Liquid homogenizing structure of condenser header during refrigeration and heating of air-cooled heat pump unit
By designing the condenser header structure in the air-cooled heat pump unit, and using components such as main pipe, liquid distributor head and solenoid valve, the uniform distribution of refrigerant is achieved, which solves the problems of poor pressure drop and poor oil return during cooling and heating conversion of the air-cooled heat pump unit, and improves the stability and efficiency of the unit.
Patent Information
- Application Number
- CN202422114534.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-30
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-08-30
AI Technical Summary
During the cooling and heating conversion of air-cooled heat pump unit, there are problems of poor pressure drop and poor oil return, which affects the regulation stability of the electronic expansion valve of the throttling device.
The condenser header is uniformly distributed in a cooling and heating structure during the air-cooled heat pump unit, including a main pipe, a liquid dispensing head, an auxiliary liquid dispensing pipe, a solenoid valve and a check valve. By changing the liquid inlet pipe/dispensing pipe combination form of the condenser, the uniform distribution of the refrigerant is achieved.
It improves the utilization efficiency of refrigerant, reduces the unit pressure caused by ineffective heat exchange, and improves the stability and efficiency of the unit.
Smart Images
Figure CN223138131U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of air conditioning equipment, and particularly relates to a liquid equalizing structure of a condenser header during refrigeration and heating of an air-cooled heat pump unit. Background Art
[0002] In the existing structure, the outlet side header of the outdoor condenser of the air-cooled heat pump unit uses the same liquid distribution header whether the unit is in refrigeration or heating. In this way, problems such as poor pressure drop and poor oil return may occur during the refrigeration and heating conversion operation of the unit, and the stability of the regulation problem of the throttling device electronic expansion valve may also be affected. Summary of the Utility Model
[0003] The utility model provides a liquid equalizing structure of a condenser header during refrigeration and heating of an air-cooled heat pump unit, which can solve the problems pointed out in the background art.
[0004] A liquid equalizing structure of a condenser header during refrigeration and heating of an air-cooled heat pump unit includes a main pipe, a liquid distribution head, and a plurality of auxiliary liquid distribution pipes. The liquid distribution head is connected to the main pipe through the plurality of auxiliary liquid distribution pipes. A first branch pipe is connected to the main pipe, and a second branch pipe is connected to the liquid distribution head. An electromagnetic valve is provided on the second branch pipe, and the electromagnetic valve is connected to a liquid inlet pipe. The other end of the first branch pipe is connected to the liquid inlet pipe in the form of a tee, and a check valve is provided on the first branch pipe.
[0005] Preferably, the main pipe is a closed pipeline connected end to end.
[0006] Preferably, the main pipe includes an upper pipe, a lower pipe, and elbow pipes at both ends for connecting the upper pipe and the lower pipe to form a closed pipeline. The plurality of auxiliary liquid distribution pipes are connected to the upper pipe, the lower pipe is connected to the first branch pipe, and a plurality of connecting pipes are connected to the upper pipe.
[0007] Beneficial Effects: The utility model provides a liquid equalizing structure of a condenser header during refrigeration and heating of an air-cooled heat pump unit. By changing the combination form of the liquid inlet pipe / liquid distribution pipe of the condenser, the purpose of liquid equalization of the refrigerant during operation is achieved. This structure can effectively change the full utilization of the refrigerant in the system, improve the utilization effect of the refrigerant, reduce the pressure of the unit caused by the ineffective heat exchange of the refrigerant during the circulation process, and improve the stability and efficiency of the product unit. Description of the Drawings
[0008] Figure 1 It is a structural schematic diagram of the utility model,
[0009] Figure 2 It is a connection schematic diagram of the utility model and the outdoor unit condenser,
[0010] Description of the Reference Numerals:
[0011] Reference numerals in the figure: main pipe 1; upper pipe 11; lower pipe 12; liquid distribution head 2; auxiliary liquid distribution pipes 3; first branch pipe 4; second branch pipe 5; solenoid valve 6; liquid inlet pipe 7; check valve 8; connecting pipe 9; outdoor unit condenser 10; intake pipe 20. Specific implementation manner
[0012] The following will describe in detail a specific implementation manner of the present utility model in conjunction with the accompanying drawings. However, it should be understood that the protection scope of the present utility model is not limited by the specific implementation manner.
[0013] Example: As Figure 1-2 shown, a liquid equalizing structure for the condenser header of an air-cooled heat pump unit during refrigeration and heating provided by an embodiment of the present utility model includes a main pipe 1, a liquid distribution head 2, and a plurality of auxiliary liquid distribution pipes 3. The liquid distribution head 2 is connected to the main pipe 1 through a plurality of auxiliary liquid distribution pipes 3. A first branch pipe 4 is connected to the main pipe 1, and a second branch pipe 5 is connected to the liquid distribution head 2. A solenoid valve 6 is provided on the second branch pipe 5. The solenoid valve 6 is connected to a liquid inlet pipe 7. The other end of the first branch pipe 4 is connected to the liquid inlet pipe 7 in a tee form. A check valve 8 is provided on the first branch pipe 4.
