CN212481768U

CN212481768U - Gas-liquid separator and air conditioner

Info

Publication number: CN212481768U
Application number: CN202021211359.0U
Authority: CN
Inventors: 张铁钢; 王命仁; 李宏伟; 劳同炳; 崔春雷
Original assignee: Midea Group Co Ltd; GD Midea Heating and Ventilating Equipment Co Ltd
Current assignee: Midea Group Co Ltd; GD Midea Heating and Ventilating Equipment Co Ltd; Guangdong Midea HVAC Equipment Co Ltd
Priority date: 2020-06-24
Filing date: 2020-06-24
Publication date: 2021-02-05
Anticipated expiration: 2030-06-24

Abstract

The application provides a gas-liquid separator and an air conditioner having the same. The gas-liquid separator comprises a tank body, an air inlet pipe, an air outlet pipe and an oil return assembly; the tank body is provided with a gas-liquid separation cavity, and a tank top end and a tank bottom end which are positioned at two opposite ends of the gas-liquid separation cavity; the outlet end of the gas inlet pipe is positioned in the gas-liquid separation cavity, the inlet end of the gas inlet pipe is positioned in the gas-liquid separation cavity at the inlet end of the top end of the pipe, which extends out of the gas outlet pipe, the outlet end of the gas outlet pipe extends out of the top end of the tank, and a second oil return hole is formed in a pipeline, which is arranged in the gas-liquid separation cavity, of the gas outlet; the oil return assembly comprises an oil return pipe, the inlet end of the oil return pipe extends into the gas-liquid separation cavity from the bottom end of the tank and is located below the second oil return hole, the outlet end of the oil return pipe is provided with a first oil return hole, and the first oil return hole is located outside the tank. The application provides a vapour and liquid separator has reached reduce cost and the purpose of the maintenance of being convenient for through the mode with first oil return hole is external.

Description

Gas-liquid separator and air conditioner

Technical Field

The application belongs to the technical field of refrigeration equipment, and particularly relates to a gas-liquid separator and an air conditioner.

Background

In a common refrigeration system at present, such as an air conditioner, a gas-liquid separator is an important component, and has the function of performing gas-liquid separation on a small amount of incompletely evaporated refrigerant returning from an evaporator, so that the liquid impact phenomenon caused by the suction of the liquid refrigerant into a compressor can be avoided, and the compressor is prevented from being damaged due to the liquid impact. And the gas-liquid separator is connected with the compressor through an oil return pipe so as to ensure the normal operation of the compressor. However, in practical use, since the conventional gas-liquid separator usually has an oil return hole formed therein, at least the following problems are caused: firstly, as the size difference of oil return holes arranged in the gas-liquid separator is very small, the oil return holes are difficult to distinguish from the appearance, so that suppliers of the gas-liquid separator are difficult to distinguish during manufacturing, the quality is difficult to check, and the manufacturing rejection rate is high; secondly, for manufacturers of the whole machine, due to the difference of sizes of the oil return holes, the tank bodies with different specifications need to be configured, so that the tank bodies are various in types and high in storage and distribution cost; thirdly, when the market maintenance, if the oil return hole is dirty and blocked, the whole tank body needs to be replaced, and the maintenance cost is high.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the application is to provide a gas-liquid separator to solve the technical problem that the maintenance that exists among the prior art because of the oil gallery sets up inside gas-liquid separator and causes is inconvenient, the storage delivery cost is high and the cost of maintenance is high.

