Air conditioner

Abstract

The utility model discloses an air conditioner, and belongs to the technical field of air treatment. The air conditioner comprises a heat exchanger; the heat exchanger comprises a plurality of heat exchange pipes and collecting pipes. The collecting pipe is used for distributing refrigerants to a plurality of heat exchange pipes and comprises a base body connected with the heat exchange pipes, and a mounting cavity with one side open is formed in the base body; the plurality of partition plates are inserted into the mounting cavity from the open side of the mounting cavity and divide the mounting cavity into a plurality of flow dividing chambers correspondingly communicated with the heat exchange tubes; a plurality of flow dividing holes correspondingly communicated with the flow dividing chamber are formed in the side wall of the injection pipe, and a distribution cavity communicated with the flow dividing holes is formed in the injection pipe; and the inlet pipe is inserted into the injection pipe, a communicating hole is formed in the side wall of the inlet pipe, and the communicating hole is communicated with the distribution cavity. According to the air conditioner, machining and assembling of the collecting pipe are facilitated.

Description

Technical Field

[0001] This application relates to the field of air handling technology, and more particularly to an air conditioner. Background Technology

[0002] The heat exchanger is a crucial component of the heat exchange cycle in an air conditioner. It consists of multiple heat exchange tubes and fins, through which the refrigerant flowing through the heat exchange tubes exchanges heat with the outside air. The fins increase the heat exchange area between the refrigerant and the outside air within the heat exchange tubes.

[0003] Normally, when refrigerant is introduced into multiple heat exchange tubes through the manifold, the refrigerant may be unevenly distributed into the multiple heat exchange tubes due to the tilting of the liquid refrigerant caused by gravity and inertia. Therefore, a distribution structure needs to be designed in the manifold to improve the distribution of refrigerant to the heat exchange tubes.

[0004] Specifically, the manifold has a distribution structure that evenly distributes the refrigerant and a diversion structure that guides the separated refrigerant to the heat exchange tube. The distribution structure and diversion structure are relatively dense and complex, which increases the manufacturing difficulty of the manifold. Utility Model Content

[0005] This application provides an air conditioner that facilitates the processing and assembly of the manifold through its design.

[0006] According to one aspect of this application, an air conditioner includes: a heat exchanger; the heat exchanger includes a plurality of heat exchange tubes and a manifold, the manifold being used to distribute refrigerant to the plurality of heat exchange tubes, the manifold including: a base connected to the heat exchange tubes, the base having an open mounting cavity on one side; a plurality of partition plates inserted into the mounting cavity from the open side and dividing the mounting cavity into a plurality of flow chambers corresponding to and communicating with the heat exchange tubes; an injection pipe connected to the partition plates, the side wall of the injection pipe having a plurality of flow holes corresponding to and communicating with the flow chambers, the injection pipe having a distribution cavity communicating with the flow holes; and an inlet pipe inserted into the injection pipe, the side wall of the inlet pipe having a connecting hole communicating with the distribution cavity.

[0007] When the heat exchanger is used as an evaporator, the manifold allows the refrigerant to enter the distribution chamber from the inlet pipe through the connecting hole, and then flow from the distribution chamber to the distribution chamber through multiple branch holes.

[0008] In this technical solution, the manifold is designed as a structure in which multiple components such as the base, the injection pipe and the inlet pipe are assembled and connected. This facilitates the processing and manufacturing of the manifold and avoids the difficulties in manufacturing and ensuring assembly accuracy when inserting baffles into a pipe body to form a complex flow channel, which is common in the prior art.

[0009] In addition, the injection pipe itself forms a distribution cavity, and the side wall with the diversion hole on the injection pipe serves as a partition wall between the distribution cavity and the diversion chamber. There is no need to use a partition to separate the distribution cavity or to set up a separate partition wall, which simplifies the manufacturing process of the manifold.

[0010] In some embodiments, the partition plate is provided with a notch or slot, and the spray pipe is inserted into the notch or slot.

[0011] In this technical solution, the insertion and connection between the injection pipe and the partition plate facilitates the installation and positioning of the injection pipe.

[0012] In some embodiments, the manifold further includes a cover plate connected to the open side of the base for sealing the mounting cavity, and the cover plate is provided with a clearance hole for the inlet pipe to pass through.

[0013] In this technical solution, the mounting cavity of the substrate is sealed by a cover plate, and the injection pipe is installed in the mounting cavity in the form of a sleeve. The injection pipe does not need to have the function of sealing the mounting cavity. Therefore, the injection pipe is easier to select, which further reduces the manufacturing difficulty of the manifold.

[0014] In some embodiments, a partition plate insertion groove is provided on the inner sidewall of the substrate, and the partition plate is inserted into the partition plate insertion groove.

