RU15002U1 - HEATING SYSTEM WITH NATURAL HEATING CIRCULATION - Google Patents

Description

HEATING SYSTEM WITH NATURAL HEATING CIRCULATION

The utility model relates to water heating systems with natural circulation of coolant in autonomous heating and hot water systems and can be used to heat the internal volumes of buildings.

A known heating system with natural coolant circulation and hot water supply, comprising a hot water boiler with a coil for heating flowing cold water, an expansion vessel with a float valve to automatically maintain the water level in it and a control overflow pipe, a main riser connecting the upper point of the boiler’s water jacket to the bottom of the expansion pipe vessels, heating devices connected by a supply pipe to the lower part of the side walls of the expansion vessel, and a return pipe odo - with the lower point of the boiler’s water jacket with a tap between the boiler and the last heating device, mixers with cold and hot taps, whose water is connected to the corresponding pipelines, the last of which is connected to the supply pipe of the heating system, while the float valve of the expansion vessel is connected by a pipe an additional third tap is installed through a faucet with a branch pipe of a coil for heating cold running water coming out of the boiler, and next to the hot water faucet of each mixer of places of water consumption with a marking similar to a hot water tap, the inlet of which is connected to the pipeline section between the float valve tap and the outlet pipe of the heating water heating coil exiting the boiler, and the outlet of this tap is connected to the return pipe of the heating system in the section between the boiler and the return pipe tap, cold tap water pipeline,

ШШ7 Р 24 Д 3/00

- d before the first tap for its consumption, two shut-off valves are installed, between which a filter with a quick-change filter element is installed (see Pat. RF Jfe 2123155, CL 24 D 3/00).

The disadvantage of this heating system is the design complexity.

A well-known fire-tube boiler containing a firebox with a burner located in the lower part of the boiler, a vertical bundle of flame tubes installed inside the outer pipe, a direct and return water pipe, an expansion tank (see MMZ -1.8 / type household hot-water fire-tube boilers 8, MMZ-0.7 / 8, AGV-12o, Moscow Machine-Building Plant, 1995).

The disadvantage of this boiler is the high cost of heat production, the use of electric pumps serving the boiler and heating system.

The closest in technical essence and the achieved positive effect and accepted by the authors for the prototype is the heating system, consisting of a hot water boiler with supply and return lines of the heating system, a circulation boiler pump with a butterfly valve, a safety valve, a thermal mat (it is a prospectus of OZ & P NUT, Sweden , 1998).

The disadvantage of this heating system is the complexity of the design, the high cost of heat.

The purpose of the proposed utility model is to ensure the thermal regime of the boiler during startups and connections to the heating system, simplifying the design, reducing the cost of heat energy.

This goal is achieved by the fact that the heating system with natural circulation of the coolant containing the boiler, the supply and return lines of the heating system is additionally equipped with an automatic thermostatic three-way valve, consisting

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from a cylindrical body with three nozzles, and a thermostat is installed inside the housing with a sleeve, a removable cover and gaskets, two nozzles installed in the cylindrical parts of the housing at different heights, and a third bypass in the bottom of the housing and connected to the return line of the heating system, while the pipe installed in the lower part of the housing is connected to the pipe installed in the upper part and to the supply and return lines of the heating system by means of a thermostat.

In FIG. I gives a general view of the heating system with natural circulation of the coolant.

In FIG. 2, a thermostatic three-way valve is cut automatically.

The heating system with natural coolant circulation includes a boiler I connected to the supply 2 and return 3 lines of the heating system, an automatic thermostatic three-way valve 4, consisting of a cylindrical body 5 with three pipes 6,7,8, and a thermostat 9 is installed inside the body 5 with bushings Yu, circuit cover II and gaskets 12, with nozzles b and 8 installed in the cylindrical parts of the housing 5 at different heights, and the nozzle 7 - bypass - in the bottom of the housing 5 and is connected to the return line 3 of the heating system, while a pipe 6 installed in the lower part of the cylindrical body 5 is connected to a pipe 8 installed in the upper part with and with the supply 2 and return 3 lines of the heating system by means of a thermostat 9.

A heating system with natural circulation of the coolant operates as follows.

idle state, cold water supply through pipe 8 to the heating system is closed, all water is supplied through the bypass pipe cutting 7 to the return 3 line bypassing the heating system. As soon as boiler I warms up when SQ® C is reached (setting temperature at the start of thermostat 9 operation), part of the heated water begins to flow into the heating system through supply line 2 through a pipe 9 installed in the upper part of the cylindrical body 5, and part continues to flow back to the b line through pipe 7, maintaining the required water temperature at the inlet to boiler I. When the heating system is fully warmed up, thermostat 9 completely shuts off pipes 6.7 and hot water enters the heating system.

The proposed utility model in comparison with the prototype and other known technical solutions has the following advantages:

-provision of the thermal regime of the boiler during starts and connections to the heating system; -simplification of the design; -cheapering the cost of heat; -increasing the safety of fuel combustion; -increasing the efficiency of the boiler by $ 15-20; -saving fuel.

Authors: (.A. Serdyukov

A.M. Serdyukov

Claims (1)

A heating system with natural coolant circulation, comprising a boiler, supply and return lines of the heating system, characterized in that it is additionally equipped with an automatic thermostatic three-way valve, consisting of a cylindrical body with three pipes, and a thermostat is installed inside the body with a sleeve, a removable cover and gaskets moreover, two nozzles are installed in the cylindrical parts of the housing at different heights, and the third - bypass - in the bottom of the housing and connected to the return line of the heating system at the same time, the nozzle installed in the lower part of the housing is connected to the nozzle installed in the upper part and to the supply and return lines of the heating system by means of a thermostat.