WO2019041737A1

WO2019041737A1 - Heater, air heating apparatus and dishwasher

Info

Publication number: WO2019041737A1
Application number: PCT/CN2018/073722
Authority: WO
Inventors: 辛载奎; 仇灿华; 许绍炮; 徐刚; 韩冰
Original assignee: 佛山市顺德区美的洗涤电器制造有限公司; 美的集团股份有限公司
Priority date: 2017-08-31
Filing date: 2018-01-23
Publication date: 2019-03-07
Also published as: CN208435584U

Abstract

A heater (10), an air heating apparatus (20) and a dishwasher (100). The heater (10) comprises a housing (12) and a heating element located in the housing (12). The housing (12) is provided with protrusion structures (11) and limit structures (13). The protrusion structures (11) and the limit structures (13) are arranged with spacings therebetween. The protrusion structures (11) support the heating element. The limit structures (13) are disposed to support the heating element and limit the position and movement of the heating element in the housing (12).

Description

Heater, hot air unit and dishwasher

Priority information

The present application claims priority to and the benefit of the patent application No. PCT Application No.

Technical field

The invention relates to the technical field of household appliances, in particular to a heater, a hot air device and a dishwasher.

Background technique

In the related art, when the dishwasher is in the drying stage, hot air is blown into the dishwasher inner tank by the hot air device to accelerate the drying of the tableware. The hot air device is generally installed on the outer surface of the side plate of the inner liner. When the hot air device works, the temperature of the side plate of the inner liner is likely to be too high, and the side plate with too high temperature has safety hazards such as burns to the user.

Summary of the invention

The present invention provides a heater, a hot air device, and a dishwasher.

A heater according to an embodiment of the present invention is used in a dishwasher, the heater includes a housing, a heating element located in the housing, the housing is convexly provided with a protruding structure, and a limiting structure is also protruded in the housing. The raised structure is spaced apart from the stop structure, the raised structure supports the heating element, the stop structure configured to support the heating element and to limit the heating element within the housing The location moves.

In the above heater, since the heating element is simultaneously supported by the convex structure and the limiting structure in the housing, the contact area between the heating element and the housing can be reduced, thereby reducing the heat transfer of the heating element to the housing and the external object, thereby avoiding the user. Burns when using the dishwasher. In addition, since the heating element is limited by the limiting structure, the stability of the position of the heating element disposed in the housing can be improved, thereby preventing positional displacement due to the position of the heating element (for example, a positional deviation with respect to the convex structure under external force) Shifting) causes the heating element to be offset relative to the raised structure to increase the contact area with the housing.

In certain embodiments, the housing is substantially rectangular in shape.

In certain embodiments, the heater includes a ground terminal extending outwardly from the housing, the raised structure connecting the ground terminal.

In some embodiments, the raised structure is comprised of a conductive material and the ground terminal is comprised of a conductive material.

In some embodiments, the ground terminal is in the form of a sheet.

In some embodiments, the housing includes a first shell and a second shell that are joined, the raised structure includes a first raised structure and a second raised structure, the inner surface of the first shell is convex The first convex structure is provided, and the inner surface of the second shell is convexly provided with the second convex structure, an inner surface of the first shell is opposite to an inner surface of the second shell, and the heating The element is clamped by the first raised structure and the second raised structure.

In some embodiments, the heating element is clamped by the first raised structure and the second raised structure and is an interference fit.

In certain embodiments, the heating element is a PTC thermistor.

In some embodiments, the first raised structure includes a plurality of spaced apart first protrusions, and the second raised structure includes a plurality of spaced apart second protrusions, each of the first protrusions And facing the corresponding one of the second protrusions, the heating element being clamped by the plurality of first protrusions and the plurality of second protrusions.

In some embodiments, the first inner surface of the first shell is provided with four of the first protrusions, and the four first protrusions are distributed in four corners of a square shape. Four second protrusions are disposed on the second inner surface of the two shells, and the four second protrusions are distributed in four corners of the square shape, and the four first protrusions and the four second parts are respectively The bumps correspond to each other.

In some embodiments, the first protrusion is in the shape of a truncated cone, and the second protrusion is in the shape of a truncated cone.

In some embodiments, the first protrusion and the second protrusion are both hollow structures.

In some embodiments, the inner surface of the second shell is convexly disposed with the limiting structure, and the second protruding structure is spaced apart from the limiting structure, and the limiting structure is opposite to the first The two raised structures are closer to the outer side of the second shell, and the height of the limiting structure is greater than the height of the second raised structure.

In some embodiments, the height of the limiting structure protruding from the second inner surface of the second shell is greater than the height of the second protruding structure protruding from the second inner surface of the second shell .

In some embodiments, the limiting structure includes a plurality of limiting protrusions disposed at intervals, and a side of the heating element abuts between sides of the plurality of limiting protrusions.

In some embodiments, the limiting projection is conical.

In some embodiments, the side plate of the first shell is formed with a card slot structure, and the outer side of the side plate of the second shell is convexly provided with a card package structure, and the card package structure is configured to the card slot structure The second shell and the first shell are connected, and the side panels of the second shell are located inside the side panels of the first shell.

In some embodiments, the card slot structure includes a plurality of card slots that are spaced apart, and the card package structure includes a plurality of card packages that are spaced apart, and the plurality of card packages respectively respectively set the plurality of card slots So that the card package structure is provided with the card slot structure.

In some embodiments, the limiting structure includes a plurality of limiting projections spaced apart, and a side of the heating element abuts between sides of the plurality of limiting projections. A hot air device according to an embodiment of the present invention includes an air inlet portion, an air outlet portion, and a heater according to any one of the above embodiments, wherein the heater connects the air inlet portion and the air outlet portion.

In the above hot air device, since the heating element is simultaneously supported by the convex structure and the limiting structure in the housing, the contact area between the heating element and the housing can be reduced, thereby reducing the heat transfer of the heating element to the housing and the external object, thereby avoiding the user. Burns when using the dishwasher.

In addition, since the heating element is limited by the limiting structure, the stability of the position of the heating element disposed in the housing can be improved, thereby preventing positional displacement due to the position of the heating element (for example, a positional deviation with respect to the convex structure under external force) Shifting) causes the heating element to be offset relative to the raised structure to increase the contact area with the housing.

The dishwasher of the embodiment of the present invention includes a liner and the hot air device of the above embodiment, and the hot air device is mounted on an outer surface of the side plate of the inner liner.

In the above dishwasher, since the heating element is simultaneously supported by the convex structure and the limiting structure in the housing, the contact area between the heating element and the housing can be reduced, thereby reducing the heat transfer of the heating element to the housing and the external object, thereby avoiding The user burns when using the dishwasher.

Additional aspects and advantages of the embodiments of the invention will be set forth in part in the description.

DRAWINGS

The above and/or additional aspects and advantages of the present invention will become apparent and readily understood from

1 is a schematic structural view of a heater according to an embodiment of the present invention;

2 is a plan view showing a first case of a heater according to an embodiment of the present invention;

3 is another schematic plan view of a first case of a heater according to an embodiment of the present invention;

4 is another schematic plan view of a first case of a heater according to an embodiment of the present invention;

Figure 5 is a further plan view showing the first case of the heater of the embodiment of the present invention;

6 is a perspective view of a first case of a heater according to an embodiment of the present invention;

Figure 7 is a plan view showing a second case of the heater of the embodiment of the present invention;

Figure 8 is another plan view showing the second casing of the heater of the embodiment of the present invention;

Figure 9 is a cross-sectional view of the second casing of the heater of Figure 8 taken along line A-A;

Figure 10 is a plan view showing still another plane of the second casing of the heater of the embodiment of the present invention;

11 is a perspective view of a second case of a heater according to an embodiment of the present invention;

Figure 12 is a partial cross-sectional view showing the second casing of the heater of the embodiment of the present invention;

Figure 13 is a schematic structural view of a hot air device according to an embodiment of the present invention;

Figure 14 is a perspective view of a dishwasher in accordance with an embodiment of the present invention.

The main component symbol description:

Dishwasher 100;

The heater 10, the protrusion structure 11, the first protrusion structure 111, the second protrusion structure 112, the first protrusion 113, the second protrusion 114, the housing 12, the air duct 120, the first shell 121, the first The side plate 1210, the first inner surface 1211, the first bottom plate 1212, the second shell 122, the second side plate 1220, the second inner surface 1221, the second bottom plate 1222, the card slot structure 123, the card slot 1231, and the card package structure 124 , card package 1241, limiting structure 13, limiting protrusion 131, grounding terminal 16;

Hot air device 20, air inlet portion 21, air inlet 211, air outlet portion 22, air outlet 221, air flow passage 23, air flow baffle 24, fan 25, fixing portion 26, shaft hole 261, rotating shaft 262;

The liner 30, the side plates 31, the outlet 32, and the inlet 33.

Detailed ways

The embodiments of the present invention are described in detail below, and the examples of the embodiments are illustrated in the drawings, wherein the same or similar reference numerals indicate the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the drawings are intended to be illustrative of the invention and are not to be construed as limiting.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Orientations of "post", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. The positional relationship is based on the orientation or positional relationship shown in the drawings, and is merely for the convenience of the description of the present invention and the simplified description, and is not intended to indicate or imply that the device or component referred to has a specific orientation, and is constructed and operated in a specific orientation. Therefore, it should not be construed as limiting the invention. Moreover, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first" or "second" may include one or more of the described features either explicitly or implicitly. In the description of the present invention, the meaning of "a plurality" is two or more unless specifically and specifically defined otherwise.

In the description of the present invention, it should be noted that the terms "installation", "connected", and "connected" are to be understood broadly, and may be fixed or detachable, for example, unless otherwise explicitly defined and defined. Connected, or connected in one piece. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium, which can be the internal communication of two elements or the interaction of two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.

Referring to Figures 1-12 together, a heater 10 in accordance with an embodiment of the present invention is used in a dishwasher 100. The heater 10 includes a housing 12, a heating element (not shown) located within the housing 12.

The housing 12 is convexly provided with a convex structure 11. A limiting structure 13 is also protruded in the housing 12. The raised structure 11 is spaced apart from the limiting structure 13. The raised structure 11 supports the heating element. The stop structure 13 is configured to support the heating element and to limit the positional movement of the heating element within the housing 12.

In the above heater 10, since the heating element is simultaneously supported by the convex structure 11 and the limiting structure 13 in the casing 12, the contact area of the heating element with the casing 12 can be reduced, thereby reducing the heating element to the casing 12 and the outside. The heat transfer of the object prevents the user from scalding when using the dishwasher 100.

In addition, since the heating element is limited by the limiting structure 13, this can improve the stability of the position of the heating element disposed in the housing 12, thereby preventing positional movement due to the heating element (for example, relative to the convex structure under external force) 11 produces a positional shift) which causes the heating element to be offset relative to the raised structure 11 to increase the contact area with the housing 12.

In the present embodiment, the casing 12 has a substantially rectangular shape. As such, the shape of the housing 12 is relatively regular, facilitating installation and disassembly.

In certain embodiments, the heater 10 includes a ground terminal 16 that extends outwardly from the housing 12. The raised structure 11 is connected to the ground terminal 16.

In this way, the housing 12 and the heating element can be grounded through the protruding structure 11, so that the heating element can be effectively prevented from generating electric leakage to cause fire or damage to the human body.

It should be noted that the protruding structure 11 may be made of a conductive material, and the ground terminal 16 may also be made of a conductive material. The above conductive material is, for example, a steel material. The materials used for the housing 12, the raised structure 11, and the ground terminal 16 are not described in detail herein, and reference may be made to the prior art.

In the present embodiment, the ground terminal 16 has a sheet shape. Thus, the shape of the ground terminal 16 is relatively regular.

In certain embodiments, the housing 12 includes a first housing 121 and a second housing 122 that are coupled. The raised structure 11 includes a first raised structure 111 and a second raised structure 112. The first inner surface 1211 of the first shell 121 is convexly provided with a first convex structure 111. The second inner surface 1221 of the second shell 122 protrudes from the second convex structure 112. The first inner surface 1211 of the first shell 121 is opposite the second inner surface 1221 of the second shell 122. The heating element is held by the first raised structure 111 and the second raised structure 112.

As such, the heating element is double-sided supported so that the heating element and housing 12 are sufficiently spaced and the stability of the raised structure 11 to support the heating element can be increased. In addition, the first shell 121 and the second shell 122 may be connected by screws, snaps or welding (here may be set according to specific conditions). The first housing 121 and the second housing 122 can clamp the heating element.

Specifically, in the present embodiment, the heating element is held by the first raised structure and the second raised structure and is an interference fit. In this way, the stability of the heating element and the protruding structure 11 is better, and the heating element can also ensure sufficient contact with the protruding structure 11, so that when the grounding of the protruding structure 11 is required, the connection between the two can be ensured. stability.

It should be noted that the height of the first protrusion structure 111 protruding from the first inner surface 1211 of the first shell 121 may be set according to a specific situation, and the second protrusion structure 112 is from the second inner surface 1221 of the second shell 122. The height of the protrusions can also be set according to the specific situation, for example, according to the heating power of the heating element.

For example, in some examples, the heating element is a PTC thermistor. The PTC thermistor is easy to control and simplifies the control of the heater 10. Specifically, the PTC (Positive Temperature Coefficient) thermistor is a positive temperature coefficient thermistor. The height of the protrusions of the first raised structure 111 and the second raised structure 112 may be set according to the power of the PTC thermistor such that the temperature rise of the housing 12 is controlled within a preset range when the heater 10 is in operation. Among them, the PTC thermistor can be connected to the controller of the dishwasher 100 through a wire harness (for power connection).

Of course, it can be understood that when the height of the convex structure protruding from the inner surface of the shell is high, the distance between the heating element and the first shell 121 and the second shell 122 is relatively large, thereby facilitating the airflow in the heating element and the shell. Flow between 12 and facilitate heat dissipation of the housing 12.

In the present embodiment, the ground terminal 16 extends outward from the first side plate 1210 of the first case 121, and the ground terminal 16 and the first case 121 have an integral structure. The ground terminal 16 is connected to the first raised structure 111. As such, the formation of the ground terminal 16 is easy.

In some embodiments, the first raised structure 111 includes a plurality of first protrusions 113 that are spaced apart. The second raised structure 112 includes a plurality of second protrusions 114 that are spaced apart. Each of the first protrusions 113 is disposed opposite to the corresponding one of the second protrusions 114, and the heating element is held by the plurality of first protrusions 113 and the plurality of second protrusions 114

As such, the plurality of first protrusions 113 and the plurality of second protrusions 114 serve as a better support, and heat can be dispersedly transmitted to the housing 12 through the plurality of protrusions without causing a certain The heat in the parts is too concentrated, causing the housing 12 to be partially overheated.

Specifically, the first inner surface 1211 of the first shell 121 is provided with four first protrusions 113, and the four first protrusions 113 are distributed in four corners of a square shape. The second inner surface 1221 of the second shell 122 is provided with four second protrusions 114, and the four second protrusions 114 are distributed in a square manner in four corners. The four first protrusions 113 respectively correspond to the four second protrusions 114.

In the present embodiment, the first protrusions 113 have a truncated cone shape, and the second protrusions 114 have a truncated cone shape. Thus, the above projections are easy to form.

It can be understood that, in order to further improve the heat insulating effect of the first protrusion 113 and the second protrusion 114, the first protrusion 113 and the second protrusion 114 are both hollow structures.

In some embodiments, the second inner surface 1221 of the second shell 122 protrudes from the limiting structure 13 . The second protruding structure 112 is spaced apart from the limiting structure 13 . The limiting structure 13 is closer to the outer side of the second shell 122 with respect to the second raised structure 112. The height h1 of the limiting structure 13 is greater than the height h2 of the second protruding structure 112 (as shown in FIG. 12).

Thus, the formation of the limiting structure 13 is relatively simple. Moreover, the limiting structure 13 can better limit the heating element, so that the position of the heating element is not easily offset.

In the present embodiment, the height h1 of the limiting structure 13 protruding from the second inner surface 1221 of the second shell 122 is greater than the height h2 of the second protruding structure 112 protruding from the second inner surface 1221 of the second shell 122.

In some embodiments, the limiting structure 13 includes a plurality of limiting protrusions 131 that are spaced apart. The side of the heating element abuts between the sides of the plurality of limiting projections 131.

Specifically, in the present embodiment, the limiting protrusion 131 has a conical shape. The number of the limit projections 131 is four. The four limiting protrusions 131 are protruded from the second inner surface 1221 of the second shell 122, and the four limiting protrusions 131 are distributed in four corners of a square shape. The second protruding structure 112 includes four second protrusions 114, and the four second protrusions 114 are distributed between the four limiting protrusions 131 in a four-corner manner. The height of the protrusion of each of the limiting protrusions 131 is greater than the height of the protrusion of the second protrusions 114, and the area of the orthographic projection of each of the limiting protrusions 131 on the second inner surface 1221 is larger than that of the second protrusions 114. The area of the orthographic projection of the second inner surface 1221. The heating element is in interference fit with the four second protrusions 114 and is resisted between the four limiting protrusions 131.

Of course, it can be understood that, in order to further improve the heat insulation effect of the limiting structure 13, each of the limiting protrusions 131 can be made into a hollow structure.

In some embodiments, the first side panel 1210 of the first housing 121 is formed with a card slot structure 123. A card structure 124 is protruded from the outer side of the second side plate 1220 of the second shell 122. The card package structure 124 is provided with the card slot structure 123 such that the second case 122 and the first case 121 are connected. The second side plate 1220 of the second case 122 is located inside the first side plate 1210 of the first case 121.

As such, the manner in which the first case 121 and the second case 122 are connected is relatively simple, and the structure of the case 12 formed by connecting the first case 121 and the second case 122 is relatively stable.

Specifically, in the present embodiment, the first case 121 includes a first bottom plate 1212 and two first side plates 1210 connected to opposite sides of the first bottom plate 1212. The two first side panels 1210 are substantially perpendicular to the first bottom panel 1212 and form opposite sides of the first bottom panel 1212. The first inner surface 1211 of the first shell 121 constitutes an inner surface of the first bottom plate 1212, that is, the inner surface of the first bottom plate 1212 is convexly provided with a first convex structure 111. The second case 122 includes a second bottom plate 1222 and two second side plates 1220 connected to opposite sides of the second bottom plate 1222. The two second side plates 1220 are respectively inclined toward the second bottom plate 1222 with respect to the second bottom plate 1222, and constitute opposite sides of the second bottom plate 1222. The second inner surface 1221 of the second shell 122 constitutes an inner surface of the second bottom plate 1222, that is, the inner surface of the second bottom plate 1222 is convexly provided with a second protruding structure 112 and a limiting structure 13 which are spaced apart.

Wherein, since the two second side plates 1220 are inclined inwardly with respect to the second bottom plate 1222, when the second shell 122 is mounted on the first shell 121, the two second side plates 1220 are more easily accommodated in the first The inside of the two first side plates 1210 of the case 121.

In some embodiments, the card slot structure 123 includes a plurality of card slots 1231 that are spaced apart. The card package structure 124 includes a plurality of card packs 1241 that are spaced apart. The plurality of card packages 1241 are respectively provided with a plurality of card slots 1231 such that the card package structure 124 is configured with the card slot structure 123.

Specifically, in the present embodiment, the card slot structure 123 includes four card slots 1231. Each of the first side plates 1210 of the first case 121 is formed with two card slots 1231 spaced apart. The four card slots 1231 are distributed in four corners of a trapezoid. The card package structure 124 includes four card packages 1241. Each of the second side plates 1220 of the second casing 122 is formed with two card packages 1241 spaced apart. The four card packages 1241 are distributed in four corners of a trapezoid.

It should be noted that the number of the card slots 1231 is not limited to the above-mentioned number, and the number of the card packages 1241 is not limited to the above-described number.

In certain embodiments, the heater 10 includes a wire harness (not shown) and a protective sleeve (not shown) constructed of an insulating material. One end of the wire harness is electrically connected to the heating element, and the other end of the wire harness is passed through a protective sleeve to electrically connect the external circuit.

In this way, the protective sleeve can protect the wire harness from insulation.

In the present embodiment, one end of the wire harness is electrically connected to the heating element, and the other end of the wire harness is passed through the protective cover and can be extended from the side plate of the casing 10 together with the protective cover.

The protective cover is made of silicone material. Thus, the protective cover has better insulation and protection.

Referring to Fig. 13, a hot air device 20 according to an embodiment of the present invention includes an air inlet portion 21, an air outlet portion 22, and a heater 10 according to any of the above embodiments. The heater 10 is connected to the air inlet portion 21 and the air outlet portion 22.

In the above-described hot air device 20, since the heating element is supported by the convex structure 11 in the casing 12, the contact area of the heating element with the casing 12 can be reduced, thereby reducing the heat transfer of the heating element to the casing 12 and the external object, thereby avoiding The user burns when using the dishwasher 100.

It should be noted that the hot air device 20 can be used in the dishwasher 100. For example, in some examples, the hot air device 20 is mounted on the side panels 31 of the liner 30 of the dishwasher 100.

In some embodiments, the hot air device 20 is provided with an air flow passage 23 through the air inlet portion 21, the heater 10, and the air outlet portion 22. The casing 12 is formed with a duct 120. The air flow passage 23 includes a duct 120. The hot air unit 20 includes a flow baffle 24 located within the air flow passage 23. The airflow baffle 24 is configured to close and open the airflow passage 23. The air flow baffle 24 is located inside the air inlet portion 21.

Specifically, in conjunction with FIG. 13, the air inlet portion 21 incorporates a fan 25. An air inlet 211 is defined in a side surface of the air inlet portion 21. The fan 25 is disposed close to the air inlet 211. The air outlet portion 22 is provided with an air outlet 221 . The air inlet 211 connects the outlet 32 of the liner 30 of the dishwasher 100. The air outlet 221 connects the inlet 33 of the liner 30 of the dishwasher 100. When the hot air device 20 is in operation, the heater 10 starts heating, and the fan 25 is activated and inhales from the inside of the bladder 30. The airflow in the inner tank 30 can enter the hot air device 20 through the outlet 32 and the air inlet 211, and the heating portion 12 heats the airflow entering the heater 10, and the heated airflow enters the inner tank 30 through the air outlet 221 and the inlet 33. Inside. This cycle increases the drying efficiency of the dishwasher 100.

In the present embodiment, the airflow baffle 24 is configured to be able to close the airflow passage 23 (the airflow flap 24 as shown by the solid line in FIG. 13) by its own gravity and to open the airflow passage 23 under the wind driven by the wind turbine 25. The fan 25 is disposed in the air inlet portion 21.

In the embodiment shown in FIG. 13, the airflow baffle 24 is located within the air inlet portion 21. More specifically, the side wall of the air flow passage 23 in the air inlet portion 21 is provided with a fixing portion 26, the fixing portion 26 is provided with a shaft hole 261, and the side of the air flow baffle 24 is fixed with a rotating shaft 262, and the rotating shaft 262 is rotatably In the shaft hole 261, this enables the airflow flap 24 to be rotatably disposed in the air inlet portion 21 (see Fig. 13).

When the blower 25 of the hot air device 20 is closed, the airflow flap 24 can close the airflow passage 23 located in the air inlet portion 21 by its own gravity. When the blower 25 of the hot air device 20 is turned on, the airflow formed by the rotation of the blower 25 can blow up the airflow baffle 24, so that the airflow baffle 24 can open the airflow passage 23 located in the air inlet portion 21. Thus, the manner in which the airflow baffle 24 opens and closes the airflow passage 23 is relatively simple.

Referring to FIG. 14, a dishwasher 100 according to an embodiment of the present invention includes a liner 30 and the above described hot air device 20. The hot air device 20 is mounted on the outer surface of the side plate 31 of the inner liner 30.

In the dishwasher 100 described above, since the heating element is supported by the raised structure 11 in the housing 12, the contact area of the heating element with the housing 12 can be reduced, thereby reducing heat transfer from the heating element to the housing 12 and the external object. Avoid users getting burns when using the dishwasher 100.

Specifically, in the example shown in FIG. 14, the hot air device 20 is mounted on the outer surface of the right side plate 31 of the inner liner 30.

In the present invention, the first feature "on" or "under" the second feature may include direct contact of the first and second features, and may also include first and second features, unless otherwise specifically defined and defined. It is not in direct contact but through additional features between them. Moreover, the first feature "above", "above" and "above" the second feature includes the first feature directly above and above the second feature, or merely indicating that the first feature level is higher than the second feature. The first feature "below", "below" and "below" the second feature includes the first feature directly below and below the second feature, or merely the first feature level being less than the second feature.

The disclosure herein provides many different embodiments or examples for implementing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described herein. Of course, they are merely examples and are not intended to limit the invention. In addition, the present invention may be repeated with reference to the numerals and/or reference numerals in the various examples, which are for the purpose of simplicity and clarity, and do not indicate the relationship between the various embodiments and/or arrangements discussed. Moreover, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the use of other processes and/or the use of other materials.

In the description of the present specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples", etc. Particular features, structures, materials or features described in the examples are included in at least one embodiment or example of the invention. In the present specification, the schematic representation of the above terms does not necessarily mean the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

While the embodiments of the present invention have been shown and described, the embodiments of the invention may The scope of the invention is defined by the claims and their equivalents.

Claims

A heater for a dishwasher, characterized in that the heater comprises a casing, a heating element located in the casing, the casing is convexly provided with a convex structure, and the casing is also protruded a constraining structure spaced apart from the constraining structure, the raised structure supporting the heating element, the limiting structure being configured to support the heating element and to limit the heating element in the The position within the housing moves.
The heater of claim 1 wherein said housing is substantially rectangular in shape.
The heater of claim 1 wherein said heater includes a ground terminal extending outwardly from said housing, said raised structure connecting said ground terminal.
A heater according to claim 1, wherein said convex structure is made of a conductive material, and said ground terminal is made of a conductive material.
A heater according to claim 1, wherein said ground terminal is in the form of a sheet.
The heater of claim 1 wherein said housing includes a first and second housings that are coupled;

The protruding structure includes a first convex structure and a second convex structure, and an inner surface of the first shell is convexly provided with the first convex structure, and an inner surface of the second shell is convexly provided a second raised structure, an inner surface of the first shell being opposite the inner surface of the second shell, the heating element being clamped by the first raised structure and the second raised structure.
The heater of claim 6 wherein said heating element is held by said first raised structure and said second raised structure and is in an interference fit.
The heater of claim 1 wherein said heating element is a PTC thermistor.
The heater according to claim 6, wherein said first convex structure comprises a plurality of first protrusions spaced apart, and said second protrusion structure comprises a plurality of second protrusions spaced apart, Each of the first protrusions is disposed opposite to a corresponding one of the second protrusions, and the heating element is sandwiched by the plurality of first protrusions and the plurality of second protrusions.
A heater according to claim 9, wherein said first inner surface of said first casing is provided with four said first projections, and four of said first projections are square four Distributed in a corner manner, the second inner surface of the second shell is provided with four second protrusions, and the four second protrusions are distributed in four corner manners, and the four first protrusions are respectively Corresponding to four of the second protrusions.
The heater according to claim 9, wherein said first projection has a truncated cone shape and said second projection has a truncated cone shape.
The heater according to claim 9, wherein said first projection and said second projection are both hollow structures.
The heater according to claim 6, wherein the inner surface of the second shell is convexly provided with the limiting structure, and the second protruding structure is spaced apart from the limiting structure, the limit The bit structure is closer to the outer side of the second shell relative to the second raised structure, and the height of the stop structure is greater than the height of the second raised structure.
The heater according to claim 13, wherein a height of said limiting structure protruding from said second inner surface of said second casing is greater than a height of said second convex structure from said second casing The height of the inner surface of the two protrusions.
The heater according to claim 13, wherein said limiting structure comprises a plurality of limiting projections spaced apart, and a side surface of said heating element abuts a side of said plurality of limiting projections between.
The heater according to claim 13, wherein said limiting projection has a conical shape.
The heater according to claim 6, wherein the side plate of the first casing is formed with a card slot structure, and the outer side of the side plate of the second casing is convexly provided with a card package structure, and the card package structure card The card slot structure is configured such that the second case and the first case are connected, and a side plate of the second case is located inside the side plate of the first case.
The heater according to claim 17, wherein said card slot structure comprises a plurality of card slots arranged at intervals, said card package structure comprising a plurality of card packages arranged at intervals, said plurality of card packages respectively being card The plurality of card slots are disposed such that the card package structure latches the card slot structure.
The heater according to claim 1, wherein the limiting structure comprises a plurality of limiting protrusions disposed at intervals, and a side surface of the heating element abuts against a side surface of the plurality of limiting protrusions between.
A hot air device comprising an air inlet portion, an air outlet portion, and the heater according to any one of claims 1 to 19, wherein the heater connects the air inlet portion and the air outlet portion.
A dishwasher characterized by comprising a liner and the hot air device according to claim 20, the hot air device being mounted on an outer surface of the side panel of the inner casing.