CN2177421Y

CN2177421Y - Electric rice pot heated by electrothermic film

Info

Publication number: CN2177421Y
Application number: CN 93212843
Authority: CN
Inventors: 叶小舟; 林卫文; 邝锡渭; 武炜
Original assignee: ZHONGSHAN CITY WEILI GROUP INDUSTRY Co
Current assignee: ZHONGSHAN CITY WEILI GROUP INDUSTRY Co
Priority date: 1993-05-13
Filing date: 1993-05-13
Publication date: 1994-09-21
Anticipated expiration: 2003-05-13

Abstract

The utility model relates to an electric rice pot heated by electrothermal film, comprising a pot lid, an inner container, an outer casing, an inner casing, a temperature control element, an electrothermal element, a control circuit and a control switch. The utility model is characterized in that the electrothermal element adopts electrothermal films which is coated on the outer surface of the inner container; the outer of the inner container is also sheathed with an inner container protecting cover; the inner container and the inner container protecting cover are coupled at a flanging part to form a composite inner container; the protecting cover can be respectively provided with wiring terminals to be coupled with the positive and negative electrodes of the electrothermal film and the temperature control element; the inner casing is correspondingly provided with a control circuit socket to be matched with wiring terminals. The utility model has the advantages of high thermal efficiency, electricity saving, low cost, heat insulation without heating, simplified processing technic of the electric rice pot and high rate of finished products.

Description

Electric rice pot heated by electrothermic film

The utility model relates to a kind of electric cooker, particularly relates to a kind of electric cooker that adopts the Electric radiant Heating Film heating, and it has thermal efficiency height, economizes on electricity and exempt from characteristics such as heat tracing.

In the prior art, electric cooker all is made up of pot cover, inner bag, shell, inner housing, temp-controlling element, tubular heater, heating board, control circuit and switch.Wherein, heating board adopts cast aluminium to make, and its inside has been cast into tubular heater, and after the energising, heater evenly generates heat electric hot plate, contacts water and the rice of heat energy being passed to splendid attire in the inner bag closely by electric hot plate and inner bag bottom again.Its weak point is to adopt not only cost height of this electric hot plate and tubular heater, complex manufacturing technology, life-span is shorter, and heating board needs fully to contact with inner bag, and heat conduction effectively fits like a glove but prior art is difficult to guarantee heating board and inner bag, so its thermal efficiency is low, be lower than 60%, and need heat tracing, comparatively power consumption.

The purpose of this utility model is exactly in order to overcome weak point of the prior art, and a kind of traditional heating system and structure sublated is provided, and improves the thermal efficiency, conservation of power, the electric cooker of the employing Electric radiant Heating Film that reduces cost again simultaneously heating.

The purpose of this utility model can realize by following technical measures: it is by pot cover, inner bag, shell, inner housing, temp-controlling element, heating, control circuit and switch are formed, it is characterized in that changing heating board of the prior art and Tubiform Heater and be heated to be the Electric radiant Heating Film heating, be that heating is an Electric radiant Heating Film, inner bag also is with an inner bag guard shield outward, the inner bag guard shield is similar to the inner bag shape and greater than the housing of inner bag, it is nested with inner bag and inlays at its flange place and connects, constitute composite inner liner, some binding posts also are installed on the inner bag guard shield, two binding posts and Electric radiant Heating Film wherein must be arranged just, negative the two poles of the earth link, other has the temp-controlling element on two binding posts and the inner bladder outer wall to link, and with the corresponding position of inner bag guard shield binding post the control circuit socket is housed in inner housing.When composite inner liner was put into shell, the plug on the inner bag guard shield can insert in the interior socket of inner housing, and Electric radiant Heating Film and control circuit are connected; After taking out composite inner liner, binding post and socket break away from.

Leave the space between inner bag of the present utility model and the inner bag guard shield, form cavity.

The purpose of this utility model can also realize by following technical measures: leave the sealing gas port on the inner bag guard shield, sealed attachment is done in inner bag guard shield and inner bag flange connection place, space between inner bag and guard shield is vacuumized, make the cavity of the two become vacuum cavity, can make composite inner liner form heat-insulation layer preferably like this, play the heat tracing effect of exempting from, can also prevent Electric radiant Heating Film coating and air catalytic oxidation simultaneously, prolong the service life of Electric radiant Heating Film.

Electric radiant Heating Film of the present utility model can be coated on the inner bag outer bottom, or is coated on the whole outer wall of inner bag, perhaps is coated in inner bag outer bottom and its peripheral lower middle portion.

