RU81565U1 - WATER BOILER - Google Patents

Abstract

Scope: Heating equipment and can be used for heating residential and other premises, as well as for hot water supply. The essence of the utility model: A water boiler contains a housing, a combustion chamber connected through a gas duct to a convection chamber, a water jacket, a gas duct made in the form of an opening in the upper cavity of a water jacket for connecting the combustion chamber to a convection chamber, the gas duct being located in the center of the boiler and through a convection chamber connected to the outlet chimney, the water tank is located above the convection chamber and connected to the water jacket by spiral tubes located in the convection chamber. Effect: Reducing the cost by reducing the metal consumption, a significant reduction in welding work in the manufacture.

Description

The utility model relates to heating equipment and can be used for heating residential and other premises, as well as for hot water supply.

It is known a water-heating device (hot-water boiler), comprising a body made in the form of a welded metal structure of a rectangular shape, a furnace and convection chambers, a water jacket with nozzles for receiving cold and removing hot water, a working and starting chimney, as well as a combined chimney, formed by the guide wall and the water tank connected to the water jacket (Declaration of Russian patent for utility model No. 49958 publ. 10.12.2005, Bull. No. 34).

The disadvantage of this boiler is that the design of the boiler is difficult to manufacture and does not allow the full use of the volume of the convection chamber.

Closest to the claimed solution is a hot water boiler, taken as a prototype, containing a housing, furnace and convection chambers, a water jacket, which is equipped with pipes for supplying cold and hot water. The combustion chamber has water pipes arranged in a zigzag pattern. (Declared patent of Russia for utility model No. 59218 publ. 10.12.2006 Bull. No. 34).

The disadvantage of this boiler is that the production requires a relatively large amount of welding work, and the difficulties of cleaning soot and soot do not allow its construction to be used in the production of solid fuel boilers.

The claimed utility model is based on the task, while maintaining high efficiency, to reduce the cost of the boiler by reducing the metal consumption, reducing the amount of welding work in production.

The problem is solved in that in the boiler, which contains a housing, a combustion chamber and a convection chamber, a water jacket and a tank connected to it through a gas duct, with nozzles installed on them for supplying cold and venting hot water, respectively, a chimney located in the lower part convection chamber, while the combustion chamber has a burner device, in accordance with the utility model, the gas duct is made in the form of an opening in the upper cavity of a water jacket for connecting the combustion chamber to convection , Wherein the gas duct located in the center of the boiler and through the convection chamber is connected to an output chimney, a water tank located above the convection chamber and connected to the water jacket helical tubes located in the convection chamber.

The above changes provide an optimal path for the passage of air, gas and combustion products through the combustion chamber, a gas duct located in the central part of the boiler, a convection chamber, a chimney, and this ensures almost complete transfer of heat from the combustion products to coolants. The passage of the hottest upward gas flow through the central part of the convection chamber eliminates heat loss on the periphery of the boiler.

The greatest efficiency of heat transfer from the combustion center and from the combustion products of the fuel is achieved if the heat-exchange elements are placed in the high temperature zone. This zone in the combustion chamber is located in its upper part, first of all, along its vertical walls, which are the inner surfaces of the water jacket. Through these surfaces, intense heat transfer from the fuel combustion source to the coolant is carried out.

Due to the presence in the boiler of a convection chamber located above the combustion chamber, a significant volume is formed for the circulation of combustion products, and also due to the fact that the output of combustion products occurs in the lower part of the convection chamber, combustion products with a higher temperature will be in the upper part because density is low. However, giving off heat, which means increasing density, they will fall down, displaced by hotter combustion products from the combustion chamber. Therefore, in the upper part of the convection chamber, another zone of high temperatures is formed. Replacing zigzag-shaped water pipes with spiral ones allows, without reducing the heat transfer area and the volume of the convection chamber, to reduce the number of welding joints and to abandon ineffective vertical cavities, replacing them with less metal-intensive vertical heat-insulating planes of the boiler body. These planes can be made removable, providing good access to the convection chamber.

Thus, the combustion products that have risen along the flue from the combustion chamber rush to the top of the convection chamber, and then gradually transferring heat through the surface of this chamber to the coolant, they will go down to the chimney, increasing their density, displaced by hotter ones from the combustion chamber.

The coolant in the heating system enters the lower part of the water jacket through a water pipe, gradually heating up and decreasing its density through a water jacket and spiral pipes, the water tank and outlet pipe enter the heating system. In this case, the oncoming movement of the combustion products from top to bottom in the convection chamber and the coolant from the bottom up allows the temperature of the combustion products at the outlet of the boiler to be reduced to almost the temperature of the coolant at the inlet of the boiler.

The proposed utility model allows to achieve a technical result, which consists in reducing the cost of the boiler by reducing

metal consumption of the boiler and reducing the amount of welding work in the manufacture of the boiler.

The essence of the proposed utility model is illustrated by drawings, where in Fig.1. presents a General view of the boiler, figure 2 is a view aa of figure 3, figure 3 is a view of the BB of figure 2.

The hot water boiler comprises a housing 1, a combustion chamber 2, a convection chamber 3 located above the combustion chamber 2, a burner 4 located in the combustion chamber, a water jacket 5 formed by the vertical walls of the housing 1, the bottom 6, the lower part 7 of the convection chamber 3, vertical walls and the upper part of the combustion chamber 2, the gas duct 8, which is made in the form of an opening in the upper cavity of the water jacket for connecting the combustion chamber 2 with convection 3, the gas duct being located in the center of the boiler and through convection The onion chamber 3 is connected to an outlet chimney 9 located at the bottom of the convection chamber 3, the convection chamber 3 having side 11, front 12 and rear 13 walls and a water reservoir 10 on top, a water jacket 5 and a water reservoir 10 connected by spiral tubes 14 , the water jacket 3 has an inlet pipe 15 for supplying cold water, and a water tank 10 an outlet pipe 16 for draining hot water, the pipes provide the connection of the boiler to the heating system, the bottom forms the lower part of the water tank head and provides through the holes made in the bottom, air access to the fuel combustion center.

The hot water boiler operates as follows. Fuel burns in the combustion chamber. At the same time, a zone of high temperatures is formed in its upper part and under its influence, the coolant entering through the pipe 15 from the heating system is heated. The density of the coolant decreases and it rises first to the top of the water jacket, then to the pipes 14. The products of combustion, having lost partially heat, but still remain enough

hot, through the flue located in the central part of the boiler rush to the upper part of the convection chamber 3, where another zone of high temperatures is formed. Further, transferring heat through the heat exchange surfaces of the water tank and spiral tubes 14 of the convection chamber 3, increasing the density, the combustion products descend, displaced by the hotter (less dense), which come from the combustion chamber 2, go into the chimney 9.

The coolant, gradually warming up and accordingly reducing the density, enters the tank 10 through the water pipes 14 and then through the pipe 16 to the heating system.

Thus, the proposed design of the hot-water boiler provides efficient heat transfer through the use of spiral tubes, which can significantly reduce the amount of welding work by moving the path of the upward flow of hot combustion products to the central part of the convection chamber, abandon the metal-consuming water jacket of the convection chamber, replacing it with heat-insulating removable walls, which in turn allows free access to the heat exchange elements of convection measures. The latter allows the proposed model to be used in the design of solid fuel boilers, as it provides easy access to remove soot.

In addition, in this model, in idle mode (the burner is turned off by the automatic system), cold air passing through the combustion chamber and the gas duct exits through the lower part of the convection chamber into the chimney, bypassing its main part, which virtually eliminates the washing out of heat from the boiler in idling, which means in general to increase efficiency.

Claims (1)

A water boiler, which contains a housing, a combustion chamber and a convection chamber connected to it through a gas duct, a water jacket and a tank with nozzles mounted on them, respectively, for supplying cold and draining hot water, the chimney located in the lower part of the convection chamber, while the combustion chamber has burner device, characterized in that the flue is made in the form of an opening in the upper cavity of the water jacket for connecting the combustion chamber to the convection, the flue being located in the center of the boiler as well as through the convection chamber is connected to the outlet chimney, a water tank is located above the convection chamber and connected to the water jacket by spiral tubes located in the convection chamber.