JP2006271805A - Steam generator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a steam generator capable of efficiently generating a sufficient amount of steam while circulating and using hot water for generating the steam in a clean state and being suitably installed at the ceiling part of a bathroom or the like. <P>SOLUTION: The steam generator comprises a heat exchanger capable of generating the steam by the diffusion of the hot water from a diffusion means, a hot water circulation means for recovering the hot water diffused in the heat exchanger into a tank and supplying it to the diffusion means and an air blowing means capable of drying remaining water inside the tank by blowing air into the tank after the hot water inside the tank is discharged after the operation of the heat exchanger is ended. The air blowing means is constituted of a ventilation fan for ventilating the inside of a room where the steam generator is installed and a blowing fan arranged near the tank. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a steam generator that is installed on a ceiling portion of a bathroom and generates steam in the bathroom.

Conventionally, as a steam generator installed on the ceiling of a bathroom, for example, Patent Document 1 discloses. In the mist device (steam generating device) disclosed in Patent Document 1, a heat exchanger is disposed in an inclined state in a horizontally long apparatus main body, and a suction port is provided on the primary side of the heat exchanger and on the secondary side. A circulation fan is provided, and hot air heated to a high temperature by the heat exchanger is blown into the bathroom by the operation of the circulation fan. Further, a mist spraying means composed of a hot water supply pipe and a plurality of spray nozzles is disposed outside the vicinity of the suction port of the grill that closes the opening of the apparatus main body, and the mist (steam) from the mist spraying means into the bathroom. Is made to eject directly.
JP 2002-336327 A

  However, in such a steam generator, since the heat exchanger arranged in the main body of the apparatus does not generate steam, the hot water supplied from the water heater to the hot water supply pipe is ejected from the ejection nozzle as a mist. It is necessary to provide a mist jetting means that protrudes into the bathroom at the opening end of the apparatus main body, and it is difficult to generate a sufficient amount of steam in the bathroom in a short time. In addition, the design of the bathroom ceiling is not preferable.

  The present invention has been made in view of such circumstances, and the object thereof is to efficiently generate a sufficient amount of steam while circulating and using hot water for generating steam in a clean state, and in the bathroom. An object of the present invention is to provide a steam generator that can be suitably installed on a ceiling portion or the like.

  In order to achieve such an object, the invention described in claim 1 of the present invention includes a heat exchanger capable of generating steam by diffusing hot water from the diffusing means, and hot water diffused in the heat exchanger. Residual water in the tank can be dried by collecting the water in the tank and supplying it to the diffusing means, and by blowing into the tank after draining the hot water in the tank after the operation of the heat exchanger is completed. And an air blowing means.

  The air blowing means may be a ventilation fan for ventilating the room where the steam generator is installed, as in the invention described in claim 2, or the tank as in the invention according to claim 3. It is preferable that it is a ventilation fan arrange | positioned in the vicinity. According to a fourth aspect of the present invention, the tank is disposed at a lower portion of the heat exchanger so as to collect hot water flowing down from the heat exchanger, and is connected to the flange. It is preferable that it is formed with a storage part deeper than the collar part, and at least the inside of the storage part is blown by the blowing means. Further, as in the invention described in claim 5, it is preferable that the air blowing means operate in association with a heating means arranged at the bottom of the tank.

  According to the first aspect of the present invention, after the operation of the heat exchanger for generating steam is completed, after the hot water in the tank is drained, the blowing means is operated to blow into the tank. Residual water can be dried by blowing air to suppress bacterial growth due to residual water in the tank after the operation is complete, and the next time the heat exchanger is operated, clean water that does not mix bacteria in the hot water for steam generation A sufficient amount of steam can be efficiently generated by a diffusion type heat exchanger while maintaining a stable state, and it can be suitably installed on a ceiling portion of a bathroom.

  Further, according to the invention described in claim 2, in addition to the effect of the invention described in claim 1, since the air blowing means is constituted by the ventilation fan for ventilating the room, the ventilation fan can be used effectively and dedicated. The installation of the blower fan becomes unnecessary, and the structure of the apparatus can be simplified to obtain an inexpensive steam generator.