[0014] In some embodiments, the main pipe 1 is a closed pipeline connected end to end. The main pipe 1 includes an upper pipe 11, a lower pipe 12, and elbows at both ends for connecting the upper pipe 11 and the lower pipe 12 to form a closed pipeline. A plurality of auxiliary liquid distribution pipes 3 are connected to the upper pipe 11. The lower pipe 12 is connected to the first branch pipe 4. A plurality of connecting pipes 9 are connected to the upper pipe 11. The plurality of connecting pipes 9 are connected to the outdoor unit condenser 10. The design of the closed pipeline can achieve the function of subcooling, and the liquid equalizing effect is relatively good during heating.
[0015] Working principle of the present utility model:
[0016] 1. Refrigeration of the unit
[0017] The high-temperature and high-pressure refrigerant gas discharged from the compressor enters the outdoor unit condenser 10 through the intake pipe 20 for heat exchange. The refrigerant enters the main pipe 1 through a plurality of connecting pipes 9. At this time, the solenoid valve 6 is in the closed state. The refrigerant directly flows through the main pipe 1, through the first branch pipe 4 where the check valve 6 is located, and the liquid inlet pipe 7 into the evaporator of the indoor unit for heat exchange. The refrigerant absorbs the heat of the air and undergoes a phase change to become gaseous, and is sucked into the compressor to complete a refrigeration cycle.
[0018] 2. Heating of the unit
[0019] When the unit needs to switch to the heating mode, the solenoid valve 6 will be in the open state along with the electromagnetic conversion of the four-way reversing valve. At this time, the outdoor unit condenser 10 serves as the evaporator. The refrigerant enters through the liquid inlet pipe 7 and flows reversely. Due to the one-way flow function of the check valve, after the refrigerant enters through the liquid inlet pipe 7, it enters the liquid distributor 2 through the solenoid valve 6 and the second branch pipe 5 for liquid distribution, enters the main pipe 1 through the auxiliary liquid distribution pipe 3, and then enters the outdoor unit condenser 10 through several connecting pipes 9. The refrigerant absorbs the heat of the air and undergoes a phase change to become gaseous, and then enters the indoor compressor again to complete a heating cycle.
[0020] According to the theoretical description, this structure changes the combination form of the liquid inlet pipe / liquid distribution pipe of the condenser by the opening and closing of the solenoid valve and the one-way flow function of the check valve to achieve the purpose of uniform liquid of the refrigerant during operation. Through this structure, not only can the occurrence of secondary throttling expansion during operation be avoided, but also the full utilization of the refrigerant in the system can be effectively changed, improving the utilization effect of the refrigerant. This can effectively play the utilization effect of the refrigerant cycle, reduce the pressure of the unit caused by the ineffective heat exchange of the refrigerant during the cycle, and improve the stability and efficiency of the product unit.
[0021] The above discloses only several specific embodiments of the present invention. However, the embodiments of the present invention are not limited thereto, and any changes that can be thought of by those skilled in the art should fall within the protection scope of the present invention.
Claims
1. A liquid equalizing structure for the condenser header of an air-cooled heat pump unit during refrigeration and heating, characterized in that: It includes a main pipe (1), a liquid distribution head (2) and several auxiliary liquid distribution pipes (3). The liquid distribution head (2) is connected to the main pipe (1) through the several auxiliary liquid distribution pipes (3). A first branch pipe (4) is connected to the main pipe (1), and a second branch pipe (5) is connected to the liquid distribution head (2). An electromagnetic valve (6) is provided on the second branch pipe (5), and the electromagnetic valve (6) is connected to a liquid inlet pipe (7). The other end of the first branch pipe (4) is connected to the liquid inlet pipe (7) in the form of a tee, and a check valve (8) is provided on the first branch pipe (4).
2. The liquid equalizing structure of the condenser header during refrigeration and heating of the air-cooled heat pump unit according to claim 1, wherein: The main pipe (1) is a closed pipeline connected end to end.
3. The uniform liquid distribution structure of the condenser header during refrigeration and heating of the air-cooled heat pump unit according to claim 2, wherein: The main pipe (1) includes an upper pipe (11) and a lower pipe (12) and elbow pipes at both ends for connecting the upper pipe (11) and the lower pipe (12) to form a closed pipeline. The several auxiliary liquid distribution pipes (3) are connected to the upper pipe (11), the lower pipe (12) is connected to the first branch pipe (4), and several connecting pipes (9) are connected to the upper pipe (11).