SOLID FUEL BURNING STOVE

Abstract

The solid fuel stove includes a combustion chamber having an air inlet and a gas outlet and two blowers driven simultaneously by a single motor. A first one of the two blowers is upstream of the air inlet and propels a comburent air flow in the combustion chamber. A second one of the two blowers is downstream of the gas outlet and draws an exhaust gas flow from the combustion chamber. Both blowers can advantageously be driven by a single motor.

Description

DESCRIPTION OF THE FIGURES

Further features and advantages of the present improvements will become apparent from the following detailed description, taken in combination with the appended figures, in which:

FIG. 1 is an cross-sectional isometric view of an example of the improved solid fuel stove;

FIG. 2 is a view similar to FIG. 1, showing the solid fuel stove from an opposite side;

FIG. 3 is a rear isometric view showing some of the parts of the solid fuel stove of FIG. 1;

FIG. 4 is a perspective view of an example of a blower assembly which can be used with the solid fuel stove of FIG. 1;

FIG. 5 is an exploded view of the blower assembly of FIG. 4; and

FIG. 6 is a perspective view of an alternate configuration to the blower assembly example of FIG. 4.

Claims

1. A solid fuel stove comprising a combustion air circuit having an intake passageway, a combustion chamber and an exhaust passageway in successive gas flow communication, an intake blower positioned in the intake passageway to blow comburent air to the combustion chamber, an exhaust blower positioned in the exhaust passageway to evacuate exhaust gasses from the combustion chamber, and a blower motor drivingly connected to both the intake blower and the exhaust blower.

2. The solid fuel stove of claim 1 further comprising at least one intake bypass aperture predesigned through the combustion chamber, and wherein the exhaust blower generates a greater flow rate than the intake blower when the blowers are in operation, thus maintaining a negative pressure in the combustion chamber and drawing ambient air into the combustion chamber through the at least one bypass aperture.

3. The solid fuel stove of claim 2 wherein the blower motor is directly connected to both the intake blower and the exhaust blower, to drive both blowers at the same rotation speed, and the exhaust blower has an impeller which is configured and disposed to generate a greater flow rate than the intake blower when both blowers are driven at the same rotation speed.

4. The solid fuel stove of claim 2 wherein the intake passageway defines a restricted area which limits the flow rate generated by the intake blower.

5. The solid fuel stove of claim 2 wherein the intake passageway includes a shutter allowing adjustment of the flow rate through the intake blower.

6. The solid fuel stove of claim 2 further comprising a door panel allowing access to the combustion chamber, the door panel having a window, and wherein a plurality of intake bypass apertures are located immediately below the window.

7. The solid fuel stove of claim 1 further comprising a burning pot positioned in the combustion air circuit, at an entrance to the combustion chamber, a solid fuel pellet reservoir having a pellet spout aligned with the burning pot, and a pellet feeder configured and adapted to carry pellets from the pellet reservoir to the pellet spout.

8. The solid fuel stove of claim 1 further comprising a heating air circuit having an inlet open to the ambient air, a heat exchanger traversing the combustion chamber, and an outlet, and a heating air blower for circulating ambient through the heating air circuit.

9. The solid fuel stove of claim 1 further comprising a blower motor rotation speed controller connected to the blower motor and allowing manual adjustment of the rotation speed of the blower motor by a user.

10. A solid fuel stove comprising: a housing having a combustion chamber with an air inlet and a gas outlet;an intake blower propelling a comburent air flow in the combustion chamber through the air inlet;an exhaust blower drawing an exhaust gas flow from the combustion chamber through the gas outlet, the comburent air flow being one of inferior to and equal to the exhaust gas flow and the pressure maintained in the combustion chamber being one of a negative pressure and a void pressure, relative to an ambient pressure; anda single motor operatively connected to both the intake blower and the exhaust blower.

11. A solid fuel stove as claimed in claim 10, wherein the motor comprises a driving shaft having two opposite ends, each opposite end simultaneously driving a respective one of the intake blower and the exhaust blower.

12. A solid fuel stove as claimed in claim 10, comprising an intake blower housing defining an intake blower chamber enclosing the intake blower and being in fluid communication with the air inlet of the combustion chamber, the intake blower housing having an air inlet in fluid communication with the combustion air chamber and restricting the air supply therein.

13. A solid fuel stove as claimed in claim 10, comprising at least one shutter for controlling at least one of the comburent air flow and the exhaust gas flow.

14. A solid fuel stove as claimed in claim 10, comprising a non hermetic door panel mounted to the housing and allowing access to the combustion chamber.

15. A solid fuel burning stove comprising: a combustion air circuit having an intake passageway, a combustion chamber having an air inlet connected to the intake passageway and a gas outlet, and an exhaust passageway connected to the gas outlet;a burning pot positioned in the combustion air circuit, proximate the air inlet of the combustion chamber;an intake blower associated with the intake passageway;an exhaust blower associated with the exhaust passageway;a blower motor drivingly connected to both the intake blower and the exhaust blower; andat least one intake bypass aperture predesigned through the combustion chamber and through which a limited flow rate of air is aspired when both the exhaust blower and the intake blower are in operation.

16. The solid fuel burning stove of claim 15 further comprising a door panel having a window, the door panel being openable to provide access to the combustion chamber, wherein the at least one predesigned intake bypass aperture is provided in the door panel, below the window.

17. The solid fuel burning stove of claim 15 wherein the motor is directly connected to both the intake blower and the exhaust blower, to drive both blowers at the same rotation speed, and the exhaust blower has an impeller which is configured and disposed to generate a greater flow rate than an impeller of the intake blower when both impellers are driven at the same angular speed.

18. The solid fuel burning stove of claim 15 wherein the intake passageway defines a restricted area which limits the flow rate generated by the intake blower.

19. The solid fuel burning stove of claim 15 wherein the intake passageway includes a shutter allowing adjustment of the flow rate through the intake blower.

20. The solid fuel burning stove of claim 15 further comprising a heating air circuit having an inlet, a heat exchanger extending through the combustion chamber, and an outlet.