Door assembly of cooking apparatus, cooking apparatus, and control method thereof

Abstract

The present application relates to the technical field of household appliances, belongs to energy-saving ovens and other household kitchen appliances, and discloses a door body assembly of a cooking device, the cooking device and a control method thereof, which comprises an outer door provided with a ventilation opening; a camera assembly arranged on the outer side of the outer door, the camera assembly comprising a first mounting shell and a camera arranged in the first mounting shell, and the first mounting shell being provided with a first air inlet and a first air outlet; and a mainboard assembly arranged on the inner side of the outer door, the mainboard assembly comprising a second mounting shell, a camera mainboard arranged in the second mounting shell and a cooling fan, the second mounting shell being provided with a second air inlet and a second air outlet, the second air inlet being communicated with the first air outlet through the ventilation opening, when the cooling fan is working, the airflow on the outer side of the outer door flows through the first mounting shell, enters the second mounting shell through the ventilation opening, and flows out of the second mounting shell through the second air outlet, and the camera mainboard is located in the flow path of the airflow.

Description

Technical Field

[0001] This invention relates to the field of household appliance technology, specifically to the door assembly of a cooking device, the cooking device itself, and its control method. Background Technology

[0002] Electric ovens are equipped with cameras, allowing users to observe the food cooking inside the oven cavity. In these technologies, the camera is typically mounted on the door, which may be a glass door. The door's interior has airflow channels designed to cool the camera. However, because the glass door is relatively hot, the airflow through these channels is also quite hot, resulting in poor cooling of the camera. Combined with the heat generated by the camera itself, this leads to high temperatures for the camera and its components, potentially affecting the camera's lifespan and image quality. Summary of the Invention

[0003] In view of this, the present invention provides a door assembly for a cooking device, a cooking device and a control method thereof, to solve the problem of poor cooling effect of the camera in related technologies.

[0004] In a first aspect, the present invention provides a door assembly for a cooking device, comprising: The outer door is equipped with a ventilation opening; A camera assembly is located on the outside of the outer door. The camera assembly includes a first mounting housing and a camera disposed within the first mounting housing. The first mounting housing is provided with a first air inlet and a first air outlet. The motherboard assembly is located on the inner side of the outer door. The motherboard assembly includes a second mounting shell, a camera motherboard disposed in the second mounting shell, and a cooling fan. The second mounting shell has a second air inlet and a second air outlet. The second air inlet is connected to the first air outlet through the ventilation port. When the cooling fan is working, the airflow from the outside of the outer door flows through the first mounting shell and then enters the second mounting shell through the ventilation port, and flows out of the second mounting shell through the second air outlet. The camera motherboard is located in the airflow path.

[0005] Beneficial Effects: When the cooling fan is operating, the cool airflow from outside the outer door enters the first mounting housing through the first air inlet, cooling the camera. It then exits the first mounting housing through the first air outlet, passes through the ventilation holes on the outer door, enters the second mounting housing through the second air inlet, and finally exits the second mounting housing through the second air outlet. Since the camera motherboard is located inside the second mounting housing and within the airflow path, the cool airflow cools it as it flows through the housing. By utilizing the cool air from outside the outer door to cool the camera and motherboard, the operating conditions of the camera and motherboard can be improved, extending their lifespan and ensuring that the camera's image quality is not affected by high temperatures. Furthermore, because the camera has a relatively low temperature tolerance, and the outer side of the outer door is relatively cooler, the camera is placed on the outer side. The camera motherboard, with a higher temperature tolerance than the camera, is placed on the inner side of the outer door for aesthetic reasons and to reduce space occupation on the outer side.

[0006] In one alternative implementation, the camera motherboard is located upstream of the cooling fan, along the direction of airflow.

[0007] Beneficial effect: Along the direction of airflow, the camera motherboard is located upstream of the cooling fan. The cold air from the outside of the door first cools the camera and then the camera motherboard. After that, it is drawn into the cooling fan, which can prevent the airflow from getting hotter after passing through the cooling fan and affecting the cooling effect on the camera motherboard.

[0008] In one alternative embodiment, the first mounting housing includes a mounting base and a decorative cover, the camera assembly further includes a camera bracket, the camera is fixed to the camera bracket, the camera bracket is disposed within the mounting base, and the first air outlet is located at the end of the mounting base away from the decorative cover and is formed by the gap between the camera bracket and the mounting base.

[0009] Beneficial effects: The first mounting housing includes a mounting base and a decorative cover. The camera assembly also includes a camera bracket. The camera is fixed to the camera bracket, which is housed within the mounting base. During assembly, the camera is first fixed to the camera bracket, then the camera bracket is assembled into the mounting base. After assembly, the decorative cover is connected to the mounting base. The decorative cover conceals the internal components of the mounting base, resulting in a more aesthetically pleasing appearance. The first air outlet is located at the end of the mounting base furthest from the decorative cover and is formed by the gap between the camera bracket and the mounting base. This ensures that the cool air entering the first mounting housing cools the camera before exiting through the first air outlet, thus ensuring effective cooling of the camera.

[0010] In one alternative embodiment, the camera assembly further includes a sealing gasket disposed between the camera bracket and the outer door, the sealing gasket having a first through hole connecting the first air outlet and the ventilation opening.

[0011] Beneficial effects: A sealing gasket is installed between the camera bracket and the outer door to prevent steam condensation generated during cooking from sliding down the outer door surface and entering the camera assembly, which could cause camera malfunction or damage. The sealing gasket has a first through hole connecting the first air outlet and the vent, allowing the first air outlet and the vent to communicate while ensuring a seal.

[0012] In one alternative embodiment, the second mounting housing includes a fixing box and a fixing cover, and fasteners pass through the outer door to connect the fixing base, the camera bracket, and the fixing box into one unit.

[0013] Beneficial effects: Fasteners pass through the outer door to connect the mounting base, camera bracket, and mounting box into one unit. The fasteners can simultaneously fix the motherboard assembly and camera assembly to the inner and outer sides of the outer door, which can improve assembly efficiency.

[0014] In one alternative embodiment, the decorative cover and the fixing base are connected by a snap-fit ​​structure; And / or, the fixing cover and the fixing box are connected by a snap-fit ​​structure.

[0015] Beneficial effects: The decorative cover and the mounting base are connected by a snap-fit ​​structure. During assembly, fasteners pass through the outer door to connect the mounting base, camera bracket, and mounting box into one unit, and then the decorative cover is snapped onto the mounting base, which improves assembly efficiency. The mounting cover and the mounting box are also connected by a snap-fit ​​structure. During assembly, fasteners pass through the outer door to connect the mounting base, camera bracket, and mounting box into one unit, and then the mounting cover is snapped onto the mounting box, which improves assembly efficiency.

[0016] In one optional embodiment, the door assembly further includes a middle transparent piece, an upper frame, a left frame, and a right frame. The middle transparent piece, together with the outer door, the upper frame, the left frame, and the right frame, forms a first heat dissipation channel. The main board assembly is disposed in the first heat dissipation channel. The upper frame is provided with a first opening for fluid to flow out of the first heat dissipation channel. The first opening is adapted to communicate with the heat dissipation duct at the top of the cooking equipment's housing.

[0017] Beneficial Effects: The central transparent component, along with the outer door, upper frame, left frame, and right frame, forms a first heat dissipation channel. The mainboard assembly is housed within this channel. The upper frame has a first opening for fluid to exit the channel, which connects to the heat dissipation duct at the top of the cooking appliance. This allows cold air to enter the channel from below the door assembly, flowing upwards to cool the assembly before exiting through the first opening in the upper frame and entering the heat dissipation duct at the top of the appliance. This first heat dissipation channel prevents direct heat transfer from the cooking cavity to the door assembly's interior. Bottom intake and top exhaust utilize the natural convection of hot and cold air, ensuring a smooth flow of cooling fluid from bottom to top through the entire channel, creating a continuous and stable airflow and improving the overall heat dissipation efficiency of the door assembly. The first heat dissipation channel, in conjunction with the airflow channels inside the mounting box, forms a dual heat dissipation system. This reduces both the door assembly's temperature and the heat radiation and conduction from the high temperature of the door assembly to the camera and mainboard, thus improving the overall operating temperature of the camera and mainboard. In addition, the first heat dissipation channel can evenly remove heat from all parts of the door assembly, reduce the temperature difference between the inside and outside and the top and bottom of the door assembly, reduce the thermal stress caused by uneven heating of the door assembly, and improve the structural reliability and safety of the door assembly.

[0018] In one alternative embodiment, a gap exists between the second mounting shell and the intermediate transparent element.

[0019] Beneficial effects: By setting a gap between the second mounting shell and the middle transparent part, it is possible to ensure that the airflow in the first heat dissipation channel flows smoothly upward, making the first heat dissipation channel and the channel for dissipating heat from the camera and camera motherboard independent of each other. At the same time, it can prevent the heat from the middle transparent part from being transferred to the camera motherboard through the second mounting shell.

[0020] In one alternative embodiment, the second mounting shell is inserted into the upper frame via a positioning structure.

[0021] Beneficial effect: The second mounting shell and the upper frame are connected by a positioning structure, which can ensure that the assembly position of the second mounting shell is correct.

[0022] In one optional embodiment, the door assembly further includes an inner transparent element, which, together with the middle transparent element, the upper frame, the left frame, and the right frame, forms a second heat dissipation channel, and the first opening communicates with the second heat dissipation channel.

[0023] Beneficial effects: The inner transparent component, middle transparent component, upper frame, left frame, and right frame form a second heat dissipation channel. The first opening connects to the second heat dissipation channel, allowing cool air to enter through the bottom of the door assembly. The cool air flows upward, cooling the inner and middle transparent components, and finally flows out of the first heat dissipation channel through the first opening in the upper frame, entering the heat dissipation duct at the top of the cabinet. By setting up the second heat dissipation channel, the temperature of the door assembly can be further reduced, further preventing the high temperature of the cooking cavity from being transferred to the second mounting shell, avoiding heat radiation and heat conduction from the high temperature of the door assembly to the camera and camera motherboard, thus improving the overall operating temperature of the camera and camera motherboard.

[0024] In one optional implementation, the camera motherboard is equipped with a temperature sensor, and the temperature sensor and the cooling fan are adapted to communicate with the control motherboard of the cooking equipment.

[0025] Beneficial effects: By setting a temperature sensor on the camera motherboard, the ambient temperature of the camera motherboard can be monitored in real time. The operation of the cooling fan and its power can be controlled based on the temperature detected by the temperature sensor. This can save energy while ensuring that the temperature of the camera motherboard does not get too high.

[0026] Secondly, the present invention also provides a cooking apparatus, comprising: The cabinet has a cooking cavity, and the top of the cabinet has a heat dissipation duct, which contains an exhaust fan. The door assembly of the cooking equipment is closable and connectable to the housing.

[0027] Thirdly, the present invention also provides a control method for a cooking device, applied to the cooking device, the control method comprising: Obtain the ambient temperature T of the camera motherboard; The operation of the cooling fan and its power consumption are controlled based on the ambient temperature T of the camera motherboard.

[0028] Beneficial effect: It can save energy while ensuring that the temperature of the camera motherboard does not get too high.

[0029] In one optional implementation, controlling whether the cooling fan operates and its power during operation based on the ambient temperature of the camera motherboard includes: If T ≤ the first preset temperature, the cooling fan is controlled to not work; If the first preset temperature < T < the second preset temperature, control the cooling fan to operate at the first power. If T ≥ the second preset temperature, the cooling fan is controlled to operate at the second power, which is higher than the second power.

[0030] Beneficial effects: If the ambient temperature of the camera motherboard is less than or equal to the first preset temperature, it indicates that the cooking equipment is in a low-temperature stage, and the cooling fan is not operated to save energy. If the ambient temperature of the camera motherboard is greater than the first preset temperature but less than the second preset temperature, the ambient temperature of the camera motherboard has little impact on its temperature resistance. The cooling fan is controlled to operate at the first power economic mode. The cold air flow outside the outer door enters the first mounting shell through the first air inlet to cool the camera, and then flows out of the first mounting shell through the first air outlet. After passing through the ventilation hole on the outer door, it enters the second mounting shell through the second air inlet to cool the camera motherboard. After cooling the camera motherboard, it flows out of the second mounting shell through the second air outlet. Under the suction of the exhaust fan, it flows upward into the door assembly, enters the cooling air duct, and is finally discharged outside the cooking equipment. If the ambient temperature of the camera motherboard is greater than or equal to the second preset temperature, the ambient temperature will have a certain impact on the temperature resistance of the camera motherboard. The cooling fan will be controlled to run at full load with the second power. The cold air flow outside the outer door enters the first mounting shell through the first air inlet to cool the camera. Then it flows out of the first mounting shell through the first air outlet, passes through the ventilation hole on the outer door, enters the second mounting shell through the second air inlet, cools the camera motherboard, and then flows out of the second mounting shell through the second air outlet. Under the suction of the exhaust fan, it flows upward into the door assembly, enters the heat dissipation duct, and finally is discharged outside the cooking equipment. Attached Figure Description

[0031] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0032] Figure 1 This is an exploded view of the door assembly of a cooking device according to an embodiment of the present invention; Figure 2 for Figure 1 Exploded view of the central camera module; Figure 3 for Figure 1 Exploded view of motherboard components; Figure 4 This is a perspective view of the inner side of the outer door of a cooking device according to an embodiment of the present invention, when the door assembly fixing cover is not assembled with the fixing box; Figure 5 for Figure 4 Enlarged view of point A in the middle; Figure 6This is a cross-sectional view of a door assembly of a cooking device according to an embodiment of the present invention; Figure 7 for Figure 6 Enlarged view of point B in the middle; Figure 8 This is a partial cross-sectional view of a cooking device according to an embodiment of the present invention; Figure 9 This is a flowchart illustrating a control method for a cooking device according to an embodiment of the present invention.

[0033] Explanation of reference numerals in the attached figures: 1. Outer door; 101. Ventilation opening; 2. Camera; 3. Mounting bracket; 301. First air inlet; 302. First air outlet; 303. First screw post; 304. Clip; 4. Decorative cover; 401. First buckle; 5. Sealing gasket; 501. First through hole; 502. Positioning post; 6. Camera bracket; 601. Positioning hole; 602. Second screw through hole; 7. Camera mainboard; 8. Cooling fan; 9. Mounting box; 901. Second air inlet; 902. Second air outlet; 903. First screw through hole; 904. Guide post; 905. Protrusion; 9 06. Positioning insert; 10. Fixing cover; 1001. Second buckle; 11. Fastener; 12. Middle transparent piece; 13. Upper frame; 1301. First opening; 14. Left frame; 15. Right frame; 16. First heat dissipation channel; 17. Inner transparent piece; 18. Second heat dissipation channel; 19. Temperature sensor; 20. Control motherboard; 21. Cabinet; 2101. Cooking cavity; 22. Heat dissipation duct; 2201. Lower air duct; 2202. Upper heat dissipation duct; 23. Exhaust fan; 24. Grill rack; 25. Grease tray; 26. Lower frame; 27. Door handle. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0036] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0037] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0038] Electric ovens are equipped with cameras, allowing users to observe the food cooking inside the oven cavity. In these technologies, the camera is typically mounted on the door, which may be a glass door. The door's interior has airflow channels designed to cool the camera. However, because the glass door is relatively hot, the airflow through these channels is also quite hot, resulting in poor cooling of the camera. Combined with the heat generated by the camera itself, this leads to high temperatures for the camera and its components, potentially affecting the camera's lifespan and image quality.

[0039] The following is combined Figures 1 to 9 The following describes embodiments of the present invention.

[0040] According to an embodiment of the present invention, in a first aspect, a door assembly of a cooking device is provided, including an outer door 1, a camera assembly, and a motherboard assembly.

[0041] The outer door 1 is provided with a ventilation opening 101; the camera assembly is located on the outside of the outer door 1, and the camera assembly includes a first mounting shell and a camera 2 disposed in the first mounting shell. The first mounting shell is provided with a first air inlet 301 and a first air outlet 302; the main board assembly is located on the inside of the outer door 1, and the main board assembly includes a second mounting shell, a camera main board 7 disposed in the second mounting shell, and a cooling fan 8. The second mounting shell is provided with a second air inlet 901 and a second air outlet 902. The second air inlet 901 is connected to the first air outlet 302 through the ventilation opening 101. When the cooling fan 8 is working, the airflow on the outside of the outer door 1 flows through the first mounting shell and then enters the second mounting shell through the ventilation opening 101, and flows out of the second mounting shell through the second air outlet 902. The camera main board 7 is located in the airflow path.

[0042] In this embodiment, the outer door 1 is provided with a ventilation opening 101; the camera assembly is located on the outside of the outer door 1, and the camera assembly includes a first mounting housing and a camera 2 disposed within the first mounting housing. The first mounting housing is provided with a first air inlet 301 and a first air outlet 302. The main board assembly is located on the inside of the outer door 1, and the main board assembly includes a second mounting housing, a camera main board 7 disposed within the second mounting housing, and a cooling fan 8. The second mounting housing is provided with a second air inlet 901 and a second air outlet 902. The second air inlet 901 is connected to the first air outlet 302 through the ventilation opening 101. When the cooling fan 8 is working, the cool airflow outside the outer door 1 enters the first mounting housing through the first air inlet 301, cooling the camera 2. Then, it flows out of the first mounting housing through the first air outlet 302, passes through the ventilation holes on the outer door 1, enters the second mounting housing through the second air inlet 901, and finally flows out of the second mounting housing through the second air outlet 902. Since the camera motherboard 7 is located inside the second mounting housing and within the airflow path, the cool airflow cools the camera motherboard 7 as it flows through the second mounting housing. By utilizing the cool air outside the outer door 1 to cool the camera 2 and camera motherboard 7, the operating conditions of the camera 2 and camera motherboard 7 can be better improved, their service life extended, and the shooting quality of the camera 2 ensured to be unaffected by high temperatures. In addition, since the camera 2 has a relatively low temperature resistance and the outer side of the outer door 1 has a relatively low temperature, the camera 2 is placed on the outer side of the outer door 1. The camera motherboard 7 has a higher temperature resistance than the camera 2. In order to be aesthetically pleasing and to reduce the space occupied on the outer side of the outer door 1, the camera motherboard 7 is placed on the inner side of the outer door 1.

[0043] In one specific embodiment, the camera 2 is typically temperature resistant to below 70°C, and the camera motherboard 7 is typically temperature resistant to below 85°C.

[0044] In one specific embodiment, the outer door 1 is a glass door.

[0045] Specifically, after assembly, the second mounting shell is positioned higher than the camera 2, and the second mounting shell will not interfere with the normal shooting of the camera 2.

[0046] In one embodiment, the camera motherboard 7 is located upstream of the cooling fan 8, along the direction of airflow.

[0047] In this embodiment, along the airflow direction, the camera motherboard 7 is located upstream of the cooling fan 8. The cold air outside the outer door 1 first cools the camera 2 and then the camera motherboard 7. After that, it is drawn into the cooling fan 8, which can prevent the airflow temperature from rising after passing through the cooling fan 8, thus affecting the cooling effect on the camera motherboard 7.

[0048] Specifically, it can be combined with Figure 5 When the airflow passes through the camera motherboard 7, it will flow to the right, be drawn in by the cooling fan 8, and then flow out of the second mounting shell through the second air outlet 902.

[0049] In an alternative embodiment, the camera motherboard 7 can also be located downstream of the cooling fan 8. After the cold air outside the outer door 1 cools the camera 2, it is first drawn in by the cooling fan 8, flows out from the fan outlet of the cooling fan 8, blows towards the camera motherboard 7, and then flows out of the second mounting shell through the second outlet 902.

[0050] In one embodiment, the first mounting housing includes a mounting base 3 and a decorative cover 4. The camera assembly also includes a camera bracket 6. The camera 2 is fixed to the camera bracket 6. The camera bracket 6 is disposed inside the mounting base 3. The first air outlet 302 is located at the end of the mounting base 3 away from the decorative cover 4 and is formed by the gap between the camera bracket 6 and the mounting base 3.

[0051] In this embodiment, the first mounting housing includes a fixing base 3 and a decorative cover 4. The camera assembly also includes a camera bracket 6. The camera 2 is fixed to the camera bracket 6, which is located inside the fixing base 3. During assembly, the camera 2 is first fixed to the camera bracket 6, and then the camera bracket 6 is assembled into the fixing base 3. After assembly, the decorative cover 4 is connected to the fixing base 3. The decorative cover 4 can cover the internal components of the fixing base 3, making the appearance more aesthetically pleasing. The first air outlet 302 is located at the end of the fixing base 3 away from the decorative cover 4 and is formed by the gap between the camera bracket 6 and the fixing base 3. This ensures that the cold air entering the first mounting housing cools the camera 2 before flowing out from the first air outlet 302, ensuring the cooling effect on the camera 2.

[0052] In one specific embodiment, a first air outlet 302 is formed between the upper side of the camera bracket 6 and the fixed base 3, and there is no gap between the rest of the camera bracket 6 and the fixed base 3.

[0053] In one specific embodiment, the camera bracket 6 is fixed in the mounting base 3 by screws.

[0054] In one specific embodiment, the sidewall of the fixing base 3 is a cylindrical structure.

[0055] In one embodiment, such as Figure 2 and Figure 7 As shown, the camera assembly also includes a sealing gasket 5, which is located between the camera bracket 6 and the outer door 1. The sealing gasket 5 has a first through hole 501 that connects the first air outlet 302 and the ventilation opening 101.

[0056] In this embodiment, a sealing gasket 5 is provided between the camera bracket 6 and the outer door 1 to prevent steam condensate generated during the operation of the cooking equipment from sliding down the surface of the outer door 1 and entering the camera assembly, which could cause abnormal image capture or damage to the camera 2. The sealing gasket 5 is provided with a first through hole 501 connecting the first air outlet 302 and the vent 101, which allows the first air outlet 302 and the vent 101 to be connected while ensuring a seal.

[0057] Specifically, the sealing gasket 5 is made of silicone or rubber. The camera bracket 6 squeezes the sealing gasket 5 to deform it, thereby achieving a seal between the camera bracket 6 and the outer door 1.

[0058] In one specific embodiment, the sealing gasket 5 is provided with a positioning post 502 and the camera bracket 6 is provided with a positioning hole 601. During assembly, the positioning post 502 is inserted into the positioning hole 601, which can pre-assemble the camera bracket 6 and the sealing gasket 5 together and ensure that the assembly position of the sealing gasket 5 is correct.

[0059] In one embodiment, the second mounting housing includes a fixing box 9 and a fixing cover 10, and fasteners 11 pass through the outer door 1 to connect the fixing base 3, the camera bracket 6, and the fixing box 9 into one unit.

[0060] In this embodiment, the fastener 11 passes through the outer door 1 to connect the fixing base 3, the camera bracket 6, and the fixing box 9 into one unit. The fastener 11 can simultaneously fix the motherboard assembly and the camera assembly to the inner and outer sides of the outer door 1, which can improve assembly efficiency.

[0061] In one specific embodiment, the mounting box 9 has a first screw through hole 903, the outer door 1 has a mounting hole, the camera bracket 6 has a second screw through hole 602, and the mounting base 3 has a first screw post 303. The fastener 11 passes through the first screw through hole 903, the mounting hole, and the second screw through hole 602 in sequence and is then fastened to the first screw post 303, thereby fixing the motherboard assembly and the camera assembly to the inner and outer sides of the outer door 1 respectively. Furthermore, since the camera motherboard 7 is fixed inside the mounting box 9, the nut of the fastener 11, after passing through the first screw through hole 903, will not occupy much space inside the mounting box 9, thus avoiding interference with the installation of the camera motherboard 7.

[0062] In an alternative embodiment, a third screw through hole can be provided in the mounting base 3, a second screw through hole 602 can be provided in the camera bracket 6, and a second screw post can be provided in the mounting box 9. The fastener 11 passes through the third screw through hole, the second screw through hole 602, and the mounting hole in sequence and is then fastened to the second screw post, thereby fixing the motherboard assembly and the camera assembly to the inner and outer sides of the outer door 1 respectively.

[0063] In one embodiment, the camera motherboard 7 is fixed to the mounting box 9 by screws and / or clips. More specifically, the mounting box 9 is provided with studs, and the camera motherboard 7 is fixed to the studs by screws, so that there are gaps between the two sides of the camera motherboard 7 and the bottom surface of the mounting box 9 and the mounting cover 10, thereby ensuring that cold air can flow through both sides of the camera motherboard 7 to fully dissipate heat from the camera motherboard 7.

[0064] In one embodiment, such as Figure 3 As shown, the fixed box 9 is provided with a guide post 904 and the fan is provided with a guide hole. The guide post 904 is inserted into the guide hole to position the fan. After the fixed cover 10 is connected to the fixed box 9, the fixed cover 10 presses the fan tightly, thereby fixing the fan in the fixed box 9.

[0065] In one embodiment, the decorative cover 4 is connected to the fixing seat 3 by a snap-fit ​​structure; and / or, the fixing cover 10 is connected to the fixing box 9 by a snap-fit ​​structure.

[0066] In this embodiment, the decorative cover 4 and the fixing base 3 are connected by a snap-fit ​​structure. During assembly, the fastener 11 passes through the outer door 1 to connect the fixing base 3, the camera bracket 6, and the fixing box 9 into one unit, and then the decorative cover 4 is snapped onto the fixing base 3, which can improve assembly efficiency. The fixing cover 10 and the fixing box 9 are connected by a snap-fit ​​structure. During assembly, the fastener 11 passes through the outer door 1 to connect the fixing base 3, the camera bracket 6, and the fixing box 9 into one unit, and then the fixing cover 10 is snapped onto the fixing box 9, which can improve assembly efficiency.

[0067] In one specific embodiment, the decorative cover 4 is provided with a first buckle 401, and the side wall of the fixing base 3 is provided with a locking block 304. The first locking hole extends into the fixing base 3 and engages with the locking block 304. The first buckle 401 is not visible from the outside, making it more aesthetically pleasing.

[0068] In one specific embodiment, the fixing cover 10 is provided with a second buckle 1001, and the outer side wall of the fixing box 9 is provided with a protrusion 905, and the second buckle 1001 is engaged with the protrusion 905.

[0069] In one embodiment, the door assembly further includes a middle transparent piece 12, an upper frame 13, a left frame 14, and a right frame 15. The middle transparent piece 12, the outer door 1, the upper frame 13, the left frame 14, and the right frame 15 form a first heat dissipation channel 16. The main board assembly is disposed in the first heat dissipation channel 16. The upper frame 13 is provided with a first opening 1301 for fluid to flow out of the first heat dissipation channel 16. The first opening 1301 is adapted to communicate with the heat dissipation duct 22 on the top of the housing 21 of the cooking equipment.

[0070] In this embodiment, the middle transparent piece 12, the outer door 1, the upper frame 13, the left frame 14, and the right frame 15 form a first heat dissipation channel 16. The mainboard assembly is disposed in the first heat dissipation channel 16. The upper frame 13 has a first opening 1301 for fluid to flow out of the first heat dissipation channel 16. The first opening 1301 is adapted to communicate with the heat dissipation duct 22 at the top of the cooking equipment's housing 21. Therefore, cold air can enter the first heat dissipation channel 16 from below the door assembly. The cold air flows upward, cooling the door assembly, and finally flows out of the first heat dissipation channel 16 through the first opening 1301 of the upper frame 13 and into the heat dissipation duct 22 at the top of the housing 21. By setting the first heat dissipation channel 16, the high temperature of the cooking cavity 2101 can be prevented from being directly conducted to the internal area of ​​the door assembly. With bottom air intake and top air exhaust, the natural convection effect of hot and cold air allows the cooling fluid to flow smoothly from bottom to top through the entire first heat dissipation channel 16, forming a continuous and stable heat dissipation airflow and improving the overall heat dissipation efficiency of the door assembly. The first heat dissipation channel 16 works in conjunction with the airflow channel inside the fixing box 9 to form a dual heat dissipation system. This reduces the temperature of the door assembly itself and also reduces the heat radiation and conduction from the high temperature of the door assembly to the camera 2 and camera motherboard 7, thereby improving the overall operating temperature of the camera 2 and camera motherboard 7. In addition, the first heat dissipation channel 16 can evenly remove heat from various parts of the door assembly, reducing the temperature difference between the inside and outside and the top and bottom of the door assembly, reducing the thermal stress caused by uneven heating of the door assembly, and improving the structural reliability and safety of the door assembly.

