Food material unfreezing device

Abstract

The utility model provides a food material thawing device which comprises an upper electrode plate and a lower electrode plate which are vertically arranged at an interval, an upper magnet is fixed above the upper electrode plate, and a lower magnet is fixed below the lower electrode plate; the electric control module is respectively connected with the upper electrode plate and the lower electrode plate and is used for applying voltage between the upper electrode plate and the lower electrode plate; the electric control module is further connected with the upper magnet and the lower magnet and used for enabling the upper magnet and the lower magnet to generate mutual attraction or mutual repulsive force. The upper electrode plate and the lower electrode plate can be close to each other or far away from each other, so that the to-be-unfrozen food material between the upper electrode plate and the lower electrode plate is clamped, and ohmic unfreezing is performed on the to-be-unfrozen food material. According to the food material unfreezing device, the food material is pressed by the upper electrode plate and the lower electrode plate through the magnet, and the food material is heated and unfrozen by utilizing heat generated by the magnet, so that the problems that the initial ohmic unfreezing is relatively slow and the contact between the electrode plates and the food material is poor are solved, the ohmic unfreezing speed is increased, and the reliability is enhanced.

Description

Technical Field

[0001] This utility model relates to a thawing device, and more particularly to an ohmic thawing method for thawing food. Background Technology

[0002] Ohmic defrosting typically involves applying an electric current to frozen food through contact between electrode plates. However, the following drawbacks affect the defrosting speed and reliability of ohmic defrosting: Because frozen meat comes in various shapes and has a hard texture, it's difficult for the electrode plates to maintain close contact, resulting in significant resistance at the contact point. This reduces defrosting power and slows down the defrosting process. Furthermore, as the food heats up, ice crystals melt, and the food's shape changes, potentially leading to poor contact between the defrosting plates and the food, thus hindering the proper functioning of ohmic defrosting.

[0003] Most of the water in frozen meat exists in the form of ice crystals, resulting in high electrical resistance at low temperatures. As the temperature rises, the resistance decreases. This characteristic of frozen meat leads to very low thawing efficiency in the initial stage of ohmic thawing. Furthermore, the prolonged low temperature and high resistance further reduce thawing power, creating a vicious cycle that significantly prolongs the thawing time. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a food defrosting device that can improve the defrosting speed.

[0005] This utility model solves the above-mentioned technical problems through the following technical solution: a food thawing device, comprising:

[0006] An upper electrode plate and a lower electrode plate are arranged at an interval between the upper and lower electrodes. An upper magnet is fixed above the upper electrode plate, and a lower magnet is fixed below the lower electrode plate.

[0007] An electronic control module is connected to the upper electrode plate and the lower electrode plate respectively, and is used to apply voltage between the two.

[0008] The electronic control module is also connected to the upper magnet and the lower magnet respectively, so as to generate a mutual attraction force or a mutual repulsion force between the upper magnet and the lower magnet.

[0009] The upper and lower electrode plates can move closer or further apart to clamp the food to be thawed between them, thus performing ohmic thawing on the food.

[0010] Preferably, the device further includes a guide component for connecting to the upper electrode plate and / or the lower electrode plate, wherein the upper electrode plate and / or the lower electrode plate can move up and down along the guide component, thereby moving closer to or further away from each other.

[0011] Preferably, the upper magnet and the lower magnet include coils, and the electronic control module is used to apply current to the coils.

[0012] Preferably, a magnet is provided above the upper electrode plate and spaced between the upper electrode plate and the upper electrode plate;

[0013] and / or,

[0014] A magnet is provided between the lower electrode plate and the lower electrode plate.

[0015] Preferably, the device further includes a housing, the housing having a cavity for accommodating the food to be heated, and the upper electrode plate, lower electrode plate, upper magnet, and lower magnet all located within the cavity.

[0016] Preferably, the electronic control module is connected to the upper electrode plate, lower electrode plate, upper magnet, and lower magnet via a wiring harness.

[0017] Preferably, the lower electrode plate is fixed, and the upper electrode plate can move up and down along the guide member, thereby moving closer to or further away from the lower electrode plate.

[0018] Preferably, the guide component includes at least two multi-section guide posts, which are respectively connected to the upper electrode plate.

[0019] Preferably, the multi-section guide post is disposed in the corresponding guide groove of the outer shell, and has a preset frictional force with the guide groove.

[0020] Preferably, the magnet is a permanent magnet.

[0021] The significant advantages of this invention are as follows: The magnet presses the upper and lower electrode plates firmly against the food, reducing contact resistance. Simultaneously, the heat generated by the magnet, especially the coil, is used to thaw the food, overcoming the initial slowness of ohmic defrosting and poor contact between the electrode plates and the food. This results in faster ohmic defrosting and improved reliability. Furthermore, the magnet allows the electrode plates to move automatically closer or further away without manual intervention, enhancing reliability. The magnet's attraction force can be adjusted according to different stages of defrosting, ensuring defrosting speed while preventing overheating and damage to food quality, and simultaneously reducing energy consumption. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of a food defrosting device according to an embodiment of the present invention. Detailed Implementation

[0023] The present invention will be described more clearly and completely below with reference to the accompanying drawings, using a preferred embodiment.

[0024] A food defrosting device, such as Figure 1 As shown, it includes an upper electrode plate 10 and a lower electrode plate 20 arranged at an interval. An upper magnet 30 is fixed above the upper electrode plate, and a lower magnet 40 is fixed below the lower electrode plate 20. The upper electrode plate 10 and the lower electrode plate 20 are used to place the food to be thawed 100. The upper electrode plate and the lower electrode plate can move closer to each other or further away, thereby clamping the food to be thawed 100 between them, and performing ohmic thawing of the food to be thawed 100.

[0025] The electronic control module 13 is connected to the upper electrode plate 10 and the lower electrode plate 20 respectively, and is used to apply voltage between the two. When the food is placed between the upper and lower electrode plates, when the upper electrode plate 10 and the lower electrode plate 20 come into contact with the food to be thawed 100, an alternating current is generated in the food, so that the food is heated and thawed.

[0026] The electronic control module 13 is also connected to the upper magnet 30 and the lower magnet 40 respectively, so as to generate a mutual attraction force or a mutual repulsion force between the upper magnet and the lower magnet.

[0027] Preferably, the electronic control module 13 is connected to the upper electrode plate, the lower electrode plate, the upper magnet, and the lower magnet via a wiring harness.

[0028] Furthermore, both the upper and lower magnets include coils, and the electronic control module applies current to the coils. The attractive and repulsive forces generated between the upper magnet 30 and the lower magnet 40 are altered by controlling the intensity and direction of the current applied to the coils. For example, when the upper magnet 30 and the lower magnet 40 initially have an attractive force, changing the current direction of one of the magnets will generate a repulsive force between them. Increasing the current in the coil of one magnet, or simultaneously increasing the current in the coils of both magnets, can increase the attractive or repulsive force between the two magnets, and vice versa.

[0029] Furthermore, the device also includes a housing 12, which has a cavity for accommodating the food to be heated. The upper electrode plate 10, the lower electrode plate 20, the upper magnet 30, and the lower magnet 40 are all located in the cavity, which is used to place the food 100 to be thawed.

[0030] Furthermore, the device also includes a guide component 11 for connecting to the upper electrode plate and / or the lower electrode plate. The upper electrode plate and / or the lower electrode plate can move up and down along the guide component 11, thereby moving closer to or further away from each other. Preferably, the lower electrode plate is fixed to the cavity of the outer casing 12, and the upper electrode plate 10 is fixedly connected to the guide component and moves up and down under the guidance of the guide component, moving away from or closer to the lower electrode plate 20. In this way, the food to be thawed can be placed on the lower electrode plate without needing to move up and down before or after heating.

[0031] Furthermore, the guide component 11 includes at least two multi-section guide posts, each connected to the upper electrode plate. The multi-section guide posts are disposed within corresponding guide grooves in the outer casing and have a predetermined frictional force with the guide grooves, ensuring that the upper electrode plate 10 remains stable during its vertical movement relative to the lower electrode plate.

[0032] The working principle of this food defrosting device is as follows: In response to the placement of food to be defrosted between the upper and lower electrode plates, a voltage is applied between the upper and lower electrode plates; an initial attractive force is generated between the upper and lower magnets, causing the upper and lower electrode plates to move towards each other and press the food to be defrosted; defrosting begins as soon as the food is placed, and the voltage is applied between the upper and lower electrode plates. When the food simultaneously contacts the upper and lower electrode plates, a current is generated, which heats and defrosts the food. Based on the initial attractive force generated between the upper and lower magnets, the upper and lower electrode plates can move closer together, thus pressing the food to be defrosted between them.

[0033] In response to the upper and lower electrode plates pressing the food to be thawed, a first attraction force is generated between the upper and lower magnets and maintained for a first preset time period; the first attraction force is less than the initial attraction force; when the initial attraction force causes the upper and lower electrode plates to move relative to each other, and when the two press the food to be thawed, a first attraction force is generated between the upper and lower magnets, and the first attraction force is less than the initial attraction force, that is, the food is heated by current while the food is pressed.

[0034] The change in attraction force between the initial attraction force and the first attraction force can be achieved by adjusting the current flowing through the upper and lower magnets. The current flowing through both magnets can be reduced simultaneously, or one of them can be reduced.

[0035] When the upper magnet and the lower magnet maintain a first attractive force for a first preset time period, a repulsive force is generated between them. This first preset time period is the defrosting stage. At the end of the defrosting stage, the upper and lower magnets move away from the food to be defrosted, marking the end of the defrosting stage.

[0036] As another optional implementation, the first preset time period may include two or more segments, for example, it may include a second preset time period and a third preset time period. Similarly, the first suction force may also include multiple suction forces, for example, it may include a second suction force and a third suction force.

[0037] Therefore, the above-mentioned response to the upper and lower electrode plates pressing the food to be thawed, causing a first attraction between the upper and lower magnets and maintaining it for a first preset time period, specifically includes: first causing a second attraction between the upper and lower magnets and then a third attraction; responding to the upper and lower electrode plates pressing the food to be thawed, causing a second attraction between the upper and lower magnets and maintaining it for a second preset time period; and responding to maintaining the second attraction between the upper and lower magnets for a second preset time period, causing a third attraction between the upper and lower magnets and maintaining it for a third preset time period.

[0038] Those skilled in the art can set the lengths of the second and third preset time periods in the first preset time period as needed, and can also set the magnitudes of the second and third suction forces as needed. For example, the second preset time period may be shorter than the third preset time period, such as the second preset time period being a few seconds, such as 5s or 10s, while the third preset time period may be a few minutes, such as 1-5 minutes or 5-10 minutes, and the second suction force may be greater than the third suction force.

[0039] As another optional embodiment of this utility model, a magnet 15 is provided between the upper electrode plate and the upper electrode plate, and / or a magnet is provided between the lower electrode plate and the lower electrode plate.

[0040] Preferably, the magnet 15 is a permanent magnet, used to generate an attractive force or a repulsive force between itself and the upper magnet or the lower magnet.

[0041] For example, when an initial attractive force is generated between the upper magnet and the lower magnet, a repulsive magnetic force is simultaneously generated between the permanent magnet and the upper magnet, and / or between the permanent magnet and the lower magnet. This causes the upper and lower electrode plates to move towards each other, pressing the food to be thawed. For example, if the polarity of the permanent magnet facing the upper magnet is the S pole, then the initial polarity of the upper magnet is S upwards and N downwards; similarly, the initial polarity of the lower magnet is S upwards and N downwards.

[0042] When the first attractive force between the upper magnet and the lower magnet reaches a first preset time period, an attractive magnetic force is generated between the upper magnet and the permanent magnet, while a repulsive magnetic force is generated between the upper magnet and the lower magnet. For example, if the polarity of the permanent magnet facing the upper magnet is S pole, then the upward polarity of the upper magnet is changed to N pole and the downward polarity to S pole, while the polarity of the lower magnet remains S pole upward and N pole downward, resulting in a repulsive magnetic force between the upper and lower magnets.

[0043] By utilizing the mutual attraction or repulsion between the permanent magnet and the upper magnet, the movement of the upper and lower electrode plates becomes more reliable and faster, thereby improving the defrosting efficiency.

[0044] This food defrosting device uses magnets to press the upper and lower electrode plates firmly against the food, reducing contact resistance. Simultaneously, it utilizes the heat generated by the magnets, particularly the coils, to defrost the food. This overcomes the initial slowness and poor contact between the electrode plates and the food in ohmic defrosting, resulting in faster defrosting speed and enhanced reliability. Furthermore, the magnets allow the electrode plates to move automatically closer or further away, eliminating the need for manual operation and ensuring high reliability. The magnetic force can be adjusted according to different stages of defrosting, maintaining defrosting speed while preventing overheating and damage to food quality, and simultaneously reducing energy consumption.

[0045] While specific embodiments of this disclosure have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this disclosure is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this disclosure, but all such changes and modifications fall within the scope of protection of this disclosure.

Claims

1. A food defrosting device, characterized in that, Including: An upper electrode plate and a lower electrode plate are arranged at an interval between the upper and lower electrodes. An upper magnet is fixed above the upper electrode plate, and a lower magnet is fixed below the lower electrode plate. An electronic control module is connected to the upper electrode plate and the lower electrode plate respectively, and is used to apply voltage between the two. The electronic control module is also connected to the upper magnet and the lower magnet respectively, so as to generate a mutual attraction force or a mutual repulsion force between the upper magnet and the lower magnet. The upper and lower electrode plates can move closer or further apart to clamp the food to be thawed between them, thus performing ohmic thawing on the food.

2. The food defrosting device as described in claim 1, characterized in that, It also includes a guide component for connecting to the upper electrode plate and / or the lower electrode plate, wherein the upper electrode plate and / or the lower electrode plate can move up and down along the guide component, thereby moving closer to or further away from each other.

3. The food defrosting device as described in claim 1, characterized in that, The upper magnet and the lower magnet include coils, and the electronic control module is used to apply current to the coils.

4. The food defrosting device as described in claim 1, characterized in that, A magnet is provided at an interval above and between the upper electrode plate and the upper electrode plate; and / or, A magnet is provided between the lower electrode plate and the lower electrode plate.

5. The food defrosting device as described in claim 1, characterized in that... The device also includes a housing, which contains a cavity for accommodating the food to be heated. The upper electrode plate, the lower electrode plate, the upper magnet, and the lower magnet are all located within the cavity.

6. The food defrosting device as described in claim 1, characterized in that, The electronic control module is connected to the upper electrode plate, lower electrode plate, upper magnet, and lower magnet via a wiring harness.

7. The food defrosting device as described in claim 2, characterized in that, The lower electrode plate is fixed, while the upper electrode plate can move up and down along the guide member, thereby moving closer to or further away from the lower electrode plate.

8. The food defrosting device as described in claim 7, characterized in that, The guide component includes at least two multi-section guide posts, which are respectively connected to the upper electrode plate.

9. The food defrosting device as described in claim 8, characterized in that, The multi-section guide posts are disposed in the corresponding guide grooves of the outer shell, and have a preset frictional force with the guide grooves.

10. The food defrosting device as described in claim 4, characterized in that, The magnet is a permanent magnet.

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