JP3208041U - Rocket stove outside air introduction device - Google Patents

Abstract

In a rocket stove capable of taking air for combustion from the atmosphere outside the room, it is possible to easily introduce the outside air in consideration of the case where it is used indoors. An outside air introduction device for a rocket stove that is easy to remove is provided. SOLUTION: An outside air introducing device includes a burning port 1 for burning wood fuel, a heat riser 2 including a chimney in which a lower portion is connected to a burning port and covered with a heat insulating material, and gas is discharged from the heat riser to the outdoor atmosphere. The rocket stove comprising the smoke exhausting section 4 comprises an outside air introduction box 5 comprising a housing mounted so as to cover the firing port, and a duct 6 for connecting the outside air introduction box and the outside and taking in outdoor air. [Selection] Figure 1

Description

  The present invention relates to an outside air introducing device for a rocket stove which is a heat riser composed of an insulated chimney, which sucks air, improves combustion efficiency, and generates high-temperature combustion air.

  Conventionally, a rocket mass heater called a rocket stove capable of efficiently burning woody fuel such as firewood is known. The rocket mass heater is a combustion device that has a heat riser consisting of a chimney covered with a heat insulating material, maintains the inside of the chimney at a high temperature, and can achieve a combustion efficiency equivalent to that of a long chimney, A throat is connected to the lower part of the chimney in the heat riser, and an exhaust chimney is connected to the lower part of the chimney outside the heat riser. Such a rocket stove has various advantages such as good thermal efficiency, no limitation on the type of wood-based fuel, horizontal pulling from a fire outlet, no smoke, and a simple structure.

Utility Model Registration No. 3165517

  When a conventional rocket stove is installed indoors, there is a risk that indoor air consumption becomes high, causing an oxygen deficient state, or a negative pressure in the room causing smoke to flow backward. In particular, in high airtight and highly insulated houses in recent years, it is necessary to pay sufficient attention to the danger due to lack of oxygen. In consideration of the case where the rocket stove is used indoors, this device makes it possible to easily introduce the outside air and allows the outside air introducing device to be easily removed when used outdoors. .

  The present invention is a rocket stove comprising a heat riser that communicates with a lower part of a fire outlet that burns wood fuel, and a smoke exhaust part that communicates with the heat riser and exhausts smoke. A covering outside air introduction box is detachably attached from the opening, and the outside air introduction box is connected to the outside to introduce outside air from the outside. The outside air introduction box is connected so as to cover the opening by inserting the opening into a connecting opening provided on the back surface, and is detachable from the opening. The outside air introduction box and the outside are connected by a duct, and either the duct connection port on the outside air introduction box side or the outdoor side opening of the duct is disposed at a position lower than the upper end of the opening. The outside air introduction box is provided with a wood fuel input section to the outlet and an ash scraping section that scrapes ash out of the outlet. A heat-resistant transparent portion that can visually recognize the combustion state of the fuel is provided in the wood fuel charging portion. A gap between the connection port and the opening portion of the outside air introduction box is closed with a gap closing plate inserted from above.

  According to this device, an outside air introduction box having a required volume is disposed at the opening of the rocket stove so as to cover the whole opening, and the outside air introduction box is communicated with the outside to introduce outside air from the outside. Therefore, it is possible to prevent the indoor air from being consumed during the combustion of the rocket stove, to prevent the room from becoming deficient, and to prevent the smoke from flowing backward due to the negative pressure in the room. Can be prevented.

  Since the outside air introduction box is separably arranged in the opening, when the rocket stove is arranged indoors for indoor combustion, the outside air introduction box can be easily attached and from the inside to the outside. Even when the rocket stove is moved, the outside air introduction box can be easily separated, and the use of the rocket stove in the room becomes very convenient.

External perspective view of a rocket stove provided with an outside air introduction box according to this device Side view Plan view of outside air introduction box Front view Side view Rear view of outside air introduction box with gap blockage plate attached Perspective view of gap blockage plate The perspective view which shows the state which has arrange | positioned the rocket stove which attached the external air introduction box concerning this invention indoors

  An embodiment of this invention will be described in detail below. Referring to FIGS. 1 and 2, the rocket stove is composed of a burning mouth (1), a heat riser (2), a cooking part (3) and a smoke exhausting part (4). The firing port (1) includes a fuel input port (10) that opens upward in a trumpet shape, and a lateral passage (11) that connects the lower portion of the fuel input port (10) to the heat riser (2). An outside air introduction box (5) is attached to the opening (1) and covered.

  The heat riser (2) is composed of an internal chimney (20) insulated by a heat insulation cylinder, and an external chimney (21) is provided on the outside. The two chimneys (20) and (21) are connected to each other at the upper part. Yes. A lateral passage (11) of the firing port (1) is connected to the lower end of the internal chimney (20).

  The cooking unit (3) includes a space having a required volume connected to a side surface of the heat riser, and an oven (30) is detachably or fixedly disposed therein. The heat riser (2) and the cooking unit (3) are cut off by a partition, and a passage that communicates both (2) and (3) is opened below or above the partition. The oven (30) consists of a roughly rectangular box whose front can be opened and closed with a door (31). The top, bottom, back and left and right sides except the front are exposed in the cooking unit (3). It is heated by hot air passing through. In addition, a cooking part is not limited to this structure. You may connect with the upper part of a heat riser. In this case, the smoke exhaust section is connected to the lower part of the external chimney. Moreover, the cooking part (3) is not essential. It may be a rocket stove with a structure that exhausts smoke directly from the heat riser (2) or the external chimney (21).

