Distributor, heat exchanger and refrigeration cycle device

Abstract

The invention relates to the technical field of fluid distribution, and discloses a distributor, a heat exchanger and a refrigeration cycle device. The distributor includes: an inflow plate on which an inflow portion is formed for inflow of a refrigerant; the flow path forming plate is provided with a loop main body part communicated with the inflow part, and the loop main body part is in a disconnected ring shape; a splitter plate on which a plurality of flow parts for diverting and flowing out the refrigerant of the loop main body part are formed; and a circulation communication plate provided between the inflow plate and the flow path forming plate or between the flow path forming plate and the splitter plate, a circulation communication part being formed on the circulation communication plate, the circulation communication part communicating the two ends of the loop body part, which are disconnected. According to the distributor, the phenomenon of uneven refrigerant distribution can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of fluid distribution, in particular to a distributor, a heat exchanger and a refrigeration cycle device. BACKGROUND

[0002] After the refrigerant is condensed, it needs to pass through a throttling device to reduce pressure before evaporation, forming gas-liquid two-phase fluid with a certain dryness. Before these two-phase fluids are distributed to the heat exchange tubes, there may be gas-liquid separation, which can cause uneven distribution. How to evenly distribute the refrigerant into the heat exchange tubes to ensure the heat exchange performance is crucial. SUMMARY

[0003] The present application provides a distributor which can improve the uneven distribution of refrigerant.

[0004] In one aspect of the present application, a distributor includes:

[0005] An inflow plate having an inflow portion formed thereon for allowing refrigerant to flow in;

[0006] A flow path forming plate having a loop main body portion provided thereon in communication with the inflow portion, the loop main body portion being in a broken ring shape;

[0007] A flow dividing plate having a plurality of flow-through portions formed thereon, the refrigerant of the loop main body portion flowing out from the plurality of flow-through portions;

[0008] A circulation communication plate provided between the inflow plate and the flow path forming plate or between the flow path forming plate and the flow dividing plate, the circulation communication plate having a circulation communication portion formed thereon, the circulation communication portion communicating the two ends of the loop main body portion which are broken.

[0009] In the present application, the flow path forming plate has a loop main body portion in a broken ring shape provided thereon, and the circulation communication plate has a circulation communication portion formed thereon, the circulation communication portion communicating the two ends of the loop main body portion which are broken. Thus, the loop main body portion and the circulation communication portion communicate to form a complete circulation flow path in a ring shape, and the refrigerant forms a self-circulation in the circulation flow path by relying on its own impact, which can make the gas-liquid two-phase refrigerant mixture uniform, and then be divided into each flow-through portion, thereby ensuring the uniform distribution of the refrigerant.

[0010] In another aspect of the present application, a heat exchanger includes:

[0011] A plurality of heat exchange tubes arranged along a first direction for flow of refrigerant; and

[0012] A distributor for distributing refrigerant to the plurality of heat exchange tubes;

[0013] The distributor includes:

[0014] An inflow plate having an inflow portion formed thereon;

[0015] A flow path forming plate having a loop main portion formed thereon, the loop main portion being in a broken ring shape and communicating with the inflow portion;

[0016] A flow distribution plate having a plurality of flow-through portions formed thereon for distributing the refrigerant from the loop main portion, the flow-through portions communicating with the heat exchange tubes;

[0017] The inflow plate or the flow distribution plate has a circulation communication portion formed thereon, the circulation communication portion communicating two ends of the loop main portion; in the present application, the flow path forming plate has the loop main portion formed thereon in a broken ring shape, the inflow plate or the flow distribution plate has a groove-shaped circulation communication portion formed thereon, and the circulation communication portion communicates two ends of the loop main portion. Thus, the loop main portion and the circulation communication portion communicate to form a complete circulation flow path in a ring shape, the refrigerant forms self-circulation in the circulation flow path by its own impact, the gas-liquid two-phase refrigerant is uniformly mixed, and the refrigerant is then distributed to each flow-through portion, so that the distribution of the refrigerant is uniform.

[0018] In the present application, the circulation communication portion is arranged on the flow distribution plate or the inflow plate, so that one circulation communication plate can be omitted.

[0019] In some embodiments, a portion of the loop main portion corresponding to the inflow portion is a loop inflow portion; the loop main portion is provided with a necking portion having a reduced flow path cross section, and the necking portion is connected to a downstream side of the loop inflow portion.

[0020] In the present application, the necking portion is arranged on the loop main portion and connected to the loop inflow portion, the flow velocity of the refrigerant flowing into the loop inflow portion is increased in the necking portion, and the refrigerant continues to flow to the circulation flow path, so that the necking portion promotes the circulation of the refrigerant in the circulation flow path.

[0021] In some embodiments, two ends of the loop main portion in the broken position are a first broken end and a second broken end, respectively; the loop main portion includes: a first loop segment in a broken ring shape, two ends of the first loop segment being the first broken end and the loop inflow portion, respectively; and a second loop segment, one end of the second loop segment communicating with the necking portion, and the other end of the second loop segment being the second broken end located between the two ends of the first loop segment.

[0022] In the present application, the loop main portion is arranged in a form of connection of the first loop segment and the second loop segment, so that three end portions are formed on the loop main portion, two end portions are two broken ends, and the other end portion can be used as the loop inflow portion. In this way, the refrigerant entering the loop inflow portion can only flow in one direction, so that the single flow direction of the refrigerant in the circulation flow path is ensured.

[0023] In some embodiments, the necking portion is located on the lower side of the loop inflow portion; the second loop segment is connected to the position of the necking portion, and the first flow path portion is extended in a direction orthogonal to the first direction or is extended upwardly in an inclined manner along the first direction.

[0024] In the present application, the first flow path portion of the second loop segment is horizontally or obliquely extended upwardly, so as to avoid the refrigerant in the necking portion from flowing to the first flow path portion, and to make the refrigerant in the necking portion flow downwardly to the loop main body portion.

[0025] In some embodiments, the two ends of the loop main body portion in the disconnected position are respectively a first disconnected end and a second disconnected end; in the projection of the flow path forming plate, the two ends of the circulation communication portion are respectively communicated with the first disconnected end and the second disconnected end, and the middle portion of the circulation communication portion is located between the first disconnected end and the second disconnected end.

[0026] In the present application, the circulation communication portion is located between the two disconnected ends, so as to make the loop main body portion communicate in the shortest path.

[0027] In some embodiments, the loop main body portion has two first and second portions extending along the first direction, the inflow portion is communicated with the first portion, and the flow-through portion is communicated with the second portion.

[0028] In the present application, the inflow position and the outflow position of the loop main body portion are respectively located in the first and second portions, so as to extend the path of the inflow position and the outflow position, and to avoid the problem that when the inflow position and the outflow position are both located in the first or second portion, part of the refrigerant flows out of the loop main body portion without circulating.