[0071] Specifically, when the cooling fan 8 is working, the cold airflow outside the outer door 1 enters the first mounting housing through the first air inlet 301 to cool the camera 2. Then it flows out of the first mounting housing through the first air outlet 302, passes through the ventilation hole on the outer door 1, enters the second mounting housing through the second air inlet 901 to cool the camera motherboard 7, and is then sucked in by the cooling fan 8. Finally, it flows out of the second mounting housing through the second air outlet 902 and enters the first heat dissipation channel 16. It flows upward with the airflow in the first heat dissipation channel 16 and finally flows out of the first heat dissipation channel 16 through the first opening 1301 and enters the heat dissipation duct 22 on the top of the housing 21.

[0072] In one specific embodiment, the intermediate transparent element 12 is intermediate glass.

[0073] In one embodiment, there is a gap between the second mounting shell and the intermediate transparent element 12.

[0074] In this embodiment, by setting a gap between the second mounting shell and the intermediate transparent part 12, the airflow in the first heat dissipation channel 16 can be ensured to flow smoothly upward, making the first heat dissipation channel 16 and the channel for dissipating heat from the camera 2 and the camera motherboard 7 independent of each other. At the same time, the heat from the intermediate transparent part 12 can be prevented from being transferred to the camera motherboard 7 through the second mounting shell.

[0075] In one specific embodiment, the gap between the second mounting shell and the intermediate transparent part 12 is ≥3 mm.

[0076] In one embodiment, the second mounting shell and the upper frame 13 are connected by a positioning structure.

[0077] In this embodiment, the second mounting shell and the upper frame 13 are connected by a positioning structure to ensure that the assembly position of the second mounting shell is correct.

[0078] Specifically in one embodiment, such as Figures 3 to 5 As shown, the fixing box 9 of the second mounting shell is provided with a positioning insert 906, and the upper frame 13 is provided with an insertion port, into which the positioning insert 906 is inserted.

[0079] In this embodiment, the door assembly of the cooking equipment is assembled as follows: the camera 2 is fixed on the camera bracket 6, and the camera bracket 6 and the sealing gasket 5 are positioned by the positioning post 502 and the positioning hole 601, so that the camera 2, the camera bracket 6 and the sealing gasket 5 are connected as a whole. The camera main board 7 and the heat dissipation fan 8 are assembled in the fixing box 9. Then, the positioning insert 906 on the fixing box 9 is inserted into the socket of the upper frame 13. After that, the fastener 11 passes through the first screw through hole 903, the mounting hole and the second screw through hole 602 in sequence and is fastened to the first screw post 303. Finally, the decorative cover 4 is fastened on the fixing base 3 and the fixing cover 10 is fastened on the fixing box 9, so that the camera assembly, the main board assembly and the outer door 1 are connected as a whole.

[0080] In one embodiment, the door assembly further includes an inner transparent element 17, which, together with the middle transparent element 12, the upper frame 13, the left frame 14, and the right frame 15, forms a second heat dissipation channel 18, and the first opening 1301 communicates with the second heat dissipation channel 18.

[0081] In this embodiment, the inner transparent element 17, the middle transparent element 12, the upper frame 13, the left frame 14, and the right frame 15 form a second heat dissipation channel 18. The first opening 1301 communicates with the second heat dissipation channel 18. Cold air can enter the second heat dissipation channel 18 from below the door assembly. The cold air flows upward, cooling the inner transparent element 17 and the middle transparent element 12. Finally, it flows out of the first heat dissipation channel 16 through the first opening 1301 of the upper frame 13 and enters the heat dissipation duct 22 at the top of the housing 21. By setting the second heat dissipation channel 18, the temperature of the door assembly can be further reduced, and the high temperature of the cooking cavity 2101 can be further blocked from being transferred to the second mounting shell. This avoids the heat radiation and heat conduction of the camera 2 and the camera motherboard 7 caused by the high temperature of the door assembly, thereby improving the overall working environment temperature of the camera 2 and the camera motherboard 7.

[0082] In one specific embodiment, the door assembly further includes a lower frame 26, which is connected to the bottom of the left frame 14 and the right frame 15. The lower frame 26 is provided with an air inlet that communicates with the first heat dissipation channel 16 and the second heat dissipation channel 18.

[0083] In one specific embodiment, the inner transparent element 17 is an inner glass.

[0084] In one embodiment, the camera motherboard 7 is equipped with a temperature sensor 19, and the temperature sensor 19 and the cooling fan 8 are adapted to communicate with the control motherboard 20 of the cooking equipment.

[0085] In this embodiment, by setting a temperature sensor 19 on the camera motherboard 7, the ambient temperature of the camera motherboard 7 can be monitored in real time, and the operation of the cooling fan 8 and its power can be controlled according to the temperature detected by the temperature sensor 19. This can save energy while ensuring that the temperature of the camera motherboard 7 does not get too high.

[0086] In one specific embodiment, the outer surface of the outer door 1 is also provided with a door handle 27.

[0087] According to an embodiment of the present invention, in a second aspect, a cooking device is also provided, including a housing 21 and a door assembly of the cooking device provided in the above embodiment. The housing 21 has a cooking cavity 2101, a heat dissipation duct 22 is provided on the top of the housing 21, and an exhaust fan 23 is provided within the heat dissipation duct 22; the door assembly is closably connected to the housing 21.

[0088] In this embodiment, when the cooling fan 8 is working, the cold airflow outside the outer door 1 enters the first mounting housing through the first air inlet 301 to cool the camera 2. Then, it flows out of the first mounting housing through the first air outlet 302, passes through the ventilation holes on the outer door 1, enters the second mounting housing through the second air inlet 901, and finally flows out of the second mounting housing through the second air outlet 902. Under the suction of the exhaust fan 23, it flows upwards into the door assembly, enters the cooling duct 22, and finally exits from the cooling duct 22. Since the camera motherboard 7 is located inside the second mounting housing and in the airflow path, the cold airflow cools the camera motherboard 7 as it flows through the second mounting housing. By utilizing the cold air outside the outer door 1 to cool the camera 2 and camera motherboard 7, the working condition of the camera 2 and camera motherboard 7 can be better improved, their service life extended, and the shooting quality of the camera 2 ensured to be unaffected by high temperatures.

[0089] In one specific embodiment, the door assembly includes a middle transparent part 12, an inner transparent part 17, an upper frame 13, a left frame 14, and a right frame 15. The middle transparent part 12, the outer door 1, the upper frame 13, the left frame 14, and the right frame 15 form a first heat dissipation channel 16. The main board assembly is disposed in the first heat dissipation channel 16. The inner transparent part 17, the middle transparent part 12, the upper frame 13, the left frame 14, and the right frame 15 form a second heat dissipation channel 18. The upper frame 13 is provided with a first opening 1301 for fluid to flow out of the first heat dissipation channel 16 and the second heat dissipation channel 18. The first opening 1301 is connected to the heat dissipation duct 22 on the top of the housing 21.

[0090] More specifically, the heat dissipation duct 22 includes a lower duct 2201 and an upper duct. The lower duct 2201 is connected to the first opening 1301. The exhaust fan 23 is located at the end of the lower duct 2201 away from the door assembly and is connected to the upper duct.

[0091] Specifically, the exhaust fan 23 is a cross-flow fan.

[0092] Specifically, the camera motherboard 7 is equipped with a temperature sensor 19, and the cooking device includes a control motherboard 20. The control motherboard 20 is communicatively connected to the temperature sensor 19 and the cooling fan 8. Based on the temperature detected by the temperature sensor 19, the control motherboard 20 controls whether the cooling fan 8 works and the power of the fan when it works, which can save energy while ensuring that the temperature of the camera motherboard 7 does not get too high.

[0093] Specifically, if the temperature detected by the temperature sensor 19 is less than or equal to the first preset temperature, the control board 20 controls the cooling fan 8 to not work; if the temperature detected by the temperature sensor 19 is greater than the first preset temperature but less than the second preset temperature, the control board 20 controls the cooling fan 8 to work at the first power; if the temperature detected by the temperature sensor 19 is greater than or equal to the second preset temperature, the control board 20 controls the cooling fan 8 to work at the second power.

[0094] Specifically, the first preset temperature is 70℃, the second preset temperature is 81℃, the cooling fan 8 operates at the first power and the speed of the cooling fan 8 is 2000r / min, and the cooling fan 8 operates at the second power and the speed of the cooling fan 8 is 3000r / min.

[0095] Specifically, the cooking cavity 2101 is equipped with a grill 24, a grease tray 25, etc.

[0096] In one specific embodiment, the cooking device is one of a steamer, an oven, a steam oven, or a microwave oven.

[0097] According to an embodiment of the present invention, in a third aspect, a control method for a cooking apparatus is also provided, applied to the cooking apparatus provided in the above embodiments, the control method comprising: Obtain the ambient temperature T of the camera motherboard 7; The operating temperature T of the camera motherboard 7 determines whether the cooling fan 8 works and its power output.

[0098] In this embodiment, energy saving is achieved while ensuring that the temperature of the camera motherboard 7 does not get too high.

[0099] Specifically in one embodiment, such as Figure 9 As shown, the operation of the cooling fan 8 and its power consumption are controlled based on the ambient temperature T of the camera motherboard 7, including: If T ≤ the first preset temperature, control the cooling fan 8 to not work; If the first preset temperature < T < the second preset temperature, control the cooling fan 8 to operate at the first power. If T ≥ the second preset temperature, control the cooling fan 8 to work at the second power, which is higher than the first power.

[0100] In this embodiment, if the ambient temperature of the camera motherboard 7 is less than or equal to the first preset temperature, it indicates that the cooking device is in a low-temperature stage, and the cooling fan 8 is not operated to save energy. If the ambient temperature of the camera motherboard 7 is greater than the first preset temperature but less than the second preset temperature, the ambient temperature of the camera motherboard 7 has little impact on the temperature resistance of the camera motherboard 7, and the cooling fan 8 is controlled to operate at the first power economic mode. The cold air flow outside the outer door 1 enters the first mounting shell through the first air inlet 301 to cool down the camera 2, and then flows out of the first mounting shell through the first air outlet 302. After passing through the ventilation hole on the outer door 1, it enters the second mounting shell through the second air inlet 901 to cool down the camera motherboard 7, and then flows out of the second mounting shell through the second air outlet 902. Under the suction of the exhaust fan 23, it flows upward into the door assembly, enters the cooling air duct 22, and finally is discharged outside the cooking device. If the ambient temperature of the camera motherboard 7 is greater than or equal to the second preset temperature, the ambient temperature will have a certain impact on the temperature resistance of the camera motherboard 7. The cooling fan 8 will be controlled to run at full load with the second power. The cold air flow outside the outer door 1 will enter the first mounting shell through the first air inlet 301 to cool down the camera 2. Then it will flow out of the first mounting shell through the first air outlet 302, pass through the ventilation hole on the outer door 1, and enter the second mounting shell through the second air inlet 901 to cool down the camera motherboard 7. After cooling down the camera motherboard 7, it will flow out of the second mounting shell through the second air outlet 902. Under the suction of the exhaust fan 23, it will flow upward into the door assembly, enter the cooling air duct 22, and finally be discharged outside the cooking equipment.

[0101] This control method controls the cooling fan 8 to not work when T ≤ the first preset temperature; and controls the cooling fan 8 to work at the first power when the first preset temperature < T < the second preset temperature, thus achieving energy-saving effects for household kitchen appliances such as ovens.

[0102] In one specific embodiment, the first preset temperature is 70°C, the second preset temperature is 81°C, the cooling fan 8 operates at the first power with a rotation speed of 2000 r / min, and the cooling fan 8 operates at the second power with a rotation speed of 3000 r / min. It should be noted that this embodiment does not specifically limit the first preset temperature, the second preset temperature, the first power, and the second power; these can be reasonably determined based on the specific type and temperature resistance of the camera motherboard 7.

[0103] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by this application.

Claims

1. A door assembly for a cooking appliance, characterized in that, include: The outer door (1) is equipped with a ventilation opening (101); A camera assembly is located on the outside of the outer door (1). The camera assembly includes a first mounting shell and a camera (2) disposed in the first mounting shell. The first mounting shell is provided with a first air inlet (301) and a first air outlet (302). The motherboard assembly is located inside the outer door (1). The motherboard assembly includes a second mounting shell, a camera motherboard (7) disposed inside the second mounting shell, and a cooling fan (8). The second mounting shell is provided with a second air inlet (901) and a second air outlet (902). The second air inlet (901) is connected to the first air outlet (302) through the ventilation port (101). When the cooling fan (8) is working, the airflow outside the outer door (1) flows through the first mounting shell and then enters the second mounting shell through the ventilation port (101), and flows out of the second mounting shell through the second air outlet (902). The camera motherboard (7) is located in the airflow path.

2. The door assembly of the cooking equipment according to claim 1, characterized in that, Along the direction of airflow, the camera motherboard (7) is located upstream of the cooling fan (8).

3. The door assembly of the cooking equipment according to claim 1, characterized in that, The first mounting housing includes a fixing base (3) and a decorative cover (4). The camera assembly also includes a camera bracket (6). The camera (2) is fixed to the camera bracket (6). The camera bracket (6) is located inside the fixing base (3). The first air outlet (302) is located at the end of the fixing base (3) away from the decorative cover (4) and is formed by the gap between the camera bracket (6) and the fixing base (3).

4. The door assembly of the cooking equipment according to claim 3, characterized in that, The camera assembly also includes a sealing gasket (5), which is disposed between the camera bracket (6) and the outer door (1). The sealing gasket (5) has a first through hole (501) connecting the first air outlet (302) and the ventilation opening (101).

5. The door assembly of the cooking apparatus according to claim 3, characterized in that, The second mounting housing includes a fixing box (9) and a fixing cover (10). Fasteners (11) pass through the outer door (1) to connect the fixing seat (3), the camera bracket (6), and the fixing box (9) into one unit.

6. The door assembly of the cooking apparatus according to claim 5, characterized in that, The decorative cover (4) and the fixing seat (3) are connected by a snap-fit ​​structure; And / or, the fixing cover (10) and the fixing box (9) are connected by a snap-fit ​​structure.

7. The door assembly of the cooking apparatus according to any one of claims 1 to 6, characterized in that, The door assembly also includes a middle transparent piece (12), an upper frame (13), a left frame (14), and a right frame (15). The middle transparent piece (12), the outer door (1), the upper frame (13), the left frame (14), and the right frame (15) form a first heat dissipation channel (16). The main board assembly is located in the first heat dissipation channel (16). The upper frame (13) is provided with a first opening (1301) for fluid to flow out of the first heat dissipation channel (16). The first opening (1301) is adapted to communicate with the heat dissipation duct (22) at the top of the cabinet (21) of the cooking equipment.

8. The door assembly of the cooking apparatus according to claim 7, characterized in that, There is a gap between the second mounting shell and the intermediate transparent part (12).

9. The door assembly of the cooking apparatus according to claim 7, characterized in that, The second mounting shell is inserted into the upper frame (13) through a positioning structure.

10. The door assembly of the cooking apparatus according to claim 7, characterized in that, The door assembly also includes an inner transparent part (17), which together with the middle transparent part (12), the upper frame (13), the left frame (14), and the right frame (15) form a second heat dissipation channel (18), and the first opening (1301) is connected to the second heat dissipation channel (18).

11. The door assembly of the cooking apparatus according to any one of claims 1 to 6, 8 to 10, characterized in that, The camera motherboard (7) is equipped with a temperature sensor (19), and the temperature sensor (19) and the cooling fan (8) are adapted to communicate with the control motherboard (20) of the cooking equipment.

12. A cooking device, characterized in that, include: The box body (21) is provided with a cooking cavity (2101), and the top of the box body (21) is provided with a heat dissipation duct (22), and an exhaust fan (23) is provided in the heat dissipation duct (22). The door assembly of the cooking apparatus according to any one of claims 1 to 11 is closably connected to the housing (21).

13. A method for controlling a cooking device, characterized in that, The control method, applied to the cooking apparatus of claim 12, comprises: Obtain the ambient temperature T of the camera motherboard (7); The operating temperature T of the camera motherboard (7) is used to control whether the cooling fan (8) works and the power when it is working.

14. The control method for the cooking equipment according to claim 13, characterized in that, The control of whether the cooling fan (8) works and its power during operation based on the ambient temperature T of the camera motherboard (7) includes: If T ≤ the first preset temperature, the cooling fan (8) is controlled to not work; If the first preset temperature < T < the second preset temperature, control the cooling fan (8) to work at the first power; If T ≥ the second preset temperature, control the cooling fan (8) to work at the second power, where the second power is higher than the second power.

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