EP3012549A1 - Erwärmungsvorrichtung und sanitäre waschvorrichtung sowie ausrüstung damit - Google Patents

Erwärmungsvorrichtung und sanitäre waschvorrichtung sowie ausrüstung damit Download PDF

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Publication number
EP3012549A1
EP3012549A1 EP14813083.4A EP14813083A EP3012549A1 EP 3012549 A1 EP3012549 A1 EP 3012549A1 EP 14813083 A EP14813083 A EP 14813083A EP 3012549 A1 EP3012549 A1 EP 3012549A1
Authority
EP
European Patent Office
Prior art keywords
heat exchange
flow path
buffer part
heating device
temperature buffer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP14813083.4A
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English (en)
French (fr)
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EP3012549A4 (de
EP3012549B1 (de
Inventor
Yasuhiro Kuniki
Songda ZHANG
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Corp
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Panasonic Corp
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Filing date
Publication date
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Publication of EP3012549A1 publication Critical patent/EP3012549A1/de
Publication of EP3012549A4 publication Critical patent/EP3012549A4/de
Application granted granted Critical
Publication of EP3012549B1 publication Critical patent/EP3012549B1/de
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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
    • F24H9/00—Details
    • F24H9/20—Arrangement or mounting of control or safety devices
    • F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
    • F24H9/2014—Arrangement or mounting of control or safety devices for water heaters using electrical energy supply
    • F24H9/2028—Continuous-flow heaters
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
    • A47K13/00—Seats or covers for all kinds of closets
    • A47K13/24—Parts or details not covered in, or of interest apart from, groups A47K13/02 - A47K13/22, e.g. devices imparting a swinging or vibrating motion to the seats
    • A47K13/30—Seats having provisions for heating, deodorising or the like, e.g. ventilating, noise-damping or cleaning devices
    • A47K13/305—Seats with heating devices
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
    • E03D9/00—Sanitary or other accessories for lavatories ; Devices for cleaning or disinfecting the toilet room or the toilet bowl; Devices for eliminating smells
    • E03D9/08—Devices in the bowl producing upwardly-directed sprays; Modifications of the bowl for use with such devices ; Bidets; Combinations of bowls with urinals or bidets; Hot-air or other devices mounted in or on the bowl, urinal or bidet for cleaning or disinfecting
    • 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
    • F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
    • F24H1/101—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium using electric energy supply
    • F24H1/102—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium using electric energy supply with resistance
    • 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
    • F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
    • F24H1/12—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium
    • F24H1/121—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium using electric energy supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/0005—Details for water heaters
    • F24H9/001—Guiding means
    • F24H9/0015—Guiding means in water channels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/18—Arrangement or mounting of grates or heating means
    • F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
    • F24H9/1818—Arrangement or mounting of electric heating means
    • 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
    • F24H2250/00—Electrical heat generating means
    • F24H2250/02—Resistances

Definitions

  • the present invention relates to a heating technique, and more particularly, to a heating device, and a sanitary washing device and equipment using the same.
  • a temperature of water to be jetted from a washing nozzle is stabilized before jetting.
  • a temperature stabilizer is provided between an emission part of the heat exchanger and the washing nozzle for absorbing temperature nonuniformity.
  • a sanitary washing device having a configuration in which a water entry part of a temperature stabilizer is formed in a circular arc shape to accelerate mixing of warm water in the temperature stabilizer to thereby quickly make a temperature of warm water emitted from the temperature stabilizer uniform (for example, PTL 3).
  • the temperature stabilizer disclosed in each of the above patent literatures temporarily stores and mixes water heated by a heating device inside the temperature stabilizer to make the water temperature uniform.
  • the temperature stabilizer is required to have a volume (capacity) for ensuring a certain amount of warm water.
  • a conventional sanitary washing device typically employs a structure in which the temperature stabilizer and the heating device are separately placed.
  • a temperature stabilizer of a sanitary washing device is indispensable for comfortably and safely performing warm water washing.
  • the temperature stabilizer and the heating device may be integrated to achieve downsizing.
