CN206238244U - A kind of high-voltage alternating electric field aquatic products fresh-keeping device - Google Patents

Abstract

The utility model discloses a fresh-keeping device for aquatic products in a high-voltage alternating electric field. The program-controlled wide-band multi-waveform signal generator in the utility model outputs AC signals of different frequencies and waveforms, and the AC signal is boosted through a high-frequency ratio-adjustable transformer to output high-voltage AC; the high-voltage AC is output to the electric field through a high-voltage insulated wire A generating device, one end of the high-voltage resistant insulated wire is connected in series with a safety resistor and then connected to the electrode plate of the electric field generating device, and the other end is directly connected to another electrode plate of the electric field generating device; The cells produced micro-vibrations, so that aquatic products can be kept fresh without freezing in a slightly frozen environment - 3°C - 5°C.

Description

A high-voltage alternating electric field aquatic product preservation device

technical field

The utility model relates to a fresh-keeping device for aquatic products in a high-voltage alternating electric field.

Background technique

At present, the preservation of aquatic products mainly adopts the method of low-temperature refrigeration and freezing. Generally, three temperature zones are selected: 0-4℃ refrigeration, -1-4℃ freezing and -18-40℃ freezing storage. Usually, high-temperature cold storage has a very short preservation period, which can only last for a few days. Long-term freezing will lead to unpredictable protein denaturation, water-holding capacity reduction, and juice loss after thawing. Big discount.

At the same time, fishing boats that use traditional freezing and fresh-keeping often carry crushed ice when they go out to sea, and the fish is mixed with crushed ice when they enter the warehouse, resulting in inevitable mechanical damage to the fish body and uncontrollable microbial infection; the center temperature of the catch is generally high At 0°C, various endogenous deteriorating enzymes in the muscles could not be effectively inhibited, and exogenous microorganisms left on board due to improper preservation interacted with each other, resulting in a sharp decline in the quality and freshness of aquatic products at the source of fishing.

Contents of the invention

In order to solve the problem of traditional freezing preservation on the quality and freshness of aquatic products, prolong the preservation time of aquatic products, reduce the loss of cell nutrients and the growth of bacteria, the utility model provides a high-voltage alternating electric field aquatic product preservation device.

The scheme that the utility model adopts is:

The utility model comprises a program-controlled broadband multi-waveform signal generator, a high-frequency variable ratio adjustable transformer, a safety resistor and an electric field generator, and the program-controlled wide-band multi-waveform signal generator outputs AC signals of different frequencies and waveforms. The adjustable transformer boosts the AC signal and outputs high-voltage AC; the high-voltage AC is output to the electric field generator through a high-voltage insulated wire, one end of the high-voltage insulated wire is connected in series with a safety resistor and then connected to the electrode plate of the electric field generator, and the other end is directly connected to the electric field generator. Another electrode plate of the electric field generating device.

Further, the electric field generating device is mainly composed of a high-voltage insulating plate, a storage partition, a partition bracket, a beam and an electrode plate; the electrode plates are located on both sides of the electric field generating device and are made of stainless steel. The high-voltage insulation board is used for isolation; the storage partition is located in the middle of the two electrode plates, and the middle is covered with through holes, which facilitates the flow of frozen water when the aquatic products are frozen and thawed.

Beneficial effects of the utility model: the utility model provides a high-voltage alternating electric field fresh-keeping device. By using the fresh-keeping device in the freezing and refrigerating equipment, aquatic products can be kept fresh without freezing in a low-temperature environment, that is, effectively inhibiting bacterial reproduction and cell growth. Its own metabolic activities do not damage the cell structure, reduce the loss of nutrients, and lock the freshness and quality of aquatic products to the greatest extent.

Description of drawings

Fig. 1 is the schematic circuit diagram of the high-voltage alternating electric field fresh-keeping device;

Fig. 2 is an isometric view of an electric field generating device;

Fig. 3 is the top view of electric field generating device;

Fig. 4 is a left side view of the electric field generating device.

detailed description

Below in conjunction with accompanying drawing, the utility model will be further described:

The utility model is a high-voltage alternating electric field aquatic product fresh-keeping device applied to small and medium-sized cold storages used in ships or cold chain transportation, which can realize low-temperature non-freezing fresh-keeping of aquatic products. As shown in Figure 1, the high-voltage alternating electric field aquatic product preservation device is mainly composed of a program-controlled broadband multi-waveform signal generator 1, a high-frequency variable ratio adjustable transformer 2, a safety resistor 3 and an electric field generating device 4, of which the electric field generating device 4 Be in the small cold storage or freezer 5, realize freezing and keeping fresh. The high-voltage alternating electric field aquatic product preservation device uses a program-controlled broadband multi-waveform signal generator to output AC signals of different frequencies and waveforms, and then boosts the AC signal through a high-frequency variable ratio adjustable transformer to output high-voltage AC. The high-voltage alternating current is output to the electric field generating device through a high-voltage insulated wire. One end of the wire is connected in series with a safety resistor and then connected to the electrode plate 1 of the electric field generating device, and the other end is directly connected to the electrode plate of the electric field generating device. The electric field generator 4 is used to superimpose the electric field on the aquatic products, so that the cells of the aquatic products vibrate slightly, so that the aquatic products can be kept fresh without freezing in a slightly frozen environment (-3°C to -5°C).

The program-controlled broadband multi-waveform signal generator of the high-voltage alternating electric field aquatic product preservation device is composed of MAX038 function signal generation chip, single-chip microcomputer and peripheral D/A digital-to-analog conversion circuit to output high-frequency signals, and automatically feedbacks the output signals to form a closed-loop control , to improve the accuracy of the output signal frequency. The program-controlled broadband multi-waveform signal generator can generate various waveforms such as triangular wave, sawtooth wave, sine wave and rectangular wave with different frequencies, so as to realize the generation of program-controlled broadband multi-waveform signal.

The high-frequency adjustable ratio transformer can output 0-3000V high-voltage AC. It is mainly composed of a low-voltage adjustable ratio transformer and a solid-ratio high-voltage step-up transformer. First, the output voltage (0-220V) is adjusted through the low-voltage adjustable ratio transformer. , the output voltage is connected to the solid-ratio high-voltage step-up transformer and boosted in a certain ratio. The utility model uses a 220V to 3000V solid-ratio booster.

The interior of the safety resistor is composed of a high-resistance resistor and a leakage protector in series, which controls the current within the safe range of the human body (0-4mA) to avoid electric shock to workers.

As shown in Figure 2, Figure 3 and Figure 4, the internal structure of the electric field generating device is: the electric field generating device is mainly composed of a high voltage insulating plate 6, a storage partition 7, a partition bracket 8, a beam 9 and an electrode plate 10, Inexpensive assembly disassembly and space stacking. The electrode plates are located on both sides of the electric field generator and are made of stainless steel, and the two sides are isolated by high-voltage insulating plates. The storage partition is located in the middle of the two polar plates, and the middle is full of through holes, which facilitates the flow of frozen water when the aquatic product is frozen and thawed. The storage partition and the beam have several sizes, which can be used to adjust the size of the electric field generator and the size of the polar plate. spacing. The side of the electric field generating device can be equipped with crossbeams, partition brackets, electrode plates and high-voltage insulating plates for spatial superposition to increase the output of frozen fresh-keeping.

When using this utility model, first put fresh aquatic products on the storage partition of the electric field generating device, then put the electric field generating device into the refrigerator or freezer, and adjust the temperature to a slightly frozen state (-3°C to - 5°C) for storage. Connect the aquatic product fresh-keeping device to the mains, turn on the safety resistance switch, and the device starts to work. By adjusting the waveform and frequency knobs of the programmable broadband multi-waveform signal generator, the waveform and frequency of the output alternating signal can be selected. Then adjust the voltage regulating knob of the high-frequency variable ratio adjustable transformer to adjust the voltage value between the two polar plates, and finally form a certain electric field superposition between the two polar plates. The range of electric field intensity can be adjusted by adjusting the length of the separator. For example, if the length of the separator is selected to be 200mm, and the maximum voltage between the two plates is 3000V, the electric field intensity can be adjusted within the range of 0-1.5WV/m. For example, the length of the separator is selected. 100mm, the maximum voltage between the two pole plates 10 is 3000V, then the electric field intensity can be adjusted in the range of 0-3WV/m, if the length of the separator 7 is selected as 300mm, the maximum voltage between the two pole plates is 3000V, then the electric field intensity can be adjusted between 0-3WV/m. Adjust within the range of 1WV/m.

To sum up, the device can output high-voltage alternating electric fields with different frequencies, waveforms and intensities according to the fresh-keeping process requirements of different aquatic products, and superimpose the electric field on aquatic products in a slightly frozen environment, so that aquatic products form fine ice crystals during the freezing process. Prevent the cell membrane from being pierced, and keep the nutrients in the cells to the greatest extent. The application of this device can greatly improve the source of fishing boat catches and the freshness preservation level in the cold chain transportation process, maintain the freshness and quality of aquatic products to the greatest extent, improve the quality of aquatic products, and solve the problem of relative shortage of high-quality aquatic products. Make full use of seafood resources to provide guarantees and improve fishermen's economic benefits.

Claims (2)

1. A high-voltage alternating electric field aquatic product preservation device, including a program-controlled broadband multi-waveform signal generator, a high-frequency variable ratio adjustable transformer, a safety resistor and an electric field generator, characterized in: a program-controlled broadband multi-waveform signal generator Output AC signals of different frequencies and waveforms, step up the AC signal through a high-frequency variable ratio adjustable transformer, and output high-voltage AC; the high-voltage AC is output to the electric field generator through a high-voltage insulated wire, and one end of the high-voltage insulated wire is connected in series with a safety The resistor is connected to the electrode plate of the electric field generator, and the other end is directly connected to the other electrode plate of the electric field generator. 2. A high-voltage alternating electric field fresh-keeping device for aquatic products according to claim 1, characterized in that: the electric field generator is mainly composed of a high-voltage insulating plate, a storage partition, a partition bracket, a beam and an electrode plate Composition; the electrode plates are located on both sides of the electric field generating device, which are made of stainless steel, and the two sides are isolated by high-voltage insulating plates; the storage partition is located in the middle of the two electrode plates, and the middle is full of through holes, which is convenient for freezing and thawing of aquatic products When the frozen water flows out.