JPS6330919A - Temperature controlling method - Google Patents

Abstract

PURPOSE:To execute a temperature measurement and a control by one piece of temperature measuring element, to eliminate an error caused by a variance of an element characteristic in case of two pieces or more of temperature measuring elements and to simplify the adjustment by executing a temperature measurement by the temperature measuring element at every prescribed time, and comparing the temperature before and after its time. CONSTITUTION:When a temperature of a thermosensible body 1 of tntn+1...tn+m is denoted as TtnTtn+m by a temperature measuring element 2 which is attached to the thermosensible body 1, a control is executed as follows. Also, in such a state as a temperature which has been set by a temperature setting device 7 is denoted as Ts, a control signal is outputted so as to become Ts-TTn 0 and a temperature control object is controlled. Also, a peripheral object 4 is controlled so as to be brought close to a temperature Ttn of the thermosensible body 1 by a temperature control element 5, at the time point tn+m so as to become Ttn+m-Ttm 0 which is compared with the m-th temperature from (tn). Also, by executing such a repeated operation in the same way after the time (m), and by storing and comparing the temperature after the time (n) and the time (n+m) of one piece of the thermosensible element 2, the control is attained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a method for controlling the temperature of a high-speed rotating body, such as a centrifuge, in a non-contact manner.

[Background of the invention]

A normal non-contact thermometer has a heat sensitive body 1 as shown in Figure 2.
It consists of a temperature measuring element 2, a surrounding object 4 for cutting off energy from the surroundings, and an element (for example, a thermo module 1) for controlling the temperature of the temperature measuring element 8 and the surrounding object 4. In such a configuration, the temperature control element 5 is normally controlled so that the temperature of the temperature measuring element 8 of the surrounding object 4 approaches the temperature of the temperature measuring element 2 of the heat sensitive body 1 as much as possible. Measure the temperature as the temperature of the object. However, in this configuration, since two temperature measuring elements are required, errors will occur unless the characteristics of each temperature measuring element are matched. In addition, each measurement circuit is required and each adjustment must be made, which is inconvenient and increases costs.

[Purpose of the invention]

The object of the present invention is to eliminate the above-mentioned drawbacks of the prior art, simplify this type of temperature control method, and improve accuracy and ease of adjustment.

[Summary of the invention]

The present invention has focused on the fact that by measuring the temperature with the temperature measuring element at regular intervals and comparing before and after that time, it is possible to perform the functions equivalent to the two temperature measuring elements.

[Embodiments of the invention]

An embodiment of the invention is shown in FIG. Due to the temperature measuring element 21ζ attached to the heat sensitive body 1, tn tn+I tn+
Ttn Ttn++ −=−
, Ttn-I-ffl, control is performed as follows. In addition, in such a state where the temperature set by the temperature setting device 7 is ], in the present invention, Ts −Ttn→
The temperature control object is controlled by issuing a control signal so that the temperature becomes 0. Furthermore, the temperature of the surrounding object 4 is 'Itn+m-'Itrn-po compared with the temperature of the m-th point from jn.
At time n+m, the temperature control element 5 controls the temperature of the heat sensitive body 1 to approach Ttn. Moreover, by repeating the same operation after m hours, the temperature of one temperature sensing element 2 after n hours and n+m is not controlled by the temperature difference with the temperature sensing element 8 shown in FIG. 2 of the conventional example. Control is achieved by storing and comparing temperatures after hours. In reality, a circuit that can sufficiently compare n time and m time in the range of (), 2 seconds to 1) seconds can be easily created, so that the accuracy of the change can be maintained sufficiently.

〔Effect of the invention〕

According to the present invention, since temperature measurement and control are possible with one temperature measurement element, it is possible to eliminate errors due to variations in element characteristics when two or more temperature measurement elements are used, and to simplify Eu. .

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view showing an embodiment of the method of the present invention, and FIG.
The figure is a sectional view showing a conventional method. 1 is a heat sensitive body, 2 is a measuring element, 3 is a support rod, 4 is a surrounding object, 5 is a temperature control element, 6 is a controller, 7 is a temperature setting device, and 8 is a controller.

Claims (1)

[Claims] In a temperature measurement method that has a heat sensitive body that receives radiant energy from an object to be measured, and measures the temperature by bringing the temperature of objects surrounding the heat sensitive body close to the temperature of the heat sensitive body, the temperature measurement method uses only one temperature measuring element of the heat sensitive body and A temperature control method characterized by measuring the temperature of one temperature measuring element at regular intervals and storing the temperature to perform temperature control.