Air conditioner

Abstract

The utility model discloses an air conditioner which comprises a compressor used for compressing low-temperature and low-pressure refrigerant gas into high-temperature and high-pressure refrigerant gas so as to provide power for refrigerants; one of the indoor heat exchanger and the outdoor heat exchanger is used as an evaporator, and the other one is used as a condenser; a throttling assembly; a refrigerant circulation loop; the refrigerant circulation loop comprises a distribution unit, the distribution unit comprises a main pipeline, and the main pipeline is connected to the compressor; the multiple flow dividing pipelines are all connected to the indoor heat exchanger or the outdoor heat exchanger; a main channel is arranged at one end of the distributor, a branch channel is arranged at the other end of the distributor, and the shunting pipeline is connected to the branch channel; wherein the branch channel comprises a first one-way channel and a second one-way channel, a first baffle is arranged in the first one-way channel, and a second baffle is arranged in the second one-way channel. The air conditioner has the advantages of being reasonable in refrigerant distribution, compact in structure, capable of improving heat exchange performance and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioning equipment, in particular to an air conditioner. Background Art

[0002] An air conditioner performs a refrigeration cycle of the air conditioner by using a compressor, a condenser, an expansion valve, and an evaporator. The compressor compresses the refrigerant gas in a high-temperature and high-pressure state and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process. The indoor heat exchanger and the outdoor heat exchanger are used as condensers or evaporators. When the indoor heat exchanger is used as a condenser, the air conditioner serves as a heater in the heating mode, and when the indoor heat exchanger is used as an evaporator, the air conditioner serves as a cooler in the cooling mode.

[0003] Among them, the indoor heat exchanger or the outdoor heat exchanger is connected to a distribution unit, and the distribution unit shunts the refrigerant through a liquid distributor. However, the multiple shunt pipelines of the distributor are usually fixed. As the working load of the heat exchanger changes, the optimal number of shunt paths for its performance will also change. At this time, the fixed distribution structure of the traditional distributor cannot be well matched with the actual working conditions and cannot meet the optimal distribution after switching between different working conditions, especially between the refrigeration and heating working conditions. Summary of the Utility Model

[0004] The utility model aims to at least solve one of the technical problems existing in the prior art. For this reason, an object of the utility model is to provide an air conditioner, which has the advantages of reasonable refrigerant distribution, compact structure, improved heat exchange performance, etc.

[0005] To achieve the above object, an air conditioner according to an embodiment of the present invention includes: a compressor for compressing a low-temperature and low-pressure refrigerant gas into a high-temperature and high-pressure refrigerant gas to provide power for the refrigerant; an indoor heat exchanger and an outdoor heat exchanger, one of the indoor heat exchanger and the outdoor heat exchanger serving as an evaporator and the other serving as a condenser; a throttling assembly for controlling the refrigerant flow rate; a refrigerant circulation circuit connecting the compressor, the indoor heat exchanger, the throttling assembly, and the outdoor heat exchanger; the refrigerant circulation circuit including a distribution unit, the distribution unit including: a main pipeline connecting to the compressor; a plurality of shunt pipelines all connecting to the indoor heat exchanger or the outdoor heat exchanger; a distributor having a main channel at one end and a plurality of sub-channels communicating with the main channel at the other end, the main pipeline connecting to the main channel, and the shunt pipelines connecting to the sub-channels; wherein, the sub-channels include a first one-way channel and a second one-way channel, a first baffle is constructed in the first one-way channel, one side edge of the first baffle is rotatably mounted on the inner wall of the first one-way channel, the first baffle opens the first one-way channel when the refrigerant flows from the main pipeline to the shunt pipeline, a second baffle is constructed in the second one-way channel, one side edge of the second baffle is rotatably mounted on the inner wall of the second one-way channel, and the second baffle opens the second one-way channel when the refrigerant flows from the shunt pipeline to the main pipeline.

[0006] The air conditioner according to the embodiment of the present invention has the advantages of reasonable refrigerant distribution, compact structure, and improved heat exchange performance.

