JP7100749B1 - Hot bath facility - Google Patents

Abstract

The present invention provides a hot bath facility that facilitates temperature control and reduces the burden of maintenance. A hot bath facility (100) maintains the temperature of hot water in a bathtub (10) with a heat exchanger (50). Therefore, the hot water flowing from the supply unit 20 does not play a role in maintaining the temperature in the bathtub 10, and the amount of hot water discharged from the supply unit 20 can be extremely reduced. As a result, when hot spring water is used as hot water, limited hot spring resources can be effectively utilized. In addition, when hot spring water, tap water, or the like is heated and supplied, fuel costs for heating can be reduced. Furthermore, it is not necessary to maintain the temperature by adjusting the flow rate of the supply unit 20, and temperature control can be performed very easily. Also, in this hot bath facility 100 , the heat exchanger 50 is installed in a heat exchanger housing portion 52 directly provided in the bathtub 10 . Therefore, there are no equipment such as hair catchers, circulation pipes, pumps, etc., and cleaning of these is not required, so that the burden of maintenance can be greatly reduced. [Selection drawing] Fig. 1

Description

The present invention relates to a hot bath facility having a heating function.

In recent years, in hot bath facilities, accommodation facilities, etc., in addition to large baths, relatively small bathtubs that can be used by small groups, such as private room baths and family baths, are often prepared separately. In order to differentiate such a relatively small bathtub from a bath at home, there are many facilities that adopt a free-flowing hot bath facility that constantly supplies hot water to the bathtub and drains the overflowing water. In many cases, the temperature of the source is not suitable for human bathing. In such a case, for example, as described in the following [Patent Document 1], cooling by watering or heating of hot spring water is performed. Is generally done.

Japanese Unexamined Patent Publication No. 2008-100018

However, in a free-flowing hot spring facility, it is necessary to constantly supply hot spring water in order to maintain the temperature inside the bathtub, and there is a problem that fuel cost is incurred, especially when the hot spring water is heated and supplied. .. There is also the problem of wasting limited hot spring resources. Further, since it is necessary to maintain the temperature in the bathtub by the amount of hot spring water supplied, there is a problem that it takes time to adjust the flow rate and it is difficult to control the temperature.

Regarding this problem, it is conceivable to provide a well-known circulation type heating equipment in the flowing type hot bath equipment to control the temperature. However, the circulation type heating equipment requires regular cleaning, for example, in the hair catcher and the circulation pipe, and when there are multiple small bathtubs such as private room baths, the burden of maintenance is heavy. There is a problem.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a hot bath facility in which temperature control is easy and the burden of maintenance is small.

The present invention
(1) The bathtub 10, the supply unit 20 for supplying hot water to the bathtub 10, the hot water amount adjusting means 30 for adjusting the flow rate of the hot water supplied to the supply unit 20, and the drainage unit for draining the hot water overflowing from the bathtub 10. In a hot bath facility with 40,
A heat exchanger accommodating portion 52 provided at the lower part of the side surface of the tub 10 and having one surface open toward the tub 10, a heat exchanger 50 housed in the heat exchanger accommodating portion 52, and a water passage hole 54a. It has a cover portion 54 detachably installed in the opening 52a, and a heating pipe 60 for circulating high-temperature heated water in the heat exchanger 50.
The heat exchanger 50 solves the above-mentioned problem by providing a hot bath facility 100 characterized in that hot water in the bathtub 10 is heated by natural convection through the cover portion 54.
(2) Further having a water amount measuring means 70 for acquiring the amount of water stored in the bathtub 10 is provided.
The hot bath facility 100 according to (1) above, wherein when the water amount measuring means 70 detects a predetermined water amount, the hot water amount adjusting means 30 is controlled to reduce or stop the amount of hot water supplied to the supply unit 20. By providing the above problem.
(3) Further having a temperature measuring means 72 for acquiring the temperature of the hot water stored in the bathtub 10 is provided.
By providing the hot water bath facility 100 according to the above (1) or (2), wherein the flow rate of the heated water to the heat exchanger 50 is changed according to the temperature detected by the temperature measuring means 72. , Solve the above problems.
(4) The above-mentioned problem is solved by providing the hot bath facility 100 according to any one of the above (1) to (3), wherein the bathtub 10 and the heat exchanger accommodating portion 52 are integrally molded. solve.

In the hot bath equipment according to the present invention, the heat exchanger maintains the temperature of the hot water in the bathtub. As a result, the amount of hot water discharged from the supply unit can be extremely reduced, and when hot spring water is used as hot water, limited hot spring resources can be effectively utilized. Further, when hot spring water, tap water, or the like is heated and supplied, the fuel cost required for heating can be reduced. Further, it is not necessary to maintain the temperature by adjusting the flow rate of the supply unit, and the temperature can be controlled extremely easily.
Further, in the hot bath facility according to the present invention, since the heat exchanger for heating the hot water in the bathtub is directly provided in the bathtub, there is no hair catcher, circulation pipe, pump, etc., and cleaning for these is unnecessary and maintenance is performed. The burden can be greatly reduced.

It is a figure which shows the hot bath facility which concerns on this invention. It is a figure explaining the heat exchanger part of the hot bath facility which concerns on this invention.

The hot bath equipment according to the present invention will be described with reference to the drawings. Here, FIG. 1 (a) is a schematic configuration diagram of the hot bath facility 100 according to the present invention, and FIG. 1 (b) is a top view of a bathtub portion of the hot bath facility 100 according to the present invention, FIG. 1 (c). Is a schematic cross-sectional view of XX of the bathtub portion.

The hot bath facility 100 according to the present invention comprises a tub 10, a supply unit 20 for supplying hot water to the tub, a hot water amount adjusting means 30 for adjusting the flow rate of hot water supplied to the supply unit 20, and hot water overflowing from the tub 10. Attached to and detached from the drainage unit 40 for draining water, the heat exchanger accommodating unit 52 provided at the lower side surface of the tub 10, the heat exchanger 50 housed in the heat exchanger accommodating unit 52, and the heat exchanger accommodating unit 52. It has a cover portion 54 that can be installed, and a heating pipe 60 that circulates high-temperature heated water in the heat exchanger 50. The hot water here is not particularly limited to hot spring water, but includes tap water and groundwater heated to a predetermined temperature other than hot spring water.

First, the bathtub 10 of the hot bath facility 100 according to the present invention is a relatively small bathtub for a small number of people, such as a private room bath, a family bath, an indoor bath in a guest room, etc., for one to several people to take a bath. It is about 500L to 1500L. Further, the bottom surface of the bathtub 10 is provided with a drainage port 12 for opening the cap at the time of cleaning or the like to drain all the hot water in the bathtub 10.

Further, the supply unit 20 is for supplying hot water having a predetermined temperature set in advance to the bathtub 10, and the hot water supply pipe 22 is connected via the hot water amount adjusting means 30. The shape and position of the supply unit 20 are not particularly limited, but the supply unit 20 may be provided above the water surface of the bathtub 10 in order to produce a flowing flow, and hot water may be gently dropped into the bathtub 10. preferable. Further, the hot water amount adjusting means 30 has, for example, a hot water filling pipe 32a used when filling an empty bathtub 10 with hot water, and a flowing pipe 32b used at the time of flowing. The flow control valves 34a and 34b are individually provided in the pipes 32a and 32b. The flow rate control valve 34a of the hot water filling pipe 32a may be used as an on-off valve.

Further, a hot water supply facility 24 is connected to the upstream of the hot water supply pipe 22, and hot water is supplied from the hot water supply facility 24 to each bathtub 10 via the hot water supply pipe 22, the hot water amount adjusting means 30, and the supply unit 20. The hot water supply facility 24 here is for heating or cooling the source, groundwater, tap water, etc. to a preset set temperature, and is a water addition facility, a heating facility, for adjusting the source water to an appropriate temperature. When groundwater, tap water, etc. are used as hot water, heating equipment for these can be mentioned.

Further, the drainage portion 40 is formed by digging a part of the upper edge 14 of the bathtub 10, for example, and the overflow drainage port 42 is connected to the drainage portion 40. Then, when the bathtub 10 is full, the hot water overflowing from the bathtub body of the bathtub 10 flows into the drainage unit 40 and is drained from the overflow drainage port 42. The drainage section 40 is preferably provided at a diagonal position of the supply section 20.

Next, the heat exchanger portion of the hot bath facility 100 according to the present invention will be described. Here, FIG. 2A is an enlarged schematic cross-sectional view of the heat exchanger portion, and FIG. 2B is an exploded perspective view of the heat exchanger portion. First, as described above, a heat exchanger accommodating portion 52 is provided in the lower portion of the side surface of the bathtub 10 so as to be recessed from the wall surface of the bathtub 10. Therefore, one surface of the heat exchanger accommodating portion 52 on the bathtub 10 side is an opening 52a facing the inside of the bathtub 10. Further, it is preferable to provide a gradient on the bottom surface of the heat exchanger accommodating portion 52 so that the bathtub 10 side is lowered so that hot water does not remain in the heat exchanger accommodating portion 52 when the hot water in the bathtub 10 is drained. Further, it is preferable that the upper surface of the heat exchanger accommodating portion 52 is provided with a gradient so that the bathtub 10 side is higher so that air does not remain in the heat exchanger accommodating portion 52 when the bathtub 10 is filled with hot water. Then, the heat exchanger 50 is installed in the heat exchanger accommodating portion 52, and the heating pipe 60 is drawn into the inside through the wall surface of the heat exchanger accommodating portion 52 and connected to the heat exchanger 50. Further, a cover portion 54 provided with a water passage hole 54a is detachably installed in the opening 52a of the heat exchanger accommodating portion 52. The bathtub 10 and the heat exchanger accommodating portion 52 are preferably formed by integral molding.

Further, the heating pipe 60 is provided with a flow control valve 62, a pump means 64 for circulating heated water in the heating pipe 60, and a boiler or heater for reheating the low-temperature heated water returned from the heat exchanger 50 side. The heating means 66 and the like are connected to each other. The pump means 64 and the heating means 66 may be installed in each bathtub 10, but a somewhat large heating means 66 may be installed to supply heated water to the heat exchanger 50 of each bathtub 10 via the heating pipe 60. It is preferable to distribute or distribute.

Further, in the bathtub 10, a well-known water amount measuring means 70 such as a pressure type water level gauge for acquiring the amount of water in the bathtub 10 and a well-known temperature measuring means 72 such as a water temperature gauge for acquiring the temperature of the hot water stored in the bathtub 10 And are installed.

Next, the usage method and operation of the hot bath facility 100 according to the present invention will be described. First, when the inside of the bathtub 10 is empty, a facility employee or the like gives an instruction to fill the bathtub 10 with hot water to a control unit (not shown). As a result, the control unit fully opens, for example, the flow rate control valve 34a of the hot water amount adjusting means 30. As a result, the hot water in the hot water supply pipe 22 adjusted to the set temperature reaches the supply unit 20 through the hot water filling pipe 32a and is discharged into the bathtub 10. Then, hot water having a set temperature is stored in the bathtub 10. At this time, the hot water in the bathtub 10 flows into the heat exchanger accommodating portion 52 through the water passage hole 54a of the cover portion 54, and is filled with the hot water in the bathtub 10.

Further, the amount of hot water in the bathtub 10 is acquired by the water amount measuring means 70 and output to the control unit. Then, when the water level of the hot water in the bathtub 10 becomes full or near a preset full water level, the control unit closes the flow rate control valve 34a and sets the flow rate control valve 34b to a predetermined opening degree. As a result, the hot water in the hot water supply pipe 22 reaches the supply unit 20 through the flowing pipe 32b and is discharged into the bathtub 10. The amount of hot water discharged at this time is extremely small as compared with the case of filling with hot water. Then, when the bathtub 10 is full, the hot water overflowing from the bathtub body of the bathtub 10 flows into the drainage unit 40 and is discharged from the overflow drainage port 42.

