A drawer type door body, a steam oven and a control method

Abstract

The present disclosure relates to a drawer type door body, a steam oven and a control method. The steam oven comprises an outer shell and an oven body. The drawer type door body comprises a guide rail assembly, a door body assembly and a control assembly. The guide rail assembly comprises a sliding groove and a sliding rod. The door body assembly is slidingly installed on the front side of the oven body. The door body assembly comprises a door body and a thermoelectric power generation module. The door body is used to seal the front side opening of the oven body. The thermoelectric power generation module is arranged on the door body. The control assembly comprises a control panel, a control switch, a magnetic part and an electromagnetic driving part. The control switch is arranged on the door body. The magnetic part is arranged on one of the sliding rod and the sliding groove. The electromagnetic driving part is arranged on the other one. The control panel is arranged in the chamber space between the oven body and the outer shell. The control panel is electrically connected with the thermoelectric power generation module, the control switch and the electromagnetic driving part respectively. The control panel receives the signal of the control switch and controls the electromagnetic force of the electromagnetic driving part. The present disclosure can solve the problem of serious shaking when the drawer type steam oven is opened.

Description

Technical Field

[0001] This disclosure relates to the field of steam oven technology, and in particular to a drawer-type door, a steam oven, and a control method. Background Technology

[0002] A steam oven is a household kitchen appliance with steaming or baking functions. Currently, steam ovens come in two types of door configurations: flip-up doors and drawer doors. However, drawer doors have the following drawbacks: due to the sealing structure, drawer doors are difficult to pull out smoothly, require a lot of force to open, and wobble significantly. Summary of the Invention

[0003] To address at least one of the aforementioned technical problems, this disclosure provides a drawer-type door, a steam oven, and a control method.

[0004] According to some embodiments of this disclosure, a drawer-type door is provided for use in a steam oven. The steam oven includes an outer shell and a cabinet disposed inside the outer shell. The drawer-type door includes a guide rail assembly, a door assembly, and a control assembly. The guide rail assembly is disposed on both outer sides of the cabinet and includes a slide groove and a slide rod. The slide groove is fixedly installed on the outer side of the cabinet, and the slide rod is slidably installed in the slide groove. The door assembly is slidably installed on the front side of the cabinet via the guide rail assembly. The door assembly includes a door body and a thermoelectric generator module. The rear side of the door body is connected to the front end of the slide rod. The door body is used to open the front side of the cabinet. The door is sealed, and the thermoelectric generator module is mounted on the door body. The control assembly includes a control board, a control switch, a magnetic component, and an electromagnetic drive component. The control switch is mounted on the door body, the magnetic component is mounted on one of the slide rod and the slide groove, and the electromagnetic drive component is mounted on the other. The magnetic component and the electromagnetic drive component correspond to each other and are both located at the rear end of the guide rail assembly. The control board is located in the cavity space between the housing and the outer shell. The control board is electrically connected to the thermoelectric generator module, the control switch, and the electromagnetic drive component. The control board receives signals from the control switch and controls the electromagnetic force of the electromagnetic drive component.

[0005] Based on the above solution, the automatic sliding of the guide rail assembly is achieved through the cooperation of magnetic components and electromagnetic drive components, thereby realizing the automatic opening and closing of the drawer-type door. This avoids the shaking and instability of manual opening and the impact noise when closing the door. At the same time, the waste heat inside the oven is absorbed by the thermoelectric generator module to provide power, thus achieving the effect of energy saving and environmental protection.

[0006] In some possible implementations, the door body includes an outer glass and an inner glass spaced apart, the outer glass being located in front of the inner glass, and the thermoelectric power generation module being disposed between the outer glass and the inner glass.

[0007] Based on the above scheme, by setting inner and outer glass, the temperature difference between the two layers of glass is large, and the power generation efficiency of the temperature difference power generation module set in the middle is high, which can improve the waste heat recovery rate of the steam oven, thereby realizing the effective utilization of energy.

[0008] In some possible implementations, the door assembly further includes a human-sensing module for detecting the directional distance of the user relative to the steam oven.

[0009] Based on the above solution, the human sensing module detects the user's direction and distance relative to the steam oven, thereby ensuring that the user is in a safe position, avoiding scalding from steam when the steam oven door is opened, and improving the safety of the steam oven during use.

[0010] In some possible implementations, the control component further includes a ranging module disposed on the guide rail assembly, the ranging module acquiring the distance between the magnetic component and the electromagnetic drive component and sending it to the control board.

[0011] Based on the above scheme, the control board can adjust the direction and magnitude of the electromagnetic force in real time according to the distance between the magnetic component and the electromagnetic drive component obtained by the ranging module, thereby controlling the opening and closing speed of the drawer door and achieving the effect of flexible door opening and closing.

[0012] According to some other embodiments of this disclosure, a steam oven is provided, including an outer shell and a cabinet disposed inside the outer shell, and also including a drawer-type door as described in any of the above embodiments.

[0013] According to some embodiments of this disclosure, a control method for a drawer-type door is provided, based on a drawer-type door according to any one of the above embodiments. The drawer-type door is installed in a steam oven. The drawer-type door includes a guide rail assembly, a door assembly, and a control assembly. The control method includes: when the drawer-type door is in the open state, triggering a control switch on the door assembly; the control board in the control assembly receives a signal from the control switch and controls the electromagnetic direction of an electromagnetic drive on the guide rail assembly, such that the electromagnetic drive is opposite to the magnetic component on the guide rail assembly, and the electromagnetic drive and the magnetic component attract each other, controlling the slide bar of the guide rail assembly to slide backward, thus closing the drawer-type door; when the drawer-type door is in the closed state, triggering the control switch; the control board receives a signal from the control switch and controls the electromagnetic direction of the electromagnetic drive, such that the electromagnetic drive and the magnetic component are the same, and the electromagnetic drive and the magnetic component repel each other, controlling the slide bar to slide forward, thus opening the drawer-type door.

[0014] Based on the above solution, the electromagnetic direction of the electromagnetic drive component can be controlled by the signal of the control switch, thereby realizing automatic door opening and closing and avoiding the shaking problem of manual door opening and closing.

[0015] In some possible implementations, the control component includes a ranging module disposed on the guide rail assembly. The ranging module acquires the distance between the magnetic component and the electromagnetic drive component and sends it to the control board. The control method further includes flexible door closing control, which includes: acquiring the distance between the magnetic component and the electromagnetic drive component through the ranging module during the closing process of the drawer-type door; and controlling the electromagnetic force of the electromagnetic drive component through the control board based on the distance between the magnetic component and the electromagnetic drive component, such that the electromagnetic force decreases as the distance decreases.

[0016] Based on the above solution, the distance between the magnetic component and the electromagnetic drive component is measured in real time by the distance measuring module, and the electromagnetic force of the electromagnetic drive component is adjusted in a timely manner according to the distance. This can avoid collision between the magnetic component and the electromagnetic drive component, thereby avoiding damage to mechanical parts and noise problems, extending the service life of the door, and improving the user experience.

[0017] In some possible implementations, the control method further includes venting control, which includes: when the steam oven is in operation, after receiving a signal from a control switch, the control board controls the electromagnetic direction and electromagnetic force of the electromagnetic drive component, causing the slide bar to slide forward; the ranging module acquires the distance between the magnetic component and the electromagnetic drive component and sends it to the control board; when the distance between the magnetic component and the electromagnetic drive component reaches a preset distance, the control board controls the slide bar to stop sliding.

[0018] Based on the above solution, the door is opened after the steam oven has finished operating, and the opening distance is limited to a preset distance to facilitate the venting of steam and prevent the door from opening too wide, which could cause steam to rush onto the user's face and burn them. This protects the user's safety and improves the user experience.

[0019] In some possible implementations, the steam oven further includes a function panel, which is communicatively connected to the control board. The control method further includes: after receiving a signal from a control switch, the control board sends a door opening request to the function panel; if the steam oven is not in operation, the function panel sends a normal door opening command to the control board, and upon receiving the normal door opening command, the control board controls the electromagnetic drive to demagnetize it; if the steam oven is in operation, the function panel sends a confirmation request until the user confirms, and then sends a safety door opening command to the control board; upon receiving the door opening command, the control board executes the venting control step.

[0020] Based on the above solution, adding a confirmation step for opening the door to the function panel can avoid accidental actions caused by accidental touches, achieve the design purpose of preventing touch, and improve the safety of the steam oven during use.

[0021] In some possible implementations, the door assembly further includes a human sensing module for detecting the user's positional distance relative to the steam oven; the control method further includes: after receiving a signal from the control switch, the control board obtains the user's positional distance relative to the steam oven through the human sensing module; if the user's positional distance relative to the steam oven meets a preset condition, the control board terminates the current door opening action.

[0022] Based on the above solution, the user's location information is obtained through the human sensing module. When the user is in an unsafe position, the steam oven cannot complete the door opening command, thus avoiding steam burns to the user and reducing the user's operational risks.

[0023] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure.

[0024] Other features and aspects of this disclosure will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0025] To more clearly illustrate the technical solutions and advantages in the embodiments or prior art of this specification, the drawings used in the description of the embodiments or prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this specification. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 A perspective structural diagram of a steam oven according to an embodiment of the present disclosure is shown;

[0027] Figure 2 A right-side structural view of a steam oven according to an embodiment of the present disclosure is shown;

[0028] Figure 3 A bottom view structural diagram of a steam oven according to an embodiment of the present disclosure is shown;

[0029] Figure 4 This diagram shows a right-side structural view of a drawer-type door according to an embodiment of the present disclosure;

[0030] Figure 5 This diagram shows a left-side structural view of a drawer-type door according to an embodiment of the present disclosure;

[0031] Figure 6 This diagram illustrates the three-dimensional structure of a door assembly according to an embodiment of the present disclosure. Figure 1 ;

[0032] Figure 7 This diagram illustrates the three-dimensional structure of a door assembly according to an embodiment of the present disclosure. Figure 2 .

[0033] In the picture:

[0034] 1. Outer shell; 2. Box body; 3. Guide rail assembly; 41. Door body; 411. Outer glass; 412. Inner glass; 42. Thermoelectric power generation module; 51. Control board; 52. Control switch; 53. Magnetic component; 54. Electromagnetic drive component. Detailed Implementation

[0035] The technical solutions in the embodiments of this specification will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this specification, and not all embodiments. Based on the embodiments in this specification, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0036] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or server that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or devices.

[0037] Various exemplary embodiments, features, and aspects of this disclosure will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.

[0038] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.

[0039] In this document, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A alone, A and B simultaneously, and B alone. Furthermore, the term "at least one" in this document means any combination of at least two of any one or more elements. For example, including at least one of A, B, and C can mean including any one or more elements selected from the set consisting of A, B, and C.

[0040] Unless otherwise specified, the directions in this article should be understood as follows: with the steam oven as the reference point, the direction of movement of the drawer door when opening is forward, and the direction of movement of the drawer door when closing is backward.

[0041] Furthermore, to better illustrate this disclosure, numerous specific details are set forth in the following detailed description. Those skilled in the art will understand that this disclosure can be practiced without certain specific details. In some instances, methods, means, components, and circuits well known to those skilled in the art have not been described in detail in order to highlight the main points of this disclosure.

[0042] A steam oven is a household kitchen appliance with steaming or baking functions. Currently, steam ovens come in two door configurations: flip-top doors and drawer doors. Most steam ovens have flip-top doors, while a smaller number have drawer doors. Drawer doors require manual pulling to open and close, which presents several drawbacks. To ensure steaming and baking functions and safety, drawer doors are equipped with a sealing structure. However, this sealing structure makes it difficult to pull the drawer door out smoothly, requiring significant opening force. Excessive force causes the drawer door to wobble considerably. Furthermore, closing the drawer door can cause impacts, which can shorten the lifespan of the steam oven and generate noise, reducing the user experience.

[0043] To address the aforementioned technical problems, this disclosure provides a drawer-type door, please refer to... Figures 1-3 This drawer-type door is used in a steam oven, which includes an outer shell 1 and a cabinet 2 disposed inside the outer shell 1. Both the outer shell 1 and the cabinet 2 have openings on their front sides. The drawer-type door slides from front to back on the steam oven, and after sliding to its maximum travel, it seals the cabinet 2 shut. Compared to drawer doors in related technologies, the drawer-type door of this embodiment has an automatic opening and closing function. The user triggers a control switch 52 on the drawer-type door, which automatically opens and closes, thus avoiding shaking and impact problems caused by manual opening and closing.

[0044] In this disclosed embodiment, please refer to Figures 4-7 The drawer-type door includes a guide rail assembly 3, a door assembly, and a control assembly. The guide rail assembly 3 is located on the left and right sides of the exterior of the box 2, while the door assembly is installed on the front side of the box 2. The door assembly is connected to the movable part of the guide rail assembly 3 to realize the function of sliding back and forth relative to the box 2. The control assembly includes multiple functional components, which are respectively located on the guide rail assembly 3, the door assembly, and the box 2. The control assembly is used to realize the automatic opening and closing function of the door.

