Liquid separator and air conditioner

Abstract

The invention relates to the technical field of air conditioners, in particular to a liquid separator and an air conditioner, the liquid separator comprises an outer pipe body and an inner pipe body, the outer pipe body sleeves the outer side of the inner pipe body, the outer pipe body and the inner pipe body are connected to define a liquid separation cavity, the inner pipe body is provided with a one-way flow channel and a spray hole which are communicated with the liquid separation cavity, and the one-way flow channel is located below the spray hole; the outer pipe body is provided with a plurality of branch pipe bodies communicated with the liquid separation cavity, and the branch pipe bodies are communicated with the liquid separation cavity. And the one-way flow channel only enables the refrigerant to flow into the pipe cavity of the inner pipe body from the liquid separation cavity. In addition, the one-way flow channel can also play a role in smoothly returning oil, the compressor oil can be discharged in time through the one-way flow channel, accumulation of the compressor oil is avoided, and if the one-way flow channel does not exist, the compressor oil is accumulated in the liquid separation cavity between the inner pipe body and the outer pipe body and cannot be discharged.

Description

Technical Field

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

[0002] In an air-conditioning circulation system, a liquid distributor distributes a gas-liquid two-phase refrigerant into each pipeline of an evaporator for heat exchange. If the liquid distribution of the liquid distributor is uneven, the refrigerant in the branch with a large flow rate will not be completely evaporated, while the refrigerant in the branch with a small flow rate will be evaporated prematurely, resulting in a waste of the heat exchange area. Therefore, the liquid distribution uniformity of the liquid distributor will directly affect the heat exchange capacity of the evaporator, and further affect the performance of the air conditioner. The reduction in the heat exchanger capacity caused by uneven liquid distribution of the liquid distributor can reach 25%.

[0003] Currently, a Venturi-type liquid distributor is a 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. Moreover, in order to achieve a better liquid distribution effect, the lengths of the capillary tubes need to be adjusted, and the adjustment process is relatively complicated and the product consistency cannot be guaranteed. Summary of the Invention

[0004] The present invention provides a liquid distributor and an air conditioner to solve one of the defects in the prior art. The one-way flow channel can only allow the refrigerant to flow from the liquid distribution cavity into the lumen of the inner tube body. In addition, the one-way flow channel can also play a role in smoothly returning oil. The compressor oil can be discharged in time through the one-way flow channel to avoid the accumulation of compressor oil. Without this hole, the compressor oil will accumulate in the liquid distribution cavity between the inner tube body and the outer tube body and cannot be discharged.

[0005] The present invention provides a liquid distributor, including an outer tube body and an inner tube body. The outer tube body is sleeved outside the inner tube body and is connected to the inner tube body to enclose a liquid distribution cavity. The inner tube body is provided with a one-way flow channel and a spray hole communicating with the liquid distribution cavity. The one-way flow channel is located below the spray hole, so that the refrigerant flows from the liquid distribution cavity into the lumen of the inner tube body. The outer tube body is provided with a plurality of branch tube bodies communicating with the liquid distribution cavity.

[0006] According to a liquid distributor provided by the present invention, the one-way flow channel is located at the bottom of the liquid distribution cavity. Since the one-way flow channel is located at the bottom of the liquid distribution cavity, almost no refrigerant will accumulate inside the liquid distribution cavity, minimizing the retention amount of the refrigerant in the liquid distributor to the greatest extent.

[0007] According to a liquid distributor provided by the present invention, a protrusion is provided on the outer wall of the inner tube body, and the one-way flow channel is arranged inside the protrusion. The one-way flow channel is arranged inside the protrusion. The arrangement of the protrusion makes the bottom space of the liquid distribution cavity be the outer wall of the protrusion and the inner wall of the outer tube body, reducing the bottom space of the liquid distribution cavity and further reducing the retention amount of the refrigerant in the liquid distributor.

[0008] A liquid distributor provided according to the present invention, wherein the cross-sectional area of the one-way flow channel is greater than or equal to the cross-sectional area of the spray hole. The relatively large cross-sectional area of the one-way flow channel enables smooth inflow, effectively reducing the flow resistance of the refrigerant, and thus minimizing the resistance during refrigeration and heating reversal.

[0009] A liquid distributor provided according to the present invention, wherein the one-way flow channel includes a main flow channel and at least one resistance flow channel. Both ends of the resistance flow channel are communicated with the main flow channel, and the main flow channel gradually inclines from bottom to top along the axial direction of the inner tube body towards the outer tube body. The main flow channel and the resistance flow channel cooperate to form a flow channel with a Tesla valve structure, thereby achieving the effect of controlling the one-way flow of the refrigerant at the one-way flow channel.

[0010] A liquid distributor provided according to the present invention, wherein a plurality of the one-way flow channels are evenly distributed around the axial direction of the inner tube body within the protrusion. On the one hand, it can further increase the inlet area of the one-way flow channel and reduce the flow resistance of the refrigerant. On the other hand, it can fully discharge the refrigerant at the bottom of the liquid distribution cavity, reducing the accumulation of refrigerant at the bottom of the liquid distribution cavity.

[0011] A liquid distributor provided according to the present invention, wherein the inner tube body is further provided with exhaust holes communicated with the liquid distribution cavity, and the spray holes are located between the exhaust holes and the one-way flow channels; preferably, the exhaust holes are located at the top of the liquid distribution cavity. This ensures that part of the gaseous refrigerant accumulates at the uppermost part of the liquid distribution cavity, while also ensuring the distribution range of the spray holes on the inner tube body and the space volume of the liquid distribution cavity, maximizing the dispersion range of the refrigerant. The refrigerant in the liquid distribution cavity can flow back into the lumen of the inner tube body through the one-way flow channels and re-enter the liquid distribution cavity along with the refrigerant in the inner tube body, thereby realizing the cyclic flow of the refrigerant between the liquid distribution cavity and the inner tube body.

[0012] A liquid distributor provided according to the present invention, wherein a plurality of the exhaust holes are evenly distributed around the axial direction of the inner tube body; a plurality of the spray holes are evenly distributed along the axial direction of the inner tube body. This further increases the coverage range of the exhaust holes, reduces the exhaust resistance of part of the gaseous refrigerant, fully turbulates the refrigerant within the circumferential range of the liquid distribution cavity, and improves the turbulation effect. The spray holes can spray the refrigerant at various positions of the liquid distribution cavity at various angles. This further increases the coverage range of the spray holes and improves the uniform dispersion effect of the refrigerant.

[0013] A liquid distributor provided according to the present invention, wherein the branch tube body is arranged corresponding to the position of the spray hole, and the end of the branch tube body is inserted into the liquid distribution cavity. The design of the branch tube body can reduce the flow resistance to ensure that the gas-liquid two-phase flow of the refrigerant can smoothly flow into the branch tube body within the liquid distribution cavity.

[0014] The present invention also provides an air conditioner including the liquid distributor described above.

[0015] The air conditioner provided by the present invention is provided with 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 of 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, avoiding the problem of waste of heat exchange area. Therefore, the uniform liquid distribution of the liquid distributor in 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 decrease in the heat exchanger capacity caused by uneven liquid distribution of the liquid distributor.

[0016] The liquid distributor of the embodiment of the present invention is composed of an outer tube body and an inner tube body together to form a main tube body. The outer tube body is sleeved on the outside of the inner tube body. Both the upper end and the lower end of the outer tube body are hermetically connected to the outer wall of the inner tube body. Thus, the space between the outer wall of the inner tube body and the inner wall of the outer tube body forms a liquid distribution cavity, that is, the outer tube body encloses a liquid distribution cavity outside the inner tube body. A plurality of branch tube bodies are connected to the outer tube body and communicate with the liquid distribution cavity. The inner tube body is provided with one-way flow channel spray holes within the range of the liquid distribution cavity. The lumen of the inner tube body is communicated with the liquid distribution cavity through the one-way flow channel, and the spray holes are arranged above the one-way flow channel.

[0017] When the heat exchanger is used as an evaporator, the refrigerant enters the lumen of the inner tube body and can be sprayed out of the spray holes into the liquid distribution cavity, but cannot enter the liquid distribution cavity from the inner tube body through the one-way flow channel. The refrigerant in the liquid distribution cavity can flow back into the lumen of the inner tube body through the one-way flow channel and follow the refrigerant in the inner tube body to enter the liquid distribution cavity again, thereby realizing the circulation of the refrigerant in the liquid distribution cavity and the inner tube body.

[0018] When the air conditioner system is reversed and the heat exchanger is used as a condenser, the liquid refrigerant flows back from different flow paths of the heat exchanger into the branch tube body, enters the liquid distribution cavity between the inner tube body and the outer tube body through the branch tube body. During the process of the liquid refrigerant flowing downward, it gradually converges in the liquid distribution cavity and can first flow into the lumen of the inner tube body through the one-way flow channel located below the spray holes and flow out of the liquid distributor from the lower port of the inner tube body.

[0019] The one-way flow channel is a special flow channel structure, which makes it have one-way fluidity. The one-way flow channel can only enable the refrigerant to flow from the liquid distribution cavity into the lumen of the inner tube body. In addition, the one-way flow channel can also play a role in smoothly returning oil. The compressor oil can be discharged in time through the one-way flow channel to avoid the accumulation of compressor oil. Without this hole, the compressor oil will accumulate in the liquid distribution cavity between the inner tube body and the outer tube body and cannot be discharged. 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 use in the description of the embodiments or the prior art. Obviously, the following drawings 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 is a schematic structural view of a liquid distributor provided by an embodiment of the present invention; Figure 2 is a sectional view of a liquid distributor provided by an embodiment of the present invention; Figure 3 is a schematic structural view of an inner tube body of a liquid distributor provided by an embodiment of the present invention; Figure 4 is Figure 2 an enlarged view of a partial area A in

[0022] Reference numerals: 100, outer tube body; 200, inner tube body; 210, exhaust hole; 220, spray hole; 230, one-way flow channel; 231, main flow channel; 232, resistance flow channel; 240, protrusion; 300, liquid separation cavity; 400, branch tube body. 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. Obviously, 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 and Figure 3 shown, the liquid distributor provided by the embodiment of the present invention includes an outer tube body 100 and an inner tube body 200. The outer tube body 100 is sleeved outside the inner tube body 200 and is connected to the inner tube body 200 to enclose a liquid separation cavity 300. The inner tube body 200 is provided with an exhaust hole 210, a one-way flow channel 230 and a spray hole 220 communicating with the liquid separation cavity 300. The one-way flow channel 230 is located below the spray hole 220, so that the refrigerant flows from the liquid separation cavity 300 into the lumen of the inner tube body 200. The outer tube body 100 is provided with a plurality of branch tube bodies 400 communicating with the liquid separation cavity 300.

[0025] The liquid distributor according to the embodiment of the present invention, the outer tube body 100 and the inner tube body 200 together form the main tube body. The outer tube body 100 is sleeved on the outside of the inner tube body 200. The upper end and the lower end of the outer tube body 100 are hermetically connected to the outer wall of the inner tube body 200. Thus, the space between the outer wall of the inner tube body 200 and the inner wall of the outer tube body 100 forms a liquid distribution cavity 300, that is, the outer tube body 100 encloses the liquid distribution cavity 300 on the outside of the inner tube body 200. A plurality of branch tube bodies 400 are connected to the outer tube body 100 and communicate with the liquid distribution cavity 300. The inner tube body 200 is provided with a one-way flow channel 230 and a spray hole 220 within the range of the liquid distribution cavity 300. The lumen of the inner tube body 200 communicates with the liquid distribution cavity 300 through the one-way flow channel 230, and the spray hole 220 is arranged above the one-way flow channel 230.

[0026] When the heat exchanger is used as an evaporator, the refrigerant enters the lumen of the inner tube body 200 and can be sprayed out from the spray hole 220 into the liquid distribution cavity 300, but cannot enter the liquid distribution cavity 300 from the inner tube body 200 through the one-way flow channel 230. The refrigerant in the liquid distribution cavity 300 can flow back into the lumen of the inner tube body 200 through the one-way flow channel 230 and enter the liquid distribution cavity 300 again following the refrigerant in the inner tube body 200. Thus, the circulation of the refrigerant in the liquid distribution cavity 300 and the inner tube body 200 is realized.

[0027] When the air-conditioning system is reversed and the heat exchanger is used as a condenser, the liquid refrigerant flows back from different flow paths of the heat exchanger into the branch tube body 400 and enters the liquid distribution cavity 300 between the inner tube body 200 and the outer tube body 100 through the branch tube body 400. During the downward flow of the liquid refrigerant, it gradually converges in the liquid distribution cavity 300 and can first flow into the lumen of the inner tube body 200 through the one-way flow channel 230 located below the spray hole 220 and flows out of the liquid distributor from the lower port of the inner tube body 200.

[0028] The one-way flow channel 230 is a special flow channel structure, which makes it have one-way flow property. The one-way flow channel 230 can only allow the refrigerant to flow from the liquid distribution cavity 300 into the lumen of the inner tube body 200. In addition, the one-way flow channel 230 can also play a role in smoothly returning oil. The compressor oil can be discharged in time through the one-way flow channel 230 to avoid the accumulation of compressor oil. Without this hole, the compressor oil will accumulate in the liquid distribution cavity 300 between the inner tube body 200 and the outer tube body 100 and cannot be discharged.

[0029] According to an embodiment provided by the present invention, the one-way flow channel 230 is located at the bottom of the liquid distribution cavity 300. In this embodiment, the upper port of the inner tube body 200 is inserted into the inside of the outer tube body 100 from the lower port of the outer tube body 100. The lower port of the outer tube body 100 is hermetically connected to the outer wall of the inner tube body 200. The upper port of the inner tube body 200 is located outside the outer tube body 100. The bottom of the liquid distribution cavity 300 is located at the lower end position of the outer tube body 100. The installation position of the one-way flow channel 230 on the inner tube body 200 corresponds to the lower end position of the outer tube body 100, that is, the bottom of the liquid distribution cavity 300.

[0030] The one-way flow channel 230 is located at the lowermost part of the liquid distribution cavity 300. After the liquid refrigerant enters the liquid distribution cavity 300 from the branch pipe body 400, it is ensured that the liquid refrigerant first accumulates at the lowermost part of the liquid distribution cavity 300 and flows out of the inner pipe body 200 in the shortest time after entering the liquid distribution cavity 300. Moreover, since the one-way flow channel 230 is located at the bottom of the liquid distribution cavity 300, almost no refrigerant accumulates inside the liquid distribution cavity 300, minimizing the retention amount of the refrigerant in the liquid distributor to the greatest extent.

[0031] According to an embodiment provided by the present invention, a protrusion 240 is provided on the outer wall of the inner pipe body 200, and a one-way flow channel 230 is provided inside the protrusion 240. In this embodiment, a radially outward protruding portion is provided on the outer wall of the inner pipe body 200 to form the protrusion 240. The one-way flow channel 230 is arranged inside the protrusion 240. The arrangement of the protrusion 240 makes the bottom space of the liquid distribution cavity 300 the outer wall of the protrusion 240 and the inner wall of the outer pipe body 100, reducing the bottom space of the liquid distribution cavity 300 and further reducing the retention amount of the refrigerant in the liquid distributor.

[0032] In this embodiment, the protrusion 240 is a columnar structure, and the diameter d of the protrusion 240 should be within a certain range: 1.1Din ≤ d ≤ 0.9Dout. Wherein, Din is the outer diameter of the inner pipe body 200, and Dout is the inner diameter of the outer pipe body 100.

[0033] In other embodiments, the one-way flow channel 230 can also be directly formed on the inner pipe body 200 without setting the protrusion 240. The protrusion 240 can be integrally formed with the inner pipe body 200 or separately provided from the inner pipe body 200. The protrusion 240 is sleeved on the inner pipe body 200, and corresponding holes are provided on the inner pipe body 200 to communicate with the one-way flow channel 230.

[0034] According to an embodiment provided by the present invention, the cross-sectional area of the one-way flow channel 230 is greater than or equal to the cross-sectional area of the spray hole 220. In this embodiment, by expanding the cross-sectional area of the one-way flow channel 230, compared with the capillary tube in the prior art, when the liquid refrigerant flows from the liquid distribution cavity 300 to the lumen of the inner pipe body 200, the cross-sectional area of the one-way flow channel 230 through which it passes is larger, and it can flow in smoothly, effectively reducing the flow resistance of the refrigerant, and thus enabling the resistance to be reduced as much as possible when the refrigeration and heating are reversed.

[0035] It can be understood that the cross-sectional area of the one-way flow channel 230 can be determined according to actual design needs, and the shape of the cross-section can also be set according to actual needs. In this embodiment, the opening of the one-way flow channel 230 on the outer wall of the protrusion 240 is a strip with a certain length.

[0036] Such as Figure 4As shown, according to an embodiment provided by the present invention, the one-way flow channel 230 includes a main flow channel 231 and at least one resistance flow channel 232. Both ends of the resistance flow channel 232 are communicated with the main flow channel 231. The main flow channel 231 gradually inclines outward from the lower part to the upper part along the axial direction of the inner tube body 200. In this embodiment, the one-way flow channel 230 is composed of the main flow channel 231 and at least one resistance flow channel 232. The main flow channel 231 is a flow channel inclined at a certain angle, and the main flow channel 231 gradually moves away from the inner tube body 200 along the axial direction of the inner tube body 200 from bottom to top. The resistance flow channel 232 is curved, and both ends of the resistance flow channel 232 are communicated with the main flow channel 231. Thus, the main flow channel 231 and the resistance flow channel 232 cooperate to form a flow channel of a Tesla valve structure, so as to achieve the effect of controlling the one-way flow of the refrigerant at the one-way flow channel 230.

[0037] In this embodiment, the one-way flow channel 230 is composed of a main flow channel 231 and a resistance flow channel 232, and the resistance flow channel 232 is located above the main flow channel 231. In other embodiments, the one-way flow channel 230 may also be composed of a main flow channel 231 and multiple resistance flow channels 232. The multiple resistance flow channels 232 are arranged in sequence on the main flow channel 231, and the multiple resistance flow channels 232 are arranged in a staggered manner above and below the main flow channel 231 to form a series connection of multiple bends and resistances, which can also achieve the purpose of controlling the one-way flow of the refrigerant.

[0038] In this embodiment, the lower end of the outer tube body 100 forms a converging inclined surface, that is, the cross-sectional area of the lower port of the outer tube body 100 gradually decreases from top to bottom along the axial direction of the outer tube body 100. Therefore, the cross-sectional area of the bottom of the liquid separation cavity 300 also gradually decreases. The protrusion 240 is located at this converging position, and the shape of the protrusion 240 matches the shape of the liquid separation cavity 300 at this place, that is, the protrusion 240 also has a conical part that gradually converges from top to bottom. The extending trend of the main flow channel 231 and the resistance flow channel 232 of the one-way flow channel 230 matches the shape of the protrusion.

[0039] According to an embodiment provided by the present invention, multiple one-way flow channels 230 are uniformly distributed around the axial direction of the inner tube body 200 in the protrusion 240. In this embodiment, the number of the one-way flow channels 230 is multiple, and the multiple one-way flow channels 230 are uniformly arranged in the circumferential direction of the inner tube body 200, that is, the openings of the one-way flow channels 230 on the protrusion 240 face various angles at the bottom of the liquid separation cavity 300. On the one hand, it can further increase the inlet area of the one-way flow channel 230 and reduce the flow resistance of the refrigerant. On the other hand, it can fully discharge the refrigerant at the bottom of the liquid separation cavity 300 and reduce the accumulation of the refrigerant at the bottom of the liquid separation cavity 300.

[0040] In an embodiment provided by the present invention, in addition to being configured as a Tesla valve structure, the one-way flow channel 230 can also be configured to be provided with a one-way valve member in the main flow channel 231. When the heat exchanger is an evaporator, the refrigerant cannot pass through the main flow channel 231. When the heat exchanger is a condenser, the liquid refrigerant passes through the main flow channel 231, achieving the same effect as that of using a Tesla valve.

[0041] In an embodiment provided by the present invention, the inner tube body 200 is further provided with an exhaust hole 210 communicating with the liquid distribution cavity 300, and the spray hole 220 is located between the exhaust hole 210 and the one-way flow channel 230. In this embodiment, the inner tube body 200 is further provided with an exhaust hole 210, and the exhaust hole 210 can also communicate the inside of the inner tube body 200 with the liquid distribution cavity 300. The exhaust hole 210 and the spray hole 220 are provided within the range of the liquid distribution cavity 300 of the inner tube body 200. The exhaust hole 210 is provided above the spray hole 220. The one-way flow channel 230, the spray hole 220, and the exhaust hole 210 are sequentially arranged along the axial direction of the inner tube body 200 from bottom to top.

[0042] When the heat exchanger is an evaporator, the gas-liquid two-phase refrigerant enters the inner tube body 200 from the lower port of the inner tube body 200. The refrigerant in the inner tube body 200 will be sprayed into the liquid distribution cavity 300 between the inner tube body 200 and the outer tube body 100 through the spray hole 220, and is evenly dispersed in the liquid distribution cavity 300, and then is distributed to different flow paths of the heat exchanger through each branch tube body 400 for heat exchange. Affected by gravity, part of the gaseous refrigerant in the inner tube body 200 rises to the exhaust hole 210 and can enter the liquid distribution cavity 300 through the exhaust hole 210. During the process of part of the gaseous refrigerant flowing downward after being discharged from the exhaust hole 210, it can also play a role in disturbing the flow of the refrigerant in the liquid distribution cavity 300, which is beneficial to making the refrigerant distribution more uniform.

[0043] The liquid distributor of the present invention replaces the existing Venturi-type liquid distributor through the structural cooperation of the inner tube body 200 and the outer tube body 100, fundamentally changes the type of the liquid distributor structure, can solve the problems generated by the existing Venturi-type liquid distributor, does not require the setting of capillary liquid distribution tubes, and even less requires the debugging of the capillary length. It has the advantages of low cost, simple structure, small volume, and easy debugging. Moreover, the design of the exhaust hole 210 of the inner tube body 200 can further improve the uniformity of the refrigerant dispersion of the liquid distributor.

[0044] According to an embodiment provided by the present invention, the exhaust hole 210 is located at the top of the liquid distribution cavity 300. In this embodiment, the upper port of the inner tube body 200 is inserted into the inner part of the outer tube body 100 from the lower port of the outer tube body 100. The upper end of the outer tube body 100 is hermetically connected to the upper port of the inner tube body 200. The top of the liquid distribution cavity 300 is located at the upper ends of the inner tube body 200 and the outer tube body 100. The exhaust hole 210 is provided at the upper end position of the inner tube body 200, corresponding to the top of the liquid distribution cavity 300.

[0045] The exhaust hole 210 is located at the uppermost part of the main body. After the gas-liquid two-phase refrigerant enters the inner tube body 200 from the lower port of the inner tube body 200, it is ensured that part of the gaseous refrigerant accumulates at the uppermost part of the liquid separation cavity 300. At the same time, the distribution range of the spray holes 220 on the inner tube body 200 and the space volume of the liquid separation cavity 300 can be ensured, so as to maximize the dispersion range of the refrigerant.

[0046] According to an embodiment provided by the present invention, a plurality of exhaust holes 210 are evenly distributed around the axial direction of the inner tube body 200. In this embodiment, the number of exhaust holes 210 is multiple, and the multiple exhaust holes 210 are evenly arranged in the circumferential direction at the upper end of the inner tube body 200, that is, the exhaust holes 210 face the top of the liquid separation cavity 300 at various angles on the inner tube body 200, which can further increase the coverage range of the exhaust holes 210, reduce the exhaust resistance of part of the gaseous refrigerant, fully disturb the refrigerant within the circumferential range of the liquid separation cavity 300, and improve the turbulence effect.

[0047] According to an embodiment provided by the present invention, a plurality of spray holes 220 are evenly distributed along the axial direction of the inner tube body 200. In this embodiment, the number of spray holes 220 is multiple, and the multiple spray holes 220 are evenly arranged on the inner tube body 200. The spray holes 220 are divided into multiple columns, and each column of spray holes 220 is evenly distributed along the axial direction of the inner tube body 200. The multiple columns of spray holes 220 are evenly distributed around the axial direction of the inner tube body 200, so as to form that within the range of the liquid separation cavity 300, the spray holes 220 can spray the refrigerant at various positions of the liquid separation cavity 300 at various angles. Further increase the coverage range of the spray holes 220 and improve the uniform effect of refrigerant dispersion.

[0048] In other embodiments, the liquid distributor can also be an outer tube body 100 sleeved outside a plurality of inner tube bodies 200, that is, a plurality of inner tube bodies 200 are arranged in the lumen of the outer tube body 100. The inner tube body 200 can also be a combined design of a main pipeline and a plurality of branch pipelines. The outside of the outer tube body 100 is the main pipeline part, and a plurality of branch pipeline parts are formed inside the outer tube body 100. Spray holes 220, exhaust holes 210 and one-way flow channels 230 can be arranged on each branch pipeline. The structures and arrangement forms of the spray holes 220, exhaust holes 210 and one-way flow channels 230 can be the uniform arrangement forms of the above embodiments, or can be selected according to actual needs.

