WO2020235984A1 - High-efficiency heat exchanger - Google Patents

High-efficiency heat exchanger Download PDF

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Publication number
WO2020235984A1
WO2020235984A1 PCT/MX2019/000060 MX2019000060W WO2020235984A1 WO 2020235984 A1 WO2020235984 A1 WO 2020235984A1 MX 2019000060 W MX2019000060 W MX 2019000060W WO 2020235984 A1 WO2020235984 A1 WO 2020235984A1
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WO
WIPO (PCT)
Prior art keywords
ducts
heat exchanger
flange
efficiency heat
returns
Prior art date
Application number
PCT/MX2019/000060
Other languages
Spanish (es)
French (fr)
Inventor
Francisco Alvarado Barrientos
Original Assignee
Francisco Alvarado Barrientos
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Francisco Alvarado Barrientos filed Critical Francisco Alvarado Barrientos
Priority to PCT/MX2019/000060 priority Critical patent/WO2020235984A1/en
Publication of WO2020235984A1 publication Critical patent/WO2020235984A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/06—Portable or mobile, e.g. collapsible
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00

Definitions

  • the present invention consists of a high efficiency heat exchanger, to be applied in storage water heaters and rapid recovery of vertical operation, for residential and commercial use, which achieves the condensation of the water vapor that occurs in combustion. and it can be detachable.
  • the main object of the present invention is to provide a simplified and efficient heat exchanger, which can be removable and achieves the condensation of the water vapors that the combustion gases contain, with which high thermal efficiency and low cost water heaters can be manufactured.
  • a further object of the present invention is to provide a heat exchanger that, because it is removable, facilitates maintenance of the heat exchanger and the interior of the water heater tank during the useful life of both.
  • a simplified heat exchanger for high thermal efficiency and vertical operation water heaters, which can be removable and requires an electro-mechanical fan to force the combustion gases to flow inside the heat exchanger, which is made up of An elliptical-shaped flange and the combustion chamber and at least two ducts are welded to the flange to recover the heat of the combustion gases, therefore, the complete heat exchanger is welded to the flange, with which the condensation of the water vapor that is generated in the combustion is reached;
  • the heat exchanger is preferably fixed with screws by means of the elliptical flange and operates in a horizontal position, at the lower end and inside the tank of the water heater.
  • Figure 1 shows a side view of a water heater for residential use and vertical operation, inside which the present heat exchanger can be seen.
  • Figure 2 shows a side view of the heat exchanger, including the flange to which the ducts and the combustion chamber are welded.
  • Figure 3 shows as an example the section of a duct for combustion gases, which is part of the present heat exchanger.
  • Figure 4 shows the internal side of a wall of the gas duct and the spacers that form the returns and the direction in which the combustion gases flow can be seen.
  • Figure 5 shows an optional section that the ducts for combustion gases of the present heat exchanger may have.
  • Figure 6 shows one more alternative to manufacture the flue gas ducts of the present heat exchanger.
  • Figure 1 shows a schematic side view of the tank of a water heater 1 for residential use, operating vertically, and the present heat exchanger 2 is seen inside it in a horizontal position.
  • Figure 2 shows a side view of the complete heat exchanger 2, including a flange
  • combustion chamber 4 with a cylindrical shape and, as an example, a duct 5 with a preferably rectangular shape is seen, which recover the heat from the combustion gases.
  • the combustion chamber 4 with a cylindrical shape and, as an example, a duct 5 with a preferably rectangular shape is seen, which recover the heat from the combustion gases.
  • the heat exchanger 2 can preferably be removable and where appropriate, the flange 3 is fixed with screws in the lower part of the heater tank 1; optionally, flange 3 can be fixed to the bottom of
  • the present heat exchanger 2 which shows at least one duct 5 to recover the residual heat from the combustion gases, is not limiting, because the heat exchanger 2 can be made up of at least two ducts 5, or it can be made up of a plurality of ducts 5.
  • the present heat exchanger 2 should preferably operate in a horizontal position with respect to its length as shown in figure 1 and with respect to the width of the ducts 5, these are vertically aligned and parallel to each other, with a separation of at least 8 mm between the ducts 5 through which the water flows vertically and the convective currents are formed when the water that flows through the passage area between the pipes is heated.
  • the combustion gases are required to be driven by an electro-mechanical fan, to force them to flow at high speed inside the ducts 5, which is a forced draft;
  • An electro-mechanical fan can also be arranged to suck in the cold combustion gases, which is an induced draft.
  • Figure 3 individually shows the section of a duct 5 with a preferably rectangular shape, which has an inlet 7 through which the hot combustion gases flow, which can have a cylindrical, elliptical, or rectangular shape and in the lower part of the Duct 5 has an outlet 8 through which cold gases and condensate escape, which can also have a cylindrical, elliptical, or rectangular shape;
  • the duct 5 does not require baffles, baffles, or fins in its interior and the two walls 6 that constitute the duct 5, only have the surface of the sheets that constitute them;
  • the ducts 5 can be preferably formed by means of punching into two equal halves, which are arranged opposite each other with the edges of both halves making contact and welding is applied to said edges, either by projection, with electric arc or with laser beams and thus a duct 5 is formed with an interior separation of at least 3 mm between the two walls 6 through which the combustion gases flow; optionally the ducts 5 can be formed in a single piece by means of the hydroforming technique; the
  • the preferred dimensions of the ducts 5 can be for example 150 mm wide, 5 mm internal separation between the two walls 6 and the preferred length can be about 350 mm, but the combustion gases can be forced to flow through a much greater distance inside the ducts 5 of the example, which is preferably achieved by forming returns inside the ducts 5, the four can be three, by means of two separators 9 and thus the combustion gases flow through a distance of about 1,050 mm before exiting the ducts 5;
  • the dimensions mentioned as an example may vary totally depending on the specific requirements of each design of the heat exchanger 2.
  • the returns inside the ducts 5 with preferably rectangular section, although preferred, are not limiting, because if the ducts 5 have a considerable length, the combustion gases can flow from the inlet 7 directly to the outlet 8, flowing without return through the entire width of the ducts
  • Figure 4 shows the internal side of a wall 6 of the duct 5 and two spacers 9 are seen as an example, which form three returns inside the duct 5, as described in the example of figure 3.
