Drawer type microwave oven and control method

Abstract

The invention relates to the technical field of household appliances, and provides a drawer type microwave oven and a control method.The drawer type microwave oven comprises an oven body, a drawer, a motor and a lighting assembly, the drawer is connected with the oven body, the motor is used for driving the drawer to move in the front-back direction relative to the oven body, and the lighting assembly comprises an oven lamp; the control method comprises the following steps: electrifying the drawer type microwave oven; controlling the oven lamp according to the state of the drawer-type microwave oven and the motor action. Compared with the prior art, the control method of the drawer type microwave oven has the advantages that on one hand, the use convenience is greatly improved; and on the other hand, the control flexibility is improved, the control mode is not limited to a single furnace door state control mode any more, the on-off state of the furnace lamp can be flexibly adjusted according to different use scenes and working conditions, the diversified use requirements of users are better met, and the user experience of the product is improved.

Description

Technical Field

[0001] This invention relates to the field of household appliance technology, and more specifically, to a drawer-type microwave oven and its control method. Background Technology

[0002] Most drawer-type microwave ovens are equipped with an oven light to illuminate the cavity, allowing consumers to observe the cooking process of food inside.

[0003] In existing microwave ovens, the oven light is controlled solely based on the door status: the light automatically turns on when the door is open and automatically turns off when the door is closed. While this control logic is simple, low-cost, and aligns with energy-saving principles, it is limited to a single door status control method, lacks flexibility, and cannot adequately meet diverse user needs.

[0004] In addition, in the existing technology, the central axis of the stove lamp is set perpendicular to the top wall of the cooking chamber, and the cooking chamber at the installation location of the stove lamp is recessed inward. On the one hand, it still occupies the space of the cooking chamber, reducing the usable area of ​​the cooking chamber; on the other hand, it reduces the structural strength of the cooking chamber; in addition, the stove lamp has poor heat dissipation.

[0005] In view of this, the present invention is hereby proposed. Summary of the Invention

[0006] The purpose of this invention is to propose a drawer-type microwave oven and its control method to solve the problem that the existing technology is limited to a single oven door status control method, which has poor control flexibility and cannot well meet the diverse usage needs of users.

[0007] To achieve the above objectives, the technical solution of the present invention is implemented as follows:

[0008] A control method for a drawer-type microwave oven, the drawer-type microwave oven including an oven body, a drawer, a motor, and a lighting assembly, wherein the drawer is connected to the oven body, the motor drives the drawer to move relative to the oven body in a front-to-back direction, and the lighting assembly includes an oven lamp.

[0009] The control method includes the following steps:

[0010] S1. Power on the drawer-type microwave oven;

[0011] S2. Control the oven light according to the status of the drawer-type microwave oven and the motor operation.

[0012] Furthermore, step S2 includes the following steps:

[0013] Step S2 includes the following steps:

[0014] S21. Determine whether the drawer-type microwave oven is in working condition;

[0015] S22. If the drawer-type microwave oven is in operation, the oven light will be turned on;

[0016] S23. If the drawer-type microwave oven is not in operation, determine whether the MCU has received a motor action command.

[0017] S24. If the MCU does not receive a motor operation command, the furnace light will be turned off.

[0018] Furthermore, step S2 also includes the following steps:

[0019] S25. If the MCU receives a motor action command, it determines whether the motor action direction is forward rotation to open the door or reverse rotation to close the door.

[0020] S26. If the door opens when the motor rotates forward, then enter the motor rotation door opening judgment mode;

[0021] S27. If the motor reverses to close the door, then enter the motor reverse closing judgment mode.

[0022] Furthermore, the motor-driven forward rotation door opening judgment mode specifically includes the following steps:

[0023] The door opens when the motor rotates forward.

[0024] The stove light was turned on.

[0025] Furthermore, the motor reversal door closing judgment mode includes the following steps:

[0026] The motor reverses to close the door;

[0027] Determine if the motor has stopped;

[0028] If the motor does not stop, the oven light will turn on.

[0029] Furthermore, the motor reversal door closing judgment mode also includes the following steps:

[0030] If the motor stops, obtain the motor FG voltage v;

[0031] Determine if the motor FG voltage v > the preset stall voltage threshold V3;

[0032] If the motor FG voltage v > the preset stall voltage threshold V3, the motor will stall and stop, and the furnace lamp will turn on;

[0033] If the motor FG voltage v ≤ the preset stall voltage threshold V3, the motor will not stop due to stall, and the furnace lamp will be turned off.

[0034] Furthermore, step S25 specifically includes the following steps:

[0035] S251. If the MCU receives a motor operation command, obtain the motor FG voltage v;

[0036] S252. Determine whether the motor FG voltage v > the first preset voltage threshold V1;

[0037] S253. If the motor FG voltage v > the first preset voltage threshold V1, then the motor rotates forward to open the door;

[0038] S254. If the motor FG voltage v ≤ the first preset voltage threshold V1, then determine whether the motor FG voltage v > the second preset voltage threshold V2.

[0039] S255. If the motor FG voltage v > the second preset voltage threshold V2, then the motor reverses to close the door.

[0040] Furthermore, step S24 specifically includes the following steps:

[0041] S241. If the MCU does not receive a motor operation command, then obtain the motor's FG voltage v;

[0042] S242. Determine whether the motor's FG voltage v > the preset motor stop threshold V4;

[0043] S243. If the motor's FG voltage v ≤ the preset motor stop threshold V4, then the furnace lamp is turned off;

[0044] S244. If the motor's FG voltage v > the preset motor stop threshold V4, then obtain the motor's FG voltage v1 after the first preset time t1.

[0045] S245. Determine whether the motor FG voltage v > the fifth preset voltage threshold V5 after the first preset time t1.

[0046] S246. If the motor FG voltage v > the fifth preset voltage threshold V5 after the first preset time t1, the MCU sends a forward rotation command, the motor rotates forward to open the door, and enters the motor forward rotation door opening judgment mode.

[0047] S247. If the motor FG voltage v ≤ the fifth preset voltage threshold V5 after the first preset time t1, the MCU sends a reverse command, the motor reverses to close the door, and enters the motor reverse door closing judgment mode.

[0048] Furthermore, the forward rotation of the motor to open the door also includes the following steps:

[0049] Obtain the motor FG voltage v;

[0050] Determine if the motor FG voltage v > the preset stall voltage threshold V3;

[0051] If the motor FG voltage v > the preset stall voltage threshold V3, the MCU sends a motor stop command, and the motor stops.

[0052] In a second aspect, the present invention provides a drawer-type microwave oven, wherein the drawer-type microwave oven uses any one of the above-described control methods for a drawer-type microwave oven.

[0053] Compared with the prior art, the drawer-type microwave oven and control method of the present invention have the following advantages:

[0054] 1) The drawer-type microwave oven and control method described in this invention greatly improve the convenience of use; the oven light can be controlled to turn on according to actual needs, so that users can clearly see the food inside the drawer even when the oven door is not fully opened, such as when the drawer is partially pulled out; on the other hand, it improves the flexibility of control; it is no longer limited to a single oven door status control method, but can flexibly adjust the on / off state of the oven light according to different usage scenarios and working conditions, better meet the diverse usage needs of users, and improve the user experience of the product.

[0055] 2) The drawer-type microwave oven and control method described in this invention have a central axis of the oven lamp parallel to the top wall. A protrusion is provided on the top wall of the inner liner, and a light-transmitting hole is provided on the protrusion. A heat dissipation hole structure is provided on the light-collecting protective lamp cover. On the one hand, this not only does not occupy the space of the heating cavity, but also increases the usable area of ​​the heating cavity. On the other hand, it increases the structural strength of the heating cavity and prevents the top wall from deforming due to heat, pressure and other factors generated during the installation or use of the lighting component. In addition, it improves the heat dissipation effect of the oven lamp, ensures the stability of the oven lamp during long-term operation, and further improves the performance of the entire lighting component. Attached Figure Description

[0056] Figure 1 This is one of the three-dimensional structural schematic diagrams of a drawer-type microwave oven according to an embodiment of the present invention;

[0057] Figure 2 This is a second three-dimensional structural schematic diagram of a drawer-type microwave oven according to an embodiment of the present invention;

[0058] Figure 3 This is the third three-dimensional structural schematic diagram of a drawer-type microwave oven according to an embodiment of the present invention;

[0059] Figure 4 This is the fourth three-dimensional structural schematic diagram of a drawer-type microwave oven according to an embodiment of the present invention;

[0060] Figure 5 This is a partially exploded three-dimensional structural diagram of a drawer-type microwave oven according to an embodiment of the present invention;

[0061] Figure 6 for Figure 5 Enlarged 3D structural diagram at point A;

[0062] Figure 7 This is one of the three-dimensional structural schematic diagrams of a light-absorbing protective lampshade for a drawer-type microwave oven according to an embodiment of the present invention;

[0063] Figure 8 This is a second three-dimensional structural schematic diagram of a light-absorbing protective lampshade for a drawer-type microwave oven according to an embodiment of the present invention;

[0064] Figure 9 This is the fifth three-dimensional structural schematic diagram of a drawer-type microwave oven according to an embodiment of the present invention;

[0065] Figure 10 This is the sixth three-dimensional structural schematic diagram of a drawer-type microwave oven according to an embodiment of the present invention;

[0066] Figure 11 This is a three-dimensional structural diagram of the drawer of a drawer-type microwave oven according to an embodiment of the present invention;

[0067] Figure 12 This is one of the flowcharts for a control method of a drawer-type microwave oven according to an embodiment of the present invention;

[0068] Figure 13 This is a second flowchart of a control method for a drawer-type microwave oven according to an embodiment of the present invention.

[0069] Explanation of reference numerals in the attached figures:

[0070] 100. Drawer-type microwave oven; 1. Oven body; 101. First air intake structure; 11. Outer shell; 111. Rear panel; 112. Top panel; 113. Bottom panel; 114. Right side panel; 12. Inner liner; 121. Top wall; 1211. Protrusion; 1212. Light transmission hole; 1213. Third mounting hole; 124. Rear wall; 125. Front panel; 1251. Air outlet; 16. Partition; 2. Drawer; 21. Door; 211. Door glass; 22. Supporting part; 3. Heating cavity; 30. First cavity 31. Fan assembly; 4. Microwave heating assembly; 40. Second cavity; 41. Magnetron; 6. Storage cavity; 70. Lighting assembly; 71. Oven lamp; 711. Fourth mounting hole; 72. Light-collecting protective lamp cover; 721. First mounting hole; 722. Second mounting hole; 723. Heat dissipation hole structure; 7231. First heat dissipation hole; 7232. Second heat dissipation hole; 7233. Third heat dissipation hole; 724. Clearance hole; 725. Mounting protrusion; 726. Mounting protrusion edge; 73. Flat light-transmitting lamp cover. Detailed Implementation

[0071] To make the technical means and objectives and effects of the present invention easier to understand, the embodiments of the present invention will be described in detail below with reference to specific illustrations.

[0072] It should be noted that all directional and positional terms used in this invention, such as "up," "down," "left," "right," "front," "back," "vertical," "horizontal," "inner," "outer," "top," "lower," "lateral," "longitudinal," and "center," are only used to explain the relative positional relationships and connections between components in a specific state (as shown in the accompanying drawings). They are merely for the convenience of describing the invention and do not require the invention to be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on the invention. Furthermore, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated.

[0073] In the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0074] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0075] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0076] Example 1

[0077] In the prior art, the central axis of the stove lamp 71 is set perpendicular to the top wall 121 of the cooking chamber, and the cooking chamber at the installation location of the stove lamp 71 is recessed inward. On the one hand, it still occupies the space of the cooking chamber, reducing the usable area of ​​the cooking chamber; on the other hand, it reduces the structural strength of the cooking chamber; in addition, the stove lamp 71 has poor heat dissipation.

[0078] To solve the above technical problems, such as Figures 1-11As shown, this embodiment proposes a drawer-type microwave oven 100, which includes an oven body 1 and a lighting assembly 70. The oven body 1 includes an inner liner 12, within which a heating cavity 3 is formed. A protrusion 1211 is provided on the top wall 121 of the inner liner 12, and a light-transmitting hole 1212 is provided on the protrusion 1211. The lighting assembly 70 is disposed above and outside the protrusion 1211, and the lighting assembly 70 includes:

[0079] A furnace lamp 71 is installed on the upper exterior of the inner liner 12, with its position corresponding to the light-transmitting hole 1212. The central axis of the furnace lamp 71 is parallel to the top wall 121.

[0080] A planar light-transmitting lampshade 73 protects the stove lamp 71 from oil stains, moisture, food residue, and other contaminants generated during cooking, thus extending the lifespan of the stove lamp 71. The planar light-transmitting lampshade 73 is positioned between the stove lamp 71 and the top wall 121.

[0081] A light-collecting protective lamp cover 72 is provided, which covers the outside of the furnace lamp 71. The furnace lamp 71 is mounted on the light-collecting protective lamp cover 72, and a heat dissipation hole structure 723 is provided on the light-collecting protective lamp cover 72.

[0082] In this embodiment, a drawer-type microwave oven 100 is provided. The light-transmitting hole 1212 serves as a channel for light to travel from the oven lamp 71 into the heating cavity 3, allowing the light emitted by the oven lamp 71 to illuminate the heating cavity 3 and provide illumination for the user to observe the cooking status of the food. The protrusion 1211 provides space for the light-transmitting hole 1212 and may also enhance the strength of the top wall 121 in this area. By providing the protrusion 1211 and the light-transmitting hole 1212, a suitable installation position and light channel are provided for the lighting component 70, so that the light can accurately illuminate the heating chamber 3. The oven lamp 71 is the light source of the lighting component 70, responsible for emitting light, and provides illumination to the cooking chamber through the light-transmitting hole 1212 and the flat light-transmitting lampshade 73. The flat light-transmitting lampshade 73 allows the light emitted by the oven lamp 71 to pass through, while performing a certain degree of scattering and homogenization of the light, making the light illuminating the cooking chamber softer and more uniform, avoiding local over-brightness or under-brightness, and improving the observation effect. The flat light-transmitting lampshade 73 can also protect the oven lamp 71 from the effects of oil stains, water vapor, food residue and other substances generated during the cooking process, and extend the service life of the oven lamp 71. The light-collecting and protective lampshade 72 not only collects and guides the light emitted by the oven lamp 71, allowing the light to be more concentrated and illuminate the cooking chamber through the light-transmitting hole 1212, thus improving lighting efficiency, but also protects the oven lamp 71 from collisions or damage by external objects. The heat dissipation hole structure 723 helps dissipate the heat generated by the oven lamp 71 during operation, reducing its temperature, ensuring normal operation, and extending its service life.

[0083] This embodiment proposes a drawer-type microwave oven 100, in which the central axis of the oven lamp 71 is arranged parallel to the top wall 121. A protrusion 1211 is provided on the top wall 121 of the inner liner 12, and a light-transmitting hole 1212 is provided on the protrusion 1211. A heat dissipation hole structure 723 is provided on the light-collecting protective lamp cover 72. On the one hand, it not only does not occupy the space of the heating cavity 3, but also increases the usable area of ​​the heating cavity 3. On the other hand, it increases the structural strength of the heating cavity 3 and prevents the top wall 121 from deforming due to heat, pressure and other factors generated during the installation or use of the lighting component 70. In addition, it improves the heat dissipation effect of the oven lamp 71, ensures the stability of the oven lamp 71 during long-term operation, and further improves the overall performance of the lighting component 70.

