SU1126770A1 - Liquid heating device - Google Patents

Abstract

1. A DEVICE FOR HEATING A LIQUID, preferably water, containing a heat source and a heating surface, characterized in that, in order to improve economy, the device further comprises a thermoelectric generator and refrigerator, electrically connected to each other consistently and having hot and cold junctions , while the hot junctions of the thermal generator have thermal contact with the heating surface, and the cold junctions of the thermogenerator and the hot junctions of the thermal cooler are equipped with a common main pipeline, connected to the heating surface to form a circulation loop for the liquid to be heated. 2. The device according to claim 1, of which is, in order to ensure autonomous operation of the thermal cooler, the latter is provided with an individual current source, and the thermogenerator has a control voltage W with: Contacts, one of which is connected to the specified current source thermal cooler, and the other - to the thermogenerator.

Description

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o The invention relates to heat exchange installations operating on the Peltier effect, and can be used in heat and power engineering, mainly for heating water. A steam generator containing a FOCU, a gas duct- and screen tubes 13 is known. The lack of a steam generator is low efficiency, since the heat of the exhaust gases is not fully utilized. A water heater containing a heat source (burners) and a heating surface located above the burners in a gas duct is known. However, this water heater only optimizes combustion processes and does not provide for full heat-dissipation of gases, as there are radiation losses to the environment. A fluid heater is known that contains a hollow rotor with upper and side walls, the latter of which connects to the SZ-Z thermoelectric battery. Despite the fact that this heater is more economical in comparison with the mentioned ones, since it partially utilizes heat due to the presence of a thermoelectric battery, a disadvantage; This means that a thermoelectric battery must be connected to a current source. A device for heating a liquid, preferably water, is known, which contains a heat source and a heating surface. This device for heating a liquid is a vertical hot-water boiler having cast tubular walls located above the stove 43. A disadvantage of the known device lies in its inefficiency due to the lack of heat recovery of exhaust flue gases. The purpose of the invention is to increase the efficiency of operation of devices for heating water. The goal is achieved by the fact that a device for heating a liquid, mainly water, containing heat sources and a heating surface, additionally contains a thermoelectric generator and a refrigerator electrically connected to one another 02 in series and having hot and cold junctions have thermal contact with the heating surface, and the cold junctions of the thermogenerator and the hot junctions of the thermal cooler are provided with a common main pipeline connected to the heating surface, with the formation of rkul insulating circuit for the heated liquid. The device can be equipped with an individual current source, and the thermogenerator - a voltage control relay with contacts, one of which is connected to the indicated thermal current source of current, and the other to the thermal generator. ija fig. 1 shows the proposed device for heating a liquid; in fig. 2 is an electrical circuit for sequential connection of a thermal cooler and a thermogenerator to a current source. . . The device contains a source of heat 1, a heating surface 2 made of pipes forming the wall of the boiler, a thermoelectric generator 3, a thermoelectric cooler 4, having 5 and 6 cold passes, respectively, and 7 and 8 hot joints, a common main pipeline 9, an individual source 10 current, iipH- connected to thermoelectric cooler 4, contacts 11 and 12, voltage control relay 13, valve 14, chamber 15, flue 16, heat exchanger 17, reflectors 18, electric wire 19. The device operates as follows. During the combustion of fuel in the furnace 1, the gases move through the duct 16, turbulize the reflectors 18 and heat, the surface 2 made of pipes, water circulating inside the pipes 3, and the heat exchanger 17 circulates cold water which cools the hot junctions of 8. thermoelectric cooler 4,. As a result, a thermoelectromotive force arises in the thermoelectric generator 3 and an electric current is supplied to the refrigerator (the direction in the generator 3 is shown in Fig. 1 by a dotted line) -. As a result, the chamber 15 is cooled and the water is heated in the heat exchanger 17, which is then passed through the main pipeline,

The arc 9 enters the cold spa m 5 of the thermogenerator 3, from where it enters the pipes of the surface 2, while gradually heating the water.

The operation of the proposed device using the electrical circuit (Fig. 2) is carried out as follows.

In the case when the heating surface is exposed to a nominal load, the thermoelectric generator 3 provides the nominal voltage drop in the thermoelectric cooler. 41 At the same time, contact I of relay 13 is closed, contacts 12 are open and current source 10 is disconnected.

In case of violation of the mode of operation of the device for heating the liquid, i.e either by reducing the heat load on the surface 2 or its

repair, the thermoelectric generator 3 does not provide the required voltage drop on the thermoelectric cooler - 4. If the voltage drops below the allowable one, - the break relay 13 - contacts 11 closes contacts 12 to the current source 10, connecting the thermoelectric refrigerator 4 to the network.

When restoring the operation mode of the device for heating a liquid (water), the voltage drop on the thermoelectric generator 3 is restored and on the signal. Relay 13 Thermoelectric cooler 4 is connected to thermoelectric generator 3.

The invention is simply constructive, does not require significant capital investments and is economical in work. .

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Claims (2)

I. DEVICE FOR HEATING A LIQUID, mainly water, containing a heat source and a heating surface, characterized in that, in order to increase efficiency, the device further comprises a thermoelectric generator and a refrigerator electrically connected one to the other in series and having hot and cold junctions, In this case, the hot junctions of the thermogenerator have thermal contact with the heating surface, and the cold junctions of the thermogenerator and the hot junctions of the thermo-refrigerator are equipped with a common main pipeline, connected th to the heating surface to form a circulation loop for the fluid to be heated. 2. The device according to π.1, characterized in that, in order to ensure autonomous operation of the thermal refrigerator, the latter is equipped with an individual current source, $ and the thermal generator has a voltage control relay with contacts, one of which is connected to the specified current source of the thermal refrigerator, and the other to the heat generator. SU w. 1126770> 1 . 1126770 2