WO2022161322A1

WO2022161322A1 - Hot air device for dish-washing machine and dish-washing machine

Info

Publication number: WO2022161322A1
Application number: PCT/CN2022/073556
Authority: WO
Inventors: 辛载奎; 韩冰; 苏春会; 仇灿华; 杨敬威; 何杰辉; 黄华明
Original assignee: 佛山市顺德区美的洗涤电器制造有限公司
Priority date: 2021-02-01
Filing date: 2022-01-24
Publication date: 2022-08-04

Abstract

A hot air device (1) for a dish-washing machine (100) and a dish-washing machine (100). The hot air device (1) comprises: a shell (11), a fan assembly (14) and a heating assembly (15), wherein an air channel (12) and a heat insulation channel (13) are formed in the shell (11), the air channel (12) is provided with a first inlet (121) and a first outlet (122), the heat insulation channel (13) is provided with a second inlet (131) and a second outlet (132), and the heat insulation channel (13) is arranged on the side wall of at least one side of the air channel (12); the fan assembly (14) is used for driving an airflow to flow from the first inlet (121) to the first outlet (122) and driving an airflow to flow from the second inlet (131) to the second outlet (132); and the heating assembly (15) is arranged in the air channel (12).

Description

Dishwasher hot air unit and dishwasher

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the priority of the application date of February 1, 2021, the application number of 202110138099.1, the patent application title of "Hot Air Device and Dishwasher", the application date of February 01, 2021, the application number of 202120296298.0, the patent application The priority of the application titled "Hot Air Device and Dishwasher", the application date is February 1, 2021, the application number is 202110139598.2, and the priority of the patent application titled "Hot Air Device and Dishwasher", the application date is 2021 On February 1, 2021, the application number is 202120290135.1, and the priority of the patent application title is "Hot Air Device and Dishwasher", and the application date is February 1, 2021. The application number is 202120296492.9, and the patent application name is "Hot Air Device". and dishwasher" priority.

technical field

The present application relates to the technical field of household appliances, and in particular, to a heating device for a dishwasher and a dishwasher.

Background technique

When the dishwasher is in the drying stage, the hot air device blows hot air into the dishwasher cavity to speed up the drying of the dishes. In the related art, most of the shell of the hot air device is one-layered. When the temperature in the air duct is high, the temperature of the shell of the hot air device will also increase, which reduces the service life of the shell. In addition, in order to improve the drying efficiency or storage performance of the dishwasher, the method of increasing the power of the heating device is usually selected to achieve this. However, it is difficult to realize the safety risk due to the high temperature of the casing.

SUMMARY OF THE INVENTION

The present application aims to solve one of the technical problems in the related art at least to a certain extent. Therefore, an object of the present application is to provide a hot air device for a dishwasher, the hot air device has an insulating channel, which is used to block the high temperature generated by the heating component to the shell of the hot air device, so as to improve the service life and safety of the hot air device. .

The second object of the present application is to provide a dishwasher. By applying the above hot air device, during the drying process of the dishwasher, the heat insulation channel of the hot air device blocks the high temperature generated by the heating component, so as to improve the hot air device of the dishwasher. service life and safety.

The hot air device for a dishwasher according to the present application includes: a casing, a fan assembly, and a heating assembly, an air duct and a heat insulation passage are formed in the casing, the air duct has a first inlet and a first outlet, and the insulation The hot channel has a second inlet and a second outlet, the thermal insulation channel is provided around the outside of the air channel, and the thermal insulation channel and the air channel extend in the same direction, and the fan assembly is used to drive airflow from the air channel. The first inlet flows to the first outlet and is used to drive airflow from the second inlet to the second outlet, and the heating assembly is placed in the air duct.

According to a hot air device for a dishwasher according to the present application, the hot air device has a casing, an air duct having a first inlet and a first outlet and an insulating passage having a second inlet and a second outlet are formed in the casing, and the fan assembly is used for The air flow in the air duct and the heat insulation channel is driven, and the heating element is placed in the air duct to heat the air flow. service life and safety.

In some embodiments, the second inlet communicates with the air duct, the second inlet is located downstream of the first inlet, and the fan assembly is in communication with the first inlet.

Optionally, a guide structure is provided on the side wall of the air duct, and the guide structure is configured to guide the airflow in the air duct to the second inlet.

In some embodiments, the second inlet is provided on the side wall of the air duct, the guide structure is configured in the shape of an air deflector connected to the inner edge of the second inlet, and the guide structure faces The air duct extends obliquely in and toward the first inlet.

In some embodiments, the second inlet is provided on the side wall of the air duct, and the second inlet is opposite to the heating element, and there is a gap between the heating element and the side wall of the air duct , the guide structure is configured in the shape of a wind guide bump, the wind guide bump is arranged on the side wall of the heating component, and the wind guide bump is opposite to the second inlet, the guide The wind bump has a guide slope adapted to guide the airflow towards the second inlet.

In some embodiments, the second inlet of the thermal insulation channel communicates with the air duct, and the second inlet is located upstream of the heating assembly or connected to the heating element in the airflow direction in the air duct. Components are relative.

Optionally, the casing is provided with a wire hole, the wire harness connecting the heating assembly is drawn out from the wire hole, the second inlet of the heat insulation channel is communicated with the air duct, and is The second inlet is located downstream of the wire passage hole in the airflow direction in the air duct.

In some embodiments, the first outlet and the second outlet are flush and oriented in the same direction.

In some embodiments, the side wall of the housing is a double-layer structure, and the heat-insulating channel is formed in the double-layer structure.

In some embodiments, a thermal barrier layer is provided in the air duct, a thermal barrier air duct is formed in the thermal barrier layer, the heating element is arranged in the thermal barrier air duct, and the thermal barrier layer and the housing are connected to each other. There are gaps in between.

In some embodiments, the thermal barrier layer includes a first cover body and a second cover body, the first cover body and the second cover body are fastened to each other to form the thermal barrier air duct, and the first cover One of the body and the second cover body is provided with a fixing device for positioning the heating assembly.

In some embodiments, the inner surface of the housing is provided with raised structures that support the thermal barrier layer to space the outer surface of the thermal barrier layer from the inner surface of the housing.

In some embodiments, a detection channel is formed in the casing, the air duct has a first ventilation port and a second ventilation port, the detection channel has a third ventilation port and a fourth ventilation port, and the fan assembly is further used for driving the airflow in the detection channel;

The hot air device further includes a humidity detection member configured to detect the humidity of the airflow in the detection channel.

In some embodiments, the housing includes a first side wall and a second side wall, the detection channel is formed between the first side wall and the second side wall, and the air channel and the detection channel are They are respectively located on opposite sides of the first side wall, an installation groove is provided on the second side wall, the installation groove is communicated with the detection channel, and the humidity detection piece is installed in the installation groove.

In some embodiments, a wire hole is provided on the bottom wall of the installation slot, and the wire harness connected to the humidity detection element is drawn out from the wire hole.

In some embodiments, a sheath is provided in the installation groove, the sheath wraps the humidity detection element, the sheath is sealed with the humidity detection element, and the probe of the humidity detection element protrudes into the place. in the detection channel.

In some embodiments, the detection channel is L-shaped, the first side wall includes a first branch and a second branch, and the first branch and the second branch are connected in an L-shape. Optionally, a reinforcing rib is provided at the connection between the first branch portion and the second branch portion, the reinforcing rib is respectively connected with the first branch portion and the second branch portion, and the installation groove is connected with the reinforcing rib. The muscles are right.

In some embodiments, the third vent is located upstream of the heating assembly with respect to the direction of airflow in the air duct from the first vent to the second vent.

In some embodiments, the fan assembly has an air outlet, and both the third air outlet of the detection channel and the first air outlet of the air duct are directly opposite to the air outlet. Optionally, the third vent is in a flared shape.

In some embodiments, the outer casing is provided with a guide rib, and the guide rib is directly opposite to the fourth ventilation opening.

In some embodiments, the housing includes: a first part, the fan is arranged in the first part; a second part, one end of the second part communicates with the first part, and the second part has the an air duct and the detection channel; a third part, the third part is connected to the other end of the second part, the space of the third part is connected to the second vent and the fourth vent, the first There are hot air outlets on the three parts. In some embodiments, the first vent and the first inlet are the same tuyere; and/or, the second vent and the first outlet are the same tuyere.

In some embodiments, the hot air device further includes: an air duct housing, the air duct housing has the air duct, an air inlet, and an air outlet, and the air duct extends from the air inlet to the air outlet; humidity A sensor, the humidity sensor is mounted on the air duct housing, and the humidity sensor is configured to detect humidity in the air duct. Optionally, the humidity sensor is arranged adjacent to the air outlet.

In some embodiments, the hot air device further includes: a sheath, the sheath wraps at least a part of the humidity sensor, and the sheath cooperates with the air duct shell to form a connection between the detection end of the temperature sensor and the humidity sensor. The outer space of the air duct shell is separated by a sealing structure.

In some embodiments, the air duct housing further has a detection space, the detection space is communicated with the air duct, and the detection end of the humidity sensor is located in the detection space, and the hot air device further includes a sheath, The sheath wraps at least a part of the humidity sensor, and the sheath cooperates with the air duct shell to form a sealing structure separating the detection space and the outer space of the air duct shell.

In some embodiments, the air duct housing includes a housing main body and an outer housing, the housing main body is the outer housing, the air duct is formed in the housing main body, the detection space is formed in the outer housing, and the The outer casing is arranged on the outer side of the casing main body, the outer casing is connected with the casing main body, and the casing main body is provided with a detection port connecting the air duct and the detection space.

In some embodiments, the air inlet and the first inlet are the same tuyere; and/or, the air outlet and the first outlet are the same tuyere.

The dishwasher according to the present application includes: a body and a hot air device, wherein the body has a washing cavity; the hot air device is placed on the body, the hot air device is the aforementioned hot air device, and the outlet of the hot air device communicate with the washing chamber.

Description of drawings

FIG. 1 is a schematic diagram of a hot air device in the first embodiment of the present application.

FIG. 2 is a schematic diagram of the hot air device in the first embodiment of the present application.

FIG. 3 is a partial enlarged view of the part circled A in FIG. 1 .

FIG. 4 is a partial enlarged view of another embodiment of the part of the circle A in FIG. 1 .

FIG. 5 is a top view of the hot air device in the second embodiment of the present application.

FIG. 6 is a top view of the hot air device in the second embodiment of the present application (the detection part is not shown).

FIG. 7 is a cross-sectional view of the detection channel of the hot air device in the second embodiment of the present application.

FIG. 8 is a partial schematic view of the hot air device in the second embodiment of the present application (showing the detection channel).

FIG. 9 is a top view of a hot air device in a third embodiment of the present application (a humidity sensor detects external humidity).

FIG. 10 is a top view of the hot air device in the third embodiment of the present application (the humidity sensor detects the internal humidity).

FIG. 11 is a top view of the hot air device in the third embodiment of the present application (showing the assembly structure of the humidity sensor).

12 is a cross-sectional view of a hot air device of a dishwasher in a third embodiment of the present application.

13 is an assembly diagram of a humidity sensor and a sheath of a hot air device of a dishwasher in a third embodiment of the present application.

FIG. 14 is a side view of the jacket structure of the hot air device of the dishwasher in the third embodiment of the present application.

15 is a side view of the structure of the humidity sensor of the hot air device of the dishwasher in the third embodiment of the present application.

16 is a side view of the structure of the heating element of the hot air device of the dishwasher in the third embodiment of the present application.

FIG. 17 is a schematic structural diagram of a dishwasher in an embodiment of the present application.

Detailed ways

The following describes in detail the embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to be used to explain the present application, but should not be construed as a limitation to the present application.

The hot air device 1 of the dishwasher 100 according to the first embodiment of the present application will be described below with reference to FIGS. 1 to 4 .

