A sealing structure for an evaporator

Abstract

This utility model discloses a sealing structure for an evaporator, including an upper water collecting pipe, a lower water collecting pipe, and a flat pipe. Extension plates are provided on both sides of the upper and lower water collecting pipes. Multiple sets of upper water collecting pipe interfaces are provided at the bottom of the upper water collecting pipe, and multiple sets of lower water collecting pipe interfaces are provided at the bottom of the lower water collecting pipe. An upper fixed wall extends downwards from the periphery of each upper water collecting pipe interface, and a short upper fixed wall is provided inside the upper fixed wall, forming an upper groove between the upper fixed wall and the short upper fixed wall. A lower fixed wall extends upwards from the periphery of each lower water collecting pipe interface, and a short lower fixed wall is provided inside the lower fixed wall, forming a lower groove between the lower fixed wall and the short lower fixed wall. The flat pipe has openings at both ends. The upper opening of the flat pipe is inserted into the upper groove, and the lower opening of the flat pipe has an inwardly recessed flat pipe groove that fits into the short lower fixed wall. This utility model has a stable structure, making it less prone to cracking at the connection between the flat pipe and the water collecting pipe, while significantly improving sealing and reducing leakage.

Description

Technical Field

[0001] This utility model relates to the field of automotive evaporators, and in particular to a sealing structure for an evaporator. Background Technology

[0002] Traditional evaporator sealing structures suffer from several problems that affect equipment performance and lifespan. Regarding sealing performance, the lack of an effective sealing compensation mechanism means that gaps can easily form at the connection between the flat tube and the water collector when refrigerant temperature changes cause thermal expansion and contraction, leading to refrigerant leakage. This not only reduces the evaporator's cooling efficiency and increases refrigerant usage costs but may also pollute the environment. In terms of structural stability, the simple connection between the flat tube and the water collector results in poor fixation. During operation, the flat tube is susceptible to external forces such as refrigerant flow impact and equipment vibration, causing displacement or even loosening and detachment. This affects the overall stability of the evaporator structure, shortens equipment lifespan, and increases maintenance frequency and costs. Utility Model Content

[0003] The purpose of this invention is to provide a sealing structure for an evaporator that offers high sealing performance and structural stability.

[0004] The purpose of this utility model is achieved as follows: a sealing structure for an evaporator, comprising an upper water collecting pipe and a lower water collecting pipe, and further comprising a flat pipe placed between the upper water collecting pipe and the lower water collecting pipe, characterized in that,

[0005] Both sides of the upper and lower water collection pipes are provided with extension plates, and the extension plates located on the same side of the upper and lower water collection pipes are connected by connecting rods; the bottom of the upper water collection pipe is provided with multiple sets of upper water collection pipe interfaces, and the bottom of the lower water collection pipe is provided with multiple sets of lower water collection pipe interfaces; an upper fixed wall extends downward from the periphery of the upper water collection pipe interface, and a short upper fixed wall is provided on the inner side of the upper fixed wall, and the upper fixed wall and the short upper fixed wall together form an upper groove; a lower fixed wall extends upward from the periphery of the lower water collection pipe interface, and a short lower fixed wall is provided on the inner side of the lower fixed wall, and the lower fixed wall and the short lower fixed wall together form a lower groove.

[0006] The flat tube has openings at both the top and bottom. The upper opening of the flat tube is inserted into the upper groove, and the lower opening of the flat tube has an inwardly recessed flat tube groove. The flat tube groove is inserted into and cooperates with the short lower fixed wall.

[0007] Preferably, the upper opening end of the flat tube and the top of the short lower fixed wall are both provided with a rubber layer.

[0008] Preferably, the height of the upper fixed wall is greater than that of the short upper fixed wall, and the height of the lower fixed wall is greater than that of the short lower fixed wall. The upper fixed wall and the lower fixed wall are welded and fixed to the flat tube.

[0009] Preferably, one end of the connecting rod is provided with a baffle and the other end is provided with a threaded post. The connecting rod is inserted into a through hole on the extension plate on the same side of the upper and lower water collection pipes. The threaded post is fixed to the upper water collection pipe by a limiting nut.

[0010] Preferably, a rubber sleeve is provided between the threaded post and the through hole on the extension plate.

[0011] Compared with the prior art, the advantages of this utility model are:

[0012] 1. A rubber layer is installed at the upper open end of the flat tube and the top of the short lower fixed wall to effectively cope with the thermal expansion and contraction of the flat tube and water collection pipe caused by the temperature change of the refrigerant during the operation of the evaporator.

[0013] 2. The upper and lower fixed walls are welded to the flat tube, with the upper fixed wall being taller than the shorter upper fixed wall and the lower fixed wall being taller than the shorter lower fixed wall. This design allows the outer upper and lower fixed walls to form a wrapping fixation on the flat tube. After welding, the stability of the flat tube is greatly improved, effectively resisting various external forces during operation, preventing the flat tube from loosening or falling off, greatly enhancing the stability and reliability of the overall evaporator structure, extending the service life of the equipment, and reducing maintenance costs.

[0014] 3. A baffle is provided at one end of the connecting rod and a threaded post at the other end. The threaded post cooperates with the limit nut to tightly connect the extension plates on the same side of the upper and lower water collection pipes. A rubber sleeve is provided to fill the gap between the threaded post and the through hole of the extension plate. This provides reliable fixing force for the connecting rod, preventing it from loosening and displacement. The rubber sleeve also reduces shaking, further improving the overall stability and ensuring that the evaporator can maintain good operating condition under complex working conditions. At the same time, when welding flat tubes, the connecting rod can be used to position the whole before welding, avoiding shaking of the flat tubes during the welding process and improving the welding effect. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is an enlarged view of the structure at point A of this utility model.

[0017] Figure 3 This is an enlarged view of the structure at point B of this utility model.

[0018] Figure 4 This is an enlarged view of the structure of the threaded post of this utility model.

[0019] Figure 5 This is an enlarged view of the structure of the screw baffle of this utility model.

[0020] Among them, 1 is the upper water collection pipe, 2 is the lower water collection pipe, 3 is the flat pipe, 301 is the flat pipe groove, 4 is the extension plate, 5 is the connecting rod, 501 is the baffle, 502 is the threaded column, 6 is the upper water collection pipe interface, 7 is the lower water collection pipe interface, 8 is the upper fixed wall, 9 is the short upper fixed wall, 10 is the upper groove, 11 is the lower fixed wall, 12 is the short lower fixed wall, 13 is the lower groove, 14 is the limit nut, and 15 is the rubber layer. Detailed Implementation

[0021] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0022] It should be noted that in the description of this utility model, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. These terms are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. The terms "horizontal," "vertical," and "suspended," etc., do not indicate that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0023] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] like Figure 1-5 As shown, a sealing structure for an evaporator includes an upper water collecting pipe 1 and a lower water collecting pipe 2, and also includes a flat pipe 3 placed between the upper water collecting pipe 1 and the lower water collecting pipe 2.

[0025] Both sides of the upper water collection pipe 1 and the lower water collection pipe 2 are provided with extension plates 4. The extension plates 4 located on the same side of the upper water collection pipe 1 and the lower water collection pipe 2 are connected by connecting rods 5. The bottom of the upper water collection pipe 1 is provided with multiple sets of upper water collection pipe interfaces 6, and the bottom of the lower water collection pipe 2 is provided with multiple sets of lower water collection pipe interfaces 7. The upper water collection pipe interface 6 has an upper fixed wall 8 extending downward around it, and a short upper fixed wall 9 is provided inside the upper fixed wall. The upper fixed wall 8 and the short upper fixed wall 9 together form an upper groove 10. The lower water collection pipe interface 7 has a lower fixed wall 11 extending upward around it, and a short lower fixed wall 12 is provided inside the lower fixed wall 11.

[0026] The flat tube 3 has openings at both the top and bottom. The upper opening of the flat tube 3 is inserted into the upper groove 10, and the lower opening of the flat tube 3 has an inwardly recessed flat tube groove 301. The flat tube groove 301 is inserted and fitted with the short lower fixed wall 12. Both ends of the flat tube are limited by the grooves, the displacement of the flat tube is small, the connection is less prone to cracks, and the structure is more stable.

[0027] like Figure 2-3 As shown, a rubber layer is provided at the upper open end of the flat tube 3 and the top of the short lower fixed wall 12. During the operation of the evaporator, the temperature of the refrigerant will change, causing thermal expansion and contraction of the flat tube and the water collection pipe. The rubber layer can deform accordingly when the temperature changes, always maintaining close contact with the flat tube and the water collection pipe, ensuring that the sealing performance is not affected by temperature changes, and effectively preventing leakage problems caused by thermal expansion and contraction.

