary liquid cooling heat exchange energy-saving device according to claim 2, characterized in that, The internal circulation system includes a heat exchange coil (12) located in the lower part of the housing (10). The heat exchange coil (12) is immersed in the cooling water in the lower part of the housing (10). The two ends of the heat exchange coil (12) are respectively connected to the refrigerant inlet connector (13) and the refrigerant outlet connector (14) in the lower part of the housing (10). The refrigerant inlet branch pipe (6) is connected to the refrigerant inlet connector (13), and the refrigerant outlet branch pipe (7) is connected to the refrigerant outlet connector (14).
4. The air conditioning auxiliary liquid cooling heat exchange energy-saving device according to claim 2, characterized in that, The external circulation system includes a circulating water pump (15), a water supply pipe (16), a water distribution pipe (17), a water cooling packing (18), and an air filter (19). The circulating water pump (15) is located outside the lower part of the housing (10). The water distribution pipe (17) is connected to the upper part inside the housing (10). The water supply pipe (16) is connected to the circulating water pump (15) on the outside of the housing (10) and connected to the water distribution pipe (17). The water cooling packing (18) is located inside the housing (10) and directly below the water distribution pipe (17). The air filter (19) is located on the side wall of the housing (10) and below the water cooling packing (18). A cooling fan (20) is provided on the top of the housing (10).
5. An air conditioning auxiliary liquid cooling heat exchange energy-saving device according to claim 2, characterized in that, A drain valve (21) is provided at the bottom of the box (10).
6. The air conditioning auxiliary liquid cooling heat exchange energy-saving device according to claim 2, characterized in that, A float valve (22) is installed inside the housing (10). The float valve (22) floats on the surface of the cooling water inside the housing (10) and is connected to the cooling water inlet (11).
7. The air conditioning auxiliary liquid cooling heat exchange energy-saving device according to claim 2, characterized in that, The housing (10) is divided into an upper part (23) and a lower part (24), which are detachably connected by a connecting screw and nut (25).