CN218627510U - Vacuum freeze dryer - Google Patents

Abstract

A vacuum freeze dryer comprises a tray for placing articles, a freezing box for freezing the articles in the tray and a drying box for drying the frozen articles, wherein the freezing box is connected with a refrigerating device, and a plurality of supporting plates matched with the tray are arranged in the freezing box; the drying oven is connected with a vacuumizing pipeline, a cold trap and a vacuum pump are installed on the vacuumizing pipeline, a first vacuum control valve is installed on the vacuumizing pipeline between the cold trap and the drying oven, a second vacuum control valve is installed on the vacuumizing pipeline between the cold trap and the vacuum pump, a plurality of fixing plates matched with the tray are installed in the drying oven, and a heating plate used for heating the articles is further installed on the fixing plates. This application simple structure, simple to operate, energy loss are few, help improving the freeze drying efficiency to article.

Description

Vacuum freeze dryer

Technical Field

The utility model relates to a vacuum freeze-drying technical field, especially a vacuum freeze dryer.

Background

In the current market, freeze dryers are mainly divided into medical freeze dryers and food freeze dryers in terms of application, and mainly adopt a technology for drying by utilizing a sublimation principle, namely a process of quickly freezing a dried substance at a low temperature and then directly sublimating frozen water molecules into water vapor to escape under a proper vacuum environment; however, most of the heat-conducting media of the existing freeze dryers use silicone oil or water, most of the heat-conducting media are heated by steam or electric heating tubes, the indirect heating is adopted, the energy loss is large, various pipelines are required to be connected and matched to prevent the heat-conducting media from leaking, the structure is complex, the installation is inconvenient, and the requirement is high.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that to prior art not enough, provide a simple structure, be convenient for installation, energy loss is few, help raising the efficiency vacuum freeze dryer.

The technical problem to be solved by the utility model is realized through the following technical scheme. The utility model relates to a vacuum freeze dryer, which comprises a tray for placing articles, a freezing box for freezing the articles in the tray and a drying box for drying the frozen articles, wherein the freezing box is connected with a refrigerating device, and a plurality of supporting plates matched with the tray are arranged in the freezing box; the drying oven is connected with a vacuumizing pipeline, a cold trap and a vacuum pump are installed on the vacuumizing pipeline, a first vacuum control valve is installed on the vacuumizing pipeline between the cold trap and the drying oven, a second vacuum control valve is installed on the vacuumizing pipeline between the cold trap and the vacuum pump, a plurality of fixing plates matched with the tray are installed in the drying oven, and a heating plate used for heating the articles is further installed on the fixing plates.

The utility model aims to solve the technical problem can also be further realized through following technical scheme, to above vacuum freeze dryer, the hot plate adopts microcrystalline glass to add the semiconductor and makes, still is provided with the thermal coating in the outside of hot plate.

The utility model discloses the technical problem that solve can also further realize through following technical scheme, to above the vacuum freeze dryer, the hot plate is the cuboid form.

The utility model discloses the technical problem that solve can also further realize through following technical scheme, to above vacuum freeze dryer, the hot plate passes through the elasticity preforming and installs on the fixed plate, still is provided with external power supply's wiring on the hot plate.

The utility model discloses the technical problem that will solve can also further realize through following technical scheme, to above vacuum freeze dryer, still be provided with transparent window on the drying cabinet.

The utility model discloses the technical problem that solve can also further realize through following technical scheme, to above the vacuum freeze dryer, the tray is the stainless steel tray.

The utility model aims to solve the technical problem can also be further realized through following technical scheme, to above vacuum freeze dryer, first vacuum control valve, second vacuum control valve are motorised valve or pneumatic valve.

The utility model discloses the technical problem that solve can also further realize through following technical scheme, to above vacuum freeze dryer, refrigerating plant is the refrigerator.

Compared with the prior art, the beneficial effects of the utility model are that:

1. by arranging the freezing box and the drying box, the device can quickly freeze and dry the articles respectively, and has good effect and high efficiency;

2. the heating plate is arranged in the drying box, so that articles can be directly heated, energy loss is low, efficiency is high, a traditional heating pipeline for pumping water or oil by a pump is eliminated, the installation is convenient, and meanwhile, medium leakage is avoided;

3. the heating plate of this application is microcrystalline glass and the heating source that semiconductor heating coating constitutes, mainly gives article heating through thermal radiating conduction mode, and the temperature control precision is high, is convenient for carry out even drying process to article.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the heating plate of the present invention;

fig. 3 is a schematic view of the installation structure of the heating plate of the present invention.

Detailed Description

To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the attached drawings of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are part of the embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

Referring to fig. 1 to 3, a vacuum freeze dryer comprises a tray 1 for placing articles, a freezing box 2 for freezing the articles in the tray 1, and a drying box 3 for drying the frozen articles, wherein the tray 1 is used for containing the articles to be processed, so that the freeze drying of the articles is not influenced, and the articles are convenient to move, preferably, the tray 1 is a stainless steel tray 1, and is firm, reliable, not easy to deform, corrosion-resistant and convenient to clean;

the freezing box 2 is used for rapidly freezing the articles so as to facilitate subsequent drying, and particularly, a plurality of supporting plates 4 matched with the tray 1 are arranged in the freezing box 2 so as to facilitate the placement of the tray 1 containing the articles so as to place the articles in the freezing box 2, and a refrigerating device 6 is connected to the freezing box 2 and used for rapidly cooling the freezing box 2 so as to rapidly freeze the articles in the freezing box 2; preferably, the refrigerating device 6 is a refrigerator;

the drying box 3 is used for drying the frozen articles, specifically, a plurality of fixing plates 5 matched with the tray 1 are arranged in the drying box 3, so that the tray 1 containing the articles can be conveniently placed, the articles can be placed in the drying box 3, a heating plate 12 for heating the articles is also arranged on the fixing plates 5, and the heating plate 12 is in contact with the tray 1 to directly heat the articles in the tray 1; the drying box 3 is connected with a vacuumizing pipeline 7 for vacuumizing the drying box 3, so that the articles in the drying box 3 are in a proper vacuum environment, the drying box is convenient to be matched with the heating plate 12, and the frozen water molecules on the articles are directly sublimated into water vapor and escape outwards, so that the articles are quickly dried;

specifically, a cold trap 8 and a vacuum pump 9 are installed on the vacuumizing pipeline 7, a first vacuum control valve 10 is installed on the vacuumizing pipeline 7 between the cold trap 8 and the drying box 3, and a second vacuum control valve 11 is installed on the vacuumizing pipeline 7 between the cold trap 8 and the vacuum pump 9; preferably, the first vacuum control valve 10 and the second vacuum control valve 11 are both electric valves or pneumatic valves, which is convenient for operation; the vacuum pump 9 is used for vacuumizing the drying box 3 through the cold trap 8; the cold trap 8 is arranged and used for condensing the water vapor discharged by the adsorption drying box 3, preventing the water vapor from entering the vacuum pump 9, protecting the vacuum pump 9 and improving the working efficiency of the vacuum pump 9; when the drying box is actually used, the middle coil of the cold trap 8 is connected with the refrigerating device 6, and the low-temperature coil plays a role in capturing water vapor sublimated by the drying box 3 in the cold trap 8 to frost the water vapor;

specifically, the heating plate 12 is made of microcrystalline glass and a semiconductor, and a thermal coating is arranged on the outer side of the heating plate 12, so that articles can be directly heated in a thermal radiation conduction mode and directly installed in the drying box 3, energy loss is low, installation is convenient, a traditional heating pipeline for pumping water or oil is eliminated, and medium leakage is thoroughly avoided;

preferably, the heating plate 12 is rectangular and is convenient to support and match with the tray 1, the heating plate 12 is installed on the fixing plate 5 through an elastic pressing sheet, and a wiring 13 of an external power supply is further arranged on the heating plate 12.

During the in-service use, for the convenience of the dry change of the clear observation article in the operation process, still be provided with transparent window on drying cabinet 3, transparent window adopts high printing opacity colorless transparent organic glass, the outside of being convenient for is observed.

During the use, place article on tray 1 earlier, fill the back at tray 1, put into freezing case 2 together with article with tray 1, and open refrigerating plant 6 and carry out the refrigeration treatment to freezing case 2, make article freeze fast, after the article is totally crystallized, with article in the drying cabinet 3 of going into, open hot plate 12 and vacuum pump 9, heat drying cabinet 3, the evacuation is handled, make the hydrone that freezes on the article directly sublimate into vapor and escape, in order to realize the drying process of article, the vapor that escapes gets into the frosting on the coil pipe in cold trap 8, follow-up defrosting is handled, finally, article after drying take out can.

Claims (8)

1. A vacuum freeze dryer characterized by: the freezing box is connected with a refrigerating device, and a plurality of supporting plates matched with the tray are arranged in the freezing box; the drying oven is connected with a vacuumizing pipeline, a cold trap and a vacuum pump are installed on the vacuumizing pipeline, a first vacuum control valve is installed on the vacuumizing pipeline between the cold trap and the drying oven, a second vacuum control valve is installed on the vacuumizing pipeline between the cold trap and the vacuum pump, a plurality of fixing plates matched with the tray are installed in the drying oven, and a heating plate used for heating the articles is further installed on the fixing plates.

2. The vacuum freeze dryer of claim 1, wherein: the heating plate is made of microcrystalline glass and a semiconductor, and a thermal coating is arranged on the outer side of the heating plate.

3. The vacuum freeze dryer according to claim 1 or 2, characterized in that: the heating plate is cuboid.

4. The vacuum freeze dryer according to claim 1 or 2, characterized in that: the heating plate is installed on the fixing plate through the elastic pressing sheet, and a wiring of an external power supply is further arranged on the heating plate.

5. The vacuum freeze dryer according to claim 1, wherein: a transparent window is also arranged on the drying box.

6. The vacuum freeze dryer of claim 1, wherein: the tray is a stainless steel tray.

7. The vacuum freeze dryer according to claim 1, wherein: the first vacuum control valve and the second vacuum control valve are both electric valves or pneumatic valves.

8. The vacuum freeze dryer of claim 1, wherein: the refrigerating device is a refrigerator.

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