CN2904877Y

CN2904877Y - An electric cooker

Info

Publication number: CN2904877Y
Application number: CN 200620058635
Authority: CN
Inventors: 杨志桥
Original assignee: TIANJI ELECTRIC APPHIANCE CO Ltd GUANGDONG
Current assignee: Guangdong Tonze Electric Co Ltd
Priority date: 2006-04-27
Filing date: 2006-04-27
Publication date: 2007-05-30
Anticipated expiration: 2016-04-27

Abstract

An electric cooker, comprises a pot shell, an inner container and a heating unit, is characterized in that the upper end face of the pot shell is provided with at least three boss along the circumference; flanges are extended outward from the top end of the inner container; the boss on the pot shell mates with the flange on the inner container and forms a clearance between the pot shell and the inner container. By adopting the structure, since that the boss on the pot shell mates with the flange on the inner container and forms a clearance between the pot shell and the inner container, thus the inner container can contact with the heating unit, the heat transfer between the inner container and the heating unit is conducted using heat conduction which effectively utilizes the heat energy of the heating unit; meanwhile, the hot air inside the pot shell communicates with ambient cold air through the clearance between the pot shell and the inner container which effectively avoid the bursting of the ceramic inner container owing to super high temperature inside the pot shell, ensures the safe usage of the electric cooker, and lengthens the service life of the electric cooker.

Description

A kind of electric food warmer

Technical field

The utility model relates to a kind of electric food warmer, more particularly, relates to a kind of safe in utilization, electric food warmer that the thermal efficiency is high.

Background technology

Existing electric food warmer generally comprises shell body, pottery or red-clay inner and pot cover, is provided with heater in the shell body, and heater has following dual mode usually to the heating of inner bag: the first, and heater is to the bottom heating of inner bag; The second, heater is to the bottom and the periphery heating of inner bag.In the heating process of heater to inner bag, must guarantee the circulation of interior hot-air of shell body and cool ambient air, not so, when the temperature in the shell body was too high, the explosion phenomenon appearred in pottery or red-clay inner easily.

In order to guarantee the safe handling of electric food warmer, normally on the shell body, offer through hole, so not only influence attractive in appearancely, and radiating effect neither be very desirable.

Afterwards, a kind of electric food warmer occurred, the bottom of its inner bag has been provided with the boss of buffer action, makes between heater and the inner bag to have certain clearance, for example " the multipurpose health care pot " of Chinese patent CN2442612Y bulletin comprises shell body, electric heat-generating disc and porcelain courage; It is characterized in that: it also comprises the heat insulation inner bag that plays insulation and heat-blocking action that is located in the shell body, and electric heat-generating disc is fixed on the bottom of heat insulation inner bag; It comprises that also one can be placed on the metal heat-conducting pot that also directly places in the heat insulation inner bag on the heat-generating disc, and gapped between metal heat-conducting pot wall and the heat insulation wall of inner container, their top is also gapped; The porcelain courage places in the metal heat-conducting pot, and is gapped between porcelain courage and the metal heat-conducting pot, and porcelain courage bottom has been provided with the boss of buffer action, but their top contacts.Though this electric food warmer is safe in utilization, can prevent the ceramic liner explosion,, the inner bag of this electric food warmer and the heat transmission between the heater are finished by radiation, so this electric food warmer thermal efficiency is not high, and power consumption is big, causes the waste of resource.

Summary of the invention

The purpose of this utility model is existing electric food warmer is improved, thereby a kind of safe in utilization, electric food warmer that the thermal efficiency is high is provided.

In order to achieve the above object, the technical solution adopted in the utility model is as follows:

A kind of electric food warmer, comprise shell body, inner bag and heater, it is characterized in that: along the circumferential direction be provided with at least three boss on the upper surface of above-mentioned shell body, the top of above-mentioned inner bag is outward extended with flange, shell body convex platform cooperates with the inner bag upper flange, forms the gap between shell body and inner bag.

When the bottom of the bottom of inner bag or inner bag and periphery contact with the heater of electric food warmer, because shell body convex platform cooperates with the inner bag upper flange, between shell body and inner bag, form the gap, heat transmission between inner bag and the heater is undertaken by conduction pattern, thereby has effectively utilized the heat energy of heater; Simultaneously, hot-air in the shell body is by gap between shell body and the inner bag and extraneous cold air circulation, prevented from effectively to have guaranteed the safe handling of electric food warmer, also prolonged the service life of electric food warmer because of the too high generation that causes the ceramic liner explosion of temperature in the shell body.

The height of described boss is 3～8mm preferably, when being positioned on the body boss of shell with the flange that guarantees inner bag, the gap that has 3～8mm between flange and the shell body upper surface had so both helped the heat radiation of hot-air in the shell body, can farthest improve the thermal efficiency of heater again.

When making inner bag put into the shell body, inner bag stressed more even, described boss preferably is uniformly distributed on the upper surface of shell body.

In the setting of boss, be provided with bracing ring between described shell body and the boss for convenience, the upper surface of this bracing ring and shell body is complementary.

Adopt after this structure, because cooperating of the flange on the boss on the shell body and the inner bag, between shell body and inner bag, form the gap, inner bag can contact with heater, heat transmission between inner bag and the heater is undertaken by conduction pattern, thereby has effectively utilized the heat energy of heater; Simultaneously, hot-air in the shell body is communicated with the cold air in the external world with gap between the inner bag by the shell body, prevented from effectively to have guaranteed the safe handling of electric food warmer, also prolonged the service life of electric food warmer because of the too high generation that causes the ceramic liner explosion of temperature in the shell body.

Below in conjunction with the drawings and specific embodiments the utility model is described further.

Description of drawings

Fig. 1 is the cutaway view of the utility model preferred embodiment;

Fig. 2 is the structural representation under the shell body good working condition among Fig. 1;

Fig. 3 is another structural representation of shell body in the utility model preferred embodiment.

The specific embodiment

As shown in Figure 1 and Figure 2, a kind of electric food warmer, comprise shell body 1, inner bag 2, pot cover 3 and heater, the upper surface of shell body 1 is provided with bracing ring 4, this bracing ring 4 is complementary with the upper surface of shell body 1, along the circumferential direction be provided with four boss 5 on the bracing ring 4 equably, the number of boss 5 also can be three, as shown in Figure 3.

The top of above-mentioned inner bag 2 is outward extended with flange 6, and shell body 1 convex platform 5 cooperates with inner bag 2 upper flanges 6, forms gap 7 between shell body 1 and inner bag 2.

When the bottom of the bottom of inner bag 2 or inner bag 2 and periphery contact with the heater of electric food warmer, because cooperating of the flange 6 on the boss 5 on the shell body 1 and the inner bag 2, between shell body 1 and inner bag 2, form gap 7, heat transmission between inner bag 2 and the heater is undertaken by conduction pattern, thereby has effectively utilized the heat energy of heater; Simultaneously, hot-air in the shell body 1 is by gap between shell body 1 and the inner bag 27 and extraneous cold air circulation, prevented effectively because of the too high generation that causes ceramic liner 2 explosion phenomenons of temperature in the shell body 1, guarantee the safe handling of electric food warmer, also prolonged the service life of electric food warmer.

As shown in Figure 1, the height of above-mentioned boss 5 is 3～8mm preferably, when being positioned on the boss 5 of shell body 1 with the flange 6 that guarantees inner bag 2, have between flange 6 and the bracing ring 4 gap 7 of 3～8mm ', so both help the heat radiation of hot-air in the shell body 1, and can farthest improve the thermal efficiency of heater again.

Claims

1, a kind of electric food warmer, comprise shell body, inner bag and heater, it is characterized in that: along the circumferential direction be provided with at least three boss on the upper surface of above-mentioned shell body, the top of above-mentioned inner bag is outward extended with flange, shell body convex platform cooperates with the inner bag upper flange, forms the gap between shell body and inner bag.

2, electric food warmer as claimed in claim 1 is characterized in that: the height of described boss is 3～8mm.

3, electric food warmer as claimed in claim 1 or 2 is characterized in that: described boss is uniformly distributed on the upper surface of shell body.

4, electric food warmer as claimed in claim 3 is characterized in that: be provided with bracing ring between described shell body and the boss, the upper surface of this bracing ring and shell body is complementary.