Hot air device and dishwasher

Abstract

The present invention discloses a hot air device of a dishwasher and a dishwasher, comprising: a housing, a fan assembly, and a heating assembly, wherein an air duct and a heat-insulating channel are formed in the housing, wherein the air duct has a first inlet and a first outlet, wherein the heat-insulating channel has a second inlet and a second outlet, and wherein the heat-insulating channel is arranged on a side wall of at least one side of the air duct; wherein the fan assembly is used to drive the airflow from the first inlet to the first outlet and to drive the airflow from the second inlet to the second outlet; and wherein the heating assembly is arranged in the air duct. Through the above technical solution, the problem of the short life of the housing of the hot air device or the possible safety problem caused by the excessively high temperature of the air duct when the heating element of the hot air device is working is solved, thereby improving the service life and safety of the hot air device.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliances, and in particular to a heating device for a dishwasher and the dishwasher. Background Art

[0002] During the drying stage, the dishwasher uses a hot air device to blow hot air into the dishwasher cavity to speed up the drying of dishes. In the related art, the shell of the hot air device is mostly one-layer. When the temperature in the air duct is high, the temperature of the shell of the hot air device will also increase, reducing the service life of the shell. In addition, in order to improve the drying efficiency or storage performance of the dishwasher, it is usually chosen to increase the power of the heating device, but it is difficult to achieve because the shell temperature will be too high and there will be safety risks. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems in the related art to a certain extent. To this end, one object of the present invention is to provide a hot air device for a dishwasher, the hot air device having a heat insulation channel for blocking the high temperature generated by the heating component on the shell of the hot air device, so as to improve the service life and safety of the hot air device.

[0004] The second object of the present invention is to provide a dishwasher. By applying the above-mentioned 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, thereby improving the service life and safety of the hot air device of the dishwasher.

[0005] The hot air device of the dishwasher according to the present invention comprises: a shell, a fan assembly, and a heating assembly, wherein an air duct and a heat-insulating channel are formed in the shell, the air duct has a first inlet and a first outlet, the heat-insulating channel has a second inlet and a second outlet, the heat-insulating channel is arranged around the outside of the air duct, and the heat-insulating channel and the air duct extend in the same direction; the fan assembly is used to drive the airflow from the first inlet to the first outlet and to drive the airflow from the second inlet to the second outlet, and the heating assembly is placed in the air duct.

[0006] According to the hot air device of the dishwasher of the present invention, the hot air device has a shell, and an air duct with a first inlet and a first outlet and a heat-insulating channel with a second inlet and a second outlet are formed in the shell. The fan component is used to drive the air flow in the air duct and the heat-insulating channel. The heating component is placed in the air duct to heat the air flow. The heat-insulating channel is arranged on the side wall of the air duct 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.

[0007] In addition, the hot air device of the dishwasher according to the present invention also has the following additional technical features:

[0008] Further, the second inlet is communicated with the air duct, and the second inlet is located downstream of the first inlet, and the fan assembly is connected to the first inlet.

[0009] Furthermore, 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.

[0010] Furthermore, the second inlet is arranged on the side wall of the air duct, the guide structure is configured in the shape of an air guide plate connected to the inner edge of the second inlet, and the guide structure extends obliquely toward the inside of the air duct and toward the first inlet.

[0011] Further, the second inlet is arranged on the side wall of the air duct, and the second inlet is opposite to the heating component, and there is a gap between the heating component and the side wall of the air duct, and the guide structure is constructed in the shape of an air guide protrusion, and the air guide protrusion is arranged on the side wall of the heating component, and the air guide protrusion is opposite to the second air inlet, and the air guide protrusion has a guiding slope suitable for guiding the airflow toward the second inlet.

[0012] Further, the second inlet of the heat insulation channel is communicated with the air duct, and the second inlet is located upstream of the heating component or opposite to the heating component in the air flow direction in the air duct.

[0013] Furthermore, the shell is provided with a wire hole, and the wiring harness connecting the heating component is led out from the wire hole. The second inlet of the heat insulation channel is connected to the air duct, and the second inlet is located downstream of the wire hole in the air flow direction in the air duct.

[0014] Furthermore, the first outlet is flush with the second outlet and faces the same direction.

[0015] Furthermore, the side wall of the shell is a double-layer structure, and the heat insulation channel is constructed in the double-layer structure.

[0016] Furthermore, a heat-blocking insulation layer is provided in the air duct, a heat-blocking air duct is formed in the heat-blocking insulation layer, the heating component is provided in the heat-blocking air duct, and a gap is provided between the heat-blocking insulation layer and the outer shell.

[0017] Furthermore, the heat-blocking layer comprises a first cover body and a second cover body, the first cover body and the second cover body are buckled together to form the heat-blocking air duct, and a fixing device for positioning the heating component is provided on one of the first cover body and the second cover body.

[0018] Furthermore, a protruding structure is provided on the inner surface of the outer shell, and the protruding structure supports the thermal barrier layer to separate the outer surface of the thermal barrier layer from the inner surface of the outer shell.

[0019] The dishwasher according to the present invention comprises: a machine body and a hot air device, wherein the machine body has a washing cavity; the hot air device is placed on the machine body, the hot air device is the aforementioned hot air device, and the outlet of the hot air device is connected to the washing cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of a hot air device in one embodiment of the present invention.

[0021] Figure 2 Schematic diagram of a hot air device in one embodiment of the present invention.

[0022] Figure 3 yes Figure 1 A partial enlarged view of area A in the middle circle.

[0023] Figure 4 yes Figure 1 A partial enlarged view of another embodiment of the middle circle A area.

[0024] Figure 5 Schematic diagram of the structure of a dishwasher in one embodiment of the present invention.

[0025] Reference numerals:

[0026] Dishwasher 100,

[0027] Hot air device 1, housing 11, fan assembly 14, wire hole 16, guide structure 17, heat-blocking air duct, protruding structure 20, hot air outlet 21,

[0028] Air duct 12, first inlet 121, first outlet 122,

[0029] The heat-insulating channel 13, the second inlet 131, the second outlet 132,

[0030] Heating assembly 15, fixing device 151,

[0031] The heat-blocking layer 18, the first cover 181, and the second cover 182 block the heat passage.

[0032] Machine body 2, washing chamber 3, water vapor outlet 4. DETAILED DESCRIPTION

[0033] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0034] like Figure 1-Figure 2 As shown, this embodiment provides a hot air device 1 of a dishwasher 100 , including: a housing 11 , a fan assembly 14 , and a heating assembly 15 .

[0035] The housing 11 can form an air duct 12, providing a place for gas flow; the housing 11 is also used to form a heat-insulating 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 of the air duct 12 to the outlet, and the fan assembly 14 is also used to drive the air flow from the inlet of the heat-insulating channel 13 to the outlet. The heating assembly 15 is placed in the air duct 12, and the heating assembly 15 is used to heat the air flow in the air duct 12, so that the air flow becomes a high-temperature air flow after passing through the heating assembly 15.

