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KR-20260063928-A - Pellet stove

KR20260063928AKR 20260063928 AKR20260063928 AKR 20260063928AKR-20260063928-A

Abstract

The present invention is a downward combustion type pellet stove in which pellets from a hopper (10) are supplied downward to a combustor (30) in a combustion chamber (20) for combustion, and the combusted ash falls into an ash tray (40) at the bottom of the combustion chamber (20); The above combustion device (30) comprises a base body (32) made of a plurality of perforated plates (32a, 32b) spaced parallel to each other at a predetermined vertical interval, and a combustion frame (34) attached to the upper part of the base body (32), wherein the front and left and right sides are made of a metal mesh (34a) having a predetermined mesh, and the rear is made of a plurality of metal pillars (34b) spaced at a predetermined interval. The perforated holes (h) of the perforated plates (32a, 32b) of the base body (32) are arranged to be staggered vertically from each other. In the combustion frame (34), pellets are supplied from the hopper (10) into the combustion frame (34) through the open top to perform combustion, and the ash remaining after combustion falls to the lower ash tray (40) through the base body (32) made of perforated plates (32a, 32b) or passes through the spaced metal pillars (34b) at the rear of the combustion frame (34) along with the combustion heat. It is discharged to the rear of the combustion chamber (20).

Inventors

  • 김병섭

Assignees

  • 농업회사법인지앤티주식회사

Dates

Publication Date
20260507
Application Date
20241031

Claims (5)

  1. A downward combustion type pellet stove in which pellets from the hopper (10) are supplied downward to the combustor (30) of the combustion chamber (20) for combustion, and the combusted ash falls into the ash tray (40) at the bottom of the combustion chamber (20); The above combustion device (30) is composed of a bottom body (32) made of a plurality of perforated plates (32a, 32b) spaced parallel to each other at a predetermined interval in the upper and lower directions, and a combustion frame (34) attached to the upper part of the bottom body (32), having a metal mesh (34a) with a predetermined mesh surrounding the front and left and right sides, and a plurality of metal pillars (34b) spaced at a predetermined interval in the rear. A pellet stove characterized in that the perforated holes (h) of the perforated plates (32a, 32b) are arranged vertically and horizontally in the bottom body (32), and the combustion frame (34) is designed so that pellets are supplied from the hopper (10) into the combustion frame (34) through the open top to allow combustion to take place, and the ash remaining after combustion falls through the bottom body (32) to the ash tray (40) at the bottom or passes through the spaced metal pillars (34b) at the rear of the combustion frame (34) along with the combustion heat and is discharged to the rear of the combustion chamber (20).
  2. A downward combustion type pellet stove in which pellets from the hopper (10) are supplied downward to the combustor (30) of the combustion chamber (20) for combustion, and the combusted ash falls into the ash tray (40) at the bottom of the combustion chamber (20); The above combustion device (30) is composed of a bottom body (32) made of a plurality of perforated plates (32a, 32b) spaced parallel to each other at a predetermined upper and lower interval, and a combustion frame (34) attached to the upper part of the bottom body (32), with a metal mesh (34a) having a predetermined mesh surrounding the left and right sides, the rear open, and a perforated plate (33) rotatably installed on the upper part of the front. A pellet stove characterized in that the perforated holes (h) of the perforated plates (32a, 32b) are arranged vertically and horizontally in the bottom body (32), and the combustion frame (34) is designed so that pellets are supplied from the hopper (10) into the combustion frame (34) through the open top to allow combustion to take place, and the ash remaining after combustion falls through the bottom body (32) to the ash tray (40) at the bottom or passes through the spaced metal pillars (34b) at the rear of the combustion frame (34) along with the combustion heat and is discharged to the rear of the combustion chamber (20).
  3. In claim 1 or 2, A pellet stove characterized in that the hopper (10) is formed to be wider at the top and narrower at the bottom, and a damper (14) for controlling the supply amount of pellets is installed on the side of the lower discharge port (12), wherein the damper (14) is composed of a plurality of metal pins (14a), and the degree of opening of the discharge port (12) can be controlled by adjusting the number of the plurality of metal pins (14a) inserted into pin holes (12a) formed at regular intervals on the side of the discharge port (12).
  4. In claim 1 or 2, A pellet stove characterized in that an opening (21) is formed in the front of the combustion chamber (20), a cover (23) is placed over the opening (21) with its upper portion fixed to the combustion chamber (20) by a hinge (22), a front air inlet hole (23a) for air inflow into the combustion chamber (20) from the outside is formed in the cover (23), and a hopper housing (24) is formed on the upper side where the combustion device (30) is located, to which the discharge port (12) of the hopper (10) is detachably connected, and an upper air inlet (25) for air inflow into the combustion chamber (20) from the outside is formed on the outer edge of the hopper housing (24).
  5. In claim 4, The upper air inlet (25) is formed on all sides of the hopper housing (24), but the width of the upper air inlet (25) on the front side of the combustion chamber (20) is formed to be relatively narrower than the width of the upper air inlet (25) on the left and right sides and the rear side, and an outwardly flared slanted wing (26) is formed on the left and right sides of the upper air inlet (25), and the combustion chamber (20) is characterized by having a side air inlet hole (27) formed on the side where the combustion frame (30) is located to allow air to flow into the combustion chamber (20) from the outside.

Description

Pellet stove The present invention relates to a pellet stove used for winter heating, and more specifically, to a pellet stove used for concrete curing at construction sites, etc., in which the structure of the combustion chamber is improved and the airflow is induced three-dimensionally so that the combustion of pellets can continue for more than 18 hours, so that as the pellets dropped into the combustion chamber burn, the ash does not clump together and accumulate but crumbles and falls into an ash tray or is discharged to the outside through the chimney along with the fire. Generally, a pellet stove refers to a stove that uses wood pellets as fuel, which are processed by crushing forestry waste or felled wood into sawdust and then extruding it into a cylindrical shape. Regarding this, various prior art exists, including Patent Documents 1 to 5. Meanwhile, conventional pellet stoves were designed to continuously supply pellets from a hopper containing pellets by using a separate electric device to continuously feed pellets into the combustion chamber, or by using a plate-shaped damper to adjust the cross-sectional area of the discharge port at the bottom of the hopper. However, the method of controlling the amount of pellets supplied using an electric device had the problem of increasing the manufacturing cost of the pellet stove, as well as the problem of limitations on usage locations, additional electricity costs, and a high risk of breakdowns due to the use of electricity during the operation of the stove. In the method of controlling the amount of pellets discharged using a plate-shaped damper, it was discovered that a situation frequently occurred where the plate-shaped damper got stuck on the pellets because the discharge port at the bottom of the hopper was filled with pellets, making it difficult to control the opening. Furthermore, structural problems were found where soot or ash adhered thickly to the bottom surface of the plate-shaped damper due to the backflow of incomplete combustion gases, which also prevented proper control of the opening. Meanwhile, conventional pellet stoves can continue to burn as the ash falls into the ash tray when the pellets are completely burned inside the combustion chamber. However, since air is mainly supplied only from the front of the combustion chamber, the incomplete combustion of the pellets causes ash to accumulate in the combustion chamber over time, which blocks the airflow and reduces the heat output. In severe cases, the fire goes out, causing the stove to stop functioning and resulting in a problem where the curing effect at the construction site cannot be achieved. FIG. 1 is a perspective view of a pellet stove according to a first embodiment of the present invention, FIG. 2 is a partially exploded perspective view of the pellet stove shown in FIG. 1, Figure 3 is an enlarged view of the damper section at the bottom of the hopper. FIG. 4 is an enlarged perspective view of the combustion device shown in FIG. 2, FIG. 5 is a plan view of the combustor shown in FIG. 2, FIG. 6 is a cross-sectional view along line A-A of FIG. 1, FIG. 7 is a cross-sectional view along line B-B of FIG. 1, FIG. 8 is a side cross-sectional view illustrating the combustion state of a pellet stove according to the first embodiment of the present invention, FIG. 9 is a photograph of a pellet stove according to a second embodiment of the present invention, FIG. 10 is a photograph of a combustion device according to another embodiment of the present invention. Hereinafter, preferred embodiments of the present invention that do not limit the invention will be described in detail with reference to the attached drawings. FIGS. 1 to 8 illustrate a pellet stove according to a first embodiment of the present invention. The pellet stove (1) according to the present embodiment is a downward combustion type pellet stove in which pellets (P) from a hopper (10) are supplied downward to a combustor (30) in a combustion chamber (20) for combustion, and the combusted ash falls into an ash tray (40) at the bottom of the combustion chamber (20); The above combustion device (30) is composed of a bottom body (32) made of a plurality of perforated plates (32a, 32b) spaced parallel to each other at a predetermined interval in the upper and lower directions, and a combustion frame (34) attached to the upper part of the bottom body (32), with the front and left and right sides surrounded by a metal mesh (34a) having a predetermined mesh and the rear side having a plurality of metal pillars (34b) spaced at a predetermined interval. The perforated holes (h) of the perforated plates (32a, 32b) of the bottom body (32) are arranged to be staggered vertically from each other. The combustion frame (34) is designed so that pellets are supplied from the hopper (10) into the interior through the open upper part and combustion takes place, and the ash remaining after combustion falls through the bottom body (32) t