Household pulse low-voltage thawing device

Abstract

The utility model discloses a household pulse low-voltage unfreezing device. The household-based pulse low-voltage thawing device comprises at least one conductive module group, each conductive module group comprises two conductive modules, and the two conductive modules contained in the same conductive module group are electrically connected with different terminals of a pulse current generation mechanism respectively; the at least one bag body is connected with the conductive module; the medium adjusting mechanism is connected with the bag body, when the volume of the fluid medium in the bag body changes, the bag body can expand and shrink in the selected direction, and the conductive module connected with the bag body moves in the selected direction accordingly; the conductive module connected with the bag body is tightly attached to the frozen food in the containing space or tends to be separated from the frozen food in the containing space. The low-voltage high-frequency electric field can be provided, frozen meat products can be quickly unfrozen, food cannot be damaged, and the quality of the unfrozen food is better.

Description

Technical Field

[0001] The utility model particularly relates to a household-based pulsed low-voltage thawing device, belonging to the technical field of agricultural product processing. Background Art

[0002] Meats include poultry, livestock, fish, etc. Since they are rich in protein, fat and other nutrients, they have always been the mainstream foods in consumer catering. However, fresh meat is extremely vulnerable to microbial infection and spoilage or deterioration due to air oxidation. Therefore, in order to extend the storage time of meat and maintain its nutritional value, freezing has become the most common and practical storage method, and frozen meat has gradually occupied an important position in the meat market. However, after meat is frozen, it will cause an increase in muscle gaps, fiber damage and protein denaturation. If the thawing process is not good, a large amount of nutritional loss will occur, directly affecting the sensory characteristics of the meat.

[0003] Currently, the thawing methods applied to frozen meat mainly include air thawing, water thawing, microwave thawing, radio frequency thawing, vacuum thawing, ohmic thawing, and electric field thawing, etc. Among them, air thawing and water thawing are the most traditional thawing methods. The difference between the two is only reflected in the different heat transfer media used, but the overall thawing rate is slow and there is more juice loss. Microwave thawing uses the friction heat generation of water molecules under high-frequency electromagnetic waves, and the thawing is rapid, but it is easy to cause surface overheating. Both radio frequency thawing and vacuum thawing are emerging thawing methods, but the former has high condition requirements, and the appearance of the meat after the latter thawing is poor, so it is difficult to be applied to household appliances.

[0004] Although the juice loss after electric field thawing is less, the technologies reported currently usually use high-voltage electric fields, which have certain problems in thawing safety. Although ohmic heating thawing has a relatively fast thawing rate, it is difficult to ensure the uniformity of thawing, and it is extremely easy to cause local "overheating" on the surface of the frozen product, and high voltage is also dangerous. Therefore, it is necessary to develop a household-based pulsed low-voltage thawing device. Summary of the Utility Model

[0005] The main purpose of the utility model is to provide a household-based pulsed low-voltage thawing device, thus overcoming the deficiencies in the prior art.

[0006] To achieve the foregoing utility model purpose, the technical solutions adopted by the utility model include:

[0007] An embodiment of the utility model provides a household-based pulsed low-voltage thawing device, including:

[0008] At least one group of conductive modules, each group of conductive modules includes two conductive modules. In the working state, the two conductive modules included in the same group of conductive modules are spaced apart and arranged opposite to each other along a selected direction. An accommodating space for placing frozen food is formed between the two conductive modules included in the same group of conductive modules. The two conductive modules included in the same group of conductive modules are respectively electrically connected to two different terminals of a pulse current generating mechanism;

[0009] At least one capsule, at least for accommodating a fluid medium. The capsule is arranged on one side of a conductive module facing away from the accommodating space. The capsule is connected to the conductive module, and the position of the capsule is fixed;

[0010] A medium adjusting mechanism, connected to the capsule, and at least for inputting a fluid medium into the capsule. When the volume of the fluid medium in the capsule changes, the capsule can expand and contract along the selected direction, and the conductive module connected to the capsule moves along the selected direction accordingly. The width of the accommodating space in the selected direction changes accordingly. The conductive module connected to the capsule is closely attached to the frozen food located in the accommodating space or tends to separate from the frozen food located in the accommodating space.

[0011] Compared with the prior art, the advantages of the present utility model include: A household-based pulsed low-voltage thawing device provided by the present utility model can provide a low-voltage high-frequency electric field, can quickly thaw frozen meat products, and will not cause damage to the food itself. The quality of the food after thawing is better. Description of the Drawings

[0012] Figure 1 is a schematic diagram of the principle of a household-based pulsed low-voltage thawing device provided in a typical embodiment of the present utility model;

[0013] Figure 2 is the electric field waveform diagram adopted by the present utility model;

[0014] Figure 3 is a schematic structural diagram of a household-based pulsed low-voltage thawing device provided in a typical embodiment of the present utility model in the first working state;

[0015] Figure 4 is a schematic cross-sectional structural diagram of a household-based pulsed low-voltage thawing device provided in a typical embodiment of the present utility model in the first working state;

[0016] Figure 5 is a schematic structural diagram of a household-based pulsed low-voltage thawing device provided in a typical embodiment of the present utility model in the second working state. Detailed Embodiments

[0017] In view of the deficiencies in the prior art, through long-term research and a large number of practices, the inventor of this case was able to propose the technical solution of this utility model. The following will further explain the technical solution, its implementation process, principle, etc.

[0018] The inventor of this case found through research that the electric field frequency is also a key parameter determining the thawing effect. When the electric field frequency increases, the impedance of the thawed sample will decrease, and the current passing through the sample will also increase accordingly, improving the thawing rate. The inventor of this case also found that when two pairs of conductive modules apply voltage to frozen food in different directions, the actual voltage is equal to the vector sum of the two voltages, the impedance of the frozen food will also decrease, and the current passes through from different directions, and the ice crystal melting rate inside the frozen food is faster.

[0019] An embodiment of the present utility model provides a household-based pulsed low-voltage thawing device, including:

[0020] At least one conductive module group, each of the conductive module groups includes two conductive modules. In the working state, the two conductive modules included in the same conductive module group are spaced apart and relatively arranged along a selected direction. An accommodation space for placing frozen food is formed between the two conductive modules included in the same conductive module group. The two conductive modules included in the same conductive module group are respectively electrically connected to two different terminals of a pulsed current generating mechanism;

[0021] At least one bladder, at least for accommodating a fluid medium. The bladder is arranged on a side of a conductive module facing away from the accommodation space. The bladder is connected to the conductive module, and the position of the bladder is fixed;

[0022] A medium adjusting mechanism, connected to the bladder, and at least for inputting a fluid medium into the bladder. When the volume of the fluid medium in the bladder changes, the bladder can expand and contract along the selected direction, and the conductive module connected to the bladder moves along the selected direction accordingly, and the width of the accommodation space in the selected direction changes accordingly. The conductive module connected to the bladder is in close contact with the frozen food located in the accommodation space or tends to be separated from the frozen food located in the accommodation space.

[0023] In a more specific implementation scheme, the household-based pulsed low-voltage thawing device described above includes: two conductive module groups. The two conductive modules included in one of the two conductive module groups are spaced apart along a first direction, and the two conductive modules included in the other are spaced apart along a second direction. The first direction and the second direction are arranged crosswise. The selected direction includes the first direction and the second direction.

[0024] Further, the first direction and the second direction are vertically crossed.

[0025] Further, each of the conductive modules includes one or more electrode plates, and the multiple electrode plates included in each conductive module are arranged in sequence and electrically connected.

[0026] Further, the multiple electrode plates included in each conductive module are electrically connected via a flexible electrical connection structure, and the electrical connection structure can undergo recoverable deformation under an external force, so that the whole conductive module has various forms.

[0027] Further, the flexible electrical connection structure includes electrical connection lines, or the flexible electrical connection structure is integral with the electrode plate, and the thickness of the flexible electrical connection structure is less than the thickness of the electrode plate.

[0028] Further, the flexible electrical connection structure is formed by locally thinning the electrode plate.

[0029] Further, the thickness of the electrode plate does not exceed 0.1 cm. Preferably, the electrode plate can be an aluminum foil or a stainless steel sheet, etc.

