WO2021082206A1 - Liquid storage and oil separation device, compressor assembly, heat exchange system and electrical equipment - Google Patents

Abstract

A liquid storage and oil separation device, a compressor assembly, a heat exchange system and electrical equipment. The liquid storage and oil separation device comprises a housing (1) and a partition assembly provided in the housing (1). The top surface of the housing (1) is insertably provided with a first connection pipe (3) and a second connection pipe (4), the bottom surface is insertably provided with a third connection pipe (5) and a fourth connection pipe (6), and the part of the third connection pipe (5) extending into the housing (1) is provided with an oil return hole (5.1). The partition assembly is used to divide the housing (1) into a gas-liquid separation chamber (1.1) and an oil separation chamber (1.2). There is a cavity (2.3) at the inner part of the partition assembly, and the lower part of the partition assembly is provided with an oil-through hole (2.4) used for connecting the gas-liquid separation chamber (1.1) and the oil separation chamber (1.2). The first connection pipe (3) and the third connection pipe (5) separately communicate with the gas-liquid separation chamber (1.1); the second connection pipe (4) and the fourth connection pipe (6) separately communicate with the oil separation chamber (1.2); and a port of the fourth connection pipe (6) extending into the housing (1) is located above the oil-through hole (2.4) and the oil return hole (5.1). Not only may gas-liquid separation and oil separation be achieved and installation space be saved, but the intake air temperature of a compressor may also be prevented from being too high by means of providing the cavity (2.3) in the partition assembly for heat insulation.

Description

Liquid storage and oil separation device, compressor components, heat exchange system and electrical equipment

Cross-references to related applications

This application claims the priority of the Chinese patent application filed on October 31, 2019 with the application number 2019110632782 and the invention title of "liquid storage and oil separation device, compressor assembly, heat exchange system and electrical equipment", which is by reference All are incorporated into this application.

Technical field

This application relates to the field of compressor accessories, in particular to a liquid storage and oil separation device, a compressor assembly, a heat exchange system and electrical equipment.

Background technique

The air-conditioning system is prone to the phenomenon of compressor suction with liquid due to insufficient evaporation under refrigerating conditions, and even liquid shock may even be caused in severe cases. In order to avoid liquid shock, the suction port of the compressor is usually provided with a liquid reservoir. At the same time, in order to prevent the lubricating oil from the compressor from entering the heat exchanger and affecting the heat exchange efficiency of the heat exchanger, an oil separator is usually installed in the refrigeration circuit. At present, the accumulator and the oil separator of most air-conditioning systems are two independent components that are arranged separately, which not only occupies a large installation space, but also increases the cost. Although very few air-conditioning systems adopt an integrated structure that integrates the accumulator and the oil separator, the direct heat transfer between the accumulator and the oil separator of this integrated structure can easily lead to the compressor The temperature is too high.

Summary of the invention

This application aims to solve at least one of the technical problems existing in the prior art or related technologies. For this reason, the present application proposes a liquid storage and oil separation device with a simple structure and convenient installation to reduce costs, save installation space, and avoid excessively high intake air temperature of the compressor.

The application also proposes a compressor assembly.

This application also proposes a heat exchange system.

This application also proposes an electrical equipment.

The liquid storage and oil separation device according to the embodiment of the first aspect of the present application includes:

A housing, a first connection pipe and a second connection pipe are inserted on the top surface, a third connection pipe and a fourth connection pipe are inserted on the bottom surface, and the part of the third connection pipe extending into the housing is provided with an oil return hole;

The partition assembly is arranged in the housing and is used to separate the housing into a gas-liquid separation cavity and an oil separation cavity; the partition assembly has a cavity inside, and the lower part of the partition assembly is provided with a communication The gas-liquid separation cavity and the oil passage hole of the oil separation cavity; the first connection pipe and the third connection pipe are respectively communicated with the gas-liquid separation cavity, and the second connection pipe and the fourth connection pipe are respectively In communication with the oil separation chamber, the port of the fourth connecting pipe extending into the housing is located above the oil passage hole and the oil return hole.

The liquid storage and oil separation device according to the embodiments of the present application can not only realize gas-liquid separation and oil separation, reduce costs and save installation space, but also can significantly reduce gas-liquid separation by arranging a cavity in the baffle assembly for heat insulation. The heat transfer between the separation chamber and the oil separation chamber prevents the compressor's intake air temperature from being too high.

In addition, the liquid storage and oil separation device according to the embodiments of the present application may also have the following additional technical features:

According to an embodiment of the present application, the partition assembly includes a first partition and a second partition that are parallel to each other, and there is a gap between the first partition and the second partition to form the cavity , The lower part of the first partition and the second partition are both provided with the oil through hole.

According to an embodiment of the present application, the first partition and the second partition are flat plates or arc-shaped plates.

According to an embodiment of the present application, the cross-sectional shape of the arc-shaped plate is U-shaped or ring-shaped.

According to an embodiment of the present application, it further includes a first oil filter element arranged in the gas-liquid separation chamber, the first oil filter element partitions the gas-liquid separation chamber into two chambers, the first A connecting pipe and the third connecting pipe are respectively located on both sides of the first oil filter element.

According to an embodiment of the present application, the first oil filter element extends from the top surface of the gas-liquid separation chamber to the bottom surface thereof, or the first oil filter element extends from the side wall of the gas-liquid separation chamber to The partition assembly.

According to an embodiment of the present application, it further includes a second oil filter element arranged in the oil separation cavity, the second oil filter element divides the oil separation cavity into two chambers, and the second connecting pipe And the fourth connecting pipe are respectively located on both sides of the second oil filter element.

According to an embodiment of the present application, the second oil filter element extends from the top surface of the oil separation chamber to the bottom surface thereof, or the second oil filter element extends from the side wall of the oil separation chamber to the bottom surface of the oil separation chamber. Bulkhead components.

A compressor assembly according to an embodiment of the second aspect of the present application includes a compressor and the above-mentioned liquid storage and oil separation device, the third connecting pipe is in communication with the suction port of the compressor, and the fourth connecting pipe is connected to the suction port of the compressor. The exhaust port of the compressor or the supplementary air port of the compressor communicates.

A heat exchange system according to an embodiment of the third aspect of the present application includes an evaporator, a condenser, a compressor assembly, and a throttling device. The compressor assembly is the compressor assembly described above, and the first connection pipe is connected to the The outlet of the evaporator is connected.

According to an embodiment of the present application, when the fourth connecting pipe is in communication with the exhaust port of the compressor, the second connecting pipe is in communication with the inlet of the condenser.

According to an embodiment of the present application, in the case that the fourth connection pipe is in communication with the air supplement port of the compressor, the heat exchange system further includes a supplemental gas enthalpy increasing branch, and the supplementary gas enthalpy increasing branch is One end is in communication with the outlet of the condenser, and the other end of the supplemental gas enthalpy increasing branch is in communication with the second connecting pipe.

The electrical equipment according to the embodiment of the fourth aspect of the present application includes the compressor assembly described above.

According to an embodiment of the present application, the electrical equipment is a refrigeration equipment, a heat pump dryer, a washing machine, a heat pump water heater, or a heat pump dishwasher.

The above-mentioned one or more technical solutions in the embodiments of this application have at least one of the following technical effects:

The liquid storage and oil separation device in the present application divides the shell into a gas-liquid separation cavity and an oil separation cavity by using a partition assembly, and respectively opens an oil hole and an oil return hole on the partition assembly and the third connecting pipe. The gas-liquid separation cavity is used to separate the refrigerant droplets and lubricating oil contained in the exhaust of the evaporator. At the same time, the lubricating oil deposited on the bottom of the gas-liquid separation cavity is timely supplied to the compressor through the oil return hole, and oil can also be used. The separation chamber separates the lubricating oil in the exhaust of the compressor or the exhaust of the intermediate return flow path. In addition, the present application can significantly reduce the heat transfer between the oil separation chamber and the gas-liquid separation chamber by providing a cavity inside the baffle assembly, and ensure that the exhaust gas of the evaporator passes through the gas-liquid separation chamber for gas-liquid separation. There will be no major changes, so that the compressor's intake air temperature can be prevented from being too high. It can be seen that the liquid storage and oil separation device in the present application has a simple structure and low cost, which can not only realize gas-liquid separation and oil separation, reduce costs and save installation space, but also avoid excessively high intake air temperature of the compressor.

The compressor assembly in this application adopts the above-mentioned liquid storage and oil separation device, and the heat exchange system and electrical equipment in this application adopt the above-mentioned compressor assembly, which can not only realize the two functions of gas-liquid separation and oil separation, but also save installation space. The cost is reduced and the intake air temperature of the compressor can be prevented from being too high.

