Ohm heating device and ohm heating control method
By designing a parallel circuit and an independently controlled ohmic heating device, the problem of uneven heating of foods of different shapes is solved, achieving uniform heating and high-quality food heating effect, and is suitable for ohmic heating control of various food shapes.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-24
- Publication Date
- 2026-03-24
AI Technical Summary
Existing ohmic heating devices suffer from uneven heating when heating foods of different shapes simultaneously, affecting food quality and user experience.
Design an ohmic heating device comprising a first circuit, a second circuit, and a third circuit connected in parallel, for heating liquids, solid-liquid mixtures, and solid foods, respectively. The on/off state of each circuit is controlled by an independent switch, and a conductive ball and a spherical heating cavity are combined to ensure uniform heating.
It achieves uniform heating of foods in different shapes, improves user satisfaction and food quality, has a wide range of applications, and can accurately control heating parameters according to the shape and weight of the food.
Smart Images
Figure CN121728613A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of food heating technology, specifically to an ohmic heating device and an ohmic heating control method. Background Technology
[0002] The principle of ohmic heating is to use the food to be heated as a conductor in a circuit, utilizing the heating effect of resistance to generate heat from within the food, without heating lag. Due to its ease of operation, lack of pollution, and rapid heating, ohmic heating has attracted widespread attention from researchers. When using ohmic heating, the food being heated needs to contain a certain amount of conductive medium; different amounts of conductive medium result in different heating rates, thus the heating time differs for liquids and solids.
[0003] If a user needs to heat both solid and liquid foods simultaneously, or if the food contains large solid particles, the required heating times for these foods will differ. However, the heating time of an ohmic heating device is fixed. Therefore, when heating simultaneously, uneven heating of the solid and liquid foods or incomplete heating of solid particles can occur. Different types of food cannot be heated evenly, affecting food quality and user experience. Summary of the Invention
[0004] In view of this, the present invention provides an ohmic heating device and an ohmic heating control method to solve the problem of poor heating uniformity when heating foods of different forms simultaneously during ohmic heating.
[0005] In a first aspect, the present invention provides an ohmic heating device, comprising:
[0006] A first circuit, a second circuit, and a third circuit are connected in parallel; the first circuit is equipped with a first switch, the second circuit is equipped with a second switch, and the third circuit is equipped with a third switch.
[0007] The power supply is electrically connected to the first circuit, the second circuit, and the third circuit.
[0008] The first heating cavity is disposed in the first circuit and is suitable for heating liquid food;
[0009] The second heating chamber, located in the second circuit, is suitable for heating solid-liquid mixed foods;
[0010] The third heating chamber, located in the third circuit, is suitable for heating solid food;
[0011] The first heating cavity, the second heating cavity, and the third heating cavity can each form an ohmic heating circuit with the power supply, and their on / off states can be independently controlled by the first switch, the second switch, and the third switch.
[0012] Beneficial effects: The first, second, and third heating chambers, respectively, are set in the parallel first, second, and third circuits to heat liquid food, solid-liquid mixed food, and solid food. Since the first, second, and third circuits can be independently controlled by the first, second, and third switches, independent ohmic heating of various food forms can be achieved. At the same time, when heating different food forms, each form of food can be heated evenly, and there will be no problem of uneven heating caused by different forms, thus improving user satisfaction.
[0013] In one alternative embodiment, at least one of the first heating cavity, the second heating cavity, and the third heating cavity contains a conductive ball.
[0014] Beneficial effects: By placing a conductive ball inside the heating chamber, the food being heated can always be in an ohmic heating circuit, effectively improving the reliability of ohmic heating.
[0015] In one optional embodiment, the conductive ball is a conductive silicone ball.
[0016] Beneficial effects: The use of conductive silicone balls, made of silicone material, allows the conductive balls to deform to some extent with the food, increasing the contact area between the conductive balls and the food and further improving the reliability of conductivity.
[0017] In one optional embodiment, a plurality of conductive silicone balls are placed in the first heating cavity, the second heating cavity, and the third heating cavity.
[0018] Beneficial effects: Each heating chamber is equipped with several conductive silicone balls, which effectively improves the electrical connection reliability of the ohmic heating circuit.
[0019] In one optional embodiment, the first heating cavity, the second heating cavity, and the third heating cavity are all spherical.
[0020] Beneficial effects: By designing the heating chambers as spherical shapes, compared to heating chambers with edges, the contact area between the food and the heating chambers is larger, ensuring full contact between the food and the heating chambers and avoiding uneven heating caused by partial non-contact.
[0021] In one optional embodiment, the bottom sides of the first heating cavity, the second heating cavity, and the third heating cavity are all provided with supports.
[0022] Beneficial effects: The support set on the bottom side of the spherical heating cavity can provide effective support and ensure the reliable operation of the ohmic heating device.
[0023] Secondly, the present invention also provides an ohmic heating control method, applicable to any of the ohmic heating devices described above, the control method comprising:
[0024] To obtain the form of food;
[0025] If the food is in liquid form, it will prompt you to place it in the first heating chamber and control the power supply to connect to the first circuit.
[0026] If the food is in a solid-liquid mixture, it will prompt you to place it in the second heating chamber and control the power supply to the second circuit.
[0027] If the food is in solid form, it will prompt you to place it in the third heating chamber and control the power supply to the third circuit.
[0028] The on / off state of the first circuit, the second circuit, and the third circuit, as well as the heating parameters, can be controlled independently.
[0029] Beneficial effects: The device acquires the form of the food and prompts the user to place it into the corresponding heating cavity based on its specific form, controlling the activation of the corresponding circuit. Because the on / off state and heating parameters of the first, second, and third circuits can be controlled independently, the first heating cavity in the first circuit, the second heating cavity in the second circuit, and the third heating cavity in the third circuit can be individually controlled. Liquids, solid-liquid mixtures, and solid foods can all be individually controlled for heating time and parameters, avoiding the uneven heating that occurs when ohmic heating devices simultaneously heat multiple food forms. This ensures food heating quality and improves user satisfaction and experience. The independent control of the first, second, and third circuits allows for heating of one type of food or multiple types of food simultaneously, making it widely applicable.
[0030] In one optional implementation, the heating parameters include heating temperature and heating duration.
[0031] Beneficial effects: Heating temperature and heating time are the two most important control parameters in the food heating process. Different forms of food require different amounts of heat during reheating. Taking into account factors such as energy consumption and food taste, different forms of food also correspond to different heating times. By effectively controlling heating temperature and heating time, high-quality heating of different forms of food can be achieved.
[0032] In one optional implementation, the ohmic heating control method includes:
[0033] If the food to be heated includes both liquid and solid-liquid mixtures, then the first and second circuits are activated to prompt the user to place the liquid food into the first heating chamber and the solid-liquid mixture into the second heating chamber.
[0034] If the food to be heated includes both liquid and solid forms, the first and third circuits are activated to prompt the user to place the liquid food into the first heating chamber and the solid food into the third heating chamber.
[0035] If the food to be heated includes both a solid-liquid mixture and a solid form, the second and third circuits are activated to prompt the food in the solid-liquid mixture to be placed into the second heating chamber and the food in the solid form to be placed into the third heating chamber.
[0036] If the food to be heated includes liquid, solid-liquid mixture, and solid, then the first, second, and third circuits are activated to prompt the user to place the liquid food into the first heating chamber, the solid-liquid mixture into the second heating chamber, and the solid food into the third heating chamber.
[0037] Beneficial effects: The ohmic heating control method of the present invention can simultaneously heat multiple types of food. According to the shape of the food, it can be placed into different heating cavities. The three parallel circuits containing the first heating cavity, the second heating cavity, and the third heating cavity can be controlled separately to control the on / off state and the heating parameters of each heating cavity. Therefore, it can control different types of food separately, ensuring that different types of food in each heating cavity are heated evenly, thus improving the heating quality and the taste of the food.
