Liquid separation device and air conditioning system

Abstract

The utility model relates to the technical field of air conditioners, and provides a liquid separating device and an air conditioning system, the device comprises a liquid inlet pipe, an outer pipe, a separating part and a plurality of liquid outlet branch pipes, the first end of the liquid inlet pipe is provided with an opening, and the side wall of the second end of the liquid inlet pipe is provided with a first through hole; the liquid inlet pipe is sleeved with the outer pipe, and a distribution cavity is defined by the outer pipe and the liquid inlet pipe; the partition component is arranged between the liquid inlet pipe and the outer pipe so as to divide the distribution cavity into a liquid inlet area and a liquid outlet area which are communicated with each other, and the liquid inlet area is communicated with the first through hole; the liquid inlet area is provided with a flow equalizing component; and the plurality of liquid outlet branch pipes are communicated with the liquid outlet area. Refrigerant enters the liquid inlet pipe through the opening of the liquid inlet pipe and enters the liquid inlet area through the first through hole, flow equalization is achieved under the action of the flow equalization component, and then the refrigerant is evenly distributed into the liquid outlet branch pipes after being mixed through the liquid outlet area. The condition that refrigerants entering all flow paths of the heat exchanger are not evenly distributed can be effectively improved, and the heat exchange performance of the heat exchanger is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to air conditioning technical field especially relates to a liquid distribution device and air conditioning system. BACKGROUND

[0002] In the air conditioning refrigeration system, the heat exchanger (i.e. heat exchanger) plays a vital role. Heat exchanger realizes the effective conversion of energy through the heat exchange between two or more different temperature fluids. For the heat exchanger containing multiple parallel flow paths, the uniformity of each flow path liquid distribution will affect the performance of the heat exchanger.

[0003] In the prior art, the heat exchanger is controlled by the liquid distributor. In actual refrigeration system operation, the refrigerant entering each flow path of the heat exchanger is not uniform, which leads to uneven heat exchange of the heat exchanger, thereby reducing the heat exchange performance of the heat exchanger. UTILITY MODEL CONTENTS

[0004] The utility model provides a kind of liquid distribution device and air conditioning system to solve the refrigerant uneven distribution of each flow path of heat exchanger in prior art, can effectively improve the condition that refrigerant is not evenly distributed into each flow path of heat exchanger, improve the heat exchange performance of heat exchanger.

[0005] The utility model provides a kind of liquid distribution device, comprising:

[0006] liquid inlet pipe, the first end of the liquid inlet pipe is provided with opening, the second end side wall of the liquid inlet pipe is provided with first through-hole;

[0007] outer tube, the outer tube is sleeved in the liquid inlet pipe, and distribution cavity is formed between the outer tube and the liquid inlet pipe;

[0008] separation component, it is arranged between the liquid inlet pipe and the outer tube, to separate the distribution cavity into liquid inlet area and liquid outlet area that are connected, and the liquid inlet area is communicated with the first through-hole;

[0009] flow uniformity component, it is arranged in the liquid inlet area;

[0010] multiple liquid outlet branch pipes, it is communicated with the liquid outlet area.

[0011] According to the utility model provides a kind of liquid distribution device, the second end side wall of the liquid inlet pipe is provided with multiple first through-holes arranged along the axial direction;

[0012] Multiple liquid outlet branch pipes are arranged along the axial direction of the outer tube.

[0013] According to the utility model provides a kind of liquid distribution device, the cross-sectional area of multiple first through-holes gradually decreases from the second end of the liquid inlet pipe to the first end of the liquid inlet pipe.

[0014] According to the utility model provides a kind of liquid distributor, the separating component includes two separating plates arranged at intervals, the separating plate is connected between the liquid inlet pipe and the outer pipe, and the separating plate has a distance between at least one end along the axial direction of the outer pipe and the inner wall of the outer pipe.

[0015] According to the utility model provides a kind of liquid distributor, two the separating plate is symmetrically arranged about the center axis of the liquid inlet pipe.

[0016] According to the utility model provides a kind of liquid distributor, the first through hole and the liquid outlet branch pipe are symmetrically arranged about the center axis of the liquid inlet pipe, and the first through hole, the liquid outlet branch pipe and two the separating plate are uniformly distributed along the circumference.

[0017] According to the utility model provides a kind of liquid distributor, the flow equalizing component includes a plurality of flow equalizing plates, and the flow equalizing plate is arranged between the liquid inlet pipe and the outer pipe.

[0018] According to the utility model provides a kind of liquid distributor, the flow equalizing plate is arranged between two adjacent first through holes.

[0019] According to the utility model provides a kind of liquid distributor, at least one end of the separating plate is connected with ring plate, the ring plate is located between the liquid inlet pipe and the outer pipe, and the ring plate is provided with second through hole uniformly distributed.

[0020] The utility model also provides a kind of air conditioning system, including evaporimeter and as described in any one of the above liquid distributor, and the liquid outlet branch pipe is connected to the evaporimeter.

[0021] The liquid distributor provided by the utility model is arranged with first through hole on liquid inlet pipe, and separating component is arranged between liquid inlet pipe and outer pipe, to separate distribution cavity between outer pipe and liquid inlet pipe into liquid inlet area and liquid outlet area in communication, and liquid inlet area is provided with flow equalizing component;In this way, refrigerant enters the inside of liquid inlet pipe through the opening of liquid inlet pipe, and enters liquid inlet area through first through hole, realizes flow equalization under the action of flow equalizing component, then mixes flow after liquid outlet area, and then evenly distributes refrigerant to each liquid outlet branch pipe, to effectively improve the uneven distribution of refrigerant into each flow path of heat exchanger, and improve the heat exchange performance of heat exchanger. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme of the utility model or the prior art, the following will be a brief introduction to the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating labor.

[0023] Figure 1is a structure schematic view of the liquid separating device.

[0024] Figure 2 is Figure 1 A-A sectional view structure schematic view of the liquid separating device.

[0025] Figure 3 is Figure 1 B-B sectional view structure schematic view of the liquid separating device.

[0026] Figure 4 is a structure schematic view of the liquid separating device.

[0027] Figure 5 is Figure 4 C-C sectional view structure schematic view of the liquid separating device.

[0028] Figure 6 is a structure schematic view of the liquid separating device.

[0029] Figure 7 is Figure 6 D-D sectional view structure schematic view of the liquid separating device.

[0030] Reference signs:

[0031] 100, liquid inlet pipe; 110, first through hole;

[0032] 200, outer pipe;

[0033] 300, separation component; 310, separation plate;

[0034] 400, flow equalizing component; 410, flow equalizing plate;

[0035] 500, distribution cavity; 510, liquid inlet area; 520, liquid outlet area;

[0036] 600, liquid outlet branch pipe. DETAILED DESCRIPTION

[0037] The embodiments of the present application will be further described below in conjunction with the drawings and examples. The following examples are used to illustrate the present application, but cannot be used to limit the scope of the present application.

[0038] In the description of the embodiments of the utility model, it needs to be explained that, the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the utility model and simplifying the description, and therefore cannot be understood as limiting the embodiments of the utility model. The terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0039] In the description of the embodiments of the utility model, it needs to be explained that, unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium. For ordinary skilled in the art, the specific meaning of the above terms in the embodiments of the utility model can be understood according to the specific circumstances.

[0040] In the embodiments of the utility model, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" of the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" of the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0041] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the utility model. In the present application, the illustrative description of the above terms is not necessarily for the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the present application and the features of different embodiments or examples without contradiction.

[0042] The following will be combined Figures 1-7 The utility model discloses a liquid separation device.

[0043] The utility model discloses a first aspect embodiment proposes a kind of liquid distribution devices, such as Figures 1 to 3 As shown, the liquid distribution device includes liquid inlet pipe 100, the outer tube 200 of being set to liquid inlet pipe 100, connect to the multiple liquid outlet branch pipes 600 of outer tube 200, and the separating component 300 and the uniform flow component 400 between the setting of liquid inlet pipe 100 and outer tube 200.

