JPH0972556A - Heater for bath room - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heater for a bath room capable of reducing the cost and of heating before entering a bath room. SOLUTION: Waste gas from a hot water supplier 3 is lowered in its temperature through a heat exchange unit 5, and is exhausted to the outside. In contrast, exhaust gas in a bath room 2 taken in by a ventilating fan 1 is fed to the waste heat exchange unit 5 in which unit 5 the exhaust air is heated by heat exchange using waste heat from the hot water supplier 3 as a heat source, and is blown off as warm air into the bath room 2.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a heating device used for heating a bathroom.

[0002]

2. Description of the Related Art Although it is widely said that a bathroom is cold, conventionally, only a bath dryer is a specific technique for solving it.

[0003]

However, since the above-mentioned bath dryer is expensive, the installation rate is low, and even if it is actually installed, the amount of electricity used is large and the running cost is high. , The rate of use is low.

Further, as a problem in practical use, it is necessary to heat the room in advance because it is necessary to heat the room when entering the bathroom, and it is necessary to heat the room after using the bathroom. However, in reality, since the heating switch is turned on when taking a bath, it takes time for the heating to start up, which does not eliminate the coldness when taking a bath.

Therefore, an object of the present invention is to provide a heating device for a bathroom which can reduce the initial and running costs and can perform heating before entering a room.

[0006]

The present invention is characterized in that a part or all of ventilation exhaust gas of a bathroom is heated by heat exchange with waste heat of a water heater and fed into the bathroom. Is the heating system.

[0007]

According to the present invention, the waste heat discharged from the water heater is heat-exchanged to lower the temperature, while part or all of the exhaust gas taken in from the ventilation fan is heat-exchanged and warmed, It is sent into the bathroom as heating air.

[0008]

1 is a sectional view showing a schematic structure of a heating device (1) for a bathroom according to an embodiment of the present invention, and FIG.
It is a system diagram for demonstrating the operating condition of the heating device (1) of FIG. A water heater (3) is installed outside the bathroom (2). As for this water heater (3), when you press the switch, the bathtub
(4) Automatically refills when hot water accumulates and automatically stops, and when the hot water becomes low, it has an automatic hot water filling function, and when the hot water temperature drops, it can be reheated. Those having a function are preferable.

The water heater is provided outside the bathroom (2).
A waste heat exchange unit (5) connected to (3) is installed.
Considering that the exhaust gas from the water heater (3) does not enter the bathroom (2), the waste heat exchange unit (5) is airtight and has no mixing with contaminated air, resulting in high efficiency. A heat pipe type having characteristics such as high price and easy handling is desirable.

An exhaust gas control valve (10) is installed under the waste heat exchange unit (5). By adjusting this valve (10), the amount of circulated exhaust gas is between 0% and 100%. Is adjusted by.

A ventilation fan (11) is attached to the ceiling of the bathroom (2). FIG. 3 is a simplified enlarged sectional view for explaining the ventilation fan (11). The ventilation fan (11) uses a fan (12) called Sirocco fan, for example,
The fan (12) is housed and supported in a fan case (15) having an exhaust pipe (14), and takes in exhaust gas from the axial direction and flows it in the outer peripheral direction. The fan case (15) is supported and housed in a box-shaped outer case (16) having an opening at the bottom with the exhaust pipe (14) protruding outward, and the fan case (15) is connected to the upstream side of the fan (12). The upper end of the intake pipe (19) is fixed to the outer peripheral end portion forming the air vent (18). At the lower end of this intake pipe (19), the grill plate (20) is
It is fixed in a state where the mouth of the intake pipe (19) is matched with the mesh portion (21) provided in (20). At this time, the grill plate (20)
A gap is formed between the outer case (16) and the outer case (16). An air supply pipe (23) for circulating the exhaust gas is connected to the outer case (16). (24) is the ceiling wall of the bathroom (2).

In the above structure, the heating operation is
For example, when automatic hot water filling is started, the ventilation fan (11) is operated in conjunction with this, and the temperature of exhaust gas discharged from the water heater (3) becomes low through the waste heat exchange unit (5), and the arrow (30 ) Is discharged to the outside (see FIG. 1).

On the other hand, referring to FIGS. 1 and 3, the bathroom (2)
The exhaust gas inside is the net part that is the intake port, as shown by the arrow (31).
(21) passes through the air supply passage (22) formed by the intake pipe (19) and is taken into the fan (12), and as shown by the arrow (32), the exhaust pipe (of the fan case (15) ( It is discharged from 14) and is heat-exchanged and warmed in the waste heat exchange unit (5) using the waste heat from the water heater (3) as a heat source. The amount of the exhaust gas circulated is adjusted by the valve (10) below the waste heat exchange unit (5) (exhaust gas that is not circulated is vent cap (25).
It is discharged to the outside via. ), This warmed exhaust gas is introduced into the outer case (16) through the air supply pipe (23), as shown by the arrow (34), and is discharged to the surroundings of the outer case (16) and the fan case (15). Using the space (26) formed between the chambers as a chamber, the air is blown into the bathroom (2) as warm air as shown by the arrow (33).

Further, explaining the above operating condition with reference to FIG. 2, the exhaust air of the ventilation fan (11) advances in the directions of arrows a and b, is heat-exchanged and warmed by the waste heat exchange unit (5), and is indicated by the arrow c. Direction is adjusted by the valve (10), and a part or all of the exhaust gas proceeds in the directions of arrows d, e, f from the ventilation fan (11) to the bathroom.
(2) It is blown out and circulated.

Accordingly, the one having the automatic hot water filling function is configured to perform heating during the automatic hot water filling time, and it takes about 20 minutes from the time the switch is pressed until the hot water is collected and automatically stopped. Before entering the bathroom (2), the inside of the bathroom (2) can be appropriately heated.

When heating is unnecessary, the exhaust control valve (1
The exhaust gas of the exhaust pipe (14) may be completely discharged from the vent cap (25) by switching 0).

Those having an automatic reheating function are
It is configured so that heating is performed during the automatic reheating time,
When this is added to the hot water filling function, it becomes even more effective.

The heating may be performed not only during the automatic hot water filling time and the automatic reheating time, but also during the hot water heater operation time including the use of a shower or the like, and an ordinary hot water heater is used. Then, heating may be performed while the water heater is operating.

As described above, since the interior of the bathroom (2) is heated by using the waste heat discharged when the water heater (3) is burnt as a heat source, running cost can be reduced. Further, since the heat source is supplied when filling the hot water, the inside of the bathroom (2) can be warmed before entering the bathroom (2).

[0020]

As described above, according to the present invention, since the waste heat exhausted when burning in the water heater is used as a heat source, it becomes possible to heat the inside of the bathroom by the running cost of only the ventilation fan. Significant cost reduction can be achieved.

Moreover, since the heat source is supplied when filling the hot water, the inside of the bathroom can be warmed before entering the bathroom, and the coldness at the time of entering the bathroom, which has been a conventional problem, can be eliminated.

[Brief description of drawings]

FIG. 1 is a sectional view showing a schematic configuration of a heating device (1) for a bathroom according to an embodiment of the present invention.

FIG. 2 is a system diagram for explaining an operating condition of the heating device (1) in FIG.

FIG. 3 is a simplified enlarged sectional view for explaining a ventilation fan.

[Explanation of symbols]

 (1) Bathroom heating system (2) Bathroom (3) Water heater (5) Waste heat exchange unit (11) Ventilation fan

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Koyoshi Takemura 1-188 Oyonaka, Kita-ku, Osaka City Sekisui House Co., Ltd.

Claims (1)

[Claims] 1. A heating device for a bathroom, wherein part or all of ventilation exhaust gas from the bathroom is heated by heat exchange with waste heat of a water heater and fed into the bathroom.