EP3877705A1 - Heat exchanger with gas discharge system - Google Patents

Heat exchanger with gas discharge system

Info

Publication number
EP3877705A1
EP3877705A1 EP20722695.2A EP20722695A EP3877705A1 EP 3877705 A1 EP3877705 A1 EP 3877705A1 EP 20722695 A EP20722695 A EP 20722695A EP 3877705 A1 EP3877705 A1 EP 3877705A1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
discharge opening
chamber
tube
opening
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
EP20722695.2A
Other languages
German (de)
French (fr)
Other versions
EP3877705B1 (en
Inventor
Yalcin OTER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Emas Makina Sanayi AS
Original Assignee
Emas Makina Sanayi AS
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 Emas Makina Sanayi AS filed Critical Emas Makina Sanayi AS
Publication of EP3877705A1 publication Critical patent/EP3877705A1/en
Application granted granted Critical
Publication of EP3877705B1 publication Critical patent/EP3877705B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • F28D21/0001—Recuperative heat exchangers
    • F28D21/0003—Recuperative heat exchangers the heat being recuperated from exhaust gases
    • F28D21/0005—Recuperative heat exchangers the heat being recuperated from exhaust gases for domestic or space-heating systems
    • F28D21/0007—Water 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
    • F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
    • F24H1/40—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water tube or tubes
    • F24H1/43—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water tube or tubes helically or spirally coiled
    • 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
    • F24H9/00—Details
    • F24H9/0005—Details for water heaters
    • F24H9/001—Guiding means
    • F24H9/0026—Guiding means in combustion gas channels
    • 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
    • F24H9/00—Details
    • F24H9/02—Casings; Cover lids; Ornamental panels
    • 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
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0024—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for combustion apparatus, e.g. for boilers

Definitions

  • the present invention relates to a heat exchanger which provides an exhaust gas discharge system which is more efficient than the heat exchangers in the state of the art.
  • Heat exchangers are used to transfer heat from one fluid to another. Heat exchangers can transfer heat from gas to liquid, liquid to gas, liquid to liquid or gas to gas. Heat exchangers are widely used in cooling, air conditioning, heating, power generation and chemical processes. In other words, the heat exchanger is the circuit element that provides heat transfer among two fluids - liquid or gas - with different temperatures without any physical contact therebetween (without mixing).
  • heat exchangers are divided into three types: Tubular heat exchangers, Plate type heat exchangers (Detachable type, Welded type, Semi-welded type, Soldered type), Special purpose heat exchangers (Plate Coil Heat Exchangers, Econocoil Heat Exchangers, Spiral Heat Exchangers). In the combi boilers, the heat exchangers carry out the process of transferring the heat of the burning gas to the liquid.
  • European patent document no. EP2984415B1 an application in the state of the art, discloses a heat exchanger system.
  • the gas burning in the center of the heat exchanger which has a cylindrical body, travels through the helical tubes and is discharged through an external discharge chamber located at the base of the body; and as the gas starts to move through the tubes, the tubes warm up and the liquid in the tubes warm up.
  • the gas passing through the tubes is collected in a separate discharge chamber and then discharged, but this increases the gas pressure value and also reduces the heat exchange efficiency as it slows down the discharge of the gas.
  • European patent document no. EP3485203 discloses a heat exchanger system.
  • the gas burning in the center of the heat exchanger which has a cylindrical body, travels through the helical tubes and is discharged from the body through a channel located at the base of the body; and as the gas starts to move through the tubes, the tubes warm up and the liquid in the tubes warm up.
  • the gas passing through the tubes is collected in a separate discharge chamber and then discharged, but this increases the gas pressure value and also reduces the heat exchange efficiency as it slows down the discharge of the gas.
  • the objective of the present invention is to provide a heat exchanger that enables the gases burning in the heat exchanger body to move with low pressure.
  • Another objective of the present invention is to provide a heat exchanger that achieves high efficiency within the entire thermal capacity range thanks to the circular gas flow that is generated.
  • a further objective of the present invention is to provide a heat exchanger which ensures that the fluids entering the system are directed to the condensation collection channel, and at the same time, the stability of the combustion efficiency of the burner is achieved in a sustainable manner.
  • Figure 1 is a perspective view of the heat exchanger.
  • Figure 2 is the exploded perspective view of the heat exchanger.
  • Figure 3 is the front perspective view of the body.
  • Figure 4 is a view of the A-A section of the heat exchanger.
  • FIG. 5 is a view of the gas flow in the A-A section of the heat exchanger.
  • the components in the figures are each given reference numbers as follows:
  • the heat exchanger (1) of the present invention essentially comprises
  • At least one body (2) which is in the form of a hollow cylinder consisting of two parts,
  • - at least one discharge opening (22) provided on the cylindrical surface of the body (2) to allow the gas exiting the burner to circulate around the tube (3), travel through the cylindrical surface of the body (2) and exit the body (2), - at least one second chamber (23) which has an inner space and is formed so as to cover the said discharge opening (22),
  • the heat exchanger (1) of the present invention comprises a body (2) which is in the form of a hollow cylinder consisting of two parts.
  • the body (2) is preferably manufactured from sheet metal material.
  • the body (2) is made of a heat insulating plastic material.
  • a tube (3) having a spiral structure is arranged inside the body (2).
  • the tube (3) is manufactured as a single piece and is twisted to form spirals.
  • the inlet and outlet parts of the tube (3) can be positioned such that they project from the body (2) or remain inside the body; and the fluid material entering the said tube (3) through the inlet part passes through the spiral structure of the tube (3) inside the body (2) and exits through the outlet part.
  • the flat surface of the body (2) having a cylindrical structure is open and there is provided a front cover (21) having a disc shape for covering the said opening.
  • a burner is placed on the said front cover (21) and the burner is positioned so that the burning part of the burner enters the body (2).
  • a discharge opening (22) is provided on the cylindrical surface of the body (2) to allow the gas exiting the burner to circulate around the tube (3), travel through the cylindrical surface of the body (2) and exit the body (2).
  • the gas leaving the burner passes through the layers of the tube which is spirally placed inside the body (2), reaches the inner wall of the body (2) and travels parallel to the inner wall of the cylindrical body (2), thereby reaching the discharge opening (22).
  • the gas discharged from the body (2) through the discharge opening (22) is collected in a second chamber (23) positioned so as to cover the discharge opening (22).
  • the second chamber (23) has a shape parallel to the cylindrical surface of the body (2); in other words, its wide surface is in the form of an arc extending parallel to the body (2). Thanks to its arc shape, the second chamber (22) allows the gas to move at low pressure.
  • the second chamber (23) is in the form of a rectangular prism.
  • a flue opening (25) is provided on the second chamber (23).
  • a plate (24) which partially covers the discharge opening (22) in order to prevent the liquid entering through the flue opening (25) from reaching the tube (3) and at the same time to facilitate the transport of the gas moving on the inner surface of the body (2) to the second chamber (23).
  • the plate (24) has an arc shape and is placed over the discharge opening (22) without completely closing the aperture of the discharge opening (22).
  • the plate (24) has a rectangular shape. The plate (24) prevents rainwater from entering into the body (2) through the flue opening (25).
  • the plate (24) when the plate (24) is placed on the discharge opening (22), two symmetrical spaces are formed on opposite sides of the plate (24); the said spaces may be arranged to be symmetrical to each other. Thanks to the said spaces, the gas in the body (2) is allowed to pass into the second chamber (23) in a balanced manner and the gases are enabled to be mixed in a balanced manner.
  • An insulating plate is placed on the flat surface of the cylindrical body (2). The said insulating plate prevents the heat generated by combustion of the burner from heating the flat surface of the body (2), i.e. the wall that cannot be cooled.
  • the heat exchanger (1) of the present invention enables the gases burning in the body (2) to move with low pressure.
  • the hot combustion gasses pass through the apertures of the tube (3) and transfer heat to the liquid passing through the tube (3).
  • the combustion gases which transfer their heat to the liquid within the tube (3), that is to say, which have low energy, are directed from the cylindrical inner surface of the body (2) to the second chamber (23).
  • a plate (24) which partially covers the discharge opening (22) on the second chamber (23), so that the combustion gases can enter the second chamber (23) through a laminar flow.
  • the plate (24) prevents the rainwater or condensate coming from the flue opening (25), i.e. chimney, from directly contacting the burner part where the combustion takes place.
  • the process of directing the combustion gases generated by the burner to the chimney at the flue opening (25) is enabled by the help of a manifold channel provided on the inner wall of the body (2).
  • a manifold channel provided on the inner wall of the body (2).
  • Manifold channel is a solution that allows to reduce the condensing heat exchanger depth as much as the size of the collection chamber.
  • the condensate liquid formed in the chimney and body (2) is directed to the condensate discharge channel provided in the body (2) by following the boundaries set by the manifold channels. This way, the heat exchanger (1) ensures that the fluids entering the body (2) are directed to the condensation collection channel and at the same time, the stability of the combustion efficiency of the burner is achieved in a sustainable manner.

Landscapes

  • 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)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

The present invention relates to a heat exchanger (1) for combi boilers characterized by at least one body (2) which is in the form of a hollow cylinder consisting of two parts, at least one tube (3) with a spiral structure arranged inside the body (2), at least one front cover (21) arranged so to cover the opening provided on the flat surface of the body (2), a burner arranged on the front cover (21), at least one discharge opening (22) provided on the cylindrical surface of the body (2) to allow the gas exiting the burner to circulate around the tube (3), travel through the cylindrical surface of the body (2) and exit the body (2), at least one second chamber (23) which has an inner space and is formed so as to cover the said discharge opening (22), at least one flue opening (25) provided on the second chamber (23), at least one plate (24) which partially covers the discharge opening (22) to prevent the condensed liquid or rainwater entering through the flue opening (25) from reaching the tube (3).

Description

HEAT EXCHANGER WITH GAS DISCHARGE SYSTEM
Field of the Invention
The present invention relates to a heat exchanger which provides an exhaust gas discharge system which is more efficient than the heat exchangers in the state of the art.
Background of the Invention
Heat exchangers are used to transfer heat from one fluid to another. Heat exchangers can transfer heat from gas to liquid, liquid to gas, liquid to liquid or gas to gas. Heat exchangers are widely used in cooling, air conditioning, heating, power generation and chemical processes. In other words, the heat exchanger is the circuit element that provides heat transfer among two fluids - liquid or gas - with different temperatures without any physical contact therebetween (without mixing). In the state of the art, heat exchangers are divided into three types: Tubular heat exchangers, Plate type heat exchangers (Detachable type, Welded type, Semi-welded type, Soldered type), Special purpose heat exchangers (Plate Coil Heat Exchangers, Econocoil Heat Exchangers, Spiral Heat Exchangers). In the combi boilers, the heat exchangers carry out the process of transferring the heat of the burning gas to the liquid.
European patent document no. EP2984415B1, an application in the state of the art, discloses a heat exchanger system. The gas burning in the center of the heat exchanger, which has a cylindrical body, travels through the helical tubes and is discharged through an external discharge chamber located at the base of the body; and as the gas starts to move through the tubes, the tubes warm up and the liquid in the tubes warm up. In the said patent document, the gas passing through the tubes is collected in a separate discharge chamber and then discharged, but this increases the gas pressure value and also reduces the heat exchange efficiency as it slows down the discharge of the gas.
European patent document no. EP3485203, an application in the state of the art, discloses a heat exchanger system. The gas burning in the center of the heat exchanger, which has a cylindrical body, travels through the helical tubes and is discharged from the body through a channel located at the base of the body; and as the gas starts to move through the tubes, the tubes warm up and the liquid in the tubes warm up. In the said patent document, the gas passing through the tubes is collected in a separate discharge chamber and then discharged, but this increases the gas pressure value and also reduces the heat exchange efficiency as it slows down the discharge of the gas.
Summary of the Invention
The objective of the present invention is to provide a heat exchanger that enables the gases burning in the heat exchanger body to move with low pressure.
Another objective of the present invention is to provide a heat exchanger that achieves high efficiency within the entire thermal capacity range thanks to the circular gas flow that is generated.
A further objective of the present invention is to provide a heat exchanger which ensures that the fluids entering the system are directed to the condensation collection channel, and at the same time, the stability of the combustion efficiency of the burner is achieved in a sustainable manner.
Description of the Figures
The heat exchanger system developed to fulfill the objectives of the present invention is illustrated in the accompanying figures, in which:
Figure 1 is a perspective view of the heat exchanger. Figure 2 is the exploded perspective view of the heat exchanger.
Figure 3 is the front perspective view of the body.
Figure 4 is a view of the A-A section of the heat exchanger.
Figure 5 is a view of the gas flow in the A-A section of the heat exchanger. The components in the figures are each given reference numbers as follows:
1. Heat exchanger
2. Body
21. Front cover
22. Discharge opening 23. Second chamber
24. Plate
25. Flue opening
3. Tube Detailed Description of the Invention
The heat exchanger (1) of the present invention essentially comprises
- at least one body (2) which is in the form of a hollow cylinder consisting of two parts,
- an ellipse shaped tube (3) with a spiral structure arranged inside the body (2), - at least one front cover (21) arranged so to cover the opening provided on the flat surface of the body (2),
- a burner arranged on the front cover (21),
- at least one discharge opening (22) provided on the cylindrical surface of the body (2) to allow the gas exiting the burner to circulate around the tube (3), travel through the cylindrical surface of the body (2) and exit the body (2), - at least one second chamber (23) which has an inner space and is formed so as to cover the said discharge opening (22),
- at least one flue opening (25) provided on the second chamber (23),
- at least one plate (24) which partially covers the discharge opening (22) to prevent the condensed liquid or rainwater entering through the flue opening
(25) from reaching the tube (3).
The heat exchanger (1) of the present invention comprises a body (2) which is in the form of a hollow cylinder consisting of two parts. The body (2) is preferably manufactured from sheet metal material. In a preferred embodiment of the invention, the body (2) is made of a heat insulating plastic material. A tube (3) having a spiral structure is arranged inside the body (2). The tube (3) is manufactured as a single piece and is twisted to form spirals. The inlet and outlet parts of the tube (3) can be positioned such that they project from the body (2) or remain inside the body; and the fluid material entering the said tube (3) through the inlet part passes through the spiral structure of the tube (3) inside the body (2) and exits through the outlet part. There is provided a separator between each layer of the spiral tube (3), so that the parts of the tube (3) placed inside the body (2) in a spiral manner do not contact each other. The flat surface of the body (2) having a cylindrical structure is open and there is provided a front cover (21) having a disc shape for covering the said opening. A burner is placed on the said front cover (21) and the burner is positioned so that the burning part of the burner enters the body (2). A discharge opening (22) is provided on the cylindrical surface of the body (2) to allow the gas exiting the burner to circulate around the tube (3), travel through the cylindrical surface of the body (2) and exit the body (2). Thus, thanks to the circular gas flow that is generated in the body (2), high efficiency is achieved within the entire thermal capacity range. In other words, the gas leaving the burner passes through the layers of the tube which is spirally placed inside the body (2), reaches the inner wall of the body (2) and travels parallel to the inner wall of the cylindrical body (2), thereby reaching the discharge opening (22). The gas discharged from the body (2) through the discharge opening (22) is collected in a second chamber (23) positioned so as to cover the discharge opening (22). In a preferred embodiment of the invention, the second chamber (23) has a shape parallel to the cylindrical surface of the body (2); in other words, its wide surface is in the form of an arc extending parallel to the body (2). Thanks to its arc shape, the second chamber (22) allows the gas to move at low pressure. In a preferred embodiment of the invention, the second chamber (23) is in the form of a rectangular prism. A flue opening (25) is provided on the second chamber (23). There is provided a plate (24) which partially covers the discharge opening (22) in order to prevent the liquid entering through the flue opening (25) from reaching the tube (3) and at the same time to facilitate the transport of the gas moving on the inner surface of the body (2) to the second chamber (23). In a preferred embodiment of the invention, the plate (24) has an arc shape and is placed over the discharge opening (22) without completely closing the aperture of the discharge opening (22). In a preferred embodiment of the invention, the plate (24) has a rectangular shape. The plate (24) prevents rainwater from entering into the body (2) through the flue opening (25). In a preferred embodiment of the invention, when the plate (24) is placed on the discharge opening (22), two symmetrical spaces are formed on opposite sides of the plate (24); the said spaces may be arranged to be symmetrical to each other. Thanks to the said spaces, the gas in the body (2) is allowed to pass into the second chamber (23) in a balanced manner and the gases are enabled to be mixed in a balanced manner. An insulating plate is placed on the flat surface of the cylindrical body (2). The said insulating plate prevents the heat generated by combustion of the burner from heating the flat surface of the body (2), i.e. the wall that cannot be cooled. The heat exchanger (1) of the present invention enables the gases burning in the body (2) to move with low pressure. In a preferred embodiment of the invention, there are protrusions on the cylindrical inner surface of the body (2) for directing the gas to the discharge opening (22), and the said protrusions allow the laminar flow of the gas as well as reducing the gas pressure. In a preferred embodiment of the invention, there are recesses on the cylindrical inner surface of the body (2) for directing the gas to the discharge opening (22), and the said recesses allow the laminar flow of the gas as well as reducing the gas pressure.
In the heat exchanger (1) of the present invention, after the combustion takes place within the burner, the hot combustion gasses pass through the apertures of the tube (3) and transfer heat to the liquid passing through the tube (3). The combustion gases, which transfer their heat to the liquid within the tube (3), that is to say, which have low energy, are directed from the cylindrical inner surface of the body (2) to the second chamber (23). There is provided a plate (24), which partially covers the discharge opening (22) on the second chamber (23), so that the combustion gases can enter the second chamber (23) through a laminar flow. At the same time, the plate (24) prevents the rainwater or condensate coming from the flue opening (25), i.e. chimney, from directly contacting the burner part where the combustion takes place.
In a preferred embodiment of the invention, the process of directing the combustion gases generated by the burner to the chimney at the flue opening (25) is enabled by the help of a manifold channel provided on the inner wall of the body (2). In a preferred embodiment of the invention, a plurality of manifold channels is arranged inside the body (2). Thanks to the manifold channels, there is no need for a separate collection chamber to direct the combustion gases to the chimney. Manifold channel is a solution that allows to reduce the condensing heat exchanger depth as much as the size of the collection chamber. The condensate liquid formed in the chimney and body (2) is directed to the condensate discharge channel provided in the body (2) by following the boundaries set by the manifold channels. This way, the heat exchanger (1) ensures that the fluids entering the body (2) are directed to the condensation collection channel and at the same time, the stability of the combustion efficiency of the burner is achieved in a sustainable manner.

Claims

1. A heat exchanger (1) for combi boilers comprising at least one body (2) which is in the form of a hollow cylinder consisting of two parts, at least one tube (3) with a spiral structure arranged inside the body (2), at least one front cover (21) arranged so to cover the opening provided on the flat surface of the body (2), a burner arranged on the front cover (21), characterized by
- at least one discharge opening (22) provided on the cylindrical surface of the body (2) to allow the gas exiting the burner to circulate around the tube (3), travel through the cylindrical surface of the body (2) and exit the body (2),
- at least one second chamber (23) which has an inner space and is formed so as to cover the said discharge opening (22),
- at least one flue opening (25) provided on the second chamber (23),
- at least one plate (24) which partially covers the discharge opening (22) to prevent the condensed liquid or rainwater entering through the flue opening
(25) from reaching the tube (3).
2. A heat exchanger (1) according to Claim 1, comprising a body (2) manufactured from a sheet metal material.
3. A heat exchanger (1) according to Claim 1, comprising a body (2) manufactured from a plastic material.
4. A heat exchanger (1) according to Claim 1, comprising a second chamber (23) whose wide surface is in the form of an arc extending parallel to the body (2).
5. A heat exchanger (1) according to Claim 1, comprising a second chamber (23) which is in the form of rectangular prism. 6. A heat exchanger (1) according to Claim 1, 4 or 5, comprising a plate (24) which has an arc form.
7. A heat exchanger (1) according to Claim 1, 4 or 5, comprising a plate (24) which has a rectangular form.
8. A heat exchanger (1) according to Claim 1, 6 or 7, comprising a plate (24) on both opposite sides of which two spaces are formed symmetrical to each other when placed on the discharge opening (22).
9. A heat exchanger (1) according to Claim any one of Claims 1 to 3, comprising a protrusion positioned on the cylindrical inner surface of the body (2) for directing the gas to the discharge opening (22).
10. A heat exchanger (1) according to Claim any one of Claims 1 to 3, comprising a recess positioned on the cylindrical inner surface of the body (2) for directing the gas to the discharge opening (22).
EP20722695.2A 2020-01-29 2020-01-29 Heat exchanger with gas discharge system Active EP3877705B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/TR2020/050055 WO2021154166A1 (en) 2020-01-29 2020-01-29 Heat exchanger with gas discharge system

Publications (2)

Publication Number Publication Date
EP3877705A1 true EP3877705A1 (en) 2021-09-15
EP3877705B1 EP3877705B1 (en) 2021-12-22

Family

ID=70476311

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20722695.2A Active EP3877705B1 (en) 2020-01-29 2020-01-29 Heat exchanger with gas discharge system

Country Status (2)

Country Link
EP (1) EP3877705B1 (en)
WO (1) WO2021154166A1 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19912572C2 (en) * 1999-03-19 2001-03-29 Viessmann Werke Kg Compact boiler, especially for use as a condensing boiler
JP6482641B2 (en) * 2014-03-17 2019-03-13 コンデヴォ ソシエタ ペル アチオニ Method for manufacturing a set of heat exchange cells and set of heat exchange cells thus obtained
UA117857C2 (en) * 2014-03-17 2018-10-10 Кондево С.П.А. Heat exchange cell and method
PT2995880T (en) * 2014-09-15 2018-02-02 Baxi Spa Improved boiler heat exchanger
IT201600074665A1 (en) * 2016-07-18 2018-01-18 Ariston Thermo Spa HEAT EXCHANGER FOR BOILER OR SIMILAR

Also Published As

Publication number Publication date
WO2021154166A1 (en) 2021-08-05
EP3877705B1 (en) 2021-12-22

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