CN201233162Y

CN201233162Y - Microwave freeze drier

Info

Publication number: CN201233162Y
Application number: CNU2008200290593U
Authority: CN
Inventors: 李晟; 赵彦明
Original assignee: Tianshui Huayuan Pharmaceutical Equipment Technology Co Ltd
Current assignee: Tianshui Huayuan Pharmaceutical Equipment Technology Co Ltd
Priority date: 2008-05-01
Filing date: 2008-05-01
Publication date: 2009-05-06
Anticipated expiration: 2018-05-01

Abstract

The utility model relates to a drying machine used in the field of medical preparation, food, and chemical industry and so on, in particular to a microwave freeze drying machine. The drying machine comprises a freeze drying cavity (1) and a refrigerating unit (3). The utility model has the characteristics that the freeze drying cavity (1) is provided with a microwave heating source (11) on cavity wall. The lower part of the microwave heating source (11) is provided with a compound pan (12). The freeze drying cavity (1) is communicated with a condenser (4) and the refrigerating unit (3) in turn through a first pipeline (2-1). A vacuum pump (5) is communicated with the condenser (4) through a second pipeline (4). The utility model integrates microwave technology with freezing technology, ensuring that the material which has been dried has unchanged bioactivity, uniform appearance color, plump form, firm structure, rapid solution rate and low residual moisture content. The drying machine has high efficiency, saves energy, protects the environment, and is suitable to be used by large-scale and small-scale manufacturers.

Description

The microwave freeze-drying machine

Technical field:

The utility model relates to a kind of drying machine that is applied in the fields such as pharmacy, food, chemical industry, is specifically related to a kind of microwave freeze-drying machine.

Background technology:

Vacuum freeze drying makes the most of water in the material all freeze to provide low-temperature heat source then for ice, under vacuum state, ice is directly distilled make the process of dry materials for steam,, can avoid the pyrolytic damage and the oxidative damage of dry run because freeze drying is carried out at low temperatures, owing to moisture is got rid of by distillation under frozen state, material is fixed to one shape in sublimation process, does not have flowing of water, therefore, aroma constituent still is fixed in the material, loses less.And mostly being methods such as hot air circulation, Steam Heating, electrical heating, the low-temperature heat source of general freeze dryer carries out drying, heating principles such as its hot air circulation, steam, electrical heating are: material heats from outside to inside, material in heating process is prone to scorched outside and underdone inside manifesting, most importantly heating cycle is long, power consumption simultaneously is big, and maintenance and maintenance cost are high.

The applicant had had once researched and developed the microwave drying sterilization machine, with the microwave is that heating source heats material, make the polar molecule of material inside produce strong vibrations and friction during heating using microwave, thereby produce the purpose that heat reaches heat drying, material is from inside to outside to heat in heating process, cell in the material causes strong polarity concussion under the effect of microwave alternating electromagnetic field, cause the spalling of capacitive character membrane structure, perhaps hydrogen bond relaxes and waits destruction between cellular elements, elementary cell---the living environment of cell is seriously damaged to make bacterium, so that it is dead, thereby reach the purpose of sterilization, and microwave action mainly is water, to such an extent as to the material fresh keeping property behind the dry sterilization is poor, temperature compares higher, for the easy oxidation of active ingredient, the material that easily decomposes or dissolve is not an ideal product.

Summary of the invention:

The purpose of this utility model is to provide a kind of can avoid the deficiencies in the prior art part, and a kind of freeze drier is provided, and it can make the shape of product and structural constituent obtain high-quality dried product, is suitable for dry heat sensitive material.

The technical scheme that its technical problem that solves the utility model adopts is: described microwave freeze-drying machine, include freeze-drying chamber (1), refrigeration unit (3), its characteristics are: the chamber wall in described freeze-drying chamber (1) is provided with heating using microwave source (11), the bottom in heating using microwave source (11) is provided with charging tray (12), freeze-drying chamber (1) is communicated with condenser (4), refrigeration unit (3) successively by first pipeline (2-1), and vavuum pump (5) is connected with condenser (4) by second pipeline (2-2).

Described charging tray (12) below is provided with cold plate (13), and cold plate (13) is connected with refrigeration unit (3) by pipeline (2-3).Heating using microwave source (11) in the freeze-drying chamber (1) is multitube shape or single tube shape.When heating using microwave source (11) is single tube shape, be connected to waveguide on it, have microwave feedback mouth in the waveguide.The bottom of the charging tray (12) in the freeze-drying chamber (1) links to each other with motor (14), and charging tray (12) is a single or multiple lift.Freeze-drying chamber (1) is provided with vacuum valve (6) with the connecting pipe (2-1) of condenser (4).Be provided with heater (4-1) and condenser (4-2) in the condenser (4), the bottom of condenser (4) is provided with Draw off valve (4-3).Condenser (4-2) in the condenser (4) is for twining the cylinder formula, and its operating temperature is lower than temperature of articles in the drying box.Make that vapor evaporated can condense on the condenser fully from goods.

The beneficial effects of the utility model are in conjunction with application with its microwave technology and Refrigeration Technique, the material biologically active that drying is come out is constant, appearance luster is even, form is full, sound construction, the fast residual moisture of dissolution velocity are low, efficient, the energy-saving and environmental protection of this device are fit to use with big small-sized manufacturer.

Description of drawings:

Fig. 1 is the structural representation for present embodiment 1;

Fig. 2 is the structural representation for present embodiment 2;

Specific implementation method:

Embodiment 1, see Fig. 1, a kind of freeze drier, include freeze-drying chamber 1, refrigeration unit 3 is provided with heating using microwave source 11 on the freeze-drying chamber 1 chamber wall above the charging tray 12 that is provided with in freeze-drying chamber 1, freeze-drying chamber 1 is communicated with condenser 4, refrigeration unit 3 successively by the first pipeline 2-1, vavuum pump 5 is connected with condenser 4 by the second pipeline 2-2, to guarantee the vacuum pressure in freeze-drying chamber, the condenser.Described charging tray 12 belows are provided with cold plate 13, and cold plate 13 is connected with refrigeration unit 3 by pipeline 2-3.The heating using microwave source 11 that is provided with in the freeze-drying chamber 1 is multitube shape.

Charging tray 12 in the freeze-drying chamber 1 horizontally rotates motion for doing by motor 14, so that accept microwave energy uniformly.Freeze-drying chamber 1 is provided with vacuum valve 6 with the connecting pipe 2-1 of condenser 4, so that save the energy.Be provided with heater 4-1 and condenser 4-2 in described condenser 4, condenser 4 bottoms are provided with Draw off valve 4-3.Condenser 42 in the condenser 4 is for twining the cylinder formula, and its operating temperature is lower than temperature of articles in the drying box.Make that vapor evaporated can condense on the condenser fully from goods.

Its workflow is: the charging tray 12 of material being put into freeze-drying chamber 1, opening refrigeration unit 3 sends into low-temperature receiver on the cold plate 12 along pipeline 2-3, close the vacuum valve on the pipeline 2-1 simultaneously, so that saving low-temperature receiver, cold plate 13 is dispersed into low-temperature receiver in the freeze-drying chamber 1, thereby material is reached the purpose of freezing, after material freezes, the vacuum valve on the opening conduits 2-1 at first, open 5 pairs of freeze-drying chambeies 1 of vavuum pump again, space in the condenser 4 and each pipeline that communicates vacuumize, learn degree of pressure by vacuum pressure sensor, when if pressure reaches desired value, open the rotating shaft of charging tray 12, make it do the level running, opening the 11 pairs of materials in heating using microwave source simultaneously heats, when material reaches uniform temperature, moisture in the material directly distils, and the pipeline 2-1 that the steam that is produced simultaneously links to each other with condenser 4 by freeze-drying chamber 1 is drawn in the condenser 4, and be frozen in the condenser 4 than on the low condenser 4-2 of temperature of charge, when the pressure on the pressure vacuum gauge shows not in rising, the dry end is described, close heating using microwave source 11 successively, vavuum pump 5, refrigeration unit 3, take out the heater 4-1 that opens in the condenser 4 after the material and remove the frost that is freezed on the condenser 4-2, open Draw off valve 4-3 when changing into water fully, water is flowed out, so that use next time.

Embodiment 2, see Fig. 2, and is identical with embodiment 1, and different is that its 1 interior heating using microwave source 11, freeze-drying chamber is single tube shape, is connected to waveguide on the described heating using microwave source 11, has microwave feedback mouth in its waveguide.Below described charging tray 12, be not provided with cold plate 13.

Its workflow is: the charging tray 12 of material being put into freeze-drying chamber 1, open 5 pairs of freeze-drying chambeies 1 of vavuum pump, space in the condenser 4 and each pipeline that communicates vacuumize, learn degree of pressure by vacuum pressure sensor, at this moment material natural freezing in the process that vacuumizes, open the rotating shaft of charging tray 12 afterwards, make it do the level running, opening the 11 pairs of materials in heating using microwave source simultaneously heats, when material reaches uniform temperature, moisture in the material directly distils, and the pipeline 2-1 that the steam that is produced simultaneously links to each other with condenser 4 by freeze-drying chamber 1 is drawn in the condenser 4, and be frozen in the condenser 4 than on the low condenser 4-2 of temperature of charge, when the pressure on the pressure vacuum gauge shows not in rising, the dry end is described, close heating using microwave source 11 successively, vavuum pump 5, refrigeration unit 3, take out the heater 4-1 that opens in the condenser 4 after the material and remove the frost that is freezed on the condenser 4-2, open Draw off valve 4-3 when changing into water fully, water is flowed out, so that use next time.

Above-described only is preferred embodiment of the present utility model; should be understood that for the person of ordinary skill of the art; under technology enlightenment provided by the utility model, can also make other equivalent modifications and improvement, also should be considered as protection domain of the present utility model.

Claims

1. microwave freeze-drying machine, include freeze-drying chamber (1), refrigeration unit (3), it is characterized in that: the chamber wall in described freeze-drying chamber (1) is provided with heating using microwave source (11), the bottom in heating using microwave source (11) is provided with charging tray (12), freeze-drying chamber (1) is communicated with condenser (4), refrigeration unit (3) successively by first pipeline (2-1), and vavuum pump (5) is connected with condenser (4) by second pipeline (2-2).

2. microwave freeze-drying machine as claimed in claim 1 is characterized in that: described charging tray (12) below is provided with cold plate (13), and cold plate (13) is connected with refrigeration unit (3) by pipeline (2-3).

3. microwave freeze-drying machine as claimed in claim 1 or 2 is characterized in that: the heating using microwave source (11) in the described freeze-drying chamber (1) is multitube shape or single tube shape.

4. microwave freeze-drying machine as claimed in claim 1 or 2 is characterized in that: the bottom of the charging tray (12) in the described freeze-drying chamber (1) links to each other with motor (14), and charging tray (12) is a single or multiple lift.

5. microwave freeze-drying machine as claimed in claim 3 is characterized in that: when described heating using microwave source (11) is single tube shape, be connected to waveguide on it, have microwave feedback mouth in the waveguide.

6. microwave freeze-drying machine as claimed in claim 4 is characterized in that: described freeze-drying chamber (1) is provided with vacuum valve (6) with the connecting pipe (2-1) of condenser (4).

7. microwave freeze-drying machine as claimed in claim 6 is characterized in that: be provided with heater (4-1) and condenser (4-2) in described condenser (4), the bottom of condenser (4) is provided with Draw off valve (4-3).

8. microwave freeze-drying machine as claimed in claim 7 is characterized in that: the condenser (4-2) in the described condenser (4) is for twining the cylinder formula, and its operating temperature is lower than temperature of articles in the drying box.