Liquid separator, design method of liquid separator and air conditioner

Abstract

The invention relates to the technical field of air conditioners, in particular to a liquid separator, a design method of the liquid separator and an air conditioner, the liquid separator comprises an outer shell, a main pipe body, a branch pipe body and a flow guide part, the flow guide part is arranged in the outer shell, an S-shaped flow guide channel suitable for refrigerant circulation is defined by the flow guide part and the outer shell, and the main pipe body and the branch pipe body are both arranged on the outer shell; the main pipe body and the branch pipe bodies are both communicated with the flow guide channel, the flow guide piece is provided with flow dividing holes, and the branch pipe bodies and the flow dividing holes are correspondingly arranged so that refrigerants flowing through the flow dividing holes can flow into the branch pipe bodies. A Venturi type liquid separator in the prior art is replaced, the structure of the liquid separator is changed fundamentally, the problems generated by the existing Venturi type liquid separator can be solved, a capillary liquid separating pipe does not need to be arranged, and the length of a capillary tube does not need to be adjusted. And compared with a traditional sleeve type integrated liquid separator, an inner pipe body does not need to be arranged, it is avoided that high-speed refrigerants of the spray holes of the inner pipe body impact the inner wall of the outer pipe body, and noise can be reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioners, and particularly relates to a liquid distributor, a design method of the liquid distributor, and an air conditioner. Background Art

[0002] A liquid distributor is a component in an air-conditioning system for distributing a two-phase refrigerant of gas and liquid to each branch of a heat exchanger. The liquid distribution uniformity of the liquid distributor has a great influence on the heat exchange performance of the heat exchanger. If the liquid distribution is uneven, the refrigerant in the branch with a large flow rate will not evaporate sufficiently, thereby reducing the heat exchange performance. In the branch with a small flow rate, the refrigerant will evaporate prematurely, thereby wasting pipeline materials. In addition, uneven gas-liquid mixing, especially slug flow and plug flow, will cause the liquid distributor to generate a large amount of noise.

[0003] Currently, the Venturi-type liquid distributor is a relatively widely used liquid distributor. However, the Venturi-type liquid distributor requires a large number of liquid distribution capillary tubes, which are costly and large in volume. In addition, in order to achieve a better liquid distribution effect, it is necessary to adjust the lengths of the capillary tubes. The adjustment process is relatively complicated and the product consistency cannot be guaranteed. In addition, when the system switches between cooling and heating and the heat exchanger acts as a condenser, the Venturi capillary tubes will greatly increase the refrigerant circulation resistance.

[0004] Compared with the Venturi-type liquid distributor, the traditional sleeve-type integrated liquid distributor has simple flow regulation, small volume and low cost. However, due to the high-speed refrigerant impact on the inner wall surface of the outer tube body at the spray holes of the inner tube body and the vortices generated inside the liquid distributor, it is easy to generate a large amount of noise. Summary of the Invention

[0005] The present invention provides a liquid distributor and an air conditioner to solve one of the defects in the prior art. Compared with the traditional sleeve-type integrated liquid distributor, the present invention does not need to be provided with an inner tube body, avoiding the high-speed refrigerant impact on the inner wall of the outer tube body by the spray holes of multiple inner tube bodies, and can reduce noise.

[0006] The present invention provides a liquid distributor, including an outer shell body, a main pipe body, a branch pipe body, and a flow guiding member. The flow guiding member is disposed inside the outer shell body. The flow guiding member and the outer shell body enclose an S-shaped flow guiding channel suitable for refrigerant flow. The main pipe body and the branch pipe body are both disposed on the outer shell body, and both the main pipe body and the branch pipe body are communicated with the flow guiding channel. The flow guiding member is provided with a flow dividing hole, and the branch pipe body is correspondingly disposed with the flow dividing hole so that the refrigerant flowing through the flow dividing hole flows into the branch pipe body.

[0007] According to a liquid distributor provided by the present invention, the flow direction of the refrigerant at the flow dividing hole is the same as the flow direction of the refrigerant at the pipe orifice where the branch pipe body is connected to the flow guiding channel.

[0008] A liquid distributor provided according to the present invention, inside the outer housing, along the extension direction of the diversion channel, is successively divided into at least three liquid distribution chambers by the diversion member. The main pipe body communicates with one of the liquid distribution chambers, the branch pipe bodies communicate with the remaining liquid distribution chambers in a one-to-one correspondence, and adjacent two liquid distribution chambers communicate with each other through the diversion holes.

[0009] A liquid distributor provided according to the present invention, the diversion member includes a first partition plate and a second partition plate. A plurality of the first partition plates are arranged successively along the extension direction of the diversion channel. The first partition plate includes a first plate body and a second plate body connected at a set included angle. The second plate body is provided with the diversion holes. There is one second partition plate between adjacent two second plate bodies. The extension direction of the first plate body is opposite to that of the second partition plate.

[0010] A liquid distributor provided according to the present invention, the second partition plate is connected to the second plate body with a larger refrigerant flow rate in the diversion holes among the two second plate bodies adjacent to it.

[0011] A liquid distributor provided according to the present invention, the diversion member further includes a first connection part and a second connection part. Adjacent two second plate bodies are connected through the first connection part, and the second plate body can be connected to the outer housing through the second connection part.

[0012] A liquid distributor provided according to the present invention, each of the second plate bodies is located in the same plane, and the main pipe body and the branch pipe bodies are respectively located on both sides of the plane formed by the second plate bodies.

[0013] A liquid distributor provided according to the present invention, the incident angle of the refrigerant on the inner wall of the outer housing is an acute angle.

[0014] The present invention also provides a design method for a liquid distributor, which is applied to the liquid distributor as described above, and includes: Based on the set functional relationship and the measured refrigerant flow rates of the branch pipe bodies, obtain the coefficient of the area of the diversion holes in the set functional relationship. The set functional relationship is the functional relationship between the refrigerant flow rate of the branch pipe body and the area of the diversion hole corresponding to the branch pipe body; Based on the coefficient of the area of the diversion holes in the set functional relationship and the designed refrigerant flow rates of the branch pipe bodies, obtain the designed areas of the diversion holes corresponding to the branch pipe bodies.

[0015] The present invention also provides an air conditioner, including the liquid distributor as described above.

[0016] The liquid distributor provided by the present invention has a diversion member disposed inside the outer housing. The diversion member defines a diversion channel inside the outer housing, so that when the refrigerant flows through the diversion channel, an S-shaped flow path can be formed. A plurality of openings on the outer housing are used to insert the main pipe body and the branch pipe body, so that the main pipe body and the branch pipe body are connected to the outer housing and are both in communication with the inside of the outer housing. During the process of the refrigerant flowing along the S-shaped diversion channel, it will successively pass through the diversion holes, and the diversion holes can form a porous channel, which is part of the diversion channel. When the refrigerant flows through the diversion holes, bubbly flow is generated, which can reduce the noise of the liquid distributor during system operation. The refrigerant flows in the S-shaped diversion channel inside the outer housing. As the diversion channel bends, the refrigerant can also be continuously reflected and bent between the inner walls of the outer housing, so that the gaseous refrigerant and the liquid refrigerant are evenly dispersed. The resulting turbulent flow effect makes the refrigerant in the gas-liquid two-phase mix evenly.

[0017] When the heat exchanger is used as a condenser, if the condensation is insufficient, the gas-liquid two-phase refrigerant enters the inside of the outer housing from the branch pipe body. When passing through the diversion holes on the diversion member, the gas-liquid two-phase is evenly mixed. This can avoid the excessive impact on the expansion valve caused by the unevenly mixed gas-liquid two-phase refrigerant, and at the same time can reduce the noise of the expansion valve. If the condensation is sufficient, the diversion member has little influence on the refrigerant flow.

[0018] When the heat exchanger is used as an evaporator, the gas-liquid two-phase refrigerant enters the outer housing from the main pipe body, mixes by hitting the inner wall of the outer housing in the diversion channel, and the flow can be changed into bubbly flow through the diversion holes, which is beneficial to the uniform mixing of the gas-liquid two-phase and noise reduction, and then enters the branch pipe body and is distributed to different flow paths of the heat exchanger for heat exchange.

[0019] The liquid distributor of the present invention, through the structural cooperation of the main pipe body, the outer housing, the diversion member and the branch pipe body, replaces the existing Venturi-type liquid distributor, fundamentally changes the type of the liquid distributor structure, can solve the problems generated by the existing Venturi-type liquid distributor, does not need to set up capillary liquid distribution pipes, and does not need to adjust the length of the capillary tubes. Moreover, compared with the traditional sleeve-type integrated liquid distributor, the present invention does not need to set up an inner pipe body, avoiding the high-speed refrigerant impact on the inner wall of the outer pipe body by the spray holes of multiple inner pipe bodies, and can reduce the noise. The liquid distributor of the present invention has a simple structure, is easy to install and debug, has a low cost, good liquid distribution effect, is easy to control the size during the production process, and can be flexibly adjusted according to the actual situation of the heat exchanger. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 It is a schematic structural view of the main body of the liquid distributor provided by the embodiment of the present invention disposed on the upper part of the outer casing; Figure 2 It is a schematic structural view of the flow guiding member when the main body of the liquid distributor provided by the embodiment of the present invention is disposed on the upper part of the outer casing; Figure 3 It is a schematic structural view of the refrigerant of the liquid distributor provided by the embodiment of the present invention entering the flow guiding channel from the main body; Figure 4 It is Figure 3 A cross-sectional view taken along the A-A direction of Figure 5 It is a schematic structural view of the refrigerant of the liquid distributor provided by the embodiment of the present invention entering the flow guiding channel from the branch body; Figure 6 It is Figure 5 A cross-sectional view taken along the B-B direction of Figure 7 It is a schematic structural view of the main body of the liquid distributor provided by the embodiment of the present invention disposed in the middle part of the outer casing; Figure 8 It is a schematic structural view of the flow guiding member when the main body of the liquid distributor provided by the embodiment of the present invention is disposed in the middle part of the outer casing; Figure 9 It is a schematic structural view of the main body of the liquid distributor provided by the embodiment of the present invention disposed in the lower part of the outer casing; Figure 10 It is a schematic structural view of the flow guiding member when the main body of the liquid distributor provided by the embodiment of the present invention is disposed in the lower part of the outer casing; Figure 11 It is a schematic structural view of the first manufacturing process of the flow guiding member of the liquid distributor provided by the embodiment of the present invention; Figure 12 It is a schematic structural view of the second manufacturing process of the flow guiding member of the liquid distributor provided by the embodiment of the present invention; Figure 13 It is a schematic structural view of the third manufacturing process of the flow guiding member of the liquid distributor provided by the embodiment of the present invention; Figure 14 It is a schematic structural view of the liquid distributor provided by the embodiment of the present invention.

[0022] Reference numerals: 100, outer casing; 110, flow guiding channel; 200, main body; 300, liquid separation chamber; 310, main liquid separation chamber; 320, first liquid separation chamber; 330, second liquid separation chamber; 340, third liquid separation chamber; 400, branch pipe body; 410, first branch pipe body; 420, second branch pipe body; 430, third branch pipe body; 500, Flow guide member; 510, Diverging holes; 511, First diverging hole; 512, Second diverging hole; 513, Third diverging hole; 520, First partition; 521, First plate body; 522, Second plate body; 530, Second partition; 540, First connecting portion; 550, Second connecting portion; 5211, First part of the first plate body; 5212, Second part of the first plate body; 5213, Third part of the first plate body; 5221, First part of the second plate body; 5222, Second part of the second plate body; 5223, Third part of the second plate body; 531, First part of the second partition; 532, Second part of the second partition. Detailed implementation manners

[0023] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below with reference to the accompanying drawings in the present invention. Apparently, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present invention without making creative efforts shall fall within the protection scope of the present invention.

[0024] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown in , , , , , and , the liquid distributor provided by the embodiment of the present invention includes a housing 100, a main pipe body 200, a branch pipe body 400 and a flow guide member 500. The flow guide member 500 is disposed inside the housing 100. The flow guide member 500 and the housing 100 define an S-shaped flow guide channel 110 suitable for refrigerant flow. The main pipe body 200 and the branch pipe body 400 are both disposed in the housing 100, and both the main pipe body 200 and the branch pipe body 400 communicate with the flow guide channel 110. The flow guide member 500 is provided with diverging holes 510, and the branch pipe body 400 is correspondingly disposed with the diverging holes 510 so that the refrigerant flowing through the diverging holes 510 flows into the branch pipe body 400.

[0025] In the liquid distributor according to the embodiment of the present invention, a flow guiding member 500 is arranged inside the outer housing 100. The flow guiding member 500 defines a flow guiding channel 110 inside the outer housing 100, so that when the refrigerant flows in the flow guiding channel 110, an S-shaped flow path can be formed. A plurality of openings are provided on the outer housing 100 for inserting the main pipe body 200 and the branch pipe body 400, so that the main pipe body 200 and the branch pipe body 400 are connected to the outer housing 100 and are both in communication with the inside of the outer housing 100. During the process of the refrigerant flowing along the S-shaped flow guiding channel 110, it will sequentially pass through the shunt holes 510. The shunt holes 510 can form a porous channel, which is a part of the flow guiding channel 110. When the refrigerant flows through the shunt holes 510, bubbly flow is generated, which can reduce the noise of the liquid distributor during system operation. The refrigerant flows in the S-shaped flow guiding channel 110 inside the outer housing 100. As the flow guiding channel 110 bends, the refrigerant can also be continuously reflected and bent between the inner walls of the outer housing 100, so that the gaseous refrigerant and the liquid refrigerant are evenly dispersed. The resulting turbulent flow effect makes the refrigerant in the gas-liquid two-phase mix evenly.

[0026] When the heat exchanger is used as a condenser, if the condensation is insufficient, the gas-liquid two-phase refrigerant enters the inside of the outer housing 100 from the branch pipe body 400. When passing through the shunt holes 510 on the flow guiding member 500, the gas-liquid two-phase is evenly mixed. This can avoid the excessive impact on the expansion valve caused by the unevenly mixed gas-liquid two-phase refrigerant, and at the same time can reduce the noise of the expansion valve. If the condensation is sufficient, the flow guiding member 500 has little influence on the refrigerant flow.

[0027] When the heat exchanger is used as an evaporator, the gas-liquid two-phase refrigerant enters the outer housing 100 from the main pipe body 200, mixes by hitting the inner wall of the outer housing 100 in the flow guiding channel 110, and the flow can be changed into bubbly flow through the shunt holes 510, which is beneficial to the uniform mixing of the gas-liquid two-phase and the reduction of noise, and then enters the branch pipe body 400 and is distributed to different flow paths of the heat exchanger for heat exchange.

[0028] The liquid distributor of the present invention, through the structural cooperation of the main pipe body 200, the outer housing 100, the flow guiding member 500 and the branch pipe body 400, replaces the existing Venturi-type liquid distributor, fundamentally changes the type of the liquid distributor structure, can solve the problems generated by the existing Venturi-type liquid distributor, does not need to set up capillary liquid distribution pipes, and even less need to debug the capillary length. Moreover, compared with the traditional sleeve-type integrated liquid distributor, the present invention does not need to set up an inner pipe body, avoiding the high-speed refrigerant impact on the inner wall of the outer pipe body by the spray holes of multiple inner pipe bodies, and can reduce the noise. The liquid distributor of the present invention has a simple structure, is easy to install and debug, has a low cost, good liquid distribution effect, good size control during the production and manufacturing process, and can be flexibly adjusted according to the actual situation of the heat exchanger.

[0029] According to an embodiment provided by the present invention, the refrigerant flow direction at the diversion hole 510 is the same as the refrigerant flow direction at the pipe orifice where the branch pipe body 400 is connected to the diversion channel 110. In this embodiment, the diversion channel 110 extends along the axial direction of the outer casing 100, the branch pipe bodies 400 are arranged in one-to-one correspondence with the diversion holes 510, and the pipe orifices where the branch pipe bodies 400 communicate with the diversion channel 110 are directly opposite the diversion holes 510. When the refrigerant flows in the diversion channel 110, after forming a bubbly flow through the diversion holes 510, it flows into the branch pipe bodies 400 along the shortest and most direct path, thereby achieving the best noise reduction and dispersion effects.

[0030] According to an embodiment provided by the present invention, inside the outer casing 100, along the extension direction of the diversion channel 110, at least three liquid separation chambers 300 are sequentially separated by the diversion member 500. The main pipe body 200 communicates with one of the liquid separation chambers 300, the branch pipe bodies 400 communicate with the remaining liquid separation chambers 300 in one-to-one correspondence, and adjacent two liquid separation chambers 300 communicate with each other through the diversion holes 510.

[0031] In this embodiment, inside the outer casing 100, along its axial direction, it is sequentially divided into at least three liquid separation chambers 300 by the diversion member 500. The adjacent liquid separation chambers 300 are sequentially communicated with each other, and together with the diversion holes 510 of the diversion member 500, an overall diversion channel 110 is formed. There is one main pipe body 200, which communicates with one of the liquid separation chambers 300, and each of the remaining liquid separation chambers 300 communicates with a branch pipe body 400.

[0032] In this embodiment, the liquid separation chamber 300 communicated with the main pipe body 200 is defined as the main liquid separation chamber 310, the branch pipe bodies 400 are sequentially defined as the first branch pipe body 410, the second branch pipe body 420, the third branch pipe body 430, etc. along the extension direction of the diversion channel 110. Correspondingly, the liquid separation chambers 300 communicated with the respective branch pipe bodies 400 are sequentially defined as the first liquid separation chamber 320, the second liquid separation chamber 330, the third liquid separation chamber 340, etc. along the refrigerant flow direction, and the diversion holes 510 are sequentially defined as the first diversion hole 511, the second diversion hole 512, the third diversion hole 513, etc. along the extension direction of the diversion channel 110.

[0033] When the heat exchanger is used as an evaporator, the refrigerant enters the main liquid distribution cavity 310 from the main pipe body 200, collides with the inner wall of the outer shell 100 in the main liquid distribution cavity 310 and is reflected for mixing, then enters the first liquid distribution cavity 320 through the first shunt hole 511 of the flow guide member 500. For the refrigerant evenly mixed in the first liquid distribution cavity 320, a part flows out of the liquid distributor through the first branch pipe body 410, and the other part collides with the inner wall of the outer shell 100 in the first liquid distribution cavity 320 and is reflected for mixing, and then enters the second liquid distribution cavity 330 through the second shunt hole 512 of the flow guide member 500. For the refrigerant evenly mixed in the second liquid distribution cavity 330, a part flows out of the liquid distributor through the second branch pipe body 420, and the other part collides with the inner wall of the outer shell 100 in the second liquid distribution cavity 330 and is reflected for mixing, and then enters the third liquid distribution cavity 340 through the third shunt hole 513 of the flow guide member 500. The refrigerant evenly mixed in the third liquid distribution cavity 340 flows out of the liquid distributor through the third branch pipe body 430.

[0034] When the heat exchanger is used as a condenser, the refrigerant simultaneously enters the first liquid distribution cavity 320, the second liquid distribution cavity 330 and the third liquid distribution cavity 340 from the first branch pipe body 410, the second branch pipe body 420 and the third branch pipe body 430. As the refrigerant flows along the flow guide channel 110, the refrigerant in the third liquid distribution cavity 340 gradually converges to the second liquid distribution cavity 330, the refrigerant in the second liquid distribution cavity 330 gradually converges to the first liquid distribution cavity 320, and the refrigerant in the first liquid distribution cavity 320 gradually converges to the main liquid distribution cavity 310, and then flows out of the liquid distributor from the main pipe body 200.

[0035] Thus, when the heat exchanger is used as an evaporator, the design of the flow guide member 500 of the liquid distributor can achieve a sequential shunt effect, and can shunt to each branch pipe body 400 through each shunt hole 510 and each liquid distribution cavity 300 in sequence, that is, the refrigerant in the main liquid distribution cavity 310 is divided into the refrigerant in the first branch pipe body 410 and the refrigerant in the first liquid distribution cavity 320, the refrigerant in the first liquid distribution cavity 320 is divided into the refrigerant in the second branch pipe body 420 and the refrigerant in the second liquid distribution cavity 330, the refrigerant in the second liquid distribution cavity 330 is divided into the refrigerant in the third branch pipe body 430 and the refrigerant in the third liquid distribution cavity 340, and so on, making the adjustment of the refrigerant flow rate of each branch pipe body 400 simpler.

[0036] Such as Figure 7 、 Figure 8 、 Figure 9 and Figure 10As shown, in some embodiments, the main body 200 can communicate with the liquid distribution cavity 300 located at the end of the outer casing 100. That is, the main liquid distribution cavity 310 can be the top liquid distribution cavity 300 or the bottom liquid distribution cavity 300. The position of the main body 200 is variable and can also communicate with the liquid distribution cavity 300 in the middle of the outer casing 100. That is, the main liquid distribution cavity 310 is the middle liquid distribution cavity 300. That is, the refrigerant can enter the liquid distributor from positions such as the top, middle, and bottom. At the same time, each of the remaining liquid distribution cavities 300 in the liquid distribution cavities 300 can also correspond to a plurality of branch bodies 400, and the number of the branch bodies 400 is uncertain.

[0037] It can be understood that the cross-sectional shape of the outer casing 100 can be circular, regular polygon or other shapes, and the size is variable. The flow guiding member 500 can be rectangular, circular or other shapes, and the size is variable. The shape of the flow dividing holes 510 on the flow guiding member 500 can be regular polygon, irregular figure or other shapes, the aperture is also variable, and the position is variable. The flow guiding channel 110 formed by the flow guiding member 500 can be rectangular, irregular figure or other shapes, the channel area is variable, and the position is variable.

[0038] According to an embodiment provided by the present invention, the flow guiding member 500 includes a first partition 520 and a second partition 530. A plurality of the first partitions 520 are sequentially arranged along the extending direction of the flow guiding channel 110. The first partition 520 includes a first plate body 521 and a second plate body 522 connected at a set angle. The second plate body 522 is provided with the flow dividing holes 510. A second partition 530 is provided between two adjacent second plate bodies 522. The extending direction of the first plate body 521 is opposite to that of the second partition 530.

[0039] In this embodiment, the flow guiding member 500 is arranged inside the outer casing 100 in a split form along the axial direction of the outer casing 100. The first partition 520 and the second partition 530 form the flow guiding member 500. The first partition 520 is a bent plate, bent at a set angle to form the first plate body 521 and the second plate body 522. The flow dividing holes 510 are arranged on the second plate body 522. The first partitions 520 are arranged in sequence along the refrigerant flow direction. A second partition 530 is arranged between two adjacent second plate bodies 522. The second partition 530 is used to ensure sufficient separation between two adjacent liquid distribution cavities 300, the space of each liquid distribution cavity 300 is complete, each liquid distribution cavity 300 is correspondingly provided with a branch body 400, and the branch body 400 is opposite to the second plate body 522.

[0040] In this embodiment, the first first partition 520 and the first second partition 530 cooperate to form a first group of partitions, separating the main liquid separation chamber 310 from the first liquid separation chamber 320. The second first partition 520 and the second second partition 530 cooperate to form a second group of partitions, separating the first liquid separation chamber 320 from the second liquid separation chamber 330. The third first partition 520 separates the second liquid separation chamber 330 from the third liquid separation chamber 340.

[0041] The first plate body 521 and the second plate body 522 of the first partition 520 form a right-angle angle. In each group of partitions, the height position of the second partition 530 in the outer housing 100 is lower than the height position of the first plate body 521 in the outer housing 100, and the extending directions of the first plate body 521 and the second partition 530 are opposite. Thus, each group of partitions is composed of the vertically arranged second plate body 522, the first plate body 521 horizontally extending from the upper end of the second plate body 522 toward the side where the branch pipe body 400 is located, and the second partition 530 horizontally extending from the lower end of the second plate body 522 toward the side where the main pipe body 200 is located. Each group of partitions is S-shaped, so that the liquid separation chambers 300 formed by the cooperation between adjacent two groups of partitions are S-shaped.

[0042] The position formed by the cooperation between the first plate body 521 and the outer housing 100 is a refrigerant channel. The refrigerant channel and the diversion channel formed by the diversion holes 510 are both part of the diversion channel 110. The diversion channel 110 is composed of multiple refrigerant channels and multiple diversion channels.

[0043] As Figure 14 shown, after the refrigerant flows into the main liquid separation chamber 310 from the main pipe body 200, it first impacts the inner wall of the outer housing 100 above the first plate body 5211, then reflects into the space above the first second partition 531, and then enters the first liquid separation chamber 320 through the diversion holes 510 of the second plate body 5221. A part of the refrigerant enters the space between the first plate body 5211 and the second plate body 5212 and flows out of the liquid separator through the first branch pipe body 410. Another part of the refrigerant directly enters the space between the first second partition 531 and the second second partition 532, and enters the second liquid separation chamber 330 through the diversion holes 510 of the second plate body 5222. A part of the refrigerant enters the space between the second plate body 5212 and the third plate body 5213 and flows out of the liquid separator through the second branch pipe body 420. Another part of the refrigerant directly enters the space below the second second partition 532, and enters the third liquid separation chamber 340 through the diversion holes 510 of the third plate body 5223. And so on, forming an S-shaped refrigerant flow path. In this embodiment, all the refrigerant in the third liquid separation chamber 340 flows out of the liquid separator through the third branch pipe body 430.

[0044] According to an embodiment provided by the present invention, the second partition 530 is connected to the second plate body 522 with a larger refrigerant flow rate in the two second plate bodies 522 adjacent to it. In this embodiment, in the flow guiding member 500 forming the S-shaped liquid separation cavity 300, the upper end of the second plate body 522 is connected to the first plate body 521, and the lower end of the second plate body 522 is connected to the second partition 530, that is, the first partition 520 and the second partition 530 form the S-shaped flow guiding member 500. Multiple S-shaped flow guiding members 500 can be sequentially arranged inside the outer casing 100 to divide the flow guiding channel 110 into multiple connected S-shaped liquid separation cavities 300. Since the liquid distributor can perform sequential flow splitting, the refrigerant flow rate passing through each flow splitting hole 510 will gradually increase or gradually decrease. The second partition 530 arranged between two adjacent flow splitting holes 510 is connected to the second plate body 522 where the flow splitting hole 510 with a larger refrigerant flow rate is located.

[0045] In other embodiments, the second partition 530 and the first partition 520 can also adopt other structural cooperation forms, which can effectively separate the liquid separation cavity 300 while ensuring that the refrigerant can flow along the S-shaped path inside the flow guiding channel 110.

[0046] As Figure 13 shown, according to an embodiment provided by the present invention, the flow guiding member 500 further includes a first connection portion 540 and a second connection portion 550. Two adjacent second plate bodies 522 are connected through the first connection portion 540, and the second plate body 522 can be connected to the outer casing 100 through the second connection portion 550.

[0047] In this embodiment, the flow guiding member 500 can be in an integral form, that is, each first partition 520 and the second partition 530 are sequentially connected through the first connection portion 540 and the second connection portion 550. Since the second partition 530 is connected to the second plate body 522 where the flow splitting hole 510 with a larger refrigerant flow rate is located in the adjacent second plate body 522, connecting the edges of the second plate bodies 522 in sequence through the first connection portion 540 can connect each second partition 530 into a whole. The second plate body 522 and the first plate body 521 form the first partition 520, so connecting the edges of the second plate bodies 522 in sequence through the first connection portion 540 can also connect each first partition 520 into a whole, thereby forming the overall structure of the flow guiding member 500. The first connection portion 540 is also connected to the outer casing 100, thereby realizing the fixation of the flow guiding member 500 inside the outer casing 100.

[0048] In this embodiment, if the end of the flow guiding member 500 is the first plate body 521 or the second partition 530 formed by bending, the second plate body 522 connected to the first plate body 521 or the second partition 530 is connected to the outer casing 100 through the second connection portion 550, thereby strengthening the connection between the overall flow guiding member 500 and the outer casing 100.

[0049] The materials for manufacturing the liquid distributor can be copper, aluminum alloy, stainless steel, etc.

[0050] When the flow guide member 500 is used as an integral component, it can be formed by stamping a flow guide plate. The flow guide plate is a rectangular plate, and the refrigerant channels thereon are formed by stamping. The stamping process can be carried out in three steps, as Figure 11 , Figure 12 and Figure 13 shown: Process 1, stamping and cutting the material to form the shunt holes 510 of the porous channel, that is, the second plate body 522; Process 2, stamping and bending to form the bend on the left side, that is, the second partition 530; Process 3, stamping and bending to form the bend on the right side, that is, the first plate body 521. After stamping, it is assembled into the outer shell 100 to form the flow guide channel 110. If the mold is suitable, the flow guide plate can also be formed by one-step stamping.

[0051] The outer shell 100 of the liquid distributor is manufactured by extrusion or cold drawing process. Use equipment such as drill presses and CNC machines to process the insertion holes for the main pipe body 200 and the branch pipe body 400 at the corresponding positions of the outer shell 100. The outer shell 100, the main pipe body 200 and the branch pipe body 400 are welded and formed by brazing or other methods.

[0052] The bottom plate is welded to the bottom of the outer shell 100 by brazing or other methods. The flow guide member 500 is inserted into the inner part of the outer shell 100. Due to the elasticity of the bend of the flow guide member 500, even if the flow guide member 500 abuts against the outer shell 100, the flow guide member 500 can be smoothly inserted into the outer shell 100. The top two corners of the flow guide plate are welded and connected to the outer shell 100 by brazing or other methods. The top plate is welded to the top of the outer shell 100 by brazing or other methods. The manufacturing method of the liquid distributor varies according to the sizes and shapes of the outer shell 100 and the flow guide member 500.

[0053] According to an embodiment provided by the present invention, each of the second plate bodies 522 is located in the same plane, and the main pipe body 200 and the branch pipe body 400 are respectively located on both sides of the plane formed by the second plate bodies 522. In this embodiment, each of the second plate bodies 522 is in the same plane, that is, the plane where the second plate bodies 522 are located extends along the axial direction of the outer shell 100. The plane where the second plate bodies 522 are located divides the inner part of the outer shell 100 into two side spaces. One side space is provided with the first plate body 521, and the other side space is provided with the second partition 530. At the same time, the main pipe body 200 is arranged on the side where the second partition 530 is located, and the branch pipe body 400 is arranged on the side where the first plate body 521 is located. The regularly distributed structure of the flow guide member 500 is more convenient for manufacturing, and at the same time, it can make the refrigerant flow path of the S-shaped flow guide channel 110 clearer.

[0054] According to an embodiment provided by the present invention, the incident angle of the refrigerant on the inner wall of the outer housing 100 is an acute angle. In this embodiment, within each liquid distribution cavity 300, most of the incident angles of the refrigerant on the inner wall of the outer housing 100 are acute angles, thereby reducing the noise of the refrigerant impacting the inner wall of the outer housing 100.

[0055] An embodiment of the present invention also provides a design method for a liquid distributor, which is applied to the liquid distributor as described in the above embodiment, and includes: Based on the set function relationship and the measured refrigerant flow rates of each branch pipe body 400, the coefficient of the area of the flow splitting hole 510 in the set function relationship is obtained, and the set function relationship is the function relationship between the refrigerant flow rate of the branch pipe body 400 and the area of the flow splitting hole 510 corresponding to the branch pipe body 400; Based on the coefficient of the area of the flow splitting hole 510 in the set function relationship and the designed refrigerant flow rates of each branch pipe body 400, the designed areas of the flow splitting holes 510 corresponding to each branch pipe body 400 are obtained.

[0056] In this embodiment, the liquid distributor includes a first branch pipe body 410, a second branch pipe body 420, and a third branch pipe body 430. The interior of the outer housing 100 is divided into a main liquid distribution cavity 310, a first liquid distribution cavity 320, a second liquid distribution cavity 330, and a third liquid distribution cavity 340. The flow guiding member 500 is provided with a first flow splitting hole 511, a second flow splitting hole 512, and a third flow splitting hole 513. Integrated liquid distributor working mode: As Figure 3 and Figure 4 shown, "⊕" represents the direction of flow into the paper, and "⊙" represents the direction of flow out of the paper. When the heat exchanger is used as an evaporator: The gas-liquid two-phase refrigerant with a mass flow rate of m enters the main liquid distribution cavity 310 of the liquid distributor from the main pipe body 200, and the gas-liquid two-phase undergoes the first mixing in the main liquid distribution cavity 310 by impacting the inner wall of the outer housing 100.

[0057] The gas-liquid two-phase refrigerant with a mass flow rate of m then enters the first liquid distribution cavity 320 through the first flow splitting hole 511. When passing through the first flow splitting hole 511, the porous channel can make the refrigerant flow become a bubbly flow, which is beneficial to the uniform mixing of the gas-liquid two-phase and reduces noise. The uniformly mixed refrigerant in the first liquid distribution cavity 320, a part of it flows out of the liquid distributor through the first branch pipe body 410 communicated with the first liquid distribution cavity 320, and the mass flow rate is m 1; another part flows through the second flow splitting hole 512 towards the second liquid distribution cavity 330, and the mass flow rate is m A2 .

[0058] When the gas-liquid two-phase refrigerant passes through the second shunt hole 512, the porous channel can make the refrigerant flow turn into bubble flow, which is beneficial to the uniform mixing of the gas-liquid two-phase and the reduction of noise. For the refrigerant uniformly mixed in the second liquid separation cavity 330, a part of it flows out of the liquid separator through the second branch pipe body 420 communicated with the second liquid separation cavity 330, and the mass flow rate is m 2; another part flows to the third liquid separation cavity 340 through the third shunt hole 513, and the mass flow rate is m A3 , and the refrigerant in the third liquid separation cavity 340 flows out of the liquid separator through the third branch pipe body 430 communicated with the third liquid separation cavity 340, and the mass flow rate is m 3.

[0059] For a determined heat exchanger, the mass flow rates m 1, m 2, m 3 and the refrigerant dryness x all have determined design values. At this time, the refrigerant density ρ can be calculated. The flow velocity of the refrigerant inside the liquid separator is v .

[0060] As can be seen from the above:

[0061] m A And the area A of the shunt hole 510 can be expressed as relationship (4)

[0062] Therefore, the refrigerant flow rates of each branch pipe body 400 satisfy the following relationship

[0063] The area A

[0064] of the shunt hole 510 can be calculated through formulas (5) to (7). A .

[0065] It can be seen that the flow guiding member 500 has a sequential shunting effect, that is, it can shunt to each branch pipe body 400 through each shunt hole 510 and each liquid separation cavity 300 in sequence.

[0066] The air conditioner provided by the present invention will be described below. The air conditioner described below can be mutually corresponding and referred to the liquid separator described above.

[0067] An embodiment of the present invention further provides an air conditioner, which includes a liquid distributor as described in the above embodiment.

[0068] For the air conditioner according to the embodiment of the present invention, by providing the above-mentioned liquid distributor, in the air conditioner circulation system, the liquid distributor distributes the gas-liquid two-phase refrigerant into each pipeline of the evaporator for heat exchange. By using the liquid distributor according to the embodiment of the present invention, it is possible to ensure uniform liquid distribution, ensure that the refrigerant in the branch with a large flow rate is completely evaporated, and the refrigerant in the branch with a small flow rate will not be evaporated prematurely, thus avoiding the problem of waste of heat exchange area. Therefore, the uniform liquid distribution of the liquid distributor according to the embodiment of the present invention can directly affect the heat exchange capacity of the evaporator, improve the performance of the air conditioner, and avoid the problem of the reduction of the heat exchanger capacity caused by uneven liquid distribution of the liquid distributor.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. And these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A liquid dispenser, characterized in that, It includes a housing (100), a main pipe body (200), a branch pipe body (400) and a flow guide member (500). The flow guide member (500) is disposed inside the housing (100). The flow guide member (500) and the housing (100) enclose an S-shaped flow guide channel (110) suitable for refrigerant flow. The main pipe body (200) and the branch pipe body (400) are both disposed in the housing (100), and both the main pipe body (200) and the branch pipe body (400) communicate with the flow guide channel (110). The flow guide member (500) is provided with a flow splitting hole (510), and the branch pipe body (400) is correspondingly disposed with the flow splitting hole (510) so that the refrigerant flowing through the flow splitting hole (510) flows into the branch pipe body (400).

2. The dispenser according to claim 1, wherein, The flow direction of the refrigerant at the flow splitting hole (510) is the same as the flow direction of the refrigerant at the pipe orifice where the branch pipe body (400) is connected to the flow guide channel (110).

3. The dispenser according to claim 1, characterized in that, Inside the housing (100), along the extension direction of the flow guide channel (110), it is sequentially divided into at least three liquid separation chambers (300) by the flow guide member (500). The main pipe body (200) communicates with one of the liquid separation chambers (300), and the branch pipe body (400) communicates with the remaining liquid separation chambers (300) in one-to-one correspondence. Adjacent two liquid separation chambers (300) communicate with each other through the flow splitting hole (510).

4. The dispenser according to claim 3, characterized in that, The flow guide member (500) includes a first partition plate (520) and a second partition plate (530). A plurality of the first partition plates (520) are sequentially arranged along the extension direction of the flow guide channel (110). The first partition plate (520) includes a first plate body (521) and a second plate body (522) connected at a set angle. The second plate body (522) is provided with the flow splitting hole (510). There is one second partition plate (530) between adjacent two second plate bodies (522). The extension direction of the first plate body (521) is opposite to that of the second partition plate (530).

5. The dispenser according to claim 4, characterized in that, The second partition plate (530) is connected to the second plate body (522) with a larger refrigerant flow rate at the flow splitting hole (510) among the two adjacent second plate bodies (522) to which it is adjacent.

6. The dispenser according to claim 4, wherein The flow guide member (500) further includes a first connection portion (540) and a second connection portion (550). Adjacent two second plate bodies (522) are connected by the first connection portion (540), and the second plate body (522) can be connected to the housing (100) through the second connection portion (550).

7. The dispenser according to claim 3, wherein Each of the second plate bodies (522) is located in the same plane, and the main pipe body (200) and the branch pipe body (400) are respectively located on both sides of the plane formed by the second plate bodies (522).

8. The dispenser according to any one of claims 1 to 7, characterized in that, The incident angle of the refrigerant on the inner wall of the housing (100) is an acute angle.

9. A design method for a liquid distributor, characterized in that, Applied to the flow splitter according to any one of claims 1 to 8, it includes: Based on the set function relationship and the measured refrigerant flow rates of each branch pipe body (400), obtain the coefficient of the area of the flow splitting holes (510) in the set function relationship, where the set function relationship is the functional relationship between the refrigerant flow rate of the branch pipe body (400) and the area of the flow splitting holes (510) corresponding to the branch pipe body (400); Based on the coefficient of the area of the flow splitting holes (510) in the set function relationship and the designed refrigerant flow rates of each branch pipe body (400), obtain the designed areas of the flow splitting holes (510) corresponding to each branch pipe body (400).

10. An air conditioner, characterized in that, It includes the flow divider according to any one of claims 1 to 8.

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