CN217979389U - Gas-liquid separator and refrigerating system thereof - Google Patents

Abstract

The utility model belongs to the technical field of refrigerating system and specifically relates to vapour and liquid separator and refrigerating system thereof. A gas-liquid separator comprises a cylinder body, an inlet pipe and an outlet pipe, wherein a cavity is formed in the cylinder body, and the inlet pipe and the outlet pipe are respectively connected with the cylinder body and communicated with the cavity; the barrel at least comprises a first reducing section and a second reducing section which are communicated with each other, and the first reducing section is relatively positioned above the second reducing section along the axial direction of the barrel; the inlet pipe and the outlet pipe are both positioned on one side of the first necking section away from the second necking section; the liquid storage section is positioned on one side of the second necking section, which is far away from the first necking section, and is communicated with the second necking section; along the axis direction of barrel, the internal diameter of first throat section is toward being close to second throat section direction and is reduced gradually, and the internal diameter of second throat section is toward being close to the direction of first throat section and is reduced gradually, and its advantage is in, first throat section and second throat section can reduce gas and liquid contact to prevent that the liquid in the stock solution section from being influenced the separation effect by gaseous double-entrainment.

Description

Gas-liquid separator and refrigerating system thereof

Technical Field

The utility model belongs to the technical field of refrigerating system and specifically relates to vapour and liquid separator and refrigerating system thereof.

Background

In the refrigerating system, the gas-liquid separator can prevent liquid refrigerant from flowing into the compressor to generate liquid impact during the operation of the refrigerating system, and has the functions of storage, gas-liquid separation, filtration and noise reduction

The existing gas-liquid separator generally rotates refrigerants in different states so as to separate gas and liquid, but the separation effect is poor, and after the gaseous refrigerant and the liquid refrigerant are primarily separated, the liquid refrigerant is still in a rotating state and is easily mixed into the gaseous refrigerant again, so that the separation effect of the gas-liquid separator is influenced.

SUMMERY OF THE UTILITY MODEL

Based on this, the utility model provides a vapour and liquid separator to above-mentioned technical problem, technical scheme as follows:

a gas-liquid separator comprises a cylinder body, an inlet pipe and an outlet pipe, wherein a cavity is formed in the cylinder body, and the inlet pipe and the outlet pipe are respectively connected with the cylinder body and are communicated with the cavity;

the cylinder body comprises a first necking section, a second necking section and a liquid storage section, the first necking section is relatively positioned above the second necking section and communicated with the second necking section along the axial direction of the cylinder body, and the liquid storage section is positioned at one end, far away from the first necking section, of the second necking section and communicated with the second necking section; the inlet pipe is arranged on one side, away from the second necking section, of the first necking section and is communicated with the interior of the first necking section, and one end of the outlet pipe extends into one side, away from the second necking section, of the first necking section through the second necking section;

along the axis direction of the cylinder, the inner diameter of the first reducing section gradually decreases towards the direction close to the second reducing section, and the inner diameter of the second reducing section gradually decreases towards the direction close to the first reducing section.

So set up, because the internal diameter of first throat section reduces towards the direction that is close to the second throat section gradually, so the medium gets into the cavity after, can form two swirl along with the rotation of barrel, and liquid can attach on the inner wall of barrel owing to the effect of centrifugal force, again because the effect of gravity flows down in the stock solution section, and gaseous then can follow the exit tube outflow cavity. Because the inner diameters of the first reducing section and the second reducing section are gradually reduced along the direction towards each other, the contact between gas and liquid in the cavity can be reduced, the secondary entrainment of the gas is avoided, and the separation efficiency of the gas-liquid separator is improved.

In one embodiment, a connecting section is provided between the first reducing section and the second reducing section, and the connecting section is connected with the first reducing section and the second reducing section.

So set up, the linkage segment can increase the distance between first throat section and the second throat section, further reduces gaseous and liquid contact to cause the condition of secondary entrainment, guaranteed separation efficiency.

In one embodiment, the connecting section is in the shape of a straight tube, and the connecting section is coaxial with the cylinder.

