Vapor-liquid separator and air conditioning system

Abstract

The utility model provides a vapor-liquid separator and an air conditioning system. The vapor-liquid separator comprises a pipeline body; a liquid baffle; a baffle; and the left chamber is communicated with the right chamber through the first space and the overflowing hole. According to the vapor-liquid separator and the air conditioning system provided by the utility model, the liquid baffle plate is arranged in the pipeline body, and the overflowing hole is shielded by the baffle plate, so that a vapor-liquid mixture in the pipeline body needs to be collided with the liquid baffle plate or the baffle plate and is baffled, and only the outer diameter size of the pipeline body is needed on the premise of ensuring the separation efficiency; therefore, the problem that in the prior art, the space of a container cavity needs to be used for expansion separation, and large occupied space is needed is solved, the higher separation effect can be achieved in the same installation space, and then the heat exchange efficiency of the air conditioning system is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of vapor-liquid separation, in particular to a vapor-liquid separator and an air-conditioning system. Background Art

[0002] In order to ensure the high-performance operation of the four key components of a commercial air-conditioning unit, namely an evaporator, a compressor, a condenser, and a throttling device, various types of accessories are often provided in the system, and a vapor-liquid separator is one of the important accessories in the system. The main function of the vapor-liquid separator is to separate the gaseous refrigerant with liquid droplets evaporated from the evaporator, realize the vapor-liquid separation of the refrigerant, prevent the gaseous refrigerant from carrying liquid into the compressor, reduce the liquid compression of the compressor and affect the performance of the compressor, and improve the service life of the compressor.

[0003] The vapor-liquid separator in the prior art is generally a cylindrical vertical container. The vapor-liquid mixture to be separated is sent into the vertical container through an inlet pipe. Its working principle is that the high-velocity gaseous refrigerant containing liquid droplets and oil droplets enters the large-space container cavity from the inlet pipe, the volume expands rapidly, and the flow velocity decreases. Due to the action of inertia, the heavy liquid droplets and oil droplets directly drop to the bottom of the inner cavity of the container, while the gaseous refrigerant flows out through the outlet, thus realizing vapor-liquid separation. The larger the volume of the inner cavity of the container, the higher the vapor-liquid separation efficiency.

[0004] However, restricted by the space size requirements of the air-conditioning system, the volume of the vapor-liquid separator is limited and cannot reach a suitable value, resulting in poor separation effect of the vapor-liquid separator and poor heat exchange efficiency of the air-conditioning system. Summary of the Utility Model

[0005] In order to solve the technical problem that the poor vapor-liquid separation effect affects the heat exchange efficiency of the air-conditioning system under the condition of limited space, a vapor-liquid separator and an air-conditioning system are provided, in which a liquid baffle and a baffle are integrated in the pipeline body to be applicable to the situation of limited space and improve the separation efficiency.

[0006] A vapor-liquid separator includes:

[0007] A pipeline body;

[0008] A liquid baffle, which is arranged in the pipeline body, and the liquid baffle divides the pipeline body into a left chamber and a right chamber;

[0009] A baffle, a plurality of flow holes are arranged on the liquid baffle, the baffle corresponds to the flow holes one by one, the baffle is arranged in the left chamber, and there is a first distance between the baffle and the liquid baffle;

[0010] The left chamber is communicated with the right chamber through the first distance and the flow holes.

[0011] The projected area of the baffle on the liquid baffle is greater than or equal to the flow area of the flow-through hole.

[0012] A plurality of guide vanes are arranged in each of the first intervals, and all the guide vanes are annularly distributed with the central axis of the baffle as the axis, and the baffle is arranged on the liquid baffle through the guide vanes.

[0013] The guide vane has a relative first end and a second end, the first end is located at the edge of the baffle, the second end is located between the first end and the central axis of the baffle, and the projections of the second ends of all the guide vanes on the liquid baffle are located inside the flow-through hole.

[0014] An overflow channel is formed between two adjacent guide vanes, and along the direction from the edge of the baffle to the center of the baffle, the flow area of the overflow channel gradually decreases.

[0015] The cross section of the guide vane is one or several of a V shape, a triangle, a trapezoid or a toothed shape structure.

[0016] The steam-liquid separator further includes a connecting pipe, the connecting pipes correspond to the flow-through holes one by one, the connecting pipes are located in the first interval, and the baffle is connected to one end of the connecting pipe far away from the liquid baffle through the guide vanes.

