CN220369965U - Heating module protection cover structure of dish washer and dish washer - Google Patents

Abstract

The utility model discloses a heating module protection cover structure of a dish washer and the dish washer, wherein the protection cover structure comprises: the protective cover base comprises a first groove body which extends for a certain length and is provided with an upper opening, one end of the first groove body is an open end, the other end of the first groove body is an end face provided with an air inlet opening, and a limiting part is arranged in the first groove body and close to the end face; the cover body is buckled with the protective cover base. According to the protective cover structure provided by the utility model, the limiting part is arranged on the protective cover base, and the cover body tightly matched with the protective cover base is arranged, so that the opening of the fixing piece positioned in the protective cover structure is not deviated relative to the opening of the protective cover in the working process of the heater, the position of the fan duct to the heater is not deviated, and the high drying efficiency of the dish washer is ensured.

Description

Heating module protection cover structure of dish washer and dish washer

Technical Field

The utility model belongs to the field of dish-washing machine heaters, and particularly relates to a heating module protection cover structure of a dish-washing machine and the dish-washing machine.

Background

At present, the drying principle of most dish washers is as follows: the air blown out by the fan passes through the heating part and the air channel and enters the cavity of the dish-washing machine, so that the temperature rise and the evaporation of water in the dish-washing machine are realized. In the process, the rotating speed of the fan and the temperature of the heating part have great influence on the drying effect of the dish washer.

And wherein, the effect of the safety cover of quick drying dish washer heater is for connecting fan, mounting and the heating portion of fixing wherein, the heating portion includes heater strip heater or PTC heater, the heating portion passes through the mounting and links to each other with the fan.

Most of the fixing pieces are ceramic seats, and most of the ceramic composite materials have a thermal expansion coefficient of 7.0-9.0 at 25-700 ℃, so that the fixing pieces are heated to be increased in the working process of the heating part.

At present, the protective cover of some heaters does not have a structure for preventing the fixing piece from thermal expansion, so that the fixing piece is easy to wear and deform, and the service life is lower; after the mounting in the safety cover structure of other heaters is heated and expanded, its open position can take place the skew for the opening of safety cover to can't guarantee that the fan duct does not take place the skew to the position of heater, reduced dish washer drying efficiency.

In view of this, the present utility model has been made.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art, and provides a protective cover structure of a heating module of a dish washer, wherein a limiting part is arranged on a protective cover base, and a cover body tightly matched with the protective cover base is arranged on the protective cover base, so that an opening of a fixing piece positioned in the protective cover is not deviated relative to the opening of the protective cover in the working process of a heater, the position of a fan duct on the heater is not deviated, and the high drying efficiency of the dish washer is ensured.

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

the utility model provides a heating module protective cover structure of dish-washing machine, comprising,

the protective cover base comprises a first groove body which extends for a certain length and is provided with an upper opening, one end of the first groove body is an open end, the other end of the first groove body is an end face provided with an air inlet opening, and a limiting part is arranged in the first groove body and close to the end face;

the cover body is buckled with the protective cover base.

According to the utility model, the limiting part and the cover body tightly matched with the protective cover base are arranged on the protective cover base, so that the limiting of the clearance of the fixing piece is realized, the fan opening on one side of the opening of the protective cover base is strictly opposite to the opening of the fixing piece on the other side, the opening of the fixing piece is not deviated relative to the opening of the protective cover after the fixing piece is heated and expanded, the position of the fan duct to the heater is not deviated, and the high drying efficiency of the dish washer is ensured.

The utility model further provides the following scheme: the first groove body is provided with two side walls which are arranged in parallel in an extending mode, and a bottom wall which is connected with the two side walls;

The limiting part comprises convex ribs protruding from the side walls, the convex ribs are arranged at intervals with the end faces, and an installation space is formed between the convex ribs and the end faces.

In the scheme, the convex ribs arranged in the first groove body form the installation space, so that the fixing piece is arranged in the installation space, the accuracy of the setting position of the fixing piece is ensured, and a gap is reserved between the fixing piece and the limiting part.

The utility model further provides the following scheme: the convex ribs are of plate-shaped structures parallel to the end faces.

In the scheme, the plate-shaped convex ribs are parallel to the end face, so that the convex ribs and the end face are arranged at intervals to form an installation space for facilitating the installation of the fixing piece.

The utility model further provides the following scheme: the convex rib extends from the upper side opening of the first groove body to the bottom wall.

In the scheme, the convex ribs extend from the opening to the bottom wall, and under the condition of guaranteeing the limiting effect, the production of the protective cover through injection molding and other processes is facilitated.

The utility model further provides the following scheme: the limiting part further comprises a limiting rib, and the limiting rib is arranged on the inner wall of the first groove body forming the installation space.

In the above scheme, through set up spacing muscle on the inner wall of installation space, realized that the safety cover structure prevents that the mounting from inserting and further fixing the effect of mounting.

The utility model further provides the following scheme: the first groove body comprises a bottom wall and a side wall, and the limit rib extends from the upper side opening of the first groove body to the bottom wall.

In the scheme, the limiting ribs extend from the opening to the bottom wall, so that the protective cover is convenient to produce through injection molding and other processes, the fixing piece is convenient to install and fix, and space is provided for the thermal expansion of the fixing piece.

The utility model further provides the following scheme: the protective cover base further comprises a protective cover protrusion and a protective cover connecting part, wherein the protective cover protrusion is arranged on the outer surface of the first groove body in a protruding mode;

the protective cover bulge is arranged in a region close to the open end;

the first groove body comprises a bottom wall and a side wall, and the protective cover connecting part is arranged on the side wall and is close to the area of the bottom wall.

In the scheme, the protection cover is convenient to install or fix in the dish washer by arranging the protection cover bulge and the protection cover connecting part.

The utility model further provides the following scheme: the first groove body is provided with two side walls which are arranged in parallel in an extending mode;

the protective cover base also comprises a wire passing groove, wherein the wire passing groove is arranged at the joint of one side wall and the end face and penetrates through the inner side and the outer side of the first groove body.

In the scheme, the wire through groove is arranged, so that the wire penetrates into the protective cover and is connected with the heater, and the arrangement of the wire of the heater is facilitated.

The utility model further provides the following scheme: the cover body comprises a second groove body which extends for a certain length and is provided with an opening at the lower side, one end of the second groove body is an opening end, the other end of the second groove body is an end face provided with an air inlet opening, and the outer wall and the inner wall of the cover body are provided with a height difference along the direction perpendicular to the bottom wall so as to form a first clamping part;

the outer wall and the inner wall of the protective cover base are provided with a height difference along the direction perpendicular to the bottom wall to form a second clamping part;

the outer wall of the first groove body is provided with a buckle, and the buckle is buckled with the cover body;

preferably, the bottom wall of the first groove body is perpendicular to the two side walls, and the two side walls are respectively provided with two buckles.

In the scheme, the protection cover base and the cover body are tightly buckled through the buckle, the first clamping part and the second clamping part, so that the installation of the cover body is convenient, and the heat dissipation of the heating part in the protection cover base and the cover body in the working process is reduced.

The utility model also provides a dishwasher comprising a heater guard structure as described above.

By adopting the technical scheme, compared with the prior art, the utility model has the following beneficial effects.

According to the utility model, the limiting part and the cover body tightly matched with the protective cover base are arranged on the protective cover base, so that the limiting of the clearance of the fixing piece is realized, the fan opening on one side of the opening of the protective cover base is strictly opposite to the opening of the fixing piece on the other side, the opening of the fixing piece is not deviated relative to the opening of the protective cover after the fixing piece is heated and expanded, the position of the fan duct to the heater is not deviated, and the high drying efficiency of the dish washer is ensured.

According to the utility model, the production of the protective cover through processes such as injection molding and the like, the installation of the cover body and the installation of the fixing piece are facilitated through the limiting part, the protective cover bulge and the protective cover connecting part, and the production and installation efficiency is improved.

According to the utility model, the base of the protective cover is tightly buckled with the cover body, so that heat dissipation of the heating part in the working process is reduced, and the optimal drying effect of the heater including wind speed and drying temperature is further ensured.

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 protective cover structure of a heating module of a dishwasher according to the present utility model;

FIG. 2 is a schematic view of a heating module employing a protective cover base structure according to the present utility model;

FIG. 3 is a schematic view of a heating module employing a protective cover structure according to the present utility model;

FIG. 4 is a schematic diagram of the cooperation of the present utility model and a heater;

FIG. 5 is a schematic view of a fastener according to an embodiment of the present utility model;

FIG. 6 is a schematic diagram of a heating module according to an embodiment of the utility model;

FIG. 7 is a schematic view of a fastener according to a third embodiment;

fig. 8 is a schematic diagram of an air supply device, a fixing member and a heating module connected in sequence in a sixth embodiment of the present utility model.

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.

As shown in figures 1 to 3, the limit part and the cover body tightly matched with the protective cover base 76 are arranged on the protective cover base 76, so that the limit of a gap on a fixing piece is realized, the fan opening on one side of an opening of the protective cover base 76 is strictly opposite to the opening of the fixing piece on the other side, the condition that the opening of the fixing piece is not deviated relative to the opening of the protective cover after the fixing piece is heated and expanded is met, the position of a fan duct to a heater is not deviated, and the high drying efficiency of the dish washer is ensured.

Example 1

In this embodiment, as shown in fig. 1 to 3, there is provided a heating module protection cover structure of a dishwasher, including: the protective cover base 76 comprises a first groove body 761 which extends for a certain length and is provided with an upper side opening, one end of the first groove body 761 is an opening end, the other end of the first groove body 761 is an end face provided with an air inlet opening, and a limiting part is arranged in the first groove body 761 and close to the end face;

and a cover 77, wherein the cover 77 is engaged with the protective cover base 76.

In this embodiment, as shown in fig. 2, a fan, a fixing member 2 and a heating portion are sequentially disposed in the protective cover base 76, wherein the fixing member 2 and the heating portion are disposed in the first slot body 761, the fan is disposed outside an air inlet opening of the first slot body 761, the fixing member 2 is disposed inside the air inlet opening, the heating portion includes a heater wire heater or a PTC heater, the heating portion is fixed on the fixing member 2, and an opening of the heating portion is fixedly connected with an opening of the fixing member 2, and the fixing member 2 is limited by a limiting portion of the first slot body 761, so that the opening of the limiting member 2 is not offset relative to the opening of the protective cover, that is, the opening of the heating portion and the opening of the fan are not offset.

The fan is arranged on the outer side of the air inlet opening of the first groove body 761, the fixing piece 2 is arranged on the inner side of the air inlet opening, the heating part comprises a heating wire heater or a PTC heater, the heating part is fixed on the fixing piece 2, the opening of the heating part is fixedly communicated with the opening of the fixing piece 2, and the fixing piece 2 is limited by the limiting part of the first groove body 761, so that the opening of the limiting piece 2 is prevented from shifting relative to the opening of the protective cover, and the opening of the heating part and the opening of the fan can be prevented from shifting.

In this embodiment, the fan is a ducted fan, and the fixing member 2 is a ceramic base, and the thermal expansion coefficient of the fixing member 2 is 7.0-9.0 at 25-700 ℃, so that the fixing member 2 is expanded by heating in the process of working the heating portion.

In this embodiment, the base 76 and the cover body of the protective cover are made of plastic, and the structure of the protective cover can be obtained cheaply and conveniently by injection molding and other technological means, so that the protective cover has the characteristics of low production cost and good effect.

In this embodiment, the first slot 761 has two side walls extending in parallel, and a bottom wall connecting the two side walls;

the limiting part comprises convex ribs 74 protruding from the side wall, the convex ribs 74 and the end face are arranged at intervals, and an installation space is formed between the convex ribs and the end face.

In this embodiment, the bottom wall of the first groove 761 is perpendicular to the side wall, the end face is perpendicular to the bottom wall and the side wall, the rib 74 is disposed at a position where the side wall approaches the end face, and the protruding rib 74, the side wall, the bottom wall and the end face enclose the installation space.

In this embodiment, the ribs 74 disposed in the first groove 761 form an installation space, so that the fixing member 2 is disposed in the installation space, which ensures the accuracy of the location of the fixing member 2 and also ensures that a gap is formed between the fixing member and the limiting portion.

In this embodiment, the ribs 74 are plate-like structures parallel to the end surfaces.

In this embodiment, the plate-shaped ribs 74 are parallel to the end surface, so that the installation space formed by the ribs 74 and the end surface at intervals is convenient for installing the fixing piece 2, and ensures that the position of the fixing piece 2 in the first groove 761 and the opening position thereof remain unchanged after the fixing piece 2 expands under heating.

In this embodiment, the rib 74 extends from the upper side opening of the first groove 761 to the bottom wall.

In this embodiment, the ribs 74 extend from the opening to the bottom wall, so that the production of the protective cover by injection molding and other processes is facilitated under the condition of ensuring the limiting effect.

In this embodiment, the limiting portion further includes a limiting rib 7611, where the limiting rib 7611 is disposed on an inner wall of the first groove 761 that forms the installation space.

In this embodiment, the bottom wall of the first groove 761 is perpendicular to the side wall, the end face is perpendicular to the bottom wall and the side wall, the limit rib 7611 is disposed at the position where the end face is close to the opening, and is located at one side of the opening, and the clamp connector 76111 with an arc chamfer is disposed at the level of the opening at the upper side, so that the clamp connector 76111 has the function of preventing the fixing piece 2 from being inserted backwards, and the effect that the protective cover structure can prevent the fixing piece 2 from being inserted backwards and further fix the fixing piece 2 is achieved.

In this embodiment, the smooth connection between the clamping connector with the arc chamfer of the limit rib 7611 and the fixing piece 2 not only facilitates the installation and fixing of the fixing piece 2, but also provides a space for the thermal expansion of the fixing piece 2.

In this embodiment, the first slot 761 includes a bottom wall and a side wall, and the limit rib 7611 extends from the upper side opening of the first slot 761 to the bottom wall.

In this embodiment, through spacing muscle 7611 certainly open to the diapire sets up, has made things convenient for the safety cover to pass through the production of technologies such as injection moulding, has made things convenient for the installation and the fixed of mounting 2, still provides the space for the thermal expansion of mounting 2.

In this embodiment, the protecting cover base 76 further includes a protecting cover protrusion 73 and a protecting cover connection portion 78 protruding on the outer surface of the first groove 761;

the shield projection 73 is provided in a region near the open end;

the first groove 761 includes a bottom wall and a side wall, and the protective cover connecting portion 78 is provided on the side wall in a region near the bottom wall.

In this embodiment, the installation or fixation of the shield in the dishwasher is facilitated by providing the shield protrusion 73 and the shield connection 78.

In this embodiment, the first slot 761 has two sidewalls extending in parallel;

the protective cover base 76 further comprises a wire passing groove 763, wherein the wire passing groove 763 is arranged at the joint of one side wall and the end surface and penetrates through the inner side and the outer side of the first groove 761.

In this embodiment, the wire passes through the wire slot 763, so that the wire penetrates into the protective cover and is connected with the heater, thereby facilitating the arrangement of the wire of the heater. Specifically, the wires pass through the wire slots 763 and the openings in the fixing member 2 to connect the heater for power supply. Therefore, the limit bar 7611 also has the function of aligning the through-slot 763 with the opening on the fixing member 2, so as to further reduce the heat dissipation of the heating part during the working process.

In this embodiment, the cover 77 includes a second slot 764 extending a certain length and having an opening at a lower side, one end of the second slot 764 is an open end, the other end is an end surface provided with an air inlet opening, and a height difference is formed between an outer wall and an inner wall of the cover 77 along a direction perpendicular to the bottom wall, so as to form a first clamping portion;

the outer wall and the inner wall of the protective cover base 76 are provided with a height difference along the direction perpendicular to the bottom wall to form a second clamping part 7612;

a buckle 762 is arranged on the outer wall of the first groove 761, and the buckle 762 is buckled with the cover 77;

preferably, the bottom wall of the first slot 761 is perpendicular to two side walls, and the two side walls are respectively provided with two buckles 762.

In this embodiment, the first engaging portion is a height difference formed by the inner wall of the cover 77 being higher than the outer wall, and the second engaging portion 7612 is a height difference formed by the outer wall of the protective cover base 76 being higher than the inner wall. The first clamping portions are disposed at the upper open ends of the two sides and the port of the cover 77, and the second clamping portions 7612 are disposed at the upper open ends of the two sides and the port of the protective cover base 76.

In this embodiment, the protection cover base 76 and the cover body are tightly buckled by the buckle 762, the first clamping part and the second clamping part 7612, so that the installation of the cover body is convenient, and the heat dissipation of the heating part in the cover body in the working process is reduced.

In this embodiment, the side wall of the cover 77 is smoothly curved to form a bottom wall perpendicular to the side wall, and the side wall of the first groove 761 is smoothly curved to form a bottom wall perpendicular to the side wall.

Example two

As shown in fig. 1 to 6, the present embodiment provides a dishwasher, which includes an air duct heating device including a fixing member 2, a heating module 3, and the heating module protection cover structure of the above embodiment.

Specifically, in the embodiment of the present utility model, the protective cover structure of the heating module is the protective cover 7, the heating module 3 is provided with the housing 32, the heating component is disposed inside the housing 32, the housing 32 is installed in the protective cover 7 through the fixing piece 2, a certain gap exists between the inner wall of the protective cover 7 and the outer surface of the housing 32, on one hand, the arrangement of the protective cover 7 can play a role in heat insulation, and the heat loss of the heating module 3 is reduced; on the other hand, the fixing member 2 is provided to prevent the housing 32 of the heating module 3 from being in direct contact with the protection cover 7, so that the protection cover 7 or the dishwasher liner is damaged.

In the embodiment of the present utility model, the protection cover 7 needs to be installed in the air supply device 1 and the heating module 3 to form a whole, a ventilation opening is reserved at the position where the air supply device 1 is connected with the heating module 3 in the protection cover 7, and meanwhile, a ventilation cavity 23 corresponding to the ventilation opening is also arranged on the fixing piece 2, so that the air blown from the fan blows into the heating module 3 through the ventilation opening and the ventilation cavity 23 on the fixing piece 2.

Specifically, the protection cover 7 wraps the air supply device 1 and the heating module 3, so that outside moisture and dust are prevented from entering the protection cover 7, the influence of external factors on the operation of the heating module 3 and the air supply device 1 is avoided, and the service lives of the heating module 3 and the air supply device 1 are prolonged. In the utility model, the air supply device 1 adopts the duct fan, and the noise reduction module can be added on the part where the duct fan is arranged on the protective cover 7 to overcome the noise of the duct fan.

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

In the embodiment of the present utility model, the fixing member 2 includes two parts, a first connecting portion 21 and a second connecting portion 22, the first connecting portion 21 is used for connecting with the protection cover 7, the second connecting portion 22 is used for connecting with the housing 32 and is embedded in one end of the protection cover 7 near the air supply device 1, the first connecting portion 21 and the second connecting portion 22 are arranged on one end of the first connecting portion 21 far away from the air supply device 1, and the first connecting portion 21 and the second connecting portion 22 are integrated.

Specifically, in order to provide a certain gap between the housing 32 mounted in the protective cover 7 and the protective cover 7, the second connecting portion 22 is provided on the first connecting portion 21, the second connecting portion 22 is spaced from the edge of the first connecting portion 21, the end portion of the housing 32 is sleeved on the second connecting portion 22, one end of the housing 32 abuts against the end face of the first connecting portion 21 for supporting the housing 32, the other end is suspended to extend in the radial direction for a certain length, and in the extending direction of the length, the protective cover 7 extends coaxially with a certain gap substantially between the housing 32, and the heating module 3 is suspended in the middle of the protective cover 7.

In the embodiment of the present utility model, the first connecting portion 21 includes a first portion 211 and a second portion 212, the first portion 211 and the second portion 212 are sequentially disposed from the second connecting portion 22 in the direction of the first connecting portion 21, and the first portion 211 and the second portion 212 are integrated.

Specifically, the radial section of the first portion 211 is a rectangle, a chamfer is arranged near one side of the housing 32, the radial section of the first portion 211 is a rectangle, arc chamfers are arranged at four corners of the rectangle, and the shape of the arc chamfers is matched with that of the inner surface of the protective cover 7; the radial cross section of the second portion 212 is an isosceles trapezoid, two waists of the trapezoid slightly protrude outwards, the radial cross section of the second portion 212 gradually decreases along the direction from the first portion 211 to the second portion 212, and the outer periphery of the second portion 212 is a curved surface curved towards the axis of the first connecting portion 21 along the direction from the first portion 211 to the second portion 212 as a whole.

Specifically, the protection cover 7 has an extension 742 coaxial with the housing and extending from the first connection portion 21 to the second connection portion 22 in a direction from a surface edge of the first connection portion 21 near the housing 32 to protect the entire heating module 3; a connection end 741 coaxial with the housing, extending from the second connection portion 22 in the direction of the first connection portion 21 with the edge of the first connection portion 21 near the housing 32 as a starting point, and bending in the direction facing the central axis of the housing.

Specifically, the peripheral surface of the first connecting portion 21 and the end surface of the first connecting portion 21 away from the housing 32 constitute a contact wall 213.

Specifically, the curved surface of the second portion 212, the upper bottom portion having a trapezoidal cross section, forms a contact wall 213 with the inner surface of the protective cover 7 together with the surface of the first portion 211 having a short side in cross section.

Specifically, the inner wall of the connection end portion 741 is fitted to the contact wall 213 of the first connection portion 21.

Specifically, the position that contacts with the tip of safety cover 7 is provided with curved structure, firstly in order to reduce the vibrations that the fan during operation produced to noise reduction, if design square, can lead to producing between mounting 2 and the safety cover 7 during the fan operation and remove, lead to the noise grow.

Preferably, the material of mounting 2 can select ceramic material, and mounting 2 needs to contact with heating module 3, and the heat that heating module 3 produced is very easy to be conducted to other places, and ceramic material has fine thermal-insulated effect, and ceramic material's intensity is very high simultaneously, has reduced the broken condition in mounting 2 junction that leads to through vibrations for a long time in the course of the work, has reduced the potential safety hazard.

In this embodiment of the present utility model, the end portion of the protection cover 7 is provided with a connection end portion 741 extending along the circumferential direction and coaxially arranged with the protection cover 7, the connection end portion 741 corresponds to the first connection portion 21 in size and shape, the first connection portion 21 is installed in the connection end portion 741, and the contact wall of the first connection portion 21 is attached to the inner surface of the connection end portion 741.

Specifically, the protection cover 7 is divided into an upper part and a lower part, the protection cover 7 is connected through a clamping structure arranged at the edge of the two parts, and the fixing piece 2 connected with the shell 32 is placed in the connecting end 741 in the protection cover 7 in the process of connecting the upper protection cover 7 and the lower protection cover 7, so that the installation connection between the protection cover 7 and the fixing piece 2 is realized.

Specifically, be provided with protruding muscle 74 in the safety cover 7, protruding muscle 74 contracts the setting inwards along the radial cross-section of safety cover 7, laminating with one side that first connecting portion 21 is close to shell 32, the chamfer that first portion 211 set up is in order to be convenient for with protruding muscle 74 card outside first connecting portion 21 when mounting 2 and protruding muscle 74 joint, if do not set up the chamfer, can lead to the card to appear blocking in-process, the insecure of card, protruding muscle 74 contracts inwards highly will be less than the distance between safety cover 7 to shell 32, protruding muscle 74 does not contact with shell 32, prevent that the heat on the shell 32 from causing the destruction to the safety cover 7 of plastics material when heating module 3 during operation, thereby the potential safety hazard has been reduced.

In the embodiment of the utility model, the second connecting portion 22 protrudes from the middle of the first connecting portion 21 to the other side of the end portion of the protective cover 7, and is used for supporting the housing 32, one end of the housing 32 is sleeved on the second connecting portion 22, and abuts against the first connecting portion 21, and the second connecting portion 22 and the housing 32 are connected through a fastening structure.

Specifically, the clamping structure includes a clamping protrusion 221 disposed on one of the housing 32 and the second connecting portion 22, and a bayonet 326 disposed on the other of the housing 32 and the second connecting portion 22, where the bayonet 326 is sleeved on the clamping protrusion 221, so as to connect the housing 32 of the heating module 3 and the fixing member 2.

Specifically, in some possible embodiments, the bayonet 326 is configured as a groove recessed inward from the peripheral wall of the second connecting portion 22, and the engaging protrusions 221 are configured as protrusions corresponding to the above-described recessed groove one by one sequentially arranged from the peripheral wall of the inner surface of the housing 32.

Preferably, the outer peripheral wall of the second connecting portion 22 is provided with a locking protrusion 221, and the side wall of the housing 32 is provided with a bayonet 326, which is adapted to the locking protrusion 221 provided in the second connecting portion 22.

Specifically, the metal plate material is selected as the manufacturing material of the casing 32, the casing 32 is a whole sheet metal part which is bent to form a part with the same shape as the peripheral surface of the second connecting part 22, a claw and a buckle are arranged on one side of the casing 32 and used for self-locking installation, and bayonets 326 are arranged on two opposite sides of the peripheral wall of the casing 32 and used for fixing the supporting piece 31 for winding the heating wire.

Specifically, the clamping protrusion 221 of the second connecting portion 22 is a square block formed by a plane extending perpendicularly to the plane and respectively arranged on each surface of the second connecting portion 22, and a chamfer is arranged at the end of the square block, so that when the shell 32 is connected with the second connecting portion 22, the shell can be clamped conveniently in the self-locking process, and the situation that the top of the square block and the bayonet are blocked when the bayonet is clamped with the clamping protrusion at a certain angle in the self-locking process is avoided.

Specifically, the plurality of engaging protrusions 221 are uniformly arranged along the circumferential direction of the second connecting portion 22, and the bayonet 326 on the housing 32 is in one-to-one correspondence with the plurality of engaging protrusions 221 of the second connecting portion 22.

Specifically, in the process of self-locking installation of the housing 32, the clamping protrusions of the fixing piece 2 are inserted into corresponding bayonets of the housing 32, so that the housing 32 and the fixing piece 2 are connected.

Preferably, the engaging protrusion 211 may be provided such that a side close to the first connecting portion 21 is provided as a straight surface perpendicular to the axial center of the second connecting portion 22, and a slope surface provided away from the first connecting portion 21 is inclined from the end portion to the root portion in a direction away from the first connecting portion 21.

Preferably, after the self-locking installation of the shell 32 is completed, the whole heating module 3 is sleeved on the fixing piece 2, so that the heating module 3 is connected with the fixing piece, and the side, away from the first connecting portion 21, of the clamping protrusion 211 is an inclined surface, so that the installation is facilitated.

Example III

As shown in fig. 1 to 7, the present embodiment provides a dishwasher, which includes an air duct heating device including a fixing member 2, a heating module 3, and the heating module protection cover structure of the above embodiment.

Specifically, in the embodiment of the present utility model, the heating module protection cover structure is a protection cover 7, which is used for installing the heating module 3. The fixing piece 2 is provided with a groove matched with the shell 32 after being automatically locked and installed on one side, far away from the fan 1, of the first connecting portion 21, the groove wall is attached to the outer surface of the shell, and the groove is the second connecting portion 22.

Specifically, in order to maintain the fixing effect unchanged, the first portion 211 of the first connecting portion 21 extends in a direction from the second portion 212 to the first portion 211, leaving enough space for the groove of the second connecting portion 22 to be deep enough.

Specifically, the depth of the groove of the second connecting portion 22 determines the stability of the connection with the housing 32, and the depth of the groove is at least the same as the protruding height of the second connecting portion 22 in the first embodiment.

In the embodiment of the utility model, the groove wall of the groove part of the second connecting part 22 is attached to the outer surface of the shell 32 of the heating module 3, the end part of the shell 32 is abutted to the groove bottom of the groove, and the second connecting part 22 and the shell 32 are realized by arranging a clamping structure.

Specifically, the clamping structure includes a clamping protrusion 221 disposed on a groove wall of the groove of the second connecting portion 22, and a bayonet 326 disposed on the housing 32 and adapted to the clamping protrusion 221 disposed on the second connecting portion 22.

Preferably, the engaging protrusion 221 of the second connecting portion 22: setting one side close to the bottom of the groove as a straight surface perpendicular to the axis of the second connecting part 22; the side away from the bottom of the groove is provided as a slope inclined from the end portion to the root portion in a direction away from the bottom of the groove.

Specifically, the clamping protrusion 211 is provided with an inclined surface, and when the housing 32 is inserted into the second connecting portion 22, one end, close to the fixing member, of the housing 32, which has a bayonet 326, has a transition deformation, so that the mounting can be realized more conveniently.

Specifically, the clamping protrusions 221 are uniformly arranged along the circumferential direction of the groove wall of the second connecting portion 22, and the bayonets 326 on the housing 32 are in one-to-one correspondence with the clamping protrusions 221 of the second connecting portion 22.

In the embodiment of the present utility model, the housing 32 is first self-locked and installed to form a size and shape corresponding to the second connecting portion 22, and then the housing 32 is inserted into the groove portion of the second connecting portion 22, and the connection between the fixing member 2 and the housing 32 is achieved through the cooperation of the clamping protrusion 221 and the bayonet 326.

In the embodiment of the present utility model, the protruding rib 74 provided in the protecting cover 7 is to be replaced correspondingly according to the extending length of the first portion 211, so that the protruding rib 74 can be clamped on the side of the first portion 211 of the first connecting portion 21 away from the second portion 212, thereby ensuring that the fixing element 2 is clamped in the protecting cover 7.

Example IV

As shown in fig. 1 to 8, the present embodiment provides a dishwasher, which includes a fan protection cover 13, an air supply device 1, and the heating module protection cover structure of the dishwasher according to the first embodiment, where the heating module protection cover structure is connected to the fan protection cover 13, and the air supply device 1 is included inside the fan protection cover 13.

Specifically, in the embodiment of the present utility model, the air supply device 1 includes a fan, and the fan in this embodiment is a ducted fan, where the ducted fan has an air inlet channel and an air outlet channel, and a central axis of the air inlet channel coincides with a central axis of the air outlet channel. The ducted fan comprises a ducted shell and a fan arranged in the ducted 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.

As shown in fig. 8, the fan used in the present embodiment is a ducted fan, which is a structure for driving external airflow to finally enter the inner container of the dishwasher through the air duct structure. The ducted fan comprises a fan shell, a motor is arranged in the 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 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 ducted 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.

The fan of this embodiment adopts the ducted fan, namely the central axis of air inlet channel with the central axis coincidence of air-out passageway, and the wind pressure that this kind of structure produced is big, and the windage is little, and the amount of wind is big. 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 intake is large, and the drying efficiency of the air duct of the dish washer can be improved. However, the bypass fan generates noise during operation due to high-frequency vibration, so as to reduce vibration frequency, and in a further scheme of the embodiment, the air supply device 1 further comprises a shock pad 12, and the shock pad 12 is sleeved on the periphery of the fan shell. In this embodiment, the shock pad 12 is an integrally formed structure and is sleeved on the outer periphery of the ducted fan housing along the air supply direction. The cushion 12 is made of an elastic material capable of being deformed to some extent.

In this embodiment, one end of the cushion 12 extends outside the air intake end of the blower. That is, at the air inlet end of the fan, the shock pad 12 extends beyond the fan housing and away from the 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 blower. That is, at the air outlet end of the fan, the shock pad 12 extends beyond the fan housing and extends away from the 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 fan middle position.

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

Because the ducted fan is adopted in the embodiment, the wind resistance is small, the air intake is large, and the drying efficiency of the air duct 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 provided 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 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.

In a further scheme 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 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 fan from the filtering holes 131 on the baffle 132, and can enter the fan from the filtering holes 131 arranged on the fan protection cover 13 through the gaps between the serrated structures 122 and the baffle 132. And because the mounting ribs support the fan, the 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 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 fan whole body all can be absorbed by the fan, promoted the air inlet efficiency of fan greatly.

In a preferred embodiment of the present embodiment, the first mounting rib 133 is disposed at a rear position in the 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 position from the second mounting rib 134 to the fan air outlet, wind passes through the filter holes 131 and enters the fan through the air outlet on the second mounting rib 134 after entering the interval between the fan and the fan protection cover 13.

In another aspect of this embodiment, the second mounting rib 134 is provided with an inwardly recessed air passage on its inner circumferential surface, and the air passage cooperates with the outer circumferential surface of the damper 12 to form an air passage. That is, when the fan protection cover 13 is sleeved on the periphery of the 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 passing opening with the opening blocking column of the air passing groove 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 two installation ribs, the 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 fan axis and extending toward the air inlet of the fan, and a second inner surface 1352 connected to the extending end of the first inner surface 1351 and extending radially outward of the 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 connected to an extending end of the third inner surface 1361 and extending radially outward of the air blower.

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 height of the protrusions of the first and second mounting ribs 133, 134 is the same as the height of the fourth inner surface. The baffle 132, the first mounting rib 133, the second mounting rib 134, the first stopper 135 and the second stopper 1362 together apply an compressive force to the damper pad 12 to fix the blower in the blower shield 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.

Since the first and second stopper portions 135 and 1362 are provided at the end of the fan guard 13 in the air blowing direction in an annular projection structure extending in the circumferential direction of the fan guard 13, and the first stopper portion 135 abuts against the outer end surface of the damper pad 12 and the second stopper portion 1362 abuts against the outer circumferential surface of the damper pad 12, the damper pad 12 and the fan guard 13 are formed in a stepped seal structure at the end of the fan in the air blowing 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 fan has a fan housing, which 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 fan, and the inner diameter of the air outlet of the 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 fan shell is also sleeved with a shock pad 12, and the inner diameter of the fan shell is smaller than the inner diameter of the shock pad 12. That is, the inner diameter of the fan housing is smaller than the inner diameter of the first limiting portion 135, the inner diameter of the damper pad 12 is also smaller than the inner diameter of the first limiting portion 135, and the damper pad 12 and the first limiting portion 135 form a communication structure with an enlarged opening along the air outlet direction.

The scheme of the embodiment further comprises: a fixing member 2 provided at a position downstream of the fan protection cover 13 in the air blowing direction, the fixing member 2 having a ventilation chamber 23 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 23 of the fixing piece 2, and the first limiting part 135 and the fixing piece 2 form a communication structure with gradually enlarged openings along the air outlet direction. Specifically, the second portion 212 of the fixing member 2 contacts the first limiting portion 135.

According to the scheme provided by the embodiment, all parts of the air outlet of the 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 2 form a communication structure with an enlarged inner diameter, so that wind can smoothly enter the air channel of the dish washer.

In the preferred embodiment, the ventilation cavity 23 formed on the fixing member 2 has an inner diameter gradually increased along the air supply direction, and a bell mouth shape is formed to make ventilation smoother.

The foregoing description is only illustrative of the preferred embodiment of the present utility model, and is not to be construed as limiting the utility model, but is to be construed as limiting the utility model to any and all simple modifications, equivalent variations and adaptations of the embodiments described above, which are within the scope of the utility model, may be made by those skilled in the art without departing from the scope of the utility model.

Claims (10)

1. A heating module protection cover structure of dish washer, its characterized in that: comprising the steps of (a) a step of,

the protective cover base (76) comprises a first groove body (761) which extends for a certain length and is provided with an upper opening, one end of the first groove body (761) is an open end, the other end of the first groove body is an end face provided with an air inlet opening, and a limiting part is arranged in the first groove body (761) close to the end face;

and the cover body (77) is buckled with the protective cover base (76).

2. The heating module protecting cover structure of a dishwasher according to claim 1, wherein:

the first groove body (761) is provided with two side walls which are arranged in parallel in an extending way and a bottom wall which connects the two side walls;

the limiting part comprises convex ribs (74) protruding from the side walls, the convex ribs (74) and the end faces are arranged at intervals, and an installation space is formed between the convex ribs and the end faces.

3. The heating module protecting cover structure of a dishwasher according to claim 2, wherein:

the ribs (74) are plate-like structures parallel to the end faces.

4. A heating module protecting cover structure of a dish washer according to claim 3, wherein:

the rib (74) extends from the upper side opening of the first groove body (761) to the bottom wall.

5. The heating module protecting cover structure of a dishwasher according to claim 2, wherein:

the limiting part further comprises a limiting rib (7611), and the limiting rib (7611) is arranged on the inner wall of the first groove body (761) forming the installation space.

6. The heating module protecting cover structure of a dishwasher according to claim 5, wherein:

the first groove body (761) comprises a bottom wall and a side wall, and the limit rib (7611) extends from the upper side opening of the first groove body (761) to the bottom wall.

7. A heating module protecting cover structure of a dish washer according to any one of claims 1-5, wherein:

the protective cover base (76) further comprises a protective cover protrusion (73) and a protective cover connecting part (78) which are arranged on the outer surface of the first groove body (761) in a protruding mode;

the protective cover protrusion (73) is arranged in a region close to the open end;

the first slot (761) includes a bottom wall and a side wall, and the boot connection (78) is disposed on the side wall in an area proximate to the bottom wall.

8. A heating module protecting cover structure of a dish washer according to any one of claims 1-5, wherein:

the first groove body (761) is provided with two side walls which are arranged in parallel in an extending way;

The protective cover base (76) further comprises a wire passing groove (763), the wire passing groove (763) is arranged at the joint of one side wall and the end face and penetrates through the inner side and the outer side of the first groove body (761).

9. A heating module protecting cover structure of a dish washer according to any one of claims 2-5, wherein:

the cover body (77) comprises a second groove body (764) which extends for a certain length and is provided with an opening at the lower side, one end of the second groove body (764) is an opening end, the other end of the second groove body is an end face provided with an air inlet opening, and the outer wall and the inner wall of the cover body (77) are provided with a height difference along the direction perpendicular to the bottom wall so as to form a first clamping part;

the outer wall and the inner wall of the protective cover base (76) are provided with a height difference along the direction perpendicular to the bottom wall to form a second clamping part (7612);

a buckle (762) is arranged on the outer wall of the first groove body (761), and the buckle (762) is buckled with the cover body (77).

10. A dishwasher, characterized in that it comprises a protective cover structure according to any one of claims 1 to 9.