Cavity electric appliance no-load detection equipment

Abstract

The utility model relates to the technical field of cavity electric appliance no-load detection, and discloses cavity electric appliance no-load detection equipment, which comprises a top plate arranged on the inner top wall of a microwave oven cavity, and is characterized in that a controller and a buzzer are arranged in the top plate and are in signal connection, and the controller is connected with the buzzer through a signal. A mounting groove is formed in the middle of the top plate, a ToF sensor is mounted at the position, located in the mounting groove, of the top plate, buckling grooves are formed in the positions, located on the two sides of the ToF sensor, of the top plate, and a mounting assembly is arranged in the mounting groove; values detected by the ToF sensor can help to evaluate or identify no load, that is, no container and / or food in the cavity can be judged and identified, the buzzer is controlled by the controller to warn a user of misoperation, and meanwhile, the type of the container and the type of the food can be identified through the values detected by the ToF sensor. Therefore, the service life of equipment is prevented from being shortened due to no-load operation.

Description

Technical Field

[0001] The utility model relates to the technical field of cavity electrical appliance no-load detection, in particular to cavity electrical appliance no-load detection equipment. Background Art

[0002] A microwave oven is a modern cooking appliance that uses microwaves to heat food. It is mainly composed of a power supply, a magnetron, a control circuit and an internal cooking cavity. Its principle is to use the food to absorb microwave energy in the microwave field and heat itself.

[0003] Microwave ovens currently on the market are unable to remind users whether food is placed in the cavity when in use. For certain heat sources, such as magnetrons or metal tubes, running these heat sources under no-load conditions will reduce the service life of the heat source, which in turn requires maintenance and increases user costs. Therefore, further improvements can be made. Utility Model Content

[0004] In order to solve the above-mentioned problems, the utility model provides the following technical solutions: a cavity electrical appliance no-load detection device, comprising a top plate installed on the top wall of the microwave oven cavity, characterized in that a controller and a buzzer are arranged inside the top plate, and the controller and the buzzer are signal-connected, a mounting groove is opened in the middle of the top plate, a ToF sensor is installed inside the mounting groove of the top plate, a circular groove is opened on the side walls around the mounting groove, buckle grooves are opened on both sides of the ToF sensor of the top plate, and a mounting component is arranged inside the mounting groove.

[0005] As an optimization, the ToF sensor is located directly above the food placed in the cavity. The ToF sensor and controller signal are connected. The value given by the ToF sensor detection can help evaluate or identify that there is no load. It can determine and identify that there is no container and / or no food in the cavity, and the controller will control the buzzer to warn the user of improper operation. At the same time, the type of container and food can be identified through the value given by the ToF sensor detection.

[0006] As an optimization, the installation assembly includes a circular frame embedded in the circular groove, and limiting cylinders are fixedly installed at the four inner corners of the circular frame. Empty chambers are opened inside the four sides of the circular frame, and a pressure plate is slidably inserted inside the empty chamber. A guide hole is opened inside the pressure plate, and a guide rod is fixedly installed inside the empty chamber corresponding to the guide hole, and a compression spring is sleeved on the outer side of the guide rod.

[0007] As an optimization, the guide rod is slidably inserted into the guide hole, and the guide rod can limit the pressure plate so that the pressure plate can maintain horizontal movement.

[0008] As an optimization, the compression spring is fixedly installed between the pressure plate and the inner wall of the empty chamber. When the ToF sensor is pressed and installed into the installation groove, the pressure plate will be squeezed, thereby compressing the compression spring. The elastic force of the compression spring itself will cause the pressure plate to be reversely squeezed on the surface of the installation groove, thereby clamping and positioning the installation groove, thereby improving its installation stability.

[0009] As an optimization, limit rods are fixedly installed at the four corners of the ToF sensor, and the limit rods are arranged corresponding to the limit cylinders. The corresponding limit rods are inserted into the inside of the limit cylinders. By inserting the four sets of limit rods into the corresponding limit cylinders, the ToF sensor can be positioned so that the ToF sensor is in the center position and will not easily shift its position, thereby improving the accuracy of no-load detection.

[0010] As an optimization, a card slot is opened on the outer side of the middle part of the ToF sensor, and the pressure plate is stuck in the card slot under the action of the rebound force of the compression spring. The stability of the installation is further improved by the card connection between the pressure plate and the card slot. When disassembling, you only need to put your fingers on both sides of the ToF sensor in the card slot to easily take out the ToF sensor. The installation and disassembly are convenient and quick.

[0011] The beneficial effects of the utility model are:

[0012] 1. The cavity electrical appliance no-load detection device can help evaluate or identify no load through the value given by the ToF sensor detection, that is, it can determine and identify that there is no container and / or no food in the cavity, and will control the buzzer through the controller to warn the user of misoperation. At the same time, the type of container and food can also be identified through the value given by the ToF sensor detection, thereby avoiding the reduction of equipment service life due to no-load operation and extending the life cycle of key components.

