Liquid separation device and air conditioning system

Abstract

The utility model relates to the technical field of air conditioners, and provides a liquid separation device and an air conditioning system.The device comprises a liquid separation body and a plurality of liquid outlet branch pipes, a liquid inlet flow channel, a liquid separation cavity and a plurality of liquid separation flow paths are formed in the liquid separation body, the liquid separation flow paths are located on the outer side of the liquid inlet flow channel and evenly distributed, and a liquid inlet is formed in the first end of the liquid inlet flow channel; the liquid separation cavity communicates with the second end of the liquid inlet flow channel and communicates with the multiple liquid separation flow paths; the multiple liquid outlet branch pipes are arranged on the liquid separation body and communicate with the multiple liquid separation flow paths in a one-to-one correspondence mode. The refrigerant enters the liquid separation cavity through the liquid inlet and the liquid inlet flow channel, the wall face of the liquid separation cavity generates a turbulent flow effect on the refrigerant to achieve the mixing effect, the mixed refrigerant is evenly distributed to the multiple liquid separation flow channels, and therefore the refrigerant is evenly distributed into the liquid outlet branch pipes, and the refrigerant mixing effect is achieved. 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 can promote the heat transfer between heat transfer medium and external air, and can realize the heat exchange between two or more different temperature heat transfer medium. 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 CONTENT

[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 distribution body, the liquid distribution body inside is formed with liquid inlet flow channel, liquid distribution cavity and the multiple liquid distribution flow paths of being located at the outside of liquid inlet flow channel and uniform distribution, the first end of liquid inlet flow channel is formed with liquid inlet, the second end of liquid inlet flow channel is communicated with liquid distribution cavity, and liquid distribution cavity is communicated with multiple liquid distribution flow paths;

[0007] Multiple liquid outlet branch pipes are set in the liquid distribution body, and multiple liquid outlet branch pipes are communicated one by one with multiple liquid distribution flow paths.

[0008] According to the utility model provides a kind of liquid distribution device, the liquid distribution body includes:

[0009] Liquid inlet pipe, the first end of liquid inlet pipe is equipped with liquid inlet, the second end of liquid inlet pipe is equipped with liquid outlet, and the liquid inlet flow channel that is communicated liquid inlet and liquid outlet is formed in the inside of liquid inlet pipe;

[0010] Outer tube, the liquid distribution cavity is surrounded between the second end of outer tube and liquid inlet pipe;

[0011] Liquid distribution component is set between liquid inlet pipe and outer tube, and the multiple liquid distribution flow paths are formed between liquid distribution component, outer wall of liquid inlet pipe and inner wall of outer tube.

[0012] According to the liquid separation device, the liquid separation component comprises:

[0013] A plurality of flow guides are connected between the outer wall of the liquid inlet pipe and the inner wall of the outer pipe, and the plurality of flow guides are evenly distributed in the circumferential direction.

[0014] According to the liquid separation device, the flow guide has a flow equalizing portion extending into the liquid separation cavity.

[0015] According to the liquid separation device, the flow guide is in a spiral shape.

[0016] According to the liquid separation device, a plurality of liquid outlet branch pipes are arranged along the outer pipe in the axial direction.

[0017] A plurality of the liquid separation flow paths far from the liquid separation cavity are in one-to-one correspondence with a plurality of the liquid outlet branch pipes.

[0018] According to the liquid separation device, one end of the plurality of flow guides close to the liquid separation cavity is flush, and the length of the plurality of flow guides gradually decreases in the circumferential direction.

[0019] According to the liquid separation device, the liquid inlet pipe has a first pipe section and a second pipe section forming a predetermined angle at the connection with the first pipe section, and the outer pipe is sleeved on the first pipe section.

[0020] According to the liquid separation device, the liquid separation cavity is a semi-spherical liquid separation cavity.

[0021] The utility model also provides a kind of air conditioning system, including evaporimeter and the liquid separation device as described in any one of above, and the liquid outlet branch pipe is connected to the evaporimeter.

