WO2008078219A1 - A heat exchanger - Google Patents

A heat exchanger Download PDF

Info

Publication number
WO2008078219A1
WO2008078219A1 PCT/IB2007/055044 IB2007055044W WO2008078219A1 WO 2008078219 A1 WO2008078219 A1 WO 2008078219A1 IB 2007055044 W IB2007055044 W IB 2007055044W WO 2008078219 A1 WO2008078219 A1 WO 2008078219A1
Authority
WO
WIPO (PCT)
Prior art keywords
tubes
heat exchanger
slim
fat
water
Prior art date
Application number
PCT/IB2007/055044
Other languages
French (fr)
Inventor
Pinar Unsal
Original Assignee
Turk Demir Dokum Fabrikalari Anonim Sirketi
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 Turk Demir Dokum Fabrikalari Anonim Sirketi filed Critical Turk Demir Dokum Fabrikalari Anonim Sirketi
Publication of WO2008078219A1 publication Critical patent/WO2008078219A1/en

Links

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
    • 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
    • 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
    • F24H8/00—Fluid heaters characterised by means for extracting latent heat from flue gases by means of condensation
    • 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
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/0066—Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids
    • 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
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/0066—Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids
    • F28D7/0075—Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids with particular circuits for the same heat exchange medium, e.g. with the same heat exchange medium flowing through sections having different heat exchange capacities or for heating or cooling the same heat exchange medium at different temperatures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/06—Constructions of heat-exchange apparatus characterised by the selection of particular materials of plastics material
    • F28F21/067—Details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0202—Header boxes having their inner space divided by partitions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2210/00—Heat exchange conduits
    • F28F2210/08—Assemblies of conduits having different features
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]

Definitions

  • the present invention relates to a heat exchanger, which is employed in condensing water heaters used at homes to obtain heating and/or domestic hot water, and which operates with high heat transfer efficiency as well as with low turbulence and noise level.
  • Heat exchangers are devices which perform heat transfer between two fluids of different temperatures.
  • heat exchangers used in condensing boilers, heat exchange is realized between the water that is desired to be heated and the natural gas which will transfer the combustion energy to the water.
  • natural gas should combust in the most efficient way and the domestic water should be heated most efficiently by the said combustion gas.
  • a mixer providing the pre-mixing of natural gas and air
  • a burner in which the air-gas mixture is burned
  • a combustion chamber where the movement of the combustion gas is directed and which accommodates the heat exchanger
  • a heat exchanger inside of which domestic water and outside of which combustion gas circulates
  • a flue gas outlet which discharges the flue combustion gas from the combustion chamber after the heat exchange is completed
  • a condensation water outlet which discharges the water, generated by the condensation of the water vapor within the flue combustion gas, from the combustion chamber after the heat exchange is completed.
  • Heat exchangers used in domestic water heaters are of the type with tubes.
  • the water to be heated passes through the inside of the tubes twisted on one another and the hot combustion gases formed in the combustion chamber pass from the outside of these tubes.
  • some of the said tubes have big diameters and some of them have small diameters.
  • such an exchanger is disclosed in the International patent application No. WO9706398.
  • the objective of the present invention is to realize a heat exchanger, which is employed in condensing water heaters used at homes to obtain heating and/or hot domestic water, and operates with a low noise level.
  • Figure 1 is the perspective view of the heat exchanger.
  • the inventive heat exchanger (1) comprises relatively slim (3) and fat (4) cylindrical tubes with the same length, arranged onto each other having the end portions in alignment.
  • the said fat tubes (4) aggregate at the top part of the exchanger (1) whereas the slim tubes (3) aggregate at the bottom part and they constitute the lower (5) and upper (6) tube groups.
  • Some of the adjacent ones of the said cylindrical tubes are connected so as to form a continuous channel for water passage, by means of the chambers (9) functioning as supports located on the two collectors (2) which close two open ends of the said tubes.
  • the collectors (2) connecting the said tube groups are preferably produced from polyamide 66 material because of its advantages such as the fact that detail forms can be produced easily with injection method, and low cost and high performance.
  • the water to be heated is input (7) from two or more slim tubes (3) at the lowest row of the exchanger (1). Afterwards, water moves forward within the lower tube group (5) comprising slim tubes (3), in two or more slim tubes (3) in a parallel manner.
  • the number of slim tubes (3) through which water travels in a parallel manner may vary in every passage. For example, when water travels in three slim tubes (3) in a parallel manner, it can be provided that the number of tubes (3) to which three slim tubes (3) are connected at a chamber (9) can be reduced to two, water flow can be distributed among these two slim tubes (3) and water can be ensured to travel only in two slim tubes (3) in a parallel manner.
  • one fat tube (4) is connected to two or more slim tubes (3).
  • This way, the water flow within two or more slim tubes (3) is transferred into a fat tube (4) and thus the total cross-section area through which total water flow runs is prevented from changing to a great extent. Therefore regularity of the flow regime is maintained and the turbulence and noise is minimized.
  • Water passes through all the upper tube group tubes (6), each time being transferred from one fat tube to another fat tube by means of the chambers (9), without an interruption of its flow and is output (8) after passing through a fat tube (4) at the uppermost row of the upper tube group (6) comprising fat tubes (4).
  • an upper tube group (6) comprising 17 fat tubes

Abstract

The present invention relates to a heat exchanger, which is employed in condensing water heaters used at homes to obtain heating and/or domestic hot water, and which operates with high heat transfer efficiency as well as with low turbulence and noise level.

Description

Description A HEAT EXCHANGER
[ 1 ] Field of the Invention
[2] The present invention relates to a heat exchanger, which is employed in condensing water heaters used at homes to obtain heating and/or domestic hot water, and which operates with high heat transfer efficiency as well as with low turbulence and noise level.
[3] Background of the Invention
[4] Heat exchangers are devices which perform heat transfer between two fluids of different temperatures. In the heat exchangers used in condensing boilers, heat exchange is realized between the water that is desired to be heated and the natural gas which will transfer the combustion energy to the water. In the heat exchangers, natural gas should combust in the most efficient way and the domestic water should be heated most efficiently by the said combustion gas. For that reason, there are the following parts in the system: a mixer providing the pre-mixing of natural gas and air, a burner in which the air-gas mixture is burned, a combustion chamber where the movement of the combustion gas is directed and which accommodates the heat exchanger, a heat exchanger inside of which domestic water and outside of which combustion gas circulates, a flue gas outlet which discharges the flue combustion gas from the combustion chamber after the heat exchange is completed, and a condensation water outlet which discharges the water, generated by the condensation of the water vapor within the flue combustion gas, from the combustion chamber after the heat exchange is completed.
[5] Heat exchangers used in domestic water heaters are of the type with tubes. In these exchangers, the water to be heated passes through the inside of the tubes twisted on one another and the hot combustion gases formed in the combustion chamber pass from the outside of these tubes. In the state of the art, with the purpose of improving heat transfer and reducing costs, it is observed that some of the said tubes have big diameters and some of them have small diameters. For example, such an exchanger is disclosed in the International patent application No. WO9706398.
[6] In the state of the art, there are some problems in the heat exchangers which comprise tubes with two different diameters. One of these problems is the intense noise encountered during the operation of the exchanger. Main reason of this noise is the retention of a certain amount of air in the tubes. The air, which cannot be discharged during filling of the exchanger with water and during the operation cycle, is located in the interior of the chambers on the collectors connecting the tubes to each other, and hinders regular flow. Consequently, regardless of how rounded they are, flow regime at the chambers where tubes are curving becomes irregular and turbulences occur.
[7] Summary of the Invention
[8] The objective of the present invention is to realize a heat exchanger, which is employed in condensing water heaters used at homes to obtain heating and/or hot domestic water, and operates with a low noise level.
[9] For that purpose, a heat exchanger, wherein a plurality of tubes of small diameter are connected to a tube of big diameter and which comprises specially designed collector water chambers connecting these tubes, is realized whereby a solution has been provided to the problem.
[10] Detailed Description of the Invention
[11] The heat exchanger realized to fulfill the objectives of the present invention is illustrated in the accompanying figure, in which;
[12] Figure 1 is the perspective view of the heat exchanger.
[13] The parts shown in the figures are numbered individually where the numbers refer to the following:
[14] 1. Heat exchanger
[15] 2. Collector
[16] 3. Slim tube
[17] 4. Fat tube
[18] 5. Lower tube group
[19] 6. Upper tube group
[20] 7. Input
[21] 8. Output
[22] 9. Chamber
[23] The inventive heat exchanger (1) comprises relatively slim (3) and fat (4) cylindrical tubes with the same length, arranged onto each other having the end portions in alignment. The said fat tubes (4) aggregate at the top part of the exchanger (1) whereas the slim tubes (3) aggregate at the bottom part and they constitute the lower (5) and upper (6) tube groups.
[24] Some of the adjacent ones of the said cylindrical tubes are connected so as to form a continuous channel for water passage, by means of the chambers (9) functioning as supports located on the two collectors (2) which close two open ends of the said tubes. The collectors (2) connecting the said tube groups are preferably produced from polyamide 66 material because of its advantages such as the fact that detail forms can be produced easily with injection method, and low cost and high performance.
[25] When the chambers (9), which are disposed on the collectors (2), and which are rounded and shaped in accordance with the tubes between which water passage is desired to be realized, are divided into two horizontally, diameter of the upper hemi- spherical form is smaller than the diameter of the lower hemispherical form. Thus, the volume, to which the air tending to accumulate in the inside of the upper hemispheres of the chambers (9) clings, is reduced and it is ensured that air escapes from these chambers (9) more easily and is transferred into the tubes.
[26] The water to be heated is input (7) from two or more slim tubes (3) at the lowest row of the exchanger (1). Afterwards, water moves forward within the lower tube group (5) comprising slim tubes (3), in two or more slim tubes (3) in a parallel manner. The number of slim tubes (3) through which water travels in a parallel manner may vary in every passage. For example, when water travels in three slim tubes (3) in a parallel manner, it can be provided that the number of tubes (3) to which three slim tubes (3) are connected at a chamber (9) can be reduced to two, water flow can be distributed among these two slim tubes (3) and water can be ensured to travel only in two slim tubes (3) in a parallel manner.
[27] At the point where the slim tubes (3) are finished, one fat tube (4) is connected to two or more slim tubes (3). This way, the water flow within two or more slim tubes (3) is transferred into a fat tube (4) and thus the total cross-section area through which total water flow runs is prevented from changing to a great extent. Therefore regularity of the flow regime is maintained and the turbulence and noise is minimized. Water passes through all the upper tube group tubes (6), each time being transferred from one fat tube to another fat tube by means of the chambers (9), without an interruption of its flow and is output (8) after passing through a fat tube (4) at the uppermost row of the upper tube group (6) comprising fat tubes (4).
[28] In one embodiment of the invention, an upper tube group (6) comprising 17 fat tubes
(4) with a diameter of 18 mm and a lower tube group (5) comprising 30 slim tubes (3) with a diameter of 12 mm are used. Length of each tube fold is 260 mm. In the collectors (2), when all the chambers (9) are divided into two horizontally, diameter of the upper hemispherical form is smaller than the diameter of the lower hemispherical form. For example, diameter of the upper hemispherical form of the chambers (9) connecting the fat tubes to each other is 16mm whereas diameter of the lower hemispherical form is 18 mm. Water is input into three slim tubes (3) by means of the collectors (2) and moves forward within three or two slim tubes (3) in a parallel manner. When passing from all slim tubes (3), i.e. the entire lower tube group (5), water passes through three slim tubes (3) into a fat tube (4) and without an interruption of its flow, at every pass it moves upwards from a fat tube and upon passing through a fat tube (4) at the uppermost row, it is output (8).

Claims

Claims
[1] A heat exchanger (1) comprising relatively slim (3) and fat (4) cylindrical tubes of the same length, arranged on top each other having the end portions in alignment, wherein the said fat tubes (4) aggregate at the top part of the exchanger (1) and the slim tubes (3) aggregate at the bottom part to form the lower (5) and upper (6) tube groups, wherein some of the adjacent ones of the said cylindrical tubes are connected so as to form a continuous channel for water passage, by means of the chambers (9) functioning as supports located on the two collectors (2) which close two open ends of the said tubes, characterized in that when the said chambers (9) are divided into two horizontally, diameter of the upper hemispherical form is smaller than the diameter of the lower hemispherical form.
[2] A heat exchanger (1) according to Claim 1, characterized in that the water to be heated is input (7) from two or more slim tubes (3) at the lowest row of the said exchanger (1).
[3] A heat exchanger (1) according to any of the preceding claims, characterized in that the water moves forward within the lower tube group (5) comprising slim tubes (3), in two or more slim tubes (3) in a parallel manner.
[4] A heat exchanger (1) according to Claim 3, characterized in that the number of slim tubes (3) through which water travels in a parallel manner changes after a chamber (9).
[5] A heat exchanger (1) according to any of the preceding claims, characterized in that one fat tube (4) is connected to two or more slim tubes (3) via a chamber (9) at the point where the slim tubes (3) are finished.
[6] A heat exchanger (1) according to any of the preceding claims, characterized in that water passes through all the upper tube group tubes (6), each time being transferred from one fat tube to another fat tube by means of the chambers (9), without an interruption of its flow.
[7] A heat exchanger (1) according to any of the preceding claims, characterized in that water is output (8) after passing through a fat tube (4) at the uppermost row of the upper tube group (6) comprising fat tubes (4).
[8] A heat exchanger (1) according to any of the preceding claims, characterized in that the said collector (2) is produced from polyamide 66 material.
[9] A heat exchanger (1) according to Claim 8, characterized in that the said collector (2) is produced with injection method.
PCT/IB2007/055044 2006-12-22 2007-12-12 A heat exchanger WO2008078219A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR2006/07362 2006-12-22
TR200607362 2006-12-22