[0049] According to an embodiment provided by the present invention, the branch pipe body 400 is arranged corresponding to the position of the spray hole 220, and the end of the branch pipe body 400 is inserted into the liquid separation cavity 300. In this embodiment, openings corresponding to the branch pipe bodies 400 one by one are provided on the pipe wall of the outer pipe body 100 for inserting the branch pipe bodies 400. The plurality of branch pipe bodies 400 are uniformly distributed along the axial direction of the outer pipe body 100, that is, the refrigerant in each position of the liquid separation cavity 300 is transported to the heat exchanger through the branch pipes. One end of the branch pipe body 400 is inserted into the liquid separation cavity 300 through the opening of the outer pipe body 100, and there is a certain distance between it and the outer wall of the inner pipe body 200. The design of the branch pipe body 400 can reduce the flow resistance to ensure that the refrigerant gas-liquid two-phase flow can smoothly flow into the branch pipe body 400 in the liquid separation cavity 300.

[0050] It can be understood that the setting position of the branch pipe body 400 corresponds to the concentrated setting position of the spray holes 220 on the inner pipe body 200. The branch pipe body 400 can be directly opposite to the spray holes 220 and correspond to them one by one, or can be arranged at staggered intervals with the spray holes 220. In this embodiment, the number of spray holes 220 provided on the inner pipe body 200 is the same as the number of branch pipe bodies 400, and the spray holes 220 are directly opposite to the branch pipe bodies 400.

[0051] The air conditioner provided by the present invention will be described below. The air conditioner described below can be mutually referred to the liquid separator described above.

[0052] An embodiment of the present invention also provides an air conditioner, including the liquid separator as described in the above embodiment.

[0053] For the air conditioner of the embodiment of the present invention, with the above-mentioned liquid separator set, in the air conditioner circulation system, the liquid separator distributes the gas-liquid two-phase refrigerant to each pipeline of the evaporator for heat exchange. By using the liquid separator of the embodiment of the present invention, it can ensure uniform liquid separation, 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, avoiding the problem of waste of heat exchange area. Therefore, the uniform liquid separation of the liquid separator of 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 decline in the heat exchanger capacity caused by uneven liquid separation of the liquid separator.

[0054] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; 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 recorded in the foregoing embodiments, or perform equivalent replacements on 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 distributor, characterized in that, It includes an outer tube body (100) and an inner tube body (200). The outer tube body (100) is sleeved outside the inner tube body (200) and is connected to the inner tube body (200) to enclose a liquid separation cavity (300). The inner tube body (200) is provided with a one-way flow channel (230) and a spray hole (220) that communicate with the liquid separation cavity (300). The one-way flow channel (230) is located below the spray hole (220) so that the refrigerant flows from the liquid separation cavity (300) into the lumen of the inner tube body (200). The outer tube body (100) is provided with a plurality of branch tube bodies (400) that communicate with the liquid separation cavity (300).

2. The dispenser according to claim 1, characterized in that, The one-way flow channel (230) is located at the bottom of the liquid separation cavity (300).

3. The dispenser according to claim 1, characterized in that, A protrusion (240) is provided on the outer wall of the inner tube body (200), and the one-way flow channel (230) is provided inside the protrusion (240).

4. The dispenser according to claim 1, wherein, The cross-sectional area of the one-way flow channel (230) is greater than or equal to the cross-sectional area of the spray hole (220).

5. The dispenser according to claim 1, wherein The one-way flow channel (230) includes a main flow channel (231) and at least one resistance flow channel (232). Both ends of the resistance flow channel (232) communicate with the main flow channel (231). The main flow channel (231) gradually inclines towards the outer tube body (100) from bottom to top along the axial direction of the inner tube body (200).

6. The dispenser according to claim 3, characterized in that A plurality of the one-way flow channels (230) are evenly distributed around the axial direction of the inner tube body (200) inside the protrusion (240).

7. The dispenser according to any one of claims 1 to 6, characterized in that The inner tube body (200) is further provided with an exhaust hole (210) that communicates with the liquid separation cavity (300). The spray hole (220) is located between the exhaust hole (210) and the one-way flow channel (230); preferably, the exhaust hole (210) is located at the top of the liquid separation cavity (300).

8. The dispenser according to claim 7, wherein, A plurality of the exhaust holes (210) are evenly distributed around the axial direction of the inner tube body (200); a plurality of the spray holes (220) are evenly distributed along the axial direction of the inner tube body (200).

9. The dispenser according to any one of claims 1 to 8, characterized in that, The branch tube body (400) is arranged at a position corresponding to the spray hole (220), and the end of the branch tube body (400) is inserted into the liquid separation cavity (300).

10. An air conditioner, characterized in that, It includes the liquid separator according to any one of claims 1 to 9.

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