JP2709894B2 - Bath water heater - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bathtub hot water heating apparatus capable of always heating and maintaining a bathtub water at a constant temperature before bathing.

[0002]

2. Description of the Related Art When bath water is bathed at intervals, the temperature of the water drops and the water is reheated the next time the bath is bathed. It is necessary to add hot water and adjust the temperature of the hot water. It is difficult and uneconomical to adjust to an appropriate temperature with such adjusting means, and moreover, there is a problem that it takes time before bathing becomes possible.

[0003] For this reason, the applicant of the present invention has disclosed in
As described in 0358 JP, Rutotomoni exhaust the <br/> upper and lower portions of the hollow case body provided with inlet and outlet of bath water
Rotary vane that sends hot water from the suction port to the discharge port near the outlet
The root is provided, and an electric heater for heating the bath water is provided in the hollow case body, and the hollow case body is detachably fixed to the inner wall of the bath tub. We have developed a bath tub hot water temperature controller that is configured to release the bath tub hot water when it reaches a certain temperature while being heated and discharged from the outlet.

[0004]

However, according to the above-mentioned apparatus, the entire apparatus is complicated and expensive because mounting means such as a suction disk and a hook for fixing the case body to the inner wall of the bathtub is required. At the same time, it is necessary to remove it when taking a bath and put it in a suitable place outside the bathtub, and to arrange it in the bathtub after bathing, it will be troublesome to use and take time to install and remove each time There was a fear that. Furthermore, if the suction port of the case body is higher than the surface of the hot water at the time of installation, the flow rate of the bath water from the suction port to the discharge port will decrease, and the temperature of the electric heater will rise excessively or the motor will not load. There has been a problem that disconnection or the like occurs due to the state. In addition, the hot water inside the case is
Heating is provided at the lower end of the case
Hot water in the case is discharged from the lower end of the case by rotating blades
Because it is discharged from the mouth, the area around the electric heater
The hot water can be drained collectively, and it is almost heated
Even hot water is drained from the inlet,
Form a smooth flow of hot water to the outlet through the air heater
There was a problem that can not be. An object of the present invention is to provide a bathtub hot water heating device capable of completely solving such a problem.

[0005]

In order to achieve the above object, a bath tub hot water heating apparatus according to the present invention comprises a partition plate inside a hollow case body.
The hot water outlet is opened at the upper and lower ends of the hollow
It is divided into an empty lower part and a hot water inlet in the front and rear part of the hollow upper part.
And a suction chamber connected to the bottom of the suction chamber.
Fills in and out freely through the insertion port provided in the hot water inlet
A suction member through the filter member.
To the annular passage provided on the partition plate, and
A floating member containing a floating member made of a foamed resin for floating a hollow case body in a bathtub hot water so that the hot water suction port portion is at the level of the hot water level in the upper part of the space on the outer peripheral side of the annular passage.
A storage groove is provided, and a hollow is formed in the middle of the annular passage.
The suction side of the blade pump is connected to the annular passage through a blade pump that rotates by driving a motor provided in the upper portion.
And make the discharge side of this blade pump
Metal hanging from the bottom of the hollow to the vicinity of the inner bottom
It communicates with the upper end opening of the straight cylinder, and
With the end facing the hot water discharge port and up in the vertical cylinder
Insert a heater whose end is fixed to the partition plate and insert the heater.
A gap between the heater and the vertical cylinder is formed in the hot water passage,
It has a structure in which a temperature sensor for adjusting the heater to a constant temperature is mounted at an appropriate position in the hollow upper part .

[0006]

[Action] After the water in the bathtub is boiled to the desired hot water temperature, or after the hot water of the desired temperature is supplied from the water heater into the bathtub, if the time interval for next bathing before or after bathing is long, The case is put into a bath, and the motor and the heater are energized. The case body is made of foam resin.
Since the floating member is installed inside the bathtub, regardless of the amount of bath water in the bathtub, the hot water suction port provided in the hollow upper part is always located at the level of the bath surface. The bathtub hot water that floats and flows into the annular passage from the hot water suction port by the suction force of the blade pump rotated by the motor drive is dripped into the hollow lower part.
Metal vertical cylinder and the heat inserted in the cylinder
To the upper end of the downflow passage between the
Fast flow while intensively heating by a heater during passage
Let it pass. In addition, it is sucked through the hot water inlet
Bathtub water is descaled by the filter member provided in the suction chamber.
Suspended impurities are collected and filtered. This filter member
At the bottom of the suction chamber,
It is easy to replace because it is arranged freely
And easily removes and collects impurities.
You.

The high-temperature hot water heated by the heater flows downward.
Through the hot water outlet opening from the road to the lower end of the hollow lower part
Te injected into the bath, raise the temperature of the bath water is mixed with cold water in the tub lower portion. In this way, the low-temperature hot water in the bathtub is continuously sucked from the hot water inlet of the floating case body, heated by the heater to become high-temperature hot water, convectively mixed with the low-temperature bath water, and then returned to the case body again. By doing so, the temperature of the entire bathtub rises. When the temperature of the bathtub reaches a desired temperature, the power supply to the heater is cut off and the temperature gradually decreases, and when the temperature falls below a certain temperature, the operation of turning on the heater again is repeated, so that the bathtub water is always maintained at a temperature suitable for bathing. At the time of bathing, the case body is pulled up from the outside of the bathtub and temporarily placed in a suitable place until the next use.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a hollow case body made of a hard synthetic resin molded body.
The upper half is formed in the enlarged upper part 1a, and the lower half is formed in the cylindrical hollow lower part 1b having a smaller diameter than the hollow upper part 1a. Partitioned by a partition plate 1c. Reference numeral 2 denotes a hot-water inlet port formed in the front and rear portions of the hollow upper portion 1a, and directly communicates with the suction chamber 3 which is interrupted from communicating with other portions by vertical partition plates 1d provided on three sides in the front and rear portions of the hollow upper portion 1a. doing.

At the bottom of the suction chamber 3, a filter plate 4 having a replaceable filter member 4a is disposed. The filter plate 4 is inserted into and removed from an insertion port 1e opened below the suction port 2. It is free. Further, the lower surface of the filter 4 is communicated with an annular passage 5 provided on the outer peripheral portion of the upper surface of the partition plate 1c. Numerals 6 and 6 denote floating member receiving grooves formed along the outer periphery of both sides of the annular passage 5 as shown in FIGS. 2 and 3, and fitted with a light floating member 7 made of a foamed resin such as styrene foam. They crowded in storage to a certain <br/>.

The floating member 7 applies a certain buoyancy to the case body 1 so that when the case body 1 is placed in a bathtub, the upper end of the suction port 2 of the case body 1 always reaches the molten metal surface. Ru der those who are.

Reference numeral 8 denotes an apparatus room formed by a space above the central portion of the horizontal partition plate 1c surrounded by the inner peripheral wall of the annular passage 5. A brushless motor 9 is fixed on the bottom plate 8a. An upper end portion of a rod-shaped or cylindrical electric heater 10 is fixed so as to be arranged in front of and behind the motor 9. The brushless motor 9 is water-tightly partitioned by a partition wall 9d between an outer magnet piece 9b fixed to its rotating shaft 9a and an inner magnet piece 9c which rotates integrally with the magnet piece 9b through the rotation of the magnet piece 9b through magnetic force. The blade pump 11 is fixed to the lower end of the output shaft 9e to which the piece 9c is fixed. As shown in FIG. 3, a suction passage 13 and a discharge passage 14 in the form of a thin tube are provided in front and rear portions of a pump chamber 12 of the vane pump.
The front end opening of the suction passage 13 is communicated with the front part of the annular passage 5.

The heater 10 hangs from the partition plate 1c to a portion near the inner bottom surface of the hollow portion of the case body 1 and surrounds the heater 10 with a vertical metal cylinder 15. Is fixed to the bottom plate 8a in a watertight manner, and a tip opening of the discharge passage 14 communicates with a hot water inlet 16 which is opened at a part of an upper end of the cylindrical body 15. Further, a gap between the heater 10 and the cylindrical body 15 is formed in the hot water flow-down passage 17, and this passage 17 is formed in the cylindrical body 15.
From the lower end of the opening of the case body 1 to the hot water discharge port 18 formed in the bottom of the case body 1.

Reference numeral 19 denotes a temperature sensor (FIG. 3) which is supported at a proper position on the bottom plate 8a of the apparatus chamber 8 by penetrating the upper end thereof in a watertight manner.
(Shown in FIG. 2), and is vertically provided in the hollow lower part 1b of the case body 1. The temperature sensor 19, the motor 9, the heater 1
The zero wiring cord 20 penetrates the upper end of the case body 1 in a watertight manner and is led out to an appropriate length. The plug attached to the end of the wiring cord 20 is inserted into an outlet to conduct electricity. . A temperature control knob (not shown), a switch for preventing excessive temperature rise, a power switch, and the like are provided at an upper portion of the case body 1, and a microcomputer control section (shown in FIG. 4) is provided at an upper portion. Reference numeral 21 denotes a handle pivotally attached to the upper end of the case body 1 so as to be freely foldable.

The manner of using the bathtub hot water heating apparatus in the embodiment constructed as described above will be described. When the bath is not taken for a long time, the case body 1 of the present apparatus is placed in the bathtub until the bathtub hot water is next bathed. During the period, always heated to a temperature suitable for bathing,
It is something to keep. That is, when the case body 1 is put in the bathtub without being attached to the bathtub, the inside of the hollow lower part 1b of the case body 1 and the inside of the downflow passage 17 are filled with hot water flowing from the discharge port 18 and the case body 1 is filled with the hollow upper part 1b.
Due to the buoyancy of the floating member 7 disposed inside the hot water inlet 2, the upper portion of the hot water inlet 2 floats in a state in which the upper surface protrudes from the upper surface, regardless of the amount of hot water in the bathtub. 2 was maintained at the level of the hot water level, and the low-temperature hot water in the bathtub was allowed to flow into the suction chamber 3 from the suction port 2 and passed through the filter member 4a to fill the pump chamber 12 from the annular passage 5. State.

In this state, when the power switch is turned on and the motor 9 and the heater 10 are energized, the heater 10 generates heat at the set temperature, and the motor 9 starts to rotate the blade 11 a of the blade pump 11. A suction force is generated on the suction port 2 side, and the low-temperature hot water in the bathtub passes through the filter member 4 a from the suction port 2 and is sent out from the suction passage 13 of the pump chamber 12 to the discharge passage 14 via the annular passage 5. Further, it is forcibly made to flow into the cylindrical body 15 from an inlet 16 of the cylindrical body 15 communicating with the discharge passage 14, and is heated by the heater 10 while flowing down the passage 17 in the cylindrical body 15, so that the lower end of the opening of the cylindrical body 15 is opened. Spill out of. At this time, a vertical cylinder made of metal is
The body 15 is also heated and the hot water passing through the passage 17 is concentrated.
Heat efficiently. While passing through the filter member 4a,
Impurities such as scale and hair flowing in with the low-temperature hot water are removed by the filter member 4a.

A portion of the heated high-temperature water flowing out from the lower end of the cylindrical body 15 stays in the hollow lower portion 1b, and
The hot water in b is jetted out of the discharge port 18 into the bath tub, and is convected and mixed with the low-temperature hot water. In this manner, the low-temperature hot water in the bathtub is continuously sucked from the hot water inlet 2 of the case body 1 in which the blade pump 11 rotates, and is heated by the heater 10 to become high-temperature hot water from the outlet 18. After being released into the low-temperature bath water, mixed with the low-temperature water, and returned to the case body, the temperature of the entire bath water gradually rises. The temperature at that time is sensed by the sensor 19.

When the bath water reaches a preset hot water temperature, a comparator (not shown) provided in the electric circuit (microcomputer control unit A in FIG. 4) of the temperature sensor 19, the heater 10, and the motor 9 operates. The output switches from the high level to the low level, and the heater 10 is turned off via the drive unit B.
Change to F. When the hot water temperature becomes lower than the set temperature, the heater 10 is energized again, and this operation is repeated so that the hot water temperature in the bathtub is always suitable for bathing. Temperature.

On the other hand, the brushless motor 9 has a characteristic that the average current flowing into the motor 9 increases in proportion to the load thereof. It is provided to control the motor 9. That is, the average current flowing into the motor 9 is converted into a voltage value, and the load state is detected based on the voltage value. When air is mixed into the pump chamber 12 of the blade pump 11, the blade 11a idles and enters a no-load state. Also,
When the motor 9 is overloaded due to dust mixed into the motor housing or the pump chamber 12, the motor 9 is detected and stopped, and only when a steady load is applied,
The motor 9 is configured to operate continuously.

As described above, the temperature of the bath water is always kept at a temperature suitable for bathing while the bath water is floating in the bath, and when bathing, the power is turned off and the case body 1 is lifted up with the handle 21 so as to be pulled out of the bath. The lower half of the case body 1 is inserted into and supported by a stand box (not shown) installed in the apparatus, and is kept on standby until the next use.

[0020]

According to the bathtub water heating device of the present invention as described above, according to the present invention, the hollow top and bottom it's a hollow casing within the partition plate
It is divided into a hollow lower part with a hot water outlet opening at the end,
A suction chamber communicating with the hot water suction port is installed in the front and rear parts of the hollow upper part.
And a filter member is disposed in the suction chamber.
When the suction chamber is communicated with the annular passage via the filter member,
Both the foamed resin in the hollow upper part on the outer peripheral side of the annular passage
A floating member storage groove for storing a floating member made of
Further, a vane pump which is rotated by a motor is interposed in an intermediate portion of the annular passage so that a suction side of the vane pump communicates with the annular passage and discharge of the vane pump is performed.
Side is communicated with the hot water passage that houses the heater.
From the road through the hot water outlet
Since the hot water is configured to flow out into the bathtub , the case body can be arbitrarily placed in the bathtub without using a means for fixing to the inner wall of the bathtub as in a conventional bathtub hot water heating device. Since it is simply put in the part and floated by the buoyancy of the floating member, it can be easily used regardless of the presence or absence of the mounting place, and is excellent in handleability. That
Since the floating member is made of foamed resin, it is hollow
Cracks etc. occur at the top and hot water enters the floating member storage groove
Even if it is possible to float the entire device with a certain buoyancy
Can be used for long-term use
It is.

Further, regardless of the amount of hot water in the bathtub, the case body can be floated by the floating member so that the hot water inlet of the case body is always at the level of the hot water . The filter member located at the bottom sucks hot water
It can be freely inserted and removed from the insertion port provided in the mouth
It is easy to replace and remove and collect
It is easy to clean pure materials, and moreover,
The filter member is laid on the bottom of the suction chamber.
And it is parallel or slightly inclined with respect to the molten metal surface.
And evenly filter the bath water flowing from the suction port
It can be passed through the annular passage.

In addition, by interposing the intermediate portion of the annular passage
The suction side of the impeller pump through an annular passage
And the discharge side of this blade pump
Hang from the partition plate to the vicinity of the inner bottom of the hollow lower part
To the opening at the top of the metal vertical cylinder
Since the opening lower end of the cylindrical body has to face the above hot water outlet, water
Hot water is discharged from the suction port through the annular passage and the metallic vertical cylinder
It can form a hot water circulation path to the mouth,
The bath water can be distributed smoothly and the vertical
The heater whose upper end is fixed to the partition plate in the cylinder
Insert the gap between the heater and the vertical cylinder into the hot water
Hot water sent from the impeller pump
Concentrate with heater in the downflow passage with fast flow
Can be passed while being heated
The metal bath also heats the vertical metal body,
The temperature can be raised efficiently.

Further, by detecting that the temperature of the bath water has risen to a temperature suitable for bathing by means of a temperature sensor, it is possible to maintain the bath temperature at which bathing is possible at any time. In addition, by detecting the load of the motor and immediately turning off the power when a no-load state or an overload state occurs, the motor can always be used safely.

[Brief description of the drawings]

FIG. 1 is a longitudinal side view of the entire apparatus,

FIG. 2 is a front view in which a part thereof is sectioned,

FIG. 3 is a perspective view of an upper portion of a case body viewed from a lower surface side;

FIG. 4 is a block diagram of a control circuit.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 hollow case body 1a hollow upper part 1b hollow lower part 1c partition plate 2 hot water inlet 3 suction chamber 4a filter member 5 annular passage 7 floating member 9 motor 10 heater 11 blade pump 12 pump chamber 15 metal cylinder 17 downflow passage 18 discharge port

Claims (1)

(57) [Claims] 1. The inside of a hollow case body 1 is partitioned by a partition plate 1c.
A hot water discharge port 18 is opened at the hollow upper part 1a and the lower end.
It is divided into a hollow lower part 1b and in the front and rear part of the hollow upper part 1a.
A suction chamber (3) communicating with the hot water suction port (2) is provided.
3 through the insertion port 1e provided in the hot water suction port 2
The filter member 4a is disposed so as to be freely taken in and out, and
The suction chamber 3 is placed on the partition plate 1c via the stopper member 4a.
The annular passage 5 is provided and communicated with the outside of the annular passage 5.
Floating member housing in which a floating member 7 made of a foamed resin for floating the hollow case body 1 in the bathtub hot water so that the hot water suction port portion is at the hot water level in the hollow upper portion 1a on the peripheral side.
A concave groove 6 is provided, and a hollow is formed in an intermediate portion of the annular passage 5.
The suction side of the blade pump 11 is communicated with the annular passage 5 through a blade pump 11 that rotates by the drive of a motor 9 provided in the upper portion 1a.
The discharge side is located near the inner bottom of the hollow lower part 1b from the partition plate 1c.
Opening of the upper end of the vertical metal cylinder 15 hanging down to the part
And the lower end of the opening of the vertical cylindrical body 15
It faces the mouth 18 and the upper end is inside the vertical cylinder 15
The heater 10 fixed to the partition plate 1c is inserted and the heater 10 is inserted.
The gap between the heater 10 and the vertical cylinder 15 is
And the heater 10 is placed at an appropriate position in the hollow upper portion 1a .
A bath tub hot water heating device comprising a temperature sensor 19 for adjusting the temperature of the bath to a constant temperature.