Stoves and furnaces – Tool having fluid fuel burner – Curling iron
Patent
1984-03-08
1985-09-17
Focarino, Margaret A.
Stoves and furnaces
Tool having fluid fuel burner
Curling iron
126416, 126419, 126437, F24J 302
Patent
active
045414130
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a pump and control unit intended for the heating of a water tank, and particularly but not exclusively of a swimming pool.
The prior-art solar heating installations generally comprise one or more solar collectors for converting the energy from solar radiation into heat; a hydraulic circuit which comprises an outward-flow pipe connecting the tank to the inlet of the collectors and a return-flow pipe connecting the outlet of the collectors to the tank; a pump which circulates the water from the tank through said hydraulic circuit; and a derivative-action control unit which is electrically connected to the motor and to two sensors mounted on the outward-flow pipe and on the return-flow pipe, respectively.
As a rule, the outward-flow sensor is located in the tank itself, and the return-flow sensor at the outlet of the collectors.
The installation of such a system involves, in the case of a swimming pool, mounting the sensors on the outward-and return-flow pipes, electrically connecting these sensors to the control unit and the latter to the pump, and calibrating the control unit. These operations are time-consuming and delicate and require considerable skill.
The present invention has as its object a monobloc pump and solar control unit to be furnished ready for use without any of these operations having to be performed.
To this end, in one embodiment the unit in accordance with the invention is characterized in that the pump, the control unit and the two sensors are integrated into a single case which is traversed by the outward- and return-flow pipes; that the electrical connections between the control unit, the sensors and the pump motor are prewired; and that said case is provided with a transparent opening facing the return-flow sensor through which the latter can be insolated.
Because of the minimum protection distance to be maintained around the swimming pool, the pump and control unit of the invention should be located near the collectors and thus may be regarded as being exposed to as much solar radiation as the collectors. Similarly, the temperature detected by the outward-flow sensor will be practically the same as that of the water in the pool. The unit of the invention thus is a true simulator which permits collector and pool temperatures to be detected that are close to the actual temperatures and derivative-action control to be effected as in a conventional installation.
Installation of the unit requires no skill and therefore can be carried out by the user himself. All he has to do is to hydraulically connect the pipe sections to the outward- and return-flow pipes and to run an electrical extension from the utility power system to the unit.
One embodiment of the invention will now be described in greater detail with reference to the accompanying drawing, wherein:
FIG. 1 is a diagrammatic representation of a heating installation for a swimming pool which uses a pump and control unit in accordance with the invention (showing an optional orientation apparatus in dotted outline);
FIG. 2 is a perspective view of said pump and control unit; and
FIG. 3 is a perspective view showing the layout of the various components of the unit in the interior of the case.
FIG. 4 is a modified embodiment of the control unit shown in FIG. 3 as though viewed along dotted section line 4--4 of FIG. 3. (illustrating an insulated parabolic mirror).
The description which follows relates to the heating of a swimming pool but obviously is fully applicable to the heating of any other water tank.
The installation comprises one or more solar energy collectors 10 which are hydraulically connected to a swimming pool 12 through an outward-flow pipe 14 starting at the bottom of the pool and by a return-flow pipe 16 connected to the outlet of the collectors and terminating at the surface of the pool.
The pool water is circulated through the circuit so formed by means of a pump 18 inserted in the outward-flow pipe 14. The cold water from the pool thus is drawn in by the pump 18 and piped to the collec
REFERENCES:
patent: 4061132 (1977-12-01), Ashton et al.
patent: 4063545 (1977-12-01), Hapgood
patent: 4210125 (1980-07-01), Fender
Calvet Gerard
Cannaux Guy
Compagnie Francaise de Raffinage
Focarino Margaret A.
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