Oven

Abstract

The application provides an oven, belonging to the field of cooking electric appliances. The oven comprises a box body, a radiation heating element, a reflection element and a thermal actuating element. The box body has a cooking cavity, and the radiation heating element is arranged in the cooking cavity. The reflection element is arranged on the side of the radiation heating element away from the cooking cavity, and is used for reflecting the heat radiated by the radiation heating element to the cooking cavity. The thermal actuating element is connected with the reflection element, and the thermal expansion material of the thermal actuating element expands after being heated by the radiation heating element, drives the reflection element to move along a first direction, so as to change the heat dispersion degree of the heat reflected by the reflection element to the cooking cavity. The driving force of the thermal actuating element at least partially comes from the heat generated when the radiation heating element works, which can reduce the power consumption for driving the reflection element, has the energy-saving effect, and the heat dispersion degree can be dynamically adjusted according to different cooking requirements after the reflection element moves.

Description

Technical Field

[0001] This application belongs to the field of cooking appliance technology, and more specifically, relates to an oven. Background Technology

[0002] Ovens typically heat food using radiant heating elements installed within the cooking cavity. These elements are mounted at fixed positions and angles, resulting in a relatively fixed heat distribution within the cavity. However, different sized foods have varying heat distribution requirements within the cooking cavity, and the fixed radiant heating method cannot meet the diverse heat distribution needs of different foods. Summary of the Invention

[0003] The purpose of this application is to provide an oven that solves the technical problem that existing ovens cannot meet the diverse heat distribution requirements of different foods.

[0004] To achieve the above objectives, the technical solution adopted in this application is: to provide an oven, the oven comprising: The cabinet has a cooking cavity; Radiant heating element; the radiant heating element is installed inside the cooking cavity; Reflector; The reflector is located on the side of the radiant heating element away from the cooking cavity, and is used to reflect the heat radiated by the radiant heating element into the cooking cavity; Thermo-actuated element; the thermo-actuated element is connected to the reflector, and the thermo-actuated element includes a thermally expanding material. The thermally expanding material expands after being heated by the radiant heating element, driving the reflector to move along a first direction to change the degree of heat dispersion reflected by the reflector to the cooking cavity. The distance the reflector moves along the first direction increases as the temperature of the thermal actuator rises, and the degree of heat dispersion reflected by the reflector into the cooking cavity increases as the moving distance increases.

[0005] Optionally, when the reflector is in its initial position, the reflector reflects the heat radiated by the radiant heating element to the central region of the cooking cavity; when the reflector moves along the first direction, the heat reflected by the reflector to the cooking cavity diffuses from the central region to the edge region of the cooking cavity.

[0006] Optionally, the thermal actuator includes a housing, a thermally expanding material, and a pushing member. The housing has a receiving cavity extending in a first direction. The housing is connected to the housing body, and the thermally expanding material is disposed within the receiving cavity. One end of the pusher extends into the cavity and contacts the thermally expanding material, while the other end of the pusher is connected to the reflector. After the thermally expanding material expands due to heat, it pushes the pusher to move along the first direction, thereby driving the reflector to move along the first direction.

[0007] Optionally, the pusher includes a first elastic element configured to be compressed after the thermally expanding material is heated and to drive the reflector to move along a first direction by its own elastic force.

[0008] Optionally, the oven also includes a reset member, one end of which is connected to the reflector and the other end of which is connected to the oven body; When the temperature of the thermal actuator decreases, the reset member drives the reflector to move and reset in a direction opposite to the first direction.

[0009] Optionally, the reset element includes a second elastic element, which is connected between the housing and the reflector; When the temperature of the thermal actuator decreases, the second elastic element drives the reflector to move and reset in the opposite direction to the first direction through its own elastic force.

[0010] Optionally, the radiant heating element is disposed at the top of the cooking cavity, and the reflector is disposed between the top wall of the cooking cavity and the radiant heating element. The reflector is suspended from the housing by a second elastic element.

[0011] Optionally, the oven includes multiple radiant heating elements, and each radiant heating element has at least one thermal actuator in its corresponding area, so that each thermal actuator drives the reflector to change its position and / or angle according to the heating state of the corresponding radiant heating element, thereby changing the heat distribution reflected by the reflector to the cooking cavity.

[0012] Optionally, the plurality of radiant heating elements includes a first radiant heating element and a second radiant heating element. The first radiant heating element and the second radiant heating element are spaced apart on opposite sides of the cooking cavity along the width direction of the cooking cavity. The first radiant heating element is correspondingly provided with a first thermal actuator, and the second radiant heating element is correspondingly provided with a second thermal actuator. The first thermal actuator and the second thermal actuator are respectively connected to the reflector so that when the heating states of the first radiant heating element and the second radiant heating element are different, the first thermal actuator and the second thermal actuator drive the reflector to move differently, so that the reflector tilts.

[0013] The beneficial effects of the oven provided in this application are as follows: Compared with the prior art, the oven in this application embodiment sets a reflector on the side of the radiant heating element away from the cooking cavity, and connects a thermal actuator to the reflector. After being heated, the thermal actuator drives the reflector to move along a first direction, thereby changing the degree of heat dispersion reflected by the reflector to the cooking cavity. During the cooking process, while the radiant heating element heats the food, the heat it emits is absorbed by the thermal actuator, which converts the thermal energy into mechanical energy to drive the reflector to move. Since the driving force of the thermal actuator comes at least partially from the heat generated when the radiant heating element is working, it does not need to rely entirely on electric drive, thus reducing the electricity consumed to drive the reflector and achieving energy-saving effect. After the reflector moves, its position relative to the radiant heating element changes, and the degree of heat dispersion reflected to the cooking cavity changes accordingly, thereby dynamically adjusting the heat distribution according to different cooking needs. The structure is simple and the operation is reliable. In addition, the oven provided in this application embodiment can also automatically drive the reflector to move by absorbing the heat of the radiant heating element with the thermal actuator according to the amount of food, thereby passively adjusting the coverage and dispersion of heat and achieving adaptive uniform heating. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the oven in an embodiment of this application; Figure 2 This is a schematic diagram of the interior of the oven in an embodiment of this application; Figure 3 This is a schematic diagram of the top of the box in an embodiment of this application; Figure 4 for Figure 3 A diagram showing the view from the bottom. Figure 5 for Figure 3 A diagram from a top-down perspective; Figure 6 This is a schematic diagram showing that the heat reflected by the reflector in the embodiments of this application is in a concentrated state; Figure 7 This is a schematic diagram showing that the heat reflected by the reflector in the embodiments of this application is in a dispersed state; Figure 8 This is a cross-sectional schematic diagram of the thermal actuator in an embodiment of this application; Figure 9 This is an exploded view of the thermal actuator in an embodiment of this application; Figure 10 This is a cross-sectional schematic diagram of the reset component in an embodiment of this application; Figure 11 This is a schematic diagram showing the distribution of the first and second radiant heating elements in an embodiment of this application.

[0016] Reference numerals: Box body 1; Cooking cavity 11; Radiant heating element 2; First Radiant Heating Element 21; Second Radiant Heating Element 22; Reflector 3; Thermal Actuator 4; Shell 41; Receiving cavity 411; Thermal expansion material 42; Pushing element 43; First Elastic Element 431; First Thermal Actuator 44; Second Thermal Actuator 45; Reset element 5; Second Elastic Element 51; Connecting cap 52; Connecting ear 53; First direction a. Detailed Implementation

[0017] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0018] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0019] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this application.

[0020] 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 one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0021] Ovens, as a common cooking appliance, typically heat food using radiant heating elements located within the cooking cavity. These elements generate heat and radiate it directly onto the food surface inside the cavity. To further improve heat utilization efficiency, some ovens have reflectors on the side of the radiant heating element facing away from the cooking cavity. These reflectors deflect the heat radiated away from the cavity back into the cooking cavity, reducing heat loss and improving energy efficiency.

[0022] However, in related technologies, the radiant heating element and reflector are typically fixed structures. The radiant heating element is installed at a fixed position and angle, and the reflector is also set at a fixed angle and position. When combined, the heat distribution radiated and reflected into the cooking cavity is relatively fixed. In actual use, the distribution of food of different sizes within the cooking cavity varies. For example, when a user cooks only a small amount of food, such as baking a small piece of meat, the food occupies only a small area in the center of the cooking cavity; while when a user cooks a larger amount of food, such as baking a full plate of cookies or a large amount of vegetables simultaneously, the food is distributed throughout a larger area of ​​the cooking cavity.

[0023] Because the angles and positions of the radiant heating elements and reflectors are fixed, the heat coverage area reflected into the cooking cavity remains constant. In scenarios with less food and a smaller area, a significant portion of the reflected heat still shines on the empty areas outside the food, failing to effectively reach the food surface, resulting in heat waste and low energy efficiency. Conversely, in scenarios with more food and a larger area, the fixed reflection angle may lead to insufficient heat coverage at the edges of the cooking cavity. Some food at the edges may not receive sufficient heat radiation, resulting in uneven heating with higher temperatures in the center and lower temperatures at the edges, affecting the overall cooking effect.

[0024] To address the above problems, this application provides an oven; please refer to [link / reference]. Figures 1 to 5 In some embodiments of this application, the oven includes: Box 1; Box 1 has a cooking cavity 11; Radiant heating element 2; Radiant heating element 2 is disposed inside the cooking cavity 11; Reflector 3; The reflector 3 is disposed on the side of the radiant heating element 2 away from the cooking cavity 11, and is used to reflect the heat radiated by the radiant heating element 2 to the cooking cavity 11. Thermoactor 4; Thermoactor 4 is connected to reflector 3. Thermoactor 4 includes thermal expansion material 42. The thermal expansion material 42 expands after being heated by radiant heating element 2, driving reflector 3 to move along the first direction a, so as to change the degree of heat dispersion reflected by reflector 3 to cooking cavity 11.

[0025] like Figure 1 and Figure 2As shown, in this embodiment, the oven body 1 is the main structure of the oven, and a cooking cavity 11 is formed inside the oven body 1. The cooking cavity 11 is a space for containing and cooking food. The oven body 1 generally includes an outer shell, an inner liner, and a sandwich layer disposed between the outer shell and the inner liner. The cooking cavity 11 is enclosed by the inner liner. The top, bottom, and side walls of the cooking cavity 11 form a relatively enclosed heating space, and food is placed on a baking tray or rack inside the cooking cavity 11 for heating and cooking.

[0026] Radiant heating element 2 is disposed within the cooking cavity 11 to generate heat and heat the food within the cooking cavity 11 through thermal radiation. Radiant heating element 2 can be a heating element capable of transferring heat through radiation, such as an electric heating tube, halogen tube, carbon fiber tube, or quartz tube. Its specific type and power can be selected according to the oven specifications and cooking needs. Radiant heating element 2 is installed in the top, bottom, or side wall areas of the cooking cavity 11 to provide radiant heat to the food from different directions.

[0027] When the radiant heating element 2 is working, its outer surface temperature rises and it radiates electromagnetic waves, primarily infrared radiation. The side of the radiant heating element 2 facing the cooking cavity 11 (facing downwards) directly transfers the radiated heat to the surface of the food inside the cooking cavity 11, heating the food. The side of the radiant heating element 2 facing away from the cooking cavity 11 (facing upwards) radiates heat towards the top wall of the cooking cavity 11. Since this heat is not directly directed at the food, if it is not utilized, it will be absorbed by the top wall of the housing 1 or lost through the insulation layer, resulting in energy waste.

[0028] The reflector 3 is positioned on the side of the radiant heating element 2 facing away from the cooking cavity 11, meaning the radiant heating element 2 is located between the reflector 3 and the cooking cavity 11. In other words, the reflector 3 is located above the radiant heating element 2, between the radiant heating element 2 and the top wall of the cooking cavity 11. The reflector 3 reflects the upward-radiated heat from the radiant heating element 2 back into the cooking cavity 11, allowing this heat, which would otherwise be lost, to be transferred downwards and applied to the food surface, thereby improving the heat utilization efficiency of the radiant heating element 2 and reducing energy loss. The reflector 3 can be a metal reflector plate, such as a stainless steel plate, an aluminum plate, or a polished metal plate. It can also be a plate coated with a high-reflectivity coating, or a structural component with a reflective film, as long as its side facing the radiant heating element 2 has good heat radiation reflection capability. The shape of the reflector 3 can be flat or a curved panel with a certain curvature; the specific shape can be designed according to the coverage requirements for reflecting heat.

[0029] The thermal actuator 4 is connected to the reflector 3, and is configured to drive the reflector 3 to move along the first direction a after being heated. The thermal actuator 4 is a component that can convert thermal energy into mechanical motion. Its operation relies on the physical changes in the internal medium after absorbing heat to output displacement or driving force. The thermal actuator 4 can be disposed between the reflector 3 and the housing 1, with one end connected to the reflector 3 and the other end connected to the housing 1. Alternatively, the thermal actuator 4 can be disposed between the reflector 3 and the radiant heating element 2, with one end connected to the reflector 3 and the other end connected to the radiant heating element 2 or its mounting bracket. The specific installation position and connection method of the thermal actuator 4 can be selected according to the internal space layout of the oven.

[0030] The core working medium of the thermal actuator 4 can be a thermally expanding material 42, such as paraffin wax, liquids or gases with a high coefficient of thermal expansion, or shape memory alloys. Taking paraffin wax as an example, during the phase transition from solid to liquid, the volume of paraffin wax expands significantly. When the thermal actuator 4 absorbs the heat emitted by the radiant heating element 2, the temperature of the paraffin wax rises and it gradually melts. The pressure generated by the volume expansion pushes the moving parts inside the thermal actuator 4 to produce displacement. This displacement is transmitted to the reflector 3 through the transmission structure, driving the reflector 3 to move along the first direction a. The first direction a can be towards the radiant heating element 2, that is, the reflector 3 moves downward and closer to the radiant heating element 2; it can also be away from the radiant heating element 2, that is, the reflector 3 moves upward and away from the radiant heating element 2; or it can be a translation along the depth or width direction of the cooking cavity 11. The specific direction of the first direction a depends on the connection method between the thermal actuator 4 and the reflector 3 and the setting of the motion conversion mechanism, as long as the position of the reflector 3 relative to the radiant heating element 2 changes after it moves along the first direction a.

[0031] In this embodiment, after the reflector 3 moves along the first direction a under the drive of the thermal actuator 4, its position relative to the radiant heating element 2 changes. The change in the distance between the reflector 3 and the radiant heating element 2 will cause the reflection and converging effect of the reflector 3 to change accordingly. The reflection of radiant heat by the reflector 3 can be compared with the optical principle of a concave mirror: the radiant heat emitted by the radiant heating element 2 is reflected by the reflector 3 and forms a heat-covered area in the cooking cavity 11. The size and position of this area depend on the relative position between the reflector 3 and the radiant heating element 2, as well as the curvature and angle of the reflector 3. When the reflector 3 is in a certain position, the reflected heat is relatively concentrated in the cooking cavity 11, the heat-covered area is small, the heat density per unit area is high, and the heat distribution is more focused. At this time, the heat is concentrated in a local area of ​​the cooking cavity 11, which is suitable for concentrated heating of food placed in a small area. As the heat absorbed by the thermoactor 4 increases, the internal medium expands further, driving the reflector 3 to continue moving along the first direction a. The relative position between the reflector 3 and the radiant heating element 2 gradually changes, reducing the convergence of reflected heat, gradually expanding the heat coverage area, decreasing the heat density per unit area, and shifting the heat distribution from a focused state to a defocused state. The degree of heat dispersion increases, resulting in a wider heat coverage area, suitable for uniformly heating food placed in large areas. Conversely, when the temperature inside the cooking cavity 11 decreases and the temperature of the thermoactor 4 decreases accordingly, the volume of the internal medium of the thermoactor 4 contracts. Under the action of the resetting force, the reflector 3 moves and resets in the opposite direction to the first direction a, causing the reflected heat to converge again and reducing the degree of heat dispersion.

[0032] With the above structure, the reflector 3 in this embodiment can automatically move along the first direction a according to the degree of heating of the thermal actuator 4, changing the position of the reflector 3 relative to the radiant heating element 2, thereby dynamically adjusting the degree of heat dispersion reflected to the cooking cavity 11 between the focused state and the defocused state. When there is little food in the cooking cavity 11 and it is concentrated in a certain area, the heat radiated to the thermal actuator 4 by the radiant heating element 2 is relatively small, the temperature rise of the thermal actuator 4 is small, the moving distance of the reflector 3 is small or it remains in the initial position, and the heat is concentrated and reflected to the area where the food is located, reducing the loss of heat to the blank area and the heating efficiency is high. When there is a large amount of food in the cooking cavity 11 and it is widely distributed, the food occupies a significant area of ​​the cooking cavity 11. The heat radiated by the radiant heating element 2 is absorbed and blocked by the food, resulting in a slower overall temperature rise within the cooking cavity 11. However, the operating temperature of the radiant heating element 2 itself continuously increases due to continuous power supply. The thermal actuator 4 absorbs the residual heat from the radiant heating element 2, and its temperature gradually rises, driving the reflector 3 to move a greater distance. Consequently, the heat reflection range expands, covering a wider area of ​​food, allowing food distributed in different locations to receive relatively uniform heat radiation. The entire movement and adjustment process of the reflector 3 requires no additional electronic control devices, sensors, or manual operation by the user. The thermal actuator 4 directly utilizes the residual heat emitted by the radiant heating element 2 during operation as its power source, achieving automatic, continuous, and dynamic adjustment of the degree of heat dispersion. The structure is simple, does not increase additional energy consumption, and has a good energy-saving effect.

[0033] The movement of the thermal actuator 4 can be controlled passively or actively. In passive control, the thermal actuator 4 does not have an independent heating element; it relies entirely on absorbing the residual heat emitted by the radiant heater 2 during operation to raise its temperature. The temperature change of the thermal actuator 4 naturally follows the operating state of the radiant heater 2. When the radiant heater 2 is just starting to operate or is in a low-power state, the temperature of the thermal actuator 4 is low, and the reflector 3 remains in its initial position. As the radiant heater 2 continues to operate and the temperature inside the cooking cavity 11 gradually rises, the heat absorbed by the thermal actuator 4 accumulates, and its temperature rises accordingly, driving the reflector 3 to move along the first direction a. The advantage of this passive control method is its simple structure, requiring no additional control circuitry or heating element, and relying entirely on the natural transfer and accumulation of heat to achieve adaptive adjustment, resulting in high reliability and low manufacturing cost.

[0034] In active control mode, an auxiliary heating element, such as a small electric heating element, heating wire, or PTC heating element, can be additionally installed on the thermal actuator 4. The auxiliary heating element is electrically connected to the oven's control system. When the control system determines that the position of the reflector 3 needs to be adjusted according to the cooking program or the cooking mode set by the user, the control system powers on the auxiliary heating element, which actively heats the thermal actuator 4. Under the combined action of the auxiliary heating element and the residual heat of the radiant heating element 2, the thermal actuator 4 rapidly heats up, driving the reflector 3 to move along the first direction a to the target position.

[0035] Furthermore, the active control method can be combined with the passive control method. In most conventional cooking scenarios, the thermoactor 4 passively adapts to the residual heat of the radiant heating element 2, without consuming additional electrical energy. In special cooking modes requiring rapid adjustment or precise control, the control system activates the auxiliary heating element for active intervention, achieving a rapid response. The combination of the two methods balances energy efficiency and controllability, better meeting diverse cooking needs.

[0036] In some embodiments of this application, the moving distance of the reflector 3 along the first direction a increases with the increase of the temperature of the thermal actuator 4, and the degree of dispersion of the heat reflected by the reflector 3 to the cooking cavity 11 increases with the increase of the moving distance.

[0037] In this embodiment, the distance the reflector 3 moves along the first direction a increases as the temperature of the thermal actuator 4 rises. The temperature change of the thermal actuator 4 originates from the heat emitted by the radiant heating element 2 during operation. The operating state of the radiant heating element 2 is directly related to the amount and distribution of food in the cooking cavity 11. When there is a large amount of food in the cooking cavity 11 and it occupies a large area, the radiant heating element 2 needs to operate continuously for a longer time to heat the food to the required temperature, and the baking time is correspondingly extended. During the longer baking process, the radiant heating element 2 continues to generate heat, its own temperature continuously increases, and the heat emitted to the surroundings also increases. The thermal actuator 4 continuously absorbs the heat emitted by the radiant heating element 2, the temperature of its internal thermal expansion material 42 gradually increases, its volume continuously expands, and the distance the reflector 3 moves along the first direction a also increases accordingly.

[0038] As the moving distance of the reflector 3 increases, the relative position between the reflector 3 and the radiant heating element 2 changes more significantly. The converging effect of the reflector 3 on the radiant heat gradually weakens, and the coverage area of ​​the reflected heat expands accordingly. The heat gradually shifts from a relatively concentrated focused state to a more widely dispersed state, and the degree of heat dispersion reflected into the cooking cavity 11 increases accordingly. In other words, the more food there is, the larger the area it occupies, the longer the required baking time, the longer the continuous working time of the radiant heating element 2, the higher the temperature of the thermal actuator 4, and the greater the moving distance of the reflector 3, the greater the degree of dispersion and coverage of the reflected heat.

[0039] This process establishes an adaptive matching relationship. When there is less food and the area occupied is smaller, the baking time is shorter, the temperature rise of the thermoactor 4 is limited, the movement distance of the reflector 3 is smaller, the heat remains relatively concentrated, reducing heat loss to blank areas and resulting in higher heating efficiency. When there is more food and the area occupied is larger, the baking time is longer, the temperature of the thermoactor 4 continues to rise, the movement distance of the reflector 3 increases, the heat coverage area expands, and food distributed in different locations can receive more uniform heat radiation. The entire adjustment process does not require sensors to detect the food distribution, nor does it require the control system to actively calculate and adjust the position of the reflector 3. The thermoactor 4 is passively driven entirely by absorbing the residual heat of the radiant heating element 2, automatically adjusting the reflected heat to a dispersion level that matches the food distribution range, achieving simple structure and no additional energy consumption for adaptive adjustment.

[0040] like Figure 6 and Figure 7 As shown, in some embodiments of this application, when the reflector 3 is in its initial position, the reflector 3 reflects the heat radiated by the radiant heating element 2 to the central region of the cooking cavity 11; when the reflector 3 moves along the first direction a, the heat reflected by the reflector 3 to the cooking cavity 11 diffuses from the central region to the edge region of the cooking cavity 11.

[0041] like Figure 6 As shown, with the reflector 3 in its initial position, the thermal actuator 4 is not yet heated or is only slightly heated, and the reflector 3 is in its initial position. At this time, the relative position between the reflector 3 and the radiant heating element 2 results in a strong reflection and converging effect of the reflector 3. The heat radiated by the radiant heating element 2 away from the cooking cavity 11 is reflected by the reflector 3 and concentrated in the central area of ​​the cooking cavity 11. The central area is a relatively central location within the cooking cavity 11, typically the main area where the user places food. Especially when the amount of food is small and occupies only a small area in the center of the cooking cavity 11, the concentrated reflection of heat to the central area allows the heat to act more effectively on the food surface, improving heating efficiency and reducing heat loss to areas without food.

[0042] As the reflector 3 moves along the first direction a, the thermal actuator 4 absorbs more heat, its temperature rises, and it drives the reflector 3 to gradually move away from its initial position. Figure 7 As shown, with the increase of the moving distance, the relative position between the reflector 3 and the radiant heating element 2 changes, the reflection and converging effect of the reflector 3 gradually weakens, and the heat coverage area reflected into the cooking cavity 11 expands accordingly. The reflected heat gradually diffuses from the originally concentrated central area to the edge area of ​​the cooking cavity 11, and the heat distribution changes from a focused state to a defocused state. At this time, the heat is no longer concentrated only in the center, but covers a wider area within the cooking cavity 11.

[0043] This diffusion process is adapted to the changes in the distribution range of food within the cooking cavity 11. When there is a large quantity of food and it occupies a large area, the food is not only distributed in the central area but also extends to the edge area of ​​the cooking cavity 11. In this case, the radiant heating element 2 needs to work continuously for a longer time to heat more food, the baking time is extended, the time for the thermal actuator 4 to absorb heat also increases, the temperature continues to rise, driving the reflector 3 to move a greater distance, and the heat coverage area expands accordingly, diffusing from the center to the edge, so that the food in the edge area can also receive sufficient heat radiation. Conversely, when there is a small quantity of food and it is concentrated in the center, the baking time is shorter, the temperature rise of the thermal actuator 4 is limited, the reflector 3 remains in the initial position or moves a small distance, and the heat is still concentrated and reflected to the central area.

[0044] As the reflector 3 changes from its initial position to its moving position, the reflected heat diffuses from the central area to the edge area, and the coverage area increases with the increase of the moving distance of the reflector 3. The entire process is passively driven by the thermoactuator 4 according to the actual baking time and degree of heating, without the need for sensors to detect food distribution or for active intervention from the control system, thus automatically achieving adaptive matching between heat distribution and food distribution range.

[0045] Please see Figure 8 and Figure 9 In some embodiments of this application, the thermal actuator 4 includes a housing 41, a thermal expansion material 42, and a pusher 43. The housing 41 has a receiving cavity 411 extending along a first direction a. The housing 41 is connected to the housing 1. The thermal expansion material 42 is disposed in the receiving cavity 411. One end of the pusher 43 extends into the receiving cavity 411 and contacts the thermal expansion material 42. The other end of the pusher 43 is connected to the reflector 3. After the thermal expansion material 42 expands due to heat, it pushes the pusher 43 to move along the first direction a, thereby driving the reflector 3 to move along the first direction a.

[0046] In this embodiment, the housing 41 is connected to the box 1, serving as the fixing base for the thermal actuator 4. The housing 41 has a receiving cavity 411 extending along a first direction a. The receiving cavity 411 is a hollow structure arranged along the first direction a, and its extension direction is consistent with the moving direction of the reflector 3. One end of the receiving cavity 411 is closed or isolated from the outside of the housing 41, while the other end has an opening for the pusher 43 to extend into. A thermally expanding material 42 is disposed within the receiving cavity 411, filling part or all of the space. The thermally expanding material 42 is a temperature-sensitive medium that expands in volume when heated, such as paraffin wax, a liquid with a high coefficient of thermal expansion, or a shape memory alloy. In some embodiments, the thermally expanding material 42 can be paraffin wax, which undergoes significant volume expansion during the phase transition from solid to liquid, providing a large driving force and displacement.

[0047] One end of the pushing member 43 extends into the receiving cavity 411 and contacts the thermally expanding material 42, while the other end of the pushing member 43 is connected to the reflector 3. The pushing member 43 is movably disposed along a first direction a. Its end within the receiving cavity 411 is adjacent to the thermally expanding material 42. When the thermally expanding material 42 expands due to heat within the receiving cavity 411, the resulting pressure directly acts on the end face of the pushing member 43, pushing it outward along the extending direction of the receiving cavity 411, i.e., the first direction a. The other end of the pushing member 43 is connected to the reflector 3. When the pushing member 43 moves along the first direction a, it causes the reflector 3 to move synchronously along the first direction a, thereby changing the position of the reflector 3.

[0048] After being heated and expanding, the thermally expanding material 42 pushes the pushing member 43 to move along the first direction a, thereby driving the reflector 3 to move along the first direction a. Throughout the operation, the heat emitted by the radiant heating member 2 is transferred to the housing 41 of the thermal actuator 4. The housing 41 conducts the heat to the thermally expanding material 42 within the receiving cavity 411, causing the temperature of the thermally expanding material 42 to gradually increase and its volume to expand. Since the receiving cavity 411 extends along the first direction a, the volume expansion of the thermally expanding material 42 is limited by the sidewall of the receiving cavity 411, allowing it to expand only along the first direction a towards the side where the pushing member 43 is located, thus pushing the pushing member 43 to move along the first direction a. The pushing member 43 then transmits the motion to the reflector 3, driving the reflector 3 to move along the first direction a. As the thermally expanding material 42 absorbs more heat, its temperature continues to rise, its volume further expands, and the moving distance of the pushing member 43 also increases accordingly. The moving distance of the reflector 3 increases accordingly, and the dispersion of reflected heat gradually increases. When the temperature inside the cooking cavity 11 decreases, the thermal expansion material 42 cools and contracts, reducing its volume. The pushing member 43 and the reflecting member 3 can return to their original positions in the opposite direction to the first direction a under the action of the resetting member 5.

[0049] Through the above structure, the thermoactuator 4 in this embodiment utilizes the physical property of thermal expansion of the material 42 to directly convert the waste heat emitted by the radiant heating element 2 into mechanical energy to drive the reflector 3, eliminating the need for electric drive components such as motors and electromagnets, as well as additional control circuits. The driving force of the thermoactuator 4 comes entirely from the heat generated by the radiant heating element 2 itself during cooking, achieving dual utilization of heat. The radiant heating element 2 both heats the food and provides power for the position adjustment of the reflector 3, resulting in good energy-saving effects. Furthermore, the thermoactuator 4 has a simple structure, few parts, reliable operation, low manufacturing cost, and produces no noise during operation, making it suitable for long-term stable operation in the high-temperature environment of an oven.

[0050] Please see Figure 8 and Figure 9 In some embodiments of this application, the pusher 43 includes a first elastic member 431, which is configured to be compressed after the thermal expansion material 42 is heated and expands, and to drive the reflector 3 to move along the first direction a by its own elastic force.

[0051] In this embodiment, the pushing member 43 includes a first elastic member 431, which is disposed within the receiving cavity 411 of the thermal actuator 4, located on the transmission path between the thermally expanding material 42 and the reflector 3. The first elastic member 431 can be a compression spring, a sheet spring, or other elastic element capable of elastic deformation after being subjected to force. The first elastic member 431 is configured to undergo compression deformation after the thermally expanding material 42 expands due to heat, and drive the reflector 3 to move along the first direction a through its own elastic force. This working method differs from that of a rigid pushing member that directly transmits the expansion displacement of the thermally expanding material 42 to the reflector 3. When the thermally expanding material 42 expands due to heat, its volume increases, generating pressure within the receiving cavity 411. This pressure acts on the first elastic member 431, causing it to be compressed and storing elastic potential energy in the process. As the temperature of the thermally expanding material 42 continues to rise and its volume further expands, the deformation of the first elastic member 431 gradually increases, and its stored elastic force also increases accordingly. When the elastic force of the first elastic element 431 is sufficient to overcome the supporting force or restoring force of the reflector 3, the first elastic element 431 begins to drive the reflector 3 to move along the first direction a through its stored elastic force.

