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Temperature adjusting and controlling method for minitype experiment period and special apparatus therefor

A special device and the technology of the experimental section, which is applied in the field of temperature regulation and temperature control, can solve the problems of low temperature control accuracy, large energy consumption, and small temperature regulation range, and achieve high temperature control accuracy, fast temperature regulation speed and wide temperature regulation range. wide effect

Inactive Publication Date: 2004-06-02
INST OF MECHANICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this kind of temperature adjustment device not only makes the temperature adjustment process take a long time, it is extremely unsuitable for the requirements of scientific experiments; and the temperature control accuracy of this method is low, and it cannot meet the requirements of scientific experiments; Large and small temperature adjustment range, it is difficult to create the harsh requirements put forward in scientific experiments, such as a low temperature environment close to 0 °C
In particular, it can be used in experiments such as trace liquid flow experiments, liquid viscosity determination or high-pressure liquid chromatography analysis, and there is no report on the miniature constant temperature device that can directly provide a stable and adjustable temperature environment for the experimental section.

Method used

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  • Temperature adjusting and controlling method for minitype experiment period and special apparatus therefor
  • Temperature adjusting and controlling method for minitype experiment period and special apparatus therefor

Examples

Experimental program
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Effect test

Embodiment 1

[0021] Attached figure 1 Make a special device suitable for the temperature regulation and temperature control method in the micro-test section. Take a rectangular copper plate with a length of 180mm as the metal body 1, and its cross-sectional area is 50mm×50mm; punch a hole with a diameter of 4mm in the middle along the long side direction , as the experimental section flow channel 13 for placing the experimental section, a pre-cooling / heating pipe 11 is inserted in the experimental section flow channel 13, and the front end of the tube is exposed outside the metal body 1, and the end is connected with a diameter of 0.1mm-4mm The experiment is connected with a capillary 12, and the rear end of the capillary is connected with a glass tube 14 for metering. A flat semiconductor cooler 2 is installed between the top of the metal body 1 and the radiator 3 with fins, or a cooling fan 4 can also be installed on the radiator 3 . The metal body 1 is covered with thermal insulation l...

Embodiment 2

[0023] On the device of embodiment 1, a flat semiconductor refrigerator 2 is adorned on the bottom surface of metal body 1 again; Radiator fin outside is equipped with cooling fan 4, and temperature sensor 7 is contained in the hole that is opened on metal body 1, The conventional temperature control instrument 8 controls the switching direction and switching time of the DC power supply 10 through the temperature control circuit 9 . When the temperature of the metal body 1 is higher than the set temperature of the temperature control instrument 8, the side of the semiconductor refrigerator 2 attached to the metal body 1 is the cold end, and the side close to the radiator is the hot end. The body 1 cools down; when the temperature of the metal body 1 is lower than the set temperature, by changing the connection direction of the DC power supply 10, the side of the semiconductor refrigerator 2 attached to the metal body 1 becomes the hot end, thereby heating the metal body 1 and t...

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Abstract

The present invention relates to temperature regulating and controlling method and special apparatus suitable for miniature experiment section. When the temperature of metal body is higher or lower than the temperature the temperature control instrument sets, the temperature controlling circuit will control the conversion of power supply polarity to make the temperature of the metal body within the range around the set temperature. The apparatus includes one metal body with experiment section flow channel, semiconductor refrigerator mounted on the metal body, heat sink set on the semiconductor refrigerator, heat isolating lay to cover the metal body except the part the semiconductor refrigerator is mounted; and temperature sensor fixed inside the hole in the metal body and connected to the temperature control instrument, with the heat sink being connected electrically to the DC power supply and the temperature control instrument via the temperature control circuit.

Description

technical field [0001] The invention relates to a method and a special device for temperature regulation and control, in particular to a method and a special device for temperature regulation and temperature control in a micro-experiment section used in a laboratory. Background technique [0002] In the micro-liquid flow experiment, the ambient temperature directly affects the flow characteristics of the liquid in the micro-channel (the experiment generally uses a micron-diameter capillary). In order to adjust and stabilize the ambient temperature of the experimental section, it is usually achieved by controlling the temperature in the laboratory room (using an air conditioner) or using a method and equipment for a local temperature control box, and such temperature control devices are available on the market. But this kind of temperature adjustment device not only makes the temperature adjustment process take a long time, it is extremely unsuitable for the requirements of s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01L7/00F25B21/02
Inventor 李战华刘宗源覃裕平刘彬
Owner INST OF MECHANICS - CHINESE ACAD OF SCI
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