Heat exchanger and refrigeration equipment

Abstract

The utility model discloses a heat exchanger and refrigeration equipment, relates to refrigeration technical field, wherein the heat exchanger comprises a heat exchange tube, the heat exchange tube comprises a plurality of tube bodies, each tube body comprises a first flat tube and a second flat tube connected with the first flat tube in a bending manner, the first flat tube and the second flat tube of the same tube body are arranged along a first direction, the axis of the first flat tube and the axis of the second flat tube of the same tube body are mutually inclined along a second direction, and the second direction is intersected with the first direction; and moreover, the plurality of pipe bodies are arranged along a second direction, and the second flat pipe of each pipe body is connected with the first flat pipe of the adjacent pipe body in a bending manner. According to the heat exchanger, the whole heat exchange tube can be formed by bending only one raw material tube for multiple times, the number of parts is greatly reduced, meanwhile, the connecting and assembling steps among a plurality of parts are reduced, the assembling process of the heat exchanger is simplified, and the production efficiency of the heat exchanger can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigeration, in particular to a heat exchanger and a refrigeration device. Background Art

[0002] Refrigerators and freezers are widely used in people's daily work and life. They are refrigeration equipment used to refrigerate / freeze food, medicine or other items that require a low-temperature storage environment. Refrigerators include heat exchangers such as evaporators, which are one of the important components to achieve the refrigeration function of refrigerators.

[0003] In the related art, in order to increase the heat exchange area between the evaporator and the air, the evaporators of some refrigerators use flat heat exchange pipes and are arranged in a multi-layer structure. Since flat pipes are not easy to bend compared to cylindrical pipes, the evaporator needs to be connected by multiple split components according to the traditional configuration design. There are many components and many connection and assembly steps between the components, which leads to a complicated assembly process and low production efficiency. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a heat exchanger that can improve production efficiency.

[0005] The utility model also provides a refrigeration device having the heat exchanger.

[0006] According to a first aspect of the present invention, a heat exchanger includes a heat exchange tube, wherein the heat exchange tube includes a plurality of tube bodies, each of the tube bodies includes a first flat tube and a second flat tube connected to the first flat tube by bending, the first flat tube and the second flat tube of the same tube body are arranged along a first direction, and the axis of the first flat tube and the axis of the second flat tube of the same tube body are inclined to each other along a second direction; wherein the second direction intersects with the first direction;

[0007] Furthermore, the plurality of tubes are arranged along the second direction, and the second flat tube of each tube is bent and connected to the first flat tube of the adjacent tube.

[0008] The heat exchanger according to the embodiment of the utility model has at least the following beneficial effects:

[0009] By arranging the first flat tube and the second flat tube along the first direction, and tilting the axis of the first flat tube and the axis of the second flat tube along the second direction, that is, the first flat tube and the second flat tube are tilted and misaligned along the second direction, instead of being flush with each other, which is different from the traditional evaporator. Also, by setting the second flat tube of each tube body and the first flat tube of the tube body adjacent to it in a bent connection, that is, multiple tube bodies are connected end to end along the second direction, so that the overall shape of the heat exchange tube is a "double staircase" shape, then the heat exchange tube as a whole can be formed by only one raw material tube through multiple bendings. Compared with the flat tube evaporator in the related art, the number of components is greatly reduced, and the connection and assembly steps such as welding steps between multiple components are reduced, thereby greatly simplifying the assembly process of the heat exchanger, which can effectively improve the production efficiency of the heat exchanger. In addition, because the first flat tube and the second flat tube are tilted and misaligned along the second direction, when the airflow flows through the heat exchange tube, it can produce a turbulent effect on the airflow, enhance the heat exchange between the airflow and the heat exchange tube, and thus can also improve the heat exchange efficiency of the heat exchanger.

[0010] According to some embodiments of the utility model, in the same tube body, the orthographic projection of the axis of the first flat tube on the first projection plane and the orthographic projection of the axis of the second flat tube on the first projection plane intersect obliquely, and the orthographic projection of the axis of the first flat tube on the second projection plane and the orthographic projection of the axis of the second flat tube on the second projection plane are parallel to each other; wherein, the first projection plane is parallel to the axis of each of the first flat tubes, and the second projection plane is perpendicular to the first projection plane.

[0011] According to some embodiments of the present invention, in each of the tube bodies, the width of the first flat tube along the second direction is greater than the width of the first flat tube along the first direction, and the width of the second flat tube along the second direction is greater than the width of the second flat tube along the first direction.

[0012] According to some embodiments of the present invention, axes of the two first flat tubes of every two adjacent tube bodies are parallel to each other, and / or axes of the two second flat tubes of every two adjacent tube bodies are parallel to each other.

[0013] According to some embodiments of the present utility model, the heat exchange tube further includes a plurality of heat exchange fins, and the heat exchange fins are integrally formed on the surface of the tube body by a scraping process.

[0014] According to some embodiments of the present invention, the first flat tube includes a first surface and a second surface that are opposite to each other along the first direction, and the second flat tube includes a third surface and a fourth surface that are opposite to each other along the first direction;

[0015] Each of the heat exchange fins extends along the second direction, wherein part of the heat exchange fins is connected to the first surface and the second surface, and part of the heat exchange fins is connected to the third surface and the fourth surface.

[0016] According to some embodiments of the utility model, each of the heat exchange fins includes a first sub-fin and a second sub-fin, the first sub-fin and the second sub-fin are arranged along the second direction, the first sub-fin is inclined at a first angle relative to the surface of the tube body, and the second sub-fin is inclined at a second angle relative to the surface of the first sub-fin.

[0017] According to some embodiments of the present invention, a first bent tube is connected between the first flat tube and the second flat tube of the same tube body, and a second bent tube is connected between the first flat tube and the second flat tube of two adjacent tube bodies;

[0018] The heat exchanger also includes:

[0019] A first mounting plate is provided with a plurality of first mounting holes, the plurality of first mounting holes are arranged at intervals along the second direction, the first mounting plate is clamped to one end of the heat exchange tube provided with the first bent tube through the first mounting hole, so that each of the first bent tubes is passed through one of the first mounting holes; and

[0020] The second mounting plate is provided with a plurality of second mounting holes, and the plurality of second mounting holes are spaced apart along the second direction. The second mounting plate is connected to one end of the heat exchange tube provided with the second bent tube through the second mounting hole, so that each of the second bent tubes is passed through one of the second mounting holes.

[0021] According to some embodiments of the present invention, the first mounting hole includes a first sub-through hole and a second sub-through hole connected to the first sub-through hole, and the first sub-through hole and the second sub-through hole are staggered along the second direction; and / or,

[0022] The second mounting hole includes a third sub-through hole and a fourth sub-through hole communicating with the third sub-through hole, and the third sub-through hole and the fourth sub-through hole are staggered along the second direction.

[0023] The refrigeration device according to the second embodiment of the utility model comprises the heat exchanger described in any one of the above embodiments.

[0024] The refrigeration device according to the embodiment of the utility model has at least the following beneficial effects:

[0025] The heat exchanger of the first embodiment is different from the conventional evaporator by arranging the first flat tube and the second flat tube in the first direction and arranging the axis of the first flat tube and the axis of the second flat tube in the second direction, that is, the first flat tube and the second flat tube are tilted and misaligned in the second direction, rather than being flush with each other. The second flat tube of each tube body is bent and connected with the first flat tube of the tube body adjacent to it, that is, multiple tube bodies are connected end to end in the second direction, so that the overall shape of the heat exchange tube is a "double staircase". Then, the heat exchange tube as a whole can be formed by bending a raw material tube for multiple times. Compared with the flat tube evaporator in the related art, the number of components is greatly reduced, and the connection and assembly steps between multiple components, such as welding steps, are reduced, thereby greatly simplifying the assembly process of the heat exchanger, which can effectively improve the production efficiency of the heat exchanger, and further improve the production efficiency of the refrigeration equipment. Furthermore, because the first flat tube and the second flat tube are tilted and misaligned along the second direction, when the airflow flows through the heat exchange tube, a turbulent effect can be generated on the airflow, thereby enhancing the heat exchange between the airflow and the heat exchange tube, and improving the heat exchange efficiency of the heat exchanger, thereby improving the refrigeration efficiency of the refrigeration equipment.

[0026] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0028] Figure 1 This is a schematic diagram of the structure of the heat exchange tube in an embodiment of the utility model;

[0029] Figure 2 for Figure 1 A top view of the heat exchange tube in the middle;

[0030] Figure 3 It is a structural schematic diagram of a flat tube evaporator in the prior art;

[0031] Figure 4 This is a schematic structural diagram of a heat exchanger according to an embodiment of the utility model;

[0032] Figure 5 for Figure 4 A top view of the heat exchanger;

[0033] Figure 6 It is a partial structural schematic diagram of the heat exchange tube before bending according to an embodiment of the utility model;

[0034] Figure 7 A schematic structural diagram of another embodiment of the heat exchange fin of the utility model embodiment;

[0035] Figure 8It is a structural schematic diagram of multiple embodiments of the first mounting plate of the embodiment of the utility model;

[0036] Fig. 9 It is a structural schematic diagram of multiple embodiments of the second mounting plate of the embodiment of the utility model.

[0037] Figure Number:

[0038] Heat exchanger 10; heat exchange tube 100; processing section 100a; bending section 100b;

[0039] Tube body 110; first flat tube 111; first surface 1111; second surface 1112;

[0040] The second flat tube 112; the third surface 1121; the fourth surface 1122;

[0041] A first bending tube 113; a second bending tube 114;

[0042] Heat exchange fin 120; first sub-fin 121; second sub-fin 122;

[0043] First mounting plate 200; first mounting hole 210; first sub-through hole 211; second sub-through hole 212;

[0044] The second mounting plate 300; the second mounting hole 310; the third sub-through hole 311; the fourth sub-through hole 312;

[0045] Input pipe 400; output pipe 500; flat tube evaporator 20; evaporation tube 21; liquid collecting pipe 22. DETAILED DESCRIPTION

[0046] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0047] In the description of the present invention, it should be understood that the descriptions involving orientation, such as the orientation or positional relationship indicated as up, down, etc., are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0048] In the description of the present utility model, "a plurality" means more than two. If there is a description of "first" or "second", it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0049] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0050] The present application provides a heat exchanger.

[0051] Specifically, a heat exchanger, also known as a heat exchanger, is a device used to transfer heat from a hot fluid to a cold fluid, which can increase or decrease the temperature of the surrounding medium. Among them, a heat exchanger can be a condenser or an evaporator. The following will take the evaporator as an example to explain the heat exchanger in detail.

[0052] Please refer to Figure 1 and Figure 2 , Figure 1 A schematic diagram of the structure of the heat exchange tube provided in the embodiment of the utility model, Figure 2 for Figure 1 The heat exchanger includes a heat exchange tube 100.

[0053] It can be understood that the heat exchange tube 100 is hollow inside, and a refrigerant channel for the refrigerant to flow is formed inside the heat exchange tube 100. When the heat exchanger is used as an evaporator, the refrigerant can evaporate and absorb heat inside the heat exchange tube 100, so that the surface temperature of the heat exchange tube 100 is reduced to achieve a cooling effect.

[0054] like Figure 1 As shown, the heat exchange tube 100 includes a plurality of tube bodies 110 , each of the tube bodies 110 includes a first flat tube 111 and a second flat tube 112 , and the first flat tube 111 is connected to the second flat tube 112 by bending.

[0055] Among them, the tube body 110 adopts a flat tube design, and the cross-sectional shape of each part of the tube body 110 is a rectangle or a rounded rectangle, so that the heat exchange tube 100 has a larger surface area, thereby increasing the contact area between the tube body 110 and the air, allowing the air and the tube body 110 to fully exchange heat and improve the heat exchange effect.

[0056] In the related technology, the evaporator of some refrigeration equipment also uses flat tubes, please refer to Figure 3 , Figure 3 It is a structural schematic diagram of a flat tube evaporator in the prior art, wherein Figure 3 (a) is the front view of the flat tube evaporator. Figure 3(b) is a top view of a flat tube evaporator. This flat tube evaporator 20 includes multiple layers of evaporation tubes 21, each layer of evaporation tubes 21 includes multiple rows of pipes extending in the horizontal direction, and the multiple rows of pipes are connected by bending. Due to the structural limitations of the flat tubes themselves, the flat tubes can only be bent in one direction, so the multiple layers of evaporation tubes 21 cannot be bent and connected. Instead, a liquid collecting pipe 22 is set on one side of the multiple layers of evaporation tubes 21, and each layer of evaporation tubes 21 is connected by the liquid collecting pipe 22. Each layer of evaporation tubes 21 needs to be processed separately, and each layer of evaporation tubes 21 needs to be welded to the liquid collecting pipe 22 separately, so that the entire evaporator has more parts and more connection and assembly steps, resulting in low overall production efficiency of the evaporator.

[0057] In this regard, the heat exchange tube 100 provided in this application can solve the above problems. Please continue to refer to Figure 1 and Figure 2 In the embodiment of the present application, the first flat tube 111 and the second flat tube 112 of the same tube body 110 are arranged along the first direction, and the axis of the first flat tube 111 and the axis of the second flat tube 112 of the same tube body 110 are inclined to each other along the second direction, and the second direction intersects the first direction. In addition, multiple tube bodies 110 are arranged along the second direction, and the second flat tube 112 of each tube body 110 is bent and connected to the first flat tube 111 of the adjacent tube body 110.

[0058] The second direction and the first direction may intersect each other perpendicularly, or the second direction and the first direction may intersect each other obliquely. In one embodiment, the second direction and the first direction are perpendicular to each other.

[0059] Then, the heat exchange tube 100 is composed of a plurality of tube bodies 110 arranged in the second direction, each layer of the tube body 110 includes a first flat tube 111 and a second flat tube 112 arranged in the first direction, the second direction is the height direction of the heat exchanger 10, and the first direction is the width direction of the heat exchanger 10. Among them, a first bent tube 113 may be connected between the first flat tube 111 and the second flat tube 112 of the same tube body 110, and a second bent tube 114 may be connected between the second flat tube 112 of each layer of the tube body 110 and the first flat tube 111 of the tube body 110 of the adjacent layer.

[0060] In the same tube body 110, the axis of the first flat tube 111 and the axis of the second flat tube 112 are arranged obliquely along the second direction, that is, they are obliquely misaligned along the height direction of the heat exchanger 10, that is, the first flat tube 111 and the second flat tube 112 are obliquely misaligned along the height direction of the heat exchanger 10, instead of being flush with each other, which is different from the traditional evaporator. In addition, in the multiple tube bodies 110, the second flat tube 112 of each tube body 110 is bent and connected to the first flat tube 111 of the adjacent tube body 110, that is, the multiple tube bodies 110 are connected end to end along the height direction of the heat exchanger 10, so that the overall shape of the entire heat exchange tube 100 is a "double staircase" shape.