[0045] Each guide rail assembly 3 includes a slide groove and a slide rod. The slide groove is fixedly installed on the outer side of the housing 2 and is horizontally positioned. The slide rod is slidably installed in the slide groove and slides in the front-to-back direction. During the sliding process, the rear end of the slide rod cannot disengage from the slide groove, while the front end of the slide rod is connected to the rear end of the door assembly. When the slide rod reaches its maximum sliding distance, the door assembly is completely closed. The door assembly includes a door body 41, which is a sealing structure used to seal the front opening of the housing 2 to ensure the integrity of the steam oven's steaming and / or baking functions.

[0046] In this embodiment, the automatic door opening and closing is based on electromagnetic induction; for details, please refer to... Figures 4-7The control assembly includes a control board 51, a control switch 52, a magnetic component 53, and an electromagnetic drive component 54. The control switch 52 is mounted on the door body 41, the magnetic component 53 is mounted on one of the slide rod and the slide groove, and the electromagnetic drive component 54 is mounted on the other. The magnetic component 53 and the electromagnetic drive component 54 correspond to each other and are both located at the rear end of the guide rail assembly 3. The control board 51 is located in the cavity space between the housing 2 and the outer shell 1. The control board 51 is electrically connected to the control switch 52 and the electromagnetic drive component 54 respectively.

[0047] In this embodiment, the magnetic component 53 is a magnetic part, which can be understood as a permanent magnet, such as a component made of iron, cobalt, or nickel. There is an interaction force between the two magnetic components 53. This interaction force manifests as attraction between opposite poles and repulsion between like poles; that is, there is a repulsive force between the same magnetic poles of the two magnetic components 53, and an attractive force between different magnetic poles. The electromagnetic drive component 54 is a variable-magnetic component, such as an electromagnet. Based on the principle of electromagnetic induction, the electromagnetic drive component 54 generates a magnetic field within a coil through current, thereby making the component magnetic. By changing the direction and magnitude of the current, the direction and magnitude of the electromagnetic force of the electromagnetic drive component 54 can be adjusted. Based on the above scheme, when the control switch 52 is triggered, the control switch 52 sends a signal to the control board 51. The control board 51 receives the signal from the control switch 52 and, combined with the current open / closed state of the oven door, controls the electromagnetic force of the electromagnetic drive component 54. Through the interaction force between the electromagnetic drive component 54 and the magnetic component 53, the electromagnetic drive component 54 and the magnetic component 53 move away from or closer to each other, thus opening or closing the door. It should be understood that there is an interaction force between any two magnets, and the core principle of the above scheme is to control the interaction force by adjusting the magnetism of the magnets. Therefore, the above scheme is not limited to the cooperative action of the magnetic component 53 and the electromagnetic drive component 54, but can also be the cooperative action of two electromagnetic drive components 54, with the two electromagnetic drive components 54 respectively set at the rear end of the slide rod and the rear end of the slide groove.

[0048] In this embodiment, since the door body 41 seals the front opening of the cabinet 2, a large force is required to open the oven door when it is closed, causing the door body 41 to detach from the cabinet 2. The opening force must then be adjusted immediately to prevent the door assembly from moving too quickly. Similarly, the closing force must be adjusted in real time during the closing process; otherwise, the door assembly will move too quickly, potentially causing an impact. Because the force for opening and closing the door is based on the interaction between the magnetic component 53 and the electromagnetic drive component 54, and this interaction is affected by both the distance between them and the driving current of the electromagnetic drive component 54, precise control of the opening and closing force is necessary.

[0049] The control assembly also includes a distance measuring module (not shown in the figure), which is mounted on the guide rail assembly 3. The distance measuring module is used to acquire the distance between the magnetic component 53 and the electromagnetic drive component 54 and send it to the control board 51. Based on the distance parameters acquired by the distance measuring module, the control board 51 can accurately determine the interaction force between the magnetic component 53 and the electromagnetic drive component 54. In addition, the control board 51 can also use the distance parameters acquired by the distance measuring module in conjunction with time information to determine the moving speed of the door assembly, thereby achieving negative feedback control and ensuring that the force and speed of opening and closing the door are maintained within a suitable range.

[0050] In this embodiment, the control component and the controller of the steam oven (used to control cooking functions such as steaming / baking / heating) are not limited to one. That is, the control component can be integrated with the controller of the steam oven, or it can be set up independently of the controller of the steam oven. Since there is a significant problem with the integrated controller solution, namely the difficulty in wiring from the door assembly to the inside of the steam oven, the control component is preferably configured to be set up independently of the controller of the steam oven. Therefore, a corresponding power supply component is also required for the control component. Referring to Figure X, the door assembly also includes a thermoelectric generator module 42, which is set on the door body 41. The thermoelectric generator module 42 is based on the thermoelectric power generation principle, using the temperature difference between the inside and outside of the steam oven during operation to convert it into electrical energy, effectively utilizing the waste heat generated during the operation of the steam oven to achieve energy recovery.

