JP2004309058A - Bathroom heating and drying apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a safer bathroom heating and drying apparatus suppressing pressure buildup in a circulating line for heating during heating operation. <P>SOLUTION: This bathroom heating and drying apparatus is provided with a passage selector valve 23 and a circulating water tank 25 at a changeover mechanism for changing over to a bathtub reheating circulating line and a heating circulating line passing via a heating terminal 6, and constituted to insert and connect a heating return pipe 20 from the heating terminal 6 on the upper side of the circulating water tank 25, a return pipe 16 of the reheating circulating line on the lower side, and a bathtub return pipe 18 returning to the circulating water tank 25 from a circulating port of the bathtub through a shutoff valve 24, from the upper side of the circulating water tank 25 respectively. At the start of heating operation, the shutoff valve 24 is opened to drain water in the circulating water tank 25 to the bathtub from the bathtub return pipe 18 to form an air layer at the upper part in the circulating water tank 25. When the heating circulating line is filled with water, the shutoff valve 24 is closed to perform heating operation, and when pressure is built up in piping by the rise of hot water temperature during heating operation, the air layer at the upper part in the circulating water tank 25 is contracted to suppress pressure buildup. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates generally to a bathroom heating device for home use.
[0002]
[Prior art]
As a hot water heating and drying device in a bathroom, generally, as shown in FIG. 3A, a heating terminal 6 is installed on a ceiling surface of the bathroom 3 and the like, and the heating terminal 6 and a bath with hot water supply installed outdoors. A multifunction machine 30 having a heating combustor 26 in the kettle was connected with a piping via a heating circulation path composed of a heating forward pipe 19 and a heating return pipe 20, and the heating terminal 6 was connected to the heating combustion section 26. There is known a heating heat exchanger 8 and an air blowing mechanism 7 (not shown) driven by electricity for heating the air with the heating heat exchanger 8 to generate hot air. (For example, see Patent Document 1).
[0003]
In the above-mentioned heating / drying apparatus, when a command for heating and drying is issued by a switch operation of the remote controller 21 (not shown) or the like, the water in the circulating water tank 25 passes through the heating combustion unit 26 by the pump built in the multifunction device 30. The heated water is sent to the heating terminal 6 as hot water. In the heating terminal 6, the hot water is supplied to the heating heat exchanger 8 in the heating terminal 6, and the blower is driven to supply air to the heating heat exchanger 8. , The temperature of the air from the blower is increased by warm water and released into the bathroom 3 to heat and dry the bathroom 3.
[0004]
On the other hand, the hot water deprived of heat by the heating heat exchanger 8 of the heating terminal 6 becomes water and returns to the circulating water tank 25 via the heating return pipe 20 in the heating circulation pipe.
The circulating water tank 25 is provided with a mechanism capable of supplying water when water runs short. Further, the other end of the drain pipe 28 connected to the circulating water tank 25 as shown in FIG. Is connected to the circulation port 9 of the bathtub 1 (not shown), and the circulating water tank 25 is connected to the bathtub 1 via the drain pipe 28 connected to the circulating water tank 25 when the water level in the tank increases. The drain port 28 is connected to the circulation port 9 so as to be drained to the atmosphere.
[0005]
[Patent Document 1]
JP-A-10-153345 (page 4-5, FIG. 1)
[0006]
However, the bathroom heating / drying device described in the prior art has a configuration in which when the water level in the circulating water tank increases, the water is drained to the tub side via a drain pipe, and high-temperature hot water is supplied during the heating operation. Wastewater, causing problems such as discomfort to the user.
[0007]
[Problems to be solved by the invention]
An object of the present invention is to provide a safer bathroom heating and drying apparatus by suppressing a pressure increase in a heating circulation path during a heating operation.
[0008]
[Means for Solving the Problems]
The present invention relates to the following.
(1) A supplementary heating combustion section, a supplementary heating pump for forcibly circulating the bathtub water, a hot-water bath with a supplementary heating pump, and an additional pipe connecting the bathtub and an outgoing pipe and a return pipe. A switching mechanism for switching between a circulation path for cooking and a circulation path for heating via a heating terminal provided in the bathroom is provided, and the sealed circulation path for heating reduces pressure increase in the circulation path. Bathroom heating and drying equipment with a mechanism.
