CN203928604U - A kind of food vacuum frozing drier - Google Patents

A kind of food vacuum frozing drier Download PDF

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Publication number
CN203928604U
CN203928604U CN201420216112.6U CN201420216112U CN203928604U CN 203928604 U CN203928604 U CN 203928604U CN 201420216112 U CN201420216112 U CN 201420216112U CN 203928604 U CN203928604 U CN 203928604U
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China
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vacuum
heat exchanger
heating
connects respectively
circulating pump
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Expired - Lifetime
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CN201420216112.6U
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Chinese (zh)
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徐国峰
闵良
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Shaoxing Shangyu Food Machinery Co ltd Guanfeng
Zhejiang Guanfeng Food Machinery Co ltd
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SHANGYU GUANFENG FOOD MACHINERY Co Ltd
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Abstract

The utility model provides a kind of food vacuum frozing drier, comprise refrigeration system, vacuum system, heating system, the circulatory system and electric-control system, wherein the compressor in refrigeration system connects respectively the first cooling heat exchanger and cold-trap chamber, vavuum pump group in vacuum system is connected with cold-trap chamber by pipeline, circulating hot-water pump in heating system connects respectively dryness storehouse and heating heat exchanger, the second cooling heat exchanger in heating system is connected with the first water circulating pump in the circulatory system, the second water circulating pump in the circulatory system is connected with the first described cooling heat exchanger, cooling tower in the circulatory system connects respectively the first water circulating pump and the second water circulating pump, industrial computer in electric-control system connects respectively aforesaid refrigeration system, vacuum system, heating system, the circulatory system.The food vacuum frozing drier that the utility model provides freezes rapidly, vacuum is high, can realize fast freeze-drying, and utilize industrial computer to carry out able to programmeization control to system.