[0044] Wherein, the first end of liquid inlet pipe 100 is provided with opening, and the second end side wall of liquid inlet pipe 100 is provided with first through-hole 110;Outer tube 200 is set to liquid inlet pipe 100, and distribution cavity 500 is surrounded between outer tube 200 and liquid inlet pipe 100;Separating component 300 is arranged between liquid inlet pipe 100 and outer tube 200, to separate distribution cavity 500 into the liquid inlet area 510 and liquid outlet area 520 that are connected, and the liquid inlet area 510 is communicated with first through-hole 110;Uniform flow component 400 is arranged in liquid inlet area 510, and uniform flow component 400 is used to disturb the coolant entering liquid inlet area 510;Multiple liquid outlet branch pipes 600 are communicated with liquid outlet area 520.

[0045] It can be understood that outer tube 200 is spaced apart and set to liquid inlet pipe 100, and both ends of outer tube 200 are connected with liquid inlet pipe 100, to form distribution cavity 500 between outer tube 200 and liquid inlet pipe 100, separating component 300 is arranged between liquid inlet pipe 100 and outer tube 200, to separate distribution cavity 500 into liquid inlet area 510 and liquid outlet area 520, and the liquid inlet area 510 and liquid outlet area 520 are communicated;The opening of the first end of liquid inlet pipe 100 is used as liquid inlet, and first through-hole 110 is provided in the position corresponding to liquid inlet area 510 of liquid inlet pipe 100, and liquid inlet passage is formed in liquid inlet pipe 100, which is communicated with first through-hole 110 and liquid inlet;Multiple liquid outlet branch pipes 600 are connected to the outer wall of outer tube 200, and multiple liquid outlet branch pipes 600 are communicated with liquid outlet area 520.

[0046] It can be understood that refrigerant enters the inside of liquid inlet pipe 100 through the opening of liquid inlet pipe 100, enters liquid inlet area 510 through first through-hole 110, and enters liquid outlet area 520 after uniform flow by uniform flow component 400, to evenly distribute refrigerant into each liquid outlet branch pipe 600.It needs to be explained that refrigerant can be gas-liquid two-phase refrigerant.

[0047] The liquid distribution device provided by the embodiment of the utility model, through the first through hole 110 arranged on the liquid inlet pipe 100, and through the separation component 300 arranged between the liquid inlet pipe 100 and the outer pipe 200, the distribution cavity 500 between the outer pipe 200 and the liquid inlet pipe 100 is separated into the liquid inlet area 510 and the liquid outlet area 520 in communication, and the liquid inlet area 510 is provided with the flow equalizing component 400; in this way, the refrigerant enters the liquid inlet pipe 100 through the opening of the liquid inlet pipe 100, enters the liquid inlet area 510 through the first through hole 110, realizes flow equalization under the action of the flow equalizing component 400, then enters the liquid outlet area 520 and is mixed in the liquid outlet area 520, and the refrigerant is evenly distributed into each liquid outlet branch pipe 600, thereby effectively improving the uneven distribution of the refrigerant into each flow path of the heat exchanger and improving the heat exchange performance of the heat exchanger.

[0048] It should be noted that the conventional liquid distribution device controls the flow distribution of the heat exchanger through the combination of the liquid distributor and the capillary tube, but the processing cost of the flow distribution mode is high, and the capillary tube has a long flow distribution debugging experimental period, so that the heat exchange efficiency is low. The first through hole 110 is arranged on the liquid inlet pipe 100, and the separation component 300 and the flow equalizing component 400 are arranged between the liquid inlet pipe 100 and the outer pipe 200, that is, the refrigerant can be evenly distributed into each liquid outlet branch pipe 600, compared with the capillary tube, the structure of the liquid distribution device of the application is simpler, the processing cost and the debugging period are reduced, and the refrigerant can be evenly distributed into each flow path of the heat exchanger, so that all heat exchange regions can work effectively, overheating or overcooling of some parts is avoided, the heat exchange efficiency is improved, and the performance and reliability of the entire air conditioning system are improved.

[0049] In an embodiment of the utility model, as shown in Figures 3 to 5 The second end side wall of the liquid inlet pipe 100 is provided with a plurality of first through holes 110 arranged along the axial direction; and the plurality of liquid outlet branch pipes 600 are arranged along the axial direction of the outer pipe 200.

