CN217592795U

CN217592795U - Dish washing machine

Info

Publication number: CN217592795U
Application number: CN202221250574.0U
Authority: CN
Inventors: 赵雪刚; 王艳; 徐玮; 龙超华; 梁瑞莲
Original assignee: Ningbo Qingmei Electrical Technology Co ltd
Current assignee: Ningbo Qingmei Electrical Technology Co ltd; Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2022-05-23
Filing date: 2022-05-23
Publication date: 2022-10-18
Anticipated expiration: 2032-05-23

Abstract

The application relates to the technical field of kitchen appliances, and provides a dishwasher, wherein a machine body (10) is formed by extending in the vertical direction, and the machine body (10) is provided with an open side; the door structure (20) is rotatably connected to the open side of the machine body (10), the lower end of the door structure (20) is provided with an extension part (211), and the extension part (211) is positioned in the machine body (10) when the door structure (20) is closed and is arranged opposite to the inner wall of the machine body (10); the sealing structure (30) is connected to the extension part (211) and is used for sealing and abutting against the inner wall of the machine body (10) when the door structure (20) is closed. The application discloses a dishwasher, effectively seals up the gap between the lower sides of a machine body (10) and a door structure (20) through a sealing structure (30), and greatly reduces the risk that liquid flows out from the gap at a low level between the lower sides of the machine body (10) and the door structure (20) to pollute the external environment when the dishwasher is in a cleaning operation.

Description

Dish-washing machine

Technical Field

The application belongs to the technical field of kitchen appliances, and particularly relates to a dish washing machine.

Background

A dishwasher generally includes a body having an open side and a door structure rotatably coupled to the open side of the body, wherein the dishwasher can perform a washing operation on dishes placed in the body when the door structure is in a closed state. However, there is often a gap between the body and the door structure, and thus, when the dishwasher is in a washing operation, liquid is particularly liable to flow out from the gap between the body and the lower side of the door structure to contaminate an external environment, resulting in poor use experience of the dishwasher.

SUMMERY OF THE UTILITY MODEL

An object of this application is to provide a dish washer to there is the gap between the organism of solving current dish washer and the door structure, leads to liquid especially easily to flow and pollute the problem of external environment from the gap between the downside of organism and door structure.

In order to achieve the purpose, the technical scheme adopted by the application is as follows: a dishwasher, comprising:

a body formed to extend in an up-down direction, the body having an open side;

the door structure is rotatably connected to the open side of the machine body, the lower end of the door structure is provided with an extension part, and the extension part is positioned in the machine body when the door structure is closed and is arranged opposite to the inner wall of the machine body;

and the sealing structure is connected with the extension part and used for being in sealing and abutting joint with the inner wall of the machine body when the door structure is closed.

In one embodiment, the seal structure is provided on one side of the extension portion in the extending direction, or on one side of the extension portion in the thickness direction.

In one embodiment, the extension part is formed by extending inwards and downwards obliquely relative to the door body of the door structure, and the side surface of the extension part, which is far away from the inner wall of the machine body, forms a water return inclined surface.

In one embodiment, the inner wall of the body is provided with a curved sealing surface disposed opposite to the extending portion when the door structure is closed, and the sealing structure is slidable relative to the curved sealing surface during the closing of the door structure and is in sealing abutment with the curved sealing surface when the door structure is closed.

In one embodiment, the sealing structure comprises a connecting piece and a sealing piece which are connected with each other, the connecting piece is arranged on the extending part, the sealing piece is arc-shaped, and the end side of the sealing piece far away from the connecting piece is in sealing abutment with the inner wall of the machine body.

In one embodiment, the extension is provided with a coupling groove for mounting the coupling piece, the coupling piece sealingly abutting a groove wall of the coupling groove.

In one embodiment, two opposite sides of the connecting piece are respectively provided with a sealing block in a protruding mode, the sealing blocks are formed in an inclined mode relative to the connecting piece towards one side close to the sealing piece, and the sealing blocks are used for being in sealing abutting connection with corresponding groove walls of the connecting grooves.

In one embodiment, a plurality of sealing blocks are arranged at intervals along the axial direction of each of two opposite sides of the connecting piece; the spread groove is equipped with a plurality of spacing groove sections along its groove depth direction, and is a plurality of spacing groove section is used for spacing installation respectively to follow the axial interval of connecting piece sets up a plurality of sealed piece.

In one embodiment, the end of the connecting piece close to the sealing piece is convexly provided with a stop block towards one side, and the stop block is in sealing stop with the notch edge of the connecting groove.

In one embodiment, the door structure is a single door.

In one embodiment, the door structure is a multi-door, the door structure comprises a plurality of door bodies which are arranged in sequence along the vertical direction, and the rotation axis of the door bodies is perpendicular to the vertical direction, the lower end of the door body positioned at the lowest side is provided with the extending part, and one of the adjacent door bodies is provided with a blocking structure for being in sealing and abutting joint with the other door body.

The application provides beneficial effect lies in:

according to the dishwasher provided by the embodiment of the application, the door structure is rotatably connected to the open side of the dishwasher body, so that the installation position of the door structure is stabilized; through connecting seal structure in the extension that the lower extreme of door structure set up to sealed butt in the inner wall of organism when the door structure is closed, realize carrying out the purpose of shutoff effectively through seal structure gap between the downside of organism and door structure, so, when dish washer is in the washing operation, greatly reduce the risk that liquid flows and pollutes the external environment from the low level gap between the downside of organism and door structure, improve the use experience of dish washer effectively.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a first schematic view of a dishwasher according to a first embodiment of the present disclosure, wherein a door structure is in a closed state;

FIG. 2 isbase:Sub>A cross-sectional view taken along A-A as provided in FIG. 1;

FIG. 3 is an enlarged schematic view of region C provided in FIG. 2;

FIG. 4 is an enlarged schematic view of region D provided in FIG. 2;

FIG. 5 is a second schematic view of a dishwasher in accordance with an embodiment of the present invention, wherein the door structure is in an open state;

FIG. 6 is a cross-sectional view taken along line B-B as provided in FIG. 5;

fig. 7 is an enlarged schematic view of region E provided in fig. 6.

The reference numbers indicate:

10-body; 11-sealing a curved surface; 20-a door structure; 21-a door body; 211-an extension; 2111-water return slope; 2112-connecting groove; 21121-spacing groove section; 212-a blocking structure; 30-a sealing structure; 31-a connector; 311-a sealing block; 312-a stop block; 32-sealing member.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of and not restrictive on the broad application.

In the description of the present application, it is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings, which is for convenience and simplicity of description, and does not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, is not to be considered as limiting.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

Specific implementations of the present application are described in more detail below with reference to specific embodiments:

example one

Referring to fig. 2, 3, 6 and 7, an embodiment of the present application provides a dishwasher including a body 10, a door structure 20 and a sealing structure 30.

Wherein, the body 10 is formed by extending along the up and down direction, the body 10 has an open side; the door structure 20 is rotatably connected to the open side of the machine body 10, the lower end of the door structure 20 is provided with an extension part 211, and the extension part 211 is positioned in the machine body 10 when the door structure 20 is closed and is opposite to the inner wall of the machine body 10; the sealing structure 30 is connected to the extension 211 and serves to seal against the inner wall of the body 10 when the door structure 20 is closed.

Based on this, the installation position of the door structure 20 is stabilized by rotatably coupling the door structure 20 to the open side of the body 10; through connecting seal structure 30 in the extension 211 that the lower extreme of door structure 20 set up to sealed butt in the inner wall of organism 10 when door structure 20 closes, and then can seal effectively through seal structure 30 gap between the downside of organism 10 and door structure 20, so, when dishwasher is in the washing operation, greatly reduce the risk that liquid flows out and pollutes the external environment from the low level gap between the downside of organism 10 and door structure 20, improve dishwasher's use experience effectively.

Based on this, by arranging the extension portion 211 to be located in the machine body 10 when the door structure 20 is closed, and connecting the sealing structure 30 to the extension portion 211, the extension portion 211 and the sealing structure 30 can be protected by the machine body 10, so that the risk that the sealing structure 30 is separated from the extension portion 211 under the action of external force can be greatly reduced, the reliability and stability of the sealing structure 30 connected to the extension portion 211 can be effectively guaranteed, and the usability of the sealing structure 30 can be effectively guaranteed; in addition, by accommodating the extension portion 211 and the sealing structure 30 inside the machine body 10 when the door structure 20 is closed, the overall appearance of the dishwasher is more attractive, and the use experience of the dishwasher is improved.

In summary, the dishwasher according to the embodiment of the present application stabilizes the installation position of the door structure 20 by rotatably coupling the door structure 20 to the open side of the machine body 10; through connecting seal structure 30 in the extension 211 that the lower extreme of door structure 20 set up to sealed butt in the inner wall of organism 10 when door structure 20 is closed, realize carrying out the purpose of shutoff effectively through seal structure 30 to the gap between the downside of organism 10 and door structure 20, so, when dishwasher is in the washing operation, greatly reduce liquid and flow out and pollute the risk of external environment from the low level gap between the downside of organism 10 and door structure 20, improve dishwasher's use experience effectively.

Referring to fig. 3, in the present embodiment, the sealing structure 30 is provided with an extending portion 211 at one side in the thickness direction.

Through adopting above-mentioned scheme, through setting up extension 211 in ascending one side of thickness direction with seal structure 30, with sealed butt in the side inner wall of organism 10 when door structure 20 closes, and then can seal effectively through seal structure 30 gap between the downside of organism 10 and door structure 20, so, when dishwasher is in the washing operation, greatly reduce the risk that liquid flows out and pollutes the external environment from the low level gap between the downside of organism 10 and door structure 20, improve dishwasher's use experience effectively.

Moreover, compared with the second embodiment, the present embodiment can effectively increase the space for the cleaning operation inside the machine body 10, so as to increase the capacity of the dishwasher for performing the cleaning operation once, thereby effectively improving the cleaning performance of the dishwasher; in addition, the impact force of the liquid flowing out through the gap between the extension portion 211 and the inner wall of the machine body 10 on the sealing structure 30 can be effectively reduced, so that the risk that the sealing structure 30 breaks away from the inner wall of the machine body 10 under the impact of the liquid is effectively reduced, the stability and the reliability of the sealing structure 30 in sealing and abutting connection with the inner wall of the machine body 10 are effectively guaranteed, and the sealing performance between the machine body 10 and the lower side of the door structure 20 is effectively guaranteed.

Referring to fig. 3, in the present embodiment, the extending portion 211 is formed by extending inward and downward relative to the door body 21 of the door structure 20, and a water return inclined surface 2111 is formed on a side of the extending portion 211 away from the inner wall of the machine body 10.

Through adopting above-mentioned scheme, extend and form extension 211 through the door body 21 inwards and downward sloping for door structure 20, and form return water inclined plane 2111 in the side that extension 211 deviates from organism 10 inner wall, therefore, when dishwasher is in the cleaning operation, can lead the bottom side that the foul solution behind the inside washing tableware of organism 10 flows back to organism 10 smoothly through return water inclined plane 2111, so as to do benefit to organism 10 and discharge the foul solution that flows back, can greatly reduce the risk of secondary pollution tableware because of the inside of foul solution untimely discharge organism 10, improve dishwasher cleaning operation's cleaning performance effectively.

Referring to fig. 3 and 7, in the present embodiment, the inner wall of the body 10 is provided with a curved sealing surface 11 opposite to the extending portion 211 when the door structure 20 is closed, and the sealing structure 30 can slide relative to the curved sealing surface 11 during the closing of the door structure 20 and is in sealing contact with the curved sealing surface 11 when the door structure 20 is closed.

Through adopting above-mentioned scheme, during control door structure 20 is closed, slide for sealed curved surface 11 through control seal structure 30, so that seal structure 30 takes place elastic deformation, until seal structure 30 seals butt in sealed curved surface 11 when door structure 20 closes, and then realize sealing the purpose through seal structure 30 to the gap between the inner wall of organism 10 and the downside of door structure 20, and then guarantee the sealing performance between the downside of organism 10 and door structure 20, thus, when dishwasher is in the washing operation, can greatly reduce liquid and flow out and pollute the risk of external environment from the gap between the downside of organism 10 and door structure 20, improve dishwasher's use experience effectively.

Accordingly, the sealing curved surface 11 disposed opposite to the extending portion 211 when the door structure 20 is closed is disposed on the inner wall of the machine body 10, so that the contact area between the sealing structure 30 and the inner wall of the machine body 10 can be effectively ensured, and thus, during the closing of the control door structure 20, the sealing curved surface 11 can be effectively ensured to reliably and stably abut against the sealing structure 30, and further, the sealing performance between the machine body 10 and the lower side of the door structure 20 can be effectively ensured.

Referring to fig. 3 and 7, in the present embodiment, the sealing structure 30 includes a connecting member 31 and a sealing member 32 connected to each other, the connecting member 31 is mounted on the extending portion 211, the sealing member 32 is arc-shaped, and an end side of the sealing member 32 far from the connecting member 31 is in sealing contact with an inner wall of the machine body 10.

By adopting the above scheme, the mounting position and the mounting state of the sealing structure 30 are stabilized by mounting the connecting piece 31 on the extension part 211; through being the arcuation with sealing member 32 setting, during control door structure 20 is closed, do benefit to that sealing structure 30 can slide for the inner wall of organism 10 smoothly under the guide of its cambered surface, still do benefit to and make sealing member 32 take place elastic deformation, and then do benefit to sealing member 32 and reliably, seal the butt in the inner wall of organism 10 steadily when door structure 20 is closed, and then do benefit to and realize reliably, seal the purpose steadily through sealing structure 30 to the gap between the downside of the inner wall of organism 10 and door structure 20, and then guarantee the sealing performance between the downside of organism 10 and door structure 20 more effectively.

Referring to fig. 3 and 7, in the present embodiment, the extending portion 211 is provided with a connecting groove 2112 for installing the connecting element 31, and the connecting element 31 is sealed and abutted against a groove wall of the connecting groove 2112.

By adopting the above-described scheme, the installation of the coupling member 31 is completed by inserting the control coupling member 31 into the coupling groove 2112, so that the installation position and the installation state of the seal structure 30 are stabilized; through setting up the sealed butt in the cell wall of connecting groove 2112 of connecting 31 to guarantee effectively that the compactness, the stability of being connected between connecting 31 and the connecting groove 2112, guarantee effectively that connecting 31 and the sealing performance of connecting groove 2112, and then can reduce the risk that liquid flows out from the gap between connecting 31 and the connecting groove 2112 effectively, further guarantee the sealing performance between the downside of organism 10 and door structure 20.

Referring to fig. 3 and 7, in the present embodiment, two opposite sides of the connecting member 31 are respectively provided with a sealing block 311 in a protruding manner, the sealing block 311 is formed to be inclined toward a side close to the sealing member 32 relative to the connecting member 31, and the sealing block 311 is used for sealing and abutting against a corresponding groove wall of the connecting groove 2112.

By adopting the above scheme, during the period of inserting the connecting piece 31 into the connecting groove 2112 to install the connecting piece 31, the sealing block 311 is elastically deformed to reliably and stably abut against the corresponding groove wall of the connecting groove 2112, thereby further ensuring the tightness and stability of the connection between the connecting piece 31 and the connecting groove 2112 and further ensuring the sealing performance between the connecting piece 31 and the connecting groove 2112; by providing the sealing block 311 to be formed obliquely with respect to the connection member 31 toward the side close to the sealing ring, it is facilitated to guide the connection member 31 to be smoothly inserted into the connection groove 2112 by the inclined surface of the sealing block 311 to achieve the installation of the connection member 31.

Referring to fig. 3 and 7, in the present embodiment, a plurality of sealing blocks 311 are disposed at intervals along the axial direction on two opposite sides of the connecting member 31; the connecting groove 2112 is provided with a plurality of limiting groove sections 21121 along the depth direction of the groove, and the limiting groove sections 21121 are respectively used for limiting and mounting a plurality of sealing blocks 311 arranged along the axial direction of the connecting piece 31 at intervals.

By adopting the above scheme, a plurality of sealing blocks 311 are arranged at intervals along the axial direction of the connecting piece 31 on the two opposite sides thereof to be sealed and abutted against the groove walls of the connecting grooves 2112, so that multiple sealing between the connecting piece 31 and the connecting grooves 2112 can be realized, the tightness and stability of the connection between the connecting piece 31 and the connecting grooves 2112 are further ensured, and the sealing performance between the connecting piece 31 and the connecting grooves 2112 is further ensured; by arranging the plurality of limiting groove sections 21121 on the connecting groove 2112 along the groove depth direction thereof to stabilize the mounting position of the corresponding sealing block 311 through the limiting groove sections 21121, the risk that the connecting piece 31 is separated from the connecting groove 2112 can be effectively reduced, and the stability and reliability of the mounting place of the connecting piece 31 can be effectively guaranteed.

Referring to fig. 3 and 7, in the present embodiment, a stop block 312 is formed by protruding from an end of the connecting member 31 close to the sealing member 32 to one side, and the stop block 312 is sealed and stopped at the notch edge of the connecting groove 2112.

By adopting the above scheme, the notch edge of the connecting groove 2112 is sealed and stopped by the stop block 312 to seal the notch of the connecting groove 2112, so that the risk of liquid flowing out from the gap between the connecting piece 31 and the connecting groove 2112 is further reduced, and the sealing performance between the connecting piece 31 and the connecting groove 2112 is further ensured.

Referring to fig. 1 and 5, in the present embodiment, the door structure 20 is a multi-door, the door structure 20 includes a plurality of door bodies 21 that are sequentially disposed along the vertical direction and have rotation axes perpendicular to the vertical direction, referring to fig. 2 and 3, the lower end of the door body 21 located at the lowest side is provided with an extending portion 211, referring to fig. 4 and 7, one of the adjacent door bodies 21 is provided with a blocking structure 212 for sealing and abutting against the other door body 21.

By adopting the scheme, the pass-gate structure 20 is provided with a plurality of gates, when the dish-washing machine is provided with a plurality of compartments, the corresponding arrangement of the gate bodies 21 in each compartment is facilitated, and the gate bodies 21 of each compartment are respectively opened and closed, so that the opening and closing of each compartment are realized, the convenience for taking and placing tableware is improved, the user experience of the dish-washing machine is effectively improved, and the use performance of the dish-washing machine is effectively improved; the extension part 211 is arranged at the lower end of the door body 21 at the lowest side, so that the door body 21 at the lowest side is in sealing and abutting connection with the inner wall of the machine body 10 when being closed, and then a gap between the machine body 10 and the lower end of the door body 21 at the lowest side can be effectively sealed through the sealing structure 30, therefore, when the dishwasher is in cleaning operation, the risk that liquid flows out from the gap between the machine body 10 and the lower end of the door body 21 at the lowest side to pollute the external environment is greatly reduced, and the use experience of the dishwasher is effectively improved; by arranging the blocking structure 212 for sealing and abutting against the other door body 21 in the adjacent door bodies 21, when the adjacent door bodies 21 are closed, the gap between the adjacent door bodies 21 can be effectively sealed through the blocking structure 212, so that the sealing performance between the adjacent door bodies 21 can be effectively improved, and thus, when the dishwasher is in a cleaning operation, the risk of liquid and the like spraying out from the gap between the adjacent door bodies 21 can be greatly reduced, and the service performance of the door structure 20 can be greatly ensured.

Example two

The difference between the present embodiment and the first embodiment is:

referring to fig. 2 and 3, in the present embodiment, the sealing structure 30 is disposed on one side of the extending portion 211 in the extending direction.

Through adopting above-mentioned scheme, through setting up extension 211 in the ascending one side of extending direction with seal structure 30, with sealed butt in the lower inner wall of organism 10 when door structure 20 closes, and then also can seal effectively through seal structure 30 to the gap between the downside of organism 10 and door structure 20, so, when dishwasher is in the washing operation, greatly reduce the risk that liquid flows out and pollutes the external environment from the low level gap between the downside of organism 10 and door structure 20, improve dishwasher's use experience effectively.

EXAMPLE III

The difference between this embodiment and the first embodiment is:

referring to fig. 1 and 5, in the present embodiment, the door structure 20 is a single door.

By adopting the scheme, the opening control of the door structure 20 is very simple, the convenience of the use of the dishwasher is greatly improved, and the user experience of the dishwasher is effectively guaranteed; in addition, the structure of the door structure 20 is very simple, which facilitates the completion of the production of the door structure 20 and effectively reduces the production cost of the door structure 20.

The present application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles and spirit of the invention.

Claims

1. A dishwasher, comprising:

a body (10), wherein the body (10) is formed to extend in the vertical direction, and the body (10) is provided with an open side;

a door structure (20) rotatably connected to the open side of the body (10), the door structure (20) having an extension (211) at a lower end thereof, the extension (211) being located inside the body (10) when the door structure (20) is closed and being disposed opposite to an inner wall of the body (10);

and the sealing structure (30) is connected to the extension part (211) and is used for being in sealing contact with the inner wall of the machine body (10) when the door structure (20) is closed.

2. The dishwasher of claim 1, characterized in that the sealing structure (30) is provided on one side of the extension (211) in the extension direction or on one side of the extension (211) in the thickness direction.

3. The dishwasher according to claim 1, characterized in that the extension (211) is formed by extending inwardly and downwardly inclined relative to the door body (21) of the door structure (20), and the side of the extension (211) facing away from the inner wall of the machine body (10) forms a water return slope (2111).

4. The dishwasher according to claim 1, characterized in that the inner wall of the machine body (10) is provided with a curved sealing surface (11) arranged opposite the extension (211) when the door structure (20) is closed, the sealing structure (30) being slidable relative to the curved sealing surface (11) during closing of the door structure (20) and sealing against the curved sealing surface (11) when the door structure (20) is closed.

5. A dishwasher according to claim 1, characterized in that the sealing structure (30) comprises a connecting piece (31) and a sealing piece (32) connected to each other, the connecting piece (31) being mounted to the extension (211), the sealing piece (32) being arc-shaped, the end side of the sealing piece (32) remote from the connecting piece (31) sealingly abutting against the inner wall of the machine body (10).

6. A dishwasher according to claim 5, characterized in that the extension (211) is provided with a coupling slot (2112) for mounting the coupling piece (31), the coupling piece (31) sealingly abutting a slot wall of the coupling slot (2112).

7. The dishwasher of claim 6, characterized in that opposite sides of the connecting piece (31) are each convexly provided with a sealing block (311), the sealing blocks (311) are obliquely shaped relative to the connecting piece (31) to a side close to the sealing element (32), and the sealing blocks (311) are used for sealing abutment against corresponding groove walls of the connecting groove (2112).

8. The dishwasher of claim 7, characterized in that opposite sides of the connecting piece (31) are each provided with a plurality of said sealing blocks (311) at intervals along the axial direction thereof;

the connecting groove (2112) is provided with a plurality of limiting groove sections (21121) along the depth direction of the connecting groove, and the limiting groove sections (21121) are used for limiting and mounting a plurality of sealing blocks (311) which are arranged along the axial direction of the connecting piece (31).

9. The dishwasher of claim 6, characterized in that the end of the connecting piece (31) close to the seal (32) is provided with a stop (312) protruding to one side, the stop (312) sealingly stopping against the notch edge of the connecting groove (2112).

10. The dishwasher according to any one of claims 1 to 9, characterized in that the door structure (20) is a single-opening door;

or the door structure (20) is a multi-door, the door structure (20) comprises a plurality of door bodies (21) which are sequentially arranged along the vertical direction, the rotation axis of each door body (21) is perpendicular to the vertical direction, the extending part (211) is arranged at the lower end of the door body (21) positioned at the lowest side, and a blocking structure (212) used for being in sealing and abutting joint with the other door body (21) is arranged in one of the adjacent door bodies (21).