WO2014189244A1 - Échangeur de chaleur écologique - Google Patents

Échangeur de chaleur écologique Download PDF

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Publication number
WO2014189244A1
WO2014189244A1 PCT/KR2014/004468 KR2014004468W WO2014189244A1 WO 2014189244 A1 WO2014189244 A1 WO 2014189244A1 KR 2014004468 W KR2014004468 W KR 2014004468W WO 2014189244 A1 WO2014189244 A1 WO 2014189244A1
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WO
WIPO (PCT)
Prior art keywords
heat exchanger
heat exchange
tube
heat
eco
Prior art date
Application number
PCT/KR2014/004468
Other languages
English (en)
Korean (ko)
Inventor
김태영
Original Assignee
(주)귀뚜라미
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
Priority claimed from KR1020130056160A external-priority patent/KR20140051760A/ko
Application filed by (주)귀뚜라미 filed Critical (주)귀뚜라미
Publication of WO2014189244A1 publication Critical patent/WO2014189244A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/24—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
    • 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
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/047—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag
    • F28D1/0477—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag the conduits being bent in a serpentine or zig-zag
    • F28D1/0478—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag the conduits being bent in a serpentine or zig-zag the conduits having a non-circular cross-section
    • 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
    • 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
    • F28D7/08—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 the conduits being otherwise bent, e.g. in a serpentine or zig-zag
    • F28D7/082—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 the conduits being otherwise bent, e.g. in a serpentine or zig-zag with serpentine or zig-zag configuration
    • F28D7/085—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 the conduits being otherwise bent, e.g. in a serpentine or zig-zag with serpentine or zig-zag configuration in the form of parallel conduits coupled by bent portions

Definitions

  • the present invention relates to an environment-friendly heat exchanger, and more particularly, to an environment-friendly heat exchanger to suppress the generation of carbon monoxide by gently lowering the temperature of the combustion gas passing through the heat exchanger through the structure of the heat exchanger.
  • the present invention also relates to an environmentally friendly heat exchanger capable of preventing overheating and deformation of the heat exchanger and reducing the overall size.
  • the present invention relates to an environment-friendly heat exchanger that reduces the occurrence of damage or noise caused by water shock while optimizing the shape of the 'U' connecting tube connecting the heat exchange tubes to each other.
  • the heat exchanger is a heat exchanger that intersects heating fluids and heated fluids having different temperatures, and is widely used for heating, air conditioning, power generation, cooling, and waste heat recovery in various other heating and cooling devices including boilers and air conditioners. Used.
  • the condensing boiler uses a sensible heat exchanger (1) having sensible heat exchange with flame and combustion gas generated during combustion of fuel as shown in FIG. 1 and a latent heat exchanger (2) having latent heat exchange with combustion gas.
  • the conventional sensible heat exchanger (1) as described above has a heat exchange fin (3) on all of the plural sensible heat exchange pipes stacked up and down, so that the combustion chamber temperature gradient in the sensible heat exchanger (1) rapidly increases. Descend.
  • the heat exchanger body is overheated by the high temperature flame and combustion gas generated from the burner 8, and when the heat exchanger body is overheated, deformation occurs in the sensible heat exchanger 1. There is a problem that a failure occurs.
  • the present invention has been proposed to solve the problems described above, by gently lowering the temperature of the combustion gas passing through the heat exchanger by improving the structure of the heat exchanger to suppress the generation of carbon monoxide, to prevent overheating and deformation of the heat exchanger At the same time, to reduce the overall size and to provide an environmentally friendly heat exchanger to prevent damage or noise caused by water shock in the 'U'-shaped connection pipe.
  • the eco-friendly heat exchanger is an eco-friendly heat exchanger that exchanges heat with a high temperature heat source while circulating water along a plurality of first heat exchange tubes, a plurality of second heat exchange tubes, and a third heat exchange tube installed on the heat exchanger body.
  • the heat exchanger body is composed of front / rear / left / right side plates;
  • the first heat exchange tubes are connected to each other in a zigzag direction through the left and right side plates, and heat exchange fins are assembled on the outer circumferential surface, and the second heat exchange tubes are connected to each other in a zigzag direction through the left and right side plates.
  • the third heat exchange tube is installed along an inner circumferential surface of the heat exchanger body, and supports an inner circumferential surface of the heat exchanger body.
  • the first heat exchanger tube having the heat exchanger fins is installed at a lower portion of the heat exchanger body so as to be installed far from the direction in which the high temperature heat source is supplied, and the second heat exchanger tube and the third heat exchanger which do not have the heat exchanger fins.
  • the heat exchanger tube is preferably installed in the remaining part of the heat exchanger body in which the first heat exchanger tube is not installed.
  • the second heat exchange tube is preferably installed on the upper portion of the first heat exchange tube
  • the third heat exchange tube is preferably installed on the upper portion of the second heat exchange tube.
  • the first heat exchange tube and the second heat exchange tube may be fixed to the left and right side plates by welding, and the outlet of the third heat exchange tube may be fixed to the front side plate by welding.
  • the contact tube is connected to the second heat exchange tube so that water flows through the contact tube.
  • the heat insulation board is inserted in the inner surface of the said left / right side plate.
  • the inner circumferential surface of the left / right side plate into which the heat insulation plate is inserted is provided with an embossed portion protruding inward and in contact with the heat insulation plate to form a heat insulation space between the left and right side plates and the heat insulation plate.
  • the first heat exchange tube is an oval pipe having an elliptical cross section, and the 'U' connector connecting the ends of the two oval pipes includes a straight portion and a curved portion, and the 'U' shape. It is preferable that the length of the straight part of a connection pipe is 10 mm or more and 15 mm or less.
  • the height of the 'U' connector is preferably 30.5mm or more and 35.5mm or less.
  • the outer diameter of the long axis of the 'U'-shaped connector is 26mm or more and 29mm or less
  • the short axis outer diameter of the' U'-shaped connector is preferably 13mm or more and 16mm or less.
  • the present invention as described above, by adopting different types of first to third heat exchange tubes as heat exchange tubes and improving their installation structure, the temperature gradient inside the heat exchanger is smoothly lowered and carbon monoxide is suppressed.
  • the present invention prevents deformation of the heat exchanger by welding the first heat exchanger tube and the second heat exchanger tube to the side plate of the heat exchanger body to fix the inner surface of the heat exchanger body with the third heat exchanger tube.
  • the present invention prevents the heat exchanger body from being overheated by using a contact tube, a heat insulating plate and a heat insulating space to prevent deformation of the heat exchanger body.
