Water cooling structure in reflow soldering closed working cavity

Abstract

The utility model relates to a water cooling structure in a reflow soldering closed working cavity, which is arranged in a working cavity, the water cooling structure and a heat source are positioned in the same working cavity, the water cooling structure comprises a plurality of refrigerant pipelines, and the flow directions of refrigerants in the refrigerant pipelines are different. The double-loop coiled pipes are adopted, refrigerants in the two coiled pipes are input and output bidirectionally at the same time, and cooling efficiency can be effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to vacuum reflow soldering furnace technical field especially a reflow soldering closed working cavity inner water cooling structure. BACKGROUND

[0002] Vacuum reflow furnace is a kind of equipment that workpiece is heated and welded, and cooled and shaped, currently, the reflow furnace on market is usually arranged to form a complete reflow furnace by multiple chambers, the temperature in multiple chambers is different, including welding part of step-up temperature and cooling part of temperature drop. In the cooling process, the welded piece needs to enter the adjacent cooling chamber gradually until the cooling temperature drops to the expected minimum temperature.

[0003] The defect of this structure is that in the process of conveying the welded piece, the welded piece is easy to appear temperature fluctuation when entering the gap between one chamber and another chamber, which affects the cooling effect. UTILITY MODEL CONTENT

[0004] The applicant provides a reflow soldering closed working cavity inner water cooling structure with reasonable structure to complete the temperature gradient change in the same chamber, and has high cooling capacity to improve product quality in view of the defects in the above existing production technology.

[0005] The technical scheme adopted by the utility model is as follows:

[0006] A reflow soldering closed working cavity inner water cooling structure is built in a working cavity, and the water cooling structure and heat source are located in the same working cavity, the water cooling structure includes multiple refrigerant pipelines, and the flow directions of refrigerant in the refrigerant pipelines are different.

[0007] As a further improvement of the above technical scheme:

[0008] Heat exchange plates are arranged in the working cavity, and the multiple refrigerant pipelines are all penetrated in the heat exchange plates.

[0009] All the refrigerant pipelines are arranged in a serpentine shape to form heat exchange surfaces parallel to the plate surfaces of the heat exchange plates inside the heat exchange plates.

[0010] The bending turning sections of the refrigerant pipes extending out of the heat exchange plates are inclined to the upper and lower sides of the heat exchange plates.

[0011] Each refrigerant pipeline is provided with an independent refrigerant inlet and a refrigerant outlet.

[0012] In the refrigerant pipeline, at least one refrigerant pipeline extends to the outside of the heat exchange plate to form a circumferential cooling section around the contour of the heat exchange plate.

[0013] The circumferential cooling section is close to the product bearing surface of the heat exchange plate, and the bending turning section is close to the other surface of the heat exchange plate.

[0014] The heat source is located below the heat exchange plate, and the bending turning section points to the heat source.

[0015] The utility model discloses the beneficial effects are as follows:

[0016] The utility model discloses compact structure, reasonable, convenient operation has complete heating, cooling structure in the working cavity, can provide corresponding heating temperature and cooling temperature to the product on the same tooling.

[0017] The utility model discloses adopt double circuit serpentine pipe, the refrigerant in two serpentine pipes, such as cooling water, two -way simultaneous input and output, can effectively improve the cooling efficiency. DRAWINGS

[0018] Figure 1 It is the schematic view of the water cooling structure of the utility model in the working cavity.

[0019] Figure 2 It is the water cooling structure schematic view of the utility model.

[0020] Figure 3 It is the structure schematic view of another view angle of the water cooling structure of the utility model.

[0021] Figure 4 It is the front view of the utility model.

[0022] 1, heat exchange plate, 2, refrigerant pipeline, 201, refrigerant import, 202, refrigerant export, 203, bending turning section, 204, circumferential cooling section. DETAILED DESCRIPTION

[0023] The specific implementation of the utility model will be described below in combination with the drawings.

[0024] As Figures 1-4 The water cooling structure in the reflow soldering closed working cavity of the embodiment is built-in the working cavity, and the water cooling structure and the heat source are located in the same working cavity, the water cooling structure includes a plurality of refrigerant pipelines 2, and the refrigerant in the refrigerant pipelines 2 flows in different directions.

[0025] The heat exchange plate 1 is arranged in the working cavity, and the plurality of refrigerant pipelines 2 all penetrate in the heat exchange plate 1.

[0026] All the refrigerant pipelines 2 are arranged in a serpentine shape, and form a heat exchange surface parallel to the plate surface of the heat exchange plate 1 in the heat exchange plate 1.

[0027] The bending turning section 203 of the refrigerant pipe extending out of the heat exchange plate 1 is inclined to the upper side and the lower side of the heat exchange plate 1.

