CN2049057U - Electroheat apparatus with drum shape electroheat film - Google Patents
Electroheat apparatus with drum shape electroheat film Download PDFInfo
- Publication number
- CN2049057U CN2049057U CN 89203808 CN89203808U CN2049057U CN 2049057 U CN2049057 U CN 2049057U CN 89203808 CN89203808 CN 89203808 CN 89203808 U CN89203808 U CN 89203808U CN 2049057 U CN2049057 U CN 2049057U
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- film
- cydariform
- temperature
- heating
- electrothermal
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Abstract
The utility model relates to an electrothermal apparatus with a drum-shaped electrothermal film type, which relates to the improvement of the structure of a heating element and a thermostat of an electrothermal apparatus. The utility model adopts an electrothermal film type heating element of which the plane geometry shape forms a drum shape for the electrothermal apparatus, and the shape of the bottom surface of a heating container of the electrothermal apparatus is circular. Therefore, the thermal fields of the heating element and the heating container are uniform. At the same time, the utility model provides a technical proposal which can carry out multipoint sensing temperature sampling to control temperature and carry out overtemperature protection, which causes the large areas of the electrothermal apparatus with an electrothermal film type, particularly an electrothermal cooking utensil, to heat and to be heated uniformly. The operating lifespan and the cooking quality of the product can be improved.
Description
The utility model belongs to the electrothermal membrane type electric heating appliance, relates to the improvement of heater and thermostat structure.
With Electric radiant Heating Film (as described paint-type electric heating film of CN86100500 or the described binding type electrically hotting mask of CN89100683) is the electric heating appliance of heater, cooking apparatus particularly, obtain extensive use because of its heat efficiency is high, in order to reduce the power density of Electric radiant Heating Film, adopt large-area electrothermal film heater usually.But because of Electric radiant Heating Film self temperature rise speed fast, easily overheated and burn, this is particularly outstanding to large-area electrothermal film heater, in the general closed planar geometry is in the Electric radiant Heating Film of rectangle, Electric radiant Heating Film current strength everywhere is even, but the center radiating condition is poorer than the marginal zone, thereby cause the heating container bottom centre position temperature of heater middle part and electric heating appliance too high easily, cause local overheating, influence the working life of Electric radiant Heating Film.Also because the heating container temperature distributing disproportionation is even, the quality of (as cooking) is cooked in influence simultaneously.Thereby the thermal field of electrothermal film heater is evenly distributed; and then make the heating container bottom surface uniformity of temperature profile of electric heating appliance; and provide overtemperature protection in time reliably to Electric radiant Heating Film, to the quality that guarantees electric heating appliance, to improve its working life be very important.
The utility model provides a kind of its electrothermal membrane type heating physical efficiency to form uniform thermal field for above-mentioned purpose and the electric heating appliance of reliable temperature control and overtemperature protection is arranged.
The utility model comprises parts such as heating container, electric heating thermostat and shell, and the bottom surface of its heating container is circle or sub-circular.The technical scheme that realizes goal of the invention comprises: lay the electrothermal membrane type heater that geometrical plane is shaped as cydariform on the heating container bottom surface.This cydariform Electric radiant Heating Film comprises near two sections arc limits of heating container bottom periphery or arc broken line limit and two parallel or substantially parallel straight line sides.Whole cydariform becomes the center symmetry; and lay arc-shaped electrode along the two sections arc limits or the arc broken line limit of this cydariform Electric radiant Heating Film, the cydariform Electric radiant Heating Film be provided with one or more temperature sensor carry out single-point or the sampling overtemperature protection of multiple spot temperature-sensitive or (with) temperature control.
Two sections arc limits of said cydariform Electric radiant Heating Film generally are two sections circular arcs or the approximate circular arc or the circular arc broken lines of or essentially concentric concentric with the heating container bottom periphery.
The cydariform electrothermal membrane type heater of laying on the heating container, the ratio of maximum spacing and the film between its two arc-shaped electrode wide (being the spacing between the dual-side) can be 1.2～1.4.
Said cydariform Electric radiant Heating Film can be made of a monoblock film, also can be formed in parallel by some films, under the situation that the polylith film is formed in parallel, a little gap is arranged between film and the film, but all the integral planar geometry of film composition still is a cydariform.
The cydariform Electric radiant Heating Film that is laid on the heating container bottom surface can adopt the binding type electrically hotting mask, also can adopt coating slug type Electric radiant Heating Film, and Electric radiant Heating Film is combined into one by the method and the heating container of adhering and solidifying or sintering.
The utility model rise temperature control or (with) temperature sensor of superheat protecting function can adopt PTC positive temperature coefficient temperature-sensitive element or (with) temperature-sensitive element or temperature-sensing element in the temperature control switch, said temperature control switch can be bimetal leaf temperature control switch or thermal relay or ferromagnet formula temperature control switch or infrared ray temperature-sensitive thermostat.
PTC positive temperature coefficient temperature-sensitive element or (with) the temperature control switch can be serially connected in the main circuit power supply of electric heating thermostat.When adopting the silicon-controlled voltage regulation temperature-adjusting circuit, PTC positive temperature coefficient temperature-sensitive element or (with) the temperature control switch also can be connected in the silicon controlled circuits for triggering.
The metal that the material of heating container of the present utility model can adopt enamel, pottery, heatproof glass or bottom to handle through insulation.
The utility model is owing to adopt cydariform electrothermal membrane type heater, the arc-shaped electrode at Electric radiant Heating Film two ends makes Electric radiant Heating Film shorten gradually Zi middle interelectrode distance to two edges, power density then is to increase gradually to two edges Zi middle in the Electric radiant Heating Film, causes that with the marginal zone center temperature is higher than the even phenomenon of temperature distributing disproportionation of marginal zone thereby remedied the center because of heat radiation is different with heat conduction condition.The temperature difference of general cydariform Electric radiant Heating Film marginal zone and center can be less than 10 ℃, overcomes the problem that the Electric radiant Heating Film local overheating is easy to burn with regard to favourable, also can improve the culinary art effect of culinary art electric heating appliance greatly.Simultaneously,, strengthened the security insurance coefficient of this electric heating appliance greatly, is greatly improved its useful life owing to adopt control of multiple spot temperature-sensitive probe temperature and overtemperature protection.
Describe in detail below in conjunction with the details of accompanying drawing embodiment of the present utility model.
Fig. 1 is the structure diagram of cydariform electrothermal membrane type electric rice cooker;
Fig. 2 is the plane geometric shape schematic diagram of the cydariform Electric radiant Heating Film of this electric rice cooker;
Fig. 3 is the electric heating thermostat circuit diagram of this electric rice cooker;
Fig. 4 is the plane geometric shape schematic diagram by the cydariform Electric radiant Heating Film of polylith Electric radiant Heating Film parallel connection.
This electric rice cooker has pot cover (1), pot body (2) (pot cover and pot body constitute heating container), the matter material of pot cover and pot body is sugared porcelain, the bottom of pot body is laid insulating barrier (3) earlier, on insulating barrier, lay cydariform Electric radiant Heating Film (4 again, R) (plane geometric shape such as Fig. 2), the cydariform Electric radiant Heating Film comprises and peripheral concentric two sections circular arc limits (5) of bottom of pot body and the two straight line sides (6) that are parallel to each other, arc-shaped electrode (7) is laid on two sections circular arc limits along the cydariform Electric radiant Heating Film, and the ratio between maximum spacing between two arc-shaped electrodes and film are wide is: 1.33.Insulating barrier (3), Electric radiant Heating Film (4, R) and electrode (7) directly adhering and solidifying become an integral body (can adopt adhesion type insulating barrier and binding type electrically hotting mask) in pot body bottom surface.The electric heating thermostat of this electric rice cooker adopts the bidirectional thyristor for regulating voltage circuit, has bidirectional triode thyristor 3CTS, and the circuits for triggering of 3CTS adopt the bidirectional diode circuits for triggering, comprise bidirectional diode 2CTS, resistance R
3, strip resistance divides the variable resistor R of position switch
2And capacitor C.Strip resistance is divided the variable resistor R of position switch
2Regulate by the manual power governor (10) that is contained on the base (9).Play the PTC positive temperature coefficient temperature-sensitive element R of temperature control and superheat protecting function
1With four bimetal leaf temperature control switch (T that play superheat protecting function
1～T
4) be serially connected on the bidirectional diode circuits for triggering PTC positive temperature coefficient temperature-sensitive element R
1Support on five heating positions that are evenly distributed on the cydariform Electric radiant Heating Film (wherein across insulating barrier (8)) by spring (11) with the temperature-sensing element of four bimetal leaf temperature control switches.During work, bimetal leaf temperature control switch closure is by R
1, R
2, R
3Form the RC loop with C, make 2CTS produce trigger impulse, the conducting under certain angle of flow of control bidirectional triode thyristor, make cydariform electrothermal membrane type heater (4, R) obtain heating power, when reaching cooking temp, the resistance value of PTC positive temperature coefficient temperature-sensitive element will sharply rise, and make the bidirectional triode thyristor angle of flow turn down or turn-off, and make the temperature of electric rice cooker obtain regulation and control.When the work of electric rice cooker heater undesired; when the overheated temperature-sensing element by PTC temperature-sensitive element or certain bimetal leaf temperature control switch in certain heater position senses; 3CTS is turn-offed; circuit is stopped the heater power output, thereby heater is protected.
Fig. 4 is the another kind of cydariform electrothermal membrane type heater form of being made up of 4 parallel Electric radiant Heating Film, 4 each pieces of Electric radiant Heating Film are independent, but overall geometry still is a cydariform, in the major loop of each piece Electric radiant Heating Film access electric heating in parallel mutually thermostat.
Claims (7)
1; a kind of electric heating appliance; electric heating cooking utensil particularly; comprise that its bottom surface is the heating container of circle or sub-circular; the electric heating thermostat; shell etc.; the bottom surface that it is characterized in that heating container is laid with the electrothermal membrane type electric heating body that plane geometric shape is a cydariform; this cydariform comprises near two sections arc limits of heating container bottom periphery or arc broken line limit and two parallel or substantially parallel straight line sides; whole cydariform becomes the center symmetry; and lay arc-shaped electrode along the two sections arc limits or the arc broken line limit of this cydariform Electric radiant Heating Film, the cydariform Electric radiant Heating Film be provided with more than one temperature sensor carry out single-point or the sampling overtemperature protection of multiple spot temperature-sensitive or (with) temperature control.
2, by the described electric heating appliance of claim 1, two sections arc limits that it is characterized in that said cydariform Electric radiant Heating Film are two sections circular arcs or approximate circular arc or circular arc broken lines of or essentially concentric concentric with the heating container bottom periphery.
3,, it is characterized in that the maximum spacing between two arc-shaped electrodes of said cydariform electrothermal membrane type heater and the ratio of film wide (spacing between the dual-side) are 1.2～1.4 by claim 1 or 2 described electric heating appliances.
4, by the described electric heating appliance of claim 1, it is characterized in that said cydariform Electric radiant Heating Film can be made of a monoblock film, also can be formed in parallel by the polylith film.
5, by the described electric heating appliance of claim 1, it is characterized in that said temperature sensor can be PTC positive temperature coefficient temperature-sensitive element or (with) temperature-sensitive element or temperature-sensing element in the temperature control switch, said temperature control switch can be bimetal leaf temperature control switch or thermal relay or ferrite formula temperature control switch or infrared ray temperature-sensitive thermostat.
6, by the described electric heating appliance of claim 1, it is characterized in that said Electric radiant Heating Film electric heating body can adopt the binding type electrically hotting mask, also can adopt coating slug type Electric radiant Heating Film.
7, by the described electric heating appliance of claim 1, the material that it is characterized in that said heating container can be the metal that handle through insulation enamel, pottery, heatproof glass or bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89203808 CN2049057U (en) | 1989-03-29 | 1989-03-29 | Electroheat apparatus with drum shape electroheat film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89203808 CN2049057U (en) | 1989-03-29 | 1989-03-29 | Electroheat apparatus with drum shape electroheat film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2049057U true CN2049057U (en) | 1989-12-06 |
Family
ID=4861293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89203808 Withdrawn CN2049057U (en) | 1989-03-29 | 1989-03-29 | Electroheat apparatus with drum shape electroheat film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2049057U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102824114A (en) * | 2012-09-16 | 2012-12-19 | 林添耀 | Liquid heater |
| CN107979881A (en) * | 2017-12-19 | 2018-05-01 | 高新材料企业有限公司 | Electric heating substrate element and heating device with same |
-
1989
- 1989-03-29 CN CN 89203808 patent/CN2049057U/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102824114A (en) * | 2012-09-16 | 2012-12-19 | 林添耀 | Liquid heater |
| CN102824114B (en) * | 2012-09-16 | 2015-04-08 | 林添耀 | Liquid heater |
| CN107979881A (en) * | 2017-12-19 | 2018-05-01 | 高新材料企业有限公司 | Electric heating substrate element and heating device with same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CU02 | Correction of gazette and description of patent for utility model |
Correction item: Designer Correct: He Shanwen False: He Xiwen Number: 49 Page: 131 Volume: 5 |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: WANG ZUOGUANG TO: LIAOYUAN MINING BUREAU ELECTRICAL AND MECHANICAL GENERAL PLANT |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |