Automotive heat exchanger and method of manufacture

Abstract

The invention discloses an automobile heat exchanger and a manufacturing method of the automobile heat exchanger. The automobile heat exchanger comprises a shell and a heating plate. The shell is provided with an inner cavity with an upward opening, and a water inlet pipe and a water outlet pipe communicated with the inner cavity of the shell are arranged on the side wall of the shell. The heating plate is located above the shell and blocks the opening, the shell and the heating plate are fixed through welding and form a welding strip, and the welding strip is annular and located at the joint of the outer circumferential wall of the heating plate and the inner circumferential wall of the shell. The shell and the heating plate can be relatively fixed through welding, and the connection strength is high; moreover, the welding strip formed by welding can also serve as a sealing strip to seal the gap between the heating plate and the shell, so that the liquid leakage phenomenon is avoided, and compared with a plastic sealing strip, the service life is longer, and the sealing performance is higher.

Description

Technical Field

[0001] The present invention relates to the technical field of heat exchangers, and in particular to an automobile heat exchanger and a manufacturing method thereof. Background Art

[0002] The heat exchanger of a car is a multi-purpose electric heater that heats the circulating antifreeze to increase the air temperature in the car, maintain the battery temperature, or provide other required heat sources. In the cold winter, it is the most important electric heating source for the car's air conditioning and heating system and the battery heating and insulation system. It is also an important component for the car to meet defrosting regulations and ensure the safety of battery charging and discharging. At present, the heating cover of the heat exchanger is fixedly connected to the shell by bolts, and a heating area is formed between the heating cover and the shell. In order to improve the sealing, a sealing strip is usually provided between the cover and the shell for sealing, but leakage and seepage problems still occur. Summary of the invention

[0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent. To this end, the present invention provides an automobile heat exchanger and a method for manufacturing the automobile heat exchanger.

[0004] In a first aspect, an embodiment of the present invention provides an automotive heat exchanger, the automotive heat exchanger comprising:

[0005] A shell body, wherein the shell body has an inner cavity and an opening facing upward, and a side wall of the shell body is provided with a water inlet pipe and a water outlet pipe connected to the inner cavity of the shell body;

[0006] A heating plate is located above the shell and blocks the opening. The shell and the heating plate are fixed by welding to form a welding strip. The welding strip is annular and located at the connection between the outer peripheral wall of the heating plate and the inner peripheral wall of the shell.

[0007] The automotive heat exchanger according to the embodiment of the present invention has at least the following technical effects: the shell and the heating plate can be relatively fixed by welding, and the connection strength is high; moreover, the welding strip formed by welding can also be used as a sealing strip to seal the gap between the heating plate and the shell, thereby avoiding liquid leakage, and the service life is longer and the sealing performance is stronger than that of plastic sealing strips.

[0008] According to some embodiments of the present invention, a diverter plate is provided in the inner cavity of the shell, and a plurality of the diverter plates are arranged at intervals.

[0009] According to some embodiments of the present invention, the diverter plate is disposed on the lower end surface of the heating plate, and the heating plate and the diverter plate are integrally formed.

[0010] According to some embodiments of the present invention, a heating coating and an electrode group are provided on the upper end surface of the heating plate. The electrode group is electrically connected to the heating coating. When the electrode group is energized, the heating coating can generate heat and transfer heat to the heating plate.

[0011] According to some embodiments of the present invention, the inner cavity of the shell is provided with a U-shaped flow channel, one end of the U-shaped flow channel is connected to the water inlet pipe, and the other end of the U-shaped flow channel is connected to the water outlet pipe.

[0012] According to some embodiments of the present invention, the housing is made by integral forging.

[0013] According to some embodiments of the present invention, the heating plate is an aluminum alloy plate.

[0014] According to some embodiments of the present invention, an annular groove is provided on the upper end surface of the shell, the heating plate is mounted on the annular groove, and the bottom of the annular groove is attached to the lower end surface of the heating plate.

[0015] According to some embodiments of the present invention, there is a gap between the inner wall of the annular groove and the outer peripheral wall of the heating plate, and the welding strip blocks the gap and fixes the shell and the heating plate relatively.

[0016] In a second aspect, an embodiment of the present invention further provides a method for manufacturing an automotive heat exchanger, which is used to manufacture the automotive heat exchanger according to the embodiment of the first aspect of the present invention. The method for manufacturing the automotive heat exchanger comprises the following steps:

[0017] The heating plate is placed at the opening of the shell, the heating plate and the shell are fixed relative to each other by welding, and the gap between the heating plate and the shell is sealed by welding rods;

[0018] The heating coating is covered on the upper end surface of the heating plate by using screen printing technology.