[0038] In one optional implementation, after obtaining the form of the food, the process further includes:
[0039] Obtain the weight of the food and compare it with a preset weight range;
[0040] The ohmic heating device is controlled to operate according to the corresponding heating parameters based on the range in which the food weight falls.
[0041] Beneficial effects: Obtaining the weight of food allows for more targeted ohmic heating based on the food's weight range, enabling more precise determination of heating parameters and further improving heating quality.
[0042] In one alternative implementation, obtaining the form of the food includes obtaining the form of the food input by the user or identifying the form of the food.
[0043] Beneficial effects: When acquiring the shape of food, the shape of the food input by the user can be obtained, eliminating the judgment step and simplifying the control steps; by using sensors to identify the shape of food, the steps of manual selection and input are eliminated, making it more intelligent.
[0044] In one optional implementation, after obtaining the form of the food, the process further includes:
[0045] Determine whether a food is a liquid food;
[0046] If the food is liquid, then the first control circuit is activated.
[0047] Beneficial effects: First, it determines whether the food is liquid. If so, it directly controls the first circuit to be turned on, making it convenient to operate according to the heating parameters and heating time suitable for heating liquid food.
[0048] In one alternative implementation, if the food is non-liquid, then it is determined whether the food is solid.
[0049] If the food is solid, then the third circuit is activated.
[0050] Beneficial effects: If the food is not liquid, then determine whether the food is solid. If it is solid, directly control the third circuit to be turned on, so that it can work according to the heating parameters and heating time suitable for heating solid food.
[0051] In one alternative implementation, if the food is non-solid, the second circuit is turned on.
[0052] Beneficial effects: If it is neither liquid nor solid food, it is determined to be a solid-liquid mixture, and the second circuit is directly controlled to be turned on, so that it can work according to the heating parameters and heating time suitable for heating solid-liquid mixtures. Attached Figure Description
[0053] To more clearly illustrate the technical solutions in the specific embodiments or related technologies of the present invention, the drawings used in the description of the specific embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0054] Figure 1 This is a schematic diagram of the structure of an ohmic heating device according to an embodiment of the present invention;
[0055] Figure 2 for Figure 1 The circuit diagram of the ohmic heating device shown is shown.
[0056] Figure 3 This is a schematic flowchart of the first ohmic heating control method according to an embodiment of the present invention;
[0057] Figure 4 This is a schematic flowchart of the second ohmic heating control method according to an embodiment of the present invention;
[0058] Figure 5 This is a flowchart illustrating the third ohmic heating control method according to an embodiment of the present invention.
[0059] Figure 6 This is a schematic flowchart of the fourth ohmic heating control method according to an embodiment of the present invention;
[0060] Figure 7 This is a schematic flowchart of the fifth ohmic heating control method according to an embodiment of the present invention;
[0061] Figure 8 This is a schematic flowchart of the fifth ohmic heating control method according to an embodiment of the present invention;
[0062] Figure 9 This is a schematic diagram of the control panel of an ohmic heating device according to an embodiment of the present invention.
[0063] Explanation of reference numerals in the attached figures:
[0064] 101. First heating chamber;
[0065] 102. Second heating chamber;
[0066] 103. Third heating chamber;
[0067] 200. Electrode;
[0068] 300. Conductive sphere;
[0069] 400. Power supply;
[0070] 401, First circuit; 4011, First switch;
[0071] 402. Second circuit; 4021. Second switch;
[0072] 403, Third Circuit; 4031, Third Switch. Detailed Implementation
[0073] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0074] In the description of the invention, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0075] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.
[0076] The following is combined with Figures 1 to 9 The following describes embodiments of the present invention.
[0077] According to embodiments of the present invention, in one aspect, such as Figure 1 As shown, an ohmic heating device is provided, comprising:
[0078] A first circuit 401, a second circuit 402, and a third circuit 403 are connected in parallel; a first switch 4011 is provided in the first circuit 401, a second switch 4021 is provided in the second circuit 402, and a third switch 4031 is provided in the third circuit 403.
[0079] Power supply 400 is electrically connected to the first circuit 401, the second circuit 402 and the third circuit 403;
[0080] The first heating cavity 101 is disposed in the first circuit 401 and is suitable for heating liquid food;
[0081] The second heating cavity 102 is disposed in the second circuit 402 and is suitable for heating solid-liquid mixed food;
[0082] The third heating cavity 103 is disposed in the third circuit 403 and is suitable for heating solid food;
[0083] The first heating chamber 101, the second heating chamber 102, and the third heating chamber 103 can each form an ohmic heating circuit with the power supply 400, and their on / off states can be independently controlled by the first switch 4011, the second switch 4021, and the third switch 4031. (See [reference]) Figure 2 Circuit diagram.
[0084] The first heating chamber 101, the second heating chamber 102, and the third heating chamber 103, which are connected in parallel, are respectively provided to heat liquid food, solid-liquid mixed food, and solid food. Since the first circuit 401, the second circuit 402, and the third circuit 403 can be independently controlled by the first switch 4011, the second switch 4021, and the third switch 4031, independent ohmic heating of various types of food can be achieved. At the same time, when heating different types of food, each type of food can be heated evenly, and there will be no problem of uneven heating caused by different shapes, which improves user satisfaction.
[0085] In some embodiments, at least one of the first heating cavity 101, the second heating cavity 102, and the third heating cavity 103 has a conductive ball 300 built in it.
[0086] By placing a conductive ball 300 inside the heating cavity, the food being heated is always kept in the ohmic heating circuit, effectively improving the reliability of ohmic heating. Furthermore, the ball shape ensures that it remains at the bottom of the heating cavity under gravity, guaranteeing contact with the food for electrical conductivity.
[0087] In some embodiments, the conductive ball 300 is a conductive silicone ball.
[0088] Conductive silicone balls are used. The conductive silicone balls 300 have a certain degree of elasticity and can deform to a certain extent with the food, which increases the contact area between the conductive balls 300 and the food, and further improves the conductivity reliability.
[0089] In some embodiments, a plurality of conductive silicone balls are placed in the first heating cavity 101, the second heating cavity 102 and the third heating cavity 103.
[0090] Each heating chamber is equipped with several conductive silicone balls, which effectively improves the electrical connection reliability of the ohmic heating circuit.
[0091] In some embodiments, the first heating cavity 101, the second heating cavity 102, and the third heating cavity 103 are all spherical.
[0092] The heating chambers are all spherical, which provides a larger contact area between the food and the heating chamber compared to heating chambers with edges. This ensures full contact between the food and the heating chamber and avoids uneven heating caused by partial non-contact.
[0093] In some embodiments, supports are provided on the bottom sides of the first heating cavity 101, the second heating cavity 102, and the third heating cavity 103.
[0094] A support is installed on the bottom side of the spherical heating cavity to provide effective support and ensure the reliable operation of the ohmic heating device.
[0095] According to an embodiment of the present invention, in another aspect, an ohmic heating control method is also provided, applicable to any of the above-mentioned ohmic heating devices, such as... Figure 3 As shown, the control methods include:
[0096] To obtain the form of food;
[0097] If the food is in liquid form, it will prompt you to place it in the first heating chamber 101 and control the power supply 400 to be connected to the first circuit 401;
[0098] If the food is in a solid-liquid mixed state, it will prompt you to put it into the second heating chamber 102 and control the power supply 400 and the second circuit 402 to conduct;
[0099] If the food is in solid form, it will prompt you to place it in the third heating chamber 103 and control the power supply 400 and the third circuit 403 to be connected.
[0100] The on / off state of the first circuit 401, the second circuit 402 and the third circuit 403, as well as the heating parameters, can be controlled independently.
[0101] The device acquires the form of the food and prompts the user to place it into the corresponding heating cavity based on its specific form. It also controls the activation of the corresponding circuit. Because the on / off state and heating parameters of the first circuit 401, second circuit 402, and third circuit 403 can be controlled independently, the first heating cavity 101 in the first circuit 401, the second heating cavity 102 in the second circuit 402, and the third heating cavity 103 in the third circuit 403 can be individually controlled. Liquids, solid-liquid mixtures, and solid foods can all be individually controlled for heating time and parameters, avoiding the uneven heating that occurs when multiple food forms are heated simultaneously by an ohmic heating device. This ensures the heating quality of the food and improves user satisfaction and experience. The independent control of the first circuit 401, second circuit 402, and third circuit 403 allows for heating of one type of food or multiple types of food simultaneously, making it widely applicable.
[0102] In some embodiments, the heating parameters include heating temperature and heating duration.
[0103] Heating temperature and heating time are the two most important control parameters in the food heating process. Different forms of food require different amounts of heat during reheating. Taking into account factors such as energy consumption and food taste, different forms of food also correspond to different heating times. By effectively controlling heating temperature and heating time, high-quality heating of different forms of food can be achieved.
[0104] In some embodiments, the ohmic heating control method includes:
[0105] If the food to be heated includes both liquid and solid-liquid mixtures, then the first circuit 401 and the second circuit 402 are activated to prompt the liquid food to be placed into the first heating chamber 101 and the solid-liquid mixture food to be placed into the second heating chamber 102.
[0106] If the food to be heated includes both liquid and solid forms, then the first circuit 401 and the third circuit 403 are turned on to remind the user to put the liquid food into the first heating chamber 101 and the solid food into the third heating chamber 103.
[0107] If the food to be heated includes both a solid-liquid mixture and a solid form, then the second circuit 402 and the third circuit 403 are turned on to remind the user to put the solid-liquid mixture into the second heating chamber 102 and the solid form into the third heating chamber 103.
[0108] If the food to be heated includes liquid, solid-liquid mixture, and solid, then the first circuit 401, the second circuit 402, and the third circuit 403 are activated to remind the user to put the liquid food into the first heating chamber 101, the solid-liquid mixture food into the second heating chamber 102, and the solid food into the third heating chamber 103.
[0109] The ohmic heating control method of the present invention can simultaneously heat multiple types of food. Based on the shape of the food, it can be placed into different heating cavities. The three parallel circuits containing the first heating cavity 101, the second heating cavity 102, and the third heating cavity 103 can be individually controlled to control the on / off state and the heating parameters of each of the three heating cavities. Therefore, it can control different types of food separately, ensuring that different types of food in each heating cavity are heated evenly, thus improving the heating quality and the taste of the food.
[0110] In some embodiments, such as Figure 4 As shown, after obtaining the form of the food, it also includes:
[0111] Obtain the weight of the food and compare it with a preset weight range;
[0112] The ohmic heating device is controlled to operate according to the corresponding heating parameters based on the range in which the food weight falls.
[0113] By obtaining the weight of the food and performing more targeted ohmic heating based on the weight range of the food, heating parameters can be determined more accurately, further improving heating quality.
[0114] In some embodiments, such as Figure 5As shown, obtaining the form of food includes obtaining the form of food input by the user.
[0115] When obtaining the shape of food, the shape of food input by the user can be obtained directly, eliminating the judgment step and simplifying the control steps.
[0116] In some other embodiments, the shape of the food can also be directly identified. By using sensors to identify the shape of the food, the steps of manual selection and input can be eliminated, making it more intelligent.
[0117] In some embodiments, such as Figure 6 As shown, after obtaining the form of the food, it also includes:
[0118] Determine whether a food is a liquid food;
[0119] If the food is liquid, then the first control circuit 401 is turned on.
[0120] First, determine whether the food is liquid. If so, directly control the first circuit 401 to conduct, so that it can work according to the heating parameters and heating time suitable for heating liquid food.
[0121] In some embodiments, such as Figure 7 As shown, after obtaining the form of the food, it also includes:
[0122] Determine whether a food is a liquid food;
[0123] If the food is liquid, then the first control circuit 401 is turned on;
[0124] If the food is non-liquid, then determine whether the food is solid.
[0125] If the food is solid, then control circuit 403 to turn on.
[0126] If the food is not liquid, then determine whether the food is solid. If it is solid, directly control the third circuit 403 to conduct, so that it can work according to the heating parameters and heating time suitable for heating solid food.
[0127] In some embodiments, such as Figure 8 As shown, after obtaining the form of the food, it also includes:
[0128] Determine whether a food is a liquid food;
[0129] If the food is liquid, then the first control circuit 401 is turned on;
[0130] If the food is non-liquid, then determine whether the food is solid.
[0131] If the food is solid, then control the third circuit 403 to conduct;
[0132] If the food is non-solid, then control the second circuit 402 to turn on.
[0133] If the food is neither liquid nor solid, it is determined to be a solid-liquid mixture. The second circuit 402 can be directly turned on to facilitate operation according to the heating parameters and heating time suitable for heating solid-liquid mixtures.
[0134] When a user selects to cook different types of food, the ohmic heating device reminds the user to place the food in a specific heating chamber. Each heating chamber operates independently, and each chamber has two electrodes 200 pieces on its exterior: a positive electrode 200 and a negative electrode 200. Different working electrodes 200 ensure that different chambers heat the food, increasing the heating rate. The heating circuit is as follows: Figure 2 As shown in the image. After the user selects a specific food to heat, the heating cavity can also display the optimal heating time, and automatically power off after heating is complete.
[0135] like Figure 9 As shown, the control panel has selection keys, allowing users to choose the desired heating state based on the food. The three heating chambers are connected in parallel, allowing for free selection. Two specific application examples are given below.
[0136] Example 1: When a user prepares to heat food and selects to heat milk, the device prompts the user to place the milk into the first heating chamber 101. The electrodes 200 at both ends of the first heating chamber 101 then begin working. The first heating chamber 101 displays that the optimal heating time for approximately 300mL of milk is 0.5min-1min, during which the milk can be heated from refrigerated temperature (approximately 4℃) to a suitable drinking temperature (approximately 40-50℃). When a user prepares to heat eight-treasure porridge and selects a solid-liquid mixture, the device prompts the user to place approximately 300g of eight-treasure porridge into the second heating chamber 102. The electrodes 200 at both ends of the second heating chamber 102 then begin working, displaying that the optimal heating time for the eight-treasure porridge is 1min-2min, during which the eight-treasure porridge can be heated from refrigerated temperature (approximately 4℃) to a suitable eating temperature (50-65℃). The device automatically stops heating after the heating is complete. When the user prepares to heat the sandwich, the user selects solid food heating. The device prompts the user to place a sandwich of about 200g in the third heating chamber 103. Then, the electrodes 200 at both ends of the third heating chamber 103 start working. The third heating chamber 103 displays the optimal heating time for the sandwich as 3-5 minutes. At this time, the sandwich can be heated from the refrigeration temperature (about 4°C) to the suitable eating temperature (55-65°C).
[0137] Example 2: When a user prepares to heat two different types of food, such as 300mL of milk and a 200g sandwich, the two foods are placed in the first heating chamber 101 and the third heating chamber 103 respectively. The electrodes 200 on the outside of the two heating chambers are connected. After 0.5min-1min, the milk heating ends and the first circuit 401 is disconnected. At this time, the third heating chamber 103 where the sandwich is located continues to heat for about 2min-3min. The sandwich heating ends and the circuit is completely disconnected. The entire device stops heating.
[0138] This invention employs a heating method using three heating chambers located in three interconnected circuits, enabling simultaneous heating of three different food states: solid, solid-liquid mixture, and liquid. Independent heating of different food states allows users to handle each food item separately, improving the heating effect.
[0139] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.
