CN201617649U - Electric rice cooker - Google Patents
Electric rice cooker Download PDFInfo
- Publication number
- CN201617649U CN201617649U CN 201020109823 CN201020109823U CN201617649U CN 201617649 U CN201617649 U CN 201617649U CN 201020109823 CN201020109823 CN 201020109823 CN 201020109823 U CN201020109823 U CN 201020109823U CN 201617649 U CN201617649 U CN 201617649U
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- insulating layer
- heat
- inner insulating
- electric cooker
- inner bag
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Abstract
The utility model relates to an electric rice cooker, which comprises an outer cooker body, an inner container, a heating component, a thermal insulating device, a temperature sensing device and a control circuit board, wherein a cavity between the thermal insulating device and the inner container forms a thermal radiation cavity, the heating component is arranged in the thermal radiation cavity, and a clearance is formed between the heating component and the inner container. The utility model is characterized in that the thermal insulating device comprises an inner thermal insulating layer and an outer thermal insulating layer, the longitudinal sections of both the inner thermal insulating layer and the outer thermal insulating layer take the shape of the letter U, and a first thermal insulating cavity is formed between the inner thermal insulating layer and the outer thermal insulating layer; and the upper edge of the inner thermal insulating layer is in contact fit with the outer surface of the inner container. Through the contact fit of the upper edge of the inner thermal insulating layer and the outer surface of the inner container, the line-surface seal is formed, the inner thermal insulating layer and the outer surface of the inner container are enabled to form the sealed thermal radiation cavity, heat quantity produced by the heating component can be used for uniformly heating the inner container in a thermal radiation manner, the first thermal insulating cavity plays the effect of thermal insulation, and the heat quantity escape can be reduced greatly, thereby achieving favorable thermal insulation effect.
Description
Technical field
The utility model relates to a kind of electric cooker, relates in particular to a kind of electric cooker by the heat radiation heating.
Background technology
Existing electric cooker generally all is to adopt heat-generating disc or heating board to heat, and heat generating components must contact with the pot body, otherwise heat conduction efficiency just reduces.This traditional contact mode of heating can be low because of the pyroconductivity of inner bags such as pottery pot or boccaro pot when inner bags such as heating ceramic pot or boccaro pot, causes the local temperature of inner bag too high, and the temperature difference is big, explosion easily.In addition, because heat-generating disc or heating board are different with the making material of inner bag, distortion in various degree takes place in heat up back heating surface and heating surface, and heating surface can not well contact with heating surface, and heat conduction efficiency reduces.
At present, the electric cooker that some heat by the heat radiation mode appears on the market, heat generating components does not have direct contact heat transfer with the pot body, though the problem of explosion takes place when having solved inner bag such as heating ceramic pot or boccaro pot easily, but ubiquity heat seal and effect of heat insulation are bad, cause heat conduction efficiency to reduce, heat the problem that waits more slowly; On the problem that solves effect of heat insulation, what have then is to adopt heat-preservation cotton next heat insulation, but this provision for thermal insulation, the problem of being brought is an easy breed bacteria under the situation of less use, and in use, be subjected to high temperature can give out some pernicious gases, be difficult to reach environmental requirement.
The utility model content
Problem to be solved in the utility model is, a kind of electric cooker is provided, and this electric cooker heats by the heat radiation mode, has good heat seal and effect of heat insulation, and homogeneous heating is quick, and environmentally-friendly sanitary; The technical scheme that adopts is as follows:
A kind of electric cooker, comprise outer pan body, inner bag, heat generating components, heat-proof device, temperature sensing device and control circuit board, cavity between heat-proof device and the inner bag constitutes heat radiation chamber, heat generating components is arranged in the heat radiation chamber, gapped between heat generating components and the inner bag, it is characterized in that: described heat-proof device comprises inner insulating layer and outer thermal insulation layer, and the longitudinal section of inner insulating layer and outer thermal insulation layer all takes the shape of the letter U, and forms the first heat insulation cavity between inner insulating layer and the outer thermal insulation layer; The top edge of inner insulating layer contacts cooperation with the outer surface of inner bag.
