JP3468030B2 - Automatic washing tub - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic cleaning bathtub for cleaning a bathtub inner wall surface by injecting a cleaning liquid from a cleaning nozzle.

[0002]

BACKGROUND OF THE INVENTION Although scales adhere to the inner wall surface of a bathtub, the places where the scales adhere most strongly include the position where the water line obtained when the standard amount of hot water is poured into the bathtub contacts the inner wall surface of the bathtub. It is near the top and bottom. Therefore, in the bath cleaning performed after bathing or before filling with water, it is necessary to sufficiently clean the wall surface around the waterline.

As a conventional automatic cleaning bath, as shown in FIGS. 15 and 16, an armrest portion a2 in which the lower half portions of the left and right side walls a1 of the bathtub a are bulged inward, and a peripheral portion of the upper portion thereof. In the left and right side wall portions a1 at an intermediate position with the flange portion a3 that is formed to project outward,
While a plurality of cleaning nozzles b are provided in parallel, the side wall a1 of the bath tub a and the waist wall c made of a concrete block are provided.
There is provided a structure in which a pipe e for supplying the cleaning liquid is set up in a relatively narrow space d between and, and a cleaning nozzle b is connected to the upper end of the pipe e via a fixed joint f ( See, for example, Japanese Utility Model Laid-Open No. 5-68475).

Then, by injecting the cleaning liquid from each of the cleaning nozzles b toward the draft surface g of the opposing side wall portion a1 of the bath, it collides with the inner surface of the side wall portion a1 near the draft surface g and the inner wall of the bathtub a. I try to remove the scale that has adhered to and clean it.

[0005]

By the way, as described above, in the structure in which the cleaning nozzles b are provided on the left and right side wall portions a1 of the bathtub a, the pipe e is drawn along the side wall portions a1 and the tip thereof is drawn. Since it is necessary to connect the cleaning nozzle b to the cleaning nozzle b, not only is it troublesome to circulate the pipe e, but many cleaning nozzles b are exposed as they are on the inner surface of the side wall a1 of the bath tub a. It touches the upper half of the body and creates discomfort, and the appearance of the bathtub is impaired. In addition, when the lid is installed on the bathtub so that the washing liquid does not splash to the washing area outside the bathtub or the wall of the bathroom when washing, when the rinse water is sprayed from the washing nozzle to wash away the washing liquid, the washing liquid scattered on the lid is completely removed. It is easy to remain without being washed off.

Therefore, in the prior art, Japanese Patent Laid-Open No. 4958/1996
As disclosed in Japanese Patent Publication No. 8, a rotary cleaning nozzle is provided at a plurality of locations on the bottom of the bathtub so as to be vertically movable.
When cleaning the bathtub, the cleaning nozzle is lifted from the inner bottom surface of the bathtub to project it, and then the cleaning liquid is sprayed, while when not cleaning, the cleaning nozzle is lowered so that it does not project from the inner bottom surface of the bathtub and stored in the bottom part of the bathtub. Some of them are also provided.

With this construction, the piping can be relatively easily routed, the appearance when not washed is good, and the inconvenience that these washing nozzles become an obstacle during bathing is eliminated. Further, since the nozzle is provided at the bottom of the bathtub, it is possible to spray rinse water on the lid of the bathtub to wash away the cleaning liquid scattered on the lid.

However, in the case where the cleaning nozzle can be moved up and down in this way, it is necessary to ensure a sufficient waterproofness for a long period of time so that the hot and cold water in the bathtub does not leak when the cleaning is not performed. Is complicated and it is difficult to guarantee long-term reliability.

The present invention has been devised in view of the above circumstances, and ensures reliable bathtub cleaning, eliminates unrinsed residue of cleaning liquid, makes piping relatively easy, and does not perform cleaning. An object of the present invention is to provide an automatic cleaning bathtub which has a good appearance at the time, does not obstruct these cleaning nozzles during bathing, and does not require a complicated waterproof structure.

[0010]

The automatic cleaning bathtub of the present invention has the following constitution in order to solve the above problems.

That is, the bottom of the bathtub having a substantially gourd shape in plan view.
Part is a cleaning nozzle that sprays cleaning liquid or rinsing water
In an automatic cleaning bath with a rinsing nozzle for spraying rinsing water, the cleaning nozzle is placed in the lateral direction of the bath.
On the core wire, a plurality of units are arranged in series in the longitudinal direction of the bath.
Place the rinse nozzle on the center line
At least one of the cleaning nozzles is arranged with a space between them, and the spray pattern of the cleaning nozzle is an empty cone shape in which the cleaning liquid or rinse water sprayed in a cone shape is distributed in a donut shape in the horizontal section of the cone, and the rinse pattern is used. The first feature of the nozzle spray pattern is that the rinse water sprayed in a conical shape is in the shape of a full cone in which the rinse water is distributed over the entire cone.

Therefore, it is relatively easy to circulate the pipes for supplying the cleaning liquid or the rinsing water to each nozzle, and the cleaning liquid is intensively sprayed from the cleaning nozzle to the heavily contaminated portions near the water line above and below the water line of the bathtub. At the same time, since the cleaning liquid flows down, no blind spot is generated at the bath cleaning portion, and the entire bath can be cleaned. Then, the cleaning liquid is washed away by the rinse water sprayed from the cleaning nozzle and the rinse nozzle without leaving the cleaning liquid scattered on the bath lid. In addition, these nozzles do not interfere with the appearance during bathing.

Furthermore, in addition to the first feature, view substantially planar
A plurality of cleaning nozzles and at least one rinsing nozzle are provided in series in the longitudinal direction of the bathtub on the centerline of the bathtub, which is a gourd-shaped integrally molded product, in the longitudinal direction of the bathtub. The second feature is that they are arranged as follows.

Therefore, the entire bath can be uniformly washed and rinsed with a relatively small number of nozzles.

Further, in the automatic washing bath in which the washing nozzle for jetting the washing liquid or the rinsing water is arranged at the bottom of the bathtub having a substantially gourd-shaped plan view , and the rinsing nozzle for jetting the rinsing water is arranged on the side wall of the bath. The bathtub
On the centerline of the short side of the
Spray pattern of the nozzle wash and rinse nozzles while a plurality arranged in a row, that washing liquid or rinsing water injected conically is empty conical distributed in a donut shape in the horizontal cross section of the cone It has the third feature.

Therefore, when the rinsing is performed using the same cleaning nozzle that sprays the cleaning liquid, the cleaning liquid splattered in the central portion of the bathtub lid where rinsing residue is likely to occur can be completely washed away.

Further, in addition to the third feature, a plurality of cleaning nozzles are arranged in series in the longitudinal direction of the bath on the center line in the lateral direction of the bath in a substantially gourd shape in plan view having a seat portion.
A fourth feature is that at least one rinsing nozzle is arranged on the side wall opposite to the side wall on which the seat portion is provided.

Therefore, when rinsing is performed using the same cleaning nozzle that sprays the cleaning liquid, the cleaning liquid scattered in the central portion of the bathtub lid where rinsing residue is likely to remain can be completely washed off and the rinsing nozzle can force the rinsing. After the rinsing water that is frequently sprayed hits the bathtub lid, it reaches the stool portion, and the washing liquid accumulated in the stool portion can be washed away.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a plan view of a water jet type automatic cleaning bathtub according to a first embodiment, and FIG. 2 is taken along the line XX which is the center line in the lateral direction of the bathtub of FIG. A sectional view, FIG. 3 is a sectional view taken along the line YY of FIG.

The automatic cleaning bath 2 of this embodiment is a substantially gourd-shaped integrally molded product in plan view, and a flange portion 2b is formed so as to project from the upper end portion of the peripheral wall 2a to the outside.
Further, armrests 2c are formed on the left and right side surfaces inside the peripheral wall 2a. Further, the bathtub 2 is formed with a flat bottom portion 2d from the back side along the longitudinal direction, and a seat portion 2e protruding upward from the bottom portion 2d on the foot side.

At the center of the inner surface of the flat bottom portion 2d of the bathtub 2, a large number of slip patterns 2g, which are unevenness for preventing slippage, are formed, and at a position 2 on the center line along the longitudinal direction of the bathtub 2. A cleaning nozzle 4a for injecting a cleaning liquid or rinsing water is arranged at a position, and a rinsing nozzle 4b for ejecting only rinsing water is arranged between them. A drain plug 7 is provided at one place.

As shown in FIG. 4, the cleaning nozzle 4a comprises a main body 6 and a nozzle guide 8 for generating a vortex which is fitted inside the main body 6.

The main body portion 6 has a dish-shaped head portion 6a and a tubular body portion 6b. The head portion 6a substantially matches the size of the slip pattern 2g described above, and It is formed in a flat shape so as to be located substantially on the same plane as the inner surface of the bottom portion 2d. The head 6a is formed with an injection port 6c of the cleaning liquid that communicates with the inside of the body 6b, and the injection port 6c is also formed.
A hexagonal fitting recess 6d for a tightening tool is formed on the outer side of the housing, and further water drain grooves 6e are formed radially from four positions of the fitting recess 6d.

The shape of the jet port 6c of the cleaning nozzle 4a is set so as to satisfy the following conditions.

That is, in FIG. 1 to FIG. 3, only the position at the center of the spraying range of the cleaning liquid or rinse water sprayed from each cleaning nozzle 4a is indicated by the symbol A, but the actual spraying range is shown. Indicates that the water line obtained when the standard amount of hot water is poured into the bathtub 2 is the peripheral wall 2a of the bathtub body 2.
The cleaning liquid is evenly applied over the entire circumference of the bath 2 while covering the upper and lower portions including the position in contact with.
As the injection angle θa in this case, considering the above points,
For example, θa≈85 ° is set.

In FIG. 4B, in order to set the injection angle θa so that the actual injection is near the water line,
The jet nozzle angle of the cleaning nozzle 4a is θa + α. This is because the cleaning liquid to be sprayed is viscous, so that a desired spray angle θa can be obtained by forming a nozzle with θa + α widened by α degrees.

Further, the detergent concentration of the cleaning liquid is set to, for example, 3% so that the detergent consumption can be reduced as much as possible within a range where a sufficient cleaning performance can be obtained. Depending on the relationship among the three elements having the injection port diameter φa, the cleaning liquid sprayed from the cleaning nozzle 4a may foam and may not be sprayed over the entire circumference of the bath 2. Therefore, in consideration of this point, it is necessary to set the injection port diameter φa so as to ensure a nozzle internal pressure for obtaining a flow velocity sufficient to inject the cleaning liquid over the entire circumference of the bathtub 2, for example, set to φa≈2.8 mm. To be done.

On the other hand, as shown in FIG. 5, the rinsing nozzle 4b comprises a main body 6 and a nozzle guide 9 for generating a vortex which is fitted inside the main body 6. The rinse water sprayed from the rinse nozzle 4b arranged between the two cleaning nozzles 4a is sprayed over the entire surface of the bathtub lid 1 placed on the bathtub 2 as shown in FIG. Considering this point, the injection angle θb is set to, for example, θb≈95 °. With respect to the injection port diameter φb, it is not necessary to consider the bubbling of the cleaning liquid unlike the cleaning nozzle 4a, and the flow rate for injecting over the entire surface of the bath lid 1 is ensured and the flow rate of the rinse water is increased as much as possible. ≈4.5 mm is set.

Further, nozzles are provided on the outer periphery of the body portion 6b of the washing nozzle 4a and the rinsing nozzle 4b at the bottom portion 2d of the bath 2.
A threaded portion 6f is formed for fastening to.

That is, in the present embodiment, the main parts of the cleaning nozzle and the rinsing nozzle are different only in the diameter and angle of the injection port, and the other parts are common, so that the manufacturing process can be shared except a part. Since these nozzles have a shape similar to the slip pattern 2g, they have no discomfort and have a good appearance. Moreover, since it hardly projects from the bottom portion 2d of the bathtub 2, these nozzles do not interfere during bathing.

Further, as shown in FIGS. 4 and 6, the nozzle guide 8 of the cleaning nozzle 4a has, for example, a leg portion 8b for insertion guide along the axial direction from the disk-shaped bush 8a.
The bushes 8a are protruded at four locations, and water passage grooves 8c for generating a vortex are formed at four locations on the outer circumference of the bush 8a inclining from the axial direction.

The water passage 8c of the nozzle guide 8
When the cleaning liquid passes through the nozzle, it becomes a vortex, which is sprayed in an empty cone shape from the spray port 6c of the cleaning nozzle 4a (see FIGS. 10 and 11), so that the hot water and the detergent are efficiently mixed, and In combination with the appropriate setting of the above spray angle θa, excessive foaming due to the detergent is suppressed and the spray is vigorously sprayed to the inner peripheral wall 2a of the bathtub 2, so that the cleaning performance is enhanced and the cleaning liquid is effectively supplied at the time of rinsing. Can be washed away.

On the other hand, in the nozzle guide 9 of the rinse nozzle 4b, in addition to the structure of the nozzle guide 8 as shown in FIG. 7, a through hole 9d is provided in the central portion of the bush 9a in the axial direction. Therefore, since the rinse water passes through the water passage groove 9c and the through hole 9d and is sprayed in a full cone shape over the entire surface of the bathtub lid 1, it is scattered on the bathtub lid 1 when the cleaning liquid is jetted. It is possible to wash away all the cleaning liquid.

Next, a second embodiment of the present invention will be described. FIG. 8 is a plan view of the water jet type automatic cleaning bath according to the second embodiment, and FIG. 9 is a cross-sectional view taken along the line XX which is the center line in the lateral direction of the bath of FIG. A sectional view taken along the line YY in FIG. 8 is shown in FIG. 3 as in the first embodiment.

The main body of the bathtub 2 is the same as that described in the first embodiment, so a detailed description thereof will be omitted here.

The cleaning nozzle 4a arranged at a position on the center line along the longitudinal direction of the bathtub 2 and the rinse nozzle 4b arranged on the side wall opposite to the side wall provided with the seat 2e have exactly the same structure. Cleaning Nozzle 4a of Embodiment 1
As shown in FIG. The nozzle guide 8 is also shown in FIG. Therefore, the cleaning liquid or the rinsing water is sprayed from the cleaning nozzle 4a, and the rinsing water is sprayed from the rinsing nozzle 4b in an empty cone shape (FIG. 10, FIG. 10).
(See FIG. 11).

The injection of the cleaning liquid or the rinsing water from the cleaning nozzle 4a is the same as that described in the first embodiment, so the description thereof will be omitted here.

A rinsing nozzle 4 arranged on the wall surface of the bathtub 2.
From b, the rinsing water is sprayed in the shape of an empty cone while covering the central part of the bath lid 1 and its vicinity, so that the cleaning nozzle 4a
It is possible to completely wash away the cleaning liquid scattered in the central portion of the bathtub lid 1 where rinsing water is likely to remain by spraying rinsing water. Further, the rinse water that has violently collided with the bathtub lid 1 reaches the seat portion 2e, and rinse water containing the cleaning liquid that has accumulated in the seat portion 2e is also washed away. Further, the rinse water sprayed to the bottom of the bath accelerates the drainage of the rinse water mixed with the cleaning liquid accumulated at the bottom of the bath from the drain plug 7.

Reference numeral 10 is an air jet nozzle for jetting hot water containing air bubbles, 12 is a pipe connected to the air jet nozzle 10, 14 is a suction port for circulating hot water, and 16 is a pipe communicating with the suction port 14. , 18a is a pipe connected to the cleaning nozzle 4a, and 18b is a pipe connected to the rinsing nozzle 4b.

FIG. 12 is a block diagram showing the entire automatic bath apparatus equipped with the automatic cleaning bath 2 of the present invention.

This automatic bath apparatus includes the above-described automatic washing bath 2, a bath tub 20 with a water heater, a detergent supply section 80, and a controller 100 for controlling the overall operation of each of these sections.

The bath tub 20 with a water heater has a hot water supply circuit 30,
It has an additional heating circuit 50 and a bath drop circuit 70.

The hot water supply circuit 30 is used to boil the incoming water from the water supply to supply hot water to the automatic cleaning bath 2 and the currant (not shown). The water passage 32 and the hot water passage 33 are connected by a bypass passage 34, and an electromagnetic open / close type bypass valve 35 is provided in the middle of the bypass passage 34. The water inlet 32 is provided with a water amount sensor 37 for detecting the amount Qc of water entering the heat exchanger 2 and a temperature sensor 38 for detecting the water inlet temperature Tc, and the hot water outlet 33 is provided with a temperature sensor 38 from the heat exchanger 31. A can body temperature sensor 40 for detecting the hot water temperature, a water amount servo valve 41 for controlling the hot water amount, and a hot water temperature sensor 42 for detecting the hot water temperature after mixing with the water from the bypass passage 8 are provided.

On the other hand, the reheating circuit 50 reheats the hot water in the automatic cleaning bath 2 while circulating it. The reheating circuit 50 is provided with a heat exchanger 51 for reheating and the suction passages 5 before and after the heat exchanger 51.
2 and the discharge passage 53 are connected by a bypass passage 54, and an electromagnetic opening-and-closing type bypass valve 55 is provided in the middle of the bypass passage 54.
Is provided. A water level sensor 57 for detecting the water level of the bath 2 and a circulation pump 58 for forced circulation are provided in the middle of the suction passage 52 whose one end side is connected to the suction port 14 of the bath 2.
Water flow switch 6 for detecting the presence or absence of water entering the heat exchanger 51
0, a temperature sensor 61 that detects the hot water temperature of the bathtub 2, and an opening / closing valve 62 that opens and closes the suction passage 52 are sequentially arranged.
Further, the discharge passage 53 is branched into two in the middle, one of the discharge passages is connected to the above-mentioned pipe 12 which communicates with the jet nozzle 10 via a three-way valve 65, and the other discharge passage is a three-way cleaning switch. A pipe 18a communicating with the cleaning nozzle 4a via a detergent supply unit 80 described later via a valve 67 and a rinsing nozzle 4b.
Is connected to a rinsing pipe 18b communicating with.

Further, the bath drop circuit 70 connects the hot water supply circuit 30 and the reheating circuit 50 to supply hot water to the bathtub 2.
It is intended to be dropped into the
A water amount sensor 72 for detecting a drop amount and a check valve 73 are sequentially provided.

The detergent supply section 80 is a storage tank 8 for the detergent.
1. An opening / closing valve 82 that opens and closes a detergent supply passage connected to the storage tank 81, and a venturi for drawing the detergent into the pipe 18a by generating a negative pressure by the flow of hot water supplied from the discharge passage 53 to the pipe 18a. 83.

In addition, 90 is an air pipe for sucking in air connected to the fusible nozzle 10, 91 is a check valve provided in the middle of the pipe 90, and 93 is whether the bath lid 1 is placed in the bath 2. A lid sensor for detecting whether or not, 95 is an electromagnetic on-off valve for opening and closing the drain plug 7.

On the other hand, the controller 100 includes a control main body 101 composed of, for example, a micro computer,
It includes a kitchen remote controller 102 installed in a kitchen and the like, and a bathroom remote controller 103 installed in a bathroom.

The control main body 101 includes input data from the remote control devices 102 and 103 and various sensors 37, 38, 4 provided in the bathtub 20 with a water heater.
Based on the detection signals from 0, ...
1, 62, 65, 82, ..., and the operation of each movable part such as the circulation pump 58, and the heat exchangers 31, 5
The combustion control of a burner (not shown) for No. 1 is performed.

Both remote control devices 102 and 103 are for inputting various commands to the control main body 101. For example, in the kitchen remote control device 102,
As shown in FIG. 13, an operation switch 104 for starting the apparatus, an automatic bath operation switch 105 for automatically filling the bathtub 2, a switch 107, 108 for cleaning the bathtub 2 and the like are arranged on the operation panel. In addition, a display unit 109 that displays the hot water temperature and the like during hot water supply is provided.
In this embodiment, if the standard cleaning switch 107 is pressed for a short time, the "standard cleaning mode" is pressed, and if the switch 107 is pressed for a long time (for example, 5 seconds or more), the "intensive cleaning mode" is pressed. For example, "saving cleaning mode" is set for each.

Next, in the automatic bath apparatus having the above structure,
The operation when the bathtub cleaning is executed will be mainly described with reference to the flowchart shown in FIG.

Now, for example, the kitchen remote controller 102
When either of the cleaning switches 107 or 108 is operated (step 1), the control main body 1
01 determines whether or not the bath automatic operation switch 105, the additional heating switch (not shown) of the bathroom remote control device 103 are operated (step 2).

When these switches are operated, it is determined that the bath is in use, the cleaning mode is canceled, and the fact that the bath is in use is displayed on the display unit 109 (step 3). . On the other hand, when other switches such as the bath automatic operation switch 105 are not operated, the control main body 101 places the bathtub lid 1 on the bathtub 2 based on the detection output of the lid sensor 93. It is determined whether or not (step 4).

If the bathtub lid is not placed, the display unit 109 displays that the bathtub lid 1 should be placed (step 5) and the process returns to step 4. When the bathtub lid 1 is already placed on the bathtub 2, the on-off valve 95 is opened so that hot water is constantly drained from the drain plug 7 (step 6), and then the on-off valve 95 is opened. It is determined whether or not the elapsed time T has exceeded the preset maximum drainage time TMAX (step 7). The maximum drainage time TMAX in this case is
It is determined by adding a margin time to the time required to completely drain hot water from the bathtub 2 after the drain plug 7 is opened after the bathtub 2 is full.
AX is set to 10 minutes.

If the maximum drainage time TMAX has elapsed in step 7, it is judged that the residual water in the bathtub 2 has been completely drained, and the routine proceeds to step 10. If the maximum drainage time TMAX has not elapsed in step 7, subsequently, it is determined whether there is residual water in the bathtub 2 based on the detection output of the water level sensor 57 (step 8).

Then, when the detection output of the water level sensor 57 is turned off, it is next determined whether or not the elapsed time T from this point is a preset predetermined time T0 or more (step 9). The predetermined time T0 in this case is determined in consideration of the time required for the residual water in the bathtub 2 to fall below the water level detectable by the water level sensor 57 and before the residual water is completely drained from the drainage pipe or the like. For example, T0 = 3 minutes is set.

If the predetermined time T0 has not yet elapsed in step 9, the process returns to step 7, while if the predetermined time T0 has elapsed, it is determined that there is no remaining water in the bathtub 2 and the pre-rinse mode is entered ( Step 10).

In this preliminary rinse mode, the control body 1
In 01, first, the bypass valve 35 of the hot water supply circuit 30 of the bathtub 20 with a water heater is closed, the drop valve 71 of the drop circuit 70 is opened, and 62 and 55 are closed. In addition, the hot water discharge passage 53
The three-way valve 65 in the middle of the process is closed to stop the discharge of hot water to the squirting nozzle 10, while the cleaning switching three-way valve 67 leading to the cleaning nozzle 4a is switched to the pipe 18a side, and the opening / closing valve 82 of the detergent supply unit 80 is opened. close. Then, the hot water supply circuit 30
From the water inlet 32 of the heat exchanger 31 and the hot water outlet 3
3 and is further supplied to the heat exchanger 51 of the reheating circuit 50 via the drop circuit 70. At this time, the control body 101 is always on the side of the reheating circuit 50 based on both the detection outputs of the water amount sensor 41 of the hot water supply circuit 30 and the water amount sensor 71 of the drop circuit 70, even when a not shown calan or the like is used. By adjusting the opening of the water amount servo valve 41 so that a constant amount of water (for example, 5 liters / minute) flows in, and heating the heat exchanger 31 of the hot water supply circuit 30, hot water at a predetermined temperature (for example, 48 ° C.) is generated. Combustion control is performed so that hot water is discharged from here.

In this way, the hot and cold water discharged from the bath tub 20 with a water heater reaches the venturi 83 from the discharge passage 53 through the washing switching three-way valve 67. At this time, the opening / closing valve 8 of the detergent supply unit 80
Since 2 is closed, only hot water as rinsing water is sprayed from the cleaning nozzle 4a through the pipe 18a. This preliminarily cleans the scales adhering to the peripheral wall 2a of the bathtub 1. Further, as a result of this, when the cleaning liquid is sprayed because the bathtub is wet on one side, the detergent easily spreads over the entire surface and the bath surface is warmed prior to the spraying of the cleaning liquid, so that the cleaning effect of the detergent can be improved. .

Then, the state of this preliminary cleaning is the predetermined time T
When 1 (for example, 2.5 minutes) has elapsed (step 1
1) Next, the control main body 101 determines whether the currently set is the "standard mode", the "saving cleaning mode", or the "intensive cleaning mode" (step 12), By adjusting the opening of the water amount servo valve 41, a predetermined amount of water (for example, 15 liters /
Minute) to flow out and open the degree of opening / closing 82 of the detergent supply unit 80. As a result, the bath kettle with a water heater 20
The detergent accumulated in the storage tank 81 is mixed with the hot and cold water by the negative pressure generated when the hot and cold water passes through the venturi 83, and then is sprayed from the cleaning nozzle 4a through the pipe 18a. As a result, the scales adhering to the peripheral wall 2a of the bathtub 2 are washed with the washing liquid containing the detergent.

Here, according to the settings of the "saving cleaning mode", "standard cleaning mode", and "intensive cleaning mode", predetermined times Ta, Tb, Tc (where Ta <Tb) are set, respectively.
During <Tc), the jet of hot and cold water mixed with the detergent is continued from the washing nozzle 4a (steps 13, 14, 15). As the predetermined time in this case, for example, Ta = 7 seconds, T
b = 16 seconds and Tc = 32 seconds are set.

Then, any one of the above cleaning times Ta,
When Tb and Tc have passed, the pipe 18a is added to the detergent tank 81.
First, in order to prevent the hot water from flowing backward, the detergent supply unit 80
The on-off valve 71 of the drop circuit 70 after closing the on-off valve 82 of the
Is closed, the injection of the cleaning liquid from the cleaning nozzle 4a is temporarily stopped (step 16), and in that state, the process stands by until a predetermined time T2 elapses (step 17). The waiting time T2 is determined in consideration of the time until the detergent sufficiently penetrates into the scale and the cleaning liquid flows down the side wall of the bath 2 and permeates the entire inner wall of the bath 2, for example, T0 = 2.
Set to minutes. By doing this, it is possible to spray directly on the heavily soiled part to remove the stain, and to clean the other part by using the washing liquid flowing down, so that you can save the detergent and effectively clean it. obtain.

Next, the control body 101 shifts to the rinse mode. In this rinse mode, first, the rinse operation 1 (step 18) by the cleaning nozzle 4a is performed.
Since this rinsing operation 1 is the same as that described in step 10, detailed description thereof is omitted here. After the bath cleaning by the rinsing operation 1 is continued for a predetermined time T3 (for example, 3 minutes) (step 19), the cleaning switching three-way valve 67 is subsequently switched to the rinsing pipe 18b side communicating with the rinsing nozzle 4b. A rinsing operation 2 (step 20) is performed in which only hot and cold water is sprayed from the rinsing nozzle 4b as rinsing water onto the bathtub lid 1.
As a result, the cleaning liquid remaining on the bath lid 1 is completely washed away. The rinsing nozzle 4b is provided on the bottom of the bathtub as shown in FIG. 2 in the first embodiment, and on the side wall of the bathtub as shown in FIG. 9 in the second embodiment. 2 is connected (not shown).

Then, this rinsing operation 2 is performed for a predetermined time T4.
After being continued (for example, 3 minutes) (step 21),
While the cleaning switching three-way valve 67 is closed, the three-way valve 65 is opened for a predetermined time (for example, 10 seconds), and the squirting nozzle 10
A small amount of hot water is discharged from the bath so that the cleaning liquid does not remain on the seat 2e of the bathtub 2 (step 2).
2). This completes the cleaning operation.

In addition, in addition, as a related operation, when an unillustrated fuming operation switch of the bathroom remote control device 103 is operated, the reheating circuit 5 of the bath tub 20 with a water heater is operated.
No. 0 circulation pump 58 is started, and on-off valve 62
Is closed and the bypass valve 55 is opened, so that the hot and cold water in the bathtub 2 is circulated, and at the same time when the hot and cold water is discharged from the discharge nozzle 53 through the pipe 12 and the fumarolic nozzle 10,
Hot water mixed with air is jetted into the bathtub 2.

In the first and second embodiments, two cleaning nozzles 4a are arranged in series in the longitudinal direction and one rinsing nozzle 4b is arranged, but the number may be increased according to the length of the bath. Good.

[0067]

According to the present invention, the following effects can be obtained.

(1) In the invention according to claim 1, since the cleaning nozzle and the rinsing nozzle are provided at the bottom of the substantially gourd-shaped bathtub in plan view , the cleaning liquid or the rinsing water is supplied to each nozzle. It is relatively easy to route to the pipe. In addition, these nozzles do not interfere with the appearance during bathing. Moreover, since the nozzle mounting portion has a simple structure, it is possible to obtain an automatic cleaning bath without the need for a complicated waterproof structure. Further, the cleaning liquid from the cleaning nozzle, along with the Isa injection <br/> by the empty cone spray pattern, without dead angle occurs in the tub cleaning position by utilizing the the washing liquid flows down, the whole bathtub Can be washed. As a result, the cleaning can be effectively performed while saving the detergent as compared with the case of spraying the whole. Then, since the rinse water is sprayed over the entire surface of the bathtub lid by the spray cone-shaped spray pattern, the cleaning liquid scattered on the bathtub lid can be completely washed away.

(2) In the invention according to claim 2, in addition to the effect according to claim 1, a plurality of cleaning nozzles and rinsing nozzles are arranged in series in the longitudinal direction on the center line in the lateral direction of the bath. Since they are arranged open, the entire bath can be uniformly washed with a relatively small number of nozzles, and the washing liquid scattered on the bath lid can be effectively washed away.

[0070] (3) In the invention according to claim 3, wherein the cleaning liquid from the cleaning nozzle is by the empty cone spray pattern
With the Isa injection, without dead angle occurs in the tub cleaning position by utilizing the the washing liquid flows down, it can be cleaned the entire tub. As a result, the cleaning can be effectively performed while saving the detergent as compared with the case of spraying the whole. In addition, since the rinse water is sprayed toward the center of the bath lid, when the rinse is performed using the same cleaning nozzle that sprays the cleaning liquid, the cleaning liquid scattered in the central part of the bath where rinsing residue is likely to occur is also completely removed. Can be washed off. Further, since the cleaning nozzle and the rinsing nozzle are the same, only one type of nozzle needs to be manufactured, and the manufacturing cost can be suppressed.

(4) In the invention according to claim 4, in addition to the third feature, the longitudinal direction of the bathtub is the longitudinal direction of the bathtub on the centerline in the lateral direction of the bathtub which has a sitting portion and is substantially gourd in plan view. Since a plurality of cleaning nozzles and at least one rinsing nozzle are arranged on the side wall opposite to the side wall on which the stool is provided, it is possible to uniformly clean the entire bath with a relatively small number of nozzles. When rinsing is performed using the same cleaning nozzle that sprays the cleaning liquid, the cleaning liquid scattered in the central portion of the bath lid where rinsing residue is likely to occur can be completely washed away. Furthermore, after the rinsing water vigorously sprayed from the rinsing nozzle collides with the bathtub lid, the cleaning liquid accumulated in the stool can be washed away.

[Brief description of drawings]

FIG. 1 is a plan view of a water jet type automatic cleaning bath according to a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line XX of FIG.

3 is a cross-sectional view taken along the line YY of FIG.

FIG. 4 is a view showing a cleaning nozzle, FIG. 4 (a) is a front view,
FIG. 3B is a sectional view taken along line ZZ of FIG.

5A and 5B are views showing a rinsing nozzle, FIG. 5A is a front view, and FIG. 5B is a sectional view taken along line ZZ of FIG. 5A.

6A and 6B are views showing a nozzle guide of a cleaning nozzle, FIG. 6A is a sectional view of a main part, and FIG. 6B is a right side view of FIG.

7A and 7B are views showing a nozzle guide of a rinsing nozzle, FIG. 7A is a sectional view of a main part, and FIG. 7B is a right side view of FIG. 7A.

FIG. 8 is a plan view of a water jet type automatic cleaning bath according to a second embodiment of the present invention.

9 is a sectional view taken along line XX of FIG.

10 is a cross-sectional view taken along line XX in FIG. 8, showing an empty cone injection pattern of cleaning liquid and rinsing water.

11 is a cross-sectional view taken along the line YY of FIG. 8, showing an empty cone injection pattern of cleaning liquid and rinse water.

FIG. 12 is a configuration diagram showing an entire automatic bath apparatus including the automatic cleaning bath according to the present invention.

FIG. 13 is a front view of a kitchen remote controller included in the device having the configuration of FIG.

14 is a flowchart for explaining the operation of the apparatus having the configuration of FIG.

FIG. 15 is a perspective view showing the appearance of a conventional automatic cleaning bath.

FIG. 16 is a vertical sectional view of a conventional automatic cleaning bath.

[Explanation of symbols]

2 ... automatic cleaning bath, 2a ... peripheral wall, 2d ... bottom, 4a ... cleaning nozzle, 4b ... rinse nozzle,
6 ... Body part, 6a ... Head part, 8 ... Nozzle guide, 9 ... Nozzle guide

Front page continuation (72) Hideaki Nagase, Hideo Nagase, No. 93 stock company, Edo-machi, Chuo-ku, Kobe, Hyogo Prefecture (72) Yoji Hatake, 93, Edo-machi, Chuo-ku, Kobe, Hyogo, Japan (72) Inventor Eiichi Tsuji 93 No. Edo-cho, Chuo-ku, Kobe-shi, Hyogo Prefecture (72) Inventor Yoshiyuki Fujii No. 93 Edo-cho, Chuo-ku, Kobe-shi, Hyogo (56) Reference References JP-A-4-28331 (JP, A) JP-A-3-212238 (JP, A) JP-A-5-253166 (JP, A) JP-A-6-30889 (JP, A) (58) Field (Int.Cl. ⁷ , DB name) A47L 25/00 A47K 3/00

Claims (4)

(57) [Claims] 1. Cleaning the bottom of a bath in a substantially gourd-shaped plan view
The rinse nozzle and the cleaning nozzle that sprays the liquid or rinse water
In an automatic washing bath with a rinsing nozzle for spraying, place the washing nozzle on the centerline of the bath in the lateral direction.
And a plurality of bathtubs may be arranged in series in the longitudinal direction of the bathtub.
The rinsing nozzle on the center line
The cleaning nozzles are arranged with an interval therebetween, and the spray pattern of the cleaning nozzle is an empty cone shape in which the cleaning liquid or rinse water sprayed in a cone shape is distributed in a donut shape in the horizontal cross section of the cone. The automatic cleaning bathtub is characterized in that the spray pattern is a full cone shape in which the rinse water sprayed in a cone shape is distributed over the entire cone. 2. Providing two cleaning nozzles,
The automatic cleaning bathtub according to claim 1, wherein one rinse nozzle is provided between the cleaning nozzles . 3. An automatic washing bath in which a washing nozzle for jetting a washing liquid or rinsing water is arranged at the bottom of a bath in a substantially gourd-shaped plan view , and a rinsing nozzle for jetting rinsing water is arranged on the side wall of the bath. On the centerline of the bathtub in the lateral direction
And a plurality of bathtubs may be arranged in series in the longitudinal direction of the bathtub.
The injection pattern of the washing nozzle rinsing nozzles, and an empty cone of conically injected cleaning liquid or the rinsing water is distributed in a donut shape in the horizontal cross section of the cone
Automatic cleaning bath, characterized in that there. 4. A plurality of washing nozzles arranged in series in the longitudinal direction of the bathtub on a centerline in the lateral direction of the substantially gourd-shaped bathtub having a seating portion and a side wall facing the side wall where the seating portion is provided. The automatic cleaning bathtub according to claim 3, wherein at least one rinsing nozzle is arranged.