[0022] The liquid distribution device provided by the utility model, through the liquid inlet flow channel, the liquid distribution cavity and the multiple liquid distribution flow paths which are formed in the liquid distribution body and are distributed on the outside of the liquid inlet flow channel, the liquid distribution cavity and the multiple liquid distribution flow paths are in one-to-one correspondence and communication, and the multiple liquid outlet branch pipes and the multiple liquid distribution flow paths are in correspondence and communication; in this way, the refrigerant enters the liquid distribution cavity through the liquid inlet and the liquid inlet flow channel, the wall surface of the liquid distribution cavity produces a turbulent effect on the refrigerant to realize mixing, and the mixed refrigerant is evenly distributed to the multiple liquid distribution flow paths, so that the refrigerant is evenly distributed to the multiple liquid outlet branch pipes, and the uneven distribution of the refrigerant in the multiple flow paths of the heat exchanger can be effectively improved, and the heat exchange performance of the heat exchanger is improved. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical scheme in the utility model or the prior art, the following will briefly introduce 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 for those skilled in the art, other drawings can also be obtained without creative labor on the basis of the drawings.

[0024] Figure 1 It is one of the structure schematic views of the liquid distribution device provided by the utility model.

[0025] Figure 2 It is Figure 1 the A-A sectional view structure schematic view of.

[0026] Figure 3 It is the second structure schematic view of the liquid distribution device provided by the utility model.

[0027] Figure 4 It is one of the local structure schematic views of the liquid distribution device provided by the utility model.

[0028] Figure 5 It is the second local structure schematic view of the liquid distribution device provided by the utility model.

[0029] Figure 6 It is the B-B sectional view structure schematic view of Figure 3 .

[0030] Figure 7 It is the C-C sectional view structure schematic view of Figure 3 .

[0031] Figure 8 It is the D-D sectional view structure schematic view of Figure 3 .

[0032] Figure 9 It is the E-E sectional view structure schematic view of Figure 3 .

[0033] Figure 10is a schematic view of a cross-sectional structure of the F-F direction of the liquid distribution body 100. Figure 3 is a schematic view of a cross-sectional structure of the F-F direction of the liquid distribution body 100.

[0034] Figure 11 is a schematic view of a cross-sectional structure of the G-G direction of the liquid distribution body 100. Figure 3 is a schematic view of a cross-sectional structure of the G-G direction of the liquid distribution body 100.

[0035] Reference signs:

[0036] 100, liquid distribution body; 101, liquid inlet channel; 102, liquid distribution cavity; 103, liquid distribution channel; 1031, first liquid distribution channel; 1032, second liquid distribution channel; 1033, third liquid distribution channel; 1034, fourth liquid distribution channel; 1035, fifth liquid distribution channel; 1036, sixth liquid distribution channel;

[0037] 110, liquid inlet pipe; 111, first pipe section; 112, second pipe section;

[0038] 120, outer pipe;

[0039] 130, liquid distribution component; 131, flow guide plate; 1311, flow equalization part; 1312, first flow guide plate; 1313, second flow guide plate; 1314, third flow guide plate; 1315, fourth flow guide plate; 1316, fifth flow guide plate; 1317, sixth flow guide plate;

[0040] 132, closure plate; 1321, first closure plate; 1322, second closure plate; 1323, third closure plate; 1324, fourth closure plate; 1325, fifth closure plate; 1326, sixth closure plate;

[0041] 200, liquid outlet branch pipe; 210, first liquid outlet branch pipe; 220, second liquid outlet branch pipe; 230, third liquid outlet branch pipe; 240, fourth liquid outlet branch pipe; 250, fifth liquid outlet branch pipe; 260, sixth liquid outlet branch pipe. DETAILED DESCRIPTION

[0042] The embodiments of the present application will be further described in detail below with reference to the accompanying 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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 does not necessarily refer to 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.

[0047] The following will be combined Figures 1-11 The utility model discloses a liquid separation device.

[0048] The embodiment of the first aspect of the utility model provides a kind of liquid distribution device, such as Figure 1 And Figure 2 As shown in the figure, the liquid distribution device includes liquid distribution body 100 and multiple liquid outlet branch pipes 200 connected to the liquid distribution body 100.

