Door assembly of a dishwasher, dishwasher and control method thereof

Abstract

The application relates to the technical field of household appliance control, and discloses a door body assembly of a dish washing machine, the dish washing machine and a control method thereof. The door body assembly comprises a door body and a perspective window arranged on the door body. The perspective window comprises a transparent inner window, a transparent outer window and an infrared absorption structure. The transparent outer window is arranged outside the transparent inner window and forms a closed cavity with the transparent inner window. The infrared absorption structure is arranged on the transparent outer window and is suitable for absorbing infrared radiation generated in the dish washing machine during operation to heat the transparent outer window. The infrared absorption structure is arranged to absorb infrared radiation emitted from the inside of the dish washing machine during operation to heat the transparent outer window, thereby increasing the temperature of the transparent outer window, reducing the temperature difference between the inner window and the outer window, preventing the transparent outer window from condensing, eliminating or weakening the problem that the perspective window is prone to fogging and frosting during operation of the dish washing machine, and improving user experience.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of household appliance control, in particular to a door body assembly of a dishwasher, a dishwasher and a control method thereof. BACKGROUND

[0002] The dishwasher is a device for automatically cleaning bowls, chopsticks, plates, dishes, knives and forks, etc. It reduces the labor intensity of people in cleaning tableware and improves work efficiency, and is used by more and more families. Most of the existing dishwashers have a perspective window, through which the user can observe the movement and progress of the cleaning of tableware in the dishwasher, improving the user's participation and experience.

[0003] However, during use, the inside of the dishwasher is in a humid environment, and the window of the perspective window is easy to fog and frost, affecting the visibility of the perspective window, and the inside of the perspective window is easy to grow mold and algae for a long time, which is not sanitary and seriously affects the user experience. SUMMARY

[0004] Therefore, the present application provides a door body assembly of a dishwasher, a dishwasher and a control method thereof to solve the problem that the perspective window of the dishwasher is easy to fog and frost during operation.

[0005] In a first aspect, the present application provides a door body assembly of a dishwasher, which comprises a door body and a perspective window arranged on the door body, the perspective window comprising a transparent inner window, a transparent outer window and an infrared absorbing structure, wherein the transparent outer window is arranged outside the transparent inner window and forms a closed cavity with the transparent inner window; the infrared absorbing structure is arranged on the transparent outer window and is adapted to absorb the infrared radiation generated inside the dishwasher during operation to heat the transparent outer window.

[0006] Beneficial effects: The infrared absorbing structure is arranged to absorb the infrared radiation emitted inside the dishwasher during operation to heat the transparent outer window, thereby increasing the temperature of the transparent outer window and reducing the temperature difference between the transparent outer window and the transparent inner window, preventing the outer window from condensing under extreme conditions such as low temperature outside, thereby eliminating or reducing the problem that the perspective window of the dishwasher is easy to fog and frost during operation, and improving the user experience. Therefore, the problem that the perspective window of the existing dishwasher is easy to fog and frost during operation can be effectively solved.

[0007] In an optional embodiment, the infrared absorbing structure is an infrared absorbing coating arranged on the surface of the transparent outer window.

[0008] Beneficial effects: By adopting the infrared absorption coating as the infrared absorption structure to absorb the infrared radiation inside the inner container, no additional installation space is needed for the infrared absorption structure on the transparent window or the transparent outer window, the forming process is simple, easy to use and promote, and the transparent outer window can improve the aesthetics and appearance while ensuring the original light transmission and visual effect of the transparent outer window. In addition, the infrared absorption structure made by coating is uniform and has strong adhesion and is not easy to fall off, which can uniformly heat the entire transparent outer window and avoid uneven temperature distribution and local condensation of the transparent outer window.

[0009] In an alternative embodiment, the infrared absorption coating is adapted to absorb infrared light of 0.7-500 μm.

[0010] Beneficial effects: By limiting the wavelength of the infrared light absorbed by the infrared absorption coating within the above range, the infrared light radiated outward from the inner container, tableware and other components can be fully and efficiently absorbed.

[0011] In an alternative embodiment, the infrared absorption coating is provided on the inner surface of the transparent outer window; or the infrared absorption coating is provided on the inner and outer surfaces of the transparent outer window.

[0012] Beneficial effects: By providing the infrared absorption coating on the inner side of the transparent outer window, or on both the inner and outer sides, the problem of short service life and affecting the anti-fogging effect of the transparent window due to the wear and tear of the infrared absorption coating on the outer side of the transparent outer window can be effectively avoided.

[0013] In an alternative embodiment, the door assembly further comprises an infrared irradiation device adapted to emit infrared light to the transparent outer window to assist in heating the transparent outer window.

[0014] Beneficial effects: By providing the infrared irradiation device, in the case of extremely low external temperature or the need for rapid defrosting, the infrared irradiation device can be started to emit a large amount of infrared light to the transparent outer window, thereby increasing the absorption of infrared light by the infrared absorption structure of the transparent outer window, rapidly increasing the temperature of the transparent outer window, achieving rapid defrosting and effectively preventing the transparent outer window from condensing and fogging.

[0015] In an alternative embodiment, the infrared irradiation device comprises an infrared lamp.

[0016] Beneficial effects: the infrared irradiation device adopts infrared lamps, which is simple in structure, low in cost and easy to use and popularize. When the external temperature is too low or rapid defogging is needed, the infrared light can be turned on to irradiate a large amount of infrared rays to the transparent outer window, thereby increasing the temperature of the transparent outer window, further reducing the temperature difference between the transparent inner window and the transparent outer window, and more effectively preventing the transparent outer window from condensing. The phenomenon of fogging on the transparent outer window can be effectively avoided in extreme conditions such as low external temperature. If the amount of infrared light absorbed by the infrared absorption structure is insufficient, the transparent outer window will still fog.

[0017] In an alternative embodiment, the door body assembly further comprises a window body support for mounting and fixing the transparent inner window and the transparent outer window, and the infrared lamp is detachably mounted on the window body support.

[0018] Beneficial effects: by detachably mounting the infrared lamp on the window body support, the disassembly and maintenance of the infrared lamp are facilitated.

[0019] In an alternative embodiment, the window body support comprises a frame body, a perspective window is formed in the middle of the frame body, and the transparent inner window is mounted in the perspective window. An outer window mounting portion is further provided on one side of the frame body close to the transparent outer window, the outer periphery of the transparent outer window is provided with a flange structure adapted to be clamped into the outer window mounting portion, and the infrared lamp is arranged on the outer periphery side of the flange structure.

[0020] Beneficial effects: by arranging the infrared lamp on the outer periphery side of the flange structure of the transparent outer window, the infrared lamp can be installed hiddenly, and the appearance is better.

[0021] In a second aspect, the present application also provides a dishwasher comprising an inner container and the door body assembly of any of the above embodiments, wherein the transparent inner window is located on the side close to the inner cavity of the inner container, and the transparent outer window is located on the side away from the inner cavity of the inner container.

[0022] Beneficial effects: when the dishwasher is working, the water temperature in the inner container can reach 70-80℃, and the humidity is 99% RH. The transparent inner window of the inner layer is high in temperature due to being washed by hot water, while the transparent outer window of the outer layer is the same as the room temperature, resulting in a large temperature difference. The inner and outer window layers are prone to air leakage due to thermal expansion and cold contraction, causing steam to easily leak into the closed cavity inside the window body, and condensing on the transparent outer window, resulting in fogging on the transparent outer window. Since a large amount of infrared radiation is generated when tableware and the dishwasher body are washed at high temperature, the transparent outer window is provided with an infrared absorption coating film, so that the infrared radiation emitted by the tableware and the like passes through the transparent inner window of the inner layer and is absorbed by the transparent outer window of the outer layer, so that the transparent outer window of the outer layer can also be heated, reducing the temperature difference between the inner and outer layers of the window body, and preventing condensation

[0023] In a third aspect, the present application further provides a control method of a dishwasher, the dishwasher comprising a tub and the door assembly described above, the control method comprising: receiving a dishwasher starting signal; obtaining a current indoor temperature T1, and controlling the infrared irradiation device to start when it is determined that the current indoor temperature T1 is lower than a preset temperature T0.

[0024] Beneficial effects: The current indoor temperature T1 is detected before the dishwasher starts. When it is detected that the current indoor temperature T1 is lower than the preset temperature T0, the infrared irradiation device installed at the window support is started to irradiate the transparent outer window. The transparent outer window is heated by using infrared light to reduce condensation and avoid the problem that the temperature difference between the transparent inner window and the transparent outer window cannot be compensated for by the insufficient infrared radiation of tableware.

[0025] In an optional embodiment, the control method further comprises the following steps: controlling the dishwasher to enter a washing program; obtaining a washing water temperature T2 of the dishwasher, and determining whether the washing water temperature T2 and the current indoor temperature T1 satisfy a preset starting condition; if yes, controlling the infrared irradiation device to start; if no, controlling the infrared irradiation device to stop; wherein the preset starting condition is that the washing water temperature T2 is greater than the current indoor temperature T1, and the temperature difference between the washing water temperature T2 and the current indoor temperature T1 is greater than a preset temperature difference threshold.

