WO2005108875A1 - 熱交換器および温水装置 - Google Patents
熱交換器および温水装置 Download PDFInfo
- Publication number
- WO2005108875A1 WO2005108875A1 PCT/JP2005/008541 JP2005008541W WO2005108875A1 WO 2005108875 A1 WO2005108875 A1 WO 2005108875A1 JP 2005008541 W JP2005008541 W JP 2005008541W WO 2005108875 A1 WO2005108875 A1 WO 2005108875A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- combustion gas
- portions
- coiled
- tube
- water
- Prior art date
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
- F24H1/48—Water heaters for central heating incorporating heaters for domestic water
- F24H1/52—Water heaters for central heating incorporating heaters for domestic water incorporating heat exchangers for domestic water
- F24H1/523—Heat exchangers for sanitary water directly heated by the burner
-
- 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
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/48—Water heaters for central heating incorporating heaters for domestic water
- F24H1/52—Water heaters for central heating incorporating heaters for domestic water incorporating heat exchangers for domestic water
-
- 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
- F28D7/02—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 helically coiled
- F28D7/024—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 helically coiled the conduits of only one medium being helically coiled tubes, the coils having a cylindrical configuration
-
- 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
- F28F1/02—Tubular elements of cross-section which is non-circular
-
- 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
- F28F9/007—Auxiliary supports for elements
- F28F9/013—Auxiliary supports for elements for tubes or tube-assemblies
-
- 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
- F28F9/0246—Arrangements for connecting header boxes with flow lines
-
- 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
- F28D7/0008—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 for one medium being in heat conductive contact with the conduits for the other medium
- F28D7/0025—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 for one medium being in heat conductive contact with the conduits for the other medium the conduits for one medium or the conduits for both media being flat tubes or arrays of tubes
- F28D7/0033—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 for one medium being in heat conductive contact with the conduits for the other medium the conduits for one medium or the conduits for both media being flat tubes or arrays of tubes the conduits for one medium or the conduits for both media being bent
-
- 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
- F28D7/10—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 arranged one within the other, e.g. concentrically
- F28D7/14—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 arranged one within the other, e.g. concentrically both tubes being bent
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
- F28F13/08—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by varying the cross-section of the flow channels
-
- 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
- F28F2210/06—Heat exchange conduits having walls comprising obliquely extending corrugations, e.g. in the form of threads
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2240/00—Spacing means
-
- 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 used for performing heat recovery from combustion gas power, and to a water heater provided with a heat exchanger.
- FIG. 93 An example of heat exchange is described in Patent Document 1.
- the heat exchange described in the document has a configuration in which a coil-shaped tubular portion 40e for heat exchange is arranged in a can 2e.
- the bottom of the space 3e surrounded by the coiled tubular body 40e is closed by the partition member 6e.
- the combustion gas flows from the space 3e to the outside through the gap between the coiled tube 40e and then to the can.
- Lower opening force of body 2e Exhausted to the outside.
- a medium is also supplied to the coiled tube portion 40e at one end thereof, and the medium is heated by the combustion gas. The heated medium flows out from the other end of the coiled tubular body 40e.
- the coil-shaped tubular body 40e is formed by a single spiral tubular body, for example, a type of heat exchange using a large number of finned tubes is used. Its structure is simpler than ⁇ . Therefore, it is suitable for reducing the manufacturing cost and reducing the overall size.
- the coil-shaped tube portion 40e for heat exchange is formed using only one spiral tube, so that the combustion gas introduced into the space 3e is formed by the coiled tube member.
- the degree of contact with the part 40e is small.
- the degree of contact when the combustion gas passes through the gap between the coiled tube portions 40e is small, and the amount of heat transfer at that time is small. Therefore, the heat exchange efficiency is low in the conventional technology.
- Effective measures to increase heat exchange efficiency include: In addition to recovering sensible heat, the combustion gas power may also recover latent heat (more precisely, recover the latent heat of water vapor in the combustion gas). However, according to the above-mentioned prior art, such latent heat recovery is also difficult.
- Patent Document 1 Japanese Utility Model Application Laid-Open No. 61-69676
- An object of the present invention is to eliminate or suppress the problems of the conventional technology.
- the heat exchanger provided by the first aspect of the present invention has a combustor opening and a combustion gas outlet formed at both ends in the axial direction!
- a coil tube for heat exchange having a plurality of loops arranged in a plurality of gaps in the axial direction with a plurality of gaps therebetween; The communication with the dexterity opening prevents the space portion and the combustion gas supplied to the space portion from passing through the other end of the space portion as it is, and advances the combustion gas to the gaps of the plurality of stages.
- a heat exchanger including: a partition member; and a combustion gas passage formed around the coiled tubular portion and guiding the combustion gas passing through the plurality of gaps to the combustion gas outlet.
- each of the loop portions is formed of a tubular body having a width in a direction intersecting with the axial length is larger than a thickness in the axial length direction, and is constituted by a tubular body! /
- each of the loop portions is formed of a flat tube.
- the can body has a cylindrical peripheral wall portion, and the combustion gas passage is formed between the peripheral wall portion and the coiled tubular body portion.
- the heat exchanger according to the present invention is provided in the can body, and receives the drain flowing down from the coiled tube portion, and receives the drain by the drain receiving portion. And a discharge port for discharging the drain to the outside of the can body.
- the heat exchange according to the present invention is configured such that the drain of the combustion gas is discharged so that the drain flowing down from the coiled tubular body is discharged to the outside of the can body.
- a drain guide section leading to the outlet is provided.
- the width of the plurality of loop portions is equal to a portion close to the combustor opening. It is considered to be non-uniform so that it differs from the far part.
- the coil-shaped tubular body is provided with a plurality of convex portions protruding inward so that water passing therethrough is turbulent.
- the heat exchanger according to the present invention includes an additional coiled tube portion having a plurality of loop portions in contact with each loop portion of the coiled tube portion.
- the plurality of coiled tubular portions are configured such that hot water can be supplied to a plurality of hot water supply destinations and water is supplied and discharged separately.
- the plurality of coiled tubular portions overlap one another in the axial direction and in the direction intersecting with the axial length.
- the coiled tubular portion has a double pipe structure having an inner pipe and an outer pipe, and allows water to flow into the inner pipe and into a gap between the inner pipe and the outer pipe. It is configured so that water can flow independently of each other! /
- the heat exchange according to the present invention includes a plurality of tube modules having both ends for connection and having an intermediate portion in a loop shape, and the plurality of tube modules being connected to the shaft. And a water passage means connected to both ends of the plurality of pipe modules and allowing water to pass through them in a state where they are arranged in the can body in the longitudinal direction,
- the coiled tubular portion is configured to include the plurality of tubular modules.
- the water passage means is provided in the can body and has a water inlet, a water supply chamber provided in the can body and has a water outlet, and a water supply chamber provided in the can body. And a common chamber to which one end of each of the plurality of tube modules is connected and communicates them with each other.
- a first pipe module connected to the chamber, and a second pipe module whose other end is connected to the hot water chamber, and the water supplied to the water inlet chamber is the first pipe module. After passing through the tube module, the power flows into the common chamber and passes through the second tube module into the tapping chamber.
- the coiled tubular body is made of stainless steel.
- the hot water device provided by the second aspect of the present invention includes a combustor and a heater generated by the combustor. And heat exchange for recovering heat generated by the generated combustion gas power.
- the heat exchange has a combustor opening and a combustion gas outlet formed at both ends in the axial direction.
- a hot water device comprising: Is constituted by a tubular body whose width in the direction intersecting with the axial direction is larger than the thickness in the axial length direction! /! /
- the heat exchange provided by the third aspect of the present invention is such that a can body having a combustor opening and a combustion gas outlet formed at both ends in the axial direction is arranged in the axial direction.
- a coil-shaped tubular portion for heat exchange having a plurality of loop portions disposed in the can body, and the coiled tubular portion are formed so as to be surrounded, and one end is formed in the combustor opening.
- the heat exchanger wherein the coiled tube portion has a diameter and a width of each loop portion Include at least one additional coiled tubing that differs and A tubular wrap-around structure in which the plurality of coiled tubular portions are wrapped so that the plurality of loops are arranged in the axial length direction and a direction intersecting with the axial length direction; A plurality of gaps for passing the combustion gas formed between the plurality of loop portions so as to flow from the space portion to the combustion gas passage through the tubular body overlapping winding structure portion. It is characterized by.
- each of the coiled tubular portions is configured using a spiral tubular body in which the plurality of loop portions are spirally connected.
- the can body has a cylindrical peripheral wall, and the combustion gas passage is It is formed between a peripheral wall portion and the tubular lap winding structure portion.
- the non-heated water is supplied to the coiled tubular portion closer to the outer periphery through the coiled tubular portion closer to the inner periphery. It is configured to be
- the heat exchanger according to the present invention includes a spacer for defining each of the gaps, and the spacer includes a base having a length in the axial direction, A plurality of protrusions projecting from the base in a comb shape and inserted between the plurality of loops.
- a plurality of convex portions are provided on an outer surface of the plurality of loop portions, and the plurality of loop portions adjacent to each other in the axial direction are interposed through the plurality of convex portions. Due to the contact, the plurality of gaps are formed.
- a plurality of concave portions are provided on an outer surface of the plurality of loop portions, and among the plurality of concave portions, a portion between adjacent ones of the plurality of loop portions in the axial length direction is provided. Is the gap of the plurality of steps.
- At least one spiral groove is formed on an outer surface of the plurality of loop portions, and a part of the groove forms the gap.
- the heat exchange according to the present invention includes a drain receiving portion provided in the can body and receiving a drain flowing down from the plurality of coil-like tube portions, and a drain receiving portion. And a discharge port for discharging the received drain to the outside of the can body.
- the heat exchanger according to the present invention is configured such that the drains flowing down from the plurality of coiled tube portions are discharged to the outside of the can body so as to discharge the drains.
- the fuel cell system further includes a drain guide section that leads to the combustion gas outlet.
- the dimensions of the gaps in the plurality of stages are non-uniform so as to differ between a portion near the combustor opening and a portion far from the combustor opening.
- the plurality of coiled tube portions have the same diameter of each of the loop portions, and the plurality of loop portions arranged in a direction intersecting with the axial length direction have the same axial length. It is provided so that there is no step between them in the direction.
- the plurality of loop portions arranged in a direction intersecting with the axial length direction are provided such that their outer surfaces have a height difference in the axial length direction.
- the diameters of the plurality of coiled tubular portions are not the same, and the diameter of the innermost coiled tubular portion is maximized.
- the heat exchange according to the present invention has a connection port for a water inlet pipe, so that water supplied to the connection port of the bracket is distributed and supplied to the plurality of coiled pipe sections.
- a hot water header having a water inlet header connected to one end of each of the plurality of coiled pipe portions and a connection port for a tapping pipe;
- a tapping header connected to the other end of each of the plurality of coiled tubular portions so as to join the mouth.
- one of the ends near the combustor opening is connected to the tapping header, and the other is connected to the water inlet header.
- water is passed through the plurality of coiled tube portions from a portion far from the combustor opening to a portion close to the combustor opening.
- the can body has a cylindrical peripheral wall portion, and one end portion is fitted and connected to an end portion of the plurality of coiled tube portions. And a plurality of curved pipes penetrating the peripheral wall of the can body so that the other end is located outside the can body. At least one of the header for filling water and the tapping water is provided with the plurality of curved pipes. And connected to the other end of the bent pipe and disposed outside the can body.
- an arrangement pitch of a portion penetrating through the peripheral wall portion of the plurality of curved tubes and the other end portion is equal to an end of the plurality of coiled tube portions and the one end of the plurality of curved tubes.
- the pitch is larger than the arrangement pitch of the sections.
- the heat exchanger according to the present invention includes a plate-like member having an opening through which the plurality of curved tubes are inserted, and having a pair of end edges formed with bent protruding pieces.
- the peripheral wall portion of the can body is formed by forming the plate-like member into a cylindrical shape, and joining the protruding pieces of the pair of end edges by overlapping each other.
- the heat exchanger according to the present invention includes a first plate-like member having an opening through which the plurality of curved pipes are inserted, and a first plate-like member separate from the first plate-like member. And two plate-shaped members. In the peripheral wall portion of the can body, a pair of edges of the second plate-shaped member are joined to the first plate-shaped member, and the first and second plate-shaped members are connected in series. It is composed of V, which is a connected tubular shape.
- the plurality of coiled tube portions constitute a plurality of water passages through which water is supplied and discharged separately, and a plurality of water passages generated by passing through the plurality of water passages are provided.
- the plurality of coiled tubular portions which are configured to be individually supplied to a hot water supply destination and are in contact with each other, constitute a plurality of water passages.
- At least one of the plurality of coiled tubular portions has a double-pipe structure having an inner pipe and an outer pipe, and allows water to flow into the inner pipe and the inner pipe and the outer pipe. It is configured to be able to perform water independently of the water flow into the gap.
- each of the coiled tube portions is configured to include a plurality of substantially C-shaped tubes arranged in the axial direction, and both ends of the plurality of tubes are provided at both ends. However, at least one header for water supply to them is connected.
- the hot water device provided by the fourth aspect of the present invention includes a combustor and heat exchange for recovering heat from the combustion gas generated by the combustor.
- the heat exchange includes a can body having a combustor opening and a combustion gas outlet formed at both ends in the axial direction, and a plurality of loops arranged in the can body so as to be arranged in the axial direction.
- a coil-shaped tubular portion for heat exchange having a portion, a space formed to be surrounded by the coiled tubular portion, and one end of which communicates with the combustor opening;
- a combustion gas passage leading to an outlet comprising:
- the il-shaped tubular part includes at least one coiled tubular part of the additional oil that differs in either the diameter or the width of each loop part, and the plurality of loop parts intersect with the axial direction.
- the plurality of coiled tubular portions are arranged in a wrapped shape so that the plurality of coiled tubular portions are wrapped, and the combustion gas passes through the tubular wrapped structure portion from the space portion.
- the heat exchanger is provided such that the combustor opening is positioned higher than the combustion gas outlet, and the combustor is connected to an upper portion of the heat exchanger, and The fuel is configured to burn downward.
- each of the loops has a hollow circular shape
- the can body has a substantially cylindrical peripheral wall surrounding each of the loops, and the peripheral wall and each of the loops are provided.
- the combustion gas passage is formed between the two.
- the combustor opening is provided at a position lower than the combustion gas outlet, and the combustor is connected to a lower portion of the heat exchanger, and The fuel is configured to burn upward.
- each of the loop portions has a hollow rectangular shape
- the can body has a rectangular cylindrical peripheral wall portion surrounding each of the loop portions.
- the combustion gas passage is formed between the two.
- FIG. 1 is a schematic cross-sectional view showing an example of a heat exchanger to which the present invention is applied and a hot water supply device provided with the same.
- FIG. 2 is a sectional view taken along the line II-II of FIG. 1.
- FIG. 3A is a plan view showing an example of a tube module constituting a water tube for heat exchange.
- 3B is a front view thereof.
- FIG. 4 is a sectional view of a main part of the hot water supply device shown in FIG. 1.
- FIG. 5 is a sectional view taken along line VV of FIG. 2.
- FIG. 6 is a partially omitted perspective view showing an example of a spacer used in the hot water supply apparatus shown in FIG. 1;
- FIG. 7 is a flowchart showing an example of an operation procedure of a control unit of the water heater shown in FIG. 1.
- FIG. 8 is a flowchart showing another example of the operation procedure of the control unit of the water heater shown in FIG. 1.
- FIG. 9 is a flowchart showing another example of the operation procedure of the control unit of the water heater shown in FIG. 1.
- FIG. 10 is a flowchart showing another example of the operation procedure of the control unit of the water heater shown in FIG. 1.
- FIG. 11 is a cross-sectional view of a principal part showing another example of a spacer.
- FIG. 12 is a cross-sectional view of relevant parts showing another example of a spacer.
- 13A and 13B are perspective views of main parts showing another example of a spacer.
- FIG. 14A and 14B are perspective views of relevant parts showing another example of a spacer.
- FIG. 15 is a perspective view of a main part showing another example of a spacer.
- FIG. 16 is a perspective view of a relevant part showing another example of a spacer.