[0049] Among them, liquid inlet channel 101, distribution cavity 102 and multiple distribution flow paths 103 that are located outside liquid inlet channel 101 and are uniformly distributed are formed inside liquid distribution body 100, the first end of liquid inlet channel 101 is formed with liquid inlet, the second end of liquid inlet channel 101 is communicated with distribution cavity 102, and distribution cavity 102 is communicated with multiple distribution flow paths 103;Multiple liquid outlet branch pipes 200 are arranged in liquid distribution body 100, and multiple liquid outlet branch pipes 200 are communicated one by one with multiple distribution flow paths 103.

[0050] It can be understood that the first end of liquid inlet channel 101 is formed with liquid inlet, the second end of liquid inlet channel 101 is formed with liquid outlet, the liquid outlet of liquid inlet channel 101 is communicated with distribution cavity 102, distribution cavity 102 is communicated with multiple distribution flow paths 103, and each distribution flow path 103 is communicated with a liquid outlet branch pipe 200 corresponding to it;Refrigerant enters liquid inlet channel 101 inside liquid inlet pipe 110 through the liquid inlet of the first end of liquid inlet pipe 110, enters distribution cavity 102 through the liquid outlet of the second end of liquid inlet channel 101, and distribution cavity 102 can distribute the refrigerant discharged from liquid inlet pipe 110 to each direction and produce a large turbulent effect on the refrigerant in the impact process, so as to realize good uniform mixing of the refrigerant, and the mixed refrigerant is uniformly distributed to multiple distribution flow paths 103, so as to realize uniform distribution of the refrigerant to each liquid outlet branch pipe 200. It should be noted that the refrigerant can be gas-liquid two-phase refrigerant.

[0051] The liquid distribution device provided by the embodiment of the utility model forms liquid inlet channel 101, distribution cavity 102 and multiple distribution flow paths 103 that are located outside liquid inlet channel 101 and are uniformly distributed inside liquid distribution body 100, distribution cavity 102 is communicated one by one with multiple distribution flow paths 103, and multiple liquid outlet branch pipes 200 are communicated with multiple distribution flow paths 103 corresponding to them;In this way, refrigerant enters distribution cavity 102 through liquid inlet, liquid inlet channel 101, the wall surface of distribution cavity 102 produces turbulent effect on the refrigerant to realize good mixing effect, and the mixed refrigerant is uniformly distributed to multiple distribution flow paths 103, so as to realize uniform distribution of the refrigerant to each liquid outlet branch pipe 200, and then the condition that the refrigerant is not evenly distributed into each flow path of heat exchanger can be effectively improved, and the heat exchange performance of heat exchanger is improved.

[0052] In an embodiment of the utility model, as shown in Figure 2As shown, the liquid distribution body 100 comprises a liquid inlet pipe 110, an outer pipe 120 and a liquid distribution component 130; the first end of the liquid inlet pipe 110 is provided with a liquid inlet, the second end of the liquid inlet pipe 110 is provided with a liquid outlet, and the liquid inlet channel 101 is formed inside the liquid inlet pipe 110 and communicates the liquid inlet and the liquid outlet; the outer pipe 120 is sleeved on the liquid inlet pipe 110, and the second end of the liquid inlet pipe 110 is spaced from the end of the outer pipe 120, and the liquid distribution cavity 102 is formed between the outer pipe 120 and the second end of the liquid inlet pipe 110; the liquid distribution component 130 is arranged between the liquid inlet pipe 110 and the outer pipe 120, and a plurality of liquid distribution flow paths 103 are formed between the liquid distribution component 130, the outer wall of the liquid inlet pipe 110 and the inner wall of the outer pipe 120, one end of the liquid distribution flow path 103 communicates with the liquid distribution cavity 102, and the other end of the liquid distribution flow path 103 communicates with the liquid outlet branch pipe 200.

[0053] For example, the liquid distribution cavity 102 is a semispherical liquid distribution cavity. Specifically, the second end of the outer pipe 120 is semispherical, so that the semispherical liquid distribution cavity is formed between the second end of the liquid inlet pipe 110 and the outer pipe 120.

