Freeze dryer

Abstract

The utility model relates to the technical field of biological medicine technologies, in particular to a freeze dryer which comprises a dryer body, the dryer body comprises a freeze-drying bin and a bin door, the freeze dryer further comprises an air blower, the air blower is connected with an air guide box, an electric heater used for heating air in the air guide box is installed on the air guide box, an exhaust pipe is arranged in the freeze-drying bin, and the exhaust pipe is connected with the air blower. An air outlet of the air guide box is communicated with the exhaust pipe, and a plurality of exhaust holes are formed in the exhaust pipe. The unfreezing device has the effect of improving the unfreezing efficiency of the freeze-drying bin.

Description

Technical Field

[0001] The present application relates to the field of biomedical technology, and in particular to a freeze dryer. Background Art

[0002] At present, freeze dryer is a commonly used drying equipment in biomedical experiments. It uses sublimation reaction in a high vacuum state to directly convert ice in the material into water vapor, thereby achieving the purpose of freeze drying.

[0003] The experiment must not be disturbed by the outside world. After the experiment is completed, the experimenter takes the materials out of the freeze dryer. At this time, because the door of the freeze drying chamber is open, a large amount of frost is generated on the partitions and inner walls of the freeze drying chamber due to contact with the air. If the frost is thawed naturally, it will take a long time, which will also affect the work efficiency. Utility Model Content

[0004] In order to improve the thawing efficiency of the freeze-drying chamber, the present application provides a freeze dryer.

[0005] The freeze dryer provided in this application adopts the following technical solution:

[0006] A freeze dryer comprises a machine body, wherein the machine body comprises a freeze drying chamber and a chamber door, and also comprises a blower, wherein the blower is connected to an air guide box, an electric heater for heating the gas in the air guide box is installed on the air guide box, an exhaust duct is arranged in the freeze drying chamber, an air outlet of the air guide box is connected to the exhaust duct, and a plurality of exhaust holes are arranged on the exhaust duct.

[0007] By adopting the above technical solution, when the warehouse door is opened, the experimenter turns on the blower and the electric heater, passes the hot air into the exhaust duct, and finally discharges the hot air from the exhaust hole into the freeze-drying warehouse for thawing, thereby improving work efficiency.

[0008] Optionally, the electric heater includes a plurality of heating wires arranged in the air guide box.

[0009] By adopting the above technical solution, the heating wire is used to heat the air and expand the heating range.

[0010] Optionally, the air guide box includes an outer shell and a plurality of partitions arranged in the outer shell, and the plurality of partitions divide the inner space of the outer shell into serpentine air ducts.

[0011] By adopting the above technical solution, the air can be heated and discharged in a centralized manner.

[0012] Optionally, the air outlet of the air guide box is connected to an air supply pipe, the air supply pipe is passed through the machine body and extends into the freeze-drying chamber, a connecting pipe is provided between the air supply pipe and the exhaust pipe, the connecting pipe includes two joints and a hose connected between the two joints.

[0013] By adopting the above technical solution, the connection between the air supply pipe and the exhaust pipe is facilitated, and the replacement of the exhaust pipe is facilitated.

[0014] Optionally, the exhaust pipe includes an exhaust main pipe and a plurality of exhaust branch pipes, and the exhaust holes are arranged on the exhaust branch pipes.

[0015] By adopting the above technical solution, multiple exhaust branch pipes work together to improve drying efficiency.

[0016] Optionally, two air induction plates in an eight-shaped shape are provided on the exhaust branch pipe, and the two air induction plates are located on both sides of the exhaust hole.

[0017] By adopting the above technical solution, the setting of the air induced plate facilitates the concentration of wind force to improve the drying efficiency.

[0018] Optionally, a buckle is provided on the inner wall of the freeze-drying chamber, and the exhaust pipe is detachably fixed to the buckle.

[0019] By adopting the above technical solution, the provision of the buckle facilitates the installation or removal of the exhaust duct.

[0020] In summary, the present application includes at least one of the following beneficial technical effects:

[0021] 1. When the door is opened, the experimenter turns on the blower and electric heater to pass the hot air into the exhaust pipe, and finally discharges it into the freeze-drying chamber through the exhaust hole for thawing, thereby improving work efficiency;

[0022] 2. The heating wire is used to heat the air and expand the heating range;

[0023] 3. The setting of the air induced plate facilitates the concentration of wind force to improve drying efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of a freeze dryer according to an embodiment of the present application.

[0025] Figure 2 It is a cross-sectional view of the air guide box of an embodiment of the present application.

[0026] Figure 3 It is a schematic diagram of the structure of the freeze-drying chamber of an embodiment of the present application.

[0027] Figure 4 It is a schematic diagram of the structure of the buckle of an embodiment of the present application.

[0028] Explanation of the reference numerals: 1. machine body; 10. freeze-drying chamber; 11. chamber door; 2. blower; 3. electric heater; 30. electric heating wire; 4. air guide box; 40. casing; 41. partition; 5. air supply pipe; 6. exhaust pipe; 60. exhaust main pipe; 61. exhaust branch pipe; 610. exhaust hole; 62. air inlet plate; 7. connecting pipe; 70. joint; 71. hose; 8. buckle; 80. connecting part; 81. clamping part; 82. screw. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1 -Attached Figure 4 This application is described in further detail.

[0030] The present application embodiment discloses a freeze dryer. Figure 1 A freeze dryer includes a machine body 1, which includes a freeze drying chamber 10 for holding materials, a chamber door 11 and other functional components. A blower 2, an electric heater 3 and an air guide box 4 are also installed on the side wall of the freeze dryer body 1.

