Self-adjusting door assembly and steam-baking micro integrated machine

Abstract

The application relates to a self-adjusting door assembly and a steam-baking-microwave integrated machine, which can meet the sealing and heat dissipation requirements of the three functions of steam, baking and microwave, and is favorable for improving the safe use performance of the steam-baking-microwave integrated machine. The self-adjusting door assembly comprises a metal door body used for abutting against the inner container front plate of a box assembly, an inner plate body movably arranged at the rear side of the metal door body and used for abutting against the sealing ring of the box assembly, and a self-adaptive adjusting mechanism arranged between the metal door body and the inner plate body and used for adaptively increasing the gap between the metal door body and the inner plate body with the increase of the inner container temperature of the box assembly.

Description

Technical Field

[0001] This application relates to the field of cooking technology, and in particular to a self-adjusting door assembly and a steam oven / grill combo. Background Technology

[0002] With the improvement of people's living standards, steam ovens and microwave ovens have become an indispensable household appliance in the kitchen. They integrate three functions: steam heating (steam function), hot air baking (baking function), and microwave heating (microwave function), and are very popular among users.

[0003] Existing steam ovens primarily use sealing rings to seal steam and hot air in their door assembly, typically requiring three to four layers of glass insulation. Because these sealing rings age during the steaming and baking process, existing steam ovens are prone to leaks or softening of the sealing rings after prolonged use, affecting their normal operation. Furthermore, due to variations in the structure and installation of the sealing rings, the door can be easily forced open during assembly. This results in existing steam ovens not only having a noticeably tilted door assembly from the side, affecting the overall appearance, but also posing a risk of microwave leakage due to the door being forced open.

[0004] Furthermore, since the three functions of steaming, baking, and microwaving are integrated into the same machine, the door assembly needs to be designed with heat insulation based on the highest temperature. As a result, the door assembly of the existing steaming, baking, and microwaving combo ovens will experience a high temperature rise during the cooking process, which seriously affects the user experience. Summary of the Invention

[0005] Therefore, it is necessary to address the problems of poor sealing, microwave leakage, or high door temperature rise in existing steam ovens. This application provides a self-adjusting door assembly and a steam oven that can meet the sealing and heat dissipation requirements of the three functions of steaming, baking, and microwaving, which is beneficial to improving the safe use performance of the steam oven.

[0006] According to one aspect of this application, one embodiment provides a self-adjusting door assembly, comprising: a metal door body for abutting against the front panel of the inner liner of a box assembly; an inner panel body movably disposed on the rear side of the metal door body for abutting against the sealing ring of the box assembly; and an adaptive adjustment mechanism disposed between the metal door body and the inner panel body for adaptively increasing the gap between the metal door body and the inner panel body as the temperature of the inner liner of the box assembly increases.

[0007] With this configuration, since the internal temperature of the steam oven gradually increases before cooking, after the microwave function is activated, after the steam function is activated, and after the oven function is activated, the self-adjusting door assembly of this application can adaptively adjust the gap between the metal door and the inner plate according to the rise and fall of the internal temperature. This allows the inner plate and the sealing ring to be in a clearance fit at low temperatures and in a contact fit at high temperatures, so as to meet the sealing and heat dissipation requirements of the three functions of steaming, baking, and microwaving, and thus improve the safe operation of the steam oven.

[0008] In one embodiment of this application, when the self-adjusting door assembly is in the initial state and / or microwave sealing state, the gap between the metal door body and the inner plate body is reduced, so that the metal door body abuts against the inner liner front plate, and the inner plate body and the sealing ring are in a clearance fit state.

[0009] With this configuration, when the steam oven starts cooking or the microwave function is activated, the inner cavity temperature of the oven assembly is low, and the gap between the metal door and the inner panel is small. This allows the metal door to abut against the front panel of the inner cavity, while the inner panel does not abut against the sealing ring. This creates a clearance fit between the inner panel and the sealing ring, preventing any forward pushing force on the metal door. This ensures that the metal door will not be pushed open and can remain in a vertical position, improving the overall appearance of the appliance. It also ensures that the metal door is firmly pressed against the front panel of the inner cavity, preventing microwave leakage and ensuring user safety.

[0010] In one embodiment of this application, when the self-adjusting door assembly is in a steam-sealed state and / or a hot-air-sealed state, the gap between the metal door body and the inner plate increases, so that the inner plate body abuts against the sealing ring, and the metal door body and the inner liner front plate are in a clearance fit state.

[0011] With this configuration, when the steam oven and / or oven functions are activated, the inner liner of the appliance is at a higher temperature. The gap between the metal door and the inner panel is larger, resulting in a greater resistance force exerted by the inner panel on the sealing ring. This ensures a more secure contact between the inner panel and the sealing ring, preventing steam and / or hot air leakage. Simultaneously, as the resistance force exerted by the inner panel on the sealing ring continues to increase, the metal door is pushed further forward, gradually widening the gap between the metal door and the front panel of the inner liner. This increased gap, combined with the improved heat dissipation of the self-adjusting door assembly, helps to reduce the temperature of the metal door, preventing damage to the electronic components installed in the self-adjusting door assembly and preventing burns to the user.

[0012] In one embodiment of this application, the adaptive adjustment mechanism includes a heat storage structure fixed to the metal door and a push rod fixedly connected to the inner panel. The push rod is disposed on the heat storage structure and is used to drive the push rod to move the inner panel back and forth by means of the thermal expansion and contraction of the heat storage structure.

[0013] With this configuration, as the temperature of the inner liner of the box assembly rises, the temperature of the heat storage structure also rises to expand due to heat. At this time, the push rod, under the action of the heat storage structure, pushes the inner plate backward to increase the gap between the inner plate and the metal door. Conversely, when the temperature of the inner liner of the box assembly decreases, the temperature of the heat storage structure also decreases to pre-cool and contract. At this time, the push rod, under the action of the heat storage structure, pulls the inner plate forward to decrease the gap between the inner plate and the metal door.

[0014] In one embodiment of this application, the heat storage structure includes a heat storage cavity fixed to the metal door and a piston plate fixedly connected to the push rod; the piston plate is slidably disposed within the heat storage cavity to divide the internal space of the heat storage cavity into a sealed cavity located on the front side of the piston plate and used for heat storage expansion and an open cavity located on the rear side of the piston plate.

[0015] With this configuration, when the temperature of the inner liner of the box assembly rises, the temperature inside the sealed cavity of the heat storage structure also rises, and the pressure inside the sealed cavity increases accordingly, pushing the piston plate to slide backward and increasing the volume of the sealed cavity. At this time, the push rod, pushed by the piston plate, will slide the inner plate backward to adaptively increase the gap between the metal door and the inner plate.

[0016] In one embodiment of this application, the push rod extends through the open cavity in a front-to-back direction, wherein the front end of the push rod extends into the sealed cavity, and the rear end of the push rod slidably extends out of the heat storage cavity to be fixedly connected to the inner plate.

[0017] With this configuration, the push rod of this application can directly conduct heat from the inner plate to the sealing cavity, so that the temperature inside the sealing cavity can be basically the same as the temperature of the inner liner of the box assembly, which is beneficial to improving the sensitivity of the adaptive adjustment mechanism.

[0018] In one embodiment of this application, the adaptive adjustment mechanism further includes a reset member disposed between the heat storage structure and the push rod, for applying a forward reset force to the push rod.

[0019] With this configuration, when the inner liner temperature of the box assembly is low, the push rod can move the inner plate forward under the action of the reset member, so that the metal door and the inner plate are kept at a small distance, ensuring that a stable gap is formed between the inner plate and the sealing ring.

[0020] In one embodiment of this application, the reset element is a spring disposed within the open cavity and fitted onto the push rod; the two ends of the spring abut against the piston plate and the heat storage cavity, respectively.

[0021] With this configuration, the adaptive adjustment mechanism of this application can apply a forward elastic force to the piston plate through the spring, thereby indirectly applying a forward restoring force to the push rod, which helps to reduce assembly difficulty.

[0022] In one embodiment of this application, the self-adjusting door assembly further includes an outer plate and a middle plate spaced apart from the outer plate; the outer plate is fixed to the front side of the metal door, and the middle plate is fixed to the metal door and located between the outer plate and the inner plate.

[0023] With this configuration, the self-adjusting door assembly of this application can form a sealed and heat-insulating space between the outer plate and the middle plate, which helps to reduce the temperature of the front surface of the self-adjusting door assembly, so as to protect the electronic components on the door assembly and improve the user experience.

[0024] In one embodiment of this application, the self-adjusting door assembly further includes a choke plate disposed between the middle plate and the inner plate and capable of deforming back and forth.

[0025] With this configuration, the self-adjusting door assembly of this application can improve the microwave sealing reliability of the self-adjusting door assembly while allowing the inner plate to move back and forth relative to the middle plate.

[0026] In one embodiment of this application, the metal door is arranged around the inner panel and protrudes rearward from the inner panel to form a step difference between the metal door and the inner panel.

[0027] With this configuration, when the self-adjusting door assembly closes the front opening of the box assembly, the metal door body will first contact the inner front panel of the box assembly, while the inner panel will not contact the sealing ring of the box assembly, thus ensuring that a small gap is formed between the inner panel and the sealing ring.

[0028] According to another aspect of this application, one embodiment of this application further provides a steam oven / grill / microwave oven, comprising: a cabinet assembly having an inner liner front panel with a front opening and a sealing ring mounted on the inner liner front panel and arranged around the front opening; and a self-adjusting door assembly as described in any of the preceding claims, mounted on the cabinet assembly for opening or closing the front opening of the cabinet assembly. Attached Figure Description

[0029] Figure 1 This is a perspective view of a steam oven / grill combo appliance according to an embodiment of this application; Figure 2 An exploded view of the steam oven and microwave combo appliance according to the above embodiments of this application is shown; Figure 3 A cross-sectional schematic diagram of a steam oven / grill combo appliance according to the above embodiments of this application is shown; Figure 4 It shows Figure 3 A magnified schematic diagram of part A of the steam oven / grill combination appliance shown; Figure 5 A partial schematic diagram of the steam oven and microwave combination appliance according to the above embodiments of this application before cooking begins is shown; Figure 6 A partial schematic diagram of the microwave oven in the steam oven and microwave combination appliance according to the above embodiments of this application after the microwave function is activated is shown; Figure 7 A partial schematic diagram of the steam oven and microwave combo appliance according to the above embodiments of this application after the steaming function is activated is shown; Figure 8 A partial schematic diagram of the steam oven and microwave oven according to the above embodiments of this application after the oven function is activated is shown.

[0030] Explanation of key component symbols: 1. Self-adjusting door assembly; 10. Metal door body; 20. Inner panel; 30. Adaptive adjustment mechanism; 31. Heat storage structure; 3101. Sealed cavity; 3102. Open cavity; 311. Heat storage cavity; 312. Piston plate; 32. Push rod; 33. Reset component; 330. Spring; 40. Outer panel; 50. Middle panel; 60. Choke plate; 2. Box assembly; 3. Inner liner front panel; 4. Sealing ring.

[0031] The above description of the main component symbols, together with the accompanying drawings and specific embodiments, provides a further detailed explanation of this application. Detailed Implementation

[0032] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0033] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and 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, and therefore should not be construed as a limitation of this application.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0035] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., 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, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0036] Considering that existing steam oven / microwave combos either suffer from microwave leakage and aesthetic issues due to the sealing ring opening the door, or experience sealing problems or softening of the sealing ring after prolonged use due to aging, and furthermore, the door assembly in existing steam oven / microwave combos requires heat insulation design based on the highest temperature, which can easily lead to high temperature rise during cooking, seriously affecting the user experience, this application provides a self-adjusting door assembly and a steam oven / microwave combo that can simultaneously meet the sealing and heat dissipation requirements of the three functions (steaming, baking, and microwave), thus improving the safe operation of the steam oven / microwave combo.

[0037] Specifically, see the attached document. Figures 1 to 8 As shown, one embodiment of this application provides a steam oven / grill / microwave combination appliance, which may include a cabinet assembly 2 and a self-adjusting door assembly 1. The self-adjusting door assembly 1 is installed on the cabinet assembly 2 for opening or closing the front opening of the cabinet assembly 2. The cabinet assembly 2 has an inner liner front panel 3 providing the front opening and a sealing ring 4 installed on the inner liner front panel 3 and arranged around the opening. It is understood that the cabinet assembly of the steam oven / grill / microwave combination appliance of this application may include, but is not limited to, an inner liner assembly, a steam generator providing steaming function, a hot air fan providing baking function, and a microwave generator providing microwave function, etc., and may also include various control systems, as long as they can realize the required steam oven / microwave cooking functions, which will not be elaborated further in this application.