[0051] It's important to note that thermoelectric power generation is based on the thermoelectric effect. The thermoelectric effect refers to the generation of an electromotive force (EMF) when the junction of two different metals (or semiconductors) is subjected to a temperature difference. This effect, known as the Seebeck effect, arises from the difference in thermal motion of electrons between the two metals. Thermoelectric power generation utilizes this effect to convert temperature differences into electrical energy. The principle of thermoelectric power generation is as follows: First, two different metals (or semiconductors) are connected together; this is called a thermocouple. Then, one end of the thermocouple is exposed to a high-temperature environment, and the other end is exposed to a low-temperature environment. Due to the significant temperature difference between the high and low temperatures, an EMF is generated between the two metals—the thermoelectric effect. If the two ends of the thermocouple are connected to a circuit, this EMF can be converted into electrical energy, thus realizing thermoelectric power generation. In short, thermoelectric power generation is a technology that converts temperature differences into electrical energy, and its principle is based on the thermoelectric effect.

[0052] In this embodiment, the thermoelectric power generation module 42 should be placed in an area with a large temperature difference to ensure power generation efficiency. Furthermore, due to the sealing characteristics of the steam oven, placing the thermoelectric power generation module 42 on the door provides the best power generation effect. For a specific implementation, please refer to... Figures 6-7The door body 41 includes an outer glass 411 and an inner glass 412 spaced apart. The outer glass 411 is located in front of the inner glass 412, meaning the outer glass 411 is closer to the user, while the inner glass 412 is closer to the cabinet 2. The inner glass 412 is used to seal the front opening of the cabinet 2. The gap between the outer glass 411 and the inner glass 412 is to avoid heat loss and thus affect cooking efficiency. The food status during cooking can also be observed in real time through the outer glass 411 and the inner glass 412. Based on the double-layer glass structure, the aforementioned thermoelectric generator 42 is placed between the outer glass 411 and the inner glass 412. Since the inner glass 412 is in direct contact with the cabinet 2, while the outer glass 411 is in contact with the ambient air, the temperature difference between the inner glass 412 and the outer glass 411 is relatively large, resulting in good power generation efficiency of the thermoelectric generator 42.

[0053] It should be understood that the power supply component of the control component is not limited to the thermoelectric power generation module 42 in the embodiments of this disclosure. The power supply component may also be other forms of fixed power supply components or power generation components, such as batteries, photovoltaic power generation, etc. In some possible cases, the power supply component of the control component may be a combination of multiple devices, such as a combination of thermoelectric power generation module 42 and battery.

[0054] In this embodiment, the door assembly also includes a human sensing module (not shown in the figure). The human sensing module is used to detect the user's position relative to the oven. The oven obtains the user's position information through the human sensing module and can issue an alarm or restrict some functions when the user gets too close to the oven, thereby avoiding accidental activation or other risks. For example, when the oven has just finished steaming or is in the process of steaming, if the user gets too close to the oven door body 41 when triggering the control switch 52, the human sensing module detects the user's position information and restricts the door from opening until the user moves to a safe distance. In the above solution, the specific selection and configuration of the human sensing module is not limited. The human sensing module can be one or more of radar, infrared modules, and other sensing modules. In addition, the human sensing module is not limited to detecting only human bodies. The human sensing module can also detect non-living objects. For example, it can detect whether there are foreign objects on the front of the oven that affect the opening of the door; or whether there are foreign objects placed on the top of the oven that affect heat dissipation.

[0055] This disclosure also provides a control method for a drawer-type door, implemented based on a drawer-type door as described in any of the above embodiments. The control method includes opening control and closing control.

[0056] The door closing control includes triggering a control switch 52 on the door assembly when the drawer door is in the open state. The control board 51 in the control assembly receives the signal from the control switch 52 and controls the electromagnetic direction of the electromagnetic drive 54 on the guide rail assembly 3, so that the electromagnetic drive 54 and the magnetic element 53 on the guide rail assembly 3 have opposite magnetic properties. The electromagnetic drive 54 and the magnetic element 53 attract each other, controlling the slide bar of the guide rail assembly 3 to slide backward, and the drawer door closes.

