Distributor, heat exchanger and air conditioner

Abstract

The utility model discloses a distributor, a heat exchanger and an air conditioner, and relates to the technical field of air conditioners, the distributor comprises a distribution piece, a first connecting pipe group and a second connecting pipe group; a first flow channel and a second flow channel are formed in the distribution piece, one end of the first connecting pipe set is connected with the first flow channel, the other end of the first connecting pipe set is used for being connected with a heat exchanger body, one end of the second connecting pipe set is connected with the second flow channel, and the other end of the second connecting pipe set is used for being connected with the heat exchanger body. The other end of the second connecting pipe set is used for being connected with the heat exchanger body, and the flow mixing piece is used for conducting gas-liquid mixing on refrigerants flowing to the first connecting pipe set from the first flow channel or conducting gas-liquid mixing on refrigerants flowing to the second connecting pipe set from the second flow channel. According to the utility model, the space size occupation of the distributor can be effectively reduced, the situation that the original distribution structure occupies a complex space is avoided, and the situation that the manufacturing process is difficult and the production efficiency is low due to the original complex copper pipe structure is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to air conditioning technical field, especially a distributor, heat exchanger and air conditioner. BACKGROUND

[0002] The distributor is used for the two-phase flow under the condition of multiple flow paths in the existing air conditioner, and the length of the copper pipe in the distributor assembly is adjusted to ensure that the refrigerant amount of each outlet can be uniform. Meanwhile, the flute-shaped pipe and the output pipe jointly constitute the flow path structure of the condenser.

[0003] The original copper pipe structure causes a sharp rise in cost in the model with more flow paths, including the rise in material cost and manual welding cost, which restricts the cost advantage of the small pipe diameter condenser. The complex copper structure usually causes the size of the space in the region to rise, resulting in the rise in the size of the whole box body. Moreover, the complex copper pipe causes the rise in the difficulty of production and manufacturing, which is a process difficulty in the application process of the small pipe diameter condenser. SUMMARY

[0004] The main purpose of the utility model is to provide a distributor, heat exchanger and air conditioner, which aims to reduce the space size occupied by the distribution part and simplify the structure of the distribution part.

[0005] To achieve the above purpose, the distributor provided by the utility model is used for the heat exchanger of the air conditioner and comprises the following.

[0006] The distribution part is internally provided with a first flow channel and a second flow channel.

[0007] The first connecting pipe group is connected to the first flow channel at one end and connected to the heat exchanger body at the other end.

[0008] The second connecting pipe group is connected to the second flow channel at one end and connected to the heat exchanger body at the other end.

[0009] The mixed flow part is arranged in the distribution part and used for mixing the gas and liquid of the refrigerant flowing from the first flow channel to the first connecting pipe group or mixing the gas and liquid of the refrigerant flowing from the second flow channel to the second connecting pipe group.

[0010] In an embodiment, the first flow channel is provided with an installation channel section; and / or, the second flow channel is provided with an installation channel section.

[0011] The installation channel section is provided with the mixed flow part, the circumferential side of the mixed flow part is in sealing cooperation with the circumferential wall of the installation channel section, the mixed flow part comprises a mixed flow plate arranged radially along the installation channel section, and the mixed flow plate is provided with a plurality of mixed flow holes.

[0012] In an embodiment, the plurality of mixing holes are uniformly distributed on the mixing plate.

[0013] In an embodiment, a sum of hole area of the plurality of mixing holes is defined as S1, a cross-sectional area of the installation channel section is defined as S2, and a ratio of the S1 to the S2 is not greater than 0.05.

[0014] In an embodiment, the mixing member further comprises a ring wall, the ring wall is arranged on a side of the mixing plate and extends along a length direction of the installation channel section, and the ring wall is sealingly matched with a peripheral wall of the installation channel section.

[0015] In an embodiment, the distribution member comprises a first plate member and a second plate member, the first plate member is concavely provided with a first flow channel groove and a second flow channel groove, and the second plate member is concavely provided with a third flow channel groove and a fourth flow channel groove.

[0016] The first plate member is engaged with the second plate member, so that the first flow channel groove and the third flow channel groove are spliced to form the first flow channel, and the second flow channel groove and the fourth flow channel groove are spliced to form the second flow channel.

[0017] In an embodiment, the first plate member, the second plate member and the mixing member are made of stainless steel.

[0018] And / or, the first connecting pipe group and the second connecting pipe group are made of copper.

[0019] In an embodiment, the first plate member and the second plate member are welded together.

[0020] And / or, the ring wall and the inner wall of the installation channel section are welded together.

[0021] In an embodiment, the distribution member further comprises a supercooling flow channel, the supercooling flow channel is used for inputting refrigerant into a supercooler.

[0022] In an embodiment, the first connecting pipe group is provided with a plurality of first connecting pipes, and the plurality of first connecting pipes are spaced apart along a length direction of the first flow channel.

[0023] And / or, the second connecting pipe group is provided with a plurality of second connecting pipes, and the plurality of second connecting pipes are spaced apart along a length direction of the second flow channel.

[0024] The utility model further provides a heat exchanger, including heat exchanger body and as the above-mentioned distributor.

[0025] The utility model further provides an air conditioner, including as the above-mentioned distributor or including as the above-mentioned heat exchanger.

[0026] The technical solution of this utility model is to set up a distribution component, in which two sets of flow paths for diversion and convergence of the distributor are respectively set on the distribution component, and at the same time, a mixing component is set on the distribution component. This allows the entire diversion, convergence and refrigerant mixing of the distributor to be integrated on the distribution component. The distribution component only needs to be connected to the heat exchanger body through the first connecting pipe group and the second connecting pipe group. This can effectively reduce the space occupied by the distributor, avoid the situation of the original distribution structure being complex and space-consuming, and avoid the situation of the original complex copper pipe structure leading to difficult manufacturing process and low production efficiency. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0028] Figure 1 A schematic diagram of a heat exchanger embodiment provided by this utility model;

[0029] Figure 2 A schematic diagram of the structure of an embodiment of the dispenser provided by this utility model;

[0030] Figure 3 for Figure 2 Another angle view of the distributor;

[0031] Figure 4 for Figure 2 Exploded view of the angled structure of the central distributor;

[0032] Figure 5 for Figure 2 Another angle of the exploded view of the middle distributor;

[0033] Figure 6 for Figure 3 A schematic diagram of the structure of an embodiment of the mixing component.

[0034] Explanation of icon numbers:

[0035] 100. Distributor; 10. Distributor component; 101. First flow channel; 102. Second flow channel; 103. Mounting channel section; 104. Second flow channel inlet; 105. Subcooling flow channel; 106. Fourth flow channel inlet; 107. First flow channel inlet; 108. Third flow channel inlet; 11. First plate; 111. First flow channel groove; 112. Second flow channel groove; 12. Second plate; 121. Third flow channel groove; 122. Fourth flow channel groove; 20. First connecting pipe assembly; 21. First connecting pipe; 30. Second connecting pipe assembly; 31. Second connecting pipe; 40. Mixing component; 41. Mixing plate; 411. Mixing hole; 42. Annular wall; 50. Subcooling inlet pipe;

[0036] 200. Heat exchanger body.

[0037] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0039] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0040] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0041] Existing air conditioners use distributors to split two-phase flows in multi-flow-path situations. By adjusting the length of the copper pipes in the distributor assembly, the refrigerant volume at each branch outlet is ensured to be uniform. Together with the flute tubes and output pipes, they form the flow path structure of the condenser.

[0042] The original copper tube structure causes a sharp increase in cost in models with many flow paths, including increased material costs and manual welding costs. This restricts the cost advantage brought by the reduction of condenser tube diameter. The complex copper structure usually increases the size of the space in that area, resulting in an increase in the overall size of the housing. Furthermore, the complex copper tubes lead to increased manufacturing difficulty and reduced efficiency, which is a technological challenge in the application of small-diameter condensers.

[0043] This utility model proposes a distributor 100.

[0044] Please see Figures 1 to 6 In one embodiment of the present invention, the distributor 100 includes a distribution component 10, a first connecting pipe assembly 20, and a second connecting pipe assembly 30. The distribution component 10 has a first flow channel 101 and a second flow channel 102. One end of the first connecting pipe assembly 20 is connected to the first flow channel 101, and the other end of the first connecting pipe assembly 20 is used to connect to the heat exchanger body 200. One end of the second connecting pipe assembly 30 is connected to the second flow channel 102, and the other end of the second connecting pipe assembly 30 is used to connect to the heat exchanger body 200. The mixing component 40 is used to perform gas-liquid mixing of the refrigerant flowing from the first flow channel 101 to the first connecting pipe assembly 20, or to perform gas-liquid mixing of the refrigerant flowing from the second flow channel 102 to the second connecting pipe assembly 30.

[0045] The mixing element 40 is used to atomize and mix the refrigerant in a gas-liquid two-phase state, so that the refrigerant flowing towards the heat exchanger body 200 can be uniformly mixed, thereby helping the refrigerant and the heat exchanger body 200 to achieve more uniform heat exchange and improve heat exchange efficiency. The mixing element 40 can be set in the first flow channel 101, the second flow channel 102, or both the first flow channel 101 and the second flow channel 102 can be equipped with the mixing element 40.

[0046] The distributor 100 of this utility model can be applied to the heat exchanger of an air conditioner. In one example, the heat exchanger includes a heat exchanger body 200, which has multiple heat exchange pipes. Each heat exchange pipe has a first port and a second port, and the first port and the second port are interconnected. The first connecting pipe group 20 may include multiple first connecting pipes 21, which are spaced apart along the length of the first flow channel 101. The second connecting pipe group 30 may include multiple second connecting pipes 31, which are spaced apart along the length of the second flow channel 102. It can be understood that, in order to ensure heat exchange efficiency, the heat exchanger body 200 generally has multiple heat exchange pipes, each with a first port and a second port. Therefore, it is necessary to provide multiple first connecting pipes 21 to connect to multiple first ports, and multiple second connecting pipes 31 to connect to multiple second ports. Depending on the change in the flow direction of the refrigerant in the heat exchanger pipes of the heat exchanger body 200 under the cooling and heating states of the air conditioner, the first connecting pipe group 20 can correspond to the inflow end of the heat exchanger body 200, and the second connecting pipe group 30 can correspond to the outflow end of the air conditioner; or, the first connecting pipe group 20 can correspond to the outflow end of the heat exchanger body 200, and the second connecting pipe group can correspond to the inflow end of the heat exchanger body 200, without making specific limitations here.

[0047] When the heat exchanger is the outdoor heat exchanger of an air conditioner, the first flow channel 101 can be connected to the indoor heat exchanger of the air conditioner, and the second flow channel 102 can be connected to the compressor of the air conditioner. In the cooling state, the high-temperature refrigerant flows from the compressor to the second flow channel 102, is mixed and distributed by the mixing element 40 in the second flow channel 102, and then flows to multiple second connecting pipes 31. After flowing through the second connecting pipes 31, it flows to the heat exchanger body 200 for condensation and heat release, and then merges again through the multiple first connecting pipes 21. The refrigerant flows into the first flow channel 101 and then into the indoor heat exchanger. In heating mode, the low-temperature refrigerant flows out of the indoor heat exchanger and into the first flow channel 101. After being mixed and distributed by the mixing element 40 within the first flow channel 101, it is distributed to multiple first connecting pipes 21. From there, it flows to the heat exchanger body 200, where it evaporates and absorbs heat. Finally, it flows through multiple second connecting pipes 31 and into the second flow channel 102, eventually flowing into the compressor. Of course, the distributor 100 of this invention can also be used in the indoor heat exchanger of an air conditioner to achieve the distribution of refrigerant flowing into and out of the indoor heat exchanger; no specific limitation is made.

[0048] In this invention, the distributor 10 can be a plate-like structure. A first flow channel 101 and a second flow channel 102 can be formed within the distributor 10 by stamping. The distributor 10 also has a first flow channel opening 107 and multiple second flow channel openings 104. The first flow channel opening 107 can be located at one end of the first flow channel 101, and the multiple second flow channel openings 104 can be spaced apart along the length of the first flow channel 101. Both the first flow channel opening 107 and the second flow channel openings 104 are connected to the first flow channel 101. The mixing component 40 can be disposed within the first flow channel 101 and located between the first flow channel opening 107 and the second flow channel openings 104. Multiple first connecting pipes 21 of the first connecting pipe assembly 20 can be inserted in pairs. Multiple second flow channels 104 are connected by welding. In addition, the distribution component 10 is also provided with a third flow channel 108 and multiple fourth flow channels 106. The third flow channel 108 can be set at one end of the second flow channel 102. The multiple fourth flow channels 106 are distributed at intervals along the length of the second flow channel 102. The third flow channel 108 and the fourth flow channel 106 are all connected to the second flow channel 102. The mixing component 40 can be set in the second flow channel 102 and located between the third flow channel 108 and the fourth flow channel 106. Multiple second connecting pipes 31 of the second connecting pipe group 30 can be inserted into the multiple fourth flow channels 106 in pairs and connected by welding.

