CN111165555A - High-humidity low-temperature radio frequency unfreezing system - Google Patents
High-humidity low-temperature radio frequency unfreezing system Download PDFInfo
- Publication number
- CN111165555A CN111165555A CN202010079749.5A CN202010079749A CN111165555A CN 111165555 A CN111165555 A CN 111165555A CN 202010079749 A CN202010079749 A CN 202010079749A CN 111165555 A CN111165555 A CN 111165555A
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- Prior art keywords
- radio frequency
- thawing
- nozzle
- water tank
- temperature
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Links
- 238000010257 thawing Methods 0.000 claims abstract description 46
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000000463 material Substances 0.000 claims abstract description 25
- 238000005057 refrigeration Methods 0.000 claims abstract description 18
- 238000010438 heat treatment Methods 0.000 claims abstract description 11
- 230000005494 condensation Effects 0.000 claims abstract description 4
- 238000009833 condensation Methods 0.000 claims abstract description 4
- 238000001704 evaporation Methods 0.000 claims description 3
- 230000008020 evaporation Effects 0.000 claims 1
- 239000000796 flavoring agent Substances 0.000 abstract description 4
- 235000019634 flavors Nutrition 0.000 abstract description 4
- 239000003595 mist Substances 0.000 abstract description 3
- 235000013372 meat Nutrition 0.000 description 8
- 230000007547 defect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005034 decoration Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000570 Cupronickel Inorganic materials 0.000 description 1
- 206010037660 Pyrexia Diseases 0.000 description 1
- 241000282898 Sus scrofa Species 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- YOCUPQPZWBBYIX-UHFFFAOYSA-N copper nickel Chemical compound [Ni].[Cu] YOCUPQPZWBBYIX-UHFFFAOYSA-N 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 235000013622 meat product Nutrition 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000011573 trace mineral Substances 0.000 description 1
- 235000013619 trace mineral Nutrition 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
- A23B4/00—General methods for preserving meat, sausages, fish or fish products
- A23B4/06—Freezing; Subsequent thawing; Cooling
- A23B4/07—Thawing subsequent to freezing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F6/00—Air-humidification, e.g. cooling by humidification
- F24F6/12—Air-humidification, e.g. cooling by humidification by forming water dispersions in the air
- F24F6/14—Air-humidification, e.g. cooling by humidification by forming water dispersions in the air using nozzles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- Combustion & Propulsion (AREA)
- Dispersion Chemistry (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Freezing, Cooling And Drying Of Foods (AREA)
Abstract
The invention discloses a high-humidity low-temperature radio frequency thawing system, and aims to provide a thawing system which is environment-friendly, high in efficiency and high in safety level. The device comprises a thawing box, a refrigeration cycle unit, a humidification unit and a radio frequency heating unit; an evaporator of the refrigeration cycle unit is arranged at the upper part in the thawing box, and a material platform is arranged at the lower part in the thawing box; the radio frequency heating unit comprises a radio frequency power supply module, and a positive plate and a negative plate which are respectively connected to the output end of the radio frequency power supply module, wherein the positive plate and the negative plate are arranged on two sides of the material table in parallel; the humidifying unit comprises a water tank, a pneumatic fan and a nozzle, and the condenser is arranged in the water tank; the nozzle is arranged at the lower part of the evaporator in the thawing box, and the air outlet of the water tank and the pneumatic fan are sequentially connected with the nozzle. The system utilizes the condensation heat of the refrigeration system to heat water in the water tank, so that the water mist sprayed into the unfreezing tank has certain temperature, the unfreezing speed is accelerated, the utilization rate of energy is improved, the surface of the material is prevented from being slightly dry, and the flavor of the material is better.
Description
Technical Field
The invention relates to the technical field of unfreezing, in particular to a high-humidity low-temperature radio frequency unfreezing system.
Background
With the occurrence of swine fever and the influence on meat production in China, the mode of meat products is changed from 'production and marketing unification' to 'production and marketing separation', which means that fresh meat is reduced, frozen meat is increased, and the thawing technology of meat needs to be greatly developed.
