A fresh-keeping device and a power recovery device and method for the fresh-keeping device

Abstract

The application relates to a fresh-keeping device, which comprises a high-voltage electric field generating device, the high-voltage electric field generating device comprising two oppositely arranged electrodes and a power supply module, the power supply module outputting an alternating voltage to the electrodes, a storage area being formed between the two electrodes, the fresh-keeping device further comprising a power recovery device, the power recovery device comprising a switch control module, a first switch, a second switch, a charging module and an electricity storage module, the first switch being connected to the two electrodes and the power supply module, the second switch being connected to the two electrodes and the charging module, the first switch and the second switch being connected to the switch control module respectively, and the charging module being connected to the electricity storage module. The application also relates to a power recovery device and a method for the fresh-keeping device.

Description

Technical Field

[0001] This invention relates to the field of food preservation technology, and more particularly to a food preservation device and a power recovery apparatus and method for the food preservation device. Background Technology

[0002] To preserve fruits, vegetables, meats, and other foods for extended periods, people typically place them in a frozen environment. However, prolonged freezing and thawing can damage their cellular molecules, significantly reducing freshness and even causing spoilage. To maintain the freshness and activity of refrigerated foods and organisms for longer periods, an alternating high-voltage electric field is applied to the freezing space. This alternating electric field causes slight vibrations in the water molecules within the refrigerated items, making them less likely to bind together, thus preventing the items from freezing even at their freezing point.

[0003] Applying a high-voltage alternating electric field of several thousand volts to food stored in a frozen low-temperature environment is an important consideration. Energy saving is an important aspect to consider. Usually, people consider the rationality of power consumption and the efficiency of use when designing power supply equipment and systems. However, under the premise of achieving the same preservation effect of alternating high-voltage electric field, how to reduce the energy loss of electric field to achieve further energy saving is a problem that should be considered. Summary of the Invention

[0004] Therefore, it is necessary to provide a more energy-efficient food preservation device and a power recovery device and method for the food preservation device.

[0005] A food preservation device includes a high-voltage electric field generating device, which includes two electrodes arranged opposite each other and a power supply module. The power supply module outputs alternating voltage to the electrodes, and a storage area is formed between the two electrodes. The food preservation device also includes a power recovery device, which includes a switch control module, a first switch, a second switch, a charging module, and a storage module. The first switch connects the two electrodes and the power supply module, the second switch connects the two electrodes and the charging module, the first switch and the second switch are respectively connected to the switch control module, and the charging module is connected to the storage module.

[0006] Furthermore, the power recovery device also includes a synchronization module that connects the power supply module and the switch control module. The synchronization module provides the switch control module with a synchronization signal for the alternating voltage output by the power supply module.

[0007] Furthermore, the first switch also has a filtering module to prevent backflow interference from the load side of the power supply module to the output of the power supply module.

[0008] Furthermore, the charging module includes an input voltage conversion and shaping module for converting alternating input voltage into a single positive or negative voltage.

[0009] The utility model relates to a power recovery device for a fresh-keeping equipment, the fresh-keeping equipment includes high voltage electric field generating device, high voltage electric field generating device includes two electrodes arranged oppositely, power supply module and the first switch of connecting two electrodes and power supply module, and power supply module exports the alternating voltage to electrode, and forms the article area between two electrodes, and the power recovery device includes switch control module, first switch, second switch, charging module and storage module, first switch connects two electrodes and power supply module, second switch connects the two electrodes and charging module, and first switch and second switch are connected to switch control module respectively, and charging module connects storage module.

[0010] Further, the power recovery device further comprises a synchronization module connected to the power supply module and the switch control module, the synchronization module providing the switch control module with a synchronization signal of the alternating voltage output by the power supply module.

[0011] Further, the first switch further has a filter module for preventing the reverse interference of the power supply module load side on the output end of the power supply module.

[0012] Further, the charging module comprises an input voltage unidirectional conversion shaping module for converting the alternating input voltage into a single positive or negative voltage.

[0013] A power recovery method for a fresh-keeping equipment, comprising the following steps:

[0014] inputting an alternating voltage;

[0015] generating a synchronization signal of the input alternating voltage;

[0016] controlling the first switch and the second switch to turn on / off according to the synchronization signal,

[0017] when the first switch is turned on and the second switch is turned off, supplying power to the electrode to form a high-voltage electrostatic field,

[0018] when the second switch is turned on and the first switch is turned off, the electrode with the high-voltage electrostatic field charges the storage module.

