A motor-driven suspended electric baking pan and a control method thereof

Abstract

The present invention is a motor-driven suspended electric baking pan and a control method thereof, belonging to the field of household appliances. Aiming at the problem that the existing electric baking pan has poor effect in improving the fluffiness and taste of food, the present invention is a motor-driven suspended electric baking pan and a method, comprising an upper cover with an upper baking tray and a base with a lower baking tray, the upper cover is rotatably connected to the base, a driving device is provided on the upper cover, the driving device is connected to the upper baking tray to drive the upper baking tray to move up and down along the upper cover, a controller for controlling the opening and closing of the driving device is provided on the driving device, the controller is connected to the signal of the sudden jump switch group, when the food is heated and matured and expands, the controller controls the opening and closing of the driving device, drives the upper baking tray to move to adjust the position of the upper baking tray, so that the heating space between the upper baking tray and the lower baking tray is adapted to the space after the food is fluffiness. The present invention drives the upper baking tray to move by the electric control device and the mechanical structure together, and its sensitivity is higher, the fluffiness of the food is better, and the taste is better.

Description

Technical Field

[0001] The invention belongs to the field of household appliances, and in particular relates to a motor-driven suspended electric baking pan and a control method thereof. Background Art

[0002] The existing electric baking pan is composed of an upper cover and a base with a heat source installed. The upper cover and the base are connected by a rotating shaft. When the upper cover and the base are closed, a space for accommodating and heating food is formed. In order to ensure the heating effect and facilitate the rapid maturation of food, the upper cover and the base will be close, and the distance between the upper cover and the bottom cover cannot be adjusted, especially the distance between the upper baking tray and the lower baking tray cannot be adjusted. If the volume of food expands after being heated, such a structure will limit the space for the food to expand, which will have a greater impact on the fluffiness of the food, and thus affect the taste of the food. In the existing electric baking pan, elastic devices are provided between the upper baking tray and the upper pan body and between the lower baking tray and the lower pan body, so that the electric baking pan can automatically adjust as the food expands during use, but this structure has a problem, that is, the elasticity of the elastic device will offset part of the expansion force of the food when it is fluffy, and the sensitivity of the entire adjustment structure is insufficient, so the food still cannot be freely fluffy, and the effect of improving the taste is poor. Summary of the invention

[0003] In view of the problem that the existing electric baking pans are poor in improving the fluffiness and taste of food, the present invention provides a motor-driven suspended electric baking pan, which enables the position of the upper baking plate to be adjusted according to the fluffiness of food through the cooperation of an electric control device and a mechanical device. The adjustment sensitivity is high, the effect on the fluffiness of food is small, and the taste can be effectively improved.

[0004] The technical solution adopted by the present invention is as follows: a motor-driven suspended electric baking pan, comprising an upper cover with an upper baking tray and a base with a lower baking tray, the upper cover being rotatably connected to the base, when the upper cover is covered on the base, the upper baking tray and the lower baking tray enclose a heating space, the upper cover is provided with a driving device, the driving device is connected to the upper baking tray and is used to drive the upper baking tray to move up and down along the upper cover, the driving device is provided with a controller for controlling the opening and closing of the driving device, a sudden jump switch group is linked to the upper cover (1), the controller is connected to the sudden jump switch group signal, when the food is heated and matured and expands, the upper cover is lifted up and produces a micro-motion, and the sudden jump switch group signal changes accordingly, and after sensing the signal, the controller controls the opening and closing of the driving device to drive the upper baking tray to move to adjust the position of the upper baking tray, so that the heating space between the upper baking tray and the lower baking tray is adapted to the space after the food is fluffed.

[0005] The present invention drives the upper baking tray to move by the electric control device and the mechanical structure. Compared with the prior art that controls the movement of the baking tray only by the elastic device of the mechanical structure, the present invention has higher sensitivity, more precise adjustment, better fluffiness of food and better taste. The specific process is that the upper cover is lifted up to produce micro-movement, and the sudden jump switch group signal changes accordingly. The controller first controls the driving device to turn on and drives the upper baking tray to move upward. When the sudden jump switch group signal changes again, the controller controls the driving device to stop.

[0006] Furthermore, the driving device includes a motor providing driving force, a nut driven by the motor, and a screw rod used in conjunction with the nut. The outer edge of the nut is connected to the driving shaft of the motor through a belt. One end of the screw rod is passed through the upper cover, and the other end is connected to the top of the upper baking tray. When the motor drives the nut to rotate, the screw rod drives the upper baking tray to move up and down along the upper cover. The nut is restrained by the belt and cannot move up and down along the upper cover. The screw rod and the nut cooperate through threads. When the nut rotates, the screw rod moves up and down relative to the nut, and the upper baking tray can move along the upper cover. The position of the screw rod is preferably in the middle of the upper cover, so that the upper baking tray is evenly stressed when moving and is not easy to deviate from the position.

[0007] Furthermore, the sudden jump switch group is arranged on the base, and a grilling pan arm is arranged on the upper cover, one end of the grilling pan arm is bent downward to cooperate with the sudden jump switch group, so that the sudden jump switch group can be linked with the upper cover, and the other end of the grilling pan arm is bent downward and connected to the base through a rotating shaft. The grilling pan arm and the upper cover are independent structures. Compared with the integral structure, the split structure is more flexible in layout and more convenient to disassemble and assemble.

[0008] Furthermore, a detachable shell is provided on the grill pan arm, and the driving device is accommodated between the shell and the grill pan arm. The shell is easy to assemble and can also play a good dust and water blocking role, and is conducive to motor wiring.

[0009] Furthermore, the snap switch group is located in a concave cavity on the base, and the snap switch group includes two snap switches with different elasticity, each snap switch can be deformed in two directions, upward and downward, and when the grilling pan arm is used in conjunction with the snap switch group, the two snap switches with different elasticity independently send signals according to the position of the grilling pan arm. The snap switches have different elasticities and different sensitivities, and send signals respectively when the grilling pan arm is in different positions.

[0010] Furthermore, the upper baking tray is provided with an annular flange and a first flange located outside the annular flange, and the lower baking tray includes an annular side wall, a bottom wall, and a second flange located on the top of the annular side wall and extending outward, the annular side wall and the bottom wall form a accommodating space for accommodating food, and the annular flange can be accommodated in the accommodating space of the lower baking tray. When the first flange is tightly attached to the second flange, the upper baking tray is at the lowermost end of the upper cover.

[0011] Furthermore, heating elements are provided on the top wall of the upper baking tray and the bottom wall of the lower baking tray. The heating elements are controlled to be turned on and off by control elements located on the base. They can produce heating effect when powered on. The top wall and annular convex edge of the upper baking tray and the annular side wall and bottom wall of the lower baking tray form the heating space.

[0012] The control method of the motor-driven suspended electric baking pan comprises the following steps:

[0013] Step 1, Preparation:

[0014] Step 1.1, placing the food to be baked: placing the food to be baked in the lower baking tray, at this time the signal of the sudden jump switch group is "1 and 0", closing the upper cover, at this time the upper baking tray and the lower baking tray are surrounded to form a heating space, and the signal of the sudden jump switch group triggered by one end of the baking tray arm located on the upper cover becomes "0 and 1" accordingly;

[0015] Step 1.2, select mode: select a cooking mode according to the thickness of the food to be baked. When the thickness of the food to be baked is greater than 5 mm, select mode 1 and execute step 2.1; when the thickness of the food to be baked is less than or equal to 5 mm, select mode 2 and execute step 2.2;

[0016] Step 2, Adjustment:

[0017] Step 2.1, after the controller obtains the "0 and 1" signal, the driving device starts to work, driving the upper baking tray to move downward until the first flange of the upper baking tray touches the second flange of the lower baking tray. At this time, the upper baking tray cannot move further. The controller senses this signal, stops the driving device and reverses, so that the upper baking tray moves upward until the signal of the sudden jump switch group changes to 0 and 0 for the first time, and the driving device stops driving; at this time, it is considered that the upper baking tray is in contact with the food to be baked;

[0018] Step 2.2, after the controller obtains the "0 and 1" signals, the driving device starts to work, driving the upper baking tray to move downward until the first flange of the upper baking tray collides with the second flange of the lower baking tray. At this time, the upper baking tray cannot move further. The controller senses this signal and stops the driving device. At this time, it is considered that the upper baking tray is in contact with the food to be baked.

[0019] Step 3, turn on the heating switch, and the upper baking tray and the lower baking tray begin to heat;

[0020] Step 4: When the volume of the baked object increases due to the heat, the upper cover is lifted up, the baking tray arm is also lifted up, the signal of the sudden jump switch group changes to "1 and 0", and the driving device drives the upper baking tray to move up. When the signal of the sudden jump switch group changes to "0 and 0" again, the driving device stops driving;

[0021] Step 5: When the volume of the baked object continues to increase, repeat step 4;

[0022] Step 6, return: after reaching the set cooking time, open the upper cover, the signal of the sudden jump switch group changes to "1 and 0", and after the controller obtains this signal, it starts the driving device and starts the upper baking tray to move up until the upper baking tray is located at the top of the upper cover, and the driving device stops driving;

[0023] The order of step 2 and step 3 can be swapped.

[0024] Furthermore, the kick switch group includes two kick switches with different elasticity, each kick switch can be deformed in two directions, upward and downward, and the signal generated when each kick switch is deformed can be captured by the controller.

[0025] Furthermore, the driving device includes a motor located on the upper cover and controlled to open and close by the controller, as well as a nut and a screw used in conjunction with the motor. The driving shaft of the motor is connected to the outer edge of the nut through a belt to drive the nut to rotate. One end of the screw is passed through the upper cover, and the other end is connected to the top of the upper baking tray. When the motor drives the nut to rotate, the screw drives the upper baking tray to move up and down along the upper cover. When the nut is located at the lower end of the screw, the upper baking tray is located at the top of the upper cover.

[0026] The beneficial effects of the present invention are as follows: compared with the prior art in which the movement of the baking tray is controlled only by the elastic device of the mechanical structure, the present invention drives the upper baking tray to move by jointly driving the electric control device and the mechanical structure, and has higher sensitivity and more precise adjustment, and the food has better fluffiness and taste; the adopted control method combines the signal change of the sudden jump switch group to adjust the position of the upper baking tray, and has high sensitivity and fast adjustment speed. The upper baking tray is always in contact with the baked food without suppressing the baked food, thereby ensuring the baking effect and the fluffiness of the baked food. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the overall structure of the motor-driven suspended electric baking pan;

[0028] Figure 2 This is a schematic diagram of the structure when the upper cover is opened (excluding the outer shell);

[0029] Figure 3 This is a schematic diagram of the side section structure of the motor-driven suspended electric baking pan;

[0030] In the figure: 1-upper cover; 11-upper baking tray; 111-annular ridge; 112-first flange; 113-top wall; 2-base; 21-lower baking tray; 211-second flange; 212-annular side wall; 213-bottom wall; 22-concave cavity; 3-sudden switch; 4-motor; 5-nut; 6-screw; 7-belt; 8-baking tray arm; 81-housing; 82-rotating shaft; 9-heating element; 10-knob. DETAILED DESCRIPTION

[0031] The following is an explanation and description of the technical solutions of the embodiments of the present invention in conjunction with the accompanying drawings of the present invention, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the present invention.