[0030] In a more specific embodiment, the household-based pulsed low-voltage thawing device includes: a plurality of the capsules, and the plurality of capsules correspond to the plurality of conductive modules one by one, that is, each conductive module is disposed on one of the capsules.

[0031] Further, the medium adjusting mechanism includes a gas supply mechanism or a liquid circulation supply mechanism.

[0032] Further, the gas supply mechanism includes an air pump.

[0033] Further, the conductive module is detachably connected to the capsule.

[0034] Furthermore, nylon stickers are provided on both the conductive module and the capsule, and the conductive module and the capsule are fixedly connected by bonding with the nylon stickers, or a suction cup structure is provided on at least one of the conductive module and the capsule, and the conductive module and the capsule are fixedly connected by negative pressure adsorption, or magnets are provided on both the conductive module and the capsule, and the conductive module and the capsule are fixedly connected by magnetic adsorption, or an installation groove is provided on the capsule, and the conductive module is embedded in the installation groove.

[0035] Further, the plurality of capsules are fixedly connected in sequence, or the plurality of capsules are fixedly arranged on the same substrate.

[0036] Further, the plurality of capsules communicate with each other.

[0037] Further, the matrix is plastically deformable, and the whole formed by the matrix, the conductive module group and the capsule body can be converted between the working state and the spreading state.

[0038] In a more specific embodiment, the household-based pulsed low-voltage thawing device further includes:

[0039] A pulsed current regulating mechanism, electrically connected to the conductive module group and the pulsed current generating mechanism, and used for regulating the voltage and frequency output by the pulsed current generating mechanism;

[0040] A current monitoring mechanism, the current monitoring mechanism is electrically connected to the conductive module group, and is at least used for monitoring / displaying the current in the closed loop between the conductive module group and the pulsed current generating mechanism.

[0041] Further, the pulsed current regulating mechanism includes a transformer.

[0042] Further, the current monitoring mechanism includes an ammeter.

[0043] In a more specific embodiment, the household-based pulsed low-voltage thawing device further includes: a control mechanism, the control mechanism is connected to the pulsed current generating mechanism, the medium regulating mechanism, the pulsed current regulating mechanism, and the current monitoring mechanism, and the control mechanism is at least used for regulating the working state and working parameters of the medium regulating mechanism and the pulsed current regulating mechanism.

[0044] In a more specific embodiment, the household-based pulsed low-voltage thawing device further includes: a thawing chamber, and the conductive module group and the capsule body are arranged in the thawing chamber.

[0045] Further, a light source is also arranged in the thawing chamber.

[0046] As follows, the technical solution, its implementation process and principle, etc. will be further explained in conjunction with the drawings and specific implementation cases. Unless otherwise specified, the transformers, ammeters, circuit boards, and air pumps used in the embodiments of the present invention.

[0047] In a more typical implementation case, please refer to Figure 1, A household-based pulsed low-voltage thawing device, comprising a thawing chamber, a first control mechanism 121, a second control mechanism 122, a first current monitoring mechanism 131, a second current monitoring mechanism 132, and a first conductive module group and a second conductive module group. The first conductive module group and the second conductive module group are arranged in the sample chamber 210. The first conductive module group includes two first conductive modules 111, which are arranged at intervals along a first direction. The two first conductive modules 111 are respectively electrically connected to two different terminals of the pulsed current generating mechanism. The first control mechanism 121 and the first current monitoring mechanism 131 are connected in series between the first conductive module 111 and the pulsed current generating mechanism. The second conductive module group includes two second conductive modules 112, which are arranged at intervals along a second direction. The two second conductive modules 112 are respectively electrically connected to two different terminals of the pulsed current generating mechanism. The second control mechanism 122 and the second current monitoring mechanism 132 are connected in series between the second conductive module 112 and the pulsed current generating mechanism. Among them, the first direction and the second direction are perpendicularly crossed.

[0048] Specifically, the pulsed current generating mechanism, the first control mechanism 121, the first current monitoring mechanism 131, the two first conductive modules 111 and a part of the frozen food located between the two first conductive modules 111 form a first closed loop; the pulsed current generating mechanism, the second control mechanism 122, the second current monitoring mechanism 132, the two second conductive modules 112 and a part of the frozen food located between the two second conductive modules 112 form a second closed loop. The pulsed current generating mechanism applies pulsed current to the frozen food along the first direction and the second direction, thereby realizing the thawing of the frozen food.

[0049] Specifically, the pulsed waveform of the pulsed electric field used in the embodiments of the present invention is as Figure 2 shown, where the distance between t1 and t2 is the pulse width tw, the distance between t1 and t3 is one pulse period T, and Um is the effective value of the pulsed electric field strength.

[0050] More specifically, the first closed loop and the second closed loop are arranged in parallel, and a pulse current regulating mechanism 140 is further provided between the pulse current generating mechanism and the first closed loop and the second closed loop. The pulse current regulating mechanism 140 is connected between the output end of the pulse current generating mechanism and the first current monitoring mechanism 131 and the second current monitoring mechanism 132. The first current monitoring mechanism 131 and the second current monitoring mechanism 132 are used to monitor and display the current in the closed loop where they are located. The pulse current regulating mechanism 140 is used to adjust the voltage and frequency output by the pulse current generating mechanism. The first control mechanism 121 and the second control mechanism 122 are used to adjust the working state and working parameters of the pulse current regulating mechanism 140. More specifically, the first control mechanism 121 and the second control mechanism 122 adjust the parameters of the generated pulsed electric field by controlling the induced current provided by the pulse current generating mechanism, etc.

[0051] Specifically, the first current monitoring mechanism 131 and the second current monitoring mechanism 132 have a current signal conduction module, which can conduct a signal to the pulse current regulating mechanism 140 / control mechanism when the current exceeds 0.2 mA. The pulse current regulating mechanism 140 can adjust the output voltage of the pulse current generating mechanism to 0 - 36 V according to the signals conducted by the first current monitoring mechanism 131 and the second current monitoring mechanism 132. The first control mechanism 121 and the second control mechanism 122 can at least adjust the frequency of the output voltage of the pulse current generating mechanism to 1 - 10 kHz. Exemplarily, the first current monitoring mechanism 131 and the second current monitoring mechanism 132 can be ammeters, the first control mechanism 121 and the second control mechanism 122 can be PLC controllers, etc., and the pulse current regulating mechanism 140 can be a transformer.

[0052] Specifically, please refer to Figure 3 、 Figure 4 and Figure 5, the household-based pulsed low-voltage thawing device further includes a base body 310, four bladder bodies, and a gas supply mechanism 330. The four bladder bodies are fixedly arranged on the base body 310, and the four bladder bodies are all connected to the gas supply mechanism 330. Two first conductive modules 111 and two second conductive modules 112 are respectively arranged on the four bladder bodies. Among them, the base body 310 is a plastic body, and the overall shapes of the four bladder bodies, the base body 310, the two first conductive modules 111, and the two second conductive modules 112 can be switched between a first working state and a second working state. When the whole is in the first working state, the base body 310 presents a cylindrical structure. Two of the four bladder bodies are arranged opposite to each other along a first direction, and the other two are arranged opposite to each other along a second direction. Correspondingly, the two first conductive modules 111 are arranged opposite to each other along the first direction, and the two second conductive modules 112 are arranged opposite to each other along the second direction. Exemplarily, the base body 310 can be a plastic plate, an aluminum plate, a copper plate, etc. It should be noted that the first control mechanism 121, the second control mechanism 122, the first current monitoring mechanism 131, and the second current monitoring mechanism 132 can all be fixed on the base body 310.

[0053] It should be noted that other auxiliary accessories such as a restraint belt can also be arranged on the base body to maintain the first working state of the base body, that is, to maintain its own cylindrical shape.

[0054] More specifically, the first control mechanism 121, the second control mechanism 122, the first current monitoring mechanism 131, and the second current monitoring mechanism 132 are arranged on the back of the base body 310 facing away from the bladder bodies. More specifically, an operation / display screen 150 is also arranged on the base body 310. The operation / display screen 150 can display / regulate working parameters of the pulsed current regulating mechanism 140, working parameters of the first current monitoring mechanism 131 / second current monitoring mechanism 132, types of frozen foods, thawing time, and other information.

