RU2845175C1 - Pellet burner for domestic furnace - Google Patents

Abstract

FIELD: heat engineering.

SUBSTANCE: pellet burner for a domestic stove includes a solid fuel supply branch pipe having a flange on the surface of which a shell is located. Mounting plate of the pellet burner includes hooks and a fixing device consisting of a handle connected to an axis that is conjugated with the fixing plate. Pellet burner basket includes a base with a row of teeth at one of its ends, wherein base end opposite the line of teeth has symmetric ledges directed in opposite directions. At the row of teeth location, the basket base is coupled with the sides made in the form of a plate with a row of teeth, wherein one of said beads is located perpendicular to base surface while another one is inclined to base surface while row of teeth of every said board is directed by its vertices to those of basket base. Basket is located in the housing cavity and is coupled with it by symmetrical protrusions located in the pellet burner housing slots, wherein basket base is arranged between through holes of rummaging door while basket board connected with its base is located under solid fuel feed pipe at inclination to base surface.

EFFECT: providing uniform air supply to combustion zone and solid fuel to support combustion process, excluding non-uniform combustion of solid fuel, which helps to maintain high temperature in combustion zone, and reducing labour intensity of maintenance process.

1 cl, 6 dwg

Description

Field of technology

The invention relates to the field of heat engineering, in particular, to the design of a pellet burner for a household stove and can be used for burning fuel pellets (solid fuel) for the purpose of obtaining thermal energy for household needs.

State of the art

Known is the utility model RU 98536 U1, "Device for burning granulated fuel", IPC F23B 40/04, F23K 3/14, F23K 3/22, comprising a base having an upper screw feeder connected to a hopper, a lower screw feeder with a plate burner and a fan. The outlet end of the upper screw feeder is connected to the inlet end of the lower screw feeder through a shaft. A cut-off valve is installed in the shaft, made in the form of a hollow cylinder installed across the shaft, and a multi-blade rotor placed in the cylinder. The screw and rotor are connected to a common engine through a gear transmission. The screw is connected to the same gear transmission through a controlled clutch. The plate burner has openings on the periphery for supplying air from the fan to the combustion zone, as well as a central opening into which the sharply curved outlet end of the lower screw feeder is led.

The disadvantages of this solution are the impossibility of using this device for burning granulated fuel in a household stove by installing it in the firebox stud hole, uneven air supply to the plate burner since there is no air supply from the bottom of the plate burner to the combustion zone. (RU 98536 U1, http://new.fips.ru).

Known is invention RU 2420690 C2, "Installation for burning granulated fuel", IPC F23B 40/04, F23N 3/00, containing a burner consisting of a housing, a head, an air distribution manifold, a flange and a screw for feeding granulated fuel from a storage bin, a device regulating the air supply, attached to the burner flange and having a connection via channels with the burner head and, accordingly, a connection via channels with the boiler, a unit regulating the supply of cold and hot coolant, fixed on the burner housing, an iris damper installed between the bin and the screw, a remote automation shield.

The disadvantages of this solution are the impossibility of using this installation for burning granulated fuel in a household stove by installing it in the firebox stud hole, uneven air supply to the granulated fuel combustion zone due to the lack of air supply to the lower part of the combustion zone from the bottom of the burner head. (RU 2420690 C2, http://new.fips.ru).