  • the heat exchange rate can be increased while the occurrence of damage or noise due to water shock can be reduced.
  • FIG. 1 is a cross-sectional view showing a condensing boiler employing a heat exchanger according to the prior art.
  • FIG. 2 is a perspective view of an environment-friendly heat exchanger according to the present invention.
  • FIG 3 is a view showing a water circulation state of the eco-friendly heat exchanger according to the present invention.
  • Figure 4 is a bottom view and A-A cross-sectional view of an environmentally friendly heat exchanger according to the present invention.
  • FIG 5 is a front view and a cross-sectional view B-B of the eco-friendly heat exchanger according to the present invention.
  • Figure 6 is a view showing the 'U' shaped tube of environmentally friendly heat exchanger according to the present invention.
  • the direction in which the burner is installed is determined as the upper side and the opposite side is determined as the lower side, it is obvious that the vertical direction can be changed according to the installation position of the burner.
  • the heat exchanger body will be described by dividing the front / rear / left / right side plate, but the front / rear / left / right direction may vary depending on the viewing angle.
  • the inlet and the outlet are specified, but if the flow of water is changed by the design change, the inlet can be the outlet and the outlet can be the inlet.
  • the eco-friendly heat exchanger according to the present invention is largely the heat exchanger body 110, the first heat exchange tube 120, the second heat exchange tube 130 and And a third heat exchange tube 140.
  • the first heat exchange tube 120, the second heat exchange tube 130 and the third heat exchange tube 140 are connected to each other so that water flows sequentially along them. Water is supplied through the inlet IN and discharged through the outlet OUT.
  • FIG. 3 illustrates the flow of water along the first heat exchange tube 120, the second heat exchange tube 130, and the third heat exchange tube 140.
  • the water supplied to the inlet IN flows in the same order as the marked number and then is discharged to the outlet OUT.
  • the heat exchanger body 110 has a top and bottom open, respectively, flame and hot combustion gas (ie, heat source) provided from the burner (not shown) installed on the upper side passes through the heat exchanger body 110 from the upper side to the lower side. To flow.
  • flame and hot combustion gas ie, heat source
  • heat is exchanged between the water (eg, direct water) circulating through the first heat exchange tube 120, the second heat exchange tube 130, and the third heat exchange tube 140 and a high temperature heat source to heat the water. .
  • water eg, direct water
  • the heat exchanger body 110 is made of front / rear / left / right side plates (F, B, L, R). Surrounded by the front / rear / left / right side plates F, B, L, and R, the side is blocked and the top and bottom are open.
  • the flame and hot combustion gas generated from the burner pass from the top of the open heat exchanger body 110 to the bottom.
  • the left side plate (L) and the right side plate (R) facing each other a plurality of through holes are provided with the first heat exchange tube 120, the second heat exchange tube 130 and the third heat exchange tube 140, respectively It is installed.
  • the contact tube 111 is provided in the front side plate F and the rear side plate B along the longitudinal direction of the side plates F and B, respectively.
  • the contact tube 111 is connected to the second heat exchange tube 130 so that water flows through the contact tube 111.
  • the contact tube 111 may be integrally formed on the front side plate F and the rear side plate B, or may be attached to the front side plate F and the rear side plate B after molding a separate tube.
  • the contact tube 111 If the contact tube 111 is further included, the water flowing therein absorbs heat, thereby increasing the heat exchange rate, preventing the heat exchanger body 110 from overheating, and deforming the heat exchanger body 110 due to overheating. prevent.
  • the heat insulation board 112 is inserted in the inner side surface of the left side plate L and the right side plate R like FIG. 4 (b) which shows the A-A cutting surface of FIG. Inserting the insulation plate 112 prevents heat from being directly transmitted to the heat exchanger body 110, thereby preventing deformation of the heat exchanger body 110 due to overheating.
  • the inner circumferential surfaces of the left side plate L and the right side plate R, into which the heat insulation plate 112 is inserted are provided with an embossing portion 113 protruding inward to contact the heat insulation plate 112.
  • an insulating space is formed between the left side plate L and the heat insulating plate 112 and between the right side plate R and the heat insulating plate 112. Therefore, the heat exchanger body 110 is further prevented from being overheated by the heat insulation space, and at the same time, the heat source is prevented from leaking to the outside, thereby increasing the thermal efficiency.
  • the first heat exchange tube 120 is composed of a plurality.
  • each of the first heat exchange tubes 120 uses an oval pipe having an oval or egg-shaped cross section as shown in FIG. 5 (b).
  • the first heat exchange tubes 120 are assembled in a zigzag direction through the left and right side plates (L, R), and heat exchange fins 120a (heat exchange fins) are provided on the outer circumferential surface of the bottom view as shown in FIG. It is assembled.
  • the heat exchange fins 120a are usually assembled over the entire length of the first heat exchange tube 120.
  • the first heat exchange tube 120 has a heat exchange fin (120a) and the heat exchanger body 110 to connect a straight pipe portion (for example, a misfire pipe) disposed inside the heat exchanger body 110 and the straight pipes. ) Consists of a portion of the 'U' connector (see 121 in Figure 6) disposed outside.