[0017] The steam-liquid separator further includes a flow guide member, the flow guide member is arranged in the left chamber, and the flow guide member is located between the steam inlet and the liquid baffle, and along the direction close to the liquid baffle, the flow area of the flow guide member gradually decreases.

[0018] One end of the flow guide member close to the liquid baffle forms a first projection area on the liquid baffle, and all the flow-through holes are uniformly distributed in the first projection area.

[0019] The steam-liquid separator further includes a steam baffle, the steam baffle is located inside the pipe body, and the inner wall of the steam baffle corresponding to the pipe body encloses a liquid outlet chamber, a liquid outlet hole is arranged on the steam baffle, the liquid outlet hole is located on the windward side of the liquid baffle, and the left chamber is communicated with the liquid outlet chamber through the liquid outlet hole.

[0020] One end of the pipe body is provided with a steam inlet, the other end is provided with a steam outlet, the steam inlet is communicated with the left chamber, the steam outlet is communicated with the right chamber, the number of the liquid baffles is at least two, all the liquid baffles are arranged in parallel along the direction from the steam inlet to the steam outlet, and a buffer chamber is formed between two adjacent liquid baffles, and each buffer chamber is communicated with the liquid outlet chamber through a liquid outlet hole.

[0021] A liquid outlet groove is provided on the pipe body, and the liquid outlet cavity communicates with the outside of the pipe body through the liquid outlet groove.

[0022] The vapor-liquid separator further includes a liquid outlet structure, which is connected to the liquid outlet groove. An upper space and a lower space located below the upper space are formed in the liquid outlet structure. An oil outlet and a liquid outlet are provided on the liquid outlet structure. The oil outlet communicates with the lower space, and the liquid outlet communicates with the upper space.

[0023] The liquid outlet structure includes a liquid outlet housing and a liquid outlet pipe. The upper space and the lower space are formed inside the liquid outlet housing. The liquid outlet pipe is arranged inside the liquid outlet housing, and one end of the liquid outlet pipe communicates with the upper space, and the other end of the liquid outlet pipe forms the liquid outlet at the bottom of the liquid outlet housing.

[0024] Along the direction from the steam inlet to the steam outlet, the number of the flow holes on the baffle plate gradually decreases.

[0025] The vapor-liquid separator further includes a liquid guiding wire, which is arranged on the side wall of the baffle plate facing the left chamber.

[0026] When the vapor-liquid separator is in use, the central axis of the pipe body is parallel to the horizontal plane.

[0027] One end of the pipe body is provided with a steam inlet, and the other end is provided with a steam outlet. The steam inlet communicates with the left chamber, and the steam outlet communicates with the right chamber. The number of the baffle plates is at least two, and all the baffle plates are arranged in parallel along the direction from the steam inlet to the steam outlet. The fluid in the pipe body flows through all the baffle plates in sequence.

[0028] An air conditioning system includes the above-mentioned vapor-liquid separator.

[0029] The vapor-liquid separator and the air conditioning system provided by the present utility model are provided with baffle plates inside the pipe body, and the flow holes are blocked by the baffle plates, forcing the vapor-liquid mixture in the pipe body to collide and deflect with the baffle plates or the baffle. Only the outer diameter size of the pipe body is required on the premise of ensuring the separation efficiency, thereby overcoming the problem in the prior art that a large space occupied by the container cavity is required for expansion separation, and a higher separation effect can be achieved under the same installation space, and further ensuring the heat exchange efficiency of the air conditioning system. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a cross-sectional view of the vapor-liquid separator provided by the embodiment of the present utility model;

[0031] Figure 2Another cross-sectional view of the vapor-liquid separator provided by the embodiment of the present utility model;

[0032] Figure 3 Another cross-sectional view of the vapor-liquid separator provided by the embodiment of the present utility model;

[0033] Figure 4 Schematic structural diagram of the baffle, guide vane and connecting pipe of the vapor-liquid separator provided by the embodiment of the present utility model;

[0034] Figure 5 Cross-sectional view of the baffle, guide vane and connecting pipe of the vapor-liquid separator provided by the embodiment of the present utility model;

[0035] Figure 6 Schematic structural diagram of the guide vane and flow-through channel of the vapor-liquid separator provided by the embodiment of the present utility model;

[0036] Figure 7 Another schematic structural diagram of the guide vane and flow-through channel of the vapor-liquid separator provided by the embodiment of the present utility model;

[0037] Figure 8 Another schematic structural diagram of the guide vane and flow-through channel of the vapor-liquid separator provided by the embodiment of the present utility model;

[0038] Figure 9 Schematic structural diagram of the liquid baffle of the vapor-liquid separator provided by the embodiment of the present utility model;

[0039] Figure 10 Schematic structural diagram of the steam baffle of the vapor-liquid separator provided by the embodiment of the present utility model;

[0040] Figure 11 Cross-sectional view of the liquid outlet pipe of the vapor-liquid separator provided by the embodiment of the present utility model;

[0041] In the figure:

[0042] 1. Pipe body; 11. Steam inlet; 12. Steam outlet; 2. Liquid baffle; 13. Left chamber; 3. Baffle; 21. Flow-through hole; 14. First spacing; 4. Guide vane; 15. Flow-through channel; 5. Connecting pipe; 6. Flow guide member; 7. Steam baffle; 16. Liquid outlet chamber; 71. Liquid outlet hole; 8. Liquid outlet structure; 81. Oil outlet; 82. Liquid outlet; 83. Liquid outlet housing; 84. Liquid outlet pipe; 9. Liquid guide wire. Detailed implementation manners

[0043] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0044] To enable those skilled in the art to better understand the solution of the present utility model, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0045] It should be noted that the terms "first", "second", etc. in the description and claims of the present utility model and the above-mentioned accompanying drawings are used to distinguish similar objects, and do not necessarily need to be used to describe a specific order or sequence. It should be understood that such terms can be interchanged under appropriate circumstances so as to describe the embodiments of the present utility model here. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0046] It should be noted that in the description of the present utility model, the terms indicating directions or positional relationships such as "up", "down", "left", "right", "inside", "outside", etc. are based on the directions or positional relationships shown in the accompanying drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0047] In addition, it should also be noted that in the description of the present utility model, unless otherwise clearly specified and limited, the terms "install", "set", "connect" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and can also be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0048] In the prior art, a vapor-liquid separator is generally a cylindrical vertical container. The vapor-liquid mixture to be separated is sent into the vertical container through a steam inlet pipe. Its working principle is that the high-velocity gaseous refrigerant containing liquid droplets and oil droplets enters the container cavity of the large space from the steam inlet pipe, the volume expands rapidly, and the flow velocity decreases. Due to the action of inertial force, the heavy liquid droplets and oil droplets directly drip to the bottom of the inner cavity of the container, while the gaseous refrigerant flows out through the steam outlet, thus realizing vapor-liquid separation. The larger the volume of the inner cavity of the container, the higher the vapor-liquid separation efficiency. However, restricted by the space size requirements of the air-conditioning system, the volume of the vapor-liquid separator is limited and cannot reach a suitable value, resulting in poor separation effect of the vapor-liquid separator and poor heat exchange efficiency of the air-conditioning system. Therefore, the present application provides a vapor-liquid separator as shown in Figures 1 to 11 which includes: a pipe body 1, with a steam inlet 11 provided at one end of the pipe body 1 and a steam outlet 12 provided at the other end; a liquid baffle 2, which is arranged inside the pipe body 1, and the liquid baffle 2 divides the pipe body 1 into a left chamber 13 and a right chamber. The steam inlet 11 is communicated with the left chamber 13, and all the steam outlets 12 are communicated with the right chamber; a baffle 3, a plurality of flow holes 21 are provided on the liquid baffle 2, the baffle 3 corresponds to the flow holes 21 one by one, the baffle 3 is arranged inside the left chamber 13, and there is a first distance 14 between the baffle 3 and the liquid baffle 2; the left chamber 13 is communicated with the right chamber through the first distance 14 and the flow holes 21. A liquid baffle 2 is arranged inside the pipe body 1, and the baffle 3 is used to block the flow holes 21, forcing the vapor-liquid mixture inside the pipe body 1 to collide and deflect with the liquid baffle 2 or the baffle 3. On the premise of ensuring the separation efficiency, only the outer diameter size of the pipe body 1 is required, thus overcoming the problem in the prior art that a large occupied space is required for expansion separation using the space of the container cavity. A higher separation effect can be achieved under the same installation space, thereby ensuring the heat exchange efficiency of the air-conditioning system. The lubricating oil separated after colliding with the liquid baffle 2 and the baffle 3 will drip downward under the action of gravity, so that the lubricating oil can be collected at the bottom of the pipe body 1, thus realizing the separation of the refrigerant and the lubricating oil.