[0028] like Figure 2-3 As shown, the height of the upper fixed wall 8 is greater than that of the short upper fixed wall 9, and the height of the lower fixed wall 11 is greater than that of the short lower fixed wall 12. The upper fixed wall 8 and the lower fixed wall 11 are welded and fixed to the flat tube. The flat tube can be wrapped by the outer upper fixed wall and the lower fixed wall, making it more stable after welding and effectively resisting the action of various external forces, preventing the flat tube from loosening or falling off during operation, and ensuring the stability and reliability of the overall structure of the evaporator.

[0029] like Figure 4-5 As shown, one end of the connecting rod 5 is provided with a baffle 501, and the other end is provided with a threaded post 502. The connecting rod 5 is inserted into the through hole on the extension plate on the same side of the upper and lower water collection pipes. The threaded post 502 is fixed to the upper water collection pipe by the limiting nut 14. The upper and lower water collection pipes are fixed by the connecting rod, which can increase the overall stability. The combined action of the baffle and the limiting nut can provide a reliable fixing force for the connecting rod, preventing the connecting rod from loosening or displacing during use.

[0030] like Figure 1 As shown, a rubber sleeve (not shown in the figure) is provided between the threaded post 502 and the through hole on the extension plate. The rubber sleeve can fill the gap between the threaded post and the extension plate, reduce shaking, and improve stability.

[0031] The working principle of this utility model is explained as follows: The upper and lower openings of the flat tube are inserted into the upper and lower grooves respectively to achieve precise positioning. The upper and lower fixed walls are welded and fixed to the flat tube to ensure stable installation. The rubber layer at the upper opening end of the flat tube and the top of the short lower fixed wall can deform due to the thermal expansion and contraction of the flat tube and the water collection pipe caused by changes in refrigerant temperature, always maintaining tight contact and preventing leakage. At the same time, the connecting rod, through the cooperation of the baffle, threaded post and limiting nut, and the rubber sleeve filling the gap, reliably fixes the upper and lower water collection pipes, ensuring that the entire sealing structure remains highly stable during operation and ensuring continuous and efficient cooling of the evaporator.

[0032] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the concept and scope of the present invention. Various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the design concept of the present invention should fall within the protection scope of the present invention. The technical content for which protection is sought in the present invention has been fully described in the claims.

Claims

1. A seal structure of an evaporator, characterized by, The device includes an upper water collection pipe and a lower water collection pipe, and also includes a flat pipe placed between the upper and lower water collection pipes. Extension plates are provided on both sides of the upper and lower water collection pipes, and the extension plates on the same side of the upper and lower water collection pipes are connected by a connecting rod. The bottom of the upper water collection pipe has multiple sets of upper water collection pipe interfaces, and the bottom of the lower water collection pipe has multiple sets of lower water collection pipe interfaces. An upper fixed wall extends downwards from the periphery of each upper water collection pipe interface, and a short upper fixed wall is provided inside the upper fixed wall. The upper fixed wall and the short upper fixed wall together form an upper groove. Similarly, a lower fixed wall extends upwards from the periphery of each lower water collection pipe interface, and a short lower fixed wall is provided inside the lower fixed wall. The lower fixed wall and the short lower fixed wall together form a lower groove. The flat tube has openings at both the top and bottom. The upper opening of the flat tube is inserted into the upper groove, and the lower opening of the flat tube has an inwardly recessed flat tube groove. The flat tube groove is inserted into and cooperates with the short lower fixed wall.

2. The sealing structure of an evaporator according to claim 1, characterized in that, The upper opening end of the flat tube and the top of the short lower fixed wall are both provided with a rubber layer.

3. The sealing structure of an evaporator according to claim 1, characterized in that, The height of the upper fixed wall is greater than that of the short upper fixed wall, and the height of the lower fixed wall is greater than that of the short lower fixed wall. The upper fixed wall and the lower fixed wall are welded and fixed to the flat tube.

4. The sealing structure of an evaporator according to claim 1, characterized in that, One end of the connecting rod is provided with a baffle, and the other end is provided with a threaded post. The connecting rod is inserted into the through hole on the extension plate on the same side of the upper and lower water collection pipes. The threaded post is fixed to the upper water collection pipe by a limiting nut.

5. The sealing structure of an evaporator according to claim 4, characterized in that, A rubber sleeve is provided between the threaded post and the through hole on the extension plate.

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