CN102090838A - Composite cooking pot - Google Patents

Abstract

A composite cooking pot, including an inner pot body and an electric heating element, the inner pot body is a container body with a pot wall and a pot bottom, and is characterized in that a shielding protective cover is set outside the inner pot body, and the shielding protective cover is a concave shape The container is sealed and fastened to the inner pot body, and the electric heating element is fixedly placed in the airtight cavity between the inner pot body and the shielding protective cover. The surrounding wall of the pot body shielding protective cover is provided with an electrical connection to realize the electric connection between the electric heating element and the mains power supply The electrical connector is installed on the side upper part of the pot body shielding protective cover. The electric heating element of the composite cooking pot of the present invention is fixedly placed in the airtight cavity between the inner pot body and the shielding protective cover, so the heating efficiency is high, and because the electric heating element and the attached electrical elements are hidden by the shielding protective cover, the electric connector The installation of the upper part of the side eliminates the concerns of users, and it is safer when cleaning the pot. The manufacturing cost is low, and the process is easier to realize. The appearance of the pot is consistent with the existing products, and the appearance of the whole machine is beautiful and generous.

Description

Composite cooking pot

technical field

The invention belongs to the technical field of electric cooking utensils, and in particular relates to a cooking utensil in which a heating plate and an inner pot are fixed together. the

Background technique

The pots in the existing electric cooking utensils are ordinary pots and self-heating pots made of stretched metal materials. The heating of ordinary pots is mainly through the electric heating device (electric heating plate or electric heating plate) arranged at the bottom of the pot. , The pot body transfers heat through contact with the electric heating device. Because the ordinary pot body relies on contact heat transfer, its thermal efficiency is not high, and the electric heating device has the problem of thermal upshoot after power failure, which makes it difficult to achieve precise control and affects the cooking effect. the

The self-heating pot body is a pot with a heat pipe or an electric heating film welded on the bottom of an ordinary pot body. It relies on an electrode switch to realize electrical connection with the bottom to realize self-heating of the pot body, such as the applicant CN101214116 (July 09, 2008 J) A high-efficiency electric heating cooking pot, including an inner pot body, an electric heating element for heating the inner pot, and a temperature control electrical element, the electric heating element is fixed at the bottom of the inner pot body, and the electric heating element and the inner pot The contact surface of the side wall of the body is sealed, and the temperature control electric element is located in the sealed cavity below the electric heating element. The space between the shell and the inner pot wall of the invention is a sealed space, which realizes low consumption and continuous heat preservation, and solves the problem of electric heating cooking pots in the prior art. The problem of low thermal efficiency, because the part of the bottom that is in direct contact with the food is the heating surface, the thermal efficiency is high, the structural space is small, and the production cost is low. the

Another Chinese utility model patent CN201418654 (published on March 10, 2010) provides an energy-saving electric pressure cooker, including a pressure cooker body, a pot cover, a safety valve, and a pressure cooker seat. The heating element is directly installed at the bottom of the pot, and the temperature sensor Placed close to the pot liner, the heating element and the pot liner are installed in the pot body shell to form a pot body, and the pot body can be placed on the pressure cooker base, and they are electrically connected by joints. Compared with the ordinary pot body with heating plate contacting heat transfer, the above-mentioned heating element such as electric heating tube or electric heating film is welded together with the pot body, which has high thermal efficiency and accurate control. the

Considering the defects of low thermal efficiency of ordinary pots, Chinese invention patent CN1094934 (November 16, 1994) also provides an electric rice cooker heated by electric heating film, which consists of a pot cover, an inner tank, an outer shell, an inner shell, a temperature control Element, electric heating element, control circuit and control switch, the invention point is that the electric heating element adopts electric heating film, which is coated on the outer surface of the inner tank, and an inner tank shield is set outside the inner tank, the two are at the flange The connection constitutes a composite liner, and the shield must be provided with binding posts respectively connected to the positive and negative poles of the electric heating film and the temperature control element, and the control circuit socket is correspondingly installed on the inner shell to match the binding posts. The electric heating film of the electric rice cooker is coated on the outer surface of the inner container, directly heats the pot body, and has high thermal efficiency. the

The above-mentioned self-heating pot has improved thermal efficiency, but it has not been popularized. The reasons are as follows: 

1. As in CN201418654, the exposure of the electric heating tube makes consumers question its cleaning and worry about the risk of electric shock. Moreover, if the electric heating element such as the electric heating tube or the electric heating film is exposed, once the pot body is hit, it is easy to cause the electric heating tube or the electric heating film to be damaged. .

2. Self-heating pots such as CN201418654 and CN1094934 are electrically connected at the bottom, and sockets must be installed at the bottom. The appearance is quite different from the inner pots of existing products. Consumers question its cleaning and worry about the risk of electric shock. When used in products such as rice cookers or electric pressure cookers, the lower part of the rice cooker or electric pressure cooker sometimes needs to be immersed in water for cleaning, causing consumers to worry about the sealing of the socket, and also worry that foreign objects will get stuck in the socket and cause problems in use. the

Contents of the invention

Aiming at the deficiencies of the prior art, the present invention provides a composite cooking pot that can ensure high thermal efficiency and at the same time eliminate consumers' doubts about use. the

In order to realize the foregoing invention object, adopt following technical scheme:

A composite cooking pot, including an inner pot body and an electric heating element. The inner pot body is a container body with a pot wall and a pot bottom. It is characterized in that a shielding protective cover is set outside the inner pot body, and the shielding protective cover is a concave shape. The container is sealed and fastened to the inner pot body, and the electric heating element is fixedly placed in the airtight cavity between the inner pot body and the shielding protective cover. The surrounding wall of the pot body shielding protective cover is provided with an electrical connection to realize the electric connection between the electric heating element and the mains power supply The electrical connector is installed on the side upper part of the pot body shielding protective cover. The composite cooking pot of the present invention, the electric heating element is fixedly placed in the airtight cavity between the inner pot body and the shielding protective cover, the heating efficiency is high, and because the electric heating element and the attached electrical elements are hidden by the shielding protective cover, the electrical connection The upper part of the appliance installation side is safer when cleaning the pot, and compared with the bottom of the electrical connector, its manufacturing cost is lower, the process is easier to realize, and it is convenient for processing and manufacturing. The upper side is equipped with an electrical connector. In the case of an electric rice cooker or a pressure cooker with an outer casing, the socket corresponding to the connector can be arranged on the outer casing. After the electrical connector is electrically connected, the appearance design of the whole machine will not be damaged, and the whole machine has great advantages in terms of manufacturing cost and appearance.

According to a preferred embodiment of the present invention, in the composite cooking pot of the present invention, the upper end of the shielding cover is welded, riveted, crimped or screwed to the mouth of the inner pot body. The present invention is not limited to the combination method of the shielding protective cover and the inner pot body, and welding, riveting, crimping or threading can be used in consideration of the maturity of the process and the convenience of implementation. the

Further, in order to achieve precise temperature control, the airtight cavity between the inner pot body and the shielding protective cover of the present invention is also provided with a temperature controller, and the temperature controller is connected to the control circuit of the electric heating element. the

The electric heating element of the present invention is an electric heating tube or an electric heating plate with a built-in electric heating tube, and the electric heating element is in direct contact with the bottom of the inner pot. the

The electric heating element can also be a conductive film printed on the inner pot body, and the conductive film is made with two conductive contacts electrically connected with the electrical connector. the

When the composite cooking pot of the present invention is applied to an electromagnetic heating cooker, the electric heating element can be an electromagnetic coil, and the inner pot body is placed in the cavity surrounded by the induction coil. the

Further, the pot body shielding protective cover is made of the same material as the inner pot body, the bottom thickness of the pot body shielding protective cover is 1/3 to 2/3 of the bottom thickness of the inner pot body, and the side wall thickness of the pot body shielding protective cover is The thickness of the side wall of the inner pot body is 1/3-2/3. the

A meaningful design of the solution of the present invention is that the electrical connector includes an insulating housing that doubles as a handle, and the insulating housing is equipped with electrical contacts connecting the heating element and the mains power supply, and the electrical contacts are set downwards . The insulating shell of the electrical connector is made into the shape of a double-purpose handle, so that the pot is convenient to use, and the electrical connector can be well hidden. the

The function of the protective cover for the pot body of the composite cooking pot of the present invention is to seal the inner pot and protect the electric heating element. The stainless steel body can also be pottery or glass or enamel, or heat-resistant plastic, and the heat-resistant plastic can be coated with metal-imitating water-based paint or the like on the outer surface to achieve an aesthetic effect. the

The shape of the shielding cover of the pot body of the composite cooking pot of the present invention is not limited, and is preferably similar to the shape of the inner pot body wall and the pot bottom, and can be conveniently placed in an electric rice cooker or an electric pressure cooker. When used as a simple pot, the simple pot means that there is no shell, the pot is directly connected to a power source for cooking, and it can also be set as a cube, cylinder or other more beautiful shapes. the

Compared with the prior art, the composite cooking pot of the present invention has the beneficial effect of ensuring thermal efficiency, eliminating consumers’ concerns, and ensuring the safety and convenience of consumers to the greatest extent, and its appearance is completely consistent with existing products. The electric connector is arranged on the side upper part of the pot body shielding protective cover, which ensures the safety and convenience during cleaning. the

the

Description of drawings

Fig. 1 is a schematic structural view of Embodiment 1 of the composite cooking pot of the present invention. the

FIG. 2 is a structural schematic diagram of the composite cooking pot placed in the shell 8 . the

FIG. 3 is a schematic diagram of the structure of the composite cooking pot shown in FIG. 2 separated from the shell 8 . the

FIG. 4 is a three-dimensional schematic view showing an electrical connector of the composite cooking pot of the present invention. the

Fig. 5 is a schematic structural view of the compound cooking pot of the present invention as a simple cooking utensil. the

In the figure: 1. Inner pot body; 2. Outer pot; 3. Heating element; 4. Handle; 5. Electrical contact of electrical connector; 6. Wire; 7. Socket corresponding to electrical connector; . Electrical connectors. the

Detailed ways

The technical solutions of the present invention will be further described below through specific examples. the

Example 1

As shown in Figure 1, a composite cooking pot includes an inner pot body 1 and an electric heating element 3, the inner pot body is a concave container body with a pot wall and a pot bottom, and an outer pot 2 is set on the outside of the inner pot body 1. Outer pot 2 is to block protective cover, and the shape of outer pot 2 is consistent with existing pot body.

In this embodiment, the outer pot 2 is fixed and sealed to the inner pot body by welding, the mouth of the inner pot body 1 has a flange, the upper end of the outer pot 2 is fixed at the mouth of the inner pot body, and the electric heating element 3 is fixedly placed on the inner pot body and In the airtight cavity between the outer pots 2, the peripheral wall of the outer pot is provided with an electrical connector for electrically connecting the heating element with the mains power supply, and the electrical connector is installed on the side upper part of the pot body shielding protection cover. the

In this embodiment, the electric heating element 3 is an electric heating film, and the connection between the electric heating film and the inner pot body is realized by printing the electric heating film on the bottom of the inner pot body 1. The electric heating film has two conductive contacts electrically connected with the electric connector. the

The airtight cavity between the inner pot 1 and the outer pot 2 also has a built-in temperature controller (not shown in the figure), the temperature controller is connected to the control circuit of the electric heating element, and the temperature controller can be located under the heating plate , and there is a certain gap between the top of the temperature controller and the heating plate, which can be a magnetic steel temperature limiter or a metal sheet temperature controller, etc., for precise temperature control of the pot. the

The outer pot 2 is a stainless steel pot body, which is a non-heating layer, which can achieve better heat preservation effect without affecting its cooking effect. Further, the inner pot body and the outer pot can be vacuumed to achieve better Insulation effect. the

The electrical connector in this embodiment includes an insulating housing that doubles as a handle 4. The electrical contact 5 is installed on the insulating housing. The electrical contact 5 is connected to the heating element 3 through a wire 6, and the electrical contact is set downward. The downward design of the electrical contacts is more conducive to manufacturing, safer, and convenient for cleaning the pot, but it is not limited to the downward setting. The electrical connector can be set on the side of the outer pot body, and the electrical contacts can be set horizontally, as shown in Figures 2 and 3. As shown, the housing 8 is provided with a socket 7 corresponding to the electrical connector, forming a pair of female sockets and male plugs. The socket 7 is connected to the electrical control element and the mains power supply. When the cooking pot is placed in the housing 8, the electrical contacts are inserted into the socket. 7, in contact with the conductive sheet of the socket, connected to the external power supply, and heated by the electrothermal film. the

In the present invention, by setting the handle as the outer shell of the electrical connector, it is ensured that the appearance of the entire pot body is consistent with that of the existing products, eliminating consumers' concerns about use, and the electrical connector is arranged on the upper part of the outer pot side to maximize It guarantees the safety and convenience of the product. the

Example 2

In this embodiment, the electric heating element 3 is an electric heating plate, which is fixed on the bottom of the inner pot body, directly contacts with the inner pot, or is fixed on the inner surface of the outer pot, as long as it is placed in the airtight space between the inner pot body and the outer pot (shielding protective cover). within the cavity. All the other are with embodiment 1.

Example 3

Shown in Fig. 5 is composite cooking pan of the present invention as a kind of simple cooking utensil. Including an inner pot body 1 and an electric heating element 3, the inner pot body is a container body having a pot wall and a pot bottom, and an outer pot 2 is set on the outside of the inner pot body 1, and the outer pot 2 is a shielding cover. The outer pot in this embodiment 2. It is connected to the inner pot body through threads, and the joint is provided with a seal. The upper side of the outer pot is provided with an electrical connector 9 to realize the electrical connection between the heating element and the mains power supply. The position of the connector can be set according to the user's habits , about two-thirds of the height of the entire inner pot, when connected to an external power source through a power cord, it can be used as an easy-to-use self-heating pot.

To sum up, after reading the document of the present invention, those of ordinary skill in the art can make various other corresponding conversion schemes according to the technical solutions and technical concepts of the present invention without creative mental work, all of which fall within the protection scope of the present invention. the

Claims (11)

1. A composite cooking pot, comprising an inner pot body and an electric heating element, the inner pot body is a container body having a pot wall and a bottom of a pot, it is characterized in that a shielding cover is set outside the inner pot body, and the shielding guard is A concave container, sealed and fastened to the inner pot body, the electric heating element is fixedly placed in the airtight cavity between the inner pot body and the shielding protective cover, and the surrounding wall of the shielding protective cover is provided with an electrical connection for the electric heating element to be electrically connected to the mains power supply The electrical connector is installed on the side upper part of the pot body shielding protective cover. 2. The composite cooking pot according to claim 1, characterized in that the upper end of the protective cover is welded, riveted, crimped or screwed to the mouth of the inner pot body. 3. The composite cooking pot according to claim 1, characterized in that the airtight cavity between the inner pot body and the shielding protective cover is also provided with a temperature controller, and the temperature controller is connected to the control circuit of the electric heating element. 4. The composite cooking pot according to claim 2, wherein the electric heating element is an electric heating tube or an electric heating plate with a built-in electric heating tube, and the electric heating element is in direct contact with the bottom of the inner pot. 5. The composite cooking pot according to claim 2, wherein the electric heating element is a conductive film printed on the metal substrate, and the electric heating element is in direct contact with the bottom of the inner pot. 6. The composite cooking pot according to claim 2, wherein the electric heating element is a conductive film printed on the inner pot body, and the conductive film is formed with two conductive contacts electrically connected with the electrical connector. 7. The composite cooking pot according to claim 2, wherein the electric heating element is an electromagnetic coil, and the inner pot is placed in the cavity surrounded by the induction coil. 8. The composite cooking pot as claimed in claim 2, characterized in that the shielding protective cover and the inner pot body are made of the same material, and the bottom thickness of the shielding protective cover is 1/3-2/3 of the bottom thickness of the inner pot body, The thickness of the side wall of the shielding protective cover is 1/3-2/3 of the thickness of the side wall of the inner pot body. 9. The composite cooking pot according to any one of claims 1-8, characterized in that the electrical connector includes an insulating housing that doubles as a handle, and the insulating housing is equipped with electrical contacts connecting the heating element and the mains power supply, The electrical contacts are arranged downwards. 10. The composite cooking pot according to claim 8, characterized in that the shielding cover of the pot body is made of metal material or non-metal material, or is made of a combination of metal and non-metal through inlay or crimping process. 11. The composite cooking pot as claimed in claim 8, wherein the shape of the shielding cover of the pot body is similar to that of the inner pot wall and the bottom of the pot.

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