SU937911A1 - Electrode-type liquid heater - Google Patents

Description

(5) ELECTRODE LIQUID HEATER

t

The invention relates to the technique of direct conversion of electric energy into heat, namely to electrode heaters of a liquid, and can be used to manufacture various types of electrical heaters and apparatuses.

A liquid electric heater is known that comprises a vertical grounded electrically conductive housing provided with lower and upper respectively inlet and outlet pipes and an electrode tank mounted around it, and a compensation tank, the shell being made of a dielectric and suspended from the float located in the upper part of the housing eleven.

The disadvantage of the known electro. fluid heater is the complexity of the design associated with the presence of moving inside the case

details, and also the sensitivity to temperature changes of the heated fluid is not high enough.

Also known is an electrode fluid heater, containing electrodes coaxially mounted with the formation of an annular chamber, which are located along the axis of a hermetically sealed enclosure at the top, equipped with supply and

tQ outlets and communicated with compensation capacity f 2j.

The disadvantage of this electrode fluid heater is its low sensitivity to changes.

15 the temperature of the heated fluid with a sufficiently large resistivity.

The purpose of the invention is to increase the sensitivity of the device 20 and reduce the resistivity of an applied electrically conductive liquid.

Claims (2)

The goal is achieved by the fact that the annular chamber between the electrodes is connected to the lower part of the body cavity and filled with heat-resistant granules, non-deforming electrically insulating material that is chemically inert to the heated fluid. The drawing schematically shows the electrode fluid heater. Electrode fluid heater contains coaxially mounted electrodes 1 and 2, forming an annular chamber 3 Electrodes 1 and 2 are placed along the housing k, which is hermetically sealed from above, with supply 5 and discharge 6 nozzles and a compensation capacitance 7 "The annular chamber 3 between the electrodes 1 and 2 communicates the lower part with cavity 8 of body k and is filled with granules 9 of heat-resistant, non-deforming, electrically insulating material chemically inert to the heated liquid. Electrode fluid heater works as follows. When voltage is applied to electrodes 1 and 2, the electrically conductive liquid in the annular chamber 3 is heated, according to the law / ole of Lenz. At the initial moment, the electric power of the device increases due to a decrease in the resistivity of the liquid in the annular chamber 3 with increasing temperature. After the onset of intense evaporation of the liquid of the annular chamber, 3 pairs rise in; the upper part of the hermetically sealed annular chamber 3 displaces the liquid into the cavity 8 of the housing and into the compensation capacitance 7. The system of electrodes 1 and 2 is exposed in the upper part, as a result of which the electrical power of the device is reduced. A decrease in the electric power of the device occurs before the onset of the thermal equilibrium mode, at which the temperature of the heated fluid in the cavity 8 remains relatively constant. The liquid heated in the cavity 8 is supplied and discharged through the pipes 5 and 6, respectively. The violation of the thermal regime is equal to the weight in one direction or another, causing an inversely proportional change in electrical power. Thus, if the temperature of the liquid in the cavity 8 of the electrode heater 14 of the liquid for any reason decreases (or increases), the amount of condensed vapor in the annular chamber 3 accordingly increases (or decreases). The level of the liquid in the annular chamber 3 and, consequently, the electrical power increases (or decreases, which increases (or decreases) the temperature of the fluid in the cavity 8, bringing it to controlled thermal equilibrium. The use of electrically insulating granules 9 in the annular chamber 3, while first, to reduce the volume of the steam pads in the annular chamber 3, which, with the same intensity of steam release, will cause a higher rate than previously known devices; the rate of exposure of electrodes J and 2 and changes in electrical power, secondly, will increase the resistance of the fluid in the annular channel 3 that allows the device to heat a liquid with a lower resistivity, for example, ordinary water with a high content of dissolved conductivity salts. Claims of the invention Electrode fluid heater containing electrodes coaxially mounted to form an annular chamber, axially enclosed with a housing sealed from above, provided with inlet and outlet nozzles and communicated with a compensation capacity, characterized in that, in order to increase reliability by increasing sensitivity, and reduce the electrical resistivity of the heated fluid, the annular chamber between the electrodes is connected to the lower part of the housing cavity and filled by heat-resistant, non-deforming, electrically insulating material that is chemically inert to the liquid being heated. Sources of information taken into account during the examination 1. USSR author's certificate No. 502182, cl. F H 1/20, 1973. 2. Authors certificate of the USSR N687320, cl. F 2 H-1/20, 1977.