WO2023071536A1

WO2023071536A1 - Compressor assembly, air conditioner outdoor unit, and air conditioning system

Info

Publication number: WO2023071536A1
Application number: PCT/CN2022/117115
Authority: WO
Inventors: 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
Original assignee: 广东美的暖通设备有限公司; 合肥美的暖通设备有限公司
Priority date: 2021-11-01
Filing date: 2022-09-05
Publication date: 2023-05-04
Also published as: CN116067044A; EP4354049A1

Abstract

A compressor assembly, an air conditioner outdoor unit, and an air conditioning system. The compressor assembly comprises 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 gas return port (101); the second compressor (2) has a second gas return port (102); the first oil separator (3) has a first oil outlet (302); the second oil separator (4) has a second oil outlet (402); the first gas-liquid separator (5) has a first separation chamber (5011), a first separation gas inlet (5031), a first oil return hole (5022), and a first separation gas outlet (5021); the second gas-liquid separator (6) has a second separation chamber (6011), a second separation gas inlet (6031), a second oil return hole (6022), and a second separation gas outlet (6021); both the first separation gas outlet (5021) and the first oil return hole (5022) are connected to the first gas return port (101); both the second separation gas outlet (6021) and the second oil return hole (6022) are connected to the second gas return port (102); and both the liquid balance pipe (7) and the gas balance pipe (8) are communicated with the first separation chamber (5011) and the second separation chamber (6011).

Description

Compressor components, air conditioner outdoor units and air conditioning systems

Cross References to Related Applications

This application is based on a Chinese patent application with application number 202111284994.0 and a filing date of November 01, 2021, and claims the priority of this Chinese patent application. The entire content of this Chinese patent application is hereby incorporated by reference into this application.

technical field

The present disclosure relates to the technical field of air conditioning equipment, in particular to a compressor assembly, an air conditioner outdoor unit and an air conditioner system.

Background technique

With the development of society and the progress of technology, the capacity of multi-connected heat pump air conditioning system is getting larger and larger. However, while the capacity of the multi-connected heat pump air-conditioning system is increasing, it faces problems such as insufficient gas volume and difficult recovery of refrigeration oil, which limits the development of the multi-connected heat pump air-conditioning system. In the related art, the capacity of the air-conditioning system is expanded by means of parallel connection of gas divisions. Although the problem of insufficient volume of gas divisions is solved, there is a problem of poor operating reliability of the compressor.

Contents of the invention

The present disclosure aims to solve one of the technical problems in the related art at least to a certain extent.

For this reason, the embodiments of the present disclosure propose a compressor assembly to improve the operation reliability of the compressor.

Embodiments of the present disclosure propose an outdoor unit of an air conditioner, so as to improve the operation reliability of the outdoor unit of the air conditioner.

Embodiments of the present disclosure propose an air conditioning system to improve the operation reliability of the air conditioning system.

A compressor assembly of an embodiment of the present disclosure includes:

a first compressor and a second compressor, the first compressor has a first exhaust port and a first air return port, the second compressor has a second exhaust port and a second air return port;

A first oil separator and a second oil separator, the first oil separator has a first oil outlet and a first oil inlet connected to the first exhaust port, the second oil separator has a first oil inlet Two oil outlets and a second oil inlet connected to the second exhaust port;

A first gas-liquid separator and a second gas-liquid separator, the first gas-liquid separator has a first separation chamber and a first gas inlet connected to the first separation chamber, a first oil return hole and a second gas inlet A gas outlet, the second gas-liquid separator has a second separation chamber and a second gas inlet connected to the second separation chamber, a second oil return hole and a second gas outlet, the first The oil outlet communicates with the first gas inlet, the second oil outlet communicates with the second gas inlet, and each of the first gas outlet and the first oil return hole Communicating with the first air return port, each of the second gas outlet and the second oil return hole communicates with the second air return port; and

a liquid balance tube and a gas balance tube, the gas balance tube is located above the liquid balance tube, and each of one end of the liquid balance tube and one end of the gas balance tube communicates with the first separation chamber, Each of the other end of the liquid balance pipe and the other end of the gas balance pipe communicates with the second separation chamber.

The compressor assembly according to the embodiment of the present disclosure has the advantages of high operational reliability and the like.

In some embodiments, the first gas-liquid separator includes:

a first cylinder defining the first separation chamber, and

The first air outlet pipe, a part of the first air outlet pipe extends into the first separation chamber, the first oil return hole is set at the part of the first air outlet pipe, and the first air part The outlet is located at another part of the first outlet pipe;

The second gas-liquid separator includes:

a second cylinder defining a second separation chamber, and

The second air outlet pipe, a part of the second air outlet pipe extends into the second separation chamber, the second oil return hole is arranged on the part of the second air outlet pipe, and the second air outlet The outlet is located at another part of the second air outlet pipe;

Wherein the one end of the liquid balance pipe is above the first oil return hole or the one end of the liquid balance pipe and the first oil return hole are at the same height, the liquid balance pipe The other end is located above the second oil return hole or the other end of the liquid balance pipe is at the same height as the second oil return hole.