[0013] 2. The cavity electrical appliance no-load detection device presses the ToF sensor into the installation slot, which will squeeze the pressure plate, thereby compressing the compression spring. The compression spring's rebound force will cause the pressure plate to be stuck into the slot outside the installation slot, thereby positioning the ToF sensor. When disassembling, you only need to hold the two sides of the ToF sensor in the buckle slot, and then pull the ToF sensor outward to pull it out, thereby achieving the effect of convenient and quick installation and disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the detection signal ratio of the container of the utility model;

[0016] Figure 3This is a schematic diagram of the detection signal ratio of food in a transparent container of the utility model;

[0017] Figure 4 It is a partial cutaway schematic diagram of the structure of the utility model;

[0018] Figure 5 This is a schematic diagram of the installation structure of the utility model;

[0019] Figure 6 This is a schematic diagram of the extrusion positioning structure of the utility model.

[0020] In the figure: 1. Top plate; 2. Mounting slot; 3. ToF sensor; 4. Reciprocating slot; 5. Buckle slot; 6. Mounting assembly; 7. Reciprocating frame; 8. Limiting cylinder; 9. Empty chamber; 10. Pressure plate; 11. Guide hole; 12. Guide rod; 13. Compression spring; 14. Limiting rod; 15. Slot. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1 A cavity electrical appliance no-load detection device comprises a top plate 1 installed on the top wall of a microwave oven cavity, characterized in that: a controller and a buzzer are arranged inside the top plate 1, and the controller and the buzzer are connected by signal, a mounting groove 2 is opened in the middle of the top plate 1, a ToF sensor 3 is installed inside the top plate 1 located in the mounting groove 2, the ToF sensor 3 is located just above the food placed in the cavity, the ToF sensor 3 is connected by signal to the controller, a circular groove 4 is opened on the side walls around the mounting groove 2, buckle grooves 5 are opened on both sides of the top plate 1 located on the ToF sensor 3, and a mounting component 6 is arranged inside the mounting groove 2.

[0023] See also Figure 2-3 The value given by the ToF sensor 3 can help evaluate or identify that there is no load, that is, it can determine that there is no container and / or no food in the cavity, and the controller will control the buzzer to warn the user of incorrect operation. At the same time, the value given by the ToF sensor 3 can also be used to identify the type of container and the type of food.

[0024] See also Figure 4-6The mounting assembly 6 includes a return frame 7 embedded in the return groove 4, and the four inner corners of the return frame 7 are fixedly installed with limiting cylinders 8. The four sides of the return frame 7 are provided with empty chambers 9, and a pressing plate 10 is slidably inserted in the empty chamber 9. A guide hole 11 is provided in the pressing plate 10. A guide rod 12 is fixedly installed in the empty chamber 9 corresponding to the guide hole 11. The guide rod 12 is slidably inserted in the guide hole 11. The guide rod 12 will limit the pressing plate 10, so that the pressing plate 10 can keep moving in the horizontal direction;

[0025] See also Figure 4-6 A compression spring 13 is sleeved on the outer side of the guide rod 12, and the compression spring 13 is fixedly installed between the pressure plate 10 and the inner wall of the chamber 9. When the ToF sensor 3 is pressed and installed into the installation groove 2, the pressure plate 10 will be squeezed, so the compression spring 13 will be compressed. The elastic force of the compression spring 13 itself will make the pressure plate 10 reversely squeezed on the surface of the installation groove 2, thereby clamping and positioning the installation groove 2, thereby improving its installation stability.

[0026] See also Figure 5 , the limiting rods 14 are fixedly installed at the four corners of the ToF sensor 3, and the limiting rods 14 are arranged corresponding to the limiting cylinders 8, and the corresponding limiting rods 14 are inserted into the inside of the limiting cylinders 8. By correspondingly inserting the four groups of limiting rods 14 into the corresponding limiting cylinders 8, the ToF sensor 3 can be positioned, so that the ToF sensor 3 is in the center position and will not be easily offset, thereby improving the accuracy of no-load detection;

[0027] See also Figure 5 A card slot 15 is provided on the outer middle part of the ToF sensor 3, and the pressure plate 10 is clamped in the card slot 15 under the action of the rebound force of the compression spring 13. The card slot 15 is clamped together to further improve the stability of the installation. When disassembling, you only need to buckle your fingers on both sides of the ToF sensor 3 in the buckle slot 5 to easily take out the ToF sensor 3, and the installation and disassembly are convenient and quick.

