CN213309144U - Electric heating lunch box - Google Patents

Abstract

The utility model discloses an electric heating lunch box, which comprises a bottom cover, a middle seat, a face cover, a sealing structure and a pressure limiting valve, wherein the middle seat is arranged on the bottom cover, and the middle seat and the bottom cover enclose a heating chamber; the surface cover is arranged on the middle seat, the surface cover and the middle seat form a cooking chamber in an enclosing mode, and a steam port communicated with the cooking chamber is formed in the top of the surface cover; the sealing structure is arranged between the middle seat and the surface cover; the pressure limiting valve is arranged at the steam port, the pressure limiting valve is provided with a steam outlet communicated with the steam port, and the pressure limiting valve can block the steam port so that the pressure of the cooking chamber is greater than the atmospheric pressure during cooking. A sealing structure is arranged between the middle seat and the surface cover and is used for sealing a gap between the middle seat and the surface cover; the pressure limiting valve on the face cover can block the steam port, so that the cooking chamber forms a closed chamber, the pressure of the cooking chamber is greater than the atmospheric pressure during cooking, a good micro-pressure effect is generated, the temperature of water can exceed 100 ℃, food is cooked under high temperature and high pressure, the cooking time is shortened, electricity is saved, and the sterilizing effect is good.

Description

Electric heating lunch box

Technical Field

The utility model relates to a kitchen utensil technical field particularly, relates to an electric heat lunch-box.

Background

Ordinary electric heat lunch-box includes the bottom, well seat and face lid and steam valve, face lid direct mount is on well seat, the steam valve is installed on the face lid, the steam passage of steam valve is normally open state, no matter what kind of operating condition is in to the electric heat lunch-box, the steam passage all is open always, this makes its culinary art room can't form a sealed chamber, consequently ordinary electric heat lunch-box heats water, the temperature is the highest can only reach 100 degrees, then even reheat, the temperature of water can not exceed 100 degrees yet, it is long and the power consumption is big to lead to its culinary art time.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides an electric heating lunch box, which can shorten the cooking time.

The electric heating lunch box comprises a bottom cover, a middle seat, a surface cover, a sealing structure and a pressure limiting valve, wherein the middle seat is arranged on the bottom cover, and a heating chamber is enclosed by the middle seat and the bottom cover; the surface cover is arranged on the middle seat, a cooking chamber is enclosed by the surface cover and the middle seat, and a steam port communicated with the cooking chamber is formed in the top of the surface cover; the sealing structure is arranged between the middle seat and the face cover; the pressure limiting valve is installed on the steam port, the pressure limiting valve is provided with a steam outlet communicated with the steam port, and the pressure limiting valve can block the steam port so that the pressure of the cooking chamber is larger than the atmospheric pressure during cooking.

According to the utility model discloses electric heat lunch-box has following beneficial effect at least: a sealing structure is arranged between the middle seat and the surface cover and is used for sealing a gap between the middle seat and the surface cover; the pressure limiting valve on the face cover can block the steam port to enable the cooking chamber to form a closed chamber, so that the pressure of the cooking chamber is greater than the atmospheric pressure during cooking to generate a good micro-pressure effect, the water temperature can exceed 100 ℃, food is cooked under high temperature and high pressure, the cooking time can be shortened, the electricity is saved, and the sterilizing effect is good.

According to some embodiments of the utility model, seal structure is the sealing washer, the sealing washer includes body, connector and seal lip, the body is confined frame shape, the connector is protruding to be located the body, the seal lip set up in the connector, the seal lip has the extension volume of left right direction.

According to some embodiments of the invention, the body is non-circular in cross-section and the sealing lip is circular in cross-section.

According to some embodiments of the invention, the top of the middle seat is provided with an annular groove for mounting the sealing structure.

According to some embodiments of the present invention, the pressure limiting valve comprises a valve body and a sealing ball, the valve body is rotatably mounted to the face cover, the steam outlet is located on the valve body, the valve body has a valve cavity communicating with the steam outlet and the steam port; the sealing ball is movably arranged in the valve cavity and can block the steam port.

According to some embodiments of the utility model, the face lid is in steam port department undercut forms the cavity of back taper structure, the ball sealer is located in the cavity.

According to some embodiments of the present invention, the valve further comprises a toggle member, the toggle member is mounted on the valve body and extends into the valve cavity; when the valve body rotates, the poking piece can poke the sealing ball to open the steam port.

According to some embodiments of the utility model, the valve body has a plurality of poroid passageways, the one end of poroid passageway with the valve pocket intercommunication, the other end with the steam outlet intercommunication.

According to some embodiments of the utility model, the lateral wall surface of valve body has the joint convex part, the face lid have with joint convex part matched with spacing groove.

According to some embodiments of the invention, the top of the valve body has a handle that rotates the pressure limiting valve.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic perspective view of an electric lunch box according to an embodiment of the present invention;

FIG. 2 is an exploded view of the electrically heated lunch box of FIG. 1;

FIG. 3 is a schematic cross-sectional view of the electric lunch box shown in FIG. 1 with the steam rack removed and the pressure limiting valve in a normal state;

FIG. 4a is an enlarged view of a portion of FIG. 3A;

FIG. 4b is an enlarged view of a portion of FIG. 3 at C;

FIG. 5 is a schematic cross-sectional view of the electric lunch box shown in FIG. 1 with the steam rack removed and the pressure limiting valve in a pressure relief state;

FIG. 6 is an enlarged view of a portion of FIG. 5 at B;

FIG. 7 is a schematic view of a portion of the pressure limiting valve shown in FIG. 2;

fig. 8 is a schematic view of the pressure limiting valve of fig. 7 from another perspective.

Reference numerals:

an electric heating lunch box 10;

the sealing structure 100, the body 110, the sealing lip 120, the connecting body 130, and the groove 140;

the steam generating device comprises a surface cover 200, a steam port 210, a concave cavity 220 and a limiting groove 230;

a middle seat 300, an annular groove 310;

a bottom cover 400;

the pressure limiting valve 500, the steam outlet 510, the valve body 520, the sealing ball 530, the toggle piece 540, the hole-shaped channel 550, the clamping convex part 560 and the handle 570.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the orientation description, such as the top, bottom, front, rear, left, right, etc., is the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

As shown in fig. 1 to 8, an electric lunch box 10 according to an embodiment of the present invention includes a bottom cover 400, a middle seat 300, a surface cover 200, a sealing structure 100 and a pressure limiting valve 500, wherein the middle seat 300 is installed on the bottom cover 400, and the middle seat 300 and the bottom cover 400 form a heating chamber; the surface cover 200 is arranged on the middle base 300, the surface cover 200 and the middle base 300 enclose a cooking chamber, and the top of the surface cover 200 is provided with a steam port 210 communicated with the cooking chamber; the sealing structure 100 is disposed between the middle seat 300 and the face cover 200 for sealing a gap between the middle seat 300 and the face cover 200; the pressure limiting valve 500 is installed at the steam port 210, the pressure limiting valve 500 has a steam outlet 510 communicated with the steam port 210, and the pressure limiting valve 500 can block the steam port 210 so that the pressure of the cooking chamber is greater than the atmospheric pressure when cooking.

Specifically, referring to fig. 2, the bottom cover 400 and the middle base 300 are rectangular box bodies, each of which has a cavity with an upward opening, the middle base 300 is mounted on the opening of the bottom cover 400, the middle base 300 and the bottom cover 400 enclose a heating chamber, and the electric heating device is located in the heating chamber. The surface cover 200 is a rectangular box body and is provided with a cavity with a downward opening, the surface cover 200 is installed on the middle seat 300, the surface cover 200 and the middle seat 300 enclose a cooking chamber, and the cooking chamber is located above the heating chamber. One corner of the face cover 200 is provided with a steam port 210, the pressure limiting valve 500 is installed at the steam port 210, the pressure limiting valve 500 is provided with a steam outlet 510 communicated with the steam port 210, the steam outlet 510 is communicated with the outside, and the pressure limiting valve 500 can block the steam port. The sealing structure 100 is provided between the middle seat 300 and the face cover 200 for sealing a gap between the middle seat 300 and the face cover 200.

Referring to fig. 3 and 4, a sealing structure 100 is disposed between the middle base 300 and the surface cover 200 for sealing a gap between the middle base 300 and the surface cover 200, so that steam cannot leak from the gap between the middle base 300 and the surface cover 200 during cooking, and simultaneously, a pressure limiting valve 500 on the surface cover 200 can block the steam port 210, so that steam cannot leak from the steam port 210 during cooking, and thus the cooking chamber forms a sealed chamber during cooking, when cooking, steam in the cooking chamber gathers, the pressure of the cooking chamber is greater than atmospheric pressure to generate a good micro-pressure effect, the temperature of water can exceed 100 degrees, food can be cooked at high temperature and high pressure, cooking time can be shortened, power can be saved, and a good sterilization effect can be achieved.

According to some embodiments of the present invention, referring to fig. 4, the sealing structure 100 is a sealing ring, the sealing ring includes a body 110, a sealing lip 120 and a connecting body 130, the body 110 is provided with a through hole 111 penetrating through the body 110; the connecting body 130 is protruded from the body 110, the sealing lip 120 is disposed on the connecting body 130, and the sealing lip 120 has an extension in the left-right direction. The electric heating lunch box 10 generates micro-pressure during cooking, pressure difference is generated between the inside and the outside of a cooking appliance, the surface cover 200 moves upwards under the action of the pressure difference, so that a gap is generated between the surface cover 200 and the middle seat 300 in the vertical direction, and the sealing lip 120 which is positioned on the upper surface of the body 110 and is in contact with the inner wall surface of the surface cover 200 for sealing can seal the gap, so that the sealing reliability during micro-pressure cooking is ensured, air leakage is avoided, the air pressure of a cooking chamber is kept unchanged, and the micro-pressure cooking effect is achieved; meanwhile, the sealing ring is easy to disassemble and assemble, and a user can clean the sealing ring conveniently.

According to some embodiments of the present invention, referring to fig. 4, one side of the sealing lip 120 protrudes from the side of the connecting body 130 to form a groove 140 between the sealing lip 120 and the body 110, so as to increase the extension of the sealing lip 120, thereby improving the sealing reliability

According to some embodiments of the present invention, referring to fig. 4, the inner wall surfaces of the sealing lip 120 and the connecting body 130 are aligned with the inner wall surface of the body 110, facilitating the manufacturing, and simplifying the structure of the mold for manufacturing the sealing ring 100.

According to some embodiments of the present invention, referring to fig. 4, the cross section of the body 110 is non-circular to increase the connection area between the seal lip 120 and the body 110, the cross section of the seal lip 120 is circular, and the deformation of the circular seal lip is large to improve the sealing reliability. The non-circular shape may be square, trapezoidal, elliptical, or other shape. It is further understood that the sealing lip 120 may also be non-circular in cross-section.

According to some embodiments of the present invention, the sealing structure 100 is an integrally formed part, which facilitates mass production of the sealing structure 100 and improves the firmness of connection between the body 110 and the sealing lip 120.

According to some embodiments of the utility model, seal structure 100's material is silica gel, and the deflection of silica gel is big, and long service life. Of course, the material of the sealing structure 100 may be rubber or latex.

According to some embodiments of the present invention, the left and right direction extension of the sealing ring 100 is 0.5 mm to 5 mm, and the upper and lower gaps between the surface cover 200 and the middle base 300 during the micropressure cooking can be sealed.

According to some embodiments of the present invention, the up-down direction extension amount of the seal ring 100 is 0.3 mm to 3 mm, and the gap between the middle seat 300 and the surface cover 200 can be sealed.

According to some embodiments of the present invention, referring to fig. 2, the top of the middle seat 300 is provided with an annular groove 310 for installing the sealing structure 100, improving the connection stability.

According to some embodiments of the present invention, referring to fig. 4 and 6, the pressure limiting valve 500 comprises a valve body 520 and a sealing ball 530, the valve body 520 is rotatably mounted on the face cover 200, the steam outlet 510 is located on the valve body 520, the valve body 520 has a valve cavity communicating with the steam outlet 510 and the steam port 210; sealing ball 530 is movably installed in the valve chamber, and steam port 210 can be sealed off to sealing ball 530's lower extreme, simple structure, the washing of being convenient for.

According to some embodiments of the present invention, referring to fig. 4 and 6, the face cover 200 is recessed downwards at the steam port 210 to form the cavity 220 with an inverted cone structure, and the sealing ball 530 is located in the cavity 220, so as to ensure that the sealing ball 530 is always in an operating state for blocking the steam port 210.

According to some embodiments of the present invention, referring to fig. 4 and 6 and fig. 8, the valve further includes a toggle member 540, the toggle member 540 is mounted on the valve body 520 and extends into the valve cavity; when the valve body 520 rotates, the toggle member 540 can toggle the sealing ball 530 to open the steam port 210, and after cooking is finished, pressure relief is performed, so that the electric heating lunch box 10 can be opened quickly.

According to some embodiments of the present invention, as shown in fig. 8, the distance from the inner wall of the stirring member 540 to the axis of the steam port 210 is variable, and the structure is simple, so that the stirring member 540 can be ensured to stir the sealing ball 530 and can not stir the sealing ball 530. Further, the distance from the middle position of the inner wall of the toggle member 540 to the axis of the steam port 210 is smaller than the distance from the two end portions to the axis of the steam port 210, or the distance from the inner wall of the toggle member 540 to the axis of the steam port 210 gradually increases along the circumferential direction.

According to some embodiments of the present invention, as shown in fig. 8, the toggle member 540 is in the shape of a circular arc, and has a simple structure and is easy to manufacture.

According to some embodiments of the present invention, see fig. 4 and 6 and fig. 8, valve body 520 has a plurality of poroid passageways 550, poroid passageway 550's one end and valve pocket intercommunication, the other end and steam outlet 510 intercommunication, specifically, valve body 520 has thirteen poroid passageways, specifically be twelve bar poroid passageways and a circular poroid passageway, circular poroid passageway is located valve body 520's intermediate position, twelve bar poroid passageways radially disperse the range along circular poroid passageway, a plurality of poroid passageways subdivide and the pressure drop steam in the valve pocket, also be favorable to holding back impurity such as the subsidiary hot water mixture of steam bubble, it glues the adsorption with attenuate liquid bubble wall to be stained with liquid in the steam bubble simultaneously, thereby can realize effectively broken bubble and the mesh of backward flow drainage and anti-overflow. It is understood that the number of the hole-shaped channels may also be 10 or 17, and may also be all circular hole-shaped channels, and the specific number and specific type of the hole-shaped channels and the specific distribution form thereof may be selected according to actual needs, and are not limited specifically herein.

According to some embodiments of the present invention, referring to fig. 4 and 6 and fig. 8, the outer surface of the side wall of the valve body 520 has the joint convex portion 560, and the inner surface of the side wall of the face cover 200 has the limiting groove 230 matched with the joint convex portion 560, so that the valve body 520 is fixedly mounted on the face cover 200, the joint convex portion 560 and the limiting groove 230 are stopped and matched in the up-down direction, and the joint form is connected in a simple structure and has high assembly and disassembly efficiency. Further, the number of the clamping convex portions 560 is three, the three clamping convex portions 560 are uniformly distributed along the circumferential direction of the valve body 520 at intervals, the number of the limiting grooves 230 is three, and the three limiting grooves 230 are uniformly distributed along the circumferential direction at intervals. It is understood that one or two clamping protrusions 560 may be provided, one or two limiting grooves 230 are not distributed along the circumferential direction, and the specific number and specific position of the clamping protrusions 560 and the limiting grooves 230 may be selected according to actual needs, and are not limited herein.

According to some embodiments of the present invention, referring to fig. 4 and 6, the top of the valve body 520 has a handle 570 to facilitate the user to rotate the valve body 520.

According to the utility model discloses a some embodiments, valve body 520 and stirring piece 540 are integrated into one piece spare, are favorable to batch production, can improve the steadiness that valve body 520 and stirring piece 540 are connected again.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. An electric heat lunch-box, its characterized in that includes:

a bottom cover (400);

the middle seat (300) is mounted on the bottom cover (400), and a heating chamber is enclosed by the middle seat (300) and the bottom cover (400);

the face cover (200), the face cover (200) is installed on the middle seat (300), a cooking chamber is enclosed by the face cover (200) and the middle seat (300), and a steam port (210) communicated with the cooking chamber is formed in the top of the face cover (200);

a sealing structure (100), the sealing structure (100) being disposed between the middle seat (300) and the face cover (200) for sealing a gap between the middle seat (300) and the face cover (200);

a pressure limiting valve (500), the pressure limiting valve (500) being mounted to the steam port (210), the pressure limiting valve (500) having a steam outlet (510) in communication with the steam port (210), the pressure limiting valve (500) being capable of plugging the steam port (210) such that the cooking chamber pressure is greater than atmospheric pressure when cooking.

2. An electrically heated lunch box according to claim 1, characterised in that the sealing structure (100) is a sealing ring comprising:

a body (110), the body (110) being in the shape of a closed frame;

a connecting body (130) which is arranged on the body (110) in a protruding way;

and the sealing lip (120), the sealing lip (120) is arranged on the connecting body (130), and the sealing lip (120) has the extension in the left-right direction.

3. The electrically heated lunch box according to claim 2, characterized in that the cross-section of the body (110) is non-circular and the cross-section of the sealing lip (120) is circular.

4. The electrically heated lunch box according to claim 1, characterized in that the top of the center seat (300) is provided with an annular groove (310) for mounting the sealing structure (100).

5. The electrothermal canteen according to any one of claims 1 to 4, wherein the pressure limiting valve (500) comprises:

a valve body (520), the valve body (520) being rotatably mounted to the face cover (200), the steam outlet (510) being located on the valve body (520), the valve body (520) having a valve cavity communicating with the steam outlet (510) and the steam port (210);

a sealing ball (530), said sealing ball (530) movably mounted within said valve cavity, said sealing ball (530) capable of sealing off said vapor port (210).

6. The electric-heating lunch box according to claim 5, wherein the surface cover (200) is recessed downward at the steam port (210) to form a cavity (220) of an inverted cone structure, and the sealing ball (530) is located in the cavity (220).

7. The electrothermal canteen according to claim 5, further comprising a toggle member (540), the toggle member (540) being disposed on the valve body (520) and extending into the valve cavity; when the valve body (520) rotates, the poking piece (540) can poke the sealing ball (530) to open the steam port (210).

8. The electric heat lunch box according to claim 5, wherein the valve body (520) has a plurality of hole-shaped passages (550), one end of the hole-shaped passages (550) communicating with the valve chamber and the other end communicating with the steam outlet (510).

9. The electric heating lunch box according to claim 5, wherein the outer surface of the side wall of the valve body (520) is provided with a clamping convex part (560), and the surface cover (200) is provided with a limiting groove (230) matched with the clamping convex part (560).

10. The electrothermal canteen according to claim 5, wherein the valve body (520) has a handle (570) for rotating the pressure limiting valve (500).

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