[0054] It can be understood that the semispherical liquid distribution cavity can uniformly distribute the refrigerant in the liquid inlet pipe 110 to the semispherical wall surface in all directions, and generate a large turbulent effect on the gas-liquid two-phase flow during the impact process, so as to realize good mixing effect and facilitate to enhance the heat exchange effect of the heat exchanger.

[0055] It should be noted that the conventional liquid distribution device controls the flow distribution of the heat exchanger by combining the liquid distributor with the capillary tube, but the flow distribution processing cost is high, and the capillary tube has a long experimental period for distribution adjustment, so that the heat exchange efficiency is low. The liquid distribution body 100 formed by the liquid inlet pipe 110, the outer pipe 120 and the liquid distribution component 130 is used to realize the flow distribution in the present application, compared with the capillary tube, the structure of the liquid distribution device of the present application is simpler, so that the processing cost and the adjustment period are reduced, and the uniform distribution of the refrigerant in each flow path of the heat exchanger can be ensured, so that all heat exchange regions can work effectively, and overheating or overcooling of some parts can be avoided, so that the heat exchange efficiency is improved, and the performance and reliability of the entire air conditioning system are improved.

[0056] Optionally, as shown in Figure 2 , Figure 4 and Figure 5 , the liquid distribution component 130 comprises a plurality of flow guide plates 131, the flow guide plates 131 are connected between the outer wall of the liquid inlet pipe 110 and the inner wall of the outer pipe 120, the plurality of flow guide plates 131 are uniformly distributed in the circumferential direction, the liquid distribution flow path 103 is formed between the adjacent two flow guide plates 131, the outer wall of the liquid inlet pipe 110 and the inner wall of the outer pipe 120, and the end of the liquid distribution flow path 103 away from the liquid distribution cavity 102 is provided with a closing plate 132.

[0057] Specifically, the outer tube 120 is coaxially sleeved on the liquid inlet pipe 110, and a distance is formed between the second end of the liquid inlet pipe 110 and the end of the outer tube 120. The outer tube 120 and the second end of the liquid inlet pipe 110 form the distribution cavity 102, and the outer wall of the liquid inlet pipe 110 and the inner wall of the outer tube 120 form an annular cavity. A gap is formed between the outer wall of the second end of the liquid inlet pipe 110 and the inner wall of the outer tube 120, one end of the flow guide plate 131 is arranged in the gap, and the other end of the flow guide plate 131 is arranged between the outer wall of the liquid inlet pipe 110 and the inner wall of the outer tube 120. The plurality of flow guide plates 131 are distributed in the circumferential direction, so that the plurality of flow guide plates 131 divide the annular cavity into a plurality of fan-shaped areas distributed in the circumferential direction, and each fan-shaped area corresponds to a distribution flow path 103. One end of the distribution flow path 103 is communicated with the distribution cavity 102, and the other end of the distribution flow path 103 is provided with a sealing plate 132, and the other end of the distribution flow path 103 is communicated with the corresponding liquid outlet branch pipe 200.

[0058] Further, one end of the flow guide plate 131 extends into the distribution cavity 102, so that the flow guide plate 131 has a flow uniformizing portion 1311 extending into the distribution cavity 102. Specifically, the flow uniformizing portion 1311 is arranged on the inner wall of the distribution cavity 102, and the flow uniformizing portion 1311 is in the shape of a circular arc matched with the inner wall of the distribution cavity 102.

[0059] It can be understood that the flow guide plate 131 includes two parts, one part is located in the distribution cavity 102 to realize uniform distribution of the refrigerant in the distribution cavity 102, and the other part is located in the inner cavity of the outer tube 120 to divide the annular cavity between the outer tube 120 and the liquid inlet pipe 110 into different distribution flow paths 103 and to ensure that the refrigerant after uniform distribution does not affect each other in the distribution flow paths 103.

[0060] In the embodiment, the plurality of flow guide plates 131 divide the space between the liquid inlet pipe 110 and the outer tube 120 into a plurality of distribution flow paths 103, and the flow guide plates 131 are arranged in a spiral shape outside the liquid inlet pipe 110 to improve the turbulent effect on the refrigerant.

