RU69209U1 - WATER BOILER - Google Patents

Abstract

A hot water boiler belongs to the power system and can be used in low-power hot water boilers. The proposed hot water boiler allows you to increase productivity and efficiency. The hot water boiler contains a combustion chamber 1 formed by a front 2, rear 3, lower 4, ceiling 5, side 6 and 7 tubular screens connected in series. A grate is installed on the lower 4 tubular screen 8. Behind the rear tubular screen 3 there is a partition 9 with an upper window for flue gases, behind which there is a convection chamber 10 with convective tubular screens 11. The convection chamber 10 is partitioned by a flue gas section 12 for flue gases to convection blocks 13 and 14, in which the transverse rows of convective tubular screens are located 11. In the upper part above the convective tubular screens 5 there are ceiling tubular screens 15 and 16. Convective tubular screens 11 are made in the form of straight horizontal pipes connected along the edges by vertical collectors 17.

Description

The utility model relates to a power system, namely to heat supply, and can be used in low-power hot water boilers.

Water-heating boilers are known that contain a combustion chamber with furnace tube screens and a grate, a convection chamber with convective tube screens (see ed. Certificate of the USSR No. 943493, according to MKI F24H 1/24, declared May 23, 1980 .. and certificate for useful RF model No. 25784, according to MKI F24H 1/00, publ. 10/20/2002).

The closest in technical essence is a water boiler containing a combustion chamber with furnace tube screens and a grate, a convection chamber with convective tube screens. Two sections of straight horizontal pipes are installed in the convection chamber, connected along the edges by vertical collectors with an additional partition (see St. Utility Model of the Russian Federation No. 25784, according to MKI F24H 1/00, published on October 20, 2002).

Common disadvantages of known hot water boilers is the high temperature of the exhaust flue gases due to the insignificant path of the gas along the heat exchange surface of the convection chamber, which reduces the efficiency of the boiler.

The objective of this utility model is to create a water boiler that is simple in design and has a significant heat transfer surface, which would increase its productivity and efficiency.

The problem is achieved in that in a boiler containing a combustion chamber with furnace tube screens and a grate, a convection chamber with convective tube screens, according to a utility model, the convection chamber is divided by a flue gas section for flue gases into convective blocks in which

transverse rows of convective tubular screens are located. The convection chamber is equipped with ceiling tubular screens for each convection unit. The gas outlet section is made in the form of a convective tubular screen, the gaps between the horizontal pipes of which are closed by rigidly fixed plates. The convection chamber is equipped with ceiling tubular screens installed in each convection unit, the number of which can increase or decrease depending on the heated area.

Figure 1 shows the proposed hot water boiler, General view; figure 2 is the same, a top view; figure 3 shows the hydraulic circuit of the boiler.

The hot water boiler contains a combustion chamber 1 formed by a front 2, rear 3, lower 4, ceiling 5, side 6 and 7 tubular screens connected in series. A grate 8. is installed on the lower 4 tubular screen 8. Behind the rear tubular screen 3 there is a partition 9 with an upper window for flue gases, behind which there is a convection chamber 10 with convective tubular screens 11.

The convection chamber 10 is partitioned by a flue gas section 12 for flue gases to convective blocks 13 and 14, in which the transverse rows of convective tube screens 11 are located. Ceiling tube screens 15 and 16 are located in the upper part above the convective tube screens 5. Convective tube screens 11 are made in the form straight horizontal pipes connected along the edges by vertical collectors 17.

The return pipe of the heating network is connected to the lower tubular screen 4, connected in series with convective tubular screens 11, connected to the ceiling pipe screens 15 and 16. The ceiling pipe screen 16 is connected to the input of the front pipe screen 2, and the output of the side tubular screen 7 is connected to the direct pipe of the heating network .

The hot water boiler operates as follows.

When burning solid fuel, for example, coal located on the grate 8 of the combustion chamber 1, front 2, rear 3, lower 4, ceiling 5, side tubular screens 6, 7 are heated. The flue gases from the combustion chamber 1 through the upper flue gas window, made in the partition 9, enter the convection chamber 10, divided by the flue gas section 12 into two convective blocks 13 and 14. The flue gases wash the convective tube screens 11 of the convective block 13, heat is transferred to the lower part of the cavity of the convection chamber in communication with the second convection unit 14 and exited from the boiler. From the return network of the heating system supplied by the pump (not shown in the drawing), the coolant enters the input of the lower 4 tubular screen, removes heat from the grate 8 and is supplied to the convection unit 14, and then to the convection unit 13. Next, the coolant enters the ceiling tube screen 5 From the ceiling tubular screen 5, the coolant enters the front tubular screen 2 and passing successively side b, rear 3 and side 7 tubular screens enters the direct pipeline of the heating network. Next cycle repeats

The proposed water boiler allows you to increase productivity and efficiency, by increasing the heat transfer surface and reducing the unevenness of the heat load on the screens.

Claims (3)

1. A water boiler comprising a combustion chamber with furnace tube screens and a grate, a convection chamber with convective tube screens, characterized in that the convection chamber is divided by a flue gas section for convection gases into convective blocks in which the transverse rows of convective tube screens are located. 2. The boiler according to claim 1, characterized in that the convection chamber is equipped with ceiling tubular screens for each convective unit. 3. The boiler according to claim 1, characterized in that the gas outlet section is made in the form of a convective tubular screen, the gaps between the horizontal pipes of which are closed by rigidly fixed plates.