[0036] 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 insulation channel 13 may also be formed in the housing 11, and the heat insulation channel 13 may be arranged around the outside of the air duct 12, and the heat insulation channel 13 may have a second inlet 131 and a second outlet 132. The heating component 15 may be placed in the air duct 12, and the fan component 14 may be used to drive the airflow from the first inlet 121 to the first outlet 122. In addition, the fan component 14 may also be used to drive the airflow from the second inlet 131 to the second outlet 132. In other words, two airflow channels are formed inside the housing 11, wherein the heat insulation channel 13 is arranged on the periphery of the air duct 12 to prevent the housing 11 from overheating. The fan assembly 14 can simultaneously deliver airflow to the air duct 12 and the insulation channel 13. After the airflow enters from the first inlet 121, it is heated by the heating assembly 15 in the air duct 12 to become high-temperature gas. The airflow enters the insulation channel 13 from the second inlet 131 and is directly discharged from the second outlet 132 along the airflow channel.

[0037] After the fan assembly 14 is started, part of the airflow generated by the fan assembly 14 enters the air duct 12 from the first inlet 121, flows through the heating assembly 15 in the air duct 12, and is heated by the heating assembly 15 to become a high-temperature airflow, which is discharged from the first outlet 122; the other part of the airflow enters the heat-insulating channel 13 from the second inlet 131 and is discharged from the second outlet 132. Since the heat-insulating channel 13 is arranged around the air duct 12, the airflow in the heat-insulating channel 13 cannot be directly heated by the heating assembly 15 placed in the air duct 12, and therefore, the heat-insulating channel 13 transmits a relatively low-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 housing 11, thereby reducing the heat loss in the air duct 12 and blocking the high temperature generated by the heating assembly 15, thereby improving the service life and safety of the hot air device 1.

[0038] According to the hot air device 1 of the dishwasher 100 of the embodiment of the present invention, a heat insulation channel 13 is set on the side wall of the air duct 12. The heat insulation channel 13 can be used to insulate the air flow in the air duct 12, thereby reducing or preventing the heat in the air duct 12 from being directly dissipated to the outside of the shell 11, thereby effectively improving the energy utilization rate of the hot air device 1.

[0039] Specifically, part of the airflow generated by the fan assembly 14 enters the air duct 12. Since a heating assembly is provided in the air duct 12, the airflow entering the air duct 12 will exchange heat with the heating assembly and then flow to the first outlet. That is, the airflow flows through the heating assembly 15 in the air duct 12, and the airflow is heated by the heating assembly 15 to become a high-temperature airflow, and is discharged from the first outlet 122. Another part of the airflow enters the heat-insulating channel 13 from the second inlet 131. Since the heat-insulating channel 13 is provided around the outside of the air duct 12, the airflow in the heat-insulating channel 13 is separated from the air duct 12. Therefore, the heating assembly cannot directly heat the airflow in the heat-insulating channel 13. In other words, the heating assembly is separated from the heat-insulating channel 13. The airflow in the heat-insulating channel 13 cannot be directly heated by the heating assembly 15 placed in the air duct 12. Thus, the relatively low-temperature airflow is transmitted through the heat-insulating channel 13. A barrier is formed, and the heat in the air duct is difficult to directly exchange heat with the external environment of the hot air device, which effectively reduces the heat exchange efficiency and improves energy utilization. At the same time, since the air flow temperature in the insulation channel 13 is relatively low, the heat exchange rate between the air flow in the insulation channel 13 and the external environment can also be reduced.

[0040] In addition, the provision of the heat-insulating air duct 13 can prevent the heat in the air duct 12 from being directly dissipated outside the housing 11, thereby reducing the outer surface temperature of the housing 11 and reducing the impact on other components outside the housing 11. Moreover, since the temperature of the air flow in the heat-insulating air duct 13 is relatively low, most of the heat in the air duct 12 will be absorbed by the air flow in the heat-insulating channel 13 during the process of dissipation, thereby reducing heat loss and improving energy utilization.

[0041] Optionally, the fan assembly 14 can be configured to be connected to the first inlet 121 and the second inlet 131 at the same time, and the fan assembly 14 simultaneously delivers airflow to the air duct 12 and the heat-insulating channel 13. In addition, the fan assembly 14 can also be composed of a plurality of fans, one fan connected to the air duct 12 to drive the airflow in the air duct 12, and one fan connected to the heat-insulating channel 13 to drive the airflow in the heat-insulating channel 13. In addition, the fan separately provided for the heat-insulating channel 13 can be a fan for introducing cold air.

[0042] In addition, the heat insulation channel 13 may be provided on both sides of the air duct 12 , or the heat insulation channel 13 may be provided only on one side wall of the air duct 12 .

[0043] Optionally, the second inlet 131 of the heat-insulating channel 13 is connected to the air duct 12, and the second inlet can be located downstream of the first inlet, so that the structure of the hot air device can be simplified by simply connecting the fan assembly to the first inlet. Therefore, the fan assembly can be connected to the first inlet, thereby simplifying the structure.

[0044] In addition, when the airflow reaches the second inlet 131, part of the airflow enters the heat-insulating channel 13, and part of the airflow enters the air duct 12. The second inlet 131 is located upstream of the heating component 15 in the airflow direction in the air duct 12, that is, after the airflow enters the air duct 12, the airflow will enter the heat-insulating air duct 13 through the second inlet 131 before passing through the heating component 15. Since the airflow will become a high-temperature airflow after passing through the heating component 15, the second inlet 131 is arranged upstream of the heating component 15 to ensure that the fluid entering the heat-insulating channel 13 is a low-temperature airflow.

[0045] In addition, it can also be arranged that the second inlet 131 is opposite to the heating assembly 15 in the air flow direction in the air duct 12, that is, after the airflow enters the air duct 12, the airflow will enter the heat-insulating air duct 13 through the second inlet 131 when passing through the heating assembly 15. 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 heat-insulating air duct 13 is not heated by the entire heating assembly 15, so as to ensure that the fluid entering the heat-insulating channel 13 is a low-temperature airflow relative to the airflow in the air duct 12.

[0046] Optionally, the second inlet 131 of the heat-insulating channel 13 is directly connected to the first inlet 121 of the air duct 12. This facilitates the airflow to enter the airflow channels separately, has a simple structure, and is easy to produce and install. When the same fan is used to drive the airflow, the fan assembly 14 can simultaneously deliver the airflow through the first inlet 121 and the second inlet 131 into the air duct 12 and the heat-insulating channel 13, thereby improving the heat insulation effect and simplifying the structure of the hot air device.

[0047] The hot air device 1 of the embodiment of the present invention can utilize the airflow generated by the same fan to achieve the effect of generating high-temperature airflow and low-temperature airflow respectively when the airflow is discharged from the first outlet 122 and the second outlet 132, thereby achieving energy saving. Of course, the second inlet 131 and the air duct 12 can also be set in a form of being disconnected, or the fan assembly 14 can be set to supply air separately.

[0048] 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 airflow in the air duct 12 to the second inlet 131 of the heat insulation channel 13 located at the upper side. This can further simplify the structure of the hot air device, and after the structure is simplified, it can still ensure that the airflow stably leads to the heat insulation channel 13, thereby improving the performance of the hot air device.

[0049] In addition, when the heat insulation channel 13 is arranged on the side of the housing 11 with the wire hole 16, the second inlet 131 of the heat insulation channel 13 can be arranged downstream of the wire hole 16, so as to make room for the wire hole 16. At this time, the second inlet 131 cannot be directly opposite to the fan assembly 14, and most of the airflow passes through the heating assembly 15 to become high-temperature airflow, while the airflow passing through the gap between the heating assembly 15 and the wire hole 16 is less. Therefore, a guide structure 17 can be arranged upstream of the second inlet 131 to guide the airflow that has not passed through the heating assembly 15 to the second inlet 131 to enter the heat insulation channel 13. Among them, the guide structure 17 can be arranged upstream of the second inlet 131, and can be set as a triangular protrusion with a certain inclination angle, or it can be set as a section of the guide structure 17 extending from the second inlet 131, for example, the end of the second inlet 131 close to the heating assembly 15 is set to be flared, so as to facilitate the airflow to enter the second inlet 131.

[0050] Among them, the guide structure in the present invention can have different forms. For example, in a specific example of the present invention, the second inlet can be arranged on the side wall of the air duct, the guide structure can be constructed in the shape of a wind guide plate, the guide structure can be connected to the inner edge of the second inlet, and the guide structure can be inclined in shape extending toward the inside of the air duct and toward the first inlet, so that in the process of the airflow passing through the guide structure, the guide structure can smoothly guide the airflow toward the insulation channel, thereby improving the stability of air supply into the insulation channel.

[0051] In addition, in another example of the present invention, the second inlet is arranged on the side wall of the air duct, and the second inlet is opposite to the heating component, and there is a gap between the heating component and the side wall of the air duct, and the guide structure is constructed in the shape of an air guide protrusion, and the air guide protrusion is arranged on the side wall of the heating component, and the air guide protrusion is opposite to the second air inlet, and the air guide protrusion has a guide slope suitable for guiding the airflow toward the second inlet.

[0052] Of course, the guiding structure in the present invention may also have other forms, which will not be elaborated in the present invention.

[0053] In addition, the side wall of the housing in the present invention can be set as a double-layer structure, and the heat insulation channel can be constructed in the double-layer structure, so as to further simplify the structure of the housing.

[0054] like Figure 1 As shown, optionally, a wire hole 16 is provided on the housing 11, and the wire harness connected to the heating component 15 is led out from the wire hole 16. When the heat insulation channel 13 is arranged on the side of the housing 11 where the wire hole 16 is provided, the airflow enters from the first inlet 121, part of the airflow passes through the heating component 15, and part of the airflow passes through the gap between the heating component 15 and the wire hole 16. The second inlet 131 of the heat insulation channel 13 is located downstream of the wire hole 16 in the airflow direction in the air duct 12, and the second inlet 131 of the heat insulation channel 13 is connected to the air duct 12, so that the airflow passing between the heating component 15 and the wire hole 16 can enter the heat insulation channel 13 when it reaches the second inlet 131. The obstruction of the wire hole 16 to the air inlet of the heat insulation channel 13 is solved, thereby reducing the high temperature generated by the heating component 15 on the housing 11 when working, and avoiding the fire risk caused by the excessive temperature of the wire hole 16, thereby improving the safety of the hot air device 1.

[0055] like Figure 1-5 As shown, optionally, a heat insulation channel 13 can be set on both side walls of the air duct 12, wherein the second inlet 131 of the heat insulation channel 13 on the two side walls of the air duct 12 and the first inlet 121 of the air duct 12 are both opposite to the fan assembly 14, and the fluid generated by the fan assembly 14 can be directly diverted at the first inlet 121 and the second inlet 131.

[0056] In addition, when the heat insulation channels 13 are provided on both side walls of the air duct 12, the second inlets 131 of the heat insulation channels 13 on both sides of the air duct 12 can also be arranged at different positions, that is, one of the heat insulation channels 13 on both sides of the air duct 12 (see the attached Figure 1 The heat-insulating passage 13 located on the left side of the air duct 12 is flush with the first inlet 121 of the air duct 12, and the other (see attached Figure 1An insulating channel 13 located on the right side of the air duct 12 is opposite to the heating component 15 located in the air duct 12. At this time, a guide structure 17 can be provided in the air duct 12, and the guide structure 17 is configured to guide the airflow in the air duct 12 to the second inlet 131 of the insulating channel 13 located on the upper side.

[0057] In addition, when the heat insulation channel 13 is arranged on the side of the housing 11 with the wire hole 16, the second inlet 131 of the heat insulation channel 13 can be arranged downstream of the wire hole 16, so as to make room for the wire hole 16. At this time, the second inlet 131 cannot be directly opposite to the fan assembly 14, and most of the airflow passes through the heating assembly 15 to become high-temperature airflow, while the airflow passing through the gap between the heating assembly 15 and the wire hole 16 is less. Therefore, a guide structure 17 can be arranged upstream of the second inlet 131 to guide the airflow that has not passed through the heating assembly 15 to the second inlet 131 to enter the heat insulation channel 13. Among them, the guide structure 17 can be arranged upstream of the second inlet 131, and can be set as a triangular protrusion with a certain inclination angle, or it can be set as a section of the guide structure 17 extending from the second inlet 131, for example, the end of the second inlet 131 close to the heating assembly 15 is set to be flared, so as to facilitate the airflow to enter the second inlet 131.

[0058] Optionally, the first outlet 122 is flush with the second outlet 132 and faces the same direction, thereby increasing the area of ​​the air outlet. The instantaneous air output of the hot air device 1 is large, and the airflow discharged from the first outlet 122 and the second outlet 132 can directly enter the hot air outlet 21 to dry the tableware in the dishwasher 100, thereby improving the drying efficiency of the dishwasher 100.

[0059] In addition, a hot air outlet 21 is also provided on the housing 11, and the airflow entering the hot air device 1 will be sent out through the hot air outlet 21, wherein, in the airflow direction, the hot air outlet 21 is located downstream of the first outlet 122 and the second outlet 132. At this time, since 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, avoiding uneven temperature of the airflow entering and sent out through the hot air outlet 21, improving the uniformity of the airflow sent out through the hot air outlet 21, and saving materials. Furthermore, in order to improve the mixing of the airflows of the heat insulation channel 13 and the air duct 12, a gradually reduced size shrinking form can be provided at the hot air outlet 21, thereby promoting the mixing of the airflows of the heat insulation channel 13 and the air duct 12.