Around this time, the heating means 66 and the pump means 64 operate to distribute heated water heated to a high temperature of about 60 ° C. to 75 ° C. through the heating pipe 60 into the heat exchanger 50. As a result, heat exchange is performed between the heated water passing through the heat exchanger 50 and the hot water in the bathtub 10 flowing into the heat exchanger accommodating portion 52. Then, the hot water in the bathtub 10 heated by the heat exchanger 50 is discharged into the bathtub 10 by natural convection from the upper part of the water passage hole 54a of the cover portion 54. Further, from the lower part of the water passage hole 54a, the hot water in the new bathtub 10 flows into the heat exchanger accommodating portion 52 and is heated by heat exchange with the heat exchanger 50. By repeating these steps, the hot water in the bathtub 10 is heated and maintained at a predetermined temperature set in advance. The heated water whose temperature has dropped due to heat exchange in the heat exchanger 50 is sent to the heating means 66 to be reheated, and then pressure-fed to the heat exchanger 50 by the pump means 64 and again to be the hot water in the bathtub 10. It is used for heating.

As described above, in the hot bath facility 100 according to the present invention, since the heat exchanger 50 maintains the temperature of the hot water in the bathtub 10, the amount of hot water flowing in from the supply unit 20 can be extremely reduced. As a result, when hot spring water is used as hot water, the hot spring water is not wasted and the limited hot spring resources can be effectively utilized. Further, when hot spring water, tap water, or the like is heated and supplied, the fuel cost required for heating can be reduced.

Further, the temperature of the hot water in the bathtub 10 is acquired by the temperature measuring means 72 and output to the control unit. Then, the control unit adjusts the opening degree of the flow rate control valve 62 according to the temperature of the hot water in the bathtub 10 acquired by the temperature measuring means 72, and changes the flow rate of the heated water flowing through the heat exchanger 50. For example, when the temperature of the hot water in the bathtub 10 drops below the set temperature due to the user taking a bath or the like, the control unit detects this via the temperature measuring means 72 and opens the flow rate control valve 62 of the heating pipe 60. To increase. As a result, the flow rate of the heated water flowing through the heat exchanger 50 increases, the heating temperature of the hot water by the heat exchanger 50 rises, and the temperature of the hot water in the bathtub 10 rises. Then, when the temperature of the hot water in the bathtub 10 reaches the set temperature, the control unit detects this via the temperature measuring means 72 and reduces the opening degree of the flow rate control valve 62 of the heating pipe 60. As a result, the temperature of the hot water in the bathtub 10 is maintained at the set temperature.

Further, when the amount of hot water in the bathtub 10 decreases due to the user entering and exiting the bathtub 10, the control unit detects this via the water amount measuring means 70 and increases the opening degree of the flow rate control valve 34b, for example. Let me. As a result, the amount of hot water passing through the flowing pipe 32b increases, the amount of hot water discharged from the supply unit 20 increases, and the water level of the bathtub 10 rises. Then, when the water level of the bathtub 10 becomes full or near a preset full water level, the control unit returns the flow rate control valve 34b to the normal opening degree. As a result, the bathtub 10 is maintained in a predetermined flowing state.

If the water level of the bathtub 10 does not change for a preset time, such as when the user does not take a bath for a long time, the control unit fully closes the flow rate control valve 34b to stop the supply of hot water from the supply unit 20. You can do it. With this configuration, it is possible to further save hot spring resources and reduce fuel costs.

Further, when cleaning the bathtub 10, the facility employee or the like instructs the control unit to supply hot water to the bathtub 10 and stop the operation of the heat exchanger 50. As a result, the control unit fully closes the flow rate control valve 34b and the flow rate control valve 62. As a result, the supply of hot water from the supply unit 20 is stopped. Further, the distribution of the heated water to the heat exchanger 50 is stopped, and the heating operation for the hot water in the bathtub 10 is stopped. Next, the facility employee or the like opens the drain port 12 on the bottom surface of the bathtub 10. As a result, the hot water in the bathtub 10 is discharged from the drain port 12. At this time, the hot water in the heat exchanger accommodating portion 52 is also discharged. Next, the facility employee or the like cleans the inside of the bathtub 10, removes the cover portion 54, and cleans the inside of the heat exchanger 50 and the heat exchanger accommodating portion 52. At this time, since one side of the heat exchanger accommodating portion 52 on the bathtub 10 side has an opening 52a, facility employees and the like relatively easily clean the inside of the heat exchanger 50 and the heat exchanger accommodating portion 52. be able to.