[0061] In an embodiment of the utility model, the plurality of liquid outlet branch pipes 200 are arranged axially and spaced apart along the outer tube 120; the ends of the plurality of distribution flow paths 103 away from the distribution cavity 102 correspond one-to-one to the plurality of liquid outlet branch pipes 200, so that the bottoms of the distribution flow paths 103 correspond to the positions of the plurality of liquid outlet branch pipes 200.

[0062] For example, the outer tube 120 is arranged in the vertical direction, the plurality of liquid outlet branch pipes 200 are arranged axially and spaced apart along the outer tube 120, and then the plurality of liquid outlet branch pipes 200 are arranged in the vertical direction, and the heights of the bottoms of the plurality of distribution flow paths 103 correspond to the heights of the positions of the plurality of liquid outlet branch pipes 200.

[0063] It can be understood that the position heights of the plurality of liquid outlet branch pipes 200 decrease from top to bottom in turn, and the paths of the plurality of liquid distribution flow paths 103 gradually increase. It should be noted that the longer the path of the plurality of liquid distribution flow paths 103, the greater the pressure loss (pressure drop), which reduces the influence of gravity on uneven distribution of liquid, thereby enhancing the uniformity of liquid distribution.

[0064] Optionally, the plurality of flow guide plates 131 are flush at one end close to the liquid distribution cavity 102, and the lengths of the plurality of flow guide plates 131 decrease in turn in the circumferential direction, so as to divide the space between the outer pipe 120 and the gas inlet pipe into liquid distribution flow paths 103 of different lengths according to the heights of the liquid outlet branch pipes 200, and to ensure that the refrigerant is evenly distributed and does not affect each other in the liquid distribution flow paths 103; wherein the liquid outlet branch pipe 200 closest to the liquid distribution cavity 102 is connected to the liquid distribution flow path 103 between the longest flow guide plate 131 and the shortest flow guide plate 131; and the remaining liquid distribution flow paths 103 are connected to the corresponding liquid outlet branch pipes 200 through the liquid outlet flow channels.

[0065] As shown in Figure 2 , the liquid distribution body 100 includes a liquid inlet pipe 110, an outer pipe 120, and a liquid distribution component 130; the outer pipe 120 is coaxially sleeved on the upper part of the liquid inlet pipe 110, the outer pipe 120 is arranged in the vertical direction, the upper end of the outer wall of the liquid inlet pipe 110 is connected with a ring plate extending in the radial direction, and there is a gap between the ring plate and the inner wall of the outer pipe 120, and the top end of the outer pipe 120 and the upper end of the liquid inlet pipe 110 form a hemispherical liquid distribution cavity 102; the outer pipe 120 is arranged with six liquid outlet branch pipes 200, and the liquid distribution component 130 includes six circumferentially distributed flow guide plates 131, part of the flow guide plates 131 is located in the liquid distribution cavity 102, and the other part is located between the outer wall of the liquid inlet pipe 110 and the inner wall of the outer pipe 120; wherein the adjacent two flow guide plates 131 are connected between the parts of the gap to form a flow guide opening, under the action of the flow guide plates 131 in the liquid distribution cavity 102, the mixed gas-liquid two-phase refrigerant in the liquid distribution cavity 102 is evenly divided into six equal parts, and enters the six liquid distribution flow paths 103 through the flow guide opening.

[0066] As shown in Figures 3 to 11 , the six liquid outlet branch pipes are respectively a first liquid outlet branch pipe 210, a second liquid outlet branch pipe 220, a third liquid outlet branch pipe 230, a fourth liquid outlet branch pipe 240, a fifth liquid outlet branch pipe 250, and a sixth liquid outlet branch pipe 260 arranged in turn from top to bottom.

