Connecting device and heat exchanger

Abstract

The present invention provides a connecting device and a heat exchanger. The connecting device includes a first main body and a second main body, and at least one of the first main body and the second main body is provided with an extended positioning portion. The first main body and the second main body are fastened and sealed together, and a plurality of mutually isolated connecting cavities are formed by surrounding. Both opposite sides of the connecting cavity are provided with through holes communicating with the connecting cavity. After the first main body and the second main body of the connecting device of the present invention are fastened, they are sealed and fixed together. During actual connection, the flat tubes are inserted into the connecting cavity from the through holes on both sides of the connecting cavity, so that the new microchannel heat exchanger is not limited by the length of the stamping-formed flat tubes, can meet the customer requirements and expand the product application range.

Description

Technical Field

[0001] The present invention relates to the technical field of heat exchange devices, and more particularly, to a connecting device and a heat exchanger. Background Art

[0002] The flat tubes of conventional microchannel heat exchangers are microchannel flat tubes formed by hot extrusion. The length of conventional microchannel heat exchangers is limited by the length of the microchannel flat tubes and the process capabilities. The flat tubes of new microchannel heat exchangers are formed flat tubes. Due to the limitations of the load-bearing capacity of the feeder and the tonnage of the punching press, the width of the feeding port, and the table size, the length of the stamping-formed flat tubes is limited.

[0003] The refrigerant condensation pressure range of household air conditioners is between 2 MPa and 4.5 MPa. The connecting devices with conventional round tube splicing or rectangular tube splicing structures cannot meet the pressure resistance and bursting requirements. Summary of the Invention

[0004] The main object of the present invention is to provide a connecting device and a heat exchanger to solve the problem that the length of the stamping-formed flat tubes of heat exchangers in the prior art is limited.

[0005] To achieve the above object, according to one aspect of the invention, a connecting device is provided, including a first main body and a second main body. At least one of the first main body and the second main body is provided with an extended positioning portion. The first main body and the second main body are fastened and sealed and fixed to enclose and form a plurality of mutually isolated connecting cavities, and both opposite sides of the connecting cavity have through holes communicating with the connecting cavity.

[0006] Further, both the first main body and the second main body include a first flat plate and a second flat plate provided on the side of the first flat plate. A plurality of first partition portions are spaced on the first flat plate, and the through holes are provided at positions on the first flat plate between two adjacent first partition portions.

[0007] Further, the first partition portion is a first partition protrusion, and the corresponding first partition protrusions on the first main body and the second main body are welded and sealed to isolate two adjacent connecting cavities.

[0008] Further, the first partition protrusion is a first stamping protrusion, and the extended positioning portion is bent and hooked in the back groove of the first stamping protrusion.

[0009] Further, the first side of the second flat plate is vertically provided on the first side of the first flat plate, and the extended positioning portion is provided on the second side of the second flat plate opposite to the first side.

[0010] Further, the first body includes a third flat plate, a fourth flat plate, and a fifth flat plate. The fourth flat plate and the fifth flat plate are respectively disposed on opposite sides of the third flat plate. A plurality of second partition portions are provided in the length direction of the third flat plate, and the through holes are provided at positions of the third flat plate between two adjacent second partition portions.

[0011] Further, a first side edge of the fourth flat plate is vertically disposed on a first side edge of the third flat plate, a second side edge of the fifth flat plate is vertically disposed on a second side edge of the third flat plate opposite to the first side edge, and extension positioning portions are provided on second side edges of the fourth flat plate opposite to the first side edge and on second side edges of the fifth flat plate opposite to the first side edge.

[0012] Further, the second body includes a sixth flat plate. A plurality of third partition portions are provided in the length direction of the sixth flat plate, and the through holes are provided at positions of the sixth flat plate between two adjacent third partition portions.

[0013] Further, the second partition portion is a second partition protrusion, the third partition portion is a third partition protrusion, and the corresponding second partition protrusion and third partition protrusion are welded and sealed to isolate adjacent connection cavities.

[0014] Further, the second partition protrusion is a second stamping protrusion, the third partition protrusion is a third stamping protrusion, and the extension positioning portion on the first body is bent and hooked in a back groove of the third stamping protrusion.