[0055] Specifically, the bladder bodies are arranged between the first conductive module 111 or the second conductive module 112 and the base body 310. When the gas volume in the bladder bodies changes, the bladder bodies can expand and contract along the first direction or the second direction, and the first / second conductive module 112 connected to the bladder bodies moves along the first direction or the second direction accordingly. The first / second conductive module 112 connected to the bladder bodies fits tightly with the frozen foods located between the first / second conductive modules 112 or tends to separate from the frozen foods located between the first / second conductive modules 112.

[0056] More specifically, a pressure sensor can also be arranged on the first conductive module 111 or the second conductive module 112 to monitor information such as the pressure between the first conductive module 111 or the second conductive module 112 and the frozen foods. The pressure sensor can be connected to the control mechanism.

[0057] Specifically, the aforementioned first control mechanism 121 / second control mechanism 122 can also be connected to the air supply mechanism 330 and used to adjust the working state and working parameters of the air supply mechanism 330, so as to adjust the expansion and contraction amount of the bladder, and further adjust the fitting degree between the first / second conductive module 112 and the frozen food. Exemplarily, the air supply mechanism 330 can be an air pump or the like.

[0058] More specifically, the four air bladders 320 can be independent of each other, and the air supply mechanism 330 can supply air to each air bladder 320 independently. Or, two air bladders 320 corresponding to the two first conductive modules 111 / two second conductive modules 112 are connected and communicated with each other. Or, all four air bladders 320 are connected and communicated with each other.

[0059] Specifically, the conductive module is detachably connected to the bladder. Exemplarily, nylon stickers are provided on both the conductive module and the bladder, and the conductive module and the bladder are fixedly connected by bonding with the nylon stickers. Or, a suction cup structure is provided on at least one of the conductive module and the bladder, and the conductive module and the bladder are fixedly connected by negative pressure adsorption. Or, magnets are provided on both the conductive module and the bladder, and the conductive module and the bladder are fixedly connected by magnetic adsorption. Or, an installation groove is provided on the bladder, and the conductive module is embedded in the installation groove.

[0060] Specifically, the shapes of the first conductive module 111 and the second conductive module 112 can be adjusted. More specifically, the structures of the first conductive module 111 and the second conductive module 112 can be the same. Hereinafter, the two are collectively referred to as the conductive module. Each conductive module includes one or more electrode plates, and the multiple electrode plates included in each conductive module are arranged in sequence and electrically connected. More specifically, the multiple electrode plates included in each conductive module are electrically connected through a flexible electrical connection structure, and the electrical connection structure can undergo recoverable deformation under the action of an external force, so that the whole conductive module has multiple shapes. More specifically, the flexible electrical connection structure includes electrical connection lines, or the flexible electrical connection structure is integral with the electrode plate, and the thickness of the flexible electrical connection structure is less than the thickness of the electrode plate. Exemplarily, the flexible electrical connection structure is formed by locally thinning the electrode plate. Exemplarily, the electrode plate can be aluminum foil or the like. The frozen food mainly includes various types of frozen meat products such as fish meat, livestock meat, poultry meat, and meat mince processed therefrom.

[0061] It should be understood that the above embodiments are only for illustrating the technical concept and features of the present utility model, and the purpose is to enable those who are familiar with this technology to understand the content of the present utility model and implement it accordingly, and it cannot be used to limit the protection scope of the present utility model. Any equivalent changes or modifications made according to the spirit and essence of the present utility model should be covered within the protection scope of the present utility model.

Claims

1. A household-based pulsed low-voltage thawing device, characterized in that, Comprising: At least one group of conductive modules, each group of conductive modules comprising two conductive modules. In the working state, the two conductive modules included in the same group of conductive modules are spaced apart and arranged opposite to each other along a selected direction. An accommodating space for placing frozen food is formed between the two conductive modules included in the same group of conductive modules. The two conductive modules included in the same group of conductive modules are respectively electrically connected to two different terminals of a pulse current generating mechanism; At least one bladder, at least for accommodating a fluid medium. The bladder is arranged on a side of one of the conductive modules facing away from the accommodating space. The bladder is connected to the conductive module, and the position of the bladder is fixed; A medium adjusting mechanism, connected to the bladder and at least for inputting a fluid medium into the bladder. When the volume of the fluid medium in the bladder changes, the bladder can expand and contract along the selected direction, and the conductive module connected to the bladder moves along the selected direction accordingly. The width of the accommodating space in the selected direction changes accordingly. The conductive module connected to the bladder is in close contact with the frozen food located in the accommodating space or tends to separate from the frozen food located in the accommodating space.