[0067] The six guide plates are a first guide plate 1312, a second guide plate 1313, a third guide plate 1314, a fourth guide plate 1315, a fifth guide plate 1316 and a sixth guide plate 1317 arranged in the circumferential direction in sequence; the first guide plate 1312 and the sixth guide plate 1317 form a first liquid distribution flow path 1031, the first guide plate 1312 and the second guide plate 1313 form a second liquid distribution flow path 1032, the second guide plate 1313 and the third guide plate 1314 form a third liquid distribution flow path 1033, the third guide plate 1314 and the fourth guide plate 1315 form a fourth liquid distribution flow path 1034, the fourth guide plate 1315 and the fifth guide plate 1316 form a fifth liquid distribution flow path 1035, and the fifth guide plate 1316 and the sixth guide plate 1317 form a sixth liquid distribution flow path 1036; wherein the lengths of the first guide plate 1312, the second guide plate 1313, the third guide plate 1314, the fourth guide plate 1315, the fifth guide plate 1316 and the sixth guide plate 1317 increase in sequence, and the lengths of the first liquid distribution flow path 1031, the second liquid distribution flow path 1032, the third liquid distribution flow path 1033, the fourth liquid distribution flow path 1034, the fifth liquid distribution flow path 1035 and the sixth liquid distribution flow path 1036 increase in sequence, and the bottoms of the first liquid distribution flow path 1031, the second liquid distribution flow path 1032, the third liquid distribution flow path 1033, the fourth liquid distribution flow path 1034, the fifth liquid distribution flow path 1035 and the sixth liquid distribution flow path 1036 correspond to the bottoms of the first guide plate 1312, the second guide plate 1313, the third guide plate 1314, the fourth guide plate 1315, the fifth guide plate 1316 and the sixth guide plate 1317 in sequence.

[0068] As shown in Figure 3 , Figure 5 and Figure 6 , the bottom of the first liquid distribution flow path 1031 is provided with a first closing plate 1321, that is, the first closing plate 1321 is a first fan-shaped plate arranged between the outer wall of the liquid inlet pipe 110 and the inner wall of the outer pipe 120, and the first fan-shaped plate is connected between the sixth guide plate 1317 and the first guide plate 1312.

[0069] As shown in Figure 3 , Figures 5 to 7 , the bottom of the second liquid distribution flow path 1032 is provided with a second closing plate 1322, since the second liquid distribution flow path 1032 has a distance from the second liquid outlet branch pipe 220 in the circumferential direction, the second closing plate 1322 is a second fan-shaped plate arranged between the outer wall of the liquid inlet pipe 110 and the inner wall of the outer pipe 120, and the second fan-shaped plate is connected between the sixth guide plate 1317 and the second guide plate 1313, and the second fan-shaped plate and the first fan-shaped plate form a first liquid outlet flow channel connecting the bottom of the second liquid distribution flow path 1032 and the second liquid outlet branch pipe 220.

[0070] AsFigure 3 、 Figure 5 、 Figure 6 、 Figure 8 As shown in FIG. 13, the bottom of the third liquid distribution flow path 1033 is provided with a third closure plate 1323, which is a third sector plate arranged between the outer wall of the liquid inlet pipe 110 and the inner wall of the outer pipe 120, and is connected between the sixth flow guide plate 1317 and the third flow guide plate 1314. The third sector plate and the second sector plate form a second liquid outlet flow channel that connects the bottom of the third liquid distribution flow path 1033 and the third liquid outlet branch pipe 230.

[0071] As shown in FIG. 13, Figure 3 、 Figure 5 、 Figure 6 、 Figure 9 As shown in FIG. 13, the bottom of the fourth liquid distribution flow path 1034 is provided with a fourth closure plate 1324, which is a fourth sector plate arranged between the outer wall of the liquid inlet pipe 110 and the inner wall of the outer pipe 120, and is connected between the sixth flow guide plate 1317 and the fourth flow guide plate 1315. The fourth sector plate and the third sector plate form a third liquid outlet flow channel that connects the bottom of the fourth liquid distribution flow path 1034 and the fourth liquid outlet branch pipe 240.