[0028] Each refrigerant pipeline 2 is provided with an independent refrigerant import 201 and a refrigerant export 202.

[0029] At least one of the refrigerant pipelines 2 extends to outside of the heat exchange plate 1 and forms a circumferential cooling section 204 around the contour of the heat exchange plate 1.

[0030] The circumferential cooling section 204 is close to the product supporting surface of the heat exchange plate 1, and the bending turning section 203 is close to the other surface of the heat exchange plate 1.

[0031] The heat source is located below the heat exchange plate 1, and the bending turning section 203 points to the heat source.

[0032] The specific structure and working principle of the utility model are as follows:

[0033] The design premise of the utility model is that one working cavity can perform full-process cooling on a group of products to be processed without replacing the cooling working cavity.

[0034] The heat source is arranged in the working cavity, the heat exchange plate 1 is placed on the heat source, and the heat exchange plate 1 is wrapped with a plurality of refrigerant pipelines, since the refrigerant pipelines are serpentine pipes, U-shaped bending turning sections 203 are formed at both ends, the bending turning sections 203 should originally be coplanar with the heat exchange plate 1, in the utility model, the U-shaped part is bent downward, so that the bending turning sections 203 are close to the heat source, and longer circumferential cooling sections 204 are led out on the refrigerant pipelines and surround the periphery of the parts to be cooled on the heat exchange plate 1, so that the longitudinal heat exchange space is increased.

[0035] In an embodiment of the utility model, the refrigerant pipeline comprises two pipelines, each refrigerant pipeline is provided with an independent refrigerant inlet 201 and a refrigerant outlet 202, and the fluid flow directions in the two refrigerant pipelines are opposite or opposite, in the embodiment, the opposite flow directions in the two serpentine pipes are preferred, the refrigerant pipeline adopts double-loop serpentine pipes, the refrigerant such as cooling water in the two serpentine pipes is input and output simultaneously in two directions, and the cooling efficiency is improved.

[0036] In use, the products to be welded are heated and warmed up in the same working cavity in stages until the expected temperature, then the heating is stopped, the refrigerant is input into the refrigerant pipeline, and the ambient temperature in the working cavity is gradiently cooled. After cooling is completed, the working cavity is opened, and the finished product is taken out.

[0037] The utility model has the advantages that two-way different flow directions of refrigerant can be adopted to uniformly radiate the products. If it is one-way fluid, the temperature at the inlet is low, the temperature at the outlet is high, and there is a temperature difference on the whole plate surface. However, if it is two-way or multi-way fluid, the temperature difference can be well and uniformly distributed, so that the cooling effect is optimized. Moreover, the refrigerant pipeline extends upward and downward in addition to being located in the heat exchange plate 1, so that the air near the heat exchange plate 1 is cooled faster.

[0038] The above description is an explanation of the present application, not a limitation of the present application, and the scope of the present application is defined in the claims. Any modification can be made within the scope of the present application.

Claims

1. A water cooling structure in a closed working chamber of a reflow soldering machine, characterized by: Built into the working cavity, the water cooling structure and the heat source are located in the same working cavity, the water cooling structure includes a plurality of refrigerant pipelines (2), and the refrigerant in the refrigerant pipelines (2) flows in different directions.

2. The water cooling structure in the closed working chamber of reflow soldering according to claim 1, characterized in that: A heat exchange plate (1) is provided in the working cavity, and a plurality of refrigerant pipes (2) are passed through the heat exchange plate (1).

3. The water cooling structure in the closed reflow soldering chamber according to claim 2, characterized in that: All refrigerant pipes (2) are arranged in a serpentine shape, forming a heat exchange surface inside the heat exchange plate (1) that is parallel to the plate surface of the heat exchange plate (1).

4. The water cooling structure in the closed reflow soldering chamber according to claim 2, wherein: The bending and turning section (203) of the refrigerant pipe extending out of the heat exchange plate (1) is inclined upward and downward of the heat exchange plate (1).

5. The water cooling structure in a closed reflow soldering chamber according to claim 1, wherein: Each refrigerant pipeline (2) is equipped with an independent refrigerant inlet (201) and a refrigerant outlet (202).

6. The water cooling structure in the closed reflow soldering chamber according to claim 4, characterized in that: At least one of the refrigerant pipes (2) extends outside the heat exchange plate (1) to form a circumferential cooling section (204) around the contour of the heat exchange plate (1).

7. The water cooling structure in the closed reflow soldering chamber according to claim 6, characterized in that: The circumferential cooling section (204) is close to the product-supporting surface of the heat exchange plate (1), and the bending and turning section (203) is close to the other surface of the heat exchange plate (1).

8. The water cooling structure in the closed reflow soldering chamber according to claim 7, characterized in that: The heat source is located below the heat exchange plate (1), and the bending and turning section (203) points towards the heat source.

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