Of the known solutions, the utility model RU 199141 U1, "Pellet burner with a movable grate", IPC F23J 1/06, containing a metal housing coupled with a loading pipe having a built-in check valve, is close to the declared object. The loading pipe has an inspection hatch through which it is possible to quickly clean the cavity in which the check valve is located from carbon deposits. A sleeve for attaching a temperature sensor is fixed to the pellet supply pipe. A mounting flange is fixed to the housing for attaching the burner in the housing of the heating unit. In the combustion chamber, replaceable protective elements are installed using fastening screws - the upper and side plates made of heat-resistant material, which prevent overheating and burnout of the burner housing. Fuel combustion occurs on a movable grate made of heat-resistant steel plates. During burner operation, the movable sections of the grate move back and forth relative to the fixed sections at a frequency set in the control unit. The upper movable grate plate has a rim that prevents pellets from falling out of the combustion chamber prematurely, but does not prevent cleaning from solid combustion products. The movable grate plates are driven by an electric drive via a crank and slide freely along the support. An internal burner ash pan is located under the movable grate, which has a handle for pulling out. Combustion air is supplied by a fan, the rotation speed of which is regulated by the control unit. The pellet burner is ignited by supplying power from the control unit to the ignition device, consisting of a housing and a heating element. A heat-insulated tube is fixed in the burner housing, in which a photo sensor is located, one end of which is directed at the opening in the vertical part of the inclined tray. The burner housing is covered with a casing that performs a decorative and protective function. The burner is equipped with a control unit that provides automatic loading of granulated fuel (pellets) by means of an external auger through the loading pipe into the combustion chamber.

The disadvantages of this solution are the impossibility of using this pellet burner in a household stove by installing it in the firebox studding hole, uneven air supply to the fuel combustion zone due to the lack of air supply to the upper part of the burner combustion chamber. (RU 199141 U1, http://new.fips.ru).

The essence of the invention

The objective of the present invention is to develop a pellet burner with the possibility of its installation in the stud opening of the firebox of a household stove closed by a firebox door, the design of which ensures a uniform supply of air to the combustion zone and solid fuel to maintain the combustion process, eliminates uneven combustion of solid fuel, helps maintain a high temperature in the combustion zone, and reduces the labor intensity of the maintenance process.

The set task is solved due to the fact that the solid fuel supply pipe (2) of Fig. 1 has a flange (6) on the surface of which a shell (7) is located. The mounting plate (5) of Fig. 1, 3, 4 contains hooks (9) of Fig. 1, located in its lower part, as well as a retainer consisting of a handle (10) connected to an axis (11), which is coupled with a retaining plate (12). The basket (3) of Fig. 5 of the pellet burner includes a base (13) in the form of a horizontally located plate with a row of teeth (14) of Fig. 6 at one of its ends, wherein the end of the base (13) opposite from the row of teeth (14) has symmetrically located projections (15) directed in directions opposite to each other. At the location of the row of teeth (14) of Fig. 6, the base (13) of the basket (3) is connected with sides (16) made in the form of a plate with a row of teeth, wherein one of the sides (16) of Fig. 5 is located perpendicular to the surface of the base (13), the other at an angle to the surface of the base (13), and the row of teeth (14) of Fig. 6 of each of the sides (16) is directed with its tops to the row of teeth (14) of the base (13) of the basket (3). The base (13) of Fig. 6, at the location of the row of teeth (14), has symmetrically located projections (15) directed toward the row of teeth (14) of the base (13). The basket (3) of Figs. 1, 5, 6 is located in the cavity of the housing (1) of Fig. 1 and is connected to it by symmetrical projections (15) of Fig. 6, directed in opposite directions from each other, located in the grooves (17) of Fig. 1 of the body (1) of the pellet burner, wherein the base (13) of Fig. 5 of the basket (3) is placed between the through holes (8) of Fig. 2 of the stud door (4), and the side (16) of Fig. 5 of the basket (3) connected with its base (13), at an angle to the surface of the base (13), is located under the solid fuel supply pipe (2) of Fig. 1.

A pellet burner for a household stove comprises a body (1) Fig. 1, a solid fuel supply pipe (2), a basket (3) Fig. 5, a locking door (4) Fig. 1, a mounting plate (5) Fig. 3.

The solid fuel supply pipe (2) of Fig. 1 is connected to the body (1) of the pellet burner and has a flange (6) on the surface of which a shell (7) is located. This design forms a simple detachable connection between the solid fuel supply pipe (2) and the hopper, which reduces the labor intensity of the pellet burner maintenance process due to the quick and easy connection/disconnection of the solid fuel supply pipe (2) with the hopper. The hopper is installed on the surface of the flange (6), while the shell (7) is located in the cavity of the hopper, eliminating its displacement along the surface of the flange (6).