In some embodiments, the part of the first air outlet pipe has a third oil return hole that communicates with the first separation chamber, and the part of the second air outlet pipe has a third oil return hole that communicates with the second separation chamber. connected fourth oil return hole, 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, the fourth oil return hole The 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 vertical direction, and the other end of the liquid balance pipe is vertically located between the first oil return hole and the third oil return hole. The direction is between the second oil return hole and the fourth oil return hole.

In some embodiments, the one end of the air balance pipe is located above the third oil return hole or the one end of the air balance pipe and the third oil return hole are located at the same height, the air The other end of the balance pipe is located above the fourth oil return hole or the other end of the air balance pipe is at the same height as the fourth oil return hole.

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 vertical direction, and the fourth oil return hole is located in the vertical direction is located between the other end of the gas balance tube and the other end of the liquid balance tube.

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 of the first separation chamber and the bottom wall of the second separation chamber are at the same height, the one end of the liquid balance pipe and the other end of the liquid balance pipe are at the same height, and the gas The one end of the balance pipe and the other end of the air 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 said portion of said first outlet tube and said portion of said second outlet tube comprises a U-shaped portion comprising:

a first segment and a second segment, each of the first segment and the second segment extending in a vertical direction; and

a middle section, one end of the middle section is connected to the lower end of the first section, and the other end of the middle section is connected to the lower end of the second section;

Wherein the first oil return hole is arranged on the middle section of the first air outlet pipe, the third oil return hole is arranged on the first section of the first air outlet pipe, and the second oil return hole is arranged on the first section of the first air outlet pipe. The oil return hole is arranged on the middle section of the second air outlet pipe, and the fourth oil return hole is arranged on the first section of the second air outlet pipe.

The air conditioner outdoor unit according to the embodiment of the present disclosure includes:

A four-way valve, the four-way valve includes a first port, a second port, a third port and a fourth port;

an outdoor heat exchanger, the first port of the outdoor heat exchanger is connected to the first interface; and

A compressor assembly, the compressor assembly is the compressor assembly described in any one of the above-mentioned embodiments of the present disclosure, the first oil separator has a first oil outlet, and 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 interface, each of the first gas inlet and the second gas inlet is connected to the first Four interfaces are connected.

The outdoor unit of the air conditioner according to the embodiments of the present disclosure has advantages such as high operation reliability.

The air conditioning system of the embodiment of the present disclosure includes:

An outdoor unit of an air conditioner, the outdoor unit of an air conditioner is the outdoor unit of an air conditioner described in any one of the above-mentioned embodiments of the present disclosure; and

An air-conditioning indoor unit, the air-conditioning indoor unit includes an indoor heat exchanger, the second port of the outdoor heat exchanger is connected to the first port of the indoor heat exchanger, and the second port of the indoor heat exchanger is connected to the connected to the third interface.

The air conditioning system according to the embodiments of the present disclosure has advantages such as high operational reliability.

Description of drawings

Fig. 1 is a schematic structural diagram of an outdoor unit of an air conditioner according to an embodiment of the present disclosure.

Fig. 2 is an enlarged view of A in Fig. 1 .

Fig. 3 is a schematic structural view of an outdoor unit of an air conditioner according to another embodiment of the present disclosure.

Fig. 4 is a schematic structural diagram of a first intake pipe and a second intake pipe according to an embodiment of the present disclosure.

Fig. 5 is a schematic structural view of a first intake pipe and a second intake pipe according to an embodiment of the present disclosure.

Fig. 6 is a schematic structural diagram of a first intake pipe and a second intake pipe according to an embodiment of the present disclosure.

Reference signs:

Air conditioner outdoor unit 100;

The first compressor 1; the first exhaust port 101; the first air return port 102;

The second compressor 2; the second exhaust port 201; the second air return port 202;

The first oil separator 3; the first oil inlet 301; the first oil outlet 302; the first oil outlet 303;

The second oil separator 4; the second oil inlet 401; the second oil outlet 402; the second oil outlet 403;

The first gas-liquid separator 5; the first cylinder 501; the first separation chamber 5011; the first gas outlet pipe 502; the first gas outlet 5021; Trachea 503; first air inlet 5031;

The second gas-liquid separator 6; the second cylinder 601; the second separation chamber 6011; the second gas outlet pipe 602; the second gas separation outlet 6021; Trachea 603; Second air inlet 6031;

Liquid balance pipe 7; first end 701; second end 702; first pipe section 703; second pipe section 704; third pipe section 705;

Gas balance pipe 8; third end 801; fourth end 802;

Four-way valve 9; first port 901; second port 902; third port 903; fourth port 904;

Outdoor heat exchanger 10; first port 1001; second port 1002;

The first tube 11; the second tube 12; the third tube 13; the fourth tube 14; the fifth tube 15; the sixth tube 16; the seventh tube 17; the eighth tube 18; the ninth tube 19; the tenth tube 20; The eleventh pipe 21; the twelfth pipe 22; the thirteenth pipe 23.

Detailed ways

Embodiments of the present disclosure are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the figures are exemplary and are intended to explain the present disclosure and should not be construed as limiting the present disclosure.

A compressor assembly of an embodiment of the present disclosure is described below with reference to the accompanying drawings.

As shown in Figures 1 to 3, the compressor assembly of the embodiment of the present disclosure includes a first compressor 1, a second compressor 2, a first oil separator 3, a second oil separator 4, and a first gas-liquid separator 5. The second gas-liquid separator 6, the liquid balance pipe 7 and the 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 communicated with the first exhaust port 101, and the second oil separator 4 has a second oil outlet 402 and a second oil outlet 402 connected to the second exhaust port 201. The connected second oil inlet 401.

The first gas-liquid separator 5 has a first separation chamber 5011 , a first gas fraction inlet 5031 , a first oil return hole 5022 and a first gas fraction outlet 5021 communicating with the first separation chamber 5011 . The second gas-liquid separator 6 has a second separation chamber 6011 , a second gas inlet 6031 , a second oil return hole 6022 and a second gas outlet 6021 communicating with the second separation chamber 6011 . The first oil outlet 302 communicates with the first gas inlet 5031 , and the second oil outlet 402 communicates with the second gas inlet 6031 . Each of the first air outlet 5021 and the first oil return hole 5022 communicates with the first air return port 102 . Each of the second air outlet 6021 and the second oil return hole 6022 communicates with the second air return port 202 .

The gas balance pipe 8 is located above the liquid balance pipe 7. Those skilled in the art can understand that the gas balance pipe 8 described here is located above the liquid balance pipe 7. When the first gas-liquid separator 5 and the second When the gas-liquid separator 6 is in use, the gas balance pipe 8 is located above the liquid balance pipe 7 .

Each of one end of the liquid balance pipe 7 and one end of the gas 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 gas balance pipe 8 communicates with the second separation chamber 6011. connected. For example, as shown in Figures 1 to 3, the liquid balance tube 7 has opposite first ends 701 and second ends 702 in its length direction, and the gas balance tube 8 has opposite third ends 801 and 702 in its length direction. The fourth end 802 , 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 .

Thus, the communication between the first separation chamber 5011 and the second separation chamber 6011 can be realized by using the liquid balance pipe 7 and the gas balance pipe 8 , so as to realize the liquid balance and gas balance between the first separation chamber 5011 and the second separation chamber 6011 .

When the compressor assembly in the embodiment of the present disclosure is in operation, the refrigerant vapor containing refrigerating oil (first oil-containing refrigerant vapor) flowing out from the first exhaust port 101 of the first compressor 1 enters the first oil component inlet 301 into the first Oil separator 3 , the first oil-containing refrigerant vapor is separated into first refrigerant vapor and first refrigeration oil in the first oil separator 3 . The first refrigerated oil enters the first separation chamber 5011 of the first gas-liquid separator 5 through the first oil outlet 302 and the first gas inlet 5031, and the first refrigerant vapor enters the indoor heat exchanger for heat exchange. At the same time, the refrigerant vapor containing refrigerating oil (second oil-containing refrigerant vapor) flowing out from the second exhaust 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 The refrigerant vapor is separated into second refrigerant vapor and second refrigerant oil in the second oil separator 4 . The second refrigerated oil enters the second separation chamber 6011 of the second gas-liquid separator 6 through the second oil outlet 402 and the second gas inlet 6031, and the second refrigerant vapor enters the indoor heat exchanger for heat exchange.

In addition, a part of the refrigerant (third refrigerant) that flows out of the indoor heat exchanger and needs to be returned to the first compressor 1 and the second compressor 2 enters the first gas-liquid separator 5 through the first gas inlet 5031 In the first separation chamber 5011; another part of the refrigerant (fourth refrigerant) that flows out of the indoor heat exchanger and needs to be returned to the first compressor 1 and the second compressor 2 enters through the second gas inlet 6031 Inside the second separation chamber 6011 of the second gas-liquid separator 6 .

Next, during the suction process of the first compressor 1 (the third refrigerant and the fourth refrigerant), the refrigerated oil in the first separation chamber 5011 can pass through the first oil return hole 5022 and the first gas fraction along with the refrigerant vapor. The outlet 5021 and the first air return port 102 are returned to the first compressor 1; during the suction process of the second compressor 2 (the third refrigerant and the fourth refrigerant), the refrigerated oil in the second separation chamber 6011 can be refrigerated The agent vapor returns to the second compressor 2 through the second oil return hole 6022 , the second gas separation outlet 6021 and the second air return port 202 . In this way, the recovery of refrigerating oil in the first compressor 1 and the second compressor 2 is realized.

For the compressor assembly that returns oil through the gas-liquid separator, the oil return volume of the compressor has the following relationship with the suction volume of the compressor: the oil return volume of the compressor increases with the suction volume of the compressor, and the compressor The amount of oil returned decreases as the suction capacity of the compressor decreases. Therefore, when compressors with different capacities are used in the same system, if the deviation of the suction volume of the compressors with different capacities is too large (exceeding the design deviation), the refrigerant vapor will return to the compressor during the suction process of the compressor. The deviation of the amount of refrigeration oil will also be large, resulting in the problem of insufficient oil return or even no oil return in some compressors (usually compressors with small capacity).

