JPH0767932A - Bubble generator - Google Patents

Abstract

(57) [Summary] [Purpose] To stably generate large bubbles and fine bubbles in bath water. [Structure] A water tank 1 has a fine bubble generating portion 2 and a large bubble generating portion 3
Is equipped with. For generation of fine bubbles, the second outflow pipe 11 and the second return pipe 21 are communicated with each other via the pump 5, and the air inflow means B2 is used.
6 is opened, and air is melted under pressure to be discharged as milky white from the fine bubble generating portion 2 into water. Large bubbles are generated by the first forward pipe 9, the second forward pipe 11, the first return pipe 20, and the second return pipe 21.
Are communicated with each other via the pump 5, the air inflow means A25 is opened, and large air bubbles are discharged from the large air bubble generation portion 3 into the water as large air bubbles.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to control of a bubble generator having a function of generating fine bubbles and large bubbles in a water tank by a pump for circulating water.

[0002]

2. Description of the Related Art Conventionally, as a bubble generator (jet bath device) for generating this kind of fine bubbles, Japanese Patent Publication No. 3-1446.
An example of the disclosure of Japanese Patent Publication No. 4 is shown in FIGS. A pump unit 104 having a pump 103 for circulating the hot water 102 in the bath 101, an inhaler 106 for the hot water 102 and a pump 10 connected to a suction side pipe line 105 of the pump 103.
3, a low pressure jet nozzle 109 and a high pressure jet nozzle 11 which are branched and connected to the discharge side conduit 107 of the third embodiment via a two-way valve 108.
It is composed of a nozzle unit 111 including 0.

A jet passage 112 is provided in the suction side pipe 105 of the pump 103, and a branch passage 114 is provided between the discharge side pipe 107 and the jet passage 112 via a shuttle valve 113. As shown in FIG. 8, the shuttle valve 113 includes a conical valve 116 biased by a spring 115 and a valve rod 11 connected to the conical valve 116.
7, an air intake passage 118, and an air passage 119.

Further, the high pressure jet nozzle 110 has a gas-liquid mixer 12 having spiral passages 120 and 121 alternately as shown in FIG.
2 and the valve body 124 biased by the spring 123
And a relief valve 126 having a jet outlet 125
It is composed of. The low pressure jet nozzle 109 is shown in FIG.
0, the flow passage 127 and the air inflow passage 128 formed on the outer periphery of the flow passage 127 are provided.
7, a narrow passage 129, a wide chamber 130, a nozzle 1
31 are configured. Further, the air inflow passage 128 communicates with the wide chamber 130 via a narrow passage 132.

Next, the operation will be described. When fine air bubbles are generated, in FIG.
2 is sucked from the inhaler 106 to the pump 103 via the suction side pipe line 105, and thereafter, fine bubbles are jetted from the high pressure jet nozzle 110 from the pump 103 via the discharge side pipe line 107. At this time, the discharge pressure of the pump 103 acts on the branch line 114, the discharge pressure increases, and the valve rod 117
The conical valve 116 connected to overcomes the biasing force of the spring 115 to open the conical valve 116.

As a result, the jet passage 112 passes through the air intake passage 118, the conical valve 116, and the air passage 119.
The air is sucked into the pump 103 and the pump 103. The sucked air is sent under high pressure to the pump 103, the discharge side pipe 107, and the gas-liquid mixer 122 in the high-pressure jet nozzle 110 to be pressurized and melted, and the valve body 124 of the high-pressure jet nozzle 110.
And fine bubbles are discharged from the jet discharge port 125 to the bathtub 101. On the other hand, when a large bubble is generated, the two-way valve 108 in FIG.
, And large bubbles of hot water from the pump 103 are jetted from the low-pressure jet nozzle 109 to the bath 101.

[0007]

However, in the above-mentioned configuration, during the operation of generating fine bubbles, the two-way valve 108 is switched to the high-pressure jet nozzle 110 side, and when the pump 103 is operated, the hot water 102 flows from the inhaler 106 to the suction side pipe. Road 10
Intake to the pump 103 via 5. When the warm water 102 is sucked, the relief valve 126 becomes a discharge resistance, and the pump 103, the discharge side pipe 107, and the shuttle valve 113 are almost instantaneously brought to a high pressure state. On the other hand, during the operation of generating large bubbles, the two-way valve 108 is switched to the low pressure jet nozzle 109, and when the pump 103 is operated, the warm water 102 has the same inflow path as that during the operation of generating fine bubbles, that is, the inhaler 10.
6 is sucked into the pump 103 via the suction side pipe line 105 and the jet passage 112.

As described above, the inflow of the hot water 102 through the same path during the operation of the fine bubbles and the large bubbles means that the large flow rate is required especially for the generation of the large bubbles, but the jet passage of the shuttle valve 113 of FIG. 8 is required. In order for 112 to exhibit the function of an ejector function of air suction, it is configured to serve as both a nozzle and a diffuser, which are generally called. Therefore, the opening area is small, and as a result, the resistance is large, the suction negative pressure of the pump 103 is large, and a large flow rate cannot be secured.

Further, during operation of generating fine bubbles, the shuttle valve 113 is one of the excellent methods of automatically sucking air without electrical control, but the valve rod 117 provided on the shuttle valve 113 is high. Operated by pressure, the valve rod 11
The conical valve 116 connected to 7 overcomes the urging force of the spring 115, the conical valve 116 is opened, and air is introduced. Therefore, due to a change in high pressure, that is, a jet flow state from the valve body 124 biased by the spring 123 of the relief valve 126 of FIG.
The urging force applied to 4 changes continuously and unstablely.

Therefore, the unstable opening of the valve body 124 also makes the biasing force applied to the valve rod 117 unstable and changes the amount of sucked air. As a result, stable generation of fine bubbles cannot be achieved. That is, in the conventional technique, both the large bubbles and the fine bubbles have practical problems as described above.

The present invention is intended to solve the above problems and to stabilize the generation of both large bubbles and fine bubbles.

[0012]

In order to achieve the above object, a bubble generating apparatus of the present invention comprises a water tank, a bubble jetting device provided in the water tank, comprising a fine bubble generating section and a large bubble generating section, and the water tank. A pump for circulating the water, a bypass circuit having both ends connected between the discharge part and the suction part of the pump, and an air inflow means A for branching the bypass water of the bypass circuit and communicating with the large bubble generating part The forward pipe is provided with a first switching means and a second forward pipe communicating with the fine bubble generating portion, and communicates with the first forward pipe and the second forward pipe when the large bubbles are generated, and is communicated with the second forward pipe when the fine bubbles are generated. An ejector part having an inlet and an outlet connected in the middle of the bypass circuit and having a water inflow part and an air inflow part, a second switching means for controlling bypass water upstream of the ejector part, and a part of the ejector part Water and air negative An air control device which is provided with an inflow resistance portion and an air backflow prevention device in the air inflow portion and communicates with the air backflow prevention device to adjust the amount of air, an air inflow means B upstream of the air control device, and the water tank. A return pipe for sucking the water of the pump into the suction part of the pump, a first return pipe that branches the return water of the return pipe and communicates with the suction part of the pump when a large bubble is generated, and a second return pipe that communicates with the water inflow part of the ejector part. The second pipe that communicates with the return pipe and the water inflow part of the ejector part when minute bubbles are generated.
A third switching means for switching the flow to the return pipe is provided, and the second forward pipe or the second return pipe is provided with a flow rate detection device. When fine bubbles are generated, it is determined whether normal or abnormal by a detection signal of the flow rate detection device. It is provided with control means for judging and controlling the operation and stopping the detection signal of the flow rate detection device when a large bubble is generated.

The second technical means in the bubble generating device of the present invention is a water tank, a bubble jetting device provided in the water tank, comprising a fine bubble generating portion and a large bubble generating portion, and a pump for circulating water in the water tank. A bypass circuit having both ends connected between the discharge part and the suction part of the pump, and a first outflow pipe branching the bypass water of the bypass circuit and communicating with the large bubble generating part communicating with the air inflow means A, A second forward pipe communicating with the fine bubble generating portion is provided, and a first switching means for switching the flow to the first forward pipe and the second forward pipe when a large bubble is generated and to the second forward pipe when a fine bubble is generated; 1. An ejector part having an inlet and an outlet connected between the switching means and the suction part of the pump and having a water inflow part and an air inflow part, and a resistance part for making a negative pressure of water and air flow into a part of this ejector part. , Reverse air flow to the air inlet An air control device that is provided with a stop device and communicates with the air backflow prevention device to adjust the amount of air, an air inflow means B upstream of the air control device, and a return pipe that sucks the water in the water tank into the suction portion of the pump. And the return water of this return pipe is branched to communicate with the suction part of the pump when large bubbles are generated.
A second return pipe communicating with the return pipe and the water inflow portion of the ejector portion, and a second switching means for switching the flow to the second return pipe communicating with the water inflow portion of the ejector portion when fine bubbles are generated; (2) A forward flow pipe or a second return pipe is equipped with a flow rate detection device, and when a fine bubble occurs, the operation is controlled by determining whether it is normal or abnormal by a detection signal of the flow rate detection device, and when a large bubble occurs, the flow rate detection device The control means for stopping the signal of is provided. The inflow means B is closed preferentially.

The third aspect of the bubble generating apparatus of the present invention
The technical means is the control means of the first or second technical means,
When it is determined that the detection signal is abnormal, the operation of the pump is stopped and the air inflow means B is closed.

Furthermore, the fourth technical means in the bubble generating device of the present invention is such that when the control means of the first or second technical means is set to "ON" the operation switch for generating fine bubbles, the pump is operated to detect the flow rate. The apparatus is operated to determine whether the detection signal is normal or abnormal. If the detection signal is normal, the air inflow means B is opened, and if abnormal, the pump operation is stopped.

Further, the fifth technical means in the bubble generating apparatus of the present invention displays the abnormality of the control means of the third or fourth technical means, when the detection signal judges the abnormality,
Alternatively, an abnormal sound is generated.

Furthermore, the sixth technical means in the bubble generating apparatus of the present invention is the control means of the above-mentioned first or second technical means, and when the detection signal is judged to be abnormal, the pump is stopped and the air inflow means B is turned on. After closing, the switching means is switched to the first return pipe and the second return pipe side, and to the first forward pipe and the second forward pipe side, and the pump is operated, and after operating the pump for a certain time, the pump is turned on. It is a cleaning operation that is stopped.

The seventh technical means in the bubble generating apparatus of the present invention is such that the control means of the sixth technical means is made to perform a cleaning display during the cleaning operation or to generate a cleaning voice.

[0019]

In the above first technical means, the control means causes
A second flow pipe or a second return pipe is provided with a flow rate detection device, and when a fine bubble is generated, the operation is controlled by determining whether it is normal or abnormal by a detection signal of the flow rate detection device, while when a large bubble is generated, the By stopping the detection signal of the flow rate detection device, the flow rate is abnormal during the generation of fine bubbles, that is, the return pipe when the fine bubbles are generated, the second return pipe, the bypass circuit including the ejector unit, the second forward pipe, and the fine bubbles generated. The flow rate changes due to a clogging of the piping circuit that communicates with the piping or due to an abnormality due to leakage of piping or connections.

In the communicating piping circuit, if foreign matter or the like is clogged in the pore forming portion of the fine bubble generating portion, which is a particularly important constituent portion, the flow rate will decrease, and the pore forming portion will be foreign matter. When worn due to such factors, an abnormal change such as an increase in the flow rate occurs, and this abnormal change makes the amount of fine bubbles generated unstable. When the flow rate is reduced, the pressures of the pump, the bypass circuit, and the second outflow pipe increase, which is unsafe, and the balance between the air sucked into the pump and the air discharged is disturbed, and the pump causes air bleeding.

On the other hand, when the flow rate increases, the pressures of the pump, the bypass circuit, and the second outflow pipe decrease, and the amount of pressurization and dissolution of the inflowing air decreases, causing a problem that the amount of fine bubbles generated significantly deteriorates. Therefore, it is necessary to control the operation by determining whether the flow rate is normal or abnormal by the detection signal of the flow rate detection device. Further, even if the discharge resistor due to a hand or foot comes into the nozzle of the bubble generating portion during the actual bathing, the discharge flow rate is small, so the influence of the discharge resistor is small and the flow rate does not change significantly.

However, even when a large bubble is generated, if the operation is controlled by judging whether it is normal or abnormal by the detection signal of the above-mentioned flow rate detecting device, the flow rate Q1 flowing in the first outflow pipe and the second flow rate
Assuming that the flow rate Q2 flowing through the outflow pipe is the large bubble generation flow rate QT
Can be the sum of Q1 + Q2, Q1> Q2, Q1 = Q2,
It does not have to be related to the branch flow rate of Q1 <Q2.
Therefore, it is not necessary to determine whether it is normal or abnormal by the detection signal of the flow rate detection device.

Further, when a discharge resistor due to a hand or foot comes into the nozzle for generating bubbles during the actual bathing, the discharge flow rate is large,
The effect of the discharge resistor is large, and the flow rate changes significantly. As a control means that changes the flow rate largely and irregularly, the flow rate detection device is expensive, and there are problems such as complicated sequence settings. By stopping, control is simple and simple control means can be realized.

The above-mentioned second technical means has the same operation as the above-mentioned first technical means, and therefore detailed description thereof will be omitted.
The different point is that in the first technical means, the switching means constitutes the piping circuit by three switching means, whereas in the second technical means, the switching means constitutes the piping by two switching means.

In the third technical means, when the detection signal is judged to be abnormal, the operation of the pump is stopped and the air inflow means B is closed to prevent abnormal operation of the pump, the bypass circuit, etc. The safety and durability of the piping circuit can be improved.

