CN109743796B - Household appliance - Google Patents
Household appliance Download PDFInfo
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- CN109743796B CN109743796B CN201910157199.1A CN201910157199A CN109743796B CN 109743796 B CN109743796 B CN 109743796B CN 201910157199 A CN201910157199 A CN 201910157199A CN 109743796 B CN109743796 B CN 109743796B
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- temperature controller
- thick film
- film heater
- fixing device
- power input
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- 238000010438 heat treatment Methods 0.000 claims abstract description 15
- 239000000758 substrate Substances 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 description 8
- 238000003825 pressing Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000000605 extraction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Control Of Resistance Heating (AREA)
- Resistance Heating (AREA)
Abstract
The utility model provides a household appliance, includes thick film heater subassembly, thick film heater subassembly has thick film heater, electric connection spare and temperature controller, thick film heater includes the base plate, set up thick film heating zone and power input district on the base plate, electric connection spare connects in power input district, the temperature controller setting is in thick film heating zone, thick film heater subassembly still includes temperature controller fixing device, temperature controller fixing device is equipped with the temperature controller mounting hole, the lower extreme that the temperature controller is close to thick film heater is provided with the temperature controller fixed step that lateral dimension is greater than the temperature controller mounting hole aperture, the temperature controller mounting hole is passed to the upper end of temperature controller, temperature controller fixing device presses on the fixed step of temperature controller, temperature controller fixing device and thick film heater pass through connection structure and install together, fix the temperature controller between temperature control fixing device and thick film heater. The thick film heater assembly is simple and compact in structure, low in cost, convenient to assemble and replace a temperature controller and high in assembly efficiency.
Description
Technical Field
The present invention relates to heating devices and, in particular, to a thick film heater assembly.
Background
Thick film heating is comparatively novel heating method, has advantages such as small, efficient, but in the in-service use, also has some problems:
Because the thick film conductive area cannot bear larger mechanical force, the thick film heating part is powered at present, usually, a 250 or 187 inserting sheet is firstly injection molded on a plastic part, then a metal sheet with certain elasticity is led out from the inserting sheet, and the other end of the metal sheet is pressed on the thick film conductive area, or the metal sheet is welded on the thick film conductive area, and then the plastic part is fixed on a substrate heated by the thick film. The mode has the advantages of complex structure, more occupied space, low production efficiency and higher cost.
Chinese patent application CN201320424517.4 discloses a fixing method of a temperature controller for a thick film heater, it can be seen that a screw seat 54 and a pressing bar 5 are required to be additionally arranged on the thick film heating plate, and before the temperature controller 4 is mounted on the contact piece 43, the pressing bar 5 needs to be installed into the temperature controller 4 first, and then the contact piece 43 is riveted on the temperature controller 4. The temperature controller assembly has poor universality, and if the temperature controller needs to be replaced, the temperature controller needs to be replaced together with the pressing bar 5, and the waste is relatively high. In addition, in this scheme, when layering 5 fixed temperature controller 4, need the angle of manual adjustment temperature controller 4, assembly efficiency is lower.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a household appliance which has the advantages of simple and compact structure, lower cost, convenient assembly and temperature controller replacement and high assembly efficiency.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
The utility model provides a household appliance, includes thick film heater subassembly, thick film heater subassembly includes thick film heater, electric connection spare and temperature controller, thick film heater includes the base plate, sets up thick film heating zone on the base plate and be used for the power input district of input power, electric connection spare connects the power input district is used for with the external input power in power input district, the temperature controller sets up thick film heating zone is used for detecting thick film heater surface's temperature, thick film heater subassembly still includes temperature controller fixing device, temperature controller fixing device is equipped with the temperature controller mounting hole, the temperature controller is close to thick film heater's lower extreme is provided with transverse dimension and is greater than the temperature controller fixed step in temperature controller mounting hole aperture, the upper end of temperature controller passes the temperature controller mounting hole, temperature controller fixing device presses on the temperature controller fixed step, temperature controller fixing device with thick film heater is in the same place through connection structure installation, so as will the temperature controller is fixed between the temperature controller fixing device and the thick film heater.
Further:
the upper end of temperature controller is equipped with a pair of temperature controller inserted sheet that extends to both sides, the temperature controller mounting hole is equipped with the confession that extends to both sides the temperature controller inserted sheet passes a pair of fluting, a pair of grooved edge is provided with a temperature controller circumference location arch respectively, every temperature controller circumference location protruding butt is in correspondence the temperature controller inserted sheet, is used for the restriction the temperature controller rotates.
The connecting structure comprises a screw, a screw fixing hole formed in the thick film heater and a screw fixing column formed in the temperature controller fixing device, wherein the screw penetrates through the screw fixing hole to be connected with the screw fixing column, and the temperature controller is tightly pressed between the temperature controller fixing device and the thick film heater.
The thick film heater comprises an electric connecting piece, wherein the electric connecting piece is an L-shaped electric connecting inserting piece, the thick film heater assembly further comprises an inserting piece fixing device, the inserting piece fixing device is provided with an insulating inserting piece limiting hole, the vertical upper end of the electric connecting inserting piece is a power input end, the power input end of the electric connecting inserting piece penetrates through the inserting piece limiting hole, and the horizontal lower end of the electric connecting inserting piece is pressed by the inserting piece fixing device to be in the power input area of the thick film heater.
The horizontal lower end of the electrical connection insert is directed towards the edge of the substrate of the thick film heater.
The electrical connection insert and the power input region of the thick film heater are soldered together.
The inserting sheet fixing device is provided with screw fixing columns, the thick film heater is provided with corresponding screw fixing holes, and the inserting sheet fixing device, the electric connection inserting sheet and the thick film heater are fixed and pressed through screws penetrating through the screw fixing holes and connected with the screw fixing columns.
The inserting sheet fixing device and the temperature controller fixing device are integrally formed to form an integral fixing support.
The invention has the following beneficial effects:
The thick film heater assembly is provided with the temperature controller fixing device, the temperature controller fixing device is provided with the temperature controller mounting hole, the upper end of the temperature controller passes through the temperature controller mounting hole on the temperature controller fixing device, the temperature controller is provided with the temperature controller fixing step close to the lower end of the thick film heater, the temperature controller fixing device is pressed on the temperature controller fixing step, and the temperature controller fixing device and the thick film heater are arranged together through the connecting structure so as to tightly press and fix the temperature controller between the temperature controller fixing device and the thick film heater.
In the preferred scheme, through the design of temperature controller inserted sheet, temperature controller mounting hole both sides fluting and temperature controller circumference location arch, temperature controller circumference location arch butt in the temperature controller inserted sheet, can restrict the temperature controller and rotate, reach and restrict the temperature controller degree of freedom completely, make the temperature controller no longer can rotate, improved the reliability of temperature controller.
In the preferred scheme, adopt the electric connection inserted sheet that is "L" shape as the electric connector who connects power input, thick film heater subassembly still is provided with inserted sheet fixing device, inserted sheet fixing device is equipped with insulating inserted sheet spacing hole, the vertical upper end of electric connection inserted sheet is the power input end, the power input end of electric connection inserted sheet passes the spacing hole of inserted sheet, inserted sheet fixing device will the horizontal lower extreme compression of electric connection inserted sheet is in thick film heater the power input area adopts this kind of electric connection inserted sheet and mounting structure design, has further simplified structural complexity and reduced occupation space for prior art, has improved the production efficiency of preparation thick film heater subassembly, has reduced its cost of manufacture. Meanwhile, the L-shaped electric connection inserting sheet is adopted as electric connection, the degree of freedom of the electric connection inserting sheet is fully limited through the inserting sheet limiting hole of the inserting sheet fixing device, so that the electric connection inserting sheet and the power input area are accurately aligned, and the electric connection inserting sheet is tightly pressed on the power input area of the thick film heater by the inserting sheet fixing device, so that when the electric connection inserting sheet is subjected to external force, such as the extraction force of a wire harness terminal, the electric connection inserting sheet and the power input area of the thick film heater can be prevented from being influenced, and the electric conductivity is prevented from being influenced.
Further, the horizontal lower end of the L-shaped electric connection inserting sheet faces the edge of the thick film heater substrate, so that subsequent welding work is facilitated.
In the preferred scheme, through integrating inserted sheet fixing device and temperature controller fixing device integrated into one piece together, can further improve assembly efficiency, reduced the cost of manufacture moreover.
Drawings
Fig. 1 is a schematic diagram of a thick film heater in one embodiment of the invention.
Fig. 2 is a schematic diagram of two thermostats in an embodiment of the invention.
FIG. 3 is a schematic view of two tabs in one embodiment of the invention.
