CN116067044A - Compressor assembly, air conditioner outdoor unit and air conditioning system - Google Patents

Compressor assembly, air conditioner outdoor unit and air conditioning system Download PDF

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Publication number
CN116067044A
CN116067044A CN202111284994.0A CN202111284994A CN116067044A CN 116067044 A CN116067044 A CN 116067044A CN 202111284994 A CN202111284994 A CN 202111284994A CN 116067044 A CN116067044 A CN 116067044A
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CN
China
Prior art keywords
return hole
oil return
gas
oil
pipe
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.)
Pending
Application number
CN202111284994.0A
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Chinese (zh)
Inventor
李宏伟
王命仁
谭志军
吴孔祥
蒋运鹏
丁云霄
张宇晟
李华勇
卢健洪
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GD Midea Heating and Ventilating Equipment Co Ltd
Hefei Midea Heating and Ventilating Equipment Co Ltd
Original Assignee
GD Midea Heating and Ventilating Equipment Co Ltd
Hefei Midea Heating and Ventilating Equipment Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by GD Midea Heating and Ventilating Equipment Co Ltd, Hefei Midea Heating and Ventilating Equipment Co Ltd filed Critical GD Midea Heating and Ventilating Equipment Co Ltd
Priority to CN202111284994.0A priority Critical patent/CN116067044A/en
Priority to PCT/CN2022/117115 priority patent/WO2023071536A1/en
Priority to EP22885426.1A priority patent/EP4354049A1/en
Publication of CN116067044A publication Critical patent/CN116067044A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B31/00—Compressor arrangements
    • F25B31/002—Lubrication
    • F25B31/004—Lubrication oil recirculating arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0003—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station characterised by a split arrangement, wherein parts of the air-conditioning system, e.g. evaporator and condenser, are in separately located units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/08—Compressors specially adapted for separate outdoor units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/08—Compressors specially adapted for separate outdoor units
    • F24F1/10—Arrangement or mounting thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B13/00—Compression machines, plants or systems, with reversible cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • F25B43/006—Accumulators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • F25B43/02—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat for separating lubricants from the refrigerant
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/07—Details of compressors or related parts
    • F25B2400/075—Details of compressors or related parts with parallel compressors

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Analytical Chemistry (AREA)
  • Power Engineering (AREA)
  • Compressor (AREA)

Abstract

The invention relates to a compressor assembly, an air conditioner outdoor unit and an air conditioner system, wherein the compressor assembly comprises a first compressor, a second compressor, a first oil separator, a second oil separator, a first gas-liquid separator, a second gas-liquid separator, a liquid balance pipe and a gas balance pipe, the first compressor is provided with a first air return port, the second compressor is provided with a second air return port, the first oil separator is provided with a first oil outlet, the second oil separator is provided with a second oil outlet, the first gas-liquid separator is provided with a first separation cavity, a first gas separation inlet, a first oil return hole and a first gas separation outlet, the second gas-liquid separator is provided with a second separation cavity, a second gas separation inlet, a second oil return hole and a second gas separation outlet, the first gas separation outlet and the first oil return hole are both communicated with a first air return port, the second gas separation outlet and the second oil return hole are both communicated with the first separation cavity and the second separation cavity, and the liquid balance pipe and the gas balance pipe are both communicated with the second air return port. The compressor assembly provided by the embodiment of the invention has the advantages of high reliability and the like.

Description

Compressor assembly, air conditioner outdoor unit and air conditioning system
Technical Field
The invention relates to the technical field of air conditioning equipment, in particular to a compressor assembly, an air conditioner outdoor unit and an air conditioning system.
Background
With the development of society and the progress of technology, the capacity of the multi-connected heat pump air conditioning system is increased. However, the multi-connected heat pump air conditioning system has the problems of insufficient gas separation volume, difficult recovery of the refrigerating oil and the like while the capacity is increased, and the development of the multi-connected heat pump air conditioning system is limited. In the related art, the capacity of the air conditioning system is enlarged by adopting a gas-division parallel connection mode, and the problem of poor operation reliability of the compressor is solved although the problem of insufficient gas-division capacity is solved.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems in the related art to some extent.
To this end, embodiments of the present invention provide a compressor assembly to improve operational reliability of a compressor.
The embodiment of the invention provides an air conditioner outdoor unit, which is used for improving the operation reliability of the air conditioner outdoor unit.
The embodiment of the invention provides an air conditioning system, which is used for improving the operation reliability of the air conditioning system.
The compressor assembly of an embodiment of the present invention includes:
a first compressor having a first discharge port and a first return port, and a second compressor having a second discharge port and a second return port;
a first oil separator having a first oil outlet and a first oil inlet in communication with the first exhaust port, and a second oil separator having a second oil outlet and a second oil inlet in communication with the second exhaust port;
a first gas-liquid separator having a first separation chamber and a first gas-fraction inlet, a first oil return hole and a first gas-fraction outlet communicating with the first separation chamber, and a second gas-liquid separator having a second separation chamber and a second gas-fraction inlet, a second oil return hole and a second gas-fraction outlet communicating with the second separation chamber, the first oil outlet communicating with the first gas-fraction inlet, the second oil outlet communicating with the second gas-fraction inlet, each of the first gas-fraction outlet and the first oil return hole communicating with the first air return port, each of the second gas-fraction outlet and the second oil return hole communicating with the second air return port; and
the liquid balance pipe and the gas balance pipe are positioned above the liquid balance pipe, each of one end of the liquid balance pipe and one end of the gas balance pipe is communicated with the first separation cavity, and each of the other end of the liquid balance pipe and the other end of the gas balance pipe is communicated with the second separation cavity.
The compressor assembly of the embodiment of the invention has the advantages of high operation reliability and the like.
In some embodiments, the first gas-liquid separator comprises:
a first cylinder defining the first separation chamber, and
the first air outlet pipe extends into the first separation cavity, the first oil return hole is formed in one part of the first air outlet pipe, and the first air separation outlet is formed in the other part of the first air outlet pipe;
the second gas-liquid separator includes:
a second cylinder defining a second separation chamber, an
The second air outlet pipe is provided with a second air outlet pipe, one part of the second air outlet pipe extends into the second separation cavity, the second oil return hole is formed in one part of the second air outlet pipe, and the second air separation outlet is formed in the other part of the second air outlet pipe;
the one end of the liquid balance pipe is located above the first oil return hole or the one end of the liquid balance pipe and the first oil return hole are located at the same height, and the other end of the liquid balance pipe is located above the second oil return hole or the other end of the liquid balance pipe and the second oil return hole are located at the same height.
In some embodiments, the portion of the first outlet pipe has a third oil return hole in communication with the first separation chamber, and the portion of the second outlet pipe has a fourth oil return hole in communication with the second separation chamber, wherein the third oil return hole is located above the first oil return hole or the third oil return hole and the first oil return hole are located at the same height, and the fourth oil return hole is located above the second oil return hole or the fourth oil return hole and the second oil return hole are located at the same height.
In some embodiments, the one end of the liquid balance pipe is located between the first oil return hole and the third oil return hole in the up-down direction, and the other end of the liquid balance pipe is located between the second oil return hole and the fourth oil return hole in the up-down direction.
In some embodiments, the one end of the gas balance pipe is located above the third oil return hole or the one end of the gas balance pipe and the third oil return hole are located at the same height, and the other end of the gas balance pipe is located above the fourth oil return hole or the other end of the gas balance pipe and the fourth oil return hole are located at the same height.
In some embodiments, the third oil return hole is located between the one end of the gas balance pipe and the one end of the liquid balance pipe in the up-down direction, and the fourth oil return hole is located between the other end of the gas balance pipe and the other end of the liquid balance pipe in the up-down direction.
In some embodiments, the first oil return hole and the second oil return hole are located at the same height; and/or
The bottom wall surface of the first separation cavity and the bottom wall surface of the second separation cavity are located at the same height, one end of the liquid balance pipe and the other end of the liquid balance pipe are located at the same height, and one end of the gas balance pipe and the other end of the gas balance pipe are located at the same height.
In some embodiments, the third oil return hole and the fourth oil return hole are located at the same height.
In some embodiments, each of the portion of the first outlet duct and the portion of the second outlet duct comprises a U-shaped portion comprising:
a first section and a second section, each of the first section and the second section extending in an up-down direction; and
one end of the middle section is connected with the lower end of the first section, and the other end of the middle section is connected with the lower end of the second section;
the first oil return hole is formed in the middle section of the first air outlet pipe, the third oil return hole is formed in the first section of the first air outlet pipe, the second oil return hole is formed in the middle section of the second air outlet pipe, and the fourth oil return hole is formed in the first section of the second air outlet pipe.
An air conditioner outdoor unit according to an embodiment of the present invention includes:
the four-way valve comprises a first interface, a second interface, a third interface and a fourth interface;
the first port of the outdoor heat exchanger is connected with the first interface; and
a compressor assembly according to any one of the above embodiments of the present invention, wherein the first oil separator has a first oil outlet, the second oil separator has a second oil outlet, each of the first oil outlet and the second oil outlet is connected to the second port, and each of the first air inlet and the second air inlet is connected to the fourth port.
The air conditioner outdoor unit of the embodiment of the invention has the advantages of high operation reliability and the like.
An air conditioning system according to an embodiment of the present invention includes:
an air-conditioning outdoor unit according to any one of the embodiments of the present invention; and
the indoor unit of the air conditioner comprises an indoor heat exchanger, a second port of the outdoor heat exchanger is connected with a first port of the indoor heat exchanger, and a second port of the indoor heat exchanger is connected with a third port.
The air conditioning system of the embodiment of the invention has the advantages of high operation reliability and the like.
Drawings
Fig. 1 is a schematic view illustrating a structure of an outdoor unit of an air conditioner according to an embodiment of the present invention.
Fig. 2 is an enlarged view at a in fig. 1.
Fig. 3 is a schematic view illustrating an outdoor unit of an air conditioner according to another embodiment of the present invention.
