CN220024974U - Air supply arrangement and dish washer of dish washer - Google Patents

Abstract

The utility model belongs to the technical field of tableware cleaning devices, and discloses an air supply device of a dish washing machine and the dish washing machine. The air supply device of the dish washer comprises a ducted fan and a fan protection cover; the fan protection cover comprises a sleeve structure sleeved on the outer peripheral surface of the ducted fan shell; the ducted fan is provided with a ducted fan shell, and the inner peripheral surface of the fan protection cover is arranged at intervals with the outer surface of the ducted fan shell; and a filter hole is formed in the peripheral wall of the fan protection cover. According to the air supply device of the dish washer, the filter holes are formed in the peripheral wall of the fan protection cover, so that wind in multiple directions around the ducted fan can be absorbed by the ducted fan, the air inlet efficiency of the ducted fan is greatly improved, the drying efficiency of the dish washer can be improved, and the use experience of a user is improved.

Description

Air supply arrangement and dish washer of dish washer

Technical Field

The utility model belongs to the field of tableware cleaning devices, and particularly relates to an air supply device of a dish washing machine and the dish washing machine.

Background

Dish washing machines are becoming more popular as a device for automatically washing dishes, such as bowls, chopsticks, plates, dishes, knives, forks, etc. During operation of the dish washer, the tableware is washed clean by water flow, and then the tableware is dried. The current mode of drying tableware is mainly that an air duct structure is arranged on the outer wall of the dish washer, and an air outlet of the air duct structure is communicated with the inner container of the dish washer. The air duct structure comprises a fan, a heating device connected with the fan and an air inlet channel. When the dish washing machine is used, the fan sends wind into the air duct structure, the wind is heated by the heating device, and finally, hot air is led into the inner container of the dish washing machine, so that air flow in the cavity is quickened, and water on the surface of the dish is evaporated to dry the dish.

In order to reduce fastening air channels such as flocks in the existing dish washer, a layer of filtering structure is generally sleeved on the shell of the fan, but the filtering structure is generally only arranged at the tail part of the fan, and only one-way air inlet can be realized, so that the air inlet efficiency is low, and the drying efficiency of the dish washer is influenced.

The present utility model has been made in view of this.

Disclosure of Invention

The utility model aims to solve the technical problem of overcoming the defects of the prior art and providing an air supply device of a dish washer and the dish washer, wherein the air supply device is used for supplying air in multiple directions, so that the air supply quantity is increased.

In order to solve the technical problems, the utility model adopts the basic conception of the technical scheme that:

in one aspect, an air supply apparatus of a dishwasher is provided.

The air supply device of the dish washer is provided with a duct fan and a fan protection cover;

the fan protection cover comprises a sleeve structure sleeved on the outer peripheral surface of the ducted fan shell;

the ducted fan is provided with a ducted fan shell, and the inner peripheral surface of the fan protection cover is arranged at intervals with the outer surface of the ducted fan shell;

and a filter hole is formed in the peripheral wall of the fan protection cover.

According to the air supply device of the dish washer, the filter holes are formed in the peripheral wall of the fan protection cover, so that wind in multiple directions around the ducted fan can be absorbed by the ducted fan, the air inlet efficiency of the ducted fan is greatly improved, the drying efficiency of the dish washer can be improved, and the use experience of a user is improved.

Further, the method further comprises the following steps:

the damping pad is sleeved on the periphery of the ducted fan shell;

the installation muscle, the bellied setting of installation muscle is in on the inboard surface of fan safety cover, and for along fan safety cover circumference extension's annular structure, the periphery and the installation muscle looks butt of shock pad make the inner peripheral surface of fan safety cover and the surface interval setting of shock pad.

Further, the fan protection cover comprises a baffle plate which is close to the air inlet end of the duct fan, the baffle plate is perpendicular to the air inlet direction, a gap is formed between the baffle plate and the shock pad, and a filtering hole is formed in the baffle plate.

Further, the mounting ribs comprise first mounting ribs which are arranged at intervals with the baffle along the air supply direction;

and the filter holes on the peripheral wall of the fan protective cover are arranged between the baffle and the first mounting rib.

Further, the mounting ribs further comprise second mounting ribs, and the second mounting ribs are arranged between the baffle plate and the first mounting ribs;

an air outlet is arranged between the second mounting rib and the periphery of the shock pad;

the air outlet extends along the axial direction of the fan protection cover and penetrates through the second mounting rib.

According to the scheme provided by the utility model, the second mounting ribs are arranged, and the air outlet is arranged between the second mounting ribs and the periphery of the shock pad. Due to the adoption of the structure, the filter holes can be arranged at any position on the peripheral wall of the fan protection cover, particularly when the filter holes on the peripheral wall of the fan protection cover are arranged at the position from the second mounting rib to the air outlet of the ducted fan, wind enters the space between the ducted fan and the fan protection cover through the filter holes and then passes through the air outlet on the second mounting rib to enter the ducted fan.

Further, an air passing groove which is concave inwards is formed in the inner peripheral surface of the second mounting rib, and the air passing groove is matched with the outer peripheral surface of the shock pad to form an air passing opening.

Further, the shock pad is arranged in an extending mode along the air supply direction, and one end of the shock pad extends to the outer side of the air inlet end of the duct fan;

and the outer periphery edge of the shock pad is provided with a saw-tooth structure, and the top end of the saw-tooth structure is abutted with the baffle plate.

Further, a plurality of filtering holes are formed in the peripheral wall of the fan protection cover, and the filtering holes are distributed at intervals along the circumferential direction and/or the axial direction of the peripheral wall of the fan protection cover.

Further, a first limiting part and a second limiting part are arranged on the fan protection cover;

the first limiting part is provided with a first inner surface which is parallel to the axis of the ducted fan and extends towards the air inlet direction of the ducted fan, and a second inner surface which is connected with the extending tail end of the first inner surface and extends outwards along the radial direction of the ducted fan;

the second limiting part is provided with a third inner surface connected with the extending end of the second inner surface and extending towards the air inlet in parallel with the first inner surface, and a fourth inner surface connected with the extending end of the third inner surface and extending outwards along the radial direction of the ducted fan;

The second inner surface is abutted with the end face, close to the air outlet end, of the shock pad;

the third inner surface is abutted with the outer peripheral surface of the shock pad.

On the other hand, the utility model also provides a dish washer, which comprises the air supply device.

After the technical scheme is adopted, compared with the prior art, the utility model has the following beneficial effects:

1. according to the air supply device of the dish washer, the filter holes are formed in the peripheral wall of the fan protection cover, so that wind in multiple directions around the ducted fan can be absorbed by the ducted fan, the air inlet efficiency of the ducted fan is greatly improved, the drying efficiency of the dish washer can be improved, and the use experience of a user is improved.

2. According to the scheme provided by the utility model, the second mounting ribs are arranged, and the air outlet is arranged between the second mounting ribs and the periphery of the shock pad. Due to the adoption of the structure, the filter holes can be arranged at any position on the peripheral wall of the fan protection cover, particularly when the filter holes on the peripheral wall of the fan protection cover are arranged at the position from the second mounting rib to the air outlet of the ducted fan, wind enters the space between the ducted fan and the fan protection cover through the filter holes and then passes through the air outlet on the second mounting rib to enter the ducted fan.

3. According to the utility model, the air passing groove which is concave inwards is arranged on the inner peripheral surface of the second mounting rib, and the air passing groove is matched with the outer peripheral surface of the shock pad to form the air passing opening, so that the area of the air passing opening is larger, and the air passing quantity is increased.

4. The utility model has simple structure and obvious effect, and is suitable for popularization and use.

The following describes the embodiments of the present utility model in further detail with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. It is evident that the drawings in the following description are only examples, from which other drawings can be obtained by a person skilled in the art without the inventive effort. In the drawings:

FIG. 1 is a schematic view of a dishwasher in an embodiment of the present utility model;

FIG. 2 is a schematic view of a ducted fan used in a dishwasher according to an embodiment of the present utility model;

FIG. 3 is a schematic view of a ducted fan assembly structure for a dishwasher in accordance with an embodiment of the present utility model;

FIG. 4 is a schematic view of a blower, a fixture and a heating module connected in sequence in accordance with a first embodiment of the present utility model;

FIG. 5 is a schematic view of a protective cover according to a first embodiment of the utility model;

fig. 6 is a schematic structural view of a drying device removing cover and a corresponding side case of a heating module of a dishwasher according to the present utility model;

fig. 7 is a schematic view of a structure of a fixing member in a drying apparatus of a dishwasher according to the present utility model;

fig. 8 is a schematic view illustrating a structure of a fixing member in another direction in a drying apparatus of a dishwasher according to the present utility model;

FIG. 9 is a schematic diagram showing an assembly structure of a heating module and a flow guiding portion according to an embodiment of the present utility model;

FIG. 10 is a schematic diagram of a airway device in accordance with an embodiment of the utility model;

fig. 11 is a schematic view of a drying apparatus according to an embodiment of the present utility model.

In the figure: 1. an air supply device;

11. a ducted fan; 111. a rotor magnet; 112. a bearing; 113. a stator; 114. a fan housing; 115. an impeller; 117. a rotating shaft; 1131. a wire frame; 1132. three groups of enamelled wires;

12. a shock pad; 13. a fan protection cover;

121. a bump structure; 122. a saw tooth structure;

131. a filter hole; 132. a baffle; 133. a first mounting bar; 1331. a wind passing groove; 134. a second mounting bar; 135. a first limit part; 1351. a first inner surface; 1352. a second inner surface; 136. a second limit part; 1361. a third inner surface; 1362. a fourth inner surface; 137. a stop wall;

2. A fixing member; 21. a first connection portion; 211. a first portion; 212. a second portion; 22. a second connecting portion; 221. the clamping bulge; 24. a wiring structure; 25. an anti-misplug groove;

3. a heating module; 31. a support; 32. a housing; 33. a heating wire; 326. a bayonet; 3111. a first projection;

4. a flow guiding part; 41. a front tuyere; 42. a rear tuyere; 43. the upper wall of the flow guiding part; 44. a lower wall of the flow guiding part; 45. a sidewall; 46. a cambered surface; 5. an air duct; 51. an air supply duct; 512. an air inlet; 513. a bayonet of an air supply duct; 514. a mounting part; 5221. an air outlet;

7. a heating module protective cover; 71. an air inlet end; 72. an air outlet end; 73. a protective cover bulge; 74. convex ribs; 762. a buckle; 7611. a limit rib;

9. and a protective cover.

It should be noted that these drawings and the written description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept to those skilled in the art by referring to the specific embodiments.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions in the embodiments will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model, and the following embodiments are used to illustrate the present utility model, but are not intended to limit the scope of the present utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Example 1

The present embodiment provides an air supply device 1 of a dish washer.

The air supply device 1 comprises a ducted fan, the ducted fan in the embodiment is provided with an air inlet channel and an air outlet channel, and the central axis of the air inlet channel is coincident with the central axis of the air outlet channel. The ducted fan comprises a fan shell and a fan arranged in the fan shell, and the rotation axis of the fan is coincident with the central axis of the air inlet channel and/or the air outlet channel.

The ducted fan used in the embodiment is a structure for driving external airflow to finally enter the inner container of the dish washer through the air duct structure. The duct fan comprises a duct fan shell, a motor is arranged in the duct fan shell, and a rotating shaft of the motor is overlapped with the central shaft of the air inlet channel. The ducted fan also comprises a fan which is surrounded in the ducted fan shell, and the section of the fan is in a curved crescent shape. The rotation axis of the fan coincides with the central axes of the air inlet channel and the air outlet channel. The ducted fan provided by the embodiment is provided with an air inlet channel and an air outlet channel, and the central axis of the air inlet channel is overlapped with the central axis of the air outlet channel. That is, the duct fan adopted in this embodiment is adopted, after wind enters the air inlet channel, the fan rotates to push the wind out of the air outlet channel, and the air outlet channel and the air inlet channel are in a straight-line through structure.

As shown in fig. 2 and 3, the ducted fan in this embodiment includes: the air conditioner comprises a rotating shaft 117, wherein an impeller 115, a bearing 112 and a rotor magnet 111 are sequentially arranged on the rotating shaft 117 along the air supply direction;

the ratio of the axial length of the rotating shaft 117 to the axial length of the bearing 112 is 2 to 3.

In this embodiment, the fan housing 114 has an inner ring and an outer ring, between which a duct of the ducted fan 11 is formed, in which a bearing 112, a part of a stator 113 and a part of a rotor magnet 111 are disposed, the impeller 115 and the rotor magnet 111 are fixed on the rotating shaft 117, and the bearing 112 is engaged with the inner ring of the fan housing 114 to support the rotating shaft 117, so that the ratio of the axial length of the rotating shaft 117 to the axial length of the bearing 112 directly determines the rotation stability of the impeller 115. If the axial length of the bearing is too short relative to the axis of rotation, the problem may occur that the supported axis of rotation 117 is unstable and vulnerable to damage during rotation.

In this embodiment, by designing the ratio of the axial length of the rotor magnet 111 to the axial length of the rotating shaft 117, it is ensured that the torque generated by the combined action of the rotor magnet 111 and the stator 113 can make the rotating speed of the rotating shaft 117 reach at least 110000rpm without twisting and wearing the rotating shaft 117, and the ducted fan only needs to install one bearing, so that the ducted fan has a simple structure and is convenient to install.

In this embodiment, the ratio of the axial length of the rotor magnet 111 to the axial length of the rotation shaft 117 may be 0.3, the axial length of the rotor magnet 111 may be 12 mm, and the axial length of the rotation shaft 117 may be 40 mm.

In this embodiment, the stator 113 includes a wire frame 1131 and three groups of enameled wires 1132, wherein the three groups of enameled wires 1132 are wound on the wire frame 1131, and different currents are connected through the three groups of enameled wires 1132 to generate a rotating magnetic field so as to rotate the rotor magnet 111 positioned in the stator 113.

In this embodiment, the rotational speed of the ducted fan is selected according to the specific performance effect of the dish washer drying module and the drying time, and the corresponding air duct structural design is matched to ensure the drying performance, so that the drying effect is improved to the greatest extent. Thereby improving the overall performance of the dishwasher.

In this embodiment, the rotation axis has stability on the bearing of ducted fan when high rotational speed to make the overall dimension of ducted fan less, its rotation axis is also stable enough, and the rocking and the noise that produce are less, and the ducted fan only need install a bearing, make its simple structure, the installation of being convenient for. Meanwhile, the ducted fan has a miniaturized structure, is suitable for a dish washer, and has the air supply effect of high air speed and large air quantity.

The ducted fan of this embodiment adopts the ducted fan, that is, the central axis of the air inlet channel coincides with the central axis of the air outlet channel, and the wind pressure generated by this structure is large, the wind resistance is small, and the air quantity is large. Finally, the air quantity in the liner of the dish washer is increased, and the drying efficiency of the dish washer is improved. And because the fan is enclosed in the duct shell, the structure is compact, and the safety is high.

Because the ducted fan is adopted in the embodiment, the wind resistance is small, the air inlet quantity is large, and the drying efficiency of the air channel of the dish washer can be improved. However, in order to reduce the vibration frequency, the air supply device 1 further includes a shock pad 12, and the shock pad 12 is sleeved on the outer periphery of the casing of the ducted fan. In this embodiment, the shock pad 12 is an integrally formed structure and is sleeved on the outer periphery of the duct fan housing along the air supply direction. The cushion 12 is made of an elastic material capable of being deformed to some extent.

As shown in fig. 4, in the present embodiment, one end of the damper pad 12 extends to the outside of the air intake end of the ducted fan 11. That is, at the air inlet end of the ducted fan, the shock pad 12 extends beyond the ducted fan housing and extends away from the ducted fan housing, and a circle of saw-tooth structure 122 is provided along the outer periphery of the shock pad 12 at the end thereof. And the other end of the shock pad 12 extends to the outside of the air outlet end of the ducted fan 11. That is, at the air outlet end of the ducted fan, the shock pad 12 exceeds the ducted fan housing and extends away from the ducted fan housing.

In another aspect of this embodiment, the damper 12 is integrally provided, but the thickness of the damper 12 at the air inlet end position and the thickness of the damper 12 at the air outlet end position are greater than the thickness of the damper 12 at the intermediate position of the ducted fan.

In another aspect of this embodiment, the damper 12 is not integrally formed, but includes two parts, an inlet end damper and an outlet end damper, respectively. The air inlet end shock pad and the air outlet end shock pad are respectively sleeved at the air inlet end position and the air outlet end position of the duct fan shell, the middle is provided with a space, the air inlet end shock pad exceeds the duct fan shell and extends towards the direction far away from the duct fan shell, a circle of saw-tooth-shaped structure 122 is arranged on the outer periphery of the air inlet end shock pad, and the saw-tooth-shaped structure 122 comprises a plurality of continuous smooth grooves and smooth protrusions. And at the air outlet end of the culvert fan, the shock pad at the air outlet end exceeds the shell of the culvert fan and extends in the direction away from the shell of the culvert fan.

Because the ducted fan is adopted in the embodiment, the wind resistance is small, the air inlet quantity is large, and the drying efficiency of the air channel of the dish washer can be improved. However, in order to reduce the vibration frequency, in a further aspect of the present embodiment, at least one circle of protruding structures 121 is disposed along the circumference of the outer side surface of the shock pad 12, and the protruding structures 121 are disposed at intervals. In the specific scheme of the embodiment, two circles of protruding structures 121 are arranged on the outer side surface of the shock pad 12 in the axial direction, the protruding structures 121 are arranged in the middle of the shock pad 12, and a certain interval is reserved between the protruding structures 121 of the two circles. The convex structure 121 is a hemispherical structure with a smooth surface.

In this embodiment, when the ducted fan generates vibration during operation, the vibration is transferred to the shock pad 12, the bump structure 121 on the shock pad 12 absorbs the vibration first, and then the vibration is transferred to the shock pad 12 for re-absorption.

As shown in fig. 5 and 6, in a further aspect of this embodiment, the air supply device 1 further includes a fan protection cover 13, where the fan protection cover 13 in this embodiment is a sleeve structure sleeved on the outer peripheral surface of the shock pad 12, and two ends of the fan protection cover 13 are respectively disposed in the same direction with the air inlet and the air outlet of the ducted fan. The fan protection cover 13 is provided with a convex mounting rib on the inner side surface, the mounting rib is of an annular structure extending along the circumferential direction of the fan protection cover 13, the outer periphery of the shock pad 12 is abutted against the mounting rib, and the inner peripheral surface of the fan protection cover 13 is arranged at intervals with the outer surface of the shock pad 12.

In a further aspect of this embodiment, the fan protection cover 13 is provided with a baffle 132 perpendicular to the air inlet direction at the position of the air inlet, and the baffle 132 is provided with a filtering hole 131. The tips of the saw-tooth like structures 122 on the shock pad 12 abut the baffle 132. The tips of the serrations are the very tips of the smooth protrusions. In the present embodiment, the baffle 132 and the fan guard 13 are integrally provided. In other versions of the present embodiment, the baffle 132 and the fan guard 13 may be detachably connected.

In a further aspect of this embodiment, the peripheral wall of the fan protection cover 13 is provided with a plurality of filter holes 131, and the filter holes 131 are distributed at intervals along the circumferential direction or the axial direction of the peripheral wall of the fan protection cover 13.

In this embodiment, only one mounting rib, namely, the first mounting rib 133 is provided, and the filter holes 131 in the peripheral wall of the fan guard 13 are provided between the first mounting ribs 133 of the baffle 132. Since the peripheral wall of the fan protection cover 13 is provided with the filtering holes 131, wind can enter the ducted fan from the filtering holes 131 on the baffle 132, and can enter the ducted fan from the filtering holes 131 arranged on the fan protection cover 13 through the gaps between the zigzag structures 122 and the baffle 132. And because of the supporting effect of the mounting ribs on the ducted fan, the ducted fan shell and the fan protecting cover 13 are not arranged next to each other, but have a certain interval. Therefore, in this scheme, owing to be provided with the filtration pore 131 on the perisporium of fan safety cover 13, and set up the installation muscle at the internal surface of fan safety cover 13 to make the wind of duct fan whole body all can be absorbed by the duct fan, promoted the air inlet efficiency of duct fan greatly.

In a preferred embodiment of the present embodiment, the first mounting rib 133 is disposed at a rear position in the ducted fan, so that the mounting holes are provided more and the air intake is greater.

In another aspect of this embodiment, only the second mounting bead 134 is provided, with an air passage between the second mounting bead 134 and the outer periphery of the shock pad 12. In this embodiment, the air gap extends through the second mounting rib 134 along the axial direction of the fan protection cover 13. The filter holes 131 can be arranged at any position on the peripheral wall of the fan protection cover 13, and when the filter holes 131 on the peripheral wall of the fan protection cover 13 are arranged at the positions from the second mounting ribs 134 to the air outlets of the ducted fans, wind enters the space between the ducted fans and the fan protection cover 13 through the filter holes 131, passes through the air outlets on the second mounting ribs 134 and then enters the ducted fans.

In another aspect of the present embodiment, the inner peripheral surface of the second mounting rib 134 is provided with an inwardly recessed air passage 1331, and the air passage 1331 cooperates with the outer peripheral surface of the shock pad 12 to form an air passage. That is, when the fan protection cover 13 is sleeved on the outer periphery of the ducted fan, the second mounting rib 134 on the fan protection cover 13 abuts against the shock pad 12, so that the shock pad 12 forms the air gap with the opening blocking column of the air passing groove 1331 on the second mounting rib 134. In this embodiment, a plurality of air vents are disposed on the second mounting ribs 134 at intervals.

In another aspect of this embodiment, the mounting bar includes a first mounting bar 133 and a second mounting bar 134; the second mounting rib 134 is provided at a position upstream of the first mounting rib 133 in the air blowing direction; the filter holes 131 on the peripheral wall of the fan guard 13 are provided between the baffle 132 and the first mounting rib 133. In the solution of the present embodiment, the protruding heights of the first mounting rib 133 and the second mounting rib 134 are the same. According to the scheme of the embodiment, due to the fact that the two mounting ribs are arranged, the duct fan is fixed more firmly.

In a further aspect of this embodiment, the fan protection cover 13 is provided with a first limiting portion 135 and a second limiting portion 1362. Wherein, the first limit part 135 and the second limit part 1362 are provided at the end of the fan protection cover 13 along the air supply direction in an annular protrusion structure extending along the circumferential direction of the fan protection cover 13.

Specifically, the first limiting portion 135 has a first inner surface parallel to the axis of the ducted fan and extending toward the air inlet of the ducted fan, and a second inner surface 1352 connected to the extending end of the first inner surface 1351 and extending radially outward of the ducted fan. The second limiting portion 1362 has a third inner surface 1361 connected to an extending end of the second inner surface 1352 and extending parallel to the first inner surface 1351 in the direction of the air intake, and a fourth inner surface 1362 connected to an extending end of the third inner surface 1361 and extending radially outward of the ducted fan.

In this embodiment, the second inner surface 1352 abuts against the end face of the damper pad 12 near the air outlet end, and the third inner surface 1361 abuts against the outer circumferential surface of the damper pad 12.

In the present embodiment, the protruding height of the first and second mounting ribs 133, 134 is the same as the height of the fourth inner surface 1362. The baffle 132, the first mounting rib 133, the second mounting rib 134, the first limiting portion 135 and the second limiting portion 1362 together apply an compressive force to the shock pad 12 to secure the ducted fan in the fan guard 13.

In a further aspect of this embodiment, two rings of raised structures 121 are spaced apart on the shock pad 12, and the mounting ribs include a first mounting rib 133 and a second mounting rib 134. The first mounting rib 133 and the second mounting rib 134 are respectively abutted against the two rings of the protruding structures 121 on the shock pad 12.

Because the first limiting portion 135 and the second limiting portion 1362 are disposed at the end of the fan protection cover 13 along the air supply direction and are in an annular protrusion structure extending along the circumferential direction of the fan protection cover 13, and the first limiting portion 135 abuts against the outer end surface of the shock pad 12, the second limiting portion 1362 abuts against the outer circumferential surface of the shock pad 12, thereby forming a stepped sealing structure of the shock pad 12 and the fan protection cover 13 at the end of the ducted fan in the air supply direction. In the present embodiment, the protrusion heights of the first and second mounting ribs 133, 134 are the same as the protrusion height of the second stopper 1362.

In the solution of the embodiment, the ducted fan has a ducted fan housing, and the ducted fan housing is formed with an air outlet. The fan protection cover 13 is provided with an air supply outlet, the air supply outlet is positioned at the outer side of an air outlet of the ducted fan, and the inner diameter of the air outlet of the ducted fan is smaller than that of the air supply outlet. And the air supply outlet is formed by a first stopper 135 provided at the end of the fan guard 13. And the damping pad 12 is sleeved outside the duct fan shell, and the inner diameter of the duct fan shell is smaller than the inner diameter of the damping pad 12. That is, the inner diameter of the duct fan casing is smaller than the inner diameter of the first limiting portion 135, the inner diameter of the damper 12 is also smaller than the inner diameter of the first limiting portion 135, and the damper 12 and the first limiting portion 135 form a communication structure with an enlarged opening along the air outlet direction.

According to the scheme provided by the embodiment, the air passing hole is formed between the second mounting rib and the periphery of the duct fan shell, and after air enters the interval between the duct fan and the fan protection cover through the air inlet hole in the peripheral wall of the fan protection cover, the air passing hole on the second mounting rib and the sawtooth-shaped structure smooth groove penetrate through the duct fan.

The scheme of the embodiment further comprises: a mount provided at a position downstream of the fan guard 13 in the air blowing direction, the mount having a ventilation chamber inside. The end surface of the fixing member, which is close to the air supply device, is abutted against the first limiting portion 135. The inner diameter of the first limiting part 135 is smaller than the diameter of the ventilation cavity of the fixing piece, and the first limiting part 135 and the fixing piece form a communication structure with gradually enlarged openings along the air outlet direction. Specifically, the fixing element 2 includes a first connection portion and a second connection portion, where the first connection portion includes a first portion 211 and a second portion 212, and where the second portion 212 contacts the first limiting portion 135. The fixing piece 2 is provided with an anti-misplug groove 25, and the anti-misplug groove 25 is inserted into a limit rib 7611 on the protective cover 9 to firmly fix the fixing piece on the protective cover 9.

According to the scheme provided by the embodiment, all parts of the air outlet of the ducted fan form a communication structure with an enlarged inner diameter, namely the shock pad 12, and the first limiting part 135 and the fixing piece form a communication structure with an enlarged inner diameter, so that wind can smoothly enter the air duct of the dish washer.

In the preferred scheme of the embodiment, the inner diameter of the ventilation cavity formed on the fixing piece is gradually increased along the air supply direction, and a horn mouth shape is formed, so that ventilation is smoother.

Example two

The embodiment provides a drying device of a dish washer. The drying device comprises the air supply device in the embodiment.

As shown in fig. 6 and 11, the drying apparatus in this embodiment includes an air supply device, a fixing member, and a heating module, which are sequentially connected.

Specifically, the drying device of the dishwasher comprises a protective cover 9, an air supply device 1, a fixing piece 2 and a heating module 3. The fan installation cavity and the heating module installation cavity that have axial intercommunication in the safety cover 9, the fan installation cavity has the air intake, the heating module installation cavity has the air outlet, drying device passes through the air outlet and the wind channel of heating module installation cavity and the inside intercommunication of the inner bag of dish washer, duct fan 11 installs in the fan installation cavity of safety cover 9, the mounting 2 and the heating module 3 that have the setting of arranging along axial direction in the heating module installation cavity, mounting 2 is located between heating module 3 and duct fan 11, heating module 3 is connected with mounting 2, be fixed in the heating module installation cavity through mounting 2, mounting 2 has the ventilation chamber that runs through the setting along the axial, duct fan 11 is inhaled air and is supplied with air along axial direction to the heating module installation intracavity from the air intake, the wind from duct fan 11 is heated by heating module 3 and is formed hot-blast after passing the ventilation chamber, hot-blast enters into the inner bag of dish washer from the air outlet end of heating module installation cavity.

As shown in fig. 7 and 8, in the above-mentioned scheme, the ducted fan 11 is not directly contacted with the fixing member 2 and the heating module 3, but the ducted fan 11 and the fixing member 2 are respectively fixed in the fan installation cavity and the heating module installation cavity to realize the relative fixation of the two positions, thereby realizing the relative fixation of the positions between the ducted fan 11 and the heating module 3, obviously reducing the influence of the vibration of the fan on the heating module 3, effectively avoiding the heat conduction of the heating module 3 to the ducted fan 11, and prolonging the service life of the ducted fan 11.

Further, in order to secure the heating efficiency of the heating module 3, the heating module 3 includes a heating wire 33, a support 31, and a housing 32; the support 31 is provided extending axially along the housing 32, has a first projection 3111 provided in a radial direction of the housing 32, and is connected to the housing 32 by the first projection 3111; the heating wire 33 is spirally wound on the support 31 in the axial direction.

Further, for guaranteeing the stability of the heating module 3, the fixing piece 2 includes a first connecting portion 21 and a second connecting portion 22 which are integrally arranged, the fixing piece 2 is fixedly connected with the heating module installation cavity through the first connecting portion 21, and is fixedly connected with the heating module 3 through the second connecting portion 22, so that the heating module 3 is fixed on the fixing piece 2, and is stably fixed in the heating module installation cavity through the fixing piece 2.

Further, the first connecting portion 21 has an outer diameter corresponding to an inner diameter of the heating module mounting chamber and is fitted into an end portion of the heating module mounting chamber on a side connected to the fan mounting chamber.

Further, the second connecting portion 22 protrudes or is recessed from the first connecting portion 21, the outer diameter of the second connecting portion 22 is smaller than or equal to the inner diameter of the housing 32, and one end of the housing 32 is sleeved on the second connecting portion 21, so that the heating module 3 is fixed in the heating module mounting cavity.

As a specific embodiment of the present utility model, the side of the first connection portion 21 near the heating module 3 protrudes outward in the axial direction to form a second connection portion 22. The second connection portion 22 is coaxially provided with the first connection portion 21, and the ventilation chamber is provided to penetrate from the centers of the first connection portion 21 and the second connection portion 22. The size and shape of the second connecting portion 22 are matched with the size of the shell 32, the second connecting portion 22 is at least partially inserted into the heater sleeve shell, when the shell 32 and the second connecting portion 22 are connected in place, the outer peripheral wall of the second connecting portion 22 is attached to the inner peripheral wall of the shell 32, connection between the fixing piece 2 and the shell 32 is achieved, and as the second connecting portion 22 stretches into the shell 32, all wind from the wind outlet end of the fan flows to the heating module 3 without leakage, and the air supply efficiency is improved.

Preferably, in the present embodiment, the cross section of the second connecting portion 22 is rectangular, the cross section of the housing 32 is a square ring with a size matching the cross section of the second connecting portion 22, and the shape and size of the inside of the square ring are the same as the cross section of the second connecting portion 22.

In order to further improve the connection stability between the second connection portion 22 and the housing 32, the peripheral wall of the second connection portion 22 is provided with a protruding clamping protrusion 221, and correspondingly, the inner wall of the housing 32 is provided with a bayonet 326 matching the shape of the clamping protrusion 221, when the second connection portion 22 is matched with the housing 32 in place, the clamping protrusion 221 is just clamped into the bayonet 326, and the clamping protrusion 221 and the bayonet 326 are matched to avoid separation along the axial direction.

In this embodiment, the cross-sectional shape of the clamping protrusion 221 is rectangular, and the clamping protrusion 221 with a rectangular cross-section cooperates with the bayonet 326 to connect the second connecting portion 22 with the housing 32, so as to avoid relative rotation between the housing 32 and the second connecting portion 22, thereby further improving connection stability.

Further, a first space is formed between the clamping protrusion 221 and the first connecting portion 21, a second space is formed between the bayonet 326 and the end portion of the housing 32, which is close to the fixing member 2, and the first space and the second space are the same in size, i.e. when the second connecting portion 22 is matched with the housing 32 in place, one end of the housing 32, which is close to the fixing member 2, abuts against the first connecting portion 21, so that the connection stability is further improved; preferably, the clamping protrusion 221 is disposed closely to the extending end of the second connecting portion 22 and is flush with the extending end of the second connecting portion 22.

Further, one end of the heating module installation cavity, which is close to the fan installation cavity, is provided with a stop wall 137 formed by radial shrinkage, the shrinkage end of the stop wall 137 forms an air supply outlet, the heating module installation cavity is communicated with the fan installation cavity through the air supply outlet, the section of the first connecting part 21 is matched with the section in the heating module installation cavity, and when the fixing piece 2 is installed in place in the heating module installation cavity, the first connecting part 21 is abutted with the stop wall 137, so that the limit of the installation position of the fixing piece 2 is realized; in order to further improve the installation stability of the fixing piece 2, the inner wall of the installation cavity of the heating module is provided with the convex rib 74 protruding inwards, the convex rib 74 is parallel to the stop wall 137 and is spaced from the stop wall 137, the first connecting part 21 is fixed between the stop wall 137 and the convex rib 74, two sides of the first connecting part are respectively abutted with the stop wall 137 and the convex rib 74, the limit of the fixing piece 2 in the installation cavity of the heating module is realized through the convex rib 74, and the convex rib 74 can be set to be a convex rib protruding from one side according to actual use requirements or an annular rib circumferentially arranged along the installation cavity of the heating module.

Preferably, the stop wall 137 is in transitional cambered surface smooth connection with the peripheral wall of the heating module mounting cavity, and correspondingly, the side surface of the first connecting part 21 propped against the stop wall 137 and the outer side surface propped against the inner wall of the heating module mounting cavity are in transitional connection with the smooth cambered surface, so that the contact area of the first connecting part 21 and the shell is increased, and the connection stability of the fixing part 2 and the heating module mounting cavity is further improved.

Preferably, when the ribs 74 are ribs, at least two ribs 74 are provided along the circumferential direction of the heating module mounting cavity, and the distances between the ribs 74 and the stop wall 137 are equal; more preferably, the plurality of ribs 74 are arranged in pairs, the ribs 74 arranged in pairs being arranged centrally with respect to the axis of the heating module mounting chamber.

Further, a gap is formed between the outer peripheral wall of the shell 32 and the inner wall of the heating module installation cavity, and the protective cover 9 is prevented from being deformed or damaged due to the existence of the gap due to the fact that the temperature of the shell 32 is high, so that the service life is prolonged.

Further, because the temperature of the heating wire 33 is higher, simply increasing the distance between the housing 32 and the inner wall of the heating module installation cavity does not sufficiently prevent heat from being emitted and conducted to the wall of the air outlet cavity, there is still a hidden danger that the heating module installation cavity is thermally deformed or damaged, and therefore, the housing 32 is made of a heat insulating material; the inner wall of the housing 32 is also coated with a heat-insulating coating to further enhance the heat-insulating effect.

Further, in order to ensure the fixing effect of the protection cover 9 on the ducted fan 11 and the fixing piece 2, the protection cover 9 is preferably made of hard materials, the shape of the fan installation cavity is a cylindrical cavity matched with the shape of the ducted fan 11, the fan installation cavity and the heating module installation cavity are connected through a second limiting part 136, the second limiting part 136 is integrally hollow and cylindrical and is provided with a channel penetrating through the second limiting part 136, the air outlet end of the fan installation cavity is connected with the air inlet end of the heating module installation cavity through the channel, one end of the second limiting part 136 connected with the heating module installation cavity is connected to a stop wall 137, an air supply outlet formed on the stop wall 137 is accommodated in the interior, the diameter of the fan installation cavity is larger than that of the channel on the second limiting part 136, one end of the second limiting part 136 connected with the fan installation cavity is provided with an opening which is gradually opened, and the air outlet end of the fan installation cavity is connected with the opening; preferably, the second limiting portion 136 is in smooth transition connection with the fan mounting cavity through the opening.

Further, the fan installation cavity, the second limiting part 136 and the heating module installation cavity are coaxially arranged, so that the axis of the ducted fan 11 is mutually overlapped with the axis of the fixing piece 2 and the axis of the heating module 3; the diameter of the air supply outlet on the stop wall 137 is slightly smaller than the diameter of the channel in the second limiting part 136, so that the air supply outlet on the stop wall 137, the channel in the second limiting part 136 and the inner wall of the heating module mounting cavity form a stepped structure along the axial direction.

Further, the outer diameter of the fan installation cavity is smaller than that of the heating module installation cavity, the fan installation cavity is in transitional connection with the heating module installation cavity through a stop wall 137, and an air supply outlet is arranged between the fan installation cavity and the heating module installation cavity.

Further, the distances between the inner peripheral wall of the air supply outlet, the inner peripheral wall of the ventilation cavity and the shell 32 and the axis are sequentially increased, so that a stepped structure which is involute is formed, and the working efficiency of the drying device is further improved.

Further, in order to enhance the convenience of installation of the ducted fan 11, the fixing member 2 and the heating module 3, the protection cover 9 is divided into a protection cover base and a cover body with symmetrical upper and lower structures along the axis of the fan installation cavity and the heating module installation cavity, the connection part of the protection cover base and the cover body is respectively provided with a buckle 762 and a seat body groove 45, when the cover body is closed on the protection cover base, the ducted fan 11, the fixing member 2 and the heating module 3 are stably installed in the protection cover 9, and the protection cover base and the cover body are matched and fixed through the buckle 762. In this embodiment, the protective cover 9 includes a fan protective cover 13 and a heating module protective cover 7.

The heating module is described in detail below.

The heating module comprises a heating module protective cover 7 and a heater arranged in the heating module protective cover 7, wherein the heater comprises a supporting piece 31, a heating wire 33 and a shell 32.

The heating wire 33 is mounted on the support 31.

The supporting member 31 is disposed in the housing 32, and the housing 32 is disposed corresponding to the air supply device.

A gap is left between the heating wire 33 and the inner wall of the housing 32, and the wind blown by the ducted fan 11 passes through the gap and the heating wire 33.

The dish washer still includes wind channel and inner bag, the air outlet of heater and the air inlet end intercommunication in wind channel, the air outlet end in wind channel with the inner bag intercommunication. The heating wire 33 can instantaneously generate larger heat, the ducted fan 11 drives air flow to pass through the heating wire 33 for heating, and then the air flow enters the liner along the air channel for drying the inside of the liner.

In this embodiment, the dish washer adopts the cooperation of duct fan 11 and heater, and the duct fan can produce great wind-force, and the heater strip 33 of heater can release great heat, and the hot-blast that the wind-force is great can be formed in the cooperation of two, and hot-blast entering dish washer inner bag through the wind channel can dry the tableware, and drying effect is preferred.

Example III

The embodiment provides an air duct device of a dish washer.

The scheme provided by the embodiment comprises the air supply device, the fixing piece and the heating module.

The scheme of this embodiment still includes dish washer wind channel, including wind channel 5, wind channel 5 still includes air intake 512 and air outlet 5221, air intake 512 department has set up guide part 4, guide part 4's bore reduces gradually from air intake 512 and air outlet 5221, on the one hand guide part 4's setting can make the wind velocity of flow that blows from heating module 3 become fast, drying efficiency has been increased, the consumption of energy has been reduced, on the other hand guide part 4's horn mouth design can be when guaranteeing to blow from heating module 3 the hot-blast velocity of flow to accelerate, reduce the hot-blast impact to wind channel 5 inner wall, the windage that has reduced it and brought, thereby noise has been reduced, user's experience effect has been promoted.

As shown in fig. 9 and 10, the flow guiding portion 4 is a pipe with different diameters at both ends, one end with a larger diameter is a front tuyere 41, one end with a smaller diameter is a rear tuyere 42, and the radial cross section of the flow guiding portion 4 is a rectangle with four corners in an arc shape.

Specifically, the radial section of the air guiding portion 4 is a smaller rectangle wrapped by a larger rectangle, the front air opening 41 is a rectangle with a larger radial section, four corners are circular arcs corresponding to the air outlet end 72 of the protection cover, the rear air opening 42 is a rectangle with a smaller radial section, the shape of the rectangle corresponds to the radial section of the air supplying duct 51, and the rectangular radial section of the rear air opening 42 is not centered to the rectangular radial section of the front air opening 41, but is deviated to the position of the upper wall of the air guiding portion.

Specifically, the air duct 5 extends up and down, the air guiding portion 4 is disposed at the bottom of the air duct 5, and the inclination angle of the upper wall 43 of the air guiding portion that is retracted inwards from the front air opening 41 and the rear air opening 42 is smaller than the inclination angle of the lower wall 44 of the air guiding portion that is retracted inwards from the front air opening 41 and the rear air opening 42.

Specifically, the embodiment of the utility model uses the ducted fan 11 to provide hot air, the ducted fan 11 has the characteristics of high rotating speed and high air quantity, and meanwhile, the high air quantity also brings great pressure to the flow guiding part 4 and the air duct 5, so that the service lives of the flow guiding part 4 and the air duct 5 are reduced.

Specifically, the ducted fan 11 is disposed in a protruding manner outside the air inlet end 71 of the protective cover 7, is coaxial with the heating module 3, and is fixed in the protective cover 7, and a ventilation cavity is disposed in the middle of the fixing member 2 in order to allow air blown by the ducted fan 11 to enter the heating module 3.

Specifically, the ventilation area of the ventilation cavity at least needs to ensure that the wind blown from the ducted fan 11 flows into the heating module 3 from the cavity, so that the situation that the high-speed wind is directly blown to the fixing piece 2 due to insufficient ventilation area of the ventilation cavity is avoided, damage is caused to the fixing piece 2, and the service life of the fixing piece 2 is shortened.

Preferably, the flow guiding portion 4 is provided in a form inclined upward from the front tuyere 41 and the rear tuyere 4, and an axis of the flow guiding portion 4 extends inclined upward from the front tuyere 41 and the rear tuyere 42.

Specifically, the upper wall 43 of the guiding part can be parallel to the upper wall of the protective cover from the direction of the front air opening 41 and the rear air opening 42, and the lower wall 44 of the guiding part is contracted inwards from the direction of the front air opening 41 and the direction of the rear air opening 42 to be in contact with the air supply duct 51, on one hand, the upper wall 43 of the guiding part is parallel to the upper wall of the protective cover, so that high-speed hot air blown from the heating module 3 from the upper part can be smoothly blown into the air supply duct 51, the impact of the high-speed hot air on each component is better weakened, the wind resistance is reduced, and the noise is reduced.

Specifically, the two side walls 45 of the deflector 4 are inclined at the same angle inwardly from the front tuyere 41 and the rear tuyere 42.

Specifically, the side of the circumference wall of the guiding part 4 is the cambered surface 46, the direction from the front air inlet 41 to the rear air inlet 42 is the cambered surface 46 with gradually reduced width, the two sides of the cambered surface 46 of the upper half are connected with the upper wall 43 and the side wall 45 of the guiding part, the two sides of the cambered surface 46 of the lower half are connected with the lower wall 44 and the side wall 45 of the guiding part, on one hand, the cambered surface 46 is arranged to correspond to the protective cover, the overall aesthetic property is improved, and on the other hand, the arc structure can also effectively reduce the impact of hot air, and the overall vibration is reduced so as to reduce noise.

The embodiment of the utility model also provides a connection mode of the heating module 3 and the air duct 5.

Specifically, there is a protective cover 7, and the heating module 3 is installed in the protective cover 7, and there is a space between the heating module 3 and the protective cover 7, and this space can avoid the direct contact between the heating module 3 and the protective cover 7, resulting in the heat generated by the heating module 3 burning out the protective cover 7, and causing danger.

Specifically, the material of the protective cover 7 should be selected from a heat insulating material or a heat insulating material, and the protective cover 7 should have a certain strength.

Preferably, the material of the protecting cover 7 in the embodiment of the present utility model is plastic, the protecting cover 7 is used for fixing the ducted fan 11, the heating module 3 and the connecting air duct 5, and a material with high strength, shock resistance and corrosion resistance is needed to be used as the protecting cover 7, while the plastic has the advantages of light weight, low price, good chemical stability, shock resistance, corrosion resistance, high specific strength and the like, and becomes the preferred material of the protecting cover 7.

Preferably, the protective cover 7 can be provided with a heat-insulating interlayer or a heat-insulating layer is covered outside the protective cover 7, so that the heat-insulating effect is achieved on one hand; on the other hand, the heat dissipation of the heating module 3 is also reduced.

Specifically, the heating module 3 is installed at one end of the air inlet 512 of the air duct 5, the heating module 3 is installed in the protective cover 7, and a gap is left between the protective cover 7 and the heating module 3, so that the connection between the heating module 3 and the air duct 5 can be completed by directly connecting the protective cover 7 with the air inlet 512 of the air duct 5.

Preferably, the protection cover 7 is detachably mounted at one end of the air inlet 512, on one hand, the assembly of the air duct 5 and the heating module 3 can be realized by arranging all parts of the main body to be matched in a plugging, clamping and other modes, screws are not required to be used in the whole assembly process, so that the assembly efficiency is improved, and on the other hand, the assembly mode of detachable connection is convenient for later maintenance, and all parts are taken out under the condition of not damaging the whole.

Specifically, the protection cover 7 includes an air inlet end 71 and an air outlet end 72, and the air outlet end 72 of the protection cover 7 is inserted into the air inlet 512 or sleeved outside the air inlet 512.

Specifically, establish safety cover 7 cover outside air intake 512, connect through buckle structure between safety cover 7 and the wind channel 5, buckle structure includes: a protrusion provided on one of the protection cover 7 and the air inlet 512; the bayonet is arranged on the other of the protective cover 7 and the air inlet 512 and is matched with the protective cover bulge 73.

Preferably, the protection cover 7 is a cuboid, the edges of the cuboid, which are parallel to the axis, are provided with arc chamfers, the bayonets are arranged on one side, close to the air duct 5, of the protection cover 7, the bayonets are uniformly arranged along the peripheral wall of the protection cover 7, and the protrusions are arranged on the outer surface of the air inlet 512 and are in one-to-one correspondence with the protrusions.

In some possible embodiments, one end of the protective cover 7 with a bayonet is sleeved outside the air duct 5, the inner surface of the protective cover 7 is attached to the outer surface of the air inlet 512 of the air duct 5, and each protrusion and the bayonet are mutually matched to enable the heating module 3 to be connected with the air duct 5, so that on one hand, the detachable connection of the heating module 3 and the air duct 5 is achieved, and on the other hand, the protective cover is made of plastic material, has good deformation quantity and is labor-saving in installation.

The foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited to the above-mentioned embodiment, but is not limited to the above-mentioned embodiment, and any simple modification, equivalent change and modification made by the technical matter of the present utility model can be further combined or replaced by equivalent embodiments within the scope of the technical proposal of the present utility model without departing from the scope of the technical proposal of the present utility model.

Claims (10)

1. An air supply device of a dish washer is characterized by comprising a ducted fan and a fan protection cover;

the fan protection cover comprises a sleeve structure sleeved on the outer peripheral surface of the ducted fan shell;

the ducted fan is provided with a ducted fan shell, and the inner peripheral surface of the fan protection cover is arranged at intervals with the outer surface of the ducted fan shell;

and a filter hole is formed in the peripheral wall of the fan protection cover.

2. The air supply device of a dishwasher of claim 1, further comprising:

the damping pad is sleeved on the periphery of the ducted fan shell;

the installation muscle, the bellied setting of installation muscle is in on the inboard surface of fan safety cover, and for along fan safety cover circumference extension's annular structure, the periphery and the installation muscle looks butt of shock pad make the inner peripheral surface of fan safety cover and the surface interval setting of shock pad.

3. The air supply device of a dishwasher of claim 2, wherein the fan guard comprises a baffle plate disposed adjacent to an air inlet end of the ducted fan, the baffle plate is perpendicular to an air inlet direction, the baffle plate has a gap with the shock pad, and the baffle plate has a filtering hole.

4. A blowing device of a dishwasher according to claim 3, wherein the mounting ribs comprise first mounting ribs spaced apart from the baffle plate in the blowing direction;

And the filter holes on the peripheral wall of the fan protective cover are arranged between the baffle and the first mounting rib.

5. The air supply device of a dishwasher of claim 4, wherein the mounting ribs further comprise second mounting ribs disposed between the baffle and the first mounting ribs;

an air outlet is arranged between the second mounting rib and the periphery of the shock pad;

the air outlet extends along the axial direction of the fan protection cover and penetrates through the second mounting rib.

6. The air supply device of the dish washer according to claim 5, wherein the second mounting rib is provided with an inwardly concave air passing groove on an inner circumferential surface thereof, and the air passing groove cooperates with an outer circumferential surface of the damper to form the air passing opening.

7. The air supply device of a dishwasher according to any one of claims 3 to 6, wherein the shock pad is extended in the air supply direction, and one end of the shock pad is extended to the outside of the air inlet end of the ducted fan;

and the outer periphery edge of the shock pad is provided with a saw-tooth structure, and the top end of the saw-tooth structure is abutted with the baffle plate.

8. The air supply device of a dishwasher according to claim 1, wherein a plurality of filter holes are provided on a peripheral wall of the fan guard, and the plurality of filter holes are spaced apart along a circumferential direction and/or an axial direction of the peripheral wall of the fan guard.

9. The air supply device of the dishwasher of claim 8, wherein the fan guard is provided with a first limit portion and a second limit portion;

the first limiting part is provided with a first inner surface which is parallel to the axis of the ducted fan and extends towards the air inlet direction of the ducted fan, and a second inner surface which is connected with the extending tail end of the first inner surface and extends outwards along the radial direction of the ducted fan;

the second limiting part is provided with a third inner surface connected with the extending end of the second inner surface and extending towards the air inlet in parallel with the first inner surface, and a fourth inner surface connected with the extending end of the third inner surface and extending outwards along the radial direction of the ducted fan;

the second inner surface is abutted with the end face, close to the air outlet end, of the shock pad;

the third inner surface is abutted with the outer peripheral surface of the shock pad.

10. A dishwasher, characterized in that it comprises an air supply device according to any one of the preceding claims 1-9.