[0007] According to some specific embodiments of the present invention, inwardly protruding stop edges are constructed on the inner walls of both the first one-way channel and the second one-way channel. The stop edge in the first one-way channel stops on one side of the first baffle facing the main channel to close the first one-way channel, and the stop edge in the second one-way channel stops on the side of the second baffle facing away from the main channel to close the second one-way channel.

[0008] According to some specific embodiments of the present invention, the stop edge has an outer edge and an inner edge. The outer edge is connected to the inner walls of the first one-way channel and the second one-way channel, and the inner edge is connected to the inner peripheral side of the outer edge; the outer edge in the first one-way channel surrounds the first baffle, and the inner edge in the first one-way channel stops the first baffle; the outer edge in the second one-way channel surrounds the second baffle, and the inner edge in the second one-way channel stops the second baffle.

[0009] Further, a rotating shaft groove is formed in the outer edge, a rotating shaft is installed in the rotating shaft groove, and the rotating shaft is connected to the first baffle or the second baffle.

[0010] According to some specific embodiments of the present invention, at least one of the first baffle and the retaining edge in the first one-way channel is configured with a first sealing ring to seal with each other; at least one of the second baffle and the retaining edge in the second one-way channel is configured with a second sealing ring to seal with each other.

[0011] According to some specific embodiments of the present invention, the number of the first one-way channels is more than that of the second one-way channels.

[0012] According to some specific embodiments of the present invention, the distributor includes: a main joint head, which is configured to be cylindrical, and the main channel is formed in the main joint head; a sub-joint head, which is configured to be cylindrical and has a diameter larger than that of the main joint head, and the sub-channel is formed in the sub-joint head.

[0013] Further, a transition portion is formed on one side of the sub-joint head axially facing the main joint head, the diameter of the transition portion gradually decreases towards the main joint head, a diversion channel communicating the sub-channel and the main channel is formed in the transition portion, a conical diversion portion is formed at the center of the transition portion, and the diversion channel surrounds the diversion portion.

[0014] According to some specific embodiments of the present invention, the indoor heat exchanger or the outdoor heat exchanger connected to the distribution unit includes: fins, which are stacked and arranged at intervals; a plurality of U-shaped heat exchange tubes, and the plurality of U-shaped heat exchange tubes are inserted through the fins and arranged at intervals along the length direction of the fins, and one end of each U-shaped heat exchange tube is connected to one of the shunt pipelines; a flute-shaped tube, which is connected to the other ends of the plurality of U-shaped heat exchange tubes.

[0015] According to some specific embodiments of the present invention, the indoor heat exchanger or the outdoor heat exchanger connected to the distribution unit further includes: a U-shaped subcooling tube, which is inserted through the fins and is located below the plurality of U-shaped heat exchange tubes, one end of the U-shaped subcooling tube is connected to the flute-shaped tube, and the other end is connected to the throttling assembly.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. Description of the Drawings

[0017] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the following description of embodiments in conjunction with the accompanying drawings, wherein:

[0018] Figure 1 It is a schematic diagram of the distribution unit of an air conditioner according to an embodiment of the present utility model connecting to an outdoor heat exchanger.

[0019] Figure 2 It is a schematic diagram of the distribution unit of an air conditioner according to another embodiment of the present utility model connecting to an outdoor heat exchanger.

[0020] Figure 3 It is a schematic structural diagram of a distributor of an air conditioner according to an embodiment of the present utility model;

[0021] Figure 4 It is another schematic structural diagram of a distributor of an air conditioner according to an embodiment of the present utility model;

[0022] Figure 5 It is a schematic diagram of one side of a cross-section of a distributor of an air conditioner according to an embodiment of the present utility model;

[0023] Figure 6 It is a schematic diagram of the other side of a cross-section of a distributor of an air conditioner according to an embodiment of the present utility model;

[0024] Figure 7 It is a sectional view of a distributor of an air conditioner according to an embodiment of the present utility model;

[0025] Figure 8 It is a schematic diagram of a first baffle of an air conditioner according to an embodiment of the present utility model;

[0026] Figure 9 It is a schematic diagram of the inside of a first one-way diversion channel of an air conditioner according to an embodiment of the present utility model;

[0027] Figure 10 It is a schematic diagram of the inside of a second one-way diversion channel of an air conditioner according to an embodiment of the present utility model;

[0028] Figure 11 It is a schematic diagram of an indoor heat exchanger or an outdoor heat exchanger connected by a distribution unit;

[0029] Reference numerals:

[0030] Distribution unit 100, main pipeline 110, shunt pipeline 120, indoor heat exchanger or outdoor heat exchanger 200,

[0031] Distributor 130, main channel 101, branch channel 102, first one-way channel 103, second one-way channel 104,

[0032] The first baffle 11, the second baffle 12, the retaining edge 13, the outer edge 14, the inner edge 15, the rotating shaft 141,

[0033] The main joint part 131, the branch joint part 132, the transition part 133, the diversion channel 134, the diversion part 135, the fin 210,

[0034] The U-shaped heat exchange tube 220, the flute-shaped tube 230, the U-shaped subcooling tube 240. Detailed implementation mode

[0035] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0036] In the description of the present invention, the "first feature" and the "second feature" may include one or more of such features.

[0037] In the description of the present invention, the meaning of "a plurality" is two or more.

[0038] In the description of the present invention, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween.

[0039] In the description of the present invention, the first feature being "above", "above" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature.

[0040] The air conditioner according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0041] As Figures 1-11 shown, the air conditioner according to an embodiment of the present invention includes a compressor, an indoor heat exchanger, an outdoor heat exchanger, a throttling assembly, and a refrigerant circulation loop.

[0042] The compressor is used to compress the low-temperature and low-pressure refrigerant gas into a high-temperature and high-pressure refrigerant gas to provide power for the refrigerant. One of the indoor heat exchanger and the outdoor heat exchanger serves as an evaporator and the other serves as a condenser for heat exchange. The throttling component is used to control the refrigerant flow rate. The refrigerant circulation loop is connected to the compressor, the indoor heat exchanger, the throttling component, and the outdoor heat exchanger.

[0043] The refrigerant circulation loop includes a distribution unit 100, and the distribution unit 100 includes a main pipeline 110, a plurality of shunt pipelines 120, and a distributor 130. The main pipeline 110 is connected to the compressor. The plurality of shunt pipelines 120 are all connected to the indoor heat exchanger or the outdoor heat exchanger (hereinafter referred to as the heat exchanger). One end of the distributor 130 is provided with a main channel 101 and the other end is provided with a plurality of sub-channels 102 communicating with the main channel 101. The main pipeline 110 is connected to the main channel 101, and the shunt pipelines 120 are connected to the sub-channels 102.

[0044] Among them, the sub-channel 102 includes a first one-way channel 103 and a second one-way channel 104. A first baffle 11 is constructed in the first one-way channel 103. One side edge of the first baffle 11 is rotatably installed on the inner wall of the first one-way channel 103. The first baffle 11 opens the first one-way channel 103 when the refrigerant flows from the main pipeline 110 to the shunt pipeline 120. A second baffle 12 is constructed in the second one-way channel 104. One side edge of the second baffle 12 is rotatably installed on the inner wall of the second one-way channel 104. The second baffle 12 opens the second one-way channel 104 when the refrigerant flows from the shunt pipeline 120 to the main pipeline 110.

[0045] For example, the distribution unit 100 can be connected to the indoor heat exchanger or the indoor heat exchanger. The heat exchanger 200 is specifically a finned tube heat exchanger. When the heat exchanger 200 serves as a condenser or an evaporator, there will be a large difference in the best refrigerant flow rate and performance shunt. For example, the number of the best shunt paths when the heat exchanger 200 connected to the distribution unit 100 serves as a condenser is less than the number of the best shunt paths when it serves as an evaporator. Specifically in the present invention, the number of the first one-way channels 103 is less than the number of the second one-way channels 104.

[0046] Moreover, the extending directions of the first one-way channel 103 and the second one-way channel 104 are parallel and the refrigerant flow directions inside are opposite. The numbers of the first one-way channel 103 and the second one-way channel 104 are not specifically limited, and different numbers can be selected according to different heat exchange capacities of the heat exchanger 200.

[0047] According to the air conditioner of the embodiment of the present utility model, the sub-channels 102 of the distributor 130 include a first one-way channel 103 and a second one-way channel 104. Only the refrigerant can flow unidirectionally through the first baffle 11 in the first one-way channel 103, and only the refrigerant can flow unidirectionally through the second baffle 12 in the second one-way channel 104. Moreover, the flow directions of the refrigerant in the first one-way channel 103 and the second one-way channel 104 are opposite, forming refrigerant channels in different directions in the same distributor 130, so that the most suitable number of refrigerant transmission channels can be selected according to the working conditions of the heat exchanger 200. And, different flow areas can be formed in opposite directions of the distributor 130, and the first one-way channel 103 and the second one-way channel 104 can be switched according to different states of the heat exchanger 200 as an evaporator or a condenser.

[0048] Wherein, the first baffle 11 and the second baffle 12 can be controlled to open and close by a refrigerant flow direction driving component. The first baffle 11 and the second baffle 12 are driven by the refrigerant flow direction driving component to rotate a specific angle, so that the outer peripheries of the first baffle 11 and the second baffle 12 are sealed with the inner peripheral surfaces of the first one-way channel 103 and the second one-way channel 104. It is also possible to automatically lift and open and close the first baffle 11 and the second baffle 12 by using the pressure of the refrigerant during the refrigerant flow process. The first baffle 11 and the second baffle 12 act as valves. The first baffle 11 opens the first one-way channel 103 when the refrigerant flows from the main pipeline 110 to the shunt pipeline 120, and the first baffle 11 closes the first one-way channel 103 when the refrigerant flows from the shunt pipeline 120 to the main pipeline 110. The second baffle 12 opens the second one-way channel 104 when the refrigerant flows from the shunt pipeline 120 to the main pipeline 110, and the second baffle 12 closes the second one-way channel 104 when the refrigerant flows from the main pipeline 110 to the shunt pipeline 120. Thus, both the first baffle 11 and the second baffle 12 can play the role of unidirectional flow and reverse cut-off.

[0049] Furthermore, both the first one-way channel 103 and the second one-way channel 104 are formed in the integral structure of the distributor 130. The refrigerant flow structure of the distributor 130 is more compact, occupying less space inside the air conditioner. The distributor 130 forms flow paths with opposite flows in the first one-way channel 103 and the second one-way channel 104 by constructing the first baffle 11 and the second baffle 12. When the air conditioner is in the refrigeration or heating working condition, the heat exchanger 200 connected to the distribution unit 100 serves as a condenser and an evaporator respectively, and the flow direction of the refrigerant in the distributor 130 is opposite. Thus, when the air conditioner is in different refrigeration and heating working conditions, the refrigerant flows unidirectionally in the first one-way channel 103 and the second one-way channel 104 respectively. The refrigerant flow rates in the first one-way channel 103 and the second one-way channel 104 can achieve the best distribution paths, so that the heat exchanger 200 can reach the best performance both in heating and refrigeration.

[0050] In addition, one side edge of the first baffle 11 is rotatably mounted on the inner wall of the first one-way channel 103, and one side edge of the second baffle 12 is rotatably mounted on the inner wall of the second one-way channel 104. The rotation axis of the first baffle 11 does not occupy the space of the first one-way channel 103, and the first baffle 11 can fully open the first one-way channel 103 without blocking the first one-way channel 103; the rotation axis of the second baffle 12 does not occupy the space of the second one-way channel 104, and the second baffle 12 can fully open the second one-way channel 104 without blocking the second one-way channel 104. Thus, the refrigerant flow efficiency of the first one-way channel 103 and the second one-way channel 104 is higher. Moreover, using the first baffle 11 and the second baffle 12 to control the flow of the first one-way channel 103 and the second one-way channel 104 also has lower costs. Both the first baffle 11 and the second baffle 12 are constructed as single-piece sheet structures, which are convenient for processing and forming, and there are no gaps in the central regions of the first baffle 11 and the second baffle 12, and the intercepting and closing effect is better, thereby improving the heat exchange performance.

[0051] Therefore, the air conditioner according to the embodiment of the present invention has the advantages of reasonable refrigerant distribution, compact structure, and improved heat exchange performance.