[0084] like Figure 2 As shown, the furnace body 1 also includes an outer shell 11, a first air inlet structure 101 is provided on the outer shell 11, an air outlet 1251 is provided on the front plate 125 of the inner liner 12, a first heat dissipation air duct and a second heat dissipation air duct are provided between the outer shell 11 and the inner liner 12, and the lighting component 70 is located in the second heat dissipation air duct.

[0085] As a preferred example of this application, such as Figure 9 and Figure 10 As shown, the outer shell 11 includes a rear plate 111. A fan assembly 31 and a partition 16 are disposed between the rear plate 111 and the inner liner 12. One side of the partition 16 is connected to the rear wall 124 of the inner liner 12, and the other side of the partition 16 is connected to the rear plate 111. The partition 16 cooperates with the fan assembly 31 to divide the rear area of ​​the heating chamber 3 into a first chamber 30 and a second chamber 40. The fan assembly 31 is disposed on the upper part of the first chamber 30. The fan assembly 31 is used to drive outside air through the first air inlet structure 101 to sequentially enter the first chamber 30 and the second chamber 40 to form a first heat dissipation air duct.

[0086] This setup forces airflow from the first cavity 30 into the second cavity 40 through the partition 16, eliminating turbulence interference in traditional open air ducts and improving the heat dissipation efficiency of the first heat dissipation air duct. At the same time, the isolation design of the first cavity 30 ensures that the operating temperature of the motor of the fan assembly 31 is ≤45℃, significantly extending its service life. In addition, the partition 16 can effectively prevent the transmission of vibration of the fan assembly 31 and prevent abnormal noise caused by resonance.

[0087] As a preferred example of this application, such as Figure 9 As shown, the drawer-type microwave oven 100 also includes a magnetron 41, which is disposed at the outlet of the fan assembly 31. This arrangement facilitates heat dissipation from the magnetron 41 by the fan assembly 31.

[0088] As a preferred example of this application, such as Figure 2 and Figure 3 As shown, the air outlet 1251 is located on the bottom of the front panel 125 near the fan assembly 31. Figure 10 As shown, the airflow from the second cavity 40 forms a second heat dissipation duct between the air outlet 1251 and the air outlet.

[0089] This configuration allows air from the first heat dissipation duct to flow out from the top of the second cavity 40 and pass over the top of the heating cavity 3, before being discharged from the air outlet 1251 of the front panel 125, thereby achieving heat dissipation for the lighting assembly 70.

[0090] As a preferred example of this application, such as Figure 9 and Figure 10As shown, the outer casing 11 also includes a base plate 113, and the first air inlet structure 101 includes ventilation holes disposed on at least one of the rear plate 111 and / or the base plate 113. This arrangement gives the drawer-type microwave oven 100 a large air inlet area and low air inlet resistance, thereby further improving heat dissipation efficiency. Preferably, a support leg is provided below the base plate 113. This arrangement ensures that there is a gap between the base plate 113 and the bottom wall of the embedded space, thereby facilitating the entry of outside air.

[0091] Preferred, such as Figure 2 As shown, the outer casing 11 also includes a left side panel and a right side panel 114, and the first air intake structure 101 further includes ventilation holes disposed on the left side panel or the right side panel 114. This arrangement allows air to enter from the bottom, rear, and sides of the drawer-type microwave oven 100 simultaneously, avoiding the situation where individual ventilation holes are blocked, thus preventing effective heat dissipation and resulting in more stable heat dissipation.

[0092] like Figure 9 As shown, the outer casing 11 also includes a top plate 112.

[0093] As a preferred example of this application, the projected area of ​​the planar light-transmitting lampshade 73 on the top wall 121 is larger than that of the protrusion 1211. This design ensures that the planar light-transmitting lampshade 73 can completely cover the protrusion 1211 and its light-transmitting hole 1212, providing better protection and light transmission. At the same time, the larger projected area may also help to enhance the installation stability of the planar light-transmitting lampshade 73, making it more firmly fixed to the top wall 121.

[0094] As a preferred example of this application, such as Figure 7 As shown, a clearance hole 724 is provided on the light-collecting protective lamp cover 72 to allow the furnace lamp 71 to pass. This arrangement facilitates the installation of the furnace lamp 71.

[0095] As a preferred example of this application, such as Figure 7 As shown, the heat dissipation hole structure 723 includes a first heat dissipation hole 7231 and a second heat dissipation hole 7232, which are symmetrically arranged on the front and rear sides of the light-collecting protective lamp cover 72. This arrangement improves the heat dissipation uniformity and efficiency of the furnace lamp 71.

[0096] As a preferred example of this application, such as Figure 7 As shown, the heat dissipation hole structure 723 also includes a third heat dissipation hole 7233. This feature further improves the heat dissipation effect of the furnace lamp 71.

[0097] As a preferred example of this application, the furnace lamp 71 is detachably connected to the light-collecting protective lamp cover 72.

[0098] As a preferred example of this application, such as Figure 7 As shown, a first mounting hole 721 is provided on the light-collecting protective lamp cover 72, such as... Figure 6 As shown, a fourth mounting hole 711 is provided on the furnace lamp 71, and the first mounting hole 721 cooperates with the fourth mounting hole 711.

[0099] As a preferred example of this application, such as Figure 7 As shown, there are two first mounting holes 721, which are symmetrically arranged on both sides of the clearance hole 724. This arrangement improves the installation balance and strength of the furnace lamp 71.

[0100] As a preferred example of this application, such as Figures 4-5 As shown, the drawer-type microwave oven 100 also includes a microwave heating component 4, which is used to deliver microwaves to the heating cavity 3. The microwave heating component 4 is located at the center of the top wall 121. This design has several advantages: First, it allows microwaves to cover the food in the heating cavity 3 more evenly, improving the heating uniformity of the food; second, the structural layout is reasonable, placing the microwave heating component 4 on the top wall 121 does not occupy the space of the side wall or rear wall 124 of the inner liner 12, making the internal space of the heating cavity 3 more regular, which is conducive to the placement of food and the cooking process; third, the position of the top wall 121 is relatively open, which facilitates the installation and removal of the microwave heating component 4.

[0101] As a preferred example of this application, such as Figure 4 and Figure 10 As shown, the lighting component 70 is disposed on the front side of the top wall 121. Considering that users usually stand in front of the drawer-type microwave oven 100 when using it, placing the lighting component 70 on the front side of the top wall 121 can prevent the light from being blocked by the user's body or other objects, ensuring that the user can obtain good lighting effects from different angles, allowing the user to more clearly observe the color, doneness, and other conditions of the food, and making it easier to adjust cooking parameters in a timely manner.

[0102] As a preferred example of this application, the light-collecting protective lampshade 72 is detachably connected to the side-folding edge of the top wall 121.

[0103] As a preferred example of this application, such as Figures 6-8 As shown, a second mounting hole 722 is provided on the light-collecting protective lamp cover 72, such as... Figure 6 As shown, a third mounting hole 1213 is provided on the side folded edge of the top wall 121, and the second mounting hole 722 cooperates with the third mounting hole 1213.

[0104] As a preferred example of this application, such as Figure 7 and Figure 8 As shown, a mounting protrusion 726 is provided on the light-collecting protective lamp cover 72, and the second mounting hole 722 is provided on the mounting protrusion 726. This arrangement enhances the connection strength between the light-collecting protective lamp cover 72 and the side-folded edge of the top wall 121.

[0105] As a preferred example of this application, such as Figure 8 As shown, a mounting protrusion 725 is provided on the mounting protrusion 726, and the second mounting hole 722 is provided on the mounting protrusion 725. This arrangement further enhances the connection strength between the light-collecting protective lamp cover 72 and the side-folded edge of the top wall 121.

[0106] As a preferred example of this application, such as Figure 1 and Figure 2 As shown, the drawer-type microwave oven 100 also includes a drawer 2, which has a storage cavity 6 for storing food to be heated; the drawer 2 is slidably mounted on the oven body 1 for easy insertion and removal of food by the user.

[0107] Specifically, the drawer 2 includes a door body 21 and a support part 22, the support part 22 forms the storage cavity 6, and the door glass 211 is installed on the door body 21.

[0108] As for other related components of the drawer-type microwave oven 100, since the specific structure and assembly relationship of these components are existing technologies, they will not be described in detail here.

[0109] This embodiment proposes a drawer-type microwave oven 100, in which the central axis of the oven lamp 71 is arranged parallel to the top wall 121. A protrusion 1211 is provided on the top wall 121 of the inner liner 12, and a light-transmitting hole 1212 is provided on the protrusion 1211. A heat dissipation hole structure 723 is provided on the light-collecting protective lamp cover 72. On the one hand, it not only does not occupy the space of the heating cavity 3, but also increases the usable area of ​​the heating cavity 3. On the other hand, it increases the structural strength of the heating cavity 3 and prevents the top wall 121 from deforming due to heat, pressure and other factors generated during the installation or use of the lighting component 70. In addition, it improves the heat dissipation effect of the oven lamp 71, ensures the stability of the oven lamp 71 during long-term operation, and further improves the overall performance of the lighting component 70.

[0110] Example 2

[0111] In existing technology, the oven light 71 of a microwave oven is controlled solely based on the door status; the light automatically turns on when the door is open and automatically turns off when the door is closed. Although this control logic is simple, low-cost, and in line with the concept of energy conservation, it is limited to a single door status control method, resulting in poor control flexibility and failing to adequately meet the diverse usage needs of users.

[0112] To address the aforementioned technical problems, this embodiment proposes a control method for a drawer-type microwave oven. The drawer-type microwave oven 100 includes an oven body 1, a drawer 2, a motor, and a lighting assembly 70. The drawer 2 is connected to the oven body 1, and the motor drives the drawer 2 to move relative to the oven body 1 in a front-to-back direction. The lighting assembly 70 includes an oven lamp 71.

[0113] like Figures 12-13 As shown, the control method includes the following steps:

[0114] S1, Drawer-type microwave oven 100 is powered on;

[0115] S2. Control the oven light 71 according to the status of the drawer-type microwave oven 100 and the motor operation.

[0116] The control method for the drawer-type microwave oven described in this embodiment controls the oven light 71 based on the state of the drawer-type microwave oven 100 and the motor's operation. On the one hand, this greatly improves the convenience of use; the oven light 71 can be controlled to illuminate according to actual needs, allowing users to clearly see the food inside the drawer 2 even when it is not opened. On the other hand, it improves control flexibility; it is no longer limited to a single oven door state control method, but can flexibly adjust the on / off state of the oven light 71 according to different usage scenarios and operating conditions, better meeting the diverse usage needs of users and improving the user experience of the product.

[0117] In existing technologies, it is impossible to observe the food when cooking with the door closed, forcing the cooking process to be interrupted and affecting the results.

[0118] Specifically, step S2 includes the following steps:

[0119] S21. Determine whether the drawer-type microwave oven 100 is in working condition;

[0120] S22. If the drawer-type microwave oven 100 is in operation, the oven light 71 will be turned on.

[0121] S23. If the drawer-type microwave oven 100 is not in working condition, determine whether the MCU has received a motor action command.

[0122] S24. If the MCU does not receive a motor operation command, the furnace light 71 will be turned off.

[0123] Steps S21 to S24 are interconnected and work together. Step S21 determines whether the drawer-type microwave oven 100 is in working mode, facilitating the control of the oven light 71 based on this status. Step S22, when the drawer-type microwave oven 100 is in working mode, turns on the oven light 71. This perfectly solves the problem of traditional microwave ovens where food cannot be observed when the door is closed, allowing users to monitor the food's status at any time during cooking, thus improving controllability and safety. Step S23, if the drawer-type microwave oven 100 is not in working mode, determines whether the MCU has received a motor action command. This multi-layered judgment logic accurately determines the current state of the drawer-type microwave oven 100, distinguishing between standby mode and other non-working states that may require action, providing an accurate basis for subsequent control of the oven light 71. In step S24, when the drawer-type microwave oven 100 is not in operation and the MCU has not received a motor action command, it indicates that the drawer-type microwave oven 100 is in standby mode, and the oven light 71 is turned off. This design avoids the oven light 71 from being lit for a long time unnecessarily, effectively reducing energy consumption and conforming to the concept of energy conservation and environmental protection. It also reduces the operating cost of the equipment. In addition, turning off the oven light in standby mode will not produce excess light and can reduce interference to users, especially at night or in environments where users are sensitive to light. This creates a more comfortable and quiet operating environment for users and improves the user experience.

[0124] Specifically, step S2 also includes the following steps:

[0125] S25. If the MCU receives a motor action command, it determines whether the motor action direction is forward rotation to open the door or reverse rotation to close the door.

[0126] S26. If the door opens when the motor rotates forward, then enter the motor rotation door opening judgment mode;

[0127] S27. If the motor reverses to close the door, then enter the motor reverse closing judgment mode.

[0128] Steps S25 to S27 are interconnected and work together. By determining whether the motor's direction of motion is forward rotation to open the door or reverse rotation to close the door, and entering the corresponding judgment mode respectively, the furnace lamp 71 can be precisely controlled according to the different motion states of drawer 2. This clear division of labor mode enables the system resources to be allocated and utilized more rationally, improving the system's operating efficiency and stability.

[0129] Specifically, the door opening detection mode based on the forward rotation of the motor includes the following steps:

[0130] The door opens when the motor rotates forward.

[0131] Turn on the stove lamp 71.

[0132] In the forward rotation door opening judgment mode, the forward rotation of the motor indicates that the user wants to open drawer 2. At this time, the oven light 71 turns on. The oven light 71 turns on instantly after the user issues the command, with a faster response and no delay in lighting, which improves the user experience.

[0133] Specifically, the forward rotation door opening detection mode also includes the following steps:

[0134] Obtain the motor FG voltage v;

[0135] Determine if the motor FG voltage v > the preset stall voltage threshold V3;

[0136] If the motor FG voltage v > the preset stall voltage threshold V3, the MCU sends a motor stop command, and the motor stops.

[0137] In the forward rotation door opening judgment mode, when the motor is rotating forward to open the door, it indicates that the user wants to open drawer 2. If the motor FG voltage v is greater than the preset stall voltage threshold V3, a stop command can be issued at the moment the stall occurs, realizing active safety protection, preventing damage from spreading, and greatly improving the reliability, safety and user satisfaction of the product.

[0138] Specifically, the motor reverse door closing judgment mode includes the following steps:

[0139] The motor reverses to close the door;

[0140] Determine if the motor has stopped.

[0141] If the motor does not stop, the furnace light 71 will turn on.

[0142] In the motor reverse closing judgment mode, the motor reverses to close the door; if the motor does not stop, it indicates that the closing action is in progress, and the furnace light 71 turns on until the action is completed, achieving full illumination during the closing process and eliminating blind spots and safety hazards. It transforms a potentially existing safety and experience blind spot into a safe, reliable, and high-quality visual operation guidance process, which greatly enhances the product's safety, ease of use, and premium feel.

[0143] Specifically, the motor reverse door closing judgment mode also includes the following steps:

[0144] If the motor stops, obtain the motor FG voltage v;

[0145] Determine if the motor FG voltage v > the preset stall voltage threshold V3;

[0146] If the motor FG voltage v > the preset stall voltage threshold V3, the motor will stall and stop, and the furnace lamp 71 will turn on;

[0147] If the motor FG voltage v ≤ the preset stall voltage threshold V3, the motor will not stop due to stall, and the furnace lamp 71 will be turned off.

[0148] In the motor reverse door closing judgment mode, if the motor stops, the motor FG voltage v is obtained to determine whether the motor has stopped due to a stall. If the motor stops due to anti-pinch or other obstacles, the oven light 71 turns on as an abnormal warning, visually attracting the user's attention and informing them that the system is not in normal standby mode but has entered a protection state, requiring inspection. If the motor does not stop due to a stall, it indicates that drawer 2 has been closed normally without any abnormalities, the system enters standby mode, and the oven light 71 turns off to save energy.

[0149] Specifically, the forward rotation door opening detection mode also includes the following steps:

[0150] Obtain the motor FG voltage v;

[0151] Determine if the motor FG voltage v > the preset stall voltage threshold V3;

[0152] If the motor FG voltage v > the preset stall voltage threshold V3, the MCU sends a motor stop command, and the motor stops.

[0153] In the forward rotation door opening judgment mode, when the motor is rotating forward to open the door, it indicates that the user wants to open drawer 2. If the motor FG voltage v is greater than the preset stall voltage threshold V3, a stop command can be issued at the moment the stall occurs, realizing active safety protection, preventing damage from spreading, and greatly improving the reliability, safety and user satisfaction of the product.

[0154] Specifically, step S25 includes the following steps:

[0155] S251. If the MCU receives a motor operation command, obtain the motor FG voltage v;

[0156] S252. Determine whether the motor FG voltage v > the first preset voltage threshold V1;

[0157] S253. If the motor FG voltage v > the first preset voltage threshold V1, then the motor rotates forward to open the door;

[0158] S254. If the motor FG voltage v ≤ the first preset voltage threshold V1, then determine whether the motor FG voltage v > the second preset voltage threshold V2.

[0159] S255. If the motor FG voltage v > the second preset voltage threshold V2, then the motor reverses to close the door.

[0160] In step S25, steps S251 to S255 are interconnected and work together. Step S251 obtains the motor FG voltage v to facilitate subsequent determination of whether the motor rotates forward to open the door or reverses to close the door. Step S252 facilitates determination of whether the motor rotates forward to open the door. Step S253 indicates that the motor FG voltage v > the first preset voltage threshold V1, indicating that the motor rotates forward to open the door. Then, step S254 facilitates determination of whether the motor rotates reverse to close the door. Step S255 indicates that the motor FG voltage v > the second preset voltage threshold V2, indicating that the motor rotates reverse to close the door.

[0161] It should be noted that FG voltage refers to the voltage of the frequency generator.

[0162] The second preset voltage threshold V2 is less than the first preset voltage threshold V1.

[0163] Specifically, step S24 includes the following steps:

[0164] S241. If the MCU does not receive a motor operation command, then obtain the motor's FG voltage v;

[0165] S242. Determine whether the motor's FG voltage v > the preset motor stop threshold V4;

[0166] S243. If the FG voltage v of the motor is less than or equal to the preset motor stop threshold V4, then the furnace lamp 71 is turned off.

[0167] S244. If the motor's FG voltage v > the preset motor stop threshold V4, then obtain the motor's FG voltage v1 after the first preset time t1.

[0168] S245. Determine whether the motor FG voltage v > the fifth preset voltage threshold V5 after the first preset time t1.

[0169] S246. If the motor FG voltage v > the fifth preset voltage threshold V5 after the first preset time t1, the MCU sends a forward rotation command, the motor rotates forward to open the door, and enters the motor forward rotation door opening judgment mode.

[0170] S247. If the motor FG voltage v ≤ the fifth preset voltage threshold V5 after the first preset time t1, the MCU sends a reverse command, the motor reverses to close the door, and enters the motor reverse door closing judgment mode.

[0171] Steps S241 to S247 are interconnected and work together to resynchronize the electrical system state with the user's manual operation, prevent state confusion, perceive the real state of the physical world, realize intelligent assistance for manual operation, enable the product to understand the user's physical actions, better meet the user's diverse usage needs, and improve the user experience of the product.

[0172] Steps S241 and S242 facilitate determining whether the user has manually opened or closed the door. In step S243, if the motor's FG voltage v is less than or equal to the preset motor stop threshold V4, it indicates that the user has not manually opened or closed the door, and the furnace lamp 71 is turned off to save energy. In step S244, if the MCU does not receive a motor action command and the motor's FG voltage v is greater than the preset motor stop threshold V4, it indicates that the user has manually opened or closed the door. In step S245, the motor's FG voltage v is detected again after the first preset time t1 to prevent malfunctions caused by accidental vibration or slight touch. If the voltage can still be detected after time t1, it indicates that it is intentional operation rather than accidental touch, which greatly improves the system's anti-interference capability and judgment accuracy. Step S246 facilitates determining whether the user manually opens or closes the door.

[0173] Furthermore, in this embodiment, the first preset voltage threshold V1, the second preset voltage threshold V2, the preset stall voltage threshold V3, the preset motor stop threshold V4, the fifth preset voltage threshold V5, and the first preset time t1 are all preset values, and are not specifically limited here.

[0174] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A control method of a drawer-type microwave oven, characterized by, The drawer-type microwave oven (100) comprises an oven body (1), a drawer (2), a motor and a lighting assembly (70), the drawer (2) is connected with the oven body (1), the motor is used for driving the drawer (2) to move along the front-back direction relative to the oven body (1), the lighting assembly (70) comprises an oven lamp (71), The control method comprises the following steps: S1, the drawer-type microwave oven (100) is powered on; S2, according to the state of the drawer-type microwave oven (100) and the motor action, the oven lamp (71) is controlled.

2. The control method of a drawer-type microwave oven according to claim 1, characterized by, Step S2 comprises the following steps: S21, judging whether the drawer-type microwave oven (100) is in a working state; S22, if the drawer-type microwave oven (100) is in the working state, the oven lamp (71) is turned on; S23, if the drawer-type microwave oven (100) is not in the working state, judging whether the MCU receives the motor action instruction; S24, if the MCU does not receive the motor action instruction, the oven lamp (71) is turned off.

3. The control method of a drawer-type microwave oven according to claim 2, characterized by, Step S2 further comprises the following steps: S25, if the MCU receives the motor action instruction, judging whether the motor action direction is forward rotation to open the door or reverse rotation to close the door; S26, if the motor is forward rotation to open the door, entering the motor forward rotation to open the door judgment mode; S27, if the motor is reverse rotation to close the door, entering the motor reverse rotation to close the door judgment mode.

4. The control method of a drawer-type microwave oven according to claim 3, characterized by, The motor forward rotation to open the door judgment mode comprises the following steps: The motor is forward rotation to open the door; The oven lamp (71) is turned on.

5. The control method of a drawer-type microwave oven according to claim 3, characterized by, The motor reverse rotation to close the door judgment mode comprises the following steps: The motor is reverse rotation to close the door; Judging whether the motor is stopped; If the motor is not stopped, the oven lamp (71) is turned on.

6. The control method of a drawer-type microwave oven according to claim 5, characterized by, The motor reverse rotation to close the door judgment mode further comprises the following steps: If the motor is stopped, the FG voltage v of the motor is acquired; Judging whether the FG voltage v of the motor is greater than a preset locked-rotor voltage threshold V3; If the FG voltage v of the motor is greater than the preset locked-rotor voltage threshold V3, the motor is locked-rotor stopped, and the oven lamp (71) is turned on; If the FG voltage v of the motor is less than or equal to the preset locked-rotor voltage threshold V3, the motor is not locked-rotor stopped, and the oven lamp (71) is turned off.

7. The control method of a drawer-type microwave oven according to claim 3, characterized by, Step S25 comprises the following steps: S251, if the MCU receives the motor action instruction, the FG voltage v of the motor is acquired; S252, judging whether the FG voltage v of the motor is greater than a first preset voltage threshold V1; S253, if the FG voltage v of the motor is greater than the first preset voltage threshold V1, the motor is forward rotation to open the door; S254, if the FG voltage v of the motor is less than or equal to the first preset voltage threshold V1, judging whether the FG voltage v of the motor is greater than a second preset voltage threshold V2; S255, if the FG voltage v of the motor is greater than the second preset voltage threshold V2, the motor is reverse rotation to close the door.

8. The control method of a drawer-type microwave oven according to claim 3, characterized by, Step S24 comprises the following steps: S241, if the MCU does not receive the motor action instruction, the FG voltage v of the motor is acquired; S242, judging whether the FG voltage v of the motor is greater than a preset motor stop threshold V4; S243, if the FG voltage v of the motor is less than or equal to the preset motor stop threshold V4, the oven lamp (71) is turned off; S244, if the FG voltage v of the motor is greater than the preset motor stop threshold V4, the FG voltage v1 of the motor after a first preset time t1 is acquired; S245, judging whether the motor FG voltage v > fifth preset voltage threshold V5 after the first preset time t1; S246, if the motor FG voltage v > fifth preset voltage threshold V5 after the first preset time t1, the MCU sends a positive rotation instruction, the motor rotates positively to open the door, and enters a motor positive rotation door opening judgment mode; S247, if the motor FG voltage v ≤ fifth preset voltage threshold V5 after the first preset time t1, the MCU sends a reverse rotation instruction, the motor rotates reversely to close the door, and enters a motor reverse rotation door closing judgment mode.

9. The control method of a drawer-type microwave oven according to claim 3, characterized by, The motor positive rotation door opening further comprises the following steps: acquiring the motor FG voltage v; judging whether the motor FG voltage v > preset stall voltage threshold V3; if the motor FG voltage v > preset stall voltage threshold V3, the MCU sends a motor stop instruction, and the motor stops.

10. A drawer-type microwave oven, characterized by comprising: The drawer-type microwave oven uses the control method of the drawer-type microwave oven according to any one of claims 1-9.

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