Description

A kind of food vacuum frozing drier
Technical field
The utility model relates to technical field of chemical, is specifically related to a kind of food vacuum frozing drier.
Background technology
Traditional dry meeting causes material shrinkage, destroys cell.And freeze drying refers to by distillation remove the process of moisture or other solvents from the biological product freezing.Distillation refers to solvent, such as water, as dry ice, without liquid state, from the solid-state process that directly becomes gaseous state.The product that freeze drying obtains is called lyophilized products (lyophilizer), and this process is called freeze-drying.In lyophilization process, the structure of sample can be not destroyed, because solid composition is being supported at its locational black ice.When ice distils, it can leave hole in dry surplus materials.The biological and chemical structure and the active integrality thereof that have so just retained product.In laboratory, freeze-drying has a lot of different purposes, and it is indispensable in many biochemistries and pharmacy application.It is used to obtain the biomaterial that can preserve over a long time, and for example microorganism cultivation, enzyme, blood and medicine, except long-term stability of preserving, have also retained its intrinsic biologically active and structure.For this reason, freeze-drying is used to prepare to be used as the tissue sample of structural research (for example electron microscopy study).Freeze drying is also applied in chemical analysis, and it can obtain the sample of dry state, or concentrating sample is analyzed susceptibility to increase.Freeze-drying makes sample composition stable, also does not need to change chemical composition, is desirable analysis supplementary means.Freeze drying can naturally-occurring.In natural situation, this process is slow and unpredictable.By lyophilization system, people improve, have segmented a lot of steps, have accelerated this process.
Vacuum freeze drier is refrigeration system, vacuum system, and heat-conducting oil heating system, dehumidification system is combined integrated, utilizes significantly memory box to put material space and carries out dry vacuum freezedrying.
1. the advantage of freeze-drying:
Freeze-drying is compared and is had following outstanding advantage with the common dry and vacuum drying of drying, boil dry, spray.
A. freeze-drying is dried at low temperatures, can not make protein produce sex change, but can make microorganism etc. lose biologos.This is for the kept dry particularly suitable of the poor biologically active goods of those thermal stabilities, biochemistry based article, genetic engineering based article and blood product etc.
B. owing to being low temperature drying, make nutritional labeling and the fragrance ingredient loss of volatile ingredient in material and heated denaturalization very little, be therefore the high-quality drying means of chemicals, medicine and food.
C. in low temperature drying process, the effect of microbial growth and enzyme almost cannot be carried out, thereby can keep best the original proterties of material.
D. volume after dry, shape are substantially constant, and it is spongy that material is, without drying shrinkage, during rehydration and the contact-making surface of water large, can also become rapidly original shape.
E. because being generally dry under vacuum, therefore oxygen is few, make oxidizable material obtain protection.
F. can remove in material 95%~99.5% moisture, the long shelf-life of goods.
2. the application of freeze-drying
Freeze-drying is a kind of drying means of high-quality.But it needs more expensive special equipment, and the energy consumption in dry run is larger, so processing cost is higher, is mainly used at present the following aspects.
A. biological products, pharmaceutical preparations: as the preservation of antibiotic, antitoxin, diagnostic article and vaccine.
B. microorganism and algae aspect: as the long-term preservation of various bacteriums, yeast, ferment, protozoan, fine algae etc.
C. biological sample, biological tissue aspect: as make various animal or plant specimens, kept dry is for edge tissues such as animal xenogenesis or homoioplastic skin, bone, sustainer, heart valves.
D. make the cell sheet for light microscope, electron scanning and transmission microscopy.
E. the dry aspect of food: as coffee, tealeaves, meat fish eggs, marine alga, fruit, vegetables, condiment, bean curd, instant food etc.
F. senior nutrition and Chinese herbal medicine aspect: as royal jelly, honey, pollen, Chinese herbal and crude drugs preparations etc.
G. the preparation aspect of super fine: as produce the super fines such as Al2O3, ZrO2, TiO2, Ba2Cu3O7~8, Ba2Ti9O20.
H. other aspects: as the catalyst in chemical industry, can improve 5~20 times of catalytic efficiencies after freeze-drying; Plant leaf, soil freeze-drying are preserved, in order to study soil, fertilizer, the effect of weather on the impact of plant growth and the factor; Moist Wooden Cultural Relics, to flood bad books contribution etc. dry by desivac, can maintain the original state to greatest extent etc.
3. cryodesiccated basic process is as follows:
A. the preparation of goods (pre-treatment): as the cultivation of medicine, sterilizing, packing, wash bottle, partly jump a queue etc., the selecting of raw-food material, cleaning, cutting, the enzyme that goes out, packing etc.
B. the freezing of goods (pre-freeze): goods are frozen into solid-state.
C. the first stage is dried (lyophilization): the ice crystal in goods is removed in distillation mode.
D. second stage is dried (adsorption stripping and dry): the moisture that residues in goods is evaporated to a part under higher temperature, make residual moisture reach pre-provisioning request.
E. pack: dried product generally should, in vacuum or filling with inert gas condition lower seal packing, be beneficial to store.
Utility model content
The purpose of this utility model is to provide a kind of food vacuum frozing drier, and rapidly, vacuum is high in this vacuum freeze drier cooling, and flaggy temperature is even, and uses programmable electric-control system.The technical solution adopted in the utility model is as described below.
A kind of food vacuum frozing drier, comprise refrigeration system, vacuum system, heating system, the circulatory system and electric-control system, wherein the compressor in refrigeration system connects respectively the first cooling heat exchanger and cold-trap chamber, vavuum pump group in vacuum system is connected with cold-trap chamber by pipeline, circulating hot-water pump in heating system connects respectively dryness storehouse and heating heat exchanger, the second cooling heat exchanger in heating system is connected with the first water circulating pump in the circulatory system, the second water circulating pump in the circulatory system is connected with the first described cooling heat exchanger, cooling tower in the circulatory system connects respectively the first water circulating pump and the second water circulating pump, industrial computer in electric-control system connects respectively aforesaid refrigeration system, vacuum system, heating system, the circulatory system.
Wherein, described industrial computer is the programmable logic controller (PLC) (PLC) with human-computer interaction interface.
The food vacuum frozing drier that the utility model provides freezes rapidly, vacuum is high, can realize fast freeze-drying, and utilize industrial computer to carry out able to programmeization control to system.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of a kind of food vacuum frozing drier in the utility model embodiment.
The specific embodiment
Provide preferred embodiment of the present utility model below, these embodiment unrestricted content of the present utility model.
Embodiment
Please as shown in Figure 1, the utility model embodiment provides a kind of food vacuum frozing drier, comprise refrigeration system, vacuum system, heating system, the circulatory system and electric-control system, compressor 2 in refrigeration system connects respectively the first cooling heat exchanger 3 and cold-trap chamber 1, vavuum pump group 4 in vacuum system is connected with cold-trap chamber 1 by pipeline, circulating hot-water pump 6 in heating system connects respectively dryness storehouse 5 and heating heat exchanger 7, the second cooling heat exchanger 8 in heating system is connected with the first water circulating pump 10 in the circulatory system, the second water circulating pump 11 in the circulatory system is connected with the first described cooling heat exchanger 3, cooling tower 9 in the circulatory system connects respectively the first water circulating pump 10 and the second water circulating pump 11, industrial computer in electric-control system (not drawing in figure) connects respectively aforesaid refrigeration system, vacuum system, heating system, the circulatory system.Described industrial computer is the programmable logic controller (PLC) (PLC) with human-computer interaction interface.
In the utility model, vacuum system adopts hydroseal pump to add the combination of oil-sealed pump, initial stage deaeration is taken out fast in advance by high-power oil-sealed pump group, maintenance work vacuum is worked by low power lobe pump group, capable of reducing energy consumption, hydroseal pump group can extract water vapour again simultaneously, has avoided the drainage performance of oil-sealed pump poor, and steam makes pump oil emulsion deterioration and then causes the unsettled drawback of system vacuum.Heating system is closed Self-pressurizing agri water circulation system, adopts the heating load of three-way control valve automatic control and adjustment water circulation system, and automatic constant pressure system can guarantee hot water temperature workability to 120 degree Celsius, improves heat transfer efficiency.The middle-size and small-size equipment of refrigeration system adopts freon refrigeration, and by the self-service adjusting of expansion valve, for flow quantity, main equipment adopts the peculiar mode of the single-phase circularly cooling of ammonia, and refrigeration feed flow good stability is easy to operate.Adopt the rear-mounted water-cooled trap of catching, path is short, and resistance is little, and steam via design is smooth, catches water even, improves and catches water efficiency, saves energy consumption.Electric-control system adopts PLC-HMI-industrial PC and monitoring, installs GRM400 series far-end control module additional, can realize remote maintenance, remote real_time control and monitoring.Because one of most important performance of freeze dryer is " freeze-drying curve control ", the auto-controll operation system of the peculiar freeze-drying curve for food freeze dryer of the utility model 10 period and temperature, make curve setting, operation very easy, and reliability is high.Temperature control valve (TCV) adopts the temperature automatic regulating system containing positive and negative pid algorithm, not only can accurately control curve temperature and speed, can also extend the service life of control valve.
Electric-control system in the utility model is the core control system of vacuum freeze drier; control and protection to the machinery of freeze dryer, electric equipment; the precision of production processing technology is played to conclusive effect; one control system packaging be realize safe and reliable; easy to operate, the assurance of automated production.PLC (programmable logic controller (PLC)) is a kind of computer that is exclusively used in Industry Control, in commercial Application, there is reliability high, antijamming capability is strong, can adapt to various severe running environment, and system forms flexibly, expansion easily, can form complicated control system with host computer, realizes the comprehensive automation of production process.HMI (man-machine interface) carries out the medium of information exchange between PLC system and user, have easy to operate, dependable performance, powerful, be well suited for the monitoring and controlling of industrial field device operation.Technical grade PC (industrial computer) possesses firm, shockproof, moistureproof, dustproof, high temperature resistant many slots and is easy to the features such as expansion.It is the optimal platform of various Industry Control and automatic field application.
Below the preferably operational instances of the utility model vacuum freeze drier to " freeze-drying durian process ".
1. confirm that material freezes at quick freezing repository, generally at quick freezing repository-30 ℃, constant temperature freezes (the pre-freeze temperature of product is conventionally than the low 5-10 ℃ of product eutectic temperature) about 3 hours.
2. defrosted totally in confirmation cold-trap chamber 1, vacuum gas filling valve, and defrosting water valve thoroughly shuts.
3. vacuum freeze drier starts precooling, and when when cold-trap chamber, 1 temperature reaches-15 ℃ of left and right, the product that just quick freezing repository can have been freezed pushes in dryness storehouse 5.
4. be plugged the probe of material sensor, shut the dry door of freeze dryer.
5. open the cooling system water circulating pump of vavuum pump group 4, open successively vacuum valve group, start to vacuumize, treat that vacuum reaches below 70Pa, cold-trap chamber 1 temperature reaches below-30 ℃, just can open heating system and start heating.
6. by heating system, progressively improve plate temperature to 80-90 ℃, through-rate is controlled rate of sublimation, and in this process, vacuum is no more than 100Pa, and cold-trap chamber 1 temperature remains on below-28 ℃.This process is generally about 2-3 hour.
7. by the setting of temperature control curve, stage by stage, progressively reduce plate temperature to 40-50 ℃, process control is little 10
Time with interior (according to product, different there is any discrepancy), when product temperature approaches the explanation of plate temperature, distil and substantially finish.
In this process, vacuum is no more than 100Pa, and condenser temperature remains on below-28 ℃.
8. the 2-3 hour that reruns, now because distillation is substantially complete,, in this process below vacuum 120Pa, condenser temperature remain on-20 ℃ following just passable.Normal food freeze-drying process is about 12-16 hour.
9. confirmation temperature control curve is covered, and product is dry, stops vacuum system, heating system, and refrigeration system, opens vacuum gas filling valve, and vacuum breaker delivers from godown.
10. after delivering from godown, product warehousing encapsulation.Open defrosting water valve, cold-trap is thoroughly defrosted, print or store related data.
Obviously, those skilled in the art can carry out various changes and modification and not depart from spirit and scope of the present utility model utility model.Like this; within if these modifications of the present utility model and modification belong to the scope of the utility model claim and equivalent technologies thereof; for those skilled in the art; in the situation that not making creative work; other embodiment that make based on the present embodiment belong to protection domain of the present utility model, the utility model be also intended to comprise these change and modification interior.

Claims (2)

1. a food vacuum frozing drier, comprise refrigeration system, vacuum system, heating system, the circulatory system and electric-control system, it is characterized in that, compressor in refrigeration system connects respectively the first cooling heat exchanger and cold-trap chamber, vavuum pump group in vacuum system is connected with cold-trap chamber by pipeline, circulating hot-water pump in heating system connects respectively dryness storehouse and heating heat exchanger, the second cooling heat exchanger in heating system is connected with the first water circulating pump in the circulatory system, the second water circulating pump in the circulatory system is connected with the first described cooling heat exchanger, cooling tower in the circulatory system connects respectively the first water circulating pump and the second water circulating pump, industrial computer in electric-control system connects respectively aforesaid refrigeration system, vacuum system, heating system, the circulatory system.
2. food vaccum freezing dryer as claimed in claim 1, is characterized in that, described industrial computer is the programmable logic controller (PLC) with human-computer interaction interface.
CN201420216112.6U 2014-04-29 2014-04-29 A kind of food vacuum frozing drier Expired - Lifetime CN203928604U (en)

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Application Number Priority Date Filing Date Title
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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105020988A (en) * 2015-07-27 2015-11-04 丹东君澳食品有限公司 Vacuum freeze-drying technological method
CN105784753A (en) * 2016-04-14 2016-07-20 王劲松 Freeze-dryer eutectic point and co-melting point testing equipment and system
CN108007075A (en) * 2017-10-16 2018-05-08 浙江冠峰食品机械有限公司 The defrosting de-icing method of vacuum freeze drier system and the system
CN109341247A (en) * 2018-10-19 2019-02-15 浙江冠峰食品机械有限公司 A kind of vacuum freeze drier
CN109520238A (en) * 2018-11-27 2019-03-26 上海卫星装备研究所 Novel intelligent vacuum freeze
CN110338436A (en) * 2018-04-03 2019-10-18 蔡明宪 Vegetables and fruits drying system
CN110523096A (en) * 2019-07-24 2019-12-03 天津科技大学 The scale drying device and method of probiotics feed liquid sublimation drying can be shortened
WO2020201822A3 (en) * 2019-01-27 2020-12-03 Nguyen Vien Lam Convection current freeze drying apparatus and method of operating the same
EP4053481A1 (en) * 2021-03-05 2022-09-07 GEA Lyophil GmbH A freeze dryer and a method for operating a freeze dryer

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105020988A (en) * 2015-07-27 2015-11-04 丹东君澳食品有限公司 Vacuum freeze-drying technological method
CN105784753A (en) * 2016-04-14 2016-07-20 王劲松 Freeze-dryer eutectic point and co-melting point testing equipment and system
CN105784753B (en) * 2016-04-14 2018-12-28 王劲松 A kind of freeze dryer eutectic point eutectic point test equipment and its test macro
CN108007075A (en) * 2017-10-16 2018-05-08 浙江冠峰食品机械有限公司 The defrosting de-icing method of vacuum freeze drier system and the system
CN110338436A (en) * 2018-04-03 2019-10-18 蔡明宪 Vegetables and fruits drying system
CN109341247A (en) * 2018-10-19 2019-02-15 浙江冠峰食品机械有限公司 A kind of vacuum freeze drier
CN109520238A (en) * 2018-11-27 2019-03-26 上海卫星装备研究所 Novel intelligent vacuum freeze
WO2020201822A3 (en) * 2019-01-27 2020-12-03 Nguyen Vien Lam Convection current freeze drying apparatus and method of operating the same
CN110523096A (en) * 2019-07-24 2019-12-03 天津科技大学 The scale drying device and method of probiotics feed liquid sublimation drying can be shortened
CN110523096B (en) * 2019-07-24 2022-03-04 天津科技大学 Large-scale drying device and method capable of shortening probiotic feed liquid freeze-drying time
EP4053481A1 (en) * 2021-03-05 2022-09-07 GEA Lyophil GmbH A freeze dryer and a method for operating a freeze dryer
WO2022184767A1 (en) * 2021-03-05 2022-09-09 Gea Lyophil Gmbh A freeze dryer and a method for operating a freeze dryer

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C14 Grant of patent or utility model
GR01 Patent grant
CP01 Change in the name or title of a patent holder
CP01 Change in the name or title of a patent holder

Address after: Shangyu City, Zhejiang province Baiguan street new road 312300 Shaoxing City No. 317

Patentee after: ZHEJIANG GUANFENG FOOD MACHINERY CO.,LTD.

Address before: Shangyu City, Zhejiang province Baiguan street new road 312300 Shaoxing City No. 317

Patentee before: Shaoxing Shangyu Food Machinery Co.,Ltd. Guanfeng

CP03 Change of name, title or address

Address after: Shangyu City, Zhejiang province Baiguan street new road 312300 Shaoxing City No. 317

Patentee after: Shaoxing Shangyu Food Machinery Co.,Ltd. Guanfeng

Address before: Shangyu City, Zhejiang province Baiguan street new road 312352 Shaoxing City No. 317

Patentee before: SHANGYU GUANFENG FOOD MACHINERY Co.,Ltd.

CP02 Change in the address of a patent holder
CP02 Change in the address of a patent holder

Address after: Zhejiang province Shaoxing city Shangyu District Dongguan Street South Industrial Park

Patentee after: ZHEJIANG GUANFENG FOOD MACHINERY CO.,LTD.

Address before: Shangyu City, Zhejiang province Baiguan street new road 312300 Shaoxing City No. 317

Patentee before: ZHEJIANG GUANFENG FOOD MACHINERY CO.,LTD.

CX01 Expiry of patent term
CX01 Expiry of patent term

Granted publication date: 20141105