Automobile thick film heater

Abstract

The utility model relates to the technical field of heaters, in particular to an automobile thick film heater which comprises a heating middle shell, a flow channel containing cavity and a heating steel plate are arranged in the heating middle shell, the heating steel plate covers an opening of the flow channel containing cavity and seals the opening of the flow channel containing cavity, and a plurality of first heat dissipation boss sets are distributed on the inner bottom face of the flow channel containing cavity at intervals. The multiple first heat dissipation boss sets form multiple first flow channels for cooling liquid to flow, the multiple second heat dissipation boss sets are arranged on the side face, close to the flow channel containing cavity, of the heating steel plate at intervals, and the multiple second heat dissipation boss sets and the multiple first heat dissipation boss sets are arranged in a staggered mode, so that the area of fluid in the heating process can be increased, and the heat dissipation efficiency of the fluid is improved. And more heat is taken away, so that the heat exchange efficiency is improved, the reliability and the stability of thermal aging of the whole heating steel plate are realized, and the product quality of the whole thick film heater is improved.

Description

Technical Field

[0001] This utility model relates to the field of heater technology, and in particular to an automotive thick film heater. Background Technology

[0002] In the field of electric vehicles, the heat dissipation performance of the heater in the air conditioning compressor is crucial to the overall performance and safety of the vehicle. With the popularization of electric vehicles, the demand for efficient and stable heat dissipation technology is increasing. How to achieve efficient heat dissipation has become a research focus. This technology must not only meet the need to remove heat from the heated steel plate, but also ensure that the heat is generated evenly in order to improve heat exchange efficiency and extend the service life of the steel plate.

[0003] Currently, the surface of the heating steel plate in heaters is generally flat and without any heat dissipation structure, which results in insufficient heat exchange efficiency of the heater. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide an automotive thick film heater that can improve heat exchange efficiency.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A thick-film heater for automobiles includes a heating shell, inside which a flow channel cavity and a heating steel plate are provided. The heating steel plate covers and closes the opening of the flow channel cavity. Multiple first heat dissipation protrusions are arranged at intervals on the inner bottom surface of the flow channel cavity, forming multiple first flow channels for coolant flow. Multiple second heat dissipation protrusions are arranged at intervals on the side of the heating steel plate near the flow channel cavity, with the multiple second heat dissipation protrusions and the multiple first heat dissipation protrusions being staggered.

[0007] Furthermore, one end of the flow channel cavity is provided with an inlet and an outlet, and the inside of the flow channel cavity is provided with an inlet groove and an outlet groove. The inlet groove is located near the inlet and is connected to the inlet, and the outlet groove is located near the outlet and is connected to the outlet.

[0008] The interior of the flow channel cavity is divided into an inlet area, an outlet area, and a slow-water area. The slow-water area is located between the inlet area and the outlet area. The inlet groove is located in the inlet area, and the outlet groove is located in the outlet area. Multiple first heat dissipation protrusion groups are arranged in the slow-water area, and the multiple first heat dissipation protrusion groups are spaced apart along one end of the flow channel cavity towards the other end of the flow channel cavity.

[0009] Furthermore, the extension length of the water inlet groove along the direction from the water inlet towards the interior of the flow channel cavity is less than the side length of one end of the flow channel cavity in which it is located. The water inlet area is also provided with a plurality of spaced third heat dissipation protrusion groups. The plurality of third heat dissipation protrusion groups form a plurality of second flow channels. The second flow channels are used to introduce the coolant that enters the water inlet groove from the water inlet into the first flow channel from the water outlet end of the water inlet groove.

[0010] Furthermore, the extension length of the water inlet groove along the direction from the water inlet towards the interior of the flow channel cavity is greater than half the side length of one end of the flow channel cavity where it is located. Multiple third heat dissipation protrusion groups are arranged in the water inlet area at positions where no water inlet groove is provided, and multiple third heat dissipation protrusion groups are arranged at an angle relative to the first heat dissipation protrusion group.

