WO2022267628A1

WO2022267628A1 - Dishwasher air curtain device, and dishwasher

Info

Publication number: WO2022267628A1
Application number: PCT/CN2022/086092
Authority: WO
Inventors: 李涛; 杨林; 宋华诚; 贾红奎; 刘维彤
Original assignee: 青岛海尔洗碗机有限公司; 海尔智家股份有限公司
Priority date: 2021-06-23
Filing date: 2022-04-11
Publication date: 2022-12-29
Also published as: CN115500762A; EP4360529A1; AU2022298495A1

Abstract

A dishwasher air curtain device, and a dishwasher. The dishwasher air curtain device comprises an air curtain assembly (1) and a fan (2). The air curtain assembly (1) is provided with an air inlet (12) and an air outlet (11). The air curtain assembly (1) is internally provided with an air path which guides air from the air inlet (12) to the air outlet (11). The fan (2) provides air into the air curtain assembly (1) via the air inlet (12). The air curtain assembly (1) comprises a first housing (13) and a second housing (14). A cavity (141) is recessed from the first housing (13) and/or the second housing (14) toward a direction away from the other housing. The cavity (141) extends to the air outlet (11) to form the air path. The air curtain assembly (1) is further internally provided with a mounting portion (142) for mounting the fan (2). The mounting portion (142) extends to a mounting opening provided on one side of the air curtain assembly (1), and communicates with the outside of the air curtain assembly (1) via the mounting opening. The fan (2) is detachably mounted in the air curtain assembly (1) by means of a tray (3). Since the dishwasher air curtain device is mounted in a gap between the dishwasher inner container and a box body, the dishwasher air curtain device is mounted in a narrow gap within the dishwasher, thereby preventing the space inside the dishwasher inner container from being occupied and preventing the capacity of the dishwasher inner container from being squeezed.

Description

Dishwasher air curtain device and dishwasher

technical field

The invention belongs to the field of dishwashers, in particular to an air curtain device for a dishwasher and a dishwasher.

Background technique

Existing dishwashers, after hot water washing, cold water rinsing, and hot water rinsing, will automatically open the door of the dishwasher during the drying stage to improve the drying speed and drying effect. However, in the above scheme, there is moisture discharge Condensation on the door body during the process affects the service life of the cabinet. At the same time, a small amount of oil in the moisture accumulates on the door body and the surface of the cabinet, affecting the aesthetics of the dishwasher and cabinet, and reducing the user experience.

In order to solve the above-mentioned problems in the prior art, the Chinese invention patent with the application number CN201210183982.3 discloses a dishwasher ventilated through the gap at the door frame. In the lower part of the inner tank, the wind is sent into the gap by the fan and discharged from the upper opening on the front side of the door body. When the dishwasher opens the door to cool down, the hot and humid air escapes from the front side of the dishwasher and mixes with the cold air discharged from the gap. Reduce the temperature of hot and humid air to avoid moisture condensation at the door opening; although the above solution can reduce the temperature of the air escaping from the door opening of the dishwasher and prevent hot and humid air from condensing at the door opening, the fan in the above solution Installed in the lower part of the inner tank, in order to meet the installation requirements of the fan, the overall size of the inner tank needs to be reduced, which affects the volume of the dishwasher.

In view of this, the present invention is proposed.

Contents of the invention

The object of the present invention is to provide an air curtain device for a dishwasher in view of the above-mentioned problems in the prior art, including an air curtain assembly, the air curtain assembly includes a first casing and a second casing, and the first casing and/or The second casing is provided with a depression away from the other casing to form an air passage, and the air curtain device can be installed in a narrow space in the dishwasher by reducing the thickness of the air curtain assembly.

Another object of the present invention is to provide a dishwasher for the problems of the prior art above. The air supply forms an air curtain to prevent the hot and humid air from diffusing to the outside of the dishwasher, and also avoid occupying too much space inside the dishwasher and affecting the volume of the dishwasher.

In order to achieve the above object, the first aspect of the present invention provides an air curtain device for a dishwasher, including an air curtain assembly and a fan, the air curtain assembly is provided with an air inlet and an air outlet, and the fan passes through the air inlet to Wind is provided within the air curtain assembly, the air curtain assembly comprising,

first shell;

a second housing, cooperating with the first housing to form the air curtain assembly;

The first housing and/or the second housing are recessed in a direction away from the other housing to form a cavity, the air inlet communicates with the cavity, and the cavity is from the air inlet to the outlet. The tuyere is extended to form a wind path.

Further, the edge of the first shell and/or the second shell is bent and covers the edge of the other shell so as to realize the cooperation between the first shell and the second shell.

In the above solution, the cavity on the first casing and/or the second casing extends to the air outlet to form an air path, which reduces the thickness of the air curtain assembly and enables the air curtain assembly to be placed in a narrow space in the dishwasher.

Further, the air curtain device for the dishwasher also includes,

The installation part is obtained from the first housing and/or the second housing having a recess in a direction away from the other housing, and is used for installing the fan;

The air inlet is located on one side of the recess of the installation part, and the air inlet end of the fan is opposite to the air inlet.

In the above scheme, the fan is installed inside the air curtain assembly, which further reduces the overall thickness of the air curtain device, and avoids the internal space of the dishwasher being occupied by a separate installation of the fan.

Further, the air curtain assembly is provided with an installation port, the installation part extends to the installation port and communicates with the outside of the air curtain assembly, and the fan is detachably installed on the installation part through the installation port middle.

Preferably, the installation opening is far away from the air inlet and is located on a side adjacent to the side of the air curtain assembly having the air inlet.

In the above solution, the installation port is far away from the side of the air curtain assembly with the air outlet, so as to prevent the installation part from being close to the air outlet, resulting in an increase in the thickness of the side of the air curtain assembly with the air outlet, which increases the difficulty of installation.

Further, the air curtain device for the dishwasher also includes,

a bracket, detachably installed in the installation part, for fixing the fan in the installation part;

The bracket and the installation part are provided with a fixing part cooperating with each other for fixing the bracket, and the bracket is fixed in the installation part through the fixing part.

The above solution realizes the stability of the installation of the fan in the installation part through the bracket, avoids the shaking of the fan and affects the air supply effect, and the fan can be taken out of the installation part more easily through the bracket, which is convenient for replacement and maintenance operations.

Further, the air curtain assembly also includes,

The guide rib protrudes to the inside of the air curtain assembly and is arranged on the concave portion to evenly guide the wind to the air outlet.

Further, one end of the guide rib is close to the air outlet, and is inclined from the end close to the air outlet to the air inlet.

Due to the structural limitation of the air curtain assembly, if the air outlet of the fan is directly facing the air inlet of the air curtain assembly, the air curtain blown out by the air curtain assembly will be uneven, resulting in more air supply in the middle and less or even no air supply on both sides. In the case of air supply, the flow direction of the wind entering the interior of the air curtain assembly is perpendicular to the opening direction of the air outlet, and the wind is evenly guided to the air outlet through the guide ribs, so that the air outlet of the air curtain assembly is evenly distributed and the air outlet is improved. The quality of the air curtain produced.

Preferably, the guide ribs are arranged in an arc shape.

The above-mentioned optimal solution can guide the wind to the air outlet of the air curtain assembly more smoothly through the arc-shaped guide ribs, avoid running noise due to wind resistance, and avoid eddy currents in the air curtain assembly, affecting the air supply effect of the air curtain assembly .

Further, the air inlet and the air outlet are arranged in a staggered position, and a plurality of guide ribs are arranged at intervals in the groove along a direction perpendicular to the direction of the air inlet, and the plurality of guide ribs are distributed in a ladder shape, As the distance from the air inlet increases, it gradually approaches the other side opposite to the air outlet.

The above solution further improves the uniformity of the air curtain produced by the air curtain assembly through the plurality of guide ribs distributed in steps.

Further, the cross section of the air curtain assembly increases in a direction perpendicular to the air outlet as the distance from the air outlet increases.

In the above solution, the air curtain assembly can also generate an air curtain under the condition of low wind pressure, which avoids the noise generated by the use of a large-power fan and reduces the user experience.

Further, the air curtain assembly also includes,

The supporting part is provided on the first casing and/or the second casing away from the air outlet, and protrudes toward the direction of the other casing;

When the first shell and the second shell are fitted in place, the first shell and/or the second shell with the supporting portion contacts the other shell for supporting the first shell and the distance between the second housing.

The above solution supports the distance between the first casing and the second casing by the supporting part, thereby improving the structural stability of the air curtain assembly, avoiding deformation of the air curtain assembly after long-term use, and affecting the uniformity of the air curtain.

The second aspect of the present invention provides a dishwasher, which has the dishwasher air curtain device described in the above solution, and the dishwasher air curtain device is arranged between the upper wall of the inner tank of the dishwasher and the upper box body Between, an air curtain is provided to the upper end of the door of the dishwasher, and the air curtain device for the dishwasher further includes,

The connecting piece is detachably connected with the upper wall of the dishwasher liner, and is used for fixing the dishwasher air curtain device.

The air curtain device of the above scheme is fixed on the front side of the dishwasher liner through the connecting piece, and air is supplied to the upper part of the door body during the cooling stage of the dishwasher, and the air curtain is used to prevent the hot and humid air from diffusing from the opening to the outside of the dishwasher to avoid condensation of the hot and humid air Affects cabinet appearance on cabinet surfaces.

Further, the middle part of the upper wall of the inner tank protrudes upwards, and an installation area for installing the air curtain device is formed on the front side of the upper wall of the inner tank.

The above scheme avoids adjusting the shape of the cabinet to cooperate with the installation of the air curtain device of the dishwasher by setting the installation area, which improves the overall aesthetics of the dishwasher and does not affect the volume of the inner tank of the dishwasher.

The advantage of using the above scheme is that the air curtain assembly includes a first housing and a second housing, and the cavity on the first housing and/or the second housing extends to the air outlet to form an air path, reducing the air curtain assembly. Thickness, so that the air curtain assembly can be set in the narrow space in the dishwasher; the fan is detachably installed in the installation part through the installation port, so as to avoid the internal space of the dishwasher occupied by a separate fan installation; the fan is installed in the installation part through the bracket , which realizes the stability of the installation of the fan and the air curtain assembly, and is also convenient for the operator to repair and maintain the air curtain device; through the guide ribs in the air curtain assembly, the wind is evenly guided to the air outlet to ensure that the wind at the air outlet The uniformity of the curtain; the guide ribs are arranged in an arc shape, and multiple guide ribs are arranged at intervals along the direction away from the air inlet. As the distance between this and the air inlet increases, it gradually approaches the other side opposite to the air outlet. While the wind resistance makes the wind flow smoothly, the uniformity of the air curtain at the air outlet is further improved through the guide ribs arranged at multiple intervals; the above scheme enables the air curtain assembly to generate an air curtain under the condition of low wind pressure, avoid In order to avoid the use of a large power fan to generate noise and reduce the user experience; the distance between the first shell and the second shell is supported by the support part to avoid deformation of the air curtain component after long-term use and affect the uniformity of the air curtain; washing The air curtain device of the bowl machine is arranged between the upper wall of the inner tank of the dishwasher and the upper box body, and is fixed on the front side of the upper wall of the inner tank by a connecting piece, and sends air to the upper part of the door body during the cooling down stage of the dishwasher. Prevent hot and humid air from diffusing from the opening to the outside of the dishwasher, and prevent hot and humid air from condensing on the surface of the cabinet and affecting the appearance of the cabinet.

Description of drawings

Fig. 1 is a structural schematic diagram of an air curtain device for a dishwasher according to the present invention.

Fig. 2 is an exploded schematic view of the air curtain device of the dishwasher in Fig. 1 .

Fig. 3 is a bottom view of the air curtain device of the dishwasher shown in Fig. 1 .

In the figure: 1, air curtain assembly; 11, air outlet; 12, air inlet; 13, first shell; 14, second shell; 141, cavity; 142, installation part; 143, guide rib; 144, Support part; 145, matching structure; 2, fan; 3, bracket; 31, fixing structure; 32, through hole; 4, connector.

detailed description

Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Those skilled in the art will understand that the following embodiments are only used to explain the technical principle of the present invention, and are not intended to limit the protection scope of the present invention.

In the description of the present invention, unless otherwise clearly stipulated and limited, the terms "setting" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be Directly connected or indirectly connected through an intermediary, those skilled in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer" etc. The orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, use a specific Azimuth configuration and operation, therefore, should not be construed as limiting the invention.

Embodiment one

As an embodiment of the present invention, this embodiment provides an air curtain device for a dishwasher, including an air curtain assembly 1 and a fan 2, as shown in Figure 1, the air curtain assembly 1 is provided with an air inlet 12 and an air outlet 11 , the air curtain assembly 1 has an air path that guides the wind from the air inlet 12 to the air outlet 11, and the fan 2 supplies air to the air curtain assembly 1 through the air inlet 12.

In this embodiment, as shown in Figure 2 and Figure 3, the air curtain assembly 1 includes,

the first housing 13;

The second housing 14 cooperates with the first housing 13 to form the air curtain assembly 1;

On the second housing 14, a cavity 141 is formed by recessing in a direction away from the first housing 13, the air inlet 12 communicates with the cavity 141, and the cavity 141 extends to the air outlet 11 to form the In the air path, the edge of the first shell 13 is bent and wraps around the edge of the second shell 14 to realize the cooperation between the first shell 13 and the second shell 14 .

In the above solution, the first shell 13 and the second shell 14 are matched by covering the edge of the second shell 14 with the edge of the first shell 13, which is convenient for the operator to perform maintenance, and also avoids connection through snaps and the like. The method causes the airtightness of the air curtain assembly 1 to decrease.

Further, the second casing 14 is also provided with a mounting portion 142 recessed away from the first casing 13, the fan 2 is installed in the mounting portion 142, and the air inlet 12 is located on the downwardly recessed side of the mounting portion 142. , when the fan 2 is installed in place, the air inlet end of the fan 2 is opposite to the air inlet 12.

The cavity 141 and the installation part 142 are arranged on the same side, which reduces the overall thickness of the air curtain assembly 1 and facilitates installation in a narrow space inside the dishwasher.

Further, the air curtain assembly 1 is provided with an installation port, the installation port is far away from the air inlet 12, and is arranged on the side wall of the air curtain assembly 1 adjacent to the side with the air outlet 11, the installation part 142 extends toward the installation port, and passes through The installation opening communicates with the outside of the air curtain assembly 1, and the air curtain assembly 1 also includes a bracket 3. A fixed structure 31 that cooperates with each other is provided on the bracket 3 and the installation part 142. The fan 2 is detachably mounted on the installation through the bracket 3. Section 142.

Further, the above-mentioned fixing structure 31 is a buckle and a slot.

The above solution realizes the fixing of the blower fan 2 in the installation part 142 through the bracket 3 , and at the same time, it is convenient for the operator to disassemble and replace.

Further, the bracket 3 is provided with a through hole 32. When the fan 2 is installed on the bracket 3, the air inlet end of the fan 2 is aligned with the through hole 32, and passes through the through hole 32 and the air inlet 12 on the second housing 14. align.

Further, when the fan 2 is installed in place, the direction of the air outlet of the fan 2 is perpendicular to the direction of the air outlet 11 of the air curtain assembly 1, and guide ribs 143 are also provided in the air curtain assembly 1 for blowing out the air outlet of the fan 2. The wind is guided to the air outlet 11 of the air curtain assembly 1 .

Further, the air inlet 12 and the air outlet 11 are misplaced, and three guide ribs 143 are arranged at intervals along the air outlet direction of the fan 2 in the groove, and the three guide ribs 143 are distributed in a ladder shape. The increase of the distance gradually moves away from the air outlet 11 .

The above solution can guide the wind to the air outlet 11 more evenly through the guide ribs 143 arranged in steps, so that the air curtain is more uniform.

Furthermore, the guide ribs 143 are arranged in an arc shape, which reduces wind resistance, avoids noise during operation, and prevents eddy currents in the air curtain assembly 1 from affecting normal air flow.

Further, the cross-sectional area of the air curtain assembly 1 decreases gradually along the direction close to the air outlet 11, which increases the wind pressure at the air outlet 11, and can form an air curtain without using a higher-power fan 2, avoiding the need for a larger power The noise generated by the fan 2 during operation affects user experience.

Further, on the side of the second housing 14 away from the air outlet 11, there are a plurality of supporting parts 144 protruding toward the direction close to the first housing 13. When the second housing 14 and the first housing 13 are installed in place, The supporting part 144 is in contact with the first housing 13 to support the distance between the first housing 13 and the second housing 14, so as to prevent the air curtain assembly 1 from deforming after long-term use and affecting the uniformity of the air curtain.

Embodiment two

As another embodiment of the present invention, this embodiment provides an air curtain device for dishwashers, which has the same structure as Embodiment 1, the difference is that both the first casing and the second casing are equipped with The cavity formed by the recess in the direction of the casing further enlarges the difference in cross-sectional area of the air curtain assembly along the opening direction of the air outlet through the above scheme, so that the air curtain provided by the air outlet of the air curtain assembly is more uniform.

Furthermore, since the power of the fan is small and the volume of the cavity at the rear of the air curtain assembly is relatively large, there is no need to separately set up an installation part for installing the air curtain assembly, and the fan can be directly fixed in the cavity through the bracket, which improves the air flow rate. The screen device is aesthetically pleasing and easy to install.

Embodiment three

As another embodiment of the present invention, this embodiment provides an air curtain device for a dishwasher, which has the same structure as the first embodiment, except that the air outlet end of the fan is facing the air outlet of the air curtain assembly.

Furthermore, the guide ribs in the air curtain assembly are arranged radially from the air outlet end of the fan to the air outlet, and guide the wind blown from the air outlet end of the fan to different positions of the air outlet through the guide ribs, thereby improving the uniformity of the air outlet.

Furthermore, the guide ribs are arranged in an arc shape. Since the wind speed at the air outlet end of the fan is relatively fast, the guide ribs arranged in an arc shape can distribute the wind blown from the air outlet end of the fan more evenly, further improving the air curtain device. The uniformity of the air curtain blown out of the air outlet.

Embodiment Four

As another embodiment of the present invention, this embodiment provides an air curtain device for a dishwasher, which has the same structure as Embodiment 1, the difference is that the edges of the first casing and the second casing are provided with opposite A threaded hole, through which a screw passes through the threaded hole to connect the first shell and the second shell.

In the above solution, the screw realizes the tight connection between the first housing and the second housing, which improves the stability of the connection and the sealing performance of the air curtain assembly.

Further, the edges of the first shell and the second shell are also provided with a sealing layer, and the sealing layer is flexible and can be deformed when the first shell and the second shell are closely matched, thereby further improving the airtightness of the air curtain assembly .

The above scheme prevents wind from leaking from the gaps around the air curtain assembly by improving the airtightness of the air curtain assembly. When the wind pressure provided by the fan is small, the air curtain assembly can also produce a relatively uniform air curtain, further reducing the wind The energy consumption of the curtain unit reduces the overall power consumption of the dishwasher.

Another aspect of the present invention provides a dishwasher, which has the dishwasher air curtain device described in the above solution, specifically:

Embodiment five

As another embodiment of the present invention, this embodiment provides a dishwasher, which has the air curtain device for the dishwasher as described in Embodiment 1, and the air curtain device for the dishwasher is installed on the upper cabinet and inner container of the dishwasher in the space between the upper walls.

In this embodiment, the front side of the upper wall of the dishwasher liner is also provided with a connecting piece 4, and the air curtain device of the dishwasher is provided with a matching structure 145 that cooperates with the connecting piece 4, and is fixed on the dishwashing machine through the connecting piece 4. On the upper wall of the machine liner.

During the cooling down stage of the dishwasher, the door needs to be opened for heat dissipation. At this time, the hot and humid air diffuses to the outside of the dishwasher through the gap and condenses on the cabinet, which affects the aesthetics of the cabinet. The air curtain device between the dishwasher and the upper wall of the inner tank supplies air to the upper gap of the door body, and uses the air curtain to block the hot and humid air from diffusing from the opening to the outside of the dishwasher, preventing the hot and humid air from condensing on the cabinet surface and affecting the appearance of the cabinet.

The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Anyone familiar with the technology of this patent Without departing from the scope of the technical solutions of the present invention, when the technical content of the above hints can be used to make some changes or modifications to equivalent embodiments with equivalent changes, the implementations in the above examples can also be further combined or replaced, but Without departing from the content of the technical solution of the present invention, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

An air curtain device for a dishwasher, comprising an air curtain assembly and a fan, the air curtain assembly is provided with an air inlet and an air outlet, and the fan provides wind into the air curtain assembly through the air inlet, its features In that, the air curtain assembly includes,

first shell;

a second housing, cooperating with the first housing to form the air curtain assembly;

The first housing and/or the second housing is recessed away from the other housing to form a cavity, the air inlet communicates with the cavity, and the cavity is from the air inlet to the outlet. The tuyere is extended to form a wind path.
The air curtain device for the dishwasher according to claim 1, further comprising:

The installation part is obtained from the first housing and/or the second housing having a recess in a direction away from the other housing, and is used for installing the fan;

The air inlet is located on one side of the recess of the installation part, and the air inlet end of the fan is opposite to the air inlet.
The air curtain device of the dishwasher according to claim 2, wherein the air curtain assembly is provided with an installation opening, and the installation part extends to the installation opening and communicates with the outside of the air curtain assembly, the The fan is detachably installed in the installation part through the installation port;

Preferably, the installation opening is located away from the air inlet and is located on the side wall adjacent to the side of the air curtain assembly having the air inlet.
The air curtain device for the dishwasher according to claim 2, further comprising:

a bracket, detachably installed in the installation part, for fixing the fan in the installation part;

The bracket and the installation part are provided with a fixing part cooperating with each other for fixing the bracket, and the bracket is fixed in the installation part through the fixing part.
The air curtain device for a dishwasher according to any one of claims 1-4, wherein the air curtain assembly further comprises:

The guide rib protrudes toward the inside of the air curtain assembly and is provided on the concave portion to evenly guide the wind to the air outlet.
The air curtain device of the dishwasher according to claim 5, wherein one end of the guide rib is close to the air outlet, and is inclined from the end close to the air outlet to the air inlet;

Preferably, the guide ribs are arranged in an arc shape.
The air curtain device of the dishwasher according to claim 5, wherein the air inlet and the air outlet are arranged in a dislocation, and a plurality of air curtains are arranged at intervals in the groove along a direction perpendicular to the orientation of the air inlet. The guide ribs, a plurality of the guide ribs are distributed in a step shape, gradually approaching the other side opposite to the air outlet as the distance from the air inlet increases.
The air curtain device for a dishwasher according to claim 1, wherein the section of the air curtain assembly increases in a direction perpendicular to the air outlet as the distance from the air outlet increases.
The air curtain device of the dishwasher according to claim 8, wherein the air curtain assembly further comprises:

The supporting part is provided on the first casing and/or the second casing away from the air outlet, and protrudes toward the direction of the other casing;

When the first shell and the second shell are fitted in place, the first shell and/or the second shell with the supporting portion contacts the other shell for supporting the first shell and the distance between the second housing.
A dishwasher, having the air curtain device for the dishwasher according to any one of claims 1-9, characterized in that the air curtain device for the dishwasher is arranged on the upper wall and the upper wall of the inner container of the dishwasher. Between the boxes, an air curtain is provided to the upper end of the door of the dishwasher, and the air curtain device for the dishwasher further includes:

The connecting piece is detachably connected with the upper wall of the dishwasher liner, and is used for fixing the dishwasher air curtain device.