[0052] In some specific embodiments of the present invention, as Figure 5 、 Figure 6 and Figure 8 shown, the inner walls of both the first one-way channel 103 and the second one-way channel 104 are constructed with inwardly protruding retaining edges 13. The retaining edge 13 in the first one-way channel 103 stops against one side of the first baffle 11 facing the main channel 101 to close the first one-way channel 103, and the retaining edge 13 in the second one-way channel 104 stops against one side of the second baffle 12 facing away from the main channel 101 to close the second one-way channel 104.

[0053] For example, the retaining edge 13 is integrally processed with the distributor 130, or the retaining edge 13 can be welded to the distribution unit. The first baffle 11 and the second baffle 12 are both configured as circular shapes. The cross-sections of the first one-way channel 103 and the second one-way channel 104 are configured as circular shapes. The retaining edge 13 is configured as an annular shape. The inner diameter of the retaining edge 13 in the first one-way channel 103 is smaller than the outer diameter of the first baffle 11, and the inner diameter of the retaining edge 13 in the second one-way channel 104 is smaller than the outer diameter of the second baffle 12. The retaining edge 13 plays a limiting role for the first baffle 11 and the second baffle 12. When the first baffle 11 and the second baffle 12 rotate to specific positions, they are closed with the retaining edge 13, thereby closing the first one-way channel 103 and the second one-way channel 104. Thus, not only the outer peripheral surfaces of the first baffle 11 and the second baffle 12 are closed with the inner peripheral surfaces of the first one-way channel 103 and the second one-way channel 104, but also the end surfaces of the first baffle 11 and the second baffle 12 are closed with the retaining edge 13, so as to close the transmission of the refrigerant in the first one-way channel 103 and the second one-way channel 104 when sealing is required. When the refrigerant flows from the shunt pipeline 120 to the main pipeline 110, the first baffle 11 seals with the corresponding retaining edge 13 to close the first one-way channel 103. When the refrigerant flows from the main pipeline 110 to the shunt pipeline 120, the second baffle 12 closes with the corresponding retaining edge 13 to close the second one-way channel 104, playing a role of one-way flow and reverse cut-off.

[0054] In some specific embodiments of the present invention, as Figure 8 shown, the retaining edge 13 has an outer edge 14 and an inner edge 15. The outer edge 14 is connected to the inner walls of the first one-way channel 103 and the second one-way channel 104, and the inner edge 15 is connected to the inner peripheral side of the outer edge 14. The outer edge 14 in the first one-way channel 103 surrounds the first baffle 11, and the inner edge 15 in the first one-way channel 103 stops against the first baffle 11. The outer edge 14 in the second one-way channel 104 surrounds the second baffle 12, and the inner edge 15 in the second one-way channel 104 stops against the second baffle 12.

[0055] By constructing the outer edge 14 and the inner edge 15 of the retaining edge 13, the outer edge 14 can provide a certain sealing effect on the outer peripheral sides of the first baffle 11 and the second baffle 12, while the inner edge 15 provides a sealing effect on the first baffle 11 and the second baffle 12 along the axial directions of the first one-way channel 103 and the second one-way channel 104. When the first baffle 11 and the second baffle 12 are automatically lifted by the pressure of the refrigerant during the refrigerant flow process to open and close the first baffle 11 and the second baffle 12.

[0056] Furthermore, as Figure 5 , Figure 6 and Figure 8 shown, the outer edge 14 is configured with a rotating shaft groove, and a rotating shaft 141 is installed in the rotating shaft groove. The rotating shaft 141 is connected to the first baffle 11 or the second baffle 12.

[0057] It is installed on the outer edge 14 through a rotating shaft 141. The rotating shaft 141 does not need to occupy the refrigerant flow space in the first one-way channel 103 and the second one-way channel 104. Moreover, the areas of the first baffle 11 and the second baffle 12 are relatively large, the force arms are relatively long, and they are relatively easy to rotate.

[0058] In some specific embodiments of the present invention, at least one of the first baffle 11 and the retaining edge 13 in the first one-way channel 103 is configured with a first sealing ring (not shown in the figure) to seal with each other. At least one of the second baffle 12 and the retaining edge 13 in the second one-way channel 104 is configured with a second sealing ring (not shown in the figure) to seal with each other.

[0059] For example, the first sealing ring is adhered to the first baffle 11 and corresponds to the shape of the retaining edge 13 of the first one-way channel 103, and the second sealing ring is adhered to the second baffle 12 and corresponds to the shape of the retaining edge 13 of the first one-way channel 103. By utilizing the elastic deformation of the first sealing ring and the second sealing ring, the sealing performance between the first baffle 11 and the retaining edge 13 and between the second baffle 12 and the retaining edge 13 is enhanced.

[0060] In some specific embodiments of the present invention, such as Figure 5 and Figure 6 shown, the number of the first one-way channels 103 is more than the number of the second one-way channels 104. Among them, the positions of the first one-way channels 103 and the second one-way channels 104 can be freely set according to needs. For example, some of the first one-way channels 103 and the second one-way channels 104 are alternately arranged in the circumferential direction, or the first one-way channels 103 are located on one radial side of the distribution unit 100 and the second one-way channels 104 are located on the other radial side, as long as the number of the first one-way channels 103 is more than the number of the second one-way channels 104. For example, the cross-sectional shapes of the first one-way channels 103 and the second one-way channels 104 are the same, both are circular, and the ratio of the number of the first one-way channels 103 to the second one-way channels 104 is 2:3, that is, the optimal number of shunts of the heat exchanger 200 as a condenser is less than the optimal number of shunts as an evaporator, so as to meet the difference in the optimal shunts of the refrigerant flow rate and performance.

[0061] When the heat exchanger 200 works as a condenser and an evaporator respectively, taking the outdoor heat exchanger as an example:

[0062] When the outdoor heat exchanger works as a condenser, as Figure 1 shown, the refrigerant is in the high-pressure area, the main pipeline 110 is connected to the compressor exhaust pipe, the influence of the pressure drop on the performance of the heat exchanger 200 is relatively small, and a smaller number of shunts of the first one-way channels 103 can be used to flow the refrigerant, so as to increase the flow rate of the refrigerant in each first one-way channel 103 and then increase the heat transfer coefficient of the heat exchanger 200.

[0063] When the outdoor heat exchanger operates as an evaporator, as Figure 2 shown, the refrigerant is in the low-pressure area. The main pipeline 110 is connected to the compressor suction pipe. The pressure drop has a greater impact on the performance of the heat exchanger 200. Therefore, it is necessary to use the second one-way channel 104 with a larger number of shunts to circulate the refrigerant to reduce the pressure drop on the refrigerant side, thereby avoiding the deterioration of the heat exchange performance caused by excessive pressure drop leading to evaporation temperature slip.

[0064] In some specific embodiments of the present invention, as Figure 7 shown, the distributor 130 includes a main connection part 131 and a branch connection part 132.

[0065] The main connection part 131 is configured as a cylinder, and the main channel 101 is formed in the main connection part 131. The branch connection part 132 is configured as a cylinder and has a diameter larger than that of the main connection part 131, and the branch channels 102 are formed in the branch connection part 132.

[0066] By configuring the main connection part 131 and the branch connection part 132 of the distributor 130 as cylinders, the refrigerant flows unidirectionally in the main connection part 131 and the branch connection part 132. The flow direction of the refrigerant does not need to change greatly, and the flow resistance is small, thereby ensuring the flow rate of the refrigerant. The diameter of the main connection part 131 is smaller, and the diameter of the branch connection part 132 is larger, adapting to the flow directions of the internal main channel 101 and the branch channels 102. Moreover, both the first one-way channel 103 and the second one-way channel 104 are formed inside the branch connection part 132, so that the distributor 130 maintains a high structural integrity. In addition, one end of the main connection part 131 is adapted to be inserted and connected to the compressor through the main pipeline 110, and one end of the branch connection part 132 is inserted and connected through the shunt pipeline 120, and the structure is simple and reliable.

[0067] In some specific embodiments of the present invention, as Figure 7 shown, a transition part 133 is constructed on one side of the axial direction of the branch connection part 132 facing the main connection part 131. The diameter of the transition part 133 gradually decreases towards the main connection part 131. A diversion channel 134 connecting the branch channels 102 and the main channel 101 is constructed inside the transition part 133. A conical diversion part 135 is constructed at the center of the transition part 133, and the diversion channel 134 surrounds the diversion part 135.

[0068] By constructing the transition part 133 on the branch connection part 132, a transition structure is formed on the side of the branch channels 102 facing the main channel 101. Moreover, a conical diversion part 135 is constructed at the center of the transition part 133. The refrigerant can flow along the diversion part 135 in the diversion channel 134, and the resistance of the refrigerant flowing between the main channel 101 and the branch channels 102 is small.

[0069] In some specific embodiments of the present utility model, such as Figure 11 shown, the indoor heat exchanger or the outdoor heat exchanger connected to the distribution unit 100 includes fins 210, a plurality of U-shaped heat exchange tubes 220, and a flute-shaped tube 230.

[0070] The fins 210 are stacked and arranged at intervals in the thickness direction. A plurality of U-shaped heat exchange tubes 220 are inserted through the fins 210 and are arranged at intervals along the length direction of the fins 210. One end of each U-shaped heat exchange tube 220 is connected to a shunt pipeline 120. The flute-shaped tube 230 is connected to the other ends of the plurality of U-shaped heat exchange tubes.

[0071] For example, the heat exchanger 200 is configured as a single-row structure, that is, a row of U-shaped heat exchange tubes 220 is arranged in the thickness direction of the fins 210, and the plurality of U-shaped heat exchange tubes 220 are connected to the shunt pipeline 120 on the same side of the fins 210.

[0072] Such as Figure 1 shown, when the heat exchanger 200 is used as a condenser, the flow directions of the plurality of U-shaped heat exchange tubes 220 communicating with the first one-way channel 103 are the same. The other ends of the plurality of U-shaped heat exchange tubes cause the refrigerant to converge at one place through the connecting flute-shaped tube 230 and then are distributed to the plurality of U-shaped heat exchange tubes, so that the refrigerant flows fully in the U-shaped heat exchange tubes 220, improving the comprehensive performance of the heat exchanger 200.

[0073] Such as Figure 2 shown, when the heat exchanger 200 is used as an evaporator, the flow directions of the plurality of U-shaped heat exchange tubes 220 communicating with the second one-way channel 104 are the same. The other ends of the plurality of U-shaped heat exchange tubes cause the refrigerant to converge at one place through the connecting flute-shaped tube 230 and then converge to the distributor 130, so that the refrigerant flows fully in the U-shaped heat exchange tubes 220, improving the comprehensive performance of the heat exchanger 200.

[0074] Furthermore, such as Figure 11 shown, the indoor heat exchanger or the outdoor heat exchanger connected to the distribution unit 100 further includes a U-shaped subcooling tube 240.

[0075] The U-shaped subcooling tube 240 is inserted through the fins 210 and is located below the U-shaped heat exchange tubes 220. One end of the U-shaped subcooling tube 240 is connected to the flute-shaped tube 230, and the other end is connected to a throttling assembly. Among them, the structure of the U-shaped subcooling tube 240 is the same as that of the U-shaped heat exchange tubes 220. The U-shaped subcooling tube 240 can increase the volume of the refrigerant flowing through the heat exchanger 200, thereby accommodating more liquid refrigerant, and further enhancing heat exchange.

[0076] The air conditioner according to the embodiment of the present utility model and its operation are known to those of ordinary skill in the art and will not be described in detail here.

[0077] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0078] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.

Claims

1. An air conditioner, comprising: A compressor is used to compress low-temperature and low-pressure refrigerant gas into high-temperature and high-pressure refrigerant gas to provide power for the refrigerant; an indoor heat exchanger and an outdoor heat exchanger, one of the indoor heat exchanger and the outdoor heat exchanger serving as an evaporator and the other serving as a condenser; A throttling component, wherein the throttling component is used to control the flow rate of the refrigerant; A refrigerant circulation loop, wherein the refrigerant circulation loop is connected to the compressor, the indoor heat exchanger, the throttling assembly and the outdoor heat exchanger; It is characterized in that the refrigerant circulation loop includes a distribution unit, and the distribution unit includes: a main pipe connected to the compressor; A plurality of flow-dividing pipelines, wherein the plurality of flow-dividing pipelines are all connected to the indoor heat exchanger or the outdoor heat exchanger; A distributor, wherein one end of the distributor is provided with a main channel and the other end is provided with a plurality of branch channels connected to the main channel, the main pipeline is connected to the main channel, and the branch pipeline is connected to the branch channels; Among them, the branch channel includes a first one-way channel and a second one-way channel, a first baffle is constructed in the first one-way channel, and one side edge of the first baffle can be rotatably installed on the inner wall of the first one-way channel, and the first baffle opens the first one-way channel when the refrigerant flows from the main line to the branch line, and a second baffle is constructed in the second one-way channel, and one side edge of the second baffle can be rotatably installed on the inner wall of the second one-way channel, and the second baffle opens the second one-way channel when the refrigerant flows from the branch line to the main line.

2. The air conditioner according to claim 1, characterized in that: The inner wall of the first one-way channel and the inner wall of the second one-way channel are both constructed with an inwardly protruding stop edge, the stop edge in the first one-way channel stops at the side of the first baffle plate facing the main channel to close the first one-way channel, and the stop edge in the second one-way channel stops at the side of the second baffle plate facing away from the main channel to close the second one-way channel.

3. The air conditioner according to claim 2, characterized in that: The blocking edge has an outer edge and an inner edge, the outer edge is connected to the inner walls of the first one-way channel and the second one-way channel, and the inner edge is connected to the inner circumference of the outer edge; The outer edge of the first one-way channel surrounds the first baffle plate, and the inner edge of the first one-way channel stops at the first baffle plate; The outer edge of the second one-way channel surrounds the second baffle plate, and the inner edge of the second one-way channel stops at the second baffle plate.

4. The air conditioner according to claim 3, characterized in that: The outer edge is structured with a shaft groove, a shaft is installed in the shaft groove, and the shaft is connected to the first baffle plate or the second baffle plate.

5. The air conditioner according to claim 2, characterized in that: At least one of the first baffle plate and the baffle edge in the first one-way channel is configured with a first sealing ring to seal with each other; At least one of the second baffle plate and the baffle edge in the second one-way channel is configured with a second sealing ring to seal with each other.

6. The air conditioner according to claim 1, characterized in that: The number of the first unidirectional channels is greater than the number of the second unidirectional channels.

7. The air conditioner according to claim 1, wherein the distributor comprises: A main joint portion, the main joint portion is configured in a cylindrical shape, and the main channel is formed in the main joint portion; The tap part is configured in a cylindrical shape and has a diameter greater than that of the main joint part, and the branch channel is formed in the tap part.

8. The air conditioner according to claim 7, characterized in that: A transition portion is configured on one side of the branch joint portion axially facing the main joint portion, the diameter of the transition portion gradually decreases toward the main joint portion, a guide channel connecting the branch channel and the main channel is configured in the transition portion, a conical guide portion is configured at the center of the transition portion, and the guide channel surrounds the guide portion.

9. The air conditioner according to claim 1, characterized in that: The indoor heat exchanger or the outdoor heat exchanger connected to the distribution unit comprises: Fins, the fins are stacked and arranged at intervals; A plurality of U-shaped heat exchange tubes, the plurality of U-shaped heat exchange tubes are inserted through the fins and arranged at intervals along the length direction of the fins, and one end of each of the U-shaped heat exchange tubes is connected to one of the diversion pipelines; A flute-shaped tube is connected to the other ends of the plurality of U-shaped heat exchange tubes.

10. The air conditioner according to claim 9, characterized in that: The indoor heat exchanger or the outdoor heat exchanger connected to the distribution unit further includes: A U-shaped subcooling tube is inserted through the fins and is located at the bottom of the plurality of U-shaped heat exchange tubes. One end of the U-shaped subcooling tube is connected to the flute tube, and the other end is connected to the throttling assembly.

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