[0029] In some embodiments, the loop main body portion has two first and second portions extending along the first direction, and the first portion is close to the windward side of the heat exchanger; the flow-through portion is communicated with the first portion.

[0030] In the present application, the flow-through portion is arranged close to the windward side of the heat exchanger, so that when the refrigerant flows to the heat exchange pipe through the flow-through portion, it will first flow into the hole close to the windward side of the heat exchange pipe. Thus, the hole close to the windward side of the heat exchange pipe obtains more refrigerant flow, which can adapt to the energy of the air in the windward direction, so that the heat exchange efficiency of the heat exchanger is higher.

[0031] In some embodiments, the distributor further comprises a branch flow path plate having a plurality of branch flow paths formed thereon for branching and flowing out the refrigerant flowing into the flow-through portion.

[0032] In the present application, by arranging the branch flow path downstream of the flow-through portion, the number of branches of the distributor can be increased, and the use range of the distributor can be expanded.

[0033] In some embodiments, the branch flow path includes a branch inflow section communicating with the flow section; the branch inflow section includes two branch inflow sections that are spaced apart and arranged in a direction orthogonal to the first direction.

[0034] In this application, the branch inflow section has two spaced-apart sections, which allows the refrigerant to be directly divided into two parts at the branch inflow section. It does not require increasing the lateral dimension of the branch flow path in order to achieve horizontal flow splitting. This solves the problem that the lateral dimension of the branch flow path is large when the branch inflow section is a horizontal straight section in the prior art. In this application, the lateral dimension of the branch flow path is more compact.

[0035] In some embodiments, the branch flow path includes a plurality of branch sections for refrigerant to branch out; the branch sections extend in a straight line along a direction orthogonal to the first direction.

[0036] In this application, the branch extends in a straight line along a direction orthogonal to the first direction, that is, the length direction of the branch is not the first direction. Therefore, the size of the branch in the first direction is smaller, and the heat exchange tubes connected to the branch in the first direction can be arranged more compactly. For heat exchangers of the same size, this application can arrange more heat exchange tubes in the first direction, thereby improving the heat exchange efficiency of the heat exchanger.

[0037] In another aspect of this application, a refrigeration cycle apparatus is also provided, including the heat exchanger described above, wherein the heat exchanger is at least one of an evaporator and a condenser.

[0038] In this application, the number of heat exchange tubes connected to the distributor increases from top to bottom. The fewer the number of outlets of the distributor, the more refrigerant flow in the corresponding heat exchange tubes. This makes the refrigerant flow on the heat exchanger increase from bottom to top, which matches the distribution trend of the wind speed increasing with the height of the heat exchanger, thereby making the heat exchange efficiency of the heat exchanger reach its best. Attached Figure Description

[0039] Figure 1 A schematic diagram showing the appearance of a refrigeration cycle apparatus according to some embodiments is provided;

[0040] Figure 2 A schematic diagram of a refrigeration cycle apparatus according to some embodiments is shown;

[0041] Figure 3 A cross-sectional view of a refrigeration cycle apparatus according to some embodiments is shown;

[0042] Figure 4 A schematic diagram of the structure of a heat exchanger in a refrigeration cycle apparatus according to some embodiments is shown;

[0043] Figure 5 A side view of a heat exchanger in a refrigeration cycle apparatus according to some embodiments is shown;

[0044] Figure 6 A partial schematic diagram of a microchannel heat exchanger in a refrigeration cycle apparatus according to some embodiments is shown;

[0045] Figure 7 A cross-sectional view of the gas manifold in a heat exchanger according to some embodiments is shown;

[0046] Figure 8 A diagram is shown of the dispenser according to the first embodiment in a decomposed tiling state;

[0047] Figure 9 A schematic diagram of a flow path forming plate in a distributor according to a first embodiment is shown;

[0048] Figure 10 A diagram is shown of the dispenser according to the second embodiment in a decomposed tiling state;

[0049] Figure 11 and Figure 12 A schematic diagram of the branch flow path in the distributor according to the second embodiment is shown;

[0050] Figure 13 A perspective view of the dispenser according to the third embodiment in an exploded state is shown;

[0051] Figure 14 A diagram is shown of the dispenser according to the fourth embodiment in a decomposed tiling state;

[0052] Figure 15 A schematic diagram of the flow path forming plate in the distributor according to the third and fourth embodiments is shown;

[0053] Figure 16 A diagram is shown of the dispenser according to the fifth embodiment in a decomposed tiling state;

[0054] Figure 17 A schematic diagram of a flow path forming plate in a distributor according to a sixth embodiment is shown;

[0055] Figure 18 A diagram is shown of the dispenser according to the seventh embodiment in a decomposed tiling state;

[0056] Figure 19 A perspective view of the inflow plate in the dispenser according to the seventh embodiment is shown;

[0057] Figure 20 A top view of the dispenser according to the eighth embodiment is shown;

[0058] Figure 21 A graph showing the relationship between heat exchanger height and air velocity / refrigerant flow rate is provided.

[0059] Figure 22A partial view of a heat exchanger according to some embodiments is shown.

[0060] In the above figures, 100 is the outdoor unit; 111 is the compressor; 112 is the outdoor heat exchanger; 113 is the four-way valve; 114 is the outdoor throttling device; 115 is the liquid receiver; 116 is the outdoor fan; 200 is the indoor unit; 211 is the indoor heat exchanger; 212 is the indoor throttling device; 213 is the indoor fan; 300 is the heat exchanger; 310 is the heat exchange tube; 310a is the hole; 320 is the fin; 330 is the gas manifold; 331 is the confluence flow path; 340 is the heat exchanger body; 400 is the distributor; 410 is the inflow plate; 411 is the inflow section; 420 is the circulation connecting plate; 421 is the inflow extension section; 422 is the circulation connecting section; 423 is the branch port; 430 is the flow path forming plate; 431 is the loop body section; 431a is the first part; 43 1b. Second part; 431c. Third part; 431d. Fourth part; 4311. Loop inlet; 4312. Neck; 432. Partition; 433. First loop section; 433a. First disconnection; 434. Second loop section; 434a. Second disconnection; 434b. First flow path section; 440. Diverter plate; 441. Flow section; 450. Outlet plate; 451. Outlet; 460. Heat exchanger tube mounting plate; 461. Heat exchanger tube insertion section; 470. Branch inlet plate; 471. Branch flow path; 472. Branch inlet; 472a. First branch inlet; 472b. Second branch inlet; 473. Branch section; 474. Partition; 510. Fan; 600. Diverter; 610. Capillary tube. Detailed Implementation

[0061] To make the objectives and implementation methods of this application clearer, the exemplary implementation methods of this application will be clearly and completely described below with reference to the accompanying drawings of the exemplary embodiments of this application. Obviously, the exemplary embodiments described are only some embodiments of this application, and not all embodiments.