Publications (1)

Publication Number Publication Date
WO2008078219A1 true WO2008078219A1 (en) 2008-07-03

Family

ID=39400893

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2007/055044 WO2008078219A1 (en) 2006-12-22 2007-12-12 A heat exchanger

Country Status (2)

Country Link
TR (1) TR200903855T1 (en)
WO (1) WO2008078219A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103822524A (en) * 2014-03-19 2014-05-28 浙江广涛卫厨有限公司 Water-collecting-box type heat exchanger
CN106288392A (en) * 2015-05-22 2017-01-04 成都鑫众吉节能科技有限公司 A kind of gas industry boiler condensation formula heat exchanger
CN117109335A (en) * 2023-10-20 2023-11-24 连云港晟源科技有限公司 Raw coke oven gas waste heat utilization equipment

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH302665A (en) * 1951-08-20 1954-10-31 Junkers & Co Elbow.
WO2006097959A1 (en) * 2005-03-15 2006-09-21 Tec.Lab. S.C.R.L. Heat exchanger for condensing wall-mounted boilers

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH302665A (en) * 1951-08-20 1954-10-31 Junkers & Co Elbow.
WO2006097959A1 (en) * 2005-03-15 2006-09-21 Tec.Lab. S.C.R.L. Heat exchanger for condensing wall-mounted boilers

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103822524A (en) * 2014-03-19 2014-05-28 浙江广涛卫厨有限公司 Water-collecting-box type heat exchanger
CN103822524B (en) * 2014-03-19 2016-02-17 浙江广涛卫厨有限公司 Catchment boxlike heat exchanger
CN106288392A (en) * 2015-05-22 2017-01-04 成都鑫众吉节能科技有限公司 A kind of gas industry boiler condensation formula heat exchanger
CN117109335A (en) * 2023-10-20 2023-11-24 连云港晟源科技有限公司 Raw coke oven gas waste heat utilization equipment
CN117109335B (en) * 2023-10-20 2024-01-02 连云港晟源科技有限公司 Raw coke oven gas waste heat utilization equipment

Also Published As

Publication number Publication date
TR200903855T1 (en) 2009-09-23

Similar Documents

Publication Publication Date Title
CN103900255B (en) Gas furnace and heat exchanger assemblies thereof
RU2418246C1 (en) Hot-water boiler
CA2783277A1 (en) High efficiency gas-fired water heater
RU2674850C2 (en) Tube for heat exchanger with at least partially variable cross-section and heat exchanger equipped therewith
CN105793653A (en) Exchanger for heating boilers
WO2008078219A1 (en) A heat exchanger
KR100814938B1 (en) Apparatus for replacing heat of condensing boiler
RU2386905C1 (en) Heat generator
TWI649522B (en) Water heater having a down fired combustion assembly
RU2296270C1 (en) Air heater
KR100798629B1 (en) Apparatus for boiler heat exchanging with multi pass structure for combustion gas
WO2014109654A1 (en) Fired heat exchanger
RU53410U1 (en) DEVICE FOR GAS AND OIL HEATING
CN201072307Y (en) Cylinder type condensing heat converter
CN106642665A (en) Center furnace liner L-shaped guide pipe vertical gas boiler
CN201615608U (en) Condensing gas-fired boiler
RU2296269C1 (en) Air heater
CN219955661U (en) High-efficiency gas hot-blast stove
CN217236506U (en) Vertical low-carbon condensation energy-saving device
CN104034019A (en) Internal combustion type multi-tube sleeve gas water heater
AU2009100240A4 (en) Compact Heat Exchanger
CN216010795U (en) Shell type coal-fired water pipe boiler with changed heat exchange mode
CN212409075U (en) Water heating device
RU2273802C1 (en) Hot-water boiler
CN216159014U (en) Vertical oil-gas boiler shell boiler adopting novel heat exchange mode

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 07849442

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2009/03855

Country of ref document: TR

NENP Non-entry into the national phase

Ref country code: DE

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULES 112(1) EPC

122 Ep: pct application non-entry in european phase

Ref document number: 07849442

Country of ref document: EP

Kind code of ref document: A1