[0019] The manufacturing method of the automobile heat exchanger according to the embodiment of the present invention has at least the following technical effects: the manufacturing method of the automobile heat exchanger is used to manufacture the automobile heat exchanger; the heating plate and the shell can be welded and fixed first, and then the heating coating is printed and covered on the heating plate; or the heating coating is printed and covered on the heating plate first, and then the heating plate and the shell are welded and fixed; the former can ensure the parallelism of the heating coating and the shell, and the latter can improve the production efficiency.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0022] Figure 1 is a schematic structural diagram of an automobile heat exchanger according to some embodiments of the present invention;

[0023] Figure 2 is an exploded view of an automotive heat exchanger according to some embodiments of the present invention;

[0024] Figure 3 is a cross-sectional view of an automotive heat exchanger according to some embodiments of the present invention;

[0025] Figure 4 is an exploded view of an automobile heat exchanger according to some embodiments of the present invention from another angle;

[0026] Figure 5 Schematic diagram of the structure of the heating plate of some embodiments of the present invention.

[0027] Figure Number:

[0028] Shell 100, opening 101, water inlet pipe 110, water outlet pipe 120, U-shaped flow channel 130, annular groove 140;

[0029] Heating plate 200 , welding rod 210 , shunt plate 220 , heating coating 230 , electrode group 240 . DETAILED DESCRIPTION

[0030] 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.

[0031] In the description of the present invention, it should be understood that descriptions involving orientation, such as 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 should not be understood as a limitation on the present invention.

[0032] In the description of the present invention, the meaning of "multiple" is more than two, "greater than", "less than", "exceed", etc. are understood as not including the number itself, and "above", "below", "within", etc. are understood as including the number itself. In the description of the present invention, unless otherwise clearly defined, the words "set", "install", "connect", etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0033] The embodiments of the present invention are further described below in conjunction with the accompanying drawings.

[0034] According to some embodiments of the present invention, referring to Figures 1 to 5 The automobile heat exchanger includes a shell 100 and a heating plate 200. The shell 100 has an inner cavity, and an opening 101 of the shell 100 faces upward. The side wall of the shell 100 is provided with a water inlet pipe 110 and a water outlet pipe 120, and the water inlet pipe 110 and the water outlet pipe 120 are both connected to the inner cavity of the shell 100. The heating plate 200 is located above the shell 100 and blocks the opening 101 of the shell 100. The shell 100 and the heating plate 200 are fixed by welding, and a welding strip 210 is formed during the welding process. There is a gap between the inner peripheral wall of the shell 100 and the outer peripheral wall of the heating plate 200. The welding strip 210 is annular and is located at the connection between the outer peripheral wall of the heating plate 200 and the inner peripheral wall of the shell 100. The heating plate 200 can heat and transfer heat to the inner cavity of the shell 100 so that the liquid in the inner cavity of the shell 100 is heated, and the welding strip 210 blocks the gap to prevent water leakage.

[0035] It is understandable that the shell 100 and the heating plate 200 can be relatively fixed by welding, and the connection strength is high. Moreover, the welding strip 210 formed by welding can also be used as a sealing strip to seal the gap between the heating plate 200 and the shell 100, thereby avoiding leakage, and has a longer life and stronger sealing performance than a plastic sealing strip.

[0036] According to some embodiments of the present invention, referring to Figures 3 to 5 , a diverter plate 220 is provided in the inner cavity of the shell 100, and a plurality of diverter plates 220 are arranged at intervals. The liquid enters the inner cavity of the shell 100 from the water inlet pipe 110, and the diverter plate 220 can disperse the liquid to ensure that the liquid in the inner cavity of the shell 100 can be evenly heated. Preferably, a diverter plate 220 is provided on the lower end surface of the heating plate 200, and the upper end of the diverter plate 220 is fixedly connected to the heating plate 200, and the heating plate 200 and the diverter plate 220 are integrally formed. It can be understood that the conventional diverter plate 220 is provided on the shell 100 and is not connected to the heating plate 200, while the heating plate 200 of this embodiment is integrally formed with the diverter plate 220, and the heat on the heating plate 200 can be quickly transferred to the diverter plate 220, and the diverter plate 220 is inserted into the inner cavity of the shell 100 and contacts with the liquid to realize heat exchange, thereby increasing the area of ​​heat exchange and improving the heating efficiency.

[0037] According to some embodiments of the present invention, referring to Figure 1 and Figure 2The upper end surface of the heating plate 200 is provided with a heating coating 230 and an electrode group 240. The electrode group 240 is electrically connected to the heating coating 230. The heating coating 230 is covered on the heating plate 200 by screen printing technology. When the electrode group 240 is energized, the heating coating 230 can generate heat and transfer heat to the heating plate 200. The heating plate 200 then transfers the heat to the inner cavity of the shell 100 to heat the liquid in the inner cavity of the shell 100.

[0038] According to some embodiments of the present invention, referring to Figure 2 The inner cavity of the housing 100 is provided with a U-shaped flow channel 130, one end of the U-shaped flow channel 130 is connected to the water inlet pipe 110, and the other end of the U-shaped flow channel 130 is connected to the water outlet pipe 120. The U-shaped flow channel 130 can increase the flow time of the liquid in the inner cavity of the housing 100 and the contact area with the housing 100 and the heating plate 200, thereby enhancing the heating effect.

[0039] Preferably, the housing 100 is made by integral forging, so that the housing 100 has no pores, thereby improving air tightness. The heating plate 200 is an aluminum alloy plate, which has good heat transfer effect and high hardness.

[0040] According to some embodiments of the present invention, referring to Figures 2 to 4 The upper end surface of the housing 100 is provided with an annular groove 140, the heating plate 200 is placed on the annular groove 140, and the bottom of the annular groove 140 is attached to the lower end surface of the heating plate 200. There is a gap between the inner wall of the annular groove 140 and the outer peripheral wall of the heating plate 200. During welding, the welding rod 210 can relatively fix the housing 100 and the heating plate 200, and block the gap, thereby preventing the liquid in the housing 100 from leaking through the gap.

[0041] According to some embodiments of the present invention, a method for manufacturing an automobile heat exchanger is used to manufacture an automobile heat exchanger, and the method for manufacturing an automobile heat exchanger comprises the following steps:

[0042] S100: placing the heating plate 200 at the opening 101 of the housing 100, fixing the heating plate 200 and the housing 100 relative to each other by welding, and sealing the gap between the heating plate 200 and the housing 100 by welding the welding rod 210;

[0043] S200: Using screen printing technology to cover the upper end surface of the heating plate 200 with the heating coating 230 .

[0044] The above does not represent the execution order of the steps, that is, S100 may be executed before S200, or S200 may be executed before S100.

[0045] It is understandable that in the process of manufacturing the automobile exchanger, the heating plate 200 and the housing 100 can be welded and fixed first, and then the heating coating 230 can be printed and covered on the heating plate 200, so as to ensure the parallelism between the heating coating 230 and the housing 100 and improve the product qualification rate. Alternatively, the heating coating 230 can be printed and covered on the heating plate 200 first, and then the heating plate 200 and the housing 100 are welded and fixed. Since a single heating plate 200 is easy to fix and wait for the printing coating, and there is no need to wait for the welding to cool down, the production efficiency of the product can be improved.

[0046] In the description of this specification, the description with reference to the term "some embodiments" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0047] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An automotive heat exchanger, characterized in that: include: A shell (100), the shell (100) having an inner cavity and an opening (101) facing upward, and a side wall of the shell (100) being provided with a water inlet pipe (110) and a water outlet pipe (120) connected to the inner cavity of the shell (100); A heating plate (200), the heating plate (200) being located above the shell (100) and blocking the opening (101), the shell (100) and the heating plate (200) being fixed by welding to form a welding strip (210), the welding strip (210) being ring-shaped and located at the connection between the outer peripheral wall of the heating plate (200) and the inner peripheral wall of the shell (100).

2. The automotive heat exchanger according to claim 1, characterized in that: The inner cavity of the shell (100) is provided with a flow dividing plate (220), and a plurality of the flow dividing plates (220) are arranged at intervals.

3. The automotive heat exchanger according to claim 2, characterized in that: The lower end surface of the heating plate (200) is provided with the diverter plate (220), and the heating plate (200) and the diverter plate (220) are integrally formed.

4. The automotive heat exchanger according to claim 1, characterized in that: The upper end surface of the heating plate (200) is provided with a heating coating (230) and an electrode group (240); the electrode group (240) is electrically connected to the heating coating (230); and when the electrode group (240) is energized, the heating coating (230) can generate heat and transfer heat to the heating plate (200).

5. The automotive heat exchanger according to claim 1, characterized in that: The inner cavity of the shell (100) is provided with a U-shaped flow channel (130), one end of the U-shaped flow channel (130) is connected to the water inlet pipe (110), and the other end of the U-shaped flow channel (130) is connected to the water outlet pipe (120).

6. The automotive heat exchanger according to claim 1, characterized in that: The housing (100) is manufactured by integral forging.

7. The automotive heat exchanger according to claim 1, characterized in that: The heating plate (200) is an aluminum alloy plate.

8. The automotive heat exchanger according to claim 1, characterized in that: The upper end surface of the shell (100) is provided with an annular groove (140), the heating plate (200) is mounted on the annular groove (140), and the bottom of the annular groove (140) is attached to the lower end surface of the heating plate (200).

9. The automotive heat exchanger according to claim 8, characterized in that: There is a gap between the inner wall of the annular groove (140) and the outer peripheral wall of the heating plate (200), and the welding strip (210) blocks the gap and relatively fixes the housing (100) and the heating plate (200).

10. A method for manufacturing an automotive heat exchanger, used for manufacturing the automotive heat exchanger according to any one of claims 1 to 9, characterized in that: The manufacturing method of the automobile heat exchanger comprises the following steps: The heating plate (200) is placed at the opening (101) of the shell (100), the heating plate (200) and the shell (100) are relatively fixed by welding, and the gap between the heating plate (200) and the shell (100) is sealed by a welding rod (210) formed by welding; The heating coating (230) is covered on the upper end surface of the heating plate (200) by using screen printing technology.

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