In the related art, the air-conditioning system capacity is expanded by means of gas separation parallel connection. Although the problem of insufficient gas separation volume is solved, the problem of recovery of refrigeration oil cannot be solved, and there is a large problem that the oil return is not timely and cannot be returned. risk, resulting in poor reliability of compressor operation.

In the compressor assembly of the embodiment of the present disclosure, since the first separation chamber 5011 of the first gas-liquid separator 5 and the second separation chamber 6011 of the second gas-liquid separator 6 communicate through the liquid balance pipe 7 and the gas balance pipe 8, therefore, It can be ensured that both the first separation chamber 5011 of the first gas-liquid separator 5 and the second separation chamber 6011 of the second gas-liquid separator 6 contain refrigerated oil and refrigerant. Thereby, the first gas fraction inlet 5031 of the first gas-liquid separator 5 and the second gas fraction of the second gas-liquid separator 6 caused by the different capacities of the first compressor 1 and the second compressor 2 can be reduced or even avoided. The refrigerant distribution deviation at inlet 6031 is large (there is a lot of refrigerant at the gas inlet of the gas-liquid separator corresponding to the large-capacity compressor, and the refrigerant at the gas inlet of the gas-liquid separator corresponding to the small-capacity compressor very little refrigerant). Furthermore, it can reduce or even avoid the problem of insufficient oil return or even no oil return of the small-capacity compressor caused by the different capacities of the first compressor 1 and the second compressor 2 . It avoids compressor wear due to lack of lubrication due to delayed oil return or inability to return oil, which greatly improves the reliability of compressor components.

Therefore, the compressor assembly of the embodiment of the present disclosure has advantages such as high reliability.

In addition, each compressor in the embodiments of the present disclosure has a corresponding oil separator and gas-liquid separator, so that each compressor can form a relatively independent refrigeration oil circulation system.

In some embodiments of the present disclosure, as shown in FIGS. 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. The first exhaust port 101 communicates with the first oil component inlet 301 through the first pipe 11 , and the second exhaust port 201 communicates with the second oil component inlet 401 through the second tube 12 . The first oil outlet 302 communicates with the first gas inlet 5031 through the fifth pipe 15 , and the second oil outlet 402 communicates with the second gas inlet 6031 through the sixth pipe 16 . The first gas component outlet 5021 communicates with the first gas return port 102 through the third pipe 13 , and the second gas component outlet 6021 communicates with the second gas return port 202 through the fourth tube 14 .

In some embodiments, as shown in FIGS. 1 to 3 , the first gas-liquid separator 5 includes a first cylinder 501 and a first gas outlet pipe 502, the first cylinder 501 defines a first separation chamber 5011, and the first A part of the air outlet pipe 502 protrudes into the first separation chamber 5011 . The first oil return hole 5022 is set at a part of the first air outlet pipe 502 , and the first gas outlet 5021 is set at another part of the first air outlet pipe 502 .

For example, the first air outlet pipe 502 includes a first part and a second part, the first part extends into the first separation chamber 5011 , and the second part is located outside the first separation chamber 5011 . The first oil return hole 5022 is set at the first part of the first gas outlet pipe 502 , and the first gas outlet 5021 is set at the second part of the first gas outlet pipe 502 .

The second gas-liquid separator 6 includes a second cylinder body 601 and a second air outlet pipe 602 , the second cylinder body 601 defines a second separation chamber 6011 , and a part of the second air outlet pipe 602 protrudes into the second separation chamber 6011 . The second oil return hole 6022 is set at a part of the second gas outlet pipe 602 , and the second gas outlet 6021 is set at another part of the second gas outlet pipe 602 .

For example, the second air outlet pipe 602 includes a first part and a second part, the first part extends into the second separation chamber 6011 , and the second part is located outside the second separation chamber 6011 . The second oil return hole 6022 is set at the first part of the second air outlet pipe 602 , and the second gas outlet 6021 is set at the second part of the second air outlet pipe 602 .

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 is at the same height as the first oil return hole 5022; 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.

Those skilled in the art can understand that, when the first gas-liquid separator 5 and the second gas-liquid separator 6 are in use, one end of the liquid balance pipe 7 is located above the first oil return hole 5022 or the liquid balance pipe 7 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 is at the same height as the second oil return hole 6022.

For example, as shown in Figure 1 and Figure 2, the bottom wall of the first separation chamber 5011 and the bottom wall of the second separation chamber 6011 are at the same height, and the first end 701 (e) of the liquid balance pipe 7 is connected to the first separation chamber 5011 The distance between the bottom wall of the first oil return hole 5022 (a) and the bottom wall of the first separation chamber 5011 is L2, the second end 702 (f) of the liquid balance pipe 7 is connected to the second The distance between the bottom walls of the separation chamber 6011 is L3, and the distance between the second oil return hole 6022(c) and the bottom wall of the second separation chamber 6011 is L4, wherein L1≥L2 and L3≥L4.