[0050] It can be understood that the side wall of the liquid inlet pipe 100 is provided with a plurality of first through holes 110, the plurality of first through holes 110 are arranged along the axial direction of the liquid inlet pipe 100, and the plurality of first through holes 110 are used for distributing the refrigerant into the distribution cavity 500; and the plurality of liquid inlet branch pipes are arranged along the axial direction of the outer pipe 200.

[0051] Optionally, the outer pipe 200 is coaxially sleeved on the liquid inlet pipe 100, the plurality of first through holes 110 are equally arranged along the axial direction, and the plurality of liquid outlet branch pipes are also equally arranged along the axial direction.

[0052] Further, the first through hole 110 and the liquid outlet branch pipe 600 are located on opposite sides of the liquid inlet pipe 100, the mixing flow path of the refrigerant through the liquid inlet area 510 and the liquid outlet area 520 is increased, and the uniformity of the refrigerant entering the plurality of liquid outlet branch pipes 600 is further improved.

[0053] In one embodiment of the present application, the cross-sectional area of the plurality of first through holes 110 gradually decreases from the second end of the liquid inlet pipe 100 to the first end of the liquid inlet pipe 100; the cross section of the first through hole 110 can be circular, oval or other shapes.

[0054] As shown in Figure 1 and Figure 3 , the outer tube 200 is arranged along the vertical direction, and the plurality of first through holes 110 are arranged along the vertical direction, and the cross section of the plurality of first through holes 110 decreases from top to bottom, which to some extent makes up for the uneven distribution of refrigerant caused by gravity.

[0055] Optionally, as shown in Figure 2 , Figure 3 and , the separation component 300 includes two spaced apart separation plates 310, the separation plate 310 is connected between the liquid inlet pipe 100 and the outer tube 200, and the separation plate 310 has a distance between the outer tube 200 and the inner wall of the outer tube 200 along at least one end of the outer tube 200.

[0056] It can be understood that the two separation plates 310 are arranged between the liquid inlet pipe 100 and the outer tube 200 along the circumference, one side of the separation plate 310 is connected to the outer wall of the liquid inlet pipe 100, and the other side of the separation plate 310 is connected to the inner wall of the outer tube 200, so that the two separation plates 310 divide the annular cavity between the liquid inlet pipe 100 and the outer tube 200 into two parts, which are the liquid inlet area 510 and the liquid outlet area 520.

[0057] Preferably, the two separation plates 310 are symmetrically arranged about the center axis of the liquid inlet pipe 100, so that the liquid inlet area 510 and the liquid outlet area 520 are both semi-annular structures. Of course, in other embodiments, the arrangement position of the separation plate 310 can be adjusted as needed to make the liquid inlet area 510 larger than the liquid outlet area 520, or the liquid inlet area 510 smaller than the liquid outlet area 520, to reduce the accumulation of liquid refrigerant.

[0058] It should be noted that the separation plate 310 can also be arranged in a spiral to improve the turbulent flow of the liquid inlet area 510 to the refrigerant.

[0059] Figure 2 Further, as shown in Figure 4 , Figure 5 and , the first through hole 110 and the liquid outlet branch pipe 600 are symmetrically arranged about the center axis of the liquid inlet pipe 100, and the first through hole 110, the liquid outlet branch pipe 600 and the two separation plates 310 are circumferentially distributed.

[0060] It can be understood that the outer tube 200 is coaxially sleeved on the liquid inlet pipe 100, and a distribution cavity 500 is formed between the outer tube 200 and the liquid inlet pipe 100. The distribution cavity 500 is annular, and two opposite partition plates 310 are arranged in the distribution cavity 500 between the outer tube 200 and the liquid inlet pipe 100, so as to divide the distribution cavity 500 into a liquid inlet area 510 and a liquid outlet area 520 in a half-ring shape. The middle part of the liquid inlet pipe 100 corresponding to the liquid inlet area 510 is provided with a plurality of first through holes 110 in the axial direction, and the middle part of the outer tube 200 corresponding to the liquid outlet area 520 is connected with a plurality of liquid outlet branch pipes 600 arranged in the axial direction, and each liquid outlet branch pipe 600 is arranged in the radial direction.

