Air conditioning systems, air conditioning outdoor units and compressor components

Abstract

The present invention relates to an air conditioning system, an air conditioning outdoor unit and a compressor assembly, wherein the compressor assembly comprises a first compressor, a second compressor, a first oil separator, a second oil separator, a storage container, a gas-liquid separator, a liquid balance pipe and a gas balance pipe, wherein the first compressor has a first return air port, the second compressor has a second return air port, the first oil separator has a first oil outlet, the second oil separator has a second oil outlet, the storage container has a refrigerant inlet, the first oil outlet and the second oil outlet are both connected to the refrigerant inlet, the gas-liquid separator has a first gas outlet, a second gas outlet, a first oil return hole and a second oil return hole, the first gas outlet and the first oil return hole are both connected to the first return air port, the second gas outlet and the second oil return hole are both connected to the second return air port, and the liquid balance pipe and the gas balance pipe are both connected to the first separation chamber and the second separation chamber. The compressor assembly of the embodiment of the present invention has the advantages of high operating reliability.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning equipment, and in particular to an air conditioning system, an air conditioning outdoor unit and a compressor assembly. Background Art

[0002] With the development of society and the advancement of technology, the capacity of multi-split heat pump air conditioning systems is getting larger and larger. However, as the capacity of multi-split heat pump air conditioning systems increases, they face problems such as insufficient gas volume and difficulty in recovering refrigeration oil, which limits the development of multi-split heat pump air conditioning systems. In the related technology, the capacity of the air conditioning system is expanded by connecting gas parts in parallel. Although this solves the problem of insufficient gas volume, it still has the problem of poor reliability of compressor operation. Summary of the invention

[0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0004] To this end, an embodiment of the present invention provides a compressor assembly to improve the operating reliability of the compressor.

[0005] An embodiment of the present invention provides an air-conditioning outdoor unit to improve the operational reliability of the air-conditioning outdoor unit.

[0006] The embodiments of the present invention provide an air conditioning system to improve the operational reliability of the air conditioning system.

[0007] A compressor assembly according to an embodiment of the present invention comprises:

[0008] a first compressor and a second compressor, the first compressor having a first exhaust port and a first return port, the second compressor having a second exhaust port and a second return port;

[0009] a first oil separator and a second oil separator, the first oil separator having a first oil outlet and a first oil inlet communicating with the first exhaust port, and the second oil separator having a second oil outlet and a second oil inlet communicating with the second exhaust port;

[0010] a storage container having a containing chamber and a refrigerant inlet communicating with the containing chamber, wherein each of the first oil outlet and the second oil outlet is communicated with the refrigerant inlet;

[0011] a gas-liquid separator, the gas-liquid separator having a separation chamber and a first gas separation outlet, a second gas separation outlet, a first oil return hole, and a second oil return hole connected to the separation chamber, each of the first gas separation outlet and the first oil return hole being connected to the first gas return port, and each of the second gas separation outlet and the second oil return hole being connected to the second gas return port; and

[0012] A liquid balance pipe and a gas balance pipe, wherein the gas balance pipe is located above the liquid balance pipe, one end of the liquid balance pipe and one end of the gas balance pipe are each connected to the accommodating chamber, and the other end of the liquid balance pipe and the other end of the gas balance pipe are each connected to the separation chamber.

[0013] The compressor assembly according to the embodiment of the present invention has the advantages of high operating reliability.

[0014] In some embodiments, the storage container includes a shell, and the shell defines the accommodating cavity;

[0015] The gas-liquid separator comprises:

[0016] a cylinder body, the cylinder body defining the separation chamber, and

[0017] A first gas outlet pipe and a second gas outlet pipe, each of a portion of the first gas outlet pipe and a portion of the second gas outlet pipe extends into the separation chamber, the first oil return hole is provided in the portion of the first gas outlet pipe, the first gas separation outlet is provided in another portion of the first gas outlet pipe, the second oil return hole is provided in the portion of the second gas outlet pipe, and the second gas separation outlet is provided in another portion of the second gas outlet pipe;

[0018] wherein one end of the liquid balance pipe is located below 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, one end of the liquid balance pipe is located below the second oil return hole or the one end of the liquid balance pipe and the second oil return hole are at the same height, the other end of the liquid balance pipe is located below the first oil return hole or the other end of the liquid balance pipe and the first oil return hole are at the same height, the other end of the liquid balance pipe is located below the second oil return hole or the other end of the liquid balance pipe and the second oil return hole are at the same height.

[0019] In some embodiments, the portion of the first air outlet pipe has a third oil return hole connected to the separation chamber, and the portion of the second air outlet pipe has a fourth oil return hole connected to the 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 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 at the same height.

[0020] In some embodiments, 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 at the same height, one end of the gas balance pipe is located above the fourth oil return hole or the one end of the gas balance pipe and the fourth oil return hole are at the same height, the other end of the gas balance pipe is located above the third oil return hole or the other end of the gas balance pipe and the third oil return hole are at the same height, 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 at the same height.

[0021] 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, the third 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, the fourth 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.

[0022] In some embodiments, the first oil return hole and the second oil return hole are located at the same height; and / or

[0023] The third oil return hole and the fourth oil return hole are located at the same height.

[0024] In some embodiments, the bottom wall surface of the accommodating chamber and the bottom wall surface of the separation chamber are located at the same height, the one end of the liquid balance tube and the other end of the liquid balance tube are located at the same height, and the one end of the gas balance tube and the other end of the gas balance tube are located at the same height.

[0025] In some embodiments, the storage container includes a first air inlet pipe and a second air inlet pipe, each of a portion of the first air inlet pipe and a portion of the second air inlet pipe extends into the accommodating cavity, each of the portion of the first air inlet pipe and the portion of the second air inlet pipe is provided with the refrigerant inlet, and each of the first oil outlet and the second oil outlet is connected to the refrigerant inlet of the first air inlet pipe.

[0026] In some embodiments, the storage container includes a first air inlet pipe and a second air inlet pipe, a portion of the first air inlet pipe and a portion of the second air inlet pipe each extending into the accommodating cavity, the portion of the first air inlet pipe and the portion of the second air inlet pipe each being provided with the refrigerant inlet, the first oil outlet being connected to the refrigerant inlet of the first air inlet pipe, and the second oil outlet being connected to the refrigerant inlet of the second air inlet pipe.

[0027] In some embodiments, each of the portion of the first air outlet pipe and the portion of the second air outlet pipe comprises a U-shaped portion, and the U-shaped portion comprises:

[0028] a first section and a second section, each of the first section and the second section extending in an up-down direction; and

[0029] a middle section, one end of which is connected to the lower end of the first section, and the other end of which is connected to the lower end of the second section;

[0030] 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, the second 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.

[0031] The air conditioner outdoor unit according to the embodiment of the present invention comprises:

[0032] A four-way valve, the four-way valve comprising a first interface, a second interface, a third interface and a fourth interface;

[0033] an outdoor heat exchanger, a first port of the outdoor heat exchanger being connected to the first interface; and

[0034] A compressor assembly, wherein the compressor assembly is the compressor assembly described in any of the above embodiments of the present invention, 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 interface, and the refrigerant inlet is connected to the fourth interface.

[0035] The air conditioner outdoor unit according to the embodiment of the present invention has the advantages of high operating reliability.

[0036] The air conditioning system according to the embodiment of the present invention comprises:

[0037] An air-conditioning outdoor unit, wherein the air-conditioning outdoor unit is the air-conditioning outdoor unit described in any one of the above embodiments of the present invention; and

[0038] An air conditioner indoor unit comprises an indoor heat exchanger, a second port of the outdoor heat exchanger is connected to a first port of the indoor heat exchanger, and a second port of the indoor heat exchanger is connected to the third interface.

[0039] The air conditioning system according to the embodiment of the present invention has the advantages of high operational reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a structural schematic diagram of an air-conditioning outdoor unit according to an embodiment of the present invention.

[0041] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0042] Figure 3 It is a structural schematic diagram of an air-conditioning outdoor unit according to another embodiment of the present invention.

[0043] Reference numerals:

[0044] Air conditioner outdoor unit 100;

[0045] A first compressor 1; a first exhaust port 101; a first return air port 102;

[0046] The second compressor 2; the second exhaust port 201; the second air return port 202;

[0047] First oil separator 3; first oil separator inlet 301; first oil separator outlet 302; first oil separator outlet 303;

[0048] Second oil separator 4; second oil separator inlet 401; second oil separator outlet 402; second oil separator outlet 403;

[0049] Storage container 5; shell 501; accommodating chamber 5011; first air inlet pipe 502; first refrigerant inlet 5021; second air inlet pipe 503; second refrigerant inlet 5031;

[0050] Gas-liquid separator 6; cylinder 601; separation chamber 6011; first gas outlet pipe 602; first gas outlet 6021; first oil return hole 6022; third oil return hole 6023; second gas outlet pipe 603; second gas outlet 6031; second oil return hole 6032; fourth oil return hole 6033;

[0051] Liquid balance pipe 7; first end 701; second end 702; first pipe section 703; second pipe section 704; third pipe section 705;

[0052] Gas balance pipe 8; third end 801; fourth end 802;

[0053] Four-way valve 9; first interface 901; second interface 902; third interface 903; fourth interface 904;

[0054] Outdoor heat exchanger 10; first port 1001; second port 1002;

[0055] a first tube 11 ; a second tube 12 ; a third tube 13 ; a fourth tube 14 ; a fifth tube 15 ; a sixth tube 16 ; a seventh tube 17 ; an eighth tube 18 ; a ninth tube 19 ; a tenth tube 20 ; an eleventh tube 21 ; a twelfth tube 22 ; and a thirteenth tube 23 . DETAILED DESCRIPTION

[0056] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0057] A compressor assembly according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0058] like Figures 1 to 3 As shown, 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 storage container 5, a gas-liquid separator 6, a liquid balance pipe 7 and a gas balance pipe 8.