- FIG. 17A is a sectional view of a main part showing another example of a water pipe for heat exchange, and 17B is a left side surface part of the main part of 17A.
- 18A and 18B are cross-sectional views of a main part showing an example of making the pitch of the coiled tubular portion non-uniform.
- FIG. 19A and 19B are cross-sectional views of relevant parts showing an example in which the width of the coiled tubular portion is made non-uniform.
- FIG. 20A is a cross-sectional plan view of an essential part showing an example in which a turbulent flow generating convex portion is formed in a water pipe for heat exchange
- 20B is a cross-sectional view of XX—XX of 20A.
- FIG. 21A is a cross-sectional plan view of a main part showing another example in which a turbulent flow generating convex portion is formed in a water pipe for heat exchange
- 21B is a cross-sectional view of XXI-XXI of 21A.
- FIG. 22A is a cross-sectional plan view of an essential part showing another example in which a turbulent flow generating convex portion is formed in a water pipe for heat exchange
- 22B is a cross-sectional view of XXII-XXII of 22A.
- FIG. 23A is a cross-sectional plan view of an essential part showing another example in which a turbulent flow generating convex portion is formed in a water pipe for heat exchange
- 23B is a cross-sectional view of XXIII-XXIII of 23A.
- FIG. 24A is a cross-sectional plan view of an essential part showing another example in which a turbulent flow generating convex portion is formed in a water pipe for heat exchange
- FIG. 24B is a cross-sectional view of XXIV-XXIV of 24A.
- [25] 25A is a cross-sectional view of a main part showing an example of a configuration in which a plurality of types of water tubes for heat exchange are brought into contact
- 25B is a plan cross-sectional view of the main part.
- FIG. 26A shows another example of the configuration of contacting multiple types of water pipes for heat exchange
- FIG. 26B is a sectional view
- FIG. 26B is a plan sectional view of a main part thereof.
- FIG. 27 is a cross-sectional view of relevant parts showing another example of a configuration in which a plurality of types of water tubes for heat exchange are brought into contact with each other.
- FIG. 28 is a cross-sectional view of relevant parts showing another example of a configuration in which a plurality of types of water tubes for heat exchange are brought into contact with each other.
- FIG. 29A is a cross-sectional view of a main part showing an example in which a water pipe for heat exchange has a double-pipe structure
- 29B is a partially cutaway cross-sectional view of the same.
- FIG. 30 3OA and 30B are schematic plan cross-sectional views of main parts showing another example of the can body of the heat exchanger.
- FIG. 31 is a fragmentary cross-sectional view showing another example of the drain receiving portion of the heat exchanger.
- FIG. 32 is a fragmentary cross-sectional view showing another example of the drain receiving portion of the heat exchanger.
- FIG. 33 is a cross-sectional view of relevant parts showing another example of the connection structure of the tube modules in heat exchange.
- FIG. 34 is a schematic cross-sectional view showing another example of the heat exchanger to which the present invention is applied and a hot water supply device including the same.
- Fig. 35 is a schematic cross-sectional view showing an example of heat exchange to which the present invention is applied and a hot water supply device provided with the same.
- FIG. 36 is a sectional view of the heat exchanger shown in FIG. 35.
- FIG. 37 is a sectional view of the heat exchanger shown in FIG. 35.
- FIG. 38 is a plan sectional view of the heat exchange shown in FIG. 35.
- FIG. 39 is a cross-sectional view of a main part in FIG. 38.
- FIG. 40 is an explanatory cross-sectional view of a main part showing another example of a connection structure between a coiled tube part and a curved tube constituting a water tube.
- FIG. 41 is a schematic perspective view showing an example of a plurality of coiled tubular portions.
- FIG. 42 is a schematic perspective view showing a step of assembling the accessory to the plurality of coiled tube parts shown in FIG. 41.
- FIG. 43 is a schematic perspective view showing a step of surrounding the plurality of coiled tubular bodies and attached parts shown in FIG. 42 with a plate-shaped member.
- FIG. 44 A coil-like tubular body and its accessories shown in FIG. 42 are surrounded by a plate-like member. It is a perspective view which shows a stagnation state.
- FIG. 45 is a perspective view showing another example of heat exchange to which the present invention is applied.
- FIG. 46 is a plan cross-sectional view of main parts of the heat exchanger shown in FIG. 45.
- FIG. 47 is a schematic perspective view showing a plurality of coiled tubular portions used for manufacturing the heat exchanger shown in FIG. 45.
- FIG. 48 is a perspective view showing a state where related components are attached to the plurality of coiled tubular bodies shown in FIG. 47.
- FIG. 49 is a perspective view showing a step of surrounding a plurality of coiled tubular bodies and related components shown in FIG. 48 with a plate-shaped member.
- FIG. 50 is an exploded perspective view showing another example of the manufacturing process of heat exchange to which the present invention is applied.
- Main part plane showing another example of the header structure of heat exchange to which the present invention is applied. It is sectional drawing.
- FIG. 52 is a cross-sectional view of a portion denoted by reference numeral LII in FIG. 51.
- FIG. 53 is a sectional view taken along the line LIII in FIG. 52.
- 54A is a perspective view showing an example of a retaining member used for connection of a header
- 54B is a sectional view of LIVb-LIVb of 54A
- 54C is a sectional view of LIVc-LIVc of 54A.
- FIG. 55 is an exploded sectional view of a header structure shown in FIG. 51.
- Fig. 56 is a cross-sectional plan view of a main part showing another example of a connection structure of a plurality of curved pipes used for header connection.
- FIG. 57 is a schematic plan sectional view showing another example of the heat exchange to which the present invention is applied.
- FIG. 58 is a schematic plan sectional view showing another example of heat exchange to which the present invention is applied.
- FIG. 59 is a schematic cross-sectional view showing another example of the heat exchange to which the present invention is applied and a hot water supply device provided with the same.
- FIG. 60 is a fragmentary cross-sectional view showing another example of the hot water supply apparatus to which the present invention is applied.
- FIG. 61 is a fragmentary cross-sectional view showing another example of the hot water supply apparatus to which the present invention is applied.
- FIG. 62 is a cross-sectional view showing another example of the heat exchange to which the present invention is applied.
- FIG. 63 is a cross-sectional view of a main part in FIG. 62.
- FIG. 64 is a cross-sectional view of a principal part showing another example of the heat exchanger to which the present invention is applied.
- FIG. 65 is a fragmentary cross-sectional view showing another example of the heat exchanger to which the present invention is applied.
- FIG. 66 is a cross-sectional view of a principal part showing another example of the heat exchanger to which the present invention is applied.
- FIG. 67 is a schematic sectional view showing another example of the heat exchange to which the present invention is applied.
- FIG. 68 is a schematic sectional view showing another example of the heat exchange to which the present invention is applied.
- FIG. 69 is a cross-sectional view of main parts showing another example of a spacer used in the present invention.
- FIG. 70 is a side view of relevant parts showing another example of a means for forming a gap between the coiled tubular portions in the present invention.
- FIG. 71 is a sectional view taken along LXXI-LXXI in FIG. 70.
- FIG. 72 is a side view of relevant parts showing another example of a means for forming a gap between the coiled tubular bodies in the present invention.
- FIG. 73 is a sectional view taken along LXXIII-LXXIII in FIG. 72.
- FIG. 74 is a perspective view of the coiled tubular body shown in FIGS. 72 and 73.
- FIG. 75A is a side view of an essential part showing another example of a means for forming a gap between the coiled tubular bodies in the present invention
- 75B is a cross-sectional view of LXXV-LXXV of 75A.
- FIG. 76 is a side view of relevant parts showing another example of a means for forming a gap between the coiled tubular portions in the present invention.
- FIG. 77 is a side view of a relevant part showing another example of a means for forming a gap between coiled tubular bodies in the present invention.
- FIG. 78 is a side view of a relevant part showing another example of a means for forming a gap between the coiled tubular bodies in the present invention.
- FIG. 79 is a cross-sectional view of main parts showing another example of the means for closing the gap above the tubular lap winding structure in the present invention.
- FIG. 80 is a cross-sectional view of a main part showing another example of the means for closing the gap above the tubular lap winding structure in the present invention.
- FIG. 81 is a cross-sectional view of a principal part showing another example of a means for closing a gap above a tubular body wrapped structure in the present invention.
- FIG. 82 is an explanatory cross-sectional view of a main part showing another example of a means for closing a gap above a tubular wrap-around structure according to the present invention.
- FIG. 83A is a plan sectional view showing another example of the heat exchange to which the present invention is applied, and 83B is a sectional view taken along LXXXIII-LXXXIII of 83A.
- FIG. 84 is a schematic sectional view showing another example of the hot water supply apparatus to which the present invention is applied.
- FIG. 85 is a schematic plan sectional view of the water heater shown in FIG. 84.
- FIG. 86 is a partially omitted perspective view showing another example of the heat exchanger to which the present invention is applied.
- FIG. 87 is a cross-sectional view of a main part of the heat exchange shown in FIG. 86.
- FIG. 88 is a cross-sectional view showing an example in which a plurality of coiled tubular portions are brought into contact with each other.
- FIG. 89 is a fragmentary cross-sectional view showing another example of the heat exchanger to which the present invention is applied.
- FIG. 90 is a plan sectional view showing another example of the heat exchanger to which the present invention is applied.
- FIG. 91 is a sectional view taken along the line XCI—XCI in FIG. 90.
- FIG. 92 is a schematic sectional view showing another example of the heat exchanger to which the present invention is applied and a hot water supply device provided with the same.
- FIG. 93 is an explanatory view showing one example of a conventional technique.
- FIG. 1 shows an example of a heat exchanger to which the present invention is applied and a hot water supply apparatus including the same.
- 2 to 6 show the heat exchanger shown in FIG. 1 and a configuration related thereto.
- the hot water supply apparatus B1 of the present embodiment includes a combustor 1, a bottom casing 80, an exhaust duct 81, and a control unit 89 in addition to heat exchange.
- the combustor 1 is, for example, a reverse-combustion type in which kerosene is used as fuel to burn the vaporized gas downward, or kerosene is injected downward to burn.
- a substantially box-shaped can body 10 whose lower part is opened is placed, and the combustor 1 is arranged and supported in the can body 10.
- a blower fan 13 for supplying combustion air downward into the can body 10 is provided at an upper portion of the can body 10. The blowing action of the blower fan 13 is Within 1, it helps to make the combustion gas advance through a certain path described later.
- a fuel supply device 12 that supplies fuel to the combustor 1 and that can adjust the supply amount is also provided on the can body 10.
- the control unit 89 is configured by a microcomputer having a CPU and a memory attached thereto.
- the control unit 89 determines the number of combustions of the combustor 1 in accordance with certain conditions, and drives the combustor 1 with the determined number of combustions in the brackets. It controls the amount of fuel supplied to the fan 1 and the number of revolutions of the motor M of the blower fan 13. The details will be described later.
- the heat exchange includes a can 2 and a water pipe 6 for heat exchange.
- Both the can body 2 and the water pipe 6 are made of stainless steel, so that they do not easily corrode due to the drain generated when latent heat is recovered from the combustion gas using the water pipe 6. Being! When the latent heat is recovered from the combustion gas, the water vapor in the combustion gas condenses to generate drain (condensed water). This drain generally has a strong acidity of about PH3 which has absorbed sulfur oxides / nitrogen oxides in the combustion gas. For this reason, the can 2 and the water pipe 6 are made of a material having excellent acid resistance.
- a drain receiving portion 26, a partition member 19, and a spacer 18, which will be described later, are also made of stainless steel.
- the can 2 of the heat exchanger A1 is connected to a lower portion of the can 10 and has a substantially cylindrical peripheral wall portion 20.
- a combustor opening 22A and a combustion gas outlet 22B are formed in the upper and lower portions of the can body 2.
- the combustor opening 22A is used as a portion for introducing combustion gas from the combustor 1 or as a portion for allowing the combustor 1 to enter the can body 2 and be attached thereto. In the present embodiment, a part of the combustor 1 enters the can 2 through the combustor opening 22A.
- the can body 2 includes a water inlet chamber 71 having a water inlet 71a, a water outlet channel 72 having a water outlet 72a, and a common chamber 73 as water passage means for the water pipe 6.
- These chambers 71 to 73 are formed, for example, by welding a suitable casing member to the outside of the peripheral wall portion 20. The specific connection structure between the chambers 71 to 73 and the water pipe 6 will be described later.
- the water tube 6 has a coiled tube portion 60 disposed inside the can 2.
- the coiled tube body portion 60 has a configuration in which spiral loop portions 60a connected in a plurality of stages in the vertical height direction of the can body 2 are arranged with a gap 61 therebetween. Each loop portion 60a is flat.
- Coiled tube The combustor 1 is located above the space 35 surrounded by the body 60.
- a combustion gas passage 36 extending in the height direction of the can 2 is formed between the outer periphery of the coiled tube 60 and the peripheral wall 20 of the can 2.
- each loop portion 60a has a substantially annular shape
- the peripheral wall portion 20 of the can 2 has a substantially cylindrical shape.
- the width L2 of each portion of the combustion gas passage 36 in the radial direction of the can 2 is substantially uniform.
- the water pipe 6 is configured by providing a plurality of tubular modules 62, each having the same size and shape and being modularized, stacked in the can body 2 in a plurality of stages. More specifically, as shown in FIGS. 3A and 3B, the tube module 62 is formed by a plurality of (for example, five) spirally connected loop portions 60a (for example, five) which are stacked in the thickness direction thereof. have. Connection plugs 62c are provided at both ends 62a and 62b of this portion.
- the tube module 62 is formed of a flat stainless steel tube having a width L1 larger than the thickness tl over the entire length region excluding the portion where the connection plug 62c is provided. As an example of those specific numerical values, the thickness tl is about 5 mm, and the width L1 is 25 mmfe degree.
- the water pipe 6 has four tube modules 62 (62A to 62D) stacked in the vertical direction, and one end 62a thereof is connected to the common chamber 73. It has a supported configuration.
- the number of the tubular module 62 is to facilitate understanding, and the specific number is not limited to this.
- the other end portions 62b of the two lower tube modules 62C and 62D are connected to and supported by the water inlet chamber 71.
- the other ends 62b of the two pipe modules 62A and 62B closer to the upper stage are connected to and supported by the tapping chamber 72.
- the water that has entered the water inlet 71a flows from the water inlet chamber 71 through the tube modules 62C and 62D into the common chamber 73, and then flows into the tube modules 62A and 62B from one end 62a.
- the hot water is supplied to a hot water supply chamber 72 through a hot water outlet 72a.
- a partition member 19 and a plurality of spacers 18 are provided in the heat exchanger A1.
- the partition member 19 is for closing the lower part of the space 35, and has a disk shape, for example.
- This partition member 19 is, for example, covered with a heat insulating material on the surface of a metal plate like a partition member 19 described in an embodiment to be described later shown in FIGS. 35 to 39. It is possible to adopt a laminated structure or a configuration in which the upper surface portion to which the combustion gas is applied is depressed in a concave shape.
- the mounting of the partition member 19 is performed by, for example, welding the partition member 19 to the water pipe 6.
- the partition member 19 may be supported using an appropriate stay (not shown) attached to the bottom of the can body 2.
- each spacer 18 has, for example, an elongated rectangular base portion 18a and a plurality of protruding portions 18b projecting from the base portion 18a in a comb shape.
- the spacer 18 can be manufactured, for example, by machining a metal or by welding a plurality of metal plates. Further, it can be formed by cutting and raising a metal plate. However, a specific example thereof will be described later.
- the plurality of projecting portions 18b are inserted between the plurality of loop portions 60a, thereby forming a gap 61, and the dimension L3 is equal to the thickness L3 of each projecting portion 18b. It is defined the same.
- each of the plurality of protrusions 18b is the same, and as a result, the dimensions of the gaps 61 in the plurality of steps are also the same in various places. However, as will be described later, even if the dimensions of the gaps 61 in the plurality of stages are not uniform, there is no force.
- the thickness tl of the water pipe 6 is, for example, about 5 mm
- the dimension L3 of the gap 61 is, for example, about 0.8 mm to 2.0 mm. 2
- the plurality of spacers 18 are provided at substantially equal intervals, for example, at three locations on the outer periphery of the coiled tubular body 60. As shown in FIG. As a means for ensuring the attachment of each spacer 18, for example, each spacer 18 may be welded to an appropriate location in the coiled tubular body 60 or the can 2.
- the heat exchange A1 includes a drain receiving portion 26.
- the drain receiving portion 26 is for receiving the drain flowing down from the water pipe 6 and is located below the coiled tubular portion 60.
- the drain receiving portion 26 has a ring shape in which a combustion gas outlet 22B is formed at the center, and the outer peripheral edge thereof is welded to the peripheral wall portion 20 of the can body 2.
- the drain receiving portion 26 has an inclined surface 260 whose height decreases as it approaches the combustion gas outlet 22B from the outer peripheral edge thereof, and an upright wall 261 rising upward at the inner peripheral edge of the combustion gas outlet 22B.
- the drain is collected in a concave portion 262 formed by the upright wall 261 and the inclined surface 260.
- This drain receiver 2 A discharge port 26b is provided at the bottom of 6, and a pipe 82 for discharging a drain to the outside of the can 2 and the bottom casing 80 is connected to the outlet 26b of the bracket.
- the bottom casing 80 has a substantially rectangular parallelepiped shape with a hollow inside.
- the heat exchange A1 and the exhaust duct 81 are mounted side by side. Openings 80a and 80b are formed in the upper wall of the bottom casing 80 so as to communicate with the combustion gas outlet 22B of the heat exchanger A1 and the bottom opening of the exhaust duct 81, respectively.
- the combustion gas flowing out of the combustion gas outlet 22B of the heat exchanger A1 toward the bottom casing 80 also passes through the bottom casing 80, and the combustion gas passes through the bottom casing 80 to the exhaust duct 81 from below. Proceed in the direction.
- the combustion gas then passes through the exhaust duct 81, and is discharged to the outside as exhaust gas from the exhaust port 8la.
- the exhaust duct 81 is provided with a sound absorbing material (not shown) such as glass wool inside, and plays a role as a muffler for reducing exhaust noise.
- the coiled tubular portion 60 surrounds the space 35 as a combustion chamber, and performs the combustion gas power heat recovery by the action of passing the combustion gas through the gaps 61 in a plurality of stages.
- Each of the loop portions 60a of the coil-shaped tube portion 60 is formed of a flat tube, and has a large width L1, so that the connection between the loop portion 60a and the combustion gas when the combustion gas passes through the gap 61. The contact time becomes longer.
- the combustion gas power is also the amount of heat recovered by the coiled tubular portion 60. Increase.
- the gap 61 can be set to the optimal size for heat transfer by using the spacer 18.
- the combustion gas also transfers heat to the coiled tube portion 60 as the combustion gas travels down the combustion gas passage 36. For this reason, the heat exchange efficiency of the heat exchange is extremely high, and the hot water supply capacity is improved.
- the coiled tubular body 60 is formed of a flat tube, the effect of increasing the amount of water in the water pipe 6 can be obtained in addition to increasing the heat exchange efficiency as described above. That is, since the thickness tl of each loop portion 60a is small, the overall height of the coiled tube portion 60 is suppressed from being large and bulky, and the number of loop portions 60a is increased to reduce the amount of water in the water pipe 6. You can do more. In particular, it is possible to increase the amount of water by increasing the width L1 of the flat tube.
- the heat exchange efficiency is increased without using a finned tube as the water pipe 6, and the structure of the water pipe 6 is simple. Therefore, despite the fact that the heat exchanger A1 is made of stainless steel, its manufacturing cost can be made relatively inexpensive.
- the water pipe 6 is formed by using a plurality of pipe modules 62 having a uniform shape and size, so that the water pipe 6 is compared with, for example, a case where a single water pipe is formed in a continuous spiral. It is possible to make the manufacturing cost lower. Further, when the number of the tube modules 62 is changed, the total length or the capacity of the water tube 6 is also changed, so that the specification change of the heat exchange becomes easy.
- the combustion gas generates a drain when performing heat exchange by contacting the coiled tube portion 60.
- the drain flows down from the coiled tube portion 60, it is appropriately received by the drain receiving portion 26 and discharged to the outside via the pipe 82. Therefore, if a large amount of drain stays in the can 2, there is no problem.
- the inside of the bottom casing 40 is not contaminated by the drain. Since the material of the portion that may be in contact with the drain is made of stainless steel, corrosion due to contact with the acidic drain is also prevented.
- the water pipe 6 is made of stainless steel, for example, well water containing a component that corrodes copper and iron can be supplied to the water pipe 6 and used. Applications are wide.
- the number of combustions when driving combustor 1 can be determined by a conventionally known method.
- the amount of water in the water pipe 6 can be increased, and the water pipe 6 is made of stainless steel having a lower thermal conductivity than copper, for example. Therefore, in the hot water supply apparatus B1, the control unit 89 uses any of the methods shown in FIGS. 7 to 9 as a means for improving hot water supply performance, such as quickly discharging hot water at the early stage of driving the combustor 1. This processing and the processing shown in FIG. 10 are performed. This will be described below.
- the control unit 89 detects and monitors the water temperature WT in the water pipe 6 irrespective of whether the combustor 1 is driven or not driven. (Sl).
- the water temperature WT can be detected by using one or a plurality of temperature sensors (not shown) provided at appropriate places of the heat exchanger A1 such as inside the can body 2.
- the temperature sensor for example, a sensor using a thermistor is used.
- the control unit 89 drives the combustor 1 to perform the preliminary combustion (S2: YES, S3 ).
- preliminary combustion is a concept that corresponds to combustion for performing hot water (main combustion), and simply refers to raising the temperature of water stored in the water pipe 6. Combustion performed for the purpose. This pre-combustion is performed by weakening the heat of the combustor 1 more than in the case of the main combustion. However, instead of this, the preliminary combustion may not be activated by the same thermal power as the main combustion.
- the pre-combustion is performed to increase the water temperature WT, and when the water temperature WT becomes equal to or higher than a predetermined second set temperature T2, the control unit 89 terminates the pre-combustion at that time (S4: Y ES, S5).
- the second set temperature T2 is higher than the first set temperature T1.
- the pre-combustion is started only when the water temperature WT slightly decreases the temperature, and the pre-combustion is terminated only after the water temperature W ⁇ ⁇ slightly increases, and the pre-combustion is turned on and off. Since hunting phenomena occur frequently, it is desirable to take measures to prevent such phenomena.
- the hot water supply device B1 is provided with a remote control operation panel (not shown). Preferably, a switch operation of the remote control operation panel is performed.
- the first and second set temperatures Tl and T2 are configured to be changeable by a user. After the pre-combustion is stopped, when the MOQ is turned on, the mode shifts to the main combustion mode at that point (S6: YES, S7) 0
- MOQ is necessary for the water heater B1 to perform the tapping operation
- the minimum water flow through the water pipe 6 and the MOQ is turned on means that the water flow through the water pipe 6 exceeds the minimum water flow! /
- the water temperature WT is maintained in a temperature range from the first set temperature T1 to the second set temperature T2, and can be kept relatively warm. Therefore, when the main combustion for starting hot water is started, hot water can be quickly discharged.
- control unit 89 detects water temperature WT as in the case shown in FIG. 7 (S11). If the water temperature WT is lower than the predetermined first set temperature T1 (S12: YES), the control unit 89 determines the amount of heat required to raise the water temperature WT to the predetermined second set temperature T2. Is calculated, and the combustion conditions necessary to obtain this calorific value are determined (S13, S14). The conditions for this combustion are the number of combustions and the combustion time.
- control unit 89 causes the combustor 1 to perform pre-combustion with the above-mentioned number of combustions, and thereafter, when the pre-combustion satisfies the above-described combustion condition, stops the pre-combustion at that stage (S15, S16: YES) , S17).
- steps S18 and S19 are the same as steps S6 and S7 in FIG.
- the water temperature WT is maintained in the temperature range up to the first set temperature T1 power and the second set temperature T2, and is set to a relatively warm temperature. I can put it. Therefore, when the main combustion for tapping is started, hot water can be discharged at an early stage.
- the control unit 89 calculates the reference combustion number N1, Based on the reference combustion number N1 and a preset correction coefficient ⁇ 1, a combustion number for initial drive ⁇ 2 is obtained (S22, S23).
- the reference combustion number N1 is a combustion number that is considered to be optimal at a time other than the initial operation of the combustor 1, and is determined based on the inlet water temperature, the target outlet temperature, and the target outlet amount.
- As a calculation program for obtaining the reference combustion number N1 it is also possible to use the program used in the existing hot water supply apparatus as it is.
- the combustion number N2 is a combustion number to be used only in the initial stage of driving the combustor 1, and is obtained by, for example, the following equation:
- the correction coefficient ⁇ 1 is data previously set and input to the memory of the control unit 89, and is a value larger than 1. Therefore, there is a relationship of ⁇ 2> 1.
- the correction coefficient ⁇ 1 can be increased or decreased by, for example, a switch operation of a remote control operation panel. This is the same for the other correction coefficients ⁇ 2 and y3 described later.
- the control unit 89 drives the combustor 1 with the initial drive combustion number N2 (S24).
- the control unit 89 switches the number of combustions of the combustor 1 to the reference number of combustions N1 at that time. (S25: YES, S26).
- the combustion is stopped (S27: YES, S28) 0
- the combustor 1 in the initial stage of driving of the combustor 1, the combustor 1 is driven by the driving initial combustion number N2 having a thermal power larger than the reference combustion number N1. Therefore, the time required for the actual tapping temperature to reach the target tapping temperature is shortened. Also, when the tapping temperature reaches or approaches the target tapping temperature, the number of combustions for the initial drive is switched from N2 to the reference number of combustions N1, so it is not desirable to overheat after that. The hot water that meets the conditions of (1) can be continued appropriately.
- the timing at which the combustion is switched from the drive initial combustion number N2 to the reference combustion number N1 is not limited to the timing when the tapping water temperature rises to the predetermined temperature. For example, it is also possible to adopt a configuration in which the above-described switching is performed when a predetermined time set by a timer elapses at the start of tapping or when the actual tapping amount exceeds a predetermined amount.
- the processing procedure shown in Fig. 10 is for dealing with a case where the amount of water entering the water pipe 6 or the set value of the target hot water temperature changes suddenly during hot water tapping.
- the control unit 89 drives the combustor 1 with the reference combustion number N1 (S31, S2).
- N1 the reference combustion number
- FIGS. 7 to 9 If the amount of water entering the water pipe 6 or the set point power of the target outlet temperature changes suddenly beyond the predetermined width while the combustion with the reference combustion number N1 is being executed continuously (S33: YES) , The control unit 89 responds Change the reference combustion number Nl to the corrected combustion number to respond quickly.
- the control unit 89 determines the number of combustions N3 for sudden change in driving conditions. And the combustor 1 is driven with this combustion number N3 (S35, S36). 0
- ⁇ 2 is a correction coefficient preset and input to the memory of the control unit 89, and is a value larger than 1. Therefore, the number of combustion # 3 is larger than the standard number of combustion N1.
- ⁇ 3 is a correction coefficient input to the memory like the correction coefficient ⁇ 2, but is a value smaller than 1. Therefore, the combustion number # 4 is smaller than the standard combustion number N1.
- the control unit 89 sets the temperature at the time when the hot water temperature reaches the target hot water temperature or a predetermined temperature range close to the target hot water temperature.
- the combustion number of the combustor 1 is returned to the reference combustion number N1 (S37: YES, S43: YES, S38). Thereafter, when the MOQ is turned off, the combustion is stopped (S39: YES, S40).
- the reference combustion number which is the original number of combustion
- the heating speed is increased because the number of combustion N3 for sudden change in driving conditions is larger than N1. Therefore, it is possible to prevent hot water having a temperature lower than the target hot water temperature from being discharged.
- combustion for driving conditions with sudden change in driving power whose thermal power is smaller than the reference combustion number N1 is performed. Since the number is N4, so-called post-boiling is suitably suppressed. Therefore, it is possible to prevent more hot water and hot water from being discharged than the target hot water temperature.
- the control as shown in Fig. 10 can be applied to the case where the set values of the water input amount and the target hot water temperature change suddenly, and also to the case where the input water temperature changes suddenly.
- the same processing as in steps S35 and S36 described above is performed, while the incoming water temperature decreases.
- the same processing as in steps S41 and S42 described above may be performed.
- the timing of switching from the number of combustions N3 and N4 to the number of combustions N1 is, for example, a time when a predetermined time has elapsed, as described in step S25 of FIG.
- FIG. 11 to FIG. 92 show another embodiment of the present invention.
- the same or similar elements as those of the above embodiment are denoted by the same reference numerals as those of the above embodiment.
- a plurality of spacers 18 A divided in the height direction are attached to the coiled tube portion 60 of the water tube 6.
- Each spacer 18A has a smaller number of protruding portions 18b in which the length of the base portion 18a is shorter than that of the spacer 18 shown in FIGS. According to such a configuration, it is not possible to collectively set all the dimensions of the gap 61 in the plurality of stages of the coiled tubular body 60 by using only one spacer 18A, but to some extent This is convenient because it is possible to collectively set the dimensions of the gap 61 of the number of steps. If the thicknesses t2 and t3 of the projecting portions 18b of the two spacers 18A are different from each other, it is suitable for making the dimensions of the gaps 61 of a plurality of steps uneven as described later.
- a plurality of spacers 18B formed in a flat plate shape or a chip shape are individually inserted between the plurality of loop portions 60a.
- the gap 61 having a desired size can be appropriately formed by the spacer 18B.
- the spacer is manufactured using a cut-and-raised force of a metal plate.
- a notch 18c is provided in the base portion 18a, and a portion initially surrounded by the bracket notch 18c is raised up, thereby forming a protruding portion 18b. It has a configuration. According to such a configuration, it is possible to easily manufacture the spacer 18C with a single sheet metal, and it is suitable for reducing the manufacturing cost.
- base portion 18a has an L-shaped cross section having first and second plate portions 181, 182.
- the notch 18c is formed in a series across the first and second plate portions 181,182.
- the protruding portion 18b formed by cutting and raising is separated from the second plate portion 182, and a part thereof protrudes from the first plate portion 181.
- the spacer 18C shown in FIG. 13A when the interval P1 between the plurality of protrusions 18b is small, it is difficult to increase the protrusion dimension L4 of each protrusion 18b.
- the protrusion dimension L5 of each protrusion 18b which is not related to the interval P1, can be increased.
- a notch 18c is provided in the base 18a, and the portion initially surrounded by the bracket notch 18c is raised in the horizontal direction, thereby forming the protruding portion 18b. It has the structure which was done. According to such a configuration, the protrusion dimension L6, which is not related to the interval PI between the plurality of protrusions 18b, can be increased. Although the width L7 of each protrusion 18b is reduced, there is no problem that the width L7 does not need to be increased.
- the spacer 18F shown in FIG. 14B has an L-shaped cross section having first and second plate portions 181 and 182 as a base 18a, similarly to the spacer 18D in FIG. 13B. Used. A notch 18c for cutting and raising the protruding portion 18a is formed across the first and second plate portions 181 and 182. According to such a configuration, it is possible to further increase the protrusion dimension s8 of each protrusion 18b while suppressing an increase in the overall width of the base 18a.
- the spacer 18G shown in Fig. 15 has a plurality of protruding portions 18b, for example, four sets cut out from the base portion 18a, and four sets of protruding portions 18b are arranged diagonally. According to such a configuration, a large number of protrusions 18b can be arranged in a comb-teeth shape with good space efficiency while suppressing the entire width of the spacer 18 from increasing.
- the stepped portion 180 is formed by pressing the protruding portion 18b. According to such a configuration, the maximum thickness of the protruding portion 18b can be made larger than the thickness of the base portion 18a. If the heights of the plurality of steps 180 are made different from each other, it is suitable for making the dimensions of the gaps 61 of the plurality of steps non-uniform as in the embodiment described later.
- each of the loop portions 60 of the coiled tubular portion 60 A convex portion 69 is provided on the outer surface of a.
- the adjacent loop portions 60a in the height direction are in contact with each other via the convex portion 69.
- a gap 61 having a desired size can be formed between the loop portions 60a without using a spacer. Therefore, the work of installing the spacer is not required, and the work of assembling the heat exchanger becomes easy.
- the specific shape, size, and number of the convex portions 69 are not limited.
- the dimensions of the gaps 61 in the plurality of steps of the coiled tubular body 60 are not uniform. More specifically, the dimension L9 of the gap 61 in the lower region of the coiled tubular body 60 is smaller than the size L10 of the gap 61 in the upper region. Since the combustor 1 burns downward, the temperature distribution in the space 35 tends to be higher in the lower region than in the upper region. On the other hand, if the dimension L9 of the gap 61 in such a portion that easily becomes high in temperature is reduced, the high-temperature combustion gas and the coiled tube portion 60 are sufficiently contacted to reduce the heat transfer amount. It is possible to do much.
- the dimension L11 of the gap 61 is gradually reduced from the upper part to the lower part of the coiled tubular body 60.
- an operation similar to that of the previous embodiment shown in FIG. 18A can be obtained.
- the width of the gap 61 may be different in three stages, large, medium, and small, or in more stages.
- the lower part of the space 35 is not necessarily hotter than the upper part, and the upper part may be hotter. In such a case, contrary to the above-described embodiment, the configuration may be such that the upper gap 61 of the coiled tubular body 60 is smaller and the lower gap 61 is larger.
- the width L12 of the flat tube forming the coiled tubular body 60 is larger in the lower region than in the upper region of the coiled tubular body 60. Even with such a configuration, the degree of contact of the high-temperature combustion gas below the inner region of the coiled tube portion 60 with the lower region of the coiled tube portion 60 is increased, and it is more preferable to increase the heat transfer amount. It becomes.
- the width L13 of the flat tube is different from that of the coiled tube portion 6 It gradually increases from the top to the bottom of 0. With such a configuration, the same operation as the embodiment shown in FIG. 19A can be obtained. Even when the width of the flat tube is made non-uniform, various modes can be adopted similarly to the case where the size of the gap 61 is made non-uniform. Of course, depending on the temperature distribution of the combustion gas, the upper portion of the coiled tubular portion 60 may be wider than the lower portion.
- a plurality of protrusions 68 projecting toward the inside of the loop 60a of the coiled tube 60 are provided at appropriate intervals. . According to such a configuration, the water passing through the loop portion 60a becomes a turbulent flow, and the coefficient of the inner membrane of the pipe increases, so that the heat exchange efficiency is further improved.
- FIGS. 21 to 24 show another example in which a plurality of protrusions 68 are provided in the coiled tubular body 60 to generate a turbulent flow inside.
- a plurality of convex portions 68 are provided in a staggered arrangement on each of the upper surface and the lower surface of the loop portion 60a.
- the convex portions 68 provided on the upper surface and the lower surface of the loop portion 60a are in opposing contact or approaching each other.
- a plurality of convex portions 68 that are opposed to each other or approach each other in pairs are provided in a staggered arrangement.
- the plurality of convex portions 68 provided in a staggered arrangement on the upper surface and the lower surface of the loop portion 60a are displaced so that they do not face each other.
- there are various modes for the arrangement of the convex portions 68 for generating the turbulent flow and the present invention may adopt any of the modes.
- the heat exchange shown in Fig. 25A and Fig. 25B is a so-called one-can, two-circuit system including one water pipe 6A and two water pipes 6B having different hot water supply destinations.
- Water pipe 6A is for hot water supply to a kitchen, for example, whereas water pipe 6B is for hot water supply to a bath, for example.
- the loop 60a 'of the water pipe 6A is sandwiched between and contacts the loops 60a "of the two water pipes 6B.
- a total of three loops 60a', 60a" are provided.
- a pair is formed, and a gap 61 is formed between these pairs to allow the combustion gas to pass.
- the header for the water pipe has a water inlet chamber 71A and a hot water outlet chamber 72A to which both ends 62a 'and 62b' of a plurality of pipe modules 62 constituting the water pipe 6A are connected. , And common char 73A.
- the header also includes a water inlet chamber 71B, a hot water outlet chamber 72B, and a common chamber 73B to which both ends 62a ", 62 of a plurality of tube modules 62 constituting the water pipe 6B are connected.
- a 1-can 2-circuit heat exchanger water is supplied to each of the two types of water pipes, and for example, hot water may have to be supplied to the kitchen and bath simultaneously.
- the heat exchange or hot water supply apparatus of the present invention is suitable for increasing the amount of hot water with high heat exchange efficiency as described above. Optimal.
- the loop portions 60 a, 60 a ”of the two types of water pipes 6 A, 6 B form a pair, and are arranged in the radial direction of the coiled tubular body 60.
- the structure of the header portion for connecting the water pipes 6A and 6B is different from that of the previous embodiment in the positional relationship between the respective portions.
- the loop 60a "of the two water pipes 6B surrounds the entire circumference of the loop 60a 'of the water pipe 6A and is in contact with the other. It's been! /
- a round pipe is used as the water pipe 6A, and the water pipe 6B is formed so as to surround a substantially half-circumferential area of the water pipe 6A and come into contact therewith.
- various modes can be adopted as the mode in which the two types of water pipes 6A and 6B are brought into contact.
- the contact area is increased, the effect of preventing the boiling of water in an unused water pipe by increasing the amount of heat transfer is increased, and thus such a configuration is desired.
- the water pipe has a double pipe structure having an inner pipe 6A and an outer pipe 6B.
- Water must flow through the inner pipe 6A and through the gap between the inner pipe 6A and the outer pipe 6B.Therefore, water inlet chambers 71A and 21B to which both ends are connected, and hot water
- the chambers 72A and 22B and the common chambers 73A and 23B also have a double structure.
- the peripheral wall portion 20 of the can body 2 has a substantially semi-cylindrical shape or a cylindrical shape close thereto.
- the peripheral wall portion 20 of the can body 2 has a rectangular prism shape.
- the loop portion 60a of the water pipe 6 is substantially annular.
- the width L14 force of each portion of the combustion gas passage 36 is not uniform, and a wide portion and a narrow portion are provided.
- the width of the combustion gas passage 36 is substantially uniform at various places, and the combustion gas passage 36 While the flow rate and the flow rate of the combustion gas at each of the above-mentioned locations are made substantially constant, in the present embodiment, the flow rate and the flow rate of the combustion gas in the combustion gas passage 36 are deviated so that the actual use condition of the hot water supply device is changed. It is possible to adapt to. Further, in the present embodiment, since both ends 62a and 62b of the water pipe 6 and the vicinity thereof have a structure which relatively traverses the combustion gas passage 36 with a relatively long dimension, these parts are used for heat exchange. Is also possible.
- an upright wall 263 formed on the outer periphery of the drain receiving portion 26A is separated from the peripheral wall portion 20 of the can body 2, and a gap portion serving as a combustion gas outlet is provided therebetween. 36a are formed.
- the combustion gas that has proceeded downward in the combustion gas passage 36 can be passed through the gap 36a and the combustion gas outlet 22B to be advanced into the bottom casing 80. Therefore, for the purpose of, for example, reducing the overall height, the gap dimension L30 between the coiled tube portion 60 and the drain receiving portion 26A is reduced.
- the combustion gas can be smoothly discharged using the gap 36a.
- a gap 36a is formed between the drain receiving portion 26B and the peripheral wall portion 20, while the drain receiving portion 26B corresponds to the above-described combustion gas outlet 22B. No part is provided. Even with such a configuration, by using the gap 36a as a combustion gas outlet, smooth discharge of combustion gas is possible.
- the partition member 19 is disposed above the lower end of the space 35, and the combustion gas generated by the combustor 1 is discharged below the partition member 19. It does not proceed as it is. As described above, in the present invention, the lower end portion of the space 35 is directly closed by the partition member 19.
- a combustion gas stopper 29 for closing the bottom of the combustion gas passage 36 is provided below the peripheral wall 20 of the can body 2.
- the combustion gas stopper 29 has a ring shape, and has an inclined surface 29a whose height decreases toward the center of the can body 2 in the radial direction.
- the inclined surface 29a also serves as a guide for causing the force of the combustion gas outlet 22B to flow down below the drain.
- a combustion gas outlet 22B is provided with a drain receiving portion 26C for receiving a drain from which the force also drops.
- the upper region HT1 above the partition member 19 of the coiled tubular body 60 is used for primary heat exchange, and the lower region HT2 below it is used for secondary heat exchange.
- Use Can More specifically, the combustion gas generated in the space 35 by driving the combustor 1 passes through the gap 61 in the upper region HT1, flows into the combustion gas passage 36, and then passes through the gap 61 in the lower region HT2. To the combustion gas outlet 22B. According to such a configuration, the sensible heat of the combustion gas can be recovered in the upper region HT1, and the latent heat can also be recovered in the lower region HT2.
- Figs. 35 to 92 show an embodiment of a heat exchanger including a tubular wrap-around structure, and matters related thereto.
- the contents of these embodiments include technical matters applicable to a heat exchanger using a flat tube as described above.
- Such technical items are also applicable to heat exchangers using flat tubes.
- Fig. 35 shows another example of the heat exchanger to which the present invention is applied and a hot water supply device provided with the same.
- 36 to 39 show the heat exchanger of FIG. 35 and a configuration related thereto.
- the heat exchanger 8 of the present embodiment includes a can body 2, a plurality of water pipes 4, a pair of headers 5 for water input and tapping, and a partition member 19. .
- the plurality of water pipes 4 form a tubular wrapped structure SC in which the plurality of coiled tubular portions 40 are arranged in a wrapped manner. Further, as the water pipe 4, a round pipe is used unlike the above-described embodiment.
- the can body 2 includes a substantially cylindrical peripheral wall portion 20, and a pair of cover members 21A and 21B attached to the upper and lower portions of the peripheral wall portion 20. These are made of stainless steel, for example, as in the previous embodiment. As described later, the peripheral wall portion 20 is formed by bending a substantially rectangular stainless plate into a cylindrical shape, and then joining a pair of edges 20a shown in FIG. A projecting piece 20a 'projecting outward in the radial direction of the peripheral wall portion 20 is formed on each end edge 20a by bending, and these projecting pieces 20a' are overlapped and welded. One or a plurality of brackets 23 for attaching the can 2 to another desired portion are welded to the lower outer peripheral surface of the peripheral wall portion 20.
- the cover body 21A is substantially disc-shaped with a combustor opening 22A formed in the center.
- the opening 22A for the combustor is the In the same manner as above, it is used as a combustion gas inlet for introducing the combustion gas generated in the combustor into the can 2, or as a part for entering a part of the combustor into the can 2 and attaching it. Is done.
- the combustor opening 22A is a burring hole having an annular wall 220 protruding downward at the periphery thereof.
- the cover 21A is fitted into the upper opening of the peripheral wall 20 and is welded to the peripheral wall 20.
- a plurality of convex portions 25a protruding toward the inside of the can 2 are formed on the inner peripheral surface near the upper end of the peripheral wall portion 20, and the cover body 21A is positioned by contacting these convex portions 25a. Is planned.
- the plurality of convex portions 25a are formed by applying a pressing force to the peripheral wall portion 20, and are provided at appropriate intervals in the circumferential direction of the peripheral wall portion 20.
- the cover body 21B has a combustion gas outlet 22B formed at the center thereof, and has a substantially disk shape similar to the cover integral 21A.
- a plurality of protrusions 25b similar to the above-described protrusions 25a are formed on the inner peripheral surface near the lower end of the peripheral wall portion 20, and the cover body 21A is fitted into the lower opening of the peripheral wall portion 20 to form a plurality of protrusions. Is welded to the peripheral wall portion 20 in a state of contacting the convex portion 25b.
- the combustion gas outlet 22B is formed as a burring hole similar to the combustor opening 22A, and an annular wall 221 protruding upward is formed on the periphery thereof.
- a drain receiving portion 26D capable of receiving a drain dropped from the water pipe 4 is formed.
- the drain receiving portion 26D includes an annular wall 221, a lower portion of the peripheral wall portion 20, an annular space 26a formed therebetween, and a bottom thereof.
- a drain outlet 26b for discharging the drain received by the drain receiving portion 26D to the outside of the can 2 is formed in the cover 21B.
- the water pipe 4 includes a coil-shaped pipe portion 40 disposed in the can 2, and a pair of curved pipes 41 connected to both ends 400 thereof.
- the heat exchanger of the present embodiment includes a total of three water tubes 4, each of which has a coiled tube portion 40 formed by using a spiral tube, and has a hollow circular spiral loop portion 40 a. It has a configuration in which a plurality of layers are stacked in the height direction of the can body 2. However, the winding diameters of the plurality of coiled tube portions 40 are different from each other, and the plurality of coiled tube portions 40 are concentrically or substantially concentrically formed in the tube overlap winding structure SC. It is constituted by being arranged.
- the plurality of loop portions 40a are arranged in the horizontal direction in addition to the height direction.
- the plurality of curved pipes 41 of the water pipe 4 serve as a joint pipe that connects the plurality of coiled pipe sections 40 and the header 5. It is. Steps 410a, 410b having tapered surfaces are formed at both end portions 41a, 41b of each curved tube 41, and a portion closer to the tip than these step portions 410a, 410b has an outer diameter larger than a middle portion in the longitudinal direction. Has a small diameter.
- Each curved tube 41 is connected to the coiled tube portion 40 by fitting a small diameter portion of one end portion 41a to the end portion 400.
- the fitting direction of the small diameter portion and the end portion 400 is a tangential direction of the loop portion 40a of the coiled tubular portion 40.
- the tapered surface of the step portion 410a is in contact with the end surface of the end portion 400, and this contact portion is welded or brazed.
- a connecting means between the water pipe 4 and the curved pipe 41 for example, a means as shown in FIG. 40 can be used.
- the foremost end portion of one end 41a of the curved pipe 41 is subjected to expansion processing, and this part is fitted to the end 400 of the water pipe 4.
- appropriate connection by fitting the water pipe 4 and the curved pipe 41 is possible.
- the plurality of curved tubes 41 are inserted through a plurality of openings 200 provided near the upper and lower ends of the peripheral wall portion 20, and the portion of the curved tube 41 near the other end 41b is close to the can body 2. It protrudes outside.
- the plurality of curved pipes 41 have different bending radii and overall lengths, and the arrangement pitch P3 of the portion penetrating the peripheral wall 20 and the other end 41b is larger than the arrangement pitch P2 of the one end 41a. Has been larger. With this configuration, the connection work of the header 5 is facilitated, and the interval between the plurality of openings 200 can be increased to increase the strength of this portion.
- Portions near the other end 41b of the plurality of curved pipes 41 extend linearly in a direction orthogonal to the peripheral wall 20 and are parallel to each other.
- Each curved tube 41 is configured such that a portion reaching the other end portion 41b of the penetrating portion with respect to the peripheral wall portion 20 has no larger diameter portion than the penetrating portion. With such a configuration, the operation of inserting the plurality of curved pipes 41 into the plurality of openings 200 of the peripheral wall portion 20 can be easily and appropriately performed.
- each opening 200 is formed as a burring hole with its peripheral edge rising, and the strength of the peripheral edge is increased. More preferably, a part of the peripheral wall portion 20 including a portion where the plurality of openings 200 are formed is formed as a non-arc-shaped flat plate portion 201.
- This flat plate portion 201 extends in the height direction with a constant width, and has a larger width of the can body 2 than other regions. Projects radially outward. According to such a configuration, the dimensions of each opening 200 can be easily determined, and the strength of the peripheral wall 20 can be increased. Further, since the distance between the coiled tubular portion 40 and the flat plate portion 201 is increased, the curved tube 41 having a relatively large radius of curvature can be used.
- Each of the pair of headers 5 is connected to the other end 41b of the plurality of curved tubes 41.
- Each header 5 is constituted by using, for example, a circular pipe 52, and a connection port 50 to which a water inlet pipe 99a or a hot water pipe 99b shown in FIG. 35 is connected is formed at one end.
- the header 5 is provided with a plurality of openings 51.
- the small diameter portion of the other end 41b of each curved tube 41 fits into each opening 51, and the tapered surface of the step portion 410b is Is in contact with the periphery of. This contact portion is welded or brazed. As a result, the connection between each curved pipe 41 and the header 5 is ensured, and a water-proof seal is achieved.
