JPH0899005A - Hot water purification bath and its equipment - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a bath surface purification bath and apparatus for effectively and efficiently collecting dust floating on the bath surface such as dirt and hair to a lower water level. A dust collection chamber 5 is formed on the inner wall of the bathtub, which is separated from the interior of the bathtub by covering a recess 3 having a volume necessary for recovering the hot water of the bathtub 1 with a cover 4, and the cover has an elongated hole shape. And an opening / closing lid 10A on the back surface of the cover, which slides by buoyancy so as to cover the elongated hole-shaped opening below the water surface according to the water level of the bathtub, and the opening / closing of the upper side. A lower opening / closing lid 10B that slides so as to cover the elongated hole-shaped opening below the surface of the water in cooperation with the lid is provided, and the hot water in the bathtub is provided in the lower bottom portion of the garbage collection chamber. A suction port 12 for sucking the liquid through the garbage collection chamber is formed, and a discharge port 10 for circulating hot water into the bath is formed at a desired position of the bath.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bath surface cleaning bath and apparatus for effectively and efficiently collecting dust such as dirt and hair floating on the bath surface up to a low water level.

[0002]

2. Description of the Related Art In a bath apparatus for supplying hot water to a bath to reheat it, hot water is sucked from a circulation port installed below the central part of the bath and dust is filtered by a filter. It is often used to recirculate it again in the bath after cleaning it. These conventional bath devices clean the hot and cold water in the bathtub by sucking it in, so that the hot and cold water in the bathtub can be purified, but dust such as dust and hair floating on the water surface cannot be effectively sucked in, Eventually, dust such as dust and hair floating on the surface of the water was scooped up in a washbasin and discarded. Therefore, the present applicant previously proposed a bath surface purification bath for efficiently collecting and purifying dust such as dirt and hair floating on the bath surface (see Japanese Patent Application No. 5-217686).

The bathtub for purifying molten metal according to this prior application has an inner wall surface 2 of the bathtub 1 as shown in the outline of FIG. 17 and FIG.
A recess 3 having a predetermined volume is integrally formed at a predetermined position, and the recess 3 is covered with a removable cover 4 to form a dust collection chamber 5 separated from the inside of the bath 1.

The cover 4 is provided with an elongated hole-shaped opening 7 for drawing hot and cold water 6 in the bathtub 1 into the dust collecting chamber 5, and is guided by a guide rail 8 on the back surface of the cover 4. In addition, the skirt portion 9 has the opening 7
An opening / closing lid 10 that slides vertically is provided so as to cover the.

At the lower end of the cover 4, a water draining gap 11 for communicating the inside of the bath 1 and the inside of the dust collecting chamber 5 is formed, and the bottom of the dust collecting chamber 5 has the inside of the dust collecting chamber 5 inside. A suction port 12 is provided for feeding the hot and cold water sucked into the hot water supply device, and the purified hot water sent from the hot water supply device is returned to the bathtub at a desired position on the inner wall surface 2 of the bathtub 1. The discharge port 13 is provided for this purpose.

In the bath surface purification bath of the prior application having the above-mentioned configuration, the hot and cold water in the dust collecting chamber 5 is sucked through the suction port 12 so that the hot and cold water in the dust collecting chamber 5 and the hot water in the bathtub 1 are separated from each other. A head is provided, and the surface water of the hot and cold water 6 in the bathtub 1 is sucked into the dust collecting chamber 5 by the drop, so that dust and hair floating on the surface of the hot water can be efficiently collected. .

[0007]

By the way, in the case of the bath surface purifying bath of the above-mentioned prior application, if the vertical hole size of the opening 7 is too long, the opening / closing lid 10 will be opened when the bath surface is lowered.
The skirt portion 9 of the above hits the lower bottom of the dust collection chamber 5, and the opening / closing lid 10 cannot be lowered further. For this reason, in the case of the bath surface purification bath of the prior application, the vertical hole size of the opening 7 is at most the cover 4
Had to be less than half of the total effective length in the vertical direction.

By the way, there are cases where a person with a large physique or a small child enters the bath. Therefore, the water level may drop significantly after a person with a large physique leaves the bathtub, and if a small child enters, the bathtub with a lower water level may enjoy comfortable bathing. Also,
There are people who like low water level regardless of their physique, or conversely,
Some people bathe with plenty of hot water to reach the upper edge of the bathtub, and their preferred water levels vary.

However, in the case of the bath surface cleaning bath of the prior application, as described above, the hole size in the vertical direction of the opening 7 must be at most half the vertical effective length of the cover 4 or less. When the water level of the hot and cold water 6 stretched in the bathtub 1 drops to almost the middle of the cover 4, the opening 7 is completely exposed above the hot water surface. Therefore, when enjoying a bath at a water level lower than that of the opening 7, there is a problem that dust such as dust and hair floating on the surface of the bath cannot be collected and purified.

The present invention has been made to solve the above problems, and an object of the present invention is to improve the cover in the bathtub for purifying the molten metal of the previous application to improve the dust and hair floating on the molten metal surface. It is an object of the present invention to provide a bath surface purification bath and a device therefor capable of effectively and efficiently collecting the waste up to a lower water level than the bath surface purification bath of the prior application.

[0011]

In order to achieve the above-mentioned object, a bath surface cleaning bath according to the present invention has a bathtub inner wall in which a cover is provided on a concave portion having a volume necessary for collecting hot water in the bathtub. A cover is formed with a long hole-shaped opening, and the back surface of the cover covers the long hole-shaped opening below the water surface according to the water level of the bathtub. The upper opening / closing lid that slides by buoyancy and the lower opening / closing lid that slides so as to cover the elongated hole-shaped opening below the water surface in cooperation with the upper opening / closing lid. A suction port for sucking hot and cold water in the bathtub from the elongated hole-shaped opening through the garbage collection chamber is formed in the lower bottom portion, and a discharge port for returning hot and cold water into the bathtub is formed at a desired position in the bathtub. Is.

Further, in the bath surface cleaning bath apparatus of the present invention, a dust collecting chamber separated from the inside of the bath is formed by covering the inner wall of the bath with a concave portion having a volume necessary for collecting hot water from the bath. , The cover is provided with an elongated opening,
On the back surface of the cover, an upper opening / closing lid that slides by buoyancy so as to cover the elongated hole-shaped opening below the water surface according to the water level of the bathtub, and the elongated hole shape below the water surface in conjunction with the upper opening / closing lid. Provided with a lower opening and closing lid that slides to cover the opening of
A suction port for sucking hot and cold water in the bathtub from the elongated hole-shaped opening through the dust collecting chamber is formed in the lower bottom portion of the garbage collecting chamber, and a hot water discharge is provided at a desired position of the bathtub so as to circulate the hot and cold water into the bathtub. An outlet is provided, and a filter provided at the suction port,
A circulation path and a circulation pump for sucking hot and cold water of the bathtub from the suction port and returning the hot and cold water to the bathtub from the discharge port, and a filter for filtering hot and cold water sucked from the bathtub. And pulling the upper opening / closing lid below the water surface of the bathtub by the negative pressure generated in the garbage collecting chamber, and guiding the dust on the water surface of the bathtub to the garbage collecting chamber by the drop between the water surface of the bathtub and the upper opening / closing lid. Thus, the dust is collected by the filter and the filter.

Further, a float part for dropping hot water into the waste collection chamber is provided on the upper opening / closing lid of the hot water purification bath and the hot water purification bath device.

Further, a water draining gap is formed at the lower end portion of the cover of the bath surface cleaning bath and bath surface cleaning bath device to connect the bath and the dust collecting chamber, and the cover is removable. It is a thing.

Further, the upper and lower lids of the bath surface purification bath and the bath surface purification bath device slide according to the water level of the bath by the float portion, and the lower opening and closing lid is buoyant by the upper opening and closing lid. It is pulled up to close the oblong opening below the water surface together with the upper opening / closing lid.

Further, the circulation path of the bath surface purification bath device is equipped with a temperature sensor for detecting the temperature of the bath water, a heat exchanger for heating the hot water, and a burner, and the hot water flowing into the circulation path is provided. When the temperature drops below the set temperature, the burner is heated up to the set temperature.

Further, a water level sensor for detecting the water level of the bathtub is provided in the circulation path of the bath surface cleaning bathtub device, and when the water level of the bathtub falls below a set water level, hot water is supplied to the bathtub from a water heater. It is the one.

[0018]

By using the edge of the bathtub to form a concave portion having a volume necessary for collecting hot water, and by covering the concave portion with a cover, a dust collecting chamber is formed so that the dust collecting chamber does not feel uncomfortable when taking a bath. It is provided in.

The cover for forming the dust collecting chamber has a slotted opening. This opening is made in a water level range effective for bathing. Attached to the back of the cover are an upper opening / closing lid that can freely slide from the lower end to the upper end of the opening due to buoyancy, and a lower opening / closing lid that slides together when hooked at the lower end of the upper opening / closing lid. There is. The upper opening / closing lid is formed to have a size that covers the upper half of the opening, and the lower opening / closing lid is configured to cover the lower half of the opening.

In the upper part of the upper opening / closing lid, there is a float part not only for the weight of the upper opening / closing lid itself but also for giving buoyancy so that it does not sink even when the weight of the lower opening / closing lid is applied. It is shaped like a drop lid against the surface of the water.

Therefore, for example, if the water level of the bathtub is below the center of the opening, only the upper lid is moved up and down to close the opening below the float, while the water level is above the center of the opening. In that case, the upper opening / closing lid moves up and down together with the lower opening / closing lid to close the opening below the float portion.

For this reason, the length of each opening / closing lid can be made shorter than that of the prior application in which one opening / closing lid covers the opening. Therefore, the opening should be an elongated hole extending downward. It is possible to collect dust such as dirt and hair floating on the surface of the water to a low water level.

A suction port for sucking hot and cold water is provided in the lower part of the dust collecting chamber, and a filter for removing large dust such as hair is provided at this suction port. A discharge port for returning the hot and cold water sucked from the suction port to the bathtub is provided at an appropriate position in the bathtub.

A circulation pump for circulating hot and cold water, a filter for filtering the circulating hot and cold water, a heat exchanger and a burner for heating the hot and cold water, and the temperature of the hot and cold water are provided in the circulation path from the suction port to the discharge port. A temperature sensor for detecting and a water level sensor for detecting the water level are provided.

