RU2578501C1 - External boiler - Google Patents

Abstract

FIELD: heating.

SUBSTANCE: invention relates to production of hot water boilers, particularly, to recovery of external accommodation, and can be used in independent heating systems with forced and natural circulation of heat carrier. External boiler consists of one thermal-hydro-insulated body, inside of which there are arranged one above the other two-upper and lower tube heat exchangers, each being provided with reverse and straight lines of three-way design, each heat-tube heat exchanger is equipped with its blow burner, lower heat-tube heat exchanger comprises one branch pipe of flue gases, and upper heat-tube heat exchanger includes two branch pipes of flue gases of different diameter installed with possibility of combining with the help of gas duct in one pipe, lower heat-tube heat exchanger includes carbon dust collector and on branch pipe of flue gases of the upper heat exchanger there is mounted smoke stack, herewith said pipes has larger cross-section equal to the cross-section of chimney.

EFFECT: technical result provides increase of boiler performance and reduction of costs for heat production.

1 cl, 1 dwg

Description

FIELD OF THE INVENTION

The invention relates to the production of hot water boilers, in particular, to boilers of external and internal placement, and can be used in autonomous heating systems with forced and natural circulation of the coolant.

State of the art

Known condensation boiler for outdoor use, containing a gas burner device, 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 are installed, and a straight line is connected to a vertical riser of the building heating system, which contains distributing risers with heating devices, a return line to the heating system and a circulation pump, while the boiler in the lower inner part of the chimney is equipped with a heat exchanger to the condensate part, a fairing installed inside the heat exchanger of the condensate part, configured to evenly distribute the flue gas stream, while the upper part of the condensate part heat exchanger is connected to the return line of the heating system containing the deaeration expansion tank and the mud filter, and the lower part of the heat exchanger is connected to the return the boiler line (see Pat. RU No. 2395042, IPC F24H 1/00, published on July 20, 2010).

The disadvantage of this boiler is the high cost of heat production, low efficiency.

Known condensation boiler for outdoor use, containing a thermally insulated body, inside which there is a gas burner device, a fire tube heat exchanger with direct and reverse lines, a coaxial chimney connected to a chimney, while it is additionally equipped with a condensation heat exchanger and a centrifugal fan, while a coaxial chimney with a condensation heat exchanger installed behind the fire tube heat exchanger at the base of the chimney, and in the upper part of the hydrothermal insulation housing, behind the fire tube heat exchanger a centrifugal fan is installed with the ability to overcome the resistance to the movement of flue gases in a coaxial chimney (see US Pat. RU No. 2449225, IPC F24H 1/00, publ. 04/27/2012).

The disadvantage of this boiler is the low power of the boiler and the high cost of heat production.

The closest in technical essence and the achieved positive effect and adopted by the author for the prototype is an outdoor boiler containing a thermally insulated body with a heat exchanger inside the boiler with a furnace, with direct and reverse lines, the base of the chimney, a blast burner, a grill for external air, This metal surface of the furnace of the boiler heat exchanger is additionally equipped with a protective plate installed in the furnace opposite the blast burner.

In the boiler, the protective plate is made of refractory ceramic fiber (see US Pat. RU No. 142278, IPC F24H 1/00, publ. 06/27/2014).

The disadvantages of this boiler are its low power and high costs of heat production.

Disclosure of invention

The objective of the invention is the development of an outdoor boiler having an increase in boiler power and a reduction in heat production costs.

The technical result that can be obtained using the present invention is to increase the boiler power and reduce the cost of heat production.

The technical result is achieved using an outdoor boiler comprising a thermally insulated body, a fire tube heat exchanger, a direct and return line, a blow torch, a chimney with a nozzle, an air intake grill, while it is additionally equipped with a second fire tube heat exchanger, and the fire tube heat exchangers are made three-way, each equipped with its own blast burner, and are installed one above the other in a single thermally insulated housing, while in the lower fire tube heat exchanger is made one n flue gas pipe, and in the upper - two flue gas pipes of different diameters, with the possibility of combining with a flue into one pipe.

Thus, the technical result is achieved due to the fact that in one thermally insulated casing two fire-tube heat exchangers are placed one above the other, made by three-way ones, combined by gas ducts into one pipe, while each fire-tube heat exchanger has its own blast burner, direct and return lines.

Brief Description of the Drawings

The figure shows the boiler outdoor placement, General view, section.

Utility Model Implementation

The outdoor boiler consists of one thermally insulated housing 1, inside of which two are installed one above the other - lower and upper, fire tube heat exchangers 2 and 3, respectively, each of which is equipped with return and straight lines 4 and 5, respectively, and which are made three-way, each fire tube the heat exchanger 2 and 3 is equipped with its own blast burner 6 and 7 (see. "Heat engineering and heating equipment" under the editorship of Academician RAPE and MAN Belikov S.E., published by LLC Kvartika-M, M., 2003), turbulators 8, respectively about, an intake grille 9, while the lower fire tube heat exchanger 2 contains one flue gas pipe 10, and the upper fire tube heat exchanger 3 contains two flue gas pipes 11 and 12, respectively, of different diameters, with the possibility of combining by means of a flue (not shown in Fig. ) in one pipe, while the nozzles 10, 11 and 12 are connected to the smoke collector 13, the lower fire tube heat exchanger 2 contains a carbon black 14, and a chimney 15 is mounted on the flue gas pipe 12, while the pipes 10 and 11 have an equal cross section, and the pipe 12 - stole a limited cross-section equal to the cross section of the chimney 15, the heat-insulated housing 1 and the fire tube heat exchangers 2 and 3 are insulated with heat insulation (in FIG. not indicated), and the thermally insulated housing 1 is covered with waterproofing (not indicated in FIG.).

The outdoor boiler operates as follows.

The blast burners 6 and 7 installed in the fire tube heat exchangers 2 and 3, made three-way, generate heat, flue gases wash the heating surfaces of the fire tube heat exchangers 2 and 3, wash the turbulators 8 and into the smoke collector 13 in the third stroke and using smoke pipes 10, 11 gases of equal cross section and a flue gas pipe 12 having an enlarged cross section equal to the cross section of the chimney 15 are removed into the chimney 15 and further into the atmosphere, while the combustion air enters the fire tube heat exchangers 2 and 3, made of three odes through the intake grilles 9, the coolant enters the fire tube heat exchangers 2 and 3 through the return lines 4 and, heated, is fed into the heating system (not shown in Fig.) along the straight lines 5, while the soot formed during the combustion of the fuel enters Soot collector 4, from where it is periodically removed.

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

- increase in boiler power;

- increase the life of the boiler;

- reduction of heat production costs;

- increase in boiler efficiency by 10-15%.

Claims (1)

An outdoor boiler comprising a thermally insulated casing, a fire tube heat exchanger, a direct and return line, a blast burner, a chimney with a nozzle, an air intake grill, characterized in that it is additionally equipped with a second fire tube heat exchanger, while the fire tube heat exchangers are made three-way, each equipped with its own blow burner, and are installed one above the other in a single thermally insulated casing, while in the lower fire tube heat exchanger one flue gas pipe is made and in the upper - two flue gas pipes of different diameters, with the possibility of combining with the help of a flue into one pipe.