A machine door assembly and cooking apparatus

Abstract

The application belongs to the technical field of electrical appliances, and specifically discloses a machine door assembly and a cooking device. The machine door assembly comprises a machine door and a door handle. The machine door is provided with a door cold air channel. The door handle is installed on the top of the machine door and has an extended state of extending forward relative to the machine door and a retracted state of retracting relative to the extended state. A handle cooling channel is arranged at the door handle. The handle cooling channel can be communicated with the door cold air channel to introduce cooling gas into the handle cooling channel. The cooking device comprises the machine door assembly. The machine door assembly and the cooking device disclosed by the application can effectively reduce the risk of scalding caused by the excessively high temperature of the door handle during cooking and improve the use safety of the machine door assembly and the cooking device.

Description

Technical Field

[0001] This invention relates to the field of electrical technology, and more particularly to a door assembly and cooking equipment. Background Technology

[0002] Steam ovens, electric steamers, and other steam cooking equipment are kitchen appliances that use heating elements to convert water into high-temperature steam for cooking food. They can effectively meet users' needs for steaming, baking, and other cooking methods, and improve the convenience of cooking.

[0003] To improve the ease of use of steam cooking equipment, some models feature retractable door handles at the top of the door. When not in use, the handle is flush with the front of the door, preventing accidental bumps. When needed, the handle extends for easy opening and closing. However, during operation, the high internal temperature of the cooking equipment can cause the hot steam to transfer heat to the door handle, potentially leading to burns and a reduced user experience.

[0004] Therefore, there is an urgent need for a door assembly and cooking equipment to solve the above-mentioned technical problems. Summary of the Invention

[0005] The purpose of this invention is to provide a door assembly and cooking equipment that can satisfy the use of movable door handles on cooking equipment while reducing the risk of excessive temperature rise of the door handles during cooking, thereby improving the safety and user experience of the door assembly and cooking equipment.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A door assembly includes a door and a door handle, the door having a cold air duct, the door handle being mounted on the top of the door and having an extended state that extends forward relative to the door and a retracted state that retracts relative to the extended state.

[0008] The door handle is provided with a handle cooling channel, which can be connected to the door cold air channel to introduce cooling gas into the handle cooling channel.

[0009] As an optional technical solution for the door assembly, the handle cooling channel is located inside the door handle.

[0010] As an optional technical solution for the door assembly, the handle cooling channel extends in the left-right direction.

[0011] As an optional technical solution for a door assembly, the door handle has a handle groove that runs vertically through the door. The door handle has two mounting arms located on the left and right sides of the handle groove and a gripping arm connected between the two mounting arms. The handle cooling channel extends from one of the mounting arms along the gripping arm to the other mounting arm.

[0012] As an optional technical solution for the door assembly, the front and rear sides of the handle groove are closed, and the grip arm is located on the rear and / or front side of the handle groove.

[0013] As an optional technical solution for the door assembly, the lower surfaces of both mounting arms are provided with handle cooling air inlets, and the gripping arm is provided with handle cooling air outlets. Both the handle cooling air inlets and handle cooling air outlets are connected to the handle cooling channel.

[0014] Alternatively, both mounting arms are provided with handle cooling air outlets, and the gripping arm is provided with handle cooling air inlets. Both the handle cooling air outlets and the handle cooling air inlets are connected to the handle cooling channel.

[0015] As an optional technical solution for the door assembly, the door handle is provided with a handle steam channel, the door is provided with a door steam channel, the handle steam channel is separated from the handle cooling channel, and the door steam channel is separated from the door cold air channel; when the door handle is in the retracted state, the handle steam channel and the door steam channel are connected to allow steam discharged from the inner liner to be introduced into the door steam channel.

[0016] As an optional technical solution for a door assembly, the door handle has a handle groove that runs vertically through the door. The door handle includes two mounting arms located on the left and right sides of the handle groove, respectively. Each of the two mounting arms is provided with a handle steam channel. The handle cooling channel has two handle cold air inlets, which are respectively located on the lower side of the two mounting arms.

[0017] As an optional technical solution for the door assembly, the distance between the handle steam outlet and the handle cold air inlet of the handle steam channel on the same mounting arm in the left-right direction is L1, and the length of the mounting arm in the left-right direction is L0, where L1≤0.5L0.

[0018] As an optional technical solution for the machine door assembly, a door fan is provided at the machine door, and the door fan is used to guide the cooling gas into the door cold air duct.

[0019] As an optional technical solution for the door assembly, the door fan is installed at the air inlet end of the door cold air duct.

[0020] As an optional technical solution for the door assembly, a rear cold air outlet is provided on the top rear side of the door, and an upper cold air outlet is provided at the top of the door. The rear cold air outlet is used to connect the door cold air channel and the body cold air channel, and the upper cold air outlet can be connected to the handle cooling channel to introduce the cooling gas into the handle cooling channel.

[0021] As an optional technical solution for the door assembly, when the door handle is in the extended state, the handle cooling channel is connected to the door cooling channel through the upper cooling air outlet.

[0022] As an optional technical solution for the door assembly, when the door handle is in the retracted state, the handle cooling channel and the door cold air channel are separated.

[0023] As an optional technical solution for the door assembly, the handle cooling channel has a handle cold air outlet, and when the door handle is in the extended state, the handle cold air outlet is spaced apart on the front side of the door.

[0024] As an optional technical solution for the door assembly, the cold air outlet of the handle is located on the lower side of the door handle.

[0025] As an optional technical solution for the door assembly, when the door handle is in the retracted state, the handle cooling channel is connected to the door cooling channel through the upper cooling air outlet.

[0026] As an optional technical solution for the door assembly, the handle cooling channel has a handle cold air outlet that runs through the lower side of the door handle, and the door has a door exhaust channel that is separated from the door cold air channel. When the door handle is in the retracted state, the handle cold air outlet is connected to the door exhaust channel.

[0027] As an optional technical solution for the door assembly, the door exhaust channel and the door cold air channel are separated in the front-to-back direction;

[0028] And / or, the door exhaust channel and the door cold air channel are separated by a heat-insulating structure.

[0029] As an optional technical solution for the door assembly, the upper rear side of the door cold air channel is closed, the handle cooling channel has a handle cold air inlet and a handle cold air outlet, the handle cold air inlet passes through the lower side of the door handle, the handle cold air outlet passes through the rear side of the door handle, and the handle cold air inlet is connected to the door cold air channel.

[0030] As an optional technical solution for the door assembly, the handle cooling channel is formed by the door handle and the top of the door.

[0031] As an optional technical solution for the door assembly, the door handle includes a handle panel extending in the left-right direction. When the door handle is in the retracted state, the upper end of the handle panel is used to abut against the control device, and the lower side of the handle panel abuts against the top of the door, so that the handle panel, the door, and the control device together form the handle cooling channel.

[0032] A cooking appliance includes a body having an inner pot with a steam vent, characterized in that it includes a door assembly as described above.

[0033] As an optional technical solution for a cooking appliance, a steam exhaust device is provided between the inner liner and the casing of the appliance body. The steam exhaust device has a steam passage and a cold air passage, and the air outlet of the cold air passage is connected to the cold air passage.

[0034] The beneficial effects of this invention are as follows:

[0035] The door assembly provided by this invention features a door handle with both retracted and extended states. When the user does not need to use the door handle for opening and closing, the handle can be switched to the retracted state to prevent it from protruding from the front of the door and causing injury, thus improving the safety of the cooking equipment. When the user needs to use the door handle, it can be extended to meet their needs. Furthermore, a door cooling duct is incorporated inside the door, providing cooling gas to the main cooling duct within the machine body. This allows the door cooling duct to be designed within the door's thickness, simplifying the design of the cold air intake structure. Finally, a handle cooling duct is provided on the door handle, allowing cooling gas to pass through and cool the handle, preventing burns caused by overheating during cooking and improving the safety and reliability of the door assembly.

[0036] The cooking equipment provided by the present invention, by adopting the above-mentioned door component, enables the use of a telescopic door handle on the cooking equipment, and can improve the safety and user experience of the cooking equipment. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the disassembled structure of the cooking device provided in Embodiment 1 of the present invention;

[0038] Figure 2 This is a partial cross-sectional view of the cooking device provided in Embodiment 1 of the present invention when the door handle is in the retracted state;

[0039] Figure 3This is a partial cross-sectional view of the cooking device provided in Embodiment 1 of the present invention with the door handle in the extended state;

[0040] Figure 4 This is a schematic diagram of the structure of the door assembly provided in Embodiment 1 of the present invention;

[0041] Figure 5 This is a schematic diagram of the disassembled structure of the door assembly provided in Embodiment 1 of the present invention;

[0042] Figure 6 This is a cross-sectional view of the door assembly provided in Embodiment 1 of the present invention;

[0043] Figure 7 yes Figure 6 A magnified view of a section at point I;

[0044] Figure 8 This is a longitudinal sectional view of the door assembly provided in Embodiment 1 of the present invention;

[0045] Figure 9 yes Figure 8 A magnified view of a section at point J;

[0046] Figure 10 This is a cross-sectional view of the door handle provided in Embodiment 2 of the present invention;

[0047] Figure 11 This is a cross-sectional view of the door assembly provided in Embodiment 2 of the present invention;

[0048] Figure 12 This is a partial longitudinal sectional view of the cooking device provided in Embodiment 3 of the present invention when the door handle is in the retracted state;

[0049] Figure 13 This is a cross-sectional view of the door assembly provided in Embodiment 3 of the present invention;

[0050] Figure 14 This is a schematic diagram of the door handle structure provided in Embodiment 4 of the present invention;

[0051] Figure 15 This is a front view of the door assembly provided in Embodiment 4 of the present invention;

[0052] Figure 16 yes Figure 15 Sectional view along the AA direction;

[0053] Figure 17 yes Figure 15 Sectional view along the BB direction;

[0054] Figure 18 yes Figure 17 Cross-sectional view of the structure with the door handle extended;

[0055] Figure 19 yes Figure 15 A partial sectional view along the CC direction;

[0056] Figure 20 yes Figure 19 A magnified view of a section at point K;

[0057] Figure 21 yes Figure 15 Sectional view along the DD direction;

[0058] Figure 22 yes Figure 21 A magnified view of a section at point L;

[0059] Figure 23 This is a partial structural schematic diagram of the door assembly provided in Embodiment 4 of the present invention;

[0060] Figure 24 This is a partial structural schematic diagram of the door assembly provided in Embodiment 5 of the present invention;

[0061] Figure 25 This is a cross-sectional schematic diagram of the door assembly provided in Embodiment 5 of the present invention;

[0062] Figure 26 This is a schematic diagram of the door handle structure provided in Embodiment Six of the present invention;

[0063] Figure 27 This is a cross-sectional view of the door handle provided in Embodiment Six of the present invention;

[0064] Figure 28 This is a partial structural cross-sectional view of the door assembly provided in Embodiment 6 of the present invention when the door handle is in the retracted state;

[0065] Figure 29 This is a cross-sectional view of the door assembly provided in Embodiment Six of the present invention;

[0066] Figure 30 This is a partial structural schematic diagram of the door assembly provided in Embodiment 8 of the present invention;

[0067] Figure 31 yes Figure 30 A magnified view of a section at point M.

[0068] The markings in the image are as follows:

[0069] 100. Door assembly; 200. Steam exhaust device; 210. Exhaust hood; 2101. Steam passage in the machine body; 2102. Cold air passage in the machine body; 220. Fan in the machine body; 300. Inner liner; 400. Machine casing; 500. Control device;

[0070] 1. Door handle; 11. Handle body; 111. Grip arm; 112. Mounting arm; 113. Handle cooling channel; 1131. Main channel; 1132. Side channel; 1133. Handle cold air inlet; 1134. Handle cold air outlet; 114. Handle steam channel; 1141. Handle steam inlet; 1142. Handle steam outlet; 115. Handle groove; 12. Handle panel;

[0071] 2. Handle bracket; 21. Top plate of the frame; 211. Top air vent; 212. Steam connection hole; 22. Side plate of the frame; 221. Side ventilation hole; 23. Mounting part; 24. Protruding rib part;

[0072] 3. Duct partition assembly; 31. Duct frame; 311. Outer frame; 3111. Door steam inlet; 3112. Upper cold air outlet; 3113. Cold air exhaust vent; 312. Inner frame; 3121. Duct connection port; 313. Connecting plate; 314. Positioning rib; 315. Positioning protrusion; 32. Partition plate; 33. Steam pipe; 34. Top sealing plate; 35. Side sealing plate; 351. Protrusion; 36. Rear baffle;

[0073] 4. Machine door; 41. Outer door; 42. Inner door; 43. Door bracket; 44. Elastic strip;

[0074] 5. Radiator; 51. Heat dissipation fins; 52. Extension plate; 53. Mounting plate; 531. Airflow hole; 54. Airflow channel;

[0075] 6. Handle drive assembly; 7. Door fan;

[0076] 10. Door steam passage; 20. Door cold air passage; 201. Steam heat dissipation passage; 202. Door heat dissipation passage; 203. Top air duct; 30. Door exhaust passage; 40. Door rear air vent. Detailed Implementation

[0077] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0078] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0079] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0080] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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 present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0081] Example 1

[0082] This embodiment provides a cooking device that can heat food using steam, and can condense and release the steam generated during operation, improving the safety and reliability of the cooking device. The cooking device provided in this embodiment can be, but is not limited to, a steam oven, an electric steamer, etc.

[0083] like Figure 1As shown, the cooking equipment includes a body, a door assembly 100, a control device 500, and a steam supply device. The body includes a casing 400 and an inner pot 300 installed inside the casing 400, the inner pot 300 having a cooking cavity with a front opening. The door assembly 100 is located on the front of the body, and its lower end is rotatably connected to the body, allowing the door assembly 100 to switch between a closed state (closing the cooking cavity opening) and an open state (opening the cooking cavity). The steam supply device supplies hot steam to the inner pot 300 to cook the food inside. The control device 500 is installed on the front of the body and above the door assembly 100, and is used by the user to operate the cooking equipment and control its operation. The steam supply device is communicatively connected to the control device 500.

[0084] like Figures 1 to 3 As shown, to facilitate user operation of the door assembly 100, in this embodiment, the door assembly 100 includes a door 4 and a door handle 1. The lower end of the door 4 is rotatably connected to the machine body, and the door handle 1 is located at the top of the door 4 and can switch between an extended state relative to the door 4 and a retracted state relative to the extended state. Therefore, when the door handle 1 is not needed, it is in the retracted state, and the front side of the door handle 1 does not protrude from the front side of the door 4, ensuring the flatness of the door assembly 100 and reducing the probability of the door handle 1 bumping into the user. When the door handle 1 is in the extended state, it protrudes forward relative to the door 4, making it convenient for the user to grip the door handle 1 and thus perform the door opening and closing operation.

[0085] Because the cooking equipment requires a continuous supply of hot steam to the inner pot 300 during the cooking process, in order to maintain the temperature within the inner pot 300, and at the same time, the steam needs to be released to prevent excessive pressure within the inner pot 300. To facilitate the release of steam from the inner pot 300, a steam vent is provided on the inner pot 300.

[0086] To achieve steam discharge and condensation, the machine body is equipped with an internal steam channel 2101 and a machine body cold air channel 2102. The steam discharge port is connected to the machine body steam channel 2101. The machine body is also equipped with an internal fan 220. The air inlet of the internal fan 220 is connected to the machine body cold air channel 2102, and the air outlet of the internal fan 220 is connected to the machine body steam channel 2101. When the internal fan 220 is running, external cooling gas enters the internal cold air channel 2102 and enters the internal steam channel 2101 through the internal fan 220 to achieve condensation and heat dissipation of steam and promote the discharge of steam from the steam discharge port to the internal steam channel 2101.

[0087] In this embodiment, the door 4 has a door cooling air passage 20, the air outlet of which is connected to the body cooling air passage 2102, so that cooling gas can enter the body cooling air passage 2102 through the door cooling air passage 20. The door handle 1 is provided with a handle cooling passage 113, which can be connected to the door cooling air passage 20 to introduce cooling gas into the door handle 1.

[0088] The door assembly 100 and cooking equipment provided in this embodiment, by setting a door handle 1 with a retracted state and an extended state, allow the user to switch the door handle 1 to the retracted state when not using it to open or close the door, so that the door handle 1 does not protrude from the front of the door 4 and cause the user to bump into it, thus improving the safety of the cooking equipment. When the user needs to use the door handle 1, the door handle 1 can be extended to meet the user's needs. By setting a door cold air channel 20 inside the door 4, the door cold air channel 20 can provide cooling gas to the body cold air channel 2102 in the body, thus utilizing the thickness of the door 4 to set the door cold air channel 20, simplifying the setting of the cold air intake structure of the cooking equipment. By setting a handle cooling channel 113 on the door handle 1, cooling gas can be introduced into the handle cooling channel 113 to cool the door handle 1, avoiding the door handle 1 from getting too hot during cooking and causing burns when the user touches the door handle 1, thus improving the safety and reliability of the door assembly 100.

[0089] To facilitate the placement of the unit's fan 220 and the unit's cold air passage 2102, a steam exhaust device 200 is provided between the casing 400 and the inner liner 300. The steam exhaust device 200 includes an exhaust hood 210 and the aforementioned unit fan 220. The exhaust hood 210 has separate unit steam passages 2101 and unit cold air passages 2102. The unit fan 220 is installed at the exhaust hood 210. Preferably, a steam condensation component is provided within the unit steam passage 2101 to enhance the condensation and heat dissipation of steam, reducing the steam content and temperature discharged from the cooking equipment.

[0090] The steam exhaust device 200 is preferably located between the top of the inner liner 300 and the top of the casing 400, so that the height of the front end of the steam exhaust device 200 is matched with the height of the top of the door 4, which facilitates the connection between the door cold air channel 20 and the body cold air channel 2102; at the same time, it can also reduce the width of the cooking equipment in the front-back direction and the left-right direction.

[0091] It is understandable that the descriptions of directional words such as "front," "back," "up," and "down" in the preceding and following text are all based on the position of the cooking equipment relative to the user when it is in use. That is, the front side of a structure refers to the side of the structure facing the user, the back side or the side away from the user, the left side of a structure refers to the side of the structure closer to the user's left hand when the user is facing the cooking equipment, and the right side refers to the side of the structure closer to the user's right hand when the user is facing the cooking equipment.

[0092] It is worth noting that the structure of the main body, control device 500, steam emission device 200 and steam supply device can be set with reference to the existing technology. This is not the focus of this invention and will not be described in detail here.

[0093] In this embodiment, the handle cooling channel 113 is disposed inside the door handle 1, which facilitates the arrangement of the shape, size and dimensions of the handle cooling channel 113, and facilitates the design of the connection position between the handle cooling channel 113 and the door cold air channel 20, thereby improving the design flexibility of the handle cooling channel 113.

[0094] In this embodiment, the top of the door 4 is provided with an upper cold air outlet 3112, the lower side of the door handle 1 is provided with a handle cold air inlet 1133, and the rear side of the door handle 1 is provided with a handle cold air outlet 1134. The handle cold air inlet 1133 is connected to the door cold air channel 20 through the upper cold air outlet 3112, and the handle cold air outlet 1134 is connected to the body cold air channel 2102. External cooling gas enters the body cold air channel 2102 sequentially through the door cold air channel 20 and the handle cooling channel 113. That is, in this embodiment, the handle cooling channel 113 serves as part of the cold air intake channel of the body fan 220.

[0095] To improve the convenience of steam discharge, in this embodiment, a door steam passage 10 is provided inside the door 4. The door steam passage 10 is separated from the door cold air passage 20 and is connected to the body steam passage 2101. That is, when the body fan 220 is running, the steam discharged from the inner liner 300 enters the door steam passage 10 through the body steam passage 2101 and is discharged below the door 4. In other embodiments, the door steam passage 10 may not be provided inside the door 4, and the steam discharged from the body steam passage 2101 is discharged to the outside of the body without passing through the door assembly 100.

[0096] To prevent the mixing of inlet and outlet air at the top of the door 4, in this embodiment, a rear air vent 40 is provided on the top rear side of the door 4, and the door steam passage 10 is connected to the body steam passage 2101 through the rear air vent 40. That is, in this embodiment, the rear air vent 40 is the steam inlet of the door steam passage 10.

[0097] Preferably, the door steam passage 10 and the door cold air passage 20 are arranged side by side in the front-to-back direction, and the door steam passage 10 is located behind the door cold air passage 20, so as to facilitate the connection between the door steam passage 10 and the door rear air vent 40.

[0098] like Figures 3 to 5 As shown, in this embodiment, the door handle 1 includes a handle body 11 and a handle panel 12 disposed on the front side of the handle body 11. A handle cooling channel 113 is provided on the handle body 11. The handle panel 12 enhances the aesthetic appearance of the door handle 1 and better ensures that the shape of the door handle 1 matches the shape of the machine door 4 when it is in the retracted state, thus improving the ease of cleaning the door handle 1. Both the left and right sides of the handle panel 12 extend outwards from the handle body 11, and the left and right sides of the handle panel 12 are flush with the left and right ends of the front side of the machine door 4.

[0099] The door handle 1 has a handle groove 115 extending vertically to facilitate the user's grip on the door handle 1. In this embodiment, the front and rear sides of the handle groove 115 are closed, and grip arms 111 are provided on both the front and rear sides of the handle groove 115. In other embodiments, the handle groove 115 may be closed only on the front side and open on the rear side.

[0100] The door handle 1 has mounting arms 112 located on the left and right sides of the handle groove 115 and a gripping arm 111 connected between the two mounting arms 112. In this embodiment, the two mounting arms 112 are respectively provided with handle cooling channels 113 to reduce interference between the handle cooling channels 113 and the door handle 1, and to ensure the structural strength and rigidity of the door handle 1.

[0101] In this embodiment, the door handle 1 is slidably mounted on the top of the door 4 along its thickness direction, allowing the door handle 1 to rotate between an extended state and a retracted state. This reduces the space required for the door handle 1 to move and minimizes interference between the door handle 1 and the control device 500 and the door 4. In other embodiments, the door handle 1 can also be rotatably mounted to achieve rotational switching between an extended state and a retracted state.

[0102] Preferably, when the door handle 1 is in the extended state, the handle cooling air inlet 1133 is spaced apart on the front side of the door 4, thereby connecting the handle cooling channel 113 with the front space of the door assembly 100. Thus, when the door handle 1 is in the extended state, the cooling gas directly enters the body cooling air channel 2102 through the handle cooling air inlet 1133 and the handle cooling channel 113, and can also enter the body cooling air channel 2102 through the gap between the door handle 1 and the control device 500, shortening the air intake path of the cooling gas and increasing the air intake volume of the cooling air.

[0103] To improve the ease of installation of the door handle 1, in this embodiment, the door assembly further includes a handle bracket 2, which is mounted on the top of the door 4, and the door handle 1 is movably mounted on the handle bracket 2. Specifically, the door handle 1 can be slidably mounted on the handle bracket 2 along the thickness direction of the door 4.

[0104] The appliance door 4 includes an outer door 41, an inner door 42 spaced apart inside the outer door 41, and a door support 43 sandwiched between the inner door 42 and the outer door 41. Two door supports 43 are spaced apart in the left-right direction. The inner door 42, outer door 41, and two door supports 43 together form an interior space. The door supports 43 are located outside the viewing window to prevent their structure from being exposed to the user's view, thus avoiding a deterioration in the aesthetics of the appliance door assembly 100 and the cooking equipment. The lower end of the inner door 42 is wrapped with an elastic strip 44 to prevent the appliance door 4 from colliding hard with the appliance body during opening and closing. The specific structure of the appliance door 4 can be designed with reference to existing technology; this is not the focus of this invention, and this embodiment will not limit or elaborate on it.

[0105] The handle bracket 2 includes a horizontally arranged top plate 21 with an upper cold air hole 211. The door handle 1 is slidably mounted on the top plate 21. When the door handle 1 is in the retracted state, the handle cold air inlet 1133 is connected to the door cold air channel 20 through the upper cold air hole 211. Preferably, the front end of the top plate 21 abuts against the inner side of the outer door 41, and the top surface of the top plate 21 is flush with the top surface of the outer door 41. This ensures that when the door handle 1 is mounted on the top plate 21, the lower side of the door handle 1 is close to the top of the outer door 41. As a result, when the door handle 1 is in the retracted state, there is no gap or only a small gap between the door handle 1 and the door 4, which improves aesthetics and facilitates cleaning.

[0106] The two ends of the top plate 21 along the left and right direction are flush with the corresponding outer sides of the two door brackets 43 to improve the overall aesthetics of the door assembly 100. To facilitate the installation of the handle brackets 2, mounting portions 23 are provided on the lower sides of both ends of the top plate 21. The two mounting portions 23 are detachably connected to the two handle brackets 2 respectively. The connection method can be, but is not limited to, screw connection, snap-fit ​​or other connection methods.

[0107] The top plate 21 is higher than the upper end of the inner door 42, and the rear air vent 40 is formed between the top plate 21 and the upper end of the inner door 42. The handle bracket 2 also includes a side plate 22, the upper end of which is vertically connected to the rear side of the top plate 21. The side plate 22 extends downward to the side of the inner door 42 opposite to the outer door 41 and covers the rear air vent 40, so as to conceal the upper end of the inner door 42 and improve the overall aesthetics of the door assembly 100. The side plate 22 is provided with a side ventilation hole 221, and the rear air vent 40 is connected to the steam passage 2101 of the machine body through the side ventilation hole 221. Preferably, multiple side ventilation holes 221 are arranged at intervals in the left-right direction.

[0108] To enhance the cooking experience, in this embodiment, the door assembly 100 further includes a handle drive assembly 6, which drives the door handle 1 to switch between a retracted state and an extended state. This enables automated control of the door handle 1, allowing the control device 500 to automatically control the operation of the door handle 1 based on the steam state in the inner pot 300.

[0109] The handle drive assembly 6 is preferably installed inside the door 4, with one on each side of the door 4, to ensure the force balance at both ends of the door handle 1 and reduce the driving force requirement for a single handle drive assembly 6, thus allowing the handle drive assembly 6 to be miniaturized. The handle drive assembly 6 is preferably located between the air duct partition assembly and the door bracket 43, thereby preventing steam from interfering with the handle drive assembly 6 and improving the operational reliability of the handle drive assembly 6.

[0110] It is worth noting that the handle drive assembly 6 can adopt any structure that enables the door handle 1 to switch between the extended and retracted states. This embodiment does not limit or elaborate on the structure of the handle drive assembly 6.

[0111] like Figures 5 to 9 As shown, in this embodiment, in order to separate the door steam passage 10 and the door cold air passage 20, an air duct separation component 3 is provided between the outer door 41 and the inner door 42. The air duct separation component 3 is located between the two door supports 43 and forms an inner door air duct with the inner and outer doors 41. The door steam passage 10 and the door cold air passage 20 are located in the inner door air duct.

[0112] The air duct partition assembly 3 includes an air duct frame 31 and a partition plate 32. The air duct frame 31 is sandwiched between the inner door 42 and the outer door 41. The partition plate 32 is installed on the inner side of the air duct frame 31 and is spaced apart from both the inner door 42 and the outer door 41. The partition plate 32, the air duct frame 31, and the outer door 41 together form a door cold air duct 20, and the partition plate 32, the air duct frame 31, and the inner door 42 together form a door steam duct 10. That is, by setting the air duct frame 31, the left and right boundaries of the door cold air duct 20 and the door steam duct 10 are defined, and by using the partition plate 32, the internal air duct formed by the air duct frame 31, the inner door 42, and the outer door 41 is separated, thereby improving the convenience of separating the door steam duct 10 and the door cold air duct 20 in the front-to-back direction. The air duct frame 31 also facilitates the installation of the partition plate 32.

[0113] The upper end of the duct frame 31 is closed to the upper end of the cold air passage 20, and the upper end of the duct frame 31 is provided with several upper cold air outlets 3112. The upper end of the duct frame 31 is higher than the upper end of the inner door 42, so that a rear air vent 40 is formed between the upper end of the duct frame 31 and the inner door 42.

[0114] The partition 32 is preferably made of transparent heat insulation, such as glass, which reduces the heat conducted from the door steam passage 10 to the door cold air passage 20, ensuring that the temperature of the cooling gas flowing to the handle cooling passage 113 is not too high, and ensuring the cooling effect of the cooling gas on the door 4, steam, and door handle 1. The partition 32 may also be partially transparent only in the viewing window facing the door 4.

[0115] The duct frame 31 includes an outer frame portion 311, the front side of which abuts against the outer door 41, and the rear side of which abuts against the inner door 42. The outer frame portion 311 preferably has an inverted U-shaped structure, thereby allowing the lower ends of the door steam passage 10 and the door cold air passage 20 to be open. The top of the outer frame portion 311 has the aforementioned upper cold air outlet 3112. Furthermore, a connecting plate portion 313 extends inwardly from the front side of the outer frame portion 311, and the connecting plate portion 313 is attached and bonded to the inner side of the outer door 41. The connecting plate portion 313 is located outside the outer transparent window.

[0116] To improve the ease of installation of the partition plate 32, the inner sidewall of the outer frame 311 extends inward with a positioning rib 314. The periphery of the partition plate 32 fits into the positioning rib 314. Thus, the partition plate 32 is positioned on the air duct frame 31 by setting the positioning rib 314.

[0117] The outer frame portion 311 has rearwardly protruding positioning protrusions 315 on both sides of its rear side, which support the top of the inner door 42. The handle bracket 2 has a downwardly protruding rib portion 24 on its lower side of the top plate portion 21, which abuts against the upper end of the positioning protrusions 315. The rear side of the outer frame portion 311 abuts against the front side of the rib portion 24.

[0118] It is understood that the structure of the above-mentioned air duct separation component 3 is only an exemplary structure, and other structures that can separate the door steam passage 10 and the door cold air passage 20 can be applied to this embodiment.

[0119] Example 2 This example provides a door assembly 100 and a cooking device. The basic structure of the cooking device provided in this example is the same as that in Example 1, with only some differences in settings. This example will not repeat the content that is the same as in Example 1.

[0120] like Figure 10 and Figure 11 As shown, the handle cooling channel 113 extends in the left and right direction, thereby increasing the range of cooling gas dissipation on the door handle 1 and improving the cooling effect of the cooling gas on the door handle 1.

[0121] Furthermore, the door handle 1 is provided with a handle groove 115 running vertically through the door to facilitate the user's grip on the door handle 1. The door handle 1 has mounting arms 112 located on the left and right sides of the handle groove 115 and a gripping arm 111 connected between the two mounting arms 112. The handle cooling channel 113 extends from one mounting arm 112 along the gripping arm 111 to the other mounting arm 112, thereby maximizing the length of the handle cooling channel 113 and avoiding interference between the handle cooling channel 113 and the handle groove 115.

[0122] In this embodiment, the handle groove 115 is provided through the rear side, and the grip arm 111 is provided on the front side of the handle groove 115. In other embodiments, the front and rear sides of the handle groove 115 are closed, and the grip arm 111 is provided on both the front and / or rear sides of the handle groove 115.

[0123] That is, in this embodiment, the handle cooling channel 113 includes a main channel 1131 disposed on the grip arm 111 and side channel sections 1132 respectively disposed on the two mounting arms 112. The main channel 1131 extends in the left-right direction, and the handle cooling air inlet 1133 communicates with the main channel 1131; the side channel sections 1132 extend in the front-back direction, and the rear end of the side channel sections 1132 forms the handle cooling air outlet 1134.

[0124] To facilitate the connection between the handle cooling channel 113 and the body cooling channel 2102, in this embodiment, both mounting arms 112 are provided with handle cooling air outlets 1134, and the gripping arm 111 is provided with handle cooling air inlets 1133. The cooling gas in the door cooling channel 20 enters the handle cooling channel 113 through the handle cooling air inlets 1133, and diffuses along the handle cooling channel 113 to the mounting arms 112 on the left and right sides, and finally flows out of the handle 1 through the two handle cooling air outlets 1134 and enters the body cooling channel 2102.

[0125] Preferably, the handle cold air inlet 1133 is located at the middle of the grip arm 111 along the length direction and multiple inlets are spaced apart along the length direction of the grip arm 111, so as to enhance the smooth flow of cooling air between the handle cooling channel 113 and the door cold air channel 20, ensure the air intake of the body cold air channel 2102, and help ensure the overall structural strength and rigidity of the door handle 1, thereby improving the service life of the cooking equipment.

[0126] Correspondingly, in this embodiment, the upper cooling air hole 211 on the handle bracket 2 is located in the middle of the top plate portion 21 in the left-right direction, and the upper cooling air outlet 3112 on the air duct frame 31 is located in the middle of the left-right direction.

[0127] Example 3

[0128] This embodiment provides a door assembly 100 and a cooking device. The basic structure of the cooking device provided in this embodiment is the same as that in Embodiment 1, with only some differences in settings. This embodiment will not repeat the contents that are the same as those in Embodiment 1.

[0129] like Figure 12 and Figure 13 As shown, in this embodiment, the handle cooling channel 113 is formed by the door handle 1 and the upper part of the door 4, which simplifies the structure of the door handle 1.

[0130] Specifically, the door handle 1 includes a handle panel 12 extending in the left-right direction. When the door handle 1 is in the retracted state, the lower end of the handle panel 12 extends to the top of the door 4, and the upper end of the handle panel 12 is used to cooperate with the control device 500 on the upper side of the door assembly 100 so that a handle cooling channel 113 is formed between the rear side of the handle panel 12, the top of the door 4, and the control device 500.

[0131] That is, when the door handle 1 is in the retracted state, the top and front of the door handle cooling channel 113 are closed. When the door handle 1 is in the extended state, the front end of the space between the control device 500 and the door 4 is open, so that external cooling gas can directly enter the body cooling channel 2102 through the front end of the space at the top of the door 4.

[0132] To separate the door steam passage 10 and the door cold air passage 20, an air duct partition 3 is provided between the outer door 41 and the inner door 42. The air duct partition 3 and the inner door 42 together form the door steam passage 10, and the door cold air passage 20 is located between the inner door 42 and the outer door 41 and is located outside the air duct partition 3. This arrangement allows the upper end of the door cold air passage 20 to be open, facilitating communication between the door cold air passage 20 and the handle cooling passage 113, simplifying the structure of the door assembly 100, and also simplifying the structure of the air duct partition 3.

[0133] The air duct partition assembly 3 includes a partition plate 32 and a top sealing plate 34 connected to the rear top of the partition plate 32. The partition plate 32 is spaced apart from both the inner door 42 and the outer door 41. The rear end of the top sealing plate 34 is spaced above the inner door 42, so that a rear air vent 40 is formed between the rear end of the top sealing plate 34 and the upper end of the inner door 42. The top sealing plate 34, the partition plate 32, and the inner door 42 enclose a door steam passage 10. The rear air vent 40 communicates with the door steam passage 10. By setting the top sealing plate 34, the upper end of the door steam passage 10 can be sealed, blocking the communication between the handle cooling passage 113 and the door steam passage 10. By setting the partition plate 32, the door steam passage 10 and the door cold air passage 20 are separated inside the machine door 4. By setting the rear end of the top sealing plate 34 to be higher than the inner door 42 and forming a rear air vent 40 between them, the ease of forming the rear air vent 40 can be improved.

[0134] Side sealing plates 35 are connected to the left and right sides of the partition plate 32. The upper end of the side sealing plate 35 is connected to the top sealing plate 34, and the rear side of the side sealing plate 35 abuts against the inner door 42. The top sealing plate 34, partition plate 32, inner door 42, and two side sealing plates 35 together form a door steam passage 10. In other embodiments, the partition plate 32 may also extend in the left and right direction to the two door supports 43, and the partition plate 32 is transparently positioned facing the observation window of the machine door 4.

[0135] Furthermore, a protrusion 351 is provided on the rear side of the side sealing plate 35, which is supported on the upper end of the inner door 42 to realize the installation and positioning of the air duct partition assembly 3 relative to the door 4 in the height direction.

[0136] Furthermore, a rear baffle 36 extends downward from the rear end of the top sealing plate 34. The lower end of the rear baffle 36 is located behind and below the inner door 42, so that the rear baffle 36 blocks the rear air vent 40 of the door. The rear baffle 36 has multiple ventilation openings along its length to connect to the rear air vent 40 of the door.

[0137] It is worth noting that the structure of the air duct separation component 3 provided in this embodiment is only an exemplary structure. Existing structures that can separate the door steam passage 10 and the door cold air passage 20 can all be applied to this embodiment.

[0138] Example 4

[0139] This embodiment provides a door assembly 100 and a cooking device, and the function of the handle cooling channel 113 of the cooking device provided in this embodiment is slightly different from that in Embodiment 1.

[0140] Specifically, such as Figures 14 to 18 As shown, in this embodiment, the top of the door 4 is provided with an upper cold air outlet 3112, and the rear side of the top of the door 4 is provided with a rear air vent 40. The door cold air channel 20 can be connected to the handle cooling channel 113 through the upper cold air outlet 3112 to introduce cooling gas into the handle cooling channel 113. The door cold air channel 20 is connected to the body cold air channel 2102 through the rear air vent 40.

[0141] That is, in this embodiment, the cooling gas enters the steam channel 2101 of the machine body through the door cold air channel 20, the rear door air vent 40 and the machine body cold air channel 2102 in sequence. When the cooling gas enters the door cold air channel 20, part of the cooling gas enters the handle cooling channel 113 through the upper cold air outlet 3112 to cool the door handle 1.

[0142] That is, in this embodiment, the rear air vent 40 is the rear cold air outlet of the door cold air channel 20, and the handle cooling channel 113 is not used as the main channel for cold air intake of the cooking equipment, but only as a channel for cooling the door handle 1.

[0143] In this embodiment, the door handle 1 is further provided with a handle steam channel 114, and the door door 4 is provided with a door steam channel 10. The handle steam channel 114 is separated from the handle cooling channel 113, and the door steam channel 10 is separated from the door cold air channel 20. When the door handle 1 is in the retracted state, the door steam channel 10 is connected to the body steam channel 2101 through the handle steam channel 114. Thus, when the door handle 1 is in the retracted state, the steam discharged from the inner liner 300 is discharged through the body steam channel 2101, the handle steam channel 114, and the door steam channel 10. In other embodiments, the door steam channel 10 may not be provided inside the door 4, and the handle steam channel 114 may not be provided on the door handle 1. The steam discharged from the body steam channel 2101 is discharged to the outside of the body without passing through the door assembly 100.

[0144] The handle steam inlet 1141 of the handle steam channel 114 is located on the rear side of the door handle 1, communicating with the steam channel 2101 of the machine body. Preferably, when the door handle 1 is in the extended state, the handle steam outlet 1142 of the handle steam channel 114 is spaced apart on the front side of the door 4. This allows steam in the inner liner 300 to pass sequentially through the steam channel 2101 of the machine body and the handle steam channel 114 to be discharged into the front space of the door assembly 100, without being discharged into the door steam channel 10. This arrangement allows for selection of the steam discharge channel according to the cooking state of the cooking equipment. When the steam contains a lot of grease, it is not necessary to discharge the steam into the door steam channel 10, reducing the grease content inside the door 4, improving the ease of cleaning the door 4, and enhancing the long-term performance of the door 4.

[0145] The steam passage 10 is preferably located outside the viewing window. This prevents condensation from affecting the viewing window and hindering the user's ability to observe the cooking process, thus improving the user experience of the cooking equipment. In this embodiment, steam passages 10 are provided on both the left and right sides of the viewing window, thereby increasing the steam discharge channels inside the door 4, reducing steam discharge resistance, and improving steam discharge efficiency. In other embodiments, the steam passage 10 may be provided only on one side of the viewing window.

[0146] The door handle 1 has a vertically extending handle groove 115. The door handle 1 has two mounting arms 112 located on the left and right sides of the handle groove 115, and a gripping arm 111 connected between the two mounting arms 112. This improves the user's ease of operation and installation of the door handle 1. Furthermore, the door handle 1 includes a handle body 11 and a handle panel 12 located on the front side of the handle body 11. The handle body 11 has a handle cooling channel 113 and a handle groove 115.

[0147] In this embodiment, the front side of the handle groove 115 is closed and the rear side is open to simplify the structure of the door handle 1. In other embodiments, both the front and rear sides of the handle groove 115 can be closed, and the grip arm 111 is located on the front and / or rear side of the handle groove 115.

[0148] To facilitate cooling of the door handle 1, the handle cooling channel 113 extends in the left-right direction, thereby increasing the range of heat dissipation of the cooling gas on the door handle 1 and improving the heat dissipation effect of the cooling gas on the door handle 1. Specifically, the handle cooling channel 113 extends from one mounting arm 112 along the grip arm 111 to another mounting arm 112, thereby maximizing the length of the handle cooling channel 113 and avoiding interference between the handle cooling channel 113 and the handle groove 115.

[0149] In this embodiment, the lower surfaces of both mounting arms 112 are provided with handle cooling air inlets 1133, and the gripping arm 111 is provided with handle cooling air outlets 1134. Both handle cooling air inlets 1133 and handle cooling air outlets 1134 are connected to handle cooling channels 113. This allows cooling gas to enter the door handle 1 through the two handle cooling air inlets 1133, converge from both sides to the middle of the handle cooling channel 113, and be discharged from the handle cooling air outlets 1134.

[0150] In other embodiments, both mounting arms 112 may be provided with handle cooling air outlets 1134, and the gripping arm 111 may be provided with handle cooling air inlets 1133. Both handle cooling air outlets 1134 and handle cooling air inlets 1133 are connected to handle cooling channels 113.

[0151] In this embodiment, the handle cooling channel 113 includes a main channel 1131 disposed on the grip arm 111 and side channel sections 1132 respectively disposed on the two mounting arms 112. The main channel 1131 extends in the left-right direction, the handle cooling air outlet 1134 communicates with the main channel 1131, and the lower end of the side channel section 1132 forms the handle cooling air inlet 1133.

[0152] In this embodiment, the side channel portion 1132 is L-shaped and includes a transverse channel portion extending in the front-to-back direction and a longitudinal channel portion extending in the height direction of the door 4. The front end of the transverse channel portion communicates with the main channel portion 1131, and the rear end of the transverse channel portion communicates with the longitudinal channel portion. The lower end of the longitudinal channel portion forms the handle cooling air inlet 1133. In other embodiments, the handle cooling channel 113 can also be a U-shaped structure with the opening facing downwards, and its side channel portion 1132 extends in the height direction of the door 4.

[0153] In this embodiment, when the door handle 1 is in the extended state, the handle cooling channel 113 is connected to the door cooling channel 20 through the handle cooling air inlet 1133, thereby quickly cooling the door handle 1 when it is extended, thus preventing the user from being burned by touching the hot door handle 1, and improving the safety of using the door assembly 100 and the cooking equipment.

[0154] When the door handle 1 is in the retracted state, the handle cold air inlet 1133 is separated from the door cold air passage 20, that is, the cooling gas will not flow into the handle cooling passage 113 through the handle cold air inlet 1133, so as to better ensure the cold air intake of the body cold air passage 2102.

[0155] In this embodiment, the handle cooling air outlet 1134 extends through the rear side of the grip arm 111. Preferably, when the door handle 1 is in the extended state, the handle cooling air outlet 1134 is spaced apart on the front side of the door 4, so that the gas discharged from the handle cooling channel 113 is directly discharged into the external environment. In other embodiments, the handle cooling air outlet 1134 may be located on the lower side of the door handle 1.

[0156] Preferably, the handle cold air outlet 1134 is located at the middle position along the length direction of the mounting arm 112, and multiple handle cold air outlets 1134 are spaced apart along the length direction of the mounting arm 112 to reduce the size of a single handle cold air outlet 1134 and ensure the structural strength of the door handle 1.

[0157] In this embodiment, the handle steam channel 114 and the door steam channel 10 are arranged in a one-to-one correspondence, that is, both mounting arms 112 are provided with handle steam channels 114, and each handle steam channel 114 is connected to the corresponding door steam channel 10. In this embodiment, the handle cooling channel 113 is located behind the two handle steam channels 114, thereby making the handle cooling channel 113 closer to the area of ​​the door handle 1 with a higher temperature, which is conducive to heat dissipation of the door handle 1.

[0158] Furthermore, the distance between the handle steam channel 114 and the handle cold air inlet 1133 on the same mounting arm 112 in the left-right direction is L1, and the length of the mounting arm 112 in the left-right direction is L0, where L1 ≤ 0.5L0. This makes the handle steam channel 114 close to the handle cold air inlet 1133, thereby improving the heat dissipation effect of the steam in the handle steam channel 114 and improving the heat dissipation effect of the door handle 1.

[0159] It is worth noting that the handle steam outlet 1142 and handle cold air inlet 1133 of the handle steam channel 114 are both located on the lower side of the mounting arm 112. The distance between the handle steam channel 114 and the handle cold air inlet 1133 in the left and right directions specifically refers to the distance between the handle steam outlet 1142 and the handle cold air inlet 1133 in the left and right directions.

[0160] like Figures 17 to 23 As shown, in this embodiment, the top plate 21 of the handle bracket 2 is provided with an upper cooling air hole 211 and a steam communication hole 212. The steam communication hole 212 connects the door steam channel 10 and the handle steam channel 114, and the upper cooling air hole 211 connects the door cooling air channel 20 and the handle cooling channel 113. In this embodiment, the upper cooling air hole 211 is located at the middle position along the length of the top plate 21, and two sets of steam communication holes 212 are provided corresponding to the two handle steam channels 114.

[0161] The door cooling air passage 20 includes a steam heat dissipation passage 201, which is arranged side-by-side with the door steam passage 10 and is thermally connected. Alternatively, the door cooling air passage 20 includes a door heat dissipation passage 202 passing through an observation window. The door heat dissipation passage 202 is used to dissipate heat from the main door 4 to prevent excessive steam temperature rise in the door 4. The steam heat dissipation passage 201 is used to dissipate heat from the steam within the door steam passage 10, thereby reducing the steam temperature, improving steam condensation efficiency, reducing the steam content in the exhaust door steam passage 10, and lowering the steam temperature of the exhaust door steam passage 10. In other embodiments, the door cooling air passage 20 may include only the door heat dissipation passage 202 or only the steam heat dissipation passage 201.

[0162] Specifically, in this embodiment, the door cold air channel 20 includes two steam heat dissipation channels 201, which are arranged side by side with the two door steam channels 10 and are thermally connected. The door heat dissipation channel 202 is located between the two steam heat dissipation channels 201.

[0163] To improve the ease of forming the door cold air passage 20 and the door steam passage 10, an air duct partition assembly 3 is provided inside the door 4. The air duct partition assembly 3 includes an air duct frame 31 and a steam pipe 33. The air duct frame 31 is sandwiched between the inner door 42 and the outer door 41, and the air duct frame 31, the inner door 42, and the outer door 41 together form an internal air duct. The steam pipe 33 is disposed in the internal air duct, and the inner cavity of the steam pipe 33 forms the door steam passage 10. In this embodiment, the steam pipe 33 and the door steam passage 10 are arranged in a one-to-one correspondence.

[0164] The air duct frame 31 includes an inner frame portion 312 and an outer frame portion 311 spaced apart and fitted outside the inner frame portion 312. Both the inner frame portion 312 and the outer frame portion 311 are sandwiched between the inner door and the outer door 41. The air duct inside the door includes two side air ducts forming between the inner frame portion 312 and the outer frame portion 311, with the two side air ducts located on the left and right sides of the inner frame portion 312, respectively. The steam pipe 33 is installed in the side air ducts, and the inner space of the inner frame portion 312 is positioned directly opposite the observation window of the machine door 4. By setting the inner frame portion 312 and the outer frame portion 311, the installation of the steam pipe 33 can be positioned, ensuring that the steam pipe 33 is located outside the observation window.

[0165] The steam pipe 33 is spaced apart from the inner door 42, and the space between the steam pipe 33 and the inner door 42 forms a steam heat dissipation channel 201. The inner space of the inner frame 312 at least partially forms a door heat dissipation channel 202.

[0166] A radiator 5 is installed inside the steam heat dissipation channel 201 to dissipate heat from the steam in the steam pipe 33 and the steam heat dissipation channel 201, so as to quickly remove the heat from the radiator 5 and improve the heat dissipation effect of the radiator 5.

[0167] To improve the ease of installation of the steam pipe 33, the duct frame 31 also includes a connecting plate portion 313. The connecting plate portion 313 is connected between the inner frame portion 312 and the outer frame portion 311, and the connecting plate portion 313 fits snugly against the outer door 41. The steam pipe 33 is installed on the connecting plate portion 313, and the installation method can be integral molding, welding, or detachable connection. In other embodiments, the connecting plate portion 313 may partially share the front wall of the steam pipe 33.

[0168] The outer frame 311 has an inverted U-shaped structure, meaning that the top of the outer frame 311 closes the top of the door steam passage 10 and the top of the door cold air passage 20. In this embodiment, to connect the door steam passage 10 and the handle steam passage 114, an air inlet group is provided at the top of the outer frame 311, with each air inlet group corresponding to a door steam passage 10. Each air inlet group includes several door steam inlets 3111. When the door handle 1 is in the retracted state, steam enters the door steam passage 10 through the door steam inlets 3111. This allows for control of the amount of steam entering the door steam passage 10 and the steam entry speed by adjusting the total opening area and position of the door steam inlets 3111. Preferably, the door steam inlets 3111 correspond one-to-one with the steam communication holes 212 on the handle bracket 2.

[0169] To connect the door cooling air passage 20 and the handle cooling passage 113, an upper cooling air outlet 3112 is provided at the top of the outer frame 311. The upper cooling air hole 211 and the upper cooling air outlet 3112 are connected accordingly. The cooling air in the door cooling air passage 20 enters the handle cooling passage 113 sequentially through the upper cooling air outlet 3112 and the upper cooling air hole 211. Preferably, multiple upper cooling air outlets 3112 are arranged at intervals along the left and right direction. Preferably, each upper cooling air outlet 3112 corresponds to one upper cooling air hole 211.

[0170] The inner frame portion 312 has a U-shaped structure with its opening facing downwards. Side air ducts are formed between the left and right sides of the inner frame portion 312 and the left and right sides of the outer frame portion 311, respectively. A top air duct 203 is formed between the top of the inner frame portion 312 and the top of the outer frame portion 311, and the top air duct 203 communicates with the side air ducts. Several air duct connection ports 3121 are provided at the top of the inner frame portion 312. The door heat dissipation channel 202 communicates with the top air duct 203 through the air duct connection ports 3121. This allows the cooling gas passing through the steam heat dissipation channel 201 and the door heat dissipation channel 202 to converge at the top air duct 203, facilitating communication between the door cold air channel 20 and the body cold air channel 2102. In this embodiment, the top air duct 203 communicates with the upper cold air outlet 3112.

[0171] The air duct connection openings 3121 are preferably provided in multiple intervals along the left and right direction, thereby ensuring the uniformity of the flow of cooling gas from the door heat dissipation channel 202 to the top channel. The air duct connection openings 3121 are elongated slot-shaped structures extending in the left and right direction.

[0172] A partition plate 32 is installed on the inner side of the inner frame 312. The area of ​​the partition plate 32 facing the observation window is transparent. The partition plate 32 is spaced apart from both the outer door 41 and the inner door 42. The internal space of the inner frame 312 is divided into a partition cavity and a door heat dissipation channel 202 by the partition plate 32. The air duct connection port 3121 is connected to the door heat dissipation channel 202.

[0173] In this embodiment, the door heat dissipation channel 202 is located on the side of the partition plate 32 away from the inner door 42, thereby reducing the impact of the high temperature in the inner liner 300 on the temperature of the cooling gas and ensuring the cooling effect of the cooling gas on the door 4.

[0174] The partition 32 is preferably made of a transparent heat-insulating material to avoid obstructing the user's view of the cooking cavity and to reduce heat transfer between the front and rear air ducts. The partition 32 is preferably made of glass, but can also be made of transparent plastic or other materials. In other embodiments, the partition 32 may be transparent only to the area facing the viewing window.

[0175] In this embodiment, the upper end of the outer frame portion 311 is higher than the top end of the inner door 42, and the upper end of the inner frame portion 312 is lower than the upper end of the inner door 42, forming a cold air outlet between the top ends of the outer frame portion 311 and the inner door 42.

[0176] Example 5

[0177] This embodiment provides a door assembly 100 and a cooking device. The cooking device provided in this embodiment has a structure that is basically the same as that in embodiment four, except that the handle cooling channel 113 is different. This embodiment will not repeat the same content as that in embodiment four.

[0178] like Figure 24 and Figure 25 As shown, in this embodiment, the outer frame portion 311 has an inverted U-shaped structure, and the inner frame portion 312 includes two inner frame plates that are opposite to each other and spaced apart. The top of the inner frame plates abuts against the top of the outer frame portion 311.

[0179] In this embodiment, the door heat dissipation channel 202 is located between the partition plate 32 and the inner door 42. The top air duct 203 is not provided on the air duct frame 31. The upper end of the steam heat dissipation channel 201 and the upper end of the door steam channel 10 are respectively connected to the cold air outlet. The upper cold air outlet 3112 is directly connected to the door heat dissipation channel 202.

[0180] Example 6

[0181] This embodiment provides a door assembly 100 and a cooking device. The cooking device provided in this embodiment has a structure that is basically the same as that in embodiment four, except that the handle cooling channel 113 is different. This embodiment will not repeat the same content as that in embodiment four.

[0182] like Figures 26 to 29 As shown, in this embodiment, when the door handle 1 is in the retracted state, the handle cooling channel 113 is connected to the door cold air channel 20.

[0183] In this embodiment, when the door handle 1 is in the retracted state, cooling gas can be supplied to the handle cooling channel 113 through the door cooling air channel 20, thereby preventing the door handle 1 from heating up due to the small contact area with the outside air in the retracted state. This helps to ensure that the door handle 1 does not need to be extended for heat dissipation during normal cooking of the cooking equipment, thus improving the user experience of the cooking equipment.

[0184] The machine door 4 has a door exhaust channel 30 separated from the door cold air channel 20. When the door handle 1 is in the retracted state, the handle cold air outlet 1134 of the handle cooling channel 113 is connected to the door exhaust channel 30. This arrangement facilitates the exhaust of cooling gas in the door handle 1 while ensuring that the door handle 1 is in the retracted state, avoiding the problem of chaotic exhaust and intake at the door handle 1.

[0185] Preferably, the door exhaust channel 30 and the door cold air channel 20 are separated in the front-to-back direction to avoid the problem of chaotic airflow inside the door 4. Furthermore, the door exhaust channel 30 and the door cold air channel 20 are separated by a heat insulation structure to reduce the conduction of heat from the door exhaust channel 30 to the door cold air channel 20.

[0186] In this embodiment, the air duct partition component 3 can adopt the structure in Embodiment 5, but the difference is that the door exhaust channel 30 and the door heat dissipation channel 202 are separated by a partition plate 32, and the door exhaust channel 30 is located in front of the door heat dissipation channel 202. This facilitates the separation of the door exhaust channel 30 from the door steam channel 10 and the door heat dissipation channel 202, ensuring the orderly flow of air inside the door 4. The upper end of the air duct frame 31 is provided with a cold air exhaust hole 3113, and the top plate 21 of the handle bracket 2 is correspondingly provided with a cold air connecting hole. The cooling gas of the handle cooling channel 113 is discharged into the door exhaust channel 30 through the cold air connecting hole and the cold air exhaust hole 3113 in sequence.

[0187] Example 7

[0188] This embodiment provides a door assembly and a cooking device. The door assembly and cooking device provided in this embodiment are further improvements based on the above embodiments. This embodiment will not repeat the same content as the above embodiments.

[0189] In this embodiment, the door is equipped with a door fan, which is used to guide cooling gas into the door cold air channel. This increases the negative pressure inside the door cold air channel, thereby increasing the flow rate and pressure of the cooling gas entering the door cold air channel, and ensuring that the cooling gas inside the door cold air channel can smoothly enter the handle cooling channel under the action of negative pressure.

[0190] In this embodiment, the door fan is installed at the air inlet of the door cold air duct, which maximizes the negative pressure at the door cold air duct and increases the air volume. Simultaneously, since both the air inlet of the door cold air duct and the steam outlet of the door steam duct are located at the lower end of the door, the increased negative pressure at the air inlet of the door cold air duct also increases the overall negative pressure at the lower end of the door, thus facilitating the discharge of steam from the door steam duct and further improving the smoothness of steam discharge. Furthermore, since the air inlet of the door cold air duct is located at the lower end of the door, the distance between the door fan and the main unit fan can be maximized, ensuring greater consistency of negative pressure throughout the air inlet and outlet sections, and better facilitating the relay between the main unit fan and the door fan. Moreover, installing the door fan at the lower end of the door also facilitates its installation and maintenance.

[0191] The door ventilation fan setup provided in this embodiment can be applied to any of the embodiments from Embodiment 1 to Embodiment 4.

[0192] Example 8

[0193] This embodiment provides a door assembly 100 and a cooking device. The cooking device provided in this embodiment is a further improvement on the cooking device of Embodiment 5. The same structure as in Embodiment 5 will not be described again in this embodiment.

[0194] like Figure 30 and Figure 31 As shown, in this embodiment, a radiator 5 is provided in the door cooling air passage 20 to quickly remove heat from the steam and the inside of the door 4, thereby improving the heat dissipation effect. Specifically, the radiator 5 is installed on one side wall of the steam pipe 33 and located in the steam heat dissipation passage 201.

[0195] To simplify the installation of the door fan 7, the radiator 5 includes multiple heat dissipation fins 51 arranged side-by-side and spaced apart. A vertically penetrating airflow channel 54 is formed between adjacent heat dissipation fins 51. The two outermost heat dissipation fins 51 each extend outwards with extension plates 52, and the door fan 7 is installed between the two extension plates 52. This arrangement allows for the installation of the door fan 7 using the structure of the radiator 5, eliminating the need for additional structures inside the door 4 for installing the door fan 7, thus simplifying the door assembly 100 structure and reducing costs. Simultaneously, this arrangement better ensures the relative positional accuracy between the door fan 7 and the radiator 5, and facilitates the assembly of the radiator 5 and door fan 7 before installation inside the door 4, improving the disassembly and assembly efficiency and precision of the door assembly 100.

[0196] Furthermore, a mounting plate 53 connects the two extension plates 52. The door fan 7 is detachably mounted on the mounting plate 53. The mounting plate 53 has a through-hole 531, which corresponds one-to-one with the door fan 7. By setting the mounting plate 53, the installation convenience of the door fan 7 can be further improved. At the same time, it is convenient to realize the installation positioning of the door fan 7 relative to the radiator 5 in the height direction of the door 4, thereby improving the installation accuracy of the door fan 7. Meanwhile, by mounting the door fan 7 on the mounting plate 53, the width of the door fan 7 in the left and right direction does not need to be equal to the distance between the two extension plates 52, thereby improving the flexibility of door fan 7 selection and better ensuring the installation reliability of the door fan 7.

[0197] Preferably, in this embodiment, each radiator 5 is provided with at least two door fans 7, which are arranged side by side in the left-right direction. This reduces the size of a single door fan 7 while increasing the maximum air intake of the door cold air passage 20. In other embodiments, each radiator 5 may be provided with one door fan 7.

[0198] In this embodiment, the door fan 7 is installed on the lower side of the mounting plate 53 to reduce interference between the door fan 7 and the heat dissipation fins 51 during installation and disassembly, thereby improving the ease of installation and disassembly of the door fan 7. The mounting plate 53 is spaced apart from the other heat dissipation fins 51 to buffer the cooling gas from the door fan 7 to the airflow channel 54. In other embodiments, the door fan 7 may also be installed on the upper side of the mounting plate 53.

[0199] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the appended claims. Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A door assembly, characterized in that, Includes a door (4) and a door handle (1), the door (4) having a door cold air duct (20), the door handle (1) being installed on the top of the door (4) and having an extended state that extends forward relative to the door (4) and a retracted state that retracts relative to the extended state; A handle cooling channel (113) is provided at the door handle (1), and the handle cooling channel (113) can be connected to the door cold air channel (20) to introduce cooling gas into the handle cooling channel (113); The handle cooling channel (113) is located inside the door handle (1). The door handle (1) is provided with a handle steam channel (114). The door (4) is provided with a door steam channel (10). The handle steam channel (114) is separated from the handle cooling channel (113). The door steam channel (10) is separated from the door cold air channel (20). When the door handle (1) is in the retracted state, the handle steam channel (114) is connected to the door steam channel (10) to allow steam discharged from the inner liner (300) to be introduced into the door steam channel (10).

2. The door assembly according to claim 1, characterized in that, The handle cooling channel (113) extends in the left-right direction.

3. The door assembly according to claim 1, characterized in that, The door handle (1) is provided with a handle groove (115) that runs vertically through the door. The door handle (1) has two mounting arms (112) located on the left and right sides of the handle groove (115) and a gripping arm (111) connected between the two mounting arms (112). The handle cooling channel (113) extends from one of the mounting arms (112) along the gripping arm (111) to the other mounting arm (112).

4. The door assembly according to claim 3, characterized in that, The front and rear sides of the handle groove (115) are closed, and the grip arm (111) is located on the rear and / or front side of the handle groove (115).

5. The door assembly according to claim 3, characterized in that, The lower surfaces of the two mounting arms (112) are provided with handle cooling air inlets (1133), and the gripping arm (111) is provided with handle cooling air outlets (1134). The handle cooling air inlets (1133) and the handle cooling air outlets (1134) are both connected to the handle cooling channel (113). Alternatively, both mounting arms (112) are provided with handle cooling air outlets (1134), and the gripping arm (111) is provided with handle cooling air inlets (1133). Both the handle cooling air outlets (1134) and the handle cooling air inlets (1133) are connected to the handle cooling channel (113).

6. The door assembly according to claim 1, characterized in that, The door handle (1) has a handle groove (115) that runs vertically through the door. The door handle (1) includes two mounting arms (112) located on the left and right sides of the handle groove (115), respectively. Each of the two mounting arms (112) is provided with a handle steam channel (114). The handle cooling channel (113) has two handle cold air inlets (1133), which are respectively located on the lower side of the two mounting arms (112).

7. The door assembly according to claim 6, characterized in that, The distance between the handle steam outlet (1142) and the handle cold air inlet (1133) of the handle steam channel (114) on the same mounting arm (112) in the left and right direction is L1, and the length of the mounting arm (112) in the left and right direction is L0, where L1≤0.5L0.

8. The door assembly according to claim 1, characterized in that, A door fan (7) is provided at the door (4), and the door fan (7) is used to guide the cooling gas into the door cold air channel (20).

9. The door assembly according to claim 8, characterized in that, The door fan (7) is installed at the air inlet end of the door cold air duct (20).

10. The door assembly according to any one of claims 1-9, characterized in that, The top rear side of the door (4) is provided with a rear cold air outlet, and the top of the door (4) is provided with an upper cold air outlet (3112). The rear cold air outlet is used to connect the door cold air channel (20) and the body cold air channel (2102). The upper cold air outlet (3112) can be connected to the handle cooling channel (113) to introduce the cooling gas into the handle cooling channel (113).

11. The door assembly according to claim 10, characterized in that, When the door handle (1) is in the extended state, the handle cooling channel (113) is connected to the door cooling channel (20) through the upper cold air outlet (3112).

12. The door assembly according to claim 11, characterized in that, When the door handle (1) is in the retracted state, the handle cooling channel (113) and the door cold air channel (20) are separated.

13. The door assembly according to claim 11, characterized in that, The handle cooling channel (113) has a handle cold air outlet (1134). When the door handle (1) is in the extended state, the handle cold air outlet (1134) is spaced apart on the front side of the door (4).

14. The door assembly according to claim 13, characterized in that, The cold air outlet (1134) of the handle is located on the lower side of the door handle (1).

15. The door assembly according to claim 10, characterized in that, When the door handle (1) is in the retracted state, the handle cooling channel (113) is connected to the door cooling channel (20) through the upper cold air outlet (3112).

16. The door assembly according to claim 15, characterized in that, The handle cooling channel (113) has a handle cold air outlet (1134) that runs through the lower side of the door handle (1). The machine door (4) has a door exhaust channel (30) that is separated from the door cold air channel (20). When the door handle (1) is in the retracted state, the handle cold air outlet (1134) is connected to the door exhaust channel (30).

17. The door assembly according to claim 16, characterized in that, The door exhaust channel (30) and the door cold air channel (20) are separated in the front-to-back direction; And / or, the door exhaust channel (30) and the door cold air channel (20) are separated by a heat-insulating structure.

18. The door assembly according to any one of claims 1-9, characterized in that, The upper rear side of the door cold air channel (20) is closed. The handle cooling channel (113) has a handle cold air inlet (1133) and a handle cold air outlet (1134). The handle cold air inlet (1133) passes through the lower side of the door handle (1), and the handle cold air outlet (1134) passes through the rear side of the door handle (1). The handle cold air inlet (1133) is connected to the door cold air channel (20).

19. A cooking appliance comprising a body having an inner pot (300) having a steam vent, characterized in that, Includes the door assembly as described in any one of claims 1-18.

20. The cooking apparatus according to claim 19, characterized in that, A steam exhaust device (200) is provided between the inner liner (300) and the casing (400) of the body. The steam exhaust device (200) has a body steam passage (2101) and a body cold air passage (2102). The air outlet of the door cold air passage (20) is connected to the body cold air passage (2102).

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