The utility model can also adopt self-closing electrical socket as the control circuit socket in the inner housing, and after taking out composite inner liner, the socket baffle plate is self-closing, makes socket be unlikely exposed, can prevent accidental shock.

The utility model can also add a fine motion safety switch and connect with control circuit under electric cooker lid.After pot cover closed, power supply could be connected, and when pot cover was opened, power supply disconnects, and was safer to guarantee electric cooker.

Inner bag of the present utility model both can adopt metal material, can adopt glass or pottery or enamel material to make again.The inner bag guard shield then can adopt metal material or plastics to make.

The utility model compared with prior art has many advantages:

1. heating has adopted Electric radiant Heating Film, Electric radiant Heating Film is planar exothermic material, form thermal conductive surface to greatest extent with heated object, the thermal resistance of heat transfer is little, and heat conductivity is good, and self-temperature is very not high, do not have rubescent, red-hot phenomenon, it is little that the width of cloth is penetrated heat loss, the electric heater made from Electric radiant Heating Film, the thermal efficiency is very high, generally about 90%.And traditional electrothermal tube radiating surface is little, will lean on other object to conduct indirectly with heated object, in the electric heating transfer process, the heat energy that electric energy produced can not be passed to heated object soon, cause the heat on the heating too concentrated, it is red-hot itself to become very soon, and energy loss is bigger, causes electric conversion efficiency low, by contrast, Electric radiant Heating Film work contact-making surface is big, and heat conduction is fast, than prior art economize on electricity 10%～40%.

2. Electric radiant Heating Film has auto-temperature-limiting character, and temperature rise own is not high, guarantees that Electric radiant Heating Film temperature everywhere is even, and composite inner liner can prevent Electric radiant Heating Film coating and outside air catalytic oxidation simultaneously, has prolonged service life.

3. adopt the two-layer compound inner-tube structure, can avoid when taking out the inner bag cleaning, drawing the flower Electric radiant Heating Film easily, can also play electrostatic sheild simultaneously and close effect, prevent the heating element heater leakage current, because Electric radiant Heating Film is easy and metal shell forms capacitor, leakage current influences complete machine safety.

4. composite inner liner has the double thermal insulation effect, prevents cross-ventilation, can play the heat tracing effect of exempting from, and does application of vacuum as the cavity in the composite inner liner, and heat insulating effect is better.

5. the technology that adopts Electric radiant Heating Film to make heating wants much simple than prior art, and traditional tubular electrothermal element will be through tens road processing technologys, and Electric radiant Heating Film only need be coated in the inner bag outer surface and gets final product, and simple in structure, and cost is lower, is about 0.5 yuan/kilowatt.Add the insulation effect of composite inner liner, can economize the insulation material between decapsidate and the inner housing, simplified mounting process and complete machine weight, further saved cost.

Below in conjunction with accompanying drawing the utility model is described in further detail:

Fig. 1 is the main pseudosection of a kind of embodiment of the utility model;

Fig. 2 is circuit theory diagrams of the present utility model;

Fig. 3 is the composite inner liner master pseudosection of a kind of embodiment of the utility model;

Fig. 4 is the composite inner liner master pseudosection of the another kind of embodiment of the utility model.

The electric cooker of Electric radiant Heating Film heating illustrated in figures 1 and 2 is one of embodiment of the present utility model, it is by pot cover 10, inner bag 5, inner bag guard shield 6, shell 8, inner housing 4, temp-controlling element 14, heating 7, control circuit 16 and gauge tap are formed, wherein heating 7 is the Electric radiant Heating Film coating, it is coated in the lower part of the outer surface of inner bag 5, comprise the bottom surface, inner bag 5 is enclosed within again in the inner bag guard shield 6, leave certain space between the two, guard shield 6 compresses the tight formation of flange pincers composite inner liner with inner bag 5 with sealing ring 9, have four holes on the bottom surface of inner bag guard shield, be separately installed with four wiring cylinders 15, wherein two binding posts are connected with temp-controlling element 14 thermistors that are attached to the inner bag bottom, in addition two binding posts then with Electric radiant Heating Film just, negative the two poles of the earth link to each other, be connected on electric cooker inner housing bottom surface be equipped with one with the corresponding self stick circuit's socket of composite inner liner binding post, four lines in the circuit socket connect the control circuit 16 that the computer control panel is made respectively, can be by the temperature of computer control heating and the time of heating.The one fine motion safety switching mechanism of being made up of gland 1, compressing tablet 2 and safety switch 3 is installed in pot cover 10, when putting down pot cover 10, compressing tablet 2 can be moved to the left, again through spring Hui Li, homing is blocked the positioning boss 8a on the shell, and pot cover is locked, and just depress safety switch 3 on the other hand, make electric cooker energy operate as normal.When opening pot cover, compressing tablet 2 safety switch that slips away disconnects safety switch, and electric cooker quits work, can avoid like this uncapping stretch out one's hand in the time may form capacitor and produce slight electric shock and numb hand phenomenon, improve security performance.In addition, the seal cover 11 that just is pressed on inner bag 5 end faces is housed also in the pot cover, the steam in the inner bag 5 can be pooled in the water collector 13 through seal cover 11.In inner housing, also be provided with locating hole, on the guard shield of composite inner liner, also be provided with locating piece accordingly so that composite inner liner when installing and the active socket in the inner housing align.When composite inner liner 5 is put into inner housing, aim at locating hole, then can utilize own wt to depress, under the effect of binding post, since the guide effect of the socket baffle plate loxosis on the inner housing, baffle plate compression spring, the socket through hole is opened, binding post inserts in the socket, and inner bag 5 and control circuit 16 are connected, by the work of control circuit control electric cooker.

Another embodiment (see figure 3) of the present utility model is to apply one deck Electric radiant Heating Film 7 in the inner bag bottom surface, stay in the guard shield bottom again and vacuumize sealing gas port 17, composite inner liner is done application of vacuum, make the insulated space that forms a sealing between inner bag 5 and the inner bag guard shield 6, play insulation, heat-blocking action.Inner bag 5 and inner bag guard shield all adopt aluminum material to make.

Another embodiment (see figure 4) of the present utility model is to apply one deck Electric radiant Heating Film 7 on the major part of the outer surface of inner bag 5, forms a big heating surface, to improve the thermal efficiency.The inner bag guard shield adopts plastic material, and inner bag 5 adopts ceramic material to make.

Claims

1, a kind of electric cooker of Electric radiant Heating Film heating, it is by pot cover (10), inner bag (5), shell (8), inner housing (4), temp-controlling element (14), control circuit (16) and gauge tap are formed, it is characterized in that heating adopts Electric radiant Heating Film (7), it is coated on the case surface of inner bag (5), and inner bag also is with an inner bag guard shield (6) outward, it is nested with inner bag and is incorporated in inner bag flange place and inlays and connect, constitute composite inner liner, on inner bag guard shield (6), several binding posts are installed also, two binding posts and Electric radiant Heating Film (7) wherein must be arranged just, negative the two poles of the earth link, also have the temp-controlling element on two binding posts and the inner bladder outer wall to link, the control circuit socket correspondingly is housed on inner housing, matches with binding post on the inner bag guard shield (6).

2, the electric cooker of Electric radiant Heating Film heating according to claim 1 is characterized in that leaving the space between inner bag (5) and the inner bag guard shield (6), forms cavity.

3, the electric cooker of Electric radiant Heating Film heating according to claim 1 and 2, it is characterized in that on inner bag guard shield (6), leaving the sealing gas port, inner bag guard shield (6) is done sealed attachment with the flange connection place of inner bag (5), and sealed attachment is also done by binding post and inner bag guard shield (6) bearing.By vacuumizing processing, the cavity that constitutes between inner bag guard shield (6) and the inner bag is a vacuum cavity with described composite inner liner.

4, the electric cooker of Electric radiant Heating Film heating according to claim 3 is characterized in that the control circuit socket on the inner housing adopts the self-closing electrical socket.

5,, it is characterized in that inner bag (5) and inner bag guard shield (6) compress flange with sealing ring and clamp together and form composite inner liner according to the electric cooker of claim 1 or the heating of 2 or 4 described Electric radiant Heating Film.

6, the electric cooker of Electric radiant Heating Film heating according to claim 5 is characterized in that inner bag guard shield (6) adopts aluminum material.

7, the electric cooker of Electric radiant Heating Film heating according to claim 5 is characterized in that inner bag guard shield (6) adopts heat resistant plastic material.

8, according to the electric cooker of claim 6 or 7 described Electric radiant Heating Film heating, it is characterized in that adding a microswitch and connect with control circuit in the pot cover of electric cooker, this microswitch is made up of gland (1), compressing tablet (2) and safety switch.

9, the electric cooker of Electric radiant Heating Film heating according to claim 8 is characterized in that Electric radiant Heating Film (7) is coated on the outer bottom surface of inner bag.

10, the electric cooker of Electric radiant Heating Film heating according to claim 8 is characterized in that Electric radiant Heating Film (7) is coated in the outer surface and zone, middle and lower part of inner bag (5).