WO2006068052A1 - 給湯装置 - Google Patents
給湯装置 Download PDFInfo
- Publication number
- WO2006068052A1 WO2006068052A1 PCT/JP2005/023155 JP2005023155W WO2006068052A1 WO 2006068052 A1 WO2006068052 A1 WO 2006068052A1 JP 2005023155 W JP2005023155 W JP 2005023155W WO 2006068052 A1 WO2006068052 A1 WO 2006068052A1
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- WO
- WIPO (PCT)
- Prior art keywords
- water
- casing
- hot water
- heat exchanger
- combustion gas
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F17/00—Removing ice or water from heat-exchange apparatus
- F28F17/005—Means for draining condensates from heat exchangers, e.g. from evaporators
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- 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
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- 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
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- 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
- F28D7/16—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 in parallel spaced relation
- F28D7/163—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 in parallel spaced relation with conduit assemblies having a particular shape, e.g. square or annular; with assemblies of conduits having different geometrical features; with multiple groups of conduits connected in series or parallel and arranged inside common casing
- F28D7/1638—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 in parallel spaced relation with conduit assemblies having a particular shape, e.g. square or annular; with assemblies of conduits having different geometrical features; with multiple groups of conduits connected in series or parallel and arranged inside common casing with particular pattern of flow or the heat exchange medium flowing inside the conduits assemblies, e.g. change of flow direction from one conduit assembly to another one
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- 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 hot water supply device that generates hot water by performing heat recovery by heat exchange from a combustion gas tank generated by a combustor.
- Some hot water supply apparatuses include a secondary heat exchanger for latent heat recovery in addition to a primary heat exchanger for sensible heat recovery (see, for example, Patent Documents 1 to 4).
- a secondary heat exchanger for latent heat recovery in addition to a primary heat exchanger for sensible heat recovery
- the heat exchange efficiency can be increased as compared with the case where only the combustion gas force sensible heat is recovered.
- the combustion gas force latent heat is recovered, the water vapor in the combustion gas is condensed and condensed water is generated.
- condensate becomes strongly acidic, about PH3, which absorbs sulfur oxides and nitrogen oxides in the combustion gas.
- the secondary heat exchanger is made of, for example, stainless steel having acid resistance so as not to cause corrosion due to strongly acidic condensed water.
- the primary heat exchanger is generally made of copper, for example, for the purpose of reducing the manufacturing cost of the entire heat exchanger.
- the primary heat exchange does not have acid resistance. Therefore, when designing this primary heat exchange, make sure that strong acid condensate is not generated due to heat recovery. It is necessary to consider.
- Patent Document 5 by concentrating the water pipe of the secondary heat exchanger ⁇ of the water heater, the condensed water generated on the surface of the water pipe flows toward the lower end of the water pipe, and in the middle of the flow.
- the means for evaporation is described.
- the operating condition of the water heater is not constant.
- a large amount of condensed water may be generated on the surface of the water pipe of the secondary heat exchanger.
- Patent Document 5 in such a case, there is a possibility that a part of the condensed water drops as it is below the water pipe as it is, and the lower region is contaminated.
- Patent Document 5 describes a means for inclining the water pipe for the purpose of causing the condensed water to flow toward the lower end of the water pipe of the heat exchanger, as in Reference 5. However, it is difficult to properly solve the above-mentioned problems only by such means.
- Patent Document 1 Japanese Patent Laid-Open No. 7-167586
- Patent Document 2 JP-A-9-159282
- Patent Document 3 Japanese Patent Application Laid-Open No. 2004-245515
- Patent Document 4 Japanese Patent Application Laid-Open No. 2004-61069
- Patent Document 5 JP 2002-39623 A
- Patent Document 6 Japanese Utility Model Publication No. 59-55271
- An object of the present invention is to provide a hot water supply apparatus capable of solving or suppressing the above-described problems.
- the present invention takes the following technical means.
- a hot water supply apparatus includes a combustor, a primary heat exchanger for recovering sensible heat from the combustion gas power generated by the combustor, and recovering latent heat from the combustion gas.
- a secondary heat exchanger wherein the secondary heat exchanger extends in a certain direction and has a plurality of first and second ends that are spaced apart in the same direction.
- a hot water supply device comprising: a header portion connected to the first end portion so as to be possible; The number of water pipes is such that the first end is lower than the second end so that the hot water can flow into the header when the water is stopped and the internal hot water is drained to the outside.
- the plurality of wall portions of the casing include an upper wall portion and a bottom wall portion that are positioned above and below the plurality of water pipes with an upper and lower gap therebetween, and the air supply port. And a rear wall portion and a front wall portion that are respectively formed at the rear and front of the plurality of water pipes, each of which has an exhaust port, and the combustion gas flows between the plurality of water pipes and between the upper and lower gaps.
- the upper wall portion and the bottom wall portion are inclined so that the inner surfaces thereof are substantially parallel to the plurality of water pipes.
- the width of the upper and lower gaps is the constant direction Oite RyakuHitoshi It is characterized by that! /
- the exhaust port has a shape extending in a direction inclined with respect to the inner surfaces of the upper wall portion and the bottom wall portion in a front view of the casing, and the casing has the exhaust port described above. Is provided in a posture extending in the horizontal direction.
- the plurality of water pipes are divided into two groups in the front-rear direction of the casing, and the header portion is individually connected to the first end of each of the two groups of water pipes.
- a water inlet and a hot water outlet chamber formed in the front-rear direction of the casing, wherein one of the water inlet and the hot water outlet chamber is provided for the water inlet and the water outlet.
- the outlet is provided near the upper part of the hot water supply chamber, and the other is provided closer to the lower part.
- the inlet or outlet is closer to the upper part.
- An auxiliary drain outlet is provided near the bottom of one of the chambers, which is biased to discharge the hot water in the chamber to the outside! /
- the primary heat exchanger is disposed on either the lower side or the upper side of the casing of the secondary heat exchanger and allows the combustion gas to pass therethrough, and the can A water pipe that is at least partially disposed in the body and performs heat exchange with the combustion gas.
- the casing of the secondary heat exchanger and the plurality of water pipes have a horizontal dimension that is larger than the width of the can body. The size is large and protrudes to the side of the tubular body, and the protruding size is larger at the second end portion than at the first end portion.
- the hot water supply apparatus includes a control means for controlling the drive of the combustor, and a neutralizer for neutralizing condensed water generated along with the recovery of latent heat.
- the secondary heat exchanger is provided on the can body of the primary heat exchanger, and on the side of the can body, below the protruding portion near the second end of the secondary heat exchanger.
- a space is formed, and at least one of the control means and the neutralizer is arranged in the space.
- the header portion includes a water pipe mounting member to which the first end of each water pipe is connected, a dimension defining member having one end fixedly attached to the water pipe mounting member, and A header cover which is joined to the water pipe mounting member so that a part thereof is in contact with the other end of the defining member and forms the chambers between the water pipe mounting member and the header cover;
- the casing of the secondary heat exchanger has a side wall portion overlapped with the outer surface of the header cover, and the side wall portion of the parenthesis together with the header cover by the bolt. It is attached to the dimension defining member.
- the hot water supply device is a combustion gas that is provided in the casing and suppresses the combustion gas that has passed through the air supply port from directly progressing toward the bottom wall portion of the casing.
- Flow control means is further provided.
- the combustion gas flow restricting means includes a plate-like portion protruding substantially horizontally from the lower edge portion of the air supply port toward the front wall portion.
- FIG. 1 is a schematic front sectional view showing an example of a hot water supply apparatus according to the present invention.
- FIG. 2 is a front view of the main part of the hot water supply apparatus shown in FIG.
- FIG. 3 is a sectional view taken along line III-III in FIG.
- FIG. 4 is a cross-sectional view taken along the line IV-IV in FIG.
- FIG. 5 is a left side view of the secondary heat exchanger of the hot water supply apparatus shown in FIG.
- FIG. 6 is a cross-sectional plan view of the main part of FIG.