[0061] Then, the embodiment of the present application designs the heat exchange tube 100 as a "double-staircase" shape instead of the traditional evaporator configuration. The heat exchange tube 100 can be formed by bending a single raw tube multiple times. Compared with the flat tube evaporator in the related art, the number of components is greatly reduced, and the connection and assembly steps between multiple components, such as welding steps, are reduced, thereby greatly simplifying the assembly process of the heat exchanger 10, and effectively improving the production efficiency of the heat exchanger 10. Since the heat exchange tube 100 of the embodiment of the present application can be formed by integral bending, the welding steps between the tube bodies 110 are omitted, and there is no problem of welding sealing. It can be applied to some environments with high requirements for air tightness, thereby improving the application scope of the heat exchanger 10. In addition, the embodiment of the present application, through the above-mentioned arrangement, makes the first flat tube 111 and the second flat tube 112 staggered along the second direction. When the airflow passes through the heat exchange tube 100, it can produce a turbulent effect on the airflow, enhance the heat exchange between the airflow and the heat exchange tube 100, and improve the heat exchange efficiency of the heat exchanger.

[0062] It is also necessary to point out that, in the flat tube evaporator 20 of the related art, the driving force on the refrigerant at the end of the evaporator tube 21 away from the collecting tube 22 is relatively small, and the refrigerant at the port of the evaporator tube 21 close to the collecting tube 22 is impacted by the refrigerant input into the collecting tube 22, which hinders the refrigerant after heat exchange from flowing out of the port of the evaporator tube 21, making it difficult for the refrigerant in the evaporator tube 21 to be updated in time, affecting the heat exchange effect of the evaporator.

[0063] In the embodiment of the present application, the second flat tube 112 of each tube body 110 is bent and connected with the first flat tube 111 of the adjacent tube body 110, so that the multiple tube bodies 110 are connected end to end along the second direction. Then, the refrigerant in the heat exchange tube 100 can flow through each tube body 110 in sequence, and the refrigerant entering from the rear continuously applies a driving force to the refrigerant in the front. Compared with the flat tube evaporator in the related art, the refrigerant in the heat exchange tube 100 flows continuously and at a faster flow rate, and can be updated in time, thereby avoiding the situation where the heat exchange is affected by the presence of stagnant refrigerant in the heat exchange tube 100, thereby improving the heat exchange effect.

[0064] In one embodiment, please continue to refer to Figure 1 and Figure 2 In the same tube body 110, the orthographic projection of the axis of the first flat tube 111 on the first projection plane α and the orthographic projection of the axis of the second flat tube 112 on the first projection plane α are obliquely intersected, and the orthographic projection of the axis of the first flat tube 111 on the second projection plane β and the orthographic projection of the axis of the second flat tube 112 on the second projection plane β are parallel to each other. The first projection plane α is parallel to the axis of each first flat tube 111, and the second projection plane β is perpendicular to the first projection plane α. Figure 1 and Figure 2 As shown, the first projection plane α is perpendicular to Figure 2 The second projection plane β is perpendicular to the paper surface. Figure 1 The plane in the direction of the paper.

[0065] It should be noted that the parallelism described herein can be exactly parallel or roughly parallel, and absolute parallelism is not required. Affected by the processing accuracy and assembly accuracy, the angle between the two can be considered parallel within a smaller range (for example, less than 3°). Similarly, the verticality described herein can be exactly vertical or roughly vertical, and is not limited to absolute verticality. The angle between the two can be considered vertical if there is a small angle deviation (for example, less than 3°) relative to 90°.

[0066] like Figure 1 and Figure 2 As shown, the orthographic projection of the axis of the first flat tube 111 on the second projection plane β and the orthographic projection of the axis of the second flat tube 112 on the second projection plane β are parallel to each other, which means that the first flat tube 111 and the second flat tube 112 are arranged in parallel along the first direction. Then, the two surfaces of the first flat tube 111 and the second flat tube 112 facing each other are parallel to each other, so that the spacing between each part of the first flat tube 111 and each part of the second flat tube 112 is the same, thereby avoiding increasing the overall volume of the heat exchange tube 100.

[0067] In one embodiment, in each tube body 110 , the width of the first flat tube 111 along the second direction is greater than the width of the first flat tube 111 along the first direction, and the width of the second flat tube 112 along the second direction is greater than the width of the second flat tube 112 along the first direction.

[0068] Since the first flat tube 111 and the second flat tube 112 are arranged along the first direction, the bending axis between the first flat tube 111 and the second flat tube 112 is along the second direction. By setting the width of the first flat tube 111 along the second direction to be greater than the width of the first flat tube 111 along the first direction, and setting the width of the second flat tube 112 along the second direction to be greater than the width of the second flat tube 112 along the first direction, the thickness of the tube body 110 at the bending part is thinner, and it is easier to bend the tube body 110, so that the resistance generated when the tube body 110 is bent is smaller, and the production efficiency is further improved. Moreover, in this arrangement, the deformation of the refrigerant channel at the bending part is smaller, and a smaller bending radius can be formed. Then, while ensuring the smooth flow of the refrigerant medium, the space occupied by the tube body 110 is reduced, and the overall volume of the heat exchanger 10 can be reduced, so when the heat exchanger 10 is used in refrigeration equipment such as refrigerators or air conditioners, the volume of the refrigeration equipment can be reduced.

[0069] In one embodiment, please refer to Figure 1 The axes of the two first flat tubes 111 of each two adjacent tube bodies 110 are parallel to each other.