Claims
1. An ohmic heating device, characterized in that, include: A first circuit (401), a second circuit (402), and a third circuit (403) are arranged in parallel; a first switch (4011) is provided in the first circuit (401), a second switch (4021) is provided in the second circuit (402), and a third switch (4031) is provided in the third circuit (403). A power supply (400) is electrically connected to the first circuit (401), the second circuit (402), and the third circuit (403); The first heating cavity (101) is disposed in the first circuit (401) and is suitable for heating liquid food; The second heating chamber (102) is disposed in the second circuit (402) and is suitable for heating solid-liquid mixed food; The third heating cavity (103) is disposed in the third circuit (403) and is suitable for heating solid food; The first heating chamber (101), the second heating chamber (102), and the third heating chamber (103) can each form an ohmic heating circuit with the power supply (400), and can be independently controlled to switch on and off by the first switch (4011), the second switch (4021), and the third switch (4031).
2. The ohmic heating device according to claim 1, characterized in that, At least one of the first heating cavity (101), the second heating cavity (102), and the third heating cavity (103) contains a conductive ball (300).
3. The ohmic heating device according to claim 2, characterized in that, The conductive ball (300) is a conductive silicone ball.
4. The ohmic heating device according to claim 1, characterized in that, A number of conductive silicone balls are placed in the first heating cavity (101), the second heating cavity (102) and the third heating cavity (103).
5. The ohmic heating device according to any one of claims 1-4, characterized in that, The first heating cavity (101), the second heating cavity (102) and the third heating cavity (103) are all spherical.
6. The ohmic heating device according to claim 5, characterized in that, The bottom sides of the first heating cavity (101), the second heating cavity (102) and the third heating cavity (103) are all provided with supports.
7. An ohmic heating control method, applicable to the ohmic heating device according to any one of claims 1-6, characterized in that, The control method includes: To obtain the form of food; If the food is in liquid form, it will prompt you to place it in the first heating chamber and control the power supply to connect to the first circuit. If the food is in a solid-liquid mixture, it will prompt you to place it in the second heating chamber and control the power supply to the second circuit. If the food is in solid form, it will prompt you to place it in the third heating chamber and control the power supply to the third circuit. The on / off state of the first circuit, the second circuit, and the third circuit, as well as the heating parameters, can be controlled independently.
8. The ohmic heating control method according to claim 7, characterized in that, The heating parameters include heating temperature and heating time.
9. The ohmic heating control method according to claim 7, characterized in that, include: If the food to be heated includes both liquid and solid-liquid mixtures, then the first and second circuits are activated to prompt the user to place the liquid food into the first heating chamber and the solid-liquid mixture into the second heating chamber. If the food to be heated includes both liquid and solid forms, the first and third circuits are activated to prompt the user to place the liquid food into the first heating chamber and the solid food into the third heating chamber. If the food to be heated includes both a solid-liquid mixture and a solid form, the second and third circuits are activated to prompt the food in the solid-liquid mixture to be placed into the second heating chamber and the food in the solid form to be placed into the third heating chamber. If the food to be heated includes liquid, solid-liquid mixture, and solid, then the first, second, and third circuits are activated to prompt the user to place the liquid food into the first heating chamber, the solid-liquid mixture into the second heating chamber, and the solid food into the third heating chamber.
10. The ohmic heating control method according to claim 7, characterized in that, The process of obtaining the food's form also includes: Obtain the weight of the food and compare it with a preset weight range; The ohmic heating device is controlled to operate according to the corresponding heating parameters based on the range in which the food weight falls.
11. The ohmic heating control method according to any one of claims 7-10, characterized in that, The acquisition of food form includes acquiring the form of food input by the user or recognizing the form of food.
12. The ohmic heating control method according to claim 7, characterized in that, The process of obtaining the food's form also includes: Determine whether a food is a liquid food; If the food is liquid, then the first control circuit is activated.
13. The ohmic heating control method according to claim 12, characterized in that, If the food is non-liquid, then determine whether the food is solid. If the food is solid, then the third circuit is activated.
14. The ohmic heating control method according to claim 13, characterized in that, If the food is non-solid, then the second circuit is activated.