WO2019000925A1

WO2019000925A1 - Hot air device and dishwasher

Info

Publication number: WO2019000925A1
Application number: PCT/CN2018/073702
Authority: WO
Inventors: 辛载奎; 仇灿华; 彭剑豪; 韩冰; 彭满华; 徐刚
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: 2017-06-30
Filing date: 2018-01-23
Publication date: 2019-01-03
Also published as: CN207785102U

Abstract

Provided are a hot air device (56) and a dishwasher (12). The hot air device (56) comprises an air inlet part (58), an air outlet part (60) and a heater (10), wherein the heater (10) is connected to the air inlet part (58) and the air outlet part (60). The hot air device (56) is provided with an airflow passage (74) penetrating the air inlet part (58), the heater (10) and the air outlet part (60). The hot air device (56) comprises an airflow baffle plate (76) rotatably arranged in the airflow passage (74), wherein the airflow baffle plate (76) is configured to close and open the airflow passage (74).

Description

Hot air unit and dishwasher

Priority information

The present application claims priority to and the benefit of the patent application No. JP-A-------

Technical field

The present invention relates to the field of household appliances, and more particularly to a hot air device and a dishwasher.

Background technique

In the related art, the dishwasher includes a hot air device that blows hot air into the dishwasher chamber during the drying phase to accelerate the drying of the dishes. However, when the dishwasher is in the washing stage, the water vapor in the chamber enters the hot air device, which easily causes the electrical components in the hot air device to be damaged by moisture, thereby affecting the service life of the hot air device.

Summary of the invention

Embodiments of the present invention provide a hot air device and a dishwasher.

A hot air device according to an embodiment of the present invention includes an air inlet portion, an air outlet portion, and a heater, the heater is connected to the air inlet portion and the air outlet portion, and the hot air device is provided through the air inlet portion and the heater And an air flow passage of the air outlet portion, the hot air device comprising a air flow baffle rotatably disposed in the air flow passage, the air flow baffle being configured to close and open the air flow passage.

In the above hot air device, since the air flow baffle is configured to close and open the air flow passage, when the air flow baffle closes the air flow passage, the hot air device can block water vapor in the dishwasher chamber from entering the heater, thereby avoiding the heater The electrical components are damaged by moisture, which guarantees the service life of the hot air device.

In some embodiments, the air outlet portion is provided with an air outlet, and the air outlet portion is provided with a plurality of spaced arc-shaped baffles, and one end of the arc-shaped baffle is connected to the air outlet.

In some embodiments, the side wall of the air flow passage in the air outlet portion is provided with a fixing portion, the fixing portion is provided with a shaft hole, and a side of the air flow baffle is fixed with a rotating shaft, and the rotating shaft is rotatably disposed on the shaft In the hole.

In some embodiments, the heater includes a housing and a heating portion located within the housing, the housing being convexly provided with a raised structure that supports the heating portion.

In some embodiments, the housing is joined by a first shell and a second shell.

In some embodiments, the housing includes opposing first and second inner surfaces, the at least one of the first inner surface and the second inner surface being provided with the raised structure.

In some embodiments, the raised structure includes a plurality of spaced apart protrusions that support the heating portion.

In some embodiments, the projections are in the shape of a truncated cone.

In some embodiments, the outer side of the housing is provided with a fuse.

In some embodiments, the outer side of the housing is provided with a mounting portion, and the mounting portion is provided with a mounting hole, and the fuse is fixedly engaged with the mounting hole to be fixed on the mounting portion.

In some embodiments, a positioning portion is disposed in the housing, and the positioning portion is coupled to a side of the heating portion.

In some embodiments, the heating portion has a rectangular parallelepiped shape, and the positioning portion includes four stepped structures, each of which is connected to two side edges of a corner of the heating portion.

In some embodiments, the heating portion includes a heat dissipating plate and a heating member, the heat dissipating plate is coupled to the heating member, and the heat dissipating plate includes a fin that is bent back and formed, the fin being formed with a duct.

In some embodiments, the heat sink includes a frame, the heat sink is disposed in the frame, and the heating member is coupled to one side of the frame.

In some embodiments, the heating portion includes a heat dissipating plate and a heating member, the heat dissipating plate is connected to the heating member, and one side of the heat dissipating plate is formed with a plurality of fins disposed in parallel with each other, and the plurality of fins are formed There is a wind channel.

In some embodiments, the heat sink includes a substrate, the plurality of heat sinks being disposed in parallel on the same side of the substrate, the heating member being coupled to the other side of the substrate.

In some embodiments, the heating portion includes a heat dissipating plate and a heating member, and the heating member is disposed in the heat dissipating plate, and the opposite sides of the heat dissipating plate are formed with a plurality of fins disposed in parallel with each other, the plurality of fins A duct is formed between the fins.

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

In some embodiments, the airflow baffle is located within the plenum; or

The airflow baffle is located in the air inlet portion; or

The airflow baffle is located in the air outlet portion and the air inlet portion.

A dishwasher according to an embodiment of the present invention includes a cavity and the hot air device of any of the above embodiments, the hot air device being mounted on an outer surface of the side plate of the cavity.

In the above dishwasher, since the air flow baffle is configured to close and open the air flow passage, the hot air device can block the water vapor in the dishwasher chamber from entering the heater when the air flow baffle closes the air flow passage, thereby avoiding heating The electrical components of the device are damaged by moisture, which guarantees the service life of the hot air device.

The additional aspects and advantages of the invention will be set forth in part in the description which follows.

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 schematic cross-sectional view of a heater according to an embodiment of the present invention.

3 is a plan view showing 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 schematic cross-sectional view showing 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 further plan view showing the second casing of the heater of the embodiment of the present invention;

Figure 10 is a cross-sectional view showing a second case of the heater of the embodiment of the present invention;

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

Figure 12 is another schematic cross-sectional view of a heater according to an embodiment of the present invention;

Figure 13 is a cross-sectional view showing still another embodiment of the heater of the embodiment of the present invention;

Figure 14 is a schematic structural view of a hot air device according to an embodiment of the present invention;

Figure 15 is a plan view showing a hot air device according to an embodiment of the present invention;

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

17 is another schematic plan view of a hot air device according to an embodiment of the present invention;

Figure 18 is a plan view showing a dishwasher of an embodiment of the present invention;

Figure 19 is a perspective view of a dishwasher in accordance with an embodiment of the present invention.

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 "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 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.

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 integrally connected; may be mechanically connected, or may be electrically connected or may communicate with each other; may be directly connected or indirectly connected through an intermediate medium, may be internal communication of two elements or interaction of two elements relationship. 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.

The following disclosure 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 settings of specific examples are described below. 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 simplification and clarity, and do not indicate the relationship between the various embodiments and/or settings 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.

Referring to FIGS. 14 to 17, a hot air device 56 according to an embodiment of the present invention includes an air inlet portion 58, an air outlet portion 60, and a heater 10, and the heater 10 is connected to the air inlet portion 58 and the air outlet portion 60. The hot air device 56 is provided with an air flow passage 74 extending through the air inlet portion 58, the heater 10, and the air outlet portion 60. The hot air device 56 includes a air flow baffle 76 rotatably disposed in the air flow passage 74, and the air flow baffle 76 is configured to The air flow passage 74 is closed and opened.

In the above-described hot air device 56, since the air flow baffle 76 is configured to close and open the air flow passage 74, the hot air device 56 blocks the water vapor entering the cavity 72 of the dishwasher 12 when the air flow baffle 76 closes the air flow passage 74. To the heater 10, the electrical components of the heater 10 can be prevented from being damaged by moisture, and the service life of the hot air device 56 is ensured.

In addition, in the washing stage of the dishwasher 12, noise is generated when the spray arm injects water, and the air flow baffle 76 is in a state of closing the air flow passage 74 when the dishwasher 12 is in the washing stage, which can effectively reduce the dishwasher 12 Noise during operation.

Specifically, referring to Fig. 14 and Fig. 16, the air inlet portion 58 has a fan (not shown) built therein, and the side of the air inlet portion 58 is provided with an air inlet 64, and the fan is disposed near the air inlet 64. The air outlet portion 60 is provided with an air outlet 66 which connects the outlet 68 of the cavity of the dishwasher 12, and the air outlet 66 connects the inlet 70 of the cavity of the dishwasher 12 (see Fig. 19). When the hot air device 56 is in operation, the heater 10 initiates heating and the fan activates and draws air from the chamber 72. The airflow in the cavity 72 can enter the hot air device 56 through the outlet 68 and the air inlet 64. The heater 10 heats the airflow entering the heater 10. The heated airflow enters the cavity 72 from the air outlet 66 and the inlet 70. Inside. This cycle increases the drying efficiency of the dishwasher 12.

In addition, a plurality of arc-shaped baffles 73 are disposed in the air outlet portion 60. One end of the arc-shaped baffle 73 is connected to the air outlet 66, and the airflow from the upstream of the air outlet portion 60 can be smoothly introduced into the cavity. 72. As such, this reduces the noise of the dishwasher 12 during the drying phase.

In the present embodiment, the airflow baffle 76 is configured to be able to close the airflow passage 74 (such as the airflow baffle 76 shown by the solid line in FIG. 14) by its own gravity and to open the airflow passage 74 under the wind driven by the wind turbine (eg Airflow baffle 76) shown in phantom in Figure 14. The fan can be disposed in the air inlet portion 58.

In the embodiment shown in FIG. 14, the airflow baffle 76 is located within the plenum 60. More specifically, the side wall of the air flow passage 74 in the air outlet portion 60 is provided with a fixing portion 77. The fixing portion 77 is provided with a shaft hole 78. The side of the air flow baffle 76 is fixed with a rotating shaft 80, and the rotating shaft 80 can be rotatably disposed. In the shaft hole 78, this allows the air flow flap 76 to be rotatably disposed in the air outlet portion 60 (see Fig. 14).

When the fan of the hot air device 56 is turned off, the airflow baffle 76 can close the air flow passage 74 located in the air outlet portion 60 by its own gravity. When the fan of the hot air device 56 is turned on, the fan exhaust airflow can blow the airflow baffle 76 to enable the airflow baffle 76 to open the airflow passage 74 located in the air outlet portion 60. Thus, the manner in which the airflow baffle 76 opens and closes the airflow passage 74 is relatively simple.

The location of the inlet 70 of the cavity 72 is generally lower than the location of the outlet 68, with more water and water vapor at the inlet 70 than water and water vapor at the outlet 68. Therefore, when the dishwasher 12 is in the washing stage, the hot air device 56 is closed (including the heater 10 is closed and the fan is turned off), and the air flow baffle 76 closes the air flow passage 74 in the air outlet portion 60 to prevent water and water vapor from the cavity. The inlet 70 of 72 enters the heater 10.

It can be understood that in other embodiments, the airflow baffle 76 opening and closing the airflow passage 74 can also be driven by a motor. For example, the airflow baffle 76 is connected to the motor by a rotating shaft, and the motor drive shaft rotates to drive the airflow baffle 76 to rotate. Thereby, the air flow passage 74 is opened and closed.

In the embodiment shown in FIG. 16, the airflow baffle 76 is located within the air inlet portion 58, at which time the airflow baffle 76 is located downstream of the airflow of the fan within the air inlet portion 58. Or in other embodiments, the airflow baffle 76 is located in the air inlet portion 58 and the air outlet portion 60, that is, the airflow baffle 76 is disposed in the air inlet portion 58 and the air outlet portion 60, which makes the hot air device When the 56 is closed, the two air flow baffles 76 respectively close the air flow passage 74 located in the air inlet portion 58 and the air flow passage 74 located in the air outlet portion 60 to advance the moisture resistance of the lift heater 10.

In some embodiments, the heater 10 includes a housing 14 and a heating portion 16 located within the housing 14. The housing 14 is convexly provided with a raised structure 18 that supports the heating portion 16.

Thus, since the heating portion 16 is supported by the convex structure 18 in the casing 14, the contact area of the heating portion 16 with the casing 14 can be reduced, thereby reducing the heat transfer of the heating portion 16 to the casing 14 and the external object, thereby avoiding the user. Burns when using the dishwasher 12.

Specifically, referring to FIG. 2 to FIG. 10, the housing 14 may be connected by the first shell 20 and the second shell 22, so that the heating portion 16 is conveniently installed. The first case 20 and the second case 22 may be connected by means of screws, snaps or welding. The first case 20 and the second case 22 can clamp the heating portion 16.

In certain embodiments, the housing 14 includes opposing first and second

inner surfaces

24, 26, and at least one of the first, second, and second inner surfaces 26 is provided with a raised structure 18. As such, the formation of the raised structure 18 is relatively simple.

Specifically, in the examples shown in FIGS. 5 and 9, the first inner surface 24 is the inner lower surface of the first shell 20 and the second inner surface 26 is the inner upper surface of the second shell 22.

At least one of the first inner surface 24 and the second inner surface 26 is provided with a raised structure 18, which means that the heating portion 16 can be a single-sided support, that is, the first inner surface 24 is provided with The raised structure 18, or the second inner surface 26 is provided with a raised structure 18; in another case, the heating portion 16 can be a double-sided support, ie both the first inner surface 24 and the second inner surface 26 are provided with protrusions Structure 18. In the embodiment shown in Figures 2 and 12, the heating portion 16 is double-sided supported.

In certain embodiments, the raised structure 18 includes a plurality of spaced apart projections 28 that support the heating portion 16. In this way, the plurality of protrusions 28 can better support the heating portion 16, and heat can be dispersedly transmitted to the casing 14 through the plurality of protrusions 28 without causing heat to a certain portion of the casing 14. Too concentrated, resulting in partial overheating of the housing 14.

Specifically, the first inner surface 24 is provided with four protrusions 28, and the four protrusions 28 are distributed in four corners of a square shape. The second inner surface 26 is provided with four protrusions 28, and the four protrusions 28 are distributed in four corners of a square shape.

In the present embodiment, the projections 28 have a truncated cone shape, and thus the projections 28 are easily formed.

In some embodiments, referring to FIG. 2, the outer side of the housing 14 is provided with a fuse 30. Thus, when the fan of the hot air device fails and the temperature of the heating portion 16 is too high, the fuse is blown, thereby achieving the purpose of protecting the dishwasher 12.

Specifically, the outer side of the casing 14 is provided with a mounting portion 32, and the mounting portion 32 is provided with a mounting hole 34, and the fuse 30 is fixedly fitted to the mounting portion 32 by an interference fit with the mounting hole 34.

In some embodiments, a positioning portion 36 is disposed within the housing 14 and the positioning portion 36 is coupled to a side of the heating portion 16. As such, the position of the heating portion 16 can be positioned by the positioning portion 36 to avoid displacement of the heating portion 16 within the heater 10.

Specifically, in the present embodiment, the heating portion 16 has a rectangular parallelepiped shape, and the positioning portion 36 includes four stepped structures 38, each of which is connected to both side edges of one corner of the heating portion 16. In this way, the step structure 38 can position the two sides of the heating portion 16 to ensure the positioning effect of the heating portion 16.

In the present embodiment, four step structures 38 are disposed in the second casing 22.

In some embodiments, referring to FIG. 2, the heating portion 16 includes a heat dissipation plate 40 and a heating member 42. The heat dissipation plate 40 is connected to the heating member 42. The heat dissipation plate 40 includes a heat sink 44 that is bent back and forth. Wind tunnel 46. Thus, the fins 44 are formed with the air passages 46, so that the airflow entering the heater 10 can be quickly heated to ensure the heating efficiency of the airflow.

Specifically, the heat dissipation plate 40 includes a frame body 48. The heat dissipation plate 44 is disposed in the frame body 48, and the heating member 42 is coupled to one side of the frame body 48. The raised structure 18 abuts the heating member 42 and the frame 48. That is, in the present embodiment, the heating portion 16 is double-sided supported.

The folded back heat sink 44 forms a plurality of air ducts 46 in the frame 48, and the air flow can enter the air duct 46 from one side of the heater 10 (the right side as shown in FIG. 1), and is in the air duct 46. The fins 44 exchange heat so that the airflow is heated, and the heated airflow is output from the other side of the heater 10 (the left side as shown in Fig. 1). The fins 44, which are folded back, allow the airflow to exchange heat with the fins 44 as much as possible, ensuring the heating efficiency of the airflow.

In certain embodiments, the air duct 46 formed by the heat sink 40 can be part of the air flow passage 74.

In some embodiments, referring to FIG. 11 and FIG. 12, the heating portion 16 includes a heat dissipation plate 40 and a heating member 42. The heat dissipation plate 40 is connected to the heating member 42. One side of the heat dissipation plate 40 is formed with a plurality of parallel intervals. A fin 46 is formed between the fins 44 and the plurality of fins 44. Thus, the air passages 46 are formed between the fins 44, so that the airflow entering the heater 10 can be quickly heated to ensure the heating efficiency of the airflow. Further, the structure of the heat dissipation plate 40 of the present embodiment is relatively simple.

Specifically, the heat dissipation plate 40 includes a substrate 50, a plurality of heat dissipation fins 44 are disposed in parallel on the same side of the substrate 50, and the heating member 42 is connected to the other side of the substrate 50. The raised structure 18 abuts the heating element 42, that is, the heating portion 16 is supported on one side.

In some embodiments, referring to FIG. 11 and FIG. 13, the heating portion 16 includes a heat dissipation plate 40 and a heating member 42. The heating member 42 is disposed in the heat dissipation plate 40. The opposite sides of the heat dissipation plate 40 are formed to be parallel to each other. A plurality of fins 44 are provided, and a plurality of fins 44 are formed between the plurality of fins 44. Thus, the air passages 46 are formed between the fins 44, so that the airflow entering the heater 10 can be quickly heated to ensure the heating efficiency of the airflow.

Specifically, the heat dissipation plate 40 includes a first substrate 52 and a second substrate 54 which are disposed at intervals. The plurality of heat dissipation fins 44 are disposed in parallel on the first side of the first substrate 52, and the plurality of heat dissipation fins 44 are disposed in parallel on the second substrate 54. On the side, the first side and the second side are opposite sides of the heat dissipation plate 40, and the heating member 42 is sandwiched by the first substrate 52 and the second substrate 54. The raised structure 18 can resist the heat sink 44, and the heating portion 16 can be single-sided or double-sided supported.

In the present embodiment, since the air passages 46 are formed on opposite sides of the heat dissipation plate 40, the area where the airflow is heated is increased, and the heating efficiency of the airflow is further improved.

In certain embodiments, the heating element 42 is a PTC thermistor. Thus, the PTC thermistor is easy to control, simplifying the control of the heater 10.

Specifically, the PTC (Positive Temperature Coefficient) thermistor is a positive temperature coefficient thermistor.

In addition, the height of the protrusion can be set according to the power of the PTC thermistor such that the temperature rise of the housing 14 is controlled within a preset range when the heater 10 is in operation. In one example, the height P of the protrusions is 0.5 mm. The PTC thermistor can be connected to the controller of the dishwasher 12 via a connecting line 57.

Referring to FIGS. 18-19, a dishwasher 12 according to an embodiment of the present invention includes a cavity 72 and a hot air device 56 of any of the above embodiments. The hot air device 56 is mounted on the outer surface of the side plate 82 of the cavity 72.

In the dishwasher 12 described above, since the airflow baffle 76 is configured to close and open the airflow passage 74, the hot air device 56 can block water vapor in the cavity 72 of the dishwasher 12 when the airflow baffle 76 closes the airflow passage 74. Entering the heater 10, the electrical components of the heater 10 are prevented from being damaged by moisture, and the service life of the hot air device 56 is ensured.

Specifically, in the example shown in FIG. 19, the hot air device 56 is mounted on the outer surface of the right side plate 82 of the cavity 72.

In this embodiment, referring to FIG. 14, a plurality of buckles 84 are provided on the outer side of the air inlet portion 58. The right side plate 82 of the cavity 72 is provided with a card hole (not shown), and the hot air device 56 passes. The engagement of the buckle 84 and the card hole is mounted on the outer surface of the right side plate 82. It will be appreciated that in other embodiments, the hot air device 56 may also be mounted on the outer surface of the side panel 82 of the cavity 72 by screws or welding.

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. The specific features, structures, materials or characteristics described in the embodiments or 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.

Although the embodiments of the present invention have been shown and described, it is understood that the above-described embodiments are illustrative and are not to be construed as limiting the scope of the invention. The embodiments are subject to changes, modifications, substitutions and variations.

Claims

A hot air device, comprising: an air inlet portion, an air outlet portion and a heater, wherein the heater is connected to the air inlet portion and the air outlet portion, the hot air device is provided through the air inlet portion, the heater and An air flow passage of the air outlet portion, the hot air device comprising a air flow baffle rotatably disposed in the air flow passage, the air flow baffle being configured to close and open the air flow passage.
The hot air device according to claim 1, wherein the air outlet portion is provided with an air outlet, and the air outlet portion is provided with a plurality of spaced arc-shaped baffles, one end of the arc-shaped baffle is connected to the air outlet tuyere.
The hot air device according to claim 1, wherein a side wall of the air flow passage in the air outlet portion is provided with a fixing portion, the fixing portion is provided with a shaft hole, and a side of the air flow baffle is fixed with a rotating shaft, and the rotating shaft can Rotatingly disposed in the shaft hole.
The hot air device according to claim 1, wherein the heater comprises a housing and a heating portion located in the housing, and the housing has a convex structure protruding therein, the protruding structure supporting the heating portion.
The hot air device according to claim 4, wherein the casing is formed by joining the first casing and the second casing.
The hot air device according to claim 4, wherein the housing includes opposing first inner surfaces and second inner surfaces, and at least one of the first inner surface and the second inner surface is provided with the Raised structure.
The hot air device according to claim 4, wherein the convex structure comprises a plurality of spaced apart protrusions, the plurality of protrusions supporting the heating portion.
The hot air device according to claim 7, wherein the projection has a truncated cone shape.
A hot air device according to claim 4, wherein the outer side of the casing is provided with a fuse.
The hot air device according to claim 9, wherein the outer side of the casing is provided with a mounting portion, and the mounting portion is provided with a mounting hole, and the fuse is fixedly engaged with the mounting hole and fixed on the mounting portion. .
The hot air device according to claim 4, wherein a positioning portion is provided in the housing, and the positioning portion is coupled to a side of the heating portion.
The hot air device according to claim 11, wherein the heating portion has a rectangular parallelepiped shape, and the positioning portion includes four stepped structures, each of which is connected to both side edges of a corner portion of the heating portion.
The hot air device according to claim 4, wherein the heating portion comprises a heat dissipating plate and a heating member, the heat dissipating plate is connected to the heating member, and the heat dissipating plate comprises a fin that is bent back and bent, and the heat dissipating fin forms a wind. Road.
The hot air device according to claim 13, wherein the heat dissipation plate comprises a frame, the heat dissipation plate is disposed in the frame, and the heating member is connected to one side of the frame.
The hot air device according to claim 4, wherein the heating portion comprises a heat dissipating plate and a heating member, the heat dissipating plate is connected to the heating member, and one side of the heat dissipating plate is formed with a plurality of fins arranged in parallel with each other. A duct is formed between the plurality of fins.
The hot air device according to claim 15, wherein the heat dissipation plate comprises a substrate, the plurality of heat dissipation fins are disposed in parallel on the same side of the substrate, and the heating member is coupled to the other side of the substrate.
The hot air device according to claim 4, wherein the heating portion comprises a heat dissipating plate and a heating member, wherein the heating member is disposed in the heat dissipating plate, and the opposite sides of the heat dissipating plate are formed with a plurality of parallel intervals The heat sink has a duct formed between the plurality of fins.
The hot air device according to any one of claims 13-17, wherein the heating member is a PTC thermistor.
The hot air device according to claim 1, wherein the air flow baffle is located in the air outlet portion; or

The airflow baffle is located in the air inlet portion; or

The airflow baffle is located in the air outlet portion and the air inlet portion.
A dishwasher comprising a cavity and the hot air device according to any one of claims 1 to 19, the hot air device being mounted on an outer surface of the side plate of the cavity.