Multi-split air conditioner outdoor unit capable of being rapidly filled with refrigerant oil and refrigerating system

Abstract

The utility model discloses a multi-split air conditioner outdoor unit and a refrigerating system capable of quickly filling refrigerant oil, which comprise a compressor mounted in the outdoor unit, a plurality of connecting copper pipes are uniformly arranged on an outlet of the compressor, one end of each connecting copper pipe is communicated with an oil separator, and the other end of each connecting copper pipe is communicated with an oil pump. An air outlet of the oil separator is communicated with an outdoor condenser through a pipeline, a liquid outlet of the outdoor condenser is communicated with a liquid stop valve through a pipeline, and one side of the liquid stop valve is communicated with refrigerant inlets of a plurality of indoor units; according to the multi-split air conditioner outdoor unit capable of rapidly filling refrigerant oil and the refrigerating system, the normally-closed gas bypass electromagnetic valve is arranged on the communicating pipeline of the oil separator and the gas-liquid separator, so that after the normally-closed gas bypass electromagnetic valve is opened, the refrigerant oil of the compressor can be simultaneously filled into the oil separator and the gas-liquid separator through the needle valve and the Y-shaped tee joint; and therefore, the convenience and the stability of the multi-split outdoor unit refrigerating system during use are effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air-conditioning refrigeration systems, in particular to a multi-split air-conditioning outdoor unit and a refrigeration system that can be quickly filled with refrigeration oil. Background Art

[0002] Due to the complex structure of the existing multi-split air-conditioning system, the compressor refrigerant oil needs to be filled twice from the high-pressure end and the low-pressure end during production. Since the existing technology does not have the function of quickly and accurately filling the compressor refrigerant oil and being able to fill it into the oil separator and the gas-liquid separator at the same time, the convenience and stability of the multi-split outdoor unit refrigeration system when using it still needs to be improved. To this end, we propose a multi-split air-conditioning outdoor unit and refrigeration system with quick refrigerant oil filling.

[0003] The above information disclosed in the Background section is only for enhancement of understanding of the background of the present disclosure and therefore it may include information that does not constitute the prior art that is already known to one of ordinary skill in the art. Utility Model Content

[0004] The utility model aims to provide a multi-split air-conditioner outdoor unit and a refrigeration system for quickly filling refrigeration oil, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a multi-split air-conditioning outdoor unit and a refrigeration system for quickly filling refrigeration oil, comprising a compressor installed in the outdoor unit, a plurality of connecting copper tubes are evenly arranged on the outlet of the compressor, one end of the connecting copper tube is connected with an oil separator, the air outlet of the oil separator is connected with an outdoor condenser through a pipeline, the liquid outlet of the outdoor condenser is connected with a liquid stop valve through a pipeline, one side of the liquid stop valve is connected with the refrigerant inlet of several indoor units, the inlet end of the compressor is connected with a gas-liquid separator through a pipeline, the inlet end of the gas-liquid separator is connected with a gas stop valve through a pipeline, the gas stop valve is connected with the refrigerant outlet of several indoor units, the outlet end of the oil separator is connected with the inlet end of the gas-liquid separator, and the connecting pipelines of the oil separator and the gas-liquid separator are respectively fixedly installed with a normally closed gas bypass solenoid valve, a Y-type three-way valve and a needle valve.

[0006] By adopting the above technical scheme, when the outdoor unit performs refrigeration work, the refrigerant of the outdoor unit can discharge high-temperature and high-pressure oil mist mixed refrigerant gas through the outlet of the compressor, and the refrigerant gas can enter the oil separator through several connecting copper tubes for oil mist separation, the lubricating oil can flow along the inner wall of the separator to the lubricating oil outlet end, the high-temperature and high-pressure refrigerant can enter the outdoor condenser for heat release and condensation, and the condensed liquid refrigerant can enter several indoor units through the liquid stop valve for evaporation and heat absorption, thereby realizing the refrigeration of each indoor unit, and the refrigerant can flow out of the indoor unit and can It then enters the compressor again through the gas shut-off valve, thereby realizing the refrigeration cycle. In addition, during the production of the outdoor unit of the multi-split air conditioner, the oil separator and the gas-liquid separator can be connected by starting the normally closed gas bypass solenoid valve. At this time, the compressor refrigerant oil can be filled through the needle valve interface. After the compressor refrigerant oil enters the needle valve, it can be introduced into the oil separator and the gas-liquid separator at the same time through the Y-type tee, so that the amount of compressor refrigerant oil filled in the oil separator and the gas-liquid separator is equal, thereby improving the accuracy of filling the compressor refrigerant oil and improving production efficiency.

[0007] Preferably, the gas-liquid separator is provided with a gas oil return hole.

[0008] By adopting the above technical solution, the gas-liquid separator can separate the oil mist from the high-temperature and high-pressure oil mist mixed refrigerant gas discharged from the compressor.

[0009] Preferably, the lubricating oil outlet hole of the oil separator is connected to an oil return capillary.

[0010] By adopting the above technical solution, the separated lubricating oil can be returned in a more efficient and energy-saving manner.

[0011] Preferably, one end of the oil return capillary is connected to the inlet pipe of the compressor.

[0012] By adopting the above technical solution, the refluxed lubricating oil can enter the compressor again.

[0013] Preferably, an electronic expansion valve is fixedly installed on the connecting pipe between the outdoor condenser and the liquid stop valve.

[0014] By adopting the above technical solution, the flow rate of the liquid refrigerant discharged from the outdoor condenser can be easily regulated.

[0015] Preferably, a one-way valve is fixedly installed on the connecting pipe between the outdoor condenser and the liquid stop valve.

[0016] By adopting the above technical solution, refrigerant backflow can be prevented.

[0017] In summary, the present application includes at least one of the following beneficial technical effects:

[0018] The multi-split air conditioner outdoor unit and refrigeration system for quick filling of refrigeration oil is provided with a normally closed gas bypass solenoid valve on the connecting pipe between the oil separator and the gas-liquid separator. After the normally closed gas bypass solenoid valve is opened, the compressor refrigeration oil can be simultaneously filled into the oil separator and the gas-liquid separator through the needle valve and the Y-type tee, thereby effectively improving the convenience and stability of the multi-split outdoor unit refrigeration system when in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a multi-split air conditioner outdoor unit and a refrigeration system for quick filling of refrigeration oil according to the utility model;

[0020] Figure 2 The utility model is a schematic diagram of the flow of refrigeration oil in the outdoor unit of a multi-split air conditioner and a refrigeration system for quickly filling refrigeration oil.

[0021] In the figure: 1. Compressor; 2. Connecting copper tube; 3. Oil separator; 4. Oil return capillary; 5. Needle valve; 6. Y-type tee; 7. Normally closed gas bypass solenoid valve; 8. Outdoor condenser; 9. Electronic expansion valve; 10. Check valve; 11. Liquid stop valve; 12. Gas stop valve; 13. Gas-liquid separator; 14. Gas separator oil return hole. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-Figure 2 , the utility model provides a technical solution: a multi-split air-conditioning outdoor unit and a refrigeration system for quickly filling refrigeration oil, comprising a compressor 1 installed in the outdoor unit;

[0024] Firstly, in order for the outdoor unit to discharge high-temperature and high-pressure oil mist mixed with refrigerant gas through the outlet of the compressor 1 when the outdoor unit performs refrigeration work, and the refrigerant gas can enter the oil separator 3 through several connecting copper tubes 2 for oil mist separation, the lubricating oil can flow along the inner wall of the separator to the lubricating oil outlet end, the high-temperature and high-pressure refrigerant can enter the outdoor condenser 8 for heat release and condensation, and the condensed liquid refrigerant can enter several indoor units through the liquid stop valve 11 for evaporation and heat absorption, thereby realizing the refrigeration of each indoor unit, and the refrigerant can enter the compressor 1 again through the gas stop valve 12 after flowing out of the indoor unit, thereby realizing the refrigeration cycle A multi-split air conditioner outdoor unit and refrigeration system for rapid filling of refrigeration oil, comprising a compressor 1 installed in the outdoor unit, a plurality of connecting copper tubes 2 are evenly arranged on the outlet of the compressor 1, one end of the connecting copper tube 2 is connected with an oil separator 3, the gas outlet of the oil separator 3 is connected with an outdoor condenser 8 through a pipeline, the liquid outlet of the outdoor condenser 8 is connected with a liquid stop valve 11 through a pipeline, one side of the liquid stop valve 11 is connected with the refrigerant inlet of a plurality of indoor units, the inlet end of the compressor 1 is connected with a gas-liquid separator 13 through a pipeline, the inlet end of the gas-liquid separator 13 is connected with a gas stop valve 12 through a pipeline, and the gas stop valve 12 is connected with the refrigerant outlet of a plurality of indoor units;

[0025] Secondly, in order to enable the oil separator 3 and the gas-liquid separator 13 to be in a connected state by starting the normally closed gas bypass solenoid valve 7 during the production of the multi-split air conditioner outdoor unit, the compressor 1 refrigerant oil can be filled through the needle valve 5 interface at this time, and after the compressor 1 refrigerant oil enters the needle valve 5, the compressor 1 refrigerant oil can be introduced into the oil separator 3 and the gas-liquid separator 13 through the Y-type three-way 6 at the same time, so that the amount of compressor 1 refrigerant oil filled in the oil separator 3 and the gas-liquid separator 13 is equivalent, thereby improving the accuracy of filling the compressor 1 refrigerant oil and improving the production efficiency; the outlet end of the oil separator 3 is connected with the inlet end of the gas-liquid separator 13, and the normally closed gas bypass solenoid valve 7, the Y-type three-way 6 and the needle valve 5 are fixedly installed on the connecting pipelines of the oil separator 3 and the gas-liquid separator 13 respectively;

[0026] Again, in order to facilitate the gas-liquid separator 13 to separate the oil mist of the high-temperature and high-pressure oil mist mixed refrigerant gas discharged from the compressor 1, a gas separation oil return hole 14 is provided on the gas-liquid separator 13; in order to enable the separated lubricating oil to be returned more efficiently and energy-saving, the lubricating oil outlet hole of the oil separator 3 is connected to the return oil capillary 4; in order to enable the refluxed lubricating oil to enter the compressor 1 again, one end of the return oil capillary 4 is connected to the inlet pipe of the compressor 1; in order to facilitate the flow regulation of the liquid refrigerant discharged from the outdoor condenser 8, an electronic expansion valve 9 is fixedly installed on the connecting pipe between the outdoor condenser 8 and the liquid stop valve 11; in order to prevent the refrigerant from flowing back, a one-way valve 10 is fixedly installed on the connecting pipe between the outdoor condenser 8 and the liquid stop valve 11.

[0027] According to the above technical scheme, the working steps of this scheme are summarized and sorted out: when the outdoor unit is performing refrigeration work, the refrigerant of the outdoor unit can discharge high-temperature and high-pressure oil mist mixed refrigerant gas through the outlet of the compressor 1, and the refrigerant gas can enter the oil separator 3 through several connecting copper tubes 2 for oil mist separation, the lubricating oil can flow along the inner wall of the separator to the lubricating oil outlet end, the high-temperature and high-pressure refrigerant can enter the outdoor condenser 8 for heat release and condensation, and the condensed liquid refrigerant can enter several indoor units through the liquid stop valve 11 for evaporation and heat absorption, thereby realizing the refrigeration of each indoor unit. After the refrigerant flows out of the indoor unit, it can enter the compressor 1 again through the gas stop valve 12, thereby realizing the refrigeration cycle; when the multi-split air conditioner outdoor unit is produced, the oil separator 3 and the gas-liquid separator 13 can be in a connected state by starting the normally closed gas bypass solenoid valve 7. At this time, the compressor 1 refrigerant oil can be filled through the needle valve 5 interface. After the compressor 1 refrigerant oil enters the needle valve 5, the compressor 1 refrigerant oil can be introduced into the oil separator 3 and the gas-liquid separator 13 at the same time through the Y-type tee 6, so that the amount of compressor 1 refrigerant oil filled in the oil separator 3 and the gas-liquid separator 13 is equivalent.

[0028] In summary: the multi-split air-conditioning outdoor unit and refrigeration system for quick filling of refrigerant oil sets a normally closed gas bypass solenoid valve 7 on the connecting pipe between the oil separator 3 and the gas-liquid separator 13, so that after the normally closed gas bypass solenoid valve 7 is opened, the refrigerant oil of the compressor 1 can be simultaneously filled into the oil separator 3 and the gas-liquid separator 13 through the needle valve 5 and the Y-type tee 6, thereby effectively improving the convenience and stability of the multi-split outdoor unit refrigeration system when in use.

[0029] Parts not involved in the present invention are the same as the prior art or can be implemented by the prior art. Although the embodiments of the present invention have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A multi-split air conditioner outdoor unit and refrigeration system for rapid filling of refrigeration oil, characterized in that: The invention comprises a compressor (1) installed in an outdoor unit, wherein a plurality of connecting copper tubes (2) are evenly arranged on the outlet of the compressor (1), one end of the connecting copper tube (2) is connected to an oil separator (3), the gas outlet of the oil separator (3) is connected to an outdoor condenser (8) through a pipeline, the liquid outlet of the outdoor condenser (8) is connected to a liquid stop valve (11) through a pipeline, one side of the liquid stop valve (11) is connected to the refrigerant inlet of a plurality of indoor units, and the inlet of the compressor (1) is connected to the refrigerant inlet of the indoor units. The outlet end is connected to a gas-liquid separator (13) through a pipeline, the inlet end of the gas-liquid separator (13) is connected to a gas stop valve (12) through a pipeline, the gas stop valve (12) is connected to the refrigerant outlets of a plurality of indoor units, the outlet end of the oil separator (3) is connected to the inlet end of the gas-liquid separator (13), and a normally closed gas bypass solenoid valve (7), a Y-type three-way valve (6) and a needle valve (5) are respectively fixedly installed on the connecting pipelines of the oil separator (3) and the gas-liquid separator (13).

2. A multi-split air conditioner outdoor unit and refrigeration system for rapid filling of refrigeration oil according to claim 1, characterized in that: The gas-liquid separator (13) is provided with a gas separation oil return hole (14).

3. A multi-split air conditioner outdoor unit and refrigeration system for rapid filling of refrigeration oil according to claim 1, characterized in that: The lubricating oil outlet hole of the oil separator (3) is connected to an oil return capillary tube (4).

4. A multi-split air conditioner outdoor unit and refrigeration system for rapid filling of refrigeration oil according to claim 3, characterized in that: One end of the oil return capillary tube (4) is in communication with the inlet pipe of the compressor (1).

5. A multi-split air conditioner outdoor unit and refrigeration system for rapid filling of refrigeration oil according to claim 1, characterized in that: An electronic expansion valve (9) is fixedly installed on the connecting pipe between the outdoor condenser (8) and the liquid stop valve (11).

6. A multi-split air conditioner outdoor unit and refrigeration system for rapid filling of refrigeration oil according to claim 5, characterized in that: A one-way valve (10) is fixedly installed on the connecting pipe between the outdoor condenser (8) and the liquid stop valve (11).

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