The additional aspects and advantages of the present application will be partly given in the following description, and part of them will become obvious from the following description, or be understood through the practice of the present application.

Description of the drawings

In order to more clearly describe the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are For some of the embodiments of the present application, for those of ordinary skill in the art, other drawings may be obtained based on these drawings without creative work.

Fig. 1 is an axonometric schematic diagram of a liquid storage and oil separation device in an embodiment of the present application;

2 is a schematic top view of a liquid storage and oil separation device in an embodiment of the present application;

Figure 3 is a schematic front view of a liquid storage and oil separation device in an embodiment of the present application;

Figure 4 is a cross-sectional view of Figure 2 at A-A;

Figure 5 is an enlarged view of Figure 4 at C;

Fig. 6 is a cross-sectional view of Fig. 3 at B-B.

Reference signs:

1: Shell; 1.1: Gas-liquid separation chamber; 1.2: Oil separation chamber; 2.1: First partition;

2.2: the second partition; 2.3: the cavity; 2.4: the oil hole; 3: the first connection pipe;

4: Second takeover; 5: Third takeover; 5.1: Oil return hole; 6: Fourth takeover;

7: The first oil filter; 8: The second oil filter.

Detailed ways

In order to make the purpose, technical solutions and advantages of the application more clear, the following will clearly describe the technical solutions in the application in conjunction with the drawings in the application. Obviously, the described embodiments are part of the application, but not all of them. Examples. Based on the embodiments in the application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the scope of the application for protection.

In the description of the embodiments of the present application, it should be noted that the terms "center", "vertical", "horizontal", "upper", "lower", "front", "rear", "left", "right" , "Vertical", "horizontal", "top", "bottom", "inner", "outer" and other directions or positional relations are based on the directions or positional relations shown in the drawings, only for the convenience of description The application embodiments and simplified descriptions do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the embodiments of the present application. In addition, the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance.

In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection. Or one-piece connection; it can be mechanical connection or electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above-mentioned terms in the embodiments of the present application can be understood in specific situations.

In the embodiments of this application, unless otherwise clearly defined and defined, the first feature “on” or “under” the second feature may be in direct contact with the first and second features, or the first and second features may pass through the middle. Indirect media contact. Moreover, the "above", "above" and "above" of the first feature on the second feature may mean that the first feature is directly above or diagonally above the second feature, or it simply means that the level of the first feature is higher than the second feature. The “below”, “below” and “below” of the second feature of the first feature may be that the first feature is directly below or obliquely below the second feature, or it simply means that the level of the first feature is smaller than the second feature.

In the description of this specification, descriptions with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean specific features described in conjunction with the embodiment or example , The structure, materials, or characteristics are included in at least one embodiment or example of the embodiments of the present application. 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 can combine and combine the different embodiments or examples and the features of the different embodiments or examples described in this specification without contradicting each other.

As shown in Figures 1 to 5, an embodiment of the present application provides a liquid storage and oil separation device. The device includes a housing 1 and a partition assembly. The top surface of the housing 1 is inserted with a first connector 3 and a second connector. Connecting pipe 4, the bottom surface of the housing 1 is inserted with a third connecting pipe 5 and a fourth connecting pipe 6, and the part of the third connecting pipe 5 extending into the housing 1 is provided with an oil return hole 5.1, that is to say, the side wall of the third connecting pipe 5 is opened There is an oil return hole 5.1, the oil return hole 5.1 is located in the housing 1; the partition assembly is located in the housing 1, and the partition assembly divides the housing 1 into a gas-liquid separation chamber 1.1 and an oil separation chamber 1.2; inside the partition assembly It has a cavity 2.3. The lower part of the partition assembly is provided with an oil passage 2.4 for communicating the gas-liquid separation chamber 1.1 and the oil separation chamber 1.2; the first connection pipe 3 and the third connection pipe 5 are respectively connected to the gas-liquid separation chamber 1.1, and the second The connecting pipe 4 and the fourth connecting pipe 6 are respectively communicated with the oil separation chamber 1.2, and the ports of the fourth connecting pipe 6 extending into the housing 1 are located above the oil passage 2.4 and the oil return hole 5.1.

The following takes an air conditioning system as an example to describe the working principle of the liquid storage and oil separation device in the embodiment of the present application:

When installing, connect the first connecting pipe 3 with the outlet of the evaporator, connect the third connecting pipe 5 with the suction port of the compressor; connect the fourth connecting pipe 6 with the compressor exhaust port, and connect the second connecting pipe 4 with the condenser The inlet of the device is connected.