[0019] Further, the method further comprises the step of filtering the reverse interference of the power supply module load side by the first switch when the first switch is turned on and the second switch is turned off.

[0020] Further, the method further comprises the step of shaping and converting the input voltage by the charging module into a single positive or negative voltage when the second switch is turned on and the first switch is turned off.

[0021] The preservation equipment and power recovery device and method for the preservation equipment of the present invention control the power on / off of the first switch and the second switch by the switch control module. In the process of generating an alternating high voltage electrostatic field in the storage room to realize the preservation function, the potential energy stored in the electrodes can also be recovered by the energy storage module, thus achieving energy saving effect. Attached Figure Description

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

[0023] Figure 2 yes Figure 1 The waveform of the alternating voltage output by the power supply module.

[0024] Figure 3 yes Figure 1 Flowchart of a power recovery method for food preservation equipment. Detailed Implementation

[0025] 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, and 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.

[0026] Please see Figure 1 The preservation device 100, which is an embodiment of the present invention, includes a high-voltage electric field application device 20 and an electric power recovery device 30.

[0027] In this embodiment, the storage compartment 10 is provided with a storage area 12 for items that need to be kept fresh.

[0028] The high-voltage electric field application device 20 is used to generate a high-voltage electric field and includes two electrodes 21 and a power supply module 22.

[0029] The power supply module 22 provides alternating voltage to the two electrodes 21 via two electrical lines. The storage area 12 is located between the two electrodes 21, and the charge potential difference between the two electrodes 21 will generate an electrostatic field in the storage area 12.

[0030] The power recovery device 30 includes a synchronization module 31, a switch control module 32, a first switch 33, a second switch 34, a charging module 35, and a power storage module 36.

[0031] The synchronization module 31 provides the output voltage synchronization signal 32 of the power supply module 22 to the switch control module 32 to ensure that the on-off control of the first switch 33 and the second switch 34 by the switch control module 32 is precisely synchronized with the output voltage waveform of the power supply module 22. For example, the synchronization signal can be triggered by the rising edge or the falling edge of the output voltage of the power supply module 22, and is output to the switch control module 32 by the synchronization module 31, or the function of the synchronization module 31 can be realized by software time period calculation.

[0032] The first switch 33 is arranged on the two electric lines between the two electrodes 21 and the power supply module 22, and is used to switch the on-off state between the power supply module 22 and the two electrodes 21. The first switch 33 is different from the self-switch of the power supply module 22, and is independently arranged for synchronous control by the switch control module 32. Further, the first switch 33 further includes a filter module (not shown in the figure), which has the function of reducing the reverse interference of the electrode 21 voltage (regarded as the load voltage of the power supply module 22) on the output end of the power supply module 22.

[0033] The second switch 34 is arranged between the two electrodes 21 and the charging module 35, and is connected to the two output lines of the two electrodes 21, and is controlled by the switch control module 32, and is used to switch the line between the two electrodes 21 and the charging module 35.

[0034] The charging module 35 is arranged between the second switch 34 and the power storage module 36, and is used to charge the power storage module 36. Further, the charging module 35 further includes an input voltage conversion shaping module (not shown in the figure), which has the function of shaping and converting the input voltage into a single positive or negative voltage.

[0035] The working process of the power recovery device for the fresh-keeping equipment according to the embodiment of the application is as follows:

[0036] Figure 2is the output voltage waveform of the power supply module 22, referring to the working process in a complete cycle period (i.e. T=t1+t2+t3+t4 period): according to the synchronization signal, the switch control module 32 controls the first switch 33 to be in the on state and the second switch 34 to be in the off state at time points a to b (t1 period), so that the power supply module 22 charges the two electrodes 21 through the line, thereby forming a high-voltage electrostatic field in the storage area 12 in the chamber 10; at time points b (i.e. the electrode voltage is at the highest peak) to c (t2 period), the first switch 33 is controlled to be in the off state and the second switch 34 is controlled to be in the on state, so that the charge (potential energy) of the electrode 21 is charged to the storage module 36 through the charging module 35; at time points c to d (t3 period), the on / off states of the first switch 33 and the second switch 34 are the same as those in the t1 period; at time points d to e (t4 period), the on / off states of the first switch 33 and the second switch 34 are the same as those in the t2 period. In this way, the charging and discharging of the electrode 21 and the power recovery process in a cycle T are completed, and the cycle is repeated.