[0032] The motor-driven suspended electric baking pan of this embodiment is as follows Figures 1 to 3 As shown, it includes an upper cover 1 with an upper baking tray 11 and a base 2 with a lower baking tray 21. The upper cover 1 is rotatably connected to the base 2. When the upper cover 1 is covered on the base 2, the upper baking tray 11 and the lower baking tray 21 enclose a heating space. The upper cover 1 is provided with a driving device, and the driving device is connected to the upper baking tray 11, and is used to drive the upper baking tray 11 to move up and down along the upper cover 1. The driving device is provided with a controller for controlling the opening and closing of the driving device. A sudden jump switch group is linked to the upper cover 1, and the controller is connected with the sudden jump switch group signal. When the food is heated and matured and expands, the upper cover 1 is lifted up and produces a micromotion, and the sudden jump switch group signal changes accordingly. After sensing the signal, the controller controls the opening and closing of the driving device to drive the upper baking tray 11 to move to adjust the position of the upper baking tray 11, so that the heating space between the upper baking tray 11 and the lower baking tray 21 is adapted to the space after the food is fluffy.

[0033] The present invention drives the upper baking tray 11 to move by the electric control device and the mechanical structure. Compared with the prior art method of controlling the movement of the baking tray only by the elastic device of the mechanical structure, the present invention has higher sensitivity, more precise adjustment, better fluffiness of food and better taste. The specific process is that the upper cover 1 is lifted up and produces micro-movement, and the sudden jump switch group signal changes accordingly. The controller first controls the driving device to turn on and drives the upper baking tray 11 to move upward. When the sudden jump switch group signal changes again, the controller controls the driving device to stop.

[0034] The driving device includes a motor 4 providing driving force, a nut 5 driven by the motor 4, and a screw 6 used in conjunction with the nut 5. The outer edge of the nut 5 is connected to the driving shaft of the motor 4 through a belt 7. One end of the screw 6 is passed through the upper cover 1, and the other end is connected to the top of the upper baking tray 11. When the motor 4 drives the nut 5 to rotate, the screw 6 drives the upper baking tray 11 to move up and down along the upper cover 1. The nut 5 is bound by the belt 7 and cannot move up and down along the upper cover 1. The screw 6 and the nut 5 are matched by threads. When the nut 5 rotates, the screw 6 moves up and down relative to the nut 5, and the upper baking tray 11 can move along the upper cover 1. The position of the screw 6 is preferably the middle part of the upper cover 1, so that the upper baking tray 11 is evenly stressed when moving and is not easy to deviate from the position.

[0035] The sudden jump switch group is arranged on the base 2, and the grilling pan arm 8 is arranged on the upper cover 1. One end of the grilling pan arm 8 is bent downward to cooperate with the sudden jump switch group, and the other end of the grilling pan arm 8 is bent downward and connected to the base 2 through the rotating shaft 82. The grilling pan arm 8 and the upper cover 1 are independent structures. Compared with the integral structure, the split structure is more flexible in layout and more convenient to disassemble and assemble.

[0036] The grill arm 8 is provided with a detachable shell 81, and the driving device is accommodated between the shell 81 and the grill arm 8. The shell 81 is easy to assemble and can also play a good dust and water blocking role, and is conducive to the wiring of the motor 4.

[0037] The snap switch group is located in the concave cavity 22 on the base 2, and includes two snap switches 3 with different elasticity, each snap switch 3 can be deformed in two directions, upward and downward, and when the grilling plate arm 8 is used in conjunction with the two snap switches 3, the two snap switches 3 with different elasticity send signals separately according to the position of the grilling plate arm 8. The snap switches 3 have different elasticity and different sensitivities, and send signals separately when the grilling plate arm 8 is in different positions.

[0038] The upper baking tray 11 is provided with an annular flange 111 and a first flange 112 located outside the annular flange 111. The lower baking tray 21 includes an annular side wall 212, a bottom wall 213 and a second flange 211 located at the top of the annular side wall 212 and extending outward. The annular side wall 212 and the bottom wall 213 form a receiving space for receiving food. The annular flange 111 can be received in the receiving space of the lower baking tray 21. When the first flange 112 is tightly attached to the second flange 211, the upper baking tray 11 is at the lowermost end of the upper cover 1.

[0039] A heating element 9 is provided on the top wall 113 of the upper baking tray 11 and the bottom wall 213 of the lower baking tray 21. In this embodiment, the heating element is an electric heating plate. The heating element 9 is controlled to be turned on and off by a control element located on the base 2. It can generate a heating effect when powered on. The top wall 113 of the upper baking tray 11, the annular convex edge 111 and the annular side wall 212 and the bottom wall 213 of the lower baking tray 21 form the heating space.

[0040] The control method of the motor 4 driving the suspended electric baking pan comprises the following steps:

[0041] Step 1, Preparation:

[0042] Step 1.1, placing the food to be baked: placing the food to be baked in the lower baking tray 21, at this time, the signals of the two sudden jump switches 3 are "1 and 0", closing the upper cover 1, at this time, the upper baking tray 11 and the lower baking tray 21 are surrounded to form a heating space, and one end of the baking tray arm 8 located at the upper cover 1 triggers the signals of the two sudden jump switches 3 to become "0 and 1" respectively;

[0043] Step 1.2, select mode: select a cooking mode according to the thickness of the food to be baked. Select the cooking mode by turning the knob 10. When the thickness of the food to be baked is greater than 5 mm, select mode 1 and execute step 2.1. When the thickness of the food to be baked is less than or equal to 5 mm, select mode 2 and execute step 2.2.

[0044] Step 2, adjustment: the driving device includes a motor 4 located on the upper cover 1 and controlled to open and close by the controller, and a nut 5 and a screw 6 used in conjunction with the motor 4. The driving shaft of the motor 4 is connected to the outer edge of the nut 5 through a belt 7 to drive the nut 5 to rotate. One end of the screw 6 is passed through the upper cover 1, and the other end is connected to the top of the upper baking tray 11. When the motor 4 drives the nut 5 to rotate, the screw 6 drives the upper baking tray 11 to move up and down along the upper cover 1.

[0045] Step 2.1, after the controller obtains the "0 and 1" signal, the motor 4 starts to work, driving the upper baking tray 11 to move downward until the first flange 112 of the upper baking tray 11 and the second flange 211 of the lower baking tray 21 collide with each other. At this time, the upper baking tray 11 cannot move further. The controller senses this signal, stops driving the motor 4 and reverses, so that the upper baking tray 11 moves upward until the signals of the two sudden jump switches 3 correspond to "0 and 0" for the first time, and the motor 4 stops driving. At this time, it is considered that the upper baking tray 11 is in contact with the food to be baked.

[0046] Step 2.2, after the controller obtains the "0 and 1" signals, the motor 4 starts to work, driving the upper baking tray 11 to move downward until the first flange 112 of the upper baking tray 11 and the second flange 211 of the lower baking tray 21 collide with each other. At this time, the upper baking tray 11 cannot move further. The controller senses this signal and stops the motor 4 from driving. At this time, it is considered that the upper baking tray 11 is in contact with the food to be baked.

[0047] Step 3, turn on the heating switch, and the upper baking tray 11 and the lower baking tray 21 begin to be heated;

[0048] Step 4, when the volume of the baked object increases due to the heat, the upper cover 1 is lifted up, the baking tray arm 8 is also lifted up, the signals of the two sudden jump switches 3 become "1 and 0", and the driving device drives the upper baking tray 11 to move up. When the signals of the two sudden jump switches 3 become "0 and 0" again, the driving device stops driving;

[0049] Step 5: When the volume of the baked object continues to increase, repeat step 4;

[0050] Step 6, return: after the set cooking time is reached, the upper cover 1 is opened, and the signals of the two sudden jump switches 3 become "1 and 0". After the controller obtains this signal, it starts the driving device and starts the upper baking tray 11 to move up until the upper baking tray 11 is located at the top of the upper cover 1, and the driving device stops driving;

[0051] The order of step 2 and step 3 can be swapped.

[0052] Each of the kick switches 3 can be deformed in two directions, upward and downward. The signal generated when each of the kick switches 3 is deformed can be captured by the controller.