For the gas-liquid separation chamber 1.1 when the air-conditioning system is running: the refrigerant flowing through the evaporator absorbs heat from the room and then enters the gas-liquid separation chamber 1.1 through the first connecting pipe 3. The refrigerant gas entering the gas-liquid separation chamber 1.1 may be mixed with refrigerant droplets and lubricating oil. Because the density of the refrigerant gas is very small, the refrigerant gas will be suspended in the upper part of the gas-liquid separation chamber 1.1, and the refrigerant droplets The density of refrigerant and lubricating oil is relatively high, so that part of the refrigerant droplets and lubricating oil will directly fall to the bottom of the gas-liquid separation chamber 1.1 under its own gravity, and the remaining refrigerant droplets and lubricating oil will hit the gas-liquid separation chamber. The wall surface of 1.1 will then slide along the wall surface of the gas-liquid separation chamber 1.1 into its bottom. When the compressor sucks in, the refrigerant gas in the gas-liquid separation chamber 1.1 will enter the third connecting pipe 5 under the action of the compressor suction pressure. At the same time, the lubricating oil deposited on the bottom of the gas-liquid separation chamber 1.1 will be It will flow into the third connecting pipe 5 through the oil return hole 5.1, and the refrigerant gas and lubricating oil will enter the suction port of the compressor after being mixed in the third connecting pipe 5.

It should be noted that due to the relatively small diameter of the oil return hole 5.1, during the compressor suction process, only a small amount of refrigerant liquid deposited on the bottom of the gas-liquid separation chamber 1.1 enters the third connecting pipe 5 through the oil return hole 5.1, and Part of the refrigerant liquid entering the third connecting pipe 5 will volatilize into refrigerant gas, and the remaining very small amount of refrigerant liquid will enter the compressor but will not cause liquid shock to the compressor.

Of course, in order to improve the oil separation effect of the gas-liquid separation chamber 1.1, the gas-liquid separation chamber 1.1 may also be provided with a first oil filter 7 which divides the gas-liquid separation chamber 1.1 into two chambers. The first oil filter 7 can divide the gas-liquid separation chamber 1.1 in a variety of ways. For example, as shown in Figure 4, the first oil filter 7 separates the gas-liquid separation chamber 1.1 laterally, and divides the gas-liquid separation chamber 1.1 into upper and lower chambers. A chamber, that is, the first oil filter 7 extends from the side wall of the gas-liquid separation chamber 1.1 to the partition assembly. Of course, the first oil filter 7 can also longitudinally separate the gas-liquid separation chamber 1.1, dividing the gas-liquid separation chamber 1.1 into two left and right chambers, that is, the first oil filter 7 is separated from the top of the gas-liquid separation chamber 1.1. The surface extends to its bottom surface.

When the first oil filter element 7 is provided in the gas-liquid separation chamber 1.1, the first connection pipe 3 and the third connection pipe 5 need to be located on both sides of the first oil filter element 7, that is, the first connection pipe 3 extends into the housing The port of 1 is located in one of the chambers of the gas-liquid separation chamber 1.1, and the port of the second connecting pipe 4 extending into the housing 1 is located in the other chamber of the gas-liquid separation chamber 1.1. Therefore, after the exhaust gas of the evaporator enters the gas-liquid separation chamber 1.1 through the first connecting pipe 3, the refrigerant droplets and lubricating oil contained in the refrigerant gas are separated under the interception of the first oil filter member 7, and Finally, it falls into the bottom of the gas-liquid separation chamber 1.1 under its own gravity. Wherein, the first oil filter 7 can be a single-layer or multi-layer filter screen, or a porous sponge. The first oil filter 7 with the above structure does not constitute a limitation to the protection scope of the present application.

