Efficient freeze dryer capable of automatically defrosting

Abstract

The utility model relates to the field of freeze-drying equipment, in particular to an efficient freeze dryer capable of automatically defrosting, which is provided with a shell, a vacuum bin is arranged in the shell, a partition plate is arranged in the vacuum bin, a freeze-drying chamber and a refrigerating chamber are respectively arranged on two sides of the partition plate, a fan and an air inlet are arranged on the partition plate, the air direction of the fan is from the freeze-drying chamber to the refrigerating chamber, and the air inlet is communicated with the freeze-drying chamber. And a freeze-drying rack is arranged in the freeze-drying chamber. According to the utility model, the fan is arranged between the two chambers, before the freeze dryer works, the fan blows air to the refrigeration chamber where the coil pipe is located, and as the refrigeration chamber is sealed, the only air inlet capable of ventilating in the refrigeration chamber can continuously blow cold air to the freeze dryer rack, so that quick refrigeration is realized by precooling, the freeze-drying efficiency is greatly improved, and the labor intensity of workers is reduced. When the freeze dryer does not work, only the fan needs to be started independently, the outer side of the coil pipe can be defrosted by airflow, the coil pipe can be maintained, the service life of equipment is prolonged, no residual frost surface breeding bacteria are left on the outer side of the coil pipe, and food safety is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of freeze dryers, in particular to a high-efficiency freeze dryer capable of automatically defrosting. Background Art

[0002] Freeze drying is a drying technology that uses the principle of sublimation. It is a process in which the dried material is quickly frozen at low temperatures and then the frozen water molecules are directly sublimated into water vapor and escape in a vacuum environment.

[0003] The freeze dryer uses this principle, but the freeze drying chamber needs to be cooled down every time. This process takes a long time, which greatly reduces the efficiency of freeze drying.

[0004] Moreover, after long-term use, frost will form on the surface of the coil used for refrigeration in the freeze dryer, because the heat exchange of the freeze dryer coil is conducted through the outer wall. When the outer wall of the coil is covered with frost, it will hinder the heat exchange, which will not only increase power consumption, but also reduce the refrigeration effect. If it is not cleaned in time, the frost will accumulate more and more, and some low-temperature-loving bacteria will easily breed, which will produce odor and affect the freeze-dried food. Utility Model Content

[0005] In view of the above problems, the purpose of the utility model is to provide a high-efficiency freeze dryer capable of automatic defrosting, which has higher refrigeration efficiency and longer service life of the equipment.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is as follows: a high-efficiency freeze dryer with automatic defrosting, comprising a shell, a vacuum chamber is provided in the shell, a partition is provided in the vacuum chamber, a freeze drying chamber and a refrigeration chamber are provided on both sides of the partition, a fan and an air inlet are provided on the partition, the wind direction of the fan is from the freeze drying chamber to the refrigeration chamber, and a freeze drying rack is provided in the freeze drying chamber.

[0007] In the above technical solution, an air guide plate is provided on the upper part of the air inlet, and the air guide plate is arranged at an angle.

[0008] In the above technical solution, the freeze-drying rack includes multiple layers of shelves, the air inlet is arranged on the upper side of the corresponding shelf, and the air guide plate is inclined downward and toward the shelf.

[0009] In the above technical solution, a vacuum pump and a control box thereof are provided on the upper portion of the vacuum chamber, and the vacuum pump is connected to the vacuum chamber.

[0010] In the above technical solution, a frame is provided in the shell, and the vacuum chamber is arranged on the frame.

[0011] In the above technical solution, a heat-conducting coil is provided in the refrigeration chamber, and a coil bracket is provided between adjacent heat-conducting coils.

[0012] In the above technical solution, a compressor is provided at the lower part of the vacuum chamber, and the compressor is connected to the heat-conducting coil.

[0013] To sum up, the technical solution of the utility model has the following beneficial effects compared with traditional technical means: the utility model arranges a fan between the two chambers, and before the freeze dryer works, the fan blows air into the refrigeration chamber where the coil is located. Since the refrigeration chamber is sealed, the only air inlet in the refrigeration chamber that can ventilate will continuously blow cold air to the freeze dryer frame, thereby achieving pre-cooling to achieve rapid refrigeration, greatly improving the efficiency of freeze drying, and when the freeze dryer is not working, only the fan needs to be turned on separately, and the airflow can defrost the outside of the coil, maintain the coil, extend the service life of the equipment, and no frost will remain on the outside of the coil to breed bacteria, thereby ensuring food safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The foregoing and other objects, features and advantages of the present invention will become apparent from the following detailed description in conjunction with the accompanying drawings.

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0016] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model with one side of the shell removed;

[0017] Figure 3 It is a three-dimensional structural schematic diagram of the vacuum chamber in the utility model;

[0018] Figure 4 This is a schematic diagram of the internal three-dimensional structure of the vacuum chamber in the utility model;

[0019] Figure 5 It is a schematic diagram of the internal three-dimensional structure of the refrigeration chamber;

[0020] The numbers are as follows: 100, shell; 110, frame; 200, vacuum chamber; 300, partition; 310, fan; 320, air inlet; 330, air guide plate; 400, freeze-drying chamber; 410, freeze-drying rack; 411, shelf; 500, refrigeration chamber; 510, heat transfer coil; 520, coil bracket; 600, vacuum pump; 610, control box; 700, compressor. DETAILED DESCRIPTION

[0021] The following is an ideal embodiment of the utility model. Through the following description, relevant staff can make various changes and modifications without departing from the technical concept of the utility model. The technical scope of this utility model is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

[0022] The utility model is further described with reference to the following drawings:

[0023] like Figures 1 to 5 As shown, a high-efficiency freeze dryer with automatic defrosting is provided with a shell 100. A vacuum chamber 200 is provided in the shell 100. A partition 300 is provided in the vacuum chamber 200. A freeze drying chamber 400 and a refrigeration chamber 500 are provided on both sides of the partition 300. A fan 310 and an air inlet 320 are provided on the partition 300. The wind direction of the fan 310 is from the freeze drying chamber 400 to the refrigeration chamber 500. A freeze drying rack 410 is provided in the freeze drying chamber 400.

[0024] An air guide plate 330 is disposed on the upper portion of the air inlet 320 , and the air guide plate 330 is disposed at an angle.

[0025] The freeze-drying rack 410 includes a plurality of layers of panels 411 , the air inlet 320 is disposed above and on the side of a corresponding layer, and the air guide plate 330 is tilted downward and toward the layer 411 .

[0026] A vacuum pump 600 and a control box 610 thereof are disposed on the upper portion of the vacuum chamber 200 , and the vacuum pump 600 is connected to the vacuum chamber 200 .

[0027] A frame 110 is disposed in the housing 100 , and the vacuum chamber 200 is disposed on the frame 110 .

[0028] The refrigeration chamber 500 is provided with a heat conducting coil 510 , and a coil support 520 is provided between adjacent heat conducting coils 510 .

[0029] A compressor 700 is disposed at the lower portion of the vacuum chamber 200 , and the compressor 700 is connected to the heat conducting coil 510 .

[0030] When the utility model is used, the compressor 700 is first started, the heat conducting coil 510 cooperates with the fan 310 to refrigerate the material into ice crystals, and then the vacuum pump 600 is vacuumed, and finally the compressor 700 changes the mode, and the heating layer plate 411 sublimates the water in the material to achieve freeze drying.

[0031] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A high-efficiency freeze dryer capable of automatic defrosting, characterized in that: The invention has a shell, in which a vacuum chamber is arranged, in which a partition is arranged, and on both sides of the partition are a freeze-drying chamber and a refrigeration chamber respectively, a fan and an air inlet are arranged on the partition, and the wind direction of the fan is from the freeze-drying chamber to the refrigeration chamber, and a freeze-drying rack is arranged in the freeze-drying chamber.

2. The high-efficiency freeze dryer capable of automatic defrosting according to claim 1, characterized in that: An air guide plate is arranged on the upper part of the air inlet, and the air guide plate is arranged obliquely.

3. The high-efficiency freeze dryer capable of automatic defrosting according to claim 2, characterized in that: The freeze-drying rack comprises a plurality of layers of boards, the air inlets are arranged above and on the sides of the corresponding boards, and the air guide plates are inclined downward and toward the boards.

4. The high-efficiency freeze dryer capable of automatic defrosting according to claim 1, characterized in that: A vacuum pump and a control box thereof are arranged on the upper part of the vacuum chamber, and the vacuum pump is connected to the vacuum chamber.

5. The high-efficiency freeze dryer capable of automatic defrosting according to claim 1, characterized in that: A frame is arranged in the shell, and the vacuum chamber is arranged on the frame.

6. The high-efficiency freeze dryer capable of automatic defrosting according to claim 1, characterized in that: A heat-conducting coil is arranged in the refrigeration chamber, and a coil bracket is arranged between adjacent heat-conducting coils.

7. The high-efficiency freeze dryer capable of automatic defrosting according to claim 6, characterized in that: A compressor is provided at the lower part of the vacuum chamber, and the compressor is connected to the heat-conducting coil.

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