RU49956U1 - CONVECTIVE TYPE HEATING DEVICE - Google Patents

Abstract

The utility model relates to heat engineering, namely to metal devices for convective heating of air in residential and non-residential premises, operating on solid fuels based on wood. The convective-type heating device comprises a housing with an exhaust pipe and a firebox with a sealed door and an adjustable blower, an afterburner and combustion chamber ducts and afterburners communicating with the surrounding space through air-guiding windows on the housing surface. The afterburning chamber of the device is made in the form of a three-knee tubular duct with air nozzles at the inlets of each of the elbows located along the side surface of the combustion chamber. In this case, two elbows are located on opposite sides of the combustion chamber and communicate with the inputs with its cavity at its rear wall, and the outputs with the input of the third elbow, which is located between them above the combustion chamber and is connected to the exhaust pipe by the outlet. The casing is made in the form of a horizontal prism with slit-shaped air-guiding windows on inclined side faces and of a round shape on the upper horizontal face. The combustion chamber is made in the form of a horizontally located cylinder. The furnace chamber door is located on the end part of the latter and is equipped with a viewing window made of heat-resistant glass. The blower, made in the form of blinds, is located under the door of the combustion chamber.

Description

The utility model relates to heat engineering, namely to metal devices for convective heating of air in residential and non-residential premises, operating on solid fuels based on wood.

Known designs of solid metal furnaces operating on the principle of intense combustion. The disadvantages of such furnaces are low heat transfer, high fuel consumption, increased fire and burn hazard. In addition, the cyclical loading of fuel causes sharp changes in the temperature of the heated rooms, which largely affects the comfort of a person staying in them.

Known heating devices operating on the principle of prolonged combustion, in which an increase in efficiency is achieved due to more complete combustion of the fuel (see, for example, [1], [2], [3], [4], [5], [6], [7]). Almost all known devices of this type have a complex and labor-intensive construction. Thus, the execution of bodies made of bent pipes (or thin-walled profiles) and plates between them requires a large number of welding operations and high precision manufacturing. The disadvantage is the difficulty of access in the cavity of the air duct slit-shaped channels and to the surface of the combustion chamber during routine inspections and repairs. In addition, in devices [2] - [7] hot air (up to 200 ° C), formed in the form of two powerful streams, can have a destructive effect on fabric and plastic coatings.

The closest in design and functional features to the claimed utility model is a device comprising a housing with an exhaust pipe and a firebox with a sealed door and an adjustable blower, an afterburner and combustion chamber air ducts and afterburners communicating with the surrounding space through air-guiding windows on the housing surface . This device ("Heat Convector" [8]) is selected as a prototype.

The prototype has a very complex and low-tech design of the combustion chamber, the arch of which has the shape of an onion-shaped dome. For the manufacture of parts of this shape requires special equipment.

The task to which the claimed utility model is directed is to create a technologically advanced design of a convective type air heater, safe, economical and convenient to operate.

To solve this problem, in a device containing a chimney with a chimney and a fire chamber with a sealed door and an adjustable blower, a afterburner and burner ducts and afterburners communicating with the surrounding space through air-guiding windows on the housing surface, the afterburner is made in the form of a three-knee a tubular duct with air nozzles at the inlets of each of the elbows, which are located along the side surface of the combustion chamber, while two elbows are located along Various side of the furnace and communicated with its inputs cavity in its rear wall, and outputs - to the input of the third generation, which is arranged therebetween above the combustion chamber and outlet connected to an exhaust pipe.

The casing is made in the form of a horizontal prism with slit-shaped air-guiding windows on inclined side faces and of a round shape on the upper horizontal face.

The combustion chamber is made in the form of a horizontally located cylinder.

The furnace chamber door is located on the end part of the latter and is equipped with a viewing window made of heat-resistant glass.

The blower is made in the form of blinds and is located under the door of the combustion chamber.

With a relatively similar heat transfer efficiency, the proposed device has a simpler, more technological and less time-consuming design to manufacture than the prototype, and provides uniform dispersion of heated air in the surrounding space of the heated room.

The utility model is illustrated by drawings, where Fig. 1 shows a convection-type heating device, general view; figure 2 is the same, a top view; figure 3 is the same front view; figure 4 is a section aa of figure 2.

The heating device comprises a housing 1, an exhaust pipe 2, a combustion chamber 3 with an airtight door 4 having an inspection window of heat-resistant glass, and an adjustable blower 5 in the form of blinds, tubular ducts 6 and 7 of the afterburner, air nozzles 8 installed at the inlets of the ducts 6 and 7, slotted air ducts 9 formed by the inner surface of the casing 1 and the outer surface of the combustion chamber 3. The casing 1 is made in the form of a horizontally located multifaceted prism, on the faces of which there are through air guide windows 10, slit-shaped - on inclined side faces and round in shape - on the upper horizontal face. The flues 6 and 7 are located along the lateral surface of the combustion chamber 3 in the upper part of the device, while the flues 6 are located symmetrically with respect to the flues 7, and their inlets communicate with the cavity of the combustion chambers 3 at its rear wall, and their exits with the inlet of the flues 7 mounted above

a combustion chamber and communicating with its exit with a chimney 2 mounted on the rear wall of the housing 1.

The operation of the heating device is as follows.

Through the open door 4, fuel (firewood, wood waste, etc.) is loaded into the combustion chamber 3, open the dampers (not shown) on the exhaust pipe 2 and the blinds blew 5 and set fire to the fuel. Door 4 is gradually closed. After the emergence of hot gas traction, the air is sucked in through the holes of the blower 5 and the fuel burns with the release of heat and combustion products. From the chamber 3, the unburned part of the fuel in the form of components of the flue gases is discharged through the gas ducts 6 and the gas duct 7 connected in series to the exhaust pipe 2. In the gas ducts 6 and 7 of the afterburner, the unburned gaseous part of the fuel completely burns out, which is facilitated by the entry into it through the air nozzles 8 heated air from the ducts 9. The optimization of the fuel combustion process is carried out by adjusting the position of the blower blinds 5 and the shutters on the exhaust pipe 2.

When burning fuel, the walls of the combustion chamber 3 and the flues 6 and 7 of the afterburning chamber are heated. Under the influence of convective forces, the outside air from below through slit-like windows 10 on the lower inclined side faces of the housing 1 enters the cavity of the ducts 9, heats when it contacts the wall surface of the combustion chamber 1 and the flues 6 and 7, and enters the heated room through the windows 10 on the upper side ( horizontal and inclined) sides of the housing 1.

Sources of information taken into account when compiling a description of a utility model:

1. A.S.SSSR No. 1791677, M.cl. F 24 V 7/00, publ. 01/30/93.

2. USSR patent No. 1811572, M.cl. F 24 V 7/00, publ. 04/23/93.

3. RF patent No.2001352, M.cl. F 24 V 5/06, publ. 15. 10.93.

4. RF patent No. 2035009, M.cl. F 24 V 7/02, publ. 05/10/95.

5. RF patent No. 2035665, M.cl. F 24 V 7/02, publ. 04/20/95.

6. RF patent No. 2035666, M.cl. F 24 V 7/00, publ. 05/20/95.

7. RF patent No. 2124165, M.cl. F 24 V 7/00, publ. 12/27/98.

8. RF patent №2210035, M.cl. F 24 V 7/00, publ. 08/10/03 (prototype).

Claims (5)

1. A convection-type heating device comprising a housing with a chimney and housed in a furnace with a sealed door and an adjustable blower, an afterburner and combustion chamber ducts and afterburners communicating with the surrounding space by means of air guide windows on the housing surface, characterized in that the afterburner made in the form of a three-knee tubular duct with air nozzles at the inlets of each of the elbows, which are located along the side surface of the combustion chamber, while the elbows are located on different sides of the combustion chamber and communicate with the inputs with its cavity at its rear wall, and the outputs with the input of the third elbow, which is located between them above the combustion chamber and is connected to the exhaust pipe by the outlet. 2. The device according to claim 1, characterized in that the housing is made in the form of a horizontal prism with slit-shaped air-guiding windows on inclined side faces and of a circular shape on the upper horizontal face of the prism. 3. The device according to claim 1 or 2, characterized in that the combustion chamber is made in the form of a horizontally located cylinder. 4. The device according to claim 3, characterized in that the door is located on the front end wall of the combustion chamber and is equipped with a viewing window of heat-resistant glass. 5. The device according to claim 4, characterized in that it is blown out, made in the form of blinds and located under the door of the combustion chamber.