[0049] When using the vapor-liquid separator of the present application, the vapor-liquid separator is arranged between the evaporator and the compressor. Among them, the steam inlet 11 is connected to the pipeline on the side of the steam outlet of the evaporator, and the steam outlet 12 is communicated with the pipeline on the suction side of the compressor, so as to ensure that the refrigerant (vapor-liquid mixture) containing liquid droplets and oil droplets flows into the compressor after being separated by the vapor-liquid separator, ensuring the working reliability of the compressor.

[0050] The projected area of the baffle 3 on the liquid baffle 2 is greater than or equal to the flow area of the flow-through hole 21. The baffle 3 completely shields the flow-through hole 21, so that when the vapor-liquid mixture entering from the steam inlet 11 flows to the liquid baffle 2, it cannot directly pass through the flow-through hole 21, but can only impact the baffle 3 first, collide and then deflect, and finally flow to the flow-through hole 21 through the first spacing 14 and pass through the liquid baffle 2, avoiding the direct passing of the vapor-liquid mixture through the flow-through hole 21, thereby ensuring the separation effect of the vapor-liquid mixture.

[0051] A plurality of guide vanes 4 are arranged in each of the first spacings 14, and all the guide vanes 4 are annularly distributed with the central axis of the baffle 3 as the axis. The baffle 3 is arranged on the liquid baffle 2 through the guide vanes 4. By arranging the guide vanes 4, the vapor-liquid mixture entering the first spacing 14 from different directions is guided, so that the vapor-liquid mixtures in different directions can collide with each other after flowing through the guide vanes 4, further increasing the separation effect of the vapor-liquid mixture. And because the vapor-liquid mixture will flow in all directions of the plane where the liquid baffle 2 is located after colliding with the liquid baffle 2, therefore, only a small part of the vapor-liquid mixture is parallel to the guide vanes 4, and most of the vapor-liquid mixture will still collide with the guide vanes 4, which can further increase the separation effect of the vapor-liquid mixture.

[0052] The guide vane 4 has an opposite first end and second end. The first end is located at the edge of the baffle 3, the second end is located between the first end and the central axis of the baffle 3, and the projections of the second ends of all the guide vanes 4 on the liquid baffle 2 are located inside the flow-through hole 21, providing space for the collision of the vapor-liquid mixture after being guided by the guide vanes 4, ensuring the collision separation effect of this part of the vapor-liquid mixture, and improving the separation efficiency of the vapor-liquid separator.

[0053] An over-flow channel 15 is formed between two adjacent guide vanes 4. Along the direction from the edge of the baffle 3 to the center of the baffle 3, the flow area of the over-flow channel 15 gradually decreases. By using the gradual decrease of the flow area, the flow velocity of the vapor-liquid mixture flowing through the over-flow channel 15 is increased, thereby improving the collision effect of the vapor-liquid mixture at the second end of the guide vane 4 and improving the separation efficiency of the vapor-liquid separator.

[0054] Wherein, the cross section of the guide vane 4 is one or several of a V-shaped, triangular, trapezoidal or toothed structure. That is, the thickness of the guide vane 4 gradually increases from the edge of the baffle 3 to the center of the baffle 3, thereby forming an over-flow channel 15 with a gradually decreasing flow area.

[0055] The vapor-liquid separator further includes a connecting pipe 5, which corresponds to the flow-through holes 21 one by one. The connecting pipe 5 is located within the first spacing 14, and the baffle 3 is connected to one end of the connecting pipe 5 away from the liquid baffle 2 through the guide vanes 4. The vapor-liquid mixture after flowing and colliding through the guide vanes 4 needs to flow through the connecting pipe 5 to the flow-through holes 21. The connecting pipe 5 is used to collect and guide the vapor-liquid mixture after passing through the guide vanes 4, so that the air flow direction of the vapor-liquid mixture when it reaches the flow-through holes 21 is basically perpendicular to the plane where the liquid baffle 2 is located, enabling the vapor-liquid mixture to continue flowing after passing through the liquid baffle 2, ensuring the exhaust pressure and exhaust flow rate of the gas-liquid separator, avoiding problems such as turbulence behind the liquid baffle 2, and also preparing for other separation structures behind the liquid baffle 2, ensuring the working reliability of the vapor-liquid separator.

[0056] Preferably, the connecting pipe 5, the guide vanes 4, and the baffle 3 together form a single part. The length of the guide vanes 4 is the wall thickness of the connecting pipe 5, that is, the first end of the guide vanes 4 is located at the outer wall of the connecting pipe 5, and the second end is located at the inner wall of the connecting pipe 5, so that the inner diameter of the connecting pipe 5 is all used for the collision and flow of the vapor-liquid mixture, ensuring the separation effect and flow effect of the vapor-liquid mixture. The outer wall of the connecting pipe 5 is fitted with the inner surface of the flow-through hole 21, that is, the outer diameter of the connecting pipe 5 is equal to the inner diameter of the flow-through hole 21, facilitating the installation of the connecting pipe 5 and the flow-through hole 21.

[0057] The vapor-liquid separator further includes a flow guiding member 6, which is arranged in the left chamber 13 and is located between the steam inlet 11 and the liquid baffle 2. Along the direction from the steam inlet 11 to the liquid baffle 2, the flow area of the flow guiding member 6 gradually decreases. The flow guiding member 6 is used to accelerate the vapor-liquid mixture entering from the steam inlet 11, so that the vapor-liquid mixture can impact the baffle 3 and the liquid baffle 2 at a faster speed, thereby improving the separation effect of the vapor-liquid mixture.

[0058] One end of the flow guiding member 6 close to the liquid baffle 2 forms a first projection area on the liquid baffle 2. All the flow-through holes 21 are evenly distributed within the first projection area, ensuring that all the vapor-liquid mixture passing through the flow guiding member 6 impacts the area where the flow-through holes 21 are located, so that the vapor-liquid mixture needs to quickly turn and flow towards the first spacing 14 after colliding with the liquid baffle 2, avoiding some of the vapor-liquid mixture impacting on the part of the liquid baffle 2 where there are no flow-through holes 21 and generating turbulence, which affects the flow effect of the vapor-liquid mixture, and further increasing the separation effect of the vapor-liquid mixture.

[0059] Preferably, the shape of the flow guiding member 6 is trumpet-shaped.

[0060] To ensure that all vapor-liquid mixtures flow through the flow guide member 6, the end of the flow guide member 6 is in sealing fit with the inner wall of the pipe body 1. And since the flow area of the flow guide member 6 gradually decreases, the distance between the edge of the end of the flow guide member 6 close to the liquid baffle 2 and the inner wall of the pipe body 1 is relatively large. Therefore, an annular baffle 3 is provided between the edge of the end of the flow guide member 6 close to the liquid baffle 2 and the inner wall of the pipe body 1, and this annular baffle 3 is used to isolate the vapor-liquid mixture to ensure the flow guiding and accelerating effect of the flow guide member 6.

[0061] Since the vapor-liquid mixture will separate out liquid droplets, oil droplets and other liquid fluids, in order to facilitate the collection of this part of the liquid fluid, the vapor-liquid separator further includes a steam baffle 7. The steam baffle 7 is located in the pipe body 1, and the inner wall of the pipe body 1 corresponding to the steam baffle 7 encloses a liquid outlet cavity 16. A liquid outlet hole 71 is provided on the steam baffle 7. The liquid outlet hole 71 is located on the side of the liquid baffle 2 close to the steam inlet 11, and the left chamber 13 is communicated with the liquid outlet cavity 16 through the liquid outlet hole 71. The liquid fluid separated by the liquid baffle 2 and the baffle 3 can flow into the liquid outlet cavity 16 through the liquid outlet hole 71, so as to facilitate the collection and discharge of liquid droplets and oil droplets.

[0062] The number of the liquid baffle 2 is at least two. All the liquid baffle 2 are arranged in parallel along the direction from the steam inlet 11 to the steam outlet 12, and a buffer cavity is formed between two adjacent liquid baffle 2. Each buffer cavity is communicated with the liquid outlet cavity 16 through a liquid outlet hole 71. The vapor-liquid mixture will be separated by all the liquid baffle 2 in turn. And after the gas flows into the buffer cavity, it will also achieve the separation effect due to the reduction of flow velocity and the increase of volume, improving the vapor-liquid separation efficiency. And when the vapor-liquid mixture flows through each liquid baffle 2, liquid fluid will be separated, that is, there will be liquid fluid in each buffer cavity. Therefore, by using the liquid outlet hole 71 to drain the liquid fluid in each buffer cavity into the liquid outlet cavity 16, it is possible to ensure the reliable collection of liquid refrigerant and liquid oil droplets while performing multi-stage separation of the vapor-liquid mixture, and ensure the separation reliability of the vapor-liquid separator.

[0063] A liquid outlet groove is provided on the pipe body 1. The liquid outlet cavity 16 is communicated with the outside of the pipe body 1 through the liquid outlet groove. The liquid fluid collected in the liquid outlet cavity 16 is discharged through the liquid outlet groove for convenient recycling. Preferably, the liquid outlet cavity 16 is located at the lower part of the pipe body 1, and the liquid outlet groove is located at the lowest point of the pipe body 1 to ensure the smooth discharge of the liquid fluid.

[0064] Since there is liquid refrigerant and liquid lubricating oil in the liquid fluid at the separation point, and the liquid refrigerant cannot be sent into the compressor for use, liquid compression of the compressor will cause problems of reduced performance. At the same time, the presence of the liquid refrigerant reduces the concentration of the lubricating oil entering the compressor. The lubricating effect of the low-concentration lubricating oil on the rotating parts of the compressor becomes poor, affecting the service life of the compressor. For this reason, the vapor-liquid separator further includes a liquid outlet structure 8, which is connected to the liquid outlet notch. An upper space and a lower space located below the upper space are formed in the liquid outlet structure 8. An oil outlet 81 and a liquid outlet 82 are provided on the liquid outlet structure 8. The oil outlet 81 communicates with the lower space, and the liquid outlet 82 communicates with the upper space. The liquid outlet structure 8 is used to store the liquid fluid, so that the liquid refrigerant and the liquid lubricating oil in the liquid fluid are naturally stratified. The lubricating oil with a relatively large density will be deposited in the lower space and can finally be discharged through the oil outlet 81, while the liquid refrigerant with a relatively small density will accumulate in the upper space and can finally be discharged through the liquid outlet 82, further realizing the separation of the liquid refrigerant and the liquid lubricating oil, improving the separation effect of the vapor-liquid separator, and ensuring the reliable operation of the compressor connected to the vapor-liquid separator.

[0065] As an implementation manner, the liquid outlet structure 8 includes a liquid outlet housing 83 and a liquid outlet pipe 84. The upper space and the lower space are formed inside the liquid outlet housing 83. The liquid outlet pipe 84 is arranged in the liquid outlet housing 83, and one end of the liquid outlet pipe 84 communicates with the upper space. The other end of the liquid outlet pipe 84 forms the liquid outlet 82 at the bottom of the liquid outlet housing 83. The oil outlet 81 is located on the liquid outlet housing 83 corresponding to the circumference of the liquid outlet pipe 84. There is a height difference between the end of the liquid outlet pipe 84 located inside the liquid outlet housing 83 and the bottom of the liquid outlet housing 83. This height difference enables the liquid above the end of the liquid outlet pipe 84 to flow through the liquid outlet pipe 84, while the liquid within the height range of the liquid outlet pipe 84 cannot enter the liquid outlet pipe 84, thus naturally achieving the purpose of the separated liquid refrigerant and liquid lubricating oil flowing out in different directions, facilitating the recycling of the separated liquid refrigerant and liquid lubricating oil.

[0066] After the vapor-liquid mixture collides with the liquid baffle 2, the separated liquid fluid including the liquid refrigerant and liquid oil droplets will flow downward along the liquid baffle 2. To facilitate the flow of the liquid fluid into the liquid outlet chamber 16, the vapor-liquid separator further includes a liquid guiding wire 9, which is arranged on the side wall of the liquid baffle 2 facing the left chamber 13. The liquid guiding wire 9 is used to guide the liquid fluid, improve the fluidity of the liquid fluid, enable the gaseous refrigerant and the liquid fluid to be separated as soon as possible, and ensure the separation effect of the vapor-liquid mixture.

[0067] Among them, the liquid guiding wire 9 is located between two adjacent liquid passing holes 21. At this time, the liquid guiding wire 9 can not only drain the liquid fluid, but also generate a certain turbulent flow for the vapor-liquid mixture about to flow into the first spacing 14, thereby improving the separation effect of the vapor-liquid mixture.

[0068] Optionally, the liquid passing holes 21 are arranged in a square array. At this time, the liquid guiding wire 9 can be a vertical straight line, which can improve the flow effect of the liquid fluid as much as possible. And the length of the liquid guiding wire 9 is adjusted according to its position.

[0069] The cross-section of the liquid guiding wire 9 is preferably circular. The circular cross-section is beneficial to the condensation formation and flow of liquid droplets, ensuring the reliable flow of the liquid fluid. Moreover, the diameter of the circle is smaller than the minimum distance between two adjacent liquid passing holes 21, so as to prevent the liquid guiding wire 9 from being too close to the edge of the first spacing 14 and affecting the flow effect of the first spacing 14.

[0070] When the vapor-liquid separator is in use, the central axis of the pipe body 1 is parallel to the horizontal plane. At this time, the vapor-liquid mixture will flow horizontally into the pipe body 1 and finally flow out of the pipe body 1 horizontally. The liquid baffle 2 and the baffle 3 are both parallel to the vertical plane, ensuring the collision separation effect on the vapor-liquid mixture, and also being able to improve the downward flow of the liquid fluid under the influence of gravity to separate from the liquid baffle 2, and quickly increasing the separation rate of the liquid fluid from the vapor-liquid mixture. At the same time, the steam baffle 7 and the bottom part of the pipe body 1 enclose a liquid outlet cavity 16, and the liquid fluid can smoothly flow into the liquid outlet cavity 16 under the action of gravity. Preferably, the liquid baffle 2 is located above the steam baffle 7, and a horizontal notch is provided at the lower part of the liquid baffle 2 to cooperate with the steam baffle 7, so that the lower end of the liquid baffle 2 can be well attached to the upper surface of the steam baffle 7. At this time, the edge of the liquid baffle 2 is reliably sealed with the inner wall of the pipe body 1 and the steam baffle 7, which is convenient for configuring the steam baffle 7 and can also ensure the sealing effect between the liquid baffle 2 and the steam baffle 7.

[0071] The number of the liquid baffle 2 is at least two, and all the liquid baffle 2 are arranged in parallel along the direction from the steam inlet 11 to the steam outlet 12, and the fluid in the pipe body 1 flows through all the liquid baffle 2 in sequence. The vapor-liquid mixture will be separated by passing through all the liquid baffle 2 in sequence, thereby further improving the separation effect of the vapor-liquid separator.

[0072] Along the direction from the steam inlet 11 to the steam outlet 12, the number of the flow holes on the liquid baffle 2 gradually decreases. Since the number of the flow holes gradually decreases, the flow area on the liquid baffle 2 will gradually decrease. And the gas-liquid mixture will be separated once when passing through a liquid baffle 2, so that the volume of the gas-liquid mixture will decrease once. Therefore, gradually reducing the flow area on the liquid baffle 2 can make the flow area on the liquid baffle 2 match the volume of the gas-liquid mixture, ensure the flow velocity of the gas-liquid mixture at each liquid baffle 2, and thus ensure the collision separation effect of the liquid baffle 2.

[0073] An air conditioning system includes the above-mentioned gas-liquid separator.

[0074] The above embodiments only represent several implementation manners of the present utility model. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the patent of the present utility model shall be subject to the appended claims.

Claims

1. A vapor-liquid separator, characterized in that: Comprising: A pipe body (1); A liquid baffle (2), which is arranged inside the pipe body (1), and the liquid baffle (2) divides the pipe body (1) into a left chamber (13) and a right chamber; A baffle (3), a plurality of flow holes (21) are arranged on the liquid baffle (2), the baffle (3) corresponds to the flow holes (21) one by one, the baffle (3) is arranged inside the left chamber (13), and there is a first distance (14) between the baffle (3) and the liquid baffle (2); The left chamber (13) communicates with the right chamber through the first distance (14) and the flow holes (21).

2. The vapor-liquid separator according to claim 1, characterized in that: The projected area of the baffle (3) on the liquid baffle (2) is greater than or equal to the flow area of the flow holes (21).

3. The vapor-liquid separator according to claim 1, characterized in that: A plurality of guide vanes (4) are arranged in each of the first distances (14), and all the guide vanes (4) are annularly distributed with the central axis of the baffle (3) as the axis, and the baffle (3) is arranged on the liquid baffle (2) through the guide vanes (4).

4. The vapor-liquid separator according to claim 3, wherein: The guide vane (4) has a relative first end and a second end, the first end is located at the edge of the baffle (3), the second end is located between the first end and the central axis of the baffle (3), and the projections of the second ends of all the guide vanes (4) on the liquid baffle (2) are located inside the flow holes (21).

5. The vapor-liquid separator according to claim 3, wherein: An over-flow channel (15) is formed between two adjacent guide vanes (4), and along the direction from the edge of the baffle (3) to the center of the baffle (3), the flow area of the over-flow channel (15) gradually decreases.

6. The vapor-liquid separator according to claim 5, wherein: The cross-section of the guide vane (4) is one or several of a V-shaped, triangular, trapezoidal or toothed structure.

7. The vapor-liquid separator according to claim 3, wherein: The steam-liquid separator further includes a connecting pipe (5), the connecting pipe (5) corresponds to the flow holes (21) one by one, the connecting pipe (5) is located in the first distance (14), and the baffle (3) is connected to the end of the connecting pipe (5) far from the liquid baffle (2) through the guide vanes (4).

8. The vapor-liquid separator according to claim 1, characterized in that: The steam-liquid separator further includes a guiding member (6), the guiding member (6) is arranged inside the left chamber (13), and along the direction close to the liquid baffle (2), the flow area of the guiding member (6) gradually decreases.

9. The vapor-liquid separator according to claim 8, wherein: One end of the guiding member (6) close to the liquid baffle (2) forms a first projection area on the liquid baffle (2), and all the flow holes (21) are uniformly distributed in the first projection area.

10. The vapor-liquid separator according to claim 1, wherein: The steam-liquid separator further includes a steam baffle (7), the steam baffle (7) is located inside the pipe body (1), and the inner wall of the steam baffle (7) corresponding to the pipe body (1) encloses a liquid outlet chamber (16), a liquid outlet hole (71) is arranged on the steam baffle (7), the liquid outlet hole (71) is located on the windward side of the liquid baffle (2), and the left chamber (13) communicates with the liquid outlet chamber (16) through the liquid outlet hole (71).

11. The vapor-liquid separator according to claim 10, characterized in that: One end of the pipe body (1) is provided with a steam inlet (11), and the other end is provided with a steam outlet (12). The steam inlet (11) is communicated with the left chamber (13), and the steam outlet (12) is communicated with the right chamber. The number of the liquid baffle plates (2) is at least two, and all the liquid baffle plates (2) are arranged in parallel along the direction from the steam inlet (11) to the steam outlet (12), and a buffer chamber is formed between two adjacent liquid baffle plates (2). Each buffer chamber is communicated with the liquid outlet chamber (16) through a liquid outlet hole (71).

12. The vapor-liquid separator according to claim 10, characterized in that: A liquid outlet slot is arranged on the pipe body (1), and the liquid outlet chamber (16) is communicated with the outside of the pipe body (1) through the liquid outlet slot.

13. The vapor-liquid separator according to claim 12, wherein: The steam-liquid separator further includes a liquid outlet structure (8). The liquid outlet structure (8) is connected to the liquid outlet slot. An upper space and a lower space located below the upper space are formed in the liquid outlet structure (8). An oil outlet (81) and a liquid outlet (82) are arranged on the liquid outlet structure (8). The oil outlet (81) is communicated with the lower space, and the liquid outlet (82) is communicated with the upper space.

14. The vapor-liquid separator according to claim 13, characterized in that: The liquid outlet structure (8) includes a liquid outlet housing (83) and a liquid outlet pipe (84). The upper space and the lower space are formed inside the liquid outlet housing (83). The liquid outlet pipe (84) is arranged in the liquid outlet housing (83), and one end of the liquid outlet pipe (84) is communicated with the upper space, and the other end of the liquid outlet pipe (84) forms the liquid outlet (82) at the bottom of the liquid outlet housing (83).

15. The vapor-liquid separator according to claim 11, wherein: Along the direction from the steam inlet (11) to the steam outlet (12), the number of the flow holes (21) on the liquid baffle plate (2) gradually decreases.

16. The vapor-liquid separator according to claim 1, wherein: The steam-liquid separator further includes a liquid guiding wire (9). The liquid guiding wire (9) is arranged on the side wall of the liquid baffle plate (2) facing the left chamber (13).

17. The vapor-liquid separator according to any one of claims 1 to 16, characterized in that: When the steam-liquid separator is in use, the central axis of the pipe body (1) is parallel to the horizontal plane.

18. The vapor-liquid separator according to claim 1, wherein: One end of the pipe body (1) is provided with a steam inlet (11), and the other end is provided with a steam outlet (12). The steam inlet (11) is communicated with the left chamber (13), and the steam outlet (12) is communicated with the right chamber. The number of the liquid baffle plates (2) is at least two, and all the liquid baffle plates (2) are arranged in parallel along the direction from the steam inlet (11) to the steam outlet (12). The fluid in the pipe body (1) flows through all the liquid baffle plates (2) in sequence.

19. An air conditioning system, characterized in that: Including the steam-liquid separator according to any one of claims 1 to 18.

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