Heating control circuit and cooking utensil

Abstract

The utility model relates to the technical field of cooking utensils, in particular to a heating control circuit and a cooking utensil, and the heating control circuit comprises a weighing unit which is used for weighing; the main control unit is in communication connection with the weighing unit; the temperature measuring unit is in communication connection with the main control unit; the temperature measuring unit is used for measuring the surface temperature of food; the heating unit is in communication connection with the main control unit; the actual working parameters of the heating unit are in one-to-one correspondence with the weight of the food and the surface temperature of the food; the actual working parameters at least comprise heating temperature and heating time. According to the embodiment of the utility model, the actual working parameters of the heating unit can be in one-to-one correspondence with the weight and the surface temperature of the food, so that the heating unit can heat according to a preset heating program during heating, the heating time is matched with the food, and a user does not need to set the heating duration and the heating power of the heating unit by himself / herself; therefore, the use experience of the user is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cooking utensils, in particular to a heating control circuit and a cooking utensil. Background Art

[0002] Cooking appliances on the market today, such as microwave ovens, all use the traditional button heating method. After putting the food in, the user sets the heating time and firepower according to the size of the food. This can easily result in the heating time not matching the food, causing the heating time to be too long, causing the food to burn, or the heating time to be insufficient, resulting in the heating time not being in place and requiring secondary heating.

[0003] Therefore, the user cannot set the most suitable heating time for the food, which makes the user experience worse. Utility Model Content

[0004] In view of this, the utility model provides a heating control circuit and a cooking appliance to solve the problem that the user cannot set the most suitable heating time for the food.

[0005] In a first aspect, the utility model provides a heating control circuit, the heating control circuit comprising:

[0006] A weighing unit, used for weighing;

[0007] A main control unit, connected to the weighing unit for communication;

[0008] A temperature measuring unit is connected to the main control unit for communication; the temperature measuring unit measures the surface temperature of the food;

[0009] A heating unit is communicatively connected with the main control unit; the actual working parameters of the heating unit correspond to the weight of the food and the surface temperature of the food one by one; the actual working parameters at least include the heating temperature and the heating time.

[0010] Beneficial effect: The embodiment of the utility model can correspond the actual working parameters of the heating unit with the weight of the food and the surface temperature of the food by setting a weighing unit and a temperature measuring unit, so that the heating unit can heat according to a predetermined heating program when heating, so that the heating time is most suitable for the food. There is no need for the user to set the heating time and heating power of the heating unit by himself, thereby improving the user experience.

[0011] In an optional embodiment, the weighing unit comprises:

[0012] A weighing sensor for weighing;

[0013] The weighing identification chip is communicatively connected with the weighing sensor and the main control unit; the weighing identification chip has a receiving state of receiving weighing information from the weighing sensor and a transmitting state of transmitting the weighing information to the main control unit.

[0014] Beneficial effects: The embodiment of the utility model is provided with a weighing sensor. When in use, the dinner plate can be weighed first. At this time, the main control unit will automatically save the weight of the dinner plate, and when the same dinner plate is used subsequently, there is no need to weigh the weight of the dinner plate again. If the user changes the dinner plate, the main control unit can control the weighing identification chip to clear the data of the dinner plate, or re-file the weight of the dinner plate, and then the user can use the corresponding dinner plate weight data. Then, the user can place food on the dinner plate and heat it as a whole. At this time, the weighing identification chip will automatically obtain the weight of the food. Then the main control unit can control the heating unit to heat it by itself, which improves the user experience.

[0015] In an optional implementation, the main control unit includes:

[0016] The main control chip is communicatively connected with the weighing unit, the temperature measuring unit and the heating unit at the same time.

[0017] Beneficial effect: The embodiment of the utility model detects the temperature of the food surface through the temperature measuring unit, and then performs deep algorithms and algorithm compensation on the acquired food surface temperature and food weight, so as to automatically obtain the required working mode and working time of the heating unit, thereby improving the user experience.

[0018] In an optional implementation, the main control unit further includes:

[0019] An operation screen is connected to the main control chip for communication; the operation screen is used to modify the actual working parameters of the heating unit and display the actual working parameters.

[0020] Beneficial effects: The embodiment of the utility model provides an operation screen, through which the user can view the actual working parameters of the heating unit, thereby understanding the working condition of the heating unit. When the user needs to modify the actual working parameters of the heating unit according to his own situation, the user can directly adjust the heating unit through the operation screen, thereby meeting the user's independent adjustment needs. Furthermore, the main control chip can also display other information on the operation screen, so that the user can understand the entire heating situation, so that the user can control the actual cooking information of the food.

[0021] In an optional implementation, the actual working parameters include at least a working mode and a working time.

[0022] In an optional implementation, the temperature measuring unit is an infrared temperature sensor.

[0023] In an optional implementation, the heating control circuit further includes:

[0024] The power supply supplies power to the weighing unit, the main control unit and the temperature measuring unit at the same time.

[0025] In an optional embodiment, a power supply switch is provided in the weighing unit, a control end of the power supply switch is connected to the signal output end of the weighing identification chip, a first connection end of the power supply switch is connected to the power supply, and a second connection end of the power supply switch is connected to the weighing sensor.

[0026] Beneficial effect: The embodiment of the utility model sets a power switch. When the weighing identification chip detects that there is no dinner plate or other things placed on the weighing sensor, the weighing identification chip can also be disconnected by the power switch, so that the power supply stops supplying power to the weighing sensor, thereby reducing the working time of the weighing sensor and extending the service life of the weighing sensor. On this basis, a certain amount of electric energy can be saved.

[0027] In a second aspect, the utility model further provides a cooking utensil, which comprises: a heating control circuit as described in any one of the above embodiments.

[0028] In an optional embodiment, the cooking appliance is at least a microwave oven. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the related technologies, the drawings required for use in the specific implementation methods or the related technical descriptions will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0030] Figure 1 It is an overall schematic diagram of a heating control circuit according to an embodiment of the utility model.

[0031] Description of reference numerals:

[0032] 1. Weighing unit; 11. Weighing sensor; 12. Weighing identification chip;

[0033] 2. Main control unit; 21. Main control chip; 22. Operation screen;

[0034] 3. Temperature measuring unit; 4. Heating unit;

[0035] VCC, power supply; C1, first filter capacitor; C2, second filter capacitor; C3, third filter capacitor; C4, fourth filter capacitor; C5, fifth filter capacitor; R1, first resistor; R2, second resistor; R3, third resistor. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0037] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0038] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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, or it can be the internal communication of two components, it can be a wireless connection, or it can be a wired connection. For ordinary workers in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0039] Cooking appliances on the market today, such as microwave ovens, all use the traditional button heating method. After putting in the food, the user sets the heating time and firepower according to the size of the food. This can easily cause the heating time to not match the food, resulting in too long heating time, causing the food to burn, or insufficient heating time, causing the heating time to be inadequate and requiring secondary heating, etc. Therefore, users cannot set the most suitable heating time for the food, which deteriorates the user experience.

[0040] In view of this, the utility model provides a heating control circuit and a cooking appliance to solve the problem that the user cannot set the most suitable heating time for the food.

[0041] Combine the following Figure 1 , describing an embodiment of the utility model.

[0042] According to an embodiment of the present utility model, on one hand, a heating control circuit is provided. The heating control circuit includes a weighing unit 1 , a main control unit 2 , a temperature measuring unit 3 and a heating unit 4 .

[0043] Specifically, in the embodiment of the utility model, the weighing unit 1 is used to weigh the object to be weighed, and the object to be weighed may be a dinner plate, or may be the whole after the food is placed on the dinner plate. In actual use, the user may directly put the food on the weighing unit 1 for weighing, or may put the dinner plate and the food on the dinner plate as a whole on the weighing unit 1 for weighing, and the actual weight of the food may be obtained.

[0044] Of course, this embodiment is only an example of the weighing method of the weighing unit 1, but it is not limited to this. Those skilled in the art can make changes according to actual conditions as long as the same technical effect can be achieved.

[0045] Further, in the embodiment of the present utility model, the main control unit 2 is connected to the weighing unit 1 in communication, and the temperature measuring unit 3 is connected to the main control unit 2 in communication, and the temperature measuring unit 3 is used to measure the surface temperature of the food. In the embodiment of the present utility model, the temperature measuring unit 3 can be a resistive temperature sensor, a thermocouple sensor, a semiconductor temperature sensor, etc. Of course, this embodiment is only an example of the type of the temperature measuring unit 3, but it is not limited to this. Those skilled in the art can change it according to the actual situation, as long as the same technical effect can be achieved.

[0046] Furthermore, in the embodiment of the utility model, the heating unit 4 is connected to the main control unit 2 in communication, and the actual working parameters of the heating unit 4 correspond to the weight of the food and the surface temperature of the food, and the actual working parameters at least include the heating temperature and the heating time. For example, a relationship comparison table between the actual working parameters of the heating unit 4, the weight of the food, and the surface temperature of the food can be stored in the main control unit 2 in advance, and in the actual heating process, the main control unit 2 can directly select the actual working parameters of the heating unit 4 according to the weight of the food and the surface temperature of the food.

[0047] With such a configuration, the embodiment of the utility model can make the actual working parameters of the heating unit 4 correspond one-to-one with the weight of the food and the surface temperature of the food by setting the weighing unit 1 and the temperature measuring unit 3, so that the heating unit 4 can heat according to a predetermined heating program when heating, so that the heating time is most suitable for the food. There is no need for the user to set the heating time and heating power of the heating unit 4 by himself, thereby improving the user experience.

[0048] Further, in an optional embodiment, the weighing unit 1 includes a weighing sensor 11 and a weighing identification chip 12. Specifically, in the embodiment of the utility model, the weighing sensor 11 is used for weighing. The weighing identification chip 12 is communicatively connected with the weighing sensor 11 and the main control unit 2. The weighing identification chip 12 has a receiving state of receiving weighing information from the weighing sensor 11, and a transmitting state of transmitting the weighing information to the main control unit 2.

[0049] The weighing sensor 11 is provided with a positive signal output terminal and a negative signal output terminal. The positive signal output terminal A1 and the negative signal output terminal A2 output gravity change signals to the weighing identification chip 12 to determine the gram weight. Figure 1 As shown, the weighing identification chip 12 is provided with a first filter capacitor C1 and a second filter capacitor C2. The first resistor R1 and the second resistor R2 are used for voltage division to provide a reference power input to the weighing identification chip 12, and the third filter capacitor C3 is used for weight reference level filtering. The third resistor R3 and the fourth filter capacitor C4 transmit the data of the weighing sensor 11 to the weighing identification chip 12 for reading.

[0050] With such a configuration, the embodiment of the utility model can first weigh the dinner plate by setting a weighing sensor 11 when in use. At this time, the main control unit 2 will automatically save the weight of the dinner plate, and when the same dinner plate is used later, there is no need to weigh the weight of the dinner plate again. If the user changes the dinner plate, the main control unit 2 can control the weighing identification chip 12 to clear the data of the dinner plate, or re-file the weight of the dinner plate, and then the user can use the corresponding dinner plate weight data. Then, the user can place food on the dinner plate and heat it as a whole. At this time, the weighing identification chip 12 will automatically obtain the weight of the food. Then, the main control unit 2 can automatically control the heating unit 4 to heat, which improves the user experience.

[0051] For example, when the heating control circuit is applied to a microwave oven, before the user takes the food and puts it into the microwave oven for heating, the user needs to put the microwave oven plate into the microwave oven flat plate, which has a built-in weighing sensor 11, so that the gram weight of the plate can be obtained. The weighing identification chip 12 receives the gram weight information of the plate transmitted by the weighing sensor 11, and then transmits the gram weight information of the plate to the main control unit 2 for storage, and files the plate. After the record is stored once, there is no need to repeatedly record the gram weight of the same plate. If the type of plate is changed later, the gram weight information of the new plate can be obtained again. In this way, in the subsequent use process, the gram weight information of the corresponding type of plate can be directly selected to reduce the number of weighing times for the user.

[0052] At this time, the user puts the food into the dinner plate, puts it into the microwave oven, closes the oven door, reads the total weight of the food and the dinner plate, and the main control unit 2 calculates and subtracts the previously stored weight of the dinner plate to obtain the actual weight of the food.

[0053] Furthermore, in an optional embodiment, the main control unit 2 includes a main control chip 21, and the main control chip 21 is simultaneously connected to the weighing unit 1, the temperature measuring unit 3, and the heating unit 4 for communication. Figure 1 As shown, a fifth filter capacitor C5 is provided in the main control chip 21 .

[0054] With such a configuration, the embodiment of the utility model detects the temperature of the food surface through the temperature measuring unit 3, and then through deep algorithm and algorithm compensation on the acquired food surface temperature and food weight, it can automatically obtain the required working mode and working time of the heating unit 4, thereby improving the user experience.

[0055] For example, when the food is frozen and the surface temperature of the food is -15°C, the combination mode will be used for cooking, first thawing and then power cooking. When the food is at room temperature, since the temperature measuring unit 3 can obtain the ambient temperature before heating, it is determined that the temperature change is within the ambient range, and the power cooking mode is directly entered.

[0056] Furthermore, in an optional embodiment, the main control unit 2 also includes an operation screen 22, which is connected to the main control chip 21 for communication, and the operation screen 22 is used to modify and display the actual working parameters of the heating unit 4. For example, the working mode of the heating unit 4, the working time of the heating unit 4, the temperature of the food, and the weight of the food can be displayed. The user can also modify the working parameters, for example, the working mode and working time of the heating unit 4. When the user puts food in, closes the oven door, and clicks the heating button on the operation screen 22, the main control unit 2 recognizes that the oven door is closed, and the main control unit 2 transmits a signal to the heating unit 4, so that it executes the corresponding working mode and working time on the operation screen 22 to accurately cook the food.