[0049] The technical solution of this utility model is to set up a distribution component 10, on which the two sets of flow paths of the distributor 100 for diversion and convergence are respectively set. At the same time, the mixing component 40 is set on the distribution component 10, so that the entire diversion, convergence and refrigerant mixing work of the distributor 100 can be integrated on the distribution component 10. The distribution component only needs to be connected to the heat exchanger body 200 through the first connecting pipe group 20 and the second connecting pipe group 30. This can effectively reduce the size of the distribution component 10, avoid the situation of the original distribution structure being complex and occupying space, and avoid the situation of the original complex copper pipe structure leading to high manufacturing difficulty and low production efficiency.

[0050] It is understandable that during heating, the first flow channel 101 is used for flow splitting, and the second flow channel 102 is used for flow convergence; during cooling, the second flow channel 102 is used for flow splitting, and the first flow channel 101 is used for flow convergence. Therefore, both the first flow channel 101 and the second flow channel 102 can have the function of flow splitting during actual operation of the air conditioner. Thus, when the air conditioner has a single cooling function and the distributor 100 is applied to the outdoor heat exchanger, a mixing element 40 can be provided in the second flow channel 102 to uniformly mix the gas and liquid refrigerant flowing to the heat exchanger. When the air conditioner has both cooling and heating functions and the distributor 100 is applied to the outdoor heat exchanger, a mixing element 40 can be provided in both the first flow channel 101 and the second flow channel 102 to uniformly mix the gas and liquid refrigerant flowing to the heat exchanger. The relevant settings are as follows (see reference). Figure 2 , Figure 4As shown, in one embodiment, the first flow channel 101 is provided with an installation channel section 103; and / or, the second flow channel 102 is provided with an installation channel section 103;

[0051] The installation channel section 103 is provided with the mixing element 40. The periphery of the mixing element 40 is sealed to the periphery of the installation channel section 103. The mixing element 40 includes a mixing plate 41 arranged radially along the installation channel section 103. The mixing plate 41 has a plurality of mixing holes 411 through it.

[0052] The cross-sectional dimensions of the installation channel section 103 can be adapted to the outer circumferential dimensions of the mixing element 40, so that when the mixing element 40 is assembled to the first flow channel 101 and / or the second flow channel 102, it can be accurately positioned through the installation channel section 103. At the same time, it can be sealed with the inner circumferential wall of the installation channel section 103, so that the refrigerant flowing from the installation channel section 103 to the heat exchanger body 200 can be completely mixed through the mixing element 40, making the gas-liquid two-phase refrigerant more uniformly mixed after mixing.

[0053] It is understandable that the length of the installation channel section 103 is set according to the size of the mixing element 40. Therefore, when the installation channel section 103 is set in the first flow channel 101, the cross-section of the installation channel section 103 can be larger than the cross-section of the first flow channel 101, smaller than the cross-section of the first flow channel 101, or equal to the cross-section of the first flow channel 101, depending on the size of the mixing element 40. No limitation is made here. The same applies when the installation channel section 103 is set in the second flow channel 102.

[0054] Furthermore, multiple mixing holes 411 can be evenly distributed on the mixing plate 41, so that when the refrigerant flows out through the mixing plate 41, the uniformity of the refrigerant mixture in the gas-liquid two-phase state can be further improved.

[0055] Optionally, the sum of the aperture areas of the plurality of mixing holes 411 is defined as S1, and the cross-sectional area of ​​the mounting channel section 103 is defined as S2, wherein the ratio of S1 to S2 is not greater than 0.05.

[0056] This configuration ensures that the ratio of the sum of the aperture areas of the mixing holes 411 to the cross-sectional area of ​​the installation channel section 103 is not too large, preventing poor uniformity of the refrigerant flowing out through the mixing element 40. Tests have shown that when the sum of the aperture areas of the multiple mixing holes 411 accounts for less than 5% of the cross-sectional area of ​​the installation channel section 103, the variance of the refrigerant output through the mixing element 40 tends to converge and stabilize, and the ratio of the variance to the theoretical outlet mean can be less than 10%, achieving optimal flow distribution.

[0057] See Figure 4 , Figure 6As shown, in one embodiment, the mixing component 40 further includes an annular wall 42, which is disposed on the periphery of the mixing plate 41 and extends along the length of the mounting channel section 103. The annular wall 42 is in a sealing fit with the peripheral wall of the mounting channel section 103.

[0058] With this configuration, by providing an annular wall 42 around the mixing plate 41 and extending the annular wall 42 along the length of the installation channel section 103, the contact area between the mixing component 40 and the installation channel section 103 can be increased. This improves the sealing effect between the periphery of the mixing component 40 and the periphery of the installation channel section 103, allowing all the refrigerant passing through the mixing component 40 to be processed by the mixing component 40.

[0059] Optionally, the distribution component 10 is a plate-shaped component. The plate-shaped component can be a single plate with a certain thickness. The first flow channel 101 and the second flow channel 102 can be formed inside the plate-shaped component and extend along its length. Alternatively, the plate-shaped component can be composed of two plates joined together, with a pre-reserved groove on each plate. When the two plates are joined to form the plate-shaped component, the grooves on the two plates interlock to form the first flow channel 101 and the second flow channel 102. The relevant configuration is as follows. (See reference...) Figure 4 , Figure 5 As shown, in one embodiment, the distribution member 10 includes a first plate 11 and a second plate 12. The first plate 11 is recessed with a first flow channel groove 111 and a second flow channel groove 112, and the second plate 12 is recessed with a third flow channel groove 121 and a fourth flow channel groove 122.

[0060] The first plate 11 is joined with the second plate 12 so that the first flow channel 111 and the third flow channel 121 are spliced ​​together to form the first flow channel 101, and the second flow channel 112 and the fourth flow channel 122 are spliced ​​together to form the second flow channel 102.

[0061] In the above embodiments, the first flow channel 111 and the second flow channel 112 can be formed by stamping the first plate 11, and the third flow channel 121 and the fourth flow channel 122 can be formed by stamping the second plate 12. This allows the first plate 11 and the second plate 12 to be less thick, while ensuring that the first flow channel 101 and the second flow channel 102 have sufficient inner diameter to guarantee the flow of the refrigerant. Furthermore, the first plate 11 and the second plate 12 can be joined by screw fastening or by welding; the specific method is not limited.

[0062] Regarding the materials of the first connecting pipe group 20 and the second connecting pipe group 30, the first connecting pipe group 20 and the second connecting pipe group 30 can be made of copper. This ensures that the heat exchange effect of the part connecting the distributor 100 and the heat exchanger body 200 is good, and can cooperate with the heat exchanger body 200 to achieve a better heat exchange function. At the same time, the material of the distribution component 10 can be stainless steel. That is to say, the materials of the first plate 11, the second plate 12 and the mixing component 40 can be stainless steel. This setting allows the distributor 100 to achieve the existing diversion and convergence functions while saving the material cost of the distributor 100.

[0063] To further reduce the cost of the distributor 100, optionally, the first plate 11 and the second plate 12 are welded together, and the first connecting pipe assembly 20 and the second connecting pipe assembly 30 are welded together with the first plate 11 or the second plate 12. This arrangement connects the first plate 11 and the second plate 12 by welding, thereby constructing the first flow channel 101 and the second flow channel 102. This reduces the processing cost of setting up the first flow channel 101 and the second flow channel 102. Simultaneously, by welding, the first connecting pipe assembly 20 and the second connecting pipe assembly 30 are assembled onto the plate-shaped distributor 10, reducing the assembly cost of the first connecting pipe assembly 20 and the second connecting pipe assembly 30, thus effectively reducing the overall processing cost of the distributor 100.

[0064] In addition, to improve the installation stability of the mixing component 40 in the installation channel section 103 and to improve the welding quality between the first plate 11 and the second plate 12, the annular wall 42 may optionally be welded to the inner wall of the installation channel section 103. Thus, by welding the annular wall 42 to the inner wall of the installation channel section 103, the mixing component 40 can serve as an intermediate positioning structure for the welding fit between the first plate 11 and the second plate 12, thereby improving the welding quality between the first plate 11 and the second plate 12, and ensuring that the annular wall 42 is securely installed within the installation channel section 103.

[0065] See Figure 2 As shown, in one embodiment, the distribution member 10 is further provided with a subcooling channel 105, which is used to input refrigerant into the subcooler.