2. The household-based pulsed low-voltage thawing device according to claim 1, wherein Comprising two groups of conductive modules. The two conductive modules included in one of the two groups of conductive modules are spaced apart along a first direction, and the two conductive modules included in the other group are spaced apart along a second direction. The first direction and the second direction are arranged crosswise. The selected direction includes the first direction and the second direction; And / or, the first direction and the second direction are perpendicularly crosswise.

3. The household-based pulsed low-voltage thawing device according to claim 2, characterized in that: Each conductive module includes one or more electrode plates, and the multiple electrode plates included in each conductive module are arranged in sequence and electrically connected; And / or, the multiple electrode plates included in each conductive module are electrically connected through a flexible electrical connection structure. The electrical connection structure can undergo a recoverable deformation under an external force, so that the whole conductive module has multiple forms; And / or, the flexible electrical connection structure includes electrical connection lines, or the flexible electrical connection structure is integral with the electrode plate, and the thickness of the flexible electrical connection structure is less than the thickness of the electrode plate; And / or, the flexible electrical connection structure is formed by locally thinning the electrode plate.

4. The household-based pulsed low-voltage thawing device according to claim 3, wherein Comprising: A plurality of the bladders, each conductive module being arranged on one of the bladders; And / or, the medium adjusting mechanism includes a gas supply mechanism or a liquid circulation supply mechanism; And / or, the gas supply mechanism includes an air pump.

5. The household-based pulsed low-voltage thawing device according to claim 1 or 4, characterized in that: The conductive module is detachably connected to the bladder; And / or, nylon stickers are provided on both the conductive module and the bladder, and the conductive module and the bladder are fixedly connected by bonding with the nylon stickers. Alternatively, a suction cup structure is provided on at least one of the conductive module and the bladder, and the conductive module and the bladder are fixedly connected by negative pressure adsorption. Alternatively, magnets are provided on both the conductive module and the bladder, and the conductive module and the bladder are fixedly connected by magnetic adsorption. Alternatively, an installation groove is provided on the bladder, and the conductive module is embedded in the installation groove.

6. The household-based pulsed low-voltage thawing device according to claim 4, wherein: The plurality of bladders are fixedly connected in sequence, or the plurality of bladders are fixedly arranged on the same substrate. And / or, the plurality of bladders communicate with each other.

7. The household-based pulsed low-voltage thawing device according to claim 6, wherein: The substrate is deformable, and the whole formed by the substrate, the conductive module group and the bladder can be converted between the working state and the spreading state.

8. The household-based pulsed low-voltage thawing device according to claim 1 or 2, characterized in that, It further includes: A pulse current regulating mechanism, electrically connected to the conductive module group and the pulse current generating mechanism, and used for regulating the voltage and frequency output by the pulse current generating mechanism. A current monitoring mechanism, electrically connected to the conductive module group, and at least used for monitoring / displaying the current in the closed loop between the conductive module group and the pulse current generating mechanism. And / or, the pulse current regulating mechanism includes a transformer. And / or, the current monitoring mechanism includes an ammeter.

9. The household-based pulsed low-voltage thawing device according to claim 8, characterized in that, It further includes: A control mechanism, connected to the pulse current generating mechanism, the medium regulating mechanism, the pulse current regulating mechanism, and the current monitoring mechanism. The control mechanism is at least used for regulating the working state and working parameters of the medium regulating mechanism and the pulse current regulating mechanism.

10. The household-based pulsed low-voltage thawing device according to claim 1 or 2, characterized in that, It further includes: A thawing chamber, where the conductive module group and the bladder are arranged in the thawing chamber. And / or, a light source is further arranged in the thawing chamber.

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