Therefore, when the liquid level of the refrigerating oil in the first separation chamber 5011 is not lower than the first oil return hole 5022, the refrigerating oil in the first separation chamber 5011 can enter the second separation chamber 6011 through the liquid balance pipe 7 ; Only when the liquid level of the refrigerating oil in the second separation chamber 6011 is not lower than the second oil return hole 6022 can the refrigerating oil in the second separation chamber 6011 enter the first separation chamber 5011 through the liquid balance pipe 7 . Therefore, the refrigerated oil in the first separation chamber 5011 returns to the first compressor 1 preferentially, and the refrigerated oil in the first separation chamber 5011 can enter the second separation chamber only when the first compressor 1 has oil return. 6011 provides refrigeration oil for the second compressor 2, and the refrigeration oil in the second separation chamber 6011 returns oil to the second compressor 2 preferentially. Under the condition that the second compressor 2 has oil return, the refrigeration oil in the second separation chamber 6011 The refrigerating oil can enter the first separation cavity 5011 to provide refrigerating oil for the first compressor 1 . In turn, it is beneficial to further improve the reliability of the compressor assembly.

In some embodiments of the present disclosure, the first gas-liquid separator 5 includes a first inlet pipe 503, a part of the first inlet pipe 503 protrudes into the first separation chamber 5011, and the first gas inlet 5031 is located in the first Part of the intake pipe 503. The second gas-liquid separator 6 includes a second air inlet pipe 603, the second air inlet pipe 603 stretches into the second separation chamber 6011, a part of the second air inlet pipe 603 extends into the second separation chamber 6011, and the second gas fraction The inlet 6031 is provided in a part of the second intake pipe 603 .

The first air intake pipe 503 communicates with the first oil outlet 302 through the fifth pipe 15 , and the second air inlet pipe 603 communicates with the second oil outlet 402 through the sixth pipe 16 .

In some embodiments of the present disclosure, one end of the liquid balance tube 7 extends into the first cylinder 501 , so that one end of the liquid balance tube 7 communicates with the first separation chamber 5011 . The other end of the liquid balance tube 7 extends into the second cylinder 601 , so that the other end of the liquid balance tube 7 communicates with the second separation chamber 6011 .

For example, as shown in FIGS. 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 6022 are located at the same height.

For example, when the bottom wall of the first separation chamber 5011 and the bottom wall of the second separation chamber 6011 are at the same height, the above-mentioned L2=L4.

Thus, the problem of large refrigerant distribution deviation caused by the different capacities of the first compressor 1 and the second compressor 2 can be further reduced or even avoided, which is beneficial to further improving the reliability of the compressor assembly.

In some embodiments of the present disclosure, each of the liquid balance pipe 7 and the gas balance pipe 8 is a straight pipe.

For example, as shown in Figure 1 and Figure 2, the liquid balance pipe 7 is a straight pipe, the connection port between the liquid balance pipe 7 and the first gas-liquid separator 5 is e, and the connection port between the liquid balance pipe 7 and the second gas-liquid separator 6 The connection ports are at the same height as f, e and f, and each of the first end 701 of the liquid balance tube 7 and the second end 702 of the liquid balance tube 7 is at the same height as the connection port e (connection port f).

In some embodiments of the present disclosure, at least one of the liquid balance pipe 7 and the gas balance pipe 8 is an elbow.

For example, as shown in Figure 3, the liquid balance pipe 7 includes a first pipe section 703, a second pipe section 704 and a third pipe section 705, the second pipe section 704 is horizontally arranged, and each of the first pipe section 703 and the third pipe section 705 is inclined It is provided that one end of the second pipe section 704 is connected with the lower end of the first pipe section 703 , and the other end of the second pipe section 704 is connected with the lower end of the third pipe section 705 .

The two ends of the second pipe section 704 are connected to the first gas-liquid separator 5 and the second gas-liquid separator 6 respectively, and the connection port between the second pipe section 704 and the first gas-liquid separator 5 is e2, and the second pipe section 704 is connected to the second gas-liquid separator 5. The connection port of 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 the end e1 of the first pipe section 703 away from the second pipe section 704 is the first end 701 of the liquid balance pipe 7 , the end f1 of the third pipe section 705 away from the second pipe section 704 is the 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 part of the first air outlet pipe 502 has a third oil return hole 5023 communicated with the first separation chamber 5011, and a part of the second air outlet pipe 602 has a fourth oil return hole communicated with the second separation chamber 6011 6023. 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 at the same height, and the fourth oil return hole 6023 is located above the second oil return hole 6022 or the third oil return hole 5022 The four oil return holes 6023 and the second oil return hole 6022 are located at the same height.

For example, as shown in Figures 1 to 3, when the bottom wall of the first separation chamber 5011 and the bottom wall of the second separation chamber 6011 are at the same height, the third oil return hole 5023 (b) and the bottom of the first separation chamber 5011 The distance between the walls is L5, and the distance between the fourth oil return hole 6023(d) and the bottom wall of the second separation chamber 6011 is L6, wherein L5≥L2 and L6≥L4.