[0070] By setting the axes of the two first flat tubes 111 of each two adjacent tube bodies 110 to be parallel to each other, when the heat exchange tube 100 is bent on the bending machine, the same bending jig / fixture can be configured, and the heat exchange tube 100 can be bent according to the same bending parameters without adjustment, which can improve the bending efficiency, thereby further improving the overall production efficiency of the heat exchanger 10. Moreover, if the axes of the two first flat tubes 111 of the two adjacent tube bodies 110 are parallel to each other, the distance between the two first flat tubes 111 of the two adjacent tube bodies 110 is the same, so that the gap between the two first flat tubes 111 of the two adjacent tube bodies 110 can be made as small as possible, so as to avoid air flowing out of the gap and reduce the problem of return air short circuit.

[0071] Similarly, in another embodiment, the axes of the two second flat tubes 112 of every two adjacent tube bodies 110 are parallel to each other.

[0072] It should be understood that in order to achieve that the axes of the two first flat tubes 111 of every two adjacent tube bodies 110 are parallel to each other, and the axes of the two second flat tubes 112 of every two adjacent tube bodies 110 are parallel to each other, it is required that: the inclination angle between the first flat tube 111 and the second flat tube 112 corresponding to each tube body 110 is the same as the inclination angle between the second flat tube 112 corresponding to the tube body 110 and the first flat tube 111 of the adjacent tube body 110.

[0073] Please combine Figure 1 And refer to Figure 4 and Figure 5 , Figure 4 This is a schematic diagram of the structure of a heat exchanger according to an embodiment of the utility model. Figure 5 for Figure 4 The heat exchange tube 100 further includes a plurality of heat exchange fins 120. The plurality of heat exchange fins 120 are connected to the first flat tube 111 and / or the second flat tube 112 of at least one tube body 110.

[0074] By arranging the heat exchange fins 120 on the surface of the tube body 110, the cold or heat on the tube body 110 can be transferred to the heat exchange fins 120, so that when the air passes through the heat exchanger 10, the air can not only exchange heat with the surface of the tube body 110, but also with the heat exchange fins 120, which greatly increases the heat exchange area and enhances the heat exchange effect. For example, when the heat exchanger 10 is an evaporator, the cooling effect on the air can be enhanced, so that the temperature of the air flowing through the evaporator is quickly reduced. In addition, the heat exchange fins 120 can also have a turbulent effect on the air passing through the heat exchanger 10, slowing down the flow rate of the air, so that the air can fully exchange heat with the heat exchanger 10.

[0075] In one embodiment, in order to make the heat exchanger 10 have a sufficiently high heat exchange efficiency, a plurality of heat exchange fins 120 are disposed on the surface of the first flat tube 111 and the second flat tube 112 of each tube body 110 .

[0076] In one embodiment, the heat exchange fins 120 are integrally formed on the surface of the tube body 110 by a shovel-tooth process.

[0077] The heat exchange fins 120 are formed by a skiving process, that is, the heat exchange fins 120 are skived fins, so that the heat exchange fins 120 and the tube body 110 are formed into an integrated structure, which eliminates a large number of connection and assembly processes between the heat exchange fins 120 and the tube body 110, and can significantly improve the production efficiency of the heat exchanger 10. Especially in mass production, batch processing of the tube body 110 by skiving equipment such as a skiving lathe can not only improve efficiency but also reduce labor costs.

[0078] Moreover, since the heat exchange fins 120 themselves are structures cut out from the tube body 110 through the tooth-cutting process, there is almost no thermal resistance between the two, and there is no assembly gap between the heat exchange fins 120 and the tube body 110, the cold of the tube body 110 can be quickly transferred to the heat transfer fins, so that the temperature difference between the tube body 110 and the heat exchange fins 120 is small, and the temperature of each part of the heat exchanger 10 is more uniform, which can improve the heat exchange effect on the air.

[0079] It is understandable that, in order to facilitate bending of the tube body 110 , the heat exchange fins 120 are not provided on the first bent tube 113 and the second bent tube 114 , and the heat exchange fins 120 are only provided on the surfaces of the first flat tube 111 and the second flat tube 112 of the tube body 110 .

[0080] During the production process, the heat exchange fins 120 may be processed on the surface of the raw material tube first, and then the raw material tube is bent multiple times to form the overall shape of the heat exchange tube 100. For details, please refer to Figure 6 , Figure 6 This is a partial structural schematic diagram of the heat exchange tube before bending according to an embodiment of the utility model. The raw material tube is divided into processing sections 100a and bending sections 100b according to the design dimensions in advance. A bending section 100b is arranged between every two processing sections 100a. The required heat exchange fins 120 are first cut out on each processing section 100a by a tooth-removing lathe through a tooth-removing process. After the tooth-removing process of all processing sections 100a is completed, each bending section 100b is bent by a bending machine. After all the bending sections 100b are bent, the overall shape of the heat exchange tube 100 is finally formed.

[0081] like Figure 5 As shown, the first flat tube 111 includes a first surface 1111 and a second surface 1112 which are opposite to each other along a first direction, and the second flat tube 112 includes a third surface 1121 and a fourth surface 1122 which are opposite to each other along the first direction. The second surface 1112 and the third surface 1121 are arranged opposite to each other.

[0082] The first surface 1111, the second surface 1112, the third surface 1121 and the fourth surface 1122 are surfaces extending parallel to the second direction, that is, surfaces extending along the height direction of the heat exchanger 10. When the heat exchanger 10 is set in the refrigerator, the air flowing through the heat exchanger 10 mainly exchanges heat with the above four surfaces.