(2) The switching mechanism includes a flow path switching valve and a circulating water tank, a heating return pipe from a heating terminal above the circulating water tank, a return pipe of a circulation path for additional cooking below the circulating water tank, and a circulating water tank. From above, a bathtub return pipe is inserted and connected from the circulation port of the bathtub to the circulating water tank via a shutoff valve.At the start of heating operation, the shutoff valve is opened to return the water in the circulating water tank to the bathtub. The bathroom heating / drying apparatus according to (1), wherein water is drained from the pipe to the bathtub side to form an air layer above the circulating water tank to reduce a pressure increase in a closed circulation path during the heating operation.
(3) The bathroom heater according to the above (1) or (2), wherein the bath kettle with hot water supply is of a through-wall type in which a supply / exhaust port is located outdoors and a connection portion of piping is disposed on a wall surface side in the bathroom. Drying equipment.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
The bath kettle body of the bath kettle with hot water supply has a fan, a hot water supply burner (combustion unit for hot water supply) and a bath burner (combustion unit for additional heating), a pump for additional heating for forcibly circulating bath water, a heat exchanger for hot water supply, A reheating heat exchanger is provided, and the bath kettle body is disposed inside or outside the bathroom.
The bathtub is connected with a circulation port (circulation pipe) composed of an outgoing pipe and a return pipe, connecting the outgoing hot water port and the returning hot water port as a pipe connection part located in the bath kettle main body with the circulation port of the bathtub installed in the bathroom. The hot water can be circulated between the main body and the bathtub.
In addition, as a hot-water bath bath used in the bathroom heating and drying device of the present invention, a hot-water bath bath having a structure including a hot-water combustion unit for filling the bathtub and a re-heating combustion unit for re-heating, Alternatively, a hot water supply combustion section for filling the bathtub and a reheating combustion section are provided, and the main body portion is inserted into a square hole for a supply / exhaust port on the outer wall of the bathroom from the interior of the bathroom and fixed to the wall surface of the bathroom. It can be used in any of the bath kettles with hot water supply of the through-wall installation type (outer wall penetration installation type) in which the pipe connection part of hot water, water, gas, etc. is arranged on the wall side in the bathroom. In order to reduce the heat loss during bathroom heating due to the simplification of the work leading to and the reduction of the piping route, preferably, the latter is a bath kettle with a hot water supply of a wall penetrating type having a structure in which the piping connection portion is located in the bathroom. Is used.
[0010]
A heating terminal for heating and drying a bathroom has a built-in heating heat exchanger and a blowing mechanism. The heating terminal can be mounted on a ceiling, a wall, or an apron of a bathtub installed in the bathroom. It is arranged at an appropriate position such as inside the section.
[0011]
A circulation path (circulation pipe) composed of an outgoing pipe and a return pipe connects the outgoing hot water port and the return hot water port as a pipe connection portion located on the bath hot water bath main body of the bath kettle with hot water supply, and the circulation port of the bathtub installed in the bathroom. Connected so that hot and cold water circulates between the bath kettle body and the bath tub to enable reheating.
In addition, a route that circulates from the hot-water-supplied bath kettle via the heating terminal is required.In the middle of the circulation route, a circulation route for additional cooking and a circulation route for heating via the heating terminal provided in the bathroom are provided. Connect a switching mechanism that switches between.
The switching mechanism provided in the middle of this circulation path includes a flow path switching valve (three-way valve), a shutoff valve, and a circulating water tank.
In the above-mentioned circulating water tank, hot water from the hot-water bath kettle flows through the flow path switching valve (three-way valve), the heating terminal unit to the circulating water tank, and returns from the circulating water tank to the hot-water bath kettle. A return pipe and at least three pipes of a bathtub return pipe returning from the circulation port of the bathtub to the circulating water tank via the above-mentioned shutoff valve, and a bathtub return pipe returning from the circulation port of the bathtub to the circulation water tank via the closing valve. Are connected as a structure in which a pipe is inserted from above the circulating water tank.
[0012]
[Action]
When the heating operation is turned on, the water is supplied to the circulation circuit for heating by the flow path switching valve (three-way valve) from the hot water inlet of the bath kettle with hot water supply to the circulation water tank via the heating terminal. Water is sent, and water is also sent to the circulating water tank from the return port of the main body of the bath with hot water supply, and the water is stored in the circulating water tank. At this time, the shut-off valve connected to the circulation port of the bath tub is opened, and the bath tub side is opened to the atmosphere, so that the water in the circulating water tank is filled with the bath tub return pipe inserted into the circulating water tank from above. Since the water is drained to the bathtub through the shutoff valve, the water level in the circulating water tank does not rise above the end of the bathtub return pipe, and an air layer is secured above the circulating water tank. When the circulation path for heating is filled with water, the shut-off valve is closed, the pump for reheating is operated in the main body of the bath with hot water supply, and the water is heated by the heat exchanger for reheating and the circulation path for heating as hot water. Circulates inside.
Since the circulation path for heating is a closed path, when the temperature of hot water rises during the heating operation, the pressure in the pipe increases, but the air layer formed in the upper part of the circulation water tank Contracts when the pressure rises and acts as a damper, thereby reducing the pressure rise in the piping.
[0013]
【Example】
Hereinafter, an embodiment of the present invention will be specifically described with reference to FIGS.
FIG. 1A is a schematic configuration diagram showing an embodiment of a bathroom heating and drying device according to the present invention, FIG. 1B is an element configuration diagram of the bathroom heating and drying device shown in FIG. FIGS. 2 (a) and 2 (b) are each an explanatory diagram of a component configuration of a circulating water tank portion of a bathroom heating / drying apparatus according to the present invention.
[0014]
In FIG. 1A, a bathroom heating / drying apparatus includes a bathtub 1 installed in a bathroom 3 having a bathroom entrance 4 and a washing floor 5, and an apron portion hanging down from an outer end of an upper edge surface 1 a of the bathtub 1. A bath with a hot water supply installed outdoors with a built-in heating terminal 6 located between the bath 2 and the bathtub 1 and a reheating combustion unit 11, a reheating pump 12, a hot water combustion unit 13, and the like. The bath 10 with hot water supply and the bathtub 1 are communicated with the circulation port 9 of the bathtub 1 via a circulation path (additional piping) including an outgoing pipe 15 and a return pipe 16. The hot water is sucked through the return pipe 16 by the drive of the additional heating pump 12 of the bath kettle 10 with hot water supply, heated by the combustion unit 11 for additional heating of the bath kettle 10 with hot water and returned to the bathtub 1 via the forward pipe 15. It is configured to refire.
In the middle of the piping for additional cooking, hot water from the body of the bath kettle 10 with hot water is circulated through the heating terminal 6 provided in the bathroom 3, and the additional heating is circulated through the bathtub 1. A switching mechanism 14 that can be switched to a circulating path for use is connected.
[0015]
As shown in FIG. 1 (b), the switching mechanism 14 includes a flow path switching valve 23 composed of a three-way valve, a shutoff valve 24, and a circulating water tank 25, and switches the flow path from the hot water inlet of the bath kettle 10 with hot water supply. Outgoing pipe 15 to valve 23, heating outgoing pipe 19 to heating heat exchanger 8 in heating terminal 6 from flow path switching valve 23, heating return pipe 20 to circulating water tank 25 from heating heat exchanger 8, circulating water The return pipe 16 is connected from the tank 25 to the additional heating pump 12 in the hot-water bath 10, and is connected via the circulating water tank 25 so that hot water can be heated and circulated.
In addition, a bathtub outgoing pipe 17 is connected to the circulation port 9 provided in the bathtub 1 from the flow path switching valve 23, and a bathtub return pipe 18 is connected from the circulation port 9 to a circulating water tank 25 via a closing valve 24 in the switching mechanism 14, The hot water is connected via a circulating water tank 25 so as to be able to perform additional heating circulation, and the switching mechanism 14 can switch between a circulation path for heating and a circulation path for additional heating.
[0016]
A circulating water tank 25 in the switching mechanism 14 includes a heating return pipe 20 from the heating heat exchanger 8, a return pipe 16 from the circulating water tank 25 to the reheating pump 12 in the hot-water bath 10, and a bathtub. Three bathtub return pipes 18 are connected from one circulation port 9 via a shutoff valve 24. The heating return pipe 20 and the bathtub return pipe 18 are connected so as to insert a pipe from above the circulating water tank 25, and the return pipe 16 is connected below the circulating water tank 25.
[0017]
Next, the heating operation will be described with reference to FIGS. 2 (a) and 2 (b). When a heating switch operation is performed with the remote control 21 (see FIG. 1 (b)) of the bathtub 10 with hot water, a switching mechanism is provided. 14 is switched to the direction passing through the heating terminal 6, and the closing valve 24 is opened. As shown in FIG. 2 (a), hot water is poured into the circulating water tank 25 from the hot water outlet of the main body of the bath kettle 10 with hot water supply via the heating terminal 6, and hot water is poured into the circulating water tank 25 from the returning hot water outlet. You. As shown in FIG. 2 (b), when the water level in the circulating water tank 25 reaches the height of the suction port of the bathtub return pipe 18, the shutoff valve 24 is open and open to the atmosphere. The water level in the circulating water tank 25 becomes the same height as the suction port of the bathtub return pipe 18, and an air layer is formed above the circulating water tank 25.
[0018]
When the inside of the circulation path for heating becomes full of hot water, the shut-off valve 24 in the switching mechanism 14 is closed and the reheating pump 12 of the bathtub 10 with hot water supply is driven to draw hot water from the circulating water tank 25 to reheat. After being heated in the combustion section 11 for use, it flows into the heating terminal 6 through the heating outward pipe 19. In the heating terminal 6, the blower mechanism 7 is driven to heat the air sent from the blower mechanism 7 with hot water passing through the heating heat exchanger 8 and discharge the air below the bathroom 3 to heat the bathroom.
The hot water heat exchanged by the heating heat exchanger 8 passes through the heating return pipe 20 and is returned to the circulating water tank 25 to perform the heating operation. Since the heating circulation path is a closed circuit, if the temperature of the hot water increases during the heating operation, the pressure in the heating circulation path increases. At this time, the air layer in the circulating water tank 25 contracts and acts as a damper, thereby suppressing a pressure increase in the heating circulation path.
[0019]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, the structure which provides the mechanism which reduces the pressure rise in this circulation path in the closed circulation path for heating is suppressed, The pressure rise in the circulation path for heating during heating operation is suppressed, It is safer because hot water is not drained into the bathtub during operation.
[Brief description of the drawings]
FIG. 1 (a) is a schematic overall configuration diagram showing an embodiment of a bathroom heating / drying device according to the present invention, and FIG. 1 (b) is a component configuration diagram of the bathroom heating / drying device shown in FIG. 1 (a).
FIGS. 2 (a) and (b) are explanatory diagrams of the element configuration of a circulating water tank portion of a bathroom heating / drying apparatus according to the present invention.
3A is a schematic configuration diagram of a bathroom heating / drying device according to a conventional example, and FIG. 3B is an element configuration diagram of the bathroom heating / drying device shown in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Bathtub 1a Upper edge surface 2 Apron part 3 Bathroom 4 Bathroom entrance 5 Washing floor 6 Heating terminal unit 7 Blowing mechanism 8 Heating heat exchanger 9 Circulation port 10 Bath kettle with hot water supply 11 Combustion unit for reheating 12 Reheating pump 13 Hot Water Supply Combustion Unit 14 Switching Mechanism 15 Outgoing Pipe 16 Return Pipe 17 Bathtub Outgoing Pipe 18 Bathtub Return Pipe 19 Heating Outgoing Pipe 20 Heating Return Pipe 21 Remote Control 22 Control Board 23 Flow Path Switching Valve (Three-way Valve)
24 Closing Valve 25 Circulating Water Tank 26 Combustion Unit for Heating 27 Circulating Pump 28 Drain Pipe 30 Multifunction Device

Claims (3)

In the middle of a recirculating route consisting of an outgoing pipe and a return pipe that connects the bathtub with a hot water supply equipped with a reheating tank and a bathtub equipped with a reheating pump for forcibly circulating bath water, A switching mechanism for switching between a circulation path and a circulation path for heating via a heating terminal provided in the bathroom is provided, and a mechanism for reducing a pressure increase in the circulation path is provided in the closed circulation path for heating. Bathroom heating and drying equipment. The switching mechanism is provided with a flow path switching valve and a circulating water tank, a heating return pipe from the heating terminal above the circulating water tank, a return pipe of a circulation path for additional cooking below, and an upper side of the circulating water tank. The bathtub return pipe returning from the circulation port of the bathtub to the circulating water tank via the shutoff valve is inserted and connected.At the start of the heating operation, the shutoff valve is opened and the water in the circulating water tank is drained from the bathtub through the bathtub. The bathroom heating / drying apparatus according to claim 1, wherein the apparatus is drained to the side to form an air layer above the circulating water tank to reduce a pressure rise in a closed circulation path during the heating operation. The bathroom heater according to any one of claims 1 to 3, wherein the bath kettle with hot water supply is of a wall-through installation type in which a supply / exhaust port is located outdoors and a connection portion of piping is disposed on a wall surface side in the bathroom. Drying equipment.

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