In the fourth technical means, when the operation switch for generating fine bubbles is turned on, the pump is operated and the flow rate detecting device is operated to judge whether the detection signal is normal or abnormal. By opening the air inflow means B or by stopping the operation of the pump in the case of abnormality, it is possible to determine the operation of the pump and whether or not each switching means is normally switched, and in the case of abnormality, the pump is turned on. It is possible to stop and check the operation of the pump, abnormality of each switching means and the like.

In the fifth technical means, when it is determined that the detection signal is abnormal, an abnormality is displayed or an abnormal sound is generated so that the user can be surely notified of the abnormality and the abnormal use. The safety and durability can be improved by eliminating the prevention.

In the sixth technical means, when the detection signal is judged to be abnormal, the pump is stopped and the air inflow means B
The first return pipe and the second return pipe side after closing
By switching the switching means between the forward pipe side and the second forward pipe side, operating the pump, operating the pump for a certain period of time, and then performing a washing operation to stop the pump, the pore structure part of the fine bubble generating part is particularly removed. It can be forcibly washed to facilitate restarting use.

In the seventh technical means, the user can be surely notified of the cleaning operation by displaying the cleaning operation or generating the cleaning sound during the cleaning operation. In particular, since this cleaning operation is automatically controlled, it is possible to eliminate the anxiety of the user etc. by notifying what the operation is.

[0030]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIG.
A description will be given according to the piping circuit diagram when large bubbles are generated and (b) when fine bubbles are generated. Reference numeral 1 denotes a water tank such as a bathtub for generating bubbles in water, and 2 denotes a fine bubble generating portion for generating fine bubbles in the water of the water tank 1, which communicates with the water tank 1 through a large bubble generating portion 3 integrated in series. The large bubble generator 3 is attached to the water tank 1 and communicates with the air inflow means A25 to generate large bubbles in the water. 5
Is a pump that circulates the water 4 in the water tank 1, and has a discharge part 6 and a suction part 7.

Reference numeral 8 denotes a bypass circuit, one end of which is connected to the discharge portion 6 of the pump 5 and the other end of which is connected to the suction portion 7, and the first switching means 10 is provided on the way to provide a motor type two-way valve. Second outflow pipe 11 provided with outflow pipe 9 and flow rate detection device 27
The branching units 12 and 13 that branch into
A second switching means 14 for opening and closing the bypass circuit 8 on the downstream side of 13 includes a motor type two-way valve.

Reference numeral 15 is an ejector portion connected between the second switching means 14 and the suction portion 7 of the pump 5, and an air inflow portion 16 for letting air in only when fine bubbles are generated, and a water tank when fine bubbles are generated and large bubbles are generated. The water inflow part 17 which inflows 1 water 4 is provided. Reference numeral 18 denotes a resistance portion formed by reducing the pipe diameter of the water inflow portion 17 or the second return pipe 21 in the vicinity of the water inflow portion 17, and is for causing a negative pressure of water and air to flow into the ejector portion 15.

Reference numeral 19 is a suction part 7 of the pump 5 for the water 4 in the water tank 1.
This return pipe 19 is a third switching means 22 for switching the return water to the second return pipe 21 when fine bubbles are generated and to the first return pipe 20 and the second return pipe 21 when large bubbles are generated. It consists of a motorized three-way valve. Reference numeral 23 denotes an air backflow prevention device provided in the air inflow portion 16 or in the vicinity thereof. The air backflow prevention device 23 prevents air and water from flowing back to an air control device 24 that controls the amount of air when fine bubbles are generated, and stabilizes the air. It allows air to flow in and communicates with the air inflow means B26.

29 is a pump 5, a first switching means 10,
It is an operation unit for the control means 28 connected to the second switching means 14, the third switching means 22, the air inflow means A25, and the air inflow means B26, and is provided with a large bubble button and a fine bubble button.

The operation of bubble generation in the embodiment will be briefly described below. (A) Operation of large bubble generation When the operation unit 29 gives an instruction to generate a large bubble and the large bubble switch is turned on, the control means 28 controls as follows. The second switching means 14 to the closing side of the bypass circuit 8,
The third switching means 22 is connected to the first return pipe 20 and the second return pipe 2.
The first switching means 10 is opened on the first side to switch between the first forward pipe 9 and the second forward pipe 11. Then, when the pump 5 starts to operate, the water 4 in the aquarium 1 flows from the return pipe 19 to the first position.
The pump 5 passes through two paths of the return pipe 20 and the second return pipe 21.
Is sucked into the suction unit 7.