[0011] Furthermore, the extension length of the water outlet groove along the direction from the water outlet into the flow channel cavity is less than the side length of one end of the flow channel cavity in which it is located. The water outlet area is also provided with a plurality of fourth heat dissipation protrusions arranged at intervals. The plurality of fourth heat dissipation protrusions form a plurality of third flow channels. The third flow channels are used to introduce the coolant in the first flow channel into the water outlet groove and discharge it from the water outlet.

[0012] Furthermore, the extension length of the water outlet groove along the direction from the water outlet into the interior of the flow channel cavity is less than half the side length of one end of the flow channel cavity in which it is located, and multiple fourth heat dissipation protrusion groups are arranged in the water outlet area at positions where no water outlet groove is provided.

[0013] In the water outlet area, where there is no water outlet groove, there are also multiple fifth heat dissipation protrusion groups arranged at intervals. The multiple fifth heat dissipation protrusion groups are staggered with the multiple first heat dissipation protrusion groups and the multiple fourth heat dissipation protrusion groups. The multiple fifth heat dissipation protrusion groups form multiple fourth flow channels. The fourth flow channels are located between the first flow channels and the third flow channels and are used to introduce the coolant in the first flow channel into the third flow channel.

[0014] Furthermore, the third flow channel is a straight flow channel, and the fourth flow channel is an arc-shaped flow channel.

[0015] Furthermore, the direction in which the plurality of fourth heat dissipation protrusion groups are arranged is perpendicular to the direction in which the plurality of first heat dissipation protrusion groups are arranged.

[0016] Furthermore, the first heat dissipation protrusion group includes a plurality of protrusions arranged at intervals, and the arrangement direction of the plurality of protrusions is perpendicular to the arrangement direction of the plurality of first heat dissipation protrusion groups.

[0017] Furthermore, the height of the protrusion protruding from the inner bottom surface of the flow channel cavity is less than the distance between the inner bottom surface of the flow channel cavity and the heating steel plate.

[0018] The beneficial effects of this utility model are as follows:

[0019] This solution involves arranging multiple second heat dissipation protrusions at intervals on one side of the heating steel plate near the flow channel cavity. These second heat dissipation protrusions are staggered with the first heat dissipation protrusions on the inner bottom surface of the flow channel cavity. This allows the coolant to flow in a staggered manner, resulting in more thorough turbulent heat transfer. This increases the surface area of ​​the fluid during the heating process and removes more heat, thereby improving heat exchange efficiency. Furthermore, by setting heat dissipation protrusions on both the heating steel plate and the flow channel cavity, the reliability and stability of the overall heating steel plate's thermal aging are also improved, thus enhancing the overall quality of the thick film heater. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the heating shell of the automotive thick film heater of this utility model;

[0021] Figure 2 This is a schematic diagram of the heating steel plate of the automotive thick film heater of this utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the heating shell and heating steel plate of the automotive thick film heater of this utility model after they are assembled together.

[0023] Label Explanation:

[0024] 1. Heated middle shell; 2. Flow channel cavity; 21. Water inlet area; 211. Water inlet groove; 212. Third heat dissipation boss group; 213. Second flow channel; 22. Water outlet area; 221. Fourth heat dissipation boss group; 222. Third flow channel; 223. Fifth heat dissipation boss group; 224. Fourth flow channel; 225. Water outlet groove; 23. Slow water area; 231. First heat dissipation boss group; 232. First flow channel; 24. Water inlet; 25. Water outlet; 3. Heated steel plate; 31. Second heat dissipation boss group. Detailed Implementation

[0025] To explain in detail the technical content, objectives, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0026] Please refer to Figure 1 as well as Figure 2 A thick-film heater for automobiles includes a heating shell, inside which a flow channel cavity and a heating steel plate are provided. The heating steel plate covers and closes the opening of the flow channel cavity. Multiple first heat dissipation protrusions are arranged at intervals on the inner bottom surface of the flow channel cavity, forming multiple first flow channels for coolant flow. Multiple second heat dissipation protrusions are arranged at intervals on the side of the heating steel plate near the flow channel cavity, with the multiple second heat dissipation protrusions and the multiple first heat dissipation protrusions being staggered.

[0027] As can be seen from the above description, the beneficial effects of this utility model are as follows:

[0028] This solution involves arranging multiple second heat dissipation protrusions at intervals on one side of the heating steel plate near the flow channel cavity. These second heat dissipation protrusions are staggered with the first heat dissipation protrusions on the inner bottom surface of the flow channel cavity. This allows the coolant to flow in a staggered manner, resulting in more thorough turbulent heat transfer. This increases the surface area of ​​the fluid during the heating process and removes more heat, thereby improving heat exchange efficiency. Furthermore, by setting heat dissipation protrusions on both the heating steel plate and the flow channel cavity, the reliability and stability of the overall heating steel plate's thermal aging are also improved, thus enhancing the overall quality of the thick film heater.

[0029] Furthermore, one end of the flow channel cavity is provided with an inlet and an outlet, and the inside of the flow channel cavity is provided with an inlet groove and an outlet groove. The inlet groove is located near the inlet and is connected to the inlet, and the outlet groove is located near the outlet and is connected to the outlet.

[0030] The interior of the flow channel cavity is divided into an inlet area, an outlet area, and a slow-water area. The slow-water area is located between the inlet area and the outlet area. The inlet groove is located in the inlet area, and the outlet groove is located in the outlet area. Multiple first heat dissipation protrusion groups are arranged in the slow-water area, and the multiple first heat dissipation protrusion groups are spaced apart along one end of the flow channel cavity towards the other end of the flow channel cavity.

[0031] Furthermore, the extension length of the water inlet groove along the direction from the water inlet towards the interior of the flow channel cavity is less than the side length of one end of the flow channel cavity in which it is located. The water inlet area is also provided with a plurality of spaced third heat dissipation protrusion groups. The plurality of third heat dissipation protrusion groups form a plurality of second flow channels. The second flow channels are used to introduce the coolant that enters the water inlet groove from the water inlet into the first flow channel from the water outlet end of the water inlet groove.

[0032] As can be seen from the above description, by setting the above structure, the surface area of ​​the fluid during the heating process can be further increased, and more heat can be carried away, thereby further improving the heat exchange efficiency.

[0033] Furthermore, the extension length of the water inlet groove along the direction from the water inlet towards the interior of the flow channel cavity is greater than half the side length of one end of the flow channel cavity where it is located. Multiple third heat dissipation protrusion groups are arranged in the water inlet area at positions where no water inlet groove is provided, and multiple third heat dissipation protrusion groups are arranged at an angle relative to the first heat dissipation protrusion group.

[0034] As can be seen from the above description, the multiple third heat dissipation bosses are inclined relative to the first heat dissipation bosses, which allows the coolant in the water inlet groove to enter the first flow channel better, thereby further increasing the surface area of ​​the fluid during the heating process and carrying away more heat, thus further improving the heat exchange efficiency.

[0035] Furthermore, the extension length of the water outlet groove along the direction from the water outlet into the flow channel cavity is less than the side length of one end of the flow channel cavity in which it is located. The water outlet area is also provided with a plurality of fourth heat dissipation protrusions arranged at intervals. The plurality of fourth heat dissipation protrusions form a plurality of third flow channels. The third flow channels are used to introduce the coolant in the first flow channel into the water outlet groove and discharge it from the water outlet.

[0036] As can be seen from the above description, by setting multiple fourth heat dissipation protrusions arranged at intervals on the water outlet area, the multiple fourth heat dissipation protrusions form multiple third flow channels, which can better introduce the coolant in the first flow channel into the water outlet groove and discharge it from the water outlet, thereby further increasing the surface area of ​​the fluid in the heating process and taking away more heat, thus further improving the heat exchange efficiency.

[0037] Furthermore, the extension length of the water outlet groove along the direction from the water outlet into the interior of the flow channel cavity is less than half the side length of one end of the flow channel cavity in which it is located, and multiple fourth heat dissipation protrusion groups are arranged in the water outlet area at positions where no water outlet groove is provided.

[0038] In the water outlet area, where there is no water outlet groove, there are also multiple fifth heat dissipation protrusion groups arranged at intervals. The multiple fifth heat dissipation protrusion groups are staggered with the multiple first heat dissipation protrusion groups and the multiple fourth heat dissipation protrusion groups. The multiple fifth heat dissipation protrusion groups form multiple fourth flow channels. The fourth flow channels are located between the first flow channels and the third flow channels and are used to introduce the coolant in the first flow channel into the third flow channel.

[0039] As can be seen from the above description, by setting up a fifth heat dissipation protrusion group, and by staggering the fifth heat dissipation protrusion group with the first heat dissipation protrusion group and the fourth heat dissipation protrusion group respectively, the surface area of ​​the fluid during the heating process can be further increased, and more heat can be carried away, thereby further improving the heat exchange efficiency.

[0040] Furthermore, the third flow channel is a straight flow channel, and the fourth flow channel is an arc-shaped flow channel.

[0041] Furthermore, the direction in which the plurality of fourth heat dissipation protrusion groups are arranged is perpendicular to the direction in which the plurality of first heat dissipation protrusion groups are arranged.

[0042] Furthermore, the first heat dissipation protrusion group includes a plurality of protrusions arranged at intervals, and the arrangement direction of the plurality of protrusions is perpendicular to the arrangement direction of the plurality of first heat dissipation protrusion groups.

[0043] Furthermore, the height of the protrusion protruding from the inner bottom surface of the flow channel cavity is less than the distance between the inner bottom surface of the flow channel cavity and the heating steel plate.

[0044] Please refer to Figures 1 to 3 As shown, Embodiment 1 of this utility model is as follows:

[0045] Please refer to Figure 1 and Figure 2 A thick-film heater for automobiles includes a heating shell 1. The heating shell 1 has a flow channel cavity 2 and a heating steel plate 3 inside. The heating steel plate 3 covers the opening of the flow channel cavity 2 and closes the opening of the flow channel cavity 2. A plurality of first heat dissipation protrusion groups 231 are arranged at intervals on the inner bottom surface of the flow channel cavity 2. The plurality of first heat dissipation protrusion groups 231 form a plurality of first flow channels 232 for coolant flow. A plurality of second heat dissipation protrusion groups 31 are arranged at intervals on the side surface of the heating steel plate 3 near the flow channel cavity 2. The plurality of second heat dissipation protrusion groups 31 and the plurality of first heat dissipation protrusion groups 231 are staggered.

[0046] Please refer to Figure 1 The flow channel cavity 2 is provided with an inlet 24 and an outlet 25 at one end. The flow channel cavity 2 is provided with an inlet groove 211 and an outlet groove 225 inside. The inlet groove 211 is located near the inlet 24 and is connected to the inlet 24. The outlet groove 225 is located near the outlet 25 and is connected to the outlet 25.

[0047] Please refer to Figure 1 The interior of the flow channel cavity 2 is divided into an inlet area 21, an outlet area 22 and a slow water area 23. The slow water area 23 is located between the inlet area 21 and the outlet area 22. The inlet groove 211 is located in the inlet area 21 and the outlet groove 225 is located in the outlet area 22. A plurality of first heat dissipation protrusion groups 231 are arranged in the slow water area 23. The plurality of first heat dissipation protrusion groups 231 are spaced apart along one end of the flow channel cavity 2 toward the other end of the flow channel cavity 2.

[0048] Please refer to Figure 1 The extension length of the water inlet groove 211 along the water inlet 24 toward the interior of the flow channel cavity 2 is less than the side length of one end of the flow channel cavity 2 where it is located. The water inlet area 21 is also provided with a plurality of spaced third heat dissipation protrusion groups 212. The plurality of third heat dissipation protrusion groups 212 form a plurality of second flow channels 213. The second flow channels 213 are used to introduce the coolant entering the water inlet groove 211 from the water inlet 24 into the first flow channel 232 from the water outlet end of the water inlet groove 211.

[0049] Please refer to Figure 1The extension length of the water inlet groove 211 along the water inlet 24 toward the interior of the flow channel cavity 2 is greater than half the side length of one end of the flow channel cavity 2 where it is located. Multiple third heat dissipation boss groups 212 are arranged in the water inlet area 21 at the position where the water inlet groove 211 is not provided, and multiple third heat dissipation boss groups 212 are inclined relative to the first heat dissipation boss group 231.

[0050] Please refer to Figure 1 The extension length of the water outlet groove 225 along the water outlet 25 toward the interior of the flow channel cavity 2 is less than the side length of one end of the flow channel cavity 2 where it is located. The water outlet area 22 is also provided with a plurality of fourth heat dissipation protrusion groups 221 arranged at intervals. The plurality of fourth heat dissipation protrusion groups 221 form a plurality of third flow channels 222. The third flow channels 222 are used to introduce the coolant in the first flow channel 232 into the water outlet groove 225 and discharge it from the water outlet 25.

[0051] Please refer to Figure 1 The extension length of the water outlet groove 225 along the water outlet 25 toward the interior of the flow channel cavity 2 is less than half the side length of one end of the flow channel cavity 2 where it is located, and the plurality of fourth heat dissipation bosses 221 are arranged in the water outlet area 22 at the position where the water outlet groove 225 is not provided.

[0052] Please refer to Figure 1 In the water outlet area 22, where there is no water outlet groove 225, there are also a plurality of fifth heat dissipation protrusion groups 223 arranged at intervals. The plurality of fifth heat dissipation protrusion groups 223 are staggered with the plurality of first heat dissipation protrusion groups 231 and the plurality of fourth heat dissipation protrusion groups 221 respectively. The plurality of fifth heat dissipation protrusion groups 223 form a plurality of fourth flow channels 224. The fourth flow channels 224 are located between the first flow channel 232 and the third flow channel 222 and are used to introduce the coolant in the first flow channel 232 into the third flow channel 222.

[0053] Please refer to Figure 1 The third flow channel 222 is a straight flow channel, and the fourth flow channel 224 is an arc flow channel.

[0054] Please refer to Figure 1 The direction in which the plurality of fourth heat dissipation protrusion groups 221 are arranged is perpendicular to the direction in which the plurality of first heat dissipation protrusion groups 231 are arranged.

[0055] Please refer to Figure 1 The first heat dissipation protrusion group 231 includes a plurality of protrusions arranged at intervals, and the arrangement direction of the plurality of protrusions is perpendicular to the arrangement direction of the plurality of first heat dissipation protrusion groups 231.

[0056] The height of the inner bottom surface of the protruding flow channel cavity 2 is less than the distance between the inner bottom surface of the flow channel cavity 2 and the heating steel plate 3.

[0057] The second heat dissipation protrusion group 31, the third heat dissipation protrusion group 212, the fourth heat dissipation protrusion group 221 and the fifth heat dissipation protrusion group 223 each include a plurality of protrusions arranged at intervals, and the horizontal cross-sectional shape of the protrusions in the first heat dissipation protrusion group 231, the second heat dissipation protrusion group 31, the third heat dissipation protrusion group 212 and the fourth heat dissipation protrusion group 221 is elliptical, and the horizontal cross-sectional shape of the protrusions in the fourth heat dissipation protrusion group 221 is strip-shaped.

[0058] Please refer to Figure 1 and Figure 2 On the side of the heated steel plate 3 near the flow channel cavity 2, there is also a heat dissipation boss group with the same arrangement as the third heat dissipation boss group 212, the fourth heat dissipation boss group 221 and the fifth heat dissipation boss group 223. The heat dissipation boss groups on both are staggered and together form a flow channel cavity similar to an interlocking type.

[0059] In summary, the automotive thick-film heater provided by this utility model features multiple second heat dissipation protrusions arranged at intervals on the side of the heating steel plate near the flow channel cavity. These second heat dissipation protrusions are staggered with the first heat dissipation protrusions on the inner bottom surface of the flow channel cavity. This allows the coolant to flow in a staggered manner, resulting in more thorough turbulent heat exchange. This increases the surface area of ​​the fluid during heating and removes more heat, thereby improving heat exchange efficiency. Furthermore, the presence of heat dissipation protrusions on both the heating steel plate and the flow channel cavity enhances the reliability and stability of the overall heating steel plate's thermal aging performance, thus improving the overall quality of the thick-film heater.

[0060] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An automotive thick film heater, characterized by, The device includes a heating shell, inside which there is a flow channel cavity and a heating steel plate. The heating steel plate covers and seals the opening of the flow channel cavity. Multiple first heat dissipation protrusions are arranged at intervals on the inner bottom surface of the flow channel cavity, forming multiple first flow channels for coolant flow. Multiple second heat dissipation protrusions are arranged at intervals on the side of the heating steel plate near the flow channel cavity, and the multiple second heat dissipation protrusions are staggered with the multiple first heat dissipation protrusions.

2. The automotive thick film heater of claim 1, wherein, One end of the flow channel cavity is provided with an inlet and an outlet respectively. The inside of the flow channel cavity is provided with an inlet groove and an outlet groove. The inlet groove is located near the inlet and is connected to the inlet. The outlet groove is located near the outlet and is connected to the outlet. The interior of the flow channel cavity is divided into an inlet area, an outlet area, and a slow-water area. The slow-water area is located between the inlet area and the outlet area. The inlet groove is located in the inlet area, and the outlet groove is located in the outlet area. Multiple first heat dissipation protrusion groups are arranged in the slow-water area, and the multiple first heat dissipation protrusion groups are spaced apart along one end of the flow channel cavity towards the other end of the flow channel cavity.

3. The automotive thick film heater of claim 2, wherein, The extension length of the water inlet groove along the direction from the water inlet towards the interior of the flow channel cavity is less than the side length of one end of the flow channel cavity in which it is located. The water inlet area is also provided with a plurality of third heat dissipation protrusions arranged at intervals. The plurality of third heat dissipation protrusions form a plurality of second flow channels. The second flow channels are used to introduce the coolant that enters the water inlet groove from the water inlet into the first flow channel from the water outlet end of the water inlet groove.

4. The automotive thick film heater of claim 3, wherein, The extension length of the water inlet groove along the direction from the water inlet towards the interior of the flow channel cavity is greater than half the side length of one end of the flow channel cavity where it is located. Multiple third heat dissipation protrusion groups are set in the water inlet area at the position where no water inlet groove is set, and multiple third heat dissipation protrusion groups are set at an inclination relative to the first heat dissipation protrusion group.

5. The automotive thick film heater of claim 2 wherein, The extension length of the water outlet groove along the direction from the water outlet into the flow channel cavity is less than the side length of one end of the flow channel cavity in which it is located. The water outlet area is also provided with a plurality of fourth heat dissipation protrusions arranged at intervals. The plurality of fourth heat dissipation protrusions form a plurality of third flow channels. The third flow channels are used to introduce the coolant in the first flow channel into the water outlet groove and discharge it from the water outlet.

6. The automotive thick film heater of claim 5 wherein, The extension length of the water outlet groove along the direction from the water outlet into the interior of the flow channel cavity is less than half the side length of one end of the flow channel cavity in which it is located, and multiple fourth heat dissipation boss groups are set in the water outlet area at the position where no water outlet groove is set. In the water outlet area, where there is no water outlet groove, there are also multiple fifth heat dissipation protrusion groups arranged at intervals. The multiple fifth heat dissipation protrusion groups are staggered with the multiple first heat dissipation protrusion groups and the multiple fourth heat dissipation protrusion groups. The multiple fifth heat dissipation protrusion groups form multiple fourth flow channels. The fourth flow channels are located between the first flow channels and the third flow channels and are used to introduce the coolant in the first flow channel into the third flow channel.

7. The automotive thick film heater according to claim 6, characterized in that, The third flow channel is a straight flow channel, and the fourth flow channel is an arc flow channel.

8. The automotive thick film heater of claim 5 wherein, The direction in which the plurality of fourth heat dissipation protrusion groups are arranged is perpendicular to the direction in which the plurality of first heat dissipation protrusion groups are arranged.

9. The automotive thick film heater of claim 1 wherein, The first heat dissipation boss group comprises a plurality of protrusions arranged at intervals, and the arrangement direction of the plurality of protrusions is perpendicular to the arrangement direction of the first heat dissipation boss group.

10. The automotive thick film heater of claim 9, wherein, The height of the protrusion protruding from the inner bottom surface of the flow channel cavity is less than the distance between the inner bottom surface of the flow channel cavity and the heating steel plate.

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