Method and apapratus for temperature circulation control

A temperature cycle and temperature control technology, applied in the direction of temperature control, non-electric variable control, control/regulation system, etc., can solve the problems of large loss of power, slow response, low efficiency, etc., to achieve energy saving, accurate and fast control, The effect of reducing power consumption

Inactive Publication Date: 2004-11-24
DALIAN UNIV OF TECH
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  • Abstract
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Problems solved by technology

Since the cooling power of the semiconductor thermoelectric cooling device depends on the temperature difference between its two sides, this invention only uses fans for heat dissipation and cooling, and cannot accurately and quickly control the heating and cooling process
The existin

Method used

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  • Method and apapratus for temperature circulation control
  • Method and apapratus for temperature circulation control
  • Method and apapratus for temperature circulation control

Examples

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Embodiment Construction

[0014] The specific implementation manner of an embodiment will be described in detail below in conjunction with the accompanying drawings.

[0015] The bonding process of a plastic microfluidic chip requires temperature control between 40°C and 105°C, and the temperature rise and fall rate is 30°C per minute. exist figure 1 In the installation diagram shown, the temperature control plate 1 that is in direct contact with the chip is a copper plate, and 4 semiconductor thermoelectric cooling devices 2 are selected, and the maximum cooling power of each piece is 80W. The regenerative oil tank made of heat-conducting material is an aluminum shell, filled with engine oil, and its heat capacity is about 10 times that of the temperature control board. Thermal conductive silicone rubber 4 is placed between the bottom of the oil tank and the semiconductor thermoelectric cooling device, and between the upper part of the temperature control plate and the semiconductor thermoelectric co...

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Abstract

The present invention relates to temperature control. The temperature control method is to adopt electric heater or circular water cooler to control temperature of heat accumulating oil tank, to adopt thermocouple temperature sensor to detect temperature of heat accumulating oil tank and to control temperature of temperature controlling board circularly. Altering the direction of current in semiconductor thermoelectric refrigerating device can realize heating or cooling of the temperature controlling board. The circular temperature controlling device consists of electric heater, heat accumulating oil tank, circular water cooler and thermocouple, and may have also heat conducting temperature controlling board, semiconductor thermoelectric refrigerating device, platinum resistive temperature sensor, heat conducting silicon resin rubber and heat isolating material. The present invention can lower power consumption, save power, control temperature fast and precisely.

Description

technical field [0001] The temperature cycle control method and device of the invention belong to the field of temperature control, and relate to a temperature control method and device using a semiconductor thermoelectric cooling device. Background technique [0002] In the manufacturing process of plastic microfluidic chips, the thermocompression forming of the microchannels on the plastic chip and the bonding of the substrate and the cover sheet require not only pressure control, but also temperature cycle control. At present, electric heaters are usually used for temperature rise control and circulating water cooling for temperature drop control. The delay time is long, the response is slow, and it is impossible to accurately control according to the required temperature rise and fall curves, which affects the quality and stability of the chips produced. [0003] The semiconductor thermoelectric cooling device is based on the Peltier effect. It is composed of P-type and ...

Claims

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Application Information

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IPC IPC(8): G05D23/24
Inventor 王晓东刘冲王立鼎马骊群于同敏韩建超王钧姚广军
Owner DALIAN UNIV OF TECH
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