A Directional Freezing Device Utilizing Liquid Nitrogen
A technology of directional freezing and liquid nitrogen, which is applied in household refrigeration equipment, refrigeration equipment isolation, application, etc., can solve problems affecting test results, etc., and achieve the effect of convenient operation, novel structure and high degree of automation
Inactive Publication Date: 2018-06-08
SHANGHAI INST OF TECH
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[0003] The purpose of the present invention is to solve the above shortcomings and provide a directional freezing device using liquid nitrogen, which not only solves the problem of affecting the test results due to the height of liquid nitrogen, but also has a high degree of automation, very convenient operation and high reliability
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[0011] Below in conjunction with accompanying drawing, the present invention will be further described as follows:
[0012] as attached figure 1 As shown, the present invention comprises: U-shaped tube 2, air compressor 3, precise control timing program controller 4 and liquid nitrogen bottle 5, liquid nitrogen 6 is contained in the liquid nitrogen bottle 5, and the inlet end of liquid nitrogen bottle 5 passes through The seam steel pipe 7 is connected to the U-shaped pipe 2, and the other end of the U-shaped pipe 2 is connected to the outlet end of the liquid nitrogen bottle 5 through the seamless steel pipe 7. The outlet end of the liquid nitrogen bottle 5 is equipped with a solenoid valve-9, and the solenoid valve-9 is connected to the outlet end of the liquid nitrogen bottle 5. The seamless steel pipe 7 between the U-shaped pipes 2 is connected with an air compressor 3 through a pipeline, and the pipeline between the air compressor 3 and the seamless steel pipe 7 is equipp...
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The invention relates to a directed freezing device using liquid nitrogen, which comprises a U-shaped tube (2), an air compressor (3), a precise control timing program controller (4) and a liquid nitrogen cylinder (5); an inlet end of the liquid nitrogen cylinder (5) is connected with the U-shaped tube (2) by a seamless steel pipe (7); the other end of the U-shaped tube (2) is connected with an outlet end of the liquid nitrogen cylinder (5); the outlet end of the liquid nitrogen cylinder (5) is provided with a solenoid valve I (9); the air compressor (3) is connected onto the seamless steel pipe (7) between the solenoid valve I (9) and the U-shaped tube (2) by a pipeline; a solenoid valve II (10) is arranged on a pipeline between the air compressor (3) and the seamless steel pipe (7); the air compressor (3), the solenoid valve I (9) and the solenoid valve II (10) are respectively connected with the precise control timing program controller (4) by a wire; a metal rod (8) is arranged in the U-shaped pipe (2) in a penetrating manner. The directed freezing device using liquid nitrogen solves the problem that a test result is affected due to high concentration of the liquid nitrogen, and is high in automation degree, very convenient to operate and high in reliability.
Description
[technical field] [0001] The invention relates to the technical field of freezing equipment, in particular to a directional freezing device utilizing liquid nitrogen. [Background technique] [0002] At present, liquid nitrogen is usually used for cooling in the laboratory, but the liquid nitrogen is directly output from the liquid nitrogen bottle, and the liquid nitrogen will affect the test results due to the height change in the bottle. Therefore, it will be of great significance if a directional freezing device utilizing liquid nitrogen can be provided so that the test results will not be affected by the height of liquid nitrogen. [Content of the invention] [0003] The purpose of the present invention is to solve the above shortcomings and provide a directional freezing device using liquid nitrogen, which not only solves the problem of affecting the test results due to the height of liquid nitrogen, but also has a high degree of automation, very convenient operation an...
Claims
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IPC IPC(8): F25D3/10F25D23/06
CPCF25D3/10F25D23/06F25D2201/10
Inventor 张利安子良侯梅芳庄榆佳虞琴张波董浩
Owner SHANGHAI INST OF TECH