Rock heater for sauna
OwnerToivo I. Kolkkainventor
Life of this patent
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Abstract
An improved rock heater having a hollow housing provided with a dome-shaped, heat conductive top and means therewithin for creating combustion gases. Means of heat conductive material is provided adjacent to the top for retaining a pile of rocks to be heated on the top, said retaining means having a fluid passage in fluid communication with the housing so that rising combustion gases, after heating the top, will pass into and through the retaining means. Thus, the heat energy from the top and retaining means will heat the rocks. Flue means coupled with the retaining means directs the combustion gases away from the housing. A shield surrounds the housing.
Claims12
In a rock heater:
- a housing of heat-conductive material, said housing being provided with a top and having a chamber below the top in which combustion gases can be generated, said top having an upper extremity and sloping downwardly and outwardly from said upper extremity in substantially all directions;
- means having a fluid passage therethrough and disposed adjacent to the top for retaining a pile of rocks thereon;
- and a pipe placing said fluid passage in fluid communication with said housing for permitting combustion gases to flow out of the housing and into the fluid passage, the latter having a fluid outlet for the exhausting of gases therefrom.
A rock heater comprising:
- a housing of heat conductive material, said housing including a continuous sidewall, a bottom and a top, said top having an upper extremity and sloping downwardly from said upper extremity in substantially all directions;
- a rock retainer;
- means mounting said rock retainer on said housing above and spaced from said top, said rock retainer having a fluid passage therethrough;
- means placing said housing in fluid communication with said fluid passage;
- means in said housing near the bottom thereof for generating combustion gases therein;
- and fluid means in fluid communication with said fluid passage for permitting combustion gases to be exhausted therefrom.
In a rock heater:
- a housing of heat conductive material, said housing having a top and a chamber below the top in which hot gases can be generated, said top having an upper extremity and sloping downwardly and outwardly from said upper extremity in substantially all directions;
- a tubular rock retainer having a central rock-receiving hole therethrough and being in fluid communication with said housing to receive hot gases therefrom;
- means coupled with the housing for mounting the rock retainer in spaced relationship above said top, whereby rocks placed on said top through said central hole of the rock retainer will be retained in place on the top, at least the major portion of the outer periphery of the top being free of attached structure to permit water to gravitate from the top past said major portion;
- a shield surrounding the housing to intercept water gravitating from the top;
- and means coupled with the retainer for permitting hot gases to flow out of the same.
Dependencies are inferred from the claim text.