CN2117683U - Electric heater - Google Patents
Electric heater Download PDFInfo
- Publication number
- CN2117683U CN2117683U CN 91225796 CN91225796U CN2117683U CN 2117683 U CN2117683 U CN 2117683U CN 91225796 CN91225796 CN 91225796 CN 91225796 U CN91225796 U CN 91225796U CN 2117683 U CN2117683 U CN 2117683U
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- CN
- China
- Prior art keywords
- ptc element
- electric heating
- electric heater
- fin
- fixed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model discloses an electric heating device, which adopts a PTC element as an electric heating element, and the PTC element is fixed onto radiating fins and is arranged in a flexible carrier. The electric heating device which has the constant temperature heating capacity does not need to be provided with a temperature control device, and the electric heating device is safe. The electric heating device can be manufactured to be an electric heating pad, an electric heating thermal-insulating cover, a liquid heating device, etc.
Description
The utility model relates to a kind of electric heater unit, be a kind of with electric heating element place constitute in the flexible carrier be used for the heating, heat insulation and heating equipment.
Present electric heater unit mainly is as electric heating element with resistance wire, as electric pad, electric mattress, insulation heating collar etc., it is all to be arranged into resistance wire in the flexible body, temperature control is to adopt the hand switch outage, or employing electronic temperature control unit, as adopt bidirectional triode thyristor to make electronic switch, do temperature control sensor with thermistor, the shortcoming of this electric heater unit is that electrical heating elements is a resistance wire, its length is longer, in case and the somewhere whole device that fractures can not work, and needs special attemperating unit, this has not only increased the complexity of structure, and reliability and durability have been reduced, in case attemperating unit is malfunctioning, it is overheated to cause easily, causes unnecessary loss.
The purpose of this utility model provides a kind of electric heater unit, and a kind of safe and reliable constant temperature electric heater unit is provided, and particularly a kind of flexible structure electric heater unit is as electric pad, electrical heat tracing cover, liquid heater etc.
The technical solution of the utility model is to use the PTC element as electrical heating elements, and the PTC element is fixed on the fin, the heater of PTC element and fin composition is inserted and is fixed on constitute this electric heater unit in the flexible carrier.The quantity of PTC element is determined by watt level, parallel connection.The big smallest number of fin is fixed on the quantity of the PTC element on each fin, can determine according to the actual product situation.
Fig. 1 is the utility model structural representation
Fig. 2 is circuit theory diagrams
Further describe the utility model in conjunction with the accompanying drawings.
As electrical heating elements, as fin, what the PTC element was combined closely is fixed on the fin the utility model with sheet metal with the PTC element, and it can adopt various fixed structures.Shown in Figure 1, provide a kind of embodiment, behind welding lead 7 on the electrode of PTC element, the PTC element is bonded on the metal connecting sheet 4 with heat-conductive bonding agent 8, these metal connecting sheet 4 usefulness securing members such as rivet 5 are fixed on the fin 3, and the heater that is made of PTC element 6 fin 3 places in the flexible carrier.Flexible carrier is made of surface layer 1 and soft internal layer 2, with it with aforementioned heater parcel within it, can adopt along the mode of fin edge sewing heater is fixed.Surface layer 1 material can be waterproof as required, or it is non-water-tight, soft layer thickness can be determined according to specific product, as electric pad can select for use various clothes to do surface layer 1 manufacturing, and adopts synthetic cotton or sponge to do internal layer 2, as manufactures and be used to place the electric heater/sheet that uses in the liquid, can select for use rubber/kiss-coating waterproof cloth to do surface layer 1, also can be coated with the insulation enamelled coating, can adopt bondingly or with the bonding mode of adhesive, heater is fixed in the carrier interlayer along the hot pressing of fin edge.
The quantity of the utility model PTC element determines that according to product power employing is connected in power input in parallel and can establishes by piezo-resistance R
1The overvoltage crowbar that constitutes.
The utility model is used the PTC element and is made the resistance wire that electric heating element has changed traditional use, the PTC element belongs to electronic ceramic, it is safe and reliable electric heating element, after its energising, the initial stage resistance is little, the electric current that passes through is bigger, the very fast rising of temperature reaches after the Curie point resistance and increases electric current and reduce, and surface temperature settles out, institute is so that this electric calorifie installation has the heated at constant temperature ability, do not need to be provided with temperature control equipment, can overheatedly not cause damage, safe and reliable, when a certain electric heating element opens circuit, do not influence other electric heating element and continue operate as normal.
Claims (4)
1, a kind of electric heater unit, it is characterized in that with the PTC element PTC element being fixed on the metal fin, the PTC element is inserted and is fixed in the flexible carrier with the heater of metal fin formation constitute as electric heating element, the quantity of PTC element is determined by watt level, is connected in parallel.
2, according to the described electric heater unit of claim 1, it is characterized in that behind the electrode welding upper conductor of PTC element 6, the PTC element being bonded on the brace 4 with heat-conductive bonding agent, brace 4 is connected and fixed with fin 3 usefulness securing members.
According to claim 1,2 described electric heater units, it is characterized in that 3, flexible carrier is made of surface layer 1 and soft internal layer 2, it wraps up the heater that PTC element 6 fin 3 constitute within it, and surface layer 1 can be a waterproof material.
4, according to claim 1,2 described electric heater units, it is characterized in that being provided with by piezo-resistance R at power input
1The overvoltage crowbar that constitutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91225796 CN2117683U (en) | 1991-09-27 | 1991-09-27 | Electric heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91225796 CN2117683U (en) | 1991-09-27 | 1991-09-27 | Electric heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2117683U true CN2117683U (en) | 1992-09-30 |
Family
ID=4932008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91225796 Pending CN2117683U (en) | 1991-09-27 | 1991-09-27 | Electric heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2117683U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016836A (en) * | 2011-09-23 | 2013-04-03 | 沈阳市中色测温仪表材料研究所有限公司 | Special heating device for temperature-controllable valve |
| CN105435965A (en) * | 2015-10-06 | 2016-03-30 | 江苏高易电控科技有限公司 | Electric dedusting dust bucket self-control constant-temperature electric heater and control method thereof |
-
1991
- 1991-09-27 CN CN 91225796 patent/CN2117683U/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016836A (en) * | 2011-09-23 | 2013-04-03 | 沈阳市中色测温仪表材料研究所有限公司 | Special heating device for temperature-controllable valve |
| CN105435965A (en) * | 2015-10-06 | 2016-03-30 | 江苏高易电控科技有限公司 | Electric dedusting dust bucket self-control constant-temperature electric heater and control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Liu Yusheng Document name: Letter of authorization |
|
| AD01 | Patent right deemed abandoned |