RU2447369C1 - Outdoor condensation boiler - Google Patents

Abstract

FIELD: power industry.

SUBSTANCE: outdoor condensation boiler contains blower furnace, main heat-exchanger, direct and reverse lines, circulation pump. Boiler is equipped additionally with two flue ducts with heat-exchangers installed inside them, at that flue ducts are located below chimney outlet of main heat-exchanger and two heat-exchangers are installed inside flue ducts in order to warm up heat carrier by flue gases with subsequent delivery of hear carrier to heat-exchangers. At that each flue duct is equipped with condensate drainage tube located at the base.

EFFECT: reduction of heat production costs and improvement of efficiency factor due to use of auxiliary flue ducts.

2 dwg

Description

FIELD OF THE INVENTION

The invention relates to the field of production of hot water boilers, in particular to outdoor condensation boilers using the latent heat of vaporization of water vapor in flue gases due to additional energy recovery during condensation of water vapor.

State of the art

Known water-heating universal boiler installation, consisting of a water heating boiler containing a gas burner device, a gas duct, nozzles for heating and return water, an upper drum, in which a hot water supply system is mounted, made in the form of a multi-pass high-speed water-water heater containing bundles of brass tubes separated at the ends cameras and arranged sequentially from the bottom up (see Pat. RU No. 2133925, IPC F24H 1/22).

The disadvantage of this boiler plant is the high cost of generating heat.

A well-known outdoor boiler containing a gas burner, a boiler heat exchanger, a three-way valve with direct and reverse lines, a chimney, while at the base of the chimney a hatch for cleaning soot and a condensate pipe is installed, and the building heating system contains a vertical riser connected to a straight a boiler line, a deaeration expansion tank, distributing risers with heating devices, a return line to the heating system, a circulation pump, a mud filter (see Condensing boiler l, RSU - M1 operating manual for Ca 2.574.023.РЭ OJSC Starorusspribor Plant, 175200, Staraya Russa, Novgorod Region, Mineralnaya St. 24).

The disadvantages of this boiler are its high cost and the cost of heat production, low efficiency.

The closest in technical essence and the achieved positive effect and adopted by the author for the prototype is an outdoor condensation boiler, containing a thermally insulated casing with a thermally insulated vertical gas tube boiler with a gas burner, with a direct boiler pipe connected by an automatic thermostatic valve with a straight line to the building heating system , gas pipes with turbulators placed in them, a chimney, while in the smoke collector of the boiler an additional an additional heat exchanger in the form of a corrugated stainless steel pipe connected by one pipe to the return line of the heating system of the building, and the second pipe to the return pipe of the gas pipe boiler, the gas pipes containing turbulators with protective washers from condensate drops that are removed from the edges of the gas pipes by the brackets of the turbulators, diameter which is equal to the gap between the protective washer and the edge of the gas pipe, and the base of the smoke collector contains a condensate drain pipe (see US Pat. RU No. 2333429, IPC F24H 1/00, publ. 09/10/2008).

The disadvantage of this boiler is the inability to place a condensing heat exchanger below the chimney of the main heat exchanger due to the high resistance of the duct.

Disclosure of invention

The objective of the invention is to develop a condensation boiler for outdoor use, having a reduction in heat production costs, an increase in efficiency (Efficiency), due to the creation of two additional flue gas strokes and heat transfer to the heat carrier through stainless steel heat exchangers, the boiler itself is made of traditional materials, which significantly reduces the cost of the boiler.

The technical result, which can be obtained using the present invention, is to reduce the cost of heat and increase efficiency.

The technical result is achieved using an external condensation boiler containing a thermally insulated body, the main boiler heat exchanger, a blow torch, a direct and return line, a chimney pipe, while it is additionally equipped with two chimneys with two heat exchangers, the chimneys located below the chimney pipe of the main heat exchanger, and two heat exchangers are installed inside the chimneys with the possibility of heating the heat carrier with flue gases in them with a successive flow of heat in Eqn heat exchangers, each provided with a chimney kondensatootvodyaschey tube situated at the bottom.

Thus, the technical result is achieved due to the fact that two additional chimneys of the second and third stroke are installed with stainless steel heat exchangers located inside the chimneys, the latter are located below the nozzle of the main heat exchanger of the boiler, which is made of traditional materials, resulting in increased resistance of two additional the chimney of the boiler is overcome by a blast burner, which ensures high-quality combustion of gaseous fuels, which leads to a reduction in the cost of heat and higher efficiency.

Brief Description of the Drawings

Figure 1 is given a condensation boiler for outdoor use, General view.

Figure 2 is the same, top view.

The implementation of the invention

The outdoor condensation boiler 1 contains a blow torch 2, a main heat exchanger 3 of the boiler 1, a direct and return line 4 and 5, respectively, a circulation pump 6, while the boiler 1 is additionally equipped with a second duct chimney 7 with a stainless steel heat exchanger 8 installed inside, chimney 9 of the third stroke with a heat exchanger 10 installed inside, made of stainless steel, which are installed with the possibility of heating the heat carrier with flue gases in series with the heat transfer ator in heat exchangers 8 and 10, respectively, and a chimney pipe 11, with the flue 7 and 9 of second and third turn at the base comprise kondensatootvodyaschuyu tube 12, and the main heat exchanger 3 and the second and third flues stroke 7 and 9 are insulated insulation 13.

Condensing boiler outdoor placement works as follows.

The blast burner 2 generates heat and directs it to the main heat exchanger 3, having cooled, the flue gases enter the chimney 7 of the second stroke, wash the heat exchanger 8, transfer part of the heat to the heat carrier in this heat exchanger 8, then they enter the chimney 9 of the third stroke, wash the heat exchanger 10, giving part of the heat to the coolant in this heat exchanger 10 and through the nozzle of the chimney 11 are removed to the atmosphere (not shown in Fig.), while condensation forms on the stainless surfaces of the heat exchangers 8 and 10, which flows to the base of the chimneys 7 and 9 of the second and third strokes and through the condensate drain pipe 12 is removed from the boiler 1, and thermal insulation 13 reduces heat loss through the main heat exchanger 3 and heat exchangers 8 and 10 of the chimneys 7 and 9 of the second and third strokes, and the coolant flows through the return line 5 of the boiler 1 into the heat exchanger 8, in which it warms up, enters the heat exchanger 10, then to the circulation pump 6, then to the main heat exchanger 3, having heated in the latter to a predetermined temperature, the heat carrier in a straight line 4 is sent to the building heating system (in FIG. not shown), having cooled in which, it returns via the return line 5 to the condensation boiler 1.

The invention in comparison with the prototype and other known technical solutions has the following advantages:

- cheaper heat production;

- increase in boiler efficiency by 10-15% due to the use of latent heat of vaporization of water vapor in flue gases and additional energy capture during condensation of water vapor;

- high-quality fuel combustion.

Claims (1)

An outdoor condensation boiler comprising a thermally insulated body, a main boiler heat exchanger, a blow torch, a direct and return line, a chimney pipe, characterized in that it is additionally equipped with two chimneys with two heat exchangers, the chimneys located below the chimney pipe of the main heat exchanger, and two heat exchangers installed inside the chimneys with the possibility of heating the coolant with flue gases in them with a sequential flow of coolant into the heat exchangers, while Each chimney is equipped with a condensate drain pipe located at the base.

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