In order to achieve the purpose, the technical scheme adopted by the application is as follows: provided is a gas-liquid separator including:

the tank body is provided with a gas-liquid separation cavity, and a tank top end and a tank bottom end which are positioned at two opposite ends of the gas-liquid separation cavity;

the outlet end of the gas inlet pipe is positioned in the gas-liquid separation cavity, and the inlet end of the gas inlet pipe extends out of the top end of the tank;

the inlet end of the gas outlet pipe is positioned in the gas-liquid separation cavity, the outlet end of the gas outlet pipe extends out of the top end of the tank, and a second oil return hole is formed in a pipeline, which is arranged in the gas-liquid separation cavity, of the gas outlet pipe; and the number of the first and second groups,

the oil return assembly comprises an oil return pipe, the inlet end of the oil return pipe extends into the gas-liquid separation cavity from the bottom end of the tank and is located below the second oil return hole, the outlet end of the oil return pipe is provided with a first oil return hole, and the first oil return hole is located outside the tank.

Optionally, the oil return assembly further includes a filter member disposed on the oil return pipe, and the filter member is disposed at the first oil return hole.

Optionally, the oil return pipe comprises a first oil return pipe section and a second oil return pipe section, and an inner diameter of the first oil return pipe section is larger than an inner diameter of the second oil return pipe section;

one end of the second oil return pipe section extends into the tank bottom end, the other end of the second oil return pipe section is connected with the first oil return pipe section, the other end of the tank bottom end, far away from the first oil return pipe section, is provided with the first oil return hole, and the filter element is arranged in the inner cavity of the first oil return pipe section.

Optionally, in the up-down direction, the inlet end of the oil return pipe is located above the lowest position of the cavity bottom wall surface of the gas-liquid separation cavity.

Optionally, the bottom wall of the gas-liquid separation chamber is a concave arc surface, and the inlet end of the oil return pipe penetrates into the gas-liquid separation chamber through one side of the center of the arc surface.

Optionally, the air outlet pipe comprises a straight pipe section and a U-shaped bend section which are connected with each other, and the second oil return hole is formed in the bottom of the bend section.

Optionally, the straight pipe section and the bent pipe section are connected through a connector.

Optionally, a pipe section of the air inlet pipe extending into the gas-liquid separation cavity is L-shaped, and the air inlet pipe is bent towards the inner side wall of the gas-liquid separation cavity.

Optionally, in the up-down direction, the outlet end of the inlet pipe is located below the inlet end of the outlet pipe.

The application still provides an air conditioner, this air conditioner include the compressor and as before the vapour and liquid separator, the compressor with the intercommunication has between the vapour and liquid separator the outlet duct with return oil pipe.

The application provides a vapour and liquid separator and have this vapour and liquid separator's air conditioner's beneficial effect lies in: compared with the prior art, in the application, the first oil return hole is formed outside the tank body of the gas-liquid separator, and the second oil return hole is formed in the pipeline, in which the gas outlet pipe is arranged in the gas-liquid separation cavity, so that when the air conditioner runs, oil can be returned through the oil return pipe connected with the bottom end of the tank, and the oil return amount is adjusted through the first oil return hole outside the tank body; when the system is abnormal, if the oil level in the gas-liquid separation cavity is higher than the second oil return hole, the excessive oil in the gas-liquid separation cavity can be returned to the compressor through the air outlet pipe through the second oil return hole, the compressor is ensured not to be lack of oil, and the normal operation of the air conditioner is further ensured. In this application, through set up the first oil return hole outside jar body and the cooperation of inside and outside first oil return hole and second oil return hole, this vapour and liquid separator has following advantage from each side reduce cost: firstly, because the first oil return hole which plays a main oil return role is arranged outside the tank body, the tank body with special specification is not required to be configured during design, so that the generalization degree of the tank body is stronger; secondly, because the first oil return hole is arranged externally, when the performance of the air conditioner is matched at the initial development stage, the size of the oil return amount is conveniently controlled by adjusting the size of the external first oil return hole so as to adapt to the air conditioner consisting of compressors in different capacity states, the debugging process is very convenient, and the development period can be effectively shortened; thirdly, when the first oil return hole is dirty and blocked and needs to be maintained, the whole tank body does not need to be replaced, and only the device with the first oil return hole outside the tank body is replaced, so that the maintenance is more convenient and the maintenance cost is lower.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a schematic structural diagram of a gas-liquid separator according to an embodiment of the present application.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Gas-liquid separator	133	Connecting head
110	Tank body	120	Air inlet pipe
				130	Air outlet pipe	140	Oil return assembly
141	Oil return pipe	142	First oil return hole
				111	Gas-liquid separation chamber	112	Tank top
113	Tank bottom end	143	Second oil return hole
				141a	First oil return pipe section	141b	Second oil return pipe section
131	Straight pipe section	132	Bend section

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It should be noted that the terms of orientation such as left, right, up and down in the embodiments of the present application are only relative to each other or are referred to the normal use state of the product, and should not be considered as limiting.

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

The embodiment of the application provides a gas-liquid separator.

Referring to fig. 1, in an embodiment, the gas-liquid separator 100 includes a tank 110, an inlet pipe 120, an outlet pipe 130, and an oil return assembly 140. The tank 110 has a gas-liquid separation chamber 111, and a tank top end 112 and a tank bottom end 113 at opposite ends of the gas-liquid separation chamber; the outlet end of the gas inlet pipe 120 is positioned in the gas-liquid separation chamber 111, and the inlet end of the gas inlet pipe 120 extends out of the top end 112 of the tank; the inlet end of the gas outlet pipe 130 is positioned in the gas-liquid separation cavity 111, the outlet end of the gas outlet pipe 130 extends out of the tank top end 112, and a second oil return hole 143 is formed in a pipeline, arranged in the gas-liquid separation cavity 111, of the gas outlet pipe 130; the oil return assembly 140 includes an oil return pipe 141, an inlet end of the oil return pipe 141 extends from the tank bottom end 113 into the gas-liquid separation chamber 111 and is located below the second oil return hole 143, an outlet end of the oil return pipe 141 is provided with a first oil return hole 142, and the first oil return hole 142 is located outside the tank 110.

It should be noted that the gas-liquid separator 100 is mainly applied to an air conditioner, and of course, other refrigeration systems with appropriate structures may be applied to the technical solution of the present application. In the air conditioner, the gas-liquid separator 100 mainly functions to separate the gas and the liquid of a small amount of incompletely evaporated refrigerant returning from the evaporator, so that the liquid impact phenomenon caused by the liquid refrigerant not sucked into the compressor can be avoided, and the damage of the compressor caused by the liquid impact can be avoided. Further, the tank 110 of the gas-liquid separator 100 is generally shaped like a cylinder and is installed with its axial direction being the up-down direction, and the gas inlet pipe 120 is extended into the gas-liquid separation chamber 111 from the top of the tank. In the up-down direction, the outlet end of the inlet pipe 120 and the inlet end of the outlet pipe 130 are both located above the inlet end of the oil return pipe 141

In this embodiment, since the first oil return hole 142 is disposed outside the tank body 110 of the gas-liquid separator 100, and the second oil return hole 143 is disposed on the pipe of the air outlet pipe 130 disposed in the gas-liquid separation chamber 111, when the air conditioner is in operation, oil can be returned through the oil return pipe 141 connected to the tank bottom end 113, and the oil return amount is adjusted through the first oil return hole 142 outside the tank body 110; when the system is abnormal, if the oil level in the gas-liquid separation cavity 111 is higher than the second oil return hole 143, the excessive oil in the gas-liquid separation cavity 111 can be returned to the compressor through the gas outlet pipe 130 through the second oil return hole 143, so that the compressor is ensured not to be lack of oil, and the normal operation of the air conditioner is further ensured. In the present application, by disposing the first oil return hole 142 outside the tank 110 and fitting the first oil return hole 142 and the second oil return hole 143 inside and outside, the gas-liquid separator 100 has the following advantages of reducing costs in various aspects: firstly, because the first oil return hole 142 which plays a main oil return role is arranged outside the tank body 110, the tank body 110 with special specification is not required to be configured during design, so that the generalization degree of the tank body 110 is stronger; secondly, because the first oil return hole 142 is arranged externally, when the performance of the air conditioner is matched at the initial development stage, the size of the oil return amount is conveniently controlled by adjusting the size of the external first oil return hole 142 so as to adapt to the air conditioner consisting of compressors in different capacity states, the debugging process is very convenient, and the development period can be effectively shortened; thirdly, when the first oil return hole 142 is dirty and needs to be maintained, the whole tank body 110 does not need to be replaced, and only a device with the first oil return hole 142 outside the tank body 110 is replaced, so that the maintenance is more convenient and the maintenance cost is lower.

