SU1330614A1 - Thermohygrostatic chamber - Google Patents

Abstract

The invention relates to the field of measurement technology, namely to. devices for calibration of thermometers, moisture meters, temperature and humidity sensors. The purpose of the invention is to accelerate the output of the thermohygrostat to the operating mode and improve the quality of thermostating. To this end, the cooler 13 of thermohygrostat is made of two containers 14 and 15 arranged in each other, closed by a lid. The tank 15 is filled with a refrigerant (carbon dioxide). The cavity between the containers 14 and 15 by partitions 17 is divided into two sections, isolated from each other, provided with inlet 18 and outlet 19 apertures. Sections by partitions 20 are divided into two communicating in the upper part of chamber 21 and 22. During thermostating, the fluid circulating in the system, through the inlet 18, enters the chamber 21 of the first section of the cooler 13. As the chamber 21 is filled, water contained in the fluid It freezes and, in the form of pellets of ice (sludge), settles to the bottom of chamber 21. When the chamber 21 is filled, the pure liquid flows through the partition 20 into the chamber 22 and fills it. The liquid cooled in amps 21 and 22 through the outlet 19 of the cooler 13 enters the thermostat 1 and washes the humidifier coil. The cooling of the hygrocamera is carried out in a similar manner. 2 Il. ln (L 00 o O) a.

Description

one

The invention relates to a measurement technique, in particular, to devices for calibration of thermometers, moisture meters, temperature and humidity sensors.

 The purpose of the invention is to accelerate the release of thermohygrostat to the operating mode and increase the accuracy of thermostatting.

Figure 1 shows thermohygrostat with a cooler, a vertical section; figure 2 - section aa in figure 1.

The thermohygrostat consists of two alcohol liquid thermostats 1 and 2, equipped with autonomous liquid circulation systems containing mixers 3 and 4, forward 5 and reverse 6 channels of thermostat 1; Direct 7 and inverse 8 channels of thermostat 2 are interconnected by respectively bypasses 9 and 10. Direct channels 5 and 7 are closed by gates 11 and 12. Thermostats 1 and 2 have a common cooler 13 consisting of two located concentric containers 1D and 15 (FIG. 2), closed with a lid 16. The tank 15 is filled with a refrigerant (carbon dioxide). The cavity between the capacitance partitions 17 is divided into two sections isolated from each other, provided with inlet 18 and outlet 19 openings of an autonomous fluid circulation system. Sections by partitions 20 are divided into two communicating in the upper part of the chamber 21 and 22.

The autonomous circulation system of the living space of the thermostat 1 is equipped with a stirrer 3 for mixing and a heater 23.

The autonomous fluid circulation system of the thermostat 2 is equipped with a stirrer for mixing and a heater 24.

A humidifier 25 is placed in thermostat 1, and a hygrocamera 26 is placed in a thermostat. A humidifier 25 is connected to a coil 28 located centrally to a hygrocamera 26 and the other end entering the cavity of the hygrocaler 26. a coil 31 entering the humidifier 25. Thus, a closed air circulation system, the humidifier — hygro chamber, is obtained.

The inlet thermostat 2 is provided with a manifold 32, connecting kits with the cavity of the thermostat 2 through holes 33

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3306K 2

Inside the hygrocannels 2b, devices 3 are placed. In the lid of thermostat 2 there is a plug connector 35 for remote devices and a transparent window 36 for visual readings from non-distance devices. The entire liquid circulation system is thermally insulated and enclosed in housing 37.

Thermohygrostat works in the following way

When the thermohygrostat is set to run, the thermostat 1 is cooled by circulating a liquid in an autonomous liquid thermostatic system. Stirring the liquid inside thermostat 1 and the liquid is provided by the stirrer 3. At that, the valve 11 in the forward channel 5 of thermostat 1 is fully open. The circulating fluid in the system, through channel 6 through the inlet 18, enters the chamber 21 of one of the cooler sections 13. As the chamber 21 is filled 5, the water contained in the liquid freezes and precipitates as ice pellets. Since the density of ice is greater than the density of the coolant (alcohol), ice grains (sludge) settle to the bottom of the chamber 21c. When the chamber 21 is filled, the pure liquid through the partition 20 flows into the chamber 22 and fills it. Cooled in chambers 21 and 22 the liquid through the outlet 19 of the cooler 13 enters the thermostat 1 and washes the coil 31 of the humidifier 25. The temperature of the liquid of the thermostat 1 is maintained automatically by turning on and off the heater 23, the heat flow from which compensates for the cooling of the liquid The intensity of mass exchange aditelem 13 in the thermostat 1 depends from the bypass 9 and the degree of overlap flap 11 forward channel 5. gigrokamery Cooling is effected in a similar manner.

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Getting the required relative

The humidity in the hygro chamber 26 at a given temperature is carried out in the closed air circulation system of the humidifier - hygro chamber. The air circulating in the system, under the action of the fan 30 through the pipe 29 of the hygrocamera 26 enters the coil 31, passes through the humidifier 25, pressures at a temperature close to the temperature of the liquid in the thermostat I, the temperature is maintained automatically by turning on and off the heater 23 , the heat flow from which compensates for the cooling of the fluid by the cooler 13,

Through the pipe 27, the air saturated in the humidifier 25 from the thermostat 1 enters the defroster 28 of the hygrocamera 26, where it acquires a temperature equal to the temperature of the liquid in the thermostat 2. From the coil 28 the air enters the hygrocamera 26 "

The test instruments 34 are placed in the hygrocamera 26, in the cap of which there is a 35 dp socket for connecting instruments having an electrical code and a transparent window 36 for visual readings of the readings of the instruments being turned.

By increasing the area of heat exchange, the cooler reduces by about 2 times the output of the thermohygrostat to the operating mode. The design of the cooler eliminates the possibility of discharge in the form of grains of ice (sludge) of water into the coolant circulation system, which improves the quality of thermostating, reduces

the inertia of thermohygrostat and eliminates the failure of the fluid circulation system.

Claims (1)

Invention Formula A thermohygrostat containing a humidifier and a hygrocamera connected by a closed air circulation system and placed in thermostats equipped with a heater, a cooler and autonomous fluid circulation systems including direct, return channels connected by bypasses, the thermostat of the hygrochamber on the inlet is provided with a collector connecting to the cavity thermostat openings located around the perimeter of the collector, characterized in that, in order to accelerate the output of the thermohygrostat to the operating mode and increase the accuracy of audio, a cooler is designed as a two koitsentr Cio arranged containers between which the cavity is divided perego1 odkami into two isolated sections, provided with n input output apertures autonomous systems | fluid circulation, each section being additionally divided by a partition into two communicating ones in the upper part of the chamber. (ABOUT Editor M. Dylyn Compiled by N. Mirna Tehred V. Kadar Order 3587./50 Circulation 863 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, Projecto st., A Proofreader M. Demchik