At this time, the intake from the two routes is to secure a large amount of water necessary for the generation of large bubbles. Then, it is discharged from the discharge part 6 of the pump 5 to the bypass circuit 8. Since the bypass circuit 8 is closed by the second switching means 14 for the discharged water 4, the water 4 is discharged from the branch portion 12 to the first outflow pipe 9
Then, from the branch portion 13 to the second outflow pipe 11 and two routes,
The large air bubble generating unit 3 discharges the liquid in a good and refreshing manner. At this time,
The flow rate detection signal from the flow rate detection device 27 provided in the second outflow pipe 11 is stopped.

Due to this discharge force, the air that has flowed in from the air inflow means A25 that has already been opened at the same time as the operation of the pump 5 is mixed with water and spreads in the water tank 1 to generate large bubbles. At this time, the reason for flowing the water into the second outflow pipe is to secure a large amount of water necessary for the generation of large bubbles, and
Since it is composed of pores, the pores are likely to be clogged, so that a cleaning operation is performed every time a large bubble is generated so that fine bubbles can be stably generated.

(B) Operation of generating fine bubbles When the operation unit 29 gives an instruction to generate fine bubbles and the fine bubble switch is turned on, the control means 28 controls as follows. The first switching means 10 is closed to close the second forward pipe 11.
Side, the third switching means 22 is switched to the second return pipe 21 side, and the second switching means 14 is switched to the bypass circuit 8 opening side. When the pump 5 starts operating, the water tank 1
Water 4 passes through the return pipe 19 and the second return pipe 21, and is sucked in a negative pressure from the water inflow portion 18 of the ejector portion 15.

When this water 4 is sucked into the suction portion 7 of the pump 5, the pressure on the suction side of the pump 5 rises and the pressure on the discharge portion 6 side also rises. That is, since the discharge port of the fine bubble generating portion 2 is formed of the fine pores, the pump 5 is operating in a state of substantially shut-off operation, and therefore the suction portion 7
The pressure on the side increases and the shut-off pressure of the pump 5 is applied to increase the pressure, and the pump 5, the bypass circuit 8, and the second outflow pipe 11 are pressurized.

In such an operating state, air is introduced from the air inflow means B26 which is opened at the same time as the operation of the pump 5, and the air control device 24 makes a constant and stable air amount through the air backflow prevention device 23. The air inflow portion 16 sucks the ejector portion 15, and the suction portion 7 enters the pump 5 and the discharge portion 6 enters the bypass circuit 8 side and the branch portion 1.
3 to both the second outflow pipe 11. At this time, since the bypass circuit 8 and the second outflow pipe 11 are boosted to a high pressure, the air previously sucked is in a dissolved state. At this time, the flow rate detection device 27 provided in the second outflow pipe 11 operates to detect the flow rate.

Then, the operation is controlled by judging whether or not the flow rate detection signal is at the set flow rate, that is, whether it is normal or abnormal. When it is determined to be normal, the pump 5 is operated as it is, and when the water in which the air is dissolved passes through the fine air bubble generation unit 2, the air is rapidly decompressed and the dissolved air becomes fine air bubbles and passes through the large air bubble generation unit 3 and the water tank. Spreads milky white in 1. The inflowing air is sucked from the suction part 15 of the pump 5, finely atomized by the high-speed rotary blades of the pump 5, the gas-liquid contact efficiency is increased, and the high-pressure water circuit including the pump 5 almost instantaneously It is melted under pressure.

When the undissolved air has a water amount Q1 discharged from the branch portion 13 provided in the bypass circuit 8, a recirculated water Q2, and a water amount Q3 flowing from the water inflow portion 18 of the ejector portion 15, Q1 = Q3, That is, the amount of water discharged from the fine bubble generating portion 2 becomes Q1, and only the discharged water amount Q1 is made to flow in as Q3. On the other hand, it is desirable to increase the amount Q2 of water recirculated to the bypass circuit 8 as much as possible.
This is because, assuming that the Q2 / Q1 ratio is the number of circulations, by increasing this circulation ratio, the undissolved air can be further dissolved under pressure in the bypass circuit 8.

FIG. 2A is a graph of FIG.
(B) is a control flowchart when fine bubbles are generated. First, in the large bubble generation operation of (a), when the large bubble switch of the operation unit 29 is turned on (S1), the first switching means 10 is closed (S2), and the third switching means 22 is set to the second return pipe. The second switching means 14 is opened on the 21st side (S3) (S4). These (S2) to (S4) are the standard control means before the large bubble generating operation in the piping circuit diagram shown in FIG. Next, the pump 5 is operated (S5), and the air inflow means A2
When 5 is opened (S6), large bubbles are generated from the large bubble generator 3. At this time, the flow rate detection device 27 provided in the second outflow pipe 11 does not operate (S7), and the input signal to the control means 28 is stopped.

On the other hand, in the fine bubble generation operation of (b), when the fine bubble switch of the operation unit 29 is turned on (S8), the first switching means 10 is closed (S9), and the third switching means 22 is turned on. The first return pipe 20 side and the second return pipe 21 side are switched (S10), and the second switching means 14 is opened (S1).
1). These (S9) to (S11) are the standard control means before the fine bubble generation operation in the piping circuit diagram shown in FIG. Next, the pump 5 is operated (S12), and the air inflow means B
When 26 is opened (S13), air is melted under pressure, and is rapidly decompressed in the fine bubble generation section 2 through the second outflow pipe 11, and the dissolved air is re-bubbled to generate fine bubbles.
At this time, the flow rate detection device 27 provided in the second outflow pipe 11 operates (S14), and a signal for determining whether the flow rate detection signal is normal or abnormal (S15) is input / output to / from the control means 28.

FIG. 3 shows a control flow chart in the case of changing from a fine bubble to a large bubble, which will be described below. Turn on the fine bubble switch in (S8)
From (1) to (S15) to the determination of the flow rate detection signal, the same control and the same flow code as those in the embodiment of FIG. When the flow rate detection device 27 provided in the second outflow pipe 11 operates (S7), the flow rate detection device 27 detects the flow rate and determines whether the flow rate detection signal is normal (S15). Bubble operation (not shown).

Then, when a change is instructed from the generation of fine bubbles to the generation of large bubbles by the operation unit 29, that is, the large bubble switch is turned "on" (S16), the control means 28 preferentially closes the air inflow means B26. (S17), and the flow rate detection device 2
7 is stopped (S18). And this flow rate detection device 27
The operation of generating large bubbles is performed in a state where the is stopped (S19).
The operation of the large bubbles (S19) means the second switching means 1
4 is closed, the third switching unit 22 is switched to the first return pipe 20 side and the second return pipe 21 side, the first switching unit 10 is opened, and then the air inflow unit A25 is opened. ing.

However, when the flow rate detection signal of the flow rate detection device 27 is determined to be abnormal (S15), the pump 5 is stopped (S20) and the air inflow means B26 is closed (S2).
1). Then, an abnormality display (S22) is displayed on the operation unit 29 so that the user can see it.

Next, FIG. 4 shows a control flow chart of the first modification of FIG. 3 described above, and only differences from FIG. 3 will be explained. That is, in FIG. 3, even if the large bubble switch is changed to “ON”, the air inflow means B26 is operated in the state where the pump 5 is operated.
Is a control means for closing the flow rate detecting device 27 and stopping the flow rate detecting device 27 to operate to generate a large bubble. In FIG. 4, when the large bubble switch is turned on (S23), the pump 5 is stopped ( S
24), the air inflow means B26 is closed (S25), and the flow rate detection device 27 is stopped (S26).

Then, with the flow rate detecting device 27 stopped, the operation for generating large bubbles is performed (S27). The operation of generating large bubbles (S27) means that the second switching means 14 is closed while the pump 5 is stopped and the third switching means 22 is switched between the first return pipe 20 side and the second return pipe 21 side, The first switching means 10 is opened. When the respective switching is completed, the pump 5 is operated again, and the air inflow means A2
It means a control means for opening 5.

The major difference between FIG. 3 and FIG. 4 is the difference in the control means for switching the respective switching means depending on whether the pump 5 is operating or stopped. When switching to the generation of large bubbles while operating the pump 5, the switching order of the switching means, that is, the second switching means 14 is closed as the order 1, and the third switching means 22 is set as the order 2 to the first return pipe 20 side. By switching to the second return pipe 21 side and setting it as the control means for opening the first switching means 10 in the order of 3, the negative flow from the air backflow prevention device 23 of the air inflow portion 16 of the ejector portion 15 to the air inflow means B26. The pressure can be a minimum negative pressure.

As a result, the opening torque of the air inflow means B26 at the time of the fine bubble generation operation becomes a small torque, and the opening can be surely performed. On the other hand, when the pump 5 is stopped and switched to the generation of large bubbles, the switching order of the switching means can be switched simultaneously regardless of the order, and the switching can be performed in a short time. Moreover, the negative pressure to the air inflow means B26 due to the switching should be eliminated. In addition, safety, such as a small switching torque of the switching means,
Durability, reliability, etc. can be remarkably improved.

Further, FIG. 5 shows a control flowchart of the second modified example of FIG. 3, and only differences from FIG. 3 will be described. That is, in FIG. 3, the control means operates the flow rate detection device 27 after opening the air inflow means B26 in (S13) (S14), but in FIG. 5, the pump 5 is operated (S1).
2), the flow rate detection device 27 is operated (S28). Then, it is determined whether the flow rate detection signal is normal (S29), and if normal, the air inflow means B26 is opened (S30).
At the same time, during the fine bubble generation operation, it is constantly determined whether the set flow rate is normal or abnormal (S31).