So set up, be convenient for process the linkage segment to the linkage segment is better with the axiality of barrel, and liquid is more smooth and easy from the route of first throat section flow direction stock solution section.

In one embodiment, the first throat section is conical in shape, the first throat section having an apex angle α,60 ≦ α ≦ 90 °.

With this arrangement, the conical shape can cause sound reflection and sound interference, thereby reducing noise. If the angle of the vertex angle alpha is too small, the flow of the liquid medium is too fast, and the entrained gas is easy to flow into the liquid storage section together; if the angle of the apex angle α is too large, the liquid medium tends to stay on the inner wall surface of the first throat section, and the separation efficiency is also affected.

In one embodiment, the second throat section is conical in shape with a vertex angle β of 90 ° ≦ β < 180 °.

With the arrangement, when the angle of the vertex angle beta is too small, the liquid storage capacity of the liquid storage section is influenced; when the angle of the vertex angle β is too large, the noise reduction effect is affected.

In one embodiment, the cylinder comprises a gas storage section, the gas storage section is located on one side of the second necking section away from the first necking section and connected with the first necking section, the inlet pipe is located at one end in the cavity and is an inlet, the outlet pipe is located at one end in the cavity and is an outlet, and the inlet and the outlet are both located in the gas storage section and are arranged at intervals with the first necking section.

So set up, because the medium can not be thoroughly separated at once after getting into first throat section, so still have the medium of more gas-liquid mixture state in the first throat section, with import and export and first throat section interval setting, increase the distance between import and export and the first throat section, prevent the medium under the various states and mix, promoted gas-liquid separation's effect.

In one embodiment, the inlet tube is disposed through the sidewall of the gas storage section, and the axis of the inlet intersects with the axis of the gas storage section.

So set up for the orientation of advancing the pipe is just to the axis of gas storage section, thereby strengthens the two swirl effects among the gas-liquid separation process.

In one embodiment, the outlet pipe is coaxial with the gas storage section, the outlet faces away from the first reduced section, and the outlet is farther away from the first reduced section relative to the inlet.

The arrangement prevents the medium from flowing out of the outlet directly without separation after flowing into the chamber from the inlet.

In one embodiment, the gas storage section has the same diameter as the liquid storage section.

So set up, the barrel processing of being convenient for. The gas storage section and the liquid storage section can be formed through the same die and the same process, additional processing steps are not needed, and the processing cost is reduced.

The utility model also provides a refrigerating system, include as above vapour and liquid separator.

Compared with the prior art, the utility model discloses because the internal diameter of first throat section reduces toward the direction that is close to the second throat section gradually, so the medium gets into behind the cavity, can form two swirl along with the rotation of barrel, and liquid can attach on the inner wall of barrel owing to the effect of centrifugal force, again because the effect of gravity flows down in the stock solution section, and gaseous then can follow the exit tube and flow out the cavity. Because the inner diameters of the first reducing section and the second reducing section are gradually reduced along the direction towards each other, the contact between gas and liquid in the cavity can be reduced, the secondary entrainment of the gas is avoided, and the separation efficiency of the gas-liquid separator is improved.

Drawings

Fig. 1 is a sectional view of a gas-liquid separator provided by the present invention;

fig. 2 is a perspective view of the gas-liquid separator provided by the present invention;

fig. 3 is a top view of the gas-liquid separator provided by the present invention.

The symbols in the drawings represent the following meanings:

100. a gas-liquid separator; 10. a cylinder body; 11. a chamber; 12. a gas storage section; 13. a first throat section; 14. a connecting section; 15. a second throat section; 16. a liquid storage section; 20. feeding a pipe; 21. an inlet; 30. discharging a pipe; 31. and (7) an outlet.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiment in many different forms than those described herein and those skilled in the art will be able to make similar modifications without departing from the spirit of the application and therefore the application is not limited to the specific embodiments disclosed below.

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 intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used in the description of the present application are for illustrative purposes only and do not represent the only embodiments.

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 at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact via an intermediate. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or may simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the description of the present application, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 3, the present invention provides a gas-liquid separator 100 for use in a refrigeration system for separating a gas refrigerant and a liquid refrigerant in a mixed state.

A gas-liquid separator 100 comprises a cylinder 10, an inlet pipe 20 and an outlet pipe 30, wherein a cavity 11 is arranged in the cylinder 10, and the inlet pipe 20 and the outlet pipe 30 are respectively connected with the cylinder 10 and communicated with the cavity 11.

The existing gas-liquid separator generally adopts a centrifugal effect to separate gas from liquid, after the gaseous refrigerant and the liquid refrigerant are primarily separated, the liquid refrigerant is easily mixed into the gaseous refrigerant again due to the fact that gas is still in a rotating working state, and the separation effect of the gas-liquid separator is affected.

In view of the above problem, the utility model provides a gas-liquid separator 100, barrel 10 include first throat section 13, second throat section 15 and stock solution section 16, along the axis direction of barrel 10, first throat section 13 is located the top of second throat section 15 relatively and communicates with second throat section 15, stock solution section 16 is located the one end that first throat section 13 was kept away from to second throat section 15 and communicates with second throat section 15; the inlet pipe 20 is arranged on one side of the first reducing section 13 far away from the second reducing section 15 and is communicated with the inside of the first reducing section 13, and one end of the outlet pipe 30 extends into one side of the first reducing section 13 far away from the second reducing section 15 through the second reducing section 15;

wherein, along the axial direction of barrel 10, the internal diameter of first throat section 13 is towards the direction that is close to second throat section 15 and is reduced gradually, and the internal diameter of second throat section 15 is towards the direction that is close to first throat section 13 and is reduced gradually.

Because the internal diameter of first throat section 13 reduces towards the direction that is close to second throat section 15 gradually, so the medium gets into behind the cavity 11, can be owing to rotatory two swirl that forms, liquid can attach on the inner wall of barrel 10 owing to the effect of centrifugal force, again because the effect of gravity flows down in the stock solution section 16, and gaseous then can follow exit tube 30 outflow cavity 11, the liquid that gets into stock solution section 16 no longer receives the influence of gas or air current, avoid gaseous secondary entrainment, the separation efficiency of vapour and liquid separator has been increased. Since the inner diameters of the first and second throat sections 13 and 15 are gradually reduced in the direction toward each other, it is possible to reduce the contact of the gas and the liquid in the chamber 11, avoid the secondary entrainment of the gas, and improve the separation efficiency of the gas-liquid separator 100.

Specifically, the double vortex includes an outer vortex moving axially downward and an inner vortex moving axially upward. During the operation of the gas-liquid separator 100, the gas flow moves inward in the radial direction of the first reducing section 13, thereby forming an inner vortex, then moves upward along the axis of the cylinder 10, and finally flows out of the cylinder 10 from the outlet pipe 30; the liquid part in the medium can generate radial outward movement under the action of rotational inertia and gravity to form an outer vortex, and finally the outer vortex is attached to the inner wall of the cylinder 10, and the liquid medium can flow downwards along the inner wall of the cylinder 10 under the action of gravity, so that a double-vortex phenomenon is formed.

It can be understood that, the barrel 10 may further be provided with a third reducing section (not shown) and a fourth reducing section (not shown), and the third reducing section and the fourth reducing section are arranged in a manner similar to the first reducing section 13 and the second reducing section 15, so as to enhance the separation effect between the liquid medium and the gaseous medium, and further prevent the gaseous medium from carrying the liquid medium again to cause the problem of poor gas-liquid separation effect.

Further, the first and second throat sections 13 and 15 have a conical shape, which can cause sound reflection and sound interference, thereby functioning to reduce noise. During the operation of the gas-liquid separator 100, the sound is muffled twice by the first and second constricted sections 13 and 15, further reducing the noise.