As shown in FIGS. 1-2 , the present embodiment provides a hot air device 1 of a dishwasher 100 , including: a casing 11 , a fan assembly 14 , and a heating assembly 15 .

The casing 11 can form an air duct 12, providing a place for gas flow; the casing 11 is also used to form a heat insulation channel 13, which is arranged around the air duct 12 and provides a place for low temperature gas to flow. The fan assembly 14 is used to drive the air flow from the inlet to the outlet of the air duct 12 , and the fan assembly 14 is also used to drive the air flow from the inlet to the outlet of the thermal insulation channel 13 . The heating element 15 is placed in the air duct 12 , and the heating element 15 is used to heat the airflow in the air duct 12 , so that the airflow passes through the heating element 15 and becomes a high-temperature airflow.

Specifically, an air duct 12 may be formed in the housing 11, and the air duct 12 may have a first inlet 121 and a first outlet 122, and the first inlet 121 and the first outlet 122 are used to form an airflow channel. A heat insulating channel 13 may also be formed in the housing 11 , the heat insulating channel 13 may be disposed around the outside of the air duct 12 , and the heat insulating channel 13 may have a second inlet 131 and a second outlet 132 . The heating assembly 15 can be placed in the air duct 12, and the fan assembly 14 can be used to drive the air flow from the first inlet 121 to the first outlet 122. In addition, the fan assembly 14 can also be used to drive the air flow from the second inlet 131 to the second outlet. 132. That is to say, two airflow channels are formed inside the housing 11 , wherein, the heat insulating channel 13 is provided on the outer periphery of the air channel 12 to prevent the temperature of the housing 11 from being too high. The fan assembly 14 can deliver airflow to the air duct 12 and the thermal insulation channel 13 at the same time. The airflow enters the first inlet 121 and is heated by the heating component 15 in the air duct 12 to become high-temperature gas, and the airflow enters the thermal insulation channel from the second inlet 131. 13. Directly along the air flow channel, it is discharged from the second outlet 132.

After the fan assembly 14 is started, a part of the air flow generated by the fan assembly 14 enters the air duct 12 from the first inlet 121, and flows through the heating assembly 15 in the air duct 12. The air is heated by the heating assembly 15 and becomes a high-temperature air flow, It is discharged from the first outlet 122 ; another part of the airflow enters the thermal insulation channel 13 from the second inlet 131 and is discharged from the second outlet 132 . Since the thermal insulation channel 13 is arranged around the air duct 12, the airflow in the thermal insulation channel 13 cannot be directly heated by the heating element 15 placed in the air duct 12. Therefore, the thermal insulation channel 13 transmits a lower temperature airflow. The low-temperature gas can form a protection on the outside of the air duct 12, and the heat of the airflow in the air duct 12 cannot be directly dissipated to the outside of the casing 11, which reduces the heat loss in the air duct 12, and can block the high temperature generated by the heating assembly 15, thereby improving the hot air device. 1. Service life and safety.

According to the hot air device 1 of the dishwasher 100 according to the embodiment of the present application, an insulating channel 13 is provided on the side wall of the air duct 12 , and the airflow in the air duct 12 can be insulated by the insulating channel 13 to reduce or avoid the The heat in the air duct 12 is directly dissipated to the outside of the casing 11, so that the energy utilization rate of the hot air device can be effectively improved.

Specifically, a part of the air flow generated by the fan assembly 14 enters the air duct 12. Since the heating assembly 15 is arranged in the air duct 12, the air entering the air duct 12 will exchange heat with the heating assembly 15. Then it flows to the first outlet 122 , that is to say, the airflow flows through the heating element 15 in the air duct 12 , and the airflow is heated by the heating element 15 to become a high-temperature airflow, which is discharged from the first outlet 122 ; another part of the airflow enters from the second inlet 131 . In the thermal insulation channel 13, since the thermal insulation channel 13 is provided around the outside of the air duct 12, the airflow in the thermal insulation channel 13 is separated from the air duct 12, so the heating element 15 cannot directly heat the airflow in the thermal insulation channel 13. , in other words, the heating assembly 15 is separated from the thermal insulation channel 13 . The airflow in the thermal insulation channel 13 cannot be directly heated by the heating element 15 placed in the air channel 12 . Therefore, the lower temperature air flow transmitted through the heat insulation channel 13 forms a barrier, and it is difficult for the heat in the air channel 12 to directly exchange heat with the external environment of the hot air device 1, which effectively reduces the heat exchange efficiency and improves the energy utilization rate. The temperature of the airflow in the thermal insulation channel 13 is lower, and the heat exchange rate between the airflow in the thermal insulation channel 13 and the external environment can also be reduced.

In addition, since the heat insulating air duct 13 is provided, the heat in the air duct 12 can be prevented from being directly dissipated to the outside of the casing 11 , thereby reducing the temperature of the outer surface of the casing 11 and reducing the influence on other components outside the casing 11 . Moreover, since the temperature of the airflow in the insulating air duct 13 is relatively low, most of the heat in the air duct 12 will be absorbed by the airflow in the insulating air duct 13 during the process of outward dissipation, thereby reducing heat loss. Improve energy efficiency.

Optionally, the fan assembly 14 may be configured to be connected to the first inlet 121 and the second inlet 131 at the same time, and the fan assembly 14 delivers airflow to the air duct 12 and the heat insulation channel 13 at the same time. In addition, the fan assembly 14 can also be composed of multiple fans, one fan is connected to the air duct 12 to drive the airflow in the air duct 12 , and one fan is connected to the thermal insulation channel 13 to drive the airflow in the thermal insulation channel 13 . In addition, the fan separately provided for the heat insulation channel 13 can be a fan for introducing cold air.

In addition, the heat insulating channel 13 may be provided on both sides of the air duct 12 , or the heat insulating channel 13 may be provided only on one side wall of the air duct 12 .

Optionally, the second inlet 131 of the thermal insulation channel 13 is communicated with the air duct 12, and the second inlet 131 may be located downstream of the first inlet 121. In this way, the fan assembly 14 can only be connected to the first inlet 121, which simplifies the The structure of the hot air device 1 . Therefore, the fan assembly 14 can be connected to the first inlet 121, thereby simplifying the structure.

In addition, when the airflow reaches the second inlet 131 , a part of the airflow enters the thermal insulation channel 13 , and a part of the airflow enters the air duct 12 . The second inlet 131 is located upstream of the heating assembly 15 in the air flow direction in the air duct 12 , that is, after the air enters the air duct 12 , the air enters the thermal insulation through the second inlet 131 before passing through the heating assembly 15 . Inside the air duct 13. Since the airflow passes through the heating element 15 and becomes a high-temperature airflow, the second inlet 131 is arranged upstream of the heating element 15 to ensure that the fluid entering the thermal insulation channel 13 is a low-temperature airflow.

In addition, it can also be arranged that the second inlet 131 is opposite to the heating assembly 15 in the direction of the air flow in the air duct 12 , that is, after the air enters the air duct 12 , the air will pass through the second inlet 131 when passing through the heating assembly 15 . The inlet 131 enters into the insulating air duct 13 . Since the airflow will become a high-temperature airflow after passing through the heating assembly 15, the second inlet 131 is arranged opposite to the heating assembly 15, and the airflow entering the insulating air duct 13 is not heated through the entire heating assembly 15, so as to ensure that it enters the insulating duct The fluid in 13 is a low-temperature airflow relative to the airflow in the air duct 12 .

Optionally, the second inlet 131 of the thermal insulation channel 13 is in direct communication with the first inlet 121 of the air duct 12 . It is convenient for the airflow to enter the airflow channel respectively, the structure is simple, and the production and installation are easy. When the same fan is used to drive the air flow, the fan assembly 14 can send the air flow into the air duct 12 and the heat insulation passage 13 through the first inlet 121 and the second inlet 131 at the same time, which improves the heat insulation effect and simplifies the operation of the hot air device 1 . structure.

The hot air device 1 of the embodiment of the present application can utilize the airflow generated by the same fan to achieve the effect of producing high temperature airflow and low temperature airflow respectively when the airflow is discharged from the first outlet 122 and the second outlet 132, thereby saving energy. Of course, the second inlet 131 and the air duct 12 can also be set in a form of disconnection, or in a form in which the fan assembly 14 supplies air respectively.

A guide structure 17 may be provided on the side wall of the air duct 12, and the guide structure 17 is configured to guide the air flow in the air duct 12 to the second inlet 131 of the heat insulation channel 13 located on the upper side. Therefore, the structure of the hot air device 1 can be further simplified, and after the structure is simplified, it is still possible to ensure that the air flow stably leads to the heat insulation channel 13 , thereby improving the performance of the hot air device 1 .

In addition, when the heat insulation channel 13 is provided on the side of the housing 11 with the wire passage hole 16 , the second inlet 131 of the heat insulation passage 13 can be arranged downstream of the wire passage hole 16 , so as to provide a space for the wire passage hole 16 . At this time, the second inlet 131 cannot face the fan assembly 14, and most of the air flow passes through the heating assembly 15 to become a high-temperature air flow, and the air flow through the gap between the heating assembly 15 and the wire passage hole 16 is less, therefore, it can be A guide structure 17 is provided upstream adjacent to the second inlet 131 to guide the air flow that has not passed through the heating assembly 15 to the second inlet 131 to enter the thermal insulation channel 13 . Wherein, the guide structure 17 can be arranged upstream of the second inlet 131 as a triangular bump with a certain inclination angle, or can be arranged as a section of the guide structure 17 extending from the second inlet 131, for example, the second inlet One end of the 131 close to the heating element 15 is set in a flared shape, so that the airflow can enter the second inlet 131 .

Wherein, the guide structure 17 in the present application may have different forms, and FIG. 3 and FIG. 4 show two different guide structures 17 . For example, in a specific example of the present application, as shown in FIG. 4 , the second inlet 131 may be provided on the side wall of the air duct 12 , the guide structure 17 may be configured in the shape of an air guide plate, and the guide structure 17 may be connected with the first The inner sides of the two inlets 131 are connected together, and the guide structure 17 can be in an inclined shape extending toward the inside of the air duct 12 and toward the first inlet 121 , so that when the airflow passes through the guide structure 17 , the guide structure 17 can smoothly guide the airflow toward the partition. Guide the hot channel 13 to improve the stability of air supply into the heat insulation channel 13 .

In addition, in another example of the present application, as shown in FIG. 3 , the second inlet 131 is provided on the side wall of the air duct 12 , and the second inlet 131 is opposite to the heating element 15 . There is a gap between the side walls, the guide structure 17 is configured in the shape of an air guide bump, the air guide bump is arranged on the side wall of the heating element 15, and the wind guide bump is opposite to the second inlet 131, and the wind guide bump is opposite to the second inlet 131. There is a guide slope adapted to guide the airflow towards the second inlet 131 .

Of course, the guiding structure 17 in this application may also have other forms, which will not be described in detail in this application.

In addition, the side wall of the casing 11 in the present application can be set as a double-layer structure, and the heat insulation channel 13 can be constructed in the double-layer structure, so that the structure of the casing 11 can be further simplified.

As shown in FIG. 1 , optionally, a wire hole 16 is provided on the casing 11 , and the wire harness connected to the heating element 15 is drawn out from the wire hole 16 . When the heat insulation channel 13 is disposed on the side of the casing 11 where the wire passage hole 16 is provided, the air flow enters from the first inlet 121 , a part of the air flow passes through the heating assembly 15 , and a part of the air flow passes through the space between the heating assembly 15 and the wire passage hole 16 . gap. The second inlet 131 of the thermal insulation channel 13 is located downstream of the wire passage hole 16 in the airflow direction in the air passage 12 , and the second inlet 131 of the thermal insulation passage 13 is communicated with the air passage 12 , so that the heating element 15 is connected to the wire passage hole 16 . When the air passing through the air reaches the second inlet 131, the air flow can enter the heat insulation channel 13, which solves the obstruction of the air inlet of the heat insulation channel 13 caused by the wire hole 16, thereby reducing the high temperature generated by the heating assembly 15 to the casing 11 during operation, and at the same time. The risk of fire caused by the overheating of the wire passage hole 16 is avoided, and the safety of the hot air device 1 is improved.

As shown in FIGS. 1-5 , optionally, both side walls of the air duct 12 may be provided with thermal insulation channels 13 , wherein the second inlets 131 of the thermal insulation channels 13 on the two side walls of the air duct 12 The first inlet 121 of the air duct 12 is directly opposite to the fan assembly 14 , and the fluid generated by the fan assembly 14 can be directly split at the first inlet 121 and the second inlet 131 .

In addition, when the two side walls of the air duct 12 are provided with the heat-insulating passages 13, the second inlets 131 of the heat-insulating passages 13 on both sides of the air passage 12 can also be arranged at different positions, that is, the air One of the thermal insulation channels 13 on both sides of the duct 12 (refer to the thermal insulation channel 13 on the left side of the air duct 12 in FIG. 1 ) is flush with the first inlet 121 of the air duct 12 , and the other (refer to FIG. 1 ) A heat insulation channel 13) located on the right side of the air duct 12 is opposite to the heating assembly 15 located in the air duct 12. At this time, a guide structure 17 may be provided in the air duct 12, and the guide structure 17 is configured to connect the air duct 12. The air flow inside is directed to the second inlet 131 of the insulating channel 13 located on the upper side.

In addition, when the heat insulation channel 13 is provided on the side of the casing 11 with the wire passage hole 16 , the second inlet 131 of the heat insulation channel 13 can be arranged downstream of the wire passage hole 16 , so as to provide a space for the wire passage hole 16 . At this time, the second inlet 131 cannot face the fan assembly 14, and most of the air flow passes through the heating assembly 15 to become a high-temperature air flow, and the air flow through the gap between the heating assembly 15 and the wire passage hole 16 is less, therefore, it can be A guide structure 17 is provided upstream adjacent to the second inlet 131 to guide the air flow that has not passed through the heating assembly 15 to the second inlet 131 to enter the thermal insulation channel 13 . Wherein, the guide structure 17 can be arranged upstream of the second inlet 131 as a triangular bump with a certain inclination angle, or can be arranged as a section of the guide structure 17 extending from the second inlet 131, for example, the second inlet One end of the 131 close to the heating element 15 is set in a flared shape, so that the airflow can enter the second inlet 131 .

Optionally, the first outlet 122 is flush with the second outlet 132 and faces the same direction, which increases the area of the air outlet. The instantaneous air volume of the hot air device 1 is large, and the air flow from the first outlet 122 and the second outlet 132 can be It directly enters the hot air outlet 21 to dry the dishes in the dishwasher 100 , thereby improving the drying efficiency of the dishwasher 100 .

In addition, the housing 11 is also provided with a hot air outlet 21, and the air entering the hot air device 1 will be sent out through the hot air outlet 21, wherein, in the air flow direction, the hot air outlet 21 is located downstream of the first outlet 122 and the second outlet 132. When the first outlet 122 and the second outlet 132 are flush, the airflow of the heat insulation channel 13 and the airflow of the air duct 12 can be mixed before entering the hot air outlet 21, so as to avoid uneven temperature of the air entering through the hot air outlet 21. , to improve the uniformity of the air flow sent out through the hot air outlet 21 and save materials. Further, in order to improve the airflow mixing between the thermal insulation channel 13 and the air duct 12 , a constriction form with a gradually reduced size may be provided at the hot air outlet 21 , thereby promoting the airflow mixing of the thermal insulation channel 13 and the air duct 12 .

As shown in FIG. 17 , the dishwasher 100 according to the present application includes: a body 2 and the hot air device 1 of the above-mentioned embodiment, and the body 2 has a washing cavity 3 for washing dishes. The hot air device 1 is placed on the body 2 to generate hot air. The hot air outlet 21 of the hot air device 1 is connected to the washing chamber 3 to dry the dishes. During the drying process of the dishwasher 100, the heating element 15 of the hot air device 1 generates high-temperature gas, and the heat insulation channel 13 blocks the high temperature generated by the heating element 15, so as to avoid damage caused by the high temperature of the outer shell 11 of the hot air device 1, or cause a fire risk , so as to improve the service life and safety of the hot air device 1 of the dishwasher 100 .

As shown in FIGS. 1 and 2 , the hot air device 1 includes: a casing 11 , a fan assembly 14 , and a heating assembly 15 . An air duct 12 can be formed in the casing 11 , the wall of the casing 11 is configured as a double-layer structure, and an insulating channel 13 is formed in the double-layer structure, and an air duct 12 is formed in the casing 11 . The air duct 12 may have a first inlet 121 and a first outlet 122 , the first inlet 121 and the first outlet 122 are used to form an airflow channel, and the first inlet 121 is connected to the fan assembly 14 . The second inlet 131 is connected to the first inlet 121, and part of the airflow entering the housing 11 through the first inlet 121 will enter the air duct 12, and then flow to the first outlet 122 through the air duct 12, and pass through the first outlet 122. Another part of the airflow entering the housing 11 through the first inlet 121 will enter the thermal insulation channel 13 through the second inlet 131 . The heat insulation channel 13 may be provided around the outside of the air duct 12 . The heating assembly 15 can be placed in the air duct 12 , that is, two airflow channels are formed inside the casing 11 , wherein the heat insulating passage 13 is provided on the outer periphery of the air duct 12 to prevent the casing 11 from being overheated. The fan assembly 14 can deliver airflow to the air duct 12 and the thermal insulation channel 13 at the same time. The airflow enters the first inlet 121 and is heated by the heating component 15 in the air duct 12 to become high-temperature gas, and the airflow enters the thermal insulation channel from the second inlet 131. 13. Directly along the air flow channel, it is discharged from the second outlet 132. Therefore, the insulated channel 13 transmits the lower temperature air flow. The low-temperature gas can form a protection on the outside of the air duct 12, and the heat of the airflow in the air duct 12 cannot be directly dissipated to the outside of the casing 11, which reduces the heat loss in the air duct 12, and can block the high temperature generated by the heating assembly 15, thereby improving the hot air device. 1. Service life and safety.

Among them, since the heating assembly 15 is provided in the air duct 12, when the heating assembly 15 has a wire harness for power supply, communication, etc., a wire harness guiding structure needs to be provided, and the wire harness guiding structure needs to pass through the casing 11 for connecting the controller and the like. , therefore, the wire harness guide structure may have an impact on the heat insulation channel 13. Therefore, in this application, the second inlet 131 of the heat insulation channel 13 is arranged upstream of the heating assembly 15. However, where the wire harness guide structure is located, it is necessary to The part where the second inlet 131 is located is arranged downstream of the wire harness guide structure to avoid the insulation channel 13 being cut off by the wire harness guide structure, that is, a part of the second inlet 131 in the present application is arranged upstream of the heating assembly 15 , and the other part is arranged downstream of the wire harness guide structure (or downstream of the wire hole, or opposite to the heating element) and the like. As shown in FIG. 1 , the portion of the second inlet 132 upstream of the heating assembly 15 may be directly opposite the fan assembly 14 , that is, the portion of the first inlet 121 upstream of the heating assembly 15 is consistent with the airflow direction, but, The part located downstream of the guide structure 17 has an included angle (for example, perpendicular to each other) with the flow direction of the air flow. Therefore, the guide structure 17 needs to be provided to guide the air flow so that the air flow can enter the heat insulation channel 13 more easily. Therefore, , a guide structure 17 may be provided in the air duct 12, on the heating assembly 15 or at other positions to guide the airflow.

Therefore, a part of the air flow generated by the fan assembly 14 enters the air duct 12. Since the heating assembly 15 is provided in the air duct 12, the air entering the air duct 12 will exchange heat with the heating assembly and flow to the first An outlet 122, that is to say, the airflow flows through the heating element 15 in the air duct 12, and the airflow is heated by the heating element 15 to become a high-temperature airflow, which is discharged from the first outlet 122; another part of the airflow enters the heat insulation through the second inlet 131. In the channel 13, since the heat insulation channel 13 is arranged around the outside of the air duct 12, the air flow in the heat insulation channel 13 is separated from the air duct 12, so the heating element 15 cannot directly heat the air flow in the heat insulation channel 13, in other words, The heating assembly 15 is separated from the insulating channel 13 . The airflow in the thermal insulation channel 13 cannot be directly heated by the heating element 15 placed in the air channel 12 . Therefore, the lower temperature air flow transmitted through the heat insulation channel 13 forms a barrier, and it is difficult for the heat in the air channel 12 to directly exchange heat with the external environment of the hot air device 1, which effectively reduces the heat exchange efficiency and improves the energy utilization rate. The temperature of the airflow in the thermal insulation channel 13 is lower, and the heat exchange rate between the airflow in the thermal insulation channel 13 and the external environment can also be reduced.

In addition, as shown in FIG. 1 , the first outlet 122 and the second outlet 132 can be arranged to be flush with each other, so that during the air flow, the air flow sent by the first outlet 122 and the air flow sent by the second outlet 132 will Mixing, thereby reducing the impact on the airflow temperature and increasing the supply air temperature.

Optionally, the housing 11 has a first part and a second part, the first part and the second part can be perpendicular to each other, and the inner space of the first part and the inner space of the second part are connected, and the inner space of the first part and the inner space of the second part are connected. The interior space is constructed with an L-shaped air duct. A mounting plate can be provided between the first part and the second part, and the mounting plate is connected with the first part and the second part respectively, so as to improve the structural strength of the casing 11 . The heating element 15 can be provided in the first part, and one end of the first part is connected to the airflow driving device, and the airflow in the air duct 12 is driven by the airflow driving device, wherein the heating element 15 is arranged in the air duct 12 and is close to the airflow driving device. One end of the second part is connected to the first part, and the other end of the second part is connected to the third part, one end of the third part is connected to the other end of the second part, and the other end of the third part is provided with an air outlet. Wherein, the third part may include a limit ring, the limit ring is arranged around the air outlet, and a reinforcing rib is arranged on the limit ring. In addition, the arc transition at the junction of the first part and the second part.

The hot air device 1 of the dishwasher 100 according to the second embodiment of the present application will be described below with reference to FIGS. 5-8 .

As shown in FIGS. 5-8 , the present embodiment provides a hot air device 1 of a dishwasher 100 , including: a casing 11 , a fan assembly 14 , a heating assembly 15 , and a humidity detector 160 . The casing 11 is used to form the air duct 12 , which provides a place for the gas to flow, and the casing 11 is also used to form a detection channel 130 , and the detection channel 130 is used to circulate the indoor temperature gas driven by the fan assembly 14 . The fan assembly 14 is used to drive the air flow in the air duct 12 and the detection channel 130 , and the heating assembly 15 is placed in the air duct 12 to heat the air flow in the air duct 12 , so that the air passes through the heating assembly 15 and becomes a high temperature air flow. The humidity detector 160 is used to detect the humidity of the airflow in the detection channel 130 .

Specifically, an air duct 12 and a detection channel 130 are formed in the housing 11 , the air duct 12 has a first ventilation port 1210 and a second ventilation port 1220 , and the detection channel 130 has a third ventilation port 1330 and a fourth ventilation port 1340 . The fan assembly 14 is used to drive the airflow, that is, when the fan assembly 14 is working, the airflow in the air duct 12 enters and exits through the first vent 1210 and the second vent 1220; the airflow in the detection channel 130 passes through the third vent 1330 And the fourth ventilation port 1340 enters and exhausts, that is, the fan assembly 14 can provide the air duct 12 and the detection channel 130 with the power of gas circulation at the same time. The heating assembly 15 is used for heating the air flow in the air duct 12 and is placed in the air duct 12 , and the heating assembly 15 can heat the air flow in the air duct 12 . Therefore, the lower temperature gas driven by the fan assembly 14 circulates in the detection channel 130, and the gas temperature is less affected by the heating component 15 (or the airflow in the detection channel 130 is not affected by the heating component 15). The humidity detector 160 is used to detect the humidity of the airflow in the detection channel 130 .

After the fan assembly 14 works, the fan assembly 14 drives the airflow to flow from the first vent 1210 of the air duct 12 to the second vent 1220. During the circulation process, it passes through the heating assembly 15 in the air duct 12, and the airflow passing through the heating assembly 15 is heated by the heating assembly. 15 is heated into a high-temperature airflow and discharged from the second vent 1220, and the obtained high-temperature gas is used to dry the tableware in the washing chamber 3 of the dishwasher 100 to achieve a drying effect. The fan assembly 14 can also drive the airflow to flow from the third vent 1330 of the detection channel 130 to the fourth vent 1340 . During the flow, the humidity detector 160 is used to detect the humidity of the airflow in the detection channel 130 . Since the airflow does not flow through the heating assembly 15, the temperature of the airflow will not be too high, and the relative humidity of the airflow during detection by the humidity detector 160 is not affected by the temperature, thereby obtaining a more accurate detection value.

It should be noted that the fan assembly 14 can also drive the air flow from the fourth vent 1340 of the detection channel 130 to the third vent 1330, that is to say, the fan assembly 14 drives the air in the washing chamber 3 of the dishwasher 100 to the detection channel In step 130 , the humidity detection part 160 can detect the humidity of the air in the washing chamber 3 driven into the detection channel 130 . The effect of setting one humidity detecting element 160 to detect the humidity of two regions is achieved, which simplifies the structure of the hot air device 1 .

According to the hot air device 1 of the dishwasher 100 according to the embodiment of the present application, during the operation of the hot air device 1, the fan assembly 14 drives the gas to circulate in the detection channel 130, and the humidity in the detection channel 130 is detected by the humidity detection member 160, which improves the cleaning performance. The drying effect of the bowl machine 100.

In addition, since the detection channel 130 is provided, the heat in the air duct 12 can be directly dissipated to the outside of the casing 11 , thereby reducing the outer surface temperature of the casing 11 , reducing the influence on other components outside the casing 11 , and improving the service life of the casing 11 . Therefore, the detection channel 130 can not only improve the detection accuracy, but also play the role of isolating the heat of the air duct 12 and preventing the heat dissipation of the air duct 12 .

Optionally, the fan assembly 14 may be configured to drive the gas from the third vent 1330 to the fourth vent 1340 by the same fan operation and from the fourth vent 1340 by the reverse operation of the fan. For driving to the third vent 1330, the fan assembly 14 can also be configured to set another fan with an appropriate volume at the fourth vent 1340 to drive the air to flow from the fourth vent 1340 to the third vent 1330, so as to The humidity of the gas in the scrubbing chamber 3 is detected.

Optionally, the housing 11 includes a first side wall 1310 and a second side wall 1320 for forming the detection channel 130 , the air duct 12 and the detection channel 130 are respectively located on opposite sides of the first side wall 1310 , and the second side wall 1320 There is an installation groove 170 thereon, the installation groove 170 communicates with the detection channel 130 , and the humidity detection member 160 is installed in the installation groove 170 . In other words, the detection channel 130 is disposed on the outer wall of one side of the air duct 12 , and the outer wall of one side of the air duct 12 is the first side wall 1310 of the detection channel 130 . Therefore, the detection channel 130 can be formed only by adding the second side wall 1320, and the detection channel 130 is simple in structure and easy to manufacture. The second side wall 1320 is provided with an installation groove 170 for installing the humidity detection member 160, that is to say, the installation groove 170 is integrated with the second side wall 1320, so that the humidity detection member 160 can detect the humidity of the gas in the detection channel 13. Improved detection accuracy.

Of course, the mounting groove 170 and the second side wall 1320 may be formed integrally, or may be formed separately and assembled on the second side wall 1320 . The humidity detecting element 160 can be installed in the installation groove 170 by interference fit, or a magnetic attraction structure can be provided on the bottom wall of the installation groove 170 to make the humidity detecting element 160 be positioned in the installation groove 170 stably and quickly.

Optionally, a wire hole 172 is provided on the bottom wall of the installation slot 170, which is convenient for adapting to the layout of the wiring harness 162 of most humidity detection components 160. The wiring harness 162 connected to the humidity detection component 160 can be drawn out from the wiring hole 172, which is convenient for wiring harness. 162 arrangement and connection.

Optionally, a sheath 171 may also be provided in the installation groove 170 . The sheath 171 is used to wrap the humidity detector 160 , and the sheath 171 is in sealing cooperation with the humidity detector 160 , so that the installation of the humidity detector 160 can be reduced. and reduce the gap between the installation groove 170 and the humidity detector 160 to prevent airflow or humid air from entering the installation groove 170 , thereby improving the service life and installation stability of the humidity detector 160 . The probe 161 of the humidity detection part 160 extends into the detection channel 130 , so that the humidity detection part 160 can quickly and accurately detect the airflow in the detection channel 130 . The probe 161 of the humidity detection element 160 may not extend into the detection channel 130 .

As shown in FIGS. 6-8 , optionally, the detection channel 130 is L-shaped, the first side wall 1310 includes a first branch 1311 and a second branch 1312 , and the first branch 1311 and the second branch 1312 are connected in an L-shape, Facilitates airflow. Since the air duct 12 and the detection channel 130 are respectively provided on both sides of the first side wall 1310 , and the detection channel 130 is L-shaped, for the strength of the bonding surface, the first branch 1311 and the second branch 1312 of the first side wall 1310 A reinforcing rib 135 is provided at the connection of the first side wall 1310, which can increase the service life of the first side wall 1310. The reinforcing rib 135 can be connected to the first branch 1311 and the second branch 1312 respectively, the installation groove 170 is directly opposite to the reinforcing rib 135, and is arranged in parallel with the humidity detecting member 160, so that the airflow circulating in the detecting channel 130 can be affected by the humidity The detection piece 160 detects to improve the detection accuracy.

Optionally, the third vent 1330 is located upstream of the heating assembly 15 with respect to the airflow direction from the first vent 1210 to the second vent 1220 in the air duct 12 . The component 15 will enter the detection channel 130 through the third vent 1330 before. Since the airflow will become high temperature airflow after passing through the heating element 15 , the third ventilation port 1330 is disposed upstream of the heating element 15 to ensure that the airflow entering the detection channel 130 is normal temperature airflow.

In addition, if the airflow in the detection channel 130 is affected by the temperature, the temperature of the surface of the humidity detection member 160 will also increase, and the temperature increase will affect the operation and life of the humidity detection member 160. The humidity can only be detected after the ambient temperature is lowered, so it needs to be stationary for about 1-2 hours, which seriously affects the working efficiency of the dishwasher 100 .

Optionally, the fan assembly 14 has an air outlet, and the third air outlet 1330 of the detection channel 130 and the first air outlet 1210 of the air duct 12 are both facing the air outlet, so that the airflow generated by the fan assembly 14 can directly enter the air duct. 12 and the detection channel 130, there is no loss of energy. The third vent 1330 has a flared shape, and the flared third vent 1330 facilitates the entry of external air into the detection channel 130 , ensures the amount of airflow in the channel, and provides the humidity detector 160 with a sufficient detection environment for gas samples.

Optionally, the casing 11 is provided with a guide rib 180, and the guide rib 180 is directly opposite to the fourth ventilation port 1340. In this way, the guide rib 180 prevents water from splashing into the detection channel when the dishwasher 100 is running. The contamination of the detection channel 130 caused by 130 may affect the detection result of the humidity detection element 160 . The guide rib 180 can also block the humid gas in the washing chamber 3 from entering the detection channel 130 during the detection process, so as to avoid affecting the detection result.

Optionally, the housing 11 includes: a first part 111 , a second part 112 and a third part 113 , the fan is arranged in the first part 111 , one end of the second part 112 communicates with the first part 111 , and the second part 112 has a fan Channel 12 and detection channel 130, the third part 113 is connected to the other end of the second part 112, the space of the third part 113 is connected to the second vent 1220 and the fourth vent 1340, and the third part 113 is provided with a hot air outlet 21. Therefore, each part of the casing has different functions respectively, and the hot air device 1 is formed through a reasonable combination. Wherein, the first part 111 , the second part 112 and the third part 113 can be connected by snaps or screws, so as to install and replace accessories.

As shown in FIG. 5 , optionally, a raised structure 20 is provided on the inner surface of the housing 11, and the raised structure 20 is used to support the heating assembly 15 to space the outer surface of the heating assembly 15 from the inner surface of the housing 11, form a certain distance. The protruding structures 20 can be arranged as long strip-shaped bumps, and there can be multiple protruding structures 20. The protruding structures 20 are located between the inner surface of the housing 11 and the heating element 15, so as to prevent the heating element 15 from being overheated and damaging the housing 11. In addition, the protruding structure 20 and the inner surface of the housing 11 may be provided as a double-sided support, or a single-sided support.

As shown in FIG. 17 , the dishwasher 100 according to the present application includes: a body 2 and the hot air device 1 of the above-mentioned embodiment, and the body 2 has a washing cavity 3 for washing dishes. The hot air device 1 is placed on the body 2 to generate hot air. The hot air outlet 21 of the hot air device 1 is connected to the washing chamber 3 to dry the dishes. During the drying process of the dishwasher 100, the humidity detector 160 of the hot air device 1 selects different drying modes by detecting the humidity in the detection channel 130, so as to improve the drying effect of the dishwasher 100.

As shown in FIG. 5 and FIG. 6 , the hot air device 1 includes: a casing 11 , a fan assembly 14 , and a heating assembly 15 . An air duct 12 may be formed in the casing 11 , the wall of the casing 11 is constructed as a double-layer structure, and a detection channel 130 is constructed in the double-layer structure, and an air passage 12 is constructed in the casing 11 . The air duct 12 may have a first ventilation port 1210 and a second ventilation port 1220 , the first ventilation port 1210 and the second ventilation port 1220 are used to form an air passage, and the first ventilation port 1210 is connected to the fan assembly 14 . The third vent 1330 is connected to the first vent 1210, and a part of the airflow entering the housing 11 through the first vent 1210 will enter the air duct 12, and then flow to the second vent 1220 through the air duct 12 , and another part of the airflow entering the housing through the first vent 1210 will enter the detection channel 130 through the third vent 1330 . In some embodiments, the detection channel 130 may be provided around the outside of the air duct 12 . The heating assembly 15 can be placed in the air duct 12 , that is, two airflow channels are formed inside the housing 11 , wherein the detection channel 130 is provided on the outer periphery of the air duct 12 to prevent the housing 11 from overheating. The fan assembly 14 can deliver airflow to the air duct 12 and the detection channel 130 at the same time. The airflow enters the first vent 1210 and is heated by the heating component 15 in the air duct 12 to become high-temperature gas, and the airflow enters the detection channel through the third vent 1330. 130, which is directly discharged from the fourth ventilation port 1340 along the airflow channel. Therefore, the detection channel 130 transmits a lower temperature airflow, so that the influence of high temperature on the humidity detection accuracy can be reduced. The high temperature generated by the heating element 15 improves the service life and safety of the hot air device 1 .

Among them, since the heating assembly 15 is arranged in the air duct, when the heating assembly 15 has a wire harness for power supply, communication, etc., a wire harness guiding structure needs to be provided, and the wire harness guiding structure needs to pass through the casing for connecting the controller, etc. Therefore, The wire harness guide structure may have an impact on the detection channel 130. Therefore, in the present application, the third ventilation port 1330 of the detection channel 130 is arranged upstream of the heating assembly 15. However, where the wire harness guide structure is located, the third ventilation port needs to be installed. The portion of the 1330 located there is disposed downstream of the wire harness guide structure to avoid the detection channel 130 being cut off by the wire harness guide structure, that is, a part of the third vent 1330 in the present application is disposed upstream of the heating assembly 15, while another portion is disposed upstream of the heating assembly 15. A part is disposed downstream of the wire harness guide structure (or opposite to the heating element 15 ) and the like. As shown in FIG. 5 , the portion of the third vent 1330 upstream of the heating assembly 15 may be directly opposite the fan assembly 14 , that is, the portion of the first vent 1210 upstream of the heating assembly 15 is consistent with the airflow direction, However, there is an included angle between the part located downstream of the guide structure and the flow direction of the airflow (for example, perpendicular to each other), therefore, a guide structure needs to be provided to guide the airflow so that the airflow can enter the detection channel 130 more easily. Therefore, A guide structure may be provided in the air duct 12, on the heating assembly 15 or at other positions to guide the airflow. Of course, in the present application, the detection channel 130 may also be provided on the side of the housing 11 where the wire harness guiding structure is not provided, so as to avoid the influence of the wire harness guiding structure on the detection channel 130 .

Therefore, a part of the air flow generated by the fan assembly 14 enters the air duct 12. Since the heating assembly 15 is arranged in the air duct 12, the air entering the air duct 12 will exchange heat with the heating assembly 15 and flow to the direction The second vent, that is to say, the airflow flows through the heating element 15 in the air duct 12, the airflow is heated by the heating element 15 to become a high-temperature airflow, and is discharged from the second vent 1220; another part of the airflow enters from the third vent 1330 In the detection channel 130, since the detection channel 130 is arranged around the outside of the air duct 12, the airflow in the detection channel 130 is separated from the air duct 12, therefore, the heating element 15 cannot directly heat the airflow in the detection channel 130, in other words, the heating element Separated from the detection channel 130 . The airflow in the detection channel 130 cannot be directly heated by the heating element 15 placed in the air channel 12 . Therefore, the lower temperature airflow transmitted through the detection channel 130 forms a barrier, and it is difficult for the heat in the air channel 12 to directly exchange heat with the external environment of the hot air device 1, which effectively reduces the heat exchange efficiency and improves the energy utilization rate. The temperature of the airflow in the channel 130 is lower, which can also reduce the heat exchange rate between the airflow in the detection channel 130 and the external environment.

In addition, as shown in FIG. 5 , the second ventilation port 1220 and the fourth ventilation port 1340 may be arranged to be flush with each other. In this way, during the air circulation process, the air flow sent by the second ventilation port 1220 and the air flow sent by the fourth ventilation port 1340 The airflow will be mixed to reduce the effect on the airflow temperature and increase the supply air temperature.

Optionally, the housing 11 has a first portion 111 configured to accommodate the fan assembly 14, a second portion 112 configured to heat the airflow, and a third portion 113 that may be provided It is configured to be connected with the inner tank or other structures of the dishwasher 100 so as to provide hot air into the dishwasher. One end of the second part 112 is connected to the first part 111 , and the other end of the second part 112 is connected to the third part 113 , one end of the third part 113 is connected to the other end of the second part 112 , and the other end of the third part 113 Air outlet is installed. Wherein, the third part 113 may include a limit ring, the limit ring is arranged around the air outlet, and the limit ring is provided with a reinforcing rib. In addition, the arc of the connection between the first portion 111 and the second portion 112 is excessive.

In addition, the second part 112 of the present application may include a first subsection and a second subsection, the first subsection and the second subsection may be perpendicular to each other, and the inner space of the first subsection and the inner space of the second subsection Connected, the inner space of the first subsection and the inner space of the second subsection form an L-shaped air duct. A mounting plate may be arranged between the first sub-section and the second sub-section, and the mounting plate is respectively connected with the first sub-section and the second sub-section, so as to improve the structural strength of the housing 11 . The heating element 15 can be provided in the first sub-section, and one end of the first sub-section is connected to the airflow driving device, and the airflow in the air duct is driven by the airflow driving device.

In some embodiments, the first vent 1210 and the first inlet 121 are the same tuyere, and the second vent 1220 and the first outlet 122 are the same tuyere. In other embodiments, the first vent 1210 and the first inlet 121 are the same tuyere, or the second vent 1220 and the first outlet 122 are the same tuyere.

In addition, for the hot air device 1 of the first embodiment and the second embodiment of the present application, a thermal barrier layer 18 can also be provided in the housing 11 of the present application, and the safety and stability can be improved by the thermal barrier layer 18. To improve energy utilization, save energy and protect the environment, specifically, as shown in FIG. 2, a thermal barrier layer 18 can be arranged in the air duct 12, a thermal barrier air duct can be formed in the thermal barrier layer 18, and the heating element 15 can be arranged in the thermal barrier air duct. The thermal barrier layer 18 may have a gap with the housing 11 to form a thermal barrier channel. That is to say, the interior of the hot air device 1 can be set to three layers, the high-temperature airflow heated by the heating assembly 15 can circulate in the thermal barrier air duct, and the thermal barrier layer 18 can have a gap with the side wall of the air duct 12 to form a heat-resistant channel, Therefore, a part of the heat can be blocked, and the stored heat can not be dissipated. In the hot air device 1 of the first embodiment shown in FIGS. 1-4 , the heat insulating channel 13 arranged on the side wall of the air duct 12 further blocks the heat heat through the circulating low-temperature airflow, thereby producing a double-channel double-layer barrier. . In the hot air device 1 of the second embodiment shown in FIGS. 5-8 , the detection channel 130 arranged on the side wall of the air channel 12 can further block the heat by the circulating low-temperature air flow, thereby producing a double-channel double layer block.

The double-channel double-layer barrier can achieve the effect of blocking the high temperature generated by the heating element 15 and improving the service life and safety of the hot air device 1 . Wherein, the thermal barrier layer 18 may be made of sheet metal or other materials with high temperature resistance and heat insulation, and the present application is not limited thereto.

Optionally, as shown in FIGS. 1-2 , the thermal barrier layer 18 includes a first cover body 181 and a second cover body 182, and the first cover body 181 and the second cover body 182 are fastened to each other to form a thermal barrier air duct, The first cover body 181 and the second cover body 182 can be snapped together by inserting and arranging buckles, or connecting ears can be set on the first cover body 181 and the second cover body 182 to be fixed with screws, etc., which is convenient for production. or replacement accessories. One of the first cover body 181 and the second cover body 182 is provided with a fixing device 151 for positioning the heating assembly 15 , so as to facilitate the installation and removal of the heating assembly 15 . For example, square fixing modules are arranged at both ends of the heating assembly 15 , wherein six or four fixing modules may be arranged at both ends, and the installation method may be interference fit to improve the stability of the heating assembly 15 .

In addition, as shown in FIGS. 1 and 2 , 5 and 6 , protruding structures 20 may be provided on the inner surface of the housing 11 , and the protruding structures 20 may support the thermal barrier layer 18 and connect the outer surface of the thermal barrier layer 18 . Spaced from the inner surface of the housing 11, a certain interval may be formed. The protruding structures 20 can be arranged as elongated bumps, and there can be a plurality of them. The protruding structures 20 can be located between the inner surface of the casing 11 and the thermal barrier layer 18 to prevent the temperature of the thermal barrier layer 18 from being too high. The casing 11 is damaged. In addition, the protruding structure 20 and the inner surface of the housing 11 may be provided as a double-sided support, or a single-sided support. Of course, the protruding structures 20 may also be disposed on the thermal barrier layer 18 .

In addition, for the hot air device 1 according to the first embodiment and the second embodiment of the present application, the heating component 15 may include a protective shell and a heating element, wherein the outer shell 11 , the protective shell and the heating component 15 are arranged in order from outside to inside Arrangement, and there is a gap suitable for airflow passing between the outer shell 11 and the protective shell, and a gap suitable for airflow passing between the protective shell and the heating assembly 15 . By arranging the gaps, while promoting the airflow, the thermal insulation performance between the protective shell and the heating assembly 15 and between the outer shell 11 and the protective shell can be improved, so as to reduce heat transfer and improve the utilization rate of energy. Wherein, an inwardly protruding first protrusion may be provided on the outer casing 11, and the protective shell is supported by the first protrusion, so that a gap is formed between the outer casing 11 and the protective shell. A second protrusion protruding inward can be provided on the protective shell, and the heating assembly 15 is supported and protected by the second protrusion, so that a gap is formed between the protective shell and the heating assembly 15 . The outer casing 11 includes a first casing and a second casing, the first casing and the second casing are buckled to form an air duct, and the inner bottom surface of the first casing and the inner bottom surface of the second casing are both provided with spacers A plurality of first protrusions are provided, the protective shell includes a first protective cover and a second protective cover, the heating assembly 15 is arranged between the first protective cover and the second protective cover, and the inner bottom surface of the first protective cover and the second protective cover Second protrusions are arranged on the inner bottom surface of the cover.

The housing 11 includes a first case and a second case. The first shell includes a first bottom plate and a first side plate disposed on both sides of the first bottom plate, the second shell includes a second bottom plate and a second side plate disposed on both sides of the second bottom plate, and the two first side plates The board and the two second side boards are respectively butted to form an air duct between the first shell and the second shell, wherein a bump is provided on the outer side of the first side board, and the bump is connected to the first side board. A concave structure is formed between the edges of the plates; the inner side of the end of the second side plate is configured as a gap, the end edge of the first side plate is embedded in the gap, and the unit of the second side plate is embedded in the concave, so as to realize the first A shell and a second shell are snapped together.

The protection case may include a first protection cover and a second protection cover, and the first protection cover and the second protection cover may be buckled with each other to jointly define an installation cavity. The heating element 15 is arranged in the installation cavity. The heating assembly 15 includes a stacked heating element and a heat sink, and the heating element may be a heating element such as a heating tube. Optionally, the outer shell 11 of the hot air device also has limit ribs, the limit ribs are arranged on both sides of the protective shell, and a part of the limit ribs is embedded in the protective shell, which has the effect of positioning the protective shell, and can facilitate the quick installation by the installer. The heating assembly 15 improves the stability of the heating assembly 15 . A plurality of limit ribs can be arranged on both sides of the protective shell to further improve the stability of the installation; the limit ribs can be arranged in a strip-shaped structure along the airflow direction to prevent them from obstructing the airflow. The limiting rib on the side of the protective shell close to the air inlet can be integrally formed with the two retaining ribs. The limiting rib extends in the direction that the retaining rib is away from the air inlet, and the two limiting ribs are parallel to each other, which simplifies the structure. The effect of enhancing structural strength. In addition, the protective shell is provided with a connection structure, the connection structure extends out of the casing 11 , and electrical components (eg, ground) can be connected through the connection structure, or the positioning stability of the heating assembly 15 can be improved through the connection structure.

Further, two opposite ends of the protective shell along the airflow direction are provided with positioning rib groups, and the heating assembly 15 is positioned between the two end positioning rib groups in the protective shell. The positioning rib group includes at least one positioning rib. Positioning the heating assembly 15 can fix the heating assembly 15 to prevent the heating assembly 15 from shaking. At the same time, because the positioning rib group is used to fix the heating assembly 15, when the heating assembly 15 needs to be disassembled and replaced, it can be easily removed. disassembly.

Further, the positioning rib can be set in the shape of a flat sheet, for example, the positioning rib can be set in a flat sheet shape parallel to the airflow direction, so that the obstruction of the positioning rib to the airflow can be effectively reduced, the air resistance in the airflow channel can be reduced, and the airflow can be improved. circulation efficiency and effectiveness.

Optionally, the positioning rib group includes a plurality of positioning ribs, and the multiple positioning ribs in the positioning rib group are respectively arranged on opposite sides of the protective shell along the thickness direction, and any one of the opposite sides of the protective shell along the thickness direction. Positioning ribs are provided on opposite sides of the side along the width direction of the protective shell, and a plurality of positioning ribs in the positioning rib group all extend toward the center of the protective shell, thereby making the connection between the heating assembly 15 and the protective shell more convenient. Stable, further reducing the possibility of the heating assembly 15 shaking.

Optionally, the positioning rib group includes four positioning ribs, the four positioning ribs are generally arranged in a rectangular shape, and the four positioning ribs extend toward the center of the rectangle; in addition, the positioning rib group can also be set to one, two One, three or other number of positioning ribs, so as to effectively improve the positioning effect of the heating assembly 15 . Optionally, a positioning rib is formed by stamping on the protective shell, and the positioning rib is configured in the shape of an elastic sheet, which can simplify the processing procedure and reduce the production cost. Specifically, a part of the protective shell is punched toward the inside of the protective shell. After the punching is completed, one end of the positioning rib is connected to the wall of the protective shell, and the other end of the positioning rib extends toward the inside of the protective shell.

Optionally, as shown in FIGS. 1-2 , both ends of the first cover body 181 along the length direction are provided with first flanges bent toward the second cover body 182 , and the upper edge of the second cover body 182 is provided with a first flange. The edges of both ends in the longitudinal direction are provided with second flanges bent toward the first cover body 181 , and the first cover body 181 and the second cover body 182 are fastened together by the cooperation of the first flange and the second flange.

The heating assembly 15 may include a heating element and a radiating element, wherein the heating element and the radiating element are arranged on the inside of the protective shell, wherein the radiating element is attached to the heating element (which can also be spaced apart), thereby improving the heat dissipation efficiency and facilitating the passage of the radiating element. And the air flow of the heating element is heated.

As shown in FIG. 17 , in the present application, hot air can be sent into the dishwasher through a hot air device, and a ventilation structure is additionally provided on the dishwasher to realize the circulation of air flow, and the effect of hot air drying has been achieved. In addition, the present application may also adopt other ways to dissipate heat.

The hot air device 1 of the dishwasher 100 according to still another embodiment of the present application will be described below with reference to FIGS. 9-16 .

9 to 16 , a hot air device 1 for a dishwasher according to an embodiment of the present application includes: an air duct housing and a humidity sensor 8 , wherein the air duct housing has an air duct 12 , an air inlet 10a , an air outlet The tuyere 10b, the air duct 12 extends from the air inlet 10a to the air outlet 10b; the humidity sensor 8 is installed on the air duct shell to detect the gas humidity, and the humidity sensor 8 is configured to detect the humidity in the air duct 12.

According to the hot air device 1 of the dishwasher according to the embodiment of the present application, the humidity sensor 8 is arranged on the hot air device 1, and the humidity of the interior of the dishwasher and the external environment of the dishwasher can be realized by adjusting the air flow direction in the hot air device 1. Therefore, it is possible to quickly measure the humidity of the environment inside and outside the dishwasher, thereby realizing more precise control of the dishwasher, and effectively improving the performance of the dishwasher.

Optionally, the present application can detect the humidity inside the tank when the hot air device 1 is stationary, and detect the external humidity when the hot air device 1 is running, so that the user can select the drying mode according to the detection result, so as to improve the drying efficiency of the dishwasher.

In actual work, referring to Fig. 9, when the hot air device 1 is running, the air flow flows from the air inlet 10a to the air outlet 10b, and the temperature sensor can detect the humidity of the gas in the air duct 12 at this time to judge the humidity of the gas; see Fig. 10 , when the hot air device 1 stops running, the gas in the dishwasher can enter the air duct 12 from the air outlet 10b, and the humidity sensor 8 can detect its humidity; or before the hot air device 1 starts to work, the above method detects The humidity of the gas inside the dishwasher can better determine the drying mode, thereby improving the drying efficiency.

Optionally, the humidity sensor 8 is provided at a position adjacent to the air outlet 10b. As can be seen from the foregoing, when the humidity sensor 8 detects the humidity of the internal air flow, it is necessary to detect the gas humidity in the inner space of the dishwasher. Therefore, arranging the humidity sensor 8 near the air outlet 10b can improve the detection accuracy of the humidity of the internal gas, and the airflow can flow to the vicinity of the humidity sensor 8 faster, thereby improving the detection efficiency. Of course, the humidity sensor 8 can also be arranged in other positions of the air duct housing.

Optionally, the hot air device further includes a sheath 300 for protecting the humidity sensor 8, the sheath 300 wraps at least a part of the humidity sensor 8, and the sheath 300 cooperates with the air duct shell to form a connection between the detection end 81 of the humidity sensor 8 and the wind. A sealed structure that separates the outer space of the casing. By arranging the sealing structure, the influence of the external environment on the detection accuracy of the humidity sensor 8 can be reduced. Effectively improve the detection accuracy of the humidity inside the dishwasher.

Optionally, the air duct shell further has a detection space 10c, the detection space 10c is communicated with the air duct 12, and the detection end 81 of the humidity sensor 8 is located in the detection space 10c, the hot air device 1 further includes a sheath 300, and the sheath 300 wraps the humidity. At least a part of the sensor 8 and the sheath 300 cooperate with the air duct housing to form a sealing structure separating the detection space 10c and the outer space of the air duct housing.

Specifically, the detection space 10c is communicated with the air duct 12; the humidity sensor 8 is installed on the air duct shell, and the detection end 81 of the humidity sensor 8 is located in the detection space 10c, so that the humidity sensor 8 can detect the airflow in the air duct 12. humidity. The sheath 300 wraps at least a part of the humidity sensor 8, and the sheath 300 cooperates with the air duct housing to form a sealing structure separating the detection space 10c and the outer space of the air duct housing. That is to say, the detection space 10c is sealed relative to the external space, the detection space 10c is communicated with the air duct 12, and the humidity sensor 8 is arranged in the detection space 10c, so the detection end 81 of the humidity sensor 8 can communicate with the air duct 12 through the detection space 10c The part detects the airflow in the air duct 12 . Therefore, the sheath 300 can protect the humidity sensor 8, so as to improve the measurement accuracy of the humidity sensor 8, improve the service life of the humidity sensor 8, and reduce the cost. The sealing structure formed by the jacket 300 and the air duct shell can prevent the humidity sensor 8 from contacting the external space, so as to improve the accuracy of the detection result. Therefore, the above structure can accurately detect the gas humidity, has a simple structure, is easy to implement, and is easy to install And the replacement of accessories improves the detection accuracy and practicability of the device.

According to the hot air device 1 of the dishwasher according to the embodiment of the present application, by setting the detection space 10c and setting the humidity sensor 8 in the detection space 10c, the internal humidity of the inner tank can be detected when the hot air device 1 is stationary, and when the hot air device 1 is running The external humidity is detected, so that the user can select the drying mode according to the detection result, so as to improve the drying efficiency of the dishwasher.

In addition, by arranging the sheath 300 to form a detection space 10c that communicates with the air duct 12 and is separated from the outer space of the air duct shell, and arranges the humidity sensor 8 in the detection space 10c, the detection space 10c can be quickly detected and the air duct 12 is connected to the detection space 10c, the humidity in the detection space 10c also reflects the humidity in the air duct 12. Moreover, since the space where the humidity sensor 8 is located is separated from the outer space of the air duct housing, the influence of the external environment on the detection result of the humidity sensor 8 is avoided, and the detection accuracy of the humidity sensor 8 is effectively improved.

Optionally, the air duct housing includes a housing main body 40 and an outer housing 5, the housing main body 40 is the above-mentioned housing 11, an air duct 12 is constructed in the housing main body 40, a detection space 10c is constructed in the outer housing 5, and the outer housing 5 is arranged in the The outer side of the case main body 40, and the case body 5 is connected to the case main body 40, and the case main body 40 is provided with the air passage 12 and the detection port 10d of the detection space 10c. That is, the humidity sensor 8 located in the detection space 10c can detect the gas in the air duct 12 through the detection port 10d which is connected to the detection space 10c between the housing body 40 and the detection space 10c. By setting the detection port 10d, the detection area can be limited to improve the accuracy of detection. sex.

Optionally, the shell body 40 and the outer shell 5 may be an integral structure; or a separate structure, for example, the outer shell 5 is installed at the part where the shell body 40 and the outer shell 5 are connected to facilitate maintenance and replacement.

Optionally, one end of the outer casing 5 is connected to the casing main body 40 and connected to the detection port 10d, the other end of the outer casing 5 is open, a part of the sheath 300 is embedded in the outer casing 5 and closes the open end of the outer casing 5, and the outer casing 5 The open portion of 100 can facilitate the installation and removal of the sheath 300 and the humidity sensor 8 and save material and reduce the weight of the device. The sheath 300 can protect the humidity sensor 8 and also play a sealing role to prevent the humidity sensor 8 from contacting the non-detection area, so as to improve the accuracy of the detection result.

Optionally, a part of the humidity sensor 8 protrudes from the open end of the outer casing 5 and is wrapped by the sheath 300. According to the aforementioned solution, the outer casing 5 is connected to the casing main body 40, and the outer casing 5 is partially connected to the outside. Extending, one end of the outer casing 5 is connected to the casing main body 40 and the other end is open, so that the mechanism of the outer casing 5 can be simplified, and the part of the humidity sensor 8 extending out of the open end can be wrapped by the sheath 300, which can simplify the structure while ensuring accurate detection results. Easy disassembly and maintenance.

11 and 12, optionally, the outer casing 5 includes: a mounting plate 52 and a cover plate 51, the cover plate 51 is covered on the mounting plate 52, and a detection space 10c is formed between the cover plate 51 and the mounting plate 52, so that , the air flow can enter the detection space 10c, the detection space 10c is continuously filled with the measured gas, and the detection end 81 of the humidity sensor 8 is located in the detection space 10c, which can measure the gas humidity more accurately. Wherein, the mounting plate 52 and the cover plate 51 are both connected to the casing body 40, and the cover plate 51 is inclined toward the mounting plate 52 in the direction away from the casing body 40, that is, a triangular detection space 10c can be constructed, or the cover plate 51 can be formed along the The housing body 40 extends outward for a certain distance and then inclines downward to form the detection space 10c into a trapezoidal structure. After the measured airflow enters the detection area of the triangular or trapezoidal structure, the airflow can continue to rise after reaching the slope, so that the measured airflow can stay in the detection space 10c for a longer time, improving the detection accuracy, and the structure is simple and easy to implement.

11 , optionally, the mounting plate 52 is provided with a first rib 521 , a second rib 522 and a third rib 523 , and the first rib 521 and the second rib 522 are both connected to the shell body 40 , And the first rib 521 and the second rib 522 extend in a direction perpendicular to the shell body 40, the third rib 523 is provided on the side of the first rib 521 and the second rib 522 away from the shell body 40, A rib 521 , a second rib 522 and a third rib 523 cooperate to locate the humidity sensor 8 and the sheath 300 . A detection space 10c is formed between the mounting plate 52 and the cover plate 51. Specifically, ribs are provided on the mounting plate 52 for positioning, so that the humidity detection device can be quickly and stably positioned on the mounting plate 52, and the structure Simple.

10 and 11 , optionally, the housing main body 40 includes a first part 41 and a second part 42 , the first part 41 and the second part 42 are perpendicular to each other, and the first part 41 and the second part 42 are constructed with L-shaped The air duct 12 and the mounting plate 52 are arranged between the first part 41 and the second part 42 . According to the hot air device of the embodiment of the present application, the first part 41 is adjacent to the air inlet 10a, the second part 42 is adjacent to the air outlet 10b, and the mounting plate 52 is located at the gap of the L-shaped air duct 12 formed by the first part 41 and the second part 42 perpendicular to each other Therefore, the space occupied by the hot air device can be saved, that is, the first part 41 , the second part 42 and the mounting plate 52 can form a rectangular structure as a whole. Of course, the size of the mounting plate 52 can also be changed according to the situation. Optionally, the humidity sensor 8 can be arranged in an area adjacent to the second part 42. Since the heating element 6 of the hot air device 1 is arranged at a position adjacent to the air inlet 10a, that is, the heating element 6 is arranged in the first part 41, the humidity sensor is 8 is disposed on the housing main body 40 of the second part 42, and the humidity sensor 8 may be far away from the heating element 6, while the humidity sensor 8 is adjacent to the air outlet 10b. In this way, it is convenient for the humidity sensor 8 to detect the internal humidity, while avoiding being affected by the high temperature of the heating component (ie, the heating element 6 ), thereby improving the detection accuracy and prolonging the service life of the humidity sensor 8 . According to the foregoing solution, in the second portion 42 of the shell body 40, the first rib 521 and the second rib 522 extend in a direction perpendicular to the shell body 40, and the third rib 523 is provided on the first rib 521 and the second rib 522. On the side of the rib 522 away from the casing body 40 , the humidity sensor 8 can be positioned on the side wall of the air duct 12 of the second part 42 to detect the airflow humidity in the air duct 12 .

In addition, the housing body 40 in the present application may include a first housing and a second housing, the first housing and the second housing may be fastened to each other, and an air duct is formed between the first housing and the second housing 12, and the mounting plate 52 can be connected with the first casing, and the cover plate 51 can be connected with the second casing. When the first casing and the second casing are buckled together to form the air duct 12, the The aforementioned detection space 10c may also be constructed between the plates 51 . 11 shows a schematic diagram of the first housing.

FIG. 12 shows a cross-sectional view of the hot air device 1 of the dishwasher. With reference to FIGS. 12 to 14 , optionally, the sheath 300 includes a socket part 31 and a sealing part 32 , and the socket part 31 has one end open and the other One end is closed in a tubular shape, the sealing part 32 can be connected to the periphery of the open end of the socket part 31, and the sealing part 32 is in contact with the inner surface of the detection space 10c to form a sealing structure, wherein the detection end 81 of the humidity sensor 8 is connected to the socket There is a gap connecting the air passage 12 between the parts 31, the terminal of the humidity sensor 8 is nested and connected to the socket part 31, and the end of the socket part 31 away from the sealing part 32 is provided with a wire harness for the humidity sensor 8 to pass through. Outlet 30. That is to say, the sheath 300 can not only protect the humidity sensor 8 but also play a sealing role. 42 is connected, and the other end is connected to the socket part 31; the socket part 31 is tubular, and a part of the humidity sensor 8 is placed in the socket part 31.

Optionally, the socket portion 31 can also be in other shapes that can cooperate with and protect the humidity sensor 8 , and the present application is not limited thereto.

Optionally, a heating element 6 is provided in the air duct housing, and the detection space 10c is connected to the downstream space of the heating element 6 . According to the aforementioned solution, the heating element 6 is provided in the first part 41, and the detection space 10c is connected to the second part 42, that is, the first part 41 of the casing body 40 is located in the upstream space, and the second part 42 is located in the downstream space. The detection space 10c is set in the downstream space, and the airflow heated by the heating element 6 can be detected, which is convenient for the user to judge the humidity of the airflow used for drying the inner tank of the dishwasher; meanwhile, the detection space 10c is far away from the heating element 6 to avoid damage caused by high temperature .

Wherein, in the extending direction of the air duct 12, the upstream is closer to the air inlet 10a than the downstream, and the downstream is closer to the air outlet 10b than the upstream. In addition, the air inlet 10a and the air outlet 10b described in this application are for the convenience of understanding the technical solutions of the present application. The air inlet 10a in this application can also be used for air intake and air outlet, and the air outlet 10b can also be used Regarding the air intake and the air outlet, that is to say, the air flow in the air duct 12 can flow from the air inlet 10a to the air outlet 10b, and also can flow from the air outlet 10b to the air inlet 10a.

9 and 16 , optionally, the heating element 6 may be composed of a heating body 61 and a cooling plate 62 , and the heating body 61 is connected to the cooling plate 62 . The radiating plate 62 is composed of a plurality of fins 63 in a meandering shape. The heating element 61 transfers heat to the radiating plate 62, and the airflow passes through the radiating plate 62 to be heated, thereby increasing the heat exchange area and improving the heating efficiency of the airflow. Optionally, the heating element 6 can be provided with a protective shell 7, and the protective shell 7 can protect the air duct shell from being in direct contact with the heating element 6 and accelerate the aging, and improve the service life of the air duct shell while avoiding the heating element 6 and the wind. A safety accident occurs due to the contact of the duct shell, which improves the safety of the heating device.

Optionally, a boss 71 may be provided on the protective shell 7 , the boss 71 protrudes from the inner surface of the protective shell 7 , and the boss 71 supports the heating body 61 so that the heating body 61 is spaced from the inner surface of the protective shell 7 , to further prevent the heating element 61 from being too high to damage the protective shell 7 and the air duct shell, so as to have the effect of blocking high temperature and improve the safety of the device. Specifically, the convex surface of the boss 71 is an arc surface, which can reduce the difficulty of processing. At the same time, setting the convex surface of the boss 71 as an arc surface can enhance the structural strength. At the same time, passivating the curve of the boss 71 can prevent the boss 71 from being installed. During the disassembly process, other parts may be scratched or the installer may be scratched. For example, the boss 71 can be set in a semi-circular structure, and the outer circumference of the circle is tangent to the outer surface of the heating body 61. Referring to FIG. 16, this can reduce the contact area between the boss 71 and the heating body 61, and avoid the boss 71 It is in a high temperature state for a long time to improve the service life of the boss 71 . Optionally, a plurality of bosses 71 may be provided on the inner surface of the protective shell 7 . Optionally, the boss 71 and the protective shell 7 may be formed separately or integrally. Optionally, bosses 71 are formed by stamping on the protective shell 7 .

The dishwasher according to the present application includes: an inner tank and a hot air device 1, the hot air device 1 is connected to the inner tank, the hot air device 1 is the hot air device 1 for a dishwasher according to the foregoing, and the air outlet 10b is connected to the inner tank. interior space. Specifically, the hot air device 1 is placed on the body to generate hot air, and the air outlet 10b of the hot air device 1 communicates with the inner space of the inner container of the dishwasher, so as to dry the tableware. During the drying process of the dishwasher, the air flow in the air duct 12 of the hot air device 1 can flow into the detection space 10c, and the detection end 81 of the humidity sensor 8 is located in the detection space 10c to detect humidity; when the hot air device 1 stops running, the washing machine The gas in the inner tank of the dishwasher can enter the air duct 12 from the air outlet 10b, and the humidity sensor 8 can detect its humidity; Better determination of drying mode, thereby improving drying efficiency.

9 and 10 respectively show a hot air device 1 according to an embodiment of the present application, wherein the hot air device 1 includes a casing body 40 , and the casing body 40 has a first part 41 and a second part 42 , the first part 41 and the second part 42 It can be perpendicular to each other, and the inner space of the first part 41 and the inner space of the second part 42 are connected. The inner space of the first part 41 and the inner space of the second part 42 form an L-shaped air duct 12, and the mounting plate 52 can be Provided between the first part 41 and the second part 42, the mounting plate 52 is connected with the first part 41 and the second part 42, respectively. The heating element 6 can be arranged in the first part 41, and one end of the first part 41 is connected to the airflow driving device, and the airflow in the air duct 12 is driven to circulate by the airflow driving device, wherein the heating element 6 is arranged in the air duct 12 and is close to the airflow driving device. One end of the second part 41 is connected to the first part 41, and the other end of the second part 41 is connected to a third part, one end of the third part is sleeved on the other end of the second part 41, and the other end of the third part is provided with The air outlet, wherein the third part includes a limit ring, the limit ring is arranged around the air outlet, and a reinforcing rib is arranged on the limit ring. In addition, the connection between the first part 41 and the second part 42 is arc-shaped transition.

The humidity detection of the airflow inside and outside the dishwasher can be controlled by controlling the airflow direction in the air duct 12 .

For example, as shown in Figure 9, under the driving action of the airflow drive device, the airflow will flow from the airflow drive device to the air outlet, and will pass through the heating element 6 during the circulation process, wherein the heating element 6 may be turned on or not. When the airflow passes through the detection port 10d, since the detection port 10d can be connected to the ventilation duct 12 and the detection space 10c, the humidity sensor 8 provided in the detection space 10c will perform humidity detection, thereby completing the detection of the outdoor air humidity of the dishwasher. detection.

For another example, as shown in FIG. 10 , the air flow can also enter the air duct 12 through the air inlet 10a (for example, the air in the inner tank circulates into the air duct 12 spontaneously, or the airflow driving device is arranged to be able to be forward and reverse. In the form of driving airflow), the airflow will flow to the air inlet 10a, and will pass through the heating element 6 in the circulation process, wherein the heating element 6 can be opened or not. The ventilation duct 12 is connected to the detection space 10c, therefore, the humidity sensor 8 disposed in the detection space 10c will perform humidity detection, thereby completing the detection of the indoor air humidity of the dishwasher.

FIG. 13 shows the assembly diagram of the humidity sensor 8 and the sheath 300 of the hot air device 1; FIG. 14 shows a side view of the structure of the sheath 300 of the hot air device 1; FIG. 15 shows the structure of the humidity sensor 8 of the hot air device 1 side view.

FIG. 16 shows a side view of the structure of the heating element 6 of the hot air device 1. The opposite ends of the protective shell 7 along the airflow direction are provided with positioning rib groups, and the heating assembly (ie the heating element 6) is positioned in the protective shell 7. Between the positioning rib groups at the ends, the positioning rib group includes at least one positioning rib. By setting the positioning rib group to position the heating component, the heating component can be fixed and the heating component can be prevented from shaking. When the heating element is damaged and needs to be disassembled and replaced, it can be easily disassembled.

Optionally, the positioning rib group includes a plurality of positioning ribs, and the multiple positioning ribs in the positioning rib group are respectively arranged on opposite sides of the protective shell 7 along the thickness direction, and the protective shell 7 on the opposite sides along the thickness direction. Positioning ribs are provided on both sides opposite to the width direction of the protective shell 7 on either side, and a plurality of positioning ribs in the positioning rib group all extend toward the center of the protective shell 7, so that the heating element and the protective shell can be connected to each other. The connection of 7 is more stable, further reducing the possibility of shaking of the heating element.

Optionally, the positioning rib group includes four positioning ribs, the four positioning ribs are generally arranged in a rectangular shape, and the four positioning ribs extend toward the center of the rectangle; in addition, the positioning rib group can also be set to one, two One, three or other number of positioning ribs, so as to effectively improve the positioning effect of the heating component.

Optionally, a positioning rib is formed by stamping on the protective shell 7, and the positioning rib is configured in the shape of an elastic sheet, which can simplify the processing procedure and reduce the production cost. Specifically, a part of the protective shell 7 is punched toward the inside of the protective shell 7 . After the punching is completed, one end of the positioning rib is connected to the wall of the protective shell 7 , and the other end of the positioning rib extends toward the inside of the protective shell 7 .

Optionally, the protective shell 7 includes an upper cover and a lower cover, and the upper cover and the lower cover are fastened to each other to jointly define an installation cavity.

Optionally, both ends of the upper cover along the length direction are provided with a first flange that is bent in the direction of the lower cover, and both ends of the lower cover along the length direction are provided with a second flange that is bent in the direction of the upper cover. The upper cover and the lower cover are fastened through the cooperation of the first flange and the second flange.

Optionally, the edges of both ends of the lower cover along the width direction are provided with a plurality of matching grooves, the inner surface of the casing is provided with a plurality of fixing blocks, and the matching grooves and the fixing blocks are in one-to-one correspondence.

According to some embodiments of the present application, the heating assembly includes a heating pipe and a heat sink.

Specifically, the radiator is connected to the heating pipe, and the radiator and the heating pipe are stacked along the thickness direction of the protective shell 7. By disposing the radiator in this way, the radiator can better dissipate heat to the heating pipe. The slits extending in the direction of the airflow of the channel allow the airflow to flow through the slits in the heat sink, thereby better reducing the temperature of the heat sink.

In some embodiments, the air inlet 10a and the first inlet 121 are the same tuyere, and the air outlet 10b and the first outlet 122 are the same tuyere. In other embodiments, the air inlet 10a and the first inlet 121 are the same air outlet, or the air outlet 10b and the first outlet 122 are the same air outlet.

In the description of this application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "circumferential", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation or a specific orientation. construction and operation, and therefore should not be construed as limitations on this application.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature delimited with "first", "second" may expressly or implicitly include at least one of that feature. In the description of the present application, "plurality" means at least two, such as two, three, etc., unless expressly and specifically defined otherwise.

In this application, unless otherwise expressly specified and limited, the terms "installed", "connected", "connected", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between the two elements, unless otherwise specified limit. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations.

In the description of this specification, description with reference to the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples", etc., mean specific features described in connection with the embodiment or example , structure, material or feature is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms are not necessarily directed 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. Furthermore, those skilled in the art may combine and combine the different embodiments or examples described in this specification, as well as the features of the different embodiments or examples, without conflicting each other.

Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limitations to the present application. Embodiments are subject to variations, modifications, substitutions and variations.

Claims

A hot air device for a dishwasher, comprising:

A casing, an air duct and a thermal insulation channel are formed in the casing, the air duct has a first inlet and a first outlet, the thermal insulation channel has a second inlet and a second outlet, and the thermal insulation channel is provided in the around the outside of the air duct, and the heat insulation channel and the air duct extend in the same direction;

a fan assembly for driving airflow from the first inlet to the first outlet and for driving airflow from the second inlet to the second outlet;

A heating assembly is placed in the air duct.
The hot air device for a dishwasher according to claim 1, wherein the second inlet communicates with the air duct, and the second inlet is located downstream of the first inlet, and the fan assembly is connected to the air duct. The first inlet is connected.
The hot air device of the dishwasher according to claim 2, wherein a guide structure is provided on the side wall of the air duct, and the guide structure is configured to guide the airflow in the air duct to the second inlet.
The hot air device for a dishwasher according to claim 3, wherein the second inlet is provided on a side wall of the air duct, and the guide structure is configured to be connected to an inner edge of the second inlet The guide structure is in the shape of an air deflector, and the guide structure extends obliquely toward the inside of the air duct and toward the first inlet.
The hot air device of the dishwasher according to claim 3, wherein the second inlet is provided on the side wall of the air duct, and the second inlet is opposite to the heating component, and the heating component is connected to the heating component. There is a gap between the side walls of the air duct, the guide structure is configured in the shape of an air guide bump, the air guide bump is arranged on the side wall of the heating assembly, and the wind guide bump Opposite to the second inlet, the air guide protrusion has a guide slope suitable for guiding airflow toward the second inlet.
The hot air device of the dishwasher according to claim 1, wherein the second inlet of the heat insulation channel is communicated with the air channel, and the second inlet is located in the air flow direction in the air channel. upstream of or opposite the heating assembly.
The hot air device for a dishwasher according to claim 1, wherein the casing is provided with a wire hole, the wire harness connecting the heating assembly is drawn out from the wire hole, and the first part of the heat insulation channel is The second inlet is communicated with the air duct, and the second inlet is located downstream of the wire passage hole in the airflow direction in the air duct.
The hot air device for a dishwasher according to any one of claims 1-7, wherein the first outlet and the second outlet are flush and oriented in the same direction.
The hot air device for a dishwasher according to any one of claims 1-8, wherein the side wall of the casing is a double-layer structure, and the heat-insulating channel is formed in the double-layer structure.
The hot air device for a dishwasher according to any one of claims 1-8, wherein a thermal barrier layer is provided in the air duct, a thermal barrier air duct is formed in the thermal barrier layer, and the heating component is provided with a thermal barrier layer. in the thermal barrier air duct, and there is a gap between the thermal barrier layer and the casing.
The hot air device for a dishwasher according to claim 10, wherein the thermal barrier layer comprises a first cover body and a second cover body, and the first cover body and the second cover body are fastened to each other to form a In the heat blocking air duct, one of the first cover body and the second cover body is provided with a fixing device for positioning the heating assembly.
The hot air device of the dishwasher according to claim 10 or 11, wherein a convex structure is provided on the inner surface of the casing, and the convex structure supports the thermal barrier layer so that the thermal barrier layer can be heated. The outer surface is spaced apart from the inner surface of the housing.
The hot air device for a dishwasher according to any one of claims 1-12, wherein a detection channel is formed in the casing, the air channel has a first ventilation port and a second ventilation port, and the detection channel has a a third air vent and a fourth air vent, the fan assembly is further used to drive the airflow in the detection channel;

The hot air device further includes a humidity detection member configured to detect the humidity of the airflow in the detection channel.
The hot air device for a dishwasher according to claim 13, wherein the housing comprises a first side wall and a second side wall, and the detection channel is formed between the first side wall and the second side wall , and the air duct and the detection channel are respectively located on opposite sides of the first side wall, the second side wall is provided with a mounting groove, the mounting groove is communicated with the detection channel, the humidity The detection piece is installed in the installation groove.
The hot air device for a dishwasher according to claim 14, wherein a wire hole is provided on the bottom wall of the installation groove, and a wire harness connected to the humidity detection member is drawn out from the wire hole.
The hot air device for a dishwasher according to claim 14 or 15, wherein a sheath is provided in the installation groove, the sheath wraps the humidity detection member, and the sheath is connected to the humidity detection member In sealing fit, the probe of the humidity detection element extends into the detection channel.
The hot air device for a dishwasher according to any one of claims 14-16, wherein the detection channel is L-shaped, the first side wall includes a first branch and a second branch, the first branch The connection with the second branch is L-shaped.
The hot air device for a dishwasher according to claim 17, wherein a reinforcing rib is provided at the connection between the first branch and the second branch, and the reinforcing rib is respectively connected with the first branch and the second branch. The two branches are connected, and the installation groove is directly opposite to the reinforcing rib.
The hot air device for a dishwasher according to any one of claims 13-18, wherein the third ventilation opening is opposite to the airflow from the first ventilation opening to the second ventilation opening in the air duct The direction is upstream of the heating assembly.
The hot air device for a dishwasher according to any one of claims 13-19, wherein the fan assembly has an air outlet, and the third air outlet of the detection channel is connected to the air outlet of the air duct. The first air vents are all directly opposite to the air outlet.
The hot air device for a dishwasher according to any one of claims 13-20, wherein the third ventilation opening is in a flared shape.
The hot air device for a dishwasher according to any one of claims 13-21, wherein a guide rib is provided in the casing, and the guide rib is directly opposite to the fourth ventilation opening.
The hot air device for a dishwasher according to any one of claims 13-22, wherein the housing comprises:

the first part, the fan is arranged in the first part;

a second part, one end of the second part is communicated with the first part, and the second part has the air duct and the detection channel;

The third part, the third part is connected to the other end of the second part, the space of the third part is connected with the second vent and the fourth vent, and a hot air outlet is provided on the third part.
The hot air device for a dishwasher according to any one of claims 13-23, wherein the first ventilation opening and the first inlet are the same air opening; and/or the second ventilation opening is the same as the first inlet opening; The first outlets are the same tuyere.
The hot air device for a dishwasher according to any one of claims 1-22, wherein the hot air device further comprises:

an air duct housing, the air duct housing has the air duct, an air inlet, and an air outlet, and the air duct extends from the air inlet to the air outlet;

A humidity sensor mounted on the air duct housing and configured to detect humidity within the air duct.
The hot air device for a dishwasher according to claim 25, wherein the humidity sensor is provided at a position adjacent to the air outlet.
The hot air device for a dishwasher according to claim 25 or 26, wherein the hot air device further comprises:

a sheath, the sheath wraps at least a part of the humidity sensor, and the sheath cooperates with the air duct housing to form a seal that separates the detection end of the temperature sensor from the outer space of the air duct housing structure.
The hot air device for a dishwasher according to claim 25 or 26, wherein the air duct shell further has a detection space, the detection space communicates with the air duct, and the detection end of the humidity sensor is located in the In the detection space, the hot air device further includes a sheath, the sheath wraps at least a part of the humidity sensor, and the sheath cooperates with the air duct shell to separate the detection space and the air duct The sealing structure of the outer space of the shell.
The hot air device for a dishwasher according to claim 28, wherein the air duct housing comprises a housing main body and an outer housing, the housing main body is the outer housing, and the air duct is formed in the housing main body, so that the The detection space is constructed in the outer casing, the outer casing is arranged on the outer side of the casing main body, and the outer casing is connected with the casing main body, and the casing main body is provided with a connection between the air duct and the Describe the detection port of the detection space.
The hot air device for a dishwasher according to claim 29, wherein one end of the outer casing is connected to the casing main body and is connected to the detection port, the other end of the outer casing is open, and the sheath has an open end. A portion is embedded in the outer casing and closes the open end of the outer casing.
The hot air device of a dishwasher according to claim 29 or 30, wherein a part of the humidity sensor protrudes from the open end of the outer casing and is wrapped by the sheath.
The hot air device of a dishwasher according to claim 29 or 30, wherein the outer casing comprises:

mounting plate;

a cover plate, the cover plate is covered on the mounting plate, the detection space is formed between the cover plate and the mounting plate,

Wherein, both the mounting plate and the cover plate are connected with the casing body, and the cover plate is inclined toward the mounting plate in a direction away from the casing body.
The hot air device for a dishwasher according to claim 32, wherein the mounting plate is provided with a first rib, a second rib and a third rib, the first rib and the second rib The bars are all connected with the shell body, and the first rib and the second rib extend in a direction perpendicular to the shell body, and the third rib is arranged on the first rib and the second rib. The first rib, the second rib and the third rib cooperate to locate the humidity sensor and the sheath on the side of the second rib away from the shell body.
The hot air device for a dishwasher according to any one of claims 29 to 33, wherein the housing body comprises a first part and a second part, the first part and the second part are perpendicular to each other, and the An L-shaped air duct is formed in the first part and the second part, and the mounting plate is arranged between the first part and the second part.
The hot air device for a dishwasher according to any one of claims 28-34, wherein the sheath comprises a socket part and a sealing part, and the socket part is in the shape of a tube with one end open and the other end closed, so The sealing portion is connected to the periphery of the open end of the socket portion, and the sealing portion is in contact with the inner surface of the detection space to form the sealing structure, wherein the detection end of the humidity sensor is connected to the socket. There is a gap connected to the air duct between the connecting parts, the terminal of the humidity sensor is nested and connected to the socket part, and the end of the socket part far from the sealing part is provided with a humidity sensor. The outlet through which the wire harness passes.
The hot air device for a dishwasher according to any one of claims 25-35, wherein the air inlet is the same as the first inlet; and/or the air outlet is the same as the first inlet The outlet is the same outlet.
A dishwasher comprising:

a body with a washing cavity in the body;

A hot air device, the hot air device is placed on the body, the hot air device is the hot air device according to any one of claims 1-36, and the outlet of the hot air device is connected to the washing cavity.