[0061] It should be noted that the communication between the liquid inlet area 510 and the liquid outlet area 520 can be the communication between the upper part of the liquid inlet area 510 and the upper part of the liquid outlet area 520, the communication between the lower part of the liquid inlet area 510 and the lower part of the liquid outlet area 520, or the communication between the middle part of the liquid inlet area 510 and the middle part of the liquid outlet area 520. Of course, it can also be a combination of two or three of the upper part of the liquid inlet area 510 and the upper part of the liquid outlet area 520, the lower part of the liquid inlet area 510 and the lower part of the liquid outlet area 520, and the middle part of the liquid inlet area 510 and the middle part of the liquid outlet area 520.

[0062] In the embodiment, as shown in the figure, Figure 5 the upper part of the liquid inlet area 510 and the upper part of the liquid outlet area 520 are communicated, and at the same time, the lower part of the liquid inlet area 510 and the lower part of the liquid outlet area 520 are communicated, so as to circulate the refrigerant.

[0063] Optionally, there is a distance between the upper end of the partition plate 310 and the top end of the outer tube 200, so as to form an upper passage for communicating the upper part of the liquid inlet area 510 and the upper part of the liquid outlet area 520 between the upper end of the partition plate 310 and the top end of the outer tube 200. There is also a distance between the lower end of the partition plate 310 and the bottom end of the outer tube 200, so as to form a lower passage for communicating the lower part of the liquid inlet area 510 and the lower part of the liquid outlet area 520 between the lower end of the partition plate 310 and the bottom end of the outer tube 200. In this way, the distribution cavity 500 is divided into the liquid inlet area 510 and the liquid outlet area 520 by the two partition plates 310, and the liquid inlet area 510 and the liquid outlet area 520 have passages (the upper passage and the lower passage) at the top and the bottom, so that the gas-liquid two-phase flow is fully mixed in the liquid inlet area 510, and then enters the liquid outlet area 520 through the upper and lower passages, so as to reduce the influence of gravity. After the secondary mixing in the liquid outlet area 520, the gas-liquid two-phase flow is evenly distributed to each liquid outlet branch pipe 600.

[0064] It should be noted that the refrigerant enters the upper passage and the lower passage from the liquid inlet area 510, and the top end wall of the outer tube 200 and the bottom end wall of the outer tube 200 will produce a turbulent effect on the refrigerant, so as to achieve good mixing effect, and distribute the mixed refrigerant to the liquid outlet area 520, further improving the uniformity of the refrigerant distribution to each liquid outlet branch pipe 600.

[0065] Further, the partition plate 310 is connected with a ring plate (not shown in the figure) at least one end along the axial direction of the outer tube 200, the ring plate is located between the liquid inlet tube 100 and the outer tube 200, and the ring plate is provided with uniformly distributed second through holes.

[0066] Specifically, the ring plate can be connected to the upper end of the partition plate 310, the inner ring surface of the ring plate is connected to the outer wall of the liquid inlet tube 100, the outer ring surface of the ring plate is connected to the inner wall of the outer tube 200, and the second through holes are uniformly distributed on the ring plate; the ring plate can also be connected to the lower end of the partition plate 310; the ring plate can also be connected to the upper end and the lower end of the partition plate 310.

[0067] It can be understood that the refrigerant in the liquid inlet area 510 enters the corresponding upper passage and / or lower passage through part of the second through holes on the ring plate, and then enters the liquid outlet area 520 through the remaining second through holes on the ring plate; in this way, the uniformly distributed second through holes can improve the uniformity of the refrigerant flow.

[0068] In other embodiments, the upper end of the partition plate 310 and the lower end of the partition plate 310 can be connected to the outer tube 200, and the upper part of the partition plate 310 and the lower part of the partition plate 310 are provided with third through holes to realize the communication of the liquid inlet area 510 and the liquid outlet area 520.

[0069] In an embodiment of the present application, as shown in Figure 3 , Figure 6 and Figure 7 , the flow uniformizing component 400 includes a plurality of flow uniformizing plates 410, and the flow uniformizing plates 410 are arranged between the liquid inlet tube 100 and the outer tube 200.

[0070] It can be understood that the flow uniformizing plates 410 are arranged in the liquid inlet area 510 and located on the side opposite to the liquid outlet branch pipe 600, and the refrigerant in the gas-liquid mixed state flows out from the first through hole 110 of the liquid inlet tube 100 and hits the wall surface of the outer tube 200 or the flow uniformizing plate 410 to change the flow direction and then flows into the partition plate 310; in this way, the liquid turbulence can be strengthened, thereby enhancing the uniformity of the gas-liquid two-phase flow at the plurality of liquid outlet branch pipes 600.

[0071] For example, the flow uniformizing plate 410 can be in the form of a flat plate, an arc shape or other structural forms, as long as it can realize the function of strengthening the liquid turbulence.

[0072] Optionally, one end of the flow uniformizing plate 410 is connected to the outer wall of the liquid inlet tube 100, the other end of the flow uniformizing plate 410 is connected to the inner wall of the outer tube 200, and the plurality of flow uniformizing plates 410 are arranged at intervals.

[0073] In this embodiment, the flow equalization component 400 includes a plurality of flow equalization plates 410 arranged at intervals along the axial direction of the outer tube 200. The plurality of flow equalization plates 410 and a plurality of first through holes 110 are arranged along the same axial direction, and the flow equalization plates 410 and the first through holes 110 are staggered, that is, a flow equalization plate 410 is arranged between two adjacent first through holes 110. Of course, in other embodiments, the flow equalization plates 410 can also be disposed in other areas between the liquid inlet pipe 100 and the outer tube 200, for example, the plurality of flow equalization plates 410 are staggered circumferentially.

[0074] It should be noted that the flow equalization plate 410 can be configured in two ways: one end of the flow equalization plate 410 is connected to the outer wall of the inlet pipe 100, and the other end of the flow equalization plate 410 is at a distance from the inner wall of the outer pipe 200; or one end of the flow equalization plate 410 is at a distance from the outer wall of the inlet pipe 100, and the other end of the flow equalization plate 410 is connected to the inner wall of the outer pipe 200. Of course, the flow equalization plate 410 can be configured in either of these two ways.

[0075] In one embodiment of the present invention, the inlet pipe 100 has a first pipe section and a second pipe section that forms a predetermined angle with the first pipe section at the connection point, and the outer pipe 200 is sleeved on the second pipe section.

[0076] Optionally, the liquid inlet tube 100 is made of copper. Of course, the liquid inlet tube 100 can also be made of brass or other suitable materials.

[0077] For example, such as Figure 1 and Figure 5 As shown, the first and second pipe sections have the same diameter, resulting in less resistance to refrigerant flow within the inlet pipe 100. The first pipe section includes a straight section and a bend. The straight section extends vertically and is a generally cylindrical hollow tube with a first centerline. The bend is configured to connect to both the straight section and the second pipe section. The junction between the bend and the second pipe section is the connection point between the first and second pipe sections. The second pipe section is also a generally cylindrical hollow tube with a second centerline. The first and second pipe sections are clamped to form a predetermined angle. It should be noted that the predetermined angle is the angle formed by the clamping of the first centerline of the straight section and the second centerline of the second pipe section, and the predetermined angle ranges from 60° to 120°. Preferably, the predetermined angle is 90°.

[0078] It can be understood that, in order to enable the refrigerant to be uniformly distributed into each coil of the heat exchanger, the liquid distribution device needs to be installed in a substantially vertical direction, so as to ensure that the liquid refrigerant flowing out of each liquid outlet branch pipe 600 can flow into the heat exchanger in a substantially horizontal direction, thereby avoiding uneven distribution of the refrigerant due to the influence of gravity. In actual pipeline arrangement, if the liquid inlet pipe 100 is configured as a straight pipe, it can only be arranged in a vertical direction, which is not conducive to the pipeline connection of the liquid distribution device and other components (such as an expansion valve). Therefore, by configuring the first pipe segment and the second pipe segment to be clamped at a predetermined angle, it can be ensured that the liquid distribution device is installed in a substantially vertical direction, and the pipeline arrangement can be facilitated.

[0079] The second aspect of the embodiments of the utility model provides a kind of air conditioning system, which comprises evaporator and the liquid distribution device provided in any of the above embodiments, and the liquid outlet branch pipe 600 is connected to evaporator.

[0080] For example, the liquid distribution device can be applied to a multi-connected heat pump air conditioning system or a household air conditioning system, and is designed to be located near the evaporator. Optionally, the liquid distribution device is arranged between the expansion valve and the evaporator.

[0081] Specifically, the liquid distribution device is arranged between the outlet of the electronic expansion valve and the inlet of the heat exchange pipe of the evaporator, the first end of the liquid inlet pipe 100 is connected to the outlet of the electronic expansion valve, and the plurality of liquid outlet branch pipes 600 are respectively connected to the inlets of the heat exchange pipes of the evaporator; the liquid distribution device is used to uniformly distribute the gas-liquid two-phase refrigerant into each branch of the evaporator. It should be noted that the liquid distribution device itself does not participate in heat exchange, and there is no requirement for the type of refrigerant, i.e., the refrigerant currently used in the air conditioning system can be used in the system of the present embodiment.

[0082] It can be understood that the gas-liquid two-phase refrigerant output by the outlet of the expansion valve first enters the inside of the liquid inlet pipe 100, and then enters the liquid inlet area 510 through the plurality of first through holes 110 from top to bottom on the liquid inlet pipe 100. Under the action of the flow equalizing plate 410, the gas-liquid two-phase refrigerant is disturbed to realize the first flow equalization, and the disturbance of the refrigerant can improve the heat exchange coefficient; then the gas-liquid two-phase refrigerant enters the liquid outlet area 520 through the passages on the partition plate 310, and is subjected to the second flow equalization in the liquid outlet area 520, and then flows into the heat exchanger through the liquid outlet branch pipes 600.

[0083] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, but not to limit them; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for some technical features; and such 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 utility model.

Claims

1. A liquid separation device, characterized by, The application relates to a liquid distribution device. The liquid inlet pipe is provided with an opening at the first end, and a first through hole is arranged in the side wall of the second end of the liquid inlet pipe. The outer pipe is sleeved on the liquid inlet pipe, and a distribution cavity is formed between the liquid inlet pipe and the outer pipe. A separation component is arranged between the liquid inlet pipe and the outer pipe to separate the distribution cavity into a liquid inlet area and a liquid outlet area which are connected. A flow uniformization component is arranged in the liquid inlet area. A plurality of liquid outlet branch pipes are connected to the liquid outlet area.

2. The liquid separation device according to claim 1, wherein A plurality of first through holes are arranged in the side wall of the second end of the liquid inlet pipe along the axial direction. The plurality of liquid outlet branch pipes are arranged along the axial direction of the outer pipe.

3. The liquid separation device according to claim 2, wherein The cross-sectional area of the plurality of first through holes gradually decreases from the second end of the liquid inlet pipe to the first end of the liquid inlet pipe.

4. The liquid separation device according to claim 1, wherein The separation component comprises two separation plates which are arranged at intervals and connected between the liquid inlet pipe and the outer pipe, and the distance between the axial end of the separation plate and the inner wall of the outer pipe is greater than zero.

5. The liquid separation device according to claim 4, wherein The two separation plates are symmetrically arranged about the central axis of the liquid inlet pipe.

6. The liquid separation device according to claim 5, wherein The first through holes and the liquid outlet branch pipes are symmetrically arranged about the central axis of the liquid inlet pipe, and the first through holes, the liquid outlet branch pipes and the two separation plates are uniformly distributed in the circumferential direction.

7. The liquid separation device according to any one of claims 1 to 6, wherein The flow uniformization component comprises a plurality of flow uniformization plates which are arranged between the liquid inlet pipe and the outer pipe.

8. The liquid separation device according to claim 7, wherein The flow uniformization plates are arranged between two adjacent first through holes.

9. The liquid separator according to any one of claims 4 to 6, wherein At least one end of the separation plate is connected with a ring plate which is located between the liquid inlet pipe and the outer pipe, and the ring plate is provided with second through holes which are uniformly distributed.

10. An air conditioning system characterized by, The application further relates to a liquid distribution device which comprises an evaporator and the liquid distribution device as claimed in any one of claims 1 to 9, and the liquid outlet branch pipes are connected to the evaporator.

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