[0038] More specifically, such as Figure 3 and Figure 4 As shown, the self-adjusting door assembly 1 may include a metal door body 10 for abutting against the inner liner front panel 3, an inner panel 20, and an adaptive adjustment mechanism 30. The inner panel 20 is movably disposed on the rear side of the metal door body 10 for abutting against the sealing ring 4. The adaptive adjustment mechanism 30 is disposed between the metal door body 10 and the inner panel 20 for adaptively increasing the gap between the metal door body 10 and the inner panel 20 as the temperature of the inner liner of the box assembly 2 increases. It is understood that the front-rear direction mentioned in this application corresponds to the opening direction of the box assembly 2, such as... Figure 2 The left and right directions shown mean that the side of the box assembly 2 on which the self-adjusting door assembly 1 is installed is defined as the front side, and the side of the box assembly 2 opposite to the self-adjusting door assembly 1 is defined as the rear side.

[0039] It is worth noting that, such as Figures 5 to 8As shown, the temperature of the inner cavity of the steam oven increases sequentially before cooking, after the microwave function is activated, after the steam function is activated, and after the oven function is activated. Therefore, the self-adjusting door assembly of this application can adaptively adjust the gap between the metal door and the inner plate according to the rise and fall of the inner cavity temperature. This allows the inner plate 20 and the sealing ring 4 to be in a clearance fit at low temperatures and in a contact fit at high temperatures, so as to meet the sealing and heat dissipation requirements of the three functions of steaming, baking, and microwaving, and thus improve the safe operation of the steam oven.

[0040] For example, such as Figure 5 As shown, before the steam oven starts cooking, the temperature of the inner cavity of the oven assembly 2 is basically equal to the ambient temperature (such as room temperature), so that the self-adjusting door assembly 1 is in its initial state. At this time, the gap between the metal door 10 and the inner plate 20 is small. The metal door 10 abuts against the front plate 3 of the inner cavity, and the inner plate 20 does not abut against the sealing ring 4, so that the inner plate 20 and the sealing ring 4 are in a clearance fit state, and no forward pushing force is applied to the metal door 10, ensuring that the metal door 10 will not be pushed open and can remain in a vertical state, improving the overall appearance of the machine.

[0041] like Figure 6 As shown, after the microwave function of the steam oven is activated, although the temperature of the inner cavity of the oven assembly 2 increases, it remains low (e.g., below 100°C). This results in the gap between the metal door 10 and the inner plate 20 only slightly increasing under the action of the adaptive adjustment mechanism 30, so that the self-adjusting door assembly 1 is in a microwave-sealed state. At this time, the inner plate 20 is still in a clearance fit with the sealing ring 4, allowing the metal door 10 to press tightly against the front plate 3 of the inner cavity, preventing microwave leakage and ensuring user safety.

[0042] like Figure 7 As shown, after the steam function of the steam oven is activated, the temperature of the inner cavity of the oven assembly 2 begins to rise significantly (e.g., to a high temperature between 100℃ and 180℃). This causes the gap between the metal door 10 and the inner panel 20 to increase significantly under the action of the adaptive adjustment mechanism 30, so that the self-adjusting door assembly 1 is in a steam-sealed state. At this time, the inner panel 20 will abut against the sealing ring 4, improving the door's sealing performance and preventing steam leakage. In addition, the compressed sealing ring 4 will push the metal door 10 forward, creating a gap between the metal door 10 and the inner cavity front panel 3. That is, the metal door 10 and the inner cavity front panel 3 are in a gap-fit ​​state, ensuring internal air circulation of the self-adjusting door assembly 1, enhancing heat dissipation of the door, helping to reduce the temperature of the metal door 10, and improving the user experience.

[0043] like Figure 8 As shown, after the oven function is activated in this steam oven, the temperature of the inner cavity of the oven assembly 2 will further increase (e.g., to an ultra-high temperature greater than 180°C). This causes the gap between the metal door 10 and the inner panel 20 to further increase under the action of the adaptive adjustment mechanism 30, so that the self-adjusting door assembly 1 is in a hot air sealing state. At this time, the abutment force exerted by the inner panel 20 on the sealing ring 4 will further increase, which not only further improves the sealing performance and prevents hot air leakage, but also pushes the metal door 10 further forward, making the gap between the metal door 10 and the inner cavity front panel 3 larger. This ensures smoother airflow inside the self-adjusting door assembly 1, further enhances heat dissipation of the door, prevents the metal door 10 from overheating, and improves the user experience.

[0044] It is worth noting that because the adaptive adjustment mechanism 30 can adaptively increase the gap between the metal door 10 and the inner plate 20 as the temperature of the inner cavity of the oven assembly 2 rises, when the steam oven and / or oven functions are activated (i.e., when the self-adjusting door assembly is in a steam-sealed and / or hot-air-sealed state), the gap between the metal door 10 and the inner plate 20 will continue to increase as the temperature of the inner cavity continues to rise. This causes the abutment force exerted by the inner plate 20 on the sealing ring 4 to increase continuously, ensuring a more secure contact between the inner plate 20 and the sealing ring 4, preventing steam and... / or hot air leaks outward; at the same time, as the resistance force applied by the inner plate 20 to the sealing ring 4 continues to increase, the metal door 10 will be pushed forward further, so that the gap between the metal door 10 and the inner liner front plate 3 gradually increases, that is, the metal door 10 and the inner liner front plate 3 are in a gap fit state, which in turn, with the gradually increasing gap between the metal door 10 and the inner plate 20, ensures that the self-adjusting door assembly 1 has a better heat dissipation effect, which is conducive to better reducing the temperature of the metal door 10, avoiding damage to the electronic components installed in the self-adjusting door assembly 1, and also preventing burns to users.

[0045] For example, such as Figure 3 and Figure 4As shown, the adaptive adjustment mechanism 30 may include a heat storage structure 31 fixed to the metal door 10 and a push rod 32 fixedly connected to the inner panel 20. The push rod 32 is disposed on the heat storage structure 31 and is used to drive the push rod 32 to move the inner panel 20 back and forth through the thermal expansion and contraction of the heat storage structure 31. Thus, as the temperature of the inner liner of the box assembly 2 increases, the temperature of the heat storage structure 31 also increases to expand due to heat. At this time, the push rod 32 pushes the inner panel 20 backward under the action of the heat storage structure 31 to increase the gap between the inner panel 20 and the metal door 10. When the temperature of the inner liner of the box assembly 2 decreases, the temperature of the heat storage structure 31 also decreases to pre-cool and contract. At this time, the push rod 32 pulls the inner panel 20 forward under the action of the heat storage structure 31 to decrease the gap between the inner panel 20 and the metal door 10.

[0046] Optionally, such as Figure 3 and Figure 4 As shown, the heat storage structure 31 includes a heat storage cavity 311 fixed to the metal door 10 and a piston plate 312 fixedly connected to the push rod 32. The piston plate 312 is slidably disposed within the heat storage cavity 311 to divide the internal space of the heat storage cavity 311 into a sealed cavity 3101 located in front of the piston plate 312 for heat storage expansion and an open cavity 3102 located behind the piston plate 312. Thus, when the temperature of the inner liner of the box assembly 2 rises, the temperature in the sealed cavity 3101 of the heat storage structure 31 also rises, and the pressure in the sealed cavity 3101 increases accordingly, pushing the piston plate 312 to slide backward and increase the volume of the sealed cavity 3101. At this time, the push rod 32, pushed by the piston plate 312, will slide the inner plate 20 backward to adaptively increase the gap between the metal door 10 and the inner plate 20. It is understood that the sealed cavity 3101 of the heat storage structure 31 can be filled with air or other gases, or it can be filled with materials with a high coefficient of thermal expansion, such as polymer materials or nanocrystalline superlattices. This application will not elaborate further on this.

[0047] Preferably, such as Figure 3 and Figure 4 As shown, the push rod 32 extends through the open cavity 3102 along the front-to-back direction, with its front end extending into the sealed cavity 3101 and its rear end slidably extending out of the heat storage cavity 311 to be fixedly connected to the inner plate 20. In this way, the push rod 32 of this application can directly conduct heat from the inner plate 20 to the sealed cavity 3101, ensuring that the temperature inside the sealed cavity 3101 is essentially equal to the temperature of the inner liner of the box assembly 2, which is beneficial for improving the sensitivity of the adaptive adjustment mechanism 30. It is understood that the push rod 32 mentioned in this application may be made of, but is not limited to, thermally conductive materials such as copper, iron, or alloys, and this application will not elaborate further on this.

[0048] It is worth noting that when the temperature of the inner liner of the box assembly 2 decreases, the temperature inside the sealing cavity 3101 of the heat storage structure 31 also decreases, and the pressure inside the sealing cavity 3101 decreases accordingly, so as to pull the piston plate 312 to slide forward and reduce the volume of the sealing cavity 3101; at this time, the push rod 32 will slide forward with the inner plate 20 under the pull of the piston plate 312, so as to adaptively reduce the gap between the metal door 10 and the inner plate 20.

[0049] Furthermore, to ensure that the inner plate 20 does not contact the sealing ring 4 when the inner liner temperature of the box assembly 2 is low (e.g., when not cooking or performing microwave functions), a stable gap is formed between the inner plate 20 and the sealing ring 4, such as... Figure 3 and Figure 4 As shown, the adaptive adjustment mechanism 30 of this application may further include a reset member 33 disposed between the heat storage structure 31 and the push rod 32, for applying a forward reset force to the push rod 32. Thus, when the inner liner temperature of the box assembly 2 is low, the push rod 32 can move the inner plate 20 forward under the action of the reset member 33, maintaining a small distance between the metal door 10 and the inner plate 20, ensuring a stable gap is formed between the inner plate 20 and the sealing ring 4.

[0050] Optionally, such as Figure 3 and Figure 4 As shown, the reset member 33 is implemented as a spring 330 disposed within the open cavity 3102 and fitted onto the push rod 32. The two ends of the spring 330 abut against the piston plate 312 and the heat storage cavity 311 respectively, so that the spring 330 applies a forward elastic force to the piston plate 312, thereby indirectly applying a forward reset force to the push rod 32, which helps to reduce the assembly difficulty.

[0051] It is worth noting that in other examples of this application, the two ends of the spring 330 can also be respectively limited and connected to the push rod 32 and the heat storage cavity 311 to directly apply a forward elastic force to the push rod 32; or the spring 330 can also be disposed within the sealing cavity 3101 to be implemented as a tension spring, which can still apply a forward restoring force to the push rod 32.

[0052] In addition, in other embodiments of this application, the reset member 33 may also be implemented as other elastomers, or may also be implemented as a magnetic member, so as to achieve the desired reset effect by using magnetic attraction or magnetic repulsion, which will not be described in detail here.

[0053] According to the above embodiments of this application, as Figure 2 and Figure 3As shown, the self-adjusting door assembly 1 typically also includes an outer plate 40 and a middle plate 50 spaced apart from the outer plate 40; the outer plate 40 is fixed to the front side of the metal door 10, and the middle plate 50 is fixed to the metal door 10 and located between the outer plate 40 and the inner plate 20, so as to form a sealed and heat-insulating space between the outer plate 40 and the middle plate 50, which helps to reduce the front surface temperature of the self-adjusting door assembly 1, so as to protect the electronic components on the door assembly and improve the user experience.

[0054] Optionally, such as Figure 3 and Figures 5 to 8 As shown, the self-adjusting door assembly 1 also includes a choke plate 60 disposed between the middle plate 50 and the inner plate 20 and capable of front-to-back deformation, so as to improve the microwave sealing reliability of the self-adjusting door assembly 1 while allowing the inner plate 20 to move back and forth relative to the middle plate 50.

[0055] Optionally, such as Figures 5 to 8 As shown, the metal door 10 surrounds the inner panel 20 and protrudes rearward from the inner panel 20 to create a step difference between the metal door 10 and the inner panel 20. Thus, when the self-adjusting door assembly 1 closes the front opening of the box assembly 2, the metal door 10 will first contact the front inner panel 3 of the box assembly 2, while the inner panel 20 will not contact the sealing ring 4 of the box assembly 2, ensuring a small gap is formed between the inner panel 20 and the sealing ring 4.

[0056] It is worth noting that the heat storage chamber 311 of the adaptive adjustment mechanism 30 can be fixed to the rear side of the outer plate 40 by adhesive, or it can be fixed to the middle plate 50, as long as it can ensure that the adaptive adjustment mechanism 30 can move the inner plate 20 back and forth according to the rise and fall of the inner pot temperature. This application will not elaborate further. It is understood that the inner plate 20, outer plate 40 and middle plate 50 mentioned in this application can all be implemented as glass plates so that users can observe the cooking status of the food in the inner pot; the metal door 10 mentioned in this application can be implemented as an iron door, which can be connected to the inner pot front plate 3 of the box assembly 2 by hinges. This application will not elaborate further.

[0057] Furthermore, the steam oven / grill combo of this application can be controlled by a voice module, which is equipped with a controller, a voice receiving module, and a voice parsing module. The voice receiving module receives user commands, and the voice parsing module parses the commands. Based on the parsed commands, the controller controls the steam oven / grill combo to perform corresponding operations, thereby realizing intelligent control of the steam oven / grill combo and improving the user experience.

[0058] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0059] The above embodiments are merely illustrative of several implementation methods of this application, and their descriptions are quite specific and detailed. However, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these modifications and improvements all fall within the protection scope of this application.

Claims

1. A self-adjusting door assembly, characterized in that, include: Metal door (10) for abutting the inner front panel (3) of the box assembly (2); The inner panel (20) is movably disposed on the rear side of the metal door (10) to abut against the sealing ring (4) of the box assembly (2); and An adaptive adjustment mechanism (30) is provided between the metal door (10) and the inner panel (20) to adaptively increase the gap between the metal door (10) and the inner panel (20) as the temperature of the inner liner of the box assembly (2) increases.

2. The self-adjusting door assembly according to claim 1, characterized in that, When the self-adjusting door assembly (1) is in the initial state and / or microwave sealing state, the gap between the metal door body (10) and the inner plate body (20) is reduced, so that the metal door body (10) abuts against the inner liner front plate (3), and the inner plate body (20) and the sealing ring (4) are in a clearance fit state. When the self-adjusting door assembly (1) is in a steam-sealed state and / or a hot-air-sealed state, the gap between the metal door body (10) and the inner plate (20) increases, so that the inner plate (20) abuts against the sealing ring (4), and the metal door body (10) and the inner liner front plate (3) are in a clearance fit state.

3. The self-adjusting door assembly according to claim 1, characterized in that, The adaptive adjustment mechanism (30) includes a heat storage structure (31) fixed to the metal door (10) and a push rod (32) fixedly connected to the inner plate (20). The push rod (32) is disposed on the heat storage structure (31) and is used to drive the push rod (32) to move the inner plate (20) back and forth by means of the thermal expansion and contraction of the heat storage structure (31).

4. The self-adjusting door assembly according to claim 3, characterized in that, The heat storage structure (31) includes a heat storage cavity (311) fixed to the metal door (10) and a piston plate (312) fixedly connected to the push rod (32); the piston plate (312) is slidably disposed in the heat storage cavity (311) to divide the internal space of the heat storage cavity (311) into a sealed cavity (3101) located on the front side of the piston plate (312) and used for heat storage expansion and an open cavity (3102) located on the rear side of the piston plate (312).

5. The self-adjusting door assembly according to claim 4, characterized in that, The push rod (32) extends through the open cavity (3102) in the front-back direction, wherein the front end of the push rod (32) extends into the sealed cavity (3101), and the rear end of the push rod (32) extends slidably out of the heat storage cavity (311) to be fixedly connected to the inner plate (20).

6. The self-adjusting door assembly according to claim 4, characterized in that, The adaptive adjustment mechanism (30) further includes a reset member (33) disposed between the heat storage structure (31) and the push rod (32) for applying a forward reset force to the push rod (32).

7. The self-adjusting door assembly according to claim 6, characterized in that, The reset component (33) is a spring (330) disposed within the open cavity (3102) and fitted onto the push rod (32); the two ends of the spring (330) abut against the piston plate (312) and the heat storage cavity (311), respectively.

8. The self-adjusting door assembly according to any one of claims 1 to 7, characterized in that, The self-adjusting door assembly (1) further includes an outer panel (40) and a middle panel (50) spaced apart from the outer panel (40); the outer panel (40) is fixed to the front side of the metal door (10), and the middle panel (50) is fixed to the metal door (10) and located between the outer panel (40) and the inner panel (20); The self-adjusting door assembly (1) further includes a choke (60) disposed between the middle plate (50) and the inner plate (20) and capable of deforming back and forth.

9. The self-adjusting door assembly according to claim 8, characterized in that, The metal door (10) is arranged around the inner plate (20) and protrudes rearward from the inner plate (20) to form a step difference between the metal door (10) and the inner plate (20).

10. A steam oven / grill combo, characterized in that: include: The box assembly (2) is provided with an inner liner front panel (3) that provides a front opening and a sealing ring (4) installed on the inner liner front panel (3) and arranged around the front opening. and The self-adjusting door assembly (1) as described in any one of claims 1 to 9 is mounted on the box assembly (2) for opening or closing the front opening of the box assembly (2).

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