[0062] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0063] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0064] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0065] <Structure of the Refrigeration Cycle Unit>

[0066] Reference Figure 1 The refrigeration cycle apparatus according to the embodiments of this application includes: an outdoor unit 100, located in an outdoor space, for performing heat exchange between a refrigerant and outdoor air; and an indoor unit 200, located in an indoor space, for performing heat exchange between a refrigerant and indoor air.

[0067] Figure 1 The demonstration uses a multi-split air conditioner as an example, in which multiple indoor units 200 are used. However, the refrigeration cycle device of this application is also applicable to the case of a single indoor unit 200.

[0068] Reference Figure 2 The outdoor unit 100 includes: a compressor 111 for compressing refrigerant; an outdoor heat exchanger 112 for performing heat exchange between outdoor air and refrigerant; a four-way valve 113 for selectively guiding the refrigerant compressed by the compressor 111 to the outdoor heat exchanger 112 or the indoor unit 200 according to the heating mode or cooling mode; an outdoor throttling device 114 for reducing the pressure of the refrigerant guided to the outdoor heat exchanger 112 in the heating mode; and a liquid receiver 115 for preventing unevaporated liquid refrigerant from flowing to the compressor 111.

[0069] When the compressor 111 is powered on, it uses the rotational force of the compressor motor (not shown) to compress the low-pressure gaseous refrigerant to a high pressure.

[0070] In cooling mode, the four-way valve 113 guides the refrigerant compressed in the compressor 111 to the outdoor heat exchanger 112, and in heating mode, it guides the refrigerant compressed in the compressor 111 to the indoor unit 200.

[0071] In cooling mode, the outdoor heat exchanger 112 condenses the refrigerant compressed by the compressor 111, and in heating mode, it evaporates the refrigerant depressurized by the indoor unit 200.

[0072] Outdoor fan 116 blows outdoor air to outdoor heat exchanger 112.

[0073] The outdoor throttling device 114 reduces the pressure of the refrigerant by throttling it. When the refrigerant passes through a narrow passage, its pressure decreases without heat exchange with the outside. Specifically, the outdoor throttling device 114 can be an expansion valve or a capillary tube, etc.

[0074] The indoor unit 200 includes: an indoor heat exchanger 211 that performs heat exchange between refrigerant and indoor air; and an indoor throttling device 212 that reduces the pressure of the refrigerant supplied to the indoor heat exchanger 211 in cooling mode.

[0075] Indoor heat exchanger 211 evaporates the refrigerant in cooling mode and condenses the high-pressure gaseous refrigerant in heating mode.

[0076] The flow of refrigerant in the refrigeration cycle device in either cooling or heating mode will be described below.

[0077] When the refrigeration cycle unit operates in cooling mode, the compressor 111 of the outdoor unit 100 compresses the refrigerant to a high pressure. As the refrigerant is compressed, its pressure and temperature increase.

[0078] Compressed refrigerant is guided to outdoor heat exchanger 112 via four-way valve 113. The refrigerant condenses in outdoor heat exchanger 112, and heat exchange occurs between the refrigerant and outdoor air during this process. Specifically, the refrigerant changes from a gaseous state to a liquid state.

[0079] After passing through the outdoor throttling device 124, the condensed refrigerant is supplied to the indoor unit 200.

[0080] The refrigerant supplied to the indoor unit 200 is depressurized by the indoor throttling device 212, and at the same time the refrigerant becomes a low-temperature, low-pressure, two-phase refrigerant.

[0081] The depressurized refrigerant is evaporated through the indoor heat exchanger 222, and heat exchange between the refrigerant and the indoor air is performed simultaneously during the evaporation of the refrigerant. Specifically, the refrigerant changes to a gaseous state.

[0082] The evaporated gaseous refrigerant is supplied to the outdoor unit 100 via the indoor heat exchanger 222, and then to the receiver 115 via the four-way valve 113. In the receiver 115, the refrigerant is separated into unevaporated liquid refrigerant and evaporated gaseous refrigerant, and the gaseous refrigerant is supplied to the compressor 111 again, completing one refrigerant cycle.

[0083] As described above, in cooling mode, the refrigeration cycle device can use the heat exchange between the refrigerant generated in the indoor heat exchanger 211 and the indoor air to cool the indoor air.

[0084] When the refrigeration cycle unit is in heating mode, the refrigerant is compressed to high pressure by the compressor 111 of the outdoor unit 100, and the temperature of the refrigerant increases with the pressure of the refrigerant.

[0085] After passing through the four-way valve 113, the compressed refrigerant is guided to the indoor unit 200.

[0086] The refrigerant is condensed by the indoor heat exchanger 211, and heat exchange occurs between the refrigerant and the indoor air during the condensation process. Specifically, the refrigerant changes from a gaseous state to a liquid state.

[0087] After passing through the indoor heat exchanger 211, the condensed refrigerant is supplied to the outdoor unit 100 again.

[0088] The refrigerant supplied to the outdoor unit 100 is depressurized by the outdoor throttling device 114, and at the same time the refrigerant becomes a low-temperature, low-pressure, two-phase state.

[0089] The depressurized refrigerant is evaporated through the outdoor heat exchanger 112, and heat exchange occurs between the refrigerant and the outdoor air during the evaporation process. Specifically, the refrigerant changes to a gaseous state.

[0090] The gaseous refrigerant evaporated by the outdoor heat exchanger 112 is supplied to the receiver 115 via the four-way valve 113. In the receiver 115, the refrigerant is separated into unevaporated liquid refrigerant and evaporated gaseous refrigerant, and the gaseous refrigerant is supplied to the compressor 111 again to complete one refrigerant cycle.

[0091] As described above, in heating mode, the refrigeration cycle device can use the heat exchange between the refrigerant generated in the indoor heat exchanger 211 and the indoor air to heat the indoor air.

[0092] In this application, the outdoor heat exchanger 112 and the indoor heat exchanger 211 are collectively referred to as heat exchanger 300. The outdoor fan 116 and the indoor fan 213 are collectively referred to as fan 510. The outdoor throttling device 114 and the indoor throttling device 212 are collectively referred to as throttling device.

[0093] Figure 3 The demonstration uses a top-discharge outdoor unit as an example, where the fan 510 is located above the heat exchanger 300. Figure 3 The middle arrow indicates the airflow direction. When the fan 510 is running, air enters the outdoor unit from the lower side, exchanges heat with the heat exchanger 300, and then flows out from the top of the outdoor unit.

[0094] Multiple heat exchange tubes 310 (which will be described later) extend from the end of the heat exchanger 300 from top to bottom, serving as the inlet and outlet of the refrigerant.