[0059] The first compressor 1 has a first exhaust port 101 and a first return port 102, and the second compressor 2 has a second exhaust 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.

[0060] The storage container 5 has a accommodating chamber 5011 and a refrigerant inlet (a first refrigerant inlet 5021 and a second refrigerant inlet 5031) communicating with the accommodating chamber 5011. Each of the first oil outlet 302 and the second oil outlet 402 is communicated with the refrigerant inlet. The gas-liquid separator 6 has a separation chamber 6011 and a first gas separation outlet 6021, a second gas separation outlet 6031, a first oil return hole 6022 and a second oil return hole 6032 communicating with the separation chamber 6011. Each of the first gas separation outlet 6021 and the first oil return hole 6022 is communicated with the first gas return port 102, and each of the second gas separation outlet 6031 and the second oil return hole 6032 is communicated with the second gas return port 202.

[0061] The gas balance pipe 8 is located above the liquid balance pipe 7. Those skilled in the art will understand that the gas balance pipe 8 described here as being located above the liquid balance pipe 7 means that when the storage container 5 and the gas-liquid separator 6 are in use, the gas balance pipe 8 is located above the liquid balance pipe 7.

[0062] One end of the liquid balance pipe 7 and one end of the gas balance pipe 8 are each connected to the accommodating chamber 5011, and the other end of the liquid balance pipe 7 and the other end of the gas balance pipe 8 are each connected to the separation chamber 6011. Figures 1 to 3 As shown, the liquid balance tube 7 has a first end 701 and a second end 702 opposite to each other in the length direction thereof, and the gas balance tube 8 has a third end 801 and a fourth end 802 opposite to each other in the length direction thereof. Each of the first end 701 and the third end 801 is connected to the accommodating chamber 5011, and each of the second end 702 and the fourth end 802 is connected to the separation chamber 6011.

[0063] Therefore, the liquid balance tube 7 and the gas balance tube 8 can be used to achieve the connection between the accommodating chamber 5011 and the separation chamber 6011, and the liquid balance and gas balance between the accommodating chamber 5011 and the separation chamber 6011 can be achieved, so that the gaseous substance in the accommodating chamber 5011 can enter the separation chamber 6011 through the gas balance tube 8, and the liquid substance in the accommodating chamber 5011 can enter the separation chamber 6011 through the liquid balance tube 7.

[0064] When the compressor assembly of the embodiment of the present invention is in operation, the refrigerant vapor containing refrigerant oil (first oil-containing refrigerant vapor) flowing out from the first exhaust port 101 of the first compressor 1 enters the first oil separator 3 through the first oil separator 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 refrigerant oil enters the accommodating chamber 5011 of the storage container 5 through the first oil outlet 302 and the refrigerant inlet, and the first refrigerant vapor enters the indoor heat exchanger for heat exchange. At the same time, the refrigerant vapor containing refrigerant 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 separator 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 accommodating chamber 5011 of the storage container 5 through the second oil outlet 402 and the refrigerant inlet, and the second refrigerant vapor enters the indoor heat exchanger for heat exchange.

[0065] In addition, a portion of the refrigerant (the third refrigerant) flowing out of the indoor heat exchanger and needing to return to the first compressor 1 and the second compressor 2 enters the accommodating cavity 5011 of the storage container 5 through the refrigerant inlet, and another portion of the refrigerant (the second refrigerant) flowing out of the indoor heat exchanger and needing to return to the first compressor 1 and the second compressor 2 enters the accommodating cavity 5011 of the storage container 5 through the refrigerant inlet.

[0066] Then, during the suction process of the first compressor 1 (the third refrigerant and the fourth refrigerant), the refrigerant oil in the separation chamber 6011 can return to the first compressor 1 through the first oil return hole 6022, the first gas separation outlet 6021 and the first gas return port 102; during the suction process of the second compressor 2 (the third refrigerant and the fourth refrigerant), a part of the refrigerant oil in the separation chamber 6011 can return to the second compressor 2 through the second oil return hole 6032, the second gas separation outlet 6031 and the second gas return port 202. Thus, the refrigerant oil of the first compressor 1 and the second compressor 2 is recovered.

[0067] For compressor components that return oil through a gas-liquid separator, the oil return volume of the compressor and the air intake volume of the compressor have the following relationship: the oil return volume of the compressor increases as the air intake volume of the compressor increases, and the oil return volume of the compressor decreases as the air intake volume of the compressor decreases. Therefore, when compressors of different capacities are used in the same system, if the air intake volume deviation of compressors of different capacities is too large (exceeding the design deviation), the deviation of the amount of refrigeration oil returned to the compressor along with the refrigerant vapor during the compressor suction process will also be large, resulting in some compressors (usually small-capacity compressors) having insufficient oil return or even unable to return oil, resulting in poor compressor operation reliability.

[0068] In the compressor assembly of the embodiment of the present invention, since the first refrigeration oil, the second refrigeration oil, the third refrigerant and the fourth refrigerant all first enter the accommodating chamber 5011 of the storage container 5, and then enter the separation chamber 6011 of the gas-liquid separator 6 through the liquid balance pipe 7 and the gas balance pipe 8, it can be ensured that there are refrigeration oil and refrigerant in the separation chamber 6011 where the first oil return hole 6022 and the second oil return hole 6032 are located, and the environmental pressures of the first oil return hole 6022 and the second oil return hole 6032 are equivalent. Therefore, the large deviation of the refrigerant distribution of the first compressor 1 and the second compressor 2 caused by the different capacities of the first compressor 1 and the second compressor 2 can be reduced or even avoided (the refrigerant at the gas inlet of the gas-liquid separator corresponding to the large-capacity compressor is extremely large, and the refrigerant at the gas inlet of the gas-liquid separator corresponding to the small-capacity compressor is extremely small). Furthermore, the problem of insufficient 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 can be reduced or even avoided. It avoids the wear of the compressor due to lack of lubrication caused by untimely or impossible oil return, and greatly improves the reliability of the compressor components.

[0069] Therefore, the compressor assembly according to the embodiment of the present invention has the advantages of high reliability.

[0070] In addition, the storage container 5 of the embodiment of the present invention can store excess refrigerant and refrigeration oil, and the gas-liquid separator 6 can not only store excess refrigerant and refrigeration oil, but also realize oil return of the compressor.

[0071] Optionally, the storage container may be a gas-liquid separator, and the containing chamber may be a separation chamber.

[0072] For example, the storage container is a first gas-liquid separator, and the gas-liquid separator is a second gas-liquid separator, whereby the refrigerant entering the first gas-liquid separator can be subjected to a first gas-liquid separation by the first gas-liquid separator, and then enter the second gas-liquid separator, and undergo a second gas-liquid separation in the second gas-liquid separator. In addition to achieving the gas-liquid separation function, the first gas-liquid separator can also store excess refrigerant and refrigeration oil; in addition to achieving the gas-liquid separation function and storing excess refrigerant and refrigeration oil, the second gas-liquid separator can also realize oil return of the compressor.

[0073] Alternatively, if Figure 1 and Figure 2 As shown, the compressor assembly includes a first tube 11, a second tube 12, a third tube 13, a fourth tube 14, a fifth tube 15 and a sixth tube 16. Among them, the first exhaust port 101 is connected to the first oil inlet 301 through the first tube 11, and the second exhaust port 201 is connected to the second oil inlet 401 through the second tube 12. The first oil outlet 302 is connected to the refrigerant inlet through the fifth tube 15, and the second oil outlet 402 is connected to the refrigerant inlet through the sixth tube 16. The first gas outlet 5021 is connected to the first return air port 102 through the third tube 13, and the second gas outlet 6021 is connected to the second return air port 202 through the fourth tube 14.

[0074] In some embodiments, the storage container 5 includes a shell 501 , and the shell 501 defines a accommodating cavity 5011 .

[0075] The gas-liquid separator 6 includes a cylinder 601, a first gas outlet pipe 602, and a second gas outlet pipe 603. The cylinder 601 defines a separation chamber 6011. A portion of the first gas outlet pipe 602 and a portion of the second gas outlet pipe 603 each extend into the separation chamber 6011. A first oil return hole 6022 is provided in a portion of the first gas outlet pipe 602, a first gas separation outlet 6021 is provided in another portion of the first gas outlet pipe 602, a second oil return hole 6032 is provided in a portion of the second gas outlet pipe 603, and a second gas separation outlet 6031 is provided in another portion of the second gas outlet pipe 603.

[0076] For example, the first gas outlet pipe 602 includes a first portion and a second portion, the first portion extends into the separation chamber 6011, and the second portion is located outside the separation chamber 6011. The first oil return hole 6022 is provided in the first portion of the first gas outlet pipe 602, and the first gas separation outlet 6021 is provided in the second portion of the first gas outlet pipe 602.

[0077] The second gas outlet pipe 603 includes a first portion and a second portion, wherein the first portion extends into the separation chamber 6011 and the second portion is located outside the separation chamber 6011. The second oil return hole 6032 is provided in the first portion of the second gas outlet pipe 603, and the second gas separation outlet 6031 is provided in the second portion of the gas outlet pipe 603.

[0078] Among them, one end of the liquid balance pipe 7 is located below the first oil return hole 6022 or one end of the liquid balance pipe 7 and the first oil return hole 6022 are at the same height; one end of the liquid balance pipe 7 is located below the second oil return hole 6032 or one end of the liquid balance pipe 7 and the second oil return hole 6032 are at the same height. The other end of the liquid balance pipe 7 is located below the first oil return hole 6022 or the other end of the liquid balance pipe 7 and the first oil return hole 6022 are at the same height; the other end of the liquid balance pipe 7 is located below the second oil return hole 6032 or the other end of the liquid balance pipe 7 and the second oil return hole 6032 are at the same height.

[0079] It can be understood by those skilled in the art that when the storage container 5 and the gas-liquid separator 6 are in use, one end of the liquid balance pipe 7 is located below the first oil return hole 6022 or one end of the liquid balance pipe 7 and the first oil return hole 6022 are at the same height; one end of the liquid balance pipe 7 is located below the second oil return hole 6032 or one end of the liquid balance pipe 7 and the second oil return hole 6032 are at the same height. The other end of the liquid balance pipe 7 is located below the first oil return hole 6022 or the other end of the liquid balance pipe 7 and the first oil return hole 6022 are at the same height; the other end of the liquid balance pipe 7 is located below the second oil return hole 6032 or the other end of the liquid balance pipe 7 and the second oil return hole 6032 are at the same height.

[0080] For example, Figure 1 and Figure 2 As shown, the bottom wall surface of the accommodating chamber 5011 and the bottom wall surface of the separation chamber 6011 are located at the same height, the distance between the first end 701(e) of the liquid balance tube 7 and the bottom wall surface of the accommodating chamber 5011 is L1, the distance between the first oil return hole 6022(a) and the bottom wall surface of the separation chamber 5011 is L2, the distance between the second end 702(f) of the liquid balance tube 7 and the bottom wall surface of the separation chamber 6011 is L3, and the distance between the second oil return hole 6032(c) and the bottom wall surface of the separation chamber 6011 is L4, wherein L2≥L1, L4≥L1, L2≥L3 and L4≥L3.

[0081] Therefore, the height of the liquid balance pipe 7 is not higher than the first oil return hole 6022 and the second oil return hole 6032, thereby effectively ensuring that the refrigerant oil in the accommodating chamber 5011 can enter the separation chamber 6011 through the liquid balance pipe 7, so that the refrigerant oil in the separation chamber 6011 can return to the first compressor 1 and the second compressor 2 through the first oil return hole 6022 and the second oil return hole 6032 respectively, which is beneficial to further improve the reliability of the compressor assembly.

[0082] Alternatively, if Figures 1 to 3 As shown, the storage container 5 includes a first air inlet pipe 502 and a second air inlet pipe 503, a portion of the first air inlet pipe 502 extends into the accommodating cavity 5011, and a portion of the second air inlet pipe 503 extends into the accommodating cavity 5011. Each of a portion of the first air inlet pipe 502 and a portion of the second air inlet pipe 503 is provided with a refrigerant inlet, and each of the first oil outlet 302 and the second oil outlet 402 is communicated with the refrigerant inlet of the first air inlet pipe 502.

[0083] For example, the refrigerant inlet of the first air inlet pipe 502 is the first refrigerant inlet 5021, and the refrigerant inlet of the second air inlet pipe 503 is the second refrigerant inlet 5031. Each of the first air inlet pipe 502 and the second air inlet pipe 503 includes a first portion and a second portion, the first portion of the first air inlet pipe 502 and the first portion of the second air inlet pipe 503 both extend into the accommodating cavity 5011, the second portion of the first air inlet pipe 502 and the second portion of the second air inlet pipe 503 are located outside the accommodating cavity 5011, the first refrigerant inlet 5021 is provided on the first portion of the first air inlet pipe 502, and the second refrigerant inlet 5031 is provided on the first portion of the second air inlet pipe 503.

[0084] That is, the first refrigerant inlet 5021 is used as both the inlet for refrigeration oil and the inlet for refrigerant; the second refrigerant inlet 5031 is used only as the inlet for refrigerant.

[0085] The first air inlet pipe 502 and the first oil outlet 302 are connected via the fifth pipe 15 , and the second air inlet pipe 503 and the second oil outlet 402 are connected via the sixth pipe 16 .

[0086] In other embodiments, the storage container 5 includes a first air inlet pipe 502 and a second air inlet pipe 503, and a portion of the first air inlet pipe 502 and a portion of the second air inlet pipe 503 each extend into the accommodating cavity 5011. A portion of the first air inlet pipe 502 and a portion of the second air inlet pipe 503 are each provided with a refrigerant inlet, the first oil outlet 302 is communicated with the refrigerant inlet of the first air inlet pipe 502, and the second oil outlet 402 is communicated with the refrigerant inlet of the second air inlet pipe 503.

[0087] At this time, the refrigerant inlet of the first air inlet pipe 502 is the first refrigerant inlet 5021, and the refrigerant inlet of the second air inlet pipe 503 is the second refrigerant inlet 5031. The first refrigerant inlet 5021 serves as both the inlet of refrigeration oil and the inlet of refrigerant; the second refrigerant inlet 5031 serves as both the inlet of refrigeration oil and the inlet of refrigerant.