[0072] As shown in FIG. 13, Figure 3 、 Figure 5 、 Figure 6 、 Figure 10 As shown in FIG. 13, the bottom of the fifth liquid distribution flow path 1035 is provided with a fifth closure plate 1325, which is a fifth sector plate arranged between the outer wall of the liquid inlet pipe 110 and the inner wall of the outer pipe 120, and is connected between the sixth flow guide plate 1317 and the fifth flow guide plate 1316. The fifth sector plate and the fourth sector plate form a fourth liquid outlet flow channel that connects the bottom of the fifth liquid distribution flow path 1035 and the fifth liquid outlet branch pipe 250.

[0073] As shown in FIG. 13, Figure 3 、 Figure 5 、 Figure 6 、 Figure 11 As shown in FIG. 13, the bottom of the sixth liquid distribution flow path 1036 is provided with a sixth closure plate 1326, which is a ring-shaped plate arranged between the outer wall of the liquid inlet pipe 110 and the inner wall of the outer pipe 120. The ring-shaped plate and the fifth sector plate form a fifth liquid outlet flow channel that connects the bottom of the sixth liquid distribution flow path 1036 and the sixth liquid outlet branch pipe 260.

[0074] In other embodiments, the number of liquid outlet branch pipes 200 on the outer pipe 120 can also be other numbers, such as three, five, seven, etc., and the number of liquid outlet branch pipes 200 can correspond to the number of heat exchange pipes of the evaporator; the number and length of the flow guide plates 131 correspond to the number and position of the liquid outlet branch pipes 200, and the number, structure shape and position of the closing plates 132 correspond to the flow guide plates 131.

[0075] In an embodiment of the present application, as shown in Figure 2 The liquid inlet pipe 110 has a first pipe section 111 and a second pipe section 112 forming a predetermined angle at the connection with the first pipe section 111, and the outer pipe 120 is sleeved on the second pipe section 112.

[0076] Optionally, the liquid inlet pipe 110 is made of red copper material, and of course, the liquid inlet pipe 110 can also be made of brass or other suitable materials.

[0077] For example, the first pipe section 111 and the second pipe section 112 have the same pipe diameter, so that the refrigerant has a small resistance when flowing in the liquid inlet pipe 110. The first pipe section 111 includes a straight pipe portion and a bent pipe portion, the straight pipe portion extends in the vertical direction, the straight pipe portion is a substantially cylindrical hollow pipe and has a first center line, and the bent pipe portion is configured to respectively connect with the straight pipe portion and the second pipe section 112. The intersection of the bent pipe portion and the second pipe section 112 is the connection between the first pipe section 111 and the second pipe section 112. The second pipe section 112 is also a substantially cylindrical hollow pipe and has a second center line. The first pipe section 111 and the second pipe section 112 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 center line of the straight pipe portion and the second center line of the second pipe section 112, and the range of the predetermined angle is 60°-120°. Preferably, the predetermined angle is 90°.

[0078] It can be understood that in order to uniformly distribute the refrigerant into each coil of the heat exchanger, the liquid distribution device needs to be installed in the substantially vertical direction to ensure that the liquid refrigerant flowing out of each liquid outlet branch pipe 200 can flow into the heat exchanger in the substantially horizontal direction, thereby avoiding uneven distribution of the refrigerant due to the influence of gravity. In actual pipe arrangement, if the liquid inlet pipe 110 is configured as a straight pipe, it can only be arranged in the vertical direction, which is not conducive to the pipe connection of the liquid distribution device and other components (such as the expansion valve). Therefore, by configuring the first pipe section 111 and the second pipe section 112 to be clamped at a predetermined angle, the liquid distribution device can be installed in the substantially vertical direction, and the pipe arrangement can also be facilitated.

[0079] An embodiment of the second aspect of the present application provides an air conditioning system, which comprises an evaporator and the liquid distribution device provided by any of the above embodiments, and the liquid outlet branch pipe 200 is connected to the 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 located near an 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 110 is connected to the outlet of the electronic expansion valve, and the plurality of liquid outlet branch pipes 200 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 and then flow into each branch of the evaporator. It should be noted that the liquid distribution device itself does not participate in heat exchange and has no requirements on the type of refrigerant, i.e., the refrigerant currently used in the air conditioning system can be used in the system of the embodiment.

