CN220512690U - Door structure and cooking box - Google Patents

Abstract

The utility model provides a door body structure and a cooking box, wherein the door body structure comprises a door main body, a door frame and glass arranged on two sides of the door main body, wherein a closed space is formed by enclosing the glass and the door main body; and the supercharging device is arranged in the closed space, is provided with an air outlet communicated with the closed space and an air inlet communicated with the outside, and can increase the pressure in the closed space through the arrangement of the supercharging device when the pressure outside the two glasses changes, so that the pressure difference received by the two glasses is changed, and the burst of the glasses caused by overlarge pressure difference is avoided.

Description

Door structure and cooking box

Technical Field

The utility model relates to the field of household appliances, in particular to a door body structure and a cooking box.

Background

For some pressure steam boxes for steaming rice, the risk of explosion of the door body is low due to the small pressure. In addition, since the iron door is used, the pressure is strong, but the cooking state cannot be observed in this way.

In order to facilitate the observation of the cooking state, the door body of some cooking boxes is usually designed as glass, but when high pressure is generated in the cooking box, the glass door is at risk of explosion by high pressure impact.

Disclosure of Invention

In view of the above, it is desirable to provide a door structure and a cooking chamber.

The utility model provides a door body structure, comprising:

the door main body comprises a frame and glass arranged on two sides of the frame, and a closed space is formed between the glass and the frame; and

The supercharging device is arranged in the closed space and is provided with an air outlet communicated with the closed space and an air inlet communicated with the outside.

So set up, when the pressure in two glass outsides changes, through supercharging device's setting, can be to the pressure increase in the enclosure space to change the pressure differential that two glasses received, avoid bursting because the pressure differential is too big causes glass.

In one embodiment, a first pressure sensor is disposed within the enclosed space.

So configured, the first pressure sensor may be configured to detect pressure within the enclosed space.

In one embodiment, the pressurizing device is an air pump.

In one embodiment, the glass comprises a first glass and a second glass;

and a handle is arranged on the second glass.

In one embodiment, the frame comprises a frame body and a fixed seat protruding from the inner side of the frame body;

and the second glass is provided with an avoidance hole, and the handle passes through the avoidance hole and is fixedly arranged on the fixing seat.

The utility model also provides a cooking chamber comprising:

a cooking chamber body having a cooking cavity; and

the door structure according to any of the above embodiments, wherein the door structure is movably connected to the cooking box body.

In one embodiment, a second pressure sensor is disposed within the cooking chamber.

In one embodiment, the cooking box body comprises a base, a pot body and a cover body, wherein the base is movably arranged in the cooking cavity, the pot body is arranged on the base, and the cover body is detachably covered on the pot body.

In one embodiment, the cooking chamber further comprises a rail disposed within the cooking cavity, and the base is slidably disposed on the rail.

Compared with the prior art, the door body structure in the application can adjust the pressure in the closed space through the setting of the supercharging device to change the change of the pressure difference of the two sides of the glass in the door body structure, so that the pressure difference of the two sides of the glass in the door body structure is always equal to or less than the limit safety pressure difference, and the problem that the door body structure bursts when being impacted by pressure can be effectively avoided.

Drawings

FIG. 1 is a schematic view of a cooking chamber of the present application;

FIG. 2 is a schematic cross-sectional view of the cooking chamber of the present application;

fig. 3 is an exploded view of the cooking chamber of the present application.

Reference numerals: 10. a door body structure; 11. a frame; 111. a frame body; 112. a fixing seat; 121. a first glass; 122. a second glass; 123. avoidance holes; 13. a handle; 14. an air pump; 141. an air inlet; 142. an air outlet; 21. a cooking box body; 211. a cooking cavity; 22. a base; 23. a pot body; 231. a heating chamber; 24. a cover body; 25. and a guide rail.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It is noted that when an element is referred to as being "mounted to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "or/and" as used herein includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 3, the present utility model provides a door structure applied to a cavity where high pressure may exist, such as a cooking tank, for a cover.

For ease of understanding, the door structure will be described below with reference to a cooking box. The cooking box comprises a cooking box body 21 and a door body structure 10, wherein the cooking box body 21 comprises a cooking cavity 211, and the door body structure 10 is movably connected with the cooking box body 21 to open or close the cooking cavity 211.

The door body structure 10 includes a door body and a pressurizing device provided in the door body. The door body comprises a frame 11 and glass arranged on two sides of the frame 11, and the glass and the frame enclose a closed space. That is, the door body has a double-glass structure, and two glasses and the frame 11 enclose a closed space together. The glass and the frame 11 may be fixed by adhesion, or may be fixed by other means. It should be noted that the closed space refers to a closed cavity, and the pressure of the closed space gradually increases when the pressure is increased.

The supercharging device is arranged in the closed space, is provided with an air outlet 142 communicated with the closed space and an air inlet 141 communicated with the outside, and is used for adjusting the pressure of the closed space. Specifically, when it is desired to increase the pressure within the enclosed space, the pressurizing means will draw gas from the air through the gas inlet and force the gas into the enclosed space through the gas outlet to increase the pressure within the enclosed space. So that the pressure difference across the glass can be adjusted. The pressure relief holes (not shown) in the frame may also be used when it is desired to relieve the pressure in the enclosure to atmospheric pressure. Therefore, the pressure in the closed space can be dynamically adjusted through the arrangement of the pressurizing device, and then the pressure difference at two sides of the glass can be changed. It will be appreciated that the air inlet may be provided in the frame 11 such that the air inlet 141 is not in communication with the air outlet 142 when the supercharging device is not activated and such that the air inlet 141 is in communication with the air outlet 142 when the supercharging device is activated.

Specifically, the pressurizing device is an air pump 14, and the air pump can realize the pressurization of the enclosed space so as to reach the preset pressure in the enclosed space, and the pressure difference at two sides of the glass is regulated within a certain range so as to protect the glass. The air pump 14 may be a high pressure air pump, the air pump 14 being controlled to pressurize the enclosed space. And the structure for controlling the air pump 14 is not limited herein.

In order to be able to know the pressure state of the enclosed space, a first pressure sensor (not shown) is provided in the enclosed space, which can be connected to the pressurizing means in order to be able to control the pressurizing means in dependence on the pressure measured by the first pressure sensor. It will be appreciated by those skilled in the relevant art that the first pressure sensor may be communicatively and electrically connected to the pressurizing means or the air pump via a circuit board or chip.

Referring to fig. 1 to 3, the glass includes a first glass 121 and a second glass 122, and a handle 13 is provided on the second glass 122. Specifically, when the door structure 10 is applied to the cooking chamber, the door structure 10 is used for closing the cooking chamber 211 of the cooking chamber, the first glass 121 in the door structure 10 is glass close to the cooking chamber 211, i.e. inner glass, and the second glass 122 in the door structure 10 is glass far from the cooking chamber 211, i.e. outer glass. A handle 13 is provided on the outer glass to facilitate the user's grip of the handle 13 to apply force to rotate the door body structure 10.

For better fixed handle 13, frame 11 includes support body 111 and the fixing base 112 that establishes from the inboard protrusion of support body 111, and second glass 122 is equipped with dodges the hole 123, and handle 13 passes dodges the hole 123 and sets firmly in fixing base 112, through the fixed connection between handle 13 and the fixing base 112, avoids handle 13 and second glass 122 lug connection.

In the present embodiment, the number of glasses in the door main body is two, that is, the first glass 121 and the second glass 122, and the first glass 121 and the second glass 122 are made of the same structure, that is, have the same structural characteristics, that is, the first glass and the second glass are both common glasses, or the first glass and the second glass are both tempered glasses. Thus, both glasses have the same characteristics, i.e. the pressure difference that both glasses can withstand is the same. It is understood that in other embodiments, the two pieces of glass may be two pieces of different materials, for example, the first piece of glass is a common glass and the second piece of glass is a tempered glass.

The door structure 10 of the present application can be applied to a cooking box. The cooking box comprises a cooking box body 21 and the door body structure 10, wherein the cooking box body 21 is provided with a cooking cavity 211, and the door body structure 10 can be movably connected with the cooking box body 21 for opening or closing the cooking cavity 211. It will be appreciated by those skilled in the relevant art that when the door structure 10 is applied to the cooking enclosure body 21, the second glass 122 is positioned on the outside to form an outer glass for the convenience of the user to operate the handle 13. I.e. the first glass 121 is located on the side close to the cooking cavity 211 and the second glass 122 is located on the side remote from the cooking cavity 211.

Specifically, a second pressure sensor (not shown) is provided in the cooking cavity 211 for monitoring the pressure in the cooking cavity 211 in real time. In order to prevent the pressure difference across the first glass 121 or the second glass 122 from being excessively large when the cooking chamber is in use, the glass from exploding, and thus, the first glass or the second glass can be prevented from exploding by controlling the pressure difference across the glass. The second pressure sensor is connected to the pressurizing device so as to control the pressurizing device according to the pressure measured by the second pressure sensor. It will be appreciated by those skilled in the relevant art that the second pressure sensor may be communicatively and electrically coupled to the pressurizing device or air pump 14 by way of a circuit board.

Further, the pressure difference across the first glass 121 is the difference between the pressure in the cooking cavity 211 and the pressure in the enclosed space, and when the pressure in the cooking cavity 211 increases, the pressure in the enclosed space remains unchanged, causing the pressure difference across the first glass 121 to increase, and when the pressure difference across the first glass 121 is greater than the threshold value to which the glass is subjected, causing the first glass 121 to be crushed. Similarly, the pressure difference across the second glass 122 is the difference between the pressure in the enclosed space and the atmospheric pressure, which when the pressure in the enclosed space changes, causes the pressure difference across the second glass 122 to change. When the pressure of the closed space is excessively changed, the second glass 122 may be crushed.

Referring to fig. 2 and 3, the cooking box of the present application includes a base 22, a pot 23, and a cover 24, wherein the base 22 is movably disposed in the cooking cavity 211, the pot 23 is disposed on the base 22, and the cover 24 is detachably disposed on the pot 23. The pot body 23 and the cover body 24 enclose a heating chamber 231 for cooking food, and the pot body 23 may be a pressure cooker or a pressure cooker so that the heating chamber 231 in the pot body 23 forms a high pressure space when cooking. However, when the heating chamber 231 in the pot 23 leaks, high-pressure gas may enter the cooking chamber, causing the pressure in the cooking chamber to instantaneously increase, thereby causing the pressure on one side of the first glass 121 to increase. If the pressure in the enclosed space is unchanged, the pressure difference between the two sides of the first glass 121 is increased instantaneously, and when the pressure difference is larger than the pressure difference born by the first glass 121, the first glass 121 bursts.

The pot body 23 is arranged in the base 22, and the base 22 is movably arranged in the cooking cavity so as to drive the base 22 to move towards the direction of the door body structure when food materials are taken out or put in, so as to be close to the cavity opening of the cooking cavity, and the food materials can be taken out or put in conveniently and enter the pot body 23. During cooking, the drive base 22 is moved away from the door structure to be away from the mouth of the cooking cavity.

Specifically, referring to the figure, the cooking box body further includes a guide rail 25 disposed in the cooking cavity, and the base 22 is slidably disposed on the guide rail 25, so that the base 22 is guided to move along the laying direction of the guide rail during the sliding process of the base 22, thereby facilitating the operation of the user.

The application also provides a control method of the pressure of the cooking box, which can avoid explosion of the glass of the door body when the pressure in the cooking cavity is abnormal, and improve the safety performance of the cooking box. The control method of the pressure of the cooking box is applied to the cooking box. The pressure in the cavity is set to be P1, the pressure in the closed space is set to be P2, the limit safety pressure difference of the first glass 121 is Δp3, the limit safety pressure difference of the second glass 122 is set to be Δp4, the pressure difference of the first glass 121 is set to be Δp1, and the pressure difference of the second glass 122 is set to be Δp2. Specifically, the pressure control method of the cooking chamber comprises the steps of:

s1, detecting the pressure P1 in the cooking cavity in real time and detecting the pressure P2 of the closed space in real time;

s2, judging whether the pressure difference delta P1 at two sides of the first glass 121 is smaller than or equal to K delta P3, wherein delta P1= |P1-P2|, and K is a constant smaller than 1;

when delta P1 is less than or equal to K delta P3, the supercharging device is not started;

when delta P1 is more than K delta P3, starting the pressurizing device to pressurize the enclosed space, and detecting the pressure P2 of the enclosed space;

stopping the pressurizing means when the pressure P2 satisfies DeltaP 1 < DeltaP 3 and the pressure difference DeltaP 2 < DeltaP 4 across the second glass 122;

wherein Δp2= |p2-p|; Δp3 is the limit safety pressure difference and P is the atmospheric pressure.

In one embodiment, K satisfies: k is more than or equal to 0.5 and less than or equal to 0.8.

In step S1, the pressure P1 in the cooking cavity may be monitored in real time using the second pressure sensor, and the pressure P2 in the closed space may be monitored in real time using the first pressure sensor.

In step S2, it is required to determine whether the pressure difference between the two sides of the first glass 121 is abnormal, that is, whether the pressure difference Δp1 between the two sides of the first glass 121 is less than or equal to K Δp3, where Δp1= |p1-p2|, K is a constant less than 1, so as to distinguish whether the pressure in the cooking cavity is abnormal.

When the pressure in the cooking cavity is in a normal state, namely delta P1 is less than or equal to K delta P3, the pressurizing device is not started, namely the air pump is not started, and as delta P3 is the maximum pressure difference which can be born by the glass, when delta P1 is less than or equal to K delta P3, the first glass 121 cannot burst due to the fact that the pressure difference is large. Similarly, the pressure difference Δp2=0 across the second glass 122, since the outside of the second glass 122 is at atmospheric pressure, and when the pressurizing means is not activated, the pressure in the enclosed space is also at atmospheric pressure, and the second glass 122 will not burst.

When the pressure in the cooking cavity is in an abnormal state, namely delta P1 is larger than K delta P3, the supercharging device is started. At this time, since the pressure in the cooking cavity is abnormal, that is, the pressure in the cooking cavity rises, the pressurizing device is started to pressurize the enclosed space, that is, the pressure in the enclosed space also rises. The pressure value in the current state, that is, the pressure in the cooking cavity is P1 and the pressure in the closed space is P2, can be known through the first pressure sensor and the second pressure sensor, and for the first glass 121, the requirement of Δp1= |p1-p2|is less than or equal to Δp3, and at this time, the first glass 121 cannot burst. For the second glass 122, since the pressure of the closed space rises while the atmospheric pressure on the other side is unchanged, the pressure in the closed space needs to satisfy: and delta P2 is less than or equal to delta P4, and the second glass 122 does not burst at this time.

In other words, the pressurizing device needs to pressurize the inside of the closed space to P2, and when P2 satisfies Δp1= |p1-p2|Δp3 and Δp2+|Δp4, the pressurizing is stopped, and at this time, the protection of the first glass 121 and the second glass 122 can be simultaneously performed.

For better protection of the glass, K may be 0.5 to 0.8 in the present application. On the one hand, in order to avoid frequent starting of the supercharging device caused by too small K value, the supercharging device is started even in a normal state; on the other hand, the problem that the supercharging device is not started up too much due to the fact that the K value is too large is avoided.

It should be noted that, in other embodiments of the present application, the first glass 121 and the second glass 122 are made of the same material, that is, the first glass 121 and the second glass 122 have the same limit safety pressure difference, that is, Δp3= Δp4.

To more clearly illustrate the principle of supercharging by the supercharging device in the present application, the first glass 121 and the second glass 122 will be made of the same material, i.e. the first glass 121 and the second glass 122 have the same extreme safety pressure difference. The pressure in the chamber is set to be P1, the pressure in the closed space is set to be P2, the limit safety pressure difference between the first glass 121 and the second glass 122 is set to be Δp3, the limit safety pressure difference between the second glass 122 is set to be Δp4, the pressure difference between the first glass 121 is set to be Δp1, the pressure difference between the second glass 122 is set to be Δp2, the atmospheric pressure is set to be P, and the pressure in the closed chamber when the pressure is increased is set to be P (the pressure in the closed chamber is normalized to be equal to the atmospheric pressure). Specifically, the pressure control method of the cooking chamber comprises the steps of:

s1, detecting the pressure P1 in a cooking cavity in real time;

s2, judging whether the pressure difference delta P1 at two sides of the first glass 121 is smaller than or equal to K delta P3, wherein delta P1= |P1-P|, and K is a constant smaller than 1;

when delta P1 is less than or equal to K delta P3, the supercharging device is not started;

when delta P1 is more than K delta P3, starting the pressurizing device to pressurize the enclosed space, and detecting the pressure P2 of the enclosed space;

stopping the pressurizing device when the pressure P2 satisfies ΔP1= |P1-P2|ΔP3 and the pressure difference ΔP2 across the second glass 122 is less than or equal to ΔP4;

wherein Δp2= |p2-p|; Δp3 is the limit safety pressure difference and P is the atmospheric pressure.

When the pressure in the cooking cavity is in an abnormal state, namely delta P1 is larger than K delta P3, the pressurizing device is started to pressurize the closed space. At this time, since the pressure in the cooking cavity is abnormal, that is, the pressure in the cooking cavity rises, the pressurizing device is started to pressurize the enclosed space, that is, the pressure in the enclosed space also rises, and the pressure in the enclosed space is P2. The first glass 121 needs to satisfy Δp1= |p1-p2|Δp3, and at this time, the first glass 121 does not burst. For the second glass 122, since the pressure of the closed space rises while the atmospheric pressure on the other side is unchanged, the pressure in the closed space needs to satisfy: and Δp2.ltoreq.Δp3, then the second glass 122 will not burst at this time.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (10)

1. A door structure, comprising:

the door main body comprises a frame and glass arranged on two sides of the frame, wherein a closed space is formed between the glass and the frame; and

The supercharging device is arranged in the closed space and is provided with an air outlet communicated with the closed space and an air inlet communicated with the outside.

2. The door structure of claim 1, wherein a first pressure sensor is disposed within the enclosed space.

3. The door structure of claim 2, wherein the pressurizing means is an air pump.

4. The door structure of claim 1, wherein the glass comprises opposed first and second glass;

and a handle is arranged on the second glass.

5. The door structure of claim 4, wherein the first glass and the second glass are made of the same material.

6. The door structure according to claim 4, wherein the frame comprises a frame body and a fixing seat protruding from an inner side of the frame body;

and the second glass is provided with an avoidance hole, and the handle passes through the avoidance hole and is fixedly arranged on the fixing seat.

7. A cooking enclosure comprising:

a cooking chamber body having a cooking cavity; and

the door structure of any one of claims 1 to 6, being movably connected to the cooking enclosure body.

8. The cooking chamber of claim 7, wherein a second pressure sensor is disposed within the cooking chamber.

9. The cooking chamber of claim 7, further comprising a base movably disposed within the cooking cavity, a pan disposed on the base, and a cover detachably disposed on the pan.

10. The cooking chamber of claim 9, wherein the cooking chamber body further comprises a rail disposed within the cooking chamber, the base being slidably disposed on the rail.