  • the arrows 10 that indicate the direction in which the combustion gases flow horizontally and in each return they descend vertically to exit through the lower part of the duct 5, therefore, the combustion gases actually flow counter-flow with respect to the water that flows upward out of the ducts 5 and thus the condensation is achieved of the water vapors that are generated in the combustion when making contact with the cold water that enters through the lower part of the heater tank 1,
  • the two separators 9 shown as an example are not limiting, because the number of separators 9 it depends on the amount of returns that are required inside the ducts 5, because the length of the ducts 5 has to be defined according to the diameter of the heater 1 tank; For example, if the heater tank 1 has a small diameter, then the ducts 5 will have a small length, since these are arranged in a horizontal position inside the heater tank 1 which works
  • the spacers 9 can be formed in the walls 6 at the same time that the walls 6 are shaped, either by means of punching, or by the hydroforming technique;
  • the separators 9 can be manufactured with strips of foil, which are bent longitudinally 90 ° to make it in the shape of "L" and one of the sides is fixed with projection welding points on the side.
  • the separators 9 not only form the returns, they also fulfill the additional function of providing structural resistance in the ducts 5, which are rectangular in shape, so that they resist the external pressure exerted by the water from the heater 1 on the two walls 6 of the ducts 5;
  • the spacers 9 can be manufactured with wire, which must have the appropriate diameter to maintain the desired separation between the two walls 6 of the ducts 5.
  • Figure 5 shows another shape of the section that the ducts 5 can have, because the rectangular section of the ducts 5, although it is preferred, is not limiting, since the ducts 5 can be manufactured by punching, or by hydroforming with the elliptical section, or they can be manufactured with the cylindrical section equal to the tubes; With the present two sections of the ducts 5, Sos returns and the spacers 9 are formed in one wall 6 or in the two walls 6 with the same process of forming the walls 6 of the ducts 5, as already described.
  • Figure 6 shows one more alternative to form the ducts 5, which can be manufactured with tubes, whose preferred diameter is 1 ", but tubes of any other diameter can be used; in the ducts 5 that are manufactured with tubes, the retarnos are formed with Sos bends of the tubes, for example, to have a duct 5 in which the combustion gases flow from inlet 7 to outlet 8 for a distance of 1050 mm, 3 bends can be formed, which is equal to three returns and the present duct 5 reaches an approximate length of 350 mm, but the distance in which the combustion gases flow is 1,050 mm before reaching outlet 8 of the present duct
  • a storage and vertical operation water heater .1 with a capacity of 190 lts (50 gallons) is provided, in which the present heat exchanger 2 is arranged in the removable version and is fixed with a flange 3 elliptically in the lower part of the water heater 1 in a horizontal position according to figure 1, using 10 screws.
  • the heat exchanger 2 has a cylindrical combustion chamber 4 with a diameter of 130 mm, the which is located in the upper part of flange 3 and has three ducts 5 with rectangular section, which are located in the lower part of flange 3; It has a distributor of hot gases that flow through the inlet 7 of the ducts 5, which have a width of 150 mm and the internal separation between the two walls 6 is 5 mm; the length of the ducts 5 is 350 mm and they have 3 returns by means of two separators 9 manufactured with sheet, therefore, the combustion gases flow for a distance of 1050 mm inside the ducts 5, which have a collector of cold gases that flow out of the exchanger 2 through the outlet 8 of the ducts 5 and through a hole in the lower part of the flange 3.
  • the power of the burner is 52,741 kj / h (50,000 btu / h) based on the higher calorific value of the fuel gas and the combustion gases leave the ducts 5 with a temperature of 30 ° C and cold water enters with a temperature of 20 ° C at the bottom of the tank of heater 1.
  • This Heat Exchanger can be applied in vertical and horizontal operation, high thermal efficiency, storage and fast recovery water heaters and can be applied in any type of water heater of different dimensions and capacities, for residential use and commercial

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Details Of Fluid Heaters (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

The invention relates to a heat exchanger that operates with forced air intake or induced air intake, which is disposed horizontally inside the bottom end of a water heater, as shown in figure 1. The heat exchanger is attached by means of an elliptical flange and screws or the flange can be welded to the tank of the vertically operating water heater, and it achieves high thermal efficiency at a low cost because the steam is condensed. The heat exchanger is formed by the elliptical flange, which has a combustion chamber welded to its upper part and at least two ducts, preferably having a rectangular cross-section, welded to the lower part, the ducts having an internal separation between the two walls of at least 3 mm, through which the combustion gases flow. In addition, the ducts can be produced with an elliptical or cylindrical section and can even be produced only with tubes and bends in the tubes.

Description

INTERCAMBIADOR DE CALOR DE ALTA EFICIENCIA HIGH EFFICIENCY HEAT EXCHANGER
CAMPO DE LA INVENCIÓN FIELD OF THE INVENTION
La presente invención consiste en un intercambiador de calor de alta eficiencia, para aplicarse en calentadores de agua de almacenamiento y de rápida recuperación de funcionamiento vertical, para uso residencial y comercial, el cual alcanza la condensación del vapor de agua que se produce en la combustión y puede ser desmontable. The present invention consists of a high efficiency heat exchanger, to be applied in storage water heaters and rapid recovery of vertical operation, for residential and commercial use, which achieves the condensation of the water vapor that occurs in combustion. and it can be detachable.
ANTECEDENTES DE LA INVENCIÓN BACKGROUND OF THE INVENTION
En la actualidad los calentadores de agua de almacenamiento, de rápida recuperación y de funcionamiento vertical, como se fabrican normalmente, emiten los gases de combustión a muy altas temperaturas, de hasta 250° C y por ello no son eficientes en el aprovechamiento del calor que contienen los gases de combustión; además, los calentadores de agua que sí alcanzan una alta eficiencia térmica en la actualidad, normalmente tienen un aito costo de fabricación, lo cual es ocasionado por las técnicas que se aplican actualmente en los intercambiadores de calor que se utilizan en dichos calentadores de agua; dichas técnicas que se aplican en la actualidad, generalmente son como io descrito en las siguientes patentes: La patente US1935919, La patente US4380215, la patente US6354248, la patente EP1475579 y la patente EP2476988. Lo descrito en las patentes ya mencionadas, representa el estado de la técnica que más se utiliza actualmente en los calentadores de agua de almacenamiento y de rápida recuperación; al aplicar dichas técnicas, generalmente se dispone al menos un tubo de humo en el interior del tanque del calentador de agua, por el cual fluyen los gases de combustión y en el interior de los tubos de humo, se utilizan por ejemplo, bailes, deflectores, aletas, pero dichas técnicas ya son obsoletas, por ello en la actualidad se tienen muy altos costos de fabricación en los calentadores de agua de alta eficiencia térmica. Con la finalidad de suprimir los inconvenientes ya mencionados, el principal objeto de la presente invención, es el de proporcionar un intercambiador de calor simplificado y eficiente, que puede ser desmontable y alcanza la condensación de los vapores de agua que contienen los gases de combustión, con el cual se pueden fabricar calentadores de agua de alta eficiencia térmica y de bajo costo. Currently, storage water heaters, with rapid recovery and vertical operation, as they are normally manufactured, emit combustion gases at very high temperatures, up to 250 ° C and therefore are not efficient in the use of the heat that they contain the combustion gases; In addition, the water heaters that do achieve high thermal efficiency today, normally have a low manufacturing cost, which is caused by the techniques that are currently applied in the heat exchangers that are used in said water heaters; Said techniques that are currently applied are generally as described in the following patents: US1935919 patent, US4380215 patent, US6354248 patent, EP1475579 patent and EP2476988 patent. What is described in the aforementioned patents represents the state of the art that is currently most used in storage and rapid recovery water heaters; When applying these techniques, generally at least one smoke tube is arranged inside the tank of the water heater, through which the combustion gases flow and inside the smoke tubes, for example, dances, baffles are used , fins, but these techniques are already obsolete, for this reason there are currently very high manufacturing costs in high thermal efficiency water heaters. In order to eliminate the aforementioned drawbacks, the main object of the present invention is to provide a simplified and efficient heat exchanger, which can be removable and achieves the condensation of the water vapors that the combustion gases contain, with which high thermal efficiency and low cost water heaters can be manufactured.
Un objeto más de la presente invención, es el de proporcionar un intercambiador de calor que, por ser desmontable, facilita realizar el mantenimiento al intercambiador de calor y al interior del tanque del calentador de agua durante la vida útil de ambos. A further object of the present invention is to provide a heat exchanger that, because it is removable, facilitates maintenance of the heat exchanger and the interior of the water heater tank during the useful life of both.
Objetos adicionales se harán evidentes a la lectura de la descripción y las reivindicaciones de la presente invención. Additional objects will become apparent on reading the description and claims of the present invention.
SUMARIO DE LA INVENCIÓN SUMMARY OF THE INVENTION
Un intercambiador de calor simplificado, para calentadores de agua de alta eficiencia térmica y de funcionamiento vertical, que puede ser desmontable y requiere un ventilador electro mecánico para forzar los gases de combustión a fluir en el interior del intercambiador de calor, el cual está constituido por una brida de forma elíptica y en la brida se suelda la cámara de combustión y al menos dos ductos para recuperar el calor de los gases de combustión, por lo tanto, en la brida queda fijado con soldadura el intercambiador de calor completo, con el cual se alcanza la condensación del vapor de agua que se genera en la combustión; el intercambiador de calor es fijado preferentemente con tornillos por medio de la brida elíptica y funciona en posición horizontal, en el extremo inferior y dentro del tanque del calentador de agua. A simplified heat exchanger, for high thermal efficiency and vertical operation water heaters, which can be removable and requires an electro-mechanical fan to force the combustion gases to flow inside the heat exchanger, which is made up of An elliptical-shaped flange and the combustion chamber and at least two ducts are welded to the flange to recover the heat of the combustion gases, therefore, the complete heat exchanger is welded to the flange, with which the condensation of the water vapor that is generated in the combustion is reached; The heat exchanger is preferably fixed with screws by means of the elliptical flange and operates in a horizontal position, at the lower end and inside the tank of the water heater.
BREVE DESCRIPCION DE LAS FIGURAS BRIEF DESCRIPTION OF THE FIGURES
La figura 1 muestra una vista lateral de un calentador de agua para uso residencial y de funcionamiento vertical, en cuyo interior se aprecia el presente intercambiador de calor. La figura 2 muestra una vista lateral del intercambiador de calor, que incluye la brida en la que están fijados con soldadura los ductos y la cámara de combustión. Figure 1 shows a side view of a water heater for residential use and vertical operation, inside which the present heat exchanger can be seen. Figure 2 shows a side view of the heat exchanger, including the flange to which the ducts and the combustion chamber are welded.
La figura 3 muestra como ejemplo la sección de un ducto para gases de combustión, el cual forma parte del presente intercambiador de calor. La figura 4 muestra el lado interno de una pared del ducto de gases y se aprecian los separadores que forman los retornos y la dirección en que fluyen los gases de combustión. Figure 3 shows as an example the section of a duct for combustion gases, which is part of the present heat exchanger. Figure 4 shows the internal side of a wall of the gas duct and the spacers that form the returns and the direction in which the combustion gases flow can be seen.
La figura 5 muestra una sección opcional que pueden tener los ductos para gases de combustión, del presente intercambiador de calor. Figure 5 shows an optional section that the ducts for combustion gases of the present heat exchanger may have.
La figura 6 muestra una alternativa más para fabricar los ductos para gases de combustión, del presente intercambiador de calor. Figure 6 shows one more alternative to manufacture the flue gas ducts of the present heat exchanger.
DESCRIPCIÓN DETALLADA DE LA INVENCIÓN DETAILED DESCRIPTION OF THE INVENTION
La presente descripción se hace con fines ilustrativos, no limitativos y se hace referencia a las figuras y a los signos numéricos que se acompañan. La figura 1 muestra una vista lateral esquemática del tanque de un calentador de agua 1 para uso residencial, de funcionamiento vertical y se aprecia en su interior el presente intercambiador de calor 2 en posición horizontal. The present description is made for illustrative purposes, not limiting, and reference is made to the figures and the accompanying numerical signs. Figure 1 shows a schematic side view of the tank of a water heater 1 for residential use, operating vertically, and the present heat exchanger 2 is seen inside it in a horizontal position.
La figura 2 muestra una vista lateral del intercambiador de calor 2 completo, que incluye una bridaFigure 2 shows a side view of the complete heat exchanger 2, including a flange
3 con la forma preferentemente elíptica, una cámara de combustión 4 con la forma cilindrica y se aprecia como ejemplo un ducto 5 que tiene la forma preferentemente rectangular, los cuales recuperan el calor de los gases de combustión. Como se puede apreciar, la cámara de combustión3 with a preferably elliptical shape, a combustion chamber 4 with a cylindrical shape and, as an example, a duct 5 with a preferably rectangular shape is seen, which recover the heat from the combustion gases. As you can see, the combustion chamber
4 se posiciona preferentemente en la parte superior de la brida 3 y los ductos 5 se posicionan preferentemente en la parte inferior de la brida 3, esta posición es la preferida para que ia parte inferior de los ductos 5 esté en contacto con el agua fría que entra en la parte inferior del tanque del calentador 1 y así se produce la condensación del vapor de agua que se genera en la combustión; la posición ya descrita de la cámara 4 y los ductos 5 en la brida elíptica 3, aunque es ia preferida, no es limitativa, porque se puede cambiar en el diseño la posición de la brida elíptica 3 y puede quedar girada a 90° y así los ductos 5 quedarían a un lado de ia cámara 4, adicionalmente la brida elíptica 3 podría girarse a 180° sin cambiar diseño original y asi los ductos 5 quedarían en la parte superior de la brida 3, El intercambiador de calor 2 puede ser preferentemente desmontable y en su caso, la brida 3 es fijada con tornillos en la parte inferior del tanque del calentador 1; opcionalmente la brida 3 puede ser fijada en la parte inferior del tanque del calentador l, por medio de un cordón de soldadura en todo el contorno de la brida 3, lo cual mantiene a la brida 3 unida de forma permanente con el tanque del calentador 1; en cualquiera de las dos opciones con que sea fijada la brida 3 en el tanque del calentador 1, previamente se deben soldar en la brida 3, la cámara de combustión 4 y los ductos 5, por lo cual todo el intercambiador de calor 2, queda fijado con soldadura en la brida 3 y así se forma un solo cuerpo con la brida 3; además, para conectar la cámara de combustión 4 con los ductos 5, se dispone un distribuidor de gases de combustión, el cual por uno de los lados se fija con soldadura en el fondo piano de la cámara de combustión 4 y se dispone un orificio que comunica la cámara 4 con un iado del distribuidor de gases, en cuyo lado opuesto se hacen las aberturas en donde se suelda la entrada 7 de los ductos 5 por donde fluyen los gases calientes de combustión hada los ductos 5; en el lado inferior de los ductos 5, por donde salen los gases fríos de combustión y el condensado, se dispone un colector de gases, el cual recibe los gases fríos y el condensado por la salida 8 de los ductos 5 y conduce los gases fríos hacia afuera del intercambiador de calor atreves de un orificio que se dispone en la parte inferior de la brida 3; el presente colector de gases, se suelda a la parte inferior de los duelos 5 y a la parte inferior de la brida 3, igual a lo descrito para el distribuidor de gases, de tal forma que los gases calientes de combustión circulan por la entrada 7 de los ductos 5 y fluyen por dentro de los ductos 5 y finalmente salen los gases fríos por la salida inferior 8 de los ductos 5. El presente intercambiador de calor 2 que muestra ai menos un ducto 5 para recuperar el calor residual de los gases de combustión, no es limitativo, porque el intercambiador de calor 2 puede estar constituido por al menos dos ductos 5, o puede estar constituido por una pluralidad de ductos 5. El presente intercambiador de calor 2 debe funcionar preferentemente en posición horizontal respecto a su longitud como se aprecia en la figura 1 y respecto a lo ancho de los ductos 5, estos quedan alineados verticalmente y paralelos entre sí, con una separación de ai menos 8 mm entre los ductos 5 por donde fluye el agua verticalmente y se forman las corrientes convectivas al calentarse el agua que fiuye por el área de paso que queda entre los ductos 5, así se genera un alto coeficiente de transferencia de calor entre las dos paredes 6 de Sos ductos 5 y el agua fría que entra en la parte inferior del tanque del calentador 1. En el presente intercambiador de calor 2, se requiere que los gases de combustión sean impulsados por un ventilador electro mecánico, para forzarlos a fluir a alta velocidad en el interior de los ductos 5, lo cual es un tiro forzado; también se puede disponer un ventilador electro mecánico para que succione los gases fríos de combustión, lo cual es un tiro inducido. 4 is preferably positioned on top of flange 3 and ducts 5 are positioned preferably in the lower part of the flange 3, this position is the preferred one so that the lower part of the ducts 5 is in contact with the cold water that enters the lower part of the heater tank 1 and thus the condensation of the steam occurs of water that is generated in the combustion; the position already described of the chamber 4 and the ducts 5 in the elliptical flange 3, although it is preferred, is not limiting, because the position of the elliptical flange 3 can be changed in the design and it can be rotated by 90 ° and thus the ducts 5 would be on one side of the chamber 4, additionally the elliptical flange 3 could be rotated 180 ° without changing the original design and thus the ducts 5 would be in the upper part of the flange 3, the heat exchanger 2 can preferably be removable and where appropriate, the flange 3 is fixed with screws in the lower part of the heater tank 1; optionally, flange 3 can be fixed to the bottom of the heater tank l, by means of a weld bead around the flange 3, which keeps flange 3 permanently attached to the heater tank 1 ; In any of the two options with which flange 3 is fixed on heater tank 1, the combustion chamber 4 and ducts 5 must be previously welded on flange 3, so that the entire heat exchanger 2 remains fixed with welding on the flange 3 and thus a single body is formed with the flange 3; In addition, to connect the combustion chamber 4 with the ducts 5, a combustion gas distributor is arranged, which on one side is fixed with welding on the flat bottom of the combustion chamber 4 and a hole is arranged that The chamber 4 communicates with one side of the gas distributor, on the opposite side of which the openings are made where the inlet 7 of the ducts 5 is welded through where the hot combustion gases flow to the ducts 5; On the lower side of the ducts 5, where the cold combustion gases and the condensate exit, a gas collector is arranged, which receives the cold gases and the condensate through the outlet 8 of the ducts 5 and conducts the cold gases out of the heat exchanger through a hole that is arranged in the lower part of the flange 3; the present gas collector is welded to the lower part of the walls 5 and to the lower part of the flange 3, the same as described for the gas distributor, in such a way that the hot combustion gases circulate through the inlet 7 of ducts 5 and flow into ducts 5 and finally the cold gases exit through the lower outlet 8 of the ducts 5. The present heat exchanger 2 which shows at least one duct 5 to recover the residual heat from the combustion gases, is not limiting, because the heat exchanger 2 can be made up of at least two ducts 5, or it can be made up of a plurality of ducts 5. The present heat exchanger 2 should preferably operate in a horizontal position with respect to its length as shown in figure 1 and with respect to the width of the ducts 5, these are vertically aligned and parallel to each other, with a separation of at least 8 mm between the ducts 5 through which the water flows vertically and the convective currents are formed when the water that flows through the passage area between the pipes is heated. ducts 5, thus generating a high heat transfer coefficient between the two walls 6 of Sos ducts 5 and the cold water that enters the lower part of the heater tank 1. In the pre Se heat exchanger 2, the combustion gases are required to be driven by an electro-mechanical fan, to force them to flow at high speed inside the ducts 5, which is a forced draft; An electro-mechanical fan can also be arranged to suck in the cold combustion gases, which is an induced draft.
La figura 3 muestra individualmente la sección de un ducto 5 con la forma preferentemente rectangular, que cuenta con una entrada 7 por donde fluyen los gases calientes de combustión, la cual puede tener la forma cilindrica, elíptica, o rectangular y en la parte inferior del ducto 5 cuenta con una salida 8 por donde Huyen los gases fríos y el condensado, la cual también puede tener la forma cilindrica, elíptica, o rectangular; el ducto 5 no requiere bafles, deflectores, o aletas en su interior y las dos paredes 6 que constituyen el ducto 5, solo cuentan con la superficie que tienen las láminas que las constituyen; los ductos 5 pueden ser formados preferentemente por medio de troquelado en dos mitades iguales, las cuales se disponen contrapuestas entre sí con los bordes de ambas mitades haciendo contacto y en dichos bordes se aplica la soldadura, ya sea por proyección, con arco eléctrico o con rayos laser y así queda formado un ducto 5 con una separación interior de al menos 3 mm entre las dos paredes 6 por donde fluyen los gases de combustión; opcionalmente los ductos 5 pueden formarse de una sola pieza por medio de la técnica de hidroformado; la separación interior preferida entre las dos paredes 6 de los ductos 5 es de, entre 4 mm y 6 mm, no obstante, dicha separación interna entre ias dos paredes 6 puede ser mayor a 6 mm, lo cual depende de la longitud de los ductos 5 y del coeficiente de transferencia de calor deseado, porque cuanto más cerca estén ias dos paredes 6, el coeficiente de transferencia de calor es más alto y viceversa. Las dimensiones preferidas de los ductos 5 pueden ser por ejemplo, de 150 mm de ancho, 5 mm de separación interior entre ias dos paredes 6 y la longitud preferida puede ser de unos 350 mm, pero se pueden forzar los gases de combustión para fluir por una distancia mucho mayor en el interior de los ductos 5 del ejempio, lo cual se logra preferentemente formando retornos en el interior de los ductos 5, los cuates pueden ser tres, por medio de dos separadores 9 y así los gases de combustión fluyen por una distancia de unos 1,050 mm antes de salir de los ductos 5; ias dimensiones mencionadas como ejemplo, pueden variar totalmente según sean los requerimientos específicos en cada diseño del intercambiador de calor 2. Los retornos en el interior de los ductos 5 con la sección preferentemente rectangular, aunque se prefieren, no son limitativos, porque si los ductos 5 tienen una longitud considerable, los gases de combustión pueden fluir desde la entrada 7 en forma directa hasta ia salida 8 fluyendo sin retornos por todo lo ancho de los ductosFigure 3 individually shows the section of a duct 5 with a preferably rectangular shape, which has an inlet 7 through which the hot combustion gases flow, which can have a cylindrical, elliptical, or rectangular shape and in the lower part of the Duct 5 has an outlet 8 through which cold gases and condensate escape, which can also have a cylindrical, elliptical, or rectangular shape; the duct 5 does not require baffles, baffles, or fins in its interior and the two walls 6 that constitute the duct 5, only have the surface of the sheets that constitute them; The ducts 5 can be preferably formed by means of punching into two equal halves, which are arranged opposite each other with the edges of both halves making contact and welding is applied to said edges, either by projection, with electric arc or with laser beams and thus a duct 5 is formed with an interior separation of at least 3 mm between the two walls 6 through which the combustion gases flow; optionally the ducts 5 can be formed in a single piece by means of the hydroforming technique; the preferred interior separation between the two walls 6 of the ducts 5 is between 4 mm and 6 mm, however, said internal separation between the two walls 6 can be greater than 6 mm, which depends on the length of the ducts 5 and the desired heat transfer coefficient, because the closer the two walls 6 are, the higher the heat transfer coefficient and vice versa. The preferred dimensions of the ducts 5 can be for example 150 mm wide, 5 mm internal separation between the two walls 6 and the preferred length can be about 350 mm, but the combustion gases can be forced to flow through a much greater distance inside the ducts 5 of the example, which is preferably achieved by forming returns inside the ducts 5, the four can be three, by means of two separators 9 and thus the combustion gases flow through a distance of about 1,050 mm before exiting the ducts 5; The dimensions mentioned as an example may vary totally depending on the specific requirements of each design of the heat exchanger 2. The returns inside the ducts 5 with preferably rectangular section, although preferred, are not limiting, because if the ducts 5 have a considerable length, the combustion gases can flow from the inlet 7 directly to the outlet 8, flowing without return through the entire width of the ducts
5. 5.
La figura 4 muestra el lado interno de una pared 6 del ducto 5 y se aprecian como ejemplo dos separadores 9, los cuales forman tres retornos en el interior del ducto 5, tal y como se describe en el ejemplo de la figura 3, además se aprecian las flechas 10 que indican la dirección en la que fluyen los gases de combustión horizontalmente y en cada retorno descienden verticalmente para salir por la parte inferior del ducto 5, por lo cual, los gases de combustión realmente fluyen a contra flujo respecto a el agua que fluye hacia arriba por fuera de los ductos 5 y así se logra la condensación de los vapores de agua que se generan en la combustión al hacer contacto con el agua fría que entra por la parte inferior del tanque del calentador 1, Los dos separadores 9 que se muestran como ejemplo, no son limitativos, porque la cantidad de separadores 9 depende de la cantidad de retornos que se requieran en el interior de los ductos 5, porque la longitud de los ductos 5 tiene que definirse de acuerdo al diámetro del tanque del calentador 1; por ejemplo, si el tanque del calentador 1 tiene el diámetro pequeño, entonces los ductos 5 tendrán una longitud pequeña, ya que estos se disponen en posición horizontal en el interior del tanque del calentador 1 que funciona en posición vertical y por ello se requiere una mayor cantidad de separadores 9 para formar una mayor cantidad de retornos y así los gases de combustión fluyen por una distancia de al menos 900 mm en el interior de los ductos 5, lo cual se logra con una longitud pequeña de los ductos 5, pero con una mayor cantidad de retornos; de esta forma se puede recuperar todo el calor que contienen los gases de combustión, aun en los calentadores 1 con diámetro pequeño. Los separadores 9 pueden formarse en las paredes 6 al mismo tiempo que se les da forma a las paredes 6, ya sea por medio del troquelado, o por la técnica de hidroformado; además, los separadores 9 pueden fabricarse con tiras de lámina, a las cuales se les hace un doblez longitudinal de 90° para que quede con la forma de "L" y uno de los lados se fija con puntos de soldadura por proyección en el lado interno de una de las paredes 6 del duda 5 y el lado libre del separador 9 mantiene la separación entre ias dos paredes 6 del ducto 5; los separadores 9 no solo forman los retornos, también cumplen la función adicional de aportar resistencia estructural en los ductos 5 que tienen ia forma rectangular, para que éstos resistan la presión externa que ejerce el agua del caientador 1 en las dos paredes 6 de los ductos 5; opcionalmente los separadoras 9 pueden fabricarse con alambre, el cual debe tener el diámetro adecuado para mantener ia separación deseada entre las dos paredes 6 de los ductos 5. Figure 4 shows the internal side of a wall 6 of the duct 5 and two spacers 9 are seen as an example, which form three returns inside the duct 5, as described in the example of figure 3. appreciate the arrows 10 that indicate the direction in which the combustion gases flow horizontally and in each return they descend vertically to exit through the lower part of the duct 5, therefore, the combustion gases actually flow counter-flow with respect to the water that flows upward out of the ducts 5 and thus the condensation is achieved of the water vapors that are generated in the combustion when making contact with the cold water that enters through the lower part of the heater tank 1, The two separators 9 shown as an example, are not limiting, because the number of separators 9 it depends on the amount of returns that are required inside the ducts 5, because the length of the ducts 5 has to be defined according to the diameter of the heater 1 tank; For example, if the heater tank 1 has a small diameter, then the ducts 5 will have a small length, since these are arranged in a horizontal position inside the heater tank 1 which works in a vertical position and therefore requires a more spacers 9 to form a greater number of returns and thus the combustion gases flow for a distance of at least 900 mm inside the ducts 5, which is achieved with a small length of the ducts 5, but with a greater amount of returns; in this way, all the heat contained in the combustion gases can be recovered, even in small diameter heaters 1. The spacers 9 can be formed in the walls 6 at the same time that the walls 6 are shaped, either by means of punching, or by the hydroforming technique; In addition, the separators 9 can be manufactured with strips of foil, which are bent longitudinally 90 ° to make it in the shape of "L" and one of the sides is fixed with projection welding points on the side. internal of one of the walls 6 of the doubt 5 and the free side of the separator 9 maintains the separation between the two walls 6 of the duct 5; the separators 9 not only form the returns, they also fulfill the additional function of providing structural resistance in the ducts 5, which are rectangular in shape, so that they resist the external pressure exerted by the water from the heater 1 on the two walls 6 of the ducts 5; Optionally, the spacers 9 can be manufactured with wire, which must have the appropriate diameter to maintain the desired separation between the two walls 6 of the ducts 5.
La figura 5 muestra otra forma de la sección que pueden tener los ductos 5, porque la sección rectangular de los ductos 5, aunque es la preferida, no es limitativa, ya que los ducto 5 pueden fabricarse por troquelado, o por hidroformado con la sección elíptica, o pueden fabricarse con ia sección cilindrica igual a los tubos; con las presentes dos secciones de los ductos 5, Sos retornos y los separadores 9 se forman en una pared 6 o en las dos paredes 6 con el mismo procesa de formación de las paredes 6 de los ductos 5, como ya se describió. La figura 6 muestra una alternativa más para formar los ductos 5, los cuales se pueden fabricar con tubos, cuyo diámetro preferido es de 1", pero pueden utilizarse tubos de cualquier otro diámetro; en los ductos 5 que se fabrican con tubos, los retarnos se forman con Sos dobleces de los tubos, por ejemplo, para disponer de un ducto 5 en el que los gases de combustión fluyen desde la entrada 7 hasta la salida 8 por una distancia de 1050 mm, se pueden formar 3 dobleces, que es igual a tres retornos y el presente ducto 5 alcanza una longitud aproximada de 350 mm, pero ia distancia en la que fluyen los gases de combustión es de 1,050 mm antes de llegar a la salida 8 del presente ductoFigure 5 shows another shape of the section that the ducts 5 can have, because the rectangular section of the ducts 5, although it is preferred, is not limiting, since the ducts 5 can be manufactured by punching, or by hydroforming with the elliptical section, or they can be manufactured with the cylindrical section equal to the tubes; With the present two sections of the ducts 5, Sos returns and the spacers 9 are formed in one wall 6 or in the two walls 6 with the same process of forming the walls 6 of the ducts 5, as already described. Figure 6 shows one more alternative to form the ducts 5, which can be manufactured with tubes, whose preferred diameter is 1 ", but tubes of any other diameter can be used; in the ducts 5 that are manufactured with tubes, the retarnos are formed with Sos bends of the tubes, for example, to have a duct 5 in which the combustion gases flow from inlet 7 to outlet 8 for a distance of 1050 mm, 3 bends can be formed, which is equal to three returns and the present duct 5 reaches an approximate length of 350 mm, but the distance in which the combustion gases flow is 1,050 mm before reaching outlet 8 of the present duct
5. 5.
REALIZACIÓN PREFERIDA DE LA INVENCIÓN PREFERRED EMBODIMENT OF THE INVENTION
Se proporciona como ejemplo un calentador de agua .1 de almacenamiento y de funcionamiento vertical, con una capacidad de 190 lts (50 galones), en el cual se dispone el presente intercambiador de calor 2 en la versión desmontable y se fija con una brida 3 de forma elíptica en la parte inferior del calentador de agua 1 en posición horizontal conforme a la figura 1, utilizando para ello 10 tornillos, El intercambiador de calor 2 cuenta con una cámara de combustión 4 de forma cilindrica con el diámetro de 130 mm, la cual está ubicada en la parte superior de la brida 3 y cuenta con tres ductos 5 con la sección rectangular, los cuales están ubicados en la parte inferior de la brida 3; cuenta con un distribuidor de gases calientes que fluyen por la entrada 7 de los ductos 5, los cuaies tienen el ancho de 150 mm y la separación interna entre ias dos paredes 6 es de 5 mm; la longitud de los ductos 5 es de 350 mm y cuentan con 3 retornos por medio de dos separadores 9 fabricadas con lámina, por lo cual, los gases de combustión fluyen por una distancia de 1050 mm por el interior de los ductos 5, los cuales cuentan con un colector de gases fríos que fluyen hada afuera del intercambiador 2 por la salida 8 de los ductos 5 y a través de un orificio en la parte inferior de la brida 3. La potencia del quemador es de 52,741 kj/h (50,000 btu/h) en base al poder calorífico superior del gas combustible y los gases de combustión salen de los ductos 5 con una temperatura de 30° C y el agua fría entra con una temperatura de 20° C en la parte inferior del tanque del calentador 1. As an example, a storage and vertical operation water heater .1 with a capacity of 190 lts (50 gallons) is provided, in which the present heat exchanger 2 is arranged in the removable version and is fixed with a flange 3 elliptically in the lower part of the water heater 1 in a horizontal position according to figure 1, using 10 screws. The heat exchanger 2 has a cylindrical combustion chamber 4 with a diameter of 130 mm, the which is located in the upper part of flange 3 and has three ducts 5 with rectangular section, which are located in the lower part of flange 3; It has a distributor of hot gases that flow through the inlet 7 of the ducts 5, which have a width of 150 mm and the internal separation between the two walls 6 is 5 mm; the length of the ducts 5 is 350 mm and they have 3 returns by means of two separators 9 manufactured with sheet, therefore, the combustion gases flow for a distance of 1050 mm inside the ducts 5, which have a collector of cold gases that flow out of the exchanger 2 through the outlet 8 of the ducts 5 and through a hole in the lower part of the flange 3. The power of the burner is 52,741 kj / h (50,000 btu / h) based on the higher calorific value of the fuel gas and the combustion gases leave the ducts 5 with a temperature of 30 ° C and cold water enters with a temperature of 20 ° C at the bottom of the tank of heater 1.
El presente Intercambiador de calor se puede aplicar en calentadores de agua de funcionamiento vertical y horizontal, de alta eficiencia térmica, de almacenamiento y de rápida recuperación y se puede aplicar en cualquier tipo de calentador de agua de diferentes dimensiones y capacidades, para uso residencial y comercial This Heat Exchanger can be applied in vertical and horizontal operation, high thermal efficiency, storage and fast recovery water heaters and can be applied in any type of water heater of different dimensions and capacities, for residential use and commercial

Claims

REIVINDICACIONES
Habiendo descrito suficientemente mi invención, la considero una novedad, por lo tanto reclamo de mí exclusiva propiedad el contenido de las siguientes cláusulas. Having sufficiently described my invention, I consider it a novelty, therefore I claim the content of the following clauses as my exclusive property.
1 Intercambiados· de calor de alta eficiencia, que funciona con tiro forzado o tiro inducido, para utilizarse en calentadores de agua de almacenamiento y de rápida recuperación, de funcionamiento preferentemente vertical, para uso residencial y comercial, el cual requiere un ventilador electro mecánico para funcionar; caracterizado porque el intercambiador de calor (2) es preferentemente desmontable y alcanza la condensación del vapor de agua que se genera en la combustión, el cuai está constituido por una brida (3) con la forma preferentemente elíptica y una cámara de combustión 4 con la forma cilindrica la cual está ubicada preferentemente en la parte superior de la brida (3) y contiene al menos dos duelos (5), cuya sección tiene la forma preferentemente rectangular y se posicionan de preferencia en ia parte inferior de ia brida (3); además porque contiene un distribuidor de gases de combustión que comunica la cámara de combustión (4) con la entrada (7) por donde fluyen los gases calientes de combustión hacia los ductos (5) y contiene un colector para gases fríos y el condensado, el cual canaliza los gases fríos de los ductos (5) que provienen de la salida (8) y los expulsa a través de un orificio en ia parte inferior de la brida (3); además porque los ductos (5) se forman preferentemente por troquelado en dos mitades iguales, las cuales se disponen contrapuestas entre sí con los bordes de las dos mitades haciendo contacto y en dichos bordes se apiiea la soldadura, ya sea por proyección o por rayos laser y así se forma un ducto (5) con una separación interior de ai menos 3 mm entre las dos paredes (6) por donde fluyen los gases de combustión; además porque en el interior de los ductos (5) se forman al menos un separador (9) preferentemente por medio del troquelado al mismo tiempo que se forman las dos mitades del ducto (5), con el cual se forman preferentemente retornos, al menos dos en el interior del ductos (5) para que los gases de combustión puedan fluir por una distancia mayor que la longitud de los ductos (5); además porque los separadores (9) le aportan resistencia estructural a las paredes planas (6) de los ductos (5) con la sección preferentemente rectangular, para que resistan la presión externa que ejerce el agua que contiene el tanque del calentador (1); además porque el Intercambiador de calor (2) preferentemente desmontable, se fija con tornillos en el extremo inferior del tanque del calentador (1) y los ductos (5) quedan en posición horizontal respecto a su longitud; además porque los ductos (5) con la sección preferentemente rectangular, en cuanto a lo ancho quedan en posición vertical y paralelos entre sí con una separación de ai menos 8 mm entre los ductos (5) y por dicha separación fluye el agua verticalmente formando corrientes convectivas al calentarse por contacto con la parte externa de las paredes (6) de los ductos (5). 1 High efficiency heat exchanged, which works with forced draft or induced draft, for use in storage and rapid recovery water heaters, preferably vertical operation, for residential and commercial use, which requires an electro-mechanical fan to function; characterized in that the heat exchanger (2) is preferably removable and achieves the condensation of the water vapor that is generated in the combustion, which is constituted by a flange (3) with the preferably elliptical shape and a combustion chamber 4 with the cylindrical shape which is preferably located in the upper part of the flange (3) and contains at least two duels (5), the section of which is preferably rectangular in shape and preferably positioned in the lower part of the flange (3); also because it contains a combustion gas distributor that communicates the combustion chamber (4) with the inlet (7) through which the hot combustion gases flow towards the ducts (5) and contains a collector for cold gases and the condensate, the which channels the cold gases from the ducts (5) that come from the outlet (8) and expels them through a hole in the lower part of the flange (3); also because the ducts (5) are preferably formed by punching into two equal halves, which are arranged opposite each other with the edges of the two halves making contact and on said edges the welding is piled up, either by projection or by laser rays and thus a duct (5) is formed with an interior separation of at least 3 mm between the two walls (6) through which the combustion gases flow; also because inside the ducts (5) at least one separator (9) is formed preferably by means of punching at the same time that the two halves of the duct (5) are formed, with which returns are preferably formed, at least two inside the ducts (5) so that the combustion gases can flow for a distance greater than the length of the ducts (5); also because the spacers (9) provide structural resistance to the flat walls (6) of the ducts (5) with preferably rectangular section, so that they resist the external pressure exerted by the water contained in the heater tank (1); also because the heat exchanger (2), preferably removable, is fixed with screws at the lower end of the heater tank (1) and the ducts (5) remain in a horizontal position with respect to their length; also because the ducts (5) with the preferably rectangular section, in terms of width remain in a vertical position and parallel to each other with a separation of at least 8 mm between the ducts (5) and through said separation the water flows vertically forming currents convective when heated by contact with the external part of the walls (6) of the ducts (5).
2 Intercambiador de calor de alta eficiencia, de conformidad con ia reivindicación 1, caracterizado porque, alternativamente la brida elíptica (3) puede fijarse en ia parte inferior del tanque 1 por medio de un cordón de soldadura en todo el contorno de ia brida (3). 2 High efficiency heat exchanger, according to claim 1, characterized in that, alternatively, the elliptical flange (3) can be fixed in the lower part of tank 1 by means of a weld bead around the entire flange contour (3). ).
3 intercambiador de calor de aita eficiencia, de conformidad con la reivindicación 1, caracterizado porque la sección de los ductos (5) puede formarse por troquelado con ia sección elíptica, cuyos retornos se forman con el mismo troquelado. 3 high efficiency heat exchanger, according to claim 1, characterized in that the section of the ducts (5) can be formed by punching with the elliptical section, the returns of which are formed with the same punching.
4 intercambiador de calor de alta eficiencia, de conformidad con la reivindicación 1, caracterizado porque la sección de los ductos (5), puede formarse por troquelado con ia forma ciíndrica igual a los tubos, cuyos retornos se forman con el mismo troquelado. 4 high-efficiency heat exchanger, according to claim 1, characterized in that the section of the ducts (5) can be formed by punching with the same cylindrical shape as the tubes, whose returns are formed with the same punching.
5 intercambiador de calor de alta eficiencia, de conformidad con la reivindicación 1, caracterizado porque los ductos (5) pueden fabricarse de una sola pieza por medio de la técnica de bidroformado. 6 intercambiador de calor de alta eficiencia, de conformidad con la reivindicación 1, caracterizado porque los duelos (5) pueden fabricarse con tubos y los retornos se forman con los dobleces de los tubos, 7 Intercambiador de calor de alta eficiencia, de conformidad con ia reivindicación 1, caracterizado porque los retornos de los duelos (5) se pueden formar con los separadores (9) fabricados con tiras de lámina, a las cuaies se les hace un doblez longitudinal de 90° para que queden con forma de "L" y uno de los lados se fija en el interior de una de las dos paredes (6) con soldadura por proyección y el lado que queda libre mantiene 1a separación interna de ai menos 3 mm entre las dos paredes6 de los ductos (5). 5 high-efficiency heat exchanger, according to claim 1, characterized in that the ducts (5) can be manufactured in a single piece by means of the bidroforming technique. 6 high-efficiency heat exchanger, according to claim 1, characterized in that the duels (5) can be manufactured with tubes and the returns are formed with the bends of the tubes, 7 high-efficiency heat exchanger, in accordance with ia claim 1, characterized in that the returns of the duels (5) can be formed with the spacers (9) made with strips of foil, which are made a longitudinal fold of 90 ° so that they are shaped like an "L" and One of the sides is fixed inside one of the two walls (6) with projection welding and the side that remains free maintains an internal separation of at least 3 mm between the two walls6 of the ducts (5).
8 Intercambiador de calor de alta eficiencia, de conformidad con la reivindicación 1, caracterizado porque los separadores (9) para formar los retornos en los duelos (5), se pueden fabricar con alambre cuyo diámetro debe ser igual a ia separación Interna que se desea tener entre las dos paredes (6) de los ductos (5). 8 High efficiency heat exchanger, in accordance with claim 1, characterized in that the spacers (9) to form the returns in the duels (5), can be manufactured with wire whose diameter must be equal to the desired internal separation have between the two walls (6) of the ducts (5).
9 Intercambiador de calor de alta eficiencia, de conformidad con ia reivindicación 1, caracterizado porque, en los duelos (5) con la sección rectangular y con una longitud considerable, los gases de combustión pueden fluir desde ia entrada (7) en forma directa hasta la salida (8) fluyendo sin retornos por todo lo ancho de los duelos 5. 9 High efficiency heat exchanger, according to claim 1, characterized in that, in the duels (5) with rectangular section and with a considerable length, the combustion gases can flow from the inlet (7) directly to the exit (8) flowing without returns throughout the width of the duels 5.
10 Intercambiador de calor de alta eficiencia, de conformidad con ia reivindicación 1, caracterizado porque opcionaimeote, si la brida (3) se gira a 180°, los ductos (5) quedan en la parte superior de la brida (3) y si se cambia el diseño y la brida elíptica (3) queda en posición horizontal, los ductos 5 quedan a un lado de la cámara de combustión (4). 10 High efficiency heat exchanger, according to claim 1, characterized in that optionally, if the flange (3) is rotated 180 °, the ducts (5) remain in the upper part of the flange (3) and if they are The design changes and the elliptical flange (3) remains in a horizontal position, the ducts 5 remain on one side of the combustion chamber (4).
PCT/MX2019/000060 2019-05-20 2019-05-20 High-efficiency heat exchanger WO2020235984A1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011090368A2 (en) * 2010-01-25 2011-07-28 Francisco Alvarado Barrientos Heat recuperator
US20120222631A1 (en) * 2010-09-21 2012-09-06 Claude Lesage Gas-fired water heater with separable heat exchanger or detachably connected external water heater
US9151547B2 (en) * 2013-07-23 2015-10-06 Mikutay Corporation Heat exchanger utilizing chambers with sub-chambers having respective medium directing inserts coupled therein
RU183751U1 (en) * 2017-12-26 2018-10-02 Общество с ограниченной ответственностью "ИнвестГрупп" Heat exchanger

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011090368A2 (en) * 2010-01-25 2011-07-28 Francisco Alvarado Barrientos Heat recuperator
US20120222631A1 (en) * 2010-09-21 2012-09-06 Claude Lesage Gas-fired water heater with separable heat exchanger or detachably connected external water heater
US9151547B2 (en) * 2013-07-23 2015-10-06 Mikutay Corporation Heat exchanger utilizing chambers with sub-chambers having respective medium directing inserts coupled therein
RU183751U1 (en) * 2017-12-26 2018-10-02 Общество с ограниченной ответственностью "ИнвестГрупп" Heat exchanger

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