FI59864B - ANORDING FOR THE COMMITTEE AV LUFTVAEXLING OCH UPPVAERMNING AV EN BYGGNAD - Google Patents

Description

RSF7! [B] (11) * ADVERTISING PUBLICATION ς g O (L A

MA lJ '; UTLÄGGNINGSSKRIFT O? O O 4 ^ (51) Kv.ik? /Int.ci.1 P 24 P 5/00, F 24 B 1/18 g Q | ^ | | __ P | N LAND (21) PK «nttlh * k« mu * - PatantaniBkning j826lk (22) Hakamlspilvl - AniBkntngtdig 25.08.78 (23) AlkupiW * - Glltfgh «tid« g 25.08.78 (41) Tuffut Julkis · kxl - Blivlt offentllg 27.02 .79

Patent and Registry Holders .... ........, ,,,. ...

r * (44) Date of publication and publication

Patent and registration authorities of the United Kingdom of Great Britain and Northern Ireland , Box 1 + 5126, S-101 + 30 Stockholm 1 + 5, Sweden-Sweden (SE) (72) Peter Gavel, Stockholm, Börje Lundberg, Bandhagen, Sweden-Sweden (SE) (7I +) Berggren Oy Ab (5I +) The present invention relates to an apparatus for providing ventilation and heating in buildings, in particular dwellings, comprising means for heating and including heat exchange between the exhaust air and the supply air. duct for the import of combustion air.

As controlled ventilation is now required in residential buildings and at the same time there is a desire to recover heat from the exhaust air as accurately as possible, there is a need for a heat exchanger where the heat from the exhaust air can be transferred to the outside air. An increasing number of residential buildings, and especially those with electric heating, want to provide an alternative or additional heating device so that the efficiency of the heating device can be dimensioned low, and the most common is the so-called fireplace stove, which combines the comfort of an open fireplace with heating. However, a furnace equipped with a flue gas duct causes additional difficulties in a house with controlled ventilation and usually requires the possibility to change the ventilation system during the heating cycle.

2,59864

The object of the invention is to provide a device which can be used as a heat exchanger between the exhaust air and the supply air and which at the same time can act as a flue gas duct of the heating device. The device according to the invention is characterized in that the means for heat exchange between the exhaust air and the supply air comprise a flue gas duct leaving the heater and a partition wall adjoining this duct between the supply air flow space. , wherein during combustion the heat exchange takes place between the flue gases and the supply air, while otherwise the heat exchange takes place between the exhaust air and the supply air flowing through the flue gas duct through the combustion chamber.

Two, for example, selected embodiments of the device according to the invention will be described in more detail below with reference to the accompanying drawings.

Figure 1 shows a cross-section of a residential house in which all deaeration takes place through the device in question.

Figure 2 is a sectional view of Figure 1 taken along line A-A.

Figure 3 is a sectional view of Figure 1 taken along line B-B.

Fig. 4 shows, in the same way as Fig. 1, an embodiment in which a separate exhaust duct is provided for the kitchen fan.

The houses as such do not require any further description and consist of, among other things, kitchen K, living room V, bathroom and toilet BT and bedroom G. Deaeration is intended to take place through kitchen K and bathroom and toilet BT.

The heat exchange unit, which is indicated in its entirety by the number 1, essentially comprises a pipe 2 and a pipe 3 surrounding it. The pipes 3 form an intake opening for the outside air, which is best taken in next to the chimney 6, and lead to an air heating chamber 7 surrounding the furnace space 5 but separated therefrom.

The pipe 3 is surrounded for most of its length by a duct 8 which is provided with inlet openings 9 and 10 for recirculated air from spaces V and S. The duct 8 is connected in the chimney 6 to an intake pipe for outdoor air, so that in addition to the outdoor air, the recirculated air coming through the duct 8 can also be supplied to the air heating chamber 7.

Exhaust air from the building is taken from the kitchen K through the kitchen fan F and from the space BT via the duct 11. The duct 11 is provided with a grease filter FF and a general filter AF, which are best arranged in the cleaning and inspection space L adjacent to the space BT. The outlet 12 in the space BT is provided with a non-return valve 13

The duct 11 is connected to a duct 14 consisting of a sector-like part of the pipe 3, see Fig. 3, and a limited part of the chamber 7 leading to the ash box 15 of the stove 4, which acts as combustion air during combustion and otherwise passes through the firebox 5 and flue duct 2 to exit the chimney 6, giving off heat to the air flowing through the chamber 7 and the pipe 3.

In order to ensure the necessary air flow in the ducts 11 and 14 and in the flue gas duct 2, especially when combustion is interrupted, a suction fan 16 / is arranged at the upper end of the flue gas duct, which also ensures * that the required draft is maintained in the flue gas duct.

After the intake air and the recirculated air have passed through the pipe 3 and the space 7 in the stove 4 and then taken heat from the exhaust air or flue gases, respectively, air can be allowed to flow into the various spaces of the building through a duct 17 best equipped with a fan.

Overflow openings are best arranged between spaces with inflow openings and spaces which, due to their location, cannot be properly equipped with such openings.

When part of the air in the spaces V and S is allowed to flow into the duct 8 which opens next to the inlet of the fresh air pipe 3, part of the air is removed in the usual manner through the spaces K and BT so as to provide the necessary ventilation.

4,59864

The incoming fresh air is mixed with recirculated air from rooms V and S, which can be allowed to flow back to these rooms after heating.

The embodiment according to Figure 4 differs from the described embodiment in the following respects.

Instead of allowing the exhaust air to be removed through the kitchen fan F to pass through the firebox space and the flue gas duct, a separate exhaust duct 18 is provided for this, which preferably opens directly to the outside air in a separate chimney 19. This embodiment is advantageous when the fire protection regulations create an obstacle to the embodiment in which the exhaust air from the kitchen fan is also led to a common exhaust opening. From a thermal economy point of view, the losses become relatively small due to the relatively short operating periods of the kitchen fan.

The exhaust air, which is led out through the space BT, is led through the duct 14 'to the ash box space 15 of the stove 4 so that when combustion is interrupted it can transfer heat to the fresh and recirculated air passing through the furnace space 5 and flue 2 and otherwise acts as combustion air.

In order to prevent the build-up of overpressure in the duct 14 ', if the flue gas or suction fan 16 fails or if the passage through the flue duct 2 is disturbed, the duct 14' can be provided with a separate outlet 20, which is kept closed during normal operation by a balance damper 21 or the like.

Incidentally, with respect to the embodiment of Figure 4, the functional structure corresponds to the embodiment of Figure 1. The reference numerals in Fig. 4 thus denote details having a similar function to the details with the same reference numerals in Fig. 1.

Both embodiments relate to the fact that the number and location of the channels as well as the inlets and outlets can be varied. This also applies to the number of rooms and rooms in these.

5,59864

In both of the embodiments shown, the duct 17 can also be connected to a heat accumulator. During periods when heating is in progress and the amount of heat produced then exceeds the prevailing need, a damper or the like can be passed through the heat accumulator by reversing the intake and heated amount of air before allowing it to flow into spaces V and S.

• In a heat accumulator, which is best made up of a tank with partitions extending the airway and filled with stone, crushed stone or the like, the air releases heat that is stored in the filling.

When more heat is required in a building when the heating is not running, the fan can be used to force the air to circulate heat through the ice and take the heat and transfer it to the rooms.

The heat accumulator may be equipped with direct-acting charging devices, which are electrical heating elements or the like, which are allowed to heat the accumulator when no air flows through it. A radiator can also be arranged in the duct leading to the accumulator, which heats the air before it enters the accumulator. A precondition for such additional heating devices to charge the accumulator to be justified is that energy is available at a low price, for example at a lower price for night electricity.

The invention is, of course, not limited to what is described and shown in the drawing, but can be modified in many ways within the scope of the following claims.

Claims (6)

An apparatus for providing air exchange and heating of buildings, preferably residential buildings, comprising means for heat exchange between evacuation air and supply air, and an air heater provided with flue gas duct and duct for supply of combustion air, supply air combustion air and supply air comprises the partition between the flue gas duct from the heating system (4), and a space adjacent to this duct, through the supply air (3), and (11, 14, 14 '), whereby, when heat is exchanged, heat exchange takes place between the flue gases and the supplied air, while otherwise heat exchange takes place between the evacuation air flowing through the flue gas ducts and the supply air. 2. Device according to claim 1, characterized in that the heating system (4) comprises a separate fireplace space (5) separate and connected to the space (3) connected with the supply air (3) and the heating chamber (7) communicating with the building (V, S). , and that heat transfer to said chamber throughflowing air takes place partly when firing takes place and partly from evacuation air passing from the combustion space. Device according to Claim 1 or 2, characterized in that the through-space (3) arranged for supply air communicates with a passage space (8) or similar for circulating air from the interior of the housing provided by the flue gas duct (2).