[0057] The door opening control includes triggering the control switch 52 when the drawer door is in the closed state. The control board 51 receives the signal from the control switch 52 and controls the electromagnetic direction of the electromagnetic drive 54 so that the electromagnetic drive 54 and the magnetic component 53 have the same magnetism and repel each other. This controls the slide bar to slide forward and the drawer door to open.

[0058] In the above control method, the specific travel of the door opening and closing is not limited. That is to say, the door opening and closing is fully automatic. After the user triggers the control switch 52, the door assembly automatically moves backward to be fully closed or automatically moves forward to be fully open. Alternatively, the door opening and closing can also be partially automatic. For example, only half of the door assembly's travel is automatically controlled, while the other half is manually controlled by the user. In a corresponding scenario, the user can manually adjust the distance the door assembly opens based on their own needs so that the corresponding volume of material can be placed in the steam oven. Then, the user can push the door assembly to the half-travel position of the automatic control and trigger the control switch 52 again, and the door assembly will automatically move backward to be fully closed.

[0059] Based on the above embodiments, in order to accurately control the force of opening and closing door 52 (i.e., the interaction force between the magnetic component 53 and the electromagnetic drive component 54), the control component includes a distance measuring module. The distance measuring module is mounted on the guide rail assembly 3. The distance measuring module acquires the distance between the magnetic component 53 and the electromagnetic drive component 54 and sends it to the control board 51. Based on the distance measuring module, the control board 51 can achieve flexible door closing control, which includes:

[0060] During the closing process of the drawer door, the distance between the magnetic component 53 and the electromagnetic drive component 54 is obtained through the distance measuring module;

[0061] Based on the distance between the magnetic component 53 and the electromagnetic drive component 54, the electromagnetic force of the electromagnetic drive component 54 is controlled by the control board 51, so that the electromagnetic force decreases as the distance decreases.

[0062] In this embodiment, the specific curve of electromagnetic force variation is not limited; that is, the relationship between electromagnetic force and distance can be linear or nonlinear. It should be understood that the purpose of controlling the electromagnetic force is to control the movement state of the drawer door. Therefore, the specific control process of the electromagnetic force is determined by the movement process of the drawer door. In the above-mentioned flexible closing control, since the interaction force of the magnetic components increases as the distance decreases, the magnetic field strength of the electromagnetic drive component 54 can be reduced, thereby reducing the electromagnetic force of the electromagnetic drive component 54. This keeps the interaction force between the magnetic component 53 and the electromagnetic drive component 54 balanced, preventing excessive impulse in the door assembly and thus solving the impact problem during closing. In a specific embodiment, during the closing process of the drawer door, the electromagnetic force of the electromagnetic drive component 54 is continuously reduced, making the magnetic force on the magnetic component 53 equal to the frictional force of the slide rod. The slide rod maintains a uniform sliding speed in the slide groove. When controlling the electromagnetic force of the electromagnetic drive component 54, the control board 51 simultaneously acquires the sliding speed of the slide rod, forming a closed-loop negative feedback control, thereby improving the control accuracy of the electromagnetic force.

[0063] In some possible application scenarios, when the steam oven has just finished cooking or is cooking, if the user opens the door, the high-pressure steam inside the oven body 2 will float out at high speed from the opening between the door body 41 and the oven body 2 and rush towards the user, which is a steam blast situation. The steam blast can, at best, restrict the user's vision and affect the user's experience of using the steam oven, and at worst, it can cause the user to be burned, which is a safety hazard.

[0064] To address the issue of steam blowing onto the face, this embodiment of the control method further includes venting control. Venting control includes: when the steam oven is in operation, after receiving a signal from the control switch 52, the control board 51 controls the electromagnetic direction and electromagnetic force of the electromagnetic drive component 54, causing the slide bar to slide forward. The distance measuring module acquires the distance between the magnetic component 53 and the electromagnetic drive component 54 and sends it to the control board 51. When the distance between the magnetic component 53 and the electromagnetic drive component 54 reaches a preset distance, the control board 51 controls the slide bar to stop sliding. Based on the above solution, when the door is opened after the steam oven is in operation, the door assembly only moves a short distance, creating a gap between the door body 41 and the cabinet 2. Steam is then released from the gap immediately, thus preventing steam from blowing onto the face.

