A liftable thermostatic heating device for workpiece baking
By designing a height-adjustable constant-temperature heating device, the problem of uneven heating of the catalyst layer in the membrane electrode proton exchange membrane baking device was solved, realizing uniform heating of the surface of the membrane electrode proton exchange membrane and uniform solidification of the catalyst slurry, thereby improving the stability of the catalyst layer and the proton conduction efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SONUS TECH (LANGFANG) CO LTD
- Filing Date
- 2025-06-13
- Publication Date
- 2026-06-02
AI Technical Summary
In the existing technology, the baking device for the proton exchange membrane of the membrane electrode is difficult to achieve uniform heating and curing of the catalyst layer, which affects the structural stability of the catalyst layer and the proton conduction efficiency.
A height-adjustable constant-temperature heating device was designed. The distance between the heating platform and the membrane electrode proton exchange membrane is adjusted by the lifting drive mechanism. Combined with the electric heating plate and the heat insulation layer, uniform heating of the membrane electrode proton exchange membrane surface and uniform solidification of the catalyst slurry are achieved.
Uniform heating of the proton exchange membrane surface and uniform solidification of the catalyst slurry were achieved, improving the structural stability of the catalyst layer and the proton conduction efficiency.
Smart Images
Figure CN224308874U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of workpiece baking technology, specifically to a height-adjustable constant temperature heating device for workpiece baking. Background Technology
[0002] The membrane electrode assembly (MEA) is a core component of a proton exchange membrane fuel cell (PEMFC), and its performance directly affects the cell's output power and lifespan. Spraying catalyst onto the proton exchange membrane (PEM) surface is one of the key processes in MEA fabrication, primarily used to construct the catalyst layer (CL) to enable electrochemical reactions (such as hydrogen oxidation at the anode and oxygen reduction at the cathode).
[0003] In the process of spraying catalyst onto the proton exchange membrane of a membrane electrode assembly (MEA), baking (drying and curing) is one of the key steps, directly affecting the structural stability of the catalyst layer, proton conduction efficiency, and gas diffusion performance. Therefore, it is necessary to provide a heating device suitable for uniformly heating and flattening the surface of the proton exchange membrane and uniformly curing the catalyst slurry on the MEA surface, a core component of a proton exchange membrane fuel cell. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides a height-adjustable constant-temperature heating device for workpiece baking, which is suitable for uniformly heating and flattening the surface of the proton exchange membrane of the membrane electrode, a core component of proton exchange membrane fuel cells, and for uniformly solidifying the catalyst slurry.
[0005] This utility model provides a height-adjustable constant-temperature heating device for workpiece baking, comprising:
[0006] Fixed base;
[0007] A lifting seat is provided above the fixed base, and the lower side of the lifting seat is provided with a plurality of lifting guide columns that extend downward and cooperate with the guide of the fixed base.
[0008] A lifting drive mechanism, wherein the lifting drive mechanism is used to drive the lifting seat to lift;
[0009] A heating platform is located on the upper side of the lifting seat and is used to heat the workpiece to be baked above it.
[0010] Furthermore, each of the four corners of the lower side of the lifting seat is provided with a lifting guide column, and the fixed base is provided with four linear guide bearings that cooperate with each of the lifting guide columns.
[0011] Furthermore, the lifting drive mechanism includes a drive motor and a worm gear screw jack, which are respectively fixedly mounted on the fixed base. The output shaft of the drive motor is connected to the worm gear screw jack via a coupling, and the upper end of the screw of the worm gear screw jack is fixedly connected to the lifting seat.
[0012] Furthermore, the heating platform includes:
[0013] The outer casing, the top of which is open;
[0014] An electric heating plate, wherein the electric heating plate is disposed within the outer casing;
[0015] An insulation layer is disposed between the outer shell and the electric heating plate.
[0016] Furthermore, the electric heating plate is equipped with a thermocouple.
[0017] Furthermore, one side of the housing is provided with an opening for the wiring terminals of the electric heating plate and the thermocouple to pass through.
[0018] Furthermore, it also includes an insulating support column, which is supported between the lifting seat and the heating platform.
[0019] Furthermore, it also includes a proximity sensor. A fixed ring is provided outside the lifting guide column. The proximity sensor is used to detect the fixed ring outside the lifting guide column. The height position of the proximity sensor is below the fixed ring and is electrically connected to the lifting drive mechanism.
[0020] The beneficial effects of this utility model are reflected in:
[0021] During baking, the membrane electrode proton exchange membrane can be clamped and fixed above the heating platform using a clamping fixture. Then, the lifting drive mechanism is controlled to drive the heating platform to a suitable position at a distance from the membrane electrode proton exchange membrane. The membrane electrode proton exchange membrane is then baked by the heating platform, thereby drying the membrane electrode proton exchange membrane coated with catalyst. This device is suitable for uniformly heating and flattening the surface of the membrane electrode proton exchange membrane, a core component of proton exchange membrane fuel cells, and for uniformly curing the catalyst slurry. Attached Figure Description
[0022] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.
[0023] Figure 1This is a schematic diagram of the overall structure of an embodiment of the present utility model;
[0024] Figure 2 This is an assembly drawing of the fixed base and the lifting seat according to an embodiment of the present utility model;
[0025] Figure 3 This is a schematic diagram of the lifting drive mechanism according to an embodiment of the present utility model;
[0026] Figure 4 This is an exploded view of the heating platform according to an embodiment of the present invention.
[0027] In the attached diagram, 100-fixed base; 110-linear guide bearing; 200-lifting seat; 210-lifting guide column; 211-fixed ring; 300-lifting drive mechanism; 310-drive motor; 311-coupling; 320-worm gear screw jack; 321-worm; 322-screw; 400-heating platform; 410-outer shell; 411-opening; 420-electric heating plate; 421-terminal block; 430-insulation layer; 440-thermocouple; 500-insulating support column; 600-proximity sensor. Detailed Implementation
[0028] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.
[0029] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this utility model pertains.
[0030] like Figures 1-4 As shown, this utility model embodiment provides a liftable constant temperature heating device for workpiece baking, including a fixed base 100, a lifting seat 200, a lifting drive mechanism 300 and a heating platform 400.
[0031] The lifting seat 200 is located above the fixed base 100, and the lower side of the lifting seat 200 is provided with a number of lifting guide columns 210 that extend downward and cooperate with the fixed base 100.
[0032] In this embodiment, refer to Figure 2 Each of the four corners of the lower side of the lifting seat 200 is provided with a lifting guide column 210, and the fixed base 100 is provided with four linear guide bearings 110 that cooperate with each lifting guide column 210.
[0033] The lifting drive mechanism 300 is used to drive the lifting seat 200 to lift.
[0034] In this embodiment, refer to Figure 3 The lifting drive mechanism 300 includes a drive motor 310 and a worm gear screw jack 320. The drive motor 310 and the worm gear screw jack 320 are respectively fixedly installed on the fixed base 100. The output shaft of the drive motor 310 is connected to the worm 321 of the worm gear screw jack 320 through a coupling 311. The upper end of the screw 322 of the worm gear screw jack 320 is fixedly connected to the lifting seat 200.
[0035] It should be noted that the worm gear screw jack 320 consists of a worm gear seat and a screw 322. During operation, the motor drives the worm 321 to rotate, and the worm 321 drives the worm gear to rotate. The worm gear is threadedly connected to the screw 322. The rotation of the worm gear will drive the screw 322 to move axially, thereby driving the lifting seat 200 to rise and fall.
[0036] The heating platform 400 is located on the upper side of the lifting seat 200 and is used to heat the workpiece to be baked above it.
[0037] In this embodiment, refer to Figure 4 The heating platform 400 includes a housing 410, an electric heating plate 420, and an insulation layer 430. The top of the housing 410 is open. The electric heating plate 420 is located inside the housing 410. The insulation layer 430 is specifically insulation cotton, located between the housing 410 and the electric heating plate 420, which can reduce the heat loss of the electric heating plate 420.
[0038] In this embodiment, a thermocouple 440 is provided inside the electric heating plate 420. The temperature of the electric heating plate 420 is fed back to the temperature control instrument PID control by the thermocouple 440 to adjust the temperature with an error of ±0.5℃.
[0039] To facilitate wiring, one side of the housing 410 is provided with a wiring terminal 421 for the power supply heating plate 420 and an opening 411 through which the thermocouple 440 passes.
[0040] In this embodiment, the heating device further includes an insulating support column 500, which is supported between the lifting seat 200 and the heating platform 400 to provide insulation between the heating platform 400 and the lifting seat 200.
[0041] In this embodiment, the heating device also includes a proximity sensor 600. A fixing ring 211 is provided outside a lifting guide column 210. The proximity sensor 600 is used to detect the fixing ring 211 outside the lifting guide column 210. The height position of the proximity sensor 600 is below the fixing ring 211 and is electrically connected to the lifting drive mechanism 300.
[0042] When the proximity sensor 600 detects the fixed ring 211, it automatically controls the lifting drive mechanism 300 to stop driving the heating platform 400 to rise. This can be used as a limit for the maximum rising height to prevent the heating platform 400 from getting too close to the proton exchange membrane, causing interference or damage.
[0043] During baking, the membrane electrode proton exchange membrane can be clamped and fixed above the heating platform 400 using a clamping fixture. Then, the lifting drive mechanism 300 is controlled to drive the heating platform 400 to a suitable position at a distance from the membrane electrode proton exchange membrane. The membrane electrode proton exchange membrane is then baked by the heating platform 400, thereby drying the membrane electrode proton exchange membrane coated with catalyst. This device is suitable for uniformly heating and flattening the surface of the membrane electrode proton exchange membrane, a core component of proton exchange membrane fuel cells, and for uniformly curing the catalyst slurry.
[0044] It should be noted that the required baking distance between the heating platform 400 and the membrane electrode proton exchange membrane varies for different spraying processes. This application adjusts the distance between the heating platform 400 and the membrane electrode proton exchange membrane by using the lifting drive mechanism 300 to meet the baking requirements of different spraying processes.
[0045] Finally, it should be noted that, in addition to baking and curing the catalyst slurry on the surface of the proton exchange membrane of the membrane electrode, the lifting and constant temperature heating device of this embodiment should also be included in the protection scope of this utility model for baking other similar workpieces.
[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.
Claims
1. A height-adjustable constant-temperature heating device for workpiece baking, characterized in that, include: Fixed base; A lifting seat is provided above the fixed base, and the lower side of the lifting seat is provided with a plurality of lifting guide columns that extend downward and cooperate with the guide of the fixed base. A lifting drive mechanism, wherein the lifting drive mechanism is used to drive the lifting seat to lift; A heating platform is located on the upper side of the lifting seat and is used to heat the workpiece to be baked above it.
2. The adjustable constant-temperature heating device for workpiece baking according to claim 1, characterized in that, Each of the four corners of the lower side of the lifting seat is provided with a lifting guide column, and the fixed base is provided with four linear guide bearings that cooperate with each of the lifting guide columns.
3. The adjustable constant-temperature heating device for workpiece baking according to claim 1, characterized in that, The lifting drive mechanism includes a drive motor and a worm gear screw jack. The drive motor and the worm gear screw jack are respectively fixedly installed on the fixed base. The output shaft of the drive motor is connected to the worm gear of the worm gear screw jack through a coupling. The upper end of the screw of the worm gear screw jack is fixedly connected to the lifting seat.
4. The adjustable constant-temperature heating device for workpiece baking according to claim 1, characterized in that, The heating platform includes: The outer casing, the top of which is open; An electric heating plate, wherein the electric heating plate is disposed within the outer casing; An insulation layer is disposed between the outer shell and the electric heating plate.
5. The adjustable constant-temperature heating device for workpiece baking according to claim 4, characterized in that, The electric heating plate is equipped with a thermocouple.
6. The adjustable constant-temperature heating device for workpiece baking according to claim 5, characterized in that, One side of the housing is provided with an opening for the wiring terminals of the electric heating plate and the thermocouple to pass through.
7. The adjustable constant-temperature heating device for workpiece baking according to claim 4, characterized in that, It also includes an insulating support column, which is supported between the lifting seat and the heating platform.
8. The adjustable constant-temperature heating device for workpiece baking according to claim 1, characterized in that, It also includes a proximity sensor. A fixed ring is provided outside the lifting guide column. The proximity sensor is used to detect the fixed ring outside the lifting guide column. The height position of the proximity sensor is below the fixed ring and is electrically connected to the lifting drive mechanism.