  • the temperature stabilizer and the heating device are integrated, it is necessary to ensure a space for disposing the temperature stabilizer having a considerable volume inside the heating device in design. That is, in the integration in a conventional heating device, even when a relationship in disposition between a heating element and a flow path is made optimal to efficiently perform heat exchange, a configuration such as a temperature stabilizer in which a certain capacity to eliminate temperature nonuniformity is ensured is required. Thus, it is not possible to achieve space-saving and thus not possible to achieve downsizing. Therefore, an object to downsize a water heater while ensuring a space for disposing a temperature stabilizer has not yet been solved.
  • the present invention provides a heating device that enables a more stable temperature of flowing-out warm water and also enables downsizing, and a sanitary washing device and equipment provided with the same.
  • the heating device of the present invention is provided with a housing which has an inlet port for allowing fluid to flow in and an outlet port for allowing the fluid to flow out, a heat exchange flow path which is placed inside the housing and communicates with the inlet port, and a heater which heats the fluid inside the heat exchange flow path.
  • the heating device is further provided with a temperature buffer part which is placed inside the housing and communicates with the outlet port and one or more through holes which are formed between the heat exchange flow path and the temperature buffer part, and communicating between the heat exchange flow path and the temperature buffer part.
  • the heat exchange flow path guides the fluid flowing in through the inlet port and allows the fluid after being heated to flow into the temperature buffer part through the through holes, and the temperature buffer part guides the fluid flowing in through the through holes to the outlet port.
  • the temperature buffer part is placed inside the housing, and the heat exchange flow path and the temperature buffer part communicate with each other through the through holes. Accordingly, the temperature of warm water flowing into the temperature buffer part from the heat exchange flow path can be made uniform in the temperature buffer part. Further, a space occupied by the temperature buffer part can be reduced. As a result, it is possible to achieve the heating device in which the temperature of warm water is made uniform, and the heat exchange flow path and the temperature buffer part are integrated to downsize the heating device.
  • a configuration of a heating device in a first exemplary embodiment of the present invention will be described with reference to FIGS. 1 to 2F .
  • water is described as an example of fluid flowing through the inside of the heating device.
  • the fluid is not limited to water.
  • liquid other than water such as water added with a medicine or washing agent and functional water or gas may be used.
  • FIG. 1 is a perspective view of the heating device according to the first exemplary embodiment of the present invention.
  • FIG. 2A is a front view of the heating device according to the first exemplary embodiment.
  • FIG. 2B is a top view of the heating device.
  • FIG. 2C is a bottom view of the heating device.
  • FIG. 2D is a sectional view taken along line 2D-2D of FIG. 2C.
  • FIG. 2E is a sectional view taken along line 2E-2E of FIG. 2D.
  • FIG. 2F is a sectional view taken along line 2F-2F of FIG. 2D .
  • heating device 1 of the present exemplary embodiment includes at least housing 13, and mixing rib 22, heat exchange flow path 24, heater 23, temperature buffer part 25, and the like which are disposed inside housing 13. Through hole 21 is formed between heat exchange flow path 24 and temperature buffer part 25. Water heated by heater 23 flows through temperature buffer part 25. As illustrated in FIG. 1 , heating device 1 is formed in, for example, a rectangular parallelepiped shape, and both side faces on long sides thereof are placed in up and down directions.
  • Housing 13 is provided with inlet port 11 which is located on a lower part of housing 13 for allowing water to flow in and outlet port 12 which is located on an upper part of housing 13 for allowing water to flow out.
  • inlet port 11 and outlet port 12 are disposed on the same side face in right and left directions of housing 13 is illustrated.
  • Heat exchange flow path 24 is formed inside housing 13 and communicates with inlet port 11.
  • Heater 23 is, for example, a flat heater made of ceramic. As illustrated in FIGS. 2E and 2F , heater 23 is partially supported and disposed inside heat exchange flow path 24 so that an entire face of heater 23 is not in contact with both wall surface 26a and wall surface 26b of heat exchange flow path 24. Heater 23 heats water flowing inside heat exchange flow path 24 by both faces of heater 23 as main heating surfaces. The water flowing inside heat exchange flow path 24 flows up along both the faces of heater 23 up to an upper end of heater 23, and water flowing up along one of the faces and water flowing up along the other face are then joined. Then, the water passes through through hole 21 which faces an end face of heater 23 and flows into temperature buffer part 25. Temperature buffer part 25 is placed above heat exchange flow path 24 inside housing 13 and communicates with outlet port 12. As described above, through hole 21 is formed between heat exchange flow path 24 and temperature buffer part 25, and communicates between heat exchange flow path 24 and temperature buffer part 25.
  • mixing rib 22 is disposed inside temperature buffer part 25 to narrow a flow path for warm water flowing in through through hole 21.
  • a number of mixing ribs 22 is equal to a number of through holes 21 (five, in FIG. 2D ).
  • Mixing rib 22 is disposed between the corresponding adjacent through hole 21 and outlet port 12.
  • Mixing rib 22 may have, for example, a shape whose cross-sectional width increases toward outlet port 12 (not illustrated). This shape reduces a distance between an inner wall of temperature buffer part 25 and mixing rib 22 toward outlet port 12 and thus further obstructs a water flow.
  • water having temperature nonuniformity can be sufficiently mixed inside temperature buffer part 25. That is, warm water flows through a narrow flow path formed in temperature buffer part 25 by mixing rib 22 and a wide flow path on the other part. Accordingly, it is possible to mix the warm water to eliminate temperature nonuniformity. A specific operation will be described below.
  • Heat exchange flow path 24 guides water flowing in through inlet port 11 and allows water heated by heater 23 to flow into temperature buffer part 25 through through hole 21. Further, temperature buffer part 25 guides the heated water flowing in through through hole 21 to outlet port 12 while mixing the heated water by mixing rib 22 so as to be fed to, for example, a nozzle of a sanitary washing device.
  • a space formed by housing 13 is used as heat exchange flow path 24, the present invention is not limited to this configuration.
  • heat exchange flow path 24 may be configured as a single member and independently placed inside housing 13. This configuration makes it possible to more accurately set a width of heat exchange flow path 24, that is, a gap size between heat exchange flow path 24 and heater 23.
  • the heating device of the present exemplary embodiment is configured as described above.
  • FIG. 3 is a schematic view of a flow direction of water in the heating device having the plurality of through holes in the present exemplary embodiment.
  • water in region 24e tends to flow into temperature buffer part 25 through through hole 21d having a relatively small pressure loss.
  • long-time heating of water in region 24e is prevented.
  • scale is adhered to the flow path to narrow the flow path or is adhered to the face of the heater to cause an adverse effect on the hearting surface.
  • FIG. 4 is a schematic view of a flow direction of water in a temperature buffer part having the plurality of mixing ribs in the present exemplary embodiment.
  • FIG. 4 illustrates, in an enlarged manner, a vicinity of temperature buffer part 25 which has mixing ribs 22a to 22d each having a rectangular cross section.
  • FIG. 5 is a schematic view of the entire flow direction of water inside the heat exchange flow path and the temperature buffer part having the plurality of mixing ribs in the present exemplary embodiment.
  • the number of through holes is equal to the number of mixing ribs, specifically, four.
  • mixing rib 22a is disposed adjacent to through hole 21a at a side facing outlet port 12.
  • mixing ribs 22b, 22c, and 22d are respectively disposed corresponding to adjacent through holes 21b, 21c, and 21d at the side facing outlet port 12.
  • the water flowing into temperature buffer part 25 and the water inside temperature buffer part 25 are easily mixed. Accordingly, the water flowing into temperature buffer part 25 from heat exchange flow path 24 and the water previously present inside temperature buffer part 25 are easily mixed to have a uniform temperature. As a result, it is possible to allow water having a uniform temperature to flow out through outlet port 12 of heating device 1.
  • heater 23 may be placed on a wall surface of heat exchange flow path 24 or may be placed on an outer wall surface of heat exchange flow path 24 as specifically described below. That is, heater 23 may be placed at any position that enables heater 23 to heat water inside heat exchange flow path 24.
  • FIG. 6A is a schematic view of a heater according to a modification of the first exemplary embodiment of the present invention when disposed on an inner side of one side of the housing.
  • FIG. 6B is a schematic view of the heater when disposed on an outer side of one side of the housing.
  • FIG. 6C is a schematic view of the heater when disposed sideways on a bottom of the heat exchange flow path.
  • heater 23 is brought into intimate contact with one inner wall inside heat exchange flow path 24 with heating surface 23a facing heat exchange flow path 24.
  • This configuration makes it possible to effectively heat water flowing through heat exchange flow path 24. Further, heater 23 can be easily attached and stably disposed.
  • heater 23 may be stuck to one outer wall surface outside heat exchange flow path 24 with heating surface 23a stuck to the outer wall surface.
  • sticking heater 23 to one outer wall outside heat exchange flow path 24 corresponds to sticking heater 23 to an outer wall of housing 13. This configuration increases a capacity of heat exchange flow path 24, which enables an increase in an amount of warm water.
  • heater 23 may be disposed, for example, sideways on the bottom of heat exchange flow path 24 with heating surface 23a facing heat exchange flow path 24. This configuration makes it possible to effectively heat water flowing through heat exchange flow path 24 in the same manner as in the configuration illustrated in FIG. 6A . Further, heater 23 can be easily attached and stably disposed.
  • the present invention is not limited to examples as illustrated in FIGS. 6A to 6C in which only one heater 23 is disposed with respect to heat exchange flow path 24.
  • One or more heaters 23 may be disposed. This configuration makes it possible to more effectively heat water flowing through heat exchange flow path 24.
  • the present invention is not limited to this configuration.
  • the heater may be stuck to one outer wall outside the heat exchange flow path.
  • the heater is placed on the outer wall of the heat exchange flow path located between the housing and the heat exchange flow path.
  • inlet port 11 and outlet port 12 are disposed on the housing in such a manner that a flow direction of water flowing into heat exchange flow path 24 through inlet port 11 is opposite to a flow direction of water flowing out to outlet port 12 from temperature buffer part 25 as illustrated in FIGS. 2D , 3 and 5
  • the present invention is not limited to this configuration.
  • inlet port 11 and outlet port 12 may be disposed on housing 13 in such a manner as described below with reference to FIGS. 7A and 7B .
  • FIG. 7A is a schematic view of a heating device in which a flow direction of water flowing in through an inlet port is the same as a flow direction of water flowing out through an outlet port in a modification of the present exemplary embodiment.
  • FIG. 7B is a schematic view of a heating device in which a flow direction of water flowing in through an inlet port intersects a flow direction of water flowing out through an outlet port in the modification.
  • inlet port 11 and outlet port 12 of housing 13 may be disposed in such a manner that the flow direction of water flowing in through inlet port 11 is the same as the flow direction of water flowing out through outlet port 12. This configuration enables stabilization of the temperature of flowing-out water in the same manner as above.
  • inlet port 11 and outlet port 12 of housing 13 may be disposed in such a manner that the flow direction of water flowing in through inlet port 11 intersects the flow direction of water flowing out through outlet port 12.
  • intersect is, for example, a relationship in which water flows into inlet port 11 along a horizontal direction and flows out through outlet port 12 along a vertical direction, as illustrated in FIG. 7B .
  • the intersection is not limited this relationship. It is needless to say that any oblique direction that intersects the horizontal direction may be employed. Accordingly, the same effect as above can be obtained.
  • a shape of mixing rib 22 may be, for example, a columnar shape or a spherical shape.
  • the cross-sectional shape of mixing rib 22 may be a rectangular shape, a circular shape, or an elliptical shape. That is, any shape that enables mixing rib 22 to restrict a water flow to sufficiently mix water having a nonuniform temperature inside temperature buffer part 25 may be employed.
  • mixing rib 22 may have a substantially crescent cross section (including a crescent cross section).
  • an upstream side of mixing rib 22 has a rounded projecting shape with no angular part and thus has less pressure loss.
  • a downstream side of mixing rib 22 is formed in a substantially recessed shape (including a recessed shape) toward outlet port 12. Accordingly, when water flows in through through hole 21 and flows through temperature buffer part 25 toward outlet port 12, a washing water flows along the rounded projecting shape of mixing rib 22 and then flows toward an inner side of the recessed part so as to be mixed. That is, the shape of mixing rib 22 illustrated in FIG. 2D enables further acceleration of mixing to make the temperature uniform.
  • heating device 1 is provided with temperature buffer part 25 which communicates with outlet port 12 and the plurality of through holes 21 which are placed between heat exchange flow path 24 and temperature buffer part 25 to allow heat exchange flow path 24 and temperature buffer part 25 to communicate with each other.
  • the plurality of through holes 21 are formed at intermediate positions between heat exchange flow path 24 and temperature buffer part 25.
  • the plurality of mixing ribs 22 are disposed on the downstream side of the respective through holes 21.
  • Each of mixing ribs 22 has a cross-sectional shape having a substantially rounded projecting part with no angular part on the upstream side and has a cross-sectional shape having a substantially recessed part on the downstream side. This configuration has high mixing and agitation effects with less pressure loss. Thus, it is possible to make the temperature of warm water uniform with smaller temperature nonuniformity.
  • the heat exchange flow path and the temperature buffer part can be integrated to achieve further downsizing.
  • each mixing rib is disposed corresponding to each through hole at the side facing the outlet port
  • the present invention is not limited to this configuration.
  • the number of mixing ribs may not be equal to the number of through holes.
  • each mixing rib is not necessarily disposed corresponding to each through hole at the side facing the outlet port.
  • Each mixing rib may be disposed at any position that enables the mixing rib to effectively obstruct a water flow to effectively mix water having temperature nonuniformity inside the temperature buffer part.
  • the temperature buffer part is placed inside the housing, and the through hole which allows the heat exchange flow path and the temperature buffer part to communicate with each other is formed.
  • This configuration makes it possible to make the temperature of warm water flowing into the temperature buffer part uniform. Further, a space occupied by the temperature buffer part can be reduced as much as possible.
  • the heating device that is provided with both the heat exchange flow path and the temperature buffer part can be easily downsized.
  • the equipment of the present exemplary embodiment is, for example, a sanitary washing device, a washstand, a bathing device such as a bathtub, an instantaneous water heater, or a water server provided with the heating device described in the above first exemplary embodiment. Further, the equipment includes equipment that requires providing fluid having a stable temperature.
  • the sanitary washing device in the present exemplary embodiment is an instantaneous sanitary washing device which heats flowing water to generate warm water and differs from a storage type sanitary washing device which stores warm water in a tank.
  • An instantaneous sanitary washing device typically has a water flow amount of approximately 400 to 500 ml per one minute and generates warm water by a heating device to wash the human private parts.
  • FIG. 8 is a perspective view of the sanitary washing device according to the second exemplary embodiment of the present invention to which the heating device is attached.
  • sanitary washing device 100 of the present exemplary embodiment includes at least toilet seat body 101, a water feeder (not illustrated), operation part 104, nozzle 105, and the like.
  • Toilet seat body 101 is pivotably connected to seating part 102 to allow seating part 102 to pivot on toilet seat body 101.
  • Toilet seat body 101 is mounted on Western-style toilet bowl 103.
  • Heating device 1 described in the first exemplary embodiment is disposed inside toilet seat body 101.
  • heating device 1 is disposed in such a manner that the flat heater of a heat exchanger vertically stands inside toilet seat body 101. Accordingly, inlet port 11 of heating device 1 is located on a lower side of heat exchange flow path 24, and outlet port 12 is located on an upper side of heat exchange flow path 24.
  • a user When washing is performed using sanitary washing device 100, a user first operates operation part 104. Accordingly, the water feeder feeds water to heating device 1 from a water feed source.