[0015] Further, the extension positioning portion is an extension positioning rib.

[0016] Further, the thickness D of the connecting device is not less than 10 mm.

[0017] According to another aspect of the present invention, a heat exchanger is provided, including a connecting device, and the connecting device is the above-mentioned connecting device.

[0018] By applying the technical solution of the present invention, the first body and the second body of the connecting device of the present invention are sealed and fixed together after being buckled. During actual connection, the flat tubes are inserted into the connection cavity from through holes on both sides of the connection cavity, so that the new microchannel heat exchanger is not limited by the length of the stamping-formed flat tubes, can meet customer requirements, and expand the product application range. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The specification drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0020] Figure 1 Explosive view of the first embodiment of the connecting device of the present invention is schematically shown;

[0021] Figure 2 Stereogram of the first embodiment of the connecting device of the present invention is schematically shown;

[0022] Figure 3 Explosive view of the second embodiment of the connecting device of the present invention is schematically shown;

[0023] Figure 4 Stereogram of the second embodiment of the connecting device of the present invention is schematically shown;

[0024] Figure 5 Cross-sectional view of the heat exchanger of the present invention is schematically shown;

[0025] Figure 6 Schematically shows Figure 5 An enlarged view of region M in

[0026] Wherein, the above-mentioned drawings include the following reference numerals:

[0027] 10, first main body; 11, first flat plate; 12, second flat plate; 13, third flat plate; 14, fourth flat plate; 15, fifth flat plate; 16, first partition portion; 20, second main body; 21, sixth flat plate; 17, second partition portion; 23, third partition portion; 30, extending positioning portion; 40, through hole; 50, connecting cavity; 60, flat tube; 70, header pipe. Detailed implementation manners

[0028] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0029] It should be noted that the terms used herein are only for describing specific implementation manners and are not intended to limit the exemplary implementation manners according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0030] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationship. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0031] See Figures 1 to 6 As shown, according to an embodiment of the present invention, a heat exchanger is provided. The heat exchanger in this embodiment includes a header 70, flat tubes 60, and a connecting device. Among them, there are multiple flat tubes 60, and the multiple flat tubes 60 are arranged in layers. Both ends of the flat tubes 60 are respectively connected to the header 70. When it is necessary to expand the size of the heat exchanger, only multiple flat tubes 60 need to be added, and the flat tubes 60 are butted through the connecting device.

[0032] Specifically, the connecting device in this embodiment includes a first main body 10 and a second main body 20. At least one of the first main body 10 and the second main body 20 is provided with an extended positioning portion 30. The first main body 10 and the second main body 20 are buckled and sealed and fixed, and enclose to form a plurality of mutually isolated connecting cavities 50. Both opposite sides of the connecting cavity 50 have through holes 40 communicating with the connecting cavity 50.

[0033] After the first main body 10 and the second main body 20 of the connecting device are buckled, they are sealed and fixed together. During actual connection, the flat tubes 60 are inserted into the connecting cavity 50 from the through holes 40 on both sides of the connecting cavity 50 to realize the butt joint of the flat tubes, so that the new microchannel heat exchanger is not limited by the length of the stamping-formed flat tubes, and can meet customer requirements and expand the product application range.

[0034] See Figure 1 and Figure 2As shown, in the first embodiment of the present invention, the first body 10 and the second body 20 both include a first plate 11 and a second plate 12 arranged on the side of the first plate 11, and a plurality of first partition parts 16 are arranged at intervals on the first plate 11, and a through hole 40 is arranged at a position between two adjacent first partition parts 16 of the first plate 11. When the first body 10 and the second body 20 are buckled together, the first partition part 16 is a first partition protrusion, and the corresponding first partition protrusions on the first body 10 and the second body 20 are welded and sealed, so that a connecting cavity 50 can be enclosed between two adjacent first partition parts 16, and then connected to the flat tube 60 through the through holes 40 on both sides of the connecting cavity 50.

[0035] In this embodiment, the first partition protrusion is a first stamping protrusion, and the extended positioning portion 30 is bent and hooked in the back groove of the first stamping protrusion. It has a simple structure, can reduce the manufacturing cost of the connecting device, and can meet the requirements of mass production.