Then, when the cleaning of the bathtub 10, the heat exchanger 50 and the heat exchanger accommodating unit 52 is completed, the facility employees and the like attach the cover unit 54 and then issue an instruction to fill the bathtub 10 with hot water to the control unit. , Make preparations for the next user, etc.

As described above, in the hot bath facility 100 according to the present invention, the heat exchanger 50 maintains the temperature of the hot water in the bathtub 10. Therefore, the hot water flowing in from the supply unit 20 does not play a role of maintaining the temperature of the hot water in the bathtub 10, and the main purpose is practically the effect of directing the flow. As a result, the amount of hot water discharged from the supply unit 20 when the bathtub 10 is full can be extremely reduced. Therefore, when hot spring water is used as hot water, the hot spring water is not wasted and the limited hot spring resources can be effectively utilized. Further, when hot spring water, tap water, or the like is heated and supplied, the fuel cost required for heating can be reduced. Further, since the heat exchanger 50 maintains the temperature of the hot water in the bathtub 10, it is not necessary to maintain the temperature by adjusting the flow rate of the supply unit 20, and the temperature can be controlled extremely easily.

Further, in the hot bath facility 100 according to the present invention, the heat exchanger 50 for heating the hot water in the bathtub 10 is installed in the heat exchanger accommodating portion 52 directly provided in the bathtub 10. Therefore, there is no circulation pipe for heating the hot water in the bathtub 10, and the hair catcher required by law is not required. Further, the hot bath facility 100 according to the present invention heats the hot water in the bathtub 10 by natural convection. Therefore, a water supply device such as a pump is not required, the introduction cost can be reduced, and energy saving can be contributed. Since the equipment such as the hair catcher, the circulation pipe, and the pump is not required, all the periodic cleaning is not required, and the burden of maintenance of the hot bath equipment can be significantly reduced.

Further, in the hot bath facility 100 according to the present invention, the cover portion 54 of the heat exchanger accommodating portion 52 is removable, and one surface of the heat exchanger accommodating portion 52 on the bathtub 10 side has an opening 52a. Therefore, the inside of the heat exchanger 50 and the heat exchanger accommodating portion 52 can be easily cleaned, and the burden of maintenance of the hot bath facility can be further reduced.

Since the configuration, mechanism, shape, dimensions, operation, design, piping route, etc. of each part of the hot bath facility 100 shown in this example are examples, the present invention is not particularly limited to this example, and the present invention is the present invention. It is possible to change and implement it within the range that does not deviate from the gist of.

10 bathtub
20 Supply unit
30 Hot water volume adjusting means
40 Drainage section
50 heat exchanger
52 Heat exchanger housing
52a opening
54 Cover
54a Water passage hole
60 Heating piping
70 Water volume measuring means
72 Temperature measuring means
100 hot bath facilities

Claims (4)

In a hot bath facility having a bathtub, a supply unit for supplying hot water to the bathtub, a hot water amount adjusting means for adjusting the flow rate of hot water supplied to the supply unit, and a drainage unit for draining hot water overflowing from the bathtub.
A heat exchanger accommodating portion provided at the lower part of the side surface of the bathtub and one side of which is open toward the bathtub.
The heat exchanger housed in the heat exchanger housing and
A cover part that has a water passage hole and is detachably installed in the opening,
It has a heating pipe for circulating high-temperature heated water in the heat exchanger.
The heat exchanger is a hot bath facility characterized in that hot water in the bathtub is heated by natural convection through the cover portion. It also has a water volume measuring means to acquire the amount of water stored in the bathtub.
The hot bath facility according to claim 1, wherein when the water amount measuring means detects a predetermined water amount, the hot water amount adjusting means is controlled to reduce or stop the amount of hot water supplied to the supply unit. It also has a temperature measuring means to acquire the temperature of the hot water stored in the bathtub.
The hot water bath facility according to claim 1 or 2, wherein the flow rate of the heated water to the heat exchanger is changed according to the temperature detected by the temperature measuring means. The hot bath facility according to any one of claims 1 to 3, wherein the bathtub and the heat exchanger accommodating portion are integrally molded.

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