  • the water fed to heating device 1 flows into heating device 1 through inlet port 11 located on the lower side and flows up in heat exchange flow path 24 along the heating surface which vertically stands while being heated by efficient heat exchange by forced convection and natural convection functions. Then, as described above, water flows are joined on the upper end of heater 23 and heated to have a uniform temperature by heat exchange flow path 24 and temperature buffer part 25 which communicate with each other through through hole 21. Then, warm water having a uniform temperature, which is instantaneously heated by heating device 1 is jetted from nozzle 105 of sanitary washing device 100. In this manner, washing to the human body is performed.
  • the present exemplary embodiment makes it possible to further downsize equipment such as sanitary washing device 100 by incorporating heating device 1 having a small size. Further, it is possible to generate water having a uniform temperature with less temperature nonuniformity by heating device 1 and jet the generated water from nozzle 105. Accordingly, it is possible to achieve equipment such as sanitary washing device 100 having an excellent feeling of use.
  • a sanitary washing device has both a used state and an unused state. Thus, water is not continuously circulated through the sanitary washing device. Therefore, it is necessary to eject warm water having an optimal temperature when needed. In view of this, it is possible to instantaneously generate warm water for washing the human body having less temperature nonuniformity by the heat exchanger of the present invention to achieve a comfortable feeling of use.
  • the heating device of the present invention is provided with a housing which has an inlet port for allowing fluid to flow in and an outlet port for allowing the fluid to flow out, a heat exchange flow path which is placed inside the housing and communicates with the inlet port, and a heater which heats the fluid inside the heat exchange flow path.
  • the heating device is further provided with a temperature buffer part which is placed inside the housing and communicates with the outlet port and one or more through holes which are formed between the heat exchange flow path and the temperature buffer part, and communicating between the heat exchange flow path and the temperature buffer part.
  • the heat exchange flow path may guide the fluid flowing in through the inlet port and allow the fluid after being heated to flow into the temperature buffer part through the one or more through holes
  • the temperature buffer part may guide the fluid flowing in through the one or more through holes to the outlet port.
  • the temperature buffer part is placed, and the heat exchange flow path and the temperature buffer part communicate with each other through the one or more through holes.
  • This configuration makes it possible to allow water to more uniformly flow into the temperature buffer part through the through hole(s).
  • the temperature of warm water flowing into the temperature buffer part from the heat exchange flow path can be made uniform in the temperature buffer part.
  • a space occupied by the temperature buffer part can be reduced.
  • the temperature buffer part may further include a mixing rib.
  • the flow of warm water flowing inside the temperature buffer part is obstructed by the mixing rib.
  • warm water flowing into the temperature buffer part through the through hole(s) and flowing inside the temperature buffer part is further mixed in a gap between the mixing rib and an inner wall of the temperature buffer part and in a part of the temperature buffer part having no mixing rib. Accordingly, it is possible to allow warm water having a more uniform temperature to flow out through the outlet port.
  • the mixing rib may be disposed at a position between the outlet port and at least one of the through hole(s) located farthest from the outlet port. This configuration makes it possible to further effectively obstruct the flow direction of warm water flowing inside the temperature buffer part. As a result, warm water having temperature nonuniformity can be further mixed to be uniform.
  • the heater may be disposed inside the heat exchange flow path at a position that is not in contact with a wall surface of the heat exchange flow path. This configuration makes it possible to heat water by both faces of the heater. As a result, it is possible to increase the speed of heating to instantaneously supply warm water.
  • the inlet port and the outlet port of the housing may be disposed at positions that make a flow direction of the fluid flowing into the heat exchange flow path through the inlet port to be opposite to a flow direction of the fluid flowing out to the outlet port from the temperature buffer part.
  • a flow direction of the fluid flowing into the temperature buffer part through the through hole(s) may intersect a flow direction of the fluid inside the temperature buffer part.