[0082] It can be understood that the gas-liquid two-phase refrigerant output from the outlet of the expansion valve first enters the liquid inlet flow channel 101 inside the liquid inlet pipe 110 through the liquid inlet, and then enters the liquid distribution cavity 102 through the liquid outlet of the liquid inlet pipe 110, and then is uniformly distributed under the action of the liquid distribution cavity 102, and then is uniformly introduced into each liquid distribution flow path 103 through the flow guide plate 131, the end of each liquid distribution flow path 103 is correspondingly connected to the liquid outlet branch pipe 200, and finally the refrigerant flows into the heat exchanger under the action of pressure. Among them, the longer the refrigerant path of the lower liquid distribution flow path 103, the greater the pressure drop, and the influence of gravity on uneven distribution is reduced.

[0083] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application 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 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 application.

Claims

1. A liquid separation device, characterized by, The application relates to a liquid distribution device. The liquid distribution device comprises: a liquid distribution body, which is internally formed with a liquid inlet channel, a liquid distribution cavity and a plurality of liquid distribution channels which are uniformly distributed outside the liquid inlet channel, a first end of the liquid inlet channel is formed with a liquid inlet port, the liquid distribution cavity is communicated with a second end of the liquid inlet channel, and the liquid distribution cavity is communicated with the plurality of liquid distribution channels; 2. The liquid separation device according to claim 1, wherein a plurality of liquid outlet branches which are arranged in the liquid distribution body and are communicated with the plurality of liquid distribution channels one by one. The liquid distribution body comprises: a liquid inlet pipe, a first end of the liquid inlet pipe is provided with the liquid inlet port, and a second end of the liquid inlet pipe is provided with a liquid outlet port, and the liquid inlet pipe is internally formed with the liquid inlet channel which is communicated with the liquid inlet port and the liquid outlet port; an outer pipe which is sleeved on the liquid inlet pipe, and the liquid distribution cavity is formed between the outer pipe and the second end of the liquid inlet pipe; 3. The liquid separation device according to claim 2, wherein a liquid distribution component which is arranged between the liquid inlet pipe and the outer pipe, and the plurality of liquid distribution channels are formed between the liquid distribution component, the outer wall of the liquid inlet pipe and the inner wall of the outer pipe. The liquid distribution component comprises:

4. The liquid separation device according to claim 3, wherein a plurality of flow guide plates which are connected between the outer wall of the liquid inlet pipe and the inner wall of the outer pipe, the plurality of flow guide plates are uniformly distributed in the circumferential direction, and the liquid distribution channel is formed between two adjacent flow guide plates, the outer wall of the liquid inlet pipe and the inner wall of the outer pipe, and the end of the liquid distribution channel which is far away from the liquid distribution cavity is provided with a closing plate.

5. The liquid separation device according to claim 3, wherein The flow guide plate has a flow uniformizing part which extends into the liquid distribution cavity.

6. The liquid separation device according to claim 3, wherein The flow guide plate is in a spiral shape. The plurality of liquid outlet branches are arranged in the axial direction of the outer pipe; 7. The liquid separation device according to claim 6, wherein the end of the plurality of liquid distribution channels which is far away from the liquid distribution cavity corresponds to the plurality of liquid outlet branches one by one.

8. The liquid separator according to any one of claims 2 to 7, wherein The ends of the plurality of flow guide plates which are close to the liquid distribution cavity are flush, the lengths of the plurality of flow guide plates are sequentially reduced in the circumferential direction, the liquid outlet branch which is closest to the liquid distribution cavity is communicated with the liquid distribution channel between the longest flow guide plate and the shortest flow guide plate, and the rest of the liquid distribution channels are communicated with the corresponding liquid outlet branches through liquid outlet channels.

9. The liquid separation device according to any one of claims 1 to 7, wherein The liquid inlet pipe has a first pipe section and a second pipe section which is formed with a predetermined angle at the connection position of the first pipe section, and the outer pipe is sleeved on the first pipe section.

10. An air conditioning system characterized by, The liquid distribution cavity is a semispherical liquid distribution cavity. 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 is connected to the evaporator.

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