[0031] Reference Figure 1 and Figure 2 The air outlet of the blower 2 is connected to the air guide box 4, and the electric heater 3 acts on the air guide box 4. The air guide box 4 includes a shell 40, and a plurality of partitions 41 are arranged at intervals in the shell 40. The plurality of partitions 41 divide the space in the shell 40 into a serpentine channel. The electric heater 3 is installed on the air guide box 4, and the electric heater 3 includes a plurality of heating wires 30, which are inserted into the air guide box 4, and one heating wire 30 is arranged between two adjacent partitions 41.

[0032] Reference Figure 1 and Figure 3 An air delivery pipe 5 for conducting hot air is installed on the housing 40, and the air delivery pipe 5 is arranged through the machine body 1 and extends into the freeze drying chamber 10. An exhaust pipe 6 for releasing hot air is arranged on the inner wall of the freeze drying chamber 10, and the exhaust pipe 6 includes a horizontally arranged exhaust main pipe 60 and a plurality of vertically arranged exhaust branch pipes 61 connected to the exhaust main pipe 60. A plurality of exhaust holes 610 are evenly opened on the side wall of the exhaust branch pipe 61 along the length direction of the exhaust branch pipe 61, and the exhaust holes 610 are arranged toward the center direction of the freeze drying chamber 10.

[0033] Reference Figure 3 In order to concentrate the wind force and improve the drying efficiency, two air induction plates 62 are vertically fixed on each exhaust branch pipe 61. The two air induction plates 62 are located on both sides of the exhaust hole 610, and the two air induction plates 62 are arranged in an eight-shaped shape.

[0034] Reference Figure 3 and Figure 4In order to facilitate the installation or removal of the exhaust pipe 6, a connecting pipe 7 is detachably installed between the air supply pipe 5 and the exhaust pipe 6. The connecting pipe 7 includes two rotating joints 70, and a corrugated hose 71 is connected between the two joints 70. A plurality of buckles 8 for fixing the exhaust branch pipe 61 are transversely arranged on the inner wall of the freeze-drying chamber 10. The buckle 8 includes a connecting portion 80, a clamping portion 81 and a screw 82.

[0035] Reference Figure 4 The connecting portion 80 is arranged in contact with the inner wall of the freeze-drying chamber 10 and fixed by screws 82. Two clamping portions 81 are provided and fixed to both ends of the connecting portion 80. The clamping portions 81 are elastic and arc-shaped. The two clamping portions 81 cooperate with each other to clamp and fix the exhaust branch pipe 61. When the exhaust pipe 6 needs to be replaced, the experimenter first removes the connecting pipe 7, and then directly removes the exhaust pipe 6 from the buckle 8.

[0036] The implementation principle of a freeze dryer in the embodiment of the present application is as follows: when the door 11 is opened, the experimenter can control the blower 2 and the electric heater 3 to start, the blower 2 blows air into the air guide box 4, the air is heated by the electric heating wire 30 when passing through the serpentine channel, the heated air enters the exhaust pipe 6 and is discharged through the exhaust hole 610, thereby blowing hot air into the freeze drying chamber 10 to accelerate the thawing of frost, thereby improving work efficiency. If the exhaust pipe 6 needs to be replaced, first remove the connecting pipe 7, then remove the exhaust pipe 6 from the buckle 8, and then install the new exhaust pipe 6 by reverse operation, which is simple and convenient for the experimenter to operate.

[0037] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A freeze dryer, comprising a machine body (1), wherein the machine body (1) comprises a freeze drying chamber (10) and a chamber door (11), characterized in that: The freeze-drying chamber (10) further comprises a blower (2), the blower (2) being connected to an air guide box (4), the air guide box (4) being provided with an electric heater (3) for heating the gas in the air guide box (4), an exhaust pipe (6) being provided in the freeze-drying chamber (10), the air outlet of the air guide box (4) being connected to the exhaust pipe (6), and a plurality of exhaust holes (610) being provided on the exhaust pipe (6).

2. A freeze dryer according to claim 1, characterized in that: The electric heater (3) comprises a plurality of electric heating wires (30) arranged in an air guide box (4).

3. A freeze dryer according to claim 1 or 2, characterized in that: The air guide box (4) comprises an outer shell (40) and a plurality of partitions (41) arranged in the outer shell (40), wherein the plurality of partitions (41) divide the inner space of the outer shell (40) into a serpentine air duct.

4. A freeze dryer according to claim 1, characterized in that: The air outlet of the air guide box (4) is connected to an air supply pipe (5), the air supply pipe (5) is passed through the machine body (1) and extends into the freeze-drying chamber (10), a connecting pipe (7) is provided between the air supply pipe (5) and the exhaust pipe (6), and the connecting pipe (7) includes two joints (70) and a hose (71) connected between the two joints (70).

5. A freeze dryer according to claim 4, characterized in that: The exhaust pipe (6) comprises an exhaust main pipe (60) and a plurality of exhaust branch pipes (61), and the exhaust holes (610) are arranged on the exhaust branch pipes (61).

6. A freeze dryer according to claim 5, characterized in that: The exhaust branch pipe (61) is provided with two air induction plates (62) in an eight-shaped shape, and the two air induction plates (62) are located on both sides of the exhaust hole (610).

7. A freeze dryer according to claim 5, characterized in that: A buckle (8) is provided on the inner wall of the freeze-drying chamber (10), and the exhaust pipe (6) is detachably fixed to the buckle (8).

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