Therefore, when the circulation pump is driven, hot and cold water in the dust collection chamber is sucked through the suction port, so that the float portion on the water surface of the dust collection chamber creates a negative pressure in the dust collection chamber, so that it is located at a position lower than the bath water surface. The float part sinks. Therefore, a drop occurs between the water surface of the bathtub and the float portion, and since the opening below the float portion is closed by the opening / closing lid, the hot water on the water surface of the bathtub flows into the garbage collection chamber from above the float portion, Dust on the water surface is sucked.

The large amount of dust taken into the garbage collection chamber is removed by the filter provided at the suction port, small vocabulary such as dust is filtered by the filter, and the hot and cold water from which the dust is removed is sterilized. Is returned to the bathtub.

Further, a temperature sensor provided in the circulation path,
With the water level sensor, if the temperature of the hot water falls below the set temperature, the burner is ignited to bring it up to the set temperature, and if the water level drops, hot water is replenished from the hot water supply equipment so that the set water level is reached. And you can get a comfortable bathing environment.

Further, when the dust collecting chamber provided at the lower end of the cover connects the dust collecting chamber and the bath with each other, the bath water flows into the dust collecting chamber through the draining gap. It is possible to always keep the water level in the collection chamber and the bathtub at the same level, and at the same time as draining hot water in the bathtub after completion of bathing, the hot water in the dust collection chamber can be drained at the same time from the drainage gap.

Therefore, it is not necessary to separately provide a drain valve for discharging hot and cold water in the dust collection chamber, a water level sensor for monitoring the water level of the hot water in the dust collection chamber, and the dust collection chamber can be made smaller. Moreover, since water does not remain in the garbage collection chamber after drainage, it is possible to prevent the propagation of various bacteria in the garbage collection chamber.

Further, when the cover is detachable, the cleaning of the dust collecting chamber becomes easier when cleaning the bathtub.

[0031]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 12 show an embodiment of a bath surface purification bath according to the present invention. FIG. 1 is an enlarged cross-sectional view of a garbage collection chamber portion, FIG. 2 is an overall perspective view of the bath surface purification bath, and FIG. FIG. 4 is a perspective view of the cover, FIG. 4 is a front view of the cover, FIG. 5 is a rear view of the cover, FIG. 6 is a side view of the cover, FIG. 7 is a perspective view of the upper opening / closing lid, and FIG. 8 is a front view of the upper opening / closing lid. 9 is a side view of the upper opening / closing lid, FIG. 10 is a perspective view of the lower opening / closing lid, FIG. 11 is a front view of the lower opening / closing lid, and FIG. 12 is a side view of the lower opening / closing lid. The same or corresponding parts as those of the above-mentioned prior level molten metal cleaning bath are denoted by the same reference numerals.

Before describing the structure of the above-mentioned embodiment, the following points are different from the bath surface cleaning bath of the previous application. In order to extend the opening 7 formed in the cover 4 to the lower side as much as possible, in order to efficiently collect dust such as dirt and hair floating on the hot water surface even if the hot water 6 in the bathtub 1 has a low water level, Two opening / closing lids, an upper opening / closing lid 10A and a lower opening / closing lid 10B, are provided in the opening 7. In order to remove large dust such as hair that may cause a failure of the hot water supply device in advance, the suction bottom of the dust collecting chamber 5 Mouth 1
2 is equipped with a filter 18 for removing dust. The two opening / closing lids 10A and 10A are attached due to surface tension and water pressure.
In order to prevent B from sticking to the back surface of the cover 4 and becoming stuck, small protrusions 15A and 15B are formed on the sliding surface portions of the skirt portions 9A and 9B of the opening / closing lids 10A and 10B to open and close the cover. The lid is configured to make point contact, and cut portions 16A and 16B for releasing water pressure are provided at various places of the opening / closing lid.

Next, the specific structure of the bath surface cleaning bath according to the above embodiment will be described in detail. As shown in FIGS. 1 and 2, the bathtub 1 is integrally formed with a recess 3 having a volume necessary for collecting hot and cold water in the bathtub on an inner wall surface 2 thereof, and the recess 3 has a detachable cover. By covering the inside of the bathtub 1, a garbage collection chamber 5 separated from the inside of the bathtub 1 is formed.

As shown in the enlarged view of FIGS. 3 and 4, the cover 4 is provided with an elongated hole-shaped opening 7 for sucking hot and cold water in the bathtub 1 into the dust collecting chamber 5. There is. As shown in FIG. 4, the opening 7 is formed so as to be in a water level range effective for bathing, and when the effective total length of the cover 4 is L, it is about 2 / from the upper side to the lower side. It is an elongated hole that reaches up to the 3 · L position.

On the back surface of the cover 4, as shown in FIGS. 5 to 12, an upper opening / closing lid 10A, which is covered with a skirt 9A so as to cover the upper half of the opening 7, is guided by a guide rail 8A. And a lower opening / closing lid 10B, which is slidably attached in the vertical direction by a skirt portion 9B so as to cover the lower half of the opening 7, is slidably attached in the vertical direction by a guide rail 8B. .

As shown in FIG. 6, the vertical dimension of each of the opening / closing lids 10A and 10B is set to about 1/3 of the effective total length L of the cover 4, and its material is slightly heavier than water. Moreover, it is made of a material that does not corrode when wet with water.

On the upper part of the upper opening / closing lid 10A, there is integrally formed a hollow portion 17A having a hollow interior for giving buoyancy to the entire upper opening / closing lid. On the other hand, it is provided so as to cover it like a drop lid. As will be described later, this float portion 17
By the buoyancy of A, the upper opening / closing lid 10A itself and the lower opening / closing lid 10B are slid up and down in accordance with the change in the water level in the dust collecting chamber 5.

In the guide rail 8B for the lower opening / closing lid,
A stopper 20 for restricting the upper limit position of the lower opening / closing lid 10B is provided approximately in the middle of the opening 7 to prevent the lower opening / closing lid 10B from moving to the upper half of the opening 7. are doing. As a result, the water level in the bathtub 1 is changed to the opening 7
Even when it reaches the upper half of the above, the lower half of the opening 7 is prevented from being opened and dust cannot be collected.

An engaging projection 14A is provided at the lower end of the upper opening / closing lid 10A, and an engaging projection 14B is provided at the upper end of the lower opening / closing lid 10B. 1
By engaging 4B, when the upper opening / closing lid 10A floats to the upper half of the opening 7, the lower opening / closing lid 10B is also pulled up, and the opening below the upper opening / closing lid 10A is opened to the lower opening / closing lid 10B. Block by.

Further, in the above embodiment, as shown in FIGS. 8 and 9, the sliding surface of the skirt portion 9A of the upper opening / closing lid 10A has a small hemispherical shape having a height of 0.5 mm and a diameter of 1 mm, for example. A plurality of small projections 15A are formed so that the skirt portion 9A can slide in a point contact state, and cut portions 16A are formed in places on both sides of the skirt portion 9A to act from the opening 7. Let the water pressure escape,
The opening and closing lid is designed so that it can move better.

Similarly, as for the lower opening / closing lid 10B, as shown in FIGS. 11 and 12, a small protrusion 15B is formed on the sliding surface of the skirt portion 9B, and the skirt portion 9B is formed.
Notches 16B are formed in places on both sides of.

In addition, the lower end of the cover 4 is shown in FIG.
As shown in FIG. 5, a drainage gap 11 that connects the inside of the bath 1 and the inside of the dust collection chamber 5 is formed, and the dust collection is performed through the drainage gap 11 during pouring or draining. Hot water is allowed to enter and leave the room 5.

A suction port 12 is provided at the bottom bottom of the dust collection chamber 5 for feeding hot water drawn into the dust collection chamber 5 from the opening 7 to the hot water supply equipment side. A filter 18 such as a metal mesh or a non-woven fabric for removing large dust such as hair is attached to the suction port 12. Further, at an appropriate position on the inner wall surface of the bathtub 1, there is provided a discharge port 13 for recirculating the purified hot water into the bathtub 1 again, and at an appropriate position on the bottom surface, the hot water in the bathtub 1 is drained. A drain port 19 is provided for this purpose.

The ejection angle of the ejection port 13 is preferably slightly downward from the horizontal, for example, about 30 degrees downward. As a result, the hot and cold water discharged from the discharge port 13 causes convection in the bathtub 1, and dust such as dirt and hair sinking in the bathtub 1 floats up to the surface of the bath, which makes it possible to further promote the collection of dust. Becomes

Bath 1 of the embodiment constructed as described above
When using it, the suction port 12
A hot water supply device 51 is connected between the discharge port 13 and the discharge port 13 to form a bath surface cleaning bath apparatus as a whole. Note that FIG.
Has been simplified by a diagram for the sake of clarity.

Before explaining the operation of FIG. 13, the hot water supply apparatus 51 shown in the figure will first be briefly described. In the figure,
Reference numeral 52 denotes a hot water supply heat exchanger, which is heated by a hot water supply burner 84 whose fuel amount is adjusted by a fuel proportional valve 86 and burns to raise the temperature of clean water passing through the pipe. Reference numeral 53 is a heat exchanger for reheating, which opens the fuel opening / closing valve 87 to supply fuel to the reburning burner 86 and raises the temperature of hot water in the bathtub passing through the inside of the pipe by combustion of the reburning burner 86. Is.

On the water inlet side of the hot water supply heat exchanger 52, an external water supply pipe 56 is provided via a water amount sensor 54 and a water temperature sensor 55.
And a hopper 58 via a flow passage opening / closing valve 57.

On the other hand, the outlet side of the hot water supply heat exchanger 52 is
Hot water temperature sensor 59, mixing valve 60, hot water temperature sensor 61,
It is connected to an external hot water tap (not shown) such as a faucet via an external hot water supply pipe 62, and is also connected to a hopper 58 via a flow path opening / closing valve 63.