[0052] Using the first elastic element 431 as the pushing element 43 provides buffering and smooth transmission. The volume expansion of the thermally expanding material 42 during heating is not uniform, especially during the phase transition stage where a relatively rapid volume change may occur. If the pushing element 43 is rigid, this rapid expansion will be directly and instantaneously transmitted to the reflecting element 3, causing uneven movement of the reflecting element 3 and even impact vibration. The first elastic element 431 absorbs the instantaneous fluctuations of the volume change of the thermally expanding material 42 through its own elastic deformation, converting the rigid expansion displacement into a flexible elastic thrust, making the movement of the reflecting element 3 smoother and more stable. When the thermally expanding material 42 expands to its limit or the reflecting element 3 becomes stuck due to external factors and cannot continue moving, the first elastic element 431 can further undergo elastic deformation to absorb excessive expansion displacement, preventing excessive pressure inside the receiving cavity 411 from causing the shell 41 to rupture or the thermally expanding material 42 to leak, thus providing overload protection.

[0053] Please see Figure 3 and Figure 5 In some embodiments of this application, the oven further includes a reset member 5, one end of which is connected to the reflector 3 and the other end of which is connected to the housing 1; when the temperature of the thermal actuator 4 decreases, the reset member 5 drives the reflector 3 to move and reset in a direction opposite to the first direction a.

[0054] In this embodiment, the oven also includes a reset member 5, which is used to drive the reflector 3 back to its initial position when the temperature of the thermal actuator 4 decreases. One end of the reset member 5 is connected to the reflector 3, and the other end of the reset member 5 is connected to the housing 1. The reset member 5 is disposed between the reflector 3 and the housing 1, providing the reflector 3 with a reset force opposite to the first direction a.

[0055] As the thermal actuator 4 drives the reflector 3 to move along the first direction a, the position of the reflector 3 changes, and the relative position between the reflector 3 and the housing 1 also changes accordingly. The reset member 5 undergoes a corresponding state change as the reflector 3 moves. When the temperature of the thermal actuator 4 decreases, the thermal expansion material 42 inside the thermal actuator 4 cools and contracts, reducing its volume, and the driving force applied by the thermal actuator 4 to the reflector 3 gradually weakens. At this time, the reset member 5 drives the reflector 3 to move in the opposite direction to the first direction a, causing the reflector 3 to gradually return from its moved position to its initial position. After the reflector 3 is reset, the reflected heat tends to converge again, and the heat coverage area shrinks accordingly.

[0056] By setting the reset component 5, the reflector 3 can automatically return to its initial position after the driving force of the thermal actuator 4 weakens, without the need for manual reset or an additional electronically controlled reset device. The reset component 5 works in conjunction with the thermal actuator 4. The thermal actuator 4 is responsible for driving the reflector 3 to move along the first direction a, and the reset component 5 is responsible for driving the reflector 3 to move and reset in the opposite direction. Together, they constitute a bidirectional driving system for the reflector 3, enabling the reflector 3 to reciprocate between different positions and achieve dynamic bidirectional control of the degree of heat dissipation.

[0057] Please see Figure 10 In some embodiments of this application, the reset member 5 includes a second elastic member 51, which is connected between the housing 1 and the reflector 3. When the temperature of the thermal actuator 4 decreases, the second elastic member 51 drives the reflector 3 to move and reset in the opposite direction to the first direction a through its own elastic force.

[0058] In this embodiment, the reset member 5 includes a second elastic member 51, which is connected between the housing 1 and the reflector 3. The second elastic member 51 is a component capable of elastic deformation after being subjected to force and returning to its original shape after the force is removed, such as a compression spring, tension spring, or spring sheet. One end of the second elastic member 51 is connected to the housing 1, and the other end is connected to the reflector 3, providing a reset driving force for the reflector 3 through its own elastic force.

[0059] As the thermal actuator 4 drives the reflector 3 to move along the first direction a, the position of the reflector 3 changes, and the relative position between the reflector 3 and the housing 1 also changes accordingly. Since the second elastic element 51 is connected between the housing 1 and the reflector 3, the movement of the reflector 3 causes the second elastic element 51 to undergo elastic deformation; that is, the second elastic element 51 is compressed or stretched as the reflector 3 moves, thereby storing elastic potential energy. When the temperature of the thermal actuator 4 decreases, the thermal expansion material 42 inside the thermal actuator 4 cools and contracts, reducing its volume, and the driving force applied by the thermal actuator 4 to the reflector 3 gradually weakens or disappears. At this time, the elastic potential energy previously stored in the second elastic element 51 is released, and the second elastic element 51 drives the reflector 3 to move in the opposite direction to the first direction a through its own elastic restoring force. Under the action of the second elastic element 51, the reflector 3 gradually returns to its initial position.

[0060] By setting the reset element 5 as the second elastic element 51, the automatic reset of the reflector 3 is achieved by utilizing the elastic deformation and recovery characteristics of the elastic element itself. The structure is simple and requires no additional power source or control device. The second elastic element 51 works in conjunction with the thermal actuator 4. When the thermal actuator 4 drives the reflector 3 to move along the first direction a, the second elastic element 51 is compressed or stretched and stores elastic potential energy; when the driving force of the thermal actuator 4 weakens or disappears, the second elastic element 51 releases elastic potential energy to drive the reflector 3 to reset. The two form a complementary bidirectional drive system, enabling the reflector 3 to repeatedly adjust between the focused state and the defocused state according to the temperature change of the thermal actuator 4, realizing dynamic bidirectional control of the degree of heat dissipation.

[0061] like Figure 10 As shown, in order to connect the second elastic element 51 with the housing 1 and the reflector 3, a connecting cap 52 is provided at one end of the second elastic element 51, and the second elastic element 51 is connected to the housing 1 through the connecting cap 52. A connecting ear 53 is provided on the reflector 3, and the second elastic element 51 is connected to the reflector 3 through the connecting ear 53.

[0062] Please see Figure 2 and Figure 3 In some embodiments of this application, the radiant heating element 2 is disposed at the top of the cooking cavity 11, and the reflector 3 is disposed between the top wall of the cooking cavity 11 and the radiant heating element 2. The reflector 3 is suspended from the housing 1 by the second elastic element 51.