  According to the invention described in claim 3, in addition to the effect of the invention described in claim 1, since the blowing means is a blowing fan arranged in the vicinity of the tank, the dedicated blowing fan is effective for the bottom of the tank. The drying efficiency of residual water can be improved.

  According to the invention described in claim 4, in addition to the effects of the invention described in claims 1 to 3, the tank is formed by the flange portion and the storage portion, and at least the inside of the storage portion is blown by the blowing means. Therefore, the tank can be efficiently disposed in the casing, and the remaining water can be efficiently dried and removed by effectively blowing air to the storage portion where the remaining water is stored.

  Furthermore, according to the invention described in claim 5, in addition to the effects of the invention described in claims 1 to 4, the air blowing means operates in association with the heating means arranged at the bottom of the tank. The residual water in the section can be heated and evaporated by the operation of the heating means while being dried by the drying means, and the residual water in the tank can be removed more efficiently.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
1 to 7 show an embodiment of a steam generator according to the present invention, FIG. 1 is a basic configuration diagram thereof, FIG. 2 is a schematic perspective view showing an installation state in a bathroom, and FIG. 3 is a diagram of the steam generator. 4 is a schematic plan view showing a specific configuration, FIG. 4 is a view taken along line AA in FIG. 3, FIG. 5 is a longitudinal sectional view of the buffer tank, FIG. 6 is a plan view thereof, and FIG. It is a timing chart which shows.

  As shown in FIG. 1, a steam generator 1 according to the present invention includes a first heat exchanger 4 in which a large number of fins 4a are connected by a hot water supply pipe 4b, and a large number of fins 5a that are connected to a hot water supply pipe 5b. The steam and hot air generated by the second heat exchanger 5 and the first heat exchanger 4 and the second heat exchanger 5 are connected to the bathroom from the outlet 3b of the grill plate 3 (see FIG. 4). A blower fan 6 that blows out inside, a hot water circulating means 7 that collects hot water diffused on the first heat exchanger 4 and diffuses it again into the first heat exchanger 4, a ventilation fan 8, and the like are provided. .

  The hot water circulating means 7 is a diffusion pipe 9 as a diffusing means for diffusing hot water of a predetermined temperature on the fins 4a of the first heat exchanger 4 (including diffusion, discharge, jetting, jetting, spraying, spraying, etc.). And a buffer tank 10 as a tank for recovering the hot water diffused by the diffusion pipe 9, a circulation pump 11 that pumps up the hot water in the buffer tank 10 and supplies it to the diffusion pipe 9 through the pipe 12. ing. At this time, the buffer tank 10 includes a shallow-bottom bowl-shaped flange 10a that collects hot water flowing down from the first heat exchanger 4, and a deep-bottom storage section 10b that is connected to the flange 10a. A drainage pump 13 having the circulation pump 11 and a drainage pipe 14 connected thereto is disposed in the storage portion 10b.

  A water supply pipe 15 to which a water supply electromagnetic valve 16 is connected is connected to a predetermined position of the buffer tank 10, and the hot water supply pipe 4 b of the first heat exchanger 4 and the hot water of the second heat exchanger 5 are connected. A hot water supply return pipe 17a and a hot water supply return pipe 17b are connected to the supply pipe 5b, respectively, and a hot water supply solenoid valve 18 is connected to the hot water supply return pipe 17a. The hot water supply piping 17 a and the hot water return piping 17 b are connected to a hot water supply 19 such as a kerosene boiler with a circulation function or a gas hot water supply, and the water supply piping 15 is connected to a water supply or a water supply pipe in the hot water supply 19. Has been.

  The blower fan 6 is formed of, for example, a sirocco fan, a cross flow fan, or the like, and is configured to form a ventilation path 20 between the air inlet 3a and the air outlet 3b of the grill plate 3 by rotation of the fan motor 6a. Has been. Further, the ventilation fan 8 is formed by, for example, a sirocco fan or the like disposed in the fan case 8c, and a housing is formed between the intake port 3a and the discharge port 8b of the ventilation fan 8 by rotation of the fan motor 8a. A ventilation passage 21 which will be described later is formed through a connection port 23 provided in FIG. A louver 22 is disposed at the outlet 3b of the grill plate 3 so as to be opened and closed by the rotation of the louver motor 22a.