[0015] In this technical solution, on the one hand, the partition plate insertion groove facilitates the positioning of the partition plate in the installation cavity; on the other hand, the partition plate insertion groove does not penetrate the side wall of the base, which can reduce the impact on the structural strength of the base.

[0016] In some embodiments, the substrate is made of a sheet material, with partition slots machined at opposite ends on one side of the sheet material; the sheet material with the partition slots is bent to form a U-shaped substrate.

[0017] In this technical solution, the substrate can be machined into partition slots through sheet metal cutting and formed into an integral structure through bending, thus realizing the fabrication of the substrate and reducing the processing difficulty of the substrate.

[0018] In some embodiments, the width w of the partition insertion slot gradually decreases along the direction in which the partition plate is inserted into the partition insertion slot.

[0019] This technical solution can reduce the space occupied by the partition plate insertion groove on the substrate, thereby minimizing the impact of the partition plate insertion groove on the structural strength of the substrate.

[0020] In some embodiments, the substrate is provided with an inner arc surface, which is a groove surface that defines the partition plate insertion groove. The outer side of the partition plate is provided with an outwardly convex outer arc surface, and the outer arc surface fits against the inner arc surface in the assembled state.

[0021] In some embodiments, the manifold further includes a distribution baffle, which is inserted into the jet pipe to divide the internal space of the jet pipe into n distribution chambers, where n ≥ 2.

[0022] In this technical solution, one distribution chamber corresponds to one distribution structure with multiple distributions. By dividing the jet pipe into n distribution chambers, one manifold can have n distribution structures, thus expanding the application range of the manifold.

[0023] In some embodiments, the diversion orifice located above the distribution partition is defined as the first diversion orifice, and the inlet pipe is located between the first diversion orifice and the distribution partition in the height direction.

[0024] In this technical solution, the distribution holes within the same distribution structure are all located above the inlet pipe, which allows the refrigerant to flow upward from the inlet pipe and then be distributed to each distribution hole, ensuring the uniformity of the refrigerant.

[0025] In some embodiments, the remaining diversion holes in the diversion holes other than the first diversion hole are defined as second diversion holes;

[0026] The distance from the first diversion hole to the second diversion hole adjacent to it on its upper side is less than the interval between two adjacent second diversion holes.

[0027] In this technical solution, by adjusting the position of the first diversion hole, the inlet pipe can be accommodated between the first diversion hole and the distribution baffle in the height direction, thus avoiding the obstruction of the diversion hole by the inlet pipe.

[0028] In another aspect of this application, an air conditioner includes: a heat exchanger; the heat exchanger includes a plurality of heat exchange tubes and a manifold, the manifold being used to distribute refrigerant to the plurality of heat exchange tubes, the manifold including: a base connected to the heat exchange tubes, the base having an open mounting cavity on one side; a plurality of partition plates inserted into the mounting cavity from the open side, dividing the mounting cavity into a plurality of flow distribution chambers corresponding to and communicating with the heat exchange tubes; an injection pipe connected to the partition plates, the side wall of the injection pipe having a plurality of flow distribution holes corresponding to and communicating with the flow distribution chambers, the injection pipe having a distribution cavity communicating with the flow distribution holes; and an inlet pipe inserted into the injection pipe, the side wall of the inlet pipe having a connecting hole communicating with the distribution cavity.

[0029] In this technical solution, the manifold is designed as a structure in which multiple components such as the base, the injection pipe and the inlet pipe are assembled and connected. This facilitates the processing and manufacturing of the manifold and avoids the difficulties in manufacturing and ensuring assembly accuracy when inserting baffles into a pipe body to form a complex flow channel, which is common in the prior art.

[0030] In addition, the injection pipe itself forms a distribution cavity, and the side wall with the diversion hole on the injection pipe serves as a partition wall between the distribution cavity and the diversion chamber. There is no need to use a partition to separate the distribution cavity or to set up a separate partition wall, which simplifies the manufacturing process of the manifold. Attached Figure Description

[0031] Figure 1 A schematic diagram of a refrigerant system in an air conditioner according to some embodiments is shown;

[0032] Figure 2 A perspective view of a heat exchanger in an air conditioner according to some embodiments is shown;

[0033] Figure 3 A cross-sectional view of the flow splitting principle structure of a manifold according to some embodiments is shown;

[0034] Figure 4 A cross-sectional view of the flow splitting principle structure of the manifold according to some other embodiments is shown;

[0035] Figure 5 A cross-sectional view of a heat exchanger in an air conditioner according to some embodiments is shown;

[0036] Figure 6 It shows Figure 5 A partial schematic diagram of the central flow tube;

[0037] Figure 7 An exploded view of a manifold according to some embodiments is shown;

[0038] Figure 8 A side view of a manifold according to some embodiments is shown;

[0039] Figure 9 A side view of the base is shown according to some embodiments;

[0040] Figure 10 It shows the formation Figure 2 A schematic diagram of the process of the substrate in the manifold of the heat exchanger;

[0041] Figure 11 It shows the formation Figure 2 A schematic diagram of the cutting steps of the substrate in the manifold of the heat exchanger;

[0042] Figure 12 An assembly diagram of the jet pipe in the manifold on the substrate is shown according to some embodiments;

[0043] Figure 13 A perspective view of a manifold according to some embodiments is shown.

[0044] In the above diagrams, 1. Compressor; 2. Four-way valve; 3. Outdoor heat exchanger; 4. Indoor heat exchanger; 5. Throttling device; 6. Flow divider; 61. Capillary tube;

[0045] 100. Heat exchanger; 10. Heat exchange tube; 20. Fin; 30. Manifold; 30a. Refrigerant inlet; 30b. Inflow cavity; 30c. Middle partition wall; 30d. Wall; 31. Manifold body; 311. Substrate; 311a. Inner arc surface; 3111. Substrate wall; 3112. Substrate sidewall; 312. Mounting cavity; 313. Heat exchange tube mounting groove; 314. Cover plate; 3141. Cover wall; 3142. Cover sidewall; 3143. Clearance hole; 31 5. Diversion chamber; 316. Partition plate insertion slot; 3161. Arc; 3162. First straight section; 3163. Second straight section; 32. Partition plate; 321. Notch slot; 33. Injection pipe; 331. Distribution chamber; 332. Diversion hole; 3321. First diversion hole; 3322. Second diversion hole; 333. Inlet pipe mounting slot; 334. Distribution partition plate; 335. Distribution partition plate slot; 34. Inlet pipe; 341. Connecting hole; 40. Gas collection pipe. Detailed Implementation

[0046] 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.

[0047] 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.

[0048] 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.

[0049] 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.

[0050] Reference Figure 1 This section introduces the refrigerant system of air conditioners:

[0051] The refrigerant system includes a compressor 1 for compressing refrigerant; a four-way valve 2 for guiding the refrigerant compressed by the compressor 1 to an outdoor heat exchanger 3 or an indoor heat exchanger 4; an outdoor heat exchanger 3 for condensing the refrigerant introduced into it during cooling and evaporating the refrigerant flowing into it during heating; a throttling device 5 for reducing the pressure of the refrigerant; and an indoor heat exchanger 4 for evaporating the refrigerant flowing into it during cooling and condensing the refrigerant introduced into it during heating.

[0052] Compressor 1, four-way valve 2, outdoor heat exchanger 3, throttling device 5 and indoor heat exchanger 4 are connected in sequence through pipelines to form a refrigerant circulation loop.

[0053] During refrigeration operation, compressor 1 discharges high-temperature, high-pressure gaseous refrigerant, which flows into outdoor heat exchanger 3 via four-way valve 2. At outdoor heat exchanger 3, the gaseous refrigerant exchanges heat with the outdoor air and is cooled. As the refrigerant flows through outdoor heat exchanger 3, it slowly changes from a gaseous state to a liquid state.

[0054] The liquid refrigerant discharged from the outdoor heat exchanger 3 is depressurized by the throttling device 5, becoming a gas-liquid two-phase state, and then guided to the indoor heat exchanger 4.

[0055] At indoor heat exchanger 4, the refrigerant evaporates through heat exchange with the indoor air. The temperature of the indoor air decreases and it is then blown into the room. In indoor heat exchanger 4, the refrigerant changes from a two-phase gaseous state to a gaseous state.

[0056] The gaseous refrigerant exiting from the indoor heat exchanger 4 returns to the compressor 1, thus forming a refrigeration cycle.

[0057] During heating operation, the four-way valve 2 reverses. Compressor 1 discharges high-temperature, high-pressure gaseous refrigerant, which flows into the indoor heat exchanger 4 via the four-way valve 2. At the indoor heat exchanger 4, the gaseous refrigerant exchanges heat with the indoor air and is heated, causing the increased air temperature to be blown into the room. As the refrigerant flows through the indoor heat exchanger 4, it gradually changes from a gaseous state to a liquid state.

[0058] The liquid refrigerant discharged from the indoor heat exchanger 4 is depressurized by the throttling device 5 and becomes a gas-liquid two-phase state.

[0059] The refrigerant flowing out of the throttling device 5 continues to be guided to the outdoor heat exchanger 3, where it exchanges heat with the outdoor air and evaporates. In the outdoor heat exchanger 3, the refrigerant changes from a two-phase gaseous state to a gaseous state.

[0060] The gaseous refrigerant from the outdoor heat exchanger 3 returns to the compressor 1, thus forming a heating cycle.

[0061] In this application, the outdoor heat exchanger 3 and the indoor heat exchanger 4 are collectively referred to as heat exchangers.

[0062] Reference Figure 2 The heat exchanger 100 according to the embodiments of this application includes a heat exchange tube 10 through which refrigerant flows, and fins 20 connected to the heat exchange tube 10 to increase the heat exchange area.

[0063] In some embodiments, the heat exchanger 100 may be a microchannel heat exchanger, and the heat exchange tube 10 is a flat tube; the fins 20 are connected to the flat tube, thereby increasing the heat exchange efficiency between the refrigerant and the air by increasing the surface area of ​​the flat tube.

[0064] The flat tube extends horizontally. Multiple flat tubes are arranged at intervals along the vertical (height) direction. The flat tube can be made of aluminum.

[0065] The fins 20 are in the form of sheets, and multiple fins 20 are stacked at a predetermined micro-pitch and inserted into a flat tube.

[0066] In other embodiments, the fins 20 are corrugatedly connected between the flat tubes.

[0067] A flat tube is a porous tube with multiple holes that form refrigerant flow paths. The refrigerant exchanges heat with the air as it flows through each hole of the flat tube. The multiple holes are arranged within the flat tube along the air flow direction relative to the heat exchanger 100.

[0068] In other embodiments, the heat exchange tube 10 may be a circular tube that passes through the fins 20.

[0069] The heat exchanger 100 includes a manifold 30. The manifold 30 is connected to one lateral end of the heat exchange tube 10.

[0070] The manifold 30 extends a predetermined length in the vertical direction. The manifold 30 is located on the side of the heat exchanger 100 where the throttling device 5 is connected.

[0071] The heat exchanger 100 includes a gas collecting pipe 40. The gas collecting pipe 40 and the flow collecting pipe 30 are respectively connected to the two ends of the heat exchange tube 10 in the lateral direction.

[0072] The gas collecting pipe 40 extends a predetermined length in the vertical direction. The gas collecting pipe 40 is located on the side of the heat exchanger 100 that is connected to the four-way valve 2.

[0073] When the heat exchanger 100 functions as an evaporator, the gas-liquid two-phase refrigerant flows into the manifold 30 and is split into multiple heat exchange tubes 10; the refrigerant flowing in the multiple heat exchange tubes 10 continues to flow out of the heat exchanger 100 through the gas collection pipe 40.

[0074] When the heat exchanger 100 functions as a condenser, the gaseous refrigerant flows into the gas collecting pipe 40 and is diverted to multiple heat exchange tubes 10; the refrigerant flowing in the multiple heat exchange tubes 10 continues to flow out of the heat exchanger 100 through the manifold 30.

[0075] In some embodiments, refer to Figure 1 The air conditioner may include a splitter 6. The splitter 6 may be shaped like a showerhead. Multiple capillary tubes 61 of the splitter 6 are connected to the manifold 30. The splitter 6 mainly functions as a primary distributor here.

[0076] When the height of the heat exchanger 100 is large, such as the height of the heat exchanger 100 in the top-discharge outdoor unit which is usually more than 1m, the manifold 30 is required to achieve the function of secondary flow distribution when the air field is uneven.

[0077] In the following text, the description of the refrigerant flow direction is based on the refrigerant flow direction when the heat exchanger 100 is used as an evaporator.

[0078] In some embodiments, refer to Figure 3 The flow distribution principle structure of the manifold 30 includes a refrigerant inlet 30a, an inflow cavity 30b located inside the manifold 30 and communicating with the refrigerant inlet 30a, a distribution cavity 331 located on the upper side of the inflow cavity 30b, and a flow distribution chamber 315 that connects the distribution cavity 331 to a plurality of heat exchange tubes 10 respectively.

[0079] The inflow cavity 30b and the distribution cavity 331 are separated by a wall 30d, and a connecting hole 341 is provided on the wall 30d.

[0080] The distribution chamber 331 is separated from the multiple diversion chambers 315 by a middle partition wall 30c, and the middle partition wall 30c is provided with multiple diversion holes 332 that are connected to the diversion chambers 315 respectively.

[0081] The refrigerant enters the inflow chamber 30b from the refrigerant inlet 30a, and then flows upward into the distribution chamber 331 through the connecting hole 341. It is then divided into multiple streams, and each stream of refrigerant flows to the heat exchange tube 10 through the diversion hole 332 and the diversion chamber 315.

[0082] The diversion principle structure of the above manifold 30 has many problems in processing and installation, and it is difficult to realize according to the existing processing technology.

[0083] For example, if the wall 30d is located below the lowest branch hole 332, the inflow cavity 30b located below the wall 30d needs to occupy a certain height space. When multiple manifolds 30 are installed and used vertically, the inflow cavity 30b of the manifold 30 will interfere with the distribution cavity 331 of the manifold 30 below it.

[0084] To avoid the aforementioned interference problems, in related technologies, reference is made to... Figure 4 By removing the lowest branching orifice 332 and moving the entire inflow cavity 30b upwards, interference between the upper and lower manifolds 30 can be avoided. Simultaneously, to ensure refrigerant distribution to the lowest branching chamber 315, the lowest branching chamber 315 is connected to its adjacent upper branching chamber 315. While this solves the interference problem, it also introduces the issue of uneven refrigerant distribution within the two lower heat exchange tubes 10.

[0085] For example, if the above-mentioned complex flow channel is achieved by using the traditional method of inserting partitions, slots are cut into an integral tube body, and the partition walls between the flow distribution chambers 315 are inserted into the tube body in the form of partition plates 32. Then, slots for installing partition plates 32 and slots for installing heat exchange tubes 10 need to be set on the tube body. Since these slots are densely arranged in the vertical direction, they will affect the straightness of the tube body in the vertical direction, and thus affect the fit between the tube body and the heat exchange tubes 10.

[0086] For example, when the height of the manifold 30 is relatively high, it is difficult to ensure the accuracy of the mating position between the diaphragm 30c and the pipe body while inserting the diaphragm 30c into the pipe body in the form of a plate.

[0087] To solve the above technical problems, refer to Figures 5 to 8 The manifold 30 according to the embodiments of this application includes a substrate 311.

[0088] The base 311 has an open mounting cavity 312 on one side. A plurality of heat exchange tube mounting slots 313 are provided on one side wall of the base 311, and the heat exchange tube 10 is inserted into the heat exchange tube mounting slot 313 to connect with the base 311.

[0089] The open side of the substrate 311 can be located on the side of the substrate 311 opposite to the heat exchanger tube mounting groove 313. That is, the open side of the substrate 311 and the heat exchanger tube mounting groove 313 are located on opposite sides of the substrate 311.

[0090] The manifold 30 includes multiple partition plates 32. The multiple partition plates 32 are inserted into the mounting cavity 312 and divide the mounting cavity 312 into multiple distribution chambers 315, which are respectively connected to the heat exchange tubes 10. The distribution chambers 315 are connected to the heat exchange tubes 10 one by one.

[0091] In this application, the substrate 311 can be manufactured by processes such as sheet metal stamping and bending (which will be introduced later), and the installation of the partition plate 32 onto the substrate 311 is also relatively convenient, making the product structure feasible and the manufacturing process and assembly method relatively simple.

[0092] The manifold 30 may include a jet pipe 33. The jet pipe 33 is elongated and cylindrical; specifically, the jet pipe 33 may be rectangular. The jet pipe 33 extends its length along the height direction. The interior of the jet pipe 33 is hollow to form a distribution cavity 331.

[0093] The injection pipe 33 has multiple diversion holes 332 on its side wall facing the heat exchanger tube mounting groove 313. Each of the multiple diversion holes 332 is connected to the distribution chamber 331 and is connected to the diversion chamber 315 in a one-to-one correspondence, so that the refrigerant in the distribution chamber 331 is divided into multiple streams through the multiple diversion holes 332 and flows to each diversion chamber 315 respectively, so as to realize the distribution of refrigerant.

[0094] In this application, the injection pipe 33 itself forms a distribution cavity 331, and the side wall of the injection pipe 33 with the diversion hole 332 forms a partition wall 30c between the distribution cavity 331 and the diversion chamber 315. It is not necessary to use a partition to separate the distribution cavity 331 as in the traditional process, or to set a separate partition to separate the distribution cavity 331 and the diversion chamber 315, which simplifies the assembly and manufacturing of the product.

[0095] In addition, the injection pipe 33 can use a pre-formed pipe, which is a relatively common material and has a low cost.

[0096] The manifold 30 may include an inlet pipe 34, which serves as a channel for refrigerant to flow into the manifold 30. The inlet pipe 34 is inserted into the injection pipe 33.

[0097] The inlet pipe 34 can be a circular pipe. A connecting hole 341 is provided on the side wall of the inlet pipe 34. The connecting hole 341 is connected to the distribution chamber 331, and the refrigerant in the inlet pipe 34 flows upward into the distribution chamber 331 through the connecting hole 341.

[0098] The exposed end of the inlet pipe 34 can be used as the refrigerant inlet 30a in the above-described flow-dividing principle structure. The internal space of the inlet pipe 34 can be used as the inflow chamber 30b in the above-described flow-dividing principle structure.

[0099] Since there is no need to set an additional inflow cavity 30b at the bottom of the distribution cavity 331, and the diameter of the inlet pipe 34 is not too large, interference between the upper inflow cavity 30b and the lower distribution cavity 331 can be avoided due to the inflow cavity 30b occupying too much height space.

[0100] When the heat exchanger 100 is used as an evaporator, the manifold 30 allows the refrigerant to enter the distribution chamber 331 from the inlet pipe 34 through the connecting hole 341. Then, the refrigerant is divided into multiple streams through the distribution chamber 331 through multiple diversion holes 332, flowing to the diversion chamber 315 respectively, and finally flowing to the heat exchange tube 10 from the diversion chamber 315. Thus, the manifold 30 achieves the distribution of refrigerant.

[0101] In some embodiments, the injection pipe 33 may be connected to the open side of the substrate 311. The open side end face of the substrate 311 and the end face of the partition plate 32 away from the heat exchange pipe 10 are respectively attached to the injection pipe 33 and then fixedly connected by brazing.

[0102] In some embodiments, refer to Figure 7 and Figure 12 The injection pipe 33 is inserted into the partition plate 32. The partition plate 32 has a notch 321. The injection pipe 33 is installed in the notch 321.

[0103] The notch 321 extends through the partition plate 32 in the height direction. The notch 321 is open on the open side of the base 311. The injection pipe 33 is inserted from the open side of the notch 321.

[0104] The notch 321 may be located in the middle of the transverse direction of the partition plate 32. The diversion hole 332 is located in the middle of the side wall of the injection pipe 33 in the transverse direction, such that the diversion hole 332 faces the middle of the heat exchange tube mounting groove 313.

[0105] The installation method of inserting the injection pipe 33 into the partition plate 32 is beneficial for the positioning and installation of the injection pipe 33 and facilitates the assembly of the injection pipe 33.

[0106] In some embodiments, the manifold 30 includes a cover plate 314. The cover plate 314 is connected to the open side of the base 311 to close the mounting cavity 312.

[0107] In this embodiment, the selection of the spray pipe 33 is relatively flexible, as long as it can be inserted into the partition plate 32. This avoids the problem of high manufacturing difficulty caused by the fixed size and high dimensional accuracy requirements of the spray pipe 33 in order to connect with the base 311 when the installation cavity 312 needs to be closed. This further reduces the manufacturing difficulty of the manifold 30.

[0108] The base 311 and the cover plate 314 are connected to form the main body 31 of the current collection. The main body 31 of the current collection forms the general appearance structure of the current collection pipe 30.

[0109] In some embodiments, the end face of the injection pipe 33 away from the heat exchanger mounting groove 313 abuts against the inner wall surface of the cover plate 314 to prevent refrigerant from flowing between the injection pipe 33 and the cover plate 314.

[0110] The end face of the partition plate 32 away from the heat exchange tube mounting groove 313 abuts against the inner wall of the cover plate 314 so as to seal the diversion chamber 315 through the cover plate 314.

[0111] In some embodiments, the partition plate 32 is inserted into the mounting cavity 312 from the open side of the base 311, thereby dividing the mounting cavity 312 into a plurality of partitions.

[0112] The inner wall of the mounting cavity 312 defined on the base 311 is provided with a partition plate insertion groove 316, and the partition plate 32 is inserted into the partition plate insertion groove 316 of the base 311.

[0113] The substrate 311 has two opposing inner sidewalls respectively provided with partition plate insertion grooves 316, and the partition plate insertion grooves 316 form insertion entrances on the open side of the substrate 311. The partition plate 32 is inserted into the partition plate insertion groove 316 from the insertion entrance.

[0114] In some embodiments, refer to Figure 9 The substrate 311 includes a substrate wall 3111. A heat exchange tube mounting groove 313 is provided on the substrate wall 3111.

[0115] The substrate 311 includes a substrate sidewall 3112. The substrate sidewall 3112 is connected to the opposite ends of the substrate wall 3111. A partition insertion groove 316 is provided on the substrate sidewall 3112.

[0116] In some embodiments, the width w of the partition insertion slot 316 gradually decreases along the insertion direction of the partition insertion slot 316.

[0117] The smaller the width of the partition plate insertion groove 316, the smaller the space it occupies on the base 311. Therefore, as w gradually decreases, it can ensure that the partition plate 32 is positioned on the base 311 through the partition plate insertion groove 316, and also minimize the impact of the partition plate insertion groove 316 on the structural strength of the base 311.

[0118] In some embodiments, the side of the substrate 311 that defines the partition insertion groove 316 is an inner arc surface 311a. The inner arc surface 311a extends from the end face of the substrate sidewall 3112 away from the substrate wall 3111 towards the inner wall surface of the substrate sidewall 3112, close to the substrate wall 3111 and close to the inner wall surface of the substrate sidewall 3112.

[0119] Starting from the end face of the substrate sidewall 3112 away from the substrate wall 3111, the distance from the inner arc surface 311a to the inner wall surface of the substrate sidewall 3112 gradually decreases in the direction closer to the substrate wall 3111, so that the space occupied by the partition insertion groove 316 on the substrate sidewall 3112 can be minimized.

[0120] The outer side of the partition plate 32 is provided with an outwardly convex arc surface, and the outer arc surface of the partition plate 32 abuts against the inner arc surface 311a on the side wall 3112 of the base.

[0121] To put it another way, continue to refer to Figure 9 On the cross-section of the partition insertion groove 316 perpendicular to the height direction, the outline of the partition insertion groove 316 includes an arc 3161 with its ends connected, a first straight line segment 3162, and a second straight line segment 3163.

[0122] The arc 3161 is located inside the substrate sidewall 3112. The first straight segment 3162 coincides with the inner wall surface of the substrate sidewall 3112, and the second straight segment 3163 coincides with the end face of the substrate sidewall 3112 that is away from the substrate wall 3111.

[0123] The outer arc surface of the partition plate 32 abuts against the surface where the arc 3161 is located.

[0124] In some embodiments, refer to Figure 10 and Figure 11 The main body of the substrate 311 can be formed by processing sheet or strip: partition insertion grooves 316 are processed at opposite ends on one side of the sheet.

[0125] The partition insertion slot 316 can be formed by cutting with a cutting tool. The cutting tool rotates around point B as the center and cuts from the inside to the outside. In the cutting dimensions, the height h is 1~2.5mm, the length L is 5~15mm, the tool rotation radius is 15~45mm, and the cutting thickness is 1~4mm.

[0126] The sheet metal with the partition insertion groove 316 can be punched and bent into a "U" shape to form the base wall 311 and the base side wall 3112 of the base 311.

[0127] The heat exchange tube mounting groove 313 on the substrate 311 can be stamped before or after the plate is bent.

[0128] The upper and lower ends of the base 311 are connected to end plates. The upper and lower ends of the mounting cavity 312 on the base 311 are closed by the end plates.

[0129] In some embodiments, the injection pipe 33 is provided with an inlet pipe mounting groove 333 for inserting an inlet pipe 34. The end of the inlet pipe 34 is inserted into the injection pipe 33 through the inlet pipe mounting groove 333.

[0130] The inlet pipe mounting groove 333 and the diversion hole 332 are located on opposite side walls of the injection pipe 33. Specifically, the diversion hole 332 is provided on the side wall of the injection pipe 33 facing the heat exchange pipe mounting groove 313, and the inlet pipe mounting groove 333 is provided on the side wall of the injection pipe 33 opposite to the side wall where the diversion hole 332 is located.

[0131] In the vertical direction, the inlet pipe 34 is staggered with the diversion hole 332 to avoid the inlet pipe 34 blocking the diversion hole 332.

[0132] In some embodiments, refer to Figure 7 and Figure 13 The cover plate 314 includes a cover wall 3141. The cover wall 3141 is opposite to the injection pipe 33. The cover wall 3141 is provided with a clearance hole 3143 that communicates with the inlet pipe mounting groove 333. The inlet pipe 34 passes through the clearance hole 3143 and enters the inlet pipe mounting groove 333.

[0133] The cover plate 314 includes a cover sidewall 3142. The cover sidewall 3142 is connected to both ends of the cover wall 3141 in the lateral direction. The cover sidewall 3142 abuts against the outer surface of the base sidewall 3112 to increase the contact area between the cover plate 314 and the base 311, so that the cover plate 314 and the base 311 can be firmly welded together.

[0134] In some embodiments, when the manifold 30 has a distribution cavity 331, the manifold 30 can be used as a one-to-many distribution structure.

[0135] The heat exchanger 100 may include a plurality of manifolds 30. The plurality of manifolds 30 may be connected to the heat exchange tubes 10 along the height direction.

[0136] In some embodiments, continue to refer to Figure 5 and Figure 6 When the manifold 30 has multiple distribution chambers 331, the manifold 30 can be used as a distribution structure with multiple distribution chambers. The heat exchanger 100 includes only one manifold 30.

[0137] In this embodiment, the injection pipe 33 has n distribution chambers 331, where n ≥ 2 and is an integer. Each distribution chamber 331 is connected to an inlet pipe 34. The inlet pipe 34 is connected to the capillary of the distributor 6.

[0138] A distribution baffle 334 is inserted into the injection pipe 33. The distribution baffle 334 separates n distribution cavities 331 on the injection pipe 33.

[0139] In some embodiments, a distribution partition groove 335 is provided on one side wall of the injection pipe 33, and a distribution partition 334 is inserted into the injection pipe 33 from the distribution partition groove 335.

[0140] The distribution baffle groove 335 can be located on the same side wall of the injection pipe 33 as the inlet pipe mounting groove 333.

[0141] In the vertical direction, the distribution baffle 334 is staggered with the diversion hole 3321 to avoid the distribution baffle 334 blocking the diversion hole 3321.

[0142] In some embodiments, the diversion hole 332 adjacent to the upper side of the distribution partition 334 is defined as the first diversion hole 3321, and the remaining diversion holes 332 are the second diversion holes 3322.

[0143] In the vertical direction, the inlet pipe 34 is located between the first diversion hole 3321 and the distribution partition 334. This ensures that the diversion holes 3321 corresponding to the same distribution cavity 331 are all located above the inlet pipe 34, guaranteeing that the refrigerant flows upward into each diversion hole 3321, thereby enabling uniform refrigerant distribution. If the refrigerant flows in from the top of the distribution cavity 331, gravity will cause separation of liquid and gas in the refrigerant, thus affecting the uniformity of the refrigerant.

[0144] In some embodiments, the distance from the first diversion hole 3321 to the second diversion hole 3322 adjacent to it on its upper side is less than the interval distance between two adjacent second diversion holes 3322.

[0145] Moving the first diversion hole 3321 upwards can increase the height distance between the first diversion hole 3321 and the distribution partition 334, thereby allowing the inlet pipe 34 to be installed below the first diversion hole 3321.

[0146] In some embodiments, the second diversion hole 3322 and its corresponding heat exchange tube 10 are at the same height, and the height of the first diversion hole 3321 is higher than that of its corresponding heat exchange tube 10.

[0147] In some embodiments, the components of the manifold 30 can be brazed together in a furnace, and the solder will fill the gaps between the components under capillary action.

[0148] For example, solder fills the gap between the end of the inlet pipe 34 and the inner wall of the spray pipe 33, so that the refrigerant can only flow out from the connecting hole 341 and not from the end of the spray pipe 33.

[0149] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An air conditioner, characterized in that, include: Heat exchanger; The heat exchanger includes: Multiple heat exchange tubes are arranged along the height direction for the flow of refrigerant; A manifold, used to distribute refrigerant to multiple heat exchange tubes, the manifold comprising: A substrate, connected to the heat exchange tube, wherein the substrate has an installation cavity open on one side; Multiple partition plates are inserted into the mounting cavity from the open side of the mounting cavity, dividing the mounting cavity into multiple flow chambers that are correspondingly connected to the heat exchange tubes; The injection pipe is connected to the partition plate. The side wall of the injection pipe is provided with a plurality of diversion holes that communicate with the diversion chamber. A distribution cavity communicating with the diversion holes is formed inside the injection pipe. An inlet pipe is inserted into the injection pipe, and a connecting hole is provided on the side wall of the inlet pipe, which communicates with the distribution chamber; When the heat exchanger is used as an evaporator, the manifold allows the refrigerant to enter the distribution chamber from the inlet pipe through the connecting hole, and then flow from the distribution chamber to the distribution chamber through the multiple distribution holes.

2. The air conditioner according to claim 1, characterized in that, The partition plate is provided with a notch or groove, and the spray pipe is inserted into the notch or groove.

3. The air conditioner according to claim 2, characterized in that, The manifold also includes: A cover plate, connected to the open side of the mounting cavity, is used to close the mounting cavity. The cover plate is provided with a clearance hole for the inlet pipe to pass through.

4. The air conditioner according to claim 1, characterized in that, The inner wall of the substrate is provided with a partition plate insertion groove, and the partition plate is inserted into the partition plate insertion groove.

5. The air conditioner according to claim 4, characterized in that, The substrate is made of a sheet material, and the partition insertion grooves are machined at opposite ends on one side of the sheet material; the sheet material is bent to form a U-shaped substrate.

6. The air conditioner according to claim 4, characterized in that, Along the direction in which the partition plate is inserted into the partition plate insertion slot, the width w of the partition plate insertion slot gradually decreases.

7. The air conditioner according to claim 6, characterized in that, The substrate has an inner arc surface, which is a groove surface that defines the partition plate insertion slot. The outer side of the partition plate has an outwardly convex outer arc surface, and in the assembled state, the outer arc surface fits into the inner arc surface.

8. The air conditioner according to any one of claims 1-7, characterized in that, The manifold also includes: A distribution partition is inserted into the injection pipe to divide the internal space of the injection pipe into n distribution chambers, where n ≥ 2.

9. The air conditioner according to claim 8, characterized in that, The diversion hole adjacent to the upper side of the distribution partition is defined as the first diversion hole, and the inlet pipe is located between the first diversion hole and the distribution partition in the height direction.

10. An air conditioner, characterized in that, include: Heat exchanger; The heat exchanger includes: Multiple heat exchange tubes are arranged along the height direction for the flow of refrigerant; A manifold, used to distribute refrigerant to multiple heat exchange tubes, the manifold comprising: The substrate is connected to the heat exchange tube, and the substrate has an installation cavity with one side open. Multiple partition plates are inserted into the mounting cavity from the open side of the mounting cavity, dividing the mounting cavity into multiple flow chambers that are correspondingly connected to the heat exchange tubes; The injection pipe is connected to the partition plate. The side wall of the injection pipe is provided with a plurality of diversion holes that communicate with the diversion chamber. The injection pipe is provided with a distribution cavity that communicates with the diversion holes. An inlet pipe is inserted into the injection pipe, and a connecting hole is provided on the side wall of the inlet pipe, which communicates with the distribution cavity.

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