阅读说明：本技术 用于食品速冻、解冻或保鲜的高压变频诱导器及装置 (For fast food freezing, defrosting or fresh-keeping high-pressure frequency-conversion persuader and device ) 是由 刘爽 姜文超 于 2019-08-30 设计创作，主要内容包括：本发明公开了一种用于食品速冻、解冻或保鲜的高压变频诱导器及装置,该高压变频诱导器产生高压变频电场,待速冻、解冻或者保鲜的一种、两种或者多种食物置于该高压变频电场中,不同食物内的水分子在相应的电场频率下产生共振。本发明通过高压变频诱导器产生高压变频电场,电场的自动快速变频可确保不同的食材都能够达到频率共振所需要的频率电场,从而使得速冻、解冻或保鲜的效果最佳。(The invention discloses a kind of for fast food freezing, defrosting or fresh-keeping high-pressure frequency-conversion persuader and device, the high-pressure frequency-conversion persuader generates high-pressure frequency-conversion electric field, it is placed in the high-pressure frequency-conversion electric field to quick-frozen, defrosting or fresh-keeping a kind of, two kinds or more of foods, the hydrone in different foods generates resonance under corresponding electric field frequency.The present invention generates high-pressure frequency-conversion electric field by high-pressure frequency-conversion persuader, and the automatic fast frequency shift of electric field can ensure that different food materials can reach frequency electric required for frequency resonance, so that quick-frozen, defrosting or fresh-keeping effect are best.)

1. a kind of for fast food freezing, defrosting or fresh-keeping high-pressure frequency-conversion persuader, which is characterized in that the high-pressure frequency-conversion persuader High-pressure frequency-conversion electric field is generated, is placed in the high-pressure frequency-conversion electric field to quick-frozen, defrosting or fresh-keeping a kind of, two kinds or more of foods In, the hydrone in different foods generates resonance under corresponding electric field frequency.

2. according to claim 1 be used for fast food freezing, defrosting or fresh-keeping high-pressure frequency-conversion persuader, which is characterized in that The high-pressure frequency-conversion persuader includes sequentially connected current rectifying and wave filtering circuit, DC-AC conversion circuit, booster circuit and electrode Plate；The input terminal of the current rectifying and wave filtering circuit is power input；The high-pressure frequency-conversion persuader further includes microprocessor, Yi Jiyu The variable frequency drive of microprocessor connection, variable frequency drive and DC-AC conversion circuit connection；

The voltage of power input obtains DC voltage by current rectifying and wave filtering circuit, converts and strikes a bargain through DC-AC translation circuit Stream controls the power frequency of DC-AC conversion circuit by variable frequency drive, required for being increased to using booster circuit High-voltage AC signal, high-voltage AC signal is converted into high-pressure frequency-conversion electric field finally by electrode plate.

3. according to claim 1 or 2 exist for fast food freezing, defrosting or fresh-keeping high-pressure frequency-conversion persuader, feature In the frequency separation of high-pressure frequency-conversion electric field is 40-80Hz.

4. according to claim 2 be used for fast food freezing, defrosting or fresh-keeping high-pressure frequency-conversion persuader, which is characterized in that Wherein, sample circuit is also connected between microprocessor and booster circuit, which carries out the electric current that booster circuit exports Sampling with high precision, and sampled signal is transmitted to microprocessor；At variation judgement of the microprocessor according to electric current in sampled signal It perhaps frequency range and is issued according to the food resonant frequency or frequency range corresponding in the food resonant frequency in electric field Signal is controlled, the work of DC-AC conversion circuit is controlled in specific frequency or frequency range by variable frequency drive.

5. according to claim 2 be used for fast food freezing, defrosting or fresh-keeping high-pressure frequency-conversion persuader, which is characterized in that The high-pressure frequency-conversion persuader further includes human-body safety current-limiting circuit, is connected between booster circuit and electrode plate, human body peace Full current-limiting circuit is by the output current limit of booster circuit in the range of to no damage to human body.

6. according to claim 2 be used for fast food freezing, defrosting or fresh-keeping high-pressure frequency-conversion persuader, which is characterized in that The input of power input connection electric main, threephase AC electric energy input, by transformer AC energy input or The direct current energy of free voltage inputs.

