CN2795761Y - Vacuum freezing dry device - Google Patents
Vacuum freezing dry device Download PDFInfo
- Publication number
- CN2795761Y CN2795761Y CN 200520017270 CN200520017270U CN2795761Y CN 2795761 Y CN2795761 Y CN 2795761Y CN 200520017270 CN200520017270 CN 200520017270 CN 200520017270 U CN200520017270 U CN 200520017270U CN 2795761 Y CN2795761 Y CN 2795761Y
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- liquid nitrogen
- drying device
- ice crystal
- vacuum refrigeration
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Abstract
The utility model relates to a vacuum freezing dry device, which is provided with a dry unit which is arranged in a contain space in an airtight, thermal insulating and drying chamber. Drying procedures are done under the vacuum environment of low pressure and low temperature. The dry unit comprises at least two sets of ice crystal catchers and a liquid nitrogen device. The liquid nitrogen device and the two sets of ice crystal catchers are respectively communicated with connecting pipelines. Liquid nitrogen provided by the liquid nitrogen device is a cooling medium, and effectively removes the moisture of a product in the process of the sublimation of freezing and drying inner freezing moisture. The utility model enables heat to penetrate into the interior of the product, and evenly heat; the utility model enables the sublimation effect of moisture to stabilize, and effectively catches the moisture. Thus, drying time is shortened and the yield of the product is raised.
Description
Technical field
The utility model relates to a kind of drying device of vacuum refrigeration, especially relate to and a kind ofly in drying cabin, include at least two group ice crystal catchers and take turns start and an auxiliary liquid nitrogen tank so that cold coal to be provided with a dryer group, effectively collect aqueous vapor, significantly improve the drying device of product drying efficient.
Background technology
Utilizing Refrigeration Technique to reach dried foods, make its original color and luster of food preservation, smell and taste, is a quantum jump of Refrigeration Technique extensive use.The operator scheme of existing Freeze Drying Technique, be that product to be dried is inserted in the Sheng dish, the cold medium compressor freezer that in a body, the is provided with cooler then cooling program of lowering the temperature, just with this cooler as low-temperature receiver, product in the Sheng dish is refrigerated to about-50 ℃, then just Sheng dish and product are moved to the vacuum drying cabin that another has hot disc structure, utilizing the directly distillation of being heated of solid ice under the vacuum state is the natural phenomena of aqueous vapor, allow this Sheng dish that fills product on the heat dish of heating, continue to be heated, progressively collect the aqueous vapor of distillation in the vacuum drying cabin then by an ice crystal catcher (Ice crystal catcher), thereby reach the purpose of dry products.Though the aforesaid operations pattern can reach the effect that product is dehydrated, it still has following several shortcomings at freezing dry process:
1, heat dish is to be fixedly set in the vacuum drying cabin, so the slit dead angle is a lot, cleans very difficultly, is difficult to guarantee the cleanliness factor of inside, vacuum drying cabin, therefore can't reach the sterility requirements as the pharmacy of life skill.
2, the aforementioned hot dish be with the circulating hot water of content indirectly through Sheng dish transfer of heat to product because swollen gradually of product becomes spongy under the vacuum environment, influence heat passes effect, unless increase process time, otherwise the heat skewness causes the degree of drying inequality, will have a strong impact on the row yielding of product.
3, aforementioned ice crystal catcher comprises that also traditional freezing equipments such as cold medium compressor and cooling tower form, because of shutting down in the dry run, single ice crystal catcher can only be let alone surperficial ice crystal thickening gradually in operation, make the aqueous vapor capacity gauge reduce gradually, thereby prolong dry process time; If this strengthens cold medium compressor and vacuum pump size, increase the consumption and the production cost of the energy undoubtedly.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of drying device of vacuum refrigeration, can make heat go deep into product inside also evenly heats, make aqueous vapor distillation effect stabilization, and effectively catch aqueous vapor, thereby significantly shorten drying time, more improve the drying device of the vacuum refrigeration of product row yielding.