  • the first heat exchange tube 120 is fixed to the left and right side plates (L, R) through welding. More specifically, the 'U' shaped connector portion of the first heat exchanger tube 120 is fixed to the left and right side plates (L, R).
  • the first heat exchanger tube 120 when the first heat exchanger tube 120 is fixed to the left and right side plates L and R, the first heat exchanger tube 120 firmly grips the heat exchanger body 110 to prevent deformation of the heat exchanger body 110. prevent.
  • an inlet (IN) through which water is introduced is installed at the side of the first heat exchanger pipe 120 to receive direct water or preheated water from the outside and supply the heat exchanger according to the present invention.
  • the 'U'-shaped connecting tube 121 connecting the two oval pipes to each other should also have an oval cross section.
  • an 'U'-shaped connector 121 having an elliptical cross section also referred to as an' Oval U-bender ', is used.
  • FIG. 6A is a perspective view
  • FIG. 6B is a front view
  • FIG. 6C is a side view.
  • the 'U' shaped connector 121 includes a straight portion 121a and a curved portion 121b. At this time, the length of the straight portion 121a of the 'U'-shaped connecting tube 121, as shown in Figure 6 (b) is preferably 10mm or more and 15mm or less.
  • the straight portion 121a By providing the straight portion 121a, the water discharged from the oval pipe is suddenly hit by the curved portion 121b, thereby preventing the water impact on the 'U'-shaped connecting pipe 121 and improving the flow characteristics of the water. .
  • the 'U'-shaped connection pipe 121 prevents the occurrence of damage and noise.
  • the length of the 'U'-shaped connection tube 121 is too long, the entire flow path of the first heat exchange tube 120 is long, the thermal efficiency is lowered and the circulation time of the water is excessively long.
  • the overall height of the U-shaped connecting tube 121 including the straight portion 121a and the curved portion 121b is 30.5 mm or more and 35.5 mm or less.
  • the center axis spacing of the straight part 121a is 20 mm or more and 28 mm or less.
  • the major axis outer diameter of the U-shaped connecting tube 121 having an oval cross section is 26 mm or more and 29 mm or less, and the short axis outer diameter is preferably 13 mm or more and 16 mm or less.
  • the thickness of the 'U'-shaped connector 121 is 0.75mm or more and 0.85mm or less.
  • the optimum shape is matched to the shape of the straight portion 121a and the curved portion 121b of the' U'-shaped connector 121. Have it.
  • the second heat exchange tube 130 also includes a plurality.
  • each of the second heat exchange tubes 130 may be a regular tube having a circular cross section as shown in FIG.
  • the second heat exchanger tube 130 is also connected to each other in a zigzag direction through the left and right side plates L and R, and welded to the left and right side plates L and R.
  • the second heat exchanger tube 130 is also welded to the left and right side plates L and R, the second heat exchanger tube 130 is firmly gripped together with the first heat exchanger tube 120 to prevent deformation of the heat exchanger body 110.
  • the third heat exchange tube 140 is installed along the inner circumferential surface of the heat exchanger body 110 and supports the inner circumferential surface of the heat exchanger body 110. That is, the third heat exchange tube 140 is installed along an inner circumferential surface of the heat exchanger body 110, for example, because one tube is bent in a substantially quadrangular shape.
  • the third heat exchange tube 140 serves as a pressure stay to prevent deformation during thermal expansion or contraction of the heat exchanger body 110.
  • the heat exchanger tube also plays its own role.
  • the inlet end of the third heat exchange tube 140 is connected to the outlet end of the second heat exchange tube 130, and the outlet end of the third heat exchange tube 140, that is, the outlet port, is welded to the front side plate F. It is fixed. It is discharged through the outlet (OUT) of the third heat exchange tube (140).
  • the plurality of heat exchange tubes are not all the same, but the first heat exchange tube 120 and the second heat exchange fin 120a having a heat exchange fin 120a for significantly increasing the heat exchange rate are not the same. It is divided into a heat exchange tube 130 and a third heat exchange tube 140.
  • first heat exchanger tube 120 having the heat exchange fins 120a is installed at the lower portion of the heat exchanger body 110 so as to be installed far from the direction in which the high temperature heat source is supplied, and does not include the heat exchange fins 120a.
  • the second heat exchanger tube 130 and the third heat exchanger tube 140 are installed in the remaining part of the heat exchanger body 110 in which the first heat exchanger tube 120 is not installed.
  • the second heat exchanger tube 130 is installed in the middle of the remaining portions where the first heat exchanger tube 120 is not installed, and the third heat exchanger tube 140 is connected to the upper portion of the second heat exchanger tube 130. Is installed.
  • the reason for this configuration is to prevent the generation of carbon monoxide (CO) as the temperature drops rapidly in the course of passing the high temperature combustion gas through the heat exchanger of the present invention.
  • the first heat exchange tube 120 is provided with a heat exchange fin (120a) to prevent the heat efficiency is lowered by allowing the heat absorbed sufficiently from the combustion gas is lowered to some extent.
  • the present invention has a high thermal efficiency, while suppressing the generation of carbon monoxide caused by the sharp drop in the temperature of the combustion gas. Therefore, it is possible to prevent carbon monoxide from entering the room and harm the human body, and to significantly reduce the amount of carbon monoxide that is harmful to the environment.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

La présente invention porte sur un échangeur de chaleur écologique, qui est capable de supprimer la production de monoxyde de carbone par abaissement graduel de la température d'un gaz de combustion passant à travers l'échangeur de chaleur, grâce à un perfectionnement structurel de l'échangeur de chaleur. En outre, la présente invention porte sur un échangeur de chaleur écologique, qui est capable d'éviter la surchauffe et la déformation de l'échangeur de chaleur et capable de réduire la dimension globale. De plus, la présente invention porte sur un échangeur de chaleur écologique, qui est capable d'améliorer le degré d'échange de chaleur et de réduire la détérioration ou la production de bruit, qui sont dues aux coups de bélier, grâce à une optimisation de la forme d'un tube de liaison en forme de U qui relie des tubes d'échange de chaleur.
PCT/KR2014/004468 2013-05-20 2014-05-19 Échangeur de chaleur écologique WO2014189244A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020130056160A KR20140051760A (ko) 2012-10-23 2013-05-20 친환경 열교환기
KR10-2013-0056160 2013-05-20

Publications (1)

Publication Number Publication Date
WO2014189244A1 true WO2014189244A1 (fr) 2014-11-27

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Application Number Title Priority Date Filing Date
PCT/KR2014/004468 WO2014189244A1 (fr) 2013-05-20 2014-05-19 Échangeur de chaleur écologique

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WO (1) WO2014189244A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20050000126A (ko) * 2003-06-23 2005-01-03 주식회사 경동보일러 연소기기용 열교환기 구조
KR100570291B1 (ko) * 2004-10-13 2006-04-11 주식회사 경동보일러 보일러/급탕기용 공용열교환기
KR20080056364A (ko) * 2006-12-18 2008-06-23 (주)귀뚜라미보일러 콘덴싱 보일러용 열교환기
JP2012102910A (ja) * 2010-11-08 2012-05-31 Nippon Thermoener Co Ltd 真空式温水機

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20050000126A (ko) * 2003-06-23 2005-01-03 주식회사 경동보일러 연소기기용 열교환기 구조
KR100570291B1 (ko) * 2004-10-13 2006-04-11 주식회사 경동보일러 보일러/급탕기용 공용열교환기
KR20080056364A (ko) * 2006-12-18 2008-06-23 (주)귀뚜라미보일러 콘덴싱 보일러용 열교환기
JP2012102910A (ja) * 2010-11-08 2012-05-31 Nippon Thermoener Co Ltd 真空式温水機

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