- the partition member 19 closes the bottom opening of the space 3 surrounded by the plurality of coiled tubular portions 40.
- the partitioning member 19 has a main body 190 having a downwardly concave concave portion formed on the upper surface, and a flange piece 191 formed on the outer peripheral surface of the main body 190.
- the main body 190 has a structure in which a heat insulating material 190b having excellent fire resistance and heat resistance is laminated on the upper surface of a stainless steel plate 19Oa, for example.
- the heat insulating material 190b is, for example, ceramic.
- the flange piece 191 is welded or brazed to the lower part of the tubular body wound structure SC, whereby the partition member 19 is mounted.
- the plurality of tubes constituting the tube overlap wound structure SC are helical, and the lower surface thereof has a gradient. Therefore, preferably, the flange piece 191 has a spiral shape corresponding to the gradient. .
- the partition member 19 may have a structure in which the partition member 19 is supported in the can 2 using a dedicated support member instead of being supported by the water pipe 4.
- a combustion gas passage 32 is formed between the outermost coiled tube portion 40 and the peripheral wall portion 20. Further, as shown in FIG. 36, a gap 31 is formed between loop portions 40a adjacent to each other in the height direction of the plurality of coiled tube portions 40. The space 3 communicates with the combustion gas passage 32 through the gap 31. As described later, the combustion gas passes from the space 3 through the gap 31 to the combustion gas passage 32. As shown by reference numeral nl, the annular wall 220 of the cover 21A is in contact with the upper part of the innermost coiled tubular portion 40, and the combustion gas Forces are also prevented from passing between them and flowing directly into the combustion gas passage 32.
- the tube overlap winding structure SC is configured using a plurality of spiral tubes, not only its lower end but also its upper end is inclined. Therefore, even if the upper end portion is brought into contact with the downward surface of the cover 21A, a gap is generated between them.
- the structure in which the annular groove 220 is in contact with the innermost coiled tube portion 40 suitably prevents combustion gas from entering the gap.
- the gap 31 between the coiled tube portions 40 is formed by using a plurality of spacers 18.
- the spacer 18 has the same configuration as that shown in FIG.
- the plurality of protrusions 18b of the spacer 18 are inserted between the loops 40a of each coiled tubular body 40, so that a gap 31 is formed, and the height of the gap 31 is reduced by the thickness of the protrusion 18b. It is specified to have the same dimensions.
- FIG. 38 in this heat exchange A2, for example, three spacers 18 are arranged at substantially equal intervals.
- a plurality of wrapped coil-shaped tube portions 40 are produced. These are manufactured by forming a plurality of coil-shaped tube portions 40 having different diameters by helically bending a straight tube, and then fitting these together.
- a curved pipe 41 is connected to each end 400 of each coiled pipe body section 40 to complete a plurality of water pipes 4.
- the connection of the curved tube 41 to each coiled tube body portion 40 is performed by connecting the small-diameter end portion of the one end portion 41a of the curved tube 41 to each coiled tube portion.
- the work is performed by fitting into the end portion 400 of the body portion 40, even when the arrangement pitch P2 of the plurality of end portions 400 is small, the work can be easily performed. Since the tapered surface of the step portion 410a and the end portion 400 are welded or brazed in contact with each other, the water-tightness of this portion is also improved.
- a plurality of spacers 18 are attached to the plurality of coiled tube portions 40.
- the plurality of protrusions 18b of each spacer 18 are also inserted between the loop portions 40a with the external force of the outermost coiled tube portion 40.
- the gap 31 is formed between the loop portions 40a, and the size thereof can be specified to be the same as the thickness of each protruding portion 18b.
- Each spacer 18 may be divided into a plurality of parts in the height direction. it can.
- a partition member 19 is also attached to the lower part of the plurality of coiled tube portions 40.
- a non-cylindrical plate member 20 ′ is manufactured.
- the plate member 20 ' is a portion formed as the peripheral wall portion 20 of the can body 2, and is formed using a rectangular stainless steel plate having flexibility.
- a pair of protruding pieces 20a ' are formed by bending the pair of edge portions 20a of the plate-shaped member 20'.
- a plurality of openings 200 for inserting the curved pipes 41 of the water pipes 4 are formed.
- the plate-shaped member 20 ′ is subjected to a bending process so as to be easily formed into a cylindrical shape, and the flat plate portion 201 is also formed in advance.
- the plate-like member 20 ′ After manufacturing the above-described plate-like member 20 ′, by enlarging the interval between the pair of edge portions 20 a, the plate-like member 20 ′ surrounds the periphery of the plurality of coiled tube portions 40. . At that time, the plurality of curved tubes 41 are inserted into the respective openings 200 from the other end 41b. As described above, since the regions near the other end portions 41b of the plurality of curved tubes 41 are straight tubes parallel to each other, it is easy and appropriate to insert these portions into the plurality of openings 200. Will be spared.
- the pair of edge portions 20a of the plate member 20 ′ are brought into contact with each other to make the plate member 20 ′ cylindrical.
- an appropriate jig (not shown)
- the peripheral wall portion 20 formed into a cylindrical shape is formed.
- the protruding piece 20a ' is formed over the entire length of the edge 20a.
- the protruding piece 20a' is formed at one or more locations on the edge 20a (for example, at the upper end of the And at the lower end).
- a pair of headers 5 are connected to the plurality of curved tubes 41.
- the header 5 As described with reference to FIG. 39, no special member is required, and the other end 4 lb of each curved tube 41 is inserted into the opening 51 of the header 5 to perform welding or brazing. It only needs to be attached. Therefore, the cost of parts can be reduced. Also, since the arrangement pitch P3 of the other end 41b of the curved pipe 41 and the opening 51 is increased, the connection work between each curved pipe 41 and the header 5 is also performed. It will be easier.
- a pair of covers 21 A and 21 B are fitted into the upper opening and the lower opening of peripheral wall 20, and these are welded to peripheral wall 20.
- the positioning of the cover bodies 21A and 21B can be achieved by using the plurality of protrusions 25a and 25b formed on the peripheral wall section 20, the work for attaching them is performed. Is also easy.
- a plurality of brackets 23 are also welded to the peripheral wall portion 20. However, the welding time of these brackets 23 may be either before or after the plate-shaped member 20 'is formed into a tubular shape.
- the heat exchange is appropriately manufactured by the above-described manufacturing method. As understood from the above description, in this heat exchange A2, even when the arrangement pitch P2 of the end portions 400 of the plurality of coiled tube portions 40 is small, the plurality of curved tubes 41 are used. By doing so, the header 5 can be easily and appropriately connected to the plurality of coiled tube portions 40. In particular, in the present embodiment, after the curved tube 41 is connected to the coiled tube portion 40, the coiled tube portion 40 is surrounded by the peripheral wall portion 20 of the tube 2, so that the coiled tube portion is formed. The operation of connecting the curved tube 41 to the part 40 is even easier.
- the plurality of curved pipes 41 are greatly protruded from the coiled tubular body 40, the plurality of curved pipes 41 are connected to the plurality of openings of the peripheral wall 20 (the plate-like member 20 ').
- the plurality of coiled tube portions 40 can be appropriately surrounded by the plate-shaped member 20 'by being inserted through the tube 200. If the dimensions of each curved pipe 41 protruding outside the can 2 are small, the header 5 will come very close to the can 2 and welding work for attaching the header 5 to each curved pipe 41, etc. However, according to the present embodiment, a part of each curved tube 41 can be made to protrude greatly, so that such a problem is appropriately eliminated.
- the water heater B2 shown in FIG. 35 includes a combustor 1, a bottom casing 80, and an exhaust duct 81 in addition to the heat exchanger A2.
- the fuel is shown to be supplied to the combustor 1 via the pipe 12a.
- the configurations of the bottom casing 80 and the exhaust duct 81 are the same as those of the previous embodiment, and therefore, detailed description thereof is omitted.
- the inlet pipe 99a and the outlet pipe 99b are in contact with the pair of headers 5. It has been continued. In this connection, it is preferable that the connection is made such that the lower header 5 is used for entering water and the upper header 5 is used for tapping. With this configuration, the water flow direction of the plurality of water pipes 4 is directed upward, which is opposite to the direction in which the combustion gas travels (downward), which is advantageous in increasing the heat exchange efficiency.
- the upper surface of the partition member 19 is formed in a concave shape, the combustion gas that has proceeded downward near the center of the space 3 is reflected upward so as to avoid the vicinity of the center. Is done.
- the fuel as indicated by the arrow N5 in FIG. A circulating flow of the firing gas can be created.
- the temperature of the combustion gas in the space 3 is made uniform, and the inflow of the combustion gas into each of the gaps 31 of the plurality of stages is made uniform, which is preferable for increasing the heat exchange efficiency. Become.
- a drain is generated in the tubular body wound structure portion SC, and adheres to the surface of each loop portion 40a.
- the drain flows downward and is preferably received by the drain receiving portion 26D by the action of gravity and the downward flow of the combustion gas. Since each of the coiled tube portions 40 has a spiral shape and is inclined, a drain force can be expected to easily flow downward along the surface of the coiled tube portion 40. If the drain remains on the surface of the coiled tubular body 40, the direct contact between the coiled tubular body 40 and the combustion gas is hindered by the drain, and there is a possibility that the amount of heat transfer may be reduced. It is possible to eliminate such a risk by making it easier to flow downward.
- the drain received by the drain receiving portion 26D is then appropriately discharged to the outside via the drain outlet 26b and the pipe 82. Therefore, the inside of the bottom casing 80 is not contaminated by the acidic drain, and the bottom casing 80 can be made of a material less expensive than stainless steel, such as copper or iron, which has poor acid resistance.
- the heat exchanger A3 shown in Figs. 45 and 46 has a configuration in which the peripheral wall portion 20 of the can body 2 is formed using the first and second plate members 20A and 20B.
- the first and second plate-like members 20A and 20B are both made of a stainless steel plate, and the first plate-like member 20A has a substantially rectangular shape with a constant width.
- a plurality of openings 200 are formed near the upper and lower ends of the first plate-shaped member 20A, respectively, and a plurality of curved pipes 41 individually penetrate these openings 200.
- the second plate-shaped member 20B is curved so as to surround most of the periphery of the helical tubular body portion 40, and both end edges 20b thereof are connected to both end edges 20c in the width direction of the first plate-shaped member 20A. Are joined. Due to this joining, the first and second plate-like members 20A, 20B have a substantially cylindrical shape connected to surround the entire circumference of the spiral tube body 40. Bent protruding pieces 20b 'and 2Oc' are formed on both end edges 20b and 20c of the first and second plate-like members 20A and 20B, and these protruding pieces 20b 'and 20c' are overlapped. Thus, the joining is performed.
- the above-described heat exchange A3 can be manufactured as follows. [0146] First, as shown in Fig. 47, a plurality of helical tube portions 40 formed in a lap winding shape are manufactured. This point is the same as in the case of the above-described method of manufacturing heat exchanger 82. Next, as shown in FIG. 48, after connecting the curved pipes 41 to both ends of each spiral tube body 40, the curved pipes 41 are inserted through the respective openings 200 of the first plate-shaped member 20A. Then, the first plate-like member 20A is arranged on the side of the spiral tube portion 40. After that, the header 5 is attached to the tip of the curved pipe 41 projecting from the first plate-like member 2. The spacer 18 and the partition member 19 are attached to the plurality of spiral tube portions 40 in the same manner as in the method of manufacturing the heat exchanger A2 described above.
- a second plate-shaped member 20B is manufactured and prepared.
- the second plate-shaped member 20B is manufactured by bending a projecting piece 20b 'on both end edges 20b of a rectangular stainless steel plate.
- the second plate-shaped member 20B is subjected to a bending process so as to be easily formed into a substantially cylindrical shape.
- both end edges 20b are opened, and the periphery of the plurality of spiral tube portions 40 is surrounded by the second plate-shaped member 20B.
- the projecting pieces 20b, 20c 'of the both end edges 20b, 20c of the first and second plate-like members 2OA, 20B are overlapped, and this portion is joined by, for example, welding.
- the heat exchange A3 shown in FIGS. 45 and 46 is manufactured.
- the point that the projecting pieces 20b 'and 20c' can be sandwiched by using an appropriate jig during the welding is the same as in the case of the above-described heat exchange manufacturing method.
- the present embodiment it is possible to connect the plurality of curved pipes 41 to the spiral tube portions 40 in a state where the plurality of spiral tube portions 40 are not housed in the can 2. it can.
- the work of attaching the header 5 to each curved tube 41 can be performed in a state where the plurality of spiral tube portions 40 are not housed in the can 2. Therefore, after the header 5 is attached, the can 2 does not hinder the water flow inspection or the visual inspection whether or not the curved pipe 41 and the header 5 are properly attached. This makes the inspection easier.
- the first plate-like member 20A has a relatively narrow rectangular shape, but the present invention is not limited to this.
- the first plate-shaped member 20A is formed into a semi-cylindrical shape or a shape close thereto. It does not matter.
- each of the first and second plate-like members may be formed into a semi-cylindrical shape, and these may be joined.
- the heat exchange according to the embodiment shown in Fig. 50 includes a pair of first plate-like members 20A that are vertically divided.
- a plurality of curved pipes 41 penetrate the pair of first plate-like members 20A, respectively, and joining protruding pieces 21d are formed on both end edges thereof.
- An extended portion 203 is provided at the intermediate portion thereof so as to protrude in the circumferential direction from the upper and lower portions.
- the extended portion 203 is a tubular portion formed by being directly joined without sandwiching the first plate-shaped member 20A.
- the pair of first plate-shaped members 20A and second plate-shaped members 20B are joined to each other to form a cylindrical shape, so that the peripheral wall portion 20 of the can body 2 is appropriately formed. It is possible.
- the pair of first plate-like members 20A can be individually attached to the upper curved pipe 41 and the lower curved pipe 41, for example, the upper curved pipe 41 and the lower Even in the case where the arrangement with the curved pipes 41 is displaced, if the first plate-like member 20A can be easily attached to them, the following advantage can be obtained.
- the plurality of curved tubes 41 and the header 5 are connected using the O-ring 53 and the stopper 9. More specifically, the other end portion 41b of the curved tube 41 is subjected to a pipe expansion process, so that a pair of large-diameter stepped portions 411, 412 and a concave groove 413 sandwiched therebetween are provided. Is formed.
- An O-ring 53 made of an elastic member is mounted in the concave groove 413.
- a relatively short cylindrical portion 54 is continuously provided in the body of the header 5, and the other end 41b of the curved tube 41 is fitted into the hole 54a.
- the O-ring 53 is in pressure contact with the inner peripheral surface of the hole 54a, and exhibits excellent waterproof sealing properties.
- the stopper 9 is made by, for example, pressing a thin metal plate, and as shown in Figs. 54A to 54C, a pair of legs 91 is continuously provided on the base 90. In addition, these leg portions 91 have a clip-like shape in which a tip portion 91a is provided at the distal end portion. A slit 92 is formed in each of the pair of legs 91, and a pair of arc-shaped portions 93A having an inner width D1 is formed on one side of this slit 92 (on the front side in FIG. 54A). . Pick-off tool 9 pickpocket On the other side of the slot 92, a pair of arc-shaped portions 93B having an inner width D2 is formed.
- the inner width D2 is larger than the inner width D1.
- a flange 54b is formed at the tip of the cylindrical portion 54, and the stopper 9 is arranged so that the flange 54b is disposed in the slit 92.
- the arc-shaped portion 93B sandwiches the outer periphery of the cylindrical portion 54 and is locked to the flange 54b.
- the arc-shaped portion 93A sandwiches the outer periphery of the side portion of the step portion 412 in the curved tube 41 and is locked on the side surface of the step portion 412. With such a configuration, even if a pull-out force acts on the curved tube 41, the curved tube 41 does not easily come off from the hole 54a.
- the stopper 9 when connecting the curved pipe 41 and the header 5, for example, as shown in FIG. 55, the other end 41b of the curved pipe 41 is inserted into the hole 54a, and thereafter, Attach the stopper 9.
- the stopper 9 When the stopper 9 is attached, the tips of the pair of legs 91 are brought into contact with the outer circumferences of the cylindrical portion 54 and the curved tube 41 and pressed, and the tips are piled up with the resilient force of the legs 91 and expanded. By opening it, it is possible to perform so-called one-touch. Therefore, the connection work is very easy. The workability of assembling, which does not require welding or the like, is further improved.
- the ends 400 of the plurality of spiral tube portions 40 are displaced in the circumferential direction of each spiral tube portion 4 by appropriate dimensions L15 and L16. According to the present embodiment, since the fitting connection portions between the end portion 400 and the curved pipe 41 are separated from each other, when, for example, welding is performed on those connection portions, the welded portions are prevented from coming into contact with each other. Therefore, it is preferable that the plurality of spiral tube portions 40 are not joined to each other.
- the basic shape of the peripheral wall portion 20 of the can body 2 is not formed in a perfect circular cylindrical shape, and the first and second centers of curvature Ol and 02 are offset from each other.
- the second portion has a substantially cylindrical shape having SAl and SA2. More specifically, the center Ol corresponds to the center of the plurality of spiral tube portions 40, and the basic shape of the first portion SA1 is a cross section of an appropriate radius R centered on the center Ol. It has a semicircular shape.
- the center 02 is offset from the center Ol by an appropriate distance L17 in the direction in which the plurality of curved pipes 41 are arranged.
- the basic shape of the second part SA2 is a cross section having a radius R centered on the center 02. It has a semicircular shape. Both ends of the first and second parts SAl, SA2 are smoothed through the third part SA3 It is connected.
- the plurality of curved pipes 41 penetrate the second portion SA2 at the circumferential center.
- the plurality of curved pipes 41 penetrate the peripheral wall portion 20.
- the dimension L18 of the part where it is formed can be increased.
- the header 5A is directly connected to the ends of the plurality of spiral tube portions 40.
- the header 5A is connected to each of the spiral tube portions 40, and penetrates the peripheral wall portion 20 of the can body 2 and partially protrudes to the outside of the can body 2.
- a second casing portion 52B having a connection port 50 for a pipe body.
- the portion through which the header 5A penetrates is a first plate-like member 20A provided with a through hole for passing through a header, and a second plate-like member is provided at both end edges of the first plate-like member 20A. Member 20B is joined.
- the header in place of the configuration in which the end of the water pipe penetrates the peripheral wall of the can body, the header may be configured to penetrate the peripheral wall. If the header is directly connected to the helical tube of the water tube, the curved tube 41 becomes unnecessary.
- FIG. 59 to FIG. 61 show other examples of the configuration relating to the drain processing.
- the annular wall 221 of the heat exchanger A4 protrudes downward, and when the drain flows down onto the cover 21B, the drain is connected to the combustion gas outlet.
- the 22B force is also configured to drip below it.
- the cover body 21B corresponds to an example of the drain guide section according to the present invention.
- a dish-shaped receiving member 83A for receiving a drain dripping from the combustion gas outlet 22B is supported and disposed by a suitable supporting member (not shown). The drain received by the receiving member 83A is discharged to the outside of the bottom casing 80 via the pipe 82.
- the inside of the bottom casing 80 is prevented from being contaminated by the drain.
- the combustion gas outlet 22B also serves as a drain outlet, and there is no need to provide a separate outlet exclusively for the drain in the heat exchanger A2, it is suitable for simplifying the configuration of the heat exchanger A2.
- the combustion gas outlet 22B of the heat exchanger A3 is formed in a substantially ring shape.
- the combustion gas outlet 22B also serves as a drain outlet, and a ring-shaped receiving member 83B for receiving the drain is provided below the outlet.
- the same operation as that of the embodiment shown in FIG. 59 can be obtained.
- the drain force dripping downward from the combustion gas outlet 22B of the heat exchanger A2 is received by the bottom wall of the bottom casing 80.
- a drain outlet 80a is formed in the bottom wall.
- the bottom wall is sloped such that the drain flows smoothly toward the drain outlet 80a.
- the bottom casing 80 is used as a drain receiving member, and there is no need to use a dedicated drain receiving member, so that an advantage that the number of components as a whole is reduced can be obtained.
- the bottom casing 80 it is necessary to prevent the bottom casing 80 from easily corroding due to the acidic drain. Therefore, it is desired that the bottom casing 80 be made of stainless steel or another material having excellent acid resistance.
- FIGS. 62 to 68 show other examples of the water pipe structure.
- the tube diameters of the plurality of coiled tube portions 40 are not the same, and the innermost coiled tube portion 40A (40) is different.
- the pipe diameter is larger than the plurality of coiled pipe portions 40B (40). Since the helical pitch of the coiled tubular portion 40A is different from the helical pitch of the coiled tubular portion 40B, a means for forming the gap 31 between the loop portions 40a of the coiled tubular portion 40A is shown in FIG. As shown, another spacer 18 ′ having a different arrangement pitch of the protruding portions 18 b from the spacer 18 is used!
- the tube diameter of the coiled tube portion 40A is increased, and the water flow through this portion is large.
- the coiled tube portion 40A directly surrounds the space 3 as a combustion chamber, and is a portion heated to the highest temperature. Therefore, the amount of heat recovery by the coiled tube portion 40A is increased, and it is possible to further increase the heat exchange efficiency.
- the coiled tube portions 40A and 40B have different diameters due to their different diameters. The helical pitch is also different, and the gap 31 between the coiled tubular body 40A and the gap 31 between the coiled tubular body 40B has a step in the height direction.
- the combustion gas collides with the coiled tubular portion 40B after passing through the gap 31 between the coiled tubular portion 40A from the space portion 3.
- the degree of contact between the coiled tubular portion 40 and the combustion gas is increased, and an effect of further improving the heat exchange efficiency can be expected.
- Embodiments As can be understood, in the present invention, it is not necessary to equalize the diameters of the plurality of coiled tube portions. Contrary to the above-described embodiment, even if the coil-shaped tubular portion having the largest diameter is arranged on the outermost periphery and latent heat recovery is performed by this portion, there is no problem. Further, even if all the tube diameters of the plurality of coiled tube portions are made different, no force is applied.
- a total of five coiled tube portions 40 are provided in a lap-winding manner.
- a heat insulating material 84 is interposed between each of the coiled tube portions 40 and the cover body 21.
- the heat insulating material 84 will be described later with reference to FIG.
- high heat exchange efficiency can be obtained by increasing the number of coiled tube portions 40.
- the present invention can easily realize high heat exchange efficiency by increasing the number of coiled tubular portions.
- the specific number of coiled tubular portions is not limited as long as the tubular overlapped structure portion is configured using a plurality of coiled tubular portions.
- a plurality of coiled tube portions 40 are provided in a staggered arrangement, and a side of gap 31 between loop portions 40a of one coiled tube portion 40 is provided. There is a loop portion 40a of another coiled tube portion 40.
- the combustion gas force passes through the gap 31 between the coiled tube portions 40 as indicated by the arrow N6. Then, the combustion gas collides with the side loop portion 40a. Therefore, the degree of contact of the combustion gas with each loop portion 40a is increased, and the amount of heat recovery can be increased.
- the heat exchange efficiency can be increased by devising the arrangement of the plurality of coiled tube portions 40, and the plurality of coiled tube portions can be improved. 40 can be provided in various arrangements.
- the outer diameters of the plurality of coiled tube portions 40 are substantially the same. However, their thicknesses t4 and t5 are different. Since the smaller the thickness of the coiled tubular body 40 is, the larger the amount of heat transferred to the water inside the coiled tubular body 40 can be, the difference in the thickness of the plurality of coiled tubular body sections 40 is provided. It is possible to adjust the ratio of the amount of heat recovery of each of the plurality of coiled tube portions 40 and the like. Of course, even if the tube diameter is made different from the thickness of the coiled tube body 40, the power is not too high!
- the dimensions of the gaps 31 of the coiled tubular body portion 40 in a plurality of stages are not uniform. More specifically, in the embodiment shown in FIG. 67, the dimension L19 of the gap 31 in the lower area of the coiled tubular body 40 is smaller than the dimension L20 of the gap 31 in the upper area. In the embodiment shown in FIG. 68, the dimension L21 of the gap 31 gradually decreases from the upper part to the lower part of the coiled tubular body 40.
- Fig. 69 to Fig. 78 show other examples of the means for forming a gap between the loop portions of the coiled tubular body.
- each protruding portion 18b of the spacer 18 is inclined such that its height becomes lower toward the tip.
- the plurality of loop portions 40a are arranged in an inclined manner in a certain direction along each protruding portion 18b. According to the present embodiment, when the drain generated on the surface of the plurality of coiled tubular portions 40 flows to each protruding portion 18b, the drain easily flows toward the tip of the protruding portion 18b, and the drain is dripped. The effect of promoting can be expected.
- each loop portion 4 Oa of the coiled tubular portion 40 is formed on each loop portion 4 Oa of the coiled tubular portion 40.
- the vertically adjacent loop portions 40a are in contact with each other via the projections 49a, whereby the gap 31 is formed.
- each of the upper surface and the lower surface of the loop portion 40a is a convex portion 49b, and the loop portions 40a are in contact with each other via these convex portions 49b. Due to the contact, a gap 31 is formed.
- the loop portion 40a is formed of, for example, a tubular body having a hollow circular cross section. As shown in FIG.
- a part of the loop portion 40a has a non-circular flat cross section, thereby forming a convex portion 49b. I have. As shown in FIG. 74, this can be formed by pressing a part of the coiled tubular portion 40 with both side forces.
- concave portions 49b ' are formed at a plurality of positions of the loop portion 40a.
- the concave portion 49b ' can be formed by pressing a part of the coil-shaped tube body 40 up and down to deform it into a flat shape.
- a gap 31 is formed between the loop portions 40a adjacent to each other in the height direction, where the force concave portions 40b 'are formed so as to be in contact with each other. Even with such a configuration, the gap 31 can be appropriately formed.
- a spiral concave groove 49c is formed on the outer surface of the loop portion 40a, and a part of the concave groove 49c forms the gap 31.
- two grooves 49c having different spiral directions are formed. As the number of grooves 49c increases, the total size of the gap 31 can be increased, and a large number of grooves 49c may be formed.
- a plurality of non-helical annular concave grooves 49 are formed on the outer surface of the loop portion 40a. Even with such a configuration, the gap 31 can be formed.
- FIG. 79 to FIG. 82 show other examples of means for preventing combustion gas from entering between the upper end of the tubular body wrapped structure portion SC and the cover body 21A.
- a ring-shaped heat insulating material 84 is interposed in a gap 39a between the upper end portion of the tubular overlapped structure SC and the cover 21A, and the gap 39a is closed.
- the heat insulating material 84 is, for example, an elastic ceramic.
- the tube The body overlap winding structure SC is configured using an inclined helical tube, so that the height of the gap 39a is not constant but inclined.
- the thickness of the heat insulating material 84 is not constant, and the lower end surface is inclined.
- downward convex portion 210 is press-formed on cover body 21A, and this convex portion 210 is in contact with the upper end of tubular body overlap winding structure SC.
- the downwardly facing surface of the convex portion 210 is an inclined surface corresponding to the upper end of the tubular body wound structure SC. According to the present embodiment, it is possible to prevent a gap through which the combustion gas passes above the tubular body overlap winding structure SC. Further, the heat insulating material 84 shown in FIG. 79 is unnecessary, and the annular wall 220 does not need to be in contact with the coiled tubular body 40.
- concave portion 210a formed on the upper surface of convex portion 210 of cover body 21A is closed by ring-shaped auxiliary member 211, and water is passed through the inside.
- the configuration is possible. According to the present embodiment, combustion gas power and heat recovery can be performed using water flowing in the recess 210a.
- each coiled tube portion 40 is horizontal, and as a means for that, a plurality of loops near the upper end of each coiled tube portion 40 are provided.
- a bent portion 401 is formed in the portion 40a. According to such a configuration, the upper end of the overlapped tubular structure SC is flat, so that there is no gap between the cover body 21A and the combustion gas, or the gap is small. These can be brought into contact appropriately.
- the peripheral wall portion 20 of the can body 2 is provided with an overhang portion 203, a part of which protrudes outward.
- the upper end portions of the plurality of coiled tubular portions 40 extend in a substantially horizontal direction so as to reduce the gap 204 between the coiled tubular portions 40A and the ends thereof, and the ends thereof are located directly above the plurality of loop portions 40a. It extends to the outside and extends into the overhang 203.
- a header 5B is directly connected to the distal ends of the plurality of coiled tube portions 40, and the header 5B penetrates the peripheral wall portion 20. Header 5B is
- the connection port 50 for the water inlet pipe or the hot water pipe has a shape offset from the connection port 50a for the coiled pipe body section 40 by an appropriate dimension L22.
- the header 5B is directly connected to the plurality of coiled tube portions 40 in a bundled manner, compared to the case of using the plurality of curved tubes 41 described above,
- the structure is simple.
- the part of the header 5B that is exposed to the outside of the can 2 is offset downward, so that the exposed part of the header 5B does not protrude to a position higher than the can 2 and does not become bulky. can do.
- the connection port 50 is offset above the connection port 50a.
- Fig. 84 and Fig. 85 show an example of a case where the combustor of the hot water supply device is of a regular combustion type.
- the hot water supply device B4 shown in these figures includes a combustor 1A and a heat exchanger 6.
- the combustor 1A is a gas combustor for burning fuel gas such as natural gas supplied through a gas supply pipe 12a upward, and is disposed in a can 10 connected to a lower portion of the heat exchanger 5. Have been. In the can 10, combustion air is blown upward by a blower fan 13.
- the combustor opening 22 # is formed in the bottom of the can body 2, and is located immediately above the combustor 1 #.
- the combustion gas outlet 22B is formed in a ring shape on the upper part of the can 2, and is located immediately above the tubular body overlapping winding structure SC.
- the tube overlap wound structure portion SC is a portion in which a plurality of coiled tube portions 40 are wound in a stacked manner, and can have various configurations similar to those of the above-described embodiment.
- the loop portion 40a of each coiled tube body portion 40 is a hollow rectangular shape connected in a spiral shape, and the peripheral wall portion 20 of the can body 2 corresponds to the loop shape.
- the fuel burning portion of the combustor 1A has a rectangular shape in plan view, and the above configuration corresponds to this.
- the loop portion 40a and the peripheral wall portion 20 may have a hollow circular shape.
- a header 5C is connected to both ends of the plurality of coiled tubular portions 40. This has the same configuration as the header 5B shown in FIG.
- the upper end region of the space 3 is closed by the partition member 19A.
- the partition member 19A is attached to the can 2 by, for example, joining the opening 205 formed at the upper end of the can 2 to the annular wall 206 at the periphery thereof so as to close the opening 205.
- this partition member 19A is simply represented as a flat plate. Similar to the partition member 19 used in the case of the back-combustion type, the surface that receives the collision of the combustion gas is formed in a concave shape. Is preferred.
- the annular wall 206 is in contact with the inner peripheral surface of the innermost coiled tubular portion 40, and the combustion gas passes between the partition member 19A and the innermost coiled tubular portion 40. And directly proceeds to the combustion gas outlet 22B.
- the point that the annular wall 220 of the combustor opening 22A is in contact with the inner peripheral surface of the innermost coiled tubular body 40, and that the drain receiving portion 26D is provided at the bottom of the can body 2 This is the same as the heat exchange habit 2 shown in FIGS. 35 to 39.
- the combustion gas generated in combustor 1A passes through combustor opening 22A upward and enters space 3.
- the combustion gas passes through the gap 31 of the tubular overlapped structure SC and proceeds into the combustion gas passage 32, and then moves up the combustion gas passage 32 to reduce the combustion gas outlet 22B force. Is discharged to the outside.
- the combustion gas comes into contact with a large number of loop portions 40a, thereby increasing the heat exchange efficiency.
- the sensible heat is recovered from the combustion gas by the coiled tubular portion 40 near the inner periphery, and the latent heat is recovered by the coiled tubular portion 40 near the outer periphery. It is also possible. Further, the drain generated due to the latent heat recovery flows downward along the spiral gradient of each coiled tube portion 40, and is received by the drain receiving portion 26D. Then, it is appropriately discharged to the outside of the can 2 from the discharge port 26b.
- the heat exchange according to the present invention can be used in combination with a forward combustion type combustor instead of using it with a reverse combustion type combustor. In this case, the effect intended by the present invention can be obtained.
- the traveling direction of the combustion gas does not matter.
- FIGS. 86 to 89 show examples in which the heat exchanger is configured in a one-can, two-circuit system.
- the heat exchanger of the present embodiment includes the first water passage formed by the pair of headers 5 and the two coiled tube portions 40C and 40E, the pair of the tube 5C and the one coiled tube.
- a second water passage formed by the body 40D and water can be separately supplied to the first and second water passages.
- the hot water generated through the first water passage is used for general hot water supply to a kitchen or a washroom
- the hot water generated through the second water passage is used for bath hot water. Can be.
- coiled tube portion 40D is sandwiched between two coiled tube portions 40C and 40E so as to directly contact each of them. According to such a configuration, boiling of water in each of the coiled tube portions 40C to 40E is prevented. That is, for example, when hot water is supplied to only the two coiled tube portions 40C and 40E in order to supply hot water to the kitchen and these are heated by the combustion gas, they stay in the coiled tube portion 40D. The flowing water is also heated by the combustion gas. However, the heat received by the coiled tube portion 40D can be released to the coiled tube portions 40C and 40E, thereby preventing the water in the coiled tube portion 40D from boiling.
- the present invention may be configured, for example, as shown in FIGS. 88A and 88B.
- FIGS. 88A and 88B In the configuration shown in FIG. 88A, although the basic tubular cross-sectional shape of the plurality of loop portions 40a is a hollow circular shape, one portion of them is a flat portion, and the flat portions come into contact with each other. I have. In the configuration shown in FIG. 88A, although the basic tubular cross-sectional shape of the plurality of loop portions 40a is a hollow circular shape, one portion of them is a flat portion, and the flat portions come into contact with each other. I have. In the configuration shown in FIG.
- the central loop portion 40a has a cross-sectional shape having a concave portion on both side surfaces thereof, and a part of the two loop portions 40a sandwiching the concave portion fits into the concave portion. According to these embodiments, it is preferable to increase the heat transfer area of the plurality of loop portions 40a to ensure the prevention of boiling of the water inside.
- the coil-shaped tubular body is not limited to the one using a round pipe, but may have various cross-sectional shapes. It is possible.
- each coiled tube portion 40 has a double tube structure having an inner tube 404 and an outer tube 405.
- curved pipes 41A, 41B having a double pipe structure are connected, and these curved pipes 41A, 41B have two independent chambers 502, 503.
- Double header 5D is connected. More specifically, each inner tube 404 has a curved tube 41A connected to its end, and communicates with the chamber 502 of the header 5D.
- Each outer pipe 405 has a curved pipe 41B connected to an end thereof, and communicates with the chamber 503 of the header 5D.
- These chanos 502, 503 have connection ports 50b, 50c for tapping pipes.
- FIG. 89 only the header structure for hot water supply is shown, and the header structure for power supply is the same as the header structure for hot water supply.
- the inside of the inner pipe 404 of each coiled pipe portion 40 becomes the first water passage, and the gap between the inner pipe 404 and the outer pipe 405 becomes the second water passage. .
- Water flow to these first and second water channels can be performed individually. Therefore, also in the present embodiment, hot water supply to a plurality of hot water supply destinations can be performed separately. Further, the water in the inner pipe 404 and the water in the gap between the inner pipe 404 and the outer pipe 405 can mutually conduct heat through the inner pipe 404, so that the flow of one of them is stopped. When the coil-shaped tube portion 40 is heated in the state of being heated, the boiling of the water is also prevented. These points are the same as those in the embodiment shown in FIGS. 29A and 29B. In the present embodiment, all of the plurality of coiled tube portions 40 have a double-pipe structure. Can Two-circuit system can be used.
- the loop 40b 1S of each coiled tube portion 40 has a substantially C shape. Both ends 407 of each loop section 40b are connected to the header 5E.
- the header 5E includes a chamber 504 having a water inlet 50d and a chamber 505 having a tap 50e, and penetrates the peripheral wall 20 so as to be located inside and outside the can body 2.
- the header 5E extends in the vertical direction of the can body 2. Both ends 407 of each loop portion 40b are connected to the chambers 504, 505 so that water can flow through the inside.
- the plurality of loop portions 40b there are a plurality of types having different diameters, these are formed in a concentric or substantially concentric lap winding shape, and are arranged in the height direction with a gap 31 therebetween. By doing so, the tube overlap winding structure SC is formed.
- a coil-shaped tube portion can be formed by using a plurality of substantially C-shaped tubes without using a spiral tube.
- substantially C-shaped means a hollow shape in which a part is cut out, and not only a shape in which a hollow circle is partially cut out, but also, for example, a part in a hollow rectangle is cut out.
- the shape is also included in a substantially C shape.
- the partition member 19 of the heat exchanger A7 is disposed above and closes the lower opening of the space 3 and is closed.
- the combustion gas present in the upper region is prevented from directly advancing to the region below the partition member 19.
- the space portion 3 is divided by the partition member 19 into first and second regions 30a and 30b. Further, the tubular body wrapped structure portion SC is divided into first and second heat exchange portions HT1 and HT2 surrounding the first and second regions 30a and 30b, respectively.
- the combustion gas generated by the combustor 1 flows from the first region 30a of the space 3 to the combustion gas passage 32 through the gap 31 of the first heat exchange unit HT1, and After that, it flows into the second region 30b through the gap 31 of the second heat exchange unit HT2. Therefore, it is possible to recover sensible heat in the first heat exchange section HT1 and recover latent heat in the second heat exchange section HT2. If the latent heat recovery is performed in the lower part of the tubular overlapped structure SC and the drain is generated intensively in this part, it is preferable to perform the drain recovery quickly and appropriately.
- the present invention is not limited to the above-described embodiments.
- the specific configuration of each part of the heat exchanger and the water heater according to the present invention can be variously changed in design.
- the hot water device in the present invention means a device having a function of generating hot water, and is used for various types of hot water devices for general hot water supply, bath hot water supply, heating, snow melting, and the like, and other than hot water supply. Including a device for producing hot water. It is preferable that the heat exchange can body and the water pipe be made of stainless steel having excellent corrosion resistance, but the invention is not limited to this.
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)
- Geometry (AREA)
- Details Of Fluid Heaters (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112005001061T DE112005001061T5 (de) | 2004-05-11 | 2005-05-10 | Wärmetauscher und Wasserheizvorrichtung |
US11/596,062 US7428883B2 (en) | 2004-05-11 | 2005-05-10 | Heat exchanger and water heater |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004-141337 | 2004-05-11 | ||
JP2004-141335 | 2004-05-11 | ||
JP2004141337A JP2005321172A (ja) | 2004-05-11 | 2004-05-11 | 瞬間式加熱装置および給湯装置 |
JP2004141335A JP2005321170A (ja) | 2004-05-11 | 2004-05-11 | 瞬間式加熱装置および給湯装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005108875A1 true WO2005108875A1 (ja) | 2005-11-17 |
Family
ID=35320308
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/008541 WO2005108875A1 (ja) | 2004-05-11 | 2005-05-10 | 熱交換器および温水装置 |
PCT/JP2005/008542 WO2005108876A1 (ja) | 2004-05-11 | 2005-05-10 | 熱交換器および温水装置 |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/008542 WO2005108876A1 (ja) | 2004-05-11 | 2005-05-10 | 熱交換器および温水装置 |
Country Status (3)
Country | Link |
---|---|
US (2) | US7428883B2 (ja) |
DE (2) | DE112005001061T5 (ja) |
WO (2) | WO2005108875A1 (ja) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007315661A (ja) * | 2006-05-25 | 2007-12-06 | Noritz Corp | 熱交換器および温水装置 |
JP2007315666A (ja) * | 2006-05-25 | 2007-12-06 | Noritz Corp | 熱交換器および温水装置 |
JP2008032324A (ja) * | 2006-07-29 | 2008-02-14 | Noritz Corp | 熱交換器および温水装置 |
JP2008039318A (ja) * | 2006-08-08 | 2008-02-21 | Noritz Corp | 熱交換器および温水装置 |
EP1965146A1 (fr) | 2007-02-28 | 2008-09-03 | Joseph Le Mer | Echangeur de chaleur à condensation comprenant deux faisceaux primaires et un faisceau secondaire |
US8028747B2 (en) | 2006-12-20 | 2011-10-04 | Noritz Corporation | Tube spacer, method of manufacturing the same, and heat exchanger |
JP2019190790A (ja) * | 2018-04-27 | 2019-10-31 | 株式会社長府製作所 | 給湯装置 |
JP2019196852A (ja) * | 2018-05-08 | 2019-11-14 | 株式会社長府製作所 | 給湯機 |
Families Citing this family (68)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2854229A1 (fr) * | 2003-04-25 | 2004-10-29 | Realisation Mecaniques Engenee | Echangeur de chaleur a condensation |
JP4852981B2 (ja) * | 2005-11-02 | 2012-01-11 | 株式会社ノーリツ | 温水装置 |
JP4923824B2 (ja) * | 2006-07-29 | 2012-04-25 | 株式会社ノーリツ | 熱交換器および温水装置 |
JP4961925B2 (ja) * | 2006-09-19 | 2012-06-27 | 株式会社ノーリツ | 温水装置 |
JP2008075908A (ja) * | 2006-09-19 | 2008-04-03 | Noritz Corp | 温水装置 |
NZ582223A (en) * | 2007-07-04 | 2012-09-28 | Astral Pool Australia Pty Ltd | Water heating apparatus, especially for pools |
ITMN20070029A1 (it) * | 2007-07-04 | 2009-01-05 | Unical A G S P A | Scambiatore di calore per caldaia |
US20090038785A1 (en) * | 2007-08-06 | 2009-02-12 | Zagalsky Harry Y | Tubes for heat exchange |
DE102008026074B3 (de) * | 2008-05-30 | 2009-05-20 | Viessmann Werke Gmbh & Co Kg | Wärmetauscher |
DE102008031424B4 (de) * | 2008-07-04 | 2013-07-11 | Viessmann Werke Gmbh & Co Kg | Wärmetauscher |
ITPD20080239A1 (it) * | 2008-07-31 | 2010-02-01 | Zilmet S P A | Scambiatore di calore per caldaie a condensazione |
IT1393074B1 (it) * | 2008-12-16 | 2012-04-11 | Ferroli Spa | Scambiatore spiroidale per riscaldamento e/o produzione di acqua calda ad uso sanitario, particolarmente adatto alla condensazione. |
DE102009024442A1 (de) * | 2009-06-10 | 2011-01-05 | Robert Bosch Gmbh | Gliederheizkessel |
CN101571315B (zh) * | 2009-06-16 | 2012-05-16 | 艾欧史密斯(中国)热水器有限公司 | 一种容积式燃气热水器 |
JP5605740B2 (ja) * | 2009-06-23 | 2014-10-15 | 株式会社ノーリツ | 温水装置 |
US8656867B2 (en) * | 2009-08-18 | 2014-02-25 | Intellihot Green Technologies, Inc. | Coil tube heat exchanger for a tankless hot water system |
IT1396729B1 (it) * | 2009-11-24 | 2012-12-14 | Fontecal S P A | Scambiatore a condensazione a doppia tubazione per riscaldamento di acqua e/o produzione di acqua calda sanitaria . |
CN101726109B (zh) * | 2009-11-27 | 2013-01-16 | 广东诺科冷暖设备有限公司 | 一种高效冷凝式热交换器 |
FR2955929B1 (fr) | 2010-02-01 | 2014-04-18 | Mer Joseph Le | Echangeur de chaleur a condensation pour plusieurs fluides et dispositif de production de fluides chauds comprenant un tel echangeur |
US9353967B2 (en) * | 2010-02-03 | 2016-05-31 | Farshid Ahmady | Fluid heating apparatus |
ITBO20100179A1 (it) * | 2010-03-22 | 2011-09-23 | Riello Spa | Tubo per scambiatore di calore |
DE102010047145A1 (de) * | 2010-09-30 | 2012-04-05 | Alstom Technology Ltd. | Wandausbiegung im Bereich einer im wesentlich rechteckförmigen Brenneröffnung |
IT1402005B1 (it) * | 2010-10-05 | 2013-08-28 | Riello Spa | Scambiatore di calore condensante per una caldaia a gas |
ITMI20101825A1 (it) * | 2010-10-06 | 2012-04-07 | Riello Spa | Deflettore discoidale per fumi di combustione e metodo di installazione dello stesso all'interno di un'elica di uno scambiatore di calore |
DE102011012577A1 (de) * | 2011-02-26 | 2012-08-30 | Volkswagen Ag | Wärmeaustauschvorrichtung |
US9316409B2 (en) * | 2011-08-17 | 2016-04-19 | Enerpro Inc. | Heat exchanger including waste heat recovery |
JP6088530B2 (ja) * | 2011-10-10 | 2017-03-01 | インテリホット グリーン テクノロジーズ,インコーポレイテッドIntellihot Green Technologies,Inc. | ガス−水管複合ハイブリッド型熱交換器 |
US20130104815A1 (en) * | 2011-10-27 | 2013-05-02 | Enerpro Inc. | Economizer |
US8683905B2 (en) * | 2011-12-28 | 2014-04-01 | Unison Industries, Llc | Methods of skiving metal and forming a fin in a heat exchanger |
PL223959B1 (pl) * | 2012-03-23 | 2016-11-30 | Aic Spółka Akcyjna | Dwufunkcyjny wymiennik ciepła |
US10024572B1 (en) * | 2012-12-20 | 2018-07-17 | Htp, Inc. | Heat exchanger |
US8955467B1 (en) * | 2013-01-08 | 2015-02-17 | William Parrish Horne | Steam boiler |
CA2899271C (en) * | 2013-01-25 | 2020-11-03 | Laars Heating Systems Company | High efficency boiler |
KR101576667B1 (ko) * | 2014-03-17 | 2015-12-11 | 주식회사 경동나비엔 | 콘덴싱 가스보일러의 열교환기 |
JP6482641B2 (ja) * | 2014-03-17 | 2019-03-13 | コンデヴォ ソシエタ ペル アチオニ | 熱交換セルのセットを製造する方法及びそのようにして得られる熱交換セルのセット |
UA117857C2 (uk) * | 2014-03-17 | 2018-10-10 | Кондево С.П.А. | Теплообмінний блок та спосіб здійснення теплообміну |
WO2015155611A2 (en) * | 2014-03-21 | 2015-10-15 | Carlos Quesada Saborio | Conic spiral coils |
US10012413B2 (en) | 2014-04-15 | 2018-07-03 | Ecr International, Inc. | Heat exchanger |
EP3164659A1 (en) * | 2014-07-01 | 2017-05-10 | Valmex S.p.A. | Heat exchanger and method for producing a heat exchanger |
US10012414B2 (en) * | 2014-07-11 | 2018-07-03 | Noritz Corporation | Water heater |
US9631808B2 (en) * | 2014-11-21 | 2017-04-25 | Honeywell International Inc. | Fuel-air-flue gas burner |
US10024603B2 (en) * | 2014-11-26 | 2018-07-17 | Riello S.P.A. | Double tubing condensation exchanger for heating water and/or for producing sanitary hot water |
CN108291739B (zh) * | 2015-06-24 | 2020-06-05 | 意大利利雅路股份有限公司 | 管道的型材、盘绕式热交换器以及冷凝锅炉 |
JP6534906B2 (ja) * | 2015-10-20 | 2019-06-26 | リンナイ株式会社 | 燃焼装置 |
WO2017102490A1 (de) * | 2015-12-17 | 2017-06-22 | Vaillant Gmbh | Primärwärmetauschereinheit |
FR3047549B1 (fr) * | 2016-02-09 | 2019-05-10 | Sermeta | Deflecteur pour echangeur de chaleur a condensation et echangeur muni d'un tel deflecteur |
DE102016215210A1 (de) * | 2016-08-16 | 2018-02-22 | Vaillant Gmbh | Wendelförmiger Heizungswärmetauscher |
WO2017178120A1 (de) * | 2016-04-14 | 2017-10-19 | Linde Aktiengesellschaft | Gewickelter wärmeübertrager |
NL2016755B1 (nl) * | 2016-05-10 | 2017-11-16 | Remeha B V | Warmtewisselaar. |
CN106016234A (zh) * | 2016-05-20 | 2016-10-12 | 天津市正焱节能采暖设备有限公司 | 一种高效节能燃气锅炉 |
US11175070B2 (en) * | 2016-12-30 | 2021-11-16 | Laars Heating Systems Company | Heat exchanger for heating water |
JP2018109484A (ja) * | 2017-01-06 | 2018-07-12 | 株式会社ノーリツ | 逆燃焼式燃焼装置 |
JP6841673B2 (ja) * | 2017-01-30 | 2021-03-10 | リンナイ株式会社 | 排気ダクト |
JP2018132256A (ja) * | 2017-02-16 | 2018-08-23 | リンナイ株式会社 | 熱交換器及びそれを用いた給湯装置 |
US10514206B2 (en) * | 2017-02-24 | 2019-12-24 | Intellihot, Inc. | Multi-coil heat exchanger |
US10753644B2 (en) | 2017-08-04 | 2020-08-25 | A. O. Smith Corporation | Water heater |
IT201700096656A1 (it) * | 2017-08-28 | 2019-02-28 | Cosmogas Srl | Scambiatore di calore per una caldaia, e tubo di scambiatore di calore |
US11644246B2 (en) * | 2017-11-29 | 2023-05-09 | Condevo S.P.A. | Heat exchange cell and method |
IT201800004323A1 (it) * | 2018-04-09 | 2019-10-09 | Dispositivo scambiatore di calore fra una sorgente di energia termica ed un fluido e dispositivo termoidraulico di riscaldamento di un fluido comprendente detto scambiatore | |
CN108397909A (zh) * | 2018-05-10 | 2018-08-14 | 宁波市哈雷换热设备有限公司 | 一种新型全预混冷凝式换热装置 |
PT3663689T (pt) * | 2018-12-07 | 2022-05-05 | Intellihot Inc | Permutador de calor |
JP2020094769A (ja) * | 2018-12-14 | 2020-06-18 | リンナイ株式会社 | 熱源機 |
CN109855437A (zh) * | 2019-03-07 | 2019-06-07 | 成都双流积利热能科技股份有限公司 | 一种冷凝热交换器 |
US11353270B1 (en) * | 2019-04-04 | 2022-06-07 | Advanced Cooling Technologies, Inc. | Heat pipes disposed in overlapping and nonoverlapping arrangements |
CN111981689A (zh) * | 2020-08-07 | 2020-11-24 | 广东致达航仪电气有限公司 | 热交换机构及壁挂炉 |
CN112413899A (zh) * | 2020-12-07 | 2021-02-26 | 艾欧史密斯(中国)热水器有限公司 | 冷凝换热器及其热水器 |
US11680704B2 (en) * | 2021-04-29 | 2023-06-20 | Hossein Rayramesh | High-efficiency two-chamber boiler using turbulent reverse flow of combustion gases |
IT202200013435A1 (it) * | 2022-06-27 | 2023-12-27 | Riello Spa | Scambiatore termico per caldaia, in particolare per caldaia a condensazione, e caldaia comprendente detto scambiatore |
Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5363643A (en) * | 1976-11-19 | 1978-06-07 | Hitachi Ltd | Heat exchanger |
JPS57200853U (ja) * | 1981-06-17 | 1982-12-21 | ||
JPS59172945U (ja) * | 1983-05-06 | 1984-11-19 | 株式会社ハ−マン | 給湯器 |
JPS6270285U (ja) * | 1985-10-15 | 1987-05-02 | ||
JPS62288446A (ja) * | 1986-06-04 | 1987-12-15 | Gasutaa:Kk | 吸熱フインを用いない強制燃焼式湯沸器 |
JPH0250045A (ja) * | 1988-08-12 | 1990-02-20 | Chubu Electric Power Co Inc | 熱交換装置 |
JPH0933103A (ja) * | 1995-07-14 | 1997-02-07 | Frontier Inc | ガス瞬間温水器 |
JPH11141989A (ja) * | 1997-11-12 | 1999-05-28 | Matsushita Electric Ind Co Ltd | 1缶2回路熱交換装置 |
JP2000074418A (ja) * | 1998-09-02 | 2000-03-14 | Kimura Kohki Co Ltd | 空気調和機用熱交換コイル |
JP2000304471A (ja) * | 1999-04-21 | 2000-11-02 | Sakae Sangyo Kk | 熱交換器 |
JP2001065801A (ja) * | 1999-08-24 | 2001-03-16 | Hitachi Ltd | 熱交換器及びボイラ |
JP2002243281A (ja) * | 2001-02-16 | 2002-08-28 | Noritz Corp | 熱交換器及び熱交換器の製造方法 |
JP2003021475A (ja) * | 2001-07-05 | 2003-01-24 | Sanyo Electric Co Ltd | 熱交換器及びヒートポンプ式給湯機 |
Family Cites Families (36)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS483648U (ja) | 1971-05-25 | 1973-01-17 | ||
JPS5121156U (ja) | 1974-08-05 | 1976-02-16 | ||
JPS555883Y2 (ja) | 1977-09-14 | 1980-02-09 | ||
JPS5548241U (ja) | 1978-09-21 | 1980-03-29 | ||
JPS55127944U (ja) | 1979-03-02 | 1980-09-10 | ||
US4403572A (en) * | 1980-05-16 | 1983-09-13 | Advanced Mechanical Technology, Inc. | Combustion product condensing water heater |
US4502626A (en) * | 1980-05-16 | 1985-03-05 | Gas Research Institute | Combustion product condensing water heater |
US4531572A (en) * | 1980-09-29 | 1985-07-30 | Molitor Victor D | Method of and unit for recovery of waste energy |
JPS5782687A (en) | 1980-11-12 | 1982-05-24 | Hitachi Ltd | Heat exchanger |
JPS6043237B2 (ja) | 1980-11-17 | 1985-09-27 | 日本電気株式会社 | レ−ザ加工装置 |
JPS57161484A (en) | 1981-03-31 | 1982-10-05 | Hitachi Ltd | Heat exchanger |
JPS5812944A (ja) | 1981-07-17 | 1983-01-25 | Bunka Buro Sangyo Kk | 一缶二水路式給湯兼用風呂釜 |
JPS591943A (ja) | 1982-06-25 | 1984-01-07 | Hitachi Ltd | 液体加熱器 |
JPS5966646A (ja) | 1982-10-06 | 1984-04-16 | Matsushita Electric Ind Co Ltd | 温水ボイラ |
JPS5967748A (ja) * | 1982-10-08 | 1984-04-17 | Matsushita Electric Ind Co Ltd | 無線通信装置 |
JPS5967748U (ja) | 1982-10-29 | 1984-05-08 | 株式会社東芝 | 給湯器 |
JPS59170642A (ja) | 1983-03-18 | 1984-09-26 | Hitachi Ltd | 熱交換器 |
JPS6169676U (ja) | 1984-10-04 | 1986-05-13 | ||
JPS6174779U (ja) | 1984-10-19 | 1986-05-20 | ||
USRE33082E (en) * | 1985-09-13 | 1989-10-10 | Advanced Mechanical Technology, Inc. | Combustion product condensing water heater |
JPS63220091A (ja) | 1987-03-07 | 1988-09-13 | Bunkichi Tanaka | 熱交換機用コイル形流路及びこれを用いた熱交換用コイルユニツト |
JP3007741B2 (ja) | 1992-01-14 | 2000-02-07 | アンリツ株式会社 | レーダ装置 |
KR950002487B1 (ko) | 1992-05-12 | 1995-03-20 | 주식회사금성사 | 가스보일러용 열교환장치 |
JPH06331220A (ja) | 1993-05-26 | 1994-11-29 | Tokyo Gas Co Ltd | 給湯器に於ける潜熱及びドレン回収方法 |
JPH0777397A (ja) | 1993-09-07 | 1995-03-20 | Kawaju Reinetsu Kogyo Kk | 伝熱管 |
JPH1048168A (ja) | 1996-07-31 | 1998-02-20 | Noritz Corp | 燃焼装置 |
US6305331B1 (en) * | 1997-03-24 | 2001-10-23 | Vth - Verfahrenstechnik Fur Heizung Ag | Boiler fitted with a burner |
JPH1123067A (ja) | 1997-06-30 | 1999-01-26 | Noritz Corp | 給湯器 |
JP3922814B2 (ja) | 1998-07-31 | 2007-05-30 | 株式会社ガスター | 潜熱回収型燃焼装置 |
JP3646031B2 (ja) | 1999-11-12 | 2005-05-11 | リンナイ株式会社 | 潜熱回収型給湯機の制御方法 |
JP2002323291A (ja) | 2001-04-26 | 2002-11-08 | Sanyo Electric Co Ltd | 熱交換器及びヒートポンプ式給湯装置 |
US7009395B2 (en) | 2002-05-15 | 2006-03-07 | General Electric Company | Method for MRI with steady-state free precession pulse sequences |
JP2004044914A (ja) | 2002-07-11 | 2004-02-12 | Noritz Corp | 燃焼装置 |
FR2843189B1 (fr) * | 2002-07-30 | 2004-10-15 | Mer Joseph Le | "echangeur de chaleur a condensation a double faisceau de tubes" |
EP1561075B1 (fr) * | 2002-10-16 | 2013-05-01 | Giannoni France | Echangeur de chaleur a condensation, a enveloppe plastique |
FR2854229A1 (fr) * | 2003-04-25 | 2004-10-29 | Realisation Mecaniques Engenee | Echangeur de chaleur a condensation |
-
2005
- 2005-05-10 DE DE112005001061T patent/DE112005001061T5/de not_active Withdrawn
- 2005-05-10 DE DE200511001069 patent/DE112005001069T8/de active Active
- 2005-05-10 US US11/596,062 patent/US7428883B2/en not_active Expired - Fee Related
- 2005-05-10 WO PCT/JP2005/008541 patent/WO2005108875A1/ja active Application Filing
- 2005-05-10 US US11/596,036 patent/US7523721B2/en not_active Expired - Fee Related
- 2005-05-10 WO PCT/JP2005/008542 patent/WO2005108876A1/ja active Application Filing
Patent Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5363643A (en) * | 1976-11-19 | 1978-06-07 | Hitachi Ltd | Heat exchanger |
JPS57200853U (ja) * | 1981-06-17 | 1982-12-21 | ||
JPS59172945U (ja) * | 1983-05-06 | 1984-11-19 | 株式会社ハ−マン | 給湯器 |
JPS6270285U (ja) * | 1985-10-15 | 1987-05-02 | ||
JPS62288446A (ja) * | 1986-06-04 | 1987-12-15 | Gasutaa:Kk | 吸熱フインを用いない強制燃焼式湯沸器 |
JPH0250045A (ja) * | 1988-08-12 | 1990-02-20 | Chubu Electric Power Co Inc | 熱交換装置 |
JPH0933103A (ja) * | 1995-07-14 | 1997-02-07 | Frontier Inc | ガス瞬間温水器 |
JPH11141989A (ja) * | 1997-11-12 | 1999-05-28 | Matsushita Electric Ind Co Ltd | 1缶2回路熱交換装置 |
JP2000074418A (ja) * | 1998-09-02 | 2000-03-14 | Kimura Kohki Co Ltd | 空気調和機用熱交換コイル |
JP2000304471A (ja) * | 1999-04-21 | 2000-11-02 | Sakae Sangyo Kk | 熱交換器 |
JP2001065801A (ja) * | 1999-08-24 | 2001-03-16 | Hitachi Ltd | 熱交換器及びボイラ |
JP2002243281A (ja) * | 2001-02-16 | 2002-08-28 | Noritz Corp | 熱交換器及び熱交換器の製造方法 |
JP2003021475A (ja) * | 2001-07-05 | 2003-01-24 | Sanyo Electric Co Ltd | 熱交換器及びヒートポンプ式給湯機 |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007315661A (ja) * | 2006-05-25 | 2007-12-06 | Noritz Corp | 熱交換器および温水装置 |
JP2007315666A (ja) * | 2006-05-25 | 2007-12-06 | Noritz Corp | 熱交換器および温水装置 |
JP2008032324A (ja) * | 2006-07-29 | 2008-02-14 | Noritz Corp | 熱交換器および温水装置 |
JP2008039318A (ja) * | 2006-08-08 | 2008-02-21 | Noritz Corp | 熱交換器および温水装置 |
US8028747B2 (en) | 2006-12-20 | 2011-10-04 | Noritz Corporation | Tube spacer, method of manufacturing the same, and heat exchanger |
EP1965146A1 (fr) | 2007-02-28 | 2008-09-03 | Joseph Le Mer | Echangeur de chaleur à condensation comprenant deux faisceaux primaires et un faisceau secondaire |
JP2019190790A (ja) * | 2018-04-27 | 2019-10-31 | 株式会社長府製作所 | 給湯装置 |
JP2019196852A (ja) * | 2018-05-08 | 2019-11-14 | 株式会社長府製作所 | 給湯機 |
JP7240819B2 (ja) | 2018-05-08 | 2023-03-16 | 株式会社長府製作所 | 給湯機 |
Also Published As
Publication number | Publication date |
---|---|
DE112005001061T5 (de) | 2008-11-06 |
US20070221143A1 (en) | 2007-09-27 |
US7428883B2 (en) | 2008-09-30 |
US20070209606A1 (en) | 2007-09-13 |
WO2005108876A1 (ja) | 2005-11-17 |
DE112005001069T8 (de) | 2008-01-31 |
US7523721B2 (en) | 2009-04-28 |
DE112005001069T5 (de) | 2007-10-25 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2005108875A1 (ja) | 熱交換器および温水装置 | |
JP4881885B2 (ja) | 潜熱熱交換器 | |
JP2006317036A (ja) | 熱交換器およびこれを備えた温水装置 | |
EP1800068A1 (en) | Heat exchanger for common use for boiler and hot water supply | |
JP4143431B2 (ja) | 熱交換器 | |
JP2003517559A (ja) | ウォーターヒータ及びウォーターヒータ部材構造 | |
JP5207053B2 (ja) | 熱交換器および温水装置 | |
JP4729973B2 (ja) | 熱交換器およびこれを備えた温水装置 | |
JP2006317034A (ja) | 熱交換器およびこれを備えた温水装置 | |
JP2007240092A (ja) | 水冷媒熱交換器 | |
EP0719991B1 (en) | Heat exchanger | |
JP5234349B2 (ja) | 熱交換器および温水装置 | |
CN100510601C (zh) | 液-液热交换器 | |
JP2005321172A (ja) | 瞬間式加熱装置および給湯装置 | |
AU2010239901A1 (en) | Method for braze-welding a fixing plate and a flow channel cap in a heat exchanger, and heat exchanger produced by same | |
KR100570290B1 (ko) | 콘덴싱 열교환장치 | |
JP2007064551A (ja) | 燃焼装置 | |
JPH1089881A (ja) | 積層型熱交換器 | |
JP5234509B2 (ja) | 熱交換器および温水装置 | |
JP2005326102A (ja) | 熱交換器及びこの熱交換器を用いた熱源機 | |
CN214370968U (zh) | 一种壁挂炉换热器 | |
JPH09318292A (ja) | 熱交換器用金属製タンクのパイプ接合部 | |
CN219284034U (zh) | 一种套管式主热交换器 | |
KR100557870B1 (ko) | 가스보일러용 열교환기의 급수파이프 고정방법 | |
KR200341663Y1 (ko) | 가스보일러의 열교환기 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS KE KG KM KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NG NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SM SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
DPEN | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed from 20040101) | ||
WWE | Wipo information: entry into national phase |
Ref document number: 11596062 Country of ref document: US Ref document number: 2007221143 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1120050010619 Country of ref document: DE |
|
122 | Ep: pct application non-entry in european phase | ||
WWP | Wipo information: published in national office |
Ref document number: 11596062 Country of ref document: US |
|
RET | De translation (de og part 6b) |
Ref document number: 112005001061 Country of ref document: DE Date of ref document: 20081106 Kind code of ref document: P |