[0065] Based on the above-described venting control scheme, once steam venting is complete, the subsequent door opening can be set to automatic or manual. In one specific embodiment, the subsequent opening is set to automatic. A smoke sensor is installed on the steam oven to monitor steam venting. Once venting is complete, the control board 51 controls the electromagnetic drive 54, causing the door assembly to move forward until fully open. In another specific embodiment, the subsequent opening is set to manual. After venting control is complete, the control board 51 controls the electromagnetic drive 54 to lose its electromagnetic force, allowing the user to manually pull the door assembly and freely adjust the size of the venting gap.

[0066] Based on the above embodiments, when a user uses a standardized door-opening operation, the venting control can effectively protect the user from steam burns upon opening the door. However, in some possible situations, the user's door-opening operation may be irregular. For example, the user may trigger the control switch 52 with one hand while the other hand is positioned above the door body 41; or a child may accidentally trigger the control switch 52 and be too close to the door body 41. In these cases, the steam venting from the gaps still poses a risk of scalding the user. To further ensure user safety, in this embodiment, the door assembly also includes a human sensor module, which is used to detect the user's positional distance relative to the steam oven. The control method further includes: after receiving the signal from the control switch 52, the control board 51 obtains the user's positional distance relative to the steam oven through the human sensor module. If the user's positional distance relative to the steam oven meets a preset condition, the control board 51 terminates the current door-opening action. In the above steps, the preset condition can be set according to actual needs. For example, the preset condition can be set to the user's distance relative to the steam oven being less than a safe distance; the preset condition can also be set to the user's distance relative to the door body 41 being less than a safe distance.

[0067] The above embodiments illustrate that when the steam oven is in operation or has just finished operating, there is a risk of burns if the user triggers the control switch 52 to open the door. Therefore, a venting control and a human position confirmation are set to improve safety. In addition, when the steam oven is running the cooking function, the environment inside the oven 2 will change. If the door is suddenly triggered, it will also cause the steam oven to malfunction, such as functional abnormalities or even damage.

[0068] To further enhance the safety performance of the steam oven, in this embodiment, the steam oven also includes a function panel, which is communicatively connected to the control board 51. The function panel is part of the steam oven's controller; users use it to turn on the steam oven, select corresponding cooking functions, and access other auxiliary functions such as timer settings. In this embodiment, a confirmation function is additionally provided on the function panel. Based on this confirmation function, the control method further includes: after receiving a signal from the control switch 52, the control board 51 sends a door opening request to the function panel; if the steam oven is not in operation, the function panel sends a normal door opening command to the control board 51, and upon receiving the normal door opening command, the control board 51 controls the electromagnetic drive 54 to demagnetize it; if the steam oven is in operation, the function panel sends a confirmation request until user confirmation, and then sends a safe door opening command to the control board 51, which, upon receiving the command, executes a venting control step. Based on this scheme, when the user triggers the control switch 52 while the steam oven is in operation, the oven will not open immediately but requires secondary confirmation from the function panel to complete the opening process, effectively preventing accidental triggering and providing a child lock function.

[0069] The above embodiments have described in detail a drawer-type door and control method of this disclosure. It should be noted that different embodiments can be freely combined without conflict. For example, when a steam oven opens its door during operation, it can simultaneously have a venting control and a door opening confirmation action.

[0070] This disclosure also provides a steam oven, please refer to... Figures 1-3 The oven includes an outer shell 1 and a housing 2 disposed inside the outer shell 1, and also includes a drawer-type door as described in any of the above embodiments. It should be understood that the steam oven of this disclosure is not limited to a steam oven-oven combo; it can be a steam oven with only steaming function, an oven with only baking function, or a kitchen appliance with both steam oven and oven functions, such as an integrated stove.

[0071] The various embodiments of this disclosure have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or technical improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A drawer-type door for use in a steam oven, the steam oven comprising an outer shell (1) and a cabinet (2) disposed inside the outer shell (1), characterized in that, The drawer door includes a guide rail assembly (3), a door assembly, and a control assembly. The guide rail assembly (3) is disposed on both sides of the outer side of the box (2). The guide rail assembly (3) includes a slide groove and a slide rod. The slide groove is fixedly installed on the outer side of the box (2), and the slide rod is slidably installed in the slide groove. The door assembly is slidably mounted on the front side of the box (2) via the guide rail assembly (3). The door assembly includes a door body (41) and a thermoelectric generator module (42). The rear side of the door body (41) is connected to the front end of the slide rod. The door body (41) is used to seal the front opening of the box (2). The door body (41) includes an outer glass (411) and an inner glass (412) spaced apart. The outer glass (411) is located in front of the inner glass (412). The thermoelectric generator module (42) is located between the outer glass (411) and the inner glass (412). The control assembly includes a control board (51), a control switch (52), a magnetic component (53), and an electromagnetic drive component (54). The control switch (52) is located on the door body (41), the magnetic component (53) is located on one of the slide rod and the slide groove, and the electromagnetic drive component (54) is located on the other. The magnetic component (53) and the electromagnetic drive component (54) correspond to each other and are both located at the rear end of the guide rail assembly (3). The control board (51) is located in the cavity space between the box body (2) and the outer shell (1). The control board (51) is electrically connected to the thermoelectric generator module (42), the control switch (52), and the electromagnetic drive component (54). The control board (51) receives the signal from the control switch (52) and controls the electromagnetic force of the electromagnetic drive component (54). The control component also includes a distance measuring module, which is disposed on the guide rail assembly (3). The distance measuring module acquires the distance between the magnetic component (53) and the electromagnetic drive component (54) and sends it to the control board (51).

