Electric resistance heating devices – Heating devices – Convection space heater
Patent
1996-04-01
1998-09-01
Hoang, Tu B.
Electric resistance heating devices
Heating devices
Convection space heater
392354, 392355, 392359, 392371, F24D 1300
Patent
active
058022490
DESCRIPTION:
BRIEF SUMMARY
This is a continuation of PCT/EP94/02730, filed Aug. 16, 1994, entitled "Kabine mit einer Flachenheizung" ("Cabin with a Radiant Heating System"), now published as WO 95/05142, on Feb. 23, 1995.
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a cabin having a heating system integrated into one of its side walls and positioned between an inner wall layer and an outer wall layer in an ambient air channel having an inlet at the bottom and an outlet at the top.
2. Description of the Related Art
A cabin of this type is formed as a sauna cabin and known from DEA-32 23 447. The heating system is arranged at a location of a side wall in a recess which extends from the floor approximately up to the middle of the room and ends at the top through an inclined portion on the inner wall layer. It is recessed within the recess which is partly covered forwardly by screens. A fire barrier layer and an insulation are provided on the back side of the recess.
The conventional heating system of sauna cabins consists of an electrically heatable stove of metal which is preferably arranged in a corner of the cabin at some distance from the wall. This stove has several disadvantages. It occupies a relatively large space within the cabin. Furthermore, there is the risk of injuries upon contact with hot parts and of objects being burnt when being inadvertently placed thereon. Furthermore, the heat emission that takes place at one point is disadvantageous.
The risk of injuries is at least reduced in the case of the electric heater which is now arranged in a recess. Objects can no longer be placed thereon in the same manner, whereby this risk is also reduced.
However, there remains a disadvantageous heat emission, since heat is centrally emitted for the whole cabin from one place, resulting in warm and cold areas within the cabin.
Other types of stoves have been developed in view of the above-mentioned disadvantages. There are so-called sub-bench stoves on the market which have such a flat structure that they can be accommodated below a bench. This also saves the extra space needed for an upright stove.
In another constructional variant, the stove is long and small. It is placed near the floor in front of a wall and has a panelling as a protection against accidental contact. Space can thereby not be saved, since, instead of the approximately square area required for the stove, an equally large, but elongated area is now needed.
Finally, it is known that a sauna stove is arranged in the cabin ceiling. Any floor area for the stove can thus be dispensed with entirely; however, there is no thermal convection, which necessitates a centrifugal fan for ensuring the necessary circulation of air. Since the heat is here supplied from the top, this leads to a physiologically disadvantageous heat distribution.
The decisive disadvantage of all of the above-mentioned stove variants is their functional principle. Ambient air is greatly heated within a small area on the surface of highly heated tubular heating elements. The ambient air transports the heat, thermally or driven by a fan, convectively relatively irregularly to the inner wall surfaces, which are consequently heated at a slow pace and irregularly.
This leads to a considerable heat drop from the top to the bottom, which is objected to by many users as being unpleasant. The heating duration for the walls is relatively long. The preparation time causes considerable energy losses, since a considerable amount of energy is dissipated through the walls, the ceiling and the floor and due to the change of air during this time interval and has to be additionally supplied by the stove.
SUMMARY OF THE INVENTION
It is the object of the present invention to create a space-saving heating system for use in the above-mentioned cabin which ensures a uniform heat distribution within the cabin in a simple manner.
This object is achieved according to the invention in that the cabin has a large-surface radiant heating system built into the side walls and supplemente
REFERENCES:
patent: 2230095 (1941-01-01), Van Damm
patent: 3564201 (1971-02-01), Jones et al.
patent: 3691345 (1972-09-01), Needham et al.
patent: 4851646 (1989-07-01), Perala
patent: 4939344 (1990-07-01), Perala
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