CN107960965B

CN107960965B - Drawer type dish washer

Info

Publication number: CN107960965B
Application number: CN201711332309.0A
Authority: CN
Inventors: 熊卫华; 关庆文; 曾宝平
Original assignee: Midea Group Co Ltd; Foshan Shunde Midea Washing Appliances Manufacturing Co Ltd
Current assignee: Wuhu Midea Smart Kitchen Appliance Manufacturing Co Ltd
Priority date: 2017-12-13
Filing date: 2017-12-13
Publication date: 2020-11-24
Anticipated expiration: 2037-12-13
Also published as: CN107960965A

Abstract

In the drawer type dishwasher disclosed by the invention, a cover plate is movably arranged in an inner container, the cover plate is provided with a matching end matched with a connecting end, the cover plate can move between a first position and a second position relative to the inner container, when the cover plate is positioned at the first position, the matching end is matched with the connecting end and covers an opening of a cavity, when the cover plate is positioned at the second position, the matching end is separated from the opening of the cavity, a sealing ring is fixedly connected with the matching end, the sealing ring comprises a ring body and a plurality of sealing heads extending outwards from one side of the ring body, each sealing head is annular, the plurality of sealing heads comprise at least one first sealing head and at least two second sealing heads, the at least two second sealing heads surround the at least one first sealing head, when the cover plate is positioned at the first position, the sealing ring supports against the inner surface of the cavity through the at least one first sealing head and the at least two second sealing heads to support against the connecting end so as, when the cover plate is located at the second position, the sealing ring is separated from the connecting end.

Description

Drawer type dish washer

Technical Field

The invention relates to the field of household appliances, in particular to a drawer type dish washing machine.

Background

In the related art, a top cover plate of the drawer type dishwasher covers and seals the inner container during operation of the drawer type dishwasher, and the top cover plate is separated from the inner container to take and place tableware after the operation of the drawer type dishwasher is finished. However, the top cover plate and the inner container of the drawer type dishwasher have poor sealing effect, which easily causes the dishwasher to malfunction during the operation process, even causes the failure of the dishwasher.

Disclosure of Invention

The invention provides a drawer type dish washing machine.

The drawer type dishwasher of the embodiment of the invention comprises an inner container, a cover plate and a sealing ring, wherein the inner container is provided with a cavity, the inner container comprises a connecting end which is bent upwards and outwards from an opening of the cavity, the cover plate is movably arranged on the inner container, the cover plate is provided with a matching end matched with the connecting end, the cover plate can move between a first position and a second position relative to the inner container, when the cover plate is positioned at the first position, the matching end is matched with the connecting end and covers the opening of the cavity, when the cover plate is positioned at the second position, the matching end is separated from the opening of the cavity, the sealing ring is fixedly connected with the matching end, the sealing ring comprises a ring body and a plurality of sealing heads which extend outwards from one side of the ring body, each sealing head is annular, and the plurality of sealing heads comprise at least one first sealing head and at least two second sealing heads, the at least two second sealing heads surround the at least one first sealing head, when the cover plate is located at the first position, the sealing ring abuts against the inner surface of the cavity through the at least one first sealing head and abuts against the connecting end through the at least two second sealing heads to seal a gap between the mating end and the connecting end, and when the cover plate is located at the second position, the sealing ring is separated from the connecting end.

In the drawer type dish washing machine, the at least one first sealing head abuts against the inner surface of the cavity, the at least two second sealing heads abut against the connecting end, the plurality of sealing heads are annularly abutted at different positions, and the sealing mode of the gap between the sealing ring and the connecting end is multi-stage annular sealing, so that the matching end and the connecting end matched sealing effect can be improved, the reliability of the gap between the sealing ring and the connecting end can be improved, the stability of the drawer type dish washing machine in the operation process can be ensured, and the drawer type dish washing machine is not easy to fail due to the poor sealing effect of the cover plate and the inner container.

In some embodiments, the mating end defines a plurality of openings spaced apart from each other, the sealing ring includes a plurality of fixing heads extending outward from another side of the ring body, the fixing heads are respectively fixed in the openings to allow the ring body to cover the openings, and the sealing heads are located outside the openings and surround the openings.

In some embodiments, the plurality of fastening heads are respectively fastened in the plurality of tunnels by an encapsulation process.

In some embodiments, the mating end is formed with a ring-shaped protrusion, and the protrusion defines the plurality of holes, which are spaced apart along a circumferential direction of the protrusion.

In some embodiments, the first sealing head has a triangular cross-section, the second sealing head has a triangular cross-section, and when the cover plate is located at the first position, the first sealing head abuts against the inner surface of the chamber through the sharp corner of the first sealing head, and the second sealing head abuts against the connecting end through the sharp corner of the second sealing head.

In some embodiments, the connecting end includes an annular connecting curved surface and an annular inclined surface, the connecting curved surface connects the inclined surface and the inner surface of the chamber, the at least two second sealing heads include a third sealing head and a fourth sealing head, the fourth sealing head surrounds the third sealing head, when the cover plate is located at the first position, the third sealing head abuts against the connecting curved surface, and the fourth sealing head abuts against the inclined surface.

In certain embodiments, the cover plate is a stainless steel cover plate, or the cover plate is a plastic cover plate.

In some embodiments, the drawer dishwasher includes a driving device and a support rod assembly movably installed outside the inner container, the driving device is connected to the cover plate through the support rod assembly, and the driving device is configured to drive the support rod assembly to move back and forth in a vertical direction relative to the inner container so as to drive the cover plate to move between the first position and the second position relative to the inner container.

In some embodiments, the drawer dishwasher includes a bracket fixed outside the inner container, the bracket is formed with a guide groove extending in a vertical direction, the support rod assembly includes a support rod and a guide rod fixedly connected to the support rod, one end of the support rod is connected to the driving device, the other end of the support rod is fixedly connected to the cover plate, the support rod is in sliding fit with the guide groove through the guide rod, and when the driving device drives the support rod assembly to move back and forth in the vertical direction relative to the inner container, the guide rod slides along the guide groove.

In some embodiments, the bracket includes a first bracket and a second bracket fixed on the same side of the inner container and disposed at an interval, the guide groove includes a first guide groove formed on the first bracket and a second guide groove formed on the second bracket, the first guide groove is opposite to the second guide groove, the support rod is located between the first bracket and the second bracket, and two opposite ends of the guide rod are respectively in sliding fit with the first guide groove and the second guide groove.

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

Drawings

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

FIG. 1 is a schematic view of a drawer dishwasher in accordance with an embodiment of the present invention;

FIG. 2 is an enlarged schematic view of a portion I of the drawer dishwasher of FIG. 1;

FIG. 3 is an enlarged schematic view of part II of the drawer dishwasher of FIG. 1;

FIG. 4 is a schematic cross-sectional view of a drawer dishwasher in accordance with an embodiment of the present invention;

FIG. 5 is an enlarged schematic view of part III of the drawer dishwasher of FIG. 4;

FIG. 6 is another schematic cross-sectional view of a drawer dishwasher in accordance with an embodiment of the present invention;

FIG. 7 is an enlarged schematic view of a portion IV of the drawer dishwasher of FIG. 6;

FIG. 8 is a schematic view of a structure of a cover plate of a drawer dishwasher according to an embodiment of the present invention;

FIG. 9 is an enlarged schematic view of portion V of the cover plate of FIG. 8;

FIG. 10 is a schematic cross-sectional view of a lid of a drawer dishwasher in accordance with an embodiment of the present invention;

fig. 11 is an enlarged schematic view of a vi portion of the cap plate of fig. 10.

Description of the main element symbols:

a drawer dishwasher 100;

the inner container 10, the chamber 11, the opening 111, the inner surface 112, the connecting end 12, the connecting curved surface 121, the inclined surface 122, the cover plate 20, the mating end 21, the duct 211, the protrusion 212, the outer side 2121, the sealing ring 30, the ring body 31, the sealing head 32, the first sealing head 321, the second sealing head 322, the third sealing head 323, the fourth sealing head 324, the fifth sealing head 325, the fixing head 33, the driving device 40, the first motor 41, the second motor 42, the support rod assembly 50, the support rod 51, the guide rod 52, the bracket 60, the guide groove 61, the first guide groove 611, the second guide groove 612, the first bracket 62, the second bracket 63, and the connecting rod 70.

Detailed Description

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

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. 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, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the description of the present invention, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected unless otherwise explicitly stated or limited. Either mechanically or electrically. Either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Referring to fig. 1 to 11, a drawer dishwasher 100 according to an embodiment of the present invention includes a tub 10, a cover plate 20, and a gasket 30. The inner container 10 is formed with a chamber 11. The inner container 10 includes a connection end 12 bent upwardly and outwardly from an opening 111 of the chamber 11. The cover plate 20 is movably installed on the inner container 10. The cover plate 20 is formed with a mating end 21 that mates with the connecting end 12. The cover 20 is movable between a first position a and a second position b with respect to the inner container 10. When the cover plate 20 is in the first position a, the mating end 21 mates with the connection end 12 and covers the opening 111 of the cavity 11. When the cover plate 20 is in the second position b, the mating end 21 is disengaged from the opening 111 of the cavity 11. The sealing ring 30 is fixedly connected with the mating end 21. The seal ring 30 includes a ring body 31 and a plurality of seal heads 32 extending outwardly from one side of the ring body 31. Each sealing head 32 is annular in shape. The plurality of sealing heads 32 includes at least one first sealing head 321 and at least two second sealing heads 322. At least two second sealing heads 322 surround at least one first sealing head 321. When the cover plate 20 is in the first position a (as shown in fig. 4 and 5), the sealing ring 30 abuts against the inner surface 112 of the cavity 11 through at least one first sealing head 321 and abuts against the connection end 12 through at least two second sealing heads 322 to seal the gap between the mating end 21 and the connection end 12. When the cover plate 20 is in the second position b (shown in fig. 6), the sealing ring 30 is disengaged from the connection end 12.

In the drawer dishwasher 100, the at least one first sealing head 321 abuts against the inner surface 112 of the cavity 11, and the at least two second sealing heads 322 abuts against the connecting end 12, so that the plurality of sealing heads 32 are annularly abutted at different positions, and the sealing manner of the gap between the sealing mating end 21 of the sealing ring 30 and the connecting end 12 is multi-stage annular sealing, which can improve the sealing effect of the mating end 21 and the connecting end 12, and can improve the reliability of the gap between the sealing mating end 21 of the sealing ring 30 and the connecting end 12, thereby ensuring the stability of the drawer dishwasher 100 in the operation process, and making the drawer dishwasher 100 not easy to fail due to the poor sealing effect of the cover plate 20 and the inner container 10.

It should be noted that the sealing ring 30 can be made of a silicone material. Each first sealing head 321 bears against the inner surface 112 of the chamber 11 and is able to form an annular sealing surface. Each second sealing head 322 bears against the connecting end 12 and can form an annular sealing surface. The number of the first sealing heads 321 and the number of the second sealing heads 322 can be set according to specific situations.

It will be appreciated that further the drawer dishwasher 100 comprises a basket (not shown) and a spray device. The bowl basket is disposed within the chamber 11. The bowl basket can be used for placing tableware. The spray assembly includes a spray arm (not shown) disposed within the chamber 11 and rotatable relative to the bowl basket. The spray arm is provided with a plurality of spray holes (not shown) arranged at intervals, and the spray holes face the bowl basket. In this way, when the mating end 21 is mated with the connection end 12 and covers the opening 111 of the cavity 11, and the gasket 30 seals the gap between the mating end 21 and the connection end 12 (i.e. when the cover plate 20 is in the first position a), the drawer dishwasher 100 can be operated for washing, where the dishes in the basket can be washed by spraying with the rotating spray arm. After washing is completed, the lid 20 may be disengaged from the tub 10 (even if the lid 20 is in the second position b), so as to facilitate removal of the dishes from the compartment 11.

In some embodiments, the mating end 21 defines a plurality of apertures 211 spaced apart. The sealing ring 30 includes a plurality of fixing heads 33 extending outwardly from the other side of the ring body 31. The plurality of fixing heads 33 are respectively fixed in the plurality of cell passages 211 so that the ring body 31 covers the plurality of cell passages 211. A plurality of sealing heads 32 are positioned outside of the plurality of orifices 211 and surround the plurality of orifices 211.

In this way, the fixing manner in which the plurality of fixing heads 33 are respectively fixed in the plurality of hole passages 211 can make the fixed connection between the seal ring 30 and the mating end 21 tighter, and can improve the stability of the fixed connection between the seal ring 30 and the mating end 21. In addition, since the portions of the sealing ring 30 are fixed in the plurality of the hole passages 211, the size of the cover plate 20 in the height direction (i.e., the vertical direction y) can be reduced while ensuring the tightness of the connection between the sealing ring 30 and the mating end 21.

It should be noted that the number and distribution of the cells 211 can be set according to specific situations.

In some embodiments, the plurality of fixing heads 33 are respectively fixed in the plurality of tunnels 211 by using an encapsulation process. Thus, not only the tight fit of the seal ring 30 and the mating end 21 is realized through a simple process, but also the reliability of the fit of the seal ring 30 and the mating end 21 can be ensured.

In some embodiments, the mating end 21 is formed with a protrusion 212 having an annular shape. The protrusion 212 defines a plurality of openings 211. The plurality of cell passages 211 are spaced apart along the circumference of the boss 212. In this way, the provision of the projection 212 can improve the sealing effect of the seal ring 30 for sealing the gap between the mating end 21 and the connection end 12.

In the example shown in fig. 8 and 9, the cell 211 has a square shape. The plurality of cell passages 211 are spaced apart along the circumference of the boss 212.

In some embodiments, the first sealing head 321 is triangular in cross-section. The second sealing head 322 has a triangular cross-section. When the cover plate 20 is located at the first position a, the first sealing head 321 abuts against the inner surface 112 of the cavity 11 through the sharp corner of the first sealing head 321, and the second sealing head 322 abuts against the connection end 12 through the sharp corner of the second sealing head 322. Thus, the first sealing head 321 and the second sealing head 322 both seal the abutted part in a triangular pointed sealing manner, so that the stability of the contact surface fitting of the sealing heads and the abutted contact surface can be ensured.

In some embodiments, the connecting end 12 includes an annular connecting curved surface 121 and an annular inclined surface 122. The curved connecting surface 121 connects the inclined surface 122 and the inner surface 112 of the chamber 11. The at least two second sealing heads 322 include a third sealing head 323 and a fourth sealing head 324. The fourth sealing head 324 surrounds the third sealing head 323. When the cover plate 20 is located at the first position a, the third sealing head 323 abuts against the curved connecting surface 121, and the fourth sealing head 324 abuts against the inclined surface 122.

In this way, the third sealing head 323 and the fourth sealing head 324 respectively abut against different surfaces, which can further improve the sealing effect.

In the present embodiment, the curved connecting surface 121 constitutes a fillet junction. Thus, the third sealing head 323 abuts against the round corner joint, the fourth sealing head 324 abuts against the upper side of the round corner joint, and the first sealing head 321 abuts against the lower side of the round corner joint, so that the multistage annular sealing mode can fully ensure the sealing effect of the gap between the sealing matching end 21 and the connecting end 12 of the sealing ring 30.

In some embodiments, the number of fourth sealing heads 324 is two. The two sharp corners of the two fourth sealing heads 324 are spaced against the bevel 122. In this way, a four-stage seal can be formed.

In the present embodiment, the mating end 21 is formed on the outside of the cover plate 20. The plurality of sealing heads 32 includes a fifth sealing head 325 surrounding the fourth sealing head 324. The fifth sealing head 325 has a contact surface that contacts the outer surface 2121 of the convex portion 212. The sharp end of the fifth sealing head 325 abuts the bevel 122. In this way, the provision of the fifth seal head 325 can further improve the sealing effect outside the seal ring 30.

In certain embodiments, the cover plate 20 is a stainless steel cover plate. Thus, the strength of the cover plate 20 is large.

In the present embodiment, the cover plate 20 has a substantially rectangular shape.

It will be appreciated that in other embodiments, the cover is a plastic cover. Thus, the cover plate is light in weight. It should be noted that the cover plate can be made of plastic with higher strength.

In some embodiments, the drawer dishwasher 100 includes a drive device 40 and a support rod assembly 50 movably mounted outside the inner tub 10. The driving means 40 is connected to the cover plate 20 through a support rod assembly 50. The driving device 40 is used for driving the support rod assembly 50 to move back and forth in the vertical direction y relative to the liner 10 so as to drive the cover plate 20 to move between the first position a and the second position b relative to the liner 10.

In this manner, movement of the cover plate 20 can be achieved in a relatively simple driving manner by the driving means 40 and the support bar assembly 50.

In some embodiments, the drawer dishwasher 100 includes a rack 60 secured to the outside of the tub 10. The bracket 60 is formed with a guide groove 61 extending in the vertical direction y. The support rod assembly 50 includes a support rod 51 and a guide rod 52 fixedly connected to the support rod 51. One end of the support rod 51 is connected to the driving device 40. The other end of the support rod 51 is fixedly connected with the cover plate 20. The support rod 51 is slidably fitted to the guide groove 61 through the guide rod 52. When the driving device 40 drives the support rod assembly 50 to move back and forth in the vertical direction y relative to the liner 10, the guide rod 52 slides along the guide groove 61.

In this way, when the support rod assembly 50 moves back and forth in the vertical direction y relative to the liner 10, the guide groove 61 may play a role of limiting, so that the support rod assembly 50 is limited to move only in the vertical direction y. Therefore, the cover plate 20 and the inner container 10 can be accurately and stably matched, and the sealing effect of the cover plate 20 and the inner container 10 in matching can be further ensured.

In some embodiments, the support 60 includes a first support 62 and a second support 63 spaced apart from each other and secured to the same side of the bladder 10. The guide groove 61 includes a first guide groove 611 formed at the first bracket 62 and a second guide groove 612 formed at the second bracket 63. The first guide groove 611 is opposite to the second guide groove 612. The support bar 51 is positioned between the first bracket 62 and the second bracket 63. Opposite ends of the guide rod 52 are slidably fitted with the first guide groove 611 and the second guide groove 612, respectively.

In this way, the two oppositely arranged guide grooves can improve the sliding stability of the guide rods 52, and then ensure the stability of the cover plate 20 moving in the vertical direction y relative to the liner 10.

In the present embodiment, the driving device 40 includes a first motor 41 and a second motor 42. The drawer dishwasher 100 comprises two connecting rods 70. The number of the support rods 51 is two. The two support rods 51 are respectively disposed at both sides of the inner container 10. The first motor 41 and the second motor 42 are respectively connected to the support rods 51 through the connecting rods 70. The first motor 41 and the second motor 42 can respectively drive the connecting rod 70 to move upwards to respectively drive the two support rods 51 to move upwards, and then can drive the cover plate 20 to move upwards to the second position b, so that the cover plate 20 is separated from the liner 10. This in order to further open the opening 111 of the chamber 11. When the cover plate 20 needs to be matched with the liner 10, the connecting rods 70 can be driven by the first motor 41 and the second motor 42 to move downwards to respectively drive the two support rods 51 to move downwards, and then the cover plate 20 is driven to move downwards to the first position a.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or uses of other materials.

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

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

Claims

1. A drawer dishwasher, comprising:

the inner container is provided with a cavity, the inner container comprises a connecting end which is bent upwards and outwards and extends from an opening of the cavity, the connecting end comprises a connecting curved surface and an inclined surface, the connecting curved surface is connected with the inclined surface and the inner surface of the cavity, and the connecting curved surface forms a fillet connecting part;

the cover plate is movably arranged on the inner container, a matching end matched with the connecting end is formed on the cover plate, the cover plate can move between a first position and a second position relative to the inner container, when the cover plate is positioned at the first position, the matching end is matched with the connecting end and covers the opening of the cavity, and when the cover plate is positioned at the second position, the matching end is separated from the opening of the cavity;

a seal ring fixedly connected to the mating end, the seal ring including a ring body and a plurality of seal heads extending outward from one side of the ring body, the seal heads being in point contact with the liner, each seal head being annular, the plurality of seal heads including at least one first seal head and at least two second seal heads, the at least two second seal heads including a third seal head, a fourth seal head and a fifth seal head, the at least two second seal heads surrounding the at least one first seal head, the fourth seal head including a plurality of seal heads surrounding the third seal head, the fifth seal head including a plurality of seal heads surrounding the fourth seal head, the seal ring abutting against the inner surface of the chamber through the at least one first seal head when the cover plate is in the first position, the first seal head abutting against a lower portion of the fillet joint, the third sealing head supports the fillet junction, the plurality of fourth sealing heads support the fillet junction, the number of the fourth sealing heads is two, the two fourth sealing heads support the inclined plane at intervals, the matching end is formed with an annular convex part, the fifth sealing head is formed with a binding surface which is attached to the outer side surface of the convex part, and when the cover plate is located at the second position, the sealing ring is separated from the connecting end.

2. The drawer dishwasher of claim 1 wherein the mating end defines a plurality of spaced openings, the gasket includes a plurality of retaining tabs extending outwardly from another side of the collar, the retaining tabs being secured within the plurality of openings to retain the collar around the plurality of openings, and the sealing tabs being positioned outside of and around the plurality of openings.

3. The drawer dishwasher of claim 2 wherein the plurality of fastening heads are respectively fastened in the plurality of openings using an encapsulation process.

4. The drawer dishwasher of claim 2 wherein the protrusion defines the plurality of openings, the plurality of openings being spaced circumferentially about the protrusion.

5. The drawer dishwasher of claim 1 wherein the first sealing head is triangular in cross-section and the second sealing head is triangular in cross-section, the first sealing head being held against the interior surface of the chamber by a sharp corner of the first sealing head and the second sealing head being held against the connecting end by a sharp corner of the second sealing head when the lid is in the first position.

6. The drawer dishwasher of claim 1 wherein the lid is a stainless steel lid or the lid is a plastic lid.

7. The drawer dishwasher of claim 1 comprising a driving device and a support rod assembly movably mounted outside the inner container, wherein the driving device is connected to the cover plate via the support rod assembly, and the driving device is configured to drive the support rod assembly to move back and forth in a vertical direction relative to the inner container to move the cover plate between the first position and the second position relative to the inner container.

8. The drawer dishwasher of claim 7, comprising a bracket fixed outside the inner container, wherein the bracket is formed with a guide groove extending in a vertical direction, the support rod assembly comprises a support rod and a guide rod fixedly connected with the support rod, one end of the support rod is connected with the driving device, the other end of the support rod is fixedly connected with the cover plate, and the support rod is in sliding fit with the guide groove through the guide rod;

when the driving device drives the supporting rod assembly to move back and forth relative to the inner container in the vertical direction, the guide rod slides along the guide groove.

9. The drawer dishwasher of claim 8 wherein the rack comprises a first rack and a second rack spaced apart from each other and fixed to the same side of the inner container, the guide channel comprises a first guide channel formed in the first rack and a second guide channel formed in the second rack, the first guide channel is opposite to the second guide channel, the support rod is positioned between the first rack and the second rack, and opposite ends of the guide rod are slidably engaged with the first guide channel and the second guide channel, respectively.