2. The drawer-type door according to claim 1, characterized in that: The door assembly also includes a human sensing module, which is used to detect the user's directional distance relative to the steam oven.

3. A steam oven, comprising an outer shell (1) and a housing (2) disposed inside the outer shell (1), characterized in that: It also includes a drawer-type door according to any one of claims 1-2.

4. A control method for a drawer-type door, implemented based on a drawer-type door according to any one of claims 1-2, wherein the drawer-type door is installed in a steam oven, and the drawer-type door includes a guide rail assembly (3), a door assembly, and a control assembly, characterized in that, The control method includes: When the drawer door is in the open state, the control switch (52) on the door assembly is triggered. The control board (51) in the control assembly receives the signal from the control switch (52) and controls the electromagnetic direction of the electromagnetic drive (54) on the guide rail assembly (3), so that the electromagnetic drive (54) and the magnetic element (53) on the guide rail assembly (3) have opposite magnetic properties. The electromagnetic drive (54) and the magnetic element (53) attract each other, controlling the slide bar of the guide rail assembly (3) to slide backward, and the drawer door closes. When the drawer door is closed, the control switch (52) is triggered. The control board (51) receives the signal from the control switch (52) and controls the electromagnetic direction of the electromagnetic drive (54) so ​​that the electromagnetic drive (54) and the magnetic component (53) have the same magnetism. The electromagnetic drive (54) and the magnetic component (53) repel each other, controlling the slide bar to slide forward and opening the drawer door.

5. The control method for a drawer-type door according to claim 4, characterized in that, The control method further includes a flexible door closing control, which includes: During the closing process of the drawer door, the distance between the magnetic component (53) and the electromagnetic drive component (54) is obtained by the distance measuring module in the control component; Based on the distance between the magnetic component (53) and the electromagnetic drive component (54), the electromagnetic force of the electromagnetic drive component (54) is controlled by the control board (51) so that the electromagnetic force decreases as the distance decreases.

6. The control method for a drawer-type door according to claim 5, characterized in that, The control method further includes a venting control, wherein the venting control includes: When the steam oven is in operation, after receiving the signal from the control switch (52), the control board (51) controls the electromagnetic direction and electromagnetic force of the electromagnetic drive (54) so ​​that the slide bar slides forward. The distance measuring module obtains the distance between the magnetic component (53) and the electromagnetic drive (54) and sends it to the control board (51). When the distance between the magnetic component (53) and the electromagnetic drive component (54) reaches a preset distance, the control board (51) controls the slide bar to stop sliding.

7. The control method for a drawer-type door according to claim 6, characterized in that, The steam oven also includes a function panel, which is communicatively connected to the control board (51); The control method further includes: After receiving the signal from the control switch (52), the control board (51) sends a door opening request to the function panel; If the steam oven is not in working condition, the function panel sends a normal door opening command to the control board (51). After receiving the normal door opening command, the control board (51) controls the electromagnetic drive (54) to demagnetize it. If the steam oven is in operation, the function panel sends a confirmation request until the user confirms. Then the function panel sends a safety door opening command to the control board (51). After receiving the door opening command, the control board (51) executes the venting control steps.

8. The control method for a drawer-type door according to claim 7, characterized in that, The door assembly also includes a human sensing module, which is used to detect the directional distance of the user relative to the steam oven; The control method further includes: After receiving the signal from the control switch (52), the control board (51) obtains the distance of the user relative to the steam oven through the human sensing module. If the distance of the user relative to the steam oven meets the preset conditions, the control board (51) terminates the opening action.

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