Micro-channel heat exchanger assembly and air conditioner

Abstract

The utility model discloses a micro-channel heat exchanger assembly and an air conditioner, and the micro-channel heat exchanger assembly comprises a micro-channel heat exchanger which comprises a plurality of U-shaped flat pipes which are arranged in parallel; the splicing structure is used for fixing a plurality of U-shaped flat pipes together and comprises a top plate and two end plates, the top plate covers the tops of the U-shaped flat pipes, and the two end plates are installed at the ends of the two sides of the U-shaped flat pipes respectively and fixedly connected with the U-shaped flat pipes. According to the micro-channel heat exchanger assembly, the flowing direction of a refrigerant entering from the bottom and exiting from the top in an original linear micro-channel heat exchanger is changed, the refrigerant enters the U-shaped flat pipes from the bottom and returns to the U-shaped flat pipes at the bottom through top turning to flow out, and on one hand, the refrigeration area is increased; and on the other hand, the U-shaped flat pipes change the flow direction of the refrigerant, then the position of the superheat degree is changed, the problems that air outlet of a linear micro-channel heat exchanger is not uniform, and the performance of the heat exchanger is insufficient are solved, and the refrigeration effect and energy efficiency of the air conditioner are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of heat exchangers, and in particular relates to a microchannel heat exchanger component and an air conditioner. Background Art

[0002] In the field of air conditioning, the heat exchanger is one of the core components, and its performance directly affects the cooling effect and energy consumption of the air conditioner. Although traditional fin heat exchangers and plate heat exchangers are widely used, with the continuous development of technology, microchannel heat exchangers have gradually become a hot research topic. Microchannel heat exchangers are increasingly widely used in the field of air conditioning due to their efficient cooling performance and advantages such as energy saving and environmental protection. However, with the increase in cooling capacity, the existing one-line microchannel heat exchanger is limited by the height of the air conditioning unit, and the cooling area cannot be further increased, which has become a problem that needs to be solved urgently. Utility Model Content

[0003] The utility model aims to provide a microchannel heat exchanger component and an air conditioner which can effectively increase the refrigeration area without changing the height of the air conditioner unit.

[0004] In order to solve the above technical problems, the technical solution provided by the utility model is:

[0005] A microchannel heat exchanger assembly, comprising:

[0006] A microchannel heat exchanger includes a plurality of U-shaped flat tubes arranged in parallel;

[0007] The assembling structure for fixing the plurality of U-shaped flat tubes together comprises a top plate and two end plates, wherein the top plate is covered on the top of the plurality of U-shaped flat tubes, and the two end plates are respectively installed on the two side ends of the plurality of U-shaped flat tubes and fixedly connected to the U-shaped flat tubes.

[0008] Furthermore, it also includes side plates, and the side plates are installed on both sides of the U-shaped flat tube. The side plates of adjacent U-shaped flat tubes are connected together, and the side plates close to the end plates are connected together with the end plates.

[0009] Furthermore, the side plate is provided with a horizontal waist-shaped hole or a vertical waist-shaped hole.

[0010] Furthermore, the end plate is in a "concave" shape, including a first sub-end plate, a second sub-end plate and a third sub-end plate, and the first sub-end plate, the second sub-end plate and the third sub-end plate are connected together in sequence.

[0011] Furthermore, the first sub-end plate is provided with one or more of a horizontal waist-shaped hole and a vertical waist-shaped hole.

[0012] Furthermore, the third sub-end plate is also provided with one or more of horizontal waist-shaped holes and vertical waist-shaped holes.

[0013] Furthermore, the microchannel heat exchanger further includes a first header and a second header, wherein the first header is horizontally arranged at the inlet end of the U-shaped flat tube, and the second header is horizontally arranged at the outlet end of the U-shaped flat tube.

[0014] Furthermore, it also includes a header inlet and a header outlet, the header inlet is connected to the first header, and the header outlet is connected to the second header.

[0015] Furthermore, it also includes a fixing structure for mounting the microchannel heat exchanger on other components, and the fixing structure is fixedly connected to the microchannel heat exchanger and / or the assembling structure.

[0016] Furthermore, the fixing structure includes a bracket and a connecting plate, the bracket is installed at the bottom of the first header and the second header, and the connecting plate is fixedly connected to a plurality of the brackets.

[0017] Furthermore, a vertical waist-shaped hole is provided on the connecting plate.

