EA013784B1 - Heating hot water boiler - Google Patents

Abstract

The invention relates to furnace heat engineering gas or liquid fuel fired and can be utilized for heating and hot-water supply of apartment buildings and production premises. A heating boiler comprises a housing (1) with a removable upper portion (2) on which an exhaust pipe (3) is mounted and a casing (4) with clearance and cover (5), a water jacket is arranged inside the housing with cold water supplying and hot water discharging branch pipes, said water jacket forms with the upper portion a gas collector, a firing chamber arranged in the bottom central portion with an arch lowering to its rear wall, a burning member arranged in a furnace chamber (10), a vertical gas flow passage embodied as a number of parallel rectangular ducts (14) evenly arranged over the water jacket volume, the arch at the rear wall of the furnace chamber embodied as stepped lowering. The technical result leads to enhancement of performance output operation efficiency of fuel combustion due to intensification of heat transfer directly in the furnace chamber.

Description

The invention relates to furnace technology, working on gas or liquid fuel, and can be used for heating and hot water supply of residential and industrial premises.

Known heating water vertical boiler (RF patent No. 2052733, R24H 1/24, published in 1996), containing placed in the case of the furnace, the central flue and water jackets located concentrically in each other with the formation of gaps for the passage of gases. One gap is connected in series with the gas collector and the chimney. The collector is made of variable cross-section, increasing in the direction of gas movement. The body is bounded below and above the bottoms. The bottoms are hollow and provided with removable covers. The cold water inlet pipeline is connected to the bottom and the hot water outlet pipeline is connected to the upper bottom. Easily removable partitions are installed in the gaps.

The disadvantage of a hot water vertical boiler is the complexity of its design and high intensity of metal consumption, as well as low efficiency of combustible fuel caused by the uneven distribution of heat from its combustion over the heat exchange surface, decreasing from the central gas duct to the body through the radial gas duct.

Known heating boiler LYUKS-1 (Eurasian patent number 827, R24H 1/24, published 2000.04.24), comprising a housing with a removable upper base, on which a chimney is installed and with a casing with a gap. In the case there is a water jacket with coolant inlet and hot water outlet branch pipes and forming a gas collector with the upper base. In the lower central part of the water jacket there is a combustion chamber with a burner, which is connected to a vent through a vertical gas duct and a gas collector. The duct is made in the form of a number of parallel rectangular channels equally spaced along the volume of the water jacket, spaced from each other at a distance equal to or greater than their width.

The disadvantage of the Lux-1 hot water boiler described is its low efficiency, since at the beginning of the combustion process, condensate forms on the walls of the duct due to the high temperature difference between the coolant and the flue gas flow, which worsens the combustion process and contributes to the formation of carbon deposits on the walls of the duct, which reduces heat transfer, and also entails increased fuel consumption.

The closest analogue is a water-heating boiler (RF patent No. 2273802 Р24Н 1/44, 2006.04.10), comprising a housing with a removable upper part and a chimney, a combustion chamber, a water jacket, a burner and branch pipes supplying cold and evacuated hot water placed in bottom of the combustion chamber. Above the burner device is placed a heat exchanger in the form of a bundle of pipes, which are placed obliquely and fixed in the corresponding opposite walls of the combustion chamber with the formation of collectors, inlet and outlet. The inlet collector is placed lower than the outlet and is connected to the water jacket by means of an overflow channel made in the upper part of the water jacket, and the outlet collector is connected to the branch pipe of the hot water outlet. In addition, an additional heat exchanger is installed above the heat exchanger in the form of a tube bundle. The connection of the water jacket with the inlet collector and the outlet collector with the hot water outlet pipe is carried out by installing the tank, respectively, the drain and the outlet. In the upper part of the water jacket is made channel for air bleeding.

The technical problem of the invention is to increase the efficiency and efficiency of the combusted fuel due to the intensification of the heat transfer process directly in the combustion chamber.

The problem is solved due to the fact that in a heating hot-water boiler, comprising a housing with a removable upper part, on which the exhaust pipe is installed and with a gap, a housing with a lid, a water jacket placed in the housing with cold water inlet pipes and outlet pipes gas collector is connected to the upper part of the body, and in the lower central part - the combustion chamber with a vault going down to its rear wall, a burner located in the combustion chamber, a vertical gas flue in the form of p of parallel rectangular channels evenly spaced in terms of water jacket, set the combustion chamber is formed stepwise lowered.

Execution of the arch, which steps down towards the rear wall of the furnace chamber, forms a buffer step for the flame front, which allows to remove the mass of its fuel flow in the lower part of the water jacket. In the lower stage of the water jacket, the maximum heat removal occurs, where the water temperature rises sharply in a short period of time, which contributes to the uniform distribution of heat throughout its volume and prevents the formation of condensate on the walls of the flue channels.

The absence of condensate improves the heat transfer conditions, since there is an intensive heat exchange in the combustion chamber and gas flow space, the rate of circulation of the coolant in the heating system increases, and the efficiency of fuel use increases.

The heating boiler is illustrated by drawings, where in FIG. 1 shows a general view from the side; FIG. 2 is a section along A-A in FIG. 1, in FIG. 3 section bb in fig. 1, in FIG. 4 is a general front view, in FIG. 5 shows a section B-B in FIG. four.

The heating boiler consists of a housing 1 with a removable upper part 2, on which

- 1 013784 installed exhaust pipe 3 and with a gap - a casing 4 with a cover 5. In the case 1 there is a water jacket 6 with inlet 7 cold and outlet 8 hot water branch pipes and forming a gas collector 9 with the upper base of the case a chamber 10 with horizontal burners 11. A water jacket 6 enters the combustion chamber 10 and forms in it a stepped arch 12 with a slope to the rear wall 13. The combustion chamber 10 is in communication with the exhaust pipe 3 through a vertical gas flue and gas collector 9.

Vertical flue is made in the form of a series of parallel rectangular channels 14, evenly placed on the volume of the water jacket 6.

Heating water boiler works as follows.

When supplying liquid or gaseous fuel to horizontal burners 11 and setting it on fire, the flame front is directed to the lower stage of the roof 12, while the coolant in the water jacket 6 heats up intensively and transfers heat throughout the volume, heating the walls of the gas ducts 14, which receive flue gases . The heat removal rate from the hot flue gases due to the acceleration of the coolant inside the water jacket 6 is proportional to the number of calories formed in the combustion chamber 10. The flue gases release the heat of the liquid in the water jacket 6, then enter the gas collector 9, where they are subjected to injection resistance to stabilize the flow, and then exit through the exhaust pipe 3 to the atmosphere. Circulation of the coolant in the system is carried out through the inlet cold 7 and the outlet 8 hot water pipes.

The use of a heating water boiler of the proposed design will improve the safety, reliability and environmental efficiency of operation with fuel economy.

Claims (1)

A heating water boiler comprising a housing with a removable upper part, on which an exhaust pipe and a casing with a gap are installed with a gap, a water jacket placed in the housing with cold supply and hot water outlet pipes and forming a gas collection manifold in connection with the upper part of the housing, and in the lower the central part - a combustion chamber with a vault lowering to its rear wall, a burner device located in the combustion chamber, a vertical gas duct in the form of a series of parallel rectangular channels, uniformly distributed displacements by volume of the water jacket, characterized in that the set of the rear wall of the combustion chamber is formed stepwise lowered.