If the flow rate detection signal of (S29) is abnormal with respect to the set flow rate, the pump 5 is stopped (S32).
Then, the abnormality is displayed on the operation unit 29 (S22). Also (S3
When the flow rate detection signal of 1) determines an abnormality, the pump 5 is stopped (S20) and the air inflow means B26 is closed (S21).
Then, the abnormality is displayed on the operation unit 29 (S22). (S31)
If the flow rate detection signal of is normal, the fine bubble operation is performed as it is, and a change from the generation of the fine bubbles to the generation of the large bubbles is instructed by the operation unit 29, that is, the large bubble switch “ON” of (S16) described in detail in FIG. The description is omitted because the same control means is used from the step S <b> 19 to the large bubble generation operation.

Next, FIG. 6 shows a second embodiment in which the three switching means of the first switching means 10, the second switching means 14 and the third switching means 22 are switched to two in the piping configuration diagram of FIG. 1 (b). It is a means. Portions having the same structure and function as those of the embodiment of FIG. 1 are designated by the same reference numerals, detailed description thereof will be omitted, and different portions will be mainly described. That is, in the bypass circuit 8, a motor type three-way valve as the first switching means 30, a motor type two-way valve as the second switching means 31 in the first return pipe 20 branched from the branch portion 32 of the return pipe 19, and the other. , The second return pipe 21 branched from the branch portion 32
Each of the flow rate detecting devices 27 is arranged in the above, and a control means 33 for controlling each of them is provided.

FIG. 7 shows a control flow chart in the case of changing bubbles from generation of fine bubbles to generation of large bubbles in FIG. When the fine air bubble switch is turned on (S33), the first switching means 30 is switched so as to communicate with the second forward pipe 11 side and the bypass circuit 8 side (S34), and the second return pipe 20 is provided with the second return pipe 20. The switching means 31 is closed (S35). The control means 33 from the operation of the pump 5 (S36) to the abnormality display (S46) is the same control means as in the control flowchart of FIG.

FIG. 8 shows a control flow chart of the first modified example of FIG. 7. Particularly, when it is determined that the flow rate detection signal is abnormal, the control means for automatically cleaning the second outflow pipe 11, the fine bubble generating portion 2 and the like. is there. From (S33) to (S39),
Since the control means is the same as that in FIG. 7, the description thereof will be omitted. (S3
If it is determined that the flow rate detection signal of 9) is abnormal, (S
The control means moves from 47) to (S55). That is, the pump 5 is stopped (S47), and the air inflow means B26
Is closed (S48).

Next, the second switching means 31 is opened (S4
9) and connect the first return pipe 20 side and the second return pipe 21 side,
The first switching means 30 is connected to the first forward pipe 9 side and the second forward pipe 1
The communication is switched to the 1 side (S50). Then, the pump 5 is operated again (S51), and the operation unit 29 is operated.
The washing display of is turned on (S52). Next, when the preset operating time t of the pump 5 elapses (S53), the pump 5
Is stopped (S54) and the washing display is turned off (S55) to automatically wash.

The flow rate detecting device 27 according to the present invention is a water amount sensor, a float switch, or the like.
The abnormality determination condition of the flow rate detection signal from the flow pipe is, in particular, the return pipe portions 19 and 21 and the forward pipe portion 11 during the fine bubble operation sequence.
When the fine air bubble generating unit 2 and the like are clogged, the pressure rises abnormally and the flow rate decreases. This decrease in flow rate is determined by the output signal as the flow rate detection signal.

On the other hand, when the flow rate is decreased as described above, it means that the pressure is abnormally increased. In particular, if the pump 5 is subjected to an abnormally high pressure, water leakage or worst case pump 5 may be destroyed. 11. Since the bubble generating device becomes defective or unusable due to water leakage or destruction from the connection part of the bypass circuit 8, the flow amount is detected by the flow amount detecting device 27, and it is judged whether it is normal or abnormal. If so, by stopping the pump 5 and further cleaning the clogging, it is possible to provide a bubble generating device that is safe, has excellent durability, and is free of malfunctions. In addition, by displaying a sound or generating a sound when an abnormality occurs, the user can be surely notified and the prevention of the abnormal use can be eliminated.

[0060]

As described above, the bubble generating device according to the first aspect of the present invention is provided with the flow rate detecting device in the second outflow pipe or the second return pipe, and when the fine bubble is generated, the flow rate detecting device is operated to normally operate. Whether the piping circuit is clogged or leaked can be detected as a substitute by determining whether it is abnormal or abnormal. Further, in particular, wear of the pore forming portion of the fine bubble generating portion and clogging due to foreign matter can be similarly detected as a substitute. And the safety, durability, and reliability of the device can be significantly improved.

On the other hand, when a large bubble is generated, the operation of the flow rate detecting device is stopped to increase the massage effect on the generating nozzle portion of the large bubble generating portion, so that a resistor such as a hand, foot or back is brought closer. Since the discharge flow rate is large, the influence of this resistor is large, and the flow rate changes easily and significantly. The means for controlling such irregular changes in the flow rate are
There is a problem that the flow rate detection device is expensive, requires a very complicated sequence setting, and many errors occur when it is difficult to make a determination.When a large bubble occurs, a simple and easy control means can be used. it can.

Further, in the bubble generating apparatus according to the second aspect of the present invention, the switching means is the two switching means, and it is advantageous in that it is economical and the switching time can be shortened. Further, it has the same effect as that of the above-mentioned claim 1.

Further, in the bubble generating device according to the third aspect of the present invention, when the detection signal of the flow rate detecting device determines that there is an abnormality, the pump is immediately stopped and the air inflow means B is closed, whereby the pump and the bypass are closed. Prevents abnormal operation of circuits and improves the safety and durability of piping circuits.

Further, in the bubble generating apparatus according to claim 4 of the present invention, at the same time when the pump is operated, the flow rate detecting device is operated to determine whether it is normal or abnormal, thereby determining whether the pump is operating normally or switching means. The safety can be further improved because abnormalities can be detected in the initial stage as to whether or not is normally switched.

Further, in the bubble generating apparatus according to the fifth aspect of the present invention, when the detection signal is determined to be abnormal, the user or the like can be surely notified of the abnormality by displaying or sounding. Further, it is possible to eliminate the prevention of abnormal use and ensure the safety of the user.

Further, in the bubble generating apparatus according to the sixth aspect of the present invention, when the detection signal is judged to be abnormal, the washing operation is automatically carried out, and in particular, the pore structure portion of the fine bubble generating portion is clogged. Foreign substances can be forcibly washed to facilitate restart operation.

The bubble generating device according to the seventh aspect of the present invention lastly displays a sound and a voice during the cleaning operation and at the end of the cleaning operation to surely inform the user of the cleaning operation and eliminate anxiety. You can

[Brief description of drawings]

FIG. 1A is a configuration diagram showing a large bubble generation in a bubble generation device according to a first embodiment of the present invention. FIG. 1B is a configuration diagram showing a fine bubble generation in the device.

FIG. 2A is an operation flowchart of a large bubble generation control unit of the apparatus. FIG. 2B is an operation flowchart of a fine bubble generation control unit of the apparatus.

FIG. 3 is an operation flowchart of control means for changing from generation of fine bubbles to generation of large bubbles in the apparatus.

FIG. 4 is an operation flowchart of control means for changing from generation of fine bubbles to generation of large bubbles in the first modified example of the same device.

FIG. 5 is an operation flowchart of control means for changing from generation of fine bubbles to generation of large bubbles in the second modified example of the apparatus.

FIG. 6 is a configuration diagram showing when fine bubbles are generated in the bubble generating apparatus according to the second embodiment of the present invention.

FIG. 7 is an operation flowchart of control means for changing the generation of fine bubbles and the generation of large bubbles in the same apparatus.

FIG. 8 is a flowchart of a cleaning operation of the control means when fine bubbles are generated in the first modified example of the apparatus.

FIG. 9 is a system configuration diagram showing a conventional jet bath device.

FIG. 10 is a sectional view of a shuttle valve of the same device.

FIG. 11 is a sectional view of a relief valve of the same device.

FIG. 12 is a cross-sectional view of a low pressure jet nozzle of the same device.

[Explanation of symbols]

 1 Water Tank 2 Micro Bubble Generation Part 3 Large Bubble Generation Part 5 Pump 6 Discharge Part 7 Suction Part 8 Bypass Circuit 9 First Outgoing Pipe 10, 30 First Switching Means 11 Second Outgoing Pipe 12, 13, 32 Branching Portion 14, 31 2nd switching means 15 Ejector part 16 Air inflow part 17 Water inflow part 18 Resistance part 19 Return pipe 20 1st return pipe 21 2nd return pipe 22 3rd switching means 23 Air backflow prevention device 24 Air control device 25 Air inflow means A 26 Air Inflow Means B 27 Flow Rate Detection Device 28, 33 Control Means 29 Operation Section

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yukinori Ozaki 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Yu Kawai, 1006 Kadoma, Kadoma City, Osaka Matsushita Electric Industrial Co., Ltd. (72) Inventor Kunio Nakamura 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (7)

[Claims] 1. A water tank, a bubble jetting device provided in the water tank, comprising a fine bubble generating portