CN201359325Y - Electric heater - Google Patents
Electric heater Download PDFInfo
- Publication number
- CN201359325Y CN201359325Y CNU2008202096314U CN200820209631U CN201359325Y CN 201359325 Y CN201359325 Y CN 201359325Y CN U2008202096314 U CNU2008202096314 U CN U2008202096314U CN 200820209631 U CN200820209631 U CN 200820209631U CN 201359325 Y CN201359325 Y CN 201359325Y
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- Prior art keywords
- heat
- metal shell
- heating element
- sheet heating
- electric heater
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Abstract
The utility model relates to an electric heater, which comprises two or more than two sheet heating elements and metal cases, wherein the sheet heating elements have electrodes; and bodies of the sheet heating elements are insulated; at least one sheet heating element is arranged in an inner cavity of each metal case; the electrodes are exposed out of the metal cases; the cases are arranged in parallel and spaced at a distance, so air passages used for letting air pass from two adjacent metal cases are limited; and heat radiating fins which are fixedly connected with the opposite outer wall surfaces of the two adjacent metal cases are arranged in the air passages. The utility model has the advantages of environmental protection, safety, high heat exchange efficiency, simple structure, low cost and easy recovery.
Description
Technical field
The utility model relates to a kind of electric heater, especially a kind of need be to the electric heater that uses on the electric heating appliance of air heat and the drying equipment.
Background technology
Existing air-conditioning, warm-air drier, dryer and industry are from changing drying device, equipment such as tobacco leaf or wood drier all needs to use electric heater, be used for air heat, take the desired position to by the air that will add after the air blowing device will be heated then equipment.Electric heater in existing this kind equipment, adopt electrothermal tube mostly, resistance wire or PTC are as heater body, is example with PTC as the electric heater of heating element heater, its basic structure is respectively to be provided with a slice sheet metal (constituting the PTC structure of a plurality of parallel connections) on the two sides of a plurality of PTC as electrode, the corrugated that this sheet metal is bent to or be arranged to the vertical bar shape, this sheet metal one side is as the electrode of PTC, on the other hand also as the heat-dissipating fin of PTC, the sheet metal of PTC both sides is connected power supply, then make heater element PTC heating, heat passes to ambient air by its sheet metal as heat-dissipating fin, with air heat.With a plurality of (being generally four or six) so electric heater connection of structure, then can constitute a combined electrical heater, such combined electrical heater just can be used for air-conditioning, warm-air drier, dryer and industry to be used from changing on the drying equipment such as drying device.
The electric heater of said structure and the combined electrical heaters that constitute with a plurality of electric heaters with spline structure, because its heat-dissipating fin and electrode are same sheet metal, so it is charged on the heat-dissipating fin, therefore heat-dissipating fin exists and reveals electricity danger, in order to prevent that the user from getting an electric shock, just must carry out anti-necessarily electric treatment to this type of electric heater or combined electrical heater, generally be to add insulating barrier, add insulating barrier and increased the cost of electric heater or combined electrical heater on the one hand, also increase thermal resistance on the other hand, caused its thermal efficiency not high.
In addition, this class electric heater or combined electrical heater are subjected to the restriction of the performance of PTC own owing to adopt PTC as heating element heater, and it can not reach the higher temperature heating, and as surpassing 260 ℃, then PTC can the automatic constant uniform temperature and can not continue to heat up; Again, if any one PTC in electric heater or the combined electrical heater damages, then whole electric heater or combined electrical heater are scrapped, and cause the user to increase use cost.Again, the PTC heating element heater contains lead, and electric heater of scrapping or combined electrical heater can be worked the mischief to environment as not handling then, are increased processing cost again if handle.
Summary of the invention
The purpose of this utility model is to overcome the problems referred to above, provides a kind of novel environment friendly safety, electric heater that heat exchange efficiency is high to society.
Another purpose of the present utility model is to provide a kind of to society to connect the combined electrical heater that constitutes by a plurality of electric heaters with spline structure.
The technical solution of the utility model is: design a kind of electric heater, the sheet heating element and the metal shell that comprise electroded body insulation, described sheet heating element is positioned at the cavity of described metal shell, is provided with heat-dissipating fin with the outer wall of at least one side of the pairing metal shell of heating face of described sheet heating element.
Be filled with heat-conducting glue in the gap between the cavity inner wall of the outer wall of described sheet heating element and described metal shell.
Described heat-conducting glue is the high temperature heat-conducting silicone grease.
As to further improvement of the utility model, the utility model also can be designed to a kind of combined electrical heater, the sheet heating element and the metal shell that comprise electroded body insulation more than two or two, in the cavity of each metal shell, be provided with a slice sheet heating element, a described metal shell determining deviation at interval is arranged in parallel, make the air duct of air thereby be defined for, in described air duct, be provided with the heat-dissipating fin of fixedlying connected with the opposite face outer wall of adjacent two metal shells from passing through between adjacent two metal shells.
Be filled with heat-conducting glue in the gap between the cavity inner wall of the outer wall of described sheet heating element and described metal shell.
Described heat-conducting glue is the high temperature heat-conducting silicone grease.
On the outer wall of the lateral surface of the metal shell of described combined electrical heater outermost both sides, be provided with heat-dissipating fin.
The end face of the heat-dissipating fin on the outer wall of the lateral surface of the metal shell of described outermost both sides is provided with stator.
On described stator, be provided with Thermal Cutoffs or temperature detect switch (TDS), perhaps Thermal Cutoffs and temperature detect switch (TDS), described Thermal Cutoffs or/and temperature detect switch (TDS) connect with the electrode of described sheet heating element.
Described sheet heating element is brilliant porcelain thick film electric heating substrate or ceramic thick film electric heating substrate or other sheet heating element.
Described heat-dissipating fin is corrugated sheet metal or the sheet metal that is arranged in parallel.
The utility model is owing to adopted the sheet heating element that is provided with the body insulation in the cavity of metal shell, insulate between sheet heating element and the metal shell, like this with regard to the charged problem of the heat-dissipating fin that has overcome existing like product, thereby avoided taking place the problem of Danger Electric shock risk; Owing to adopted the structure that is filled with heat-conducting glue in the gap between the cavity inner wall of the outer wall of described sheet heating element and described metal shell, made like this to the utlity model has the high advantage of heat transfer efficiency; In addition, what this sheet heater element adopted is brilliant porcelain thick film electric heating substrate or ceramic thick film electric heating substrate, do not contain plumbous composition, meet the requirement of ROHS, so even there is not the problem of environmental pollution in the electric heater of scrapping yet, and the utility model also has simple in structure, and is with low cost, easily the advantage that reclaims.The utility model is owing to adopted the structure that is filled with heat-conducting glue in the outer wall of described sheet heating element and the gap between the described metal shell inwall, both made is that single heater element breaks down, can change easily, can be whole not discarded, maintenance cost is declined to a great extent.
Description of drawings
Fig. 1 is the perspective view of a kind of embodiment of the utility model.
Fig. 2 is the perspective view of second kind of embodiment of the utility model.
Fig. 3 is the perspective view of the third embodiment of the utility model.
Fig. 4 is that Fig. 1 is to circuit theory schematic diagram embodiment illustrated in fig. 3.
The specific embodiment
See also Fig. 1, Fig. 1 is the perspective view of a kind of embodiment of the utility model.It is a kind of combined electrical heater, the sheet heating element 1 that comprises 6 body insulation of belt electrode 11,12 reaches and 6 metal shells 2 of being with cavitys 21, certainly, described sheet heating element 1 not necessarily will equate with the quantity of metal shell 2, can hold one or more sheet heating element 1 in the metal shell 2.The sheet heating element 1 of so-called body insulation is meant on the outer wall of sheet heating element 1 and is provided with insulating barrier, to insulate between assurance sheet heating element 1 and the described metal shell.Described electrode 11,12 exposes to outside the metal shell 2, is inserted with blocks of shape heater element 1 and (certainly, also can inserts multi-disc in the cavity 21 of each metal shell.Among the figure for the convenience of view, the a slice of only having drawn sheet heating element 1, and be in the extraction state), described metal shell 2 determining deviation at interval is arranged in parallel, make the air duct 22 of air thereby be defined for from passing through between adjacent two metal shells 2, be provided with the heat-dissipating fin 3 of fixedlying connected with the opposite face outer wall of adjacent two metal shells 2 in described air duct 22, the heat-dissipating fin 3 in the present embodiment is corrugated aluminium flakes.Metal shell 2 in the present embodiment is an aluminum shell.In order to guarantee heat transfer efficiency and waterproof effect, in the outer wall of described sheet heating element 1 and the gap between described metal shell 2 inwalls, be filled with the heat-conducting glue (not shown).Its preferable heat-conducting glue is the high temperature heat-conducting silicone grease.After the high temperature heat-conducting silicone grease being poured in the cavity 21 of metal shell 2, described metal shell 2 is just flexibly combined with sheet heating element 1, but, if still sheet heat generating member 1 can be pulled out in metal shell 2 with certain pulling force, this state convenient for maintaining, if promptly certain a slice sheet heating element 1 lost efficacy, just can pull out replacing.In order further to improve heat conduction efficiency, on the outer wall of the lateral surface of the metal shell 2,23,24 of described combined electrical heater outermost both sides, be provided with heat-dissipating fin 31,32; And the end face of the heat-dissipating fin 31,32 on the outer wall of the lateral surface of the metal shell 2 of described outermost both sides is provided with stator 41,42, is used to strengthen heat-dissipating fin 3 fastnesses, prevents heat-dissipating fin 3 displacements.Be to adopt vacuum brazing between all heat-dissipating fins in the present embodiment and metal shell 2,23,24 and the stator 41,42, certainly, also can resistant to elevated temperatures heat transfer efficiency high glue is bonding to wait other measure to connect, as long as can satisfy and can securely heat-dissipating fin be connected with stator 41,42 with metal shell 2,23,24, having well again, heat transfer efficiency gets final product.Stator therein; be on stator 41, to be provided with Thermal Cutoffs 5 that is used for overheat protector and the temperature detect switch (TDS) 6 that is used for being connected in the present embodiment with the temperature control circuit (not shown); Thermal Cutoffs and temperature detect switch (TDS) are provided with simultaneously in the present embodiment; in fact, as required Thermal Cutoffs and temperature detect switch (TDS) also can be provided with separately.Described Thermal Cutoffs 5 and temperature detect switch (TDS) 6 are connected with the electrode 11 or the electrode 12 of described sheet heating element 1.
See also Fig. 2, Fig. 2 is the perspective view of second kind of embodiment of the utility model.Embodiment illustrated in fig. 2 and embodiment illustrated in fig. 1 comparing, its general structure is identical, different is the structure difference of described heat-dissipating fin 3 and outermost heat- dissipating fin 31,32, heat-dissipating fin in embodiment illustrated in fig. 1 is a corrugated, and the heat-dissipating fin in embodiment illustrated in fig. 2 is the sheet metal that is arranged in parallel, it is with piecemeal parallel sheet metal, is welded on the mode of vacuum brazing on the outer surface of described metal shell.
See also Fig. 3, Fig. 3 is the perspective view of the third embodiment of the utility model.Embodiment illustrated in fig. 3 and embodiment illustrated in fig. 2 comparing, its appearance of making behind the product is the same, also be that heat-dissipating fin is the sheet metal that is arranged in parallel, different is: embodiment illustrated in fig. 3 is to have perforation 71 sheet metal 7 with multi-disc to be enclosed within on the described metal shell 2 and to constitute, described perforation 71 constitutes tight fit with the outer wall of described metal shell 2,23,24, and it is more convenient that this structure assembles the utility model.
Fig. 4 is that Fig. 1 is to circuit theory schematic diagram embodiment illustrated in fig. 3.Be the heater element 1 of a plurality of parallel connections shown in the figure, connect with Thermal Cutoffs 5 and temperature detect switch (TDS) 6 again.
The utility model also can be designed to another form (not drawing) according to the actual needs in market, be a kind of electric heater (not drawing separately), a slice sheet heating element and a metal shell of comprising electroded body insulation, described sheet heating element is positioned at described metal shell, is filled with heat-conducting glue in the outer wall of described sheet heating element and the gap between the described metal shell inwall.Described heat-conducting glue also can be used the high temperature heat-conducting silicone grease.Be provided with heat-dissipating fin with the outer wall of the two sides of the pairing metal shell of heating face of described sheet heating element.Certainly, also only the outer wall of a side side of metal shell is provided with the structure of heat-dissipating fin, in fact, and its part that is exactly above-mentioned Fig. 1 in embodiment illustrated in fig. 3.The electric heater of this microstructure is very suitable for using in the hair dryer, and is similar on the small-power heater members of hair dryer and uses.
It is 200420095674.6 that sheet heating element 1 in the various embodiments described above can adopt the patent No., the utility model name is called the quick heating element of environmental protection and energy saving that working face directly is covered with resistive film, brilliant porcelain thick film electric heating substrate or ceramic thick film electric heating substrate that disclosed technology is made.
Claims (10)
1, a kind of electric heater, it is characterized in that: the sheet heating element and the metal shell that comprise electroded body insulation, described sheet heating element is positioned at the cavity of described metal shell, is provided with heat-dissipating fin with the outer wall of at least one side of the pairing metal shell of heating face of described sheet heating element.
2, electric heater according to claim 1 is characterized in that: be filled with heat-conducting glue in the gap between the cavity inner wall of the outer wall of described sheet heating element and described metal shell.
3, electric heater according to claim 2 is characterized in that: described heat-conducting glue is the high temperature heat-conducting silicone grease.
4, a kind of combined electrical heater, it is characterized in that: the sheet heating element and the metal shell that comprise electroded body insulation more than two or two, in the cavity of each metal shell, be provided with a slice sheet heating element at least, a described metal shell determining deviation at interval is arranged in parallel, make the air duct of air thereby be defined for, in described air duct, be provided with the heat-dissipating fin of fixedlying connected with the opposite face outer wall of adjacent two metal shells from passing through between adjacent two metal shells.
5, electric heater according to claim 4 is characterized in that: be filled with heat-conducting glue in the gap between the cavity inner wall of the outer wall of described sheet heating element and described metal shell.
6, electric heater according to claim 5 is characterized in that: described heat-conducting glue is the high temperature heat-conducting silicone grease.
7, according to the described electric heater of any one claim in the claim 4 to 6, it is characterized in that: on the outer wall of the lateral surface of the metal shell of described combined electrical heater outermost both sides, be provided with heat-dissipating fin.
8, electric heater according to claim 7 is characterized in that: the end face of the heat-dissipating fin on the outer wall of the lateral surface of the metal shell of described outermost both sides is provided with stator.
9, electric heater according to claim 8, it is characterized in that: on described stator, be provided with Thermal Cutoffs or temperature detect switch (TDS), perhaps Thermal Cutoffs and temperature detect switch (TDS), described Thermal Cutoffs or/and temperature detect switch (TDS) connect with the electrode of described sheet heating element.
10, electric heater according to claim 9 is characterized in that: described sheet heating element is brilliant porcelain thick film electric heating substrate or ceramic thick film electric heating substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202096314U CN201359325Y (en) | 2008-10-24 | 2008-10-24 | Electric heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202096314U CN201359325Y (en) | 2008-10-24 | 2008-10-24 | Electric heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201359325Y true CN201359325Y (en) | 2009-12-09 |
Family
ID=41425090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202096314U Expired - Fee Related CN201359325Y (en) | 2008-10-24 | 2008-10-24 | Electric heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201359325Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102283166A (en) * | 2011-06-17 | 2011-12-21 | 胡军 | Water purifying fish tank heater |
| CN104949085A (en) * | 2015-06-23 | 2015-09-30 | 嘉兴方晟电子科技有限公司 | Electrical heating defrosting device |
| CN107787055A (en) * | 2016-08-25 | 2018-03-09 | 马勒国际公司 | Electric heater |
| CN108552599A (en) * | 2018-05-08 | 2018-09-21 | 深圳市博迪科技开发有限公司 | A kind of changeable type electronic cigarette baking heat generating component and electronic cigarette |
-
2008
- 2008-10-24 CN CNU2008202096314U patent/CN201359325Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102283166A (en) * | 2011-06-17 | 2011-12-21 | 胡军 | Water purifying fish tank heater |
| CN102283166B (en) * | 2011-06-17 | 2013-03-27 | 胡军 | Water purifying fish tank heater |
| CN104949085A (en) * | 2015-06-23 | 2015-09-30 | 嘉兴方晟电子科技有限公司 | Electrical heating defrosting device |
| CN104949085B (en) * | 2015-06-23 | 2018-05-04 | 嘉兴方晟电子科技有限公司 | A kind of electric heated defrosting device |
| CN107787055A (en) * | 2016-08-25 | 2018-03-09 | 马勒国际公司 | Electric heater |
| CN107787055B (en) * | 2016-08-25 | 2021-12-24 | 马勒国际公司 | Electric heater |
| CN108552599A (en) * | 2018-05-08 | 2018-09-21 | 深圳市博迪科技开发有限公司 | A kind of changeable type electronic cigarette baking heat generating component and electronic cigarette |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Shenzhen Tongde Electric Co. Ltd. Assignor: Shu Dingtao Contract record no.: 2011440020146 Denomination of utility model: Insulating support of electric heater heating coil Granted publication date: 20091209 License type: Exclusive License Record date: 20110428 |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091209 Termination date: 20131024 |