RU145329U1 - FURNACE FOR MOBILE STRUCTURES WITH A MOBILE DAMPER AND A SPRAYER - Google Patents

Abstract

A furnace for mobile structures with a movable damper and spark arrester, comprising a housing in which a combustion chamber with a door is located, a grate, an ash pan with an ash pan drawer, a chimney, a protective casing-convector and supports, characterized in that the combustion chamber contains a damper with the possibility of its movement and a spark arrester adjacent to the combustion chamber, consisting of a cavity and a chimney pipe immersed in it.

Description

The utility model relates to heating devices operating on solid fuel, the main purpose of which is the heating of tents, mobile baths, other mobile facilities with the possibility of cooking hot food.

Known multifunctional camping stove, (RF patent No. 2229657, IPC F24C 1/16, F24C 13/00, publ. 05/27/2004) having a housing, in the lower part of which there is a firebox, a grill and a camera installed in the housing above the firebox. The camera is configured to accommodate a heat storage load or lattice shelves for smoking. The lattice installed above the furnace is hollow, the communicating cavity of the lattice is muffled on one side and hermetically connected to the internal cavity of the tank for heating water on the other hand.

The disadvantages of this furnace are constructive and technological complexity. This design is material intensive and quite expensive to manufacture. For its operation, the furnace requires the use of a gas or liquid burner, which increases its completeness and overall weight. In addition, it is a batch oven and is not suitable for use in camping conditions as a kitchen heating and cooking stove, which narrows its functionality.

The closest technical solution, the prototype, is a furnace (patent for utility model No. 70966, IPC F24C 1/16, publ. 02.20.2008) containing a housing in which a firebox with a door is located, a chimney, a chamber for generating steam, a heating tank water and the pipe is additionally equipped with an ash pan with an ash box made in the furnace body, a vertical screen - convector, a support that is attached to the body by means of guides, a flame chimney installed inside the furnace, which is made shorter than the furnace and is rigidly fixed, for example, by welding to the side walls of the casing, with gaps between its edge and the front wall of the casing, the chimney is formed by the gap between the edge of the flame striker and the rear wall of the casing, a channel formed by the flame chimney and the upper wall of the casing and the outlet pipe, while a grate made of two U-shaped blanks of sheet metal, welded at an angle to each other with the formation of stiffeners, and the chamber for the formation of steam is a steam generator formed by one or more profiles Rowan elements to form compartments disposed one above the other and the side wall connected to the housing channels overflowing water from the upper compartment into the lower and allows water evaporation from the metallic surface.

The disadvantages of this furnace is the lack of a spark arrester in its design, which makes it fire hazardous for use in mobile tent structures. In addition, it has a traumatic arrangement, the chimney pipe is located near its front end facing the user. The vertical stand of a hot chimney is located dangerously close to the user's face and when moving in a limited space of the tent, it is possible that the hot metal is accidentally touched by clothes or exposed parts of the body.

The objective of the proposed technical solution is to create a structurally simple, technologically advanced, safe heating and cooking device that can provide reliable protection against sparks from the chimney so that it can be operated as part of tent structures, while having a safety configuration and high efficiency.

The technical result of the utility model is to simplify the design of the furnace, reduce its material consumption, increase its manufacturability and the ability to optimally control the flame flow, while ensuring fire safety in all operating modes.

This object is achieved in that the furnace for mobile structures with a movable damper and spark arrester, contains a housing in which there is a combustion chamber with a door, a grate, an ash pan with an ash pan drawer, a chimney, a protective convector cover and supports, while the combustion chamber contains a damper with the possibility of its movement and adjacent to the combustion chamber spark trap, consisting of a cavity and a chimney pipe immersed in it.

In FIG. 1 shows a sectional view of the furnace with the position of the sliding ignition flap; in FIG. 2 shows a sectional view of the furnace with the position of the sliding shutter “operating mode”.

The furnace body consists of a combustion chamber 1 with a door 2, an grate 3, an ash pan 4 with an ash drawer drawer 5, a spark trap partition 6, a spark trap cavity 7, a chimney pipe 8, a modular modular chimney 9, a cooktop 10. Combustion chamber 1 is equipped with guides ( not shown in the figures), along which a movable shutter 11, manually controlled, for example, by means of a rod with a handle 12, can move. The furnace body has a protective guard in the form of a convector hood 13 and is supported by removable supports 14. In addition, the furnace can equipped with a tank for hot water (not shown in the figures), mounted on the modular assembly chimney 9 which in turn is put on the flue pipe 8.

The operation of the furnace is as follows.

The furnace is mounted on removable supports 14 and a modular chimney 9 is removed from its combustion chamber 1, which is stored there during transportation. The assembled modular chimney 9 is put on the nozzle of the chimney 8. Fuel (for example, firewood) is loaded into the combustion chamber 1 and set on fire. In this case, the ash drawer 5 is pulled out of the ash pan 4 by a certain distance, allowing air to enter the combustion area through the grate 3. The amount of air coming in for combustion is controlled by the degree of extension of the ash drawer 5. At the first stage, during the ignition and heating of the chimney walls 9 the flow from the combustion chamber 1 due to the position of the movable damper 11 is directed into the cavity of the spark arrester 7 along the shortest path. For this, the movable shutter 11 with the help of the rod 12 is extended to its extreme forward position. The task at the first stage of “ignition” is to provide the least flame resistance to the gas-flame flow. This allows you to melt the furnace and warm its chimney 9 faster without emitting smoke through the door 2 of the combustion chamber 1.

At the second stage, after heating the walls of the chimney 9, the pressure discharging force in it becomes strong enough so that it is possible to move (push) the movable damper 11 all the way back to the "operating mode" position. The gas-flame flow begins to move along a long path, passing the greatest distance under the plane of the hob 10, which quickly heats up. On the plane of the hob 10, if desired, you can put a heat-accumulating stone bookmark for organizing bath procedures, or use it for cooking. At the same time, the movable damper 11 provides, during operation of the furnace, the ability to control the degree of heating of its hob 10, for example, using a rod with a handle 12. If you want to reduce the degree of heating of the hob 10 and the boiling water in the pan, which stands on it, just push it move the movable damper 11 forward and redirect the gas-flame flow into the cavity of the spark arrester 7 and further into the nozzle of the chimney 8 and the chimney 9 in a short way, bypassing the hob 10. Intermediate positions of the movable damper 11 d are also possible For stepless adjustment of the degree of heating of the hob 10.

In the first position, "ignition" and the second position, "operating mode" equally effectively performs its function as a centrifugal spark arrester, which is arranged as follows. The cavity of the combustion chamber 1 is separated from the cavity of the spark arrester by means of a vertical partition of the spark arrester 6, which at the top does not reach the plane of the hob 10 for a certain distance, forming a sufficient hole for the passage of the gas-flame flow. The chimney pipe 8 has a protruding part at the top, on which the modular chimney 9 assembly column is mounted, and its lower part is immersed in the cavity of the spark trap 7 so below the upper cut of the partition of the spark trap 6 to cause the gas-flame flow to make a sharp 180-degree turn in the vertical plane. Particles of unburned fuel, which have any significant weight and the ability to long smoldering during a sharp turn of a gas-flame stream, are separated from it under the influence of centrifugal force. And they settle in the lower part of the spark arrester tank without being able to fly out into the chimney and damage, for example, the roof of the tent. In both the first and second positions of the movable shutter 11, this safety function works equally stably.

The proposed layout of the furnace compares favorably with the prototype in that the chimney 9 is removed from the front end surface of the furnace to the rear of the housing. Where the risk of unintentional user contact is minimal.

Introducing the user to such important functions as the separation of sparks and the possibility of stepless adjustment of the degree of heating of the hob 10, the proposed furnace, however, remains structurally and technologically extremely simple, which makes it suitable for mass production. In the transport position, this furnace has a small weight and dimensions.

The features of the proposed furnace design include the ability to dismantle the support legs and the modular chimney, and pack them inside the furnace to reduce transport dimensions. As well as the presence of a protective casing, convector, as an important element of consumer protection in confined spaces.

The increased fire safety of the proposed furnace design, provided by the presence of an integrated spark trap, allows it to be recommended for use in any frame tent structures that are sensitive to burning the tent with sparks, where the operation of conventional camping stoves is dangerous or impossible.

It can also be recommended for use inside automobile kungs, where the lowest risk of fire is required. It can be equally successfully operated both as a mobile bath stove and as an effective heating and cooking stove.

The ash drawer drawer 5 is designed to conveniently remove ash and adjust the air supply through the grate 3 to the combustion chamber 1.

The spark trap, in addition to its direct function of separating sparks, also performs the function of an effective heat exchanger, causing the gas-flame stream to move along a complex path before being released into the chimney and give more heat to heat the walls of the furnace body. The efficiency of the furnace is thereby increased, and the emission of soot and particles of unburned fuel is significantly reduced. More heat is directed to useful work to warm the room and less heat is released through the chimney to the outside. The presence of a spark catcher makes the chimney relatively colder compared to conventional once-through “stove-stoves” and this increases the level of safety of the chimney cutting unit where it passes through the tent roof.

The movable damper 11 is important, not only the ability to regulate the degree of heating of the hob 10, but also because it provides the ability to reduce the hydraulic resistance of the chimney tract, providing quick ignition of the furnace at the stage of unstable smoke draft.

Claims (1)

A furnace for mobile structures with a movable damper and spark arrester, comprising a housing in which a combustion chamber with a door is located, a grate, an ash pan with an ash pan drawer, a chimney, a protective casing-convector and supports, characterized in that the combustion chamber contains a damper with the possibility of its movement and a spark arrester adjacent to the combustion chamber, consisting of a cavity and a chimney pipe immersed in it.