[0018] Furthermore, the fixing structure includes a fixing plate, and the fixing plate is fixed together with the side surface of the U-shaped flat tube.

[0019] Furthermore, it also includes a sealing member installed between the top plate and the top of the U-shaped flat tube.

[0020] An air conditioner comprises the above-mentioned microchannel heat exchanger assembly.

[0021] Beneficial effects of the utility model:

[0022] The microchannel heat exchanger assembly changes the flow direction of the refrigerant in the original straight microchannel heat exchanger from bottom to top, allowing the refrigerant to enter the U-shaped flat tube from the bottom, turn at the top and return to the bottom of the U-shaped flat tube to flow out, which increases the cooling area on the one hand; on the other hand, the U-shaped flat tube changes the flow direction of the refrigerant, thereby changing the position of the superheat, solving the problems of uneven air outlet and insufficient heat exchanger performance of the straight microchannel heat exchanger, improving the cooling effect and energy efficiency of the air conditioner, and meeting the user's demand for comfort. The assembly structure is compact, and multiple U-shaped flat tubes can be fixed together to form an integral structure installed inside the air conditioning unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of a microchannel heat exchanger assembly of the utility model in one embodiment;

[0024] Figure 2An exploded view of a microchannel heat exchanger assembly of the utility model in one embodiment;

[0025] Figure 3 for Figure 2 A is a partial enlarged schematic diagram;

[0026] Figure 4 It is a side view of a U-shaped flat tube of the utility model in one embodiment;

[0027] Figure 5 A schematic diagram of the refrigerant flow direction of a microchannel heat exchanger of the utility model in one embodiment;

[0028] Figure 6 for Figure 2 A partial enlarged schematic diagram of B in the middle;

[0029] Figure 7 It is a schematic diagram of the three-dimensional structure of the microchannel heat exchanger assembly of the utility model in another embodiment.

[0030] Reference numerals include:

[0031] 100—microchannel heat exchanger 110—U-shaped flat tube 120—first header

[0032] 121—header inlet 130—second header 131—header outlet

[0033] 200—assembly structure 210—top plate 220—seal

[0034] 230—side plate 241—horizontal waist-shaped hole 242—vertical waist-shaped hole

[0035] 250—end plate 251—first sub-end plate 252—second sub-end plate

[0036] 253—third sub-end plate 300—fixed structure 310—bracket

[0037] 320—Connecting plate 330—Fixed plate DETAILED DESCRIPTION

[0038] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0039] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0040] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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.

[0041] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0042] Please refer to Figure 1-Figure 3 , is a preferred embodiment of the utility model, the microchannel heat exchanger assembly comprises: a microchannel heat exchanger 100, comprising a plurality of U-shaped flat tubes 110 arranged in parallel; an assembly structure 200 for fixing the plurality of U-shaped flat tubes 110 together, comprising a top plate 210 and two end plates 250, the top plate 210 is covered on the top of the plurality of U-shaped flat tubes 110, the two end plates 250 are respectively installed on the two side ends of the plurality of U-shaped flat tubes 110, and are fixedly connected with the U-shaped flat tubes 110. The microchannel heat exchanger assembly changes the flow direction of the refrigerant in the original straight-line microchannel heat exchanger from bottom to top, allowing the refrigerant to enter the U-shaped flat tubes 110 from the bottom, turn through the top and return to the bottom of the U-shaped flat tubes 110 to flow out, on the one hand, increasing the cooling area; on the other hand, the U-shaped flat tubes 110 change the flow direction of the refrigerant, thereby changing the position of the superheat, solving the problem of uneven air discharge of the straight-line microchannel heat exchanger. The assembly structure 200 is compact and can fix a plurality of the U-shaped flat tubes 110 together to form an integral structure installed inside the air conditioning unit.

[0043] In one embodiment of the present application, the microchannel heat exchanger 100 includes a U-shaped flat tube 110, a first header 120 and a second header 130. Figure 2-Figure 4As shown, the U-shaped flat tube 110 is in a "U" shape as a whole. In one embodiment of the present application, the microchannel heat exchanger assembly includes two U-shaped flat tubes 110 arranged side by side. The first header 120 is horizontally arranged at the inlet end of the U-shaped flat tube 110, and the refrigerant enters the U-shaped flat tube 110 through the first header 120. The second header 130 is horizontally arranged at the outlet end of the U-shaped flat tube 110, and the refrigerant in the U-shaped flat tube 110 flows out through the second header 130.

[0044] The microchannel heat exchanger 100 further includes a header inlet 121 and a header outlet 131. Specifically, the header inlet 121 is connected to the first header 120, and the header outlet 131 is connected to the second header 130. The present application does not limit the specific positions of the header inlet 121 and the header outlet 131, which can be set at the bottom of the first header 120 and the second header 130, or at the top of the U-shaped flat tube 110; the header inlet 121 and the header outlet 131 can be set at one end of the U-shaped flat tube 110, or at both ends of the U-shaped flat tube 110.

[0045] like Figure 5 As shown, the refrigerant enters the U-shaped flat tube 110 through the header inlet 121 and the first header 120 in sequence. After entering the U-shaped flat tube 110 from the bottom, the refrigerant turns back to the bottom U-shaped flat tube 110 through the top, and then flows out through the second header 130 and the header outlet 131 in sequence.

[0046] The assembly structure 200 is used to fix the plurality of U-shaped flat tubes 110 together, and can also provide a certain degree of sealing environment for the U-shaped flat tubes 110. Specifically, Figure 2 and Figure 3 As shown, in one embodiment of the present application, the assembly structure 200 mainly includes a top plate 210 and two end plates 250. The top plate 210 is in a flat plate shape and is covered on the top of the plurality of U-shaped flat tubes 110. In another embodiment of the present application, in order to improve the sealing performance of the assembly structure 200, the assembly structure 200 further includes a sealing member 220, which is installed between the top plate 210 and the top of the U-shaped flat tube 110 to enhance the sealing performance of the assembly structure 200. Preferably, the sealing member 220 is a sealing plate.

[0047] The two end plates 250 are respectively installed on the two side ends of the plurality of U-shaped flat tubes 110, with the upper ends fixedly connected to the top plate 210, and the side surfaces fixedly connected to the U-shaped flat tubes 110. Specifically, the end plates 250 are in a "concave" shape, including a first sub-end plate 251, a second sub-end plate 252, and a third sub-end plate 253. The first sub-end plate 251, the second sub-end plate 252, and the third sub-end plate 253 are sequentially connected together and are arranged perpendicular to each other to form a "concave" shape. Among them, the first sub-end plate 251 is fixedly connected to the top plate 210, and the first sub-end plate 251 and the third sub-end plate 253 are respectively fixedly connected to the U-shaped flat tubes 110.

[0048] In order to connect two adjacent U-shaped flat tubes 110 and to connect the U-shaped flat tube 110 and the end plate 250 together, in one embodiment of the present application, the assembly structure 200 further includes a side plate 230. Specifically, the side plates 230 are installed on both sides of the U-shaped flat tube 110, the side plates 240 of the adjacent U-shaped flat tubes 110 are connected together, and the side plates 230 close to the end plate 250 are connected to the end plate 250.

[0049] In the present application, multiple U-shaped flat tubes 110 are arranged side by side. Since the overall processing error of the U-shaped flat tubes 110 is large, tolerance design is required. In this embodiment, a horizontal waist-shaped hole 241 is opened on the side plate 230, which is specifically opened on the side plate 230 close to another U-shaped flat tube 110, that is, on the two side plates 230 of the two adjacent U-shaped flat tubes 110, at least one side plate 230 is opened with a horizontal waist-shaped hole 241 to ensure that one end thereof is aligned.

[0050] In order to further adjust the vertical and horizontal deviations of the microchannel heat exchanger 100, the end plate 250 is provided with horizontal waist-shaped holes 241 and vertical waist-shaped holes 242. Specifically, the first sub-end plate 251 is provided with vertical waist-shaped holes 242, and the third sub-end plate 253 is provided with horizontal waist-shaped holes 241.

[0051] In order to facilitate the installation of the microchannel heat exchanger 100 on other components in the air conditioner, the microchannel heat exchanger assembly further includes a fixing structure 300. The fixing structure 300 is fixedly connected to the microchannel heat exchanger 100 and / or the assembling structure 200.

[0052] In one embodiment of the present application, Figure 2 and Figure 6As shown, the fixing structure 300 includes a plurality of brackets 310 and a connecting plate 320. The plurality of brackets 310 are installed at the bottom of the first header 120 and the second header 130, and the connecting plate 320 is fixedly connected to the plurality of brackets 310, and the plurality of headers are connected together through the brackets 310 and the connecting plate 320.

[0053] Preferably, the connecting plate 320 is provided with vertical waist-shaped holes 242 for absorbing the height error of the plurality of U-shaped flat tubes 110. The tolerance structure design of the horizontal waist-shaped holes 241 and the vertical waist-shaped holes 242 absorbs the processing error of the microchannel heat exchanger 100 and is suitable for mass production.

[0054] In one embodiment of the present application, Figure 7 As shown, the fixing structure 300 includes a fixing plate 330 , and the fixing plate 330 is fixed to the side surface of the U-shaped flat tube 110 .

[0055] The present application also includes an air conditioner, which includes the above-mentioned microchannel heat exchanger assembly.

[0056] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, many changes can be made in the specific implementation methods and application scopes based on the ideas of the present invention. As long as these changes do not deviate from the concept of the present invention, they all belong to the protection scope of the present invention.

Claims

1. A microchannel heat exchanger assembly, characterized in that: include: A microchannel heat exchanger (100) comprises a plurality of U-shaped flat tubes (110) arranged in parallel; An assembling structure (200) for fixing a plurality of the U-shaped flat tubes (110) together comprises a top plate (210) and two end plates (250), wherein the top plate (210) is arranged on the top of the plurality of the U-shaped flat tubes (110), and the two end plates (250) are respectively installed on the two side ends of the plurality of the U-shaped flat tubes (110) and are fixedly connected to the U-shaped flat tubes (110).

2. The microchannel heat exchanger assembly according to claim 1, characterized in that: It also includes side plates (230), and the side plates (230) are installed on both sides of the U-shaped flat tube (110), the side plates (230) of adjacent U-shaped flat tubes (110) are connected together, and the side plates (230) close to the end plates (250) are connected together with the end plates (250).

3. The microchannel heat exchanger assembly according to claim 2, characterized in that: The side plate (230) is provided with a horizontal waist-shaped hole (241) or a vertical waist-shaped hole (242).

4. The microchannel heat exchanger assembly according to claim 3, characterized in that: The end plate (250) is in a "concave" shape, and comprises a first sub-end plate (251), a second sub-end plate (252) and a third sub-end plate (253); the first sub-end plate (251), the second sub-end plate (252) and the third sub-end plate (253) are connected together in sequence.

5. The microchannel heat exchanger assembly according to claim 4, characterized in that: The first sub-end plate (251) is provided with one or more of a horizontal waist-shaped hole (241) and a vertical waist-shaped hole (242).

6. The microchannel heat exchanger assembly according to claim 5, characterized in that: The third sub-end plate (253) is also provided with one or more of a horizontal waist-shaped hole (241) and a vertical waist-shaped hole (242).

7. The microchannel heat exchanger assembly according to any one of claims 1 to 6, characterized in that: The microchannel heat exchanger (100) further comprises a first header (120) and a second header (130), wherein the first header (120) is horizontally arranged at the inlet end of the U-shaped flat tube (110), and the second header (130) is horizontally arranged at the outlet end of the U-shaped flat tube (110).

8. The microchannel heat exchanger assembly according to claim 7, characterized in that: It also includes a header inlet (121) and a header outlet (131), wherein the header inlet (121) is connected to the first header (120), and the header outlet (131) is connected to the second header (130).

9. The microchannel heat exchanger assembly according to claim 8, characterized in that: It also includes a fixing structure (300) for installing the microchannel heat exchanger (100), wherein the fixing structure (300) is fixedly connected to the microchannel heat exchanger (100) and / or the assembling structure (200).

10. The microchannel heat exchanger assembly according to claim 9, characterized in that: The fixing structure (300) comprises a bracket (310) and a connecting plate (320), wherein the bracket (310) is installed at the bottom of the first header (120) and the second header (130), and the connecting plate (320) is fixedly connected to a plurality of the brackets (310).

11. The microchannel heat exchanger assembly according to claim 10, characterized in that: The connecting plate (320) is provided with a vertical waist-shaped hole (242).

12. The microchannel heat exchanger assembly according to claim 9, characterized in that: The fixing structure (300) comprises a fixing plate (330), and the fixing plate (330) is fixed together with the side surface of the U-shaped flat tube (110).

13. The microchannel heat exchanger assembly according to claim 1, characterized in that: It also includes a sealing member (220), wherein the sealing member (220) is installed between the top plate (210) and the top of the U-shaped flat tube (110).

14. An air conditioner, characterized in that: A microchannel heat exchanger assembly comprising any one of claims 1-13.

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