[0095] When heat exchanger 300 is used as an evaporator, the refrigerant entering the evaporator is a two-phase refrigerant that has been throttled by the throttling device. However, in large spaces or when the flow rate decreases, phase separation can occur in the two-phase refrigerant, leading to uneven distribution. This is especially true for... Figure 3 The outdoor unit shown is Figure 3 The heat exchanger 300 is very large and tall, and there are a large number of heat exchange tubes 310 in the vertical direction. Therefore, this type of refrigeration cycle device is more prone to uneven distribution problems.

[0096] The following section will provide a detailed description of this application in conjunction with the structure of the heat exchanger 300.

[0097] <Structure of Heat Exchanger 300>

[0098] Reference Figure 4 to Figure 7 The heat exchanger 300 includes a heat exchanger body 340. The heat exchanger body 340 has a plurality of heat exchange tubes 310 and fins 320.

[0099] Heat exchange tube 310, on which refrigerant flows; fins 320, connected to heat exchange tube 310, increase the heat exchange efficiency between refrigerant and air by increasing the surface area of ​​heat exchange tube 310.

[0100] The heat exchange tube 310 can be a flat tube or a round tube.

[0101] When the heat exchange tube 310 is a circular tube, the heat exchanger 300 is a through-type finned heat exchanger. Viewed from the side of the heat exchanger 300, the heat exchange tube 300 extends in an "S" shape from top to bottom. The heat exchange tube 310 passes through the fins 320.

[0102] When the heat exchange tube 310 is a flat tube, the heat exchanger 300 is a microchannel heat exchanger. Multiple flat tubes are arranged at intervals in the first direction (vertical direction Z). Fins 320 are connected between the flat tubes.

[0103] The following explanation uses a microchannel heat exchanger as an example: the heat exchange tube 310 can be made of aluminum, and the fins 320 can be made of aluminum. The heat exchange tube 310 and the fins 320 are connected by welding.

[0104] The heat exchange tube 310 is a porous tube with multiple holes 310a that form a refrigerant flow path. The refrigerant exchanges heat with the air as it flows through each hole 310a of the heat exchange tube 310. The multiple holes 310a are arranged inside the heat exchange tube 310 along the air flow direction relative to the heat exchanger body 340.

[0105] At both ends of the heat exchanger body 340, multiple heat exchange tubes 310 extend relative to the fins 320 for connection to the refrigerant system.

[0106] The heat exchanger 300 includes a pair of manifolds connected to both ends of the heat exchanger body 340, and the manifolds are respectively connected to the extended heat exchange tubes 310.

[0107] One manifold is a distributor 400 through which a two-phase refrigerant (gas and liquid) flows. The other manifold is a gas manifold 330 through which a gaseous refrigerant flows. A distributor 600 with multiple capillary tubes 610 is connected to the distributor 400.

[0108] The refrigerant needs to be distributed into multiple heat exchange tubes 310 of the heat exchanger 300. If the refrigerant entering the heat exchange tubes 310 is not evenly distributed, it will affect the heat exchange efficiency of the heat exchanger 300.

[0109] The distributor 400 is connected to the heat exchange tube 310 to ensure that the refrigerant distributed into each heat exchange tube 310 of the heat exchanger 300 is basically the same, so as to maximize the efficiency of the heat exchanger 300.

[0110] When heat exchanger 300 is used as a condenser, the refrigerant entering the condenser is a superheated gas compressed by compressor 111. Therefore, the refrigerant can generally be evenly distributed at the condenser inlet. In other words, when the end of heat exchanger 300 connected to the four-way valve 113 is used as the inlet, there is usually no uneven distribution. Therefore, a conventional gas manifold 330 can be installed at this end of heat exchanger 300, and the distributor 400 is only installed at the end of heat exchanger 300 connected to the throttling device. In other embodiments, the gas manifold 330 can also adopt a distributor structure.

[0111] The distributor 400 is provided with a refrigerant inlet section as a refrigerant inlet and multiple refrigerant outlet sections as refrigerant outlets.

[0112] Reference Figure 7 The gas manifold 330 can be a closed cylindrical or rectangular tube. The cavity inside the gas manifold 330 forms a confluence flow path 331. Multiple heat exchange tubes 310 are connected to the inflow side of the confluence flow path 331. A refrigerant piping is connected to the outflow side of the confluence flow path 331.

[0113] The gas manifold 330 has multiple refrigerant inlet sections and one or more refrigerant outlet sections. A capillary tube 610 is connected to the refrigerant inlet section of the distributor 400, and refrigerant piping for the refrigerant system is connected to the refrigerant outlet section of the gas manifold 330. Heat exchange tubes 310 are connected to the refrigerant outlet section of the distributor 400 and the refrigerant inlet section of the gas manifold 330.

[0114] When the heat exchanger 300 functions as an evaporator, the refrigerant flows into the distributor 400 via the refrigerant inlet and is divided, then flows out to the multiple heat exchange tubes 310 via multiple refrigerant outlets. The refrigerant exchanges heat with the air driven by the fan 510 within the multiple heat exchange tubes 310. The refrigerant flowing in the multiple heat exchange tubes 310 flows into the gas manifold 330 via the multiple refrigerant inlets and merges, then flows out to the refrigerant piping via the refrigerant outlets.

[0115] In addition, when the heat exchanger 300 functions as a condenser, the refrigerant flows in the opposite direction to this flow.

[0116] <Structure of Distributor 400>

[0117] The structure of the distributor 400 will be described in detail below.

[0118] First, let's take the distributor 400, which is a stacked distributor, as an example for explanation.

[0119] Reference Figure 13 The distributor 400 is composed of multiple layers of plates. In this application, the length direction of the plates is defined as the first direction Z, the direction of plate stacking orthogonal to the first direction (which is also the direction in which the refrigerant flows into the heat exchange tube 310) is defined as the second direction X, and the direction orthogonal to both the first and second directions X is defined as the third direction Y. The distributor 400 of this embodiment is arranged vertically in the first direction Z, horizontally in the second direction X, and horizontally in the third direction Y. Therefore, in the following description, the first direction Z can be converted to the vertical direction, the second direction X to the horizontal direction, and the third direction Y to the horizontal direction.

[0120] The following description uses the example of the refrigerant flow direction at distributor 400 when the heat exchanger is used as an evaporator.

[0121] Reference Figure 10 The multi-layer board includes an inflow board 410. The inflow board 410 is a rectangular board with a longer vertical dimension (Z). In the inflow board 410, the board surface is arranged along the vertical dimension (Z) and the horizontal dimension (Y).

[0122] The inflow plate 410 has a through hole extending in the front-to-back direction X to form an inlet flow path 411. The inlet flow path 411 corresponds to the refrigerant inflow section of the distributor 400.

[0123] The inflow plate 410 may include one or multiple plates stacked together.

[0124] The inlet flow path 411 has a circular cross-section and can be connected to the capillary tube 610 (or refrigerant piping). The inlet flow path 411 can be directly connected to the capillary tube 610 (or refrigerant piping) by welding. Alternatively, a pipe fitting can be connected to the inlet flow path 411 and connected to the capillary tube 610 through the pipe fitting.

[0125] It should be noted that the flow path cross-section here refers to the cross-section obtained by cutting off the flow path orthogonally to the refrigerant flow direction. The refrigerant flow direction refers to the direction in which the refrigerant flows within the inlet flow path 411.

[0126] <Circulating Connecting Plate 420>

[0127] The multi-layer board includes a circulating connecting plate 420. The circulating connecting plate 420 is a rectangular plate with a longer vertical Z-direction. In the circulating connecting plate 420, its vertical Z-direction length and horizontal Y-direction length are approximately the same as the vertical Z-direction length and horizontal Y-direction length of the inflow plate 410, and the plate surface is arranged along the vertical Z-direction and horizontal Y-direction.

[0128] The circulating connecting plate 420 is provided with a through hole. The through hole forms an inflow extension 421, which communicates with the inflow portion of the inflow plate 410.

[0129] The cross-sectional shape of the inflow extension 421 can be the same as that of the inflow section 411. The inflow extension 421 can serve as an extension of the inflow section 411, and function to allow refrigerant to flow in.

[0130] The circulating connecting plate 420 is provided with a through groove. The through groove forms a circulating connecting part 422, which is part of the circulating flow path described later, and is used to connect the disconnection point of the main loop part 431.

[0131] The loop connecting part 422 may be in the shape of a rectangular groove, and its flow path cross-sectional shape may be the same as that of the loop main body part 431 described later.

[0132] It should be noted that the flow path cross-section here refers to the cross-section obtained by cutting off the flow path orthogonally to the refrigerant flow direction. The refrigerant flow direction refers to the direction in which the refrigerant flows within the circulation connection section 422.

[0133] <Flow path forming plate 430>

[0134] The multilayer board includes a flow path forming plate 430. The flow path forming plate 430 is a rectangular plate with a longer vertical Z-direction. In the flow path forming plate 430, its vertical Z-direction length and horizontal Y-direction length are approximately the same as the vertical Z-direction length and horizontal Y-direction length of the inflow plate 410, and the plate surface is arranged along the vertical Z-direction and horizontal Y-direction.

[0135] The flow path forming plate 430 is provided with a through groove, which forms a loop body 431, allowing the refrigerant to circulate. The loop body 431 is a discontinuous ring.

[0136] The break point of the loop body 431, i.e., the partition 432, corresponds to the loop connection portion 422 of the loop connection plate 420. The loop connection portion 422 connects the loop body 431 at the break point.

[0137] On the projection of the flow path forming plate 430, the two ends of the circulation connecting portion 422 are respectively connected to the two ends of the loop body portion 431, and the middle part of the circulation connecting portion 422 is located between the two ends of the loop body portion 431.

[0138] The main loop section 431 and the circulation connecting section 422 are connected to form a circulation flow path. The refrigerant circulates within the circulation flow path, which allows the gas and liquid phases of the refrigerant to mix evenly.

[0139] The main body 431 of the loop is a broken ring when viewed from the front. The outer and inner peripheries of the main body 431 are rectangular in shape with a longer vertical (Z) length. The main body 431 has a first portion 431a, a second portion 431b, a third portion 431c, and a fourth portion 431d. The first portion 431a is located on one side biased towards the left-right (Y) direction. Figure 9 The second part 431b is located on the right side of the middle. The second part 431b is positioned on the other side, slightly offset to the left and right in the Y direction. Figure 9 The first part 431a and the second part 431b have lengths in the vertical direction Z. The first part 431a (or the second part 431b) may communicate with the inflow part 411.

[0140] The third part 431c of the main body of the loop connects to the upper part of the first part 431a and the second part 431b. The fourth part 431d connects to the lower part of the first part 431a and the second part 431b.

[0141] After the refrigerant enters the circulation path through the inlet section 411, it forms a self-circulation by relying on the impact of the refrigerant.

[0142] The part of the loop body 431 that is connected to the inflow part 411 is defined as the loop inflow part 4311.

[0143] If the loop inlet 4311 is located on the third part 431c or the fourth part 431d, and the third part 431c or the fourth part 431d extends horizontally, the refrigerant will flow in the left and right directions after entering the loop body 431, making it impossible for the refrigerant to circulate in a loop.

[0144] Therefore, in this application, the loop inlet 4311 can be provided on the first part 431a or the second part 431b of the loop main body 431. The first part 431a and the second part 431b extend vertically, and the refrigerant flows downward under the action of gravity after entering the loop main body 431.

[0145] <Diverter plate 440>

[0146] The multi-layer panel includes a diversion plate 440. The diversion plate 440 is a rectangular plate with a longer vertical length (Z) in the vertical direction. In the diversion plate 440, its vertical length (Z) and horizontal length (Y) are approximately the same as the vertical length (Z) and horizontal length (Y) of the inflow plate 410, and the plate surface is arranged along the vertical length (Z) and horizontal length (Y).

[0147] The distributor plate 440 is provided with multiple through slots. The multiple through slots form multiple flow sections 441. The flow sections 441 are connected to the main loop section 431 and are used to divide the refrigerant in the circulation path into multiple outflow paths.

[0148] The connecting part 441 can be connected to the heat exchange tube 310, so that the refrigerant in the circulation path can flow to different heat exchange tubes 310 through multiple flow parts 441 respectively.

[0149] In this application, static pressure diversion is used to achieve refrigerant self-balancing at each heat exchange tube 310. Since the refrigerant flow direction in the circulation path is perpendicular to the direction of refrigerant flow towards the flow section 441 of the diversion plate 440, the refrigerant flow has no kinetic energy impact on each flow section 441, thus avoiding the influence of dynamic pressure impact. The flow rate of each downstream branch depends entirely on the flow resistance of the refrigerant within the downstream heat exchange tube 310. When the refrigerant flow rate in the heat exchange tube 310 is low, its flow resistance is also low, and the downstream suction will automatically increase the flow rate, thereby achieving refrigerant self-balancing at the heat exchange tube 310.

[0150] In addition, since the number of flow sections 441 on the diverter plate 440 is set more flexibly, the number of end branches of the distributor 400 can be even or odd, avoiding the problem in the prior art that the number of branches of the distributor 400 can only be even, which limits its scope of use.

[0151] Viewed from the front, the flow section 441 is rectangular. The length of the flow section 441 in the left-right direction Y is approximately the same as the width of the circulation path in the left-right direction Y. The length of the flow section 441 in the vertical direction Z is approximately the same as the thickness of the outflow section 451 of the outflow plate 450 described later in the vertical direction Z.

[0152] According to an embodiment of this application, when projected onto the surface of the flow path forming plate 430, the positions of the loop inflow portion 4311 and the flow portion 441 are staggered, which can prevent some of the refrigerant flowing from the loop inflow portion 4311 into the loop body portion 431 from flowing directly to the flow portion 441 without going through circulation, thus ensuring that more refrigerant circulates in the circulation flow path.

[0153] According to an embodiment of this application, projected onto the surface of the flow path forming plate 430, one of the loop inflow portion 4311 and the flow portion 441 is located in the first portion 431a of the loop body portion 431, and the other is located in the second portion 431b of the loop body portion 431.

[0154] Assume that the first part 431a of the main loop 431 is closer to the windward side of the heat exchanger 300 than the second part 431b.

[0155] The flow section 441 can be connected to the first part 431a of the main loop section 431. In this way, when the refrigerant flows through the flow section 441 to the heat exchange tube 310, it will first flow into the hole 310a of the heat exchange tube 310 near the windward side. As a result, a larger refrigerant flow rate is obtained in the hole 310a of the heat exchange tube 310 near the windward side.

[0156] Due to the heat exchange between the air and the refrigerant inside the heat exchange tube 310, the air temperature gradually decreases as it flows from the windward end to the leeward end of the heat exchange tube 310 (when the heat exchanger is an evaporator). The refrigerant flow rate near the windward side of the heat exchange tube 310 is higher, which can accommodate the energy of the air in the windward direction, resulting in higher heat exchange efficiency for the heat exchanger 300.

[0157] <Outflow plate 450>

[0158] The multi-layer board includes an outlet board 450. The outlet board 450 is a rectangular board with a longer vertical length (Z) in the vertical direction. In the outlet board 450, its vertical length (Z) and horizontal length (Y) are approximately the same as the vertical length (Z) and horizontal length (Y) of the inflow board 410, and the board surface is arranged along the vertical length (Z) and horizontal length (Y).

[0159] The outlet plate 450 has multiple through slots. These through slots form an outlet section 451. The outlet section 451 is connected to the flow section 441 of the flow divider plate 440. The outlet section 451 is connected to the heat exchange tube 310 on the heat exchange tube mounting plate 460 (described later). Thus, the outlet section 451 connects the flow section 441 and the heat exchange tube 310.

[0160] The cross-sectional shape of the outflow section 451 can be the same as that of the heat exchange tube 310.

[0161] It should be noted that the flow path cross-section here refers to the cross-section obtained by cutting off the flow path orthogonally to the refrigerant flow direction. The refrigerant flow direction refers to the direction in which the refrigerant flows within the outflow section 451.

[0162] In other embodiments, the outflow plate 450 may be omitted, i.e., the distributor 400 does not include the outflow plate 450.

[0163] The connecting portion 441 of the flow divider 440 is directly connected to the heat exchange tube 310 on the heat exchange tube mounting plate 460, which will be described later.

[0164] <Heat exchanger tube mounting plate 460>

[0165] The multi-layer plate body includes a heat exchanger tube mounting plate 460. The heat exchanger tube mounting plate 460 is a rectangular plate with a longer vertical length (Z) in the vertical direction. The vertical length (Z) and horizontal length (Y) of the heat exchanger tube mounting plate 460 are approximately the same as the vertical length (Z) and horizontal length (Y) of the inflow plate 410, and the plate surface is arranged along the vertical length (Z) and horizontal length (Y).

[0166] The heat exchanger tube mounting plate 460 is provided with multiple through slots to form multiple heat exchanger tube insertion parts 461. The heat exchanger tube insertion parts 461 are provided corresponding to the outflow parts 451 of the outflow plate 440.

[0167] The heat exchange tube 310 can be installed from the heat exchange tube insertion part 461 to the heat exchange tube mounting plate 460 and then connected to the outflow part 451.

[0168] The heat exchange tube 310 can be connected to the heat exchange tube mounting plate 460 by welding.

[0169] In other embodiments, the heat exchanger mounting plate 460 may be omitted, meaning the distributor 400 does not include the heat exchanger mounting plate 460. The heat exchanger 310 is directly connected to the outlet plate 450 or the flow divider 440.

[0170] In some embodiments, refer to Figure 10 To increase the number of branches in the distributor, a branch flow path plate 470 can be set between the branch plate 440 and the outlet plate 450.

[0171] <Branch Flow Board 470>

[0172] The multi-layer board includes a branch flow path board 470. The branch flow path board 470 is a rectangular board with a longer vertical Z-direction. In the branch flow path board 470, its vertical Z-direction length and horizontal Y-direction length are approximately the same as the vertical Z-direction length and horizontal Y-direction length of the inflow board 410, and the board surface is arranged along the vertical Z-direction and horizontal Y-direction.

[0173] Multiple through slots extending in the front-to-back direction X are provided on the branch flow path plate 470 to form multiple branch flow paths 471.

[0174] Combination Figure 11 and Figure 12 The branch flow path 471 has a branch inflow section 472 and at least two branch sections 473.

[0175] The branch inflow portion 472 of the branch flow path 471 is connected to the flow portion 441 of the diverter plate 440. The branch portion 473 of the branch flow path 471 is connected to the outflow portion 451 of the outflow plate 450.

[0176] In an embodiment of this application, the branch inflow portion 472 includes a first branch inflow portion 472a and a second branch inflow portion 472b separated by a partition portion 474. The first branch inflow portion 472a and the second branch inflow portion 472b are arranged in the left-right direction Y and are symmetrical with respect to the partition portion 474.

[0177] Projected onto a plane orthogonal to the front-rear direction X, the first branch inflow portion 472a and the second branch inflow portion 472b have the same overlapping area with the flow portion 441 of the diverter plate 440.

[0178] The length w of the first branch inflow section 472a in the left-right direction Y is not greater than the length u of the branch section 473 in the up-down direction.

[0179] Since the length w of the first branch inlet 472a in the left-right direction Y is relatively small, the refrigerant flows in the first branch inlet 472a and then flows in the up-down direction X.

[0180] The width w of the second branch inflow section 472b in the left-right direction Y is not greater than the length u of the branch section 473 in the up-down direction.

[0181] Because the width w of the second branch inlet 472b in the left-right direction Y is relatively small, the refrigerant flows in the second branch inlet 472b and then flows in the up-down direction X.

[0182] This application provides a partition 474 at the branch inflow section 472, and the first branch inflow section 472a and the second branch inflow section 472b are arranged in a horizontal direction, which can prevent the flow deviation caused by gas-liquid stratification in the capillary tube 610.