[0088] Optionally, one end of the liquid balance pipe 7 extends into the housing 501 so that the one end of the liquid balance pipe 7 is connected to the accommodating chamber 5011. The other end of the liquid balance pipe 7 extends into the cylinder 601 so that the other end of the liquid balance pipe 7 is connected to the separation chamber 6011.

[0089] For example, Figures 1 to 3 As shown, the first end 701 of the liquid balance tube 7 extends into the interior of the shell 501 , and the second end 702 of the liquid balance tube 7 extends into the interior of the cylinder 601 .

[0090] In some embodiments, the bottom wall of the accommodating chamber 5011 and the bottom wall of the separation chamber 6011 are at the same height, and one end of the liquid balance pipe 7 and the other end of the liquid balance pipe 7 are at the same height. In other words, the liquid balance pipe 7 is arranged horizontally. The first oil return hole 6022 and the second oil return hole 6032 are at the same height.

[0091] For example, Figures 1 to 3 As shown, the bottom wall surface of the accommodating chamber 5011 and the bottom wall surface of the separation chamber 6011 are located at the same height, and the above L1 = L3, L2 = L4.

[0092] Therefore, when assembling the compressor assembly, it is only necessary to place the bottom wall surface of the accommodating chamber 5011 and the bottom wall surface of the separation chamber 6011 at the same installation height, which facilitates the assembly of the compressor assembly.

[0093] Optionally, each of the liquid balance pipe 7 and the gas balance pipe 8 is a straight pipe.

[0094] For example, Figure 1 and Figure 2 As shown, the liquid balance tube 7 is a straight tube, the connection port between the liquid balance tube 7 and the storage container 5 is e, and the connection port between the liquid balance tube 7 and the gas-liquid separator 6 is f. e and f are at the same height, 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).

[0095] Optionally, at least one of the liquid balance pipe 7 and the gas balance pipe 8 is a bent pipe.

[0096] For example, Figure 3As shown, 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 is horizontally arranged, each of the first pipe segment 703 and the third pipe segment 705 is inclined, one end of the second pipe segment 704 is connected to the lower end of the first pipe segment 703, and the other end of the second pipe segment 704 is connected to the lower end of the third pipe segment 705.

[0097] The two ends of the second pipe section 704 are connected to the storage container 5 and the gas-liquid separator 6 respectively, and the connection port between the second pipe section 704 and the storage container 5 is e2, and the connection port between the second pipe section 704 and the gas-liquid separator 6 is f2. The first pipe section 703 extends into the accommodating cavity 5011, and the third pipe section 705 extends into the separation cavity 6011, and the end e1 of the first pipe section 703 away from the second pipe section 704 is the first end 701, and the end f1 of the third pipe section 705 away from the second pipe section 704 is the second end 702. 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.

[0098] In some embodiments, a portion of the first gas outlet pipe 602 has a third oil return hole 6023 connected to the separation chamber 6011, and a portion of the second gas outlet pipe 603 has a fourth oil return hole 6033 connected to the separation chamber. The third oil return hole 6023 is located above the first oil return hole 6022 or the third oil return hole 6023 and the first oil return hole 6022 are located at the same height. The fourth oil return hole 6033 is located above the second oil return hole 6032 or the fourth oil return hole 6033 and the second oil return hole 6032 are located at the same height.

[0099] For example, Figures 1 to 3 As shown, the distance between the third oil return hole 6023 (b) and the bottom wall of the separation chamber 6011 is L5, and the distance between the fourth oil return hole 6033 (d) and the bottom wall of the separation chamber 6011 is L6, wherein L5 ≥ L2 and L6 ≥ L4.

[0100] Thus, when the first compressor 1 fails to return oil in time through the first oil return hole 6022 or the first oil return hole 6022 cannot return oil for some reason, the first compressor 1 can return oil through the third oil return hole 6023, and when the second compressor 2 fails to return oil in time through the second oil return hole 6032 or the second oil return hole 6032 cannot return oil for some reason, the second compressor 2 can return oil through the fourth oil return hole 6033. This can further avoid the compressor from being worn due to lack of lubrication caused by the untimely or inability to return oil, thereby further improving the reliability of the compressor assembly.

[0101] In some embodiments, the third oil return hole 6023 and the fourth oil return hole 6033 are located at the same height.

[0102] For example, when the bottom wall surface of the accommodating chamber 5011 and the bottom wall surface of the separation chamber 6011 are located at the same height, the above L5 = L6.

[0103] Thus, the problem of large deviation in refrigerant distribution 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 improve the reliability of the compressor assembly.

[0104] In some embodiments, one end of the gas balance pipe 8 is located above the third oil return hole 6023 or one end of the gas balance pipe 8 and the third oil return hole 6023 are at the same height, one end of the gas balance pipe 8 is located above the fourth oil return hole 6033 or one end of the gas balance pipe 8 and the fourth oil return hole 6033 are at the same height. The other end of the gas balance pipe 8 is located above the third oil return hole 6023 or the other end of the gas balance pipe 8 and the third oil return hole 6023 are at the same height, the other end of the gas balance pipe 8 is located above the fourth oil return hole 6033 or the other end of the gas balance pipe 8 and the fourth oil return hole 6033 are at the same height.

[0105] For example, Figure 1 and Figure 3 As shown, when the bottom wall surface of the accommodating chamber 5011 and the bottom wall surface of the separation chamber 6011 are at the same height, the distance between one end (g) of the gas balance tube 8 and the bottom wall surface of the accommodating chamber 5011 is L7, L7≥L5, and the distance between the other end (h) of the gas balance tube 8 and the bottom wall surface of the separation chamber 6011 is L8, L8≥L6.

[0106] Therefore, the compressor assembly of the embodiment of the present invention can better utilize the gas balance pipe 8 to achieve gas balance in the accommodating chamber 5011 and the separation chamber 6011, and then utilize the liquid balance pipe 7 to achieve liquid balance in the accommodating chamber 5011 and the separation chamber 6011, which is beneficial to further improve the reliability of the compressor assembly.

[0107] In some embodiments, the third oil return hole 6023 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 third oil return hole 6023 is located between the other end of the gas balance pipe 8 and the other end of the liquid balance pipe 7 in the vertical direction. The fourth oil return hole 6033 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 6033 is located between the other end of the gas balance pipe 8 and the other end of the liquid balance pipe 7 in the vertical direction.

[0108] For example, when the bottom wall surface of the accommodating chamber 5011 and the bottom wall surface of the separation chamber 6011 are located at the same height, the above-mentioned L7>L5>L1 and L8>L6>L2.

[0109] This helps to further improve the reliability of the compressor assembly.

[0110] In some embodiments, the bottom wall surface of the accommodating chamber 5011 and the bottom wall surface of the separation chamber 6011 are located 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 gas balance pipe 8 and the other end of the gas balance pipe 8 are located at the same height. In other words, the gas balance pipe 8 is arranged horizontally.

[0111] Therefore, when assembling the compressor assembly, it is only necessary to place the bottom wall surface of the accommodating chamber 5011 and the bottom wall surface of the separation chamber 6011 at the same installation height, which facilitates the assembly of the compressor assembly.

[0112] In some embodiments, each of a portion of the first air outlet pipe 602 and a portion of the second air outlet pipe 603 includes a U-shaped portion. The U-shaped portion includes a first segment, a second segment, and a middle segment, each of the first segment and the second segment extends in an up-down direction, one end of the middle segment is connected to the lower end of the first segment, and the other end of the middle segment is connected to the lower end of the second segment.

[0113] Among them, the first oil return hole 6022 is arranged on the middle section of the first air outlet pipe 602, the third oil return hole 6023 is arranged on the first section of the first air outlet pipe 602, the second oil return hole 6032 is arranged on the middle section of the second air outlet pipe 603, and the fourth oil return hole 6033 is arranged on the first section of the second air outlet pipe 603.

[0114] The air conditioner outdoor unit 100 according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0115] like Figures 1 to 3 As shown, the air-conditioning outdoor unit 100 according to the embodiment of the present invention includes a four-way valve 9, an outdoor heat exchanger 10 and a compressor assembly.

[0116] The four-way valve 9 includes a first interface 901 , a second interface 902 , a third interface 903 and a fourth interface 904 . The first port 1001 of the outdoor heat exchanger 10 is connected to the first interface 901 .

[0117] The compressor assembly is the compressor assembly described in any 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 refrigerant inlet 5021 and the second refrigerant inlet 5031 is connected to the fourth interface 904.

[0118] Therefore, the air-conditioning outdoor unit 100 according to the embodiment of the present invention has advantages such as high operating reliability.

[0119] Optionally, 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 inlet pipe 502 and the second air inlet pipe 503 is connected to the fourth interface 904 through the 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 the other end of the eighth pipe 18 and the other end of the ninth pipe 19 are each connected to the second interface 902 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.

[0120] An air conditioning system according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0121] The air conditioning system of the embodiment of the present invention includes an air conditioning outdoor unit and an air conditioning indoor unit. The air conditioning outdoor unit is the air conditioning outdoor unit 100 described in any of the above embodiments, and the air conditioning 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 interface 903.

[0122] Therefore, the air conditioning system according to the embodiment of the present invention has the advantages of high operational reliability.

[0123] Optionally, 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 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 interface 903 through the thirteenth pipe 23.

[0124] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0125] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0126] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0127] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a 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. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0128] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0129] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A compressor assembly, characterized in that: include: a first compressor and a second compressor, the first compressor having a first exhaust port and a first return port, the second compressor having a second exhaust port and a second return port; a first oil separator and a second oil separator, the first oil separator having a first oil outlet and a first oil inlet communicating with the first exhaust port, and the second oil separator having a second oil outlet and a second oil inlet communicating with the second exhaust port; a storage container having a containing chamber and a refrigerant inlet communicating with the containing chamber, wherein each of the first oil outlet and the second oil outlet is communicated with the refrigerant inlet; a gas-liquid separator, the gas-liquid separator having a separation chamber and a first gas separation outlet, a second gas separation outlet, a first oil return hole, and a second oil return hole connected to the separation chamber, each of the first gas separation outlet and the first oil return hole being connected to the first gas return port, and each of the second gas separation outlet and the second oil return hole being connected to the second gas return port; and a liquid balance pipe and a gas balance pipe, wherein the gas balance pipe is located above the liquid balance pipe, one end of the liquid balance pipe and one end of the gas balance pipe are each in communication with the accommodating chamber, the other end of the liquid balance pipe and the other end of the gas balance pipe are each in communication with the separation chamber, and at least one of the liquid balance pipe and the gas balance pipe is a bent pipe; The storage container comprises a first air inlet pipe and a second air inlet pipe, each of a portion of the first air inlet pipe and a portion of the second air inlet pipe extends into the accommodating chamber, each of the portion of the first air inlet pipe and the portion of the second air inlet pipe is provided with the refrigerant inlet, and each of the first oil outlet and the second oil outlet is communicated with the refrigerant inlet of the first air inlet pipe; The refrigerant inlet of the first air inlet pipe is a first refrigerant inlet, and the refrigerant inlet of the second air inlet pipe is a second refrigerant inlet. The first refrigerant inlet is both a refrigeration oil inlet and a refrigerant inlet, and the second refrigerant inlet is only used as a refrigerant inlet. The gas-liquid separator comprises: a cylinder body, the cylinder body defining the separation chamber, and A first gas outlet pipe and a second gas outlet pipe, each of a portion of the first gas outlet pipe and a portion of the second gas outlet pipe extends into the separation chamber, the first oil return hole is provided in the portion of the first gas outlet pipe, the first gas separation outlet is provided in another portion of the first gas outlet pipe, the second oil return hole is provided in the portion of the second gas outlet pipe, and the second gas separation outlet is provided in another portion of the second gas outlet pipe; The first oil return hole and the second oil return hole are located at the same height.

2. The compressor assembly according to claim 1, characterized in that The storage container comprises a shell, and the shell defines the accommodating cavity; wherein one end of the liquid balance pipe is located below 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, one end of the liquid balance pipe is located below the second oil return hole or the one end of the liquid balance pipe and the second oil return hole are at the same height, the other end of the liquid balance pipe is located below the first oil return hole or the other end of the liquid balance pipe and the first oil return hole are at the same height, the other end of the liquid balance pipe is located below the second oil return hole or the other end of the liquid balance pipe and the second oil return hole are at the same height.

3. The compressor assembly according to claim 2, characterized in that The portion of the first air outlet pipe has a third oil return hole connected to the separation chamber, and the portion of the second air outlet pipe has a fourth oil return hole connected to the 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 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 at the same height.

4. The compressor assembly according to claim 3, characterized in that 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 at the same height, one end of the gas balance pipe is located above the fourth oil return hole or the one end of the gas balance pipe and the fourth oil return hole are at the same height, the other end of the gas balance pipe is located above the third oil return hole or the other end of the gas balance pipe and the third oil return hole are at the same height, 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 at the same height.

5. The compressor assembly according to claim 4, characterized in that 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, the third 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, the fourth 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.

6. The compressor assembly according to any one of claims 1 to 5, characterized in that: and / or The bottom wall surface of the accommodating chamber and the bottom wall surface of the separation chamber are located at the same height, the one end of the liquid balance pipe and the other end of the liquid balance pipe are located at the same height, and the one end of the gas balance pipe and the other end of the gas balance pipe are located at the same height.

7. The compressor assembly according to any one of claims 3 to 5, characterized in that: The third oil return hole and the fourth oil return hole are located at the same height.

8. The compressor assembly according to any one of claims 3 to 5, characterized in that: Each of the portion of the first air outlet pipe and the portion of the second air outlet pipe comprises a U-shaped portion, the 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 a middle section, one end of which is connected to the lower end of the first section, and the other end of which is connected to the lower end of the second section; 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, the second 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.

9. An air conditioner outdoor unit, characterized in that: include: A four-way valve, the four-way valve comprising a first interface, a second interface, a third interface and a fourth interface; an outdoor heat exchanger, a first port of the outdoor heat exchanger being connected to the first interface; and A compressor assembly, wherein the compressor assembly is a compressor assembly according to any one of claims 1-8, 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, and the refrigerant inlet being connected to the fourth interface.

10. An air conditioning system, characterized in that: include: An air-conditioning outdoor unit, wherein the air-conditioning outdoor unit is the air-conditioning outdoor unit according to claim 9; and An air conditioner indoor unit comprises an indoor heat exchanger, a second port of the outdoor heat exchanger is connected to a first port of the indoor heat exchanger, and a second port of the indoor heat exchanger is connected to the third interface.

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