[0066] In the above embodiment, when the distributor 100 is applied to the outdoor heat exchanger of the air conditioner and the air conditioner is in cooling mode, the refrigerant flowing into the first flow channel 101 after being converged from the first connecting pipe group 20 can flow from the flow port of the first flow channel 101 through the subcooling inlet pipe 50 to the subcooler. After being further cooled by the subcooler, the refrigerant flows into the subcooling flow channel 105, converges through the subcooling flow channel 105, and flows to the indoor heat exchanger through the subcooling outlet pipe. In this way, the distributor 100 can converge the subcooled refrigerant and then flow it to the indoor heat exchanger. A mixing element 40 can also be provided in the subcooling flow channel 105 to atomize and mix the refrigerant in the subcooling flow channel 105, and the material of the subcooling inlet pipe and the subcooling outlet pipe can also be copper; the specific material is not limited.

[0067] This utility model also proposes a heat exchanger, which includes a heat exchanger body 200 and a distributor 100. The specific structure of the distributor 100 is as described in the above embodiments. Since this heat exchanger adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, and will not be described in detail here. It is understood that the heat exchanger can be an indoor heat exchanger or an outdoor heat exchanger of the air conditioner, and is not specifically limited.

[0068] In addition, this utility model also proposes an air conditioner, which includes the above-mentioned distributor or the above-mentioned heat exchanger.

[0069] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A distributor for a heat exchanger in an air conditioner, characterized in that, include: The distribution component has a first flow channel and a second flow channel configured within it; The first connecting pipe assembly has one end connected to the first flow channel and the other end used to connect to the heat exchanger body. A second connecting pipe assembly, one end of which is connected to the second flow channel, and the other end of which is used to connect to the heat exchanger body; and A mixing element is disposed on the distribution element. The mixing element is used to mix the refrigerant flowing from the first flow channel to the first connecting pipe assembly with gas and liquid, or to mix the refrigerant flowing from the second flow channel to the second connecting pipe assembly with gas and liquid.

2. The dispenser as claimed in claim 1, characterized in that, The first flow channel is provided with an installation channel section; and / or, the second flow channel is provided with an installation channel section; The installation channel section is provided with the mixing element, and the periphery of the mixing element is sealed to the periphery of the installation channel section. The mixing element includes a mixing plate arranged radially along the installation channel section, and the mixing plate has multiple mixing holes through it.

3. The dispenser as described in claim 2, characterized in that, The multiple mixing holes are evenly distributed on the mixing plate.

4. The dispenser as claimed in claim 2, characterized in that, The sum of the aperture areas of the plurality of mixing holes is defined as S1, and the cross-sectional area of ​​the installation channel section is defined as S2. The ratio of S1 to S2 is not greater than 0.

05.

5. The dispenser as claimed in claim 2, characterized in that, The mixing component also includes an annular wall, which is disposed on the periphery of the mixing plate and extends along the length of the installation channel section. The annular wall is in a sealing fit with the peripheral wall of the installation channel section.

6. The dispenser as claimed in claim 5, characterized in that, The distribution component includes a first plate and a second plate. The first plate is recessed with a first flow channel groove and a second flow channel groove, and the second plate is recessed with a third flow channel groove and a fourth flow channel groove. The first plate is joined with the second plate so that the first flow channel groove and the third flow channel groove are spliced ​​together to form the first flow channel, and the second flow channel groove and the fourth flow channel groove are spliced ​​together to form the second flow channel.

7. The dispenser as claimed in claim 6, characterized in that, The first plate, the second plate, and the mixing component are made of stainless steel; And / or, the first connecting pipe assembly and the second connecting pipe assembly are made of copper.

8. The dispenser as claimed in claim 6, characterized in that, The first plate and the second plate are welded together; And / or, the annular wall is welded to the inner wall of the mounting channel section.

9. The dispenser as claimed in any one of claims 1 to 8, characterized in that, The distribution unit also includes a subcooling channel for introducing refrigerant into the subcooler.

10. The dispenser as claimed in any one of claims 1 to 8, characterized in that, The first connecting pipe group is provided with multiple first connecting pipes, which are spaced apart along the length of the first flow channel; And / or, the second connecting pipe group is provided with multiple second connecting pipes, which are distributed at intervals along the length direction of the second flow channel.

11. A heat exchanger, characterized in that, It includes a heat exchanger body and a distributor as claimed in any one of claims 1 to 10.

12. An air conditioner, characterized in that, It includes the distributor according to any one of claims 1 to 10 or the heat exchanger according to claim 11.

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