RU37185U1 - FURNACE FOR HEATING AND COOKING - Google Patents

Abstract

An oven for heating and cooking, comprising a welded case, a bottom of the case with openings, an ash pan under the bottom of the case, a furnace, a body which is located inside the casing with an air gap forming an air duct, a loading window with a door, a chimney, characterized in that in the upper part at least two partitions are fixed transversely at least two partitions at a distance from the side wall with the formation on opposite sides of the windows for the passage of flue gases in communication with the chimney; a recuperator having an apan for controlling the volume of secondary air supply to the furnace and a labyrinth passage for air formed by two metal plates, and openings for the passage of secondary air into the furnace are made in the housing wall from the heat exchanger side.

Description

Oven for heating and cooking

The utility model relates to heat generators of low power and is intended primarily for use in everyday life, in particular in household solid fuel heat generators for air heating.

Known heating and cooking stove according to the patent of the Russian Federation No. 2018059, containing a firebox with a grate, an ash pan, a casing and a protecting casing. The casing is fixed to the cooking floor and stand by means of jumpers in the form of narrow plates or rods. The casing and the casing formed a cavity around the firebox and ash pan and tapering upward, open in these directions.

The disadvantage of this furnace is the low quality of fuel combustion, due to which a significant emission of carbon monoxide into the atomosphere is inevitable, as well as the inability to control the combustion time of the fuel.

The closest in technical essence to the claimed) device is a furnace for heating and cooking according to the patent of the Russian Federation No. 2027953 adopted as a prototype, containing a housing, a furnace with a channel for supplying secondary air and a chimney, stove flooring and an air duct with a fan located between the furnace and the walls of the housing , the flue is located between the furnace and the air duct for the removal of flue gases into the chimney. The housing is made with a hinged lid, installed with the formation between it and the slab flooring of an additional section of the duct.

The disadvantage of this furnace is the lack of the ability to control the burning time of the fuel and low environmental friendliness due to the insufficient quality of fuel combustion. In addition, this furnace is designed for forced supply of secondary air by a fan, which requires a certain amount of electricity.

The purpose of the claimed utility model is to increase

furnace operating capabilities by improving the heat transfer conditions from the combustion products to the heating elements, providing the ability to control the burning time of the fuel and increase its environmental friendliness by ensuring complete combustion of the flue gases.

Advantageously, the claimed furnace differs from the prototype in that it does not require forced air supply, but operates on natural draft.

The specified technical result is achieved due to the fact that in the furnace for heating and cooking, containing a welded case, the bottom of the case with holes, an ash pan under the bottom of the case, a furnace, the case of which is located inside the case with an air gap forming an air duct, a loading window with a door, the chimney according to the claimed utility model in the upper part of the furnace body is transversely fixed at least two partitions at a distance from the side wall with the formation on the opposite sides of the windows for the passage of flue gas Communicating with the chimney is attached to the body of the furnace heat exchanger having a valve

MGG: F24B 7 / 00.7 / 04

regulation of the volume of secondary air supply to the furnace and the labyrinth passage for air formed by two metal plates, and openings for the passage of secondary air into the furnace are made in the housing wall from the recuperator.

The proposed set of essential features was not found in information sources during preliminary patent research and thus has novelty.

In FIG. 1 shows the inventive furnace for heating and cooking, General view, figure 2 presents its longitudinal section.

The furnace for heating and cooking contains a welded housing 1, which is a firebox installed on the legs 2, the bottom of the housing 3 with holes for the passage of primary air, a tray with a sliding ash pan 4, a loading hole 5 with a pivot door b, equipped with a spring latch to prevent spontaneous opening the door. At least two partitions 7 are installed transversely inside the furnace body with the formation of windows 8 at their opposite ends, communicating with the chimney 9 and forming a labyrinth passage for gorens products. A recuperator 10 is mounted above the door to the furnace body. Two transverse ones. metal plates 11 installed at a distance from the side walls in the recuperator also form a labyrinth passage for air flow. In the housing wall from the recuperator side, at the level of the lower section of the labyrinth passage, holes are made for the passage of secondary (heated) air into the combustion zone of the furnace.

The recuperator is equipped with a valve 12 for regulating the volume of supply of the secondary heated air to the combustion zone by changing the flow area between one of the transverse plates 11 and the side wall of the recuperator.

The body of the furnace 1 is surrounded by a casing 13 with the formation of an air gap 14 between them. In the upper part of the body there is a plate 15. The inventive device operates as follows: Cooking mode.

Having opened the ash pan 4, first, small chips for kindling are loaded through the loading window 5, and then the main fuel, for example, firewood, is loaded. The valve of the recuperator 12 must be closed. Hot combustion products, passing through the labyrinth between the partitions 7, heat the wall of the furnace body 1 and the air in the air gap 14 between the body 1 and the casing 13. A powerful convective air flow is generated along the hot walls of the body. A plate 15 is heated, on which food can be heated and cooked. Heating mode.

At the beginning of the active fuel combustion process, the ash pan 4 must be pushed as far as it will go, open the rectifier valve 12 and set the burning time on the dial on the recuperator case. The burning time depends on the volume of heated secondary air entering the combustion zone. The recuperator provides due to the supply of secondary heated air a gas-generating mode of fuel combustion, i.e. The gases formed in the furnace during smoldering are burned to the end in the upper part of the furnace and in the internal labyrinth gas duct, providing clean combustion. By controlling the volume of secondary air supply, the combustion process of one loading batch of fuel can be extended up to 10 hours.

The use of new features favorably distinguishes the inventive oven for heating and cooking and allows you to:

- intensify heat transfer by improving heat transfer conditions from the combustion products to the heating elements and thereby increase

K.P.D.,

- - significantly reduce fire hazard, -

provide the ability to control the duration of fuel combustion,

-make the operation of the furnace environmentally friendly by ensuring complete combustion of the flue gases.

Applicants:

 - V.G. Jocks

A.A. Zhokin

Claims (1)

An oven for heating and cooking, comprising a welded case, a bottom of the case with openings, an ash pan under the bottom of the case, a furnace, a body which is located inside the casing with an air gap forming an air duct, a loading window with a door, a chimney, characterized in that in the upper part at least two partitions are fixed transversely at least two partitions at a distance from the side wall with the formation on opposite sides of the windows for the passage of flue gases in communication with the chimney; a recuperator having an apan for controlling the volume of secondary air supply to the furnace and a labyrinth passage for air formed by two metal plates, and openings for the passage of secondary air into the furnace are made in the housing wall from the heat exchanger side.