[0063] In this embodiment, the radiant heating element 2 is disposed at the top of the cooking cavity 11, that is, the radiant heating element 2 is installed in the upper region of the cooking cavity 11. When the radiant heating element 2 is working, the downward side radiates heat to the food in the cooking cavity 11, and the upward side radiates heat to the top wall of the cooking cavity 11.

[0064] The reflector 3 is disposed between the top wall of the cooking cavity 11 and the radiant heating element 2, that is, the reflector 3 is located above the radiant heating element 2 and below the top wall of the cooking cavity 11. The reflector 3 is located on the side of the radiant heating element 2 away from the cooking cavity 11, and is used to reflect the heat radiated upward by the radiant heating element 2 back into the cooking cavity 11, reducing heat loss towards the top wall and improving heat utilization efficiency. The reflector 3 can be a metal reflector or other plate-like structure with heat radiation reflection capability.

[0065] The reflector 3 is suspended from the housing 1 by a second elastic element 51. One end of the second elastic element 51 is connected to the housing 1, for example, to the top wall of the cooking cavity 11 or a mounting bracket on the top wall, and the other end of the second elastic element 51 is connected to the reflector 3. The reflector 3, suspended by the second elastic element 51, is located in the space between the radiant heating element 2 and the top wall of the cooking cavity 11. Suspended by the second elastic element 51, the reflector 3 can move along the first direction a under the drive of the thermal actuator 4, for example, moving downwards towards the radiant heating element 2 or upwards towards the top wall. During the movement, the second elastic element 51 elastically deforms along with the movement of the reflector 3. When the temperature of the thermal actuator 4 decreases and the driving force weakens, the second elastic element 51 uses its own elastic force to drive the reflector 3 to move and reset in the opposite direction to the first direction a, restoring the reflector 3 to its initial suspension position.

[0066] By placing the reflector 3 between the top wall of the cooking cavity 11 and the radiant heating element 2, and suspending it with the second elastic element 51, the reflector 3 makes full use of the space between the radiant heating element 2 and the top wall, resulting in a compact layout that does not occupy the effective cooking space of the cooking cavity 11. The suspended installation eliminates sliding friction during movement, minimizing resistance and allowing for smooth and flexible movement. Simultaneously, the second elastic element 51 serves both as a suspension support for the reflector 3 and as a reset drive for it, offering dual functionality, a simple structure, and a small number of parts.

[0067] Please see Figure 4 and Figure 5 In some embodiments of this application, the oven includes a plurality of radiant heating elements 2, and each radiant heating element 2 is provided with at least one thermal actuator 4 in its corresponding area, so that each thermal actuator 4 drives the reflector 3 to change its position and / or angle according to the heating state of the corresponding radiant heating element 2, so as to change the heat distribution reflected by the reflector 3 to the cooking cavity 11.

[0068] In this embodiment, the oven includes multiple radiant heating elements 2, all of which are disposed within the cooking cavity 11. The radiant heating elements 2 are arranged at intervals along the width, depth, or other directions of the cooking cavity 11, each corresponding to a different heating area within the cooking cavity 11. At least one thermal actuator 4 is disposed in the area corresponding to each radiant heating element 2. The thermal actuator 4 is positionally aligned with the corresponding radiant heating element 2 so that it can absorb the heat emitted by the corresponding radiant heating element 2.

[0069] Each thermal actuator 4 is connected to a reflector 3, and each thermal actuator 4 independently drives the part of the reflector 3 to which it is connected. By controlling the heating of each radiant heating element 2, different radiant heating elements 2 can be in different working states, such as only turning on some radiant heating elements 2, heating each radiant heating element 2 with different power, or turning on each radiant heating element 2 sequentially. Since each thermal actuator 4 mainly absorbs the heat emitted by the corresponding radiant heating element 2, the difference in the heating state of different radiant heating elements 2 results in different degrees of heating for each thermal actuator 4, and the driving force and displacement generated by each thermal actuator 4 are also different. Each thermal actuator 4 drives different parts of the reflector 3 to produce different amounts of movement, thereby changing the position and / or angle of the reflector 3 as a whole.

[0070] Changing the position of reflector 3 means that reflector 3, as a whole, translates along a certain direction, thus changing the distance between reflector 3 and radiant heating element 2. Changing the angle of reflector 3 means that different parts of reflector 3 move at different rates, causing reflector 3 to tilt or flip, thus changing the tilt angle of reflector 3 relative to radiant heating element 2. The position and angle of reflector 3 can be changed individually or simultaneously. Changes in the position and / or angle of reflector 3 alter the heat distribution reflected into cooking cavity 11, adjusting the heat distribution ratio, coverage area, or heat density distribution in different areas within cooking cavity 11.

[0071] Please see Figure 11 In some embodiments of this application, the plurality of radiant heating elements 2 include a first radiant heating element 21 and a second radiant heating element 22. The first radiant heating element 21 and the second radiant heating element 22 are spaced apart on opposite sides of the cooking cavity 11 along the width direction of the cooking cavity 11. The first radiant heating element 21 is correspondingly provided with a first thermal actuator 44, and the second radiant heating element 22 is correspondingly provided with a second thermal actuator 45. The first thermal actuator 44 and the second thermal actuator 45 are respectively connected to the reflector 3 so that when the heating states of the first radiant heating element 21 and the second radiant heating element 22 are different, the first thermal actuator 44 and the second thermal actuator 45 drive the reflector 3 to move differently, so that the reflector 3 tilts.

[0072] In this embodiment, the plurality of radiant heating elements 2 include a first radiant heating element 21 and a second radiant heating element 22, which are spaced apart on opposite sides of the cooking cavity 11 along its width. That is, viewed from the width of the cooking cavity 11, the first radiant heating element 21 is located on one side of the cooking cavity 11, and the second radiant heating element 22 is located on the other side, respectively covering the heating areas on the left and right sides of the cooking cavity 11. A first thermal actuator 44 is correspondingly provided for the first radiant heating element 21, and a second thermal actuator 45 is correspondingly provided for the second radiant heating element 22. There can be one or more first thermal actuators 44, which are positioned opposite to the first radiant heating element 21 and mainly absorb the heat emitted by the first radiant heating element 21; there can also be one or more second thermal actuators 45, which are positioned opposite to the second radiant heating element 22 and mainly absorb the heat emitted by the second radiant heating element 22. The first thermal actuator 44 and the second thermal actuator 45 are respectively connected to the reflector 3. The first thermal actuator 44 drives the area on the reflector 3 near the first radiant heating element 21, and the second thermal actuator 45 drives the area on the reflector 3 near the second radiant heating element 22. The two drive different parts of the reflector 3 independently.

[0073] When the heating states of the first radiant heating element 21 and the second radiant heating element 22 are different, the degree of heating of the first thermal actuator 44 and the second thermal actuator 45 is different, and the driving force and displacement generated by them are also different, thus driving the reflector 3 to move differently. Different heating states refer to differences in the heating power, heating duration, or start / stop state of the first radiant heating element 21 and the second radiant heating element 22. For example, only the first radiant heating element 21 is heated while the second radiant heating element 22 is not heated, or the first radiant heating element 21 is heated at a higher power while the second radiant heating element 22 is heated at a lower power. In these cases, the first thermal actuator 44 absorbs more heat than the second thermal actuator 45, and the thermal expansion material 42 inside the first thermal actuator 44 expands more. Therefore, the distance the first thermal actuator 44 drives the reflector 3 to move to the side corresponding to the first radiant heating element 21 is greater than the distance the second thermal actuator 45 drives the reflector 3 to move to the side corresponding to the second radiant heating element 22.

[0074] Due to the different amounts of movement on both sides of the reflector 3, the reflector 3 tilts. The side of the reflector 3 corresponding to the first radiant heating element 21 moves more, while the side corresponding to the second radiant heating element 22 moves less or not at all, resulting in an overall tilted posture with one side higher than the other. The tilt angle and direction of the reflector 3 depend on the degree of difference in the heating states of the first radiant heating element 21 and the second radiant heating element 22. The greater the difference, the greater the difference in movement on both sides, and the larger the tilt angle; the smaller the difference, the smaller the difference in movement on both sides, and the smaller the tilt angle. When the heating states of the first radiant heating element 21 and the second radiant heating element 22 are the same, the amount of movement on both sides is the same, and the reflector 3 moves as a whole without tilting.

[0075] By controlling the heating states of the first radiant heating element 21 and the second radiant heating element 22, the difference in movement between the two sides of the reflector 3 can be adjusted, thereby controlling the tilt direction and tilt angle of the reflector 3. After the reflector 3 is tilted, the orientation of its reflective surface changes, and the heat distribution reflected into the cooking cavity 11 changes accordingly. By adjusting the heating states of the two radiant heating elements 2, the dynamic distribution of reflected heat on the left and right sides of the cooking cavity 11 can be achieved, so that the heat distribution matches the actual food distribution.

[0076] The above are merely preferred embodiments of this application and are not intended to limit this application. The technical solutions of the various embodiments in this application can be arbitrarily combined without conflict, and the resulting technical solutions also fall within the protection scope of this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An oven, characterized in that, The oven includes: The container; the container has a cooking cavity; Radiant heating element; the radiant heating element is disposed inside the cooking cavity; A reflector; the reflector is disposed on the side of the radiant heating element away from the cooking cavity, and is used to reflect the heat radiated by the radiant heating element to the cooking cavity; A thermal actuator; the thermal actuator is connected to the reflector, the thermal actuator includes a thermally expanding material, the thermally expanding material expands after being heated by the radiant heating element, driving the reflector to move along a first direction, so as to change the degree of heat dispersion reflected by the reflector to the cooking cavity; The distance the reflector moves along the first direction increases as the temperature of the thermal actuator rises, and the degree of dispersion of heat reflected by the reflector to the cooking cavity increases as the moving distance increases.

2. The oven as described in claim 1, characterized in that, When the reflector is in its initial position, it reflects the heat radiated by the radiant heating element to the central region of the cooking cavity. When the reflector moves along the first direction, the heat reflected by the reflector to the cooking cavity diffuses from the central region to the edge region of the cooking cavity.

3. The oven as described in claim 1 or 2, characterized in that, The thermal actuator further includes a housing and a pusher, the housing having a receiving cavity extending along the first direction, the housing being connected to the housing body, and the thermal expansion material being disposed within the receiving cavity; One end of the pusher extends into the receiving cavity and contacts the thermally expanding material, and the other end of the pusher is connected to the reflector. After the thermally expanding material is heated and expands, it pushes the pusher to move along the first direction, thereby driving the reflector to move along the first direction.

4. The oven as described in claim 3, characterized in that, The pushing member includes a first elastic member configured to be compressed after the thermally expanding material is heated and to drive the reflector to move along the first direction by its own elastic force.

5. The oven as described in claim 1 or 2, characterized in that, The oven also includes a reset component, one end of which is connected to the reflector and the other end of which is connected to the oven body; When the temperature of the thermal actuator decreases, the reset member drives the reflector to move and reset in a direction opposite to the first direction.

6. The oven as described in claim 5, characterized in that, The reset component includes a second elastic component, which is connected between the housing and the reflector. When the temperature of the thermal actuator decreases, the second elastic element drives the reflector to move and reset in a direction opposite to the first direction through its own elastic force.

7. The oven as described in claim 6, characterized in that, The radiant heating element is disposed at the top of the cooking cavity, and the reflector is disposed between the top wall of the cooking cavity and the radiant heating element. The reflector is suspended from the housing by the second elastic element.

8. The oven as described in claim 1 or 2, characterized in that, The oven includes a plurality of radiant heating elements, and each radiant heating element has at least one thermal actuator in its corresponding area, such that each thermal actuator drives the reflector to change its position and / or angle according to the heating state of the corresponding radiant heating element, thereby changing the heat distribution reflected by the reflector to the cooking cavity.

9. The oven as described in claim 8, characterized in that, The plurality of radiant heating elements include a first radiant heating element and a second radiant heating element. The first radiant heating element and the second radiant heating element are spaced apart on opposite sides of the cooking cavity along the width direction of the cooking cavity. The first radiant heating element is correspondingly provided with a first thermal actuator, and the second radiant heating element is correspondingly provided with a second thermal actuator. The first thermal actuator and the second thermal actuator are respectively connected to the reflector so that when the heating states of the first radiant heating element and the second radiant heating element are different, the first thermal actuator and the second thermal actuator drive the reflector to move differently, so that the reflector tilts.

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