[0083] In order to maximize the heat transfer efficiency of the heat exchange fins 120, please refer to Figure 4 and Figure 5 Each heat exchange fin 120 extends along the second direction, and part of the heat exchange fins 120 arranged on the first flat tube 111 is connected to the first surface 1111 and the second surface 1112 , and part of the heat exchange fins 120 arranged on the second flat tube 112 is connected to the third surface 1121 and the fourth surface 1122 .

[0084] Then, the heat exchange fins 120 extend along the height direction of the heat exchanger 10. When the heat exchanger 10 is set in the refrigerator, the heat exchange fins 120 are located on the air flow path, and the extension direction of the heat exchange fins 120 is the same or almost the same as the air flow direction, and will not block the flow of air. When the air flows through the heat exchanger 10, it can fully contact the surface of the heat exchange fins 120 to achieve heat exchange.

[0085] Moreover, as mentioned above, the width of each part of the tube body 110 along the second direction is greater than the width along the first direction, that is, the first surface 1111, the second surface 1112, the third surface 1121 and the fourth surface 1122 have sufficient width along the second direction, so that the heat exchange fins 120 can extend to a sufficiently long length when connected to the above-mentioned surfaces, thereby increasing the contact area with the air.

[0086] In one embodiment, please refer to Figure 7 , Figure 7 The schematic diagram of the structure of another embodiment of the heat exchange fin of the utility model embodiment is as follows. Each heat exchange fin 120 includes a first sub-fin 121 and a second sub-fin 122, the first sub-fin 121 and the second sub-fin 122 are arranged along the second direction, the first sub-fin 121 is inclined at a first angle θ relative to the surface of the tube body 110, and the second sub-fin 122 is inclined at a second angle γ relative to the surface of the first sub-fin 121.

[0087] Each heat exchange fin 120 includes a first sub-fin 121 and a second sub-fin 122 , that is, each heat exchange fin 120 includes two parts. The first sub-fin 121 is inclined at a first angle θ relative to the surface of the tube body 110, and the second sub-fin 122 is inclined at a second angle γ relative to the first sub-fin 121. Therefore, the first sub-fin 121 and the second sub-fin 122 are inclined at different angles relative to the surface of the tube body 110, so that the first sub-fin 121 and the second sub-fin 122 are not flush, and there is an angular misalignment between the first sub-fin 121 and the second sub-fin 122, which can increase the turbulence effect on the air; moreover, for each heat exchange fin 120, taking the first sub-fin 121 closer to the wind source as an example, the air first flows through the first sub-fin 121 and then flows through the second sub-fin 122, so that the air that was originally a certain distance away from the first sub-fin 121 and was not fully heated by the first sub-fin 121 can also exchange heat with the second sub-fin 122 after passing through the first sub-fin 121, thereby improving the heat exchange efficiency.

[0088] Specifically, the first sub-fin 121 and the second sub-fin 122 can be formed by two scraping knives. The inclination angles of the first sub-fin 121 and the second sub-fin 122 can be achieved by setting two scraping knives to perform scraping at different scraping angles.

[0089] In order to fix the heat exchanger 10 to the refrigeration equipment, the heat exchanger 10 may also be provided with a mounting structure. For example, a mounting plate may be connected to the heat exchange tube 100 so that the heat exchange tube 100 is connected and fixed to the refrigeration equipment through the mounting plate.

[0090] like Figure 4 As shown, in one embodiment, the heat exchanger 10 further includes a first mounting plate 200 and a second mounting plate 300 .

[0091] Please combine Figure 4 And refer to Figure 8 , Figure 8 The first mounting plate 200 is a schematic diagram of the structure of multiple embodiments of the first mounting plate of the utility model. The first mounting plate 200 is provided with a plurality of first mounting holes 210, and the plurality of first mounting holes 210 are arranged at intervals along the second direction. The first mounting plate 200 is clamped to one end of the heat exchange tube 100 provided with the first bent tube 113 through the first mounting holes 210, so that each first bent tube 113 is passed through a first mounting hole 210.

[0092] like Figure 8 As shown in (a), the first mounting hole 210 can be set in the middle of the first mounting plate 200, and the first mounting plate 200 needs to be clamped and assembled on the heat exchange tube 100 along the axial direction of the first flat tube 111 or the second flat tube 112; Figure 8 As shown in (b), the first mounting hole 210 may also extend from the middle of the first mounting plate 200 to a side edge of the first mounting plate 200 and penetrate the side edge, so that the first mounting plate 200 can be clamped and assembled to the heat exchange tube 100 not only along the axial direction of the first flat tube 111 or the second flat tube 112, but also can be clamped and assembled to the heat exchange tube 100 along the axial direction perpendicular to the first flat tube 111 or the second flat tube 112.

[0093] Please combine Figure 4 And refer to Fig. 9 , Fig. 9 The second mounting plate 300 is provided with a plurality of second mounting holes 310, and the plurality of second mounting holes 310 are arranged at intervals along the second direction. The second mounting plate 300 is clamped to one end of the heat exchange tube 100 provided with the second bent tube 114 through the second mounting holes 310, so that each second bent tube 114 is passed through a second mounting hole 310.