7. according to claim 6 be used for fast food freezing, defrosting or fresh-keeping high-pressure frequency-conversion persuader, which is characterized in that The DC-AC conversion circuit includes semiconductor devices and filter circuit, and the combination of semiconductor devices includes that half-bridge is inverse Power transformation road or full bridge inverter；Semiconductor devices includes triode, silicon-controlled device, IGBT or MOSFET.

8. fast food freezing, defrosting or fresh-keeping high-pressure frequency-conversion persuader are used for according to any one of claim 4-7, It is characterized in that, the sample mode of the sample circuit is the sampling of voltage Hall, current Hall sampling, voltage transformer sampling, electricity Current transformer sampling, electric resistance partial pressure sampling in any one.

9. a kind of fast food freezing, defrosting or preservation device, which is characterized in that placed in the device any such as claim 1,2, High-pressure frequency-conversion persuader described in any one of 4-8.

10. a kind of high-pressure frequency-conversion persuader as described in any one of claim 1,2,4-8 fast food freezing, defrosting, it is fresh-keeping, Application in refrigeration, refrigerating plant.

Technical field

The present invention relates to field of food preservation more particularly to a kind of for fast food freezing, defrosting or fresh-keeping high-pressure frequency-conversion Persuader and device.

Background technique

During traditional food fresh-keeping, protein and plant fiber are easy in hydrone and cell in active state Separation, nutrition are easy to run off (mainly due to the respiration of cell itself), and weight is easily lost, and the food fresh-keeping time is not grown (due to the activity of the microorganisms such as bacterium, being easy food putrid and deteriorated).Tradition freezing refer to by food put at low ambient temperatures, by Outer and interior, slow freezing process.In this process, the moisture in food is formed sharp ice crystal and is spread around, thorn Breaking cell wall, food texture are destroyed, and cell liquid also flows out therewith.And in traditional course of defrosting, food is by external inside Portion gradually thaws from level to level.In this process, due to the bad thermal conductivity of hydrone after thawing, thawing rate can be gradually Slack-off, the spent time of thawing completely is very long.The moisture of food and nutrition can be also largely lost.

Summary of the invention

The technical problem to be solved in the present invention is that for being easy in food fresh keeping in the prior art, freezing, course of defrosting The moisture of food and nutrition are easy the defect being largely lost, and food freshness can be kept by providing one kind, and nutrition is prevented to be lost, That reduces loss in weight is used for fast food freezing, defrosting or fresh-keeping high-pressure frequency-conversion persuader and device.

The technical solution adopted by the present invention to solve the technical problems is:

It provides a kind of for fast food freezing, defrosting or fresh-keeping high-pressure frequency-conversion persuader, high-pressure frequency-conversion persuader generation High-pressure frequency-conversion electric field is placed in the high-pressure frequency-conversion electric field to quick-frozen, defrosting or fresh-keeping a kind of, two kinds or more of foods, Hydrone in different foods generates resonance under corresponding electric field frequency.

Above-mentioned technical proposal is connect, which includes sequentially connected current rectifying and wave filtering circuit, DC-AC change Change circuit, booster circuit and electrode plate；The input terminal of the current rectifying and wave filtering circuit is power input；The high-pressure frequency-conversion persuader It further include microprocessor, and the variable frequency drive being connect with the microprocessor, variable frequency drive and DC-AC conversion Circuit connection；

The voltage of power input obtains DC voltage by current rectifying and wave filtering circuit, converts through DC-AC translation circuit At exchange, the power frequency of DC-AC conversion circuit is controlled by variable frequency drive, is increased to institute using booster circuit High-voltage AC signal is converted into high-pressure frequency-conversion electric field finally by electrode plate by the high-voltage AC signal needed.

Above-mentioned technical proposal is connect, the frequency separation of high-pressure frequency-conversion electric field is 40-80Hz.

Above-mentioned technical proposal is connect, sample circuit is also connected between microprocessor and booster circuit, the sample circuit is to boosting The electric current of circuit output carries out sampling with high precision, and sampled signal is transmitted to microprocessor；Microprocessor is according to sampled signal Food resonant frequency of the variation judgement of middle electric current in the electric field perhaps frequency range and according to the food resonant frequency or Frequency range issues corresponding control signal, controls the work of DC-AC conversion circuit in specific frequency by variable frequency drive Rate or frequency range.

Above-mentioned technical proposal is connect, which further includes human-body safety current-limiting circuit, is connected to boosting electricity Between road and electrode plate, by the output current limit of booster circuit in the range of to no damage to human body.

Above-mentioned technical proposal is connect, the power input connection electric main input, threephase AC electric energy input, by becoming The AC energy of depressor inputs or the input of the direct current energy of free voltage.

Connect above-mentioned technical proposal, the control of inverter drive signal of the DC-AC conversion circuit in variable frequency drive Under system, direct current energy is transformed to the adjustable AC energy of amplitude, phase angle, frequency.

Above-mentioned technical proposal is connect, the DC-AC conversion circuit includes semiconductor devices and filter circuit, semiconductor device The combination of part includes half-bridge inversion circuit or full bridge inverter；Semiconductor devices include triode, silicon-controlled device, IGBT or MOSFET.

Above-mentioned technical proposal is connect, the sample mode of the sample circuit is the sampling of voltage Hall, current Hall sampling, voltage Mutual inductor sample, current transformer sampling, electric resistance partial pressure sampling in any one.

The present invention also provides a kind of fast food freezing, defrosting or preservation device, any above-mentioned technology is placed in the device High-pressure frequency-conversion persuader in scheme.

The present invention also provides a kind of high-pressure frequency-conversion persuaders of above-mentioned technical proposal in fast food freezing, defrosting, fresh-keeping, cold Application in hiding, refrigerating plant.

The beneficial effect comprise that: the present invention generates high-pressure frequency-conversion electric field, electric field by high-pressure frequency-conversion persuader Automatic fast frequency shift can ensure that different food materials can reach frequency electric required for frequency resonance so that fast Jelly, defrosting or fresh-keeping effect are best.

High-pressure frequency-conversion persuader of the invention can be placed directly in existing fast food freezing, defrosting or fresh-keeping dress as needed In setting, for improving fast food freezing, defrosting or the fresh-keeping effect of original device, realize it is long-term keep food freshness, prevent nutrition at Part is lost, and reduces the function of loss in weight.

Detailed description of the invention

Present invention will be further explained below with reference to the attached drawings and examples, in attached drawing:

Fig. 1 is that structure of the first embodiment of the invention for fast food freezing, defrosting or fresh-keeping high-pressure frequency-conversion persuader is shown It is intended to；

Fig. 2 is that structure of the second embodiment of the invention for fast food freezing, defrosting or fresh-keeping high-pressure frequency-conversion persuader is shown It is intended to；

Fig. 3 is that structure of the third embodiment of the invention for fast food freezing, defrosting or fresh-keeping high-pressure frequency-conversion persuader is shown It is intended to；

Fig. 4 is the structural schematic diagram of flexible electrical pole plate of the embodiment of the present invention；

Fig. 5 is the high-pressure frequency-conversion persuader that the embodiment of the present invention is mounted with cascade flexible electrical pole plate.

Specific embodiment

In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not For limiting the present invention.

High-pressure frequency-conversion persuader of the invention can produce high-pressure frequency-conversion electric field, and high-pressure frequency-conversion electric field energy acts on molecule, Molecular activity is improved, heat exchange is accelerated, accelerates freeze/thaw speed, freeze/thaw is uniform, -5 under high-pressure frequency-conversion electric field environment DEG C water does not freeze；High-pressure frequency-conversion electric field energy acts on bacterium and cell, generates bioelectricity and directly inhibits bacterium and cell activity, It is putrid and deteriorated greatly to slow down food materials, reduces cellular respiration, promotes mouthfeel；High-pressure frequency-conversion electric field energy ionized air generation bear from Son and ozone inhibit bacterial activity, it is putrid and deteriorated to slow down food materials indirectly.

It is placed in high-pressure frequency-conversion electric field of the invention to quick-frozen, defrosting or fresh-keeping a kind of, two kinds or more of foods, Hydrone in different foods generates resonance under corresponding electric field frequency.Since different food materials are in different electric field frequencies Under, it is different by effect that is fresh-keeping, being defrosted, be frozen, it is attained by optimum efficiency in order to be adapted to different food materials, this The high-pressure frequency-conversion persuader of invention can quick frequency conversion automatically, so that it is guaranteed that required for different food materials can access itself Frequency electric field so that fast food freezing, defrosting or fresh-keeping effect are best.

When fast food freezing, food is placed in high-pressure frequency-conversion electric field of the invention, resonance of the hydrone in electron synchrotron frequency In environment, crystalline solid can become tiny mellow and full, and water molecules mode changes, and can utmostly reduce food cell wall by acute angle Ice crystal punctures, and to keep food freshness, nutrition is prevented to be lost, and reduces loss in weight.Obtaining high-quality quick-frozen food Meanwhile of the invention electrostatic is quick-frozen also overwhelms traditional freezing method on the freezing deadline with absolute predominance, reduces simultaneously The consumption of the energy.Experimental data shows that similar two pieces of meat products realize freezing completely, makees in high-pressure frequency-conversion persuader of the present invention With respect to conventional freezing processes, time-consuming at least reduces by more than 50 quick-frozen process under.

When food defrosting, food is placed in high-pressure frequency-conversion electric field of the invention, it can be achieved that high-pressure frequency-conversion electrostatic induction Under exquisite thaw.In course of defrosting, electrostatic force promotes hydrone vivaciously to move, and hydrone thus increases friction to each other Collision accelerates to be transformed into liquid by solid-state ice crystal, while shortening thawing time, still hydrone is stored in food. It is observation object with the meat of identical freezing conditions, is mainly distinguished in terms of color texture, nutrition, health and energy conservation four. The meat clean mark that high-pressure frequency-conversion persuader electrostatic thaws, texture are uniform through the invention；The degree that cell tissue is destroyed Minimum, diffusate is few, and nutrition saves more complete；And food is chronically in stable low temperature environment, can inhibit bacterium Breeding.In addition, electrostatic of the invention, which thaws, at least reduces half than tradition defrosting time-consuming, it is energy saving and time saving.

When food fresh keeping, generate special electrostatic wave in high-pressure frequency-conversion electric field environment of the invention, allow its in food materials Hydrone generates resonance, and 70% or more of food is made of hydrone, and activation hydrone is equal to active cell.Resonance When, protein and plant fiber are not easily separate in hydrone and cell in active state, cell persistently keeps completely living Jump state, to making food that " fresh and alive life " can be kept to reach food fresh-keeping for a long time.Watery blood loss can be reduced simultaneously, kept The freshness and nutrition of food.Ozone caused by high-pressure electrostatic ionized air is strong oxidizer, can be sterilized, and improves food and resists The ability of microorganism, to extend the shelf-life of food.

As shown in Figure 1, the high-pressure frequency-conversion persuader of first embodiment of the invention includes sequentially connected current rectifying and wave filtering circuit 10, DC-AC conversion circuit 20, booster circuit 30 and electrode plate 40；The input terminal of current rectifying and wave filtering circuit 10 is power input End；The high-pressure frequency-conversion persuader further includes microprocessor 50, and the variable frequency drive 60 connecting with the microprocessor 50, is become Frequency driving circuit 60 is connect with DC-AC conversion circuit 20；

The voltage of power input obtains DC voltage by current rectifying and wave filtering circuit 10, becomes through DC-AC translation circuit It changes exchange into, the power frequency of DC-AC conversion circuit 20 is controlled by variable frequency drive 60, using booster circuit 30 It is increased to required high-voltage AC signal, high-voltage AC signal is converted into high-pressure frequency-conversion electric field finally by electrode plate 40.

In order to cover the resonant frequency of most foods internal water molecule, the frequency separation of high-pressure frequency-conversion electric field of the present invention is 40—80Hz.Preferably, 50Hz.Certainly, in order to further contemplate that more foods, frequency separation can be expanded into 20- 3000Hz。

As shown in Fig. 2, the high-pressure frequency-conversion persuader of second embodiment of the invention, is established on the basis of first embodiment On.Increase sample circuit 70 between microprocessor 50 and booster circuit 30, which exports booster circuit 30 Electric current carries out sampling with high precision, and sampled signal is transmitted to microprocessor 50；Microprocessor 50 is according to electric current in sampled signal Food resonant frequency or frequency range of the variation judgement in the electric field, and phase is issued according to the food resonance frequency range The control signal answered controls the work of DC-AC conversion circuit 20 in particular frequency range by variable frequency drive 60.If Only a kind of food is placed in the electric field, can just directly obtain the resonant frequency of the food, then can control DC-AC change The work of circuit 20 is changed in the specific frequency.Food is under the alternating electric field environment of high-pressure frequency-conversion persuader of the present invention generation, when When electric field frequency and food intrinsic frequency are close, under extraneous electric field excitation, food generates resonance, and the resonance of food needs electric field Energy is provided, so high-pressure frequency-conversion persuader output electric current of the invention increases, and microprocessor 50 is by adopting in food resonance Sample circuit 70 may determine that food intrinsic frequency and output frequency be set to resonance point when collecting output electric current increase.In Just start to work when, microprocessor 50 can control high-pressure frequency-conversion persuader first work under frequency sweep mode, current variation value most When big, a kind of intrinsic frequency of food can be corresponded to.When the intrinsic frequency or frequency for after a period of work, that is, determining food After range (when a variety of foods), microprocessor 50 can control high-pressure frequency-conversion persuader in fixed frequency modes or certain frequency model It works under boxing formula.

It is required if you need to reach optimal defrosting/freezing/fresh-keeping effect when the food species in electric field are different Electric field frequency can difference.That is different food can generate one and electric field being total to frequency at different frequencies Vibration, can be only achieved optimal defrosting/freezing/fresh-keeping effect.It will cause when after same food is put into electric field in different frequency The minor differences of boosting portion of electrical current, after which is monitored electric current by sample circuit 70, pass through analysis The variation of electric current automatically adjusts and locks optimal Frequency point, the drive of frequency required for then issuing by microprocessor 50 Dynamic signal is exported to variable frequency drive 60, is regulated and controled to DC-AC conversion circuit 20.To realize different food When being put into electrode plate 40 and being formed by frequency conversion electric field, can be defrosted/freeze under optimal frequency/fresh-keeping.

In order to which the electric field for allowing high-pressure frequency-conversion persuader to generate is harmless, as shown in figure 3, third embodiment of the invention High-pressure frequency-conversion persuader further includes human-body safety current-limiting circuit 80, which establishes real in first embodiment or second It applies on the basis of example.Human-body safety current-limiting circuit 80 is connected between booster circuit 30 and electrode plate 40, and the human body limits safely Current circuit 80 is by the output current limit of booster circuit 30 in the range of to no damage to human body.Human-body safety in the embodiment Ductility limit circuit 80 can will export current limit in harmless safety electricity by modes such as resistance or resettable fuses Within stream.High-pressure frequency-conversion persuader of the invention loads almost zero load, therefore human-body safety current limliting when generating high voltage electric field Circuit 80 will not influence the normal work of high-pressure frequency-conversion persuader.

In above three embodiments, the power input of exchange or direct current is the energy source of high-pressure frequency-conversion persuader, is High-pressure frequency-conversion persuader provides electric energy and supports.The power input of exchange or direct current includes but are not limited to: electric main input The input of (220V, 110V etc.), threephase AC electric energy, inputted etc. by the AC energy of transformer the input of any alternate electric energy and The direct current energy of free voltage inputs.

The AC energy of input and unstable direct current energy can be transformed to stable direct current by current rectifying and wave filtering circuit 10 Electric energy provides the electric energy of stable high-quality amount for high-pressure frequency-conversion persuader.It is whole that rectification circuit includes but are not limited to diode full-bridge Stream, diode halfwave rectifier, thyristor full-bridge phase control rectifier, thyristor halfwave rectifier etc. are the electricity of direct current ac-dc conversion Road；Filtering mode includes but are not limited to the passive filtering being made of inductive resistance capacitance or the filtered electrical of other active passives Road.

DC-AC conversion circuit 20 includes controllable semiconductor devices, filter circuit, in the control of inverter drive signal Under, direct current energy is transformed to the adjustable AC energy of amplitude, phase angle, frequency.The combination of semiconductor includes but not only limits In half-bridge inversion circuit, full bridge inverter；Semiconductor devices include but are not limited to triode, silicon-controlled device, IGBT, The semiconductor devices such as MOSFET；Filter circuit include but are not limited to the passive filter circuit being made of inductive resistance capacitance or its The filtering mode of his active passive.

The AC energy of low-voltage can be transformed to the AC energy of high voltage by booster circuit 30 by transformer, for outside High-voltage alternating electric field provides high-voltage alternating electric energy.

The voltage and current of 30 input and output of booster circuit is transformed to what microprocessor 50 can identify by sample circuit 70 Signal, the sample mode of sample circuit 70 includes but is not limited to the sampling of voltage Hall, current Hall samples, voltage transformer is adopted The sample modes such as sample, current transformer sampling, electric resistance partial pressure sampling.

Microprocessor 50 can be controlled by external control port, include but are not limited to RS232, RS485, light The communication modes such as fibre, CAN, Ethernet, radio frequency are communicated with microprocessor 50 by external control port, and then can change friendship Become the parameters such as amplitude and the frequency of high voltage electric energy.

On the basis of above three embodiments, one working status indication can also be set for high-pressure frequency-conversion persuader Device includes but are not limited to the acoustooptics such as LED light, liquid crystal screen displays, buzzer, to carry out high-pressure frequency-conversion persuader work State is shown, makes it as the man-machine interface for the working condition for making user know high-pressure frequency-conversion persuader.Mode indicator The content that can be shown includes but are not limited to: power supply status, operating status, malfunction (error code).

Microprocessor 50 be arranged by external control port and save user needs alternation high voltage electric energy parameter, pass through by The sampled signal of sample circuit 70 is converted, and the input and output voltage and electric current of actual transformer are calculated；According to calculating As a result driving signal is generated, control DC-AC conversion electric current is gone by variable frequency drive 60；It is final to realize booster circuit 30 The high-voltage alternating electric field of output is consistent with the parameter of default or external control port setting, and passes through working status indication simultaneously Device tells the various states of user's high-pressure frequency-conversion persuader.

The inverter drive signal that semiconductor devices cannot be driven to work that variable frequency drive 60 generates microprocessor 50, By way of being isolated or not being isolated, it is transformed to the signal that phase is identical or semiconductor devices can be driven to work on the contrary.

The alternation high voltage electric energy that high-pressure frequency-conversion persuader of the invention generates acts between the electrode plate 40 being placed in parallel, Generate alternation high-voltage field.Electrode plate 40 includes but are not limited to the conductions such as metal polar plate, coat of metal pole plate, carbon film coating pole plate Pole plate made of material.

Further, the occasions of some surface curvatures is adapted in order to facilitate electrode plate, electrode plate can be made as flexibility Electrode plate.In order to be applicable in different applications, conductor adapting piece, different flexible electrodes can be set at the edge of flexible electrical pole plate By conductor adapting piece cascade, it can be achieved that the arbitrary extension of area between plate.As shown in figure 4, flexible electrical pole plate includes conductive clip Layer 2, the fixed insulating panel 1 of the one side of the conducting interlayer, the fixed insulating film 3 of another side.Conductor is arranged on flexible electrical pole plate to connect Part 4, any two flexible electrical pole plate are cascaded by the conductor adapting piece 4.

Further, insulating film 3 can be the insulating film with gum, and it is thin to have gum protection outside the gum of the insulating film Film.Flexible electrical pole plate can be arbitrarily attached to the position of needs by gum protective film of tearing.

Conductor adapting piece can be set to the form of conductor button, mutually be fastened by conductor button.In flexible electrical pole plate An edge female thread is set, pin thread or female thread, the setting of pin thread interval is arranged in another edge, as long as facilitating different flexibilities The connection of electrode plate grade.

As shown in figure 5, to use the high-pressure frequency-conversion persuader of cascade flexible electrical pole plate.

High-pressure frequency-conversion persuader of the invention can be realized in several ways, however it is not limited to institute in the embodiment of the present invention The method enumerated.

Fast food freezing, defrosting or the preservation device of the embodiment of the present invention, wherein placing the high pressure of any above-described embodiment Frequency conversion induction device, for improving fast food freezing, defrosting, fresh-keeping, refrigeration or freezing.

Specifically, the high-pressure frequency-conversion persuader of above-mentioned each embodiment is placed in refrigerator, refrigerator or antistaling cabinet etc. (numerous to list herein), plugging in directly to work, and can substantially improve the property of refrigerator, refrigerator or antistaling cabinet itself Can, the preferably moisture in latching food and nutrition.One or two can be placed as needed even more than high-pressure frequency-conversion Persuader works at the same time.Or place the high-pressure frequency-conversion persuader for having cascaded multiple electrodes plate.

To sum up, the present invention generates high-pressure frequency-conversion electric field by high-pressure frequency-conversion persuader, and the automatic fast frequency shift of electric field can be true Frequency electric required for frequency resonance can be reached by protecting different food materials, so that quick-frozen, defrosting or fresh-keeping effect Most preferably.And high-pressure frequency-conversion persuader can be placed directly in as needed in existing fast food freezing, defrosting or preservation device, be used for Improve fast food freezing, defrosting or the fresh-keeping effect of original device, realizes long-term holding food freshness, prevent nutrition to be lost, subtract The function of few loss in weight.

It should be understood that for those of ordinary skills, it can be modified or changed according to the above description, And all these modifications and variations should all belong to the protection domain of appended claims of the present invention.