The first hot water outlet pipe 64 of the hopper 58 is connected to the discharge port 13 of the bath 1 via a water meter 65, a flow path switching valve 66, and a forward pipe 67. The second hot water outlet pipe 68 of the hopper 58 is provided with a flow passage switching valve 69, a flow passage switching valve 70,
The pressure type water level sensor 71, the temperature sensor 72, and the return pipe 73 are connected to the suction port 12 of the dust recovery chamber 5 of the bathtub 1. The pressure type water level sensor 71 detects the water level in the bathtub 1 from the water pressure, and the temperature sensor 72 detects the hot water temperature in the bathtub 1.

Further, the tap hole side 74 of the heat exchanger 53 for additional heating
Is connected to the outflow pipe 67 via the flow path switching valve 66. The water inlet side 75 of the heat exchanger 53 for additional heating is a sterilizer 76.
Is connected to the filter 77 through the flow path switching valve 78, the running water switch 79, and the circulation pump 8 for additional heating.
0, the flow path switching valve 70 is connected to the return pipe 73.

Further, the outlet side 81 of the filter 77 is connected to the flow passage switching valve 78 and the flow passage opening / closing valve 82.
It is connected to the external drainage pipe 83 via.

Next, the operation of FIG. 13 will be described with reference to FIGS.
This will be described with reference to FIG. 14 is an explanatory view of the dust collecting operation when the hot water 6 is stretched to the upper half of the opening 7, and FIG. 15 is a dust collecting operation when the hot water 6 is lowered to the lower half of the opening 7. Explanatory drawing and FIG. 16 are explanatory drawings of drainage operation.

In FIG. 13, after operating the remote control device (not shown) attached to the hot water supply apparatus 51 to set the hot water temperature and the water level, when the automatic switch of the remote control is pressed, the flow path switching valve 69 causes the water amount to change. The sensor 65 is switched to the direction of the flow path switching valve 70, and the flow path switching valve 70 is changed to the flow path switching valve 69-.
The circulation pump 80 is switched to the pressure type water level sensor 71, the flow passage opening / closing valve 63 is opened, and the clean water from the external water supply pipe 56 flows into the heat exchanger 56, and the hopper 58 and the return pipe 73.
Hot water is introduced into the bathtub via.

A heat exchanger 52 for supplying hot water is provided by the water amount sensor 54.
When running water is confirmed, the control unit (not shown) instructs ignition of the hot water supply burner 84, and calculates the opening degree of the fuel proportional valve 85 based on the data from the water quantity sensor 54 and the water temperature sensor 55. Then, a predetermined amount of fuel is supplied to the hot water supply burner 84. Further, the control unit (not shown) detects the temperature of the hot water supplied from the hot water supply heat exchanger 52 by the hot water supply temperature sensor 59 and adjusts the opening of the fuel proportional valve 85 to supply hot water having a predetermined temperature. The hot water is discharged from 52.

The hot and cold water from the hot water supply heat exchanger 52 is detected by the mixed hot water temperature sensor 61, and the temperature is adjusted to a set temperature by driving the mixing valve 60 to adjust the mixing ratio of hot water and water. The hot water adjusted to this set temperature is used for the flow passage opening / closing valve 63, the hobber 58, the water meter 65, and the flow passage switching valve 6
9, 70, a pressure type water level sensor 71, a temperature sensor 72, and a return pipe 73 are used to pour water from the suction port 12 into the bathtub 1, and also to the circulation pump 80 as priming water. The pouring of water into the bathtub is monitored by the water amount sensor 65, and when the predetermined amount of water is reached, the next operation starts.

When the air accumulated in the return pipe 73 is discharged by this pouring, the flow path switching valve 69 is closed and the flow path switching valve 70 is switched to the pressure type water level sensor 71-flow path switching valve 69 direction. The pressure type water level sensor 71 is set to a state where hot water in the bathtub 1 can be monitored. Then, the flow path switching valve 6
6 is switched, and pouring is performed from the hobber 58 to the bathtub 1 via the flow path switching valve 66 from the discharge port 13.

When the pouring water raises the water level of the hot and cold water 6 in the bathtub 1 and reaches the position of the drainage gap 11, the hot and cold water 6 flows from the drainage gap 11 into the garbage collecting chamber 5 and the bathtub At the same time as the water level of the hot water 6 inside rises, the water level of the hot water inside the garbage collection chamber 5 also rises.

Therefore, since the water level of the hot water 6 in the bathtub 1 and the water level of the hot water in the dust collection chamber 5 are always the same, it is not necessary to monitor the water level in the dust collection chamber 5 and There is no need to provide a water level sensor, etc.

The control unit (not shown) is the pressure type water level sensor 7
The detected value from 1 is compared with the set water level, and when it is detected that the hot water is filled up to the set water level, the flow passage switching valve 66 is driven to configure the additional heating passage, and the flow passage opening / closing valve 63 is opened. Close and stop hot water supply. The flow path switching valve 70 is also switched so as to form the additional heating path.

After the hot water supply to the bathtub 1 is completed in this way,
The reheating operation for bringing the hot and cold water in the bathtub 1 to the set temperature is started. In the case of the above-mentioned embodiment, at the same time as this reheating, the operation of collecting dust such as dirt and hair floating on the surface of the hot and cold water 6 in the bathtub 1 is performed as follows.

That is, when the pouring of the hot water supply apparatus 51 is started by the automatic or manual operation after the pouring is finished,
The circulation pump 80 is operated and the water flow switch 7 is activated.
9 detects running water in the additional heating route. As a result, the control unit (not shown) opens the fuel opening / closing valve 87 and performs a predetermined ignition operation in order to ignite the additional heating burner 86, and heats the additional heating heat exchanger 53 by the combustion of the additional heating burner 86. To do.

As a result, the hot and cold water in the garbage collection chamber 5 is
Suction port 12, return pipe 73, temperature sensor 72, pressure type water level sensor 71, flow passage switching valve 70, circulation pump 80, running water switch 79, flow passage switching valve 78, filter 77, sterilizer 76.
To the heat exchanger 53 for additional heating through which it is heated by the burner 86 for additional heating, and passes through the tap hole side 74 of the heat exchanger 53 for additional heating, the flow path switching valve 66, and the forward pipe 67. And is returned to the bathtub 1 again from the discharge port 13.

When the temperature sensor 72 detects that the temperature of the hot and cold water in the bath has risen to the set temperature, the fuel opening / closing valve 87 is closed to extinguish the reburning burner 86, and the circulation pump 80 is stopped to complete the reheating. To do.

When the circulation pump 80 is operated and the well-known reheating is started as described above, the float portion 17 of the upper opening / closing lid 10A which covers the water surface of the dust collecting chamber 5 like a lid.
Due to the action of A, a negative pressure is generated in the dust collection chamber by the suction of the circulation pump 80, and as shown in FIG.
0A is lower than the water level in the bathtub, and a drop occurs between the hot water in the garbage collection chamber 5 and the hot water 6 in the bath 1. For this reason,
The hot and cold water 6 in the bathtub 1 flows into the dust collecting chamber 5 over the upper surface of the upper opening / closing lid 10A.

At this time, the portion of the opening 7 that is submerged below the surface of the molten metal is shielded by the skirt portions 9A and 9B of the upper opening / closing lid 10A and the lower opening / closing lid 10B. Only the dust flows into the dust collecting chamber 5, and dust such as dirt and hair floating on the surface of the water is efficiently collected.

In the case of this embodiment, the opening / closing lids 10A and 10A are provided in order to perform smooth movement in the point contact state.
Small protrusions 15A and 15B are formed on the skirt portions 9A and 9B of B, respectively.
A small gap is created between the back of the cover and the skirt, but these small protrusions 15A and 15B have a height of 0.5 mm.
Since the size is extremely small, a large amount of hot and cold water does not flow into the dust collection chamber 5 through this gap and adversely affect the dust suction action.

The hot and cold water sucked into the dust collecting chamber 5 as described above is removed by the filter 18 attached to the suction port 12 from the dust mixed in the hot water, such as hair. Further, after being filtered by the filter 77 and sterilized by the sterilizer 76, the reheating heat exchanger 5
After being heated at 3, the liquid is recirculated from the discharge port 13 back into the bath 1.

Further, the water level of the hot and cold water 6 in the bathtub 1 is the opening 7
If it is below the lower half part, as shown in FIG. 15, the underwater opening 7 is closed only by the upper opening / closing lid 10A, and the hot and cold water 6 in the bathtub 1 is collected in the same manner as described above. It flows into the chamber 5, and garbage is collected and sterilized.

As described above, the open / close lid that closes the opening 7 is divided into the upper open / close lid 10A and the lower open / close lid 10B, so that the bath surface 6 in the bathtub 1 is located in the maximum vertical direction of the cover 4. It is possible to introduce the hot and cold water in the bathtub 1 into the garbage collection chamber 5 even if the water is lowered to a depth position of about 2/3 of the effective total length, and the depth position is about 1/2 of the effective total length of the cover 4. It is possible to collect dust to a lower water level as compared with the invention of the prior application, which was only able to collect dust.

After the heating is completed, the circulation pump 80 is driven to purify the hot water in the bathtub 1. When the hot water in the bathtub 1 becomes lower than the set temperature, the burner 86 for additional heating is ignited and boiled to the set temperature. It can be raised and kept warm.

Further, since the outlet 13 for returning the purified hot water into the bathtub 1 is attached so that the direction of hot water discharge is slightly downward (for example, about 30 °) from the horizontal direction, the outlet is Hot water discharged downward from 13 causes convection in the bathtub 1 and dust such as dirt and hair sinking at the bottom of the bathtub floats up to the water surface, so that the collection of dust can be further promoted.

When the circulation pump 80 is stopped, the hot and cold water in the bathtub 1 infiltrates into the garbage collection chamber 5 through the drainage gap 11,
The water level in the garbage collection chamber 5 quickly returns to the same water level as the hot water 6 in the bathtub 1. At this time, dust such as dirt and hair that has been sucked into and remains in the dust collection chamber 5 is removed from the upper opening / closing lid 10A.
Since the skirt portions 9A and 9B of the lower opening / closing lid 10B and the float portion 17A of the upper opening / closing lid 10A are blocked from flowing into the bathtub 1 side, dust such as dirt and hair in the dust collecting chamber 5 is again collected in the bathtub. It does not leak to the 1 side and is very hygienic.

Further, the upper opening / closing lid 10A and the lower opening / closing lid 10
The skirt portions 9A and 9B of B are notched 16 in some places.
Since A and 16B are formed, the water pressure acting on the skirts 9A and 9B can be released from this cut portion by suction by the circulation pump 80, and the opening / closing lid is prevented from sticking to the back surface of the cover and becoming immobile. be able to.

Next, the operation of draining the hot and cold water 6 stretched in the bathtub 1 will be described with reference to FIG. That is, when the drainage port 19 is opened after bathing or the like, the hot and cold water in the bathtub 1 and the garbage collection chamber 5 is drained from the drainage port 19 at the bottom bottom of the bathtub.
However, as the water level in the bathtub 1 lowers, the hot and cold water in the garbage collection chamber 5 quickly flows out to the bathtub 1 side through the drainage gap 11, and the water level of the hot and cold water 6 in the bathtub 1 becomes the lower bottom of the garbage collection chamber 5. The drainage of hot and cold water in the garbage collection chamber 5 is completed when the temperature further decreases.

Therefore, dust such as dirt and hair remaining in the dust collecting chamber 5 is discharged from the dust collecting chamber 5 into the bath tub 1, and the discharged dust is discharged to the outside together with the hot water discharged from the bath 1. Therefore, it is not necessary to remove the cover 4 in order to drain hot water accumulated in the garbage collection chamber 5.

Further, since the hot and cold water in the dust collecting chamber 5 is discharged through the drainage gap 11 as described above, the hot and cold water does not remain in the dust collecting chamber 5 and the dust collecting chamber 5
Since it is possible to prevent the proliferation of various bacteria in the interior and since it is not necessary to provide a water level sensor or a dedicated drain valve in the garbage collection chamber 5, the garbage collection chamber 5 can be configured in a small size.
Can fit within the dimensions of the edge of a conventional bathtub.

Therefore, the size of the whole bathtub can be suppressed to the same size as that of the conventional bathtub, and even when the existing bathtub is replaced, it can be dealt with without requiring the bathroom expansion work.

Although the above embodiment has described the case where the dust collecting operation is performed simultaneously with the additional heating, if the above operation is executed without burning the additional heating burner 86,
Only the garbage can be collected and the water in the bathtub can be kept clean.

Further, several lower opening / closing lids can be provided depending on the buoyancy of the upper opening / closing lid, and can be opened / closed to a lower water level.

[0080]

As described above, according to the bath surface purifying bath and the apparatus therefor according to the present invention, the upper opening / closing lid and the lower opening / closing lid located at the back of the opening are vertically moved depending on the water level. By making it slidable, the surface water of the hot water in the bathtub can be sucked into the garbage collection chamber, so it is possible to increase the vertical hole size of the opening.
Even if you set the water level in the bathtub to a lower level, you can collect dust such as dirt and hair floating on the surface of the bath, and you can enjoy a clean bath by filtering the water according to your preferred bathing environment. it can.

Further, since the water collecting gap provided at the lower end of the cover communicates the dust collecting chamber with the inside of the bathtub, when the hot water is drained from the bathtub after the bath is completed, the dust collecting gap is discharged from the water removing gap. Hot water in the collection chamber can also be drained at the same time, water does not remain in the collection chamber, and it is possible to prevent the growth of bacteria in the collection chamber.

Further, since the cover is detachable, the cleaning of the dust collecting chamber becomes easy when cleaning the bathtub.

[0083]

[Brief description of drawings]

FIG. 1 is an enlarged cross-sectional view of a dust collecting chamber portion of a bath surface cleaning bath according to an embodiment.

FIG. 2 is an overall perspective view of a bath surface cleaning bath according to the embodiment.

FIG. 3 is a perspective view of a cover in the embodiment.

FIG. 4 is a front view of a cover in the embodiment.

FIG. 5 is a rear view of the cover in the embodiment.

FIG. 6 is a side view of the cover in the embodiment.

FIG. 7 is a perspective view of an upper opening / closing lid in the embodiment.

FIG. 8 is a front view of the upper opening / closing lid in the embodiment.

FIG. 9 is a side view of the upper opening / closing lid in the embodiment.

FIG. 10 is a perspective view of a lower opening / closing lid in the embodiment.

FIG. 11 is a front view of the lower opening / closing lid in the embodiment.

FIG. 12 is a side view of the lower opening / closing lid in the embodiment.

FIG. 13 is a diagram showing a connection state between the hot water purification bath and the hot water supply apparatus according to the embodiment.

FIG. 14 is an explanatory diagram of a dust collecting operation of the bath surface purification bath according to the embodiment when the water level is higher than the upper half of the opening.

FIG. 15 is an explanatory diagram of a dust collecting operation of the bath surface purification bath according to the embodiment when the water level is equal to or lower than the lower half of the opening.

FIG. 16 is an explanatory diagram of drainage operation in the bathtub for purifying molten metal according to the embodiment.

FIG. 17 is an explanatory diagram of a bath surface cleaning bath according to the prior application.

FIG. 18 is a perspective view of a cover of a bath surface cleaning bath according to the prior application.

[Explanation of symbols]

 1 Bathtub 2 Inner wall surface of bathtub 3 Recessed portion 4 Cover 5 Garbage collection chamber 6 Hot water 7 Opening 8A Guide rail for upper opening / closing lid 8B Guide rail for lower opening / closing lid 9A Skirt part of upper opening / closing lid 9B Lower opening / closing lid Skirt 10A Upper opening / closing lid 10B Lower opening / closing lid 11 Draining gap 12 Suction port 13 Discharge port 14A Upper side opening / closing lid engaging protrusion 14B Lower side opening / closing lid engaging protrusion 15A Small protrusion 15B Small protrusion 16A Upper opening / closing Cut part of lid 16B Cut part of lower opening / closing lid 17A Float part 18 Filter 19 Drain port 20 Stopper for lower opening / closing lid 51 Hot water supply device 52 Heat exchanger for hot water supply 53 Heat exchanger for reheating 58 Hopper 67 Forward pipe 73 Return pipe 76 Sterilizer 77 Filter 80 Circulating pump 84 Hot water supply burner 85 Fuel proportional valve 86 Fuel burner 87 Fuel open / close valve

Claims (12)

[Claims] 1. A trash collection chamber separated from the inside of the bathtub is formed by covering a recess on the inner wall of the bathtub, the recess having a volume required for collecting the hot water of the bathtub, and the cover has a slotted opening. The upper opening / closing lid, which slides by buoyancy so as to cover the elongated hole-shaped opening below the water surface according to the water level of the bathtub, is linked to the upper opening / closing lid. And a lower opening / closing lid that slides so as to cover the elongated hole-shaped opening below the water surface, and the hot and cold water of the bathtub is provided at the lower bottom portion of the garbage collection chamber through the elongated hole-shaped opening. A bathtub for purifying molten metal, which is characterized in that a suction port for sucking in through the bath is formed, and a discharge port for returning hot water into the bath is formed at a desired position of the bath. 2. The bath surface cleaning bath according to claim 1, further comprising a float portion provided above the upper opening / closing lid, the float portion being a lid for dropping hot water in the dust collecting chamber. 3. The upper opening / closing lid slides according to the water level of the bath by the float part, and the lower opening / closing lid is pulled up by the buoyancy of the upper opening / closing lid, and the lower opening / closing lid is below the water surface together with the upper opening / closing lid. The bathtub for purifying molten metal according to claim 2, wherein the slot-shaped opening is closed. 4. The bathtub for purifying molten metal according to claim 1, wherein a water draining gap is formed at a lower end portion of the cover so as to connect the bathtub and the dust collecting chamber. 5. The bath surface cleaning bath according to claim 1, wherein the cover is removable. 6. A dust collection chamber is formed on the inner wall of the bathtub, which is separated from the interior of the bathtub by covering a recess having a volume required for collecting hot water in the bathtub, and the cover has a slotted opening. The upper opening / closing lid, which slides by buoyancy so as to cover the elongated hole-shaped opening below the water surface according to the water level of the bathtub, is linked to the upper opening / closing lid. And a lower opening / closing lid that slides so as to cover the elongated hole-shaped opening below the water surface, and the hot and cold water of the bathtub is provided at the lower bottom portion of the garbage collection chamber through the elongated hole-shaped opening. While forming a suction port for suctioning through, a discharge port for refluxing hot and cold water into the bathtub is formed at a desired position of the bathtub, and a filter provided in the suction port and suctioning hot and cold water of the bathtub from the suction port. A circulation path and a circulation pump for returning to the bath from the discharge port, and a bath And a filter that filters hot and cold water sucked from the suction pump, and draws the hot and cold water with the circulation pump to pull down the upper opening / closing lid below the water level of the bathtub by the negative pressure generated in the garbage collection chamber. And a dust generated on the upper opening / closing lid to introduce dust on the water surface of the bathtub into the dust collection chamber, thereby collecting the dust by the filter and the filter. 7. The bath surface cleaning bath apparatus according to claim 6, wherein a float part that is a lid for dropping hot water in the dust collecting chamber is provided on an upper portion of the upper opening / closing lid. 8. The upper opening / closing lid slides according to the water level of the bathtub by the float portion, and the lower opening / closing lid is pulled up by the buoyancy of the upper opening / closing lid, so that the lower opening / closing lid is below the water surface together with the upper opening / closing lid. The bath surface cleaning bath apparatus according to claim 7, wherein the slot-shaped opening is closed. 9. The circulation path is provided with a temperature sensor for detecting the temperature of hot and cold water in the bathtub, a heat exchanger for heating the hot and cold water, and a burner, and when the hot and cold water flowing into the circulation path falls below a set temperature. 9. The molten metal purifying bath apparatus according to claim 6, wherein the burner is ignited and heated to a set temperature. 10. A water level sensor for detecting the water level of the bathtub is provided in the circulation path, and when the water level of the bathtub falls below a set water level, hot water is supplied to the bathtub from a hot water supply device. 9. The bath surface cleaning bath device according to any one of 9 above. 11. The bath surface cleaning bathtub apparatus according to claim 6, wherein a drainage gap is formed at a lower end portion of the cover to connect the bathtub and the dust collection chamber. 12. The bath surface cleaning bath apparatus according to claim 6, wherein the cover is removable.