To achieve these goals, the utility model provides a kind of drying device of vacuum refrigeration, has a dryer group, be arranged in the accommodation space in the airtight heat preservation and dryness cabin, its characteristics are: this dryer group comprises at least two group ice crystal catchers and a liquid nitrogen plan, is connected with a connecting line separately between this at least two groups ice crystal catcher and this liquid nitrogen plan.
The drying device of above-mentioned vacuum refrigeration, its characteristics are that the required thermal source of this sublimation process is made of at least one far infrared lamp group or quartz electrothermal tube.
The drying device of above-mentioned vacuum refrigeration, its characteristics are that this thermal source equidistant parallel is arranged in the enclosure interior around this accommodation space.
The drying device of above-mentioned vacuum refrigeration, its characteristics are that this dryer group also comprises a liquid nitrogen trap, are communicated in this at least two groups ice crystal catcher rear.
The drying device of above-mentioned vacuum refrigeration, its characteristics are that this liquid nitrogen plan also comprises liquid nitrogen tank, connecting line and is located at least one valve body of this connecting line, and this connecting line is connected with this two groups ice crystal catcher and this liquid nitrogen tank separately at least.
The drying device of above-mentioned vacuum refrigeration, its characteristics are, this valve body and this valve body of control, and the program-controlled device of logic that makes this at least two groups ice crystal catcher be alternately running connects.
The drying device of above-mentioned vacuum refrigeration, its characteristics are that this accommodation space further includes a chassis, and the middle position of this chassis front end and rear end respectively is provided with a back shaft.
The drying device of above-mentioned vacuum refrigeration, its characteristics are that the chassis below of this accommodation space also is provided with a finished product Sheng dish.
The drying device of above-mentioned vacuum refrigeration, its characteristics are, also are provided with one in this accommodation space and make the motor that each 90 degree rotates about this chassis.
Effect of the present utility model is as follows:
1, makes radiant heat go deep into product inside and even heating with FAR INFRARED HEATING,, more improve the product row yielding and reach more than 90% except keeping best distillation effect and can significantly shortening drying time.
2, cooperation can be revolved the product chassis that turn 90 degrees to the left and right, makes more each position of Dasheng dish of far-infrared radiation heat, and dry earlier product drops in rotary course in advance, is beneficial to the product continuation effect of below for drying, helps the raising of rate of sublimation.
3, needn't install fixing heat dish, so behind the chassis of the loading stocks Sheng dish release drying cabin, the headroom that is beneficial in the accommodation space is cleaned, and improves the cleanliness factor of drying cabin inside.
4, two groups of ice crystal catchers detect alternately running in good time under the controller ground monitoring at logic programmable, improve the ice crystal catcher and block the shortcoming that effect causes performance to reduce because of ice sheet, thereby keep removal aqueous vapor effect best in the drying cabin, the product water content can be reached below 4%.
5, through the use of the liquid nitrogen trap of arranging in pairs or groups again, strengthen catching aqueous vapor by the ice crystal catcher, to guarantee the stable of vacuum in the drying cabin, make sublimation more stable.
6, further, integral body can cooperate low power vavuum pump and liquid refrigerants device, removes the cost of reduction equipment, also can significantly save dealer's production cost.
Below in conjunction with the drawings and specific embodiments the utility model is described in detail, but not as to qualification of the present utility model.
Description of drawings
Fig. 1 is a structure front schematic view of the present utility model;
Fig. 2 is a structure vertical view of the present utility model;
Fig. 3 is an effect schematic flow sheet of the present utility model;
Fig. 4 is another embodiment of the present utility model.
