SK5906Y1 - Fireplace insert and fireplace stoves with a convection outer shell with a device to vent header area - Google Patents

Abstract

Fireplace inserts and fireplace stoves containing a combustion chamber (1), doors (2), outer convection shell (3), whereby in the header area are swivel built a ventilation damper (5) allowing controlled flow of heated air in the header area.

Description

Technical field

The technical solution relates to a fireplace insert and a fireplace stove with an external convection jacket for solid fuel with a device for venting the above-door space.

BACKGROUND OF THE INVENTION

In the case of fireplace inserts and stoves with an external convection jacket and an unventilated overhead door (Fig. 1), the surrounding parts of the door construction, combustion chamber parts and convection jacket parts are locally overheated in this space. This results in the introduction of temperature stresses into the heater structure and thus an increased risk of damage to some parts.

In the case of ventilated above-door space a permanent gap (Fig. 2) with the door open is the possibility of sucking in smoke and thus penetrating it into the heated space, which is also an undesirable condition.

A particular need to address these deficiencies is shown in heaters of larger sizes, where the ratio of door width (B) to door height (H) is greater than 1.5 ((B / H)> 1.5).

The aim of the technical solution is to eliminate the above mentioned shortcomings and to improve the above-mentioned utility parameters with an emphasis on user comfort.

SUMMARY OF THE INVENTION

These drawbacks are largely eliminated by the fireplace insert and the fireplace stove with an external convection casing for solid fuel with an above-door space venting device comprising a combustion chamber, a door, an external convection case and an above-door venting device according to the present invention. In the above-door space there is a rotary built-in above-door vent flap, which allows regulated flow of heated air in the above-door space. Advantageously, the movement of the vent door is controlled by the movement of the door such that the vent door is coupled to the door by means of a transmission, wherein movement of the door from the closed position to the opening provides movement of the vent door from the open position to the closed position. Open to closed position moves the vent flap from closed to open position.

The advantage of this technical solution is to allow venting of the above-door space and at the same time the possibility of flue gases entering through the ventilated space into the heated space is prevented. By incorporating a vent door to the vent space, the convective heat transfer to the heated air is also increased compared to the non vented structure.

The moving vent door allows controlled air flow in the vent door between the combustion chamber and the convection jacket.

BRIEF DESCRIPTION OF THE DRAWINGS

The prior art is explained in more detail by means of Figures 1 and 2 in which:

FIG. 1 is a simplified cross-sectional view of a heater with a non-ventilated over-door space where the combustion chamber 1, the door 2, the outer convection jacket 3 with the non-ventilated superheated zone 4 is shown,

FIG. 2 is a simplified cross-sectional view of a heater having a permanently ventilated above-door space through slot X.

Fig. 3 is a simplified cross-sectional view of a heater with a built-in vent flap 5.

Fig. 4 shows, in a simplified manner, a detail of one of the possibilities of interconnecting the movement of the door 2 with the movement of the vent flap 5 by means of a lever gear 6.

Example of technical solution

Example 1

The fireplace insert according to FIGS. 3 and 4 comprising the combustion chamber 1, the door 2 and the outer convection jacket 3 was provided with a vent flap 5 which rotates from one end position - open (FIG. 4 solid line), after the other end position - closed ( Fig. 4 (dashed line) and allows a controlled air flow in the above-door space between the combustion chamber and the convection jacket 3.

SK 5906 Υ1

The movement of the vent flap 5 is by means of a lever gear 6 derived from the movement of the door 2, which in the present case is movable vertically in the direction of the arrows.

Upon lifting of the door 2, i.e. its opening, the lever 6 is relieved, which allows the vent flap 5 to be moved by its own weight to the closed position, thereby interrupting the possibility of air flow through the opening in the overhead door.

When closing the door, 2 inch of the door strikes the lever arm 6, rotates it and thus opens the vent flap 5 by means of the second lever arm.

Industrial usability

The technical solution can be used in the production of fireplace inserts and fireplace stoves for solid fuel.

Claims (2)

PROTECTION REQUIREMENTS A fireplace insert and a fireplace stove comprising a combustion chamber (1), a door (2), an external convection sheath (3), characterized in that they have a rotatable built-in vent door (5) enabling controlled flow of heated air in the overhead door. area. Fireplace insert and fireplace stove according to claim 1, characterized in that the vent flap (5) is connected to the door (2) by means of a gear (6), wherein the movement of the vent flap (5) from the open position to the closed position is movement of the door (2) from the closed position to the open position and movement of the vent flap (5) from the closed position to the open position is provided by moving the door (2) from the open position to the closed position.