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Machine translation
1. (WO1980002869) CIRCULATION PUMP FOR LIQUID AND/OR GAS MEDIUM
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1980/002869    International Application No.:    PCT/EP1980/000036
Publication Date: 24.12.1980 International Filing Date: 10.06.1980
IPC:
F03G 6/06 (2006.01), F04B 9/133 (2006.01), F24J 3/00 (2006.01), F25B 27/00 (2006.01)
Applicants:
Inventors:
Priority Data:
2923621 11.06.1979 DE
Title (EN) CIRCULATION PUMP FOR LIQUID AND/OR GAS MEDIUM
(FR) POMPE DE CIRCULATION POUR MILIEU LIQUIDE ET/OU GAZEUX
Abstract: front page image
(EN)The circulation pump (1) for a liquid and/or gas medium comprises a closed circuit wherein a heat exchanger (2) is provided; heat is supplied to the exchanger, from outside, for example solar energy; this exchanger returns that heat to another exchanger (3) through the circulation fluid; said second exchanger yields that heat, for example for heating purposes. The object is to improve the driving of the circulation pump, so that no foreign energy such as an electric current or a mechanical driving is required; further, an important pumped volume requires only a small consumption. The solution is embodied by a self driven circulation pump (1) using the temperature drop prevailing between inlet and exhaust, and the expansion thus generated; the circulation pump is composed of two pumps with differential pistons (7, 8) connected mechanically to each other by a self controlled device (12), the two piston pumps (7, 8) being operated alternatingly by the circulation fluid. Figure 2 shows the inside of a differential piston pump (7, 8). Another embodiment is shown in figure 3.
(FR)La pompe de circulation (1) pour milieu liquide et/ou gazeux comprend un circuit ferme dans lequel se trouve un echangeur de chaleur (2); de la chaleur est fournie a cet echangeur, de l"exterieur, par exemple de l"energie solaire; cet echangeur restitue cette chaleur a un autre echangeur (3) par l"intermediaire du fluide en circulation; ce deuxieme echangeur cede cette chaleur, par exemple dans un but de chauffage. Le but de l"invention est d"ameliorer l"entrainement de la pompe de circulation, de telle sorte qu"aucune energie etrangere, comme un courant electrique ou entrainement mecanique n"est necessaire; de plus, un volume pompe important ne necessite qu"une petite consommation propre. La solution consiste en ce que la pompe de circulation (1) s"entraine elle-meme en utilisant la chute de temperature regnante entre l"entree et la sortie, et la detente ainsi creee; la pompe de circulation est formee de deux pompes a pistons differentiels (7, 8) reliees mecaniquement entre elles par un dispositif d"autocommande (12) ces deux pompes a pistons (7, 8) sont actionnees en alternance par le fluide en circulation. La figure (2) montre l"interieur d"une pompe a pistons differentiels (7, 8). Une autre execution est presentee a la figure (3).
Designated States:
Publication Language: German (DE)
Filing Language: German (DE)