[0183] The branch section 473 of the branch flow path 471 extends in a straight line along the left-right direction Y. The shape of the branch section 473 may be the same as that of the heat exchange tube 310, and it is connected to the outlet section 451 of the outlet plate 450.

[0184] For each branch flow path 471, two branch sections 473 are located on the upper and lower sides of the branch inflow section 472, respectively.

[0185] <Distributor 400 with spray structure>

[0186] In this embodiment, the description focuses only on the differences from the above embodiments, and the parts that are the same as those in the above embodiments will not be repeated.

[0187] In this embodiment, a spraying structure is provided on the main body 431 of the loop:

[0188] Reference Figure 13 to Figure 15 The part of the loop body 431 that is connected to the inflow part 411 of the inflow plate 410 is the loop inflow part 4311.

[0189] The main body of the loop is provided with a constricted neck 4312, which has a reduced flow path cross-section. The constricted neck 4312 is connected to the inflow part of the loop 4311.

[0190] The flow path cross-section here refers to the cross-section obtained by cutting off the flow path orthogonally to the refrigerant flow direction. The refrigerant flow direction refers to the direction in which the refrigerant flows within the neck 4312.

[0191] Since the inflow cross section of the constriction neck 4312 is smaller than that of the loop inflow section 4311, that is, the length of the constriction neck 4312 in the left-right direction Y is smaller than that of the loop inflow section 4311.

[0192] The neck 4312 is located downstream of the loop inlet 4311, where downstream is referenced to the refrigerant flow direction. The refrigerant flowing into the loop inlet 4311 continues to flow into the circulation path with increased flow velocity in the neck 4312, thus promoting refrigerant circulation in the circulation path.

[0193] The main body of the loop 431 may include a first loop segment 433. The first loop segment 433 is a broken loop.

[0194] The loop inflow section 4311 is located at one end of the first loop segment 433. The other end of the first loop segment 433 is the first disconnection end 433a.

[0195] The main body of the loop 431 may include a second loop segment 434. One end of the second loop segment 434 is connected to the locking part 431b; the other end of the second loop segment 434 is located between the two ends of the first loop segment 433 and is defined as the second disconnection end 434a.

[0196] The first disconnection end 433a and the second disconnection end 434a form the disconnection end of the loop body portion 431. The portion of the flow path forming plate 430 located between the first disconnection end 433a and the second disconnection end 434a is the partition portion 432.

[0197] The loop connecting part 422 is provided corresponding to the partition part 432.

[0198] According to an embodiment of this application, the loop inflow portion 4311 is located below the first disconnection end 433a, and the neck 4312 is located below the loop inflow portion 4311.

[0199] The second ring section 434 includes a first flow path portion 434b. The first flow path portion 434b is connected to the constriction neck 4312. The first flow path portion 434b extends in a direction perpendicular to the direction of gravity, i.e., the first flow path portion 434b is horizontal. Alternatively, the first flow path portion 434b gradually rises in the direction of extension away from the locking portion 431b.

[0200] The refrigerant at the neck 4312 will continue to flow downwards in the first ring section 433 due to gravity, and will not enter the first flow path section 434b of the second ring section 434.

[0201] <Another embodiment of the circulating connecting plate 420>

[0202] In this embodiment, the description focuses only on the differences from the above embodiments, and the parts that are the same as those in the above embodiments will not be repeated.

[0203] Reference Figure 16 and Figure 17 The circulation connecting plate 420 is disposed between the flow path forming plate 430 and the flow divider plate 440.

[0204] The loop connecting plate 420 is provided with a through groove. The through groove forms a loop connecting part 422, which is used to connect the disconnection point of the loop main body part 431.

[0205] The circulating connecting plate 420 is provided with multiple through holes. The multiple through holes form a diversion port 423, which is connected to the flow section 441 of the diversion plate 440.

[0206] <Another embodiment of the loop connecting part 422>

[0207] In this embodiment, the description focuses only on the differences from the above embodiments, and the parts that are the same as those in the above embodiments will not be repeated.

[0208] Reference Figure 18 and Figure 19The distributor 400 does not have a circulation plate 420, but instead has a circulation connecting part 422 on the inflow plate 410.

[0209] A groove is provided on the side of the inflow plate 410 facing the flow path forming plate 430, and the groove forms a circulation connection portion 422.

[0210] By setting the circulation connection part 422 in the form of a groove located in the inflow plate 410, a plate (circulation flow plate 420) is omitted while achieving the connection of the loop body part 431 by the circulation connection part 422.

[0211] In other embodiments, the circulation connection portion 422 may also be disposed on the diverter plate 440.

[0212] The flow divider plate 440 has a groove on the side facing the flow path forming plate 430, which forms a circulation connection portion 422.

[0213] By setting the circulation connection part 422 in the form of a groove in the diverter plate 440, a plate (circulation flow plate 420) is omitted while still connecting the loop body part 431 by the circulation connection part 422.

[0214] In the above embodiments, the dispenser 400 is rectangular. However, in other embodiments, refer to... Figure 20 The dispenser 400 can also be made into a cylindrical shape. The outer surface of each plate in the plate body is an arc surface that forms a cylindrical shape.

[0215] Therefore, this application does not limit the shape of the dispenser.

[0216] Next, we will take the distributor 400, which is an integrated structure, as an example for explanation.

[0217] In this embodiment, the distributor 400 is made using a mold. A first mold with the same shape as the distribution flow path is placed into a second mold that corresponds to the shape of the distributor 400, and then molten aluminum is poured into the second mold; after the aluminum solidifies, the first mold is melted and flows out.

[0218] In this embodiment, the dispenser 400 is a one-piece structure, and is the same as the dispenser 400 in the above embodiment, except that it is composed of multiple stacked plates.

[0219] For top-discharge refrigeration cycle devices, refer to Figure 3 and Figure 21 The fan 510 is located above the heat exchanger 300, which causes the wind speed at the upper part of the heat exchanger 300 that is closer to the fan 510 to be higher than the wind speed at the lower part that is farther away from the fan 510.

[0220] As the height of the heat exchanger 300 increases, the air velocity on the heat exchanger 300 also tends to increase. Only when the refrigerant flow rate and air velocity distribution on the heat exchanger 300 are matched can the heat exchange efficiency of the heat exchanger 300 be maximized.

[0221] In the embodiments of this application, reference is made to Figure 22 In the heat exchanger 300, the distributor 400 has at least one first distributor 400_1, at least one second distributor 400_2, ..., at least one Nth distributor 400_n distributed from top to bottom;

[0222] The number of heat exchange tubes 310 connected to the first distributor 400_1, the second distributor 400_2, ..., the Nth distributor 400_n increases progressively.

[0223] In this application, the number of heat exchange tubes 310 connected to the distributor 400 is defined as the number of outlets of the distributor.

[0224] For example, the first distributor 400_1 is a four-outlet distributor connected to four heat exchange tubes 310, the second distributor 400_2 is an eight-outlet distributor connected to eight heat exchange tubes 310, and the Nth distributor 400_n is a sixteen-outlet distributor connected to sixteen heat exchange tubes 310.

[0225] From top to bottom, the number of heat exchange tubes 310 connected to the distributor 400 increases, which makes the refrigerant flow rate of each capillary tube 610 at the primary branch point of the distributor 600 similar, the refrigerant dryness at the heat exchanger outlet similar, and the heat exchanger heat exchange efficiency optimal.

[0226] As described above, according to the embodiments of this application, the distributor 400 includes an inflow plate 410 with an inflow portion 411 for refrigerant to flow into it; a flow path forming plate 430 with a loop body portion 431 communicating with the inflow portion 411, the loop body portion 431 being a broken loop; a diverting plate 440 with multiple flow portions 441 formed thereon to divert the refrigerant from the loop body portion 431; and a circulation connecting plate 420 disposed between the inflow plate 410 and the flow path forming plate 430, or between the flow path forming plate 430 and the diverting plate 440, the circulation connecting plate 420 having a circulation connecting portion 422 connecting the two broken ends of the loop body portion 431. Thus, the loop body portion 431 and the circulation connecting portion 422 are connected to form a circulation flow path, the refrigerant circulates within the circulation flow path, and is then diverted to each flow portion 441, ensuring uniform refrigerant distribution.

[0227] Additionally, the distributor 400 includes an inflow plate 410 with an inflow portion 411 for refrigerant to flow into it; a flow path forming plate 430 with a loop body portion 431 communicating with the inflow portion 411, the loop body portion 431 being a discontinuous ring; a diverting plate 440 with multiple flow portions 441 forming thereon to divert the refrigerant from the loop body portion 431; and a grooved circulation connecting portion 420 on the inflow plate 410 or the diverting plate 440, connecting the two discontinuous ends of the loop body portion 431. Thus, the loop body portion 431 and the circulation connecting portion 422 are connected to form a circulating flow path, where the refrigerant circulates and is then diverted to each flow portion 441, ensuring uniform refrigerant distribution.

[0228] In addition, a constriction neck 4312 connected to the loop inlet 4311 is provided on the main loop body 431. The locking part 4312 can accelerate the refrigerant and promote the circulation of the refrigerant in the circulation path.

[0229] In some embodiments, the refrigeration cycle device can be a water heater, a refrigeration unit, an air conditioner, a refrigerator, etc. Under any circumstances, the performance of the heat exchanger can be maximized and the heat exchange efficiency can be improved.

[0230] For ease of explanation, the above description has been provided in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. Various modifications and variations can be obtained based on the above teachings. The selection and description of the above embodiments are for the purpose of better explaining the principles and practical applications, thereby enabling those skilled in the art to better utilize the described embodiments and various different variations of embodiments suitable for specific use considerations.

Claims

1. A dispenser, characterized in that, include: An inflow plate having an inflow section for refrigerant to flow in; A flow path forming plate having a loop body portion communicating with the inflow portion, the loop body portion being a discontinuous loop; A flow divider plate is formed thereon, and the refrigerant of the main loop section flows out from the multiple flow sections; A circulation connecting plate is disposed between the inflow plate and the flow path forming plate, or between the flow path forming plate and the flow branching plate. A circulation connecting portion is formed on the circulation connecting plate, which connects the two ends of the loop body that are disconnected.

2. The dispenser according to claim 1, characterized in that, The portion of the main body of the loop that is connected to the inflow portion is the loop inflow portion; The main body of the loop is provided with a neck that reduces the cross-sectional area of ​​the flow path, and the neck is connected to the downstream side of the inflow section of the loop.

3. The dispenser according to claim 2, characterized in that, The two ends of the main body of the loop that are in the disconnected position are the first disconnected end and the second disconnected end, respectively. The main body of the loop includes: The first ring section is a broken ring, with the first broken end and the ring inflow section being the two ends of the first ring section, respectively. The second ring section has one end connected to the constricted neck, and the other end is a second disconnected end located between the two ends of the first ring section.

4. The dispenser according to claim 3, characterized in that, The constriction is located below the loop inflow portion; the portion of the second loop segment connecting the constriction is the first flow path portion; the first flow path portion extends or inclined upward in a direction orthogonal to the first direction away from the constriction.

5. The dispenser according to claim 1, characterized in that, The two ends of the main body of the loop that are in the disconnected position are the first disconnected end and the second disconnected end, respectively; on the projection of the flow path forming plate, the two ends of the loop connecting part coincide with the first disconnected end and the second disconnected end, respectively, and the middle part of the loop connecting part is located between the first disconnected end and the second disconnected end.

6. The dispenser according to claim 1, characterized in that, The main body of the loop has two parts, a first part and a second part, extending along a first direction. The inflow part is connected to the first part and the flow part is connected to the second part.

7. The dispenser according to claim 1, characterized in that, The main body of the loop has two parts, a first part and a second part, extending along a first direction, wherein the first part is close to the windward side of the heat exchanger; the flow section is connected to the first part.

8. The dispenser according to claim 1, characterized in that, The distributor also includes: A branch flow path plate having multiple branch flow paths formed thereon, which branch out the refrigerant flowing in from the flow section. The branch flow path includes a branch inflow section that communicates with the flow section; the branch inflow section includes two branch inflow sections that are spaced apart and arranged in a direction orthogonal to the first direction; The branch flow path includes multiple branch sections for refrigerant to flow out in a branch; the branch sections extend in a straight line along a direction orthogonal to the first direction.

9. A heat exchanger, characterized in that, include: Multiple heat exchange tubes are arranged along the first direction for the flow of refrigerant; and A distributor for distributing refrigerant to multiple heat exchange tubes; The dispenser includes: An inflow plate having an inflow section formed thereon; A flow path forming plate having a loop body portion communicating with the inflow portion, the loop body portion being a discontinuous loop; A flow divider plate is formed thereon having a plurality of flow sections that allow the refrigerant in the main body of the loop to flow out, and the flow sections are connected to the heat exchange tube. The inflow plate or the diversion plate has a circulation connection portion that connects the two ends of the disconnected loop body portion. Preferably, the heat exchanger is connected to multiple distributors; the number of heat exchange tubes connected to the distributors is equal to the number of outlets of the distributors; for multiple distributors with different numbers of outlets, the number of outlets of the distributors increases from top to bottom.

10. A refrigeration cycle device, characterized in that, Includes the heat exchanger of claim 9, wherein the heat exchanger is at least one of an evaporator and a condenser.

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