[0060] like Figure 2As shown, optionally, a heat-blocking insulation layer 18 is provided in the air duct 12, a heat-blocking air duct is formed in the heat-blocking insulation layer 18, the heating component 15 is provided in the heat-blocking air duct, and there is a gap between the heat-blocking insulation layer 18 and the outer shell 11, forming a heat-blocking channel. In other words, the interior of the hot air device 1 can be set to three layers, and the high-temperature airflow heated by the heating component 15 circulates in the heat-blocking air duct, and there is a gap between the heat-blocking insulation layer 18 and the side wall of the air duct 12, forming a heat-blocking channel, thereby blocking part of the heat and preserving the heat from being lost. The heat-insulating channel 13 provided on the side wall of the air duct 12 further blocks the heat through the circulating low-temperature airflow, thereby producing a double-channel double-layer barrier, which can achieve the effect of blocking the high temperature generated by the heating component 15 and improving the service life and safety of the hot air device 1. Among them, the heat-blocking insulation layer 18 can be made of sheet metal or other high-temperature resistant and heat-insulating materials, but the present invention is not limited to this.

[0061] Optionally, the heat-blocking layer 18 includes a first cover 181 and a second cover 182, which are buckled together to form a heat-blocking air duct. The first cover 181 and the second cover 182 can be buckled together by plugging and setting a snap, or they can be connected by setting connecting ears on the first cover 181 and the second cover 182 and fixing them with screws, etc., which is convenient for producing or replacing accessories. A fixing device 151 for positioning the heating component 15 is provided on one of the first cover 181 and the second cover 182, which is convenient for installing and removing the heating component 15. For example, square fixing modules are provided at both ends of the heating component 15, wherein six or four fixing modules can be provided at both ends, and the installation method can be interference fit, etc., to improve the stability of the heating component 15.

[0062] Optionally, a protrusion structure 20 is provided on the inner surface of the shell 11, and the protrusion structure 20 supports the thermal barrier layer 18 to separate the outer surface of the thermal barrier layer 18 from the inner surface of the shell 11 to form a certain distance. The protrusion structure 20 can be set as a long strip of protrusions, and a plurality of protrusion structures 20 can be provided. The protrusion structure 20 is between the inner surface of the shell 11 and the thermal barrier layer 18 to prevent the thermal barrier layer 18 from being damaged by excessive temperature. In addition, the protrusion structure 20 can be set as a double-sided support with the inner surface of the shell 11, or it can be a single-sided support. Of course, the protrusion structure 20 can also be set on the thermal barrier layer 18.

[0063] like Figure 5As shown, the dishwasher 100 according to the present invention comprises: a body 2, a hot air device 1, and a washing chamber 3 in the body 2 for washing dishes. The hot air device 1 is placed on the body 2 for generating hot air, and the hot air outlet 21 of the hot air device 1 is connected to the washing chamber 3 to dry the dishes, and the high-temperature steam generated after drying can be discharged from the water vapor outlet 4. During the drying process of the dishwasher 100, the heating component 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 component 15 to avoid damage caused by excessive temperature of the shell 11 of the hot air device 1, or the risk of fire, so as to improve the service life and safety of the hot air device 1 of the dishwasher 100.

[0064] like Figure 1 and Figure 2 As shown, the hot air device 1 includes: a shell 11, a fan assembly 14, and a heating assembly 15. An air duct 12 can be formed in the shell 11, the wall of the shell is constructed into a double-layer structure, and a heat insulation channel is constructed in the double-layer structure, and the shell 11 constructs the air duct 12. The air duct 12 can have a first inlet 121 and a first outlet 122, the first inlet 121 and the first outlet 122 are used to form an air flow channel, and the first inlet 121 is connected to the fan assembly 14. The second inlet is connected to the first inlet, and a part of the air flow entering the shell 11 through the first inlet will enter the air duct, and then flow to the first outlet through the air duct, and another part of the air flow entering the shell through the first inlet will enter the heat insulation channel through the second inlet. The heat insulation channel 13 can be arranged around the outside of the air duct 12. The heating assembly 15 can be placed in the air duct 12, that is, two air flow channels are formed inside the shell 11, wherein the heat insulation channel 13 is arranged on the periphery of the air duct 12 to prevent the shell 11 from being too hot. The fan assembly 14 can simultaneously deliver airflow to the air duct 12 and the heat-insulating channel 13. After the airflow enters from the first inlet 121, it is heated by the heating assembly 15 in the air duct 12 and becomes high-temperature gas. The airflow enters the heat-insulating channel 13 from the second inlet 131 and is directly discharged from the second outlet 132 along the airflow channel. Therefore, the heat-insulating channel 13 delivers relatively low-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 outside the housing 11, reducing the heat loss in the air duct 12, and can block the high temperature generated by the heating assembly 15, thereby improving the service life and safety of the hot air device 1.

[0065] Among them, since a heating component 15 is arranged in the air duct, when the heating component 15 has a wiring harness for power supply, communication, etc., a wiring harness guiding structure needs to be arranged, and the wiring harness guiding structure needs to pass through the outer shell for connecting the controller, etc. Therefore, the wiring harness guiding structure may affect the heat insulation channel. Therefore, in the present invention, the second inlet of the heat insulation channel is arranged upstream of the heating component. However, at the location of the wiring harness guiding structure, the part of the second inlet located therein needs to be arranged downstream of the wiring harness guiding structure to avoid the heat insulation channel being cut off by the wiring harness with a computer structure. That is to say, a part of the second inlet in the present invention is arranged upstream of the heating component, and the other part is arranged downstream of the wiring harness guiding structure (or downstream of the wiring hole, or opposite to the heating component), etc. Figure 1 As shown, the portion of the second inlet located upstream of the heating component can be directly opposite to the fan component, that is, the portion of the first inlet located upstream of the heating component is consistent with the airflow direction, but the portion located downstream of the guide structure has an angle with the flow direction of the airflow (for example, perpendicular to each other). Therefore, a guide structure is required to guide the airflow so that the airflow can more easily enter the insulation channel. Therefore, a guide structure can be set in the air duct, on the heating component or other positions to achieve guiding of the airflow.

[0066] Therefore, part of the airflow generated by the fan assembly 14 enters the air duct 12. Since a heating assembly is provided in the air duct 12, the airflow entering the air duct 12 will exchange heat with the heating assembly and then flow to the first outlet, that is, the airflow flows through the heating assembly 15 in the air duct 12, and the airflow is heated by the heating assembly 15 to become a high-temperature airflow, and is discharged from the first outlet 122; another part of the airflow enters the heat-insulating channel 13 from the second inlet 131. Since the heat-insulating channel 13 is provided around the outside of the air duct 12, the airflow in the heat-insulating channel 13 is separated from the air duct 12, so the heating assembly cannot directly heat the airflow in the heat-insulating channel 13. In other words, the heating assembly is separated from the heat-insulating channel 13. The airflow in the heat-insulating channel 13 cannot be directly heated by the heating assembly 15 placed in the air duct 12. Thus, the relatively low-temperature airflow is transmitted through the heat-insulating channel 13. A barrier is formed, and the heat in the air duct is difficult to directly exchange heat with the external environment of the hot air device, which effectively reduces the heat exchange efficiency and improves energy utilization. At the same time, since the air flow temperature in the insulation channel 13 is relatively low, the heat exchange rate between the air flow in the insulation channel 13 and the external environment can also be reduced.

[0067] In addition, if Figure 1 The first outlet and the second outlet can be arranged to be flush with each other, so that during the airflow circulation process, the airflow sent out of the first outlet and the airflow sent out of the second outlet will be mixed, thereby reducing the impact on the airflow temperature and increasing the air supply temperature.

[0068] 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 internal space of the first part and the internal space of the second part are connected, and the internal space of the first part and the internal space of the second part construct an L-shaped air duct. A mounting plate can be arranged between the first part and the second part, and the mounting plate is respectively connected to the first part and the second part, so as to improve the structural strength of the housing 11. The heating component 15 can be arranged in the first part, one end of the first part is connected to the air flow driving device, and the air flow in the air duct is driven by the air flow driving device, wherein the heating component 15 is arranged in the air duct and close to the air flow 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. Among them, 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 is excessive at the connection between the first part and the second part.

[0069] In addition, a heat-blocking layer 18 is also provided in the shell 11 of the present invention, and the heat-blocking layer is used to improve safety and stability, improve energy utilization, and save energy and protect the environment. Specifically, a heat-blocking layer 18 can be provided in the air duct 12, and a heat-blocking air duct can be formed in the heat-blocking layer 18. The heating component 15 can be provided in the heat-blocking air duct, and there can be a gap between the heat-blocking layer 18 and the shell 11 to form a heat-blocking channel. In other words, the interior of the hot air device 1 can be provided with three layers, and the high-temperature airflow heated by the heating component 15 can flow in the heat-blocking air duct. The heat-blocking layer 18 can have a gap with the side wall of the air duct 12 to form a heat-blocking channel, thereby blocking a part of the heat and preserving the heat without dissipating it. The heat-insulating channel 13 provided on the side wall of the air duct 12 can further block the heat through the circulating low-temperature airflow, thereby generating a double-channel double-layer barrier, which can achieve the effect of blocking the high temperature generated by the heating component 15 and improving the service life and safety of the hot air device 1. Among them, the thermal barrier layer 18 can be made of sheet metal or other high-temperature resistant and heat-insulating materials, but the present invention is not limited thereto. Optionally, the thermal barrier layer 18 may include a first cover body 181 and a second cover body 182. The first cover body 181 and the second cover body 182 may be buckled together to form a thermal barrier air duct. The first cover body 181 and the second cover body 182 may be buckled together by plugging and setting a snap-on method, or the first cover body 181 and the second cover body 182 may be provided with connecting ears and connected by screws, etc., which is convenient for the production or replacement of accessories. A fixing device 151 for positioning the heating component 15 is provided on one of the first cover body 181 and the second cover body 182 to facilitate the installation and removal of the heating component 15. For example, square fixing modules are provided at both ends of the heating component 15, wherein six or four fixing modules may be provided at both ends, and the installation method may be interference fit or the like to improve the stability of the heating component 15. In addition, if Figure 1and Figure 2 As shown, a protruding structure 20 can be provided on the inner surface of the shell 11. The protruding structure 20 can support the thermal barrier layer 18 and separate the outer surface of the thermal barrier layer 18 from the inner surface of the shell 11 to form a certain distance. The protruding structure 20 can be provided as a long strip of protruding blocks, and a plurality of protruding structures 20 can be provided. The protruding structure 20 can be between the inner surface of the shell 11 and the thermal barrier layer 18 to prevent the thermal barrier layer 18 from being damaged by excessive temperature and thus causing damage to the shell 11. In addition, the protruding structure 20 can be provided with a double-sided support on the inner surface of the shell 11, or it can be provided with a single-sided support. Of course, the protruding structure 20 can also be provided on the thermal barrier layer 18.

[0070] like Figure 3 and Figure 4 Two different guide configurations are shown.

[0071] In addition, the heating component 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 sequence from the outside to the inside, and there is a gap between the outer shell 11 and the protective shell suitable for airflow, and there is a gap between the protective shell and the heating component 15 suitable for airflow. By setting the gap, while promoting airflow, the thermal insulation performance between the protective shell and the heating component 15, and between the outer shell 11 and the protective shell can be improved to reduce heat transfer and improve energy utilization. Among them, a first protrusion protruding inwardly can be set on the outer shell 11, and the protective shell is supported by the first protrusion so that a gap is constructed between the outer shell 11 and the protective shell. A second protrusion protruding inwardly can be set on the protective shell, and the second protrusion supports and protects the heating component 15, so that a gap is constructed between the protective shell and the heating component 15. Among them, the outer shell 11 includes a first shell and a second shell, the first shell and the second shell are buckled together to form an air duct, the inner bottom surface of the first shell and the inner bottom surface of the second shell are both provided with a plurality of first protrusions arranged at intervals, the protective shell includes a first protective cover and a second protective cover, the heating component 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 inner bottom surface of the second protective cover are both provided with second protrusions.

[0072] The housing 11 includes a first shell and a second shell. The first shell includes a first bottom plate and first side plates arranged on both sides of the first bottom plate, and the second shell includes a second bottom plate and second side plates arranged on both sides of the second bottom plate. The two first side plates and the two second side plates are respectively connected to form an air duct between the first shell and the second shell, wherein a protrusion is provided on the outer surface of the first side plate, and a recessed structure is formed between the protrusion and the edge of the first side plate; the inner side of the end of the second side plate is configured as a notch, the end edge of the first side plate is embedded in the notch, and the unit of the second side plate is embedded in the recess, so as to realize the snap fit between the first shell and the second shell. Figure 4 and Figure 5 The structures of the first shell and the second shell are shown respectively.

[0073] The protective shell may include a first protective cover and a second protective cover, and the first protective cover and the second protective cover may be buckled with each other to jointly define an installation cavity. The heating assembly 15 is arranged in the installation cavity. Among them, the heating assembly 15 includes stacked heating elements and heat sinks, and the heating elements may be heating elements such as heating tubes. Optionally, the outer shell 11 of the hot air device also has limiting ribs, and the limiting ribs are arranged on both sides of the protective shell. A part of the limiting ribs is embedded in the protective shell, which plays the role of positioning the protective shell, and can facilitate the installer to quickly install the heating assembly 15 and improve the stability of the heating assembly 15. Multiple limiting ribs can be arranged on both sides of the protective shell to further improve the stability of the installation; the limiting ribs can be arranged as a strip structure arranged along the air flow direction to prevent it from obstructing the air flow. The limiting ribs on the side of the protective shell close to the air inlet can be arranged as an integral structure with the two blocking ribs, and the limiting ribs are extended in the direction of the blocking ribs away from the air inlet. The two limiting ribs are parallel to each other, which simplifies the structure and strengthens the structural strength. In addition, the protective shell has a connection structure, which extends out of the outer shell 11. The connection structure can be used to connect electrical components (such as grounding), or to improve the positioning stability of the heating component 15.

[0074] Furthermore, positioning rib groups are provided at both opposite ends of the protective shell along the airflow direction, and the heating component 15 is positioned between the positioning rib groups at both ends of the protective shell. The positioning rib group includes at least one positioning rib. By providing the positioning rib group to position the heating component 15, the heating component 15 can be fixed to prevent the heating component 15 from shaking. At the same time, because the positioning rib group is used to fix the heating component 15, when the heating component 15 is damaged and needs to be disassembled and replaced, it can be easily disassembled and assembled. Furthermore, the positioning rib can be set in the shape of a flat sheet, for example, the positioning rib is set in the shape of a flat sheet parallel to the airflow direction. In this way, 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 circulation efficiency and effect of the airflow can be improved. Optionally, the positioning rib group includes a plurality of positioning ribs, and the plurality of positioning ribs in the positioning rib group are arranged on opposite sides of the protective shell along the thickness direction, and the two sides of the protective shell along the width direction of the protective shell are provided with positioning ribs on either side of the two sides of the protective shell along the thickness direction, and the plurality of positioning ribs in the positioning rib group extend toward the center of the protective shell, thereby making the connection between the heating component 15 and the protective shell more stable, and further reducing the possibility of shaking of the heating component 15. Optionally, the positioning rib group includes four positioning ribs, which are arranged in a generally 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, three or other number of positioning ribs, thereby effectively improving the positioning effect of the heating component 15. Optionally, the positioning ribs are stamped on the protective shell, and the positioning ribs are configured in the shape of spring sheets, and such a setting can simplify the processing process and reduce the production cost. Specifically, a part of the protective shell is stamped toward the inside of the protective shell, and after the stamping 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.

[0075] Optionally, the first cover body has two end edges along the length direction provided with first flanges bent toward the second cover body, and the second cover body has two end edges along the length direction provided with second flanges bent toward the first cover body, and the first cover body and the second cover body are fastened together by the cooperation of the first flange and the second flange.

[0076] The heating assembly 15 may include a heating element and a heat sink, wherein the heating element and the heat sink are arranged on the inner side of the protective shell, wherein the heat sink is attached to the heating element (or may be spaced apart), thereby improving the heat dissipation efficiency and facilitating heating of the airflow passing through the heat sink and the heating element.

[0077] like Figure 5 In the present invention, 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 air circulation, thereby achieving the effect of hot air drying. In addition, the present invention can also adopt other methods to dissipate heat.

[0078] For example, the present invention also provides a door opening device for a dishwasher, which includes a base, a door pushing member, an elastic member and a driving member.

[0079] Specifically, the door pusher is movably arranged on the base body relative to the base body. In other words, the door pusher is arranged on the base body and is movable relative to the base body. The door pusher can open the door by moving. One end of the elastic member abuts against the door pusher, and the elastic member can provide a thrust to the door pusher, thereby driving the door pusher to open the door, and the damping effect of the elastic member can maintain the open state of the door body. The driving member abuts against the other end of the elastic member, and the driving member is configured to be suitable for pressing the other end of the elastic member. The driving member can compress the elastic member to cause the elastic member to undergo elastic deformation. At this time, the elastic member will provide an elastic force to the door pusher, thereby driving the door pusher to move for opening the door.

[0080] For example, in a dishwasher with the door opening device, when the temperature inside the dishwasher reaches a certain level during the drying stage, the door can be driven to open by the door opening device. Specifically, the door opening device presses the elastic member through the driving member, and the elastic member is compressed under the driving action of the driving member, thereby providing a thrust to the door push member through the elastic member. When the pressure provided by the elastic member to the door push member reaches the force required to open the door, the door can be opened to a certain angle. At this time, the moisture inside the inner tank is discharged, thereby improving the drying effect of the tableware. In addition, since an elastic member is provided between the driving member and the door push member, when the door is opened, if the driving member is reset, the elastic member will still provide a certain thrust to the door push member, thereby maintaining the open state of the door.

[0081] According to the door opening device of the dishwasher of the present invention, an elastic member is provided. After the door body is opened, the elastic deformation of the elastic member can support the door pushing member, so that the door pushing member has a certain thrust, thereby prompting the door body of the dishwasher to maintain an open state.

[0082] Among them, during the drying process, when the door body is maintained in an open state by the elastic deformation of the elastic member, it can be ensured that the airflow in the dishwasher is discharged through the gap in the door body, thereby realizing the discharge of high-temperature moisture in the dishwasher and improving the drying efficiency in the dishwasher.

[0083] Optionally, the seat body in the present invention may include a base and a protective cover, a cavity is defined between the base and the protective cover to accommodate the driving member and the elastic member, and the protective cover and the base may be connected by snapping, specifically, a hook is provided on the protective cover, and a buckle is provided on the base, and the hook on the protective cover snaps with the buckle on the base to realize the connection between the protective cover and the base, wherein a plurality of hooks may be arranged on the protective cover at intervals along the circumferential direction, and buckles corresponding to the plurality of hooks are provided on the base.

[0084] In addition, the base body may be provided with a connection ear, which may be fixed to the top of the inner tank of the dishwasher by means of a connection ear screw, so that the accessories can be easily disassembled or replaced. In addition, the connection ear may be provided on the protective cover, and the base is provided between the protective cover and the inner tank, so that the stability of the connection between the protective cover and the inner tank can be improved in the process of connecting the inner tank by means of the connection ear.

[0085] In some embodiments of the present invention, the driving member includes a transmission part and a driving member. The transmission part is rotatably arranged on the seat body, and the transmission part abuts the other end of the elastic member. The driving member is configured to drive the transmission part to rotate so that the transmission part presses the other end of the elastic member. During use, the driving member drives the transmission part to rotate. Since the transmission part abuts the elastic member, the transmission part presses the elastic member when rotating. This facilitates the arrangement of various components of the driving member. The driving member is connected to the elastic member by the transmission part, so that the driving force is transmitted to the elastic member. In addition, the rotation of the transmission part on the seat body will be hindered by the seat body, that is, the rotation of the transmission part has a certain damping. After the driving member drives the transmission part to compress the elastic member, if the driving member is reset, since the reset of the transmission part has a certain damping, the reset of the transmission part can be limited, thereby continuing to provide a certain pressure against the elastic member.

[0086] In addition, when the driving part is in a non-working state, that is, when the driving part does not apply a pressing force to the transmission part, the driving part and the transmission part may be in contact or not in contact.

[0087] In addition, in the present invention, only a driving part may be provided without a transmission part, and the driving part is in direct contact with the elastic contact; of course, the transmission part may also be in the form of sliding along a predetermined track.

[0088] Furthermore, the driving part abuts against the transmission part to drive the transmission part to rotate, and the distance between the position of the transmission part abutting against the elastic member and the hinge position of the transmission part is greater than the distance between the position of the transmission part abutting against the driving part and the hinge position of the transmission part. In other words, the transmission part is configured in the form of a lever, and the length of the power arm of the lever structure is less than the length of the resistance arm. In this way, when the driving part provides a smaller displacement, the position on the transmission part connected to the elastic member will have a larger displacement through the amplification of the lever structure, which can facilitate the rapid response of the door opening device. In addition, the structure of the driving member is simple and convenient for maintenance.

[0089] Optionally, the transmission part can be a rotating rod with a rotating center axis on the rotating rod, and the distance between the rotating center axis and the elastic member is greater than the distance between the rotating center axis and the driving member, thereby achieving the effect of saving space and increasing the driving force.

[0090] Optionally, one end of the transmission part abuts against the elastic member, and the other end of the transmission part abuts against the driving part, and the hinged position of the transmission part and the seat body is located between the two ends of the transmission part, which can facilitate the arrangement of various components and improve space utilization.

[0091] Of course, the position on the transmission part connected to the driving part and the position on the transmission part connected to the elastic member may also be located on the same side of the rotation center axis of the transmission part.

[0092] Optionally, the seat body is provided with ribs, the ribs are arc-shaped with the rotation center axis of the transmission part as the center, the ribs include a plurality of ribs arranged at intervals in a direction away from the rotation center axis of the transmission part, and the transmission part is rotatably supported on the ribs. The ribs are centered on the center axis of the rotating rod and spread outward at a certain radius to stabilize the driving trajectory of the rotating rod and evenly transmit the driving force.

[0093] In addition, the ribs can also provide damping for the transmission part, so that after the door pusher pushes the door open, it can provide a certain damping for the resetting of the elastic part to maintain the door open state of the dishwasher. Of course, the ribs are mainly used to stabilize the rotation of the transmission part, prompting the transmission part to rotate along a predetermined trajectory and reducing the shaking of the transmission part during rotation.

[0094] Optionally, the driving part is a motor adapted to drive the transmission part to rotate after the temperature is higher than a predetermined value. That is, the driving part will drive the transmission part to rotate only after the temperature is higher than a predetermined value. Specifically, the motor can be a wax motor, which drives the transmission part to rotate by storing heat in the inner tank, and resets after cooling.

[0095] When the door opening device is applied to the dishwasher, the door opening device will push open the door body only when the temperature inside the dishwasher reaches a predetermined value, thereby facilitating rapid heating of the dishwasher and avoiding heat leakage during the heating process in the dishwasher. After the temperature inside the dishwasher reaches the predetermined value, the moisture in the dishwasher evaporates into the air inside the dishwasher, thereby dispersing the water droplets condensed on the inner wall of the dishwasher into the air. At this time, the door body can be quickly driven to open by a temperature-controlled motor to discharge the high-temperature moisture in the dishwasher to facilitate rapid drying of the dishwasher.

[0096] Optionally, the door pusher is in the shape of a rod, and a mounting hole is provided on the seat body, a part of the door pusher passes through the mounting hole and extends out of the seat body, and another part of the door pusher is confined in the seat body. By providing the mounting hole and setting the door pusher rod to different thicknesses, the pusher rod can move within a limited range, maintain the opening angle of the door body and prevent it from popping out.

[0097] Optionally, the elastic member may be a spring, and the spring may be sleeved on the door-pushing member.

[0098] The present embodiment provides a dishwasher, comprising: a machine body, a door body and a door opening device, wherein the machine body has a washing cavity; the door body is connected to the machine body to open and close the washing cavity; the door opening device is arranged on at least one of the machine body and the door body, and the door opening device is the door opening device of the dishwasher according to the above embodiment, and is configured to drive the door body to open a predetermined angle.

[0099] The machine body is used for washing, rinsing and drying dishes. The door body is used for opening or closing the washing chamber. The door opening device can open the door body and maintain it at a predetermined angle. For example, after the dishwasher washes the dishes in the washing chamber, in order to speed up the drying of the dishes, the water will be heated to evaporate the residual water on the dishes. At this time, the temperature-controlled motor in the door opening device drives the door body to open and discharge the high-temperature moisture in the washing chamber.

[0100] According to the dishwasher of the embodiment of the present invention, since the door opening device described in the above embodiment is provided, the door body can be opened by the door opening device and is suitable for maintaining the open state of the door body. During the drying process, the high-humidity gas in the dishwasher can be quickly discharged, thereby achieving faster drying in the dishwasher.

[0101] Optionally, the door opening device is configured such that when the door is opened to a predetermined angle, the elastic member maintains the door in an open state. That is, after the elastic member presses against the door-pushing rod to open the door, the thrust exerted by the elastic member pushes the door to a predetermined angle, and the elastic deformation of the elastic member can also support the door-pushing member to maintain the pushed-out state, thereby achieving continuous opening of the door.

[0102] Specifically, in combination with the aforementioned embodiment, after the door opening and closing device is opened, if the driving member is reset, the elastic member between the driving member and the door pushing member will still provide a certain elastic force to the door pushing member. Therefore, even if the driving member is reset, it can still provide a certain thrust to the door body to keep the door body open.

[0103] Optionally, the door body is hinged to the machine body, and a magnetic attraction structure is provided between the door body and the machine body. Optionally, one end of the door body is hinged to the machine body, and a magnetic attraction structure is provided between the other end of the door body and the corresponding end of the machine body, and the door opening device is provided on the machine body and is suitable for pushing the other end of the door body to open the door, wherein the door opening device is configured to apply a thrust not greater than the magnetic attraction between the door body and the machine body to the door body when the door body is closed, and to apply a thrust not less than the magnetic attraction between the door body and the machine body to the door body when the door body is opened at a predetermined angle and the driving member is reset. In other words, the door body and the upper end of the machine body are opened and closed by magnetic attraction, and only a small force is required to close the door tightly when closing the door body, thereby improving the sealing property of the machine body. When the driving member of the door opening device is working, the pressure applied to the door push member overcomes the magnetic attraction between the door body and the machine body, and after the driving member is reset, the force of the elastic deformation of the elastic member overcomes the magnetic attraction between the door body and the machine body. Thus, a balanced state is achieved to maintain the effect of opening the door body.

