CN106359527A - High-voltage alternating-electric-field marine product preservation device - Google Patents

Abstract

The invention discloses a high-voltage alternating electric field aquatic product preservation device. The program-controlled broadband multi-waveform signal generator in the present invention outputs AC signals of different frequencies and waveforms, and the AC signal is boosted by 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 to generate 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 generator, and the other end is directly connected to the other electrode plate of the electric field generator; the electric field generator is used to superimpose the electric field on aquatic products, so that the Cells produce micro-vibrations, so that aquatic products can be kept fresh without freezing in a slightly frozen environment -3°C to -5°C.

Description

High-voltage alternating electric field aquatic product preservation device

technical field

The invention relates to a high-voltage alternating electric field aquatic product preservation device.

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 present invention provides a high-voltage alternating electric field aquatic product preservation device .

The scheme that the present invention adopts is:

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 a solid-ratio high-voltage step-up transformer and boosted in a certain ratio. The present invention 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.

The internal structure of the electric field generating device is: 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, which are cheap to assemble, disassemble and space superimposed. 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 products are 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 beams, partition brackets, electrode plates and high-voltage insulating plates for spatial superposition to increase the output of frozen fresh-keeping.

Beneficial effects of the present invention: the present invention provides a high-voltage alternating electric field fresh-keeping device, which can be used in freezing and refrigerating equipment to keep aquatic products fresh without freezing, that is, to effectively inhibit bacterial reproduction and cell metabolism activities without destroying the cell structure, reducing the loss of nutrients, and maximally locking the freshness and quality of aquatic products.

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

The present invention will be further described below in conjunction with accompanying drawing:

The invention is a high-voltage alternating electric field aquatic product fresh-keeping device applied to small and medium-sized refrigerators for marine 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 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 the aquatic products form fine ice crystals during the freezing process and prevent cell membranes from being damaged. Piercing keeps 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.

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 8, a storage partition 7, a partition bracket 6, 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 invention, fresh aquatic products are put into the storage partition 7 of the electric field generating device 4 earlier, then the electric field generating device 4 is put into the cold storage or freezer 5, and the temperature is adjusted to the slightly frozen state (-3 ℃ to -5℃) 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 1, the waveform and frequency of the output alternating signal are selected. Then adjust the voltage regulating knob of the high-frequency variable ratio adjustable transformer 2 to adjust the voltage value between the two pole plates, and finally form a certain electric field superposition between the two pole plates 10 . The adjustment of the electric field intensity range can be realized by adjusting the length of the separator 7. If the length of the separator 7 is selected to be 200mm, and the maximum voltage between the two pole plates 10 is 3000V, the electric field intensity can be adjusted within the range of 0-1.5WV/m. The length of the plate 7 is 100mm, and the maximum voltage between the two pole plates 10 is 3000V, then the electric field strength can be adjusted in the range of 0-3WV/m. The intensity can be adjusted within the range of 0-1WV/m.

Claims (7)

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. It is characterized in that the output of the program-controlled broadband multi-waveform signal generator is different The AC signal of frequency and waveform is boosted by the high-frequency variable ratio adjustable transformer to 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 resistor. Connect the electrode plate of the electric field generating device, and the other end is directly connected to the other electrode plate of the electric field generating device; use the electric field generating device to superimpose the electric field on the aquatic product, so that the cells of the aquatic product will vibrate slightly, so as to achieve the aquatic product in a slightly frozen environment- Keep fresh without freezing at 3°C to -5°C. 2. The high-voltage alternating electric field aquatic product fresh-keeping device according to claim 1, characterized in that: the program-controlled broadband multi-waveform signal generator consists of a MAX038 function signal generation chip, a single-chip microcomputer and a peripheral D/A digital-to-analog conversion circuit Composition, the signal generator can automatically feedback the output signal to form a closed-loop control, and improve the accuracy of the output signal frequency. 3. The high-voltage alternating electric field fresh-keeping device for aquatic products according to claim 1, characterized in that: the high-frequency variable-ratio adjustable transformer outputs 0-3000V high-voltage alternating current, and the interior is mainly composed of a low-voltage variable-ratio adjustable transformer and a solid-state than high voltage step-up transformers. 4. The fresh-keeping device for aquatic products in a high-voltage alternating electric field according to claim 3, characterized in that the output voltage of the low-voltage variable ratio adjustable transformer is adjusted to 0-220V. 5. The fresh-keeping device for aquatic products in a high-voltage alternating electric field according to claim 4, wherein the fixed-ratio high-voltage step-up transformer adopts a 220V to 3000V solid-ratio booster. 6. The high-voltage alternating electric field fresh-keeping device for aquatic products according to claim 1, characterized in that: the inside of the safety resistor is composed of a high-resistance resistor and a leakage protector in series, and the current is controlled at a safe value for the human body within range. 7. The high-voltage alternating electric field fresh-keeping device for aquatic products according to claim 1, characterized in that: 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 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 electrode plates, and the middle is full of through holes, which is convenient for freezing and thawing aquatic products. water flows out.