- FIG. 7 is a plan cross-sectional view of an essential part showing a modified example of the configuration shown in FIG.
- FIG. 8 is a perspective view of the casing of the secondary heat exchanger of the water heater shown in FIG.
- FIG. 9 is a schematic front sectional view showing another example of the hot water supply apparatus according to the present invention.
- the hot water supply device A1 of this embodiment includes a combustor 3, a primary heat exchanger 1, a secondary heat exchanger B, a neutralizer 2, and an outer casing that surrounds them. 4 is provided.
- the combustor 3 is a gas combustor that is disposed in a can body 30 having an upper opening and that combusts fuel gas supplied via a pipe 32. Combustion air is blown upward from the lower blower fan 31 into the can 30.
- the basic configuration of the primary heat exchanger 1 is the same as that of a conventionally known heat exchange ⁇ , and has a structure in which a water pipe 11 having a plurality of fins 12 penetrates the can body 10 in a substantially horizontal direction. is doing.
- the can body 10 is mounted on the can body 30 of the combustor 3, and the combustion gas generated by the combustor 3 travels upward in the can body 10.
- the secondary heat exchanger B is disposed above the primary heat exchanger 1 and is connected to the can body 10 via the auxiliary can body 32.
- the secondary heat exchange includes a plurality of water pipes 5, a pair of header portions 6 A and 6 B, and a casing 7 surrounding the plurality of water pipes 5.
- the constituent members of these secondary heat exchangers B are made of a material having acid resistance such as stainless steel so as not to easily corrode due to acidic condensed water.
- Each water pipe 5 has a straight shape extending in a certain direction, and is a narrow pipe having a smaller diameter than the water pipe 11 of the primary heat exchange for the purpose of increasing the amount of heat recovery.
- a pair of header portions 6A and 6B are connected to the first end portion 50a in the longitudinal direction of each water pipe 5 and the second end portion 50b opposite thereto.
- Each water pipe 5 is inclined at an appropriate angle ⁇ (for example, about 5 ° to 20 °) with respect to the horizontal direction so that the first end portion 50a is lower in height than the second end portion 50b. .
- the casing 7 has a substantially rectangular parallelepiped shape, and each has a substantially flat plate-like upper wall 70a, bottom wall 70b, front wall 70c, rear wall 70d, and side walls 70e, 70f. Yes.
- the upper wall portion 70a and the bottom wall portion 70b are located above and below the plurality of water pipes 5 and are inclined in the same manner as the plurality of water pipes 5.
- the inner surfaces of the upper wall portions 70a and the bottom wall portions 70b are plural.
- the bottom wall portion 70b of the casing 7 is provided so as to cover the entire lower region of the plurality of water tubes 5 so as to be able to receive condensed water that is generated along with the recovery of latent heat and flows down from each water tube 5. It has been.
- a discharge port 73 for discharging condensed water to the outside is provided in one end region of the bottom wall portion 70b having a lower height.
- the condensed water discharged from the discharge port 73 is introduced into the neutralizer 2 using an appropriate noise as shown by a phantom line in FIG.
- the neutralizer 2 is a container in which a neutralizing agent is accommodated in, for example, a greaves container.
- the neutralizing agent is, for example, calcium carbonate.
- the condensed water is neutralized by passing through the neutralizer 2 and then discharged to the outside of the outer casing 4.
- the rear wall 70 d of the casing 7 is formed with an air inlet 72 for allowing the combustion gas that has passed through the primary heat exchanger 1 to flow into the casing 7.
- An exhaust port 71 for discharging the combustion gas to the outside is formed in the front wall portion 70c.
- the exhaust port 71 has a long rectangular shape that is relatively inclined with respect to the extending direction of the upper wall portion 70a, the bottom wall portion 70b, and each water pipe 5 of the casing 7, or a similar shape thereto. .
- the casing 7 is set in an inclined posture so that the exhaust port 71 has a long shape in the horizontal direction.
- the header portion 6A is provided with chambers 61A and 61B for entering and discharging hot water. These chambers 61A and 61B have a water inlet 60A and a hot water outlet 60B connected to the first ends 50a of the plurality of water pipes 5.
- the plurality of water pipes 5 are divided into two groups Gl and G2, which are individually connected to the two chambers 61A and 61B.
- the header portion 6B includes a common chamber 61C connected to the second end portions 50b of the plurality of water pipes 5.
- the secondary heat exchanger B when water is supplied from the water inlet 60A to the water inlet chamber 61A, the water passes through the water pipe 5 of the group G1 and reaches the common chamber 61C. Then, the water then passes through the water pipe 5 of group G2 and flows into the hot water outlet chamber 61B, and the hot water outlet 60B is also discharged.
- the pair of header portions 6A and 6B are located inside the side wall portions 70e and 70f of the casing 7, and are accommodated in the casing 7. As will be described later, this configuration can bring about a favorable effect when condensation occurs on the outer surfaces of the header portions 6A and 6B.
- the water inlet 60A is located at a lower position near the lower portion of the water inlet chamber 61A. Is provided.
- the hot water outlet 60B is provided at a high position near the upper portion of the hot water supply chamber 61B.
- An auxiliary drainage port 62 for draining water is provided in the lower portion of the chamber 61B for hot water and below the hot water outlet 60B.
- the water supplied to the inlet 60A flows through two groups Gl and G2 of the plurality of water pipes 5.
- the power that lowers the water inlet 60A and raises the hot water outlet 60B is not limited to this.
- the inlet 60A can be raised and the outlet 60B can be lowered.
- the auxiliary outlet 62 is provided at a low position of the water inlet chamber 61A.
- the water inlet chamber 61A of the header portion 6A is formed by assembling the header cover 68 to the water pipe mounting member 69 to which the first ends 50a of the plurality of water pipes 5 are connected.
- the header cover 68 has a bowl shape, and the water inlet 60A is formed in the header cover 68.
- the outer peripheral edge 68a at the front end of the header cover 68 is fitted to an upright portion 69a formed along the outer peripheral edge of the water pipe mounting member 69.
- the fitting portion is joined by, for example, a brazing method.
- a distance si between the water pipe mounting member 69 and the header cover 68 is regulated to a predetermined dimension using a bolt-shaped dimension regulating member 67.
- the dimension defining member 67 is located substantially at the center of the chamber 61A. At the tip of dimension-defining member 67 A step portion is formed, and a screw shaft portion 67a having a smaller diameter than other portions is formed. Since the screw shaft portion 67 a is screwed into the screw hole 69 b of the water pipe attachment member 69, the dimension defining member 67 is fixed to the water pipe attachment member 69. Instead of such a configuration, for example, the dimension defining member 67 can be fixed by screwing a nut (not shown) into the screw shaft portion 67a and tightening the nut.
- the header cover 68 is fastened by a bolt 66 that is screwed into a screw hole 67 b near the base end portion of the dimension defining member 67, and is thereby fixed to the dimension defining member 67.
- a part of the inner side surface of the header cover 68 is in contact with the end surface 67 c of the base end portion of the dimension defining member 67.
- the header structure of the present embodiment of the standing portion 69a of the water pipe mounting member 69, the end of the rounded portion with the radius R (the boundary between the rounded portion and the non-rounded portion), and the header When the edge Ed at the tip of the cover 68 coincides, stress concentration tends to occur in this portion.
- the side wall 70 e of the casing 7 is superimposed on the outside of the header cover 68 and is fixed to the dimension defining member 67 together with the header cover 68 by bolts 66.
- the header portion 6A can be appropriately assembled to the casing 7 while reducing the total number of bolts, so that the number of parts can be reduced and the assembling work can be facilitated. Further, a structure in which the header portion 6A is arranged in the casing 7 can be easily realized.
- FIG. 6 only the water inlet chamber 61 A of the header section 6 A is shown, and the hot water outlet chamber 61 B is omitted.
- the hot water discharge chamber 61B has the same configuration as the water intake chamber 61A.
- the basic configuration of the common chamber 61C is the same, and a detailed description thereof is omitted.
- the same reference numerals as those of the chamber 61A are assigned to the same elements as the incoming water chamber 61A.
- a shaft-shaped member having a screw hole 67e can also be used as the dimension defining member 67.
- the material 67 is installed.
- a part of the water pipe mounting member 69 sandwiched between the head of the bolt 66A and the end surface 67d of the stepped portion of the dimension defining member 67 (the part indicated by reference numeral nl) Even if a crack occurs, the effect of preventing or suppressing water leakage from this part can be obtained by covering this part with the head of the bolt 66A.
- the casing 7 is provided such that the bottom wall portion 70b closes a part above the primary heat exchanger 1.
- Combustion gas that has passed upward through the primary heat exchanger 1 enters the rear of the casing 7 and then enters the air inlet 72 of the rear wall 70d.
- a flow restricting portion 74 for restricting the flow of combustion gas is provided at the lower edge portion of the air supply port 72.
- the flow restricting portion 74 is formed by bending a portion connected to the lower edge portion of the air supply port 72 into a substantially L-shaped cross section, and the lower edge portion force of the air supply port 72 is also substantially directed forward.
- the flow restricting portion 74 is not provided over the entire length of the air supply port 72 in the longitudinal direction (lateral direction). There is a part n2 where the flow restricting part 74 is not provided. Unlike the exhaust port 71, the air supply port 72 extends substantially parallel to the plurality of water pipes 5.
- each water pipe 5 and casing 7 of the secondary heat exchanger B are formed longer than the lateral width of the can body 10 of the primary heat exchanger 1.
- the end near the header 6 ⁇ / b> A and the end near the header 6 ⁇ / b> B are protruding portions Sa and Sb that protrude laterally from the can 10.
- the protruding portion Sb is longer than the protruding portion Sa.
- the header portion 6A is approaching the water inlet 11a of the primary heat exchanger ⁇ 1.
- the hot-water supply device A1 of the present embodiment is a wall-hanging type in which the outer casing 4 is attached to a wall surface of a house, for example, and an outer pipe body (for illustration) for water entry and hot water is provided at the bottom of the outer casing 4 A plurality of tube connection portions 40 are provided for connecting (not shown).
- the water supplied from the outside is supplied to the water inlet 60A of the header section 6A via the pipe connecting section 40 and a pipe (not shown) connected thereto.
- the header 60B of header 6A The hot water discharged from the water is supplied to the inlet 11a of the primary heat exchanger.
- Hot water discharged from the primary heat exchanger outlet l ib is adjusted to a desired temperature by being mixed with water by a mixing valve (not shown) and then connected to an external pipe via the tube connecting portion 40. Supplied to the body.
- a mixing valve not shown
- the way of water flow for heat exchange is not limited. For example, a configuration may be adopted in which water is first introduced into the primary heat exchange, and then hot water that has passed through the primary heat exchange is supplied to the secondary heat exchanger B.
- a space is formed below the protruding portion Sb of the casing 7, and a control portion 8 is provided in this space.
- the control unit 8 is configured to include a circuit board on which a CPU, a memory attached to the CPU, and other electronic components are mounted.
- the amount of fuel gas supplied to the combustor 3 and the rotation of the blower fan 31 are configured. It performs operation control and signal processing control of each part of the hot water supply device A1, such as number control.
- the combustion gas rises and sequentially passes through the primary heat exchanger 1 and the secondary heat exchanger B. At that time, the sensible heat of the combustion gas is recovered in the primary heat exchanger 1, and the latent heat is recovered in the secondary heat exchange.
- the water supplied and circulated in the water pipe 11 and the water pipe 5 is heated, and hot water at a desired temperature is appropriately generated.
- Condensed water generated on the surface of the water pipe 5 is different from the above, and may be dropped downward without reaching the first end 50a.
- the combustion gas proceeds from the air supply port 72 of the rear wall 70d to the exhaust port 71 of the front wall 70c.
- the bottom wall portion 70b of the casing 7 covers the entire lower area of the plurality of water pipes 5. Therefore, the condensed water dripping from a portion other than the first end portion 50a of the plurality of water pipes 5 can also be appropriately received by the bottom wall portion 70b.
- the condensed water flows on the bottom wall portion 70b toward the discharge port 73 with high speed and force and is sent to the neutralizer 2. It becomes.
- condensed water may be generated on the outer surface.
- the header portion 6A is disposed in the casing 7, this condensed water is also received by the bottom wall portion 70b and sent to the neutralizer 2 from the discharge port 73 in the same manner as the condensed water described above. .
- parts other than the inside of the casing 7 can be contaminated with condensed water or condensed water.
- the combustion gas passes between the water pipes 5 and between the gaps 79a and 79b, and then the exhaust port. 7 Exhausted from 1 to the outside.
- the inner surfaces of the upper wall portion 70a and the bottom wall portion 70b of the plurality of water pipes 5 and the casing 7 are substantially parallel, and the gaps 79a and 79b have uniform widths s2 and s3 in the longitudinal direction. It has become. Therefore, an effect of appropriately preventing a decrease in heat exchange efficiency can be obtained. That is, unlike the present embodiment, the gaps 79a and 79b are set to have a substantially uniform width in the longitudinal direction. In this case, the width is large and a large amount of combustion gas passes through the portion. As a result, the heat recovery amount of the combustion gas power may be reduced. According to the present embodiment, such a fear can be appropriately eliminated and high heat exchange efficiency can be achieved.
- each water pipe 5 is longer than the width of the can 10 of the primary heat exchange 1, its heat transfer area is large. Therefore, the amount of latent heat recovered by secondary heat exchange can be increased, and the efficiency of heat exchange can be further increased.
- the length of the water pipe 5 is only increased, it is possible to suppress an increase in manufacturing cost without causing a complicated structure. According to the present embodiment, such a case is possible. Benefits. As shown in Fig.
- the water pipe 5 is lengthened,
- the casing 7 of the heat exchanger B has a protruding portion S b that protrudes from the can 10 of the primary heat exchanger 1.
- the control unit 8 is efficiently provided in the space below. Therefore, an increase in size of the hot water supply device A1 can be suppressed. Further, as described above, since the size of the protruding portion Sa opposite to the protruding portion Sb is small, there is an advantage that the size of the connecting pipe between the header portion 6A and the primary heat exchange can be shortened.
- This portion n2 serves to reduce the flow resistance of the combustion gas and promote the smooth inflow of the combustion gas into the casing 7.
- the combustion gas flow restricting means may be configured to have only the plate-like portion 74a without the rising portion 74b. Even in such a configuration, it is possible to prevent the combustion gas from proceeding directly toward the bottom wall portion 70b of the casing 7 immediately after passing through the air supply port 72, thereby suppressing the generation of condensed water evaporating noise. Is possible.
- each water pipe 5 of the secondary heat exchanger B has a small diameter, but the header portion 6A has the header portion 6B. Inclined to be lower. Therefore, the water in each water pipe 5 can be smoothly flowed toward the header portion 6A using this inclination, and discharged from the header portion 6A to the outside. As described with reference to FIG.
- the water that has flowed into the water inlet chamber 61A of the header section 6A can also remove the power of the water inlet 60A.
- the water flowing into the hot water discharge chamber 61B can be appropriately removed from the auxiliary drainage port 62. There is no problem that drainage workability is deteriorated because one of the inlet 60A and the outlet 60B is provided at a high position.
- this hot water supply device A1 although the upper wall portion 70a and the bottom wall portion 70b of the water pipe 5 and the casing 7 are inclined, the exhaust port 71 is not inclined and extends in the horizontal direction. For this reason, there is an advantage that the versatility of the hot water supply device A1 is high.
- the connection part for the exhaust port of the hot water supply device provided in the pipe space of the apartment is usually provided so as to correspond to the exhaust port extending in the horizontal direction. Therefore, this hot water supply device A1 is suitable for installation and use at a location where such an exhaust port connection is provided.
- FIG. 9 shows another embodiment of the hot water supply apparatus according to the present invention.
- the same or similar elements as those in the previous embodiment are denoted by the same reference numerals as in the previous embodiment.
- the hot water supply device A2 shown in FIG. 9 is a mounting type in which the outer casing 4 is used by being mounted on the ground or other floor, and a plurality of pipe bodies are provided on one side wall portion of the outer casing 4. A connection 40 is provided.
- the neutralizer 2 is arranged in the space below the protruding portion Sb of the secondary heat exchanger B, and the space is effectively used.
- the space below the projecting part Sa is used as piping space for primary heat exchange and secondary heat exchange, and piping for heat exchange is concentrated in this area.
- the space space below the protruding portion is referred to as hot water supply. It is possible to arrange other components of the device as appropriate and make effective use of the space. According to such a structure, the enlargement of the whole hot water supply apparatus is suppressed.
- the present invention is not limited to the embodiment described above. The specific structure of each part of the hot water supply apparatus according to the present invention can be varied in design in various ways.
- a pipe body other than a straight pipe for example, a U-shaped pipe can be used. If a U-shaped tube is used, the U-shaped tube itself can make a U-turn, so the hot water U-turn header 6B shown in the previous embodiment is not required and the secondary heat exchanger is configured.
- the construction can be simplified.
- the specific inclination angle of each water pipe of the secondary heat exchanger is not limited.
- the inner surface of the upper wall portion and the bottom wall portion of the casing is not limited in specific angle of inclination, as is the case with the water tube that is inclined at substantially the same angle as the water tube of the secondary heat exchanger.
- the hot water supply apparatus can also be configured as a reverse combustion type in which the combustion gas advances downward instead of the forward combustion type in which the combustion gas generated by the combustor advances upward.
- the secondary heat exchange is arranged below the primary heat exchange ⁇ .
- the hot water supply apparatus referred to in the present invention can be configured as a hot water supply apparatus for floor heating, snow melting, or other uses other than a hot water supply apparatus that supplies hot water to the kitchen or bathroom.
- the specific supply destination and use of hot water are not ask
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Geometry (AREA)
- Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
- Details Of Fluid Heaters (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/661,263 US7458340B2 (en) | 2004-12-22 | 2005-12-16 | Water heater |
DE112005003199T DE112005003199T5 (de) | 2004-12-22 | 2005-12-16 | Warmwasserbereiter |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004372321A JP4655621B2 (ja) | 2004-12-22 | 2004-12-22 | 給湯装置 |
JP2004-372321 | 2004-12-22 |
Publications (1)
Publication Number | Publication Date |
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WO2006068052A1 true WO2006068052A1 (ja) | 2006-06-29 |
Family
ID=36601652
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2005/023155 WO2006068052A1 (ja) | 2004-12-22 | 2005-12-16 | 給湯装置 |
Country Status (4)
Country | Link |
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US (1) | US7458340B2 (ja) |
JP (1) | JP4655621B2 (ja) |
DE (1) | DE112005003199T5 (ja) |
WO (1) | WO2006068052A1 (ja) |
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- 2005-12-16 WO PCT/JP2005/023155 patent/WO2006068052A1/ja not_active Application Discontinuation
- 2005-12-16 US US11/661,263 patent/US7458340B2/en not_active Expired - Fee Related
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU2012201784B2 (en) * | 2007-07-04 | 2013-12-12 | Fluidra Group Australia Pty Ltd | Water heating apparatus, especially for pools |
JP2010043785A (ja) * | 2008-08-12 | 2010-02-25 | Daikin Ind Ltd | 凝縮器 |
CN102906510A (zh) * | 2010-04-26 | 2013-01-30 | 林内株式会社 | 热交换器 |
CN102906510B (zh) * | 2010-04-26 | 2015-05-20 | 林内株式会社 | 热交换器 |
Also Published As
Publication number | Publication date |
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JP2006177623A (ja) | 2006-07-06 |
US7458340B2 (en) | 2008-12-02 |
US20080006226A1 (en) | 2008-01-10 |
JP4655621B2 (ja) | 2011-03-23 |
DE112005003199T5 (de) | 2007-11-22 |
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