  • the sanitary washing device of the present invention may include a toilet seat body which is mounted on a Western style toilet bowl and pivotably connected to a seating part to allow the seating part to pivot on the toilet seat body, the above heating device which is disposed inside the toilet seat body, a water feeder which feeds water from a water feed source to the heating device, and a nozzle which washes a human body using warm water heated by the heating device.
  • This configuration makes it possible to jet warm water having a uniform temperature generated by the heating device from the nozzle. Further, downsizing of the sanitary washing device can be achieved by incorporating the heating device having a small size.
  • Equipment of the present invention may be provided with the above heating device.
  • This configuration makes it possible to jet warm water having a uniform temperature generated by the heating device from the equipment. Further, downsizing of the equipment can be achieved by incorporating the heating device having a small size.
  • the present invention is useful in the fields of such as a heating device that is small and requires generation of warm water having a uniform temperature, and a sanitary washing device and equipment provided with the same.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Public Health (AREA)
  • Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Water Supply & Treatment (AREA)
  • Bidet-Like Cleaning Device And Other Flush Toilet Accessories (AREA)
  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
EP14813083.4A 2013-06-20 2014-06-19 Durchlauferhitzer und sanitäre waschvorrichtung mit einem derartigen durchlauferhitzer Active EP3012549B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201310246715.0A CN104236065B (zh) 2013-06-20 2013-06-20 加热装置和具有该加热装置的设备
PCT/JP2014/003296 WO2014203538A1 (ja) 2013-06-20 2014-06-19 加熱装置とそれを備える衛生洗浄装置および設備

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CN104818754A (zh) * 2015-04-01 2015-08-05 厦门科牧智能技术有限公司 一种电子坐便器水箱恒温加热系统

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JPS5657420A (en) * 1979-10-13 1981-05-19 Toto Ltd Locally washing apparatus
JPH02311632A (ja) * 1989-05-25 1990-12-27 Matsushita Electric Works Ltd 温水洗浄便座の温水加熱装置
JPH04278142A (ja) * 1991-03-01 1992-10-02 Hitachi Aic Inc 流体用熱交換器　　　　　　
CN1096533C (zh) * 1995-07-07 2002-12-18 松下电器产业株式会社 温水冲洗装置
JP3331899B2 (ja) * 1997-04-02 2002-10-07 松下電器産業株式会社 人体局部洗浄装置
JP2000001896A (ja) 1998-06-18 2000-01-07 Matsushita Electric Ind Co Ltd 温水洗浄装置
JP3675249B2 (ja) * 1998-09-14 2005-07-27 東陶機器株式会社 瞬間加熱温水装置
JP3714060B2 (ja) 1999-07-01 2005-11-09 東陶機器株式会社 熱交換装置およびそれを用いた衛生洗浄装置
TW200638923A (en) * 2005-05-13 2006-11-16 zheng-hui Wu Hydropathic apparatus for the large intestine and auto bidet having the same
JP5439730B2 (ja) 2008-03-27 2014-03-12 アイシン精機株式会社 熱交換ユニット
JP2012002491A (ja) * 2009-09-07 2012-01-05 Panasonic Corp 熱交換器
JP5573064B2 (ja) * 2009-09-17 2014-08-20 アイシン精機株式会社 人体局部洗浄装置
JP2011069166A (ja) * 2009-09-28 2011-04-07 Toto Ltd 衛生洗浄装置
JP2011143781A (ja) * 2010-01-13 2011-07-28 Sanden Corp 加熱装置
CN102469635A (zh) * 2010-11-18 2012-05-23 格诺国际有限公司 家电产品用瞬间加热加热器组件
GB2525182B (en) * 2014-04-14 2018-10-03 Norcros Group Holdings Ltd An instantaneous electric water heater, a heat exchanger and an electric shower

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CN104236065B (zh) 2017-12-01
JP6299758B2 (ja) 2018-03-28
EP3012549A4 (de) 2016-06-01
EP3012549B1 (de) 2019-08-07
WO2014203538A1 (ja) 2014-12-24
ES2749226T3 (es) 2020-03-19
CN104236065A (zh) 2014-12-24
JPWO2014203538A1 (ja) 2017-02-23

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