  Then, by arranging these components in the flat and thin casing 2, the steam generator 1 itself is formed in a flat and thin shape, and a wireless or wired remote control 25 is provided in the casing 2. Is connected to the control device 24. The control device 24 is connected to the output side thereof with the circulation pump 11, drainage pump 13, various solenoid valves 16, 18 and various motors 6a, 8a, 22a, etc. The remote controller 25 is connected. The steam generator 1 is configured to be operable in, for example, four operation modes of “mist heating”, “dry heating”, “drying”, and “ventilation” by the control signal of the control device 24.

  The steam generator 1 configured as described above is installed on the ceiling of the bathroom as shown in FIG. That is, the flat and thin casing 2 is suspended and installed on a ceiling panel 28 above the bathtub 27 that forms the bathroom ceiling, for example, by a plurality of suspension bolts on a building frame (not shown) above the bathroom 26. The hot water supply pipe 17a, the hot water return pipe 17b, and the water supply pipe 15 are arranged on the upper surface (back of the ceiling) of the ceiling panel 28, and the drainage pipe 14 is passed through the outer surface of the wall panel 29 of the bathroom 26 from the upper surface of the ceiling panel 28. Place the drain outlet at the bottom on the waterproof pan in the bathtub apron. Further, various cables 30 drawn from the housing 2 are wired on the upper surface side of the ceiling panel 28, and the ventilation duct 31 connected to the discharge port 8 b of the ventilation fan 8 is disposed on the upper surface side of the ceiling panel 28. Thereby, the steam generator 1 is installed on the ceiling panel 28 of the bathroom 26.

  3 to 6 show a specific structure of the steam generator 1. In the following description, the same parts as those in FIGS. 1 and 2 are denoted by the same reference numerals. As shown in FIGS. 3 and 4, the steam generator 1 has the casing 2 described above, and a grill provided with the inlet 3 a and the outlet 3 b in the lower surface opening 2 a of the casing 2. A plate 3 is detachably mounted. Further, the ventilation path 20 is formed in the casing 2 so as to communicate with the air outlet 3b from the air inlet 3a of the grill plate 3 by the partition wall 2b having a predetermined shape, and as shown in FIG. The first heat exchanger 4 is disposed on the 3a side (upstream side) in a state of being inclined to the left, and the second heat is transferred to the left side of the first heat exchanger 4 with its lower ends adjacent to each other. By arranging the exchanger 5 in an upwardly inclined state, the first heat exchanger 4 and the second heat exchanger 5 are V-shaped in a side view in the ventilation path 20 of the housing 2. Is arranged.

  Note that the diffusion pipe 9 is disposed on the upper side of the second heat exchanger 5 that is the downstream side of the first heat exchanger 4, and the hot water outlet 3 b diffused from the diffusion pipe 9. Splashing in the direction is prevented. The blower fan 6 is disposed on the downstream side of the heat exchanger 5 with a predetermined gap in the second heat exchanger 5 on the outlet 3b side (downstream side) of the ventilation path 20. By setting the blower fan 6 to rotate as indicated by an arrow A in FIG.

  The ventilation fan 8 operates in “dry” operation, normal ventilation in the bathroom 26, or 24-hour ventilation. The fan case 8c protrudes to the side of the housing 2 as shown in FIG. And communicated with the inside of the housing 2 through a connection port 23 (see FIG. 1) having a damper 23a provided on the side wall of the housing 2. When the fan motor 8a rotates, the air in the bathroom 26 sucked from the air inlet 3a of the grill plate 3 is opened by the damper 23a through the ventilation passage 21 formed in the housing 2. From the connection port 23 in the state, it passes through the ventilation fan 8 and the discharge port 8b and is discharged to the ventilation duct 31 (see FIG. 2).

  At this time, the ventilation passage 21 is formed in a substantially central portion in the front-rear direction which is the vertical direction of FIG. 3 of the housing 2 and passes through the ventilation path 20 and the rear side of the housing 2. This is constituted by a second ventilation passage 21 b that passes through a storage portion 10 b of the buffer tank 10, which will be described later, and a third ventilation passage 21 c that passes through the front portion of the housing 2. Of the ventilation passages 21 a to 21 c, the second ventilation passage 21 b in particular is a partition wall (not shown) or will be described later so that the air blown by the operation of the ventilation fan 8 passes well through the storage portion 10 b of the buffer tank 10. It is formed by a vent hole or the like provided in the lid 10d.

  The buffer tank 10 is disposed in the housing 2. As described above, the buffer tank 10 is formed by the flange portion 10a and the storage portion 10b, and the flange portion 10a is disposed below the adjacent lower end portions of the first heat exchanger 4 and the second heat exchanger 5. In addition, the storage portion 10b is disposed on one side in the longitudinal direction of both the heat exchangers 4 and 5 (the rear side portion of the housing 2). Further, as shown in FIGS. 5 and 6, the buffer tank 10 has a bottom surface of the flange portion 10a described above formed as an inclined surface and a substantially rectangular shape in plan view, and an upper surface opening portion as required. The bottom surface of the storage portion 10b covered with the lid body 10d is also formed with two inclined surfaces such that the substantially central portion in the longitudinal direction is the deepest portion 10c (deepest position).

  A drainage pump 13 is arranged at the deepest part 10c of the storage part 10b of the buffer tank 10, a circulation pump 11 is arranged at the side of the drainage pump 13, and on the upper end part side of the inclined surface of the storage part 10b. A water supply port 15a of a water supply pipe 15 to which a water supply electromagnetic valve 16 is connected is disposed. The drainage pump 13 has a dimension in which the suction port 13a provided on the lower surface side does not adversely affect the suction with respect to the bottom surface of the deepest portion 10c. It is attached.

  Moreover, the heater 32 as a heating means is arrange | positioned, for example in the outer surface side (or inner surface side) shown in FIG. 5 of the deepest part 10c of the storage part 10b. The heater 32 is formed in a rod-like (or plate-like) shape such as an electric heater or a sheathed heater so as to have water resistance, and is fixed to the outer surface of the deepest portion 10c with an adhesive or the like, for example, in a linear state (or a meandering state). And the lead wire 32a (refer FIG. 6) of this heater 32 is connected to the said control apparatus 24, and it supplies with the control signal of the control apparatus 24, and heats the deepest part 10c of the storage part 10b, and this deepest part The remaining water W (see FIG. 5) collected and stored in 10c is heated to the evaporation temperature. In addition, as a heating means arrange | positioned at the deepest part 10c of the storage part 10b, the hot water supply pipe | tube etc. which are connected not only to the heater 32 but are connected with the circulation port of the hot water heater 19 and circulated and supplied with hot water are used, for example. You can also

  Next, the ventilation fan 8, the circulation pump 11, the drainage pump 13, the damper 23a, the heater 32 (heating means), the water supply electromagnetic valve 16, and the like of the steam generator 1 configured as described above are ventilated for 24 hours. An example of the operation in this case will be described with reference to FIG. Each of these components operates according to a control signal from the control device 24. As shown in FIG. 7, first, when an operation switch (operation SW) for “mist heating” operation (not shown) is turned on, the ventilation fan 8 that is turned on (operated) for 24 hours is turned off, and the connection port The damper 23a provided to be openable and closable at 23 is closed from the open state, and the ventilation passages 21a to 21c are closed.

  In this state, the water supply electromagnetic valve 16 is opened and water is supplied into the buffer tank 10, and the circulation pump 11 is turned on (actuated) so that the water in the buffer tank tank 10 circulates in the hot water circulation means 7, Steam is generated when hot water of a predetermined temperature is diffused from the diffusion pipe 9 onto the first heat exchanger 4. Then, by the operation of the blower fan 6, the steam flows through the ventilation path 20 and is blown out from the outlet 3 b of the grill plate 3 into the bathroom 26, whereby the interior of the bathroom 26 is set to a mist heating state.