Wherein, Reference numeral:
The 1-drying cabin, 11-housing, 12-hatch door
The 121-motor, the 122-reductor
The 13-accommodation space, 131-finished product Sheng dish
The 132-bearing, the 14-chassis
The 141-cross bar, 142,142 '-back shaft
The 15-clamp, 16-product Sheng dish
The 2-vavuum pump, the 21-exhaust tube
3-far infrared lamp group
31-far infrared fluorescent tube, the 32-reflection unit
The 4-dryer group, 41-ice crystal catcher
The 42-liquid nitrogen plan, the 421-liquid nitrogen tank
The 422-connecting line, the 43-liquid nitrogen trap
The 44-thermal source, the 45-suction pump
CV1～CV11-valve body
The 5-logic programmable detects controller
The specific embodiment
At first, please refer to Fig. 1, Fig. 2 and shown in Figure 3, the utility model is a kind of action time that shortens distillation, significantly improve the drying device of the vacuum refrigeration of product drying quality, this device comprises a drying cabin 1, a vavuum pump 2, at least one far infrared lamp group 3, a dryer group 4 and a logic programmable and detects controller 5, wherein:
This drying cabin 1 is a hollow housing 11, these housing 11 open ends have a hatch door 12, and housing 11 and hatch door 12 have all been made airtight insulation construction, and housing 11 inside are accommodation space 13, these accommodation space 13 belows are provided with guide rail, can insert for a movable chassis 14; This chassis 14 has the cross bar 141 of at least one equi-spaced apart, cross bar 141 make with the product Sheng coil 16 edges relative by edge, and unlikelyly after putting product Sheng dish 16 allow it deviate from easily.
This vavuum pump 2 utilizes exhaust tube 21 to be communicated with the accommodation space 13 of drying cabin 1, makes accommodation space 13 present vacuum state in order to carry out the exhaust action; (CV1～CV5) (can change the moving-wire of air pipe line at valve body under the modulation of CV1～CV5) to be provided with relevant valve body between exhaust tube; Then can be as for the air of extracting out through disengaging behind ice crystal catcher 41 described later and the liquid nitrogen trap (Liquid nitrogen adsorption trap) 43.
This far infrared lamp group 3 is by infrared lamp 31, through cooperating reflection unit 32 to combine, these far infrared lamp group 3 equidistant parallels are arranged in housing 11 inside around the accommodation space, utilize its far ir ray can produce photothermal effect, to Sheng dish and the product effect of heating, the thermal source when using as sublimation.
The configuration purpose of this dryer group 4 after catching distillation aqueous vapor and it is freezed, comprise two groups of ice crystal catchers 41, a liquid nitrogen plan 42, a liquid nitrogen trap 43, reach relevant valve body (CV6～CV11) with thermal source 44, suction pump 45 as defrosting; This liquid nitrogen plan 42 comprises liquid nitrogen tank 421 and connecting line 422, utilizes connecting line 422 this liquid nitrogen tanks 421 and this two groups of ice crystal catchers 41 and this liquid nitrogen trap 43 that are communicated with out of the ordinary; These two groups of ice crystal catchers 41 and liquid nitrogen trap 43 are the air grille that connecting line 422 wriggles and transfers and form, in the connecting line with the lower liquid nitrogen of temperature as refrigerant, utilize the splendid cooling effect of liquid nitrogen, improve the usefulness of catching aqueous vapor, the liquid nitrogen connecting line 422 of these two groups of ice crystal catchers 41 is provided with valve body CV6, CV7, in time changes the moving-wire of liquid nitrogen connecting line under the conversion of valve body CV6, CV7; 45 of thermal source 44 and suction pumps also are provided with valve body, and (CV8～CV11), this thermal source 44 can be steam or hot water, utilizes whether enabling of valve body CV8, CV9 control thermal source 44, and valve body CV10, CV11 then control melt water and whether discharge; In dry run, two groups of ice crystal catchers are running alternately, newly swashs the reviver and continues and catch aqueous vapor and condensed, and then external heat source 44 of person does not just quit work, but certain above-mentioned valve body detects controller 5 by following logic program and is controlled, so that two groups of ice crystal catchers 41 replace running.
This logic programmable detect controller 5 link above-mentioned vavuum pump 2 is arranged, far infrared lamp group 3, valve body (members such as CV1～CV11), suction pump 45, be one can import drying cabin environment control numerical value, and the use of cooperation Temperature Detector, moisture detector and pressure detector, make this logic programmable detect the operating state of controller 5 according to a plurality of members of the automatic modulation of this control numerical value, make the environment in the accommodation space 13 remain on best action condition, and ambient conditions such as present temperature, humidity, vacuum are shown on the monitor.
Refer again to Fig. 2 and Fig. 3, when the utility model is assembled above-mentioned member and implemented, the chassis that product Sheng dish is housed be fixation in accommodation space, the product in this moment Sheng dish is in advance through about freezing the reaching-50 ℃ of lowering the temperature; Treat that hatch door 12 closes and fixedly guarantee to activate vavuum pump 2 with accommodation space vacuum pumping gradually after airtight, when the vacuum of accommodation space reaches 0.2mbar, can form and be beneficial to the solid ice distillation and be the vacuum low-pressure low temperature environment of aqueous vapor with clamp 15; In the environment of above-mentioned vacuum low-pressure low temperature, solid ice with far infrared lamp group of the present utility model 3 as heating source, utilize the radiant heat of far ir ray and good permeability, make heat be goed deep into product inside, swollen of product does not become spongy under the reason vacuum, and the phenomenon of heat conduction inequality appears, cause the uneven shortcoming of degree of drying; The aqueous vapor that sublimation produced, be that to cooperate at least two groups be the alternately running of ice crystal catcher 41 of refrigerant with the liquid nitrogen, when treating promptly that also wherein one group of ice crystal catcher 41 reduces because of the frosting effect, make it decommission and open another group ice crystal catcher 41, the ice crystal catcher 41 that decommissions then adds thermalization and ices into water, with suction pump 45 water is extracted out again; Whole process can detect under the strictness control of controller 5 at logic programmable, steadily control the control transfer of heat amount, reduce vacuum to avoid the drying cabin excess moisture, cause prolonging the shortcoming of drying time and power consumption, thereby keep removal aqueous vapor effect best in the drying cabin.
Please refer to Fig. 4 at last, another embodiment that further cooperates far infrared lamp group 3 to be implemented for the utility model, wherein, outside hatch door 12, be provided with a motor 121, motor shaft is connected a reductor 122 by hatch door 12 backs, and the about middle position of chassis 14 front and back ends respectively is provided with a back shaft 142,142 ', and the bilge of chassis below then is provided with a finished product Sheng dish 131; When hatch door 12 was closed, the back shaft 142 ' of chassis 14 rear ends was just inserted in the fixing bearing 132, and 142 of the back shafts of chassis 14 front ends are connected with reductor 122, chassis 14 under the indirect driving of motor, respectively 90 rotations of spending about can doing; In view of the above, in the dry run, the chassis that rotates is translation-angle every now and then, make far-infrared radiation heat can be conveyed to Sheng more fifty-fifty and coil each corner, improve distillation efficient, in addition, the product Sheng is coiled 16 left-right rotation 90 and is spent when being erectility, the finished product that drying is finished can fall to finished product Sheng dish 131 earlier, avoids blocking the undried product in rear, effectively improves in the prior art dry products and intercepts the shortcoming that dry products is not accepted thermal source easily.
The thermal source system of the above-mentioned preferred embodiment of the utility model is exposed in far infrared lamp group 3, but is not in order to restriction the utility model, and the thermal source system of the utility model also is a quartz electrothermal tube etc.
By the enforcement of above-mentioned set structure, and compared, be the utlity model has following advantage as can be known with the drying device of existing vacuum refrigeration:
1, makes radiant heat go deep into product inside and even heating with FAR INFRARED HEATING,, more improve the product row yielding and reach more than 90% except keeping best distillation effect and can significantly shortening drying time.
2, cooperation can be revolved the product chassis that turn 90 degrees to the left and right, makes more each position of Dasheng dish of far-infrared radiation heat, and dry earlier product drops in rotary course in advance, is beneficial to the product continuation effect of below for drying, helps the raising of rate of sublimation.
3, needn't install fixing heat dish, so behind the chassis of the loading stocks Sheng dish release drying cabin, the headroom that is beneficial in the accommodation space is cleaned, and improves the cleanliness factor of drying cabin inside.
4, two groups of ice crystal catchers detect alternately running in good time under the controller ground monitoring at logic programmable, improve the ice crystal catcher and block the shortcoming that effect causes performance to reduce because of ice sheet, thereby keep removal aqueous vapor effect best in the drying cabin, the product water content can be reached below 4%.