The first necking section 13 has a vertex angle alpha which is more than or equal to 60 degrees and less than or equal to 90 degrees. If the angle of the vertex angle alpha is too small, the flow of the liquid medium is too fast, and the entrained gas is easy to flow into the liquid storage section 16 together; if the angle of the apex angle α is too large, the liquid medium tends to stay on the inner wall surface of the first reducing section 13, and the separation efficiency is also affected.

The vertex angle of the second necking section 15 is beta, and the beta is more than or equal to 90 degrees and less than 180 degrees. With such arrangement, when the angle of the vertex angle beta is too small, the liquid storage capacity of the liquid storage section 16 is affected; when the angle of the vertex angle β is too large, the noise reduction effect is affected.

A connecting section 14 is arranged between the first reducing section 13 and the second reducing section 15, and the connecting section 14 is connected with the first reducing section 13 and the second reducing section 15. The connecting section 14 can increase the distance between the first necking section 13 and the second necking section 15, further reduce the contact of gas and liquid, thereby causing the condition of secondary entrainment and ensuring the separation efficiency.

Specifically, the connecting section 14 is in the shape of a straight pipe, and the connecting section 14 is coaxial with the cylinder 10. So set up, be convenient for process the linkage segment 14 to the linkage segment 14 is better with the axiality of barrel 10, and the route that liquid flows to the stock solution section 16 from first throat section 13 is more smooth. In this embodiment, the connecting section 14 is in a hollow cylindrical shape, and in other embodiments, the cross section of the connecting section 14 may also be square, triangular, elliptical, and the like, which is not limited to the hollow cylindrical shape described in this embodiment, and only needs to be able to flow through the liquid medium separated in the first reducing section 13, and reduce the contact between the liquid medium in the liquid storage section 16 and the gaseous medium above.

The cylinder 10 further comprises a gas storage section 12, the gas storage section 12 is located on one side of the first necking section 13 far away from the second necking section 15 and connected with the first necking section 13, an inlet 21 is located at one end of the inlet pipe 20 located in the cavity 11, an outlet 31 is located at one end of the outlet pipe 30 located in the cavity 11, and the inlet 21 and the outlet 31 are both located in the gas storage section 12 and are spaced from the first necking section 13. During the operation of the gas-liquid separator 100, the gaseous medium will move to the gas storage section 12 due to the effect of the internal vortex, and then flows out of the chamber 11 from the gas storage section 12 through the outlet 31 and the outlet pipe 30, thereby completing the separation of the gaseous medium.

Because the medium can not be thoroughly separated immediately after entering first throat section 13, so still have more gas-liquid mixture state's medium in first throat section 13, set up import 21 and export 31 and first throat section 13 interval, increase the distance between import 21 and export 31 and first throat section 13, prevent the medium under the various states and mix, promoted gas-liquid separation's effect.

Further, referring to fig. 3, the inlet pipe 20 is inserted through the side wall of the gas storage section 12, and the pipe wall of the inlet pipe 20 is tangent to the inner wall of the gas storage section 12, so that the gas-liquid mixed medium entering the cylinder 10 from the inlet pipe 20 is subjected to centrifugal cyclone separation.

The outlet pipe 30 is coaxial with the gas storage section 12, the outlet 31 faces away from the first reduced section 13, and the outlet 31 is further away from the first reduced section 13 relative to the inlet 21, so that the medium is prevented from directly flowing out of the outlet 31 without separation after flowing into the chamber 11 from the inlet 21.

Specifically, the outlet pipe 30 extends into the cavity 11 from the side of the liquid storage section 16 far away from the first necking section 13, penetrates through the liquid storage section 16, the second necking section 15, the connecting section 14 and the first necking section 13, and finally reaches the inside of the gas storage section 12. The outlet pipe 30 is spaced from the inner wall of the connecting section 14 to allow the medium to flow from the first necking section 13 to the liquid storage section 16 through the connecting section 14.

In addition, the diameter of the air storage section 12 is the same as that of the liquid storage section 16, so that the barrel 10 can be conveniently processed. The gas storage section 12 and the liquid storage section 16 can be formed by the same die and process without additional processing steps, thereby reducing the processing cost.