[0057] In this way, the embodiment of the utility model is provided with an operation screen 22, and the user can view the actual working parameters of the heating unit 4 through the operation screen 22, so as to understand the working condition of the heating unit 4. When the user needs to modify the actual working parameters of the heating unit 4 according to his own situation, the user can directly adjust the heating unit 4 through the operation screen 22, so as to meet the user's self-adjustment needs. Furthermore, the main control chip 21 can also display other information on the operation screen 22, so that the user can understand the entire heating situation, so that the user can control the actual cooking information of the food.

[0058] Furthermore, in an optional embodiment, the actual working parameters at least include working mode and working time. The working mode may be, for example, a combined heating mode, that is, first thawing at low temperature and then heating at high temperature, or a medium-heat heating mode.

[0059] Furthermore, in an optional embodiment, the temperature measuring unit 3 is an infrared temperature sensor. Of course, this embodiment is only an example of the type of the temperature measuring unit 3, but it is not limited thereto, and those skilled in the art can make changes according to actual conditions as long as the same technical effect can be achieved.

[0060] Furthermore, in an optional implementation, the heating control circuit further includes a power supply VCC, and the power supply VCC supplies power to the weighing unit 1 , the main control unit 2 , and the temperature measuring unit 3 simultaneously.

[0061] Furthermore, in an optional embodiment, a power supply switch is provided in the weighing unit 1, the control end of the power supply switch is connected to the signal output end of the weighing identification chip 12, the first connection end of the power supply switch is connected to the power supply VCC, and the second connection end of the power supply switch is connected to the weighing sensor 11.

[0062] In this way, the embodiment of the utility model sets a power switch. When the weighing identification chip 12 detects that there is no dinner plate or other things placed on the weighing sensor 11, the weighing identification chip 12 can also be disconnected by the power switch, so that the power supply VCC stops supplying power to the weighing sensor 11, thereby reducing the working time of the weighing sensor 11 and extending the service life of the weighing sensor 11. On this basis, a certain amount of electric energy can be saved.

[0063] For example, the power switch can be a switch tube such as a triode or a MOS tube, and the on and off of the power switch can be directly controlled by the weighing identification chip 12 .

[0064] In a second aspect, the utility model further provides a cooking utensil, which comprises: a heating control circuit as described in any one of the above embodiments.

[0065] Further, in an optional embodiment, the cooking utensil is at least a microwave oven.

[0066] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A heating control circuit, characterized in that: include: A weighing unit (1), used for weighing; A main control unit (2) is communicatively connected with the weighing unit (1); A temperature measuring unit (3) is connected to the main control unit (2) for communication; the temperature measuring unit (3) measures the surface temperature of food; A heating unit (4) is communicatively connected to the main control unit (2); the actual working parameters of the heating unit (4) correspond one-to-one with the weight of the food and the surface temperature of the food; the actual working parameters at least include the heating temperature and the heating time.

2. The heating control circuit according to claim 1, characterized in that: The weighing unit (1) comprises: A weighing sensor (11), used for weighing; A weighing identification chip (12) is communicatively connected with the weighing sensor (11) and the main control unit (2); the weighing identification chip (12) has a receiving state for receiving weighing information from the weighing sensor (11) and a transmitting state for transmitting the weighing information to the main control unit (2).

3. The heating control circuit according to claim 1 or 2, characterized in that: The main control unit (2) comprises: The main control chip (21) is communicatively connected with the weighing unit (1), the temperature measuring unit (3), and the heating unit (4) at the same time.

4. The heating control circuit according to claim 3, characterized in that: The main control unit (2) also includes: An operating screen (22) is communicatively connected to the main control chip (21); the operating screen (22) is used to modify the actual working parameters of the heating unit (4) and to display the actual working parameters.

5. The heating control circuit according to claim 4, characterized in that: The actual working parameters at least include working mode and working time.

6. The heating control circuit according to claim 1 or 2, characterized in that: The temperature measuring unit (3) is an infrared temperature sensor.

7. The heating control circuit according to claim 1 or 2, characterized in that: The heating control circuit also includes: A power supply (VCC) supplies power to the weighing unit (1), the main control unit (2), and the temperature measuring unit (3) at the same time.

8. The heating control circuit according to claim 7, characterized in that: The weighing unit (1) is provided with a power switch, the control end of the power switch is connected to the signal output end of the weighing identification chip (12), the first connection end of the power switch is connected to the power supply (VCC), and the second connection end of the power switch is connected to the weighing sensor (11).

9. A cooking utensil, characterized in that: include: A heating control circuit as claimed in any one of claims 1 to 8.

10. The cooking appliance according to claim 9, characterized in that The cooking appliance is at least a microwave oven.

Images