5, through the use of the liquid nitrogen trap of arranging in pairs or groups again, strengthen catching aqueous vapor by the ice crystal catcher, to guarantee the stable of vacuum in the drying cabin, make sublimation more stable.
6, further, integral body can cooperate low power vavuum pump and liquid refrigerants device, removes the cost of reduction equipment, also can significantly save dealer's production cost.
Certainly; the utility model also can have other various embodiments; under the situation that does not deviate from the utility model spirit and essence thereof; those of ordinary skill in the art can make various corresponding changes and distortion according to the utility model, but these corresponding changes and distortion all should belong to the protection domain of the utility model claim.
Claims (9)
1, a kind of drying device of vacuum refrigeration, has a dryer group, be arranged in the accommodation space in the airtight heat preservation and dryness cabin, it is characterized in that: this dryer group comprises at least two group ice crystal catchers and a liquid nitrogen plan, is connected with a connecting line separately between this ice crystal catcher and this liquid nitrogen plan.
2, the drying device of vacuum refrigeration according to claim 1 is characterized in that, comprises at least that also one is used to provide the far infrared lamp group or the quartz electrothermal tube of the required thermal source of sublimation process.
3, the drying device of vacuum refrigeration according to claim 2 is characterized in that, this thermal source equidistant parallel is arranged in the enclosure interior around this accommodation space.
4, the drying device of vacuum refrigeration according to claim 1 is characterized in that, this dryer group also comprises a liquid nitrogen trap, is communicated in this at least two groups ice crystal catcher rear.
5, the drying device of vacuum refrigeration according to claim 1, it is characterized in that, this liquid nitrogen plan also comprises liquid nitrogen tank, connecting line and is located at least one valve body of this connecting line, and this connecting line is connected with this two groups ice crystal catcher and this liquid nitrogen tank at least.
6, the drying device of vacuum refrigeration according to claim 5 is characterized in that, this valve body also connects these two groups of ice crystal catchers of control and is the alternately programmable logic controller (PLC) of running.
7, the drying device of vacuum refrigeration according to claim 1 is characterized in that, this accommodation space further includes a chassis, and the middle position of this chassis front end and rear end respectively is provided with a back shaft.
8, the drying device of vacuum refrigeration according to claim 7 is characterized in that, the chassis below of this accommodation space also is provided with a finished product Sheng dish.
9, the drying device of vacuum refrigeration according to claim 8 is characterized in that, also is provided with the motor that each 90 degree rotates about this chassis of control in this accommodation space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520017270 CN2795761Y (en) | 2005-04-27 | 2005-04-27 | Vacuum freezing dry device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520017270 CN2795761Y (en) | 2005-04-27 | 2005-04-27 | Vacuum freezing dry device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2795761Y true CN2795761Y (en) | 2006-07-12 |
Family
ID=36813517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520017270 Expired - Fee Related CN2795761Y (en) | 2005-04-27 | 2005-04-27 | Vacuum freezing dry device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2795761Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101738062B (en) * | 2008-11-14 | 2012-09-19 | 兰州科近真空冻干技术有限公司 | Vacuum freeze-drying device |
| CN110338436A (en) * | 2018-04-03 | 2019-10-18 | 蔡明宪 | Vegetables and fruits drying system |
| CN111595114A (en) * | 2020-01-20 | 2020-08-28 | 新三和（烟台）食品有限责任公司 | Energy-saving food vacuum drying device with adjustable placing space |
-
2005
- 2005-04-27 CN CN 200520017270 patent/CN2795761Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101738062B (en) * | 2008-11-14 | 2012-09-19 | 兰州科近真空冻干技术有限公司 | Vacuum freeze-drying device |
| CN110338436A (en) * | 2018-04-03 | 2019-10-18 | 蔡明宪 | Vegetables and fruits drying system |
| CN111595114A (en) * | 2020-01-20 | 2020-08-28 | 新三和（烟台）食品有限责任公司 | Energy-saving food vacuum drying device with adjustable placing space |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |