RU168146U1 - WATER BOILER WITH MULTI-WAY HEAT EXCHANGER - Google Patents

Abstract

The inventive utility model relates to a power system, and more specifically to a device for burning solid fuel, with multi-pass heat exchangers. The purpose of the claimed utility model is to achieve such a technical result as increasing the efficiency of heat transfer. The goal is achieved as follows: hot-water boiler with a multi-pass heat exchanger, solid fuel consisting of a metal casing containing a combustion chamber with a door and a shutter, a liquid circuit with inlet and outlet pipes, s flax with an air supply flap, grates, a multi-pass heat exchanger and a chimney, while the heat exchanger is made three-way and at least one of its moves is inclined relative to the horizontal plane. The inventive heating boiler with a liquid coolant is a reliable and simple device that allows to find wide application in everyday life, does not require special knowledge or skills.

Description

The inventive utility model relates to a power system, and more specifically to a device for burning solid fuel, with multi-pass heat exchangers.

Heating water heating boilers have been known for a long time and are widespread in everyday life, due to the availability of fuel, their safety and the lack of the need to connect to any energy systems (when using systems on coal, wood, etc.). At the same time, however, there is a wide variety of boiler designs and their parts, in particular related to the design of heat exchangers.

For example, a solid fuel boiler is known (RF Patent 121042, published 10.10.2012), comprising a housing, a furnace chamber, a heat exchanger, and a grate. The boiler body is a structure formed of steel sheets and pipes, it is covered with shields with heat-insulating material from the outside, the furnace chamber is a tube frame alternating with fireclay bricks, the horizontal tubes of the heat exchanger form two tube bundles between which a dividing shield is welded, and the tubes are welded under tilt in the direction of movement of the exhaust gases, extractable turbulators are installed in the pipes of the heat exchanger, the door of the heat exchanger is hollow, in the return water pipe mole, and return water is fed into the hottest zone of the furnace.

A disadvantage of the known design is the low heat transfer efficiency.

высоты дымохода и длиной, равной ширине теплообменника, каждый из которых прикреплен к боковым стенкам внутреннего корпуса котла с наклоном 3-5° в сторону боковой стенки котла, при этом конвективный узел соединен по воде с водяной рубашкой котла и образует зигзагообразный дымоход.The closest analogue to the claimed design is a hot-water boiler (RF Patent 67233, published 10.10.2007), characterized in that the convective assembly is a series of hollow box-shaped heat exchangers located one above the other and alternately offset to the rear and front walls of the gas duct space, which are welded on the inside with respect to the flue gas flow

the height of the chimney and a length equal to the width of the heat exchanger, each of which is attached to the side walls of the inner casing of the boiler with a slope of 3-5 ° towards the side wall of the boiler, while the convection unit is connected by water to the boiler’s water jacket and forms a zigzag chimney.

The disadvantages of the known solutions can also include low heat transfer efficiency.

The purpose of the claimed utility model is to eliminate the claimed drawback to achieve such a technical result as increasing the efficiency of heat transfer.

The goal is achieved as follows: a hot-water boiler with a multi-pass heat exchanger, solid fuel, consisting of a metal casing containing a combustion chamber with a door and a shutter, a liquid circuit with an inlet and outlet pipes, an ash pan with an air supply shutter, grates, a multi-pass heat exchanger and a chimney, while the heat exchanger is made three-way and at least one of its stroke is inclined relative to the horizontal plane.

A hot water boiler with a multi-pass heat exchanger in particular can be characterized in that the angle of the heat exchanger is 15-25 degrees.

A hot water boiler with a multi-pass heat exchanger in particular can be characterized in that the stroke height of the heat exchanger is less than its length by at least three times.

In FIG. shows a cross-sectional hot-water boiler with a multi-pass heat exchanger, where the numbers indicate the following:

1. metal case

2. combustion chamber

3. combustion chamber door

4. combustion chamber damper

5. fluid circuit

6. inlet pipe

7. outlet pipe

8. ashpit

9. ash pan air supply flap

10. grate

11. multi-pass liquid heat exchanger

12. chimney

The boiler shown in the figures with a multi-pass heat exchanger is arranged as follows.

Inside the metal housing 1, there are a combustion chamber 2, a damper of the combustion chamber 4, a liquid circuit 5, an ash pan 8, grates 10 and a multi-pass liquid heat exchanger 11. Outside the metal housing 1, there is a door of the combustion chamber 3, inlet 6 and outlet 7 of the nozzle, a supply flap ashpit air 9 and chimney 12.

The boiler shown in the figures with a multi-pass heat exchanger operates as follows.

Loading of combustible fuel takes place through door 3. When burning fuel, there is a transfer of thermal energy released during combustion, the coolant is water. As a result of combustion, the metal casing 1, the combustion chamber 2, the surface of the multi-pass liquid heat exchanger 11 are heated and transfer heat to the water circulating in the liquid circuit 5, which exits through the outlet pipe 7 in the upper part of the boiler. Water enters the boiler through the inlet pipe 6 at the bottom of the rear wall. The combustion of fuel takes place in the combustion chamber 2. Air enters the combustion zone through the grate of the grate 10. The amount of air is regulated by the air supply dampers of the ashpit 9 and the combustion chamber 4. The remains of the burned fuel, in the form of ash, enters the ashpit 8. Combustion products in the form smoke is discharged through the chimney 12.

In this case, the heat exchanger is made inclined, with an angle of inclination, for example, 15-25 degrees, which allows to improve the intensity of circulation of the coolant. In addition, also in order to increase the intensity of circulation of the coolant, the stroke height of the heat exchanger may be less than its length, for example, not less than three times.

Thus, the use of a heat exchanger located with a slope relative to the vertical and horizontal walls of the boiler, allows to achieve the claimed technical result, namely increasing the efficiency of heat transfer.

Industrial applicability.

The inventive heating boiler with a liquid coolant is a reliable and simple device that allows you to find wide application in everyday life, does not require special knowledge or skills.

Claims (3)

1. A hot water boiler with a multi-pass heat exchanger, solid fuel, consisting of a metal housing containing a combustion chamber with a door and a damper, a liquid circuit with inlet and outlet pipes, an ash pan with an air supply damper, grate, a multi-pass heat exchanger and a chimney, characterized in that the heat exchanger is made three-way and at least one of its moves is inclined relative to the horizontal plane. 2. A hot water boiler with a multi-pass heat exchanger according to claim 1, characterized in that the angle of the heat exchanger is 15-25 degrees. 3. A hot water boiler with a multi-pass heat exchanger according to claim 1, characterized in that the stroke height of the heat exchanger is less than its length by at least three times.

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