[0094] Similarly, if Fig. 9 (a) and Fig. 9 As shown in (b), the second mounting hole 310 can also be designed according to the structural shape of the first mounting hole 210, which will not be described in detail here.

[0095] Since the axis of the first flat tube 111 and the axis of the second flat tube 112 are inclined and intersected along the second direction (i.e., the height direction of the heat exchange tube 100), the ends of the first flat tube 111 and the second flat tube 112 near the first bent tube 113 or the second bent tube 114 have a certain height difference. In order to make the first mounting plate 200 and the second mounting plate 300 more firmly clamped on the heat exchange tube 100, the first mounting hole 210 and the second mounting hole 310 can be designed as special-shaped holes.

[0096] In one embodiment, please refer to Figure 8 (c) The first mounting hole 210 includes a first sub-through hole 211 and a second sub-through hole 212. The first sub-through hole 211 and the second sub-through hole 212 are connected to each other, and the first sub-through hole 211 and the second sub-through hole 212 are staggered along the second direction.

[0097] Among them, the first sub-through hole 211 and the second sub-through hole 212 are staggered along the second direction, that is, the first sub-through hole 211 and the second sub-through hole 212 are staggered along the height direction of the heat exchanger 10, so that the first sub-through hole 211 and the second sub-through hole 212 have a height difference, for example, the first sub-through hole 211 is higher than the second sub-through hole 212, so that the first sub-through hole 211 can be clamped with one end of the first flat tube 111 close to the first bent tube 113, and the second sub-through hole 212 can be clamped with one end of the second flat tube 112 close to the first bent tube 113.

[0098] Then, according to the height difference between the end of the first flat tube 111 and the end of the second flat tube 112, this embodiment designs the first mounting hole 210 as the above-mentioned special-shaped hole, so that the first sub-through hole 211 and the second sub-through hole 212 are respectively clamped with the end of the first flat tube 111 and the end of the second flat tube 112, so that the first mounting plate 200 and the heat exchange tube 100 can be firmly connected together, thereby ensuring the firmness of the connection between the first mounting plate 200 and the heat exchange tube 100, and preventing the two from being easily separated. There is no need to add other connection methods (for example, there is no need to add additional binding ties or welding), the assembly steps are simple, and the production efficiency of the heat exchanger 10 can be improved.

[0099] In another embodiment, please refer to Fig. 9 (c) The second mounting hole 310 includes a third sub-through hole 311 and a fourth sub-through hole 312, the third sub-through hole 311 and the fourth sub-through hole 312 are connected to each other, and the third sub-through hole 311 and the fourth sub-through hole 312 are staggered along the second direction.

[0100] Similarly, the third sub-through hole 311 and the fourth sub-through hole 312 are staggered along the second direction, that is, the third sub-through hole 311 and the fourth sub-through hole 312 are staggered along the height direction of the heat exchanger 10, so that the third sub-through hole 311 and the fourth sub-through hole 312 have a height difference, for example, the third sub-through hole 311 is higher than the fourth sub-through hole 312, so that the third sub-through hole 311 can be clamped with one end of the first flat tube 111 close to the second bent tube 114, and the fourth sub-through hole 312 can be clamped with one end of the second flat tube 112 close to the second bent tube 114.

[0101] Then, by also designing the first mounting hole 210 as a special-shaped hole, the third first sub-through hole 211 and the fourth sub-through hole 312 are respectively clamped with the end of the first flat tube 111 and the end of the second flat tube 112, the second mounting plate 300 and the heat exchange tube 100 can be firmly connected together, ensuring the firmness of the connection between the second mounting plate 300 and the heat exchange tube 100, preventing the two from easily detaching, and no other connection methods are needed. The assembly steps are simple, which further improves the production efficiency of the heat exchanger 10.

[0102] The heat exchange tube 100 includes a first end and a second end that are opposite to each other along a second direction. The heat exchanger 10 also includes an input tube 400 and an output tube 500, wherein the input tube 400 is connected to one of the tube bodies 110 closest to the first end, and the output tube 500 is connected to one of the tube bodies 110 closest to the second end.

[0103] It can be understood that the input pipe 400 is used as an input carrier connected to the heat exchange tube 100 to input the refrigerant into the heat exchange tube 100. When the heat exchanger 10 is an evaporator, the input pipe 400 is used to connect to the throttling element of the refrigeration system of the refrigeration equipment. The output pipe 500 is used as an output carrier connected to the heat exchange tube 100 to output the refrigerant from the heat exchange tube 100. When the heat exchanger 10 is an evaporator, the output pipe 500 is used to connect to the compressor of the refrigeration system of the refrigeration equipment.

[0104] Since the heat exchange tube 100 of the embodiment of the present application is formed by integral bending, only one input tube 400 and one output tube 500 need to be provided to realize the input and output of the refrigerant in the heat exchange tube 100 .

[0105] The present application also provides a refrigeration device. Specifically, the refrigeration device provided in the present application may be a refrigerator / freezer, an air conditioner, or the like. The refrigeration device includes a refrigeration system, and the refrigeration system may include a heat exchanger 10 conceived according to any of the above embodiments.

