CN114246463A

CN114246463A - Cooking utensil of even heating

Info

Publication number: CN114246463A
Application number: CN202011024715.2A
Authority: CN
Inventors: 朱泽春; 王昌明; 王源; 莫林锋
Original assignee: Joyoung Co Ltd
Current assignee: Joyoung Co Ltd
Priority date: 2020-09-25
Filing date: 2020-09-25
Publication date: 2022-03-29

Abstract

The invention provides a uniformly-heated cooking appliance which comprises a cooker body and an inner container, wherein the cooker body is provided with an accommodating cavity for accommodating the inner container, the inner container is provided with a cooking cavity, the cooking cavity of the inner container is communicated with the accommodating cavity, a heating cabin body is arranged at the bottom of the accommodating cavity, the heating cabin body comprises a pressurizing cover plate, a protruding part is arranged on the pressurizing cover plate, a steam outlet is arranged on the protruding part, and steam generated by the heating cabin body is collected to the protruding part and enters the cooking cavity of the inner container from the steam outlet. The heating chamber body is arranged at the bottom of the accommodating chamber to generate steam to cook the inner container cooking chamber, so that the heating uniformity of the inner container can be improved, and the inner container can be heated by the steam in a surrounding manner.

Description

Cooking utensil of even heating

Technical Field

The invention relates to the technical field of food cooking, in particular to a cooking appliance capable of uniformly heating.

Background

The application of steam heating in the field of kitchen cooking is relatively common, and the existing steam heating cooking appliances mainly comprise the following parts: 1. traditional steamer sets up the pan of dress water in the bottom, and the pan top sets up one deck or multilayer steaming grid, and the aquatic products in the bottom pan of heating produces steam and heats the edible material of steaming grid top, and the shortcoming is that can't place liquid edible material in the steaming grid, perhaps needs to set up solitary container splendid attire in addition and treats the culinary art edible material, but gets and put inconvenient again. 2. Steam rice cooker has appeared a steam heating's rice cooker among the prior art, through the internal instant heating type steam generator that sets up of a kind of deep pot, produces steam and directly inserts rice through a steam conveying pole inside to carrying steam in the inner bag, and this kind of scheme exists a defect that instant heating type steam generator produces the incrustation scale easily, inconvenient washing, and steam conveying pole influences the appearance of final rice moreover. 3. The cooking container is placed in a cooker body, water is placed in the cooker body to generate steam to heat the cooking container, and the defects that the steam generation is slow, the cooking time is long, and water is wasted are overcome.

Disclosure of Invention

The technical problem to be solved by the invention is to overcome the defects of the prior art and provide a cooking appliance for uniform heating, which can improve the cooking effect.

In order to achieve the purpose, the invention provides a cooking appliance capable of uniformly heating, which comprises a cooker body and an inner container, wherein the cooker body is provided with an accommodating cavity for accommodating the inner container, the inner container is provided with a cooking cavity, the cooking cavity of the inner container is communicated with the accommodating cavity, a heating cabin body is arranged at the bottom of the accommodating cavity, the heating cabin body comprises a pressurizing cover plate, a protruding part is arranged on the pressurizing cover plate, a steam outlet is arranged on the protruding part, and steam generated by the heating cabin body is collected to the protruding part and enters the cooking cavity of the inner container from the steam outlet.

Furthermore, be equipped with the mounting hole on the pressure boost apron, the bellying can be dismantled and set up on the mounting hole, be equipped with a plurality of meshs on the bellying and form steam outlet.

Furthermore, the protruding part comprises a protruding top part and a protruding side part, the steam outlet is formed in the protruding side part, and the protruding top part is used for being in contact with the bottom surface of the inner container.

Further, the heating cabin comprises a cabin top wall and a cabin side wall, wherein the cabin top wall is composed of a pressurizing cover plate, and the pressurizing cover plate is connected with the cabin side wall in a sealing mode.

Further, be equipped with the water inlet on the lateral wall of cabin body, still be equipped with the water tank on the a kind of deep pot body, the water tank leads to pipe and passes the water inlet supplies water to heating cabin internal.

Further, the height of the water inlet is higher than the height of the liquid level in the heating cabin body.

Further, when the heating cabin body is heated, the water tank slowly supplies water to the heating cabin body, so that the liquid level in the heating cabin body is lower than the preset liquid level, and steam is quickly generated.

Furthermore, an inner concave part is arranged on the pressurizing cover plate, and a backflow hole is formed in the inner concave part.

Furthermore, a one-way valve is arranged on the backflow hole, the heating cabin body is provided with a heating stage and a heating stopping stage, steam generated in the heating stage enters the inner container cooking cavity from the steam outlet, the one-way valve prevents the steam from overflowing, and the steam is condensed in the heating stopping stage to form condensed water which flows back into the heating cabin body from the one-way valve.

Furthermore, a water inlet is arranged on the side wall of the cabin body, and the backflow hole is positioned on one side far away from the water inlet.

The invention has the following beneficial effects:

1. the heating chamber body is arranged at the bottom of the accommodating chamber to generate steam to cook the inner container cooking chamber, so that the heating uniformity of the inner container can be improved, and the inner container can be heated by the steam in a surrounding manner. Moreover, the pressurizing cover plate is arranged, so that the heating cabin body forms certain pressure, and high-temperature steam can be generated to cook the inner container cooking cavity. Be equipped with steam outlet on the bellying of pressure boost apron, can improve the effect of play steam on the one hand for steam can be followed and spread all around, sets up the bellying on the other hand, can avoid comdenstion water, even food waste to cause the jam to steam outlet, and influence the effect of play steam. The bulge part also has the function of collecting steam in the heating cabin body, so that the temperature at the bulge part is higher, and the generation of condensed water is reduced.

2. The steam-water separator is characterized in that a mounting hole is formed in the pressurizing cover plate, the protruding portion is detachably arranged on the mounting hole, and a plurality of meshes are formed in the protruding portion to form a steam outlet. The setting can be dismantled to the bellying, can conveniently dismantle the washing to the bellying, and steam outlet comprises a plurality of meshes, can avoid food residue to flow to heating cabin internal.

3. The bellying includes protruding top and protruding lateral part, the steam outlet is established on the protruding lateral part, is difficult to assemble the comdenstion water, can make steam from diffusing all around moreover, in addition, protruding top is used for contacting with the inner bag bottom surface, can avoid the bellying when heating the internal production certain pressure in cabin, breaks away from the heating cabin body.

4. When the heating cabin body is heated, the water tank slowly supplies water to the heating cabin body, so that the liquid level in the heating cabin body is lower than the preset liquid level, and steam is quickly generated. Through the internal water supply of slow to heating cabin for the internal liquid level of heating cabin is in lower level always, consequently can last quick production steam and heat inner bag culinary art chamber, can practice thrift the water consumption moreover, can not cause the water yield unnecessary extravagant.

Drawings

FIG. 1 is a schematic cross-sectional view of a cooking device according to an embodiment of the present invention;

fig. 2 is a schematic cross-sectional view of a pressure cover of a cooking appliance according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of the working principle of the cooking appliance according to the embodiment of the present invention;

fig. 4 is a schematic view illustrating a disassembled pressure cover of the cooking appliance according to the embodiment of the present invention;

fig. 5 is a partial sectional view schematically illustrating a cooking appliance according to an embodiment of the present invention;

FIG. 6 is an enlarged view taken at A in FIG. 5;

fig. 7 is a top view of a cooking appliance according to an embodiment of the present invention.

The reference numbers in the figures illustrate:

the cooker body 1, the pot cover 2, the inner bag 3, the heating cabin 4, the water inlet 43, the sealing ring 44, the horizontal fixing section 441, the vertical extension section 442, the installation step 45, the pressurizing cover plate 5, the protruding portion 51, the protruding top 511, the protruding lateral portion 512, the installation hole 52, the convex rib 53, the return hole 54, the return water cavity 55, the check valve 56, the upper sealing surface 561, the lower sealing surface 562, the connecting section 563, the water tank 6, the water pump 61, and the heating device 7.

Detailed Description

The technical solutions of the embodiments of the present invention are explained and illustrated below with reference to the drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative effort belong to the protection scope of the present invention.

Example one

The cooking appliance shown in figure 1 comprises a cooker body 1 and an inner container 3, wherein the cooker body 1 is provided with a containing cavity for containing the inner container 3, the inner container 3 is provided with a cooking cavity, the cooking cavity of the inner container 3 is communicated with the containing cavity, a heating cabin body 4 is arranged at the bottom of the containing cavity, the heating cabin body 4 comprises a pressurizing cover plate 5, a steam outlet is formed in the pressurizing cover plate 5, and the heating cabin body generates steam to enter the inner container cooking cavity from the steam outlet. In specific cooking, referring to fig. 3, by placing food materials in the inner container 3, steam generated by the heating chamber 4 is filled in the accommodating cavity and enters the cooking cavity of the inner container 3 to heat the food materials in the inner container 3, so as to achieve the purpose of uniform heating. When steam is holding in the chamber, just can heat the lateral wall of inner bag 3, and get into the culinary art chamber after, can heat the inside wall of inner bag 3 and the edible material in the inner bag culinary art chamber for edible material is heated evenly. Moreover, through setting up pressure boost apron 5 for the heating cabin body forms certain pressure, can produce high temperature steam and cook inner bag culinary art chamber. Due to the arrangement of the pressurizing cover plate 5, the heating cabin body 4 is separated from the inner container cooking cavity above, and the inner container cooking cavity can be ensured to form high-temperature steam quickly. Specifically, be equipped with pot cover 2 on the a kind of deep pot body 1, 2 lids of pot cover close and hold the chamber for inner bag culinary art chamber is located and holds the intracavity, and when bottom steam produced, the diffuse is holding the intracavity, can heat the edible material in the inner bag, can avoid a large amount of steam to spill over the environment in, causes the waste of energy. It can be understood that the pot cover 2 is provided with the air outlet, and the area of the air outlet is smaller than that of the steam outlet, so that more steam in the accommodating cavity is gathered, and the effect of quick cooking is achieved.

Referring to fig. 1 and 2, preferably, the pressure-increasing cover plate 5 is provided with a protruding portion 51, the protruding portion 51 is provided with a steam outlet, and the steam generated by the heating chamber 4 is collected to the protruding portion 51 and enters the inner container cooking cavity from the steam outlet. Be equipped with steam outlet on the bellying 51 of pressure boost apron 5, can improve the effect of play steam on the one hand for steam can be followed and spread all around, sets up the bellying on the other hand, can avoid comdenstion water, even food waste to cause the jam to steam outlet, and influence the effect of play steam. When steam is discharged, the convex part 51 has the function of collecting steam in the heating cabin body 4, so that condensed water at a steam outlet can be reduced, and the influence of excessive condensed water on steam discharged from the steam outlet is avoided.

Specifically, referring to fig. 2, the protruding portion includes a protruding top portion 511 and a protruding side portion 512, the steam outlet is disposed on the protruding side portion 512, condensed water is not easy to collect, and steam can diffuse around, the protruding top portion 511 is used for contacting with the bottom surface of the inner container, so as to prevent the pressurizing cover plate 5 from separating from the heating cabin 4 when a certain pressure is generated in the heating cabin 4.

Preferably, the area of the steam outlet is less than 1/10 of the area of the pressure boost cover plate. The steam outlet has a feeling of not reaching the steam outlet, so that a certain pressure can be formed in the heating cabin body, and high-temperature steam is sprayed out from the steam outlet.

Preferably, referring to fig. 4, the pressurizing cover plate 5 is detachably disposed and can be cleaned. To steam heating device, instant heating type steam heating device especially, though can produce steam fast, but have a great drawback and just after using for a long time, can have the incrustation scale problem, and be difficult to wash, and this application can conveniently dismantle pressure boost apron 5 and wash through setting up detachable pressure boost apron 5. Can wash pressure boost apron and steam outlet on the one hand, can wash the inside of the heating cabin body 4 on the other hand, avoid the incrustation scale gathering in the heating cabin body 4, influence product result of use.

Furthermore, the pressurizing cover plate is provided with a mounting hole 52, the protruding portion 51 is detachably arranged on the mounting hole 52, and the protruding portion 51 is provided with a plurality of meshes to form a steam outlet. The bulge 51 can be disassembled to be cleaned conveniently, and even if the meshes on the bulge 51 are blocked, the accessories can be replaced conveniently for maintenance.

Specifically, the heating chamber 4 includes a chamber top wall 41 and a chamber side wall 42, the chamber top wall is composed of the pressurizing cover plate 5, and the pressurizing cover plate 5 is hermetically connected to the chamber side wall 42. A sealed space is formed in the heating cabin body 4, the heating device 7 is arranged at the bottom of the heating cabin body 4, steam can be rapidly generated by discharging water in the heating cabin body 4, and the steam is sprayed out from the steam outlet to cook food materials in the inner container.

In this embodiment, a sealing device 71 is provided between the heating device 7 and the bottom wall of the heating chamber 4. The heating device 7 of the embodiment is a heating plate, a heating pipe is arranged below the heating plate, the upper surface of the heating plate forms the bottom surface of the heating cabin body and is used for contacting with water to heat the water to form steam, and a sealing device is arranged at the joint of the heating plate and the heating cabin body after the heating plate is installed on the heating cabin body, so that water in the heating cabin body is prevented from flowing onto an electrical component below the heating device, such as the heating pipe. In other embodiments, the heating device 7 may also be a PTC heater or an infrared heating film, or the like.

In this embodiment, referring to fig. 1, a water inlet 43 is disposed on the side wall 41 of the chamber body, and a water tank 6 is further disposed on the cooker body, and the water tank passes through the water inlet 43 through a water pipe to supply water into the heating chamber body 4. The water tank 6 is arranged to supply water to the heating cabin 4, so that the use by a user is facilitated, and the energy is saved. Particularly, when cooking, the user has corresponding culinary art time through selecting corresponding culinary art procedure, so the water tank can provide corresponding water yield, avoids directly placing water among the prior art because can not hold accurate water consumption and lead to the water yield too much extravagant or the water yield too little food material culinary art not cooked. During specific use, for example cook beef, the culinary art time is longer, and water tank 6 lasts to heating the water supply time of the cabin body also can be on a long side, and the steam of production just also can be on a large side, and for example cook sweet potato again, the culinary art time is shorter relatively, and the water tank lasts also can be on a short side to the time of heating the water supply of the cabin body, and the steam of production also will be on a small side. During specific cooking, after the corresponding food materials are placed, the corresponding cooking programs can be selected, and the purposes of different cooking time and different water consumption are achieved.

In this embodiment, referring to fig. 3, the height of the water inlet 43 is higher than the height of the liquid level in the heating chamber 4. The liquid level in the heating chamber body is at a lower height, so that when the heating device 7 is used for heating, a small amount of water can be quickly boiled to generate steam which is sprayed out from a steam outlet, and the water in the heating chamber body 4 can be prevented from flowing back from the water inlet 43.

When the steam heating cabin is applied specifically, when the heating cabin 4 is heated, the water tank 6 supplies water to the heating cabin slowly, so that the liquid level in the heating cabin is lower than the preset liquid level, and steam is generated rapidly.

It will be appreciated that a water pump 61 is provided between the water tank 6 and the water inlet 43. Make water tank 6 to the heating cabin body water supply through water pump 61, water pump 61 can receive cooking utensil's controlling means's regulation, realizes intelligent water supply to the water economy volume.

Preferably, the pressurizing cover plate is a heat-conducting metal piece, so that the pressurizing cover plate is convenient to disassemble and clean, and on the other hand, heat generated by the heating cabin body can be transferred to the pressurizing cover plate and further radiated to the inner container, so that the heating of the inner container is promoted, and the energy efficiency is improved. Moreover, the generation and the backflow of condensed water can be reduced, so that the condensed water on the pressurizing cover plate is vaporized due to the heating of the lower heating cabin body.

In summary, the present embodiment has the following beneficial effects:

1. the pressurizing cover plate is arranged, so that the heating cabin body can generate certain pressure, high-temperature steam is formed to be sprayed out from the steam outlet to cook food materials in the inner container, and the purpose of uniform heating is achieved. And high-temperature steam can be quickly formed in the closed space of the heating cabin body. The inner container cooking cavity is separated from the heating cabin body through the pressurizing cover plate, and the defect that the inner container cannot rise due to delay temperature when being soaked in water in the prior art is avoided.

2. The steam outlet is formed in the protruding portion of the pressurizing cover plate, so that the steam outlet can be prevented from being blocked, the protruding portion also has the function of collecting steam, and the generation of condensed water at the protruding portion can be reduced.

3. The pressure boost apron can be dismantled and set up, can conveniently wash the steam outlet on the pressure boost apron, also conveniently clears up the incrustation scale that produces in the heating cabin body.

4. The water tank is arranged to supply water to the heating cabin body, so that steam can be generated quickly, energy is saved, and water quantity is not wasted.

Example two

In this embodiment, referring to fig. 5, a sealing ring 44 is disposed between the pressure increasing cover plate 5 and the side wall 42 of the chamber body, a steam outlet is disposed on the pressure increasing cover plate 5, and the steam generated by the heating chamber body enters the inner container cooking cavity from the steam outlet. By arranging the sealing ring, a pressure environment can be formed in the heating cabin 4, and high-temperature steam can be sprayed out from the steam outlet.

In this embodiment, the cabin sidewall 42 is provided with a mounting step 45, and the pressure-increasing cover plate 5 is provided on the mounting step 45. The pressurizing cover plate 5 can be positioned and installed by arranging the installation step 45, and the sealing ring 44 can be ensured to have good sealing effect.

Specifically, referring to fig. 5 and 6, the sealing ring 44 includes a horizontal fixing section 441 and a vertical extending section 442, and the horizontal fixing section 441 is clamped between the plenum cover 5 and the sidewall of the nacelle. The vertical extension section 442 is located in the heating cabin body and deforms and adheres to the inner wall of the heating cabin body when the heating cabin body generates pressure. Vertical extension 442 in this embodiment is the free end, extends from the below to the top, and when the too much formation pressure of heating cabin body steam, vertical extension 442 can take place the laminating of deformation at the heating cabin body inner wall, and pressure is when big more in addition, and the laminating of vertical extension 442 is tighter for sealed effect is better, ensures that the installation gap department of pressure boost apron 5 and the heating cabin body can not leak gas.

In this embodiment, the edge of the pressure cover plate 5 is provided with a downward rib 53, and the horizontal fixing section 441 is clamped by the rib 53 and the mounting step 45. Ensuring that the seal ring 44 is not easily removed.

Similar to the embodiment, in the embodiment, a water inlet is arranged on the side wall 42 of the chamber body, a water tank 6 is further arranged on the cooker body, the water tank passes through the water inlet through a water pipe to supply water to the heating chamber body, and the water inlet 43 of the embodiment is lower than the sealing ring 44. The sealing ring 44 is thus prevented from affecting the inflow of water into the heating chamber 4.

A water pump 61 is arranged between the water tank 6 and the water inlet 43. The water tank 6 can supply water to the heating chamber 4 by a water pump 61. In this embodiment, water tank 6 is for can dismantling the setting, conveniently adds water. Of course, the water tank 6 may be fixedly installed in the cooker body, and water may be added by opening a lid of the water tank above the water tank 6.

EXAMPLE III

In this embodiment, referring to fig. 5 and fig. 6, an inner concave portion is provided on the pressure-increasing cover plate 5, a backflow hole 54 is provided on the inner concave portion, and the steam condensate in the accommodating cavity flows back into the heating cabin 4 from the backflow hole 54.

Through setting up the backward flow hole 54, after the steam that holds the intracavity is through the condensation, can follow the backward flow hole 54 and flow into the heating cabin body 4, practice thrift the water consumption of the heating cabin body, the comdenstion water temperature of backward flow is higher moreover, can promote the temperature of the water in the heating cabin body 4 for the water in the heating cabin body 4 can the short time produce steam fast. Because the backflow hole 54 is arranged for backflow of the condensed water, the escape of steam can be reduced, and the purpose of energy conservation is achieved.

In this embodiment, referring to fig. 7, the side wall of the chamber is provided with a water inlet 43, and the backflow hole 54 is located at a side far away from the water inlet. So set up, when can avoid water inlet 43 to intake, the splash splashes on the backward flow hole 54, influences the backward flow of comdenstion water.

In this embodiment, a water return cavity 55 is disposed below the pressure cover plate 5, and the top surface of the water return cavity 55 is provided with the return hole 54. The condensed water formed by condensing the steam in the containing cavity flows back to the backwater cavity 55 through the backwater hole 54, and then flows into the heating chamber 4 through the backwater cavity 55, so that the speed of generating the steam by the heating chamber 4 can be prevented from being influenced.

In this embodiment, the backwater chamber 55 includes a chamber sidewall and a chamber bottom wall, and a check valve 56 is disposed on the chamber bottom wall. The one-way valve 56 is used to prevent steam from escaping from the heating chamber and to allow return water to flow into the heating chamber.

Specifically, the check valve 56 includes a through hole on the bottom wall of the cavity and a sealing member disposed on the through hole and capable of moving up and down. The sealing element comprises an upper sealing surface 561, a lower sealing surface 562 and a connecting section 563 for connecting the upper sealing surface with the lower sealing surface, the connecting section 563 penetrates through the through hole, the cross section of the connecting section is smaller than that of the through hole, and the areas of the upper sealing surface and the lower sealing surface are larger than that of the through hole. The sealing member movable up and down has two states, and when steam is generated by heating the chamber 4, the lower sealing surface 562 seals the penetration hole so that the steam cannot escape from the penetration hole. When the heating cabin generates steam, pressure is gradually formed, so that the lower sealing surface 562 is attached to the bottom surface of the water return cavity 55, and when the steam quantity is larger and the pressure is larger, the lower sealing surface 562 is attached to the lower sealing surface more tightly, and the steam is prevented from escaping from the through hole; when the heating cabin stops heating and steam stops generating, steam in the accommodating cavity is supplied without continuous steam, partial steam condensate water can be formed, the condensate water flows into the water return cavity 55 through the return hole 54, the more the condensate water in the water return cavity 55 is accumulated, the condensed water accumulated can cause the sealing element to move downwards due to the fact that the heating cabin 4 does not generate steam, and the condensate water flows into the heating cabin from the gap. Through the process, the heating cabin body is provided with a heating stage and a heating stopping stage, steam generated in the heating stage enters the inner container cooking cavity from the steam outlet, the one-way valve prevents the steam from overflowing, and the steam is condensed in the heating stopping stage to form condensed water which flows back into the heating cabin body from the one-way valve. When the heating cabin body works specifically, the heating cabin body can be heated intermittently, so that the condensed water can flow back conveniently, and the water is saved.

In order to facilitate the backflow of the backflow hole 54, the concave portion is located at the lowest portion of the upper surface of the pressure feed cover plate 5. With this arrangement, when the condensed water is formed in the accommodating chamber, the condensed water flows downward to the concave portion and flows back from the return hole 54.

It is understood that the above-mentioned embodiments in the present embodiment can be combined with each other to obtain further embodiments without conflict.

Claims

1. The utility model provides an even cooking utensil who heats, includes a kind of deep pot body and inner bag, the a kind of deep pot body has the chamber that holds that is used for placing the inner bag, the inner bag has the culinary art chamber, a serial communication port, the culinary art chamber intercommunication of inner bag holds the chamber, it is equipped with the heating cabin body to hold the chamber bottom, the heating cabin body includes the pressure boost apron, be equipped with the bellying on the pressure boost apron, be equipped with steam outlet on the bellying, the heating cabin body produces steam and collects the follow to the bellying steam outlet gets into inner bag culinary art chamber.

2. The uniformly heating cooking utensil of claim 1 wherein the pressure cover plate has mounting holes, the raised portion is removably disposed on the mounting holes, and the raised portion has a plurality of mesh openings to form steam outlets.

3. The uniformly heating cooking utensil of claim 1 wherein the raised portion comprises a raised top and raised sides, the steam outlet being provided on the raised sides, the raised top being configured to contact the bottom surface of the inner container.

4. The uniformly heated cooking utensil of claim 1 wherein the heating chamber comprises a chamber top wall and chamber side walls, the chamber top wall comprised of the plenum cover, the plenum cover sealingly attached to the chamber side walls.

5. The uniformly heating cooking utensil of claim 4 wherein the side wall of the chamber is provided with a water inlet, and the cooker body is further provided with a water tank, and the water tank is connected with the water inlet through a water pipe to supply water to the heating chamber.

6. The uniformly heated cooking appliance of claim 5, wherein the water inlet is at a height above a level of liquid within the heating chamber.

7. The uniformly heated cooking utensil of claim 5 wherein the water tank supplies water slowly to the heating chamber body while the heating chamber body is heated, such that the liquid level in the heating chamber body is below a predetermined liquid level to rapidly generate steam.

8. The uniformly heated cooking utensil of claim 1 wherein the pressure cover plate has an interior recess with a return orifice.

9. The uniformly heated cooking utensil of claim 8 wherein the return hole is provided with a one-way valve, the heating chamber body has a heating stage and a heating stop stage, the heating stage produces steam which enters the inner container cooking cavity from the steam outlet, the one-way valve prevents the steam from overflowing, and the heating stop stage condenses the steam to form condensed water which flows back into the heating chamber body from the one-way valve.

10. The even heating cooking utensil of claim 8 wherein the side wall of the chamber has a water inlet and the return hole is located on a side away from the water inlet.