For the oil separation chamber 1.2 when the air-conditioning system is running: the low-temperature and low-pressure refrigerant gas is transformed into high-temperature and high-pressure refrigerant gas after the compressor is compressed to perform work. The high-temperature and high-pressure refrigerant gas discharged from the compressor exhaust port passes through the fourth Take the pipe 6 into the oil separation chamber 1.2. The refrigerant gas entering the oil separation chamber 1.2 may be mixed with compressor lubricating oil. Because the density of the refrigerant gas is very small, the refrigerant gas will be suspended in the upper part of the oil separation chamber 1.2 and gradually flow into the condenser through the second connecting pipe 4. The high density of lubricating oil will directly fall to the bottom of the oil separation chamber 1.2 under the action of its own gravity. When the level of lubricating oil deposited at the bottom of the oil separation chamber 1.2 reaches the position of the oil passage 2.4, the lubricating oil in the oil separation chamber 1.2 will flow into the gas-liquid separation chamber 1.1 through the oil passage 2.4, and finally pass through the third connecting pipe 5 Go back to the compressor. Due to the cavity 2.3 inside the partition assembly, the heat transfer between the oil separation chamber 1.2 and the gas-liquid separation chamber 1.1 is poor. In the above oil separation process, the high temperature and high pressure refrigerant gas in the oil separation chamber 1.2 can only remove a small amount of The heat is transferred to the low-temperature refrigerant gas in the gas-liquid separation chamber 1.1 through the baffle assembly, so that the exhaust gas of the evaporator will not change significantly after the gas-liquid separation is carried out in the gas-liquid separation chamber 1.1, which can avoid The intake air temperature of the compressor is too high.

Of course, in order to improve the oil separation effect of the oil separation chamber 1.2, a second oil filter 8 may be further provided in the oil separation chamber 1.2, and the second oil filter 8 divides the oil separation chamber 1.2 into two chambers. The second oil filter 8 can divide the oil separation chamber 1.2 in various ways. For example, as shown in Fig. 4, the second oil filter 8 separates the oil separation chamber 1.2 laterally, and divides the oil separation chamber 1.2 into two upper and lower chambers. That is, the second oil filter 8 extends from the side wall of the oil separation chamber 1.2 to the partition assembly. Of course, the second oil filter 8 can also longitudinally separate the oil separation chamber 1.2, dividing the oil separation chamber 1.2 into two left and right chambers, that is, the second oil filter 8 extends from the top surface of the oil separation chamber 1.2 to Its underside.

When the second oil filter 8 is provided in the oil separation chamber 1.2, the second connection pipe 4 and the fourth connection pipe 6 are located on both sides of the second oil filter 8, that is, the second connection pipe 4 extends into the housing 1 The port is located in one of the chambers of the oil separation chamber 1.2, and the port of the fourth connector 6 extending into the housing 1 is located in the other chamber of the oil separation chamber 1.2. As a result, after the compressor exhaust enters the oil separation chamber 1.2 through the fourth connecting pipe 6, the lubricating oil contained in the refrigerant gas is separated under the interception of the second oil filter 8, and finally falls into the oil under its own gravity. The bottom of the oil separation chamber 1.2. Wherein, the second oil filter 8 can be a single-layer or multi-layer filter screen, or a porous sponge. The second oil filter 8 with the above structure does not constitute a limitation to the protection scope of the present application.

In addition, it should be noted that in addition to separating the lubricating oil in the compressor exhaust, the oil separation chamber 1.2 can also be used to separate the lubricating oil carried by the exhaust in the intermediate return air flow path of the air conditioning system. For example, when the air conditioning system includes the supplemental air enthalpy increasing branch, the oil separation chamber 1.2 may be used to separate the lubricating oil in the exhaust of the supplemental air enthalpy increasing branch. Specifically, one end of the supplemental gas enthalpy increasing branch is in communication with the outlet of the condenser, the other end of the supplementary gas enthalpy increasing branch is in communication with the second connecting pipe 4, and the fourth connecting pipe 6 is in communication with the compressor's supplementary air port.

Therefore, the refrigerant gas discharged from the supplemental gas enthalpy branch enters the oil separation chamber 1.2 through the second connecting pipe 4. If the exhaust of the supplementary gas enthalpy branch contains lubricating oil, part of the lubricating oil will act on its own gravity. It drops directly to the bottom of the oil separation chamber 1.2. After hitting the wall of the oil separation chamber 1.2, the remaining lubricating oil slides along the wall of the oil separation chamber 1.2 to the bottom of the oil separation chamber 1.2, while the refrigerant gas is suspended in the oil separation chamber 1.2. The upper part. When the compressor sucks in, the refrigerant gas in the oil separation chamber 1.2 will enter the fourth connecting pipe 6. When the level of lubricating oil deposited at the bottom of the oil separation chamber 1.2 reaches the position of the oil passage 2.4, the lubricating oil in the oil separation chamber 1.2 will flow into the gas-liquid separation chamber 1.1 through the oil passage 2.4, and finally pass through the third connecting pipe 5 Go back to the compressor. In the same way, due to the existence of the cavity 2.3 inside the partition assembly, in the above oil separation process, the refrigerant gas in the oil separation chamber 1.2 can only transfer a small amount of heat through the partition assembly to the low-temperature refrigeration in the gas-liquid separation chamber 1.1 Therefore, the temperature of the exhaust gas of the evaporator will not change greatly after the gas-liquid separation is carried out in the gas-liquid separation chamber 1.1, thereby avoiding the compressor's intake air temperature from being too high. Of course, in order to improve the oil separation effect of the oil separation chamber 1.2 on the exhaust of the supplementary air and enthalpy increase branch, a second oil filter 8 may also be provided in the oil separation chamber 1.2.

In addition, when manufacturing the liquid storage and oil separation device in the embodiment of the present application, the staff can change the gas-liquid separation by adjusting the length of the third connecting pipe 5 extending into the housing 1 and the opening positions of the oil return hole 5.1 and the oil passage 2.4. The maximum oil storage capacity of the cavity 1.1. When the third connecting pipe 5 extends into the housing 1, the greater the distance between the oil return hole 5.1 and the oil passage 2.4 and the bottom surface of the housing 1, the greater the maximum oil storage capacity of the gas-liquid separation chamber 1.1. Wherein, in one embodiment, the oil return hole 5.1 and the oil passage 2.4 are located at the same height or below the oil passage 2.4. Of course, the opening position of the oil passage 2.4 will also directly affect the maximum oil storage capacity of the oil separation chamber 1.2. The greater the distance between the oil passage 2.4 and the bottom surface of the housing 1, the greater the maximum oil storage capacity of the oil separation chamber 1.2. Larger, conversely, smaller. In addition, the size of the oil passage 2.4 will directly affect the flow rate of the lubricating oil stored in the oil separation chamber 1.2 into the gas-liquid separation chamber 1.1 per unit time. The size of the oil return hole 5.1 will directly affect the flow rate of the lubricating oil stored in the gas-liquid separation chamber 1.1 into the compressor through the third connecting pipe 5 per unit time.

Among them, in an embodiment, the diameter of the oil return hole 5.1 and/or the oil passage 2.4 is 1 mm to 3 mm, so as to control the lubricating oil to flow at a better flow rate. In addition, when manufacturing the liquid storage and oil separation device in the embodiment of the present application, the staff can also change the relative size of the gas-liquid separation chamber 1.1 and the oil separation chamber 1.2 by adjusting the position of the partition assembly in the housing 1. At the same time, the staff can also change the insulation performance of the partition assembly by adjusting the distance between the first partition 2.1 and the second partition 2.2.

Further, the baffle assembly in the embodiment of the present application can take various forms, for example:

Form one, the partition assembly includes a first partition 2.1 and a second partition 2.2 that are parallel to each other. There is a gap between the first partition 2.1 and the second partition 2.2 to form a cavity 2.3, the first partition 2.1 and the second partition 2.2 The lower part of the two partitions 2.2 is provided with oil passing holes 2.4. At this time, the first partition 2.1 and the second partition 2.2 may be flat plates or arc-shaped plates. For example, as shown in Figure 4, the first partition 2.1 and the second partition 2.2 are both flat plates, and the first partition 2.1 and the second partition 2.2 jointly separate the housing 1 into gas-liquid separation from left to right. Cavity 1.1, cavity 2.3 and oil separation cavity 1.2. Of course, the first partition 2.1 and the second partition 2.2 may also be arc-shaped plates. For example, as shown in FIG. 6, the cross-sectional shapes of the first partition 2.1 and the second partition 2.2 are both U-shaped. The first partition 2.1 is buckled on the side wall of the housing 1, and the second partition 2.2 is arranged on the outside of the first partition 2.1. At this time, a cavity 2.3 is formed between the first partition 2.1 and the second partition 2.2, and the side of the first partition 2.1 facing away from the second partition 2.2 is enclosed with the inner wall of the housing 1 to form a gas-liquid separation chamber 1.1. The side of the second partition 2.2 facing away from the first partition 2.1 and the inner wall of the housing 1 are jointly enclosed to form an oil separation chamber 1.2. In addition, the cross-sectional shapes of the first partition 2.1 and the second partition 2.2 may both be annular. The space formed by the first partition 2.1 is a gas-liquid separation chamber 1.1, a cavity 2.3 is formed between the first partition 2.1 and the second partition 2.2, and the second partition 2.2 faces the side of the first partition 2.1 Together with the inner wall of the housing 1, an oil separation cavity 1.2 is formed. Compared with arc-shaped plates, when the first partition 2.1 and the second partition 2.2 are flat plates, it is easier to adjust the relative sizes of the oil separation chamber 1.2 and the gas-liquid separation chamber 1.1 in the manufacturing stage. Wherein, the transverse cross-sectional shape of the housing 1 can be, but is not limited to, a circle, an ellipse or a polygon.

