SU126647A1 - The method of controlling the thermal insulation properties of thermoses and device for its implementation - Google Patents

Description

The usual way to control the thermoisolation properties of thermos flasks is that the finished thermos flasks are filled with a K-type and are kept for a long time, after which the temperature of the flasks is measured. This method requires a significant amount of time and large production areas.

The newly proposed method differs from the well-known one in that it speeds up the control process with less production space required.

Its essence is as follows.

Thermos flasks without water can withstand, for example, 15 minutes. in a constant temperature campré (about 100) for heating them outside, and then the temperature inside the flasks is measured.

The device for carrying out this method is made in the form of a thermally insulated electrically heated chamber, a conveyor for advancing the flasks through the chamber and a thermal measuring instrument for measuring the temperature inside the flasks.

FIG. I shows the device as a whole; in fig. 2 - diagram of the measuring instrument.

The device includes a conveyor, the working circuit (of which is driven by an electric motor with a gearbox 2) and moves the wire baskets with thermos flasks 3 along guides /. When the flask is moved, it passes through a thermal insulating chamber 5 made of ceramic plates with Δ-grooves for electric heating elements and with a thermal insulating casing. The temperature inside the chamber is 100 ° C and is kept constant by means of a temperature controller.

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  output ia) itui of chamber 5, a temperature measuring device 6 is installed, an oscillator from a potentiometer 7 of direct current and a honey-constantanosis thermocouple 8. To ensure the same temperature, it is immersed in vessel 9 with ice and ice, and Biopoir criaii serves as .hergenes of temperature inside the controlled TepMooiioii flask1) | .. After the temperature in chamber 5 has reached the set temperature (about 00), in a thermos flask, eni, e not passing through the chamber, immerse the measuring junction of the thermocouple 5 and set the potentiometer arrow to zero. Then baskets with flasks 3 without water, aged; At room temperature, they are passed through chamber 5, in which they are held for 15 minutes. under the influence of temperature 100 and heated outside. Upon the exit of the flasks from the chamber, in each of them I will plunge: the measuring junction of the thermocouple 8 a 10-15 seconds to a strictly defined depth. and according to the degree of OPENING, the arrows of potentiometer 7 determine the thermal insulation properties of thermoses.

Subject invention

Claims (2)

1. The method of controlling the thermal insulation properties of thermal atmospheres, separately and so that, in order to accelerate the control process with a smaller required production area, heat-sealed flasks without water accumulate, for example, 15 minutes. in a chamber with a constant temperature of 100 °) for heating them outside, and then the temperature inside the flasks is measured. 2. A device for carrying out the method according to claim 1, characterized in that it is made in the form of a thermal insulation chamber with electric heating, a conveyor for advancement and flasks through the chamber of a thermometer measuring device for measuring the temperature inside the flasks.