Reference numerals:
an air conditioner outdoor unit 100;
a first compressor 1; a first exhaust port 101; a first return port 102;
a second compressor 2; a second exhaust port 201; a second return port 202;
a first oil separator 3; a first oil inlet 301; first oil outlet 302; a first oil outlet 303;
a second oil separator 4; a second oil inlet 401; a second oil outlet 402; a second oil outlet 403;
a first gas-liquid separator 5; a first cylinder 501; a first separation chamber 5011; a first outlet duct 502; a first gas separation outlet 5021; a first oil return hole 5022; a third oil return hole 5023; a first intake pipe 503; a first air separation inlet 5031;
a second gas-liquid separator 6; a second cylinder 601; a second separation chamber 6011; a second outlet pipe 602; a second gas separation outlet 6021; a second oil return hole 6022; a fourth oil return hole 6023; a second intake pipe 603; a second gas separation inlet 6031;
a liquid balance pipe 7; a first end 701; a second end 702; a first tube segment 703; a second pipe segment 704; a third tube segment 705;
a gas balance pipe 8; a third end 801; a fourth end 802;
a four-way valve 9; a first interface 901; a second interface 902; a third interface 903; a fourth interface 904;
an outdoor heat exchanger 10; a first port 1001; a second port 1002;
a first pipe 11; a second tube 12; a third pipe 13; a fourth pipe 14; a fifth pipe 15; a sixth tube 16; a seventh pipe 17; an eighth pipe 18; a ninth pipe 19; a tenth pipe 20; an eleventh pipe 21; a twelfth pipe 22; thirteenth tube 23.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
A compressor assembly according to an embodiment of the present invention is described below with reference to the accompanying drawings.
As shown in fig. 1 to 3, the compressor assembly of the embodiment of the present invention includes a first compressor 1, a second compressor 2, a first oil separator 3, a second oil separator 4, a first gas-liquid separator 5, a second gas-liquid separator 6, a liquid balance pipe 7, and a gas balance pipe 8.
The first compressor 1 has a first discharge port 101 and a first return port 102, and the second compressor 2 has a second discharge port 201 and a second return port 202. The first oil separator 3 has a first oil outlet 302 and a first oil inlet 301 communicating with the first exhaust port 101, and the second oil separator 4 has a second oil outlet 402 and a second oil inlet 401 communicating with the second exhaust port 201.
The first gas-liquid separator 5 has a first separation chamber 5011, a first gas separation inlet 5031, a first oil return hole 5022, and a first gas separation outlet 5021 that communicate with the first separation chamber 5011. The second gas-liquid separator 6 has a second separation chamber 6011, a second gas-separation inlet 6031, a second oil return hole 6022, and a second gas-separation outlet 6021 that communicate with the second separation chamber 6011. First oil outlet 302 communicates with first air split inlet 5031, and second oil outlet 402 communicates with second air split inlet 6031. Each of the first gas-dividing outlet 5021 and the first oil return hole 5022 communicates with the first gas return port 102. Each of the second gas-separation outlet 6021 and the second oil return hole 6022 communicates with the second gas return port 202.
The gas balance pipe 8 is located above the liquid balance pipe 7. It will be understood by those skilled in the art that the gas balance pipe 8 described herein is located above the liquid balance pipe 7 means that the gas balance pipe 8 is located above the liquid balance pipe 7 when the first gas-liquid separator 5 and the second gas-liquid separator 6 are in use.
Each of one end of the liquid balance pipe 7 and one end of the air balance pipe 8 communicates with the first separation chamber 5011, and each of the other end of the liquid balance pipe 7 and the other end of the air balance pipe 8 communicates with the second separation chamber 6011. For example, as shown in fig. 1 to 3, the liquid balance tube 7 has a first end 701 and a second end 702 opposed in the longitudinal direction thereof, the gas balance tube 8 has a third end 801 and a fourth end 802 opposed in the longitudinal direction thereof, each of the first end 701 and the third end 801 communicates with the first separation chamber 5011, and each of the second end 702 and the fourth end 802 communicates with the second separation chamber 6011.
Thereby, communication of the first separation chamber 5011 and the second separation chamber 6011 can be achieved by the liquid balance pipe 7 and the gas balance pipe 8, thereby achieving liquid balance and gas balance between the first separation chamber 5011 and the second separation chamber 6011.
When the compressor assembly according to the embodiment of the present invention is operated, refrigerant vapor containing refrigerant oil (first oil-containing refrigerant vapor) flowing out from the first discharge port 101 of the first compressor 1 enters the first oil separator 3 through the first oil inlet 301, and the first oil-containing refrigerant vapor is separated into the first refrigerant vapor and the first refrigerant oil in the first oil separator 3. The first refrigeration oil enters the first separation cavity 5011 of the first gas-liquid separator 5 through the first oil outlet 302 and the first gas inlet 5031, and the first refrigerant steam enters the indoor heat exchanger for heat exchange. Meanwhile, refrigerant vapor containing refrigerant oil (second oil-containing refrigerant vapor) flowing out from the second discharge port 201 of the second compressor 2 enters the second oil separator 4 through the second oil inlet 401, and the second oil-containing refrigerant vapor is separated into the second refrigerant vapor and the second refrigerant oil in the second oil separator 4. The second refrigerant oil enters the second separation chamber 6011 of the second gas-liquid separator 6 through the second oil outlet 402 and the second gas-separation inlet 6031, and the second refrigerant vapor enters the indoor heat exchanger for heat exchange.
In addition, a part of the refrigerant (third refrigerant) flowing out of the indoor heat exchanger, which is required to be returned to the first compressor 1 and the second compressor 2, enters the first separation chamber 5011 of the first gas-liquid separator 5 through the first gas separation inlet 5031; another part of the refrigerant (fourth refrigerant) flowing out of the indoor heat exchanger, which needs to be returned to the first compressor 1 and the second compressor 2, enters the second separation chamber 6011 of the second gas-liquid separator 6 through the second gas-separation inlet 6031.
Then, during the suction process of the first compressor 1 (the third refrigerant and the fourth refrigerant), the refrigerant oil in the first separation chamber 5011 can be returned to the first compressor 1 along with the refrigerant vapor through the first oil return hole 5022, the first gas separation outlet 5021, and the first gas return port 102; during the suction of the second compressor 2 (the third refrigerant and the fourth refrigerant), the refrigerant oil in the second separation chamber 6011 can be returned to the second compressor 2 along with the refrigerant vapor through the second oil return hole 6022, the second gas separation outlet 6021, and the second gas return port 202. Thereby realizing the recovery of the refrigerating oil in the first compressor 1 and the second compressor 2.
For a compressor assembly that returns oil through a gas-liquid separator, the oil return of the compressor has the following relationship with the suction of the compressor: the oil return amount of the compressor increases with the increase of the air suction amount of the compressor, and the oil return amount of the compressor decreases with the decrease of the air suction amount of the compressor. Therefore, when compressors with different capacities are used in the same system, if the deviation of the suction amounts of the compressors with different capacities is too large (exceeds the design deviation), the deviation of the amount of refrigerating oil returned to the compressors along with the refrigerant vapor during the suction process of the compressors is also large, so that the problem that part of the compressors (usually the compressors with small capacities) have insufficient oil return and even cannot return oil is caused.
In the related art, the capacity of the air conditioning system is enlarged in a gas-separation parallel connection mode, so that the problem of insufficient gas-separation capacity is solved, but the problem of recycling the refrigerating oil cannot be solved, and the problems of untimely oil return and incapability of oil return of a large amount of oil exist, so that the operation reliability of the compressor is poor.
In the compressor assembly of the embodiment of the invention, the first separation cavity 5011 of the first gas-liquid separator 5 and the second separation cavity 6011 of the second gas-liquid separator 6 are communicated through the liquid balance pipe 7 and the gas balance pipe 8, so that both the first separation cavity 5011 of the first gas-liquid separator 5 and the second separation cavity 6011 of the second gas-liquid separator 6 can be ensured to have frozen oil and refrigerant. It is thereby possible to reduce or even avoid a large deviation in refrigerant distribution at the first gas-liquid inlet 5031 of the first gas-liquid separator 5 and the second gas-liquid inlet 6031 of the second gas-liquid separator 6 due to the difference in capacity between the first compressor 1 and the second compressor 2 (extremely large amount of refrigerant at the gas-liquid inlet of the gas-liquid separator corresponding to the large-capacity compressor, extremely small amount of refrigerant at the gas-liquid inlet of the gas-liquid separator corresponding to the small-capacity compressor). Further, the problems of insufficient oil return or incapability of oil return of the small-capacity compressor caused by the different capacities of the first compressor 1 and the second compressor 2 can be reduced or even avoided. The compressor abrasion caused by untimely oil return or incapability of oil return of the compressor due to lack of lubrication is avoided, and the reliability of a compressor assembly is greatly improved.
Therefore, the compressor assembly provided by the embodiment of the invention has the advantages of high reliability and the like.
In addition, each compressor of the embodiments of the present invention has an oil separator and a gas-liquid separator corresponding thereto, so that each compressor may form a set of relatively independent refrigeration oil circulation systems.
Alternatively, as shown in fig. 1 and 2, the compressor assembly includes a first pipe 11, a second pipe 12, a third pipe 13, a fourth pipe 14, a fifth pipe 15, and a sixth pipe 16. Wherein the first exhaust port 101 communicates with the first oil inlet 301 through the first pipe 11, and the second exhaust port 201 communicates with the second oil inlet 401 through the second pipe 12. The first oil outlet 302 communicates with the first air-split inlet 5031 through the fifth pipe 15, and the second oil outlet 402 communicates with the second air-split inlet 6031 through the sixth pipe 16. The first gas-dividing outlet 5021 communicates with the first gas-returning port 102 through the third pipe 13, and the second gas-dividing outlet 6021 communicates with the second gas-returning port 202 through the fourth pipe 14.
In some embodiments, as shown in fig. 1-3, the first gas-liquid separator 5 includes a first cylinder 501 and a first outlet duct 502, the first cylinder 501 defining a first separation chamber 5011, a portion of the first outlet duct 502 extending into the first separation chamber 5011. The first oil return hole 5022 is disposed at a portion of the first air outlet pipe 502, and the first air outlet 5021 is disposed at another portion of the first air outlet pipe 502.
For example, the first outlet duct 502 includes a first portion that extends into the first separation chamber 5011 and a second portion that is located outside of the first separation chamber 5011. The first oil return hole 5022 is disposed at a first portion of the first air outlet pipe 502, and the first air outlet 5021 is disposed at a second portion of the first air outlet pipe 502.
The second gas-liquid separator 6 includes a second cylinder 601 and a second gas outlet pipe 602, the second cylinder 601 defining a second separation chamber 6011, and a portion of the second gas outlet pipe 602 extending into the second separation chamber 6011. The second oil return hole 6022 is provided at a portion of the second air outlet pipe 602, and the second air outlet 6021 is provided at another portion of the second air outlet pipe 602.
For example, second outlet tube 602 includes a first portion that extends into second separation chamber 6011 and a second portion that is located outside of second separation chamber 6011. The second oil return hole 6022 is provided at a first portion of the second air outlet pipe 602, and the second air outlet 6021 is provided at a second portion of the second air outlet pipe 602.
Wherein, one end of the liquid balance pipe 7 is located above the first oil return hole 5022 or one end of the liquid balance pipe 7 and the first oil return hole 5022 are located at the same height; the other end of the liquid balance pipe 7 is located above the second oil return hole 6022 or the other end of the liquid balance pipe 7 and the second oil return hole 6022 are located at the same height.
As will be appreciated by those skilled in the art, when the first gas-liquid separator 5 and the second gas-liquid separator 6 are in the use state, one end of the liquid balance pipe 7 is located above the first oil return hole 5022 or one end of the liquid balance pipe 7 and the first oil return hole 5022 are located at the same height; the other end of the liquid balance pipe 7 is located above the second oil return hole 6022 or the other end of the liquid balance pipe 7 and the second oil return hole 6022 are located at the same height.
For example, as shown in fig. 1 and 2, the bottom wall surface of the first separation chamber 5011 and the bottom wall surface of the second separation chamber 6011 are located at the same level, the distance between the first end 701 (e) of the liquid equilibrium tube 7 and the bottom wall surface of the first separation chamber 5011 is L1, the distance between the first oil return hole 5022 (a) and the bottom wall surface of the first separation chamber 5011 is L2, the distance between the second end 702 (f) of the liquid equilibrium tube 7 and the bottom wall surface of the second separation chamber 6011 is L3, and the distance between the second oil return hole 6022 (c) and the bottom wall surface of the second separation chamber 6011 is L4, where L1 is equal to or greater than L2 and L3 is equal to or greater than L4.
Thus, in the case where the liquid level of the frozen oil in the first separation chamber 5011 is not lower than the first oil return hole 5022, the frozen oil in the first separation chamber 5011 can enter the second separation chamber 6011 through the liquid balance pipe 7; in the case where the liquid level of the refrigerant oil in the second separation chamber 6011 is not lower than the second oil return hole 6022, the refrigerant oil in the second separation chamber 6011 can enter the first separation chamber 5011 through the liquid balance pipe 7. Thus, the refrigerant oil in the first separation chamber 5011 preferentially returns to the first compressor 1, and the refrigerant oil in the first separation chamber 5011 can enter the second separation chamber 6011 to provide refrigerant oil for the second compressor 2 under the condition of ensuring that the first compressor 1 returns to the oil, and the refrigerant oil in the second separation chamber 6011 preferentially returns to the second compressor 2, and the refrigerant oil in the second separation chamber 6011 can enter the first separation chamber 5011 to provide refrigerant oil for the first compressor 1 under the condition of ensuring that the second compressor 2 returns to the oil. Thereby facilitating further improvement in reliability of the compressor assembly.
Optionally, the first gas-liquid separator 5 includes a first gas inlet pipe 503, a portion of the first gas inlet pipe 503 extends into the first separation chamber 5011, and a first gas separation inlet 5031 is provided at a portion of the first gas inlet pipe 503. The second gas-liquid separator 6 includes a second gas inlet pipe 603, the second gas inlet pipe 603 extends into the second separation chamber 6011, a portion of the second gas inlet pipe 603 extends into the second separation chamber 6011, and a second gas separation inlet 6031 is provided in a portion of the second gas inlet pipe 603.
Wherein the first intake pipe 503 and the first oil outlet 302 communicate through the fifth pipe 15, and the second intake pipe 603 and the second oil outlet 402 communicate through the sixth pipe 16.
Alternatively, one end of the liquid balance pipe 7 protrudes into the inside of the first cylinder 501 so that one end of the liquid balance pipe 7 communicates with the first separation chamber 5011. The other end of the liquid balance pipe 7 extends into the second cylinder 601 so that the other end of the liquid balance pipe 7 communicates with the second separation chamber 6011.
For example, as shown in fig. 1 to 3, the first end 701 of the liquid balance tube 7 protrudes into the first cylinder 501, and the second end 702 of the liquid balance tube 7 protrudes into the second cylinder 601.
In some embodiments, the first oil return hole 5022 and the second oil return hole 5023 are located at the same height.
For example, when the bottom wall surface of the first separation chamber 5011 and the bottom wall surface of the second separation chamber 6011 are located at the same level, l2=l4 described above.
Thereby, the problem of large refrigerant distribution deviation due to the difference in capacity of the first compressor 1 and the second compressor 2 can be further reduced or even avoided, which is advantageous for further improving the reliability of the compressor assembly.
Alternatively, each of the liquid balance pipe 7 and the gas balance pipe 8 is a straight pipe.
For example, as shown in fig. 1 and 2, the liquid balance pipe 7 is a straight pipe, the connection port of the liquid balance pipe 7 to the first gas-liquid separator 5 is e, the connection ports of the liquid balance pipe 7 to the second gas-liquid separator 6 are f, e, and f equal in height, and each of the first end 701 of the liquid balance pipe 7 and the second end 702 of the liquid balance pipe 7 is equal in height to the connection port e (connection port f).
Optionally, at least one of the liquid balance tube 7 and the gas balance tube 8 is an elbow.
For example, as shown in fig. 3, the liquid balance pipe 7 includes a first pipe segment 703, a second pipe segment 704, and a third pipe segment 705, the second pipe segment 704 being disposed horizontally, each of the first pipe segment 703 and the third pipe segment 705 being disposed obliquely, one end of the second pipe segment 704 being connected to a lower end of the first pipe segment 703, and the other end of the second pipe segment 704 being connected to a lower end of the third pipe segment 705.
Two ends of the second pipe section 704 are respectively connected with the first gas-liquid separator 5 and the second gas-liquid separator 6, the connection port of the second pipe section 704 and the first gas-liquid separator 5 is e2, and the connection port of the second pipe section 704 and the second gas-liquid separator 6 is f2. The first pipe section 703 extends into the first separation chamber 5011, the third pipe section 705 extends into the second separation chamber 6011, and an end e1 of the first pipe section 703, which is far away from the second pipe section 704, is a first end 701 of the liquid balance pipe 7, and an end f1 of the third pipe section 705, which is far away from the second pipe section 704, is a second end 702 of the liquid balance pipe 7. At this time, the connection ports e2 and e1 are located at different heights, and the connection ports f2 and f1 are located at different heights.
In some embodiments, a portion of the first outlet pipe 502 has a third oil return hole 5023 in communication with the first separation chamber 5011 and a portion of the second outlet pipe 602 has a fourth oil return hole 6023 in communication with the second separation chamber 6011. Wherein, the third oil return hole 5023 is located above the first oil return hole 5022 or the third oil return hole 5023 and the first oil return hole 5022 are located at the same height, and the fourth oil return hole 6023 is located above the second oil return hole 6022 or the fourth oil return hole 6023 and the second oil return hole 6022 are located at the same height.
For example, as shown in fig. 1 to 3, when the bottom wall surface of the first separation chamber 5011 and the bottom wall surface of the second separation chamber 6011 are located at the same height, the distance between the third oil return hole 5023 (b) and the bottom wall surface of the first separation chamber 5011 is L5, and the distance between the fourth oil return hole 6023 (d) and the bottom wall surface of the second separation chamber 6011 is L6, where L5 is equal to or greater than L2 and L6 is equal to or greater than L4.
Thus, when the oil of the first compressor 1 is not timely returned through the first oil return hole 5022 or the oil cannot be returned due to the first oil return hole 5022, the oil of the first compressor 1 can be returned through the third oil return hole 5023, and when the oil of the second compressor 2 is not timely returned through the second oil return hole 6022 or the oil cannot be returned due to the second oil return hole 6022, the oil of the second compressor 2 can be returned through the fourth oil return hole 6023. Therefore, the abrasion of the compressor caused by untimely oil return or incapability of oil return due to lack of lubrication of the compressor can be further avoided, and the reliability of the compressor assembly is further improved.
In some embodiments, one end of the liquid balance pipe 7 is located between the first oil return hole 5022 and the third oil return hole 5023 in the up-down direction, and the other end of the liquid balance pipe 7 is located between the second oil return hole 6022 and the fourth oil return hole 6023 in the up-down direction.
For example, as shown in FIGS. 1 to 3, when the bottom wall surface of the first separation chamber 5011 and the bottom wall surface of the second separation chamber 6011 are located at the same level, L5. Gtoreq.L1. Gtoreq.L2, and L6. Gtoreq.L3. Gtoreq.L4 are located.
Thereby, the reliability of the compressor assembly is further improved.
In some embodiments, the third oil gallery 5023 and the fourth oil gallery 6023 are located at the same height.
For example, when the bottom wall surface of the first separation chamber 5011 and the bottom wall surface of the second separation chamber 6011 are located at the same level, l5=l6 described above.
Thereby, the problem of large refrigerant distribution deviation due to the difference in capacity of the first compressor 1 and the second compressor 2 can be further reduced or even avoided, which is advantageous for further improving the reliability of the compressor assembly.
In some embodiments, one end of the gas balance pipe 8 is located above the third oil return hole 5023 or one end of the gas balance pipe 8 and the third oil return hole 5023 are located at the same height, and the other end of the gas balance pipe 8 is located above the fourth oil return hole 6023 or the other end of the gas balance pipe 8 and the fourth oil return hole 6023 are located at the same height.
For example, as shown in fig. 1 to 3, when the bottom wall surface of the first separation chamber 5011 and the bottom wall surface of the second separation chamber 6011 are located at the same height, the distance between one end (g) of the gas balance pipe 8 and the bottom wall surface of the first separation chamber 5011 is L7, L7 is equal to or greater than L5, and the distance between the other end (h) of the gas balance pipe 8 and the bottom wall surface of the second separation chamber 6011 is L8, L8 is equal to or greater than L6.
Therefore, the compressor assembly of the embodiment of the invention can better utilize the gas balance pipe 8 to realize the gas balance in the first separation cavity 5011 and the second separation cavity 6011, and further utilize the liquid balance pipe 7 to realize the liquid balance in the first separation cavity 5011 and the second separation cavity 6011, thereby being beneficial to further improving the reliability of the compressor assembly.
In some embodiments, the third oil return hole 5023 is located between one end of the gas balance tube 8 and one end of the liquid balance tube 7 in the up-down direction, and the fourth oil return hole 6023 is located between the other end of the gas balance tube 8 and the other end of the liquid balance tube 7 in the up-down direction.
For example, when the bottom wall surface of the first separation chamber 5011 and the bottom wall surface of the second separation chamber 6011 are located at the same level, L7 > L5 > L1 and L8 > L6 > L2.
Thereby, the reliability of the compressor assembly is further improved.
In some embodiments, the bottom wall surface of the first separation chamber 5011 and the bottom wall surface of the second separation chamber 6011 are at the same level. One end of the liquid balance pipe 7 and the other end of the liquid balance pipe 7 are positioned at the same height. In other words, the liquid balance pipe 7 is horizontally disposed. One end of the air balance pipe 8 and the other end of the air balance pipe 8 are positioned at the same height. In other words, the air balance pipe 8 is horizontally disposed.
Therefore, when the compressor assembly is assembled, only the bottom wall surface of the first separation cavity 5011 and the bottom wall surface of the second separation cavity 6011 are required to be positioned at the same mounting height, so that the assembly of the compressor assembly is convenient.
In some embodiments, each of a portion of first outlet duct 502 and a portion of second outlet duct 602 includes a U-shaped portion.
The U-shaped portion includes a first section, a second section, and an intermediate section, each of the first section and the second section extending in an up-down direction, one end of the intermediate section being connected to a lower end of the first section, and the other end of the intermediate section being connected to a lower end of the second section.
Wherein, the first oil return hole 5022 is disposed on the middle section of the first air outlet pipe 502, the third oil return hole 5023 is disposed on the first section of the first air outlet pipe 502, the second oil return hole 6022 is disposed on the middle section of the second air outlet pipe 602, and the fourth oil return hole 6023 is disposed on the first section of the second air outlet pipe 602.
An air conditioner outdoor unit 100 according to an embodiment of the present invention is described below with reference to the accompanying drawings.
As shown in fig. 1 to 3, an air conditioner outdoor unit 100 according to an embodiment of the present invention includes a four-way valve 9, an outdoor heat exchanger 10, and a compressor assembly.
The four-way valve 9 includes a first port 901, a second port 902, a third port 903, and a fourth port 904. The first port 1001 of the outdoor heat exchanger 10 is connected to the first port 901.
The compressor assembly is the compressor assembly of any one of the embodiments described above. The first oil separator 3 has a first oil outlet 303, the second oil separator 4 has a second oil outlet 403, and each of the first oil outlet 303 and the second oil outlet 403 is connected to a second port 902. Each of the first air component inlet 5031 and the second air component inlet 6031 is connected to the fourth interface 904.
Therefore, the air conditioner outdoor unit 100 according to the embodiment of the invention has advantages of high operation reliability and the like.
Alternatively, the air conditioner outdoor unit 100 includes a seventh pipe 17, an eighth pipe 18, a ninth pipe 19, a tenth pipe 20, and an eleventh pipe 21. Each of the first intake pipe 503 and the second intake pipe 603 is connected to a fourth interface 904 through a seventh pipe 17. One end of the eighth pipe 18 is connected to the first oil outlet 303, one end of the ninth pipe 19 is connected to the second oil outlet 403, and each of the other end of the eighth pipe 18 and the other end of the ninth pipe 19 is connected to the second port 902 through the tenth pipe 20. The first port 1001 of the outdoor heat exchanger 10 is connected to the first port 901 through the eleventh pipe 21.
An air conditioning system according to an embodiment of the present invention is described below with reference to the accompanying drawings.
The air conditioning system comprises an air conditioning outdoor unit and an air conditioning indoor unit. The air conditioner outdoor unit is the air conditioner outdoor unit 100 according to any one of the above embodiments, and the air conditioner indoor unit includes an indoor heat exchanger, the second port 1002 of the outdoor heat exchanger 10 is connected to the first port of the indoor heat exchanger, and the second port of the indoor heat exchanger is connected to the third port 903.
Therefore, the air conditioning system provided by the embodiment of the invention has the advantages of high operation reliability and the like.
Optionally, the air conditioning system comprises a twelfth duct 22 and a thirteenth duct 23. The second port 1002 of the outdoor heat exchanger 10 is connected to the first port of the indoor heat exchanger through the twelfth pipe 22, and the second port of the indoor heat exchanger is connected to the third port 903 through the thirteenth pipe 23.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present invention have been shown and described, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives, and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.

Claims (11)

1. A compressor assembly, comprising:
a first compressor having a first discharge port and a first return port, and a second compressor having a second discharge port and a second return port;
a first oil separator having a first oil outlet and a first oil inlet in communication with the first exhaust port, and a second oil separator having a second oil outlet and a second oil inlet in communication with the second exhaust port;
a first gas-liquid separator having a first separation chamber and a first gas-fraction inlet, a first oil return hole and a first gas-fraction outlet communicating with the first separation chamber, and a second gas-liquid separator having a second separation chamber and a second gas-fraction inlet, a second oil return hole and a second gas-fraction outlet communicating with the second separation chamber, the first oil outlet communicating with the first gas-fraction inlet, the second oil outlet communicating with the second gas-fraction inlet, each of the first gas-fraction outlet and the first oil return hole communicating with the first air return port, each of the second gas-fraction outlet and the second oil return hole communicating with the second air return port; and
the liquid balance pipe and the gas balance pipe are positioned above the liquid balance pipe, each of one end of the liquid balance pipe and one end of the gas balance pipe is communicated with the first separation cavity, and each of the other end of the liquid balance pipe and the other end of the gas balance pipe is communicated with the second separation cavity.
2. The compressor assembly of claim 1, wherein the first gas-liquid separator comprises:
a first cylinder defining the first separation chamber, and
the first air outlet pipe extends into the first separation cavity, the first oil return hole is formed in one part of the first air outlet pipe, and the first air separation outlet is formed in the other part of the first air outlet pipe;
the second gas-liquid separator includes:
a second cylinder defining a second separation chamber, an
The second air outlet pipe is provided with a second air outlet pipe, one part of the second air outlet pipe extends into the second separation cavity, the second oil return hole is formed in one part of the second air outlet pipe, and the second air separation outlet is formed in the other part of the second air outlet pipe;
the one end of the liquid balance pipe is located above the first oil return hole or the one end of the liquid balance pipe and the first oil return hole are located at the same height, and the other end of the liquid balance pipe is located above the second oil return hole or the other end of the liquid balance pipe and the second oil return hole are located at the same height.
3. The compressor assembly of claim 2, wherein the portion of the first outlet duct has a third oil return hole in communication with the first separation chamber and the portion of the second outlet duct has a fourth oil return hole in communication with the second separation chamber, wherein the third oil return hole is located above the first oil return hole or the third oil return hole and the first oil return hole are located at the same height and the fourth oil return hole is located above the second oil return hole or the fourth oil return hole and the second oil return hole are located at the same height.
4. The compressor assembly of claim 3, wherein the one end of the liquid balance pipe is located between the first oil return hole and the third oil return hole in an up-down direction, and the other end of the liquid balance pipe is located between the second oil return hole and the fourth oil return hole in the up-down direction.
5. The compressor assembly of claim 3 or 4, wherein the one end of the gas balance pipe is located above the third oil return hole or the one end of the gas balance pipe and the third oil return hole are located at the same height, and the other end of the gas balance pipe is located above the fourth oil return hole or the other end of the gas balance pipe and the fourth oil return hole are located at the same height.
6. The compressor assembly of claim 5, wherein the third oil return hole is located between the one end of the gas balance pipe and the one end of the liquid balance pipe in an up-down direction, and the fourth oil return hole is located between the other end of the gas balance pipe and the other end of the liquid balance pipe in an up-down direction.
7. The compressor assembly of any one of claims 1-4, wherein the first oil return hole and the second oil return hole are located at a same height; and/or
The bottom wall surface of the first separation cavity and the bottom wall surface of the second separation cavity are located at the same height, one end of the liquid balance pipe and the other end of the liquid balance pipe are located at the same height, and one end of the gas balance pipe and the other end of the gas balance pipe are located at the same height.
8. The compressor assembly of claim 3 or 4, wherein the third oil return hole and the fourth oil return hole are located at the same height.
9. The compressor assembly of claim 3 or 4, wherein each of the portion of the first outlet duct and the portion of the second outlet duct includes a U-shaped portion comprising:
a first section and a second section, each of the first section and the second section extending in an up-down direction; and
one end of the middle section is connected with the lower end of the first section, and the other end of the middle section is connected with the lower end of the second section;
the first oil return hole is formed in the middle section of the first air outlet pipe, the third oil return hole is formed in the first section of the first air outlet pipe, the second oil return hole is formed in the middle section of the second air outlet pipe, and the fourth oil return hole is formed in the first section of the second air outlet pipe.
10. An outdoor unit of an air conditioner, comprising:
the four-way valve comprises a first interface, a second interface, a third interface and a fourth interface;
the first port of the outdoor heat exchanger is connected with the first interface; and
a compressor assembly according to any one of claims 1-9, the first oil separator having a first oil outlet, the second oil separator having a second oil outlet, each of the first oil outlet and the second oil outlet being connected to the second interface, each of the first gas inlet and the second gas inlet being connected to the fourth interface.
11. An air conditioning system, comprising:
an air-conditioning outdoor unit according to claim 10; and
the indoor unit of the air conditioner comprises an indoor heat exchanger, a second port of the outdoor heat exchanger is connected with a first port of the indoor heat exchanger, and a second port of the indoor heat exchanger is connected with a third port.
CN202111284994.0A 2021-11-01 2021-11-01 Compressor assembly, air conditioner outdoor unit and air conditioning system Pending CN116067044A (en)

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CN202111284994.0A CN116067044A (en) 2021-11-01 2021-11-01 Compressor assembly, air conditioner outdoor unit and air conditioning system
PCT/CN2022/117115 WO2023071536A1 (en) 2021-11-01 2022-09-05 Compressor assembly, air conditioner outdoor unit, and air conditioning system
EP22885426.1A EP4354049A1 (en) 2021-11-01 2022-09-05 Compressor assembly, air conditioner outdoor unit, and air conditioning system

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JP4464333B2 (en) * 2005-08-12 2010-05-19 三星電子株式会社 Compressor oil leveling device and refrigerator
CN101676564A (en) * 2008-09-19 2010-03-24 江森自控楼宇设备科技(无锡)有限公司 Oil balancing device, compressor unit and oil balancing method thereof
CN104457030B (en) * 2013-09-13 2017-08-25 约克广州空调冷冻设备有限公司 Oil piping system and parallel type air-conditioner unit for parallel type air-conditioner unit
KR102165351B1 (en) * 2014-02-05 2020-10-13 엘지전자 주식회사 A heat-pump system and a method controlling the same
CN204757435U (en) * 2015-06-02 2015-11-11 广东美的暖通设备有限公司 Many online air conditioning system
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CN216557747U (en) * 2021-11-01 2022-05-17 广东美的暖通设备有限公司 Compressor assembly, air condensing units and air conditioning system

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