[0028] When using, refer to Figure 1-6 First, align the limiting rod 14 and insert it into the limiting cylinder 8, and then the ToF sensor 3 will be pressed into the installation slot 2. At this time, the outer side of the ToF sensor 3 will squeeze the pressure plate 10, so that the pressure plate 10 slides along the guide rod 12 to the inside of the empty chamber 9, and then the compression spring 13 will be compressed until the ToF sensor 3 completely enters the installation slot 2. At this time, the compression spring 13 will drive the pressure plate 10 to be stuck into the slot 15 outside the installation slot 2 under the action of the rebound force of the compression spring 13, so it will play a role in positioning the ToF sensor 3. When it needs to be disassembled, it is only necessary to buckle the two sides of the ToF sensor 3 in the buckle slot 5, and then pull the ToF sensor 3 outward to pull it out. The installation and disassembly are relatively convenient and quick;

[0029] After that, the ToF sensor 3 placed in the middle of the top plate 1 can be aimed at the food area for detection, and then the empty furnace, 10' white round plate, 6' white round bowl and 8' transparent square bowl are detected in turn. The detection data is as follows: Figure 2 As shown, a transparent square bowl 8' is selected to test the reaction of the ToF sensor 3 to containers of different food types, and the data obtained is as follows Figure 3 As shown, it can be seen that the signal output ratio responds significantly differently to containers of different food types, so the ToF sensor 3 has the ability to distinguish the empty state of the cavity, and can also distinguish different types of food. When the detected signal output ratio value belongs to the cavity, the controller will control the buzzer to warn the user of misoperation.

[0030] To sum up, the cavity electrical appliance no-load detection device can help evaluate or identify no load through the value given by the ToF sensor 3, that is, it can determine and identify that there is no container and / or no food in the cavity, and will control the buzzer through the controller to warn the user of incorrect operation. At the same time, the type of container and the type of food can also be identified through the value given by the ToF sensor 3, thereby avoiding the reduction of equipment service life due to no-load operation and extending the life cycle of key components.

[0031] By pressing the ToF sensor 3 into the installation slot 2, the pressure plate 10 will be squeezed, so the compression spring 13 will be compressed, and then the pressure plate 10 will be stuck into the slot 15 outside the installation slot 2 under the action of the rebound force of the compression spring 13, thereby positioning the ToF sensor 3. When disassembling, you only need to hold the two sides of the ToF sensor 3 in the buckle slot 5, and then pull the ToF sensor 3 outward to pull it out, thereby achieving the effect of convenient and quick installation and disassembly.

[0032] In the description of the present invention, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", and "fix" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] The standard parts used in the utility model can all be purchased from the market, and the special-shaped parts can all be customized according to the description and the drawings.

[0034] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. A cavity electrical appliance no-load detection device, comprising a top plate (1) mounted on the top wall of a microwave oven cavity, characterized in that: A controller and a buzzer are arranged inside the top plate (1), and the controller and the buzzer are signal-connected. A mounting groove (2) is provided in the middle of the top plate (1), a ToF sensor (3) is installed inside the mounting groove (2) of the top plate (1), a circular groove (4) is provided on the side walls around the mounting groove (2), buckle grooves (5) are provided on both sides of the ToF sensor (3), and a mounting component (6) is provided inside the mounting groove (2).

2. The cavity electrical appliance no-load detection device according to claim 1, characterized in that: The ToF sensor (3) is located directly above the food placed in the cavity, and the ToF sensor (3) is connected to the controller signal.

3. The cavity electrical appliance no-load detection device according to claim 1, characterized in that: The mounting assembly (6) comprises a return frame (7) embedded in the return groove (4), and the four inner corners of the return frame (7) are fixedly mounted with limit cylinders (8). The four sides of the return frame (7) are provided with empty chambers (9), and a pressure plate (10) is slidably inserted into the empty chamber (9). A guide hole (11) is provided in the pressure plate (10), and a guide rod (12) is fixedly mounted in the empty chamber (9) corresponding to the guide hole (11), and a compression spring (13) is sleeved on the outer side of the guide rod (12).

4. The cavity electrical appliance no-load detection device according to claim 3, characterized in that: The guide rod (12) is slidably inserted into the guide hole (11).

5. The cavity electrical appliance no-load detection device according to claim 3, characterized in that: The compression spring (13) is fixedly mounted between the pressure plate (10) and the inner wall of the cavity (9).

6. The cavity electrical appliance no-load detection device according to claim 3, characterized in that: Limit rods (14) are fixedly mounted at the four corners of the ToF sensor (3), and the limit rods (14) are arranged corresponding to the limit cylinders (8), and the corresponding limit rods (14) are inserted into the interior of the limit cylinders (8).

7. The cavity electrical appliance no-load detection device according to claim 3, characterized in that: A slot (15) is provided on the outer side of the middle portion of the ToF sensor (3), and the pressure plate (10) is clamped inside the slot (15) under the action of the rebound force of the compression spring (13).

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