[0053] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that the present invention includes but is not limited to the contents described in the drawings and the above specific embodiments. Any modification that does not deviate from the functional and structural principles of the present invention will be included in the scope of the claims.

Claims

1. A control method for a motor-driven suspended electric baking pan, characterized in that: The steps include: Step 1, Preparation: Step 1.1, placing food to be baked: placing food to be baked in the lower baking tray (21), at which time the signal of the sudden jump switch group is "1 and 0", closing the upper cover (1), at which time the upper baking tray (11) and the lower baking tray (21) are surrounded to form a heating space, and one end of the baking tray arm (8) located on the upper cover (1) triggers the sudden jump switch group, so that the signal of the sudden jump switch group changes to "0 and 1" correspondingly; the sudden jump switch group is located in the concave cavity (22) on the base, and the sudden jump switch group includes two sudden jump switches (3) with different elasticity. When the baking tray arm (8) and the two sudden jump switches (3) are used in conjunction, the two sudden jump switches (3) with different elasticity send signals separately according to the position of the baking tray arm (8); Step 1.2, select mode: select a cooking mode according to the thickness of the food to be baked. When the thickness of the food to be baked is greater than 5 mm, select mode 1 and execute step 2.1; when the thickness of the food to be baked is less than or equal to 5 mm, select mode 2 and execute step 2.2; Step 2, Adjustment: Step 2.1, after the controller obtains the "0 and 1" signal, the driving device starts to work, driving the upper baking tray (11) to move downward until the first flange (112) of the upper baking tray (11) and the second flange (211) of the lower baking tray (21) collide, at which time the upper baking tray (11) cannot move further, and the controller senses this signal, causing the driving device to stop driving and reverse, so that the upper baking tray (11) moves upward until the signal of the sudden jump switch group changes to "0 and 0" for the first time, at which time the driving device stops driving; Step 2.2, after the controller receives the "0 and 1" signals, the driving device starts to work, driving the upper baking tray (11) to move downward until the first flange (112) of the upper baking tray (11) and the second flange (211) of the lower baking tray (21) collide with each other. At this time, the upper baking tray (11) cannot move further, and the controller senses this signal and stops the driving device; Step 3, turning on the heating switch, and the upper baking tray (11) and the lower baking tray (21) begin to be heated; Step 4, when the volume of the baked object increases due to the heat, the upper cover (1) is lifted up, the baking tray arm (8) is also lifted up, the signal of the sudden jump switch group changes to "1 and 0", and the driving device drives the upper baking tray (11) to move upward. When the signal of the sudden jump switch group changes to "0 and 0" again, the driving device stops driving; Step 5: When the volume of the baked object continues to increase, repeat step 4; Step 6, return: after the set cooking time is reached, the upper cover (1) is opened, and the signal of the sudden jump switch group changes to "1 and 0". After the controller receives this signal, it starts the driving device and starts the upper baking tray (11) to move upward until the upper baking tray (11) is located on the top of the upper cover (1), and the driving device stops driving; wherein, the order of steps 2 and 3 can be interchanged.

2. The control method of the motor-driven suspended electric baking pan according to claim 1, characterized in that: Each of the sudden jump switches (3) can be deformed in two directions, upward and downward, and the signal generated when each of the sudden jump switches (3) is deformed can be captured by the controller.

3. The control method of the motor-driven suspended electric baking pan according to claim 2, characterized in that: The driving device comprises a motor (4) located on the upper cover (1) and controlled to open and close by a controller, and a nut (5) and a screw (6) used in conjunction therewith. The driving shaft of the motor (4) is connected to the outer edge of the nut (5) via a belt (7) to drive the nut (5) to rotate. One end of the screw (6) passes through the upper cover (1), and the other end is connected to the top of the upper baking tray (11). When the motor (4) drives the nut (5) to rotate, the screw (6) drives the upper baking tray (11) to move up and down along the upper cover (1). When the nut (5) is located at the lowermost end of the screw (6), the upper baking tray (11) is located at the top of the upper cover (1).

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