RU217894U1 - Ash box - Google Patents

Abstract

The utility model relates to an element of a heating device and can be used as part of stationary and mobile stoves, as well as barbecues or fireplaces. The essence of the utility model consists in an ash box made of sheet metal and containing a base and walls, on one of which a handle is made on the outside of the box, and in the base there are slots that do not intersect each other with a width of not more than 0.3 mm. The technical result, which the utility model is aimed at, is to reduce the risk of a defect in the ash box, while maintaining the possibility of transporting a non-combustible residue in the ash box. 3 w.p. f-ly, 2 ill.

Description

The utility model relates to an element of a heating device and can be used as part of stationary and mobile stoves, as well as barbecues or fireplaces.

A universal grate is known, made of sheet metal and containing a base with two side and one front wall with a handle, while the base is made of U-shaped profiles, on the surface of which round holes are made [RU 204943 U1, publication date: 06/21/2021 , IPC: F23H 17/12].

The disadvantage of the known technical solution is its limited scope, according to which the device can be effectively used only as a grate. At the same time, although the description of the patent indicates the possibility of using a universal grate as an ash box when placed in the blower chamber of the furnace with the base down, due to the presence of round holes on the base surface that ensure the passage of a fireproof residue in the form of ash through them, its use as an ash the box is not effective and appropriate, since the holes of the presented size do not delay and, in accordance with the main purpose of the grate, should not delay the passage of ash under its own weight, which, in the event of an attempt to transport ash in such a box, will lead to its spilling out.

As a prototype, an ash box made of sheet metal was chosen, and containing a base and walls, on one of which a handle is made on the outside of the box [RU 211667 U1, publication date: 06/16/2022, IPC: F24B 1/26, F24B 7/0].

The advantage of the prototype over the known technical solution is the possibility of its effective use as an ash box due to the absence of holes in the base and the elimination of the risk of fireproof residue spilling during its transportation.

However, the disadvantage of the prototype is the high risk of a defect in the ash box due to its cyclic thermal deformations that occur when the metal from which the box is made is heated during its operation. As a result, unevenly distributed thermal stresses may occur in the base of the box, just like in the entire box, in which less heated areas of the metal prevent thermal expansion of more heated areas, which can lead to deformation of the box, including its base, its thinning and, as a result - the occurrence of burnouts, which significantly reduces the reliability of the ash box.

The technical problem to be solved by the utility model is the need to improve the reliability of the ash drawer.

The technical result, which the utility model is aimed at, is to reduce the risk of a defect in the ash box, while maintaining the possibility of transporting fireproof residue in the ash box.

The essence of the utility model is as follows.

The ash box is made of sheet metal and contains a base and walls, on one of which a handle is made on the outer side of the box. In contrast to the prototype, non-intersecting slots with a width of not more than 0.3 mm are made in the base.

Non-intersecting, made at the base, provide compensation for thermal deformations and reduce the risk of an ash drawer defect. The width of the slots is no more than 0.3 mm, which ensures the preservation of the possibility of transporting non-combustible residue in the ash box. In the most preferred embodiment, the width of the slots can be 0.1-0.15 mm, which, while compensating for thermal deformations and reducing the risk of a defect in the ash box, further reduces the risk of very fine ash particles spilling through the slots and ensures that the possibility of transportation in the ash box remains fireproof residue.

The slots can have a longitudinal and transverse orientation relative to each other, which provides freedom for thermal expansion and contraction of the metal in different directions and allows you to compensate for the unevenness of thermal stresses arising in the metal, thereby reducing the risk of an ash box defect. The slots, regardless of their longitudinal or transverse orientation, are predominantly oblong in shape. Longitudinal and transverse slots can have a row arrangement. Within one row, both longitudinal or only transverse slots can be located, as well as longitudinal and transverse slots alternating with each other. When only longitudinal or only transverse slits are located inside one row, rows containing slits of different orientation from each other can alternate. In this case, the slots of different orientation, located in adjacent rows, can be located opposite or can be shifted relative to each other. When located inside one row of alternating longitudinal and transverse slots, slots of the same orientation, located in adjacent rows, can be made opposite each other. In the most preferred embodiment, when located inside one row of alternating longitudinal and transverse slots, slots of different orientations located in adjacent rows can be made opposite each other, which provides an additional reduction in the risk of an ash drawer defect with concomitant preservation possibility of transporting non-combustible residue in the ash box.

The base and walls form a container for collecting non-combustible residue in the form of ash and are made of sheet metal. In this case, the walls can also be made of sheet metal and can be obtained by bending the edges of the base.

A handle is made on one of the walls, which can be represented both as a separate element attached to the wall from its outer side using any known methods of detachable or permanent connection, or can be obtained by bending the sheet metal from which the wall is made.

A utility model can be made from known materials using known means, which indicates its compliance with the patentability criterion "industrial applicability".

The utility model is characterized by a set of essential features previously unknown from the prior art, characterized in that the base has slots that do not intersect each other with a width of not more than 0.3 mm, which ensures freedom of thermal expansion and contraction in areas where there are slots, while the width of the slots , which is not more than 0.3 mm, reduces the risk of spilling a fine fireproof residue, in the form of ash, through the slots, including during the thermal expansion of the metal.

This ensures the achievement of a technical result, which consists in reducing the risk of a defect in the ash box, while maintaining the possibility of transporting a fireproof residue in the ash box, thereby increasing the reliability of the ash box.

The utility model is characterized by a set of essential features previously unknown from the prior art, which indicates its compliance with the “novelty” patentability criterion.

The utility model is illustrated by the following figures.

Fig. 1 - ash box, isometry.

Fig. 2 - ash box installed in the ash collection compartment.

To illustrate the possibility of implementation and a more complete understanding of the essence of the utility model, an embodiment of its implementation is presented below, which can be modified or supplemented in any way, while the present utility model is by no means limited to the presented embodiment.

The ash box contains a base 1 made of sheet metal, walls 2 and a handle 3 obtained by bending the edges of the base 1. The base 1 has longitudinal and transverse slots 0.1-0.15 mm wide that do not intersect with each other. Longitudinal and transverse slots have a row arrangement, inside one row there are longitudinal and transverse slots alternating with each other, and slots of different orientation, located in adjacent rows, are located opposite each other.

The utility model works as follows.

The ash box is installed in the ash collection compartment of the furnace 4. During the combustion of solid fuel in the internal cavity of the furnace 4, the non-combustible residue in the form of ash moves into the ash box through the openings of the grate of the furnace 4. As a result of the thermal effect on the sheet metal of the base 1, temperature stresses compensated by the presence in the base of longitudinal and transverse slots that do not intersect with each other, providing freedom for thermal expansion or contraction of the base metal 1 in various directions. At the same time, due to the width of the slots, which is 0.1-0.15 mm, it is possible to collect ash in the box without spilling its volumes through the slots, which allows cleaning the compartment for collecting ash, including smoldering, without the need to transfer it to another capacity.

Thus, the technical result is achieved, which consists in reducing the risk of a defect in the ash box, while maintaining the possibility of transporting fireproof residue in the ash box, thereby increasing the reliability of the ash box.

Claims (4)

1. An ash box made of sheet metal and containing a base and walls, on one of which a handle is made on the outside of the box, characterized in that slots not intersecting with each other with a width of not more than 0.3 mm are made in the base. 2. Ash box according to claim 1, characterized in that the width of the slots is 0.1-0.15 mm. 3. An ash box according to claim 1, characterized in that the slots are oriented longitudinally and transversely relative to each other. 4. The ash box according to claim 1, characterized in that the slots have a row arrangement, while inside one row there are longitudinal and transverse slots alternating with each other, and the slots of different orientation, located in adjacent rows, are made opposite each other.

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