Form two, the partition assembly includes a first partition 2.1 and a second partition 2.2 covering one side of the first partition 2.1, the side of the first partition 2.1 facing the second partition 2.2 and the second partition 2.2 The side facing the first partition 2.1 is provided with grooves, and the two grooves are jointly enclosed to form a cavity 2.3.

Form three, the baffle assembly is a closed cavity with a cavity 2.3 inside.

Wherein, in an embodiment, the material of the first partition 2.1 and the second partition 2.2 is a heat insulating material. It should be noted that the partition assembly with the above structure does not constitute a limitation on the protection scope of the present application.

In addition, an embodiment of the present application also provides a compressor assembly, which includes a compressor and the above-mentioned liquid storage and oil separation device, the third connecting pipe 5 is in communication with the suction port of the compressor, and the fourth connecting pipe 6 is connected to the compressor. The exhaust port of the compressor or the air supply port of the compressor are connected. The structure and principle of the liquid storage and oil separation device in the compression assembly are the same as the above, and will not be repeated here. It can be seen that the compressor assembly in the embodiment of the present application can not only realize the two functions of gas-liquid separation and oil separation, save installation space and reduce costs by using the above-mentioned liquid storage and oil separation device, but also can prevent the compressor's intake air temperature from being too high. high.

The embodiment of the present application also provides a heat exchange system. The heat exchange system includes an evaporator, a condenser, a compressor assembly and a throttling device, and the compressor assembly is the above-mentioned compressor assembly. The oil separation chamber 1.2 in the liquid storage oil separator can be used as the exhaust oil separator of the compressor, and also can be used as the exhaust oil separator of the intermediate return air flow path, such as the supplementary gas and enthalpy branch.

Taking the most basic heat exchange system as an example, when the oil separation chamber 1.2 is used as the exhaust oil separator of the compressor, the first connection pipe 3 is connected to the outlet of the evaporator, and the third connection pipe 5 is connected to the suction port of the compressor The fourth connecting pipe 6 communicates with the exhaust port of the compressor, and the second connecting pipe 4 communicates with the inlet of the condenser; the outlet of the condenser communicates with the inlet of the evaporator through a throttling device.

Take the heat exchange system with the supplemental gas and enthalpy branch as an example. In the case that the oil separation chamber 1.2 is used as the exhaust oil separator of the supplementary gas and enthalpy branch, the first connecting pipe 3 is connected to the outlet of the evaporator, and the third The connection pipe 5 is connected with the suction port of the compressor; the compressor discharge port is connected with the inlet of the condenser, the outlet of the condenser is connected with the second connection pipe 4 through the supplementary gas enthalpy branch, and the compressor’s supplementary port is connected with the fourth Take over 6 to communicate. In the following, the connection relationship between the air supply and enthalpy increase branch including a throttle valve and an economizer is described as an example: the condenser's exhaust is divided into the main circuit and the auxiliary circuit, and the refrigerant in the main circuit is directly When entering the economizer, the refrigerant in the auxiliary circuit also enters the economizer after being throttled by the throttle valve. After the heat exchange of the two refrigerants in the economizer, the refrigerant in the auxiliary circuit heats up and turns into refrigerant gas that enters the compressor inlet through the second connecting pipe 4, and the refrigerant in the main circuit heats and cools and turns into supercooled refrigerant. After the liquid enters the evaporator inlet through the throttling device.

Since the structure and principle of the liquid storage and oil separation device in the heat exchange system are the same as the above, it will not be repeated here. It can be seen that the heat exchange system in the embodiment of the present application can not only realize the two functions of gas-liquid separation and oil separation, save installation space and reduce costs by adopting the above-mentioned liquid storage and oil separation device, but also can prevent the compressor's intake air temperature from being too high. High, improve refrigeration efficiency.

An embodiment of the present application also provides an electrical device, which includes the compressor assembly described above. Among them, the electrical equipment can be, but not limited to, refrigeration equipment, heat pump dryers, washing machines, heat pump water heaters, or heat pump dishwashers. Among them, the refrigeration equipment can be, but not limited to, household air conditioners, central air conditioners or refrigerators.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the application, but not to limit them; although the application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions described in the foregoing embodiments are modified, or some of the technical features are equivalently replaced; these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the respective embodiments of the application.

Claims (14)

1. A liquid storage and oil separation device, characterized in that it comprises:

   A housing, a first connection pipe and a second connection pipe are inserted on the top surface, a third connection pipe and a fourth connection pipe are inserted on the bottom surface, and the part of the third connection pipe extending into the housing is provided with an oil return hole;

   The partition assembly is arranged in the housing and is used to separate the housing into a gas-liquid separation cavity and an oil separation cavity; the partition assembly has a cavity inside, and the lower part of the partition assembly is provided with a communication The gas-liquid separation cavity and the oil passage hole of the oil separation cavity; the first connection pipe and the third connection pipe are respectively communicated with the gas-liquid separation cavity, and the second connection pipe and the fourth connection pipe are respectively In communication with the oil separation chamber, the port of the fourth connecting pipe extending into the housing is located above the oil passage hole and the oil return hole.
2. The liquid storage and oil separation device according to claim 1, wherein:

   The partition assembly includes a first partition and a second partition that are parallel to each other, a gap is formed between the first partition and the second partition to form the cavity, the first partition and The lower part of the second partition board is provided with the oil passing hole.
3. The liquid storage and oil separation device according to claim 2, wherein:

   The first partition and the second partition are flat plates or arc-shaped plates.
4. The liquid storage and oil separation device according to claim 3, wherein:

   The cross-sectional shape of the arc-shaped plate is U-shaped or ring-shaped.
5. The liquid storage and oil separation device according to any one of claims 1 to 4, further comprising a first oil filter element arranged in the gas-liquid separation cavity, and the first oil filter element separates the The gas-liquid separation chamber is divided into two chambers, and the first connecting pipe and the third connecting pipe are respectively located on two sides of the first oil filter.
6. The liquid storage and oil separation device according to claim 5, wherein:

   The first oil filter element extends from the top surface of the gas-liquid separation chamber to the bottom surface thereof, or the first oil filter element extends from the side wall of the gas-liquid separation chamber to the partition assembly.
7. The liquid storage and oil separation device according to any one of claims 1 to 4, further comprising a second oil filter element arranged in the oil separation cavity, and the second oil filter element removes the oil The separation chamber is divided into two chambers, and the second connection pipe and the fourth connection pipe are respectively located on both sides of the second oil filter element.
8. The liquid storage and oil separation device according to claim 7, wherein:

   The second oil filter element extends from the top surface of the oil separation chamber to the bottom surface thereof, or the second oil filter element extends from the side wall of the oil separation chamber to the partition assembly.
9. A compressor assembly, characterized in that:

   It includes a compressor and the liquid storage and oil separation device according to any one of claims 1 to 8, the third connecting pipe is in communication with the suction port of the compressor, and the fourth connecting pipe is connected to the exhaust of the compressor. The air port or the air supply port of the compressor is connected.
10. A heat exchange system includes an evaporator, a condenser, a compressor assembly and a throttling device, and is characterized in that:

    The compressor assembly is the compressor assembly of claim 9, and the first connecting pipe is in communication with the outlet of the evaporator.
11. The heat exchange system according to claim 10, wherein:

    In the case that the fourth connecting pipe is in communication with the exhaust port of the compressor, the second connecting pipe is in communication with the inlet of the condenser.
12. The heat exchange system according to claim 10, wherein:

    In the case that the fourth connecting pipe is in communication with the air supply port of the compressor, the heat exchange system further includes an air supply and enthalpy increase branch, one end of the air supply and enthalpy increase branch is connected to the outlet of the condenser Connected, the other end of the supplementary gas enthalpy increasing branch is in communication with the second connecting pipe.
13. An electrical equipment, characterized in that:

    Including the compressor assembly of claim 9.
14. The electrical equipment according to claim 13, wherein:

    The electrical equipment is a refrigeration equipment, a heat pump dryer, a washing machine, a heat pump water heater or a heat pump dishwasher.

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