Generally control circuit board is installed in the outer surface of outer pan body; Heat generating components can adopt electrothermal tube, electric furnace heating wire, electric hot plate or other high temperature resistant heater element, and preferred heat generating components is the empty pipe that burns of stainless steel, and it is quick, high temperature resistant that the stainless steel sky burns the pipe heating, and not fragile; Inner insulating layer and outer thermal insulation layer adopt metal material to make usually.
The top edge of inner insulating layer can contact also and can not contact with the top edge of outer thermal insulation layer; When both do not contact, can prevent directly thermal insulation layer outside inner insulating layer is transmitted to of heat, effect of heat insulation is better; But, be generally structure more firm and be convenient to the assembling, both be set to the contact.
Cavity between the outer surface of inner insulating layer and inner bag constitutes heat radiation chamber, and the top edge of inner insulating layer contacts cooperation with the outer surface of inner bag, and heat radiation chamber seals, and prevents that heat from leaking with air, reaches good heat seal effect; Heat generating components is installed in the heat radiation chamber, the heat that heat generating components produces mainly heats inner bag in the heat radiation mode, also be aided with the hot-air conduction in addition, no matter the heat radiation mode of heating still is a hot-air conduction mode of heating, can both evenly heat inner bag; And inner insulating layer and outer thermal insulation layer constitute the first heat insulation cavity, and air is arranged in the first heat insulation cavity, and owing to the pyroconductivity of air is little, thereby the first heat insulation cavity plays good heat-blocking action, weakens leaking of heat greatly, reaches good effect of heat insulation; The temperature sensing device is surveyed the temperature of inner bag, cooperates control circuit board to the heat generating components control of generating heat.
For reaching better effect of heat insulation, as preferred version of the present utility model, described heat-proof device also comprises dividing plate, and dividing plate is installed between inner insulating layer bottom and the inner bag, and the cavity between dividing plate and the inner insulating layer bottom constitutes the second heat insulation cavity.By setting up dividing plate, the outer surface of the sidewall of inner insulating layer, dividing plate and inner bag constitutes heat radiation chamber; And the cavity between dividing plate and the inner insulating layer bottom constitutes the second heat insulation cavity, makes effect of heat insulation better.The cross section of the shape of dividing plate and size and inner insulating layer is complementary, and dividing plate is made by metal material usually, and preferred material is a stainless steel.
For reaching better effect of heat insulation,, between the edge of described dividing plate and the inner insulating layer slit is arranged as the further preferred version of the utility model.Dividing plate can be fixed on the inner insulating layer by screw, between the edge of dividing plate and the inner insulating layer slit is arranged, and parallel with the inner insulating layer bottom, reduces the contact area of dividing plate and inner insulating layer like this, conducts to inner insulating layer from dividing plate thereby reduce heat.
For reaching well-set purpose, as the utility model preferred version further, described electric cooker also comprises metal frame, and metal frame is arranged in the outer pan body, and inner insulating layer and outer thermal insulation layer are installed on the metal frame.By metal frame is set, make structure more firm, also other attachment device can be installed on the metal frame simultaneously, and metal frame is built on stilts with outer thermal insulation layer, outer thermal insulation layer is not directly contacted with outer pan body, play effect of heat insulation to a certain extent, make the outer pan body surface temperature not high.Metal frame can adopt metal materials such as iron, copper, aluminium, stainless steel and alloy to make, and for saving cost, the preferable alloy frame adopts iron to make.
Be to solve the problem of inner bag deviation, as the utility model preferred version further again, described inner insulating layer and outer thermal insulation layer are installed on the metal frame by elastic parts in the bottom.By elastic parts inner insulating layer and outer thermal insulation layer are fixed on the metal frame, inner insulating layer and outer thermal insulation layer can be up and down, and the top edge of inner bag is fixedly to hang on the edge of outer pan body; When the radian of the outer surface of inner bag bottom was bigger than normal, inner bag contacted shallow partially with inner insulating layer, and inner bag amplitude by inner insulating layer elasticity of compression assembly under the gravity effect is little, made inner insulating layer and outer thermal insulation layer integral body decline scope little; When the radian of the outer surface of inner bag bottom was less than normal, inner bag was big by the amplitude of inner insulating layer elasticity of compression assembly, made the whole decline scope of inner insulating layer and outer thermal insulation layer big, thus the matching problem that the deviation of solution inner bag is brought.The preferred elastomeric assembly comprises connecting rod, axle sleeve and spring; Fixedly connected with outer thermal insulation layer and inner insulating layer in the top of connecting rod, the bottom of connecting rod extends to the below of outer thermal insulation layer; Metal frame is provided with guide through hole, and axle sleeve is in the guide through hole; Spring housing is connected on the axle sleeve, and the spring upper end contacts with outer thermal insulation layer, and the spring lower end contacts with metal frame.When inner bag is placed on the inner insulating layer, the compression spring, inner insulating layer, outer thermal insulation layer, connecting rod and axle sleeve are whole movable downwards; When removing inner bag, the spring elongation, inner insulating layer, outer thermal insulation layer, connecting rod and axle sleeve are whole upwards movable.Preferred inner insulating layer and outer thermal insulation layer are fixed on the metal frame by three elastic parts in the bottom, and three elastic parts play better support and positioning action.Above-mentioned elastic parts also can be that axle sleeve is fixed on metal frame below, and connecting rod can be movable in axle sleeve, and spring is arranged on the connecting rod between outer thermal insulation layer and metal frame; Elastic parts can also not comprise axle sleeve.
For reaching comprehensive reflection inner bag temperature inside, accurately control the purpose of heat generating components heating, to the preferred scheme of such scheme, described outer pan body comprises outer pot cover as the utility model, outer pot cover comprises skin and the internal layer that fuses, and the temperature sensing device is arranged on the internal layer.The inner bag temperature raises, and steam sprays from the passage on the inner bag pot cover of inner bag, enters the internal layer of outer pot cover and the interlayer between the inner bag pot cover, and the temperature sensing device is surveyed the temperature of steam.It is interior near on the metal frame of inner bag outer surface that the temperature sensing device also can be contained in outer pan body, but be provided with the temperature of reflection inner bag the inside comprehensive inadequately like this.By the temperature sensing device is arranged on the top, survey the temperature of steam, reflect the temperature of inner bag the inside in time comprehensively, more can accurately control heat generating components, avoid cooking not yet done or overdo problem such as burn.Preferred temperature sensing device is a thermistor, diminishes by thermistor its resistance of being heated, and cooperates control circuit board to control electro-heat equipment, makes temperature control accurate.The temperature sensing device also can adopt the metal heat-conducting plate to cooperate temperature controller to use together, can also adopt other temperature sensor.The internal layer of outer pot cover adopts stainless steel material to make usually.
Prevent that for reaching heat generating components from directly passing to purpose to dividing plate with heat, and the relaxation problem of solution heat generating components in expanding with heat and contract with cold, to the further preferred scheme of such scheme, described heat generating components is fixed on the heat-proof device by metal clip as the utility model.Under the situation that dividing plate is not set, heat generating components is fixed on the inner insulating layer by metal clip, and heat generating components is not directly contacted with inner insulating layer, prevents that heat from directly conducting to inner insulating layer; Be provided with under the situation of dividing plate, heat generating components is fixed to the dividing plate top by metal clip, and heat generating components is not directly contacted with dividing plate, prevents that heat from directly conducting to dividing plate.Simultaneously, heat generating components is the empty pipe that burns of electrothermal tube, electric furnace heating wire, electric hot plate and stainless steel normally, its phenomenon of expanding with heat and contract with cold is quite obvious, and firmly grasp heat generating components by the metal clip the same with the heat generating components coefficient of expansion, be fixed to again on the dividing plate, solved the relaxation problem of heat generating components in expanding with heat and contract with cold.
For reaching more safe and reliable purpose, as the utility model to the further preferred scheme of such scheme, described electric cooker also comprises dry heating temperature controller and fusible link, dry heating temperature controller and fusible link are installed on the metal frame, and be connected with power supply, the fusing-off temperature of fusible link is greater than the set critical-temperature of dry heating temperature controller.The heat that heat generating components sent, some is radiated on the metal frame, and dry heating temperature controller is surveyed the temperature on the metal frame, and when greater than critical-temperature, deenergization stops the heating of heat generating components; When dry heating temperature controller was malfunctioning, the temperature of metal frame can continue to raise, and when temperature was higher than the fusing-off temperature of fusible link, fusible link fusing, and deenergization stopped the heating of heat generating components; By the second class protection of dry heating temperature controller and fusible link, when not having the water dry combustion method in inner bag, in time deenergization has prevented that electrical equipment from damaging and the generation of fire incident, uses more safe and reliable.
For reaching purpose attractive in appearance, to the further preferred again scheme of such scheme, described electric cooker also comprises protection network as the utility model, and protection network is arranged on the top of heat generating components, and is in the below of inner bag.The cross section of the shape of protection network and size and inner insulating layer is complementary, and all has the gap between protection network and heat generating components and the inner bag.Protection network with heat generating components block below, make more attractive in appearancely on the whole, the through hole on the protection network makes protection network not hinder the radiation of heat.
Generally, the edge of inner pot cover is provided with silicone rubber O-ring.When loam cake closed, the silicone rubber O-ring that is provided with on the inner pot cover edge was pressed in the edge, upper edge of inner bag, and inner pot cover, silicone rubber O-ring and inner bag three constitute sealing, prevented that steam from leaking.
The utility model contacts cooperation by the top edge of inner insulating layer with the outer surface of inner bag, constitute line-face sealing, make the outer surface of inner insulating layer and inner bag constitute the heat radiation chamber that seals, prevent that heat from leaking with air, reach good heat seal effect, than left in the past the slit or the sealing of face-face have more the heat seal effect; Heat generating components is installed in the heat radiation chamber, the heat that heat generating components produces mainly heats inner bag in the heat radiation mode, also be aided with the hot-air conduction in addition, no matter the heat radiation mode of heating still is a hot-air conduction mode of heating, can both evenly heat inner bag, solve contact heating, caused the inner bag uneven problem of being heated; And inner insulating layer and outer thermal insulation layer constitute the first heat insulation cavity, and air is arranged in the first heat insulation cavity, because of the pyroconductivity of air is little, play good heat-blocking action, weaken leaking of heat greatly, reach good effect of heat insulation; Heat-proof device is made by metal material, does not have bacteria breed and problem of environmental pollution.
Description of drawings
Accompanying drawing is the profile of electric cooker longitudinal section.
The specific embodiment
Be described further below in conjunction with accompanying drawing and preferred implementation of the present utility model.
As shown in drawings, this electric cooker comprises outer pan body 1, inner bag 2, dry combustion method pipe 3, thermistor 4, control circuit board 5, inner insulating layer 6, outer thermal insulation layer 7, dividing plate 8 and brandreth 9, the longitudinal section of inner insulating layer 6 and outer thermal insulation layer 7 is U-shaped, and dividing plate 8 cooperates with the cross section of inner insulating layer 6; Outer pan body 1 comprises outer pot cover, and outer pot cover comprises skin 101 and the internal layer 102 that fuses.
This electric cooker also comprises dry heating temperature controller 15 and fusible link 16, and dry heating temperature controller 15 and fusible link 16 are installed on the brandreth 9, and are connected with power supply, and the fusing-off temperature of fusible link 16 is greater than the set critical-temperature of dry heating temperature controller 15.
This electric cooker also comprises protection network 17 and silicone rubber O-ring 18; The shape of protection network and size match with the cross section of inner insulating layer 6, and protection network is arranged on the top of stainless steel dry combustion method pipe 3, and below inner bag 2, and all have the gap between dry combustion method pipe 3 and the inner bag 2; Silicone rubber O-ring 18 is arranged on the edge of internal layer 102.
Below in conjunction with accompanying drawing operation principle and each parts role are described further:
The outer surface of the sidewall of inner insulating layer 6, dividing plate 8 and inner bag 2 constitutes heat radiation chamber 20, and the top edge of inner insulating layer 6 contacts cooperation with the outer surface of inner bag 2, and heat radiation chamber 20 seals, and prevents that heat from leaking with air, reaches good heat seal effect; Dry combustion method pipe 3 is fixed on the dividing plate 8 by iron clamp 11, be installed in heat radiation chamber interior 20, the heat that dry combustion method pipe 3 produces mainly heats inner bag 2 in the heat radiation mode, also be aided with the hot-air conduction in addition, no matter the heat radiation mode of heating still is a hot-air conduction mode of heating, can both evenly heat inner bag 2; And inner insulating layer 6 and outer thermal insulation layer 7 constitute first heat-insulation chamber 21, dividing plate 8 and inner insulating layer 6 constitute second heat-insulation chamber 22, in two heat-insulation chambers air is arranged all, because of the pyroconductivity of air little, two heat-insulation chambers play dual heat insulation effect, weaken leaking of heat greatly, reach good effect of heat insulation; The temperature of thermistor 4 perception inner bags 2 the insides cooperates the control of generating heat of 5 pairs of dry combustion method pipes 3 of control circuit board.
After beginning heating, inner bag 2 temperature raise, steam enters interlayer between inner bag pot cover 201 and the internal layer 102 from the passage 202 on the inner bag pot cover 201 of inner bag 2, thermistor 4 its resistance of being heated diminishes, and cooperate control circuit board 5 to control dry combustion method pipe 3, reflect the temperature of inner bag 2 the insides comprehensively in time, make temperature control accurate.
When inner bag 2 is placed on the inner insulating layer 6, compression spring 14, inner insulating layer 6, outer thermal insulation layer 7, connecting rod 12 and axle sleeve 13 are whole movable downwards; When removing inner bag 2, spring 14 elongations, inner insulating layer 6, outer thermal insulation layer 7, connecting rod 12 and axle sleeve 13 are whole upwards movable.
The heat that dry combustion method pipe 3 is sent, some is radiated on the brandreth 9, the temperature that dry heating temperature controller 15 is surveyed on the brandreth 9, when greater than critical-temperature, deenergization stops the heating of stainless steel dry combustion method pipe 3; When dry heating temperature controller 15 was malfunctioning, the temperature of brandreth 9 can continue to raise, and when temperature was higher than the fusing-off temperature of fusible link 16, fusible link 16 fusing, and deenergization stopped the heating of dry combustion method pipe 3; By the second class protection of dry heating temperature controller 15 and fusible link 16, when not having the water dry combustion method in inner bag 2, in time deenergization has prevented that electrical equipment from damaging and the generation of fire incident, uses more safe and reliable.
When loam cake closed, the silicone rubber O-ring 18 that is provided with on internal layer 102 edges was pressed in the edge, upper edge of inner bag 2, and internal layer 102, silicone rubber O-ring 18 and inner bag 2 threes constitute sealing, prevent that steam from leaking.
In the above-mentioned embodiment, the internal layer 102 of preferred inner insulating layer 6, outer thermal insulation layer 7, dividing plate 8 and outer pot cover all adopts stainless steel material to make; In other embodiments, the internal layer 102 of inner insulating layer 6, outer thermal insulation layer 7, dividing plate 8 and outer pot cover can adopt other metal material that is not easy to get rusty to make.
In other embodiments, the material of brandreth 9 is replaceable is copper, aluminium, stainless steel and alloy etc.
Claims (9)
1. electric cooker, comprise outer pan body, inner bag, heat generating components, heat-proof device, temperature sensing device and control circuit board, cavity between heat-proof device and the inner bag constitutes heat radiation chamber, heat generating components is arranged in the heat radiation chamber, gapped between heat generating components and the inner bag, it is characterized in that: described heat-proof device comprises inner insulating layer and outer thermal insulation layer, and the longitudinal section of inner insulating layer and outer thermal insulation layer all takes the shape of the letter U, and forms the first heat insulation cavity between inner insulating layer and the outer thermal insulation layer; The top edge of inner insulating layer contacts cooperation with the outer surface of inner bag.
2. electric cooker as claimed in claim 1, it is characterized in that: described heat-proof device also comprises dividing plate, dividing plate cooperates with the cross section of inner insulating layer, and dividing plate is installed between inner insulating layer bottom and the inner bag, and the cavity between dividing plate and the inner insulating layer bottom constitutes the second heat insulation cavity.
3. electric cooker as claimed in claim 2 is characterized in that: between the edge of described dividing plate and the inner insulating layer slit is arranged.
4. as claim 1 or 2 or 3 described electric cookers, it is characterized in that: described electric cooker also comprises metal frame, and metal frame is arranged in the outer pan body, and inner insulating layer and outer thermal insulation layer are installed on the metal frame.
5. electric cooker as claimed in claim 4 is characterized in that: described inner insulating layer and outer thermal insulation layer are installed on the metal frame by elastic parts in the bottom.
6. electric cooker as claimed in claim 5 is characterized in that: described outer pan body comprises outer pot cover, and outer pot cover comprises skin and the internal layer that fuses, and the temperature sensing device is arranged on the internal layer.
7. electric cooker as claimed in claim 6 is characterized in that: described heat generating components is fixed on the heat-proof device by metal clip.
8. electric cooker as claimed in claim 7, it is characterized in that: described electric cooker also comprises dry heating temperature controller and fusible link, dry heating temperature controller and fusible link are installed on the metal frame, and are connected with power supply, and the fusing-off temperature of fusible link is greater than the set critical-temperature of dry heating temperature controller.
9. electric cooker as claimed in claim 7 is characterized in that: described electric cooker also comprises protection network, and protection network is arranged on the top of heat generating components, and is in the below of inner bag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020109823 CN201617649U (en) | 2010-01-28 | 2010-01-28 | Electric rice cooker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020109823 CN201617649U (en) | 2010-01-28 | 2010-01-28 | Electric rice cooker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201617649U true CN201617649U (en) | 2010-11-03 |
Family
ID=43021101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020109823 Expired - Fee Related CN201617649U (en) | 2010-01-28 | 2010-01-28 | Electric rice cooker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201617649U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107752713A (en) * | 2016-08-17 | 2018-03-06 | 佛山市顺德区美的电热电器制造有限公司 | The control method and system that a kind of electric cooker is cooked |
| CN111938455A (en) * | 2020-07-30 | 2020-11-17 | 汉食智能机器人(苏州)有限公司 | Intelligent cooking control method and device of cooking pot and cooking pot |
-
2010
- 2010-01-28 CN CN 201020109823 patent/CN201617649U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107752713A (en) * | 2016-08-17 | 2018-03-06 | 佛山市顺德区美的电热电器制造有限公司 | The control method and system that a kind of electric cooker is cooked |
| CN111938455A (en) * | 2020-07-30 | 2020-11-17 | 汉食智能机器人(苏州)有限公司 | Intelligent cooking control method and device of cooking pot and cooking pot |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: GUANGDONG TONZE ELECTRIC APPLIANCES CO., LTD. Free format text: FORMER NAME: TIANJI ELECTRIC APPHIANCE CO., LTD., GUANGDONG |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 515021 Guangdong city of Shantou province Chaoshan road Jinyuan Industrial City area 12-12 Patentee after: Guangdong Tonze Electric Co., Ltd. Address before: 515021 Guangdong city of Shantou province Chaoshan road Jinyuan Industrial City area 12-12 Patentee before: Tianji Electric Apphiance Co., Ltd., Guangdong |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101103 Termination date: 20190128 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |