CN218936722U - Oil return and liquid storage structure of air conditioning system - Google Patents
Oil return and liquid storage structure of air conditioning system Download PDFInfo
- Publication number
- CN218936722U CN218936722U CN202223227640.5U CN202223227640U CN218936722U CN 218936722 U CN218936722 U CN 218936722U CN 202223227640 U CN202223227640 U CN 202223227640U CN 218936722 U CN218936722 U CN 218936722U
- Authority
- CN
- China
- Prior art keywords
- air
- liquid
- pipe
- air conditioning
- compressor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
The utility model discloses an oil return and liquid storage structure of an air conditioning system, which comprises an air conditioning host, a pump cabinet, a compressor, a gas-liquid separator, a liquid pipe, an air pipe and a plurality of air conditioning terminals; one end of the air conditioner main unit is connected with the tail ends of a plurality of air conditioners through a liquid pipe, and the other end of the air conditioner main unit is connected with the gas-liquid separator; the pump cabinet is connected with the compressor, and the gas-liquid separator is connected with the compressor in parallel; one end of the air pipe is arranged between the gas-liquid separator and the compressor, and the other end of the air pipe is respectively connected with the pump cabinet and the tail ends of the plurality of air conditioners; the air pipe section of the air pipe between the pump cabinet and the tail ends of the plurality of air conditioners is provided with a slope with an inclination angle of 1 DEG, and the height of the air pipe at the pump cabinet is lower than that of the air pipe at the tail ends of the plurality of air conditioners; lubricating oil can be efficiently and accurately conveyed back to the compressor, and the normal refrigeration effect of the air conditioner is not affected; meanwhile, excessive liquid refrigerant liquid is collected in the oil storage tank, and the oil storage tank is heated through the electric heating belt, so that the liquid refrigerant in the oil storage tank is evaporated and returned to the pipeline again.
Description
Technical Field
The utility model relates to the technical field of oil return and liquid storage of air conditioning systems, in particular to an oil return and liquid storage structure of an air conditioning system.
Background
In an air conditioning system with a host machine running at multiple ends, lubricating oil in a compressor enters various components in the air conditioning system along with refrigerant: for example, in the air pipe, the condenser, the liquid pipe and the evaporator, to ensure the normal operation of the compressor, to avoid the burning condition of the compressor caused by the oil shortage operation, it is necessary to ensure that the lubricating oil discharged along with the refrigerant can smoothly return to the compressor.
In addition, in a multi-split air conditioning system, especially in a machine room air conditioner, when a fault of a respective tail end occurs and the electronic expansion valve is not completely closed, the refrigerant in the tail end evaporator is not completely evaporated, and the suction operation of a compressor can easily occur, so that liquid impact is caused.
In a general one-to-many air conditioning system, an air oil separator is generally arranged at an air outlet of a compressor, and through primary or secondary separation, a refrigerant is efficiently separated from lubrication, most of lubricating oil is separated, and then the lubricating oil returns to the compressor through an oil return pipe connected to the air inlet of the compressor, so that oil return is realized. However, this method does not allow 100% oil to be separated and returned to the compressor, or to be discharged into the air conditioning system from a small amount of oil. Over time, the more lubricant is carried over to the system, and typically because of factors affecting the flow rate and solubility of the lubricant in the refrigerant, the lubricant is concentrated primarily in the evaporator to compressor suction line segment.
Disclosure of Invention
The utility model aims to solve the defects in the prior art and provides an oil return and liquid storage structure of an air conditioning system.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
an oil return and liquid storage structure of an air conditioning system comprises an air conditioning host, a pump cabinet, a compressor, a gas-liquid separator, a liquid pipe, an air pipe and a plurality of air conditioning terminals; one end of the air conditioner main unit is connected with the tail ends of the plurality of air conditioners through the liquid pipe, and the other end of the air conditioner main unit is connected with the gas-liquid separator; the pump cabinet is connected with the compressor, and the gas-liquid separator is connected with the compressor in parallel; one end of the air pipe is arranged between the gas-liquid separator and the compressor, and the other end of the air pipe is respectively connected with the pump cabinet and the tail ends of the plurality of air conditioners; the air pipe section of the air pipe between the pump cabinet and the tail ends of the plurality of air conditioners is provided with a slope with an inclination angle of 1 degree, and the height of the air pipe at the pump cabinet is lower than that of the air pipe at the tail ends of the plurality of air conditioners.
Preferably, the pump cabinet comprises a power pump, an oil storage tank, an electric heating belt, a liquid inlet pipe and a liquid outlet pipe; the power pump, the oil storage tank and the electric heating belt are all arranged in the pump cabinet, and the electric heating belt is arranged at the bottom of the oil storage tank; the power pump is connected with the oil storage tank; one end of the liquid inlet pipe is connected with the oil storage tank, and the other end of the liquid inlet pipe is arranged outside the pump cabinet; one end of the liquid outlet pipe is connected with the power pump, and the other end of the liquid outlet pipe is arranged outside the pump cabinet.
Preferably, a temperature sensor is arranged on the liquid inlet pipe.
Preferably, a liquid level sensor is arranged in the oil storage tank.
Preferably, pressure sensors are arranged in the liquid inlet pipe and the liquid outlet pipe.
Preferably, a one-way valve is arranged on the liquid outlet pipe.
Preferably, the liquid inlet pipe is connected with the plurality of air conditioner tail ends through the air pipe.
Preferably, the liquid outlet pipe is connected with the compressor through the air pipe.
Preferably, the temperature sensor is an NTC temperature sensor.
Preferably, a control board is further arranged in the pump cabinet, and the temperature sensor, the pressure sensor and the liquid level sensor are all connected with the control board.
Compared with the prior art, the utility model has the beneficial effects that:
the utility model designs an oil return and liquid storage structure of an air conditioning system, an NTC temperature sensor provides temperature judgment auxiliary conditions, a power pump provides oil transportation power, an oil storage tank provides oil storage and liquid storage capacity, a liquid level sensor is used for judging signals of opening and closing the power pump, and a one-way valve ensures that the delivered oil cannot flow back after the power pump stops working; the method comprises the steps that 1% of slope is arranged on an air pipe at the tail end during engineering installation, the lowest point of the pipeline is connected with an inlet of a pump cabinet, lubricating oil and liquid refrigerant are collected into an oil storage tank under the action of gravity, the lubricating oil is collected to a certain degree, and then the lubricating oil is conveyed back to an air suction port section pipeline of a compressor through a power pump, so that oil return is realized; in the process of collecting oil, evaporating the liquid refrigerant into gas by the heat of the electric heating belt, and returning the gas to the air pipe; the road bending resistance is not increased, and the normal refrigerating effect of the system is not affected.
Drawings
FIG. 1 is a schematic diagram of a structure according to the present utility model;
fig. 2 is a schematic diagram of the structure in the pump cabinet according to the present utility model.
Legend description:
1. an air conditioner main unit, 2, a pump cabinet,
3. a compressor, 4, a gas-liquid separator,
5. a liquid pipe, a 6 gas pipe,
7. the tail end of the air conditioner, 8, a slope,
21. a power pump, 22, an oil storage tank,
23. an electric heating belt, 24, a liquid inlet pipe,
25. a liquid outlet pipe, 241, a temperature sensor,
251. a one-way valve.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are based on directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element to be referred to must have a specific direction, be constructed and operated in the specific direction, and thus should not be construed as limiting the present utility model; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1 to 2, an oil return and liquid storage structure of an air conditioning system comprises an air conditioning host 1, a pump cabinet 2, a compressor 3, a gas-liquid separator 4, a liquid pipe 5, an air pipe 6 and a plurality of air conditioning terminals 7; one end of the air conditioner main unit 1 is connected with a plurality of air conditioner tail ends 7 through liquid pipes 5, and the other end of the air conditioner main unit 1 is connected with the gas-liquid separator 4; the pump cabinet 2 is connected with the compressor 3, and the gas-liquid separator 4 is connected with the compressor 3 in parallel; one end of an air pipe 6 is arranged between the gas-liquid separator 4 and the compressor 3, and the other end of the air pipe 6 is respectively connected with the pump cabinet 2 and a plurality of air conditioner terminals 7; the air pipe section of the air pipe 6 between the pump cabinet 2 and the plurality of air conditioner terminals 7 is provided with a slope 8 with an inclination angle of 1 DEG, and the height of the air pipe at the pump cabinet 2 is lower than that of the air pipe at the plurality of air conditioner terminals 7.