Therefore, when the first compressor 1 does not return oil in time through the first oil return hole 5022 or the first oil return hole 5022 cannot return oil for some reason, the first compressor 1 can realize oil return through the third oil return hole 5023 When the second compressor 2 does not return oil through the second oil return hole 6022 in time or the second oil return hole 6022 cannot return oil for some reason, the second compressor 2 can realize oil return through the fourth oil return hole 6023 . In this way, the compressor can be further prevented from being worn due to lack of lubrication due to untimely oil return or inability to return oil to the compressor, thereby further improving the reliability of the compressor components.

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 vertical direction, and the other end of the liquid balance pipe 7 is located in the second oil return hole 6022 in the vertical direction And between the fourth oil return hole 6023.

For example, as shown in FIG. 1 to FIG. 3 , when the bottom wall of the first separation chamber 5011 and the bottom wall of the second separation chamber 6011 are at the same height, the above-mentioned L5≥L1≥L2, and L6≥L3≥L4.

Therefore, it is beneficial to further improve the reliability of the compressor assembly.

In some embodiments, the third oil return hole 5023 and the fourth oil return hole 6023 are located at the same height.

For example, when the bottom wall of the first separation chamber 5011 and the bottom wall of the second separation chamber 6011 are at the same height, the above L5=L6.

In some embodiments, one end of the air balance pipe 8 is located above the third oil return hole 5023 or one end of the air balance pipe 8 is at the same height as the third oil return hole 5023, and the other end of the air balance pipe 8 is located at the fourth return hole 5023. The top of the oil 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 Figures 1 to 3, when the bottom wall of the first separation chamber 5011 and the bottom wall of the second separation chamber 6011 are at the same height, one end (g) of the gas balance tube 8 is connected to the bottom of the first separation chamber 5011. The distance between the walls is L7, L7≥L5, and the distance between the other end (h) of the gas balance tube 8 and the bottom wall of the second separation chamber 6011 is L8, L8≥L6.

Therefore, the compressor assembly of the embodiment of the present disclosure can better use the gas balance pipe 8 to realize the gas balance in the first separation chamber 5011 and the second separation chamber 6011, and then use the liquid balance pipe 7 to realize the gas balance between the first separation chamber 5011 and the second separation chamber 6011. The liquid balance in the second separation chamber 6011 is conducive 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 pipe 8 and one end of the liquid balance pipe 7 in the vertical direction, and the fourth oil return hole 6023 is located at the other end of the gas balance pipe 8 in the vertical direction. Between one end and the other end of the liquid balance tube 7.

For example, when the bottom wall of the first separation chamber 5011 and the bottom wall of the second separation chamber 6011 are at the same height, the above-mentioned L7>L5>L1 and L8>L6>L3.

In some embodiments, the bottom wall of the first separation chamber 5011 and the bottom wall of the second separation chamber 6011 are at the same height. One end of the liquid balance pipe 7 and the other end of the liquid balance pipe 7 are located at the same height. In other words, the liquid balance pipe 7 is arranged horizontally. One end of the air balance pipe 8 and the other end of the air balance pipe 8 are located at the same height. In other words, the gas balance pipe 8 is arranged horizontally.

Therefore, when assembling the compressor assembly, it is only necessary to place the bottom wall of the first separation chamber 5011 and the bottom wall of the second separation chamber 6011 at the same installation height, which facilitates the assembly of the compressor assembly.

In some embodiments, each of a portion of the first outlet tube 502 and a portion of the second outlet tube 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 extends in the up-down direction, one end of the intermediate section is connected to the lower end of the first section, and the other end of the intermediate section is connected to the lower end of the first section. The lower end of the second segment is connected.

The first oil return hole 5022 is arranged on the middle section of the first air outlet pipe 502, the third oil return hole 5023 is arranged on the first section of the first air outlet pipe 502, and the second oil return hole 6022 is arranged on the second air outlet pipe 602 The fourth oil return hole 6023 is set on the first section of the second air outlet pipe 602 on the middle section.

In the present disclosure, the first section of the U-shaped portion of the first air outlet pipe 502 may be located between the middle section of the U-shaped portion of the first air outlet pipe 502 and the first gas outlet 5021, and the U-shaped portion of the first air outlet pipe 502 The second section of the section is opposite to the first section of the U-shaped section of the first outlet pipe 502, and vice versa. Similarly, the first section of the U-shaped portion of the second air outlet pipe 602 can be located between the middle section of the U-shaped portion of the second air outlet pipe 602 and the first gas outlet 6021, and the U-shaped portion of the second air outlet pipe 602 The second section is opposite to the first section of the U-shaped portion of the second air outlet pipe 602 , and vice versa.

For ease of description, the following situation is taken as an example below: the first section of the U-shaped portion of the first air outlet pipe 502 is located between the middle section of the U-shaped portion of the first air outlet pipe and the first gas outlet 5021, the first The second section of the U-shaped portion of the air outlet pipe 502 is opposite to the first section of the U-shaped portion of the first air outlet pipe 502; the first section of the U-shaped portion of the second air outlet pipe 602 is located at the end of the U-shaped portion of the second air outlet pipe Between the middle section and the second gas separation outlet 6021 , the second section of the U-shaped portion of the second air outlet pipe 602 is opposite to the first section of the U-shaped portion of the second air outlet pipe 602 .

Then, in some embodiments, the third oil return hole 5023 can be arranged on the first section of the first air outlet pipe 502, and the fourth oil return hole 6023 can be arranged on the first section of the second air outlet pipe 602, as shown in Fig. 4 shown.

In some embodiments, the third oil return hole 5023 can also be arranged on the second section of the first air outlet pipe 502, and the fourth oil return hole 6023 is arranged on the second section of the second air outlet pipe 602, as shown in FIG. 2 Show.

In some embodiments, the third oil return hole 5023 can also be provided on the first section of the first air outlet pipe 502, while the fourth oil return hole 6023 is provided on the second section of the second air outlet pipe 602, as shown in Figure 5 shown;

In some embodiments, the third oil return hole 5023 can also be provided on the second section of the first air outlet pipe 502, and the fourth oil return hole 6023 is provided on the first section of the second air outlet pipe 602, as shown in Figure 6 shown.

The air conditioner outdoor unit 100 according to an embodiment of the present disclosure will be described below with reference to the accompanying drawings.

As shown in FIGS. 1 to 3 , the air conditioner outdoor unit 100 of the embodiment of the present disclosure 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 interface 901 .

The compressor assembly is the compressor assembly described in any one of the above embodiments. 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 the second interface 902 . Each of the first gas inlet 5031 and the second gas inlet 6031 is connected to the fourth interface 904 .

Therefore, the air conditioner outdoor unit 100 of the embodiment of the present disclosure has advantages such as high operational reliability.

In some embodiments of the present disclosure, 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 air intake pipe 503 and the second air intake pipe 603 is connected to the fourth interface 904 through the seventh pipe 17 . One end of the eighth pipe 18 is connected with the first oil outlet 303, one end of the ninth pipe 19 is connected with 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 with the first oil outlet. The two interfaces 902 are connected through the tenth pipe 20 . The first port 1001 of the outdoor heat exchanger 10 is connected to the first interface 901 through the eleventh pipe 21 .

An air conditioning system according to an embodiment of the present disclosure will be described below with reference to the accompanying drawings.

An air conditioning system according to an embodiment of the present disclosure includes an air conditioner outdoor unit and an air conditioner indoor unit. The air conditioner outdoor unit is the air conditioner outdoor unit 100 described in any of the above embodiments, 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 indoor heat exchange The second port of the device is connected to the third interface 903.

Therefore, the air conditioning system of the embodiment of the present disclosure has the advantages of high operational reliability and the like.

In some embodiments of the present disclosure, the air conditioning system includes a twelfth pipe 22 and a thirteenth pipe 23 . The second port 1002 of the outdoor heat exchanger 10 is connected with the first port of the indoor heat exchanger through the twelfth pipe 22 , and the second port of the indoor heat exchanger is connected with the third interface 903 through the thirteenth pipe 23 .

In describing the present disclosure, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial", The orientations or positional relationships indicated by "radial", "circumferential", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying the referred devices or elements Must be in a particular orientation, constructed, and operate in a particular orientation, and thus should not be construed as limiting on the present disclosure.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present disclosure, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

In this disclosure, terms such as "installation", "connection", "connection" and "fixation" should be interpreted in a broad sense, for example, it can be a fixed connection or a detachable connection unless otherwise clearly defined and limited. , or integrated; can be mechanically connected, can also be electrically connected or can communicate with each other; can be directly connected, can also be indirectly connected through an intermediary, can be the internal communication of two components or the interaction relationship between two components, Unless expressly defined otherwise. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present disclosure according to specific situations.

In the present disclosure, unless otherwise clearly stated and limited, a first feature being "on" or "under" a second feature may mean that the first and second features are in direct contact, or that the first and second features are indirect through an intermediary. touch. Moreover, "above", "above" and "above" the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "beneath" and "beneath" the first feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is less horizontally than the second feature.

In this disclosure, the terms "one embodiment," "some embodiments," "example," "specific examples," or "some examples" mean a specific feature, structure, material, or feature described in connection with the embodiment or example. Features are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without conflicting with each other.

Although the embodiments of the present disclosure have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present disclosure, and those skilled in the art can make the above-mentioned embodiments within the scope of the present disclosure. The embodiments are subject to changes, modifications, substitutions and variations.

Claims

A compressor assembly comprising:

a first compressor and a second compressor, the first compressor has a first exhaust port and a first air return port, the second compressor has a second exhaust port and a second air return port;

A first oil separator and a second oil separator, the first oil separator has a first oil outlet and a first oil inlet connected to the first exhaust port, the second oil separator has a first oil inlet Two oil outlets and a second oil inlet connected to the second exhaust port;

A first gas-liquid separator and a second gas-liquid separator, the first gas-liquid separator has a first separation chamber and a first gas inlet connected to the first separation chamber, a first oil return hole and a second gas inlet A gas outlet, the second gas-liquid separator has a second separation chamber and a second gas inlet connected to the second separation chamber, a second oil return hole and a second gas outlet, the first The oil outlet communicates with the first gas inlet, the second oil outlet communicates with the second gas inlet, and each of the first gas outlet and the first oil return hole Communicating with the first air return port, each of the second gas outlet and the second oil return hole communicates with the second air return port; and

a liquid balance tube and a gas balance tube, the gas balance tube is located above the liquid balance tube, and each of one end of the liquid balance tube and one end of the gas balance tube communicates with the first separation chamber, Each of the other end of the liquid balance pipe and the other end of the gas balance pipe communicates with the second separation chamber.
The compressor assembly of claim 1, wherein said first accumulator comprises:

a first cylinder defining the first separation chamber, and

The first air outlet pipe, a part of the first air outlet pipe extends into the first separation chamber, the first oil return hole is set at the part of the first air outlet pipe, and the first air part The outlet is located at another part of the first outlet pipe;

The second gas-liquid separator includes:

a second cylinder defining the second separation chamber, and

The second air outlet pipe, a part of the second air outlet pipe extends into the second separation chamber, the second oil return hole is arranged on the part of the second air outlet pipe, and the second air outlet The outlet is located at another part of the second air outlet pipe;

Wherein the one end of the liquid balance pipe is above the first oil return hole or the one end of the liquid balance pipe and the first oil return hole are at the same height, the liquid balance pipe The other end is located above the second oil return hole or the other end of the liquid balance pipe is at the same height as the second oil return hole.
The compressor assembly according to claim 2, wherein the part of the first air outlet pipe has a third oil return hole communicating with the first separation chamber, and the part of the second air outlet pipe has a The fourth oil return hole communicated 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, 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.
The compressor assembly according to 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 the vertical direction, and the liquid balance pipe The other end of is located between the second oil return hole and the fourth oil return hole in the vertical direction.
The compressor assembly according to claim 3 or 4, wherein the one end of the air balance pipe is located above the third oil return hole or the one end of the air balance pipe is connected to the third oil return hole. The oil holes are located at the same height, and the other end of the air balance pipe is located above the fourth oil return hole or the other end of the air balance pipe and the fourth oil return hole are located at the same height.
The compressor assembly according to any one of claims 3 to 5, wherein the third oil return hole is located at the one end of the gas balance pipe and the one end of the liquid balance pipe in the vertical direction Between, 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 vertical direction.
The compressor assembly according to any one of claims 1-6, wherein the first oil return hole and the second oil return hole are located at the same height; and/or

The bottom wall of the first separation chamber and the bottom wall of the second separation chamber are at the same height, the one end of the liquid balance pipe and the other end of the liquid balance pipe are at the same height, and the gas The one end of the balance pipe and the other end of the air balance pipe are located at the same height.
The compressor assembly according to any one of claims 3-7, wherein the third oil return hole and the fourth oil return hole are located at the same height.
The compressor assembly of any one of claims 3-7, wherein said portion of said first outlet duct and said portion of said second outlet duct each comprise a U-shaped portion, The U-shaped section includes:

a first segment and a second segment, each of the first segment and the second segment extending in a vertical direction; and

a middle section, one end of the middle section is connected to the lower end of the first section, and the other end of the middle section is connected to the lower end of the second section;

Wherein the first oil return hole is arranged on the middle section of the first air outlet pipe, the third oil return hole is arranged on the first section of the first air outlet pipe, and the second oil return hole is arranged on the first section of the first air outlet pipe. The oil return hole is arranged on the middle section of the second air outlet pipe, and the fourth oil return hole is arranged on the first section of the second air outlet pipe.
The compressor assembly according to claim 9, wherein said first section of said U-shaped portion of said first outlet pipe is located between said middle section and said first section of said U-shaped portion of said first outlet pipe. Between the first gas separation outlet, the first section of the U-shaped part of the second air outlet pipe is located between the middle section of the U-shaped part of the second air outlet pipe and the second Between gas outlets.
An air conditioner outdoor unit, comprising:

A four-way valve, the four-way valve includes a first port, a second port, a third port and a fourth port;

an outdoor heat exchanger, the first port of the outdoor heat exchanger is connected to the first interface; and

A compressor assembly, the compressor assembly is the compressor assembly according to any one of claims 1-10, the first oil separator has a first oil separation outlet, and the second oil separator has a second oil separator Each of the first oil outlet and the second oil outlet is connected to the second interface, and each of the first gas inlet and the second gas inlet is connected to the second interface. The fourth interface is connected.
An air conditioning system comprising:

An air conditioner outdoor unit, the air conditioner outdoor unit is the air conditioner outdoor unit according to claim 11; and

An air-conditioning indoor unit, the air-conditioning indoor unit includes an indoor heat exchanger, the second port of the outdoor heat exchanger is connected to the first port of the indoor heat exchanger, and the second port of the indoor heat exchanger is connected to the connected to the third interface.