FIG. 4 is a schematic view of an integrally formed rear bracket of a tab holding device and a thermostat holding device in accordance with one embodiment of the present invention.
FIG. 5 is a schematic illustration of the pre-assembly of the blade and thermostat to the bracket in one embodiment of the invention.
Fig. 6 is a schematic diagram of an embodiment of the present invention after fitting the blade, thermostat, bracket to the thick film heater.
Detailed Description
The following describes embodiments of the present invention in detail. It should be emphasized that the following description is merely exemplary in nature and is in no way intended to limit the scope of the invention or its applications.
Referring to fig. 1 to 6, in one embodiment, a thick film heater assembly includes a thick film heater 1, electrical connections 6, a thermostat 7, and a thermostat fixture 10. The thick film heater 1 comprises a substrate 2, a thick film heating zone 3 arranged on the substrate 2 and a power input zone 4 for inputting power, wherein the electric connector 6 is connected with the power input zone 4 and is used for externally connecting the power input zone 4 to the input power, and the temperature controller 7 is arranged in the thick film heating zone 3 and is used for detecting the surface temperature of the thick film heater 1. The temperature controller fixing device 10 is provided with a temperature controller mounting hole 11, the lower end of the temperature controller 7, which is close to the thick film heater 1, is provided with a temperature controller fixing step 9 with a transverse dimension larger than the aperture of the temperature controller mounting hole 11, the upper end of the temperature controller 7 passes through the temperature controller mounting hole 11, the temperature controller fixing device 10 is pressed on the temperature controller fixing step 9, and the temperature controller fixing device 10 and the thick film heater 1 are mounted together through a connecting structure, so that the temperature controller 7 is fixed between the temperature controller fixing device and the thick film heater 1. By adopting the design, compared with the prior art, the thick film heater assembly is simple and compact in structure, not only reduces the occupied space, but also is convenient to assemble and replace the temperature controller, has high assembly efficiency, can be directly used and replaced with standard temperature controllers, and does not need to customize special temperature controllers.
In a preferred embodiment, a pair of temperature controller inserting pieces 8 extending towards two sides are arranged at the upper end of the temperature controller 7, a pair of slots extending towards two sides and allowing the temperature controller inserting pieces 8 to pass through are arranged in the temperature controller mounting holes 11, a pair of temperature controller circumferential positioning protrusions 12 are respectively arranged at the edges of the slots, and each temperature controller circumferential positioning protrusion 12 is abutted to the corresponding temperature controller inserting piece 8 and used for limiting the rotation of the temperature controller 7. Through this kind of design, temperature controller circumference location protruding 12 butt in temperature controller inserted sheet 8 can restrict temperature controller 7 rotation, reaches the effect of the 7 degree of freedom of complete restriction temperature controller, makes temperature controller 7 no longer can rotate, has improved temperature controller 7's reliability. In a typical embodiment, the thermostat 7 has a cylindrical structure, and the thermostat fixing step 9 is also cylindrical.
In a preferred embodiment, the connecting structure comprises a screw 16, a screw fixing hole 5 formed on the thick film heater 1 and a screw fixing post 13 formed on the temperature controller fixing device 10, wherein the screw 16 passes through the screw fixing hole 5 to be connected with the screw fixing post 13, so that the temperature controller 7 is pressed between the temperature controller fixing device and the thick film heater 1.
In a preferred embodiment, the electrical connector 6 is an electrical connection insert in an L shape, the thick film heater assembly further comprises an insert fixing device 14, the insert fixing device 14 is provided with an insulating insert limiting hole 15, a vertical upper end of the electrical connection insert is a power input end, the power input end of the electrical connection insert passes through the insert limiting hole 15, and a horizontal lower end of the electrical connection insert is pressed by the insert fixing device 14 in the power input area 4 of the thick film heater 1. Compared with the prior art, the electrical connection inserting piece and the installation structure design thereof further simplify the structural complexity, reduce the occupied space, improve the production efficiency of manufacturing the thick film heater assembly and reduce the manufacturing cost of the thick film heater assembly. Meanwhile, since the electric connection inserting sheet in the L shape is adopted as electric connection, and the degree of freedom of the electric connection inserting sheet is fully limited through the inserting sheet limiting hole 15 of the inserting sheet fixing device 14, the electric connection inserting sheet and the power input area 4 can be accurately aligned, and the inserting sheet fixing device 14 plays a role in pressing the electric connection inserting sheet on the power input area 4 of the thick film heater 1, when the electric connection inserting sheet is subjected to external force, such as the extraction force of a wire harness terminal, the electric connection inserting sheet and the connection between the electric connection inserting sheet and the power input area 4 of the thick film heater 1 can be prevented from being influenced, so that the electric conductivity is not influenced.
In a more preferred embodiment, the horizontal lower end of the electrical connection tab is directed towards the edge of the substrate 2 of the thick film heater 1. By the design, subsequent welding work is further facilitated.
In a preferred embodiment, the electrical connection tabs and the power input region 4 of the thick film heater 1 are soldered together to achieve more reliable electrical conductivity.
In a preferred embodiment, the insert fixing device 14 is provided with screw fixing posts 13, the thick film heater 1 is provided with corresponding screw fixing holes 5, and the insert fixing device 14, the electrical connection insert and the thick film heater 1 are fixed and pressed by screws 16 penetrating through the screw fixing holes 5 and connecting the screw fixing posts 13.
In a preferred embodiment, the tab holding device 14 and the thermostat holding device 10 are integrally formed to form an integral holding bracket. By adopting an integrated molding mode of integrating the insert fixing device 14 and the temperature controller fixing device 10, the assembly efficiency can be further improved, and the manufacturing cost is reduced.
In another aspect, the present invention also provides a household appliance having a thick film heater assembly of any of the foregoing embodiments. The household appliance can be, for example, an appliance such as a dishwasher which needs to have a heating function.
The foregoing is a further detailed description of the invention in connection with specific/preferred embodiments, and it is not intended that the invention be limited to such description. It will be apparent to those skilled in the art that several alternatives or modifications can be made to the described embodiments without departing from the spirit of the invention, and these alternatives or modifications should be considered to be within the scope of the invention.
Claims (9)
1. The utility model provides a household electrical appliance, its needs possess heating function's household electrical appliance, includes thick film heater subassembly, thick film heater subassembly includes thick film heater, electric connection spare and temperature controller, thick film heater includes the base plate, sets up thick film heating zone on the base plate and be used for the power input district, electric connection spare connects the power input district is used for with the external power input of power input district, the temperature controller sets up thick film heating zone is used for detecting thick film heater surface's temperature, its characterized in that, thick film heater subassembly still includes temperature controller fixing device, temperature controller fixing device is equipped with the temperature controller mounting hole, the temperature controller is close to the lower extreme of thick film heater is provided with the lateral dimension and is greater than the temperature controller fixed step in temperature controller mounting hole aperture, the upper end of temperature controller passes the temperature controller mounting hole, temperature controller fixing device presses on the temperature controller fixed step, temperature controller fixing device with thick film heater is in the same place through connection structure installation, thereby will be fixed between temperature controller fixing device and the thick film heater.
2. The household appliance according to claim 1, wherein a pair of temperature controller inserting pieces extending to two sides are arranged at the upper end of the temperature controller, a pair of slots for the temperature controller inserting pieces to pass through are arranged at the temperature controller mounting holes extending to two sides, a temperature controller circumferential positioning protrusion is respectively arranged at the edges of the pair of slots, and each temperature controller circumferential positioning protrusion is abutted to the corresponding temperature controller inserting piece and used for limiting the rotation of the temperature controller.
3. The household appliance according to claim 1 or 2, wherein the connection structure comprises a screw, a screw fixing hole provided on the thick film heater, and a screw fixing post provided on the thermostat fixing device, the screw passing through the screw fixing hole to connect the screw fixing post, and the thermostat is compressed between the temperature control fixing device and the thick film heater.
4. The household appliance of any one of claims 1 to 2, wherein the electrical connector is an electrical connection tab in the shape of an "L", the thick film heater assembly further comprising a tab fixture, the tab fixture being provided with an insulated tab spacing hole, the vertical upper end of the electrical connection tab being a power input, the power input of the electrical connection tab passing through the tab spacing hole, the horizontal lower end of the electrical connection tab being pressed against the power input area of the thick film heater by the tab fixture.
5. The household appliance of claim 4, wherein a horizontal lower end of the electrical connection tab is oriented toward an edge of the substrate of the thick film heater.
6. The household appliance of claim 4, wherein said electrical connection tab and said power input area of said thick film heater are welded together.
7. The home appliance of claim 4, wherein the tab fixing means is provided with screw fixing posts, and the thick film heater is provided with corresponding screw fixing holes, and the tab fixing means, the electrical connection tab and the thick film heater are fixed and pressed by screws passing through the screw fixing holes and connecting the screw fixing posts.
8. The household appliance of claim 4, wherein the insert fixing device and the temperature controller fixing device are integrally formed to form an integral fixing bracket.
9. The household appliance of claim 1, wherein the household appliance is a dishwasher.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910157199.1A CN109743796B (en) | 2019-03-01 | 2019-03-01 | Household appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910157199.1A CN109743796B (en) | 2019-03-01 | 2019-03-01 | Household appliance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109743796A CN109743796A (en) | 2019-05-10 |
| CN109743796B true CN109743796B (en) | 2024-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910157199.1A Active CN109743796B (en) | 2019-03-01 | 2019-03-01 | Household appliance |
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| Country | Link |
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| CN (1) | CN109743796B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004060949A1 (en) * | 2003-12-23 | 2006-02-09 | BSH Bosch und Siemens Hausgeräte GmbH | Thick film heater for fluids and instantaneous water heaters |
| CN101778501A (en) * | 2010-02-05 | 2010-07-14 | 美的集团有限公司 | Thick film heating assembly with dry burning protection function |
| CN202931574U (en) * | 2012-10-22 | 2013-05-08 | 九阳股份有限公司 | Dry burning-resistant thick membrane heating device and thick membrane heating kettle |
| CN207099344U (en) * | 2017-08-02 | 2018-03-13 | 杭州河合电器股份有限公司 | Dual temperature control integral type thick film heater |
| CN207513939U (en) * | 2017-11-08 | 2018-06-19 | 江门市地尔汉宇电器股份有限公司 | A kind of heated type water pump with thermel protection device |
| CN210007915U (en) * | 2019-03-01 | 2020-01-31 | 佛山市沃熙电器科技有限公司 | thick film heater assembly |
-
2019
- 2019-03-01 CN CN201910157199.1A patent/CN109743796B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004060949A1 (en) * | 2003-12-23 | 2006-02-09 | BSH Bosch und Siemens Hausgeräte GmbH | Thick film heater for fluids and instantaneous water heaters |
| CN101778501A (en) * | 2010-02-05 | 2010-07-14 | 美的集团有限公司 | Thick film heating assembly with dry burning protection function |
| CN202931574U (en) * | 2012-10-22 | 2013-05-08 | 九阳股份有限公司 | Dry burning-resistant thick membrane heating device and thick membrane heating kettle |
| CN207099344U (en) * | 2017-08-02 | 2018-03-13 | 杭州河合电器股份有限公司 | Dual temperature control integral type thick film heater |
| CN207513939U (en) * | 2017-11-08 | 2018-06-19 | 江门市地尔汉宇电器股份有限公司 | A kind of heated type water pump with thermel protection device |
| CN210007915U (en) * | 2019-03-01 | 2020-01-31 | 佛山市沃熙电器科技有限公司 | thick film heater assembly |
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| Publication number | Publication date |
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| CN109743796A (en) | 2019-05-10 |
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Address after: 528300 one of 2219, 22 / F, block 9, new Xingfu Linghui home, 1 Guizhou Avenue West, Xingfu community, Ronggui street, Shunde District, Foshan City, Guangdong Province (residence declaration) Applicant after: FOSHAN WOXI ELECTRICAL TECHNOLOGY Co.,Ltd. Address before: 528300 one of the first floor, No.2, 1st Street, Fengxiang Road, Daliang Jinbang neighborhood committee, Shunde District, Foshan City, Guangdong Province Applicant before: FOSHAN WOXI ELECTRICAL TECHNOLOGY Co.,Ltd. |
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Effective date of registration: 20230918 Address after: 528305 Building D6, Shanghua Intelligent Manufacturing Industrial Park, Lecong Town, Shunde District, Foshan City, Guangdong Province (Residence Application) Applicant after: FOSHAN BEST ELECTRICAL APPLIANCE TECHNOLOGY Co.,Ltd. Address before: 528300 one of 2219, 22 / F, block 9, new Xingfu Linghui home, 1 Guizhou Avenue West, Xingfu community, Ronggui street, Shunde District, Foshan City, Guangdong Province (residence declaration) Applicant before: FOSHAN WOXI ELECTRICAL TECHNOLOGY Co.,Ltd. |
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