  On the other hand, the operation switch is turned off and the “mist heating” operation is completed, that is, the supply of hot water to the hot water supply pipes 4b and 5b of the first and second heat exchangers 4 and 5 is shut off, and both heat exchangers When the operation of 4, 5 is stopped, first, the drain pump 13 is turned on (actuated), the hot water remaining in the storage portion 10b of the buffer tank 10 is drained to the outside, and when the drain pump 13 is turned off, the damper 23a Is opened, the ventilation passages 21a to 21c are opened, and the ventilation fan 8 is also turned on. When the ventilation fan 8 is turned on, the air in the bathroom 26 is sucked from the air inlet 3a, flows through the ventilation passages 21a to 21c in the housing 2, passes through the ventilation fan 8, and passes through the ventilation duct 31 to the outside. To be discharged. At this time, the air flowing through the second ventilation passage 21b is blown into the storage portion 10b of the buffer tank 10, whereby the residual water W at the bottom of the storage portion 10b is dried.

  Further, after a predetermined time after the drainage pump 13 is turned off and the ventilation fan 8 (damper 23a) is turned on, the heater 32 is turned on (energized), and the heater 32 heats the bottom of the storage portion 10b to a predetermined temperature. The residual water W in the reservoir 10b is heated to a predetermined temperature by heating the bottom. At this time, the residual water W is evaporated by setting the heating temperature of the storage unit 10b by the heater 32 to the evaporation temperature in advance, so that after the mist heating operation is completed, a small amount of water in the storage unit 10b used in this operation is stored. The residual water W can be dried and evaporated, and the inside of the buffer tank 10 can be kept clean until the next operation.

  That is, in the case of this steam generator 1, when the operation switch is turned off after bathing in the “mist heating” operation state, first, the damper 23a is opened, and at the same time the ventilation fan 8 is turned on so that the humid air in the bathroom 26 is turned on. Is then discharged to the outside, and then blown into the reservoir 10b of the buffer tank 10 to dry the residual water W in the reservoir 10b, and the heater 32 is turned on for a predetermined time to evaporate the residual water W. Thereby, at the end of the mist heating operation, there is no remaining water W in the buffer tank 10, and it is possible to suppress the propagation of bacteria and the like by the remaining water W. It can be maintained in a clean state free of bacteria.

  In the above example, the ventilation fan 8 and the damper 23a are simultaneously turned on (opened) substantially simultaneously with the drain pump 13 being turned off, and the heater 32 is turned on after a predetermined time. For example, the two-dot chain line a in FIG. As shown, the ventilation fan 8 (damper 23a) can be turned on (opened) after the heater 32 has been turned on for a predetermined time, or the heater 32 and the ventilation fan 8 can be turned on simultaneously. In addition, the heater 32 as the heating means is operated so as to heat at a sterilization temperature lower than the evaporation temperature before the start of the “mist heating” operation, and even if the residual water W remains in the reservoir 10b, It may be sterilized, and the water supply electromagnetic valve 16 before the mist heating operation may be opened and the drain pump 13 may be turned on to drain the water, thereby further enhancing the clean state in the buffer tank 10.

  As described above in detail, in the steam generator 1 of the above-described embodiment, the ventilation fan 8 is installed after the operation of the first heat exchanger 4 for generating steam is completed (that is, the “mist heating” operation is completed). Since it is operated and blown to the storage unit 10b of the buffer tank 10, a small amount of residual water W in the storage unit 10b can be dried by blowing air, and bacteria remaining from the residual water W in the buffer tank 10 after the operation is finished. Breeding can be suppressed.

  In particular, since the operation of the ventilation fan 8 and the heater 32 disposed at the bottom of the storage unit 10 b of the buffer tank 10 operate in association with each other, for example, the remaining water W in the storage unit 10 b is dried by the ventilation fan 8 while the heater 32 is being dried. The residual water W can be effectively removed by evaporating by heating. As a result, the buffer tank 10 itself is kept clean, so that bacteria and the like are not mixed into the hot water for steam generation during the next mist heating operation, and the first heat exchanger 4 of the diffusion system is used with clean hot water. This makes it possible to efficiently generate a sufficient amount of steam.

  Also, a flange portion 10a of the buffer tank 10 is disposed below the adjacent lower end portions of the first heat exchanger 4 and the second heat exchanger 5, and the two heat exchangers 4, at the end portion of the flange portion 10a, Since the storage part 10b is arrange | positioned to the one side of the longitudinal direction of 5, the ventilation by the ventilation fan 8 can be favorably sent in the storage part 10b provided in the rear side part of the housing | casing 2 by the ventilation channel | path 21b. Thus, the drying efficiency of the residual water W can be further increased, and the heater 32 is disposed in the deepest part 10c of the buffer tank 10, so that a small amount of the residual water W in the storage part 10b can be evaporated in a short time. Can do. As a result, the interior of the reservoir 10b can be maintained more cleanly, and further purification of hot water used for steam generation can be achieved, and water droplets that are easy to drip onto the steam as in the conventional steam generator are included. This is also suppressed, and a comfortable mist heating state in the bathroom 26 can be easily obtained.

  Moreover, since the ventilation fan 8 for ventilating the inside of the bathroom 26 is used as a ventilation means, the ventilation fan 8 can be used effectively, and it is not necessary to separately install a dedicated ventilation fan or a ventilation fan. Simplified and inexpensive steam generator 1 can be obtained.

  Furthermore, the second heat exchanger 5 that has the hot water supply pipe 5a in the housing 2 and generates hot air has a substantially V shape in side view together with the first heat exchanger 4 for generating steam. Since the two heat exchangers 4 and 5 are efficiently arranged in the housing 2 to reduce the size of the housing 2 and are disposed in the ventilation path 20, the two heat exchangers 4 can be reduced. 5 and 5 can generate steam and warm air more efficiently. Further, the efficient arrangement of the flange portion 10a and the storage portion 10b of the buffer tank 10 in the housing 2 can further reduce the outer shape of the steam generator 1, and a drain pump as a drain means. 13 is used, it is not necessary to provide a drain outlet on the bottom surface of the buffer tank 10, and water leakage or the like at the ceiling panel 28 can be prevented. As a result, the steam generator 1 can be installed compactly and inexpensively on a bathroom ceiling with a small installation space, and can be suitably used as the steam generator 1 for a system bathroom or the like.

  By the way, in the said embodiment, although the ventilation fan 8 was used as a ventilation means which can ventilate the storage part 10b of the buffer tank 10, as a ventilation means which concerns on this invention, the exclusive ventilation fan which ventilates to the buffer tank 10, for example Can also be used. For example, as shown by a two-dot chain line in FIG. 5, the blower fan 34 is disposed on the inner surface of the end of the lid 10d (or side wall) of the buffer tank 10, and the blowing direction (ventilation passage 21b) of the storage unit 10b is set. It is preferable to set the air flow toward at least the deepest portion 10c of the storage portion 10b toward the bottom. When this dedicated blower fan 34 is arranged, it is only necessary to blow air to the storage part 10b of the buffer tank 10, and a small blower fan 34 can be used and can be arranged near the deepest part 10c where the remaining water W is stored. Thus, it is possible to obtain effects such as further improving the drying efficiency of the residual water W.

  Moreover, in the said embodiment, although the case where the ventilation fan 8 was combined was demonstrated as a ventilation means, for example, it is set as the structure which provides the fan for ventilation separately in the housing | casing 2 separately from the said ventilation fan 8. FIG. You can also. Furthermore, in the said embodiment, although three ventilation channel | paths 21a-21c were formed in the housing | casing 2, as shown, for example with the dashed-two dotted line of FIG. 6, it flows in into the storage part 10b from the collar part 10a of the buffer tank 10 The ventilation passage 21d may be formed, and in this case, air can be blown using the shape of the flange portion 10a, and drying of the flange portion 10a and the storage portion 10b can be performed more efficiently.

  Moreover, in the said embodiment, although the drainage pump 13 was used as a drainage means of the hot water in the buffer tank 10, for example, a drainage solenoid valve can also be used as a drainage means. When this drainage electromagnetic valve is used, as shown by a two-dot chain line in FIG. 1, a drainage port is provided in the reservoir 10b, and a drainage pipe 14 provided with a drainage electromagnetic valve 33 is connected to the drainage port. Then, by operating the drain electromagnetic valve 33 after the mist heating operation at the same timing as the drain pump 13 described above, the hot water in the reservoir 10b and the drain pipe 14 is drained to the outside.

  In addition, the structure of the 1st heat exchanger 4 in the said embodiment and the 2nd heat exchanger 5 is not restricted to the structure of the same form which has the fins 4a and 5a and the hot water supply pipes 4b and 5b as a heating means, For example, the heat exchangers 4 and 5 may be configured in different forms, and the heating means of both the heat exchangers 4 and 5 is not limited to the hot water supply pipes 4b and 5b, and other appropriate heating means may be adopted. it can. Further, the arrangement form of the heat exchangers 4 and 5 in the housing 2 is not limited to a completely V-shaped arrangement, and for example, the second heat exchanger 5 is arranged in a substantially horizontal state so as to cross the ventilation path 20. For example, an appropriate arrangement form can be adopted.

  Furthermore, the installation position of the steam generator 1 in the bathroom 26 in the above embodiment is not limited to the ceiling panel 28, and for example, it can be installed in a ceiling portion such as an upper end portion of the wall panel 29 and a corner portion of the ceiling panel 28. Furthermore, in the above embodiment, the form of the number and positions of the ventilation passages 21 by the ventilation fan 5, the whole of the hun buffer tank 10, or the shape of the flange portion 10a, the storage portion 10b, and the lid 10d itself are also examples. For example, a rectangular buffer tank 10 in a plan view or a buffer tank 10 that does not include a lid 10d to enhance air permeability, or a structure in which a waterproof pan is attached so as to cover the lower outer side of the buffer tank 10 are employed. The buffer tank 10 having an appropriate shape can be used according to the space shape in the housing 2.

  The present invention can be applied not only to a bathroom such as a system bathroom but also to a steam generator such as a sauna room or a shower room.

1 is a basic configuration diagram showing an embodiment of a steam generator according to the present invention. The schematic perspective view which shows the installation state to the bathroom Schematic plan view showing the specific structure of the steam generator AA line arrow view of FIG. Cross section of the buffer tank The plan view Timing chart showing an example of the same operation

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Steam generator, 2 ... Housing, 3 ... Grill plate, 3a ... Intake port, 3b ... Outlet, 4 ... 1st heat exchanger, 4a ... -Fins, 4b ... hot water supply pipe, 5 ... second heat exchanger, 5a ... fins, 5b ... hot water supply pipe, 6 ... blower fan, 7 ... hot water circulation means 8 ... Ventilation fan, 8a ... Fer motor, 8b ... Discharge port, 8c ... Fan case, 9 ... Diffusion pipe, 10 ... Buffer tank, 10a ... Hut, 10b・ ・ ・ Storage part, 10c ... Deepest part, 10d ... Lid, 11 ... Circulation pump, 13 ... Drain pump, 13a ... Suction port, 14 ... Drain pipe, 15. ..Water supply pipe, 15a ... Water supply port, 16 ... Water supply solenoid valve, 19 ... Water heater, 21, 21d ... Ventilation passage, 21a 1st ventilation path, 21b ... 2nd ventilation path, 21c ... 3rd ventilation path, 23 ... Connection port, 23a ... Damper, 24 ... Control device, 32 ... -Heater, 34 ... blower fan, W ... residual water.

Claims (5)

  A heat exchanger capable of generating steam by diffusing hot water from the diffusion means, hot water circulating means for recovering the hot water diffused in the heat exchanger into the tank and supplying the hot water to the diffusion means, and the heat exchange A steam generating device comprising: air blowing means capable of drying residual water in the tank by blowing into the tank after draining hot water in the tank after the operation of the vessel is completed.   The steam generator according to claim 1, wherein the blower is a ventilation fan for ventilating a room where the steam generator is installed.   The steam generator according to claim 1, wherein the blower is a blower fan disposed in the vicinity of the tank.   The tank is formed of a flange portion that is disposed at a lower portion of the heat exchanger and collects hot water flowing down from the heat exchanger, and a storage portion that is connected to the flange portion and deeper than the flange portion, The steam generator according to any one of claims 1 to 3, wherein at least the inside of the storage unit is blown by the blowing means.   The steam generator according to any one of claims 1 to 4, wherein the air blowing means operates in association with a heating means disposed at a bottom of the tank.

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