[0037] Specifically, taking the voltage waveform shown in Figure 2 as an example, one cycle (T) is taken, T=t1+t2+t3+t4, wherein t1, t2, t3, t4 are represented as a-b, b-c, c-d, d-e on the corresponding time axis (t). The following table illustrates the charging and discharging working process in one cycle waveform:

[0038]

[0039] Please refer to Figure 3 , which is a power recovery method for a fresh-keeping device according to an embodiment of the present application, comprising the following steps:

[0040] input alternating voltage;

[0041] generate a synchronization signal of the input alternating voltage;

[0042] control the on / off of the first switch and the second switch according to the synchronization signal, wherein:

[0043] when the first switch is on and the second switch is off, the electrode is discharged to form a high-voltage electrostatic field,

[0044] when the second switch is on and the first switch is off, the storage module is charged.

[0045] The above method further comprises the following steps:

[0046] when the first switch is on and the second switch is off, the first switch filters the interference on the load side of the power supply module.

[0047] When the second switch is on and the first switch is off, the charging module shapes and converts the input voltage into a single positive or negative voltage.

[0048] The fresh-keeping device, the power recovery device and the method for the fresh-keeping device, the switch control module 32 provides the voltage synchronization signal output by the power supply module 22 to the switch control module 32 by means of the synchronization module 31, controls the on / off of the first switch 33 and the second switch 34, and in the process of generating the high-voltage electrostatic field in the chamber 10 to realize the fresh-keeping function, the power output by the power supply module 22 can also be recovered by the power storage module 36, so that the electrostatic field energy loss is reduced, and the energy-saving effect is achieved.

[0049] The above examples are only used to illustrate the technical solutions of the present application but not limit the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the present application.

Claims

1. A fresh-keeping device, comprising a high-voltage electric field generating device, the high-voltage electric field generating device comprising two electrodes arranged oppositely, a power supply module outputting an alternating voltage to the electrodes, and a storage area formed between the two electrodes, characterized in that: The fresh-keeping device further comprises a power recovery device, the power recovery device comprises a switch control module, a first switch, a second switch, a charging module and a power storage module, the first switch is connected with the two electrodes and the power supply module, the second switch is connected with the two electrodes and the charging module, the first switch and the second switch are connected to the switch control module respectively, the charging module is connected with the power storage module, and the charging module comprises an input voltage conversion and shaping module, which is used for converting an alternating input voltage into a single positive or negative voltage.

2. The fresh keeping apparatus of claim 1, wherein: The power recovery device further comprises a synchronization module connected with the power supply module and the switch control module, and the synchronization module provides a synchronization signal of the alternating voltage output by the power supply module to the switch control module.

3. The fresh keeping apparatus of claim 1, wherein: The first switch further has a filter module, which is used for preventing or reducing the reverse interference of the power supply module load side on the output end of the power supply module.

4. A power recovery device for a fresh-keeping apparatus, the fresh-keeping apparatus comprising a high-voltage electric field generating device, the high-voltage electric field generating device comprising two electrodes arranged oppositely, a power supply module outputting an alternating voltage to the electrodes, and a storage area formed between the two electrodes, characterized in that: The power recovery device comprises a switch control module, a first switch, a second switch, a charging module and a power storage module, the first switch is connected with the two electrodes and the power supply module, the second switch is connected with the two electrodes and the charging module, the first switch and the second switch are connected to the switch control module respectively, the charging module is connected with the power storage module, and the charging module comprises an input voltage one-way conversion and shaping module, which is used for converting an alternating input voltage into a single positive or negative voltage.

5. The power recovery device for a fresh keeping apparatus according to claim 4, wherein: The power recovery device further comprises a synchronization module connected with the power supply module and the switch control module, and the synchronization module provides a synchronization signal of the alternating voltage output by the power supply module to the switch control module.

6. The power recovery device for a fresh keeping apparatus according to claim 4, wherein: The first switch further has a filter module, which is used for preventing or reducing the reverse interference of the power supply module load side on the output end of the power supply module.

7. A power recovery method for the fresh-keeping device as claimed in any one of claims 1 to 3, comprising the following steps: inputting an alternating voltage; generating a synchronization signal of the input alternating voltage; controlling the first switch and the second switch to be turned on / off according to the synchronization signal, when the first switch is turned on and the second switch is turned off, the electrodes are supplied with power to form a high-voltage electrostatic field, when the second switch is turned on and the first switch is turned off, the electrodes with the high-voltage electrostatic field charge the power storage module.

8. The power recovery method of claim 7, wherein: The method further comprises the step of filtering the reverse interference of the power supply module load side on the output end of the power supply module when the first switch is turned on and the second switch is turned off.

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