[0026] Beneficial effects: The difference between the washing water temperature T2 and the current indoor temperature T1 is obtained to control the start and stop of the infrared irradiation device, which is more accurate and efficient, and can also achieve the purpose of saving energy.

[0027] In an optional embodiment, the control method further comprises the following steps: controlling the dishwasher to enter a drying program; and controlling the infrared irradiation device to be turned on throughout the drying process.

[0028] Beneficial effects: Since the temperature inside the dishwasher is high during the drying stage, high-temperature steam is continuously generated inside the tub. It is also found through experimental tests that the viewing window is more likely to fog during the drying stage. Therefore, the infrared irradiation device is controlled to be turned on throughout the drying stage in the present application, which effectively prevents the viewing window from fogging during the drying stage. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or prior art description. Obviously, the drawings described below are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0030] Figure 1 It is an appearance structure schematic view of the door assembly in the embodiments of the present application.

[0031] Figure 2 is a sectional view of the door body assembly of the embodiment of the present application; Figure 1

[0032] Figure 3 is a sectional view of the door body assembly of the embodiment of the present application; Figure 2

[0033] Figure 4 is a sectional view of the door body assembly of the embodiment of the present application;

[0034] Figure 5 Figure 4

[0035] Figure 6 is a sectional view of the door body assembly of the embodiment of the present application;

[0036] Figure 7 Figure 6

[0037] Figure 8 is a flow chart of one embodiment of the control method of the dishwasher of the embodiment of the present application;

[0038] Figure 9 is a flow chart of another embodiment of the control method of the dishwasher of the embodiment of the present application;

[0039] Figure 10 is a flow chart of another embodiment of the control method of the dishwasher of the embodiment of the present application.

[0040] BRIEF DESCRIPTION OF THE DRAWINGS

[0041] 100, door body assembly;

[0042] 10, transparent inner window;

[0043] 20, transparent outer window; 21, flange structure; 22, first connecting plate;

[0044] 30, infrared lamp; 31, second connecting plate;

[0045] 40, window body support; 41, frame main body; 410, perspective window; 42, outer window mounting portion; 421, first ring wall; 422, second ring wall; 43, extension rib; 431, clamping groove; 44, screw column;

[0046] 50, outer door; 51, fixed buckle; 60, decorative shell; 70, sealing ring. DETAILED DESCRIPTION

[0047] ​​​​​​In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0048] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0049] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0050] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as there is no conflict.

[0051] The dishwasher is a device for automatically cleaning dishes, chopsticks, plates, dishes, knives, forks and other tableware, which reduces the labor intensity of people cleaning tableware and improves work efficiency, and is used by more and more families. In order to meet the curiosity of users, a perspective window structure is generally provided on the door body of the dishwasher to allow users to observe the working state of the dishwasher inside, thereby improving the participation and experience of users.

[0052] The perspective window of the related art generally adopts a design of double-layer glass, the inner layer glass faces the inner container, and the outer layer glass faces the indoor room. The temperature of the inner layer glass is relatively high due to being washed by hot water, and the temperature of the outer layer glass is the same as the room temperature, and the temperature difference is huge. When the dishwasher works, especially in the high-temperature washing or drying stage, the temperature inside the inner container is high. Due to the fact that the inner container is filled with high-temperature and high-humidity steam, long-term thermal expansion and cold contraction can easily cause the sealing failure of the perspective window, so that the high-temperature steam enters the inside of the perspective window. Due to the fact that the temperature outside is low, the temperature difference is large, and the high-temperature steam entering the inside of the perspective window is easily condensed by contacting the outer layer glass with a relatively low temperature, which can cause the outer layer glass to be fogged and frosted, thereby affecting the visibility of the perspective window and the user experience.

[0053] Therefore, in order to eliminate or weaken the problem that the outer glass window of the dishwasher is easily fogged when the dishwasher works, the embodiment is provided.

[0054] The embodiments of the present application will be described below in combination with Figures 1 to 10 .

[0055] According to the embodiments of the present application, in one aspect, the present application provides a door body assembly 100 of a dishwasher, which comprises a door body and a perspective window arranged on the door body.

[0056] Specifically, the perspective window comprises a transparent inner window 10, a transparent outer window 20, and an infrared absorption structure, wherein the transparent outer window 20 is arranged outside the transparent inner window 10 and forms a closed cavity with the transparent inner window 10; the infrared absorption structure is arranged on the transparent outer window 20 and is adapted to absorb the infrared radiation generated inside the dishwasher during operation to heat the transparent outer window 20, thereby increasing the temperature of the transparent outer window 20 to prevent condensation.

[0057] In the above embodiment, the infrared absorption structure is arranged to absorb the infrared radiation emitted inside the dishwasher during operation, to heat the transparent outer window 20, thereby increasing the temperature of the transparent outer window 20, reducing the temperature difference between the transparent outer window 20 and the transparent inner window, and preventing the outer window from being easily condensed in the case of low temperature outside, thereby eliminating or weakening the problem that the perspective window is easily fogged and frosted when the dishwasher works, and improving the user experience. Therefore, the problem that the perspective window is easily fogged and frosted when the dishwasher works can be effectively solved.

[0058] It should be noted that the transparent inner window 10 and the transparent outer window 20 are both transparent panels, and the material of the transparent inner window 10 and the transparent outer window 20 is not limited in the embodiment, and the transparent inner window 10 and the transparent outer window 20 are not limited to glass, but can also be transparent materials such as plastic.

[0059] Preferably, the transparent inner window 10 and the transparent outer window 20 in the embodiment are both glass.

[0060] In some embodiments, the infrared absorption structure is an infrared absorption coating arranged on the surface of the transparent outer window 20, and the infrared absorption coating is configured to absorb the infrared radiation from the inner container.

[0061] In the above embodiments, by using the infrared absorption coating as the infrared absorption structure to absorb the infrared radiation from the inner container, no additional installation space is required for the infrared absorption structure on the transparent window or the transparent outer window 20, the forming process is simple, easy to use and promote, and the infrared absorption coating can improve the aesthetics and appearance of the transparent outer window 20 while ensuring the original light transmission and visual effect of the transparent outer window 20.

[0062] In addition, the infrared absorption structure made by coating is uniform and has strong adhesion and is not easy to fall off, which can uniformly heat the entire transparent outer window 20 and avoid uneven temperature distribution and local condensation of the transparent outer window 20.

[0063] Of course, in the present embodiment, the structure of the infrared absorption structure is not limited to the infrared absorption coating, and existing structures such as infrared filters, infrared absorbers, etc. that can absorb infrared rays and convert light energy into heat energy to be transmitted to the transparent outer window 20 all belong to the protection scope of the present embodiment.

[0064] In other alternative embodiments, the transparent outer window 20 can also be made of near-infrared absorption glass, i.e., the infrared absorption structure is an infrared absorption material integrated into the transparent outer window 20.

[0065] In some more specific embodiments, the infrared absorption coating is made of an infrared absorption material, which has excellent near-infrared absorption performance, high visible light transmittance, excellent light resistance and weather resistance, can inhibit the degradation of near-infrared absorption performance over time, and has low manufacturing cost.

[0066] In some embodiments, the infrared absorption coating can be made of zinc selenide, aluminum oxide, magnesium fluoride, silicon dioxide, zinc sulfide, germanium, silicon, etc.

[0067] It should be noted that the present embodiment does not limit the specific material composition, proportion, etc. of the infrared absorption coating, as long as it can absorb the infrared radiation from the inner container and improve the temperature of the transparent outer window 20.

[0068] In some embodiments, the infrared absorption coating is suitable for absorbing infrared light of 0.7 μm-500 μm.

[0069] In the above embodiments, the wavelength of the infrared light absorbed by the infrared absorption coating is limited within the above range, which can sufficiently and efficiently absorb the infrared radiation from the inner container, tableware, and other components inside the inner container.

[0070] In some preferred embodiments, since the main infrared light wavelength emitted by the tableware and the dishwasher during operation is 3-10 microns, in this embodiment, the infrared absorption coating can reduce the absorption wavelength range to 3-10 microns, and after the range is reduced, the temperature difference of the transparent outer window 20 and the transparent inner window 10 will be effectively reduced.

[0071] In some embodiments, the infrared absorption coating is arranged on the inner surface of the transparent outer window 20, or the infrared absorption coating is arranged on the inner and outer surfaces of the transparent outer window 20.

[0072] In the above embodiments, by arranging the infrared absorption coating on the inner side of the transparent outer window 20, or on the inner and outer sides, the problem that the infrared absorption coating is only arranged on the outer side of the transparent outer window 20, which is easy to be worn out due to daily use and has a short service life, affecting the anti-fog effect of the transparent window, can be effectively avoided.

[0073] Preferably, in order to improve the absorption effect of the transparent outer window 20 on infrared light, the infrared absorption coating is arranged on the inner and outer surfaces of the transparent outer window 20.

[0074] In this embodiment, the transparent inner window 10 of the inner layer is not provided with an infrared absorption coating, and the transparent outer window 20 of the outer layer is provided with an infrared absorption coating, so that the infrared light generated inside the dishwasher can pass through the transparent inner window 10 and irradiate on the transparent outer window 20, and be absorbed by the infrared absorption coating. By coating one or more layers of infrared-absorbing coating on the transparent outer window 20 of the transparent window, using the infrared light emitted by the high temperature during washing or drying, the temperature difference between the transparent inner window 10 and the transparent outer window 20 inside and outside the window body is reduced, thereby effectively eliminating or weakening the situation that the transparent window is easy to fog during operation of the dishwasher.

[0075] Referring to Figure 2 As shown, L1 is the penetration path of the infrared light inside the dishwasher, and the infrared light inside the dishwasher can penetrate the transparent inner window 10 and be absorbed by the infrared absorption coating on the transparent outer window 20; L2 is the penetration path of visible light and ultraviolet light, and the visible light and ultraviolet light inside the dishwasher directly penetrate the transparent inner window 10 and the transparent outer window, and irradiate to the outside of the dishwasher.

[0076] In some embodiments, the door body assembly 100 further comprises an infrared irradiation device, and the infrared irradiation device is adapted to emit infrared light to the transparent outer window 20 to assist in heating the transparent outer window 20.

[0077] In the above embodiment, in the case of extremely low temperature outside or the need for rapid defrosting, the infrared irradiation device is started to irradiate the transparent outer window 20 with infrared light, so that the amount of infrared light absorbed by the infrared light absorbing structure of the transparent outer window 20 is increased, the temperature of the transparent outer window 20 is rapidly increased, rapid defrosting is achieved, and the condensation of the transparent outer window 20 is effectively prevented.

[0078] In some embodiments, the infrared irradiation device includes an infrared lamp 30.

[0079] In the above embodiment, the infrared irradiation device uses an infrared lamp 30, which is simple in structure and low in cost, and is easy to use and promote. When the temperature outside is too low or rapid defogging is needed, the infrared lamp 30 can be turned on to irradiate the transparent outer window 20 with a large amount of infrared light, thereby increasing the temperature of the transparent outer window 20 and further reducing the temperature difference between the transparent inner window 10 and the transparent outer window 20, which can effectively prevent the transparent outer window 20 from condensing and fogging.

[0080] In some embodiments, the door body assembly 100 further includes a window body support 40 for mounting and fixing the transparent inner window 10 and the transparent outer window 20, and the infrared lamp 30 is detachably mounted on the window body support 40.

[0081] In the above embodiment, the infrared lamp 30 is detachably mounted on the window body support 40, which facilitates the disassembly and maintenance of the infrared lamp 30.

[0082] In some embodiments, the window body support 40 includes a frame body 41, and a perspective window 410 is formed in the middle of the frame body 41. The transparent inner window 10 is mounted in the perspective window 410 and is sealingly fitted with the perspective window 410. The frame body 41 further includes an outer window mounting portion 42 on the side close to the transparent outer window 20. The outer periphery of the transparent outer window 20 is provided with a flange structure 21 adapted to be clamped into the outer window mounting portion 42, and the infrared lamp 30 is arranged on the outer periphery side of the flange structure 21. By arranging the infrared lamp on the outer periphery side of the flange structure 21 on the outer periphery of the transparent outer window, the infrared lamp 30 can be hidden and installed, which is more aesthetically pleasing.

[0083] In some specific embodiments, an annular window mounting groove is formed within the window mounting portion 42. The outer periphery of the transparent window 20 bends and extends towards the transparent inner window 10 to form the aforementioned flange structure 21, which is adapted to be inserted into the window mounting groove. The window mounting portion 42 includes a first annular wall 421 and a second annular wall 422 fixedly mounted on the frame body 41. The second annular wall 422 is located outside the first annular wall 421, and the space between the first annular wall 421 and the second annular wall 422 forms the window mounting groove. The infrared lamp 30 is an arc-shaped lamp strip or an annular lamp strip disposed on the outer periphery of the flange structure 21, and the first annular wall 421 is at least partially made of transparent or semi-transparent material so that the infrared light emitted by the infrared lamp 30 can pass through.

[0084] In the above embodiment, the infrared lamp 30 is a light strip and is attached to the outer peripheral wall of the flange structure 21. In actual use, the shape and size of the light strip can be set as needed. It is small in size, occupies little space, and is easy to install. The infrared lamp 30 can be hidden by being set on the outside of the flange structure 21 around the transparent window 20. The user cannot see the infrared lamp 30 when observing from the outside, which is more aesthetically pleasing.

[0085] In addition, the first ring wall 421 is at least partially made of transparent material, so that the infrared light generated by the infrared lamp 30 is partially covered by the flange structure 21 and absorbed, and can penetrate the first ring wall 421 to enter the cavity between the transparent inner window 10 and the transparent outer window 20, and then irradiate the transparent outer window 20 and the transparent inner window 10. Since the transparent inner window 10 has no absorption effect on infrared light, some infrared light will be reflected out by the inner liner and absorbed by the transparent outer window 20 after passing through the transparent inner window 10.

[0086] In this embodiment, the window bracket 40 can be designed to be transparent, semi-transparent, or partially transparent in order to allow infrared light from the infrared lamp 30 to pass through. At least the area of ​​the first ring wall 421 corresponding to the infrared lamp 30 is made of transparent or semi-transparent material. Preferably, in order to ensure light transmission while saving costs, the first ring wall 421 is made of transparent material.

[0087] In some embodiments, such as Figure 3 As shown, in order to avoid the installation of the infrared lamp 30, the axial length of the second ring wall 422 is generally shorter than that of the first ring wall 421. Alternatively, the second ring wall 422 portion corresponding to the installation portion of the infrared lamp 30 is provided with a clearance portion to avoid the infrared lamp 30 and facilitate the installation of the infrared lamp 30.

[0088] Preferably, in this embodiment, a sealing ring 70 is provided between the flange structure 21 and the outer window mounting groove to ensure the sealing of the closed cavity.

[0089] In some embodiments, the end of the first ring wall 421 is located on the inner side of the transparent outer window 20, and the first ring wall 421 is arranged between the closed cavity and the flange structure 21. The first ring wall 421 plays a role of heat insulation, which can effectively avoid the increase of heat transfer power between the inner and outer window bodies, thereby avoiding the problems of rapid heat loss of the dishwasher and increased energy consumption.

[0090] In some embodiments, in order to reinforce the connection between the transparent outer window 20 and the window body support 40, a plurality of outwardly protruding first connecting plates 22 are arranged on the outer periphery of the flange structure 21, and screw holes are formed in the first connecting plates 22. A plurality of screw columns 44 are arranged on the outer periphery of the window body support 40, and the transparent outer window 20 and the window body support 40 are fixed by corresponding screw columns 44 and screw holes through a plurality of screws.

[0091] Preferably, in order to simplify the structure, in the embodiment, as shown in Figures 1 to 4 , Figure 6 the infrared lamp 30 is fixed by one or more of the above-mentioned screws.

[0092] In some specific embodiments, in order to facilitate the disassembly and assembly of the infrared lamp 30, the length of the infrared lamp 30 is matched with the distance between the two adjacent first connecting plates 22, and the two ends of the infrared lamp 30 are respectively provided with positioning grooves through which the two first connecting plates 22 pass. After the first connecting plates 22 pass through the positioning grooves, the first connecting plates 22 are connected with the screw columns 44 through the screw holes in the first connecting plates 22 and the screw columns 44, thereby realizing the effective fixing of the infrared lamp 30, the transparent outer window 20 and the window body support 40.

[0093] Of course, in other alternative embodiments, a second connecting plate 31 similar to the first connecting plate 22 can be arranged on the outer periphery of the infrared lamp 30, screw holes are formed in the second connecting plate 31, and the infrared lamp 30, the transparent outer window 20 and the window body support 40 are fixed by sequentially passing the screw holes in the second connecting plate 31 and the first connecting plate 22 through the screw and connecting with the screw columns 44.

[0094] In the embodiment, the door body includes an inner door and an outer door 50, and preferably, in order to simplify the assembly, the window body support 40 is integrally formed with the inner door. The outer door 50 is connected with the window body support 40 in a clamping manner, that is, the outer door 50 is connected with the inner door in a clamping manner, which facilitates disassembly and assembly.

[0095] Specifically, the window body support 40 is provided with an extension rib 43 on the side close to the outer door 50, and the extension rib 43 is provided with a clamping groove 431. The outer door 50 is provided with a fixing buckle 51 adapted to be clamped into the clamping groove 431 on the side close to the window body support 40, thereby realizing the effective fixing of the inner door and the outer door 50.

[0096] Preferably, in order to improve the appearance of the dishwasher, as shown in Figures 1 to 3 The door body assembly 100 further comprises a decorative shell 60, which is annular and covers the outer periphery of the transparent outer window 20 and the outer door 50, thereby playing a decorative covering role.

[0097] According to an embodiment of the present application, in another aspect, a dishwasher is provided, which comprises an inner container and the door body assembly 100 of any of the above embodiments.

[0098] When the dishwasher is working, the water temperature in the inner container can reach 70-80℃, and the humidity is 99% RH. The transparent inner window 10 has a high temperature due to being washed by hot water, while the transparent outer window 20 has the same temperature as the room temperature, resulting in a large temperature difference. The inner and outer window layers are prone to air leakage due to thermal expansion and contraction, which causes the steam to easily leak into the closed cavity inside the window body and condense on the transparent outer window 20, resulting in fogging of the transparent outer window 20. Since a large amount of infrared radiation is generated when the tableware and the dishwasher body are washed at high temperature, the infrared absorption coating is arranged on the outer layer of the transparent outer window 20. After the infrared radiation emitted by the tableware and the like passes through the inner layer of the transparent inner window 10, it is absorbed by the outer layer of the transparent outer window 20, so that the outer layer of the transparent outer window 20 can also be heated, reducing the temperature difference between the inner and outer window layers and preventing condensation.

[0099] In this embodiment, the transparent inner window 10 is located on the side close to the inner cavity of the inner container, and the transparent outer window 20 is located on the side away from the inner cavity of the inner container.

[0100] According to an embodiment of the present application, in another aspect, a control method of a dishwasher is provided, which comprises an inner container and the door body assembly 100 of the above embodiment, and combines Figures 1 to 4 and Figure 8 The control method comprises the following steps:

[0101] Step S101: receiving a dishwasher start signal;

[0102] Step S102: obtaining the current indoor temperature T1, and when it is judged that the current indoor temperature T1 is lower than the preset temperature T0, controlling the infrared irradiation device to start.

[0103] In the above embodiment, the current indoor temperature T1 is detected before the dishwasher starts. When it is detected that the current indoor temperature T1 is lower than the preset temperature T0, the infrared irradiation device installed at the window body support 40 irradiates the transparent outer window 20, the transparent outer window 20 is heated by using infrared light compensation, condensation is reduced, and the problem that the transparent outer window 20 cannot compensate for the temperature difference between the transparent inner window 10 and the transparent outer window 20 due to insufficient infrared radiation from the tableware is avoided.

[0104] In some embodiments, the room temperature can be detected by a temperature sensing bag inside the dishwasher. Since the temperature inside the dishwasher is consistent with the room temperature before the dishwasher is started, the current room temperature T1 can be detected by the temperature sensing bag of the dishwasher before the dishwasher is started. Of course, in other alternative embodiments, the current room temperature T1 can also be detected by other temperature measuring devices connected to the dishwasher, which is not limited in the present embodiment.

[0105] In some embodiments, the control method of the dishwasher further comprises: receiving an infrared irradiation device starting signal, and controlling the infrared irradiation device to start.

[0106] For example, during use, the user can issue an infrared irradiation device starting instruction through a key, touch or voice, etc. After receiving the instruction, the dishwasher controls the infrared irradiation device to start.

[0107] In some embodiments, in combination with Figures 1 to 4 and Figure 9 As shown, the control method further comprises the following steps:

[0108] Step S201: controlling the dishwasher to enter a washing program;

[0109] Step S202: obtaining the washing water temperature T2 of the dishwasher, and determining whether the washing water temperature T2 and the current indoor temperature T1 meet a preset starting condition;

[0110] If yes, step S203 is performed; if no, step S204 is performed;

[0111] Step S203: controlling the infrared irradiation device to start;

[0112] Step S204: controlling the infrared irradiation device to stop;

[0113] Wherein, the preset starting condition is that the washing water temperature T2 is greater than the current indoor temperature T1, and the temperature difference between the washing water temperature T2 and the current indoor temperature T1 is greater than a preset temperature difference threshold.

[0114] In the above embodiment, the on-off of the infrared irradiation device is controlled by obtaining the difference between the washing water temperature T2 and the current indoor temperature T1, which is more accurate and efficient, and can also achieve the purpose of saving energy. For example, when the washing water temperature is low, although the current indoor temperature T1 is lower than the preset temperature T0, the difference between them is small, and the transparent outer window 20 will not fog. At this time, if the infrared irradiation device is turned on, it will cause the problem of resource waste.

[0115] Preferably, in the present embodiment, the temperature difference threshold is 40℃.

[0116] Specifically, when it is detected that the indoor temperature T1 is lower than the preset temperature T0 and the current washing machine internal washing water temperature is greater than T1+40℃, the infrared lamp 30 is turned on, and when the washing water temperature is less than T1+40℃, the infrared lamp 30 is turned off.

[0117] In some embodiments, the dish washing machine,

[0118] In some embodiments, in combination Figures 1 to 4 and Figure 10 As shown in the control method further comprises the following steps:

[0119] Step S301: control the dish washing machine to enter the drying program;

[0120] Step S302: control the infrared irradiation device to be turned on throughout the drying process.

[0121] In the above embodiments, since the temperature inside the dish washing machine is high during the drying stage, high-temperature steam is continuously generated inside the inner container, and it is also found through experimental tests that the sight window is more prone to fogging during the drying stage. Therefore, the infrared irradiation device is controlled to be turned on throughout the drying stage in the present embodiment, effectively preventing the phenomenon of fogging of the sight window during the drying stage.

[0122] Although the embodiments of the present application are described in conjunction with the accompanying drawings, various modifications and changes can be made by those skilled in the art without departing from the spirit and scope of the present application, and such modifications and changes fall within the scope defined by the appended claims.

Claims

1. A door assembly of a dishwasher, the door assembly (100) comprising a door body and a see-through window provided on the door body, characterized in that, The see-through window comprises: a transparent inner window (10); a transparent outer window (20) arranged outside the transparent inner window (10) and forming a closed cavity with the transparent inner window (10); an infrared-absorbing structure arranged on the transparent outer window (20) and adapted to absorb infrared radiation generated inside the dishwasher during operation to heat the transparent outer window (20); The door body assembly (100) further comprises: an infrared irradiation device adapted to emit infrared light to the transparent outer window (20) to assist in heating the transparent outer window (20), the infrared irradiation device comprising an infrared lamp (30); The door body assembly (100) further comprises: a window support (40) for mounting and fixing the transparent inner window (10) and the transparent outer window (20); The window support (40) comprises: a frame body (41) having a see-through window (410) formed in the middle, and the transparent inner window (10) is mounted in the see-through window (410); The frame body (41) further comprises an outer window mounting portion (42) arranged on one side close to the transparent outer window (20), and the outer periphery of the transparent outer window (20) is provided with a flange structure (21) adapted to be clamped into the outer window mounting portion (42), and the infrared lamp (30) is arranged on the outer periphery side of the flange structure (21); The outer window mounting portion (42) comprises a first ring wall (421) and a second ring wall (422) fixedly arranged on the frame body (41), the second ring wall (422) is located outside the first ring wall (421), and the spacing space between the first ring wall (421) and the second ring wall (422) forms an outer window mounting groove, and the flange structure (21) is adapted to be inserted into the outer window mounting groove; The infrared lamp (30) is an arc-shaped lamp strip or a ring-shaped lamp strip arranged on the outer periphery side of the flange structure (21), and the first ring wall (421) is at least partially made of transparent or translucent material, so that the infrared light emitted by the infrared lamp (30) can be transmitted; The end of the first ring wall (421) is located on the inner side of the transparent outer window (20), and the first ring wall (421) is arranged between the closed cavity and the flange structure (21); The axial length of the second ring wall (422) is shorter than that of the first ring wall (421), or the second ring wall (422) is provided with a avoiding portion corresponding to the infrared lamp (30) to avoid the infrared lamp (30).

2. The door assembly of claim 1, wherein, The infrared-absorbing structure is an infrared-absorbing coating arranged on the surface of the transparent outer window (20).

3. The door assembly of claim 2, wherein, The infrared-absorbing coating is adapted to absorb infrared light of 0.7 μm-500 μm.

4. The door assembly of claim 2, wherein, The infrared-absorbing coating is arranged on the inner surface of the transparent outer window (20); or the inner and outer surfaces of the transparent outer window (20) are both provided with the infrared-absorbing coating.

5. A dishwasher, characterized in that The door body assembly (100) comprises an inner container and any one of the door body assemblies (100) according to claims 1-4.

6. A control method of a dishwasher, characterized by, The dishwasher comprises an inner container and any one of the door body assemblies (100) according to claims 1-4, and the control method comprises: receiving a dishwasher start signal; Acquire the current indoor temperature T1, and when it is determined that the current indoor temperature T1 is lower than the preset temperature T0, control the infrared irradiation device to start. 7.The control method of the dish washer according to claim 6, characterized in that, The control method further comprises the following steps: Control the dishwasher to enter a washing program; Acquire the washing water temperature T2 of the dishwasher, and determine whether the washing water temperature T2 and the current indoor temperature T1 satisfy a preset starting condition; If yes, control the infrared irradiation device to start; if no, control the infrared irradiation device to stop; The preset starting condition is that the washing water temperature T2 is greater than the current indoor temperature T1, and the temperature difference between the washing water temperature T2 and the current indoor temperature T1 is greater than a preset temperature difference threshold. 8.The control method of the dish washer according to claim 7, characterized in that, The control method further comprises the following steps: Control the dishwasher to enter a drying program; Control the infrared irradiation device to start throughout the drying process.

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