The utility model discloses still provide a refrigerating system, including above vapour and liquid separator 100.

Compared with the prior art, the utility model discloses because the internal diameter of first throat section 13 reduces towards the direction that is close to second throat section 15 gradually, so the medium gets into behind the cavity 11, can form two swirl along with the rotation of barrel 10, and liquid can be attached on the inner wall of barrel 10 owing to the effect of centrifugal force, again because the effect of gravity flows down in stock solution section 16, and gaseous then can follow exit tube 30 and flow out cavity 11. Since the inner diameters of the first and second throat sections 13 and 15 are gradually reduced in the direction toward each other, it is possible to reduce the contact of the gas and the liquid in the chamber 11, avoid the secondary entrainment of the gas, and improve the separation efficiency of the gas-liquid separator 100.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent several embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the concept of the present invention, several variations and modifications can be made, which all fall within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. A gas-liquid separator comprises a cylinder body (10), an inlet pipe (20) and an outlet pipe (30), wherein a cavity (11) is formed in the cylinder body (10), and the inlet pipe (20) and the outlet pipe (30) are respectively connected with the cylinder body (10) and are communicated with the cavity (11);

the device is characterized in that the barrel (10) comprises a first reducing section (13), a second reducing section (15) and a liquid storage section (16), the first reducing section (13) is relatively positioned above the second reducing section (15) along the axial direction of the barrel (10) and is communicated with the second reducing section (15), and the liquid storage section (16) is positioned at one end, far away from the first reducing section (13), of the second reducing section (15) and is communicated with the second reducing section (15); the inlet pipe (20) is arranged on one side, away from the second reducing section (15), of the first reducing section (13) and is communicated with the interior of the first reducing section (13), and one end of the outlet pipe (30) extends into one side, away from the second reducing section (15), of the first reducing section (13) through the second reducing section (15);

wherein, along the axial direction of the cylinder body (10), the inner diameter of the first reducing section (13) is gradually reduced towards the direction close to the second reducing section (15), and the inner diameter of the second reducing section (15) is gradually reduced towards the direction close to the first reducing section (13).

2. The gas-liquid separator according to claim 1, characterized in that a connecting section (14) is provided between the first and second reducing sections (13, 15), said connecting section (14) being connected to the first and second reducing sections (13, 15).

3. The gas-liquid separator according to claim 2, wherein said connecting section (14) is in the shape of a straight tube, said connecting section (14) being coaxial with said barrel (10).

4. The gas-liquid separator according to claim 1, characterized in that said first necking section (13) is conical in shape, said first necking section (13) having an apex angle α,60 ° ≦ α ≦ 90 °.

5. The gas-liquid separator according to claim 1, characterized in that said second reducing section (15) is conical in shape, the apex angle of said second reducing section (15) being β,90 ° ≦ β < 180 °.

6. The gas-liquid separator according to claim 1, wherein the cylinder (10) comprises a gas storage section (12), the gas storage section (12) is located on a side of the first reducing section (13) away from the second reducing section (15) and is connected to the first reducing section (13), an inlet (21) is located at an end of the inlet pipe (20) located in the chamber (11), an outlet (31) is located at an end of the outlet pipe (30) located in the chamber (11), and the inlet (21) and the outlet (31) are both located in the gas storage section (12) and are spaced apart from the first reducing section (13).

7. The gas-liquid separator according to claim 6, wherein the inlet pipe (20) is arranged through the side wall of the gas storage section (12), and the pipe wall of the inlet pipe (20) is tangential to the inner wall of the gas storage section (12).

8. The gas-liquid separator according to claim 6, wherein said outlet pipe (30) is coaxial with said gas storage section (12), said outlet (31) facing away from said first reduced section (13), said outlet (31) being further away from said first reduced section (13) than said inlet (21).

9. The gas-liquid separator of claim 6, wherein the gas storage section (12) has a diameter that is the same as a diameter of the liquid storage section (16).

10. A refrigeration system comprising a gas-liquid separator as claimed in any one of claims 1 to 9.

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