[0104] Specifically, when the door body is in a closed state, the magnetic attraction between the door body and the machine body will ensure that the door body is closed, and at this time, the magnetic attraction is large enough, so that even if the elastic member provides an elastic thrust between the door body and the machine body, as long as the elastic thrust is less than a predetermined value, the door body can be kept closed. When the door body is opened, the magnetic attraction between the door body and the machine body decreases, so that even if the driving member is reset and the elastic force of the elastic member is reduced, the door body can be kept open.

[0105] In addition, a door magnet may be provided on the door body, and a magnet may be provided on the machine body, and the cooperation between the magnet and the door magnet may realize magnetic attraction between the door body and the machine body when the door body is closed.

[0106] Of course, in the present invention, stable closing between the door body and the machine body can also be achieved by other methods, and other door closing structures in the prior art can also be used in the present invention.

[0107] Optionally, a sealing ring may be provided on the machine body or the door body to seal the door and the inner tank to prevent leakage of water or steam.

[0108] Optionally, a door lock for detecting door opening may be provided on the top of the inner tank.

[0109] During the washing process of the dishwasher, the door body can be ensured to be in a closed state by the door lock, and during the drying process, the door lock is opened so that the door opening device can push the door body open.

[0110] Optionally, the lower end of the door body is hinged to the machine body, and the upper end of the door body is detachably connected to the machine body, and the top of the door body is tilted toward the machine body when the door body closes the washing chamber. Thus, the machine body can be opened by opening the upper end of the door body, and the washing chamber can be closed when the door body is closed. When the door body is closed, the top is tilted toward the machine body, so that the door body generates a component force of gravity when it is closed. The component force generated by the top of the door body tilting toward the machine body prevents the door body from sliding down when closing the door, and the thrust of the door opening device when opening the door is greater than the sum of the magnetic attraction and the component force of gravity generated by the tilt of the door body, so that the door body is stably opened.

[0111] In some embodiments of the present invention, the dishwasher further comprises a door balancing mechanism, which is respectively connected to the door body and the machine body to provide damping for the opening of the door body. The door balancing mechanism may comprise a tension spring, a pull rope, a pulley and a connecting portion, one end of the tension spring is connected to the machine body, one end of the pull rope is connected to the other end of the tension spring, the connecting portion is connected to the other end of the pull rope, and the pull rope is passed around the pulley, wherein the connecting portion is connected to the door body, the connecting portion extends downward and toward the machine body and the end portion is connected to the pull rope, and the connection between the connecting portion and the pull rope deviates from the pivot axis of the door body, at least a portion of the pulley is lower than the connecting portion, and the pull rope is passed around the lower side of the pulley. Thus, after the door opening device opens the door body, the door balancing mechanism will provide a certain damping to the door body to hinder the opening of the door body, thereby balancing the door body and maintaining the state of the door body.

[0112] According to an embodiment of the present invention, a dishwasher comprises an inner tank and an air inlet device, wherein the air inlet device is connected to the inner tank to ventilate the inner tank. In the drying stage, the dishwasher generates a flow of wind in the inner tank through the air inlet device, and uses an exhaust fan to discharge high-temperature moisture to achieve the effect of drying dishes.

[0113] In the description of the present invention, it is necessary to understand that the orientations or positional relationships indicated by terms such as “upper”, “lower”, “front”, “rear”, “left”, “right”, “inner”, “outer”, and “circumferential” are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0114] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0115] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0116] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0117] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A hot air device for a dishwasher, characterized in that: include: A shell, wherein an air duct and a heat-insulating channel are formed in the shell, the air duct has a first inlet and a first outlet, the heat-insulating channel has a second inlet and a second outlet, the heat-insulating channel is arranged around the outside of the air duct, and the heat-insulating channel and the air duct extend in the same direction; a fan assembly, the fan assembly being used to drive airflow from the first inlet to the first outlet and to drive airflow from the second inlet to the second outlet; A heating component, wherein the heating component is placed in the air duct; The side wall of the shell is a double-layer structure, and the heat insulation channel is constructed in the double-layer structure; A heat-blocking layer is arranged in the air duct, a heat-blocking air duct is formed in the heat-blocking layer, the heating component is arranged in the heat-blocking air duct, and a gap is formed between the heat-blocking layer and the shell.

2. The hot air device of the dishwasher according to claim 1, characterized in that: The second inlet is in communication with the air duct, and the second inlet is located downstream of the first inlet, and the fan assembly is connected to the first inlet.

3. The hot air device of the dishwasher according to claim 2, characterized in that: 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.

4. The hot air device of the dishwasher according to claim 3, characterized in that: The second inlet is arranged on the side wall of the air duct, the guide structure is configured in the shape of an air guide plate connected to the inner edge of the second inlet, and the guide structure extends obliquely toward the inside of the air duct and toward the first inlet.

5. The hot air device of the dishwasher according to claim 3, characterized in that: The second inlet is arranged on the side wall of the air duct, and the second inlet is opposite to the heating component, and there is a gap between the heating component and the side wall of the air duct, the guide structure is constructed in the shape of an air guide protrusion, and the air guide protrusion is arranged on the side wall of the heating component, and the air guide protrusion is opposite to the second air inlet, and the air guide protrusion has a guiding inclined surface suitable for guiding the airflow toward the second inlet.

6. The hot air device of the dishwasher according to claim 1, characterized in that: The second inlet of the heat-insulating channel is in communication with the air duct, and the second inlet is located upstream of the heating component or opposite to the heating component in the air flow direction in the air duct.

7. The hot air device of the dishwasher according to claim 1, characterized in that: The shell is provided with a wire hole, and the wire harness connected to the heating component is led out from the wire hole. The second inlet of the heat insulation channel is connected to the air duct, and the second inlet is located downstream of the wire hole in the air flow direction in the air duct.

8. The hot air device of the dishwasher according to claim 1, characterized in that: The first outlet is flush with the second outlet and faces the same direction.

9. The hot air device of the dishwasher according to claim 1, characterized in that: The heat-blocking layer comprises a first cover body and a second cover body, wherein the first cover body and the second cover body are buckled together to form the heat-blocking air duct, and a fixing device for positioning the heating component is provided on one of the first cover body and the second cover body.

10. The hot air device of the dishwasher according to claim 1, characterized in that: A protrusion structure is provided on the inner surface of the shell, and the protrusion structure supports the thermal barrier layer to separate the outer surface of the thermal barrier layer from the inner surface of the shell.

11. A dishwasher, characterized in that: include: A machine body, wherein the machine body has a washing chamber; A hot air device, wherein the hot air device is placed on the machine body, and the hot air device is the hot air device according to any one of claims 1 to 10, and an outlet of the hot air device is connected to the washing chamber.

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