  The smoke exhaust section (4) comprises a smoke exhaust cylinder (40), the upper end extends to the outdoors, and the gas exhausted from the heat riser is exhausted to the outdoors. The smoke evacuation tube (40) and the cooking unit (3) are connected to each other through a substantially triangular connecting space (41), shielded by a partition wall, and communicated with each other through a passage opened above and below the partition wall. Is done. The upper passage of the partition wall may be opened and closed with a damper that can be operated from the outside.

  The upper surface of the external chimney (21) is preferably formed on a horizontal flat surface, and cooking utensils such as pots, kettles, kettles, etc. are placed on the flat surface and heated by hot air that passes through the inside. Can be done. A circular opening having an opening / closing lid may be provided on the upper surface of the heat riser (2), and the upper portion of the heat riser may be opened to directly heat the cooking utensil placed on the upper surface.

  The outside air introduction box (5) is composed of a casing having a required volume capable of covering the entire firing port (1), and as shown in FIG. 3, a fuel entry port that can be opened and closed by a fuel entry door (50) on the upper surface. Is provided. The fuel entry door (50) is formed with a viewing window (51) fitted with heat-resistant glass so that the combustion state of the firing port (1) can be visually confirmed from the outside. Further, an ash scraping outlet for scraping off the ash from the spout (1) is provided at the lower part of the front surface of the outside air introduction box (5) so as to be opened and closed by a door (52).

  As shown in FIGS. 2 and 5, an outside air introduction port (53) is opened on the side surface of the outside air introduction box (5), and is connected to the outdoors via a bellows-like duct (6). At least one of the outdoor air introduction port (53) and the outdoor opening of the duct (6) is disposed at a position lower than the upper end of the firing port (1) so that the duct (6) is in a chimney state (reverse flow). Do not become. The outside air introduction port (53) is preferably opened in the lower part of the side surface of the outside air introduction box (5), but may be formed on the bottom surface of the outside air introduction box (5). The duct (6) is not limited to the bellows shape, and may be a straight tube shape, for example.

  As shown in FIG. 8, the rocket stove of the present invention is placed with the outside air introduction box (5) and the fixed leg (12) fixed with screws or the like on the floor surface (7) laid with heat-resistant bricks. In addition, a heat-resistant shielding wall (8) is provided to protect the indoor wall. In order to protect the ceiling, it is preferable to install a heat shield (9) near the ceiling. When the rocket stove is used outdoors, it is preferable to replace the fixed leg (12) with a caster. This facilitates the movement of the rocket stove outdoors.

  As shown in FIGS. 6 and 7, the outside air introduction box (5) is charged with the opening (1) from the connecting port (54) formed on the back surface, and the opening (1) is connected to the outside air introduction box (5). Cover with. (55) is a gap closing plate for closing the gap between the connecting port (54) and the firing port (1), and is provided between the outside air introduction box (5) and the outer surface of the rocket stove via the opening (56). Inserted from above, the flange (57) is fixedly attached to the upper surface of the outside air introduction box (5). The gap blockage plate (55) can reduce the gap between the outside air introduction box (5) and the spout (1), and can suppress indoor air suction and smoke outflow from the gap.

  When the fuel inlet door (50) of the outside air introduction box (5) is opened, soot is introduced into the fuel inlet (10) of the outlet (1) and ignited, the combustion air passes through the side passage (11) and passes through the internal chimney. Ascend in the internal chimney from the bottom of (20) and enter the external chimney (21). Since the combustion air flows through the insulated internal and external chimneys, the combustion air is kept at a high temperature and intake power is increased, combustion efficiency is improved, complete combustion is achieved, and soot generation can be suppressed. . Since the inside pressure of the outside air introduction box becomes negative with combustion, outside air is sucked into the outside air introduction box through the duct (6).

(1) Mouth mouth
(2) Heat riser
(3) Cooking department
(4) Smoke exhaust section
(5) Outside air introduction box
(6) Duct
(7) Floor surface
(8) Heat shield wall
(9) Heat shield
(10) Fuel inlet
(11) Side passage
(12) Fixed leg
(20) Internal chimney
(21) External chimney
(30) Oven
(31) Door
(40) Smoke stack
(41) Connected space
(50) Fuel input door
(51) Peep window
(52) Door
(53) Outside air inlet
(54) Connection port
(55) Gap closing plate
(56) Opening
(57) Flange

Claims (6)

  A rocket stove comprising a fire outlet that burns wood fuel, a heat riser that consists of a chimney that is connected to the bottom of the fire mouth and covered with a heat insulating material, and a smoke exhaust section that discharges gas from the heat riser to the outdoor atmosphere The outside air introduction device for a rocket stove comprising: an outside air introduction box comprising a housing mounted so as to cover the opening, and a duct for connecting the outside air introduction box and the outside and taking in outdoor air.   The opening on the outside air introduction box side to which the duct is connected and at least one of the opening on the outdoor side to which the duct is connected are disposed at a position lower than the upper end of the opening. The outside air introduction device for a rocket stove according to 1.   The outside air introduction device for a rocket stove according to claim 1 or 2, wherein the outside air introduction box is detachably attached to the opening.   3. The outside air introduction device for a rocket stove according to claim 1 or 2, wherein an inlet for introducing wood fuel is provided in a firing port at an upper portion of the outside air introduction box, and a door for opening and closing is provided at the inlet.   The rocket according to any one of claims 1 to 4, wherein a connecting port for inserting a firing port is formed on the back surface of the outside air introduction box, and a gap between the connecting port and the firing port is closed with a closing plate. Stove outside air introduction device.   A space where the rocket stove communicates with the heat riser that burns the wood fuel to the lower part, the smoke riser that communicates with the heat riser and exhausts smoke, and the space between the heat riser and the smoke exhaust part The rocket stove external air introduction device according to any one of claims 1 to 5, wherein the rocket stove is arranged so that cooking can be performed inside or above the space portion.

Images