The pump cabinet 2 comprises a power pump 21, an oil storage tank 22, an electric heating belt 23, a liquid inlet pipe 24 and a liquid outlet pipe 25; the power pump 21, the oil storage tank 22 and the electric heating belt 23 are all arranged in the pump cabinet 2, and the electric heating belt 23 is arranged at the bottom of the oil storage tank 22; the power pump 21 is connected with the oil storage tank 22; one end of a liquid inlet pipe 24 is connected with the oil storage tank 22, and the other end of the liquid inlet pipe 24 is arranged outside the pump cabinet 2; one end of the liquid outlet pipe 25 is connected with the power pump 21, and the other end of the liquid outlet pipe 25 is arranged outside the pump cabinet 2.
The liquid inlet pipe 24 is provided with a temperature sensor 241, and the temperature sensor 241 is an NTC temperature sensor;
a liquid level sensor is arranged in the oil storage tank 22, pressure sensors are arranged in the liquid inlet pipe 24 and the liquid outlet pipe 25, a one-way valve 251 is arranged on the liquid outlet pipe 25, the liquid inlet pipe 24 is connected with a plurality of air conditioner tail ends 7 through air pipes 6, and the liquid outlet pipe 25 is connected with the compressor 3 through the air pipes 6; a control board is also arranged in the pump cabinet 2, and a temperature sensor 241, a pressure sensor and a liquid level sensor are all connected with the control board; the NTC temperature sensor 241 provides an auxiliary temperature judgment condition, the power pump 21 provides oil transportation power, the oil storage tank 22 provides oil storage and liquid storage capacity, the liquid level sensor is used for judging the on and off signals of the power pump 212, and the check valve 251 ensures that the oil delivered by the power pump 21 does not flow back after the power pump stops working.
The working principle of the utility model is as follows: the air conditioner is characterized in that a slope of 1% is arranged on an air pipe at the tail end of an air conditioner during engineering installation, the lowest point of the pipeline is connected with an inlet of a pump cabinet 2, lubricating oil and liquid refrigerant are collected into an oil storage tank 22 under the action of gravity to a certain extent, and then the lubricating oil is conveyed back to an air suction port section pipeline of a compressor 3 through a power pump 21, so that oil return is realized; in the process of collecting oil, the liquid refrigerant is evaporated into gas by the heat of the electric heating belt 23 and returned to the air pipe; the road bending resistance is not increased, and the normal refrigerating effect of the system is not affected.
The present utility model is not limited to the above-mentioned embodiments, and any person skilled in the art, based on the technical solution of the present utility model and the inventive concept thereof, can be replaced or changed within the scope of the present utility model.
Claims (10)
1. The oil return and liquid storage structure of the air conditioning system is characterized by comprising an air conditioning host, a pump cabinet, a compressor, a gas-liquid separator, a liquid pipe, an air pipe and a plurality of air conditioning terminals; one end of the air conditioner main unit is connected with the tail ends of the plurality of air conditioners through the liquid pipe, and the other end of the air conditioner main unit is connected with the gas-liquid separator; the pump cabinet is connected with the compressor, and the gas-liquid separator is connected with the compressor in parallel; one end of the air pipe is arranged between the gas-liquid separator and the compressor, and the other end of the air pipe is respectively connected with the pump cabinet and the tail ends of the plurality of air conditioners; the air pipe section of the air pipe between the pump cabinet and the tail ends of the plurality of air conditioners is provided with a slope with an inclination angle of 1 degree, and the height of the air pipe at the pump cabinet is lower than that of the air pipe at the tail ends of the plurality of air conditioners.
2. The oil return and storage structure of an air conditioning system according to claim 1, wherein the pump cabinet comprises a power pump, an oil storage tank, an electric heating belt, a liquid inlet pipe and a liquid outlet pipe; the power pump, the oil storage tank and the electric heating belt are all arranged in the pump cabinet, and the electric heating belt is arranged at the bottom of the oil storage tank; the power pump is connected with the oil storage tank; one end of the liquid inlet pipe is connected with the oil storage tank, and the other end of the liquid inlet pipe is arranged outside the pump cabinet; one end of the liquid outlet pipe is connected with the power pump, and the other end of the liquid outlet pipe is arranged outside the pump cabinet.
3. The oil return and storage structure of an air conditioning system according to claim 2, wherein a temperature sensor is provided on the liquid inlet pipe.
4. The oil return and storage structure of an air conditioning system according to claim 3, wherein a liquid level sensor is disposed in the oil storage tank.
5. The oil return and liquid storage structure of an air conditioning system according to claim 4, wherein pressure sensors are arranged in the liquid inlet pipe and the liquid outlet pipe.
6. The oil return and storage structure of an air conditioning system according to claim 2, wherein the liquid outlet pipe is provided with a one-way valve.
7. The oil return and liquid storage structure of an air conditioning system according to claim 2, wherein the liquid inlet pipe is connected with the plurality of air conditioning terminals through the air pipe.
8. The oil return and storage structure of an air conditioning system according to claim 2, wherein the liquid outlet pipe is connected to the compressor through the air pipe.
9. An oil return and storage structure for an air conditioning system according to claim 3, wherein the temperature sensor is an NTC temperature sensor.
10. The oil return and liquid storage structure of an air conditioning system according to claim 5, wherein a control board is further arranged in the pump cabinet, and the temperature sensor, the pressure sensor and the liquid level sensor are all connected with the control board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223227640.5U CN218936722U (en) | 2022-12-03 | 2022-12-03 | Oil return and liquid storage structure of air conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223227640.5U CN218936722U (en) | 2022-12-03 | 2022-12-03 | Oil return and liquid storage structure of air conditioning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218936722U true CN218936722U (en) | 2023-04-28 |
Family
ID=86062339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223227640.5U Active CN218936722U (en) | 2022-12-03 | 2022-12-03 | Oil return and liquid storage structure of air conditioning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218936722U (en) |
-
2022
- 2022-12-03 CN CN202223227640.5U patent/CN218936722U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108180680A (en) | Oil return control device, air conditioning system and oil return control method of air conditioning system | |
| CN111623558B (en) | Air conditioning system | |
| CN103604241B (en) | Air-conditioner and control method thereof | |
| CN112815584B (en) | Liquid filling and supplying system with low filling amount and oil return method thereof | |
| US20120017636A1 (en) | Refrigeration cycle apparatus | |
| CN107314579B (en) | Air conditioner | |
| CN110608501B (en) | Oil return control method for air conditioner and air conditioner | |
| CN111637668A (en) | Novel refrigerant is retrieved and is filled notes device | |
| CN103808070B (en) | Air conditioner | |
| CN203489553U (en) | Multi-hole-type gas-liquid separator | |
| CN218936722U (en) | Oil return and liquid storage structure of air conditioning system | |
| CN2591494Y (en) | Heat recovery device for multiple-air conditioner system | |
| CN218442847U (en) | Direct expansion type micro-power liquid full-filling and liquid-supplying refrigerating device | |
| CN111059806B (en) | Air conditioner host with oil separation function, air conditioner system and oil separation method | |
| CN112648754A (en) | Air conditioner circulating system and circulating method thereof | |
| JP2015158317A (en) | Air conditioning device | |
| CN209801850U (en) | Refrigeration compressor under low temperature environment and refrigerating system thereof | |
| CN209101597U (en) | Multi-split air conditioner circulating system and multi-split air conditioner | |
| CN216557747U (en) | Compressor assembly, air condensing units and air conditioning system | |
| CN207991036U (en) | Oil return control device and air conditioning system | |
| CN115900138A (en) | Oil return and liquid storage structure of air conditioning system and control method | |
| CN206281262U (en) | The gas-liquid separator of air-conditioning | |
| CN100516682C (en) | Air conditioner having oil equalizing function | |
| CN215809509U (en) | Big difference in height is with many online oil return systems | |
| CN219589187U (en) | Refrigerating system and equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |