CN112401799A

CN112401799A - Dish washing machine

Info

Publication number: CN112401799A
Application number: CN202011270996.XA
Authority: CN
Inventors: 韩冰; 辛载奎; 仇灿华; 彭满华; 彭剑豪
Original assignee: Midea Group Co Ltd; Foshan Shunde Midea Washing Appliances Manufacturing Co Ltd
Current assignee: Midea Group Co Ltd; Foshan Shunde Midea Washing Appliances Manufacturing Co Ltd
Priority date: 2017-06-30
Filing date: 2017-06-30
Publication date: 2021-02-26
Anticipated expiration: 2037-06-30
Also published as: CN112401799B; CN112386203A; CN107157421B; CN112386203B; WO2019000927A1; CN107157421A

Abstract

The invention discloses a dishwasher. The dish washer comprises a cavity and a hot air device, wherein the hot air device is arranged on the outer surface of a side plate of the cavity. The hot air device comprises an air inlet part, an air outlet part and a heater, wherein the heater is connected with the air inlet part and the air outlet part, and the hot air device is provided with an airflow channel which penetrates through the air inlet part, the heater and the air outlet part. The side of this air inlet portion has seted up the air intake, and this air outlet portion has seted up the air outlet, and the import of this cavity is connected to this air outlet, and this heater heats the air current that gets into in this heater, and the air current after being heated gets into in this cavity by this air outlet and this import.

Description

Dish washing machine

Technical Field

The invention relates to the technical field of household appliances, in particular to a dish washing machine.

Background

In the related art, when the dishwasher is in a drying stage, hot air is blown into the dishwasher cavity by the hot air device to accelerate the drying of the dishware. The hot air device is generally installed on the outer surface of the side plate of the cavity, when the hot air device works, the temperature of the side plate of the cavity is easily overhigh, and potential safety hazards such as scalding are caused to a user by the overhigh side plate.

Disclosure of Invention

The present invention has been made to solve at least one of the problems occurring in the related art. To this end, embodiments of the present invention need to provide a dishwasher.

The dishwasher comprises a cavity and a hot air device, wherein the hot air device is arranged on the outer surface of a side plate of the cavity;

the hot air device comprises an air inlet part, an air outlet part and a heater, wherein the heater is connected with the air inlet part and the air outlet part, and is provided with an airflow channel penetrating through the air inlet part, the heater and the air outlet part;

the side of this air inlet portion has seted up the air intake, and this air outlet portion has seted up the air outlet, and the import of this cavity is connected to this air outlet, and this heater heats the air current that gets into in this heater, and the air current after being heated gets into in this cavity by this air outlet and this import.

In some embodiments, a fan is arranged in the air inlet portion, the fan is arranged close to the air inlet, and the air inlet is connected with the outlet of the cavity;

when the hot air device works, the heater is started to heat, the fan is started and sucks air from the cavity, air flow in the cavity enters the hot air device through the outlet and the air inlet, the heating part heats the air flow entering the heater, and the heated air flow enters the cavity through the air outlet and the inlet.

In some embodiments, a plurality of arc-shaped guide plates are further disposed in the air outlet portion at intervals, one end of each arc-shaped guide plate is connected to the air outlet, and the arc-shaped guide plates smoothly guide airflow from the upstream of the air outlet portion into the cavity.

In some embodiments, the heater includes a housing and a heating portion located in the housing, the heating portion includes a heat dissipation plate and a heating element, the heat dissipation plate is connected to the heating element, the heat dissipation plate is formed with an air duct, and the air duct is a part of the air flow passage.

In some embodiments, the heat dissipation plate includes a winding fin, and the heat dissipation fin is formed with the air duct.

In some embodiments, a plurality of heat dissipation fins are formed on one side of the heat dissipation plate and are parallel to each other and spaced apart from each other, and an air duct is formed between the plurality of heat dissipation fins.

In some embodiments, the heat dissipation plate includes a substrate, the plurality of heat dissipation fins are disposed in parallel on a same side of the substrate, and the heating element is connected to another side of the substrate.

In some embodiments, the heating element is disposed in the heat dissipation plate, a plurality of heat dissipation fins are formed on two opposite sides of the heat dissipation plate, the heat dissipation fins are parallel to each other and spaced apart from each other, and the air duct is formed between the heat dissipation fins.

In some embodiments, the heat dissipation plate includes a first substrate and a second substrate disposed at an interval, a plurality of the heat dissipation fins are disposed in parallel on a first side of the first substrate, a plurality of the heat dissipation fins are disposed in parallel on a second side of the second substrate, the first side and the second side are opposite sides of the heat dissipation plate, and the heating element is sandwiched by the first substrate and the second substrate.

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

In some embodiments, the heat dissipation plate includes a frame and a plurality of heat dissipation fins, the plurality of heat dissipation fins are disposed in the frame, the air duct is formed between the plurality of heat dissipation fins, and the air flow enters the air duct from one side of the heater, exchanges heat with the heat dissipation fins in the air duct, and is output from the other side of the heater.

Additional aspects and advantages of embodiments of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

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

FIG. 2 is a schematic cross-sectional view of a heater according to an embodiment of the invention;

FIG. 3 is a schematic plan view of a first shell of a heater according to an embodiment of the invention;

FIG. 4 is another schematic plan view of the first shell of the heater of the embodiment of the present invention;

FIG. 5 is a further schematic plan view of the first shell of the heater according to an embodiment of the present invention;

FIG. 6 is a schematic cross-sectional view of a first shell of a heater according to an embodiment of the invention;

FIG. 7 is a schematic plan view of a second shell of the heater of an embodiment of the present invention;

FIG. 8 is another schematic plan view of a second shell of the heater of the embodiment of the present invention;

FIG. 9 is a further schematic plan view of a second shell of the heater according to an embodiment of the present invention;

FIG. 10 is a schematic cross-sectional view of a second shell of the heater of an embodiment of the present invention;

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

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

FIG. 13 is a schematic cross-sectional view of a further embodiment of a heater according to the present invention;

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

FIG. 15 is a schematic plan view of a hot air device according to an embodiment of the present invention;

FIG. 16 is another schematic view of the hot air device according to the embodiment of the present invention;

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

FIG. 18 is a schematic plan view of a dishwasher according to an embodiment of the present invention;

fig. 19 is a schematic perspective view of a dishwasher according to an embodiment of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "first", "second" and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The following disclosure provides many different embodiments or examples for implementing different features of the invention. To simplify the disclosure of the present invention, the components and settings of a specific example are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or reference letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or uses of other materials.

Referring to fig. 1, 2, 12, 13 and 19, a heater 10 according to an embodiment of the present invention is used in a dishwasher 12. The heater 10 includes a housing 14 and a heating portion 16 disposed within the housing 14, wherein a raised structure 18 is disposed within the housing 14, and the raised structure 18 supports the heating portion 16. Heating unit 16 includes heat radiating plate 40 and heating member 42, and heat radiating plate 40 is connected with heating member 42, and heat radiating plate 40 is formed with wind channel 46.

In the heater 10, since the heating part 16 is supported by the protrusion structure 18 in the housing 14, the contact area between the heating part 16 and the housing 14 can be reduced, and further, the heat transfer from the heating part 16 to the housing 14 and an external object can be reduced, thereby preventing a user from being burned when using the dishwasher 12. Meanwhile, the heat dissipation plate 40 is formed with the air duct 46, so that the air flow entering the heater 10 can be heated quickly, and the heating efficiency of the air flow is ensured.

Specifically, referring to fig. 2-10, the housing 14 may be formed by connecting a first shell 20 and a second shell 22, so that the heating portion 16 is convenient to install. The first and

second cases

20 and 22 may be connected by means of screws, snaps, or welding. The first shell 20 and the second shell 22 may clamp the heating part 16.

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

inner surfaces

24, 26, at least one of the first and second

inner surfaces

24, 26 being provided with the raised structure 18. In this way, the formation of the projection structure 18 is simple.

Specifically, in the example shown in fig. 5 and 9, the first inner surface 24 is an inner lower surface of the first shell 20, and the second inner surface 26 is an 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 the raised structures 18, meaning that, in one case, the heating portion 16 may be a single-sided support, i.e., the first inner surface 24 is provided with the raised structures 18, or the second inner surface 26 is provided with the raised structures 18; alternatively, heating portion 16 may be double-sided, i.e., first inner surface 24 and second inner surface 26 are each provided with raised structures 18. In the embodiment shown in fig. 2 and 12, the heating section 16 is a double-sided support.

In some embodiments, raised structure 18 includes a plurality of projections 28 spaced apart, and plurality of projections 28 support heating portion 16. In this way, the plurality of protrusions 28 can provide a better supporting function for the heating portion 16, and the heat can be distributed and transmitted to the housing 14 through the plurality of protrusions 28, so that the heat at a certain position on the housing 14 is not concentrated too much, which may cause the housing 14 to be locally overheated.

Specifically, the first inner surface 24 is provided with 4 protrusions 28, and the 4 protrusions 28 are distributed in a square four-corner manner. The second inner surface 26 is provided with 4 protrusions 28, and the 4 protrusions 28 are distributed in a square four-corner manner.

In the present embodiment, the projection 28 is formed in a circular truncated cone shape, and thus the projection 28 is easily formed.

In some embodiments, referring to FIG. 2, a fuse 30 is disposed on an outer side of the housing 14. Thus, when the temperature of the heating part 16 is too high due to the failure of the fan of the hot air device, the fuse is fused, thereby achieving the purpose of protecting the dish washer 12.

Specifically, the outer side of the housing 14 is provided with a mounting portion 32, the mounting portion 32 is provided with a mounting hole 34, and the fuse 30 is fixed on the mounting portion 32 by interference fit with the mounting hole 34.

In some embodiments, a positioning portion 36 is disposed in the housing 14, and the positioning portion 36 is connected to a side of the heating portion 16. In this way, the position of the heating portion 16 can be positioned by the positioning portion 36, and displacement of the heating portion 16 within the heater 10 is avoided.

Specifically, in the present embodiment, the heating portion 16 has a rectangular parallelepiped shape, and the positioning portion 36 includes four step structures 38, and each step structure 38 is connected to both sides of one corner position of the heating portion 16. Thus, the step structure 38 can position both sides of the heating portion 16, and the positioning effect of the heating portion 16 is ensured.

In the present embodiment, 4 step structures 38 are provided in the second case 22.

In some embodiments, referring to fig. 2, the heat dissipation plate 40 includes a winding heat dissipation fin 44, and the heat dissipation fin 44 is formed with an air duct 46. In this way, the heat sink 44 is formed with the air duct 46, so that the air flow entering the heater 10 can be rapidly heated, and the heating efficiency of the air flow is ensured.

Specifically, the heat dissipation plate 40 includes a frame 48, the heat dissipation sheet 44 is disposed in the frame 48, and the heating member 42 is connected to one side of the frame 48. The protrusion 18 abuts against the heating member 42 and the frame 48, that is, the heating portion 16 is supported on both sides in this embodiment.

The bent fins 44 form a plurality of air channels 46 in the frame 48, and the air flow can enter the air channels 46 from one side (the right side as viewed in fig. 1) of the heater 10, and exchange heat with the fins 44 in the air channels 46, so that the air flow is heated, and the heated air flow is output from the other side (the left side as viewed in fig. 1) of the heater 10. The roundabout bent radiating fins 44 can enable the airflow to exchange heat with the radiating fins 44 as much as possible, and the heating efficiency of the airflow is guaranteed.

In some embodiments, referring to fig. 11 and 12, a plurality of heat dissipation fins 44 are formed on one side of the heat dissipation plate 40 and spaced apart from each other in parallel, and an air duct 46 is formed between the plurality of heat dissipation fins 44. In this way, the air duct 46 is formed between the heat dissipation fins 44, so that the air flow entering the heater 10 can be rapidly heated, and the heating efficiency of the air flow is ensured. Further, the heat dissipation plate 40 of the present embodiment has a simple structure.

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 a heating member 42 is connected to the other side of the substrate 50. The raised structures 18 bear against the heating element 42, i.e., the heating portion 16 is a single-sided support.

In some embodiments, referring to fig. 11 and 13, the heating element 42 is disposed in the heat dissipation plate 40, a plurality of heat dissipation fins 44 are formed on opposite sides of the heat dissipation plate 40 and spaced apart from each other in parallel, and an air duct 46 is formed between the plurality of heat dissipation fins 44. In this way, the air duct 46 is formed between the heat dissipation fins 44, so that the air flow entering the heater 10 can be rapidly heated, and the heating efficiency of the air flow is ensured.

Specifically, the heat dissipation plate 40 includes a first substrate 52 and a second substrate 54 disposed at an interval, a plurality of heat dissipation fins 44 are disposed in parallel on a first side of the first substrate 52, a plurality of heat dissipation fins 44 are disposed in parallel on a second side of the second substrate 54, the first side and the second side are opposite sides of the heat dissipation plate 40, and the heating element 42 is sandwiched by the first substrate 52 and the second substrate 54. The raised structures 18 may abut the heat sink 44 and the heating portion 16 may be single-sided or double-sided.

In this embodiment, since the air ducts 46 are formed on the opposite sides of the heat dissipation plate 40, the heated area of the air flow is increased, and the heating efficiency of the air flow is further improved.

In some embodiments, the heating member 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 may be set according to the power of the PTC thermistor so that the temperature rise of the case 14 is controlled within a preset range when the heater 10 operates. In one example, the height P of the protrusions is 0.5 mm. The PTC thermistor may be connected to a controller of the dishwasher 12 by a connection 57.

Referring to fig. 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 the heater 10 according to any of the above embodiments, wherein the heater 10 is connected to the air inlet portion 58 and the air outlet portion 60.

In the hot air device 56, since the heating part 16 is supported by the protrusion structure 18 in the housing 14, the contact area between the heating part 16 and the housing 14 can be reduced, and further, the heat transfer from the heating part 16 to the housing 14 and external objects can be reduced, thereby preventing a user from being burned when using the dishwasher 12. Meanwhile, the heat dissipation plate 40 is formed with the air duct 46, so that the air flow entering the heater 10 can be heated quickly, and the heating efficiency of the air flow is ensured.

Specifically, referring to fig. 14 and 16, a fan (not shown) is disposed inside the air inlet portion 58, an air inlet 64 is disposed on a side surface of the air inlet portion 58, and the fan is disposed near the air inlet 64. The air outlet portion 60 is provided with an air outlet 66, the air inlet 64 is connected with an outlet 68 of the cavity of the dishwasher 12, and the air outlet 66 is connected with an inlet 70 of the cavity of the dishwasher 12. When the hot air device 56 is operated, the heater 10 is started to heat, and the fan is started to suck air from the cavity 72. The airflow in the cavity 72 can enter the hot air device 56 through the outlet 68 and the inlet 64, the heating part 16 heats the airflow entering the heater 10, and the heated airflow enters the cavity 72 through the outlet 66 and the inlet 70. So circulated, the drying efficiency of the dishwasher 12 can be improved.

In addition, a plurality of arc-shaped guide plates 73 are arranged in the air outlet part 60 at intervals, one end of each arc-shaped guide plate 73 is connected with the air outlet 66, and air flow from the upstream of the air outlet part 60 can be smoothly guided into the cavity 72. In this way, the noise of the dishwasher 12 during the drying phase can be reduced.

In some embodiments, referring to fig. 14 and 16, the hot air device 56 has an air flow passage 74 extending through the air inlet portion 58, the heater 10 and the air outlet portion 60, and the hot air device 56 includes an air flow damper 76 positioned within the air flow passage 74, the air flow damper 76 being configured to close and open the air flow passage 74. Thus, when the airflow baffle plate 76 closes the airflow channel 74, the hot air device 56 can block water and water vapor in the cavity 72 of the dishwasher 12 from entering the heating portion 16, so that the electrical components of the heating portion 16 can be prevented from being damaged by moisture, and the service life of the hot air device 56 is ensured. In addition, the spray arms spray water during the wash phase of the dishwasher 12 which may cause noise, the airflow baffle 76 closes the airflow path 74 during the wash phase of the dishwasher 12, which may effectively reduce noise during operation of the dishwasher 12.

Specifically, in the present embodiment, the airflow damper 76 is configured to be able to close the airflow passage 74 (the airflow damper 76 shown by a solid line in fig. 14) by its own weight and open the airflow passage 74 (the airflow damper 76 shown by a broken line in fig. 14) under the wind power drive of the fan.

More specifically, a fixing portion 77 is disposed on a side wall of the airflow channel 74 in the air outlet portion 60, a shaft hole 78 is opened in the fixing portion 77, a rotating shaft 80 is fixed on a side edge of the airflow baffle 76, and the rotating shaft 80 is rotatably inserted into the shaft hole 78, so that the airflow baffle 76 is rotatably disposed in the air outlet portion 60.

When the fan of the hot air device 56 is turned off, the airflow baffle 76 can close the airflow channel 74 in the air outlet portion 60 by its own weight. When the fan of the hot air device 56 is turned on, the fan discharge air can blow up the air flow baffle 76, so that the air flow baffle 76 can open the air flow channel 74 in the air outlet portion 60. The manner in which the airflow baffle 76 opens and closes the airflow passage 74 is thus simple.

The inlet 70 of the chamber 72 is generally positioned lower than the outlet 68, with more water and water vapor at the inlet 70 than at the outlet 68. Thus, when the dishwasher 12 is in the washing stage, the hot air device 56 is off (including the heater 10 and the fan off), and the airflow baffle 76 closes the airflow passage 74 in the air outlet portion 60, preventing water and water vapor from entering the heater 10 from the inlet 70 of the cavity 72.

It will be appreciated that in other embodiments, the airflow baffle 76 may be driven by a motor to open and close the airflow channel 74, for example, the shaft of the airflow baffle 76 is connected to the motor, and the motor drives the shaft to rotate to drive the airflow baffle 76 to rotate, thereby opening and closing the airflow channel 74.

In other embodiments, referring to fig. 16, an airflow baffle 76 may be positioned within the air intake 58 and downstream of the fan within the air intake 58. Alternatively, the airflow baffles 76 are disposed in the air inlet portion 58 and the air outlet portion 60, that is, the airflow baffles 76 are disposed in the air inlet portion 58 and the air outlet portion 60, so that when the hot air device 56 is turned off, the airflow channels 74 in the air inlet portion 58 and the airflow channels 74 in the air outlet portion 60 are respectively closed by the two airflow baffles 76, thereby further improving the moisture resistance of the heater 10.

In some embodiments, the air channel 46 formed by the heat dissipation plate 40 may be part of the air flow passage 74.

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

In the dishwasher 12, the heating portion 16 is supported by the protrusion structure 18 in the housing 14, so that the contact area between the heating portion 16 and the housing 14 can be reduced, and further, the heat transfer from the heating portion 16 to the housing 14 and external objects can be reduced, thereby preventing a user from being burned when using the dishwasher 12. Meanwhile, the heat dissipation plate 40 is formed with the air duct 46, so that the air flow entering the heater 10 can be heated quickly, and the heating efficiency of the air flow 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 spaced fasteners 84 are disposed on an outer side of the air inlet portion 58, a fastening hole (not shown) is disposed on the right side plate 82 of the cavity 72, and the hot air device 56 is mounted on an outer surface of the right side plate 82 through the fasteners 84 and the fastening hole. It is understood 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 means of screws or welding.

In the description herein, references to the description of the terms "one embodiment," "certain embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and not to be construed as limiting the present invention, and those skilled in the art can make changes, modifications, substitutions and alterations to the above embodiments within the scope of the present invention.

Claims

1. A dish washing machine is characterized by comprising a cavity and a hot air device, wherein the hot air device is arranged on the outer surface of a side plate of the cavity;

2. The dishwasher of claim 1, wherein a fan is disposed in the air inlet portion, the fan is disposed near the air inlet, and the air inlet is connected to the outlet of the chamber;

3. The dishwasher of claim 1, wherein a plurality of spaced arc-shaped guide plates are further disposed in the air outlet portion, one end of each arc-shaped guide plate is connected to the air outlet, and the arc-shaped guide plates smoothly guide the airflow from the upstream of the air outlet portion into the cavity.

4. The dishwasher of claim 1, wherein the heater comprises a housing and a heating part in the housing, the heating part comprises a heat radiating plate and a heating part, the heat radiating plate is connected with the heating part, the heat radiating plate is formed with an air duct, and the air duct is a part of the air flow passage.

5. The dishwasher of claim 4, wherein the heat radiating plate comprises a serpentine-shaped heat radiating fin formed with the air passage.

6. The dishwasher of claim 4, wherein a plurality of radiating fins are formed at one side of the radiating plate to be spaced apart from and parallel to each other, and an air passage is formed between the plurality of radiating fins.

7. The dishwasher of claim 6, wherein the heat radiating plate comprises a base plate, the plurality of heat radiating fins are arranged in parallel on the same side of the base plate, and the heating member is connected to the other side of the base plate.

8. The dishwasher of claim 4, wherein the heating element is disposed in the heat radiating plate, a plurality of heat radiating fins are formed on opposite sides of the heat radiating plate in parallel and spaced apart from each other, and the air duct is formed between the plurality of heat radiating fins.

9. The dishwasher of claim 8, wherein the heat radiating plate comprises a first substrate and a second substrate spaced apart from each other, a plurality of the heat radiating fins are disposed in parallel on a first side of the first substrate, a plurality of the heat radiating fins are disposed in parallel on a second side of the second substrate, the first side and the second side being opposite sides of the heat radiating plate, and the heating member is held by the first substrate and the second substrate.

10. A dishwasher according to claim 4, wherein the heating element is a PTC thermistor.

11. The dishwasher of claim 4, wherein the heat dissipation plate comprises a frame and a plurality of heat dissipation fins, the plurality of heat dissipation fins are arranged in the frame, the air channel is formed between the plurality of heat dissipation fins, the air flow enters the air channel from one side of the heater, and after exchanging heat with the heat dissipation fins in the air channel, the air flow is output from the other side of the heater.