Runner mechanism of thick film heater
By designing the interlaced runner and guide block structure in the thick film heater, the coolant is disturbed to disperse the bubbles, and the bubble adhesion problem in traditional thick film heaters is solved, improving the heat exchange effect and the stability of the substrate.
Patent Information
- Application Number
- CN202420572488.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-22
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-03-22
AI Technical Summary
Traditional thick film heaters bring in air when coolant enters, causing bubbles to adhere to the substrate, affecting the heat exchange effect and possibly damaging the substrate.
A thick film heater flow channel mechanism is designed, including a flow channel structure in the heating seat, through the interlaced design of the first flow channel and the second flow channel and the arrangement of the flow guide block, disturbing the coolant to disperse the bubbles and ensuring the bubbles. Not attached to the substrate.
It effectively improves the heat exchange effect between the coolant and the thick film heater substrate, avoids substrate damage, and ensures uniform temperature distribution and efficient heat exchange.
Smart Images
Figure CN222246773U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of thick film heaters, in particular to a flow channel mechanism of a thick film heater. Background Art
[0002] In traditional thick film heaters, the heating seat used for heat exchange between the substrate and the coolant does not have a spoiler design. See the "New Energy Vehicle Cabin Heater" disclosed with publication number CN206287785U, which only sets a partition in the cavity of the shell to guide the liquid from the liquid inlet to the liquid outlet. However, it does not take into account that when the coolant enters the cavity of the shell from the liquid inlet, it will carry a large amount of air into the cavity together. Due to the presence of air, large bubbles will adhere to the thick film heater substrate, causing local dry burning of the thick film heater substrate, which not only affects the heat exchange effect between the coolant and the thick film heater substrate, but also makes the thick film heater substrate easily damaged. Utility Model Content
[0003] The technical problem to be solved by the utility model is to provide a thick film heater flow channel mechanism which can disturb the coolant while guiding the coolant flow normally to disperse the bubbles and prevent the bubbles from adhering to the thick film heater substrate.
[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a thick film heater flow channel mechanism, including a heating seat, the heating seat having a heating groove and a liquid inlet and a liquid outlet connected to the heating groove; a flow channel is formed in the heating groove, the flow channel is divided into a first flow channel and a second flow channel, the liquid inlet end of the first flow channel is connected to the liquid inlet, the liquid outlet end of the first flow channel is staggered with the liquid inlet end of the second flow channel, and the liquid outlet end of the second flow channel is connected to the liquid outlet.
[0005] Furthermore, the second flow channel is divided into a transfer flow channel and a liquid outlet flow channel, and the first flow channel, the transfer flow channel and the liquid outlet flow channel constitute a U-shaped flow channel; the liquid outlet end of the first flow channel is staggered with the liquid inlet end of the transfer flow channel; the liquid inlet end of the liquid outlet flow channel is staggered with the liquid outlet end of the transfer flow channel.
[0006] Furthermore, the transfer flow channel is a fan-shaped liquid flow channel.
[0007] Furthermore, the first flow channel includes an introduction flow channel and a main liquid inlet channel; the liquid inlet end of the introduction flow channel is connected to the liquid inlet port, and the liquid outlet end of the introduction flow channel is staggered with the liquid inlet end of the main liquid inlet channel.
[0008] Furthermore, the liquid outlet channel includes an outlet channel and a main outlet channel; the liquid outlet end of the outlet channel is connected to the liquid outlet, and the liquid inlet end of the outlet channel is staggered with the liquid outlet end of the main outlet channel.
[0009] Furthermore, guide blocks are arranged at equal intervals at a first spacing on the bottom of the heating groove along the length direction of the heating seat, and guide blocks are arranged at equal intervals at a second spacing along the width direction of the heating seat, and a plurality of the guide blocks constitute a plurality of lanes.
[0010] Furthermore, the first spacing is 2 mm to 4 mm, and the second spacing is 2 mm to 4 mm.
[0011] Furthermore, the bottom of the guide block gradually decreases in width toward the top of the guide block, and the bottom of the guide block is connected to the heating seat.
[0012] The beneficial effect of the utility model is that: a flow channel is added in the heating groove of the heating seat, and the flow channel can guide the flow direction of the coolant, so that the coolant can evenly act on each heat exchange area of the thick film heater substrate. At the same time, the flow channel is divided into a first flow channel and a second flow channel, and the liquid outlet end of the first flow channel is staggered with the liquid inlet end of the second flow channel. The staggered first flow channel and the second flow channel can disturb the flow of the coolant, so that the generated bubbles are dispersed to avoid the bubbles from adhering to the thick film heater substrate, thereby improving the heat exchange effect between the coolant and the thick film heater substrate. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 This is a schematic diagram of the structure of a thick film heater flow channel mechanism of the utility model;
[0014] Figure 2 This is a schematic diagram of the main structure of a thick film heater flow channel mechanism of the utility model;
[0015] Figure 3 for Figure 2 A schematic diagram of the cross-sectional structure of a thick film heater flow channel mechanism in the AA direction;
[0016] Figure 4 The temperature field image of the thick film heater flow channel mechanism proposed by the utility model when the thick film heater substrate is operated at 1KW power and a 60°C coolant flows through the thick film heater substrate and the contact end surface of the coolant at a flow rate of 1 liter per minute;
[0017] Figure 5 The thick film heater flow channel mechanism proposed in the utility model is a temperature field image of the end surface of the heating circuit set when the thick film heater substrate is operated at a power of 1KW and a 60°C coolant flows through the thick film heater substrate at a flow rate of 1 liter per minute;
[0018] Figure 6 The temperature field image of the thick film heater flow channel mechanism proposed by the utility model when the thick film heater substrate is operated at 2KW power and a 60°C coolant flows through the thick film heater substrate and the contact end surface of the coolant at a flow rate of 2 liters per minute;
[0019] Figure 7 The thick film heater flow channel mechanism proposed in the utility model is a temperature field image of the end surface of the heating circuit set when the thick film heater substrate is operated at a power of 2KW and a 60°C coolant flows through the thick film heater substrate at a flow rate of 2 liters per minute;
[0020] Figure 8 The temperature field image of the thick film heater flow channel mechanism proposed by the utility model when the thick film heater substrate is operated at 7.4KW power and a 60°C coolant flows through the thick film heater substrate and the contact end surface of the coolant at a flow rate of 7 liters per minute;
[0021] Fig. 9 The thick film heater flow channel mechanism proposed in the utility model is a temperature field image of the end surface of the heating circuit set by using a 60°C coolant flowing through the thick film heater substrate at a flow rate of 7 liters per minute when the thick film heater substrate is operated at a power of 7.4KW;
[0022] Description of labels:
[0023] 1. Heating seat; 11. Heating groove; 12. Liquid inlet; 13. Liquid outlet;
[0024] 2. Guide block;
[0025] 3. Flow channel; 31. First flow channel; 311. Inlet flow channel; 312. Main liquid inlet channel; 32. Transfer flow channel; 33. Liquid outlet flow channel; 331. Outlet flow channel; 332. Main liquid outlet channel. DETAILED DESCRIPTION
[0026] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in conjunction with the implementation modes and the accompanying drawings.
[0027] Please refer to Figure 1 and Figure 2 As shown, the utility model is a thick film heater flow channel mechanism, including a heating seat 1, the heating seat 1 has a heating groove 11 and a liquid inlet 12 and a liquid outlet 13 connected to the heating groove 11; a flow channel 3 is formed in the heating groove 11, and the flow channel 3 is divided into a first flow channel 31 and a second flow channel, the liquid inlet end of the first flow channel 31 is connected to the liquid inlet 12, the liquid outlet end of the first flow channel 31 is staggered with the liquid inlet end of the second flow channel, and the liquid outlet end of the second flow channel is connected to the liquid outlet 13.
[0028] Working principle: The coolant enters the heating groove 11 through the liquid inlet 12, and flows through each heat exchange area of the thick film heater substrate under the guidance of the flow channel 3, and finally discharges the heating seat 1 from the liquid outlet 13. In addition, during the flow of the coolant in the heating groove 11, since the liquid outlet end of the first flow channel 31 and the liquid inlet end of the second flow channel are staggered, the staggered first flow channel 31 and the second flow channel can disturb the flow of the coolant, so that the generated bubbles are dispersed, which can prevent the bubbles from adhering to the thick film heater substrate.
[0029] Please refer to Figure 1 and Figure 2 As shown, further, the second flow channel is divided into a transfer flow channel 32 and a liquid outlet flow channel 33, and the first flow channel 31, the transfer flow channel 32 and the liquid outlet flow channel 33 constitute a U-shaped flow channel 3; the liquid outlet end of the first flow channel 31 is staggered with the liquid inlet end of the transfer flow channel 32; the liquid inlet end of the liquid outlet flow channel 33 is staggered with the liquid outlet end of the transfer flow channel 32.
[0030] From the above description, it can be seen that the staggered liquid flow formed between the transfer channel 32 and the first channel 31 and the liquid outlet channel 33 can further disturb the cooling liquid so that the generated bubbles are dispersed to prevent the bubbles from adhering to the heat exchange area of the thick film heater substrate.
[0031] Please refer to Figure 1 and Figure 2 As shown, further, the transfer channel 32 is a fan-shaped liquid channel.
[0032] It can be seen from the above description that the fan-shaped transfer flow channel 32 can reduce the flow resistance of the coolant when it enters and exits the transfer flow channel 32 .
[0033] Please refer to Figure 1 and Figure 2 As shown, further, the first flow channel 31 includes an introduction flow channel 311 and a main liquid inlet channel 312; the liquid inlet end of the introduction flow channel 311 is connected to the liquid inlet port 12, and the liquid outlet end of the introduction flow channel 311 is staggered with the liquid inlet end of the main liquid inlet channel 312.
[0034] From the above description, it can be seen that when the coolant enters the introduction channel 311 from the liquid inlet 12, the staggered liquid flow formed between the introduction channel 311 and the main liquid inlet channel 312 can further disturb the coolant, so that the generated bubbles are dispersed, so as to avoid the bubbles adhering to the heat exchange area corresponding to the first channel 31 of the thick film heater substrate.
[0035] Please refer to Figure 1 and Figure 2As shown, further, the liquid outlet channel 33 includes an outlet channel 331 and a main outlet channel 332; the liquid outlet end of the outlet channel 331 is connected to the liquid outlet port 13, and the liquid inlet end of the outlet channel 331 is staggered with the liquid outlet end of the main outlet channel 332.
[0036] From the above description, it can be seen that in the process of the coolant flowing from the liquid outlet channel 33 toward the liquid outlet 13, a staggered liquid flow is formed between the main liquid outlet channel 332 and the outlet channel 331, which can disturb the coolant and break up the generated bubbles to prevent the bubbles from adhering to the area to be exchanged with heat corresponding to the liquid outlet channel 33 of the thick film heater substrate.
[0037] Please refer to Figure 1 and Figure 2 As shown, further, guide blocks 2 are equidistantly arranged on the bottom of the heating groove 11 along the length direction of the heating seat 1 at a first spacing, and guide blocks 2 are equidistantly arranged along the width direction of the heating seat 1 at a second spacing, and multiple guide blocks 2 constitute multiple lanes 3.
[0038] From the above description, it can be seen that a plurality of guide blocks 2 are equidistantly arranged at a first spacing in a first direction and equidistantly arranged at a second spacing in a second direction to form a plurality of flow channels 3, which can allow the coolant flowing in each flow channel 3 to mix with each other, thereby disturbing the coolant and breaking up the generated bubbles to prevent the bubbles from adhering to the thick film heater substrate.
[0039] Please refer to Figure 2 As shown, further, the first spacing is B, and the second spacing is C. Preferably, the first spacing B is 2 mm, 3 mm, or 4 mm, and the first spacing C is 2 mm, 3 mm, or 4 mm.
[0040] It can be seen from the above description that, while ensuring the guiding flow of the coolant, the spacing between adjacent guide blocks 2 is reasonably set so that the coolant flowing in each flow channel 3 can be mixed with each other, thereby disturbing the coolant.
[0041] In an optional implementation, the first spacing is 3 mm, and the second spacing is 3 mm.
[0042] Please refer to Figure 3 As shown, further, the width of the bottom of the guide block 2 gradually decreases toward the top of the guide block 2, and the bottom of the guide block 2 is connected to the heating seat.
[0043] From the above description, it can be seen that the structure of the guide block 2 being narrow at the top and wide at the bottom can not only enhance the setting strength of the guide block 2 in the heating groove 11, but also facilitate demoulding when the heating seat 1 and the guide block 2 are integrally formed.
[0044] Please refer to Figures 4 to 9As shown, when 60°C coolant is injected into the heating groove 11 of the heating seat 1, it can be seen that under low coolant flow and low heating power, as well as high coolant flow and high heating power, the thick film heater substrate and the coolant contact end surface and the heating circuit end surface can still maintain good temperature uniformity and surface temperature.
[0045] Embodiment 1
[0046] A thick film heater flow channel mechanism, please refer to Figures 1 to 3 As shown, it includes a heating seat 1 and a guide block 2. The heating seat 1 has a heating groove 11 and a liquid inlet 12 and a liquid outlet 13 connected to the heating groove 11; a flow channel 3 is formed in the heating groove 11, and the flow channel 3 is divided into a first flow channel 31 and a second flow channel. The liquid inlet end of the first flow channel 31 is connected to the liquid inlet 12, the liquid outlet end of the first flow channel 31 is staggered with the liquid inlet end of the second flow channel, and the liquid outlet end of the second flow channel is connected to the liquid outlet 13. The guide blocks 2 are arranged at an equal distance of 3mm on the bottom of the heating groove 11 along the length direction of the heating seat 1, and the guide blocks 2 are arranged at an equal distance of 3mm along the width direction of the heating seat 1. A plurality of the guide blocks 2 constitute a plurality of channels 3. The bottom of the guide block 2 gradually decreases in width toward the top of the guide block 2, and the bottom of the guide block 2 is connected to the heating seat.
[0047] Working principle: The guide block 2 guides the coolant to flow in the heating groove 11 to ensure that the coolant entering at the liquid inlet 12 can evenly flow through the heat exchange area of the thick film heater substrate, and then flow out from the liquid outlet 13. At the same time, multiple guide blocks 2 are arranged equidistantly at a first spacing in a first direction and equidistantly at a second spacing in a second direction to form multiple flow channels 3, so that the coolant flowing in each flow channel 3 can be mixed with each other, thereby disturbing the coolant and breaking up the generated bubbles to prevent the bubbles from adhering to the thick film heater substrate.
[0048] Embodiment 2
[0049] This embodiment further defines the structure of the flow channel 3 on the basis of the first embodiment, as follows:
[0050] Please refer to Figure 1 and Figure 2As shown, the second flow channel is divided into a transfer flow channel 32 and a liquid outlet flow channel 33, and the first flow channel 31, the transfer flow channel 32 and the liquid outlet flow channel 33 constitute a U-shaped flow channel 3; the liquid outlet end of the first flow channel 31 is staggered with the liquid inlet end of the transfer flow channel 32; the liquid inlet end of the liquid outlet flow channel 33 is staggered with the liquid outlet end of the transfer flow channel 32. The transfer flow channel 32 is a fan-shaped liquid flow channel. The first flow channel 31 includes an inlet flow channel 311 and a liquid inlet main flow channel 312; the liquid inlet end of the inlet flow channel 311 is connected to the liquid inlet port 12, and the liquid outlet end of the inlet flow channel 311 is staggered with the liquid inlet end of the liquid inlet main flow channel 312. The liquid outlet channel 33 includes an outlet channel 331 and a main outlet channel 332 ; the outlet end of the outlet channel 331 is connected to the liquid outlet port 13 , and the inlet end of the outlet channel 331 is interlaced with the outlet end of the main outlet channel 332 .
[0051] Working principle: When the coolant enters the introduction channel 311 from the liquid inlet 12, not only can the spaced guide blocks 2 disturb the coolant to break up the generated bubbles, but also the staggered liquid flow formed between the introduction channel 311 and the main liquid inlet channel 312 can further disturb the coolant to break up the generated bubbles, so as to avoid the bubbles adhering to the heat exchange area corresponding to the first channel 31 of the thick film heater substrate.
[0052] When the coolant flows from the liquid outlet channel 33 toward the liquid outlet port 13, a staggered liquid flow is formed between the main liquid outlet channel 332 and the outlet channel 331, which can disturb the coolant and break up the generated bubbles. In addition, the coolant in the outlet channel 331 can be disturbed by the guide blocks 2 arranged at intervals, so that the generated bubbles are further broken up, so as to avoid the bubbles adhering to the area to be exchanged in the heat exchange area corresponding to the liquid outlet channel 33 of the thick film heater substrate.
[0053] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.
Claims
1. A thick film heater flow channel mechanism, characterized in that: It includes a heating seat, which has a heating groove and a liquid inlet and a liquid outlet connected to the heating groove; a flow channel is formed in the heating groove, and the flow channel is divided into a first flow channel and a second flow channel, the liquid inlet end of the first flow channel is connected to the liquid inlet, the liquid outlet end of the first flow channel is staggered with the liquid inlet end of the second flow channel, and the liquid outlet end of the second flow channel is connected to the liquid outlet.
2. The thick film heater flow channel mechanism according to claim 1, characterized in that: The second flow channel is divided into a transfer flow channel and a liquid outlet flow channel, and the first flow channel, the transfer flow channel and the liquid outlet flow channel constitute a U-shaped flow channel; the liquid outlet end of the first flow channel is staggered with the liquid inlet end of the transfer flow channel; the liquid inlet end of the liquid outlet flow channel is staggered with the liquid outlet end of the transfer flow channel.
3. The thick film heater flow channel mechanism according to claim 2, characterized in that: The transfer flow channel is a fan-shaped liquid flow channel.
4. The thick film heater flow channel mechanism according to claim 2, characterized in that: The first flow channel includes an introduction flow channel and a main liquid inlet channel; the liquid inlet end of the introduction flow channel is connected to the liquid inlet port, and the liquid outlet end of the introduction flow channel is staggered with the liquid inlet end of the main liquid inlet channel.
5. The thick film heater flow channel mechanism according to claim 2 or 4, characterized in that: The liquid outlet channel comprises an outlet channel and a main outlet channel; the outlet end of the outlet channel is connected to the liquid outlet port, and the inlet end of the outlet channel is interlaced with the outlet end of the main outlet channel.
6. The thick film heater flow channel mechanism according to claim 1, characterized in that: Guide blocks are arranged at equal intervals at a first spacing along the length direction of the heating seat on the bottom of the heating groove, and guide blocks are arranged at equal intervals at a second spacing along the width direction of the heating seat. Multiple guide blocks form multiple lanes.
7. The thick film heater flow channel mechanism according to claim 6, characterized in that: The first spacing is 2 mm to 4 mm, and the second spacing is 2 mm to 4 mm.
8. The thick film heater flow channel mechanism according to claim 6, characterized in that: The bottom of the guide block gradually decreases in width toward the top of the guide block, and the bottom of the guide block is connected to the heating seat.