[0036] In this embodiment, the first body 10 and the second body 20 are symmetrical structures, which are convenient for processing and can adjust the number of connecting units to meet different customer needs and standardized settings.

[0037] Specifically, in this embodiment, the first side of the second plate 12 is vertically arranged on the first side of the first plate 11, and the extended positioning portion 30 is arranged on the second side of the second plate 12 opposite to the first side. When the first body 10 and the second body 20 are buckled together, a rectangular connection device is formed, and then the second body 20 is tightly embraced by the extended positioning portion 30 arranged on the first body 10, and the first body 10 is tightly embraced by the extended positioning portion 30 arranged on the second body 20, and the first body 10 and the second body 20 are welded and fixed together, which can meet the pressure resistance and explosion requirements of the heat exchanger.

[0038] The extended positioning portion 30 in this embodiment is an extended positioning rib. In actual design, the first body 10 and the second body 20 are both integrally formed structures. When the first body 10 and the second body 20 are buckled together, the extended positioning rib is bent to fix the first body 10 and the second body 20 together, and then the first body 10 and the second body 20 are welded and fixed together, which can ensure the structural strength of the entire connecting device.

[0039] The thickness D of the connecting device in this embodiment is less than 10 mm, which reduces the influence of the connecting device on the heat exchange performance of the heat exchanger.

[0040] See also Figure 3 and Figure 4As shown, according to the second embodiment of the present invention, a heat exchanger is provided. The heat exchanger in this embodiment is basically the same in structure as the heat exchanger in the first embodiment. The difference is that the first body 10 in this embodiment includes a third flat plate 13, a fourth flat plate 14, and a fifth flat plate 15. The fourth flat plate 14 and the fifth flat plate 15 are respectively arranged on opposite sides of the third flat plate 13. A plurality of second partition parts 17 are arranged in the length direction of the third flat plate 13, and through holes 40 are arranged at positions of the third flat plate 13 between adjacent second partition parts 17.

[0041] Specifically, the first side edge of the fourth flat plate 14 is vertically arranged on the first side edge of the third flat plate 13, the second side edge of the fifth flat plate 15 is vertically arranged on the second side edge of the third flat plate 13 opposite to the first side edge, and an extension positioning part 30 is arranged on the second side edge of the fourth flat plate 14 opposite to the first side edge, and an extension positioning part 30 is arranged on the second side edge of the fifth flat plate 15 opposite to the first side edge.

[0042] The second body 20 includes a sixth flat plate 21. A plurality of third partition parts 23 are arranged in the length direction of the sixth flat plate 21, and through holes 40 are arranged at positions of the sixth flat plate 21 between adjacent third partition parts 23.

[0043] Similar to the first embodiment, after the first body 10 and the second body 20 in this embodiment are buckled together, a cuboid is formed. The second partition part 17 is a second partition protrusion, and the third partition part 23 is a third partition protrusion. The corresponding second partition protrusion and third partition protrusion are welded and sealed and fixed, so that connection cavities 50 are formed between adjacent second partition parts 17 and between adjacent third partition parts 23, and are connected to flat tubes 60 through the through holes 40 on both sides of the connection cavities 50.

[0044] Preferably, the second partition protrusion in this embodiment is a second stamping protrusion, and the third partition protrusion is a third stamping protrusion. The extension positioning part 30 on the first body 10 is bent and hooked in the back groove of the third stamping protrusion, with a simple structure and can further meet the pressure resistance and bursting requirements of the heat exchanger.

[0045] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0046] The connecting device of the present invention adopts double-sided compounding. After brazing, it can meet the requirements of pressure resistance and bursting, enabling the new microchannel heat exchanger not to be limited by the length of the stamping-formed flat tube, and can meet customer needs and expand the product application range. It can be seen that the present invention lengthens the length of the formed flat tube microchannel heat exchanger and increases the application range; the connecting device is manufactured by stamping process, which can reduce the manufacturing cost and meet the requirements of mass production; the coupling unit of the connecting device adopts a symmetrical design, which can adjust the number of coupling units to adapt to different customer needs and standardized design; the thickness of the connecting device is less than 10 mm, reducing the influence of the connecting piece on the heat transfer performance of the microchannel heat exchanger.

[0047] For the sake of convenience in description, spatial relative terms, such as "above", "over", "on the upper surface", "upper", etc., can be used here to describe the spatial position relationship between one device or feature and other devices or features as shown in the figure. It should be understood that the spatial relative terms are intended to cover different orientations in use or operation in addition to the orientation described in the figure for the device. For example, if the device in the figure is inverted, the device described as "above" or "over" other devices or structures will then be positioned "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding explanations should be made for the spatial relative descriptions used here.

[0048] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of differentiating the corresponding components. Without additional statements, the above terms have no special meanings, and thus should not be construed as limiting the protection scope of the present invention.

[0049] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A connecting device, characterized in that, It includes a first body (10) and a second body (20), at least one of the first body (10) and the second body (20) is provided with an extended positioning portion (30), the first body (10) and the second body (20) are fastened, sealed and fixed, and enclose to form a plurality of mutually isolated connection cavities (50), and both opposite sides of the connection cavity (50) have through holes (40) communicating with the connection cavity (50). The first body (10) and the second body (20) include a partition portion, the partition portion is a partition protrusion, and the corresponding partition protrusions on the first body (10) and the second body (20) are welded and sealed to isolate two adjacent connection cavities (50). The partition protrusion has a back groove, and the extended positioning portion (30) is bent and hooked in the back groove of the partition protrusion. During actual connection, the flat tube of the microchannel heat exchanger is inserted into the connection cavity (50) from the through holes (40) on both sides of the connection cavity (50). The extended positioning portion (30) is an extended positioning rib, and the thickness D of the connection device is not less than 10 mm.

2. The connecting device according to claim 1, characterized in that, Both the first body (10) and the second body (20) include a first flat plate (11) and a second flat plate (12) arranged on the side of the first flat plate (11). A plurality of first partition portions (16) are arranged at intervals on the first flat plate (11), and the through hole (40) is arranged at a position on the first flat plate (11) between two adjacent first partition portions (16).

3. The connecting device according to claim 2, characterized in that, The first partition portion (16) is a first partition protrusion, the first partition protrusion is a first stamping protrusion, and the extended positioning portion (30) is bent and hooked in the back groove of the first stamping protrusion.

4. The connecting device according to claim 2, characterized in that, The first side of the second flat plate (12) is vertically arranged on the first side of the first flat plate (11), and the extended positioning portion (30) is arranged on the second side of the second flat plate (12) opposite to the first side.

5. The connecting device according to claim 1, characterized in that, The first body (10) includes a third flat plate (13), a fourth flat plate (14) and a fifth flat plate (15). The fourth flat plate (14) and the fifth flat plate (15) are respectively arranged on opposite sides of the third flat plate (13). A plurality of second partition portions (17) are arranged in the length direction of the third flat plate (13), and the through hole (40) is arranged at a position on the third flat plate (13) between two adjacent second partition portions (17).

6. The connecting device according to claim 5, characterized in that, The first side of the fourth flat plate (14) is vertically arranged on the first side of the third flat plate (13), the second side of the fifth flat plate (15) is vertically arranged on the second side of the third flat plate (13) opposite to the first side, the extended positioning portion (30) is arranged on the second side of the fourth flat plate (14) opposite to the first side, and the extended positioning portion (30) is arranged on the second side of the fifth flat plate (15) opposite to the first side.

7. The connecting device according to claim 5, characterized in that, The second body (20) includes a sixth flat plate (21), a plurality of third partition portions (23) are provided in the length direction of the sixth flat plate (21), and the through holes (40) are provided at positions of the sixth flat plate (21) between two adjacent third partition portions (23).

8. The connecting device according to claim 7, characterized in that, The second partition portion (17) is a second partition protrusion, the second partition protrusion is a second stamping protrusion, the third partition portion (23) is a third partition protrusion, the third partition protrusion is a third stamping protrusion, and the extending and positioning portion (30) on the first body (10) is bent and hooked in the back groove of the third stamping protrusion.

9. A heat exchanger, comprising a connecting device, characterized in that, The connecting device is the connecting device according to any one of claims 1 to 8.

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