Further, in the present embodiment, the oil return assembly 140 further includes a filter (not shown) disposed on the oil return pipe 141, and the filter is disposed at the first oil return hole 142. Here, the filter member is mainly used to filter impurities in the liquid passing through the oil return pipe 141, so as to prevent the impurities from entering the compressor and causing damage to the compressor. And the filtering piece is arranged close to the first oil return hole 142, so that the subsequent maintenance and replacement are facilitated.

As shown in fig. 1, in the present embodiment, the oil return pipe 141 includes a first oil return pipe section 141a and a second oil return pipe section 141b, and an inner diameter of the first oil return pipe section 141a is larger than an inner diameter of the second oil return pipe section 141 b; one end of the second oil return pipe section 141b extends into the tank bottom end 113, the other end of the second oil return pipe section 141b is connected with the first oil return pipe section 141a, the other end of the first oil return pipe section 141a, which is far away from the tank bottom end 113, is provided with a first oil return hole 142, and a filter element is arranged in an inner cavity of the first oil return pipe section 141 a. In other words, an inner cavity having a larger inner diameter is formed at the first oil return pipe section 141a to facilitate installation of the filter at the inner cavity. The filter element comprises a filter screen and a filter screen bracket, the filter screen is firmly attached to the filter screen bracket, and the filter screen bracket is fixedly connected with the inner wall of the inner cavity of the first oil return pipe section 141a in a limiting way.

Referring to fig. 1, in the present embodiment, the direction from the top 112 to the bottom 113 of the tank 110 is from top to bottom, and the inlet end of the oil return pipe 141 is located above the lowest position of the bottom wall surface of the gas-liquid separation chamber 111. It can be understood that, since impurities are usually deposited at the bottom of the gas-liquid separation chamber 111, the arrangement can effectively prevent the oil return pipe 141 from being plugged by impurities after extending into the tank 110, and ensure that the pipeline of the oil return pipe 141 is smooth.

Further, in this embodiment, the bottom wall of the gas-liquid separation chamber 111 is a concave arc surface, and the inlet end of the oil return pipe penetrates into the gas-liquid separation chamber 111 through one side of the center of the arc surface, that is, the insertion position of the oil return pipe 141 is located on the area between the lowest point of the center of the arc surface and the outer edge of the arc surface. Of course, the oil return pipe 141 may also be disposed at the lowest point of the center of the arc surface, but in this case, the portion of the oil return pipe 141 extending into the tank 110 needs to be longer to avoid the blockage by the impurities, and in this embodiment, when the oil return pipe 141 is located on the region between the lowest point of the center of the arc surface and the outer edge of the arc surface, the portion of the oil return pipe 141 extending into the tank 110 can be shorter to achieve the effect of avoiding the blockage.

Referring to fig. 1, in the present embodiment, the outlet pipe 130 includes a straight pipe section 131 and a U-shaped bent pipe section 132 connected to each other, and the second oil return hole 143 is disposed at the bottom of the bent pipe section 132. When the system is abnormal, the oil level in the tank 110 is higher than the second oil return hole 143, at this time, the second oil return hole 143 can return the excessive oil in the tank 110 to the compressor through the air outlet pipe 130, so as to ensure that the compressor is not lack of oil, and further ensure the normal operation of the system. Of course, in other embodiments, the second oil return hole 143 may also be disposed in other areas of the elbow section 132, but when the second oil return hole 143 is disposed at the bottom of the elbow section 132, the elbow section 132 does not need to extend into the bottom of the gas-liquid separation chamber 111 as much as possible, and the length of the elbow section 132 can be effectively reduced.

Further, as shown in fig. 1, in the present embodiment, the straight pipe section 131 and the bent pipe section 132 are connected by a connector 133. It should be noted that, in practical production, in order to facilitate welding of the tank body 110 and the outlet pipe 130, the straight pipe section 131 penetrating through the tank top end 112 is made of a copper pipe material, but the cost of the copper pipe is high, and if the elbow section 132 built in the gas-liquid separator 100 is also made of a copper pipe, the overall cost is high, so that the elbow section 132 is made of other pipe materials with low cost to save the material cost, thus, the straight pipe section 131 and the elbow section 132 need to be connected by using the connector 133, and corresponding ports of the straight pipe section 131 and the elbow section 132 are respectively fixedly connected with two ends of the connector 133 by, for example, but not limited to, welding.

Referring to fig. 1, in the present embodiment, a pipe section of the inlet pipe 120 extending into the gas-liquid separation chamber 111 is L-shaped, and the inlet pipe 120 is bent and bent toward an inner side wall of the gas-liquid separation chamber 111 and is far away from an inlet end of the outlet pipe. It can be understood that this arrangement has a certain liquid return prevention effect, and can prevent liquid from entering the air return pipe when the air outlet of the air inlet pipe 120 is opposite to the air inlet of the air return pipe. Further, in the present embodiment, the inlet pipe 120 has an outlet at the outlet end thereof disposed in the gas-liquid separation chamber 111, and the outlet end of the inlet pipe 120 is located below the inlet end of the outlet pipe 130, so as to further improve the liquid return prevention effect of the gas-liquid separator 100.

The present invention further provides an air conditioner, which includes a compressor (not shown) and a gas-liquid separator 100, wherein a gas outlet pipe and an oil return pipe are communicated between the compressor and the gas-liquid separator 100. The specific structure of the gas-liquid separator 100 refers to the above embodiments, and since the air conditioner adopts all technical solutions of all the above embodiments, all the beneficial effects brought by the technical solutions of the above embodiments are also achieved, and are not described in detail herein.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A gas-liquid separator, comprising:

2. The gas-liquid separator of claim 1, wherein the oil return assembly further comprises a filter element disposed on the oil return tube, and wherein the filter element is disposed at the first oil return aperture.

3. The gas-liquid separator of claim 2, wherein the oil return tube comprises a first oil return tube section and a second oil return tube section, the first oil return tube section having a tube inner diameter greater than an inner diameter of the second oil return tube section;

4. The gas-liquid separator according to claim 1, wherein the inlet end of said oil return pipe is located above the lowest portion of the chamber bottom wall surface of said gas-liquid separation chamber in the up-down direction.

5. The gas-liquid separator according to claim 4 wherein the bottom wall of the gas-liquid separation chamber is a concave arc surface, and the inlet end of the oil return pipe penetrates into the gas-liquid separation chamber through one side of the center of the arc surface.

6. The gas-liquid separator according to any one of claims 1 to 5, wherein said outlet duct comprises a straight duct section and a U-shaped elbow section connected to each other, and said second oil return hole is provided at a bottom of said elbow section.

7. The gas-liquid separator of claim 6, wherein the straight tube section and the elbow section are connected by a connector.

8. The gas-liquid separator according to any one of claims 1 to 5, wherein a pipe section of the inlet pipe extending into the gas-liquid separation chamber is L-shaped, and the inlet pipe is bent toward an inner side wall of the gas-liquid separation chamber.

9. The gas-liquid separator of claim 1, wherein the outlet end of the inlet pipe is located below the inlet end of the outlet pipe in an up-down direction.

10. An air conditioner, characterized in that, including compressor and the gas-liquid separator of any claim 1 to 9, said gas outlet pipe and said oil return pipe are connected between said compressor and said gas-liquid separator.