The stud door (4) Fig. 1 is hingedly connected to the body (1) of the pellet burner and has through holes (8) Fig. 2 for supplying air into the cavity of the body (1) Fig. 1. The through holes (8) Fig. 2 of the stud door (4) allow air to flow into the upper, middle and lower parts of the fuel combustion zone, thereby ensuring a uniform supply of air into the combustion zone.

The mounting plate (5) of Fig. 1, 3, 4 is connected to the body (1) of Fig. 1 of the pellet burner along its outer surface and has hooks (9) located in the lower part of the mounting plate (5), a retainer containing a handle (10) connected to an axis (11), which is connected to a retaining plate (12). This design allows the pellet burner to be installed in the caulking hole of the firebox of a household stove, and also forms a simple detachable connection between the mounting plate (5) and the body of the household stove, which reduces the labor intensity of the pellet burner maintenance process.

The basket (3) of Fig. 5 includes a base (13) in the form of a horizontally located plate with a row of teeth (14) of Fig. 6 at one of its ends. The end of the base (13) opposite to the row of teeth (14) has symmetrically located projections (15) directed in opposite directions from each other. The base (13) of Fig. 6 of the basket (3), at the location of the row of teeth (14), is connected with sides (16) made in the form of a plate with a row of teeth (14), wherein one of the sides (16) of Fig. 5 is located perpendicular to the surface of the base (13), the other at an angle to the surface of the base (13), and the row of teeth (14) of Fig. 6 of each of the sides (16) is directed with their tops toward the row of teeth (14) of the base (13) of the basket (3). The base (13) of Fig. 6, at the location of the row of teeth (14), has symmetrically located projections (15) directed toward the row of teeth (14) of the base (13). The side (16) of Fig. 5, located at an angle to the surface of the base (13) of the basket (3), allows the solid fuel to roll into the combustion zone, wherein the solid fuel located on the inclined side (16), as the fuel burns in the combustion zone, slides into the combustion zone and ignites, which ensures a uniform supply of solid fuel to the combustion zone to maintain the combustion process, and also eliminates uneven combustion of the solid fuel. The space between the teeth of the row of teeth (14) of Fig. 6 of the side (16) inclined to the surface of the base (13) allows the air flow to enter the middle and upper parts of the fuel combustion zone. The space between the teeth of the row of teeth (14) of the base (13) allows the air flow to enter the lower part of the fuel combustion zone, while through the space between the teeth of the row of teeth (14) of the base (13) ash and cinders, under their own weight, are removed from the fuel combustion zone to the inner surface of the body (1) of Fig. 1 of the pellet burner. Such a design ensures a uniform supply of air to the fuel combustion zone. The sides (16) of Fig. 5 heat up as the solid fuel burns, with subsequent heat release, which helps maintain a high temperature in the combustion zone.

The basket (3) of Fig. 1, 5, 6 is located in the cavity of the housing (1) of Fig. 1 and is connected to it by symmetrical projections (15) of Fig. 6, directed in opposite directions from each other, located in the grooves (17) of Fig. 1 of the housing (1) of the pellet burner, while the base (13) of Fig. 5 of the basket (3) is placed between the through holes (8) of Fig. 2 of the stud door (4), and the side (16) of Fig. 5 of the basket (3), connected to its base (13), at an angle to the surface of the base (13), is located under the solid fuel supply pipe (2) of Fig. 1. This design allows the basket (3) to be quickly pulled out of the cavity of the housing (1) for its maintenance or replacement.

The technical result of the proposed solution is the creation of a pellet burner, with the possibility of its installation in the stud hole of the firebox of a household stove closed by a firebox door, the design of which ensures a uniform supply of air to the combustion zone and solid fuel to maintain the combustion process, eliminates uneven combustion of solid fuel, helps maintain a high temperature in the combustion zone, and reduces the labor intensity of the maintenance process.

Brief description of the drawings:

Fig. 1 - schematic representation of a pellet burner for a household stove. Side view.

Fig. 2 - schematic representation of a pellet burner for a household stove. Front view.

Fig. 3 - schematic representation of a pellet burner for a household stove. Rear view.

Fig. 4 - schematic representation of a pellet burner for a household stove. Top view.

Fig. 5 - schematic representation of the basket of a pellet burner for a household stove. Side view.

Fig. 6 - schematic representation of the basket of a pellet burner for a household stove. Top view.

Brief description of design elements:

1 - body;

2 - solid fuel supply pipe;

3 - basket;

4 - lacing door;

5 - mounting plate;

6 - flange;

7 - collar;

8 - hole;

9 - hook;

10 - handle;

11 - axis;

12 - fixing plate;

13 - base;

14 - row of teeth;

15 - protrusion;

16 - side;

17 - groove.

Implementation of the declared decision

A pellet burner for a home stove works as follows.

The pellet burner is installed in the caulking hole of the firebox of the household stove. The firebox door of the household stove is opened. Using the hooks (9) of Fig. 1, the mounting plate (5) is hooked onto the housing of the household stove, in the lower part of the caulking hole of the firebox, and the mounting plate (5) of the pellet burner is fixed motionless on the housing of the household stove by turning the handle (10), thereby engaging the fixing plate (12) with the housing of the household stove, in the upper part of the caulking hole of the firebox. The solid fuel supply pipe (2) is connected to the hopper, placing it on the surface of the flange (6). Solid fuel is loaded into the hopper. Some of the fuel from the hopper, under its own weight, enters the basket (3) of Fig. 5 through the solid fuel supply pipe (2), namely, it rolls down the inclined surface of the side (16) of the basket (3) onto a row of teeth (14) of Fig. 6 of the base (13), into the space between the sides (16) of Fig. 5. Open the stud door (4) of Fig. 2 of the burner and ignite the solid fuel in the basket (3) of Fig. 5. Close the stud door (4) of Fig. 1. Air through the openings (8) of Fig. 2 in the stud door (4) enters the fuel combustion zone, while through the opening (8) of the stud door (4), located above the base (13) of Fig. 5 of the basket (3), air enters the middle and upper parts of the fuel combustion zone, and through the opening (8) of Fig. 2 of the stud door (4), located below the base (13) of Fig. 5 of the basket (3), air enters the lower part of the fuel combustion zone through the space between the teeth of the row of teeth (14) of Fig. 6 of the base (13). Flue gases from the housing (1) of Fig. 1 pellet burner moves into the firebox of the household stove and then into the chimney of the household stove.

Claims (1)

A pellet burner for a household stove, comprising a housing coupled with a solid fuel feed pipe, characterized in that the solid fuel feed pipe has a flange on the surface of which a shell is located, the mounting plate contains hooks located in its lower part, as well as a retainer consisting of a handle connected to an axis that is coupled with a retaining plate, the basket of the pellet burner includes a base in the form of a horizontally located plate with a row of teeth at one of its ends, wherein the end of the base opposite from the row of teeth has symmetrically located projections directed in opposite directions from each other, at the location of the row of teeth, the base of the basket is coupled with sides made in the form of a plate with a row of teeth, wherein one of the sides is located perpendicular to the surface of the base, the other is at an angle to the surface of the base, and the row of teeth of each of the sides is directed with their tops to the row of teeth of the basket base, the base, at the location of the row of teeth, has symmetrically located projections, directed towards the row of teeth of the base, the basket is located in the cavity of the housing and is connected to it by symmetrical protrusions directed in opposite directions from each other, located in the grooves of the housing of the pellet burner, while the base of the basket is located between the through holes of the stud door, and the side of the basket, connected to its base, at an angle to the surface of the base, is located under the solid fuel supply pipe.