Abstract:
A high efficiency compact boiler is disclosed which includes a burner configured to introduce combustion gases into an interior region of the boiler, a heat exchange tube made of a length of finned tubing in the form of a helical coil positioned within the interior region of the boiler such that combustion gases from the burner can flow from a region inside the helical coil to a region outside the helical coil, and a floating baffle configured to redirect the flow of combustion gases around the finned tubing as it passes from the region inside the helical coil to the region outside the helical coil, the baffle being positioned proximal adjacent turns of the helical coil and having a coiled configuration corresponding substantially to the helical coil.
Abstract:
A heat exchanger plate (17) for a plate heat exchanger (12), comprising a first side, a second side and a centre point (P) through which an imaginary centre axis (A) extends in a direction perpendicular to a plane of the plate (17), wherein the plate (17) comprises a first port (30) for a first medium, and at least a second port (31) and a third port (32) for a second medium. The plate (17) further comprises a first sealing (35) arranged on the second side around the first port (30), a second sealing (36) arranged on the second side at a circumference of the plate (17), and a closed third sealing (37) arranged between the first and second sealings (35, 36) to form a first heat transfer area (38) and a second heat transfer area (39) separated from the first heat transfer area (38), wherein the second port (31) is arranged in the first heat transfer area (38) and the third port (32) is arranged in the second heat trans¬ fer area (39). The invention also relates to a plate heat exchanger comprising such plates and a device for heating comprising such a heat exchanger.
Abstract:
L'invention concerne un appareil de chauffage (1), comprenant un échangeur de chaleur à condensation (2), un brûleur à gaz (3), une manchette (40) d'amenée d'un mélange air/gaz au brûleur (3), des moyens (42) de mise en circulation dudit mélange dans l'appareil (1) et une conduite (430) d'introduction du gaz dans ladite manchette d'admission (40), l'échangeur de chaleur (2) comprenant un tube (21), monté à l'intérieur d'une enceinte (200) délimitée par une enveloppe (20), ce tube (21) étant parcouru par un fluide à réchauffer et exposé à des gaz chauds générés par ledit brûleur (3), ladite enveloppe (20) comprenant une manchette (205) d'évacuation des gaz brûlés. L'invention est remarquable en ce qu'au moins un tube de Venturi (70) est disposé dans ladite manchette d'admission (40), en aval de ladite conduite (430) d'introduction du gaz, la chambre de dépression (76) du Venturi (70) étant en communication de fluide avec le col (71), percé d'un trou (710), du Venturi et par le fait qu'au moins une pièce tubulaire de jonction (8) relie l'intérieur de ladite enceinte (200) avec ladite chambre de dépression (76), de façon à prélever une partie des gaz brûlés et à les incorporer au mélange air/gaz introduit dans le brûleur.
Abstract:
The present invention relates to a heat exchanger in which a coil is processed such that circularly wound pipes adjacent to each other are closely attached to each other, a flow path is formed such that a combustion product flows along an inner space having a cylindrical shape and defined by the wound coil, heat transfer efficiency with heated water flowing along the inside of the coil is maximized to simplify and miniaturize the structure of the heat exchanger, and a process for cleaning the inside of the heat exchanger is easily performed. For this purpose, a heat exchanger having a coil shape in which pipes are circularly wound is provided. In the heat exchanger having the coil shape, pipes adjacent to each other are closely attached to each other. Here, a combustion product does not flow between the pipes adjacent to each other. The combustion product flows only through a cylindrical inner space defined by the coil of the wound pipes.
Abstract:
Cette porte (1), qui est pourvue sur sa face interne d'un brûleur à gaz (2) et sur sa face externe d'un système (5) d'amenée d'un gaz combustible au brûleur, peut être engagée et fixée dans un encadrement (61) de paroi de l'appareil (AC); elle comporte une paire de tôles métalliques (10, 11) solidarisées l'une avec l'autre à leur périphérie (100), qui présentent des ouvertures d'entrée (102) et, respectivement, de sortie (103) du mélange gazeux, et qui sont mutuellement écartées, ce qui y ménage un espace interne recevant un plateau déflecteur (3) faisant office de bouclier thermique destiné à être léché de part et d'autre par le flux de mélange gazeux alimentant le brûleur. Cet agencement limite les déperditions de chaleur à travers la porte, permettant d'en maintenir froide la face externe, évitant ainsi également les risques de brûlures, tout en préchauffant le mélange gazeux. Appareils de chauffage.
Abstract:
The present invention relates to a plane type heat exchanger that has a simple structure and can be easily manufactured by substituting a rectangular plane type for a spiral cylindrical type of the structure of a heat exchange pipe according to the related art which is used for a heat exchanger using combustion gas that is heated by a burner and makes laminar flow. According to the present invention, the plane type heat exchanger having heat exchange pipes, through which heating water flows, and makes heat exchange by contacting with laminar-flow combustion gas, the plane type heat exchanger, includes: a plurality of heat exchange pipes that have a rectangular cross section with a larger width of a side, which contacts with the combustion gas, than the height, and are arranged at regular intervals in parallel with each other; inner plates where both ends of the heat exchange pipes are inserted to be fixed at regular intervals; and outer plates that are communicated with the heat exchange pipes through the inner plates and form spaces covering the outer surfaces of the inner plates.
Abstract:
A heat exchanger (1) comprises a casing (2, 13, 28, 33), within which there is present a first pipe wound in a spiral (25), in which a first fluid flows, the casing (2) being designed to receive a second fluid that is in heat-exchange relationship with the first fluid. The heat exchanger further comprises at least one second pipe wound in a spiral (26, 27), which connects, in parallel to the first pipe (25), two gaps (15, 36) formed in the casing (2, 13, 28, 33), the spiralled pipes (25,.26, 27) being arranged in a coaxial way and at a distance from one another, and having different sections of passage.
Abstract:
A boiler (1) has a combustion chamber (3) associated with a burner (4); a primary heat exchanger (5) for transferring heat from the fumes produced in the combustion chamber (3) to a heating fluid; a fan (7) for circulating the fumes; and a secondary condensation heat exchanger (8) for recovering latent condensation heat from the fumes; the secondary heat exchanger (8) has a pipe (23) wound to form a spiral conduit (24) extending along an axis (A) and in which the heating fluid circulates; and an enclosure (25) having a substantially cylindrical chamber (26) housing the pipe (23) and in which the fumes flow over the outside of the pipe (23).
Abstract:
Cet échangeur comprend au moins un faisceau (2) de tubes enroulé en hélice, dont la paroi, thermiquement conductrice, présente une section droite aplatie et ovale, dont le grand axe est perpendiculaire à celui (X-X') de l'hélice, tandis que la largeur de l'interstice séparant deux spires adjacentes est faible et constante, ce faisceau étant monté fixement à l'intérieur d'une enveloppe (1) munie d'une manchette (12) d'évacuation des gaz générés par un brûleur (6), des moyens étant prévus pour faire circuler de l'eau froide à l'intérieur de ce faisceau (2), cet échangeur étant ainsi agencé que les gaz chauds traversent radialement le faisceau à travers les interstices des spires; l'échangeur est remarquable en ce que, d'une part, l'enveloppe(1) est réalisée en matière plastique résistant à la chaleur et, d'autre part, des moyens (5; 3-30) sont prévus pour assurer une contention mécanique du faisceau en direction axiale, et à absorber les efforts de poussée résultant de la pression interne du fluide, en évitant qu'ils ne se transmettent à l'enveloppe (1). Echangeur à condensation, notamment à usage domestique, de poids et de coût réduits.