At present, in the research on meat thawing, patent document 201821234781.0 entitled "a frozen meat fresh-keeping thawing warehouse" discloses thawing equipment, which comprises a thawing warehouse body and an air heater, wherein a goods shelf is arranged in the thawing warehouse body and mainly used for thawing by hot air, and heat is concentrated at a certain part in the process of thawing by hot air, so that the quality of the thawed meat is influenced. And other thawing techniques also have the problems of more pyrolysis liquid, large mass loss, uneven heating, poor meat quality in thawing and the like.
Disclosure of Invention
The invention aims to provide the high-humidity low-temperature radio frequency thawing system which is environment-friendly, high in efficiency and high in safety level aiming at the technical defects in the prior art.
The technical scheme adopted for realizing the purpose of the invention is as follows:
a high-humidity low-temperature radio frequency thawing system comprises a thawing box, a refrigeration cycle unit, a humidification unit and a radio frequency heating unit; an evaporator of the refrigeration cycle unit is arranged at the upper part in the thawing box, and a material platform is arranged at the lower part in the thawing box; the radio frequency heating unit comprises a radio frequency power supply module, and a positive plate and a negative plate which are respectively connected to the output end of the radio frequency power supply module, wherein the positive plate and the negative plate are arranged on two sides of the material table in parallel; the humidifying unit comprises a water tank, a pneumatic fan and a nozzle, and the condenser is arranged in the water tank; the nozzle is arranged at the lower part of the evaporator in the thawing box, and the air outlet of the water tank and the pneumatic fan are sequentially connected with the nozzle.
The condensing temperature of the condenser in the refrigeration cycle unit is 60-75 ℃, and the evaporating temperature of the evaporator is-5-0 ℃.
The size of the positive plate and the negative plate is the same as the size of the material parallel to the surfaces of the positive plate and the negative plate.
The refrigeration cycle unit is a closed cycle consisting of a compressor, the condenser, a throttling element and the evaporator.
The nozzle is an atomizing nozzle.
Compared with the prior art, the invention has the beneficial effects that:
1. the defrosting system of the invention utilizes the condensation heat of the refrigeration system in summer to heat the water in the water tank, so that the water mist sprayed into the defrosting tank has certain temperature, thereby not only accelerating the defrosting speed, but also improving the utilization rate of energy. The defect that the unfrozen surface is slightly dry in the traditional radio frequency unfreezing technology can be avoided, and the flavor of the material is better.
2. The thawing system provided by the invention realizes thawing by adopting radio frequency heating, has good heating uniformity and higher speed, can greatly shorten thawing time, and simultaneously remarkably reduces water dispersion and trace element loss, and has better smell and flavor of materials. Moreover, no wastewater is generated during radio frequency thawing, microorganisms cannot invade materials through water, and the method is energy-saving, environment-friendly, higher in material quality and safer.
Drawings
Fig. 1 is a schematic diagram of a high-humidity low-temperature rf thawing system according to the present invention.
Detailed Description
The invention is described in detail below with reference to the figures and specific examples.
The high-humidity low-temperature radio frequency thawing system of the invention is shown in figure 1, and comprises a thawing box 5, a refrigeration cycle unit, a humidification unit and a radio frequency heating unit. An evaporator 6 of the refrigeration cycle unit is installed at the upper part in the thawing box 5, and a material table is arranged at the lower part in the thawing box 5. The radio frequency heating unit comprises a radio frequency power supply module, a positive plate 3 and a negative plate 4, wherein the positive plate 3 and the negative plate 4 are respectively connected to the output end of the radio frequency power supply module, the positive plate is connected with the positive pole of the radio frequency power supply module, the negative plate is connected with the negative pole of the radio frequency power supply module, the positive plate 3 and the negative plate 4 are arranged on two sides of the material table in parallel, and an alternating electromagnetic field formed between the positive plate 3 and the negative plate 4 vertically acts on the. The humidifying unit comprises a water tank 8, a pneumatic fan 10 and a nozzle 12, and the condenser 9 is arranged in the water tank 8. The nozzle 12 is arranged at the lower part of the evaporator 6 in the thawing box, and the air outlet of the water tank 8 and the pneumatic fan 10 are sequentially connected with the nozzle 12. The nozzle adopts a copper-nickel or stainless steel micro atomizing nozzle which can adjust the atomizing water quantity, is not worn and has small pressure loss.
Thermal uniformity is best when the positive and negative plates 3, 4 are the same size as the material parallel to their surfaces. The optimal height of the positive plate and the negative plate and the distance between the two electrode plates are selected according to specific materials so as to obtain the material with the optimal quality in the shortest time.
The condensing temperature of the condenser 9 in the refrigeration cycle unit is 60-75 ℃, and the evaporating temperature of the evaporator 6 is-5-0 ℃.
The refrigeration cycle unit employs a conventional technique, and the present embodiment is a closed cycle composed of a compressor 11, a condenser 9, a throttling element 7, and an evaporator 6.
In this embodiment, the rf power module includes a dc power device 2 and a voltage regulator 1, and the dc power device 2 is connected to an ac power source through the voltage regulator 1.
When the high-humidity low-temperature unfreezing system runs, materials are placed on a material table of the unfreezing box 5, a power supply is switched on, alternating current is converted into direct current through the voltage adjusting device 1, the direct current power supply device 2 is connected with the positive plate and the negative plate which are arranged on two sides of the unfreezing box, and an electric field which is constantly alternated is generated between the positive plate and the negative plate to enable polar molecules in the materials to rotate, so that the molecules rub and collide with each other to generate heat, the temperature of the materials is increased, and the unfreezing effect is achieved. At the same time, the compressor 11 is turned on, and the refrigerant flows through the condenser 9, throttled by the throttling element 7, enters the evaporator 6, absorbs heat, evaporates, and returns to the compressor. A condenser 9 is placed in the water tank 8, and water is used as a coolant of the refrigeration cycle to condense heat to heat the water in the water tank. By utilizing the wind power effect, the water vapor in the water tank enters the nozzle 12 through the pneumatic fan 10 and is sprayed into the thawing tank, and the calculation of the spraying water quantity ensures that the requirements of the thawed material for the best quality can be met, and the problems of heat value loss, bottom water accumulation and the like caused by overlarge total water quantity of the thawing tank can be avoided.
The high-humidity low-temperature unfreezing system utilizes the condensation heat of the refrigeration system in summer to heat water in the water tank, so that the water mist sprayed into the unfreezing tank has a certain temperature, the unfreezing speed is accelerated, the energy utilization rate is improved, the safety level is high, and the requirement of sustainable development is met. Meanwhile, the defect that the unfrozen surface is slightly dry in the traditional radio frequency unfreezing technology can be avoided, and the flavor of the material is better.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (5)
1. A high-humidity low-temperature radio frequency thawing system is characterized by comprising a thawing box, a refrigeration cycle unit, a humidification unit and a radio frequency heating unit; an evaporator of the refrigeration cycle unit is arranged at the upper part in the thawing box, and a material platform is arranged at the lower part in the thawing box; the radio frequency heating unit comprises a radio frequency power supply module, and a positive plate and a negative plate which are respectively connected to the output end of the radio frequency power supply module, wherein the positive plate and the negative plate are arranged on two sides of the material table in parallel; the humidifying unit comprises a water tank, a pneumatic fan and a nozzle, and the condenser is arranged in the water tank; the nozzle is arranged at the lower part of the evaporator in the thawing box, and the air outlet of the water tank and the pneumatic fan are sequentially connected with the nozzle.
2. The high-humidity low-temperature radio-frequency thawing system according to claim 1, wherein a condensation temperature of said condenser in said refrigeration cycle unit is 60-75 ℃ and an evaporation temperature of said evaporator is-5-0 ℃.
3. The high-humidity low-temperature radio-frequency thawing system according to claim 1 or 2, wherein the size of the positive and negative plates is the same as the size of the material parallel to the surface of the positive and negative plates.
4. The high humidity low temperature radio frequency thawing system according to claim 2, wherein said refrigeration cycle unit is a closed cycle consisting of a compressor, said condenser, a throttling element and said evaporator.
5. The high humidity low temperature radio frequency thawing system according to claim 1, wherein said nozzle is an atomizing nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010079749.5A CN111165555A (en) | 2020-02-04 | 2020-02-04 | High-humidity low-temperature radio frequency unfreezing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010079749.5A CN111165555A (en) | 2020-02-04 | 2020-02-04 | High-humidity low-temperature radio frequency unfreezing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111165555A true CN111165555A (en) | 2020-05-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010079749.5A Pending CN111165555A (en) | 2020-02-04 | 2020-02-04 | High-humidity low-temperature radio frequency unfreezing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111165555A (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19990005546A (en) * | 1997-06-30 | 1999-01-25 | 구자홍 | Refrigerator with food thawing function |
| CN201706831U (en) * | 2010-05-25 | 2011-01-12 | 天津大学 | Energy-saving constant-temperature constant-humid preserving refrigeratory system |
| CN202143432U (en) * | 2011-07-01 | 2012-02-15 | 浙江海洋学院 | Food unfreezing machine |
| CN203203293U (en) * | 2013-04-09 | 2013-09-18 | 刘文庆 | Refrigerating and heating system for air source heat pump |
| CN106052253A (en) * | 2016-05-30 | 2016-10-26 | 青岛海尔股份有限公司 | Refrigerator and unfreezing method for refrigerator |
| CN106264408A (en) * | 2015-05-13 | 2017-01-04 | 青岛海尔洗碗机有限公司 | Semi-conductor condensation drying device, dish-washing machine and condensation drying means |
| CN106858271A (en) * | 2017-03-29 | 2017-06-20 | 仲恺农业工程学院 | A kind of pump type heat low temperature and high relative humidity air thawing device |
| CN206586271U (en) * | 2016-12-12 | 2017-10-27 | 诸城市万利源机械科技有限公司 | A kind of high humidity low temperature thawing apparatus |
| CN208609803U (en) * | 2017-12-22 | 2019-03-19 | 潍坊汇和机械工程有限公司 | Low temperature and high relative humidity steam thawing equipment |
| CN208768875U (en) * | 2018-05-29 | 2019-04-23 | 四川北牧南江黄羊集团有限公司 | A kind of radio frequency thawing apparatus |
| CN209002754U (en) * | 2018-05-25 | 2019-06-21 | 海南力合泰食品有限公司 | A kind of meat defrosting device |
| CN110419562A (en) * | 2019-09-02 | 2019-11-08 | 四川长虹电器股份有限公司 | The changeable radio frequency thawing apparatus for accessing parallel plate suqare |
| CN211794089U (en) * | 2020-02-04 | 2020-10-30 | 天津商业大学 | High-humidity low-temperature radio frequency unfreezing system |
-
2020
- 2020-02-04 CN CN202010079749.5A patent/CN111165555A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19990005546A (en) * | 1997-06-30 | 1999-01-25 | 구자홍 | Refrigerator with food thawing function |
| CN201706831U (en) * | 2010-05-25 | 2011-01-12 | 天津大学 | Energy-saving constant-temperature constant-humid preserving refrigeratory system |
| CN202143432U (en) * | 2011-07-01 | 2012-02-15 | 浙江海洋学院 | Food unfreezing machine |
| CN203203293U (en) * | 2013-04-09 | 2013-09-18 | 刘文庆 | Refrigerating and heating system for air source heat pump |
| CN106264408A (en) * | 2015-05-13 | 2017-01-04 | 青岛海尔洗碗机有限公司 | Semi-conductor condensation drying device, dish-washing machine and condensation drying means |
| CN106052253A (en) * | 2016-05-30 | 2016-10-26 | 青岛海尔股份有限公司 | Refrigerator and unfreezing method for refrigerator |
| CN206586271U (en) * | 2016-12-12 | 2017-10-27 | 诸城市万利源机械科技有限公司 | A kind of high humidity low temperature thawing apparatus |
| CN106858271A (en) * | 2017-03-29 | 2017-06-20 | 仲恺农业工程学院 | A kind of pump type heat low temperature and high relative humidity air thawing device |
| CN208609803U (en) * | 2017-12-22 | 2019-03-19 | 潍坊汇和机械工程有限公司 | Low temperature and high relative humidity steam thawing equipment |
| CN209002754U (en) * | 2018-05-25 | 2019-06-21 | 海南力合泰食品有限公司 | A kind of meat defrosting device |
| CN208768875U (en) * | 2018-05-29 | 2019-04-23 | 四川北牧南江黄羊集团有限公司 | A kind of radio frequency thawing apparatus |
| CN110419562A (en) * | 2019-09-02 | 2019-11-08 | 四川长虹电器股份有限公司 | The changeable radio frequency thawing apparatus for accessing parallel plate suqare |
| CN211794089U (en) * | 2020-02-04 | 2020-10-30 | 天津商业大学 | High-humidity low-temperature radio frequency unfreezing system |
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|---|
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