[0106] The refrigeration equipment provided by the embodiment of the utility model adopts the heat exchanger conceived in any of the above embodiments. The heat exchanger is arranged by setting the axis of the first flat tube and the axis of the second flat tube to be inclined along the second direction, that is, the first flat tube and the second flat tube are tilted and misaligned along the second direction, rather than being flush with each other, which is different from the traditional evaporator. The second flat tube of each tube body is also arranged to be bent and connected with the first flat tube of the tube body adjacent to it, that is, multiple tube bodies are connected end to end along the second direction, so that the overall shape of the heat exchange tube is a "double staircase". Then, the heat exchange tube as a whole can be formed by only one raw material tube through multiple bendings. Compared with the flat tube evaporator in the related art, the number of components is greatly reduced, and the connection and assembly steps between multiple components, such as welding steps, are reduced, thereby greatly simplifying the assembly process of the heat exchanger, which can effectively improve the production efficiency of the heat exchanger, and thus improve the production efficiency of the refrigeration equipment. Furthermore, in the embodiment of the present application, the first flat tube and the second flat tube are offset along the second direction through the above-mentioned arrangement. When the airflow passes through the heat exchange tube, a turbulent effect can be generated on the airflow, thereby enhancing the heat exchange between the airflow and the heat exchange tube, and improving the heat exchange efficiency of the heat exchanger, thereby improving the refrigeration efficiency of the refrigeration equipment.

[0107] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A heat exchanger, characterized in that: The heat exchange tube comprises a plurality of tube bodies, each of the tube bodies comprises a first flat tube and a second flat tube connected to the first flat tube by bending, the first flat tube and the second flat tube of the same tube body are arranged along a first direction, and the axis of the first flat tube and the axis of the second flat tube of the same tube body are inclined to each other along a second direction; wherein the second direction intersects with the first direction; Furthermore, the plurality of tubes are arranged along the second direction, and the second flat tube of each tube is bent and connected to the first flat tube of the adjacent tube.

2. The heat exchanger according to claim 1, characterized in that: In the same tube body, the orthographic projection of the axis of the first flat tube on the first projection plane and the orthographic projection of the axis of the second flat tube on the first projection plane are obliquely intersected, and the orthographic projection of the axis of the first flat tube on the second projection plane and the orthographic projection of the axis of the second flat tube on the second projection plane are parallel to each other; wherein the first projection plane is parallel to the axis of each of the first flat tubes, and the second projection plane is perpendicular to the first projection plane.

3. The heat exchanger according to claim 2, characterized in that: In each of the tube bodies, the width of the first flat tube along the second direction is greater than the width of the first flat tube along the first direction, and the width of the second flat tube along the second direction is greater than the width of the second flat tube along the first direction.

4. The heat exchanger according to claim 2, characterized in that: The axes of the two first flat tubes of every two adjacent tube bodies are parallel to each other, and / or the axes of the two second flat tubes of every two adjacent tube bodies are parallel to each other.

5. The heat exchanger according to any one of claims 1 to 4, characterized in that: The heat exchange tube further comprises a plurality of heat exchange fins, and the heat exchange fins are integrally formed on the surface of the tube body by a shovel tooth process.

6. The heat exchanger according to claim 5, characterized in that The first flat tube includes a first surface and a second surface which are opposite to each other along the first direction, and the second flat tube includes a third surface and a fourth surface which are opposite to each other along the first direction; Each of the heat exchange fins extends along the second direction, wherein part of the heat exchange fins is connected to the first surface and the second surface, and part of the heat exchange fins is connected to the third surface and the fourth surface.

7. The heat exchanger according to claim 5, characterized in that Each of the heat exchange fins includes a first sub-fin and a second sub-fin, the first sub-fin and the second sub-fin are arranged along the second direction, the first sub-fin is inclined at a first angle relative to the tube body surface, and the second sub-fin is inclined at a second angle relative to the first sub-fin surface.

8. The heat exchanger according to any one of claims 1 to 4, characterized in that: A first bent tube is connected between the first flat tube and the second flat tube of the same tube body, and a second bent tube is connected between the first flat tube and the second flat tube of two adjacent tube bodies; The heat exchanger also includes: A first mounting plate is provided with a plurality of first mounting holes, the plurality of first mounting holes are arranged at intervals along the second direction, the first mounting plate is clamped to one end of the heat exchange tube provided with the first bent tube through the first mounting hole, so that each of the first bent tubes is passed through one of the first mounting holes; and The second mounting plate is provided with a plurality of second mounting holes, and the plurality of second mounting holes are spaced apart along the second direction. The second mounting plate is connected to one end of the heat exchange tube provided with the second bent tube through the second mounting hole, so that each of the second bent tubes is passed through one of the second mounting holes.

9. The heat exchanger according to claim 8, characterized in that The first mounting hole comprises a first sub-through hole and a second sub-through hole communicating with the first sub-through hole, and the first sub-through hole and the second sub-through hole are staggered along the second direction; and / or, The second mounting hole includes a third sub-through hole and a fourth sub-through hole communicating with the third sub-through hole, and the third sub-through hole and the fourth sub-through hole are staggered along the second direction.

10. Refrigeration equipment, characterized in that: Comprising a heat exchanger according to any one of claims 1 to 9.

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