CN220024981U - Heater shell of dish washer and dish washer - Google Patents

Abstract

The utility model discloses a heater housing of a dish washer and the dish washer, wherein the heater housing comprises: the shell is formed by a sheet metal part, a self-locking structure is arranged on at least one of two opposite side edges of the sheet metal part, the sheet metal part is bent to form a containing cavity, and the two side edges are fixed through the self-locking structure; the first limit groove is arranged on the inner wall of the containing cavity and used for fixing the heating part inside the shell. The shell structure provided by the utility model is integrally formed, and the shell is formed by simply processing the sheet metal part, so that the shell is convenient to install under the condition that the structural effect of the heater shell of the dish washer is stable, the production efficiency of the shell is improved, the shell production material is saved, the production cost is reduced, and the shell can still keep the structure stable after thermal deformation.

Description

Heater shell 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 dish-washing machine heater shell and a dish-washing machine.

Background

The drying principle of most dish-washing machines 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.

Wherein, the heater shell is used for fixing the heating part inside the heater shell and isolating the heat dissipation and insulation inside the heater shell.

At present, the shell of current heater is divided into upper and lower two parts cooperation and forms, and its structure is complicated, and complex operation wastes time and energy, has reduced operating personnel operating efficiency, extravagant shell production material, leads to its manufacturing cost to be high.

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 the heater shell of the dish-washing machine, which is provided with the shell body through simple treatment such as bending, cutting and the like of the sheet metal part, so that the installation of the shell body is convenient under the condition that the structural effect of the heater shell of the dish-washing machine is stable, the production efficiency of the shell body is improved, the production materials of the shell body are saved, and the production cost is reduced.

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

the present utility model provides a heater housing of a dish washer, comprising,

the shell is formed by a sheet metal part, a self-locking structure is arranged on at least one of two opposite side edges of the sheet metal part, the sheet metal part is bent to form a containing cavity, and the two side edges are fixed through the self-locking structure;

the first limit groove is arranged on the inner wall of the containing cavity and used for fixing the heating part inside the shell.

The utility model forms the shell comprising the self-locking structure and the first limit groove through simple processing such as bending and cutting of the sheet metal part, fixes the heating part of the dish washer in the shell, realizes the functions of protecting, connecting and fixing the heating part of the heater shell of the dish washer, can be connected with other parts in the heating module of the dish washer, can realize the purpose of further stabilizing and fixing the heating part, and is convenient for installing the shell under the condition of ensuring the stable structural effect of the heater shell of the dish washer, improves the production efficiency of the shell, saves the production materials of the shell and reduces the production cost.

The utility model further provides the following scheme: the sheet metal part is rectangular, and at least one of two opposite sides of the sheet metal part is provided with a serrated self-locking structure.

In the scheme, the rectangular sheet metal part is made of common materials, so that the production cost of the shell is lower; the self-locking structure of cockscomb structure has been set up on at least one of the opposite both sides limit of sheet metal component to its inside heating portion has improved the structural stability of shell to after the heat that produces in the course of the work, make it take place thermal deformation, still can keep the general stability of structure, make its inside heating portion keep unchanged relatively for the position of other spare part in the heating module of dish washer.

The utility model further provides the following scheme: the self-locking structure comprises:

the first sawtooth structure is arranged on one of the two side edges;

the second sawtooth structure is arranged on the other side of the two side edges;

the convex parts of the first sawtooth structures are arranged corresponding to the concave parts of the second sawtooth structures.

In the scheme, the self-locking structure comprises a sawtooth structure with two parts, so that the forming process of the sawtooth structure is simpler, and the structural stability of the shell is improved.

The utility model further provides the following scheme: the first sawtooth structure comprises a first convex part, and the second sawtooth structure comprises a second convex part;

the first sawtooth structure comprises a first convex part, and the second sawtooth structure comprises a second convex part;

the first convex parts and the second convex parts are staggered along the extending direction of the side edges and are attached to the outer surface of the shell to fix the two side edges;

preferably, the first protrusions and the second protrusions are alternately arranged, and the number of the first protrusions is one more than the number of the second protrusions.

In the scheme, the sawtooth structure with two parts is arranged at the position of the assembled shell, so that the stability of the shape structure of the shell is improved under the condition that the shell does not need to be additionally provided with a complex structure.

The utility model further provides the following scheme: the extension length of the first convex part along the direction parallel to the side edge is longer than that of the second convex part along the direction parallel to the side edge.

In the scheme, the sawtooth structures of the two parts are differentially arranged, so that the stability of the self-locking structure and the structural stability of the shell are improved.

The utility model further provides the following scheme: the sheet metal part is bent for a plurality of times to form a cavity;

preferably, the angle of the bending is a right angle.

In the scheme, the sheet metal part is bent to form the accommodating cavity, so that the forming process of the shell is simpler, heat generated by the heating part in the shell in the working process can be realized, the structure can be still kept stable after the heating part is subjected to thermal deformation, and the position of the heating part in the shell relative to other parts in the heating module of the dish washer is kept unchanged relatively.

The utility model further provides the following scheme: the first limiting groove is a through groove penetrating through the inner side and the outer side of the shell, and is arranged on two opposite side walls of the shell 32.

In the above scheme, the first limit groove is a through groove penetrating through the inside and outside of the shell, and most of the heating parts including the heating wires or the PTC heating parts at present adopt symmetrical structures, so that the shell can be adapted to most of the heating parts, and the through grooves of the shell are symmetrically arranged, so that heat generated in the working process of the heating parts is subjected to thermal deformation, and the heating parts which are symmetrically connected with the heat are symmetrically deformed, so that the positions of main heating parts in the heating parts relative to other parts in the heating module of the dish washer are kept unchanged relatively.

The utility model further provides the following scheme: the two ends of the cavity are open, and the two opposite sides of the shell 32 are respectively provided with a bayonet, and the bayonet is arranged at a position close to one of the openings.

In the scheme, the bayonets are symmetrically arranged and arranged, so that the shell can be connected with the connecting piece of the heating module, and the application of the bayonet in the heating module is facilitated.

The utility model further provides the following scheme: the shell also comprises a heat insulation part which is arranged on the inner wall of the containing cavity.

In the scheme, the heat insulation part realizes the insulation and heat insulation of the shell, and the safety and the structural stability of the shell are enhanced.

The present utility model also provides a dishwasher employing the heater housing structure as described above.

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

1. The shell comprising the self-locking structure and the first limit groove is formed by simple processing such as bending and cutting of the sheet metal part, so that the shell is convenient to install, the production efficiency of the shell is improved, the production materials of the shell are saved, and the production cost is reduced;

2. according to the utility model, the heating part of the dish washer is fixed in the shell, so that the functions of protecting, connecting and fixing the heating part of the dish washer heater shell are realized, and the heating part in the dish washer can still keep the stability of the structure after being subjected to thermal deformation due to the heat generated in the working process of the heating part;

3. the utility model achieves that the position of the internal heating part thereof relative to the other parts in the heating module of the dishwasher is kept relatively unchanged by connecting the heater housing with the other parts in the heating module of the dishwasher.

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 heater housing of a dishwasher according to the present utility model;

FIG. 2 is a schematic view of a heating module of a heater housing of a dishwasher in accordance with the present utility model;

FIG. 3 is a schematic diagram showing the detailed structure of the heat insulation part A in FIG. 1 at the bending position of the shell according to the present utility model;

FIG. 4 is a schematic diagram of an air duct heating apparatus according to an embodiment of the present utility model;

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 view of a fixing member according to a fourth embodiment.

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 fig. 1 to 3, the utility model provides a heater housing of a dish washer, which is formed into a housing through simple processing such as bending and cutting of sheet metal parts, so that the installation of the housing is convenient under the condition that the structural effect of the heater housing of the dish washer is stable, the production efficiency of the housing is improved, the production materials of the housing are saved, and the production cost is reduced.

Example 1

In this embodiment, as shown in fig. 1 to 3, there is provided a heater housing of a dishwasher, comprising: the shell 32 is formed by a sheet metal part, at least one of two opposite sides of the sheet metal part is provided with a self-locking structure 327, the sheet metal part is bent to form a cavity, and the two sides are fixed through the self-locking structure 327;

the first limiting groove 321 is disposed on the inner wall of the cavity and is used for fixing the heating part 37 inside the casing 32.

In this embodiment, through the simple processing such as buckling, cutting to the sheet metal component form the casing including auto-lock structure and first spacing groove, with the heating portion 37 of dish washer fixed in inside the casing, realized dish washer heater shell protection, connect and fixed heating portion 37's effect to make it can be connected with other spare part in the heating module of dish washer, can realize the purpose that heating portion 37 is further stable fixed, make it guarantee under the stable condition of the structural effect of dish washer heater shell, made things convenient for the installation of casing, improved the production efficiency of casing, reduced manufacturing cost.

In this embodiment, the structural effects of the dishwasher heater housing include: the heating part 37 of the dish washer is fixed in the shell, so that the functions of protecting, connecting and fixing the heating part 37 of the dish washer heater are realized, and the heat generated by the heating part 37 in the inside of the dish washer heater in the working process can still keep the stability of the structure after the heating part is subjected to thermal deformation; by making it possible to connect with other components in the heating module of the dishwasher, it is achieved that the position of its internal heating 37 relative to the other components in the heating module of the dishwasher is kept relatively unchanged.

In this embodiment, the sheet metal part is specifically made of steel or aluminum alloy, and the steel has the advantages of high tensile strength, large elastic modulus, easy plasticity and high hardness, and the aluminum alloy material has the advantages of easy processing, capability of being made into various sectional materials, plates, good corrosion resistance, light weight and high strength, and can be subjected to shearing, punching, cutting, folding, rolling, welding, surface treatment and the like, so that the shell structure of the utility model has simpler process and further reduces the production cost of the shell of the heater.

In this embodiment, the sheet metal part is rectangular, and at least one of two opposite sides of the sheet metal part is provided with a serrated self-locking structure 327.

In the embodiment, the rectangular sheet metal part is made of common materials, so that the production cost of the heater shell is lower; the arrangement of the serrated self-locking structure on at least one of the two opposite sides of the sheet metal part improves the structural stability of the heater housing, and the heat generated by the internal heating part 37 in the heater housing during operation can keep the structure substantially stable after thermal deformation, so that the position of the internal heating part 37 relative to other parts in the heating module of the dishwasher is kept relatively unchanged.

In this embodiment, the self-locking structure 327 includes:

the first sawtooth structure is arranged on one of the two side edges;

the second sawtooth structure is arranged on the other side of the two side edges;

the convex parts of the first sawtooth structures are arranged corresponding to the concave parts of the second sawtooth structures.

In this embodiment, the self-locking structure includes the sawtooth structure of two parts, has both guaranteed that the shaping technology of sawtooth structure itself is simpler, has improved the structural stability of heater shell again.

In this embodiment, the first sawtooth structure includes a first protruding portion, and the second sawtooth structure includes a second protruding portion;

the self-locking structure 327 is composed of a first convex portion 3271 and a second convex portion 3272, the first convex portion 3271 and the second convex portion 3272 are rectangular, and the first convex portion 3271 and the second convex portion 3272 are clung to the side wall of the shell 32 through bending;

preferably, the first protrusions 3271 are one more than the second protrusions 3272.

In this embodiment, the sawtooth structure of two parts is disposed at the assembled position of the housing, so that the stability of the shape structure of the heater housing is improved without adding any additional complex structure to the housing.

In this embodiment, the extension length of the first protrusion 3271 along the direction parallel to the side edge is longer than the extension length of the second protrusion 3272 along the direction parallel to the side edge.

In this embodiment, the arrangement of differentiating the saw tooth structure of the two parts improves the stability of the self-locking structure and the structural stability of the heater housing.

In this embodiment, the sheet metal part is bent for several times to form a cavity;

preferably, the angle of the bending is a right angle.

In this embodiment, the sheet metal part is bent to form the cavity, so that the forming process of the shell is simpler, and heat generated by the heating part 37 in the shell in the working process can be realized, so that the structure can be kept generally stable after the heating part is subjected to thermal deformation, and the position of the heating part 37 in the shell is kept relatively unchanged relative to other parts in the heating module of the dish washer.

In this embodiment, the first limiting groove 321 is a through groove penetrating through the inner and outer sides of the housing 32, and is disposed on two opposite sidewalls of the housing 32.

In this embodiment, the first limiting groove 321 is a through groove penetrating through the inside and outside of the housing 32, and most of the heating parts 37 including heating wires or PTC heating elements currently adopt a symmetrical structure, which makes the housing fit most of the heating parts 37, and the through grooves of the housing are symmetrically arranged, so that after the heat generated in the working process of the heating parts 37 is thermally deformed, the heating parts 37 symmetrically connected with the heating parts are symmetrically deformed, and further the positions of the main heating elements in the heating parts 37 relative to other parts in the heating module of the dishwasher are kept relatively unchanged.

In this embodiment, as shown in fig. 2, the first limiting groove 321 is a rectangular through groove, and is clamped inside the first limiting groove by the fixing member 2, so that the structure of the housing 32 is further stabilized.

In this embodiment, two ends of the cavity form openings, two opposite sides of the housing 32 are respectively provided with a bayonet 326, and the bayonet 326 is disposed at a position close to one of the openings.

In this embodiment, the symmetrical arrangement and location of the bayonet 326 allows the housing 32 to be connected to the connector of the heating module, facilitating its use in the heating module.

In this embodiment, as shown in fig. 2, the bayonet 326 is connected to the heating portion 37 by a snap connection, so that the bayonet is fixedly supported by each other, and the structure of the housing 32 is further stabilized.

In this embodiment, the housing 32 further includes a heat insulating portion 34 disposed on an inner wall of the cavity.

In this embodiment, the insulation and heat insulation of the heater housing are realized by the heat insulation portion, and the safety and structural stability of the heater housing are enhanced.

In this embodiment, as shown in fig. 2, the heat insulating portion 34 has a sheet-like structure that is in close contact with the inner wall of the housing 32. Specifically, the shell 32 is a cavity formed by bending a sheet metal part at right angles for 4 times, and the heat insulation part 34 is tightly attached to the surface of the inner wall of each side of the cavity. The heat insulation part 34 is made of mica sheets, and the mica sheets on two opposite sides of the heat insulation part are provided with through grooves corresponding to the through grooves of the first limiting groove 321, so that the heating part 37 penetrates through the through grooves of the heat insulation part 34 and the through grooves of the first limiting groove 321. More specifically, as shown in fig. 3, the heat insulation parts 34 are mutually overlapped and supported at the right-angle bending positions of the inner walls of the heat insulation parts, so that the through grooves are propped against the heat insulation parts 34 through the heating parts 37, and the heat insulation parts 34 are mutually propped against each other at the right-angle bending positions, so that the heat insulation parts 34 can be mounted on the inner walls of the shell without being further fixed, the production materials of the heater shell are further saved, and the production cost is reduced.

In this embodiment, the manufacturing and assembling process of the heater housing is as follows: the sheet metal part is simply processed such as cutting, so that the sheet metal part is provided with a self-locking structure 327, a bayonet 326 and a first limit groove 321; bending the sheet metal part, putting the heating part 37 and the heat insulation part 34 in the bending process of the sheet metal part, and clamping the first limiting groove 321 on the heating part and the heat insulation part on the fixing part 2; the heater housing is formed by intersecting the first convex portion 3271 and the second convex portion 3272 of the self-locking structure 327, and bending the first convex portion 3271 and the second convex portion 3272 along the overlapping edge of the two sides of the sheet metal part, which are in contact with each other, so as to completely adhere to the outer wall surface of the housing 32.

In this embodiment, as shown in fig. 1 and 2, the casing 32 has an approximately rectangular parallelepiped shape, so that the thermal expansion direction of the casing is approximately symmetrical, further ensuring the structural stability of the heater casing, and the internal heating portion 37 thereof is also symmetrically deformed, so that the position of the main heating element in the heating portion 37 relative to other parts in the heating module of the dishwasher is kept relatively unchanged.

Example two

As shown in fig. 1 to 6, the present embodiment provides a dishwasher including a heating module 3, the heating module 3 including the heater housing according to the first embodiment, and a heating portion provided inside a casing 32 of the heater housing.

As shown in fig. 1 to 6, in particular, in this embodiment, a dishwasher air duct heating device is described, including a fixing member 2, a protecting cover 7 and a heating module 3, the heating module 3 is provided with a housing 32, a heating component is disposed inside the housing 32, the housing 32 is mounted in the protecting cover 7 through the fixing member 2, a certain gap exists between the inner wall of the protecting cover 7 and the outer surface of the housing 32, on one hand, the protecting cover 7 is disposed to perform a heat insulation function, and heat loss of the heating module 3 is reduced; on the other hand, the fixing member 2 can 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 utility model, the fan module 1 and the heating module 3 are required to be installed in the protective cover 7 to form a whole, a ventilation opening is reserved at the position where the fan module 1 is connected with the heating module 3 by the protective cover 7, and meanwhile, a ventilation cavity 23 corresponding to the ventilation opening is also arranged on the fixing piece 2, so that wind 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 fan module 1 and the heating module 3 are wrapped by the protection cover 7, 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 fan module 1 is avoided, and the service life of the heating module 3 and the fan module 1 is prolonged. In the utility model, the fan module 1 adopts the ducted fan, and the noise reduction module can be added on the part where the ducted fan is arranged on the protective cover 7 so as to overcome the noise of the ducted 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 fan module 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 fan module 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 shell 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 that is coaxial with the heater case and extends from the first connection portion 21 to the second connection portion 22 with the edge of the first connection portion 21 near the case 32 as a starting point, to protect the entire heating module 3; a connection end 741 which is coaxial with the heater housing, extends 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 is bent in the direction facing the central axis of the heater 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 casing 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 casing 32, protruding muscle 74 does not contact with casing 32, prevent that the heat on the casing 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 casing 32 is a sheet metal part, the casing 32 is a whole sheet metal part, the whole sheet metal part 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 a bayonet 326 is 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.

In this embodiment, the heating part includes the heating wire and the supporting member 31.

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 chamfer can enable the heater shell to be conveniently clamped in a 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 clamping protrusions 221 are provided with a plurality of clamping protrusions 221 uniformly arranged along the circumferential direction of the second connecting portion 22, and the bayonets 326 on the housing 32 are in one-to-one corresponding fit with the plurality of clamping protrusions 221 of the second connecting portion 22.

Specifically, during the self-locking installation of the housing 32, the clamping protrusions of the fixing member 2 are inserted into corresponding bayonets of the housing 32, so that the housing 32 and the fixing member 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 including a heating module 3, the heating module 3 including the heater housing according to the first embodiment, and a fixing member 2 connected to the heater housing.

In the embodiment of the present utility model, specifically, a groove matched with the housing 32 after the automatic lock is installed is provided on one side of the first connecting portion 21 away from the fan 1 of the fixing member 2, the groove wall of the groove is attached to the outer surface of the heater housing, 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 the 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 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 including a heating module 3, the heating module 3 including the heater housing according to the first embodiment, and a fixing member 2 connected to the heater housing.

In this embodiment of the present utility model, specifically, the fixing member 2 includes two parts, a first connecting portion 21 and a second connecting portion 22, where the first connecting portion 21 is used to connect with the protection cover 7, one end of the protection cover 7 near the fan module 1 is embedded in the second connecting portion 22 is used to connect with the housing 32 of the heating module 3, one end of the first connecting portion 21 far from the fan module 1 is provided, the second connecting portion 22 protrudes from the first connecting portion 21, and the first connecting portion 21 and the second connecting portion 22 are integrated.

Specifically, the first connecting portion 21 is provided with a groove 26 extending around the second connecting portion 22, the groove width of the groove 26 is matched with the wall thickness of the shell 32, and the end portion of the shell 32 is at least partially inserted into the groove 26 and is abutted against the bottom of the groove 26.

Specifically, the second connecting portion 22 is provided with a locking protrusion 221, and the housing 32 is provided with a bayonet 326 for matching with the locking protrusion 221 provided on the second connecting portion 22.

Specifically, the side of the engaging protrusion 221 provided on the second connecting portion 22 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 the side away from the first connecting portion 21 is provided as an inclined surface inclined from the end portion to the root portion in a direction away from the first connecting portion 21.

Specifically, the housing 32 of the heating module 3 is self-locked and installed first, and then the whole heating module 3 is sleeved on the second connecting portion 22, and the end portion of the housing 32 is at least partially inserted into the groove 26 and abuts against the bottom of the groove 26.

In the embodiment of the utility model, the grooves 26 are arranged to enable the connection between the shell 32 and the fixing piece 2 to be firmer.

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 heater housing for a dishwasher, comprising: comprising the steps of (a) a step of,

the shell (32) is formed by a sheet metal part, a self-locking structure (327) is arranged on at least one of two opposite sides of the sheet metal part, the sheet metal part is bent to form a containing cavity, and the two sides are fixed through the self-locking structure (327);

the first limit groove (321) is arranged on the inner wall of the containing cavity and used for fixing the heating part (37) in the shell (32).

2. A heater housing for a dishwasher as in claim 1, wherein:

the sheet metal part is rectangular, and at least one of two opposite sides of the sheet metal part is provided with a serrated self-locking structure (327).

3. A heater housing for a dishwasher as in claim 2, wherein:

the self-locking structure (327) includes:

the first sawtooth structure is arranged on one of the two side edges;

the second sawtooth structure is arranged on the other side of the two side edges;

the convex parts of the first sawtooth structures are arranged corresponding to the concave parts of the second sawtooth structures.

4. A heater housing for a dishwasher according to claim 3, wherein:

the first serration structure comprises a first lobe (3271) and the second serration structure comprises a second lobe (3272);

the first convex parts (3271) and the second convex parts (3272) are staggered along the extending direction of the side edges and are attached to the outer surface of the shell (32) to fix the two side edges.

5. A heater housing for a dishwasher as in claim 4, wherein:

the first protruding part (3271) has a longer extension in the direction parallel to the side edge than the second protruding part (3272).

6. A heater housing for a dishwasher according to any one of claims 1 to 5, wherein:

the sheet metal part is bent for a plurality of times to form a containing cavity.

7. A heater housing for a dishwasher as in claim 6, wherein:

the first limiting groove (321) is a through groove penetrating through the inner side and the outer side of the shell (32), and is arranged on the two opposite side walls of the shell (32).

8. A heater housing for a dishwasher according to any one of claims 1 to 5, wherein:

two ends of the containing cavity are opened, bayonets (326) are respectively arranged on two opposite side surfaces of the shell (32), and the bayonets (326) are arranged at positions close to one of the openings.

9. A heater housing for a dishwasher according to any one of claims 1 to 5, wherein:

the housing (32) further includes a thermal insulation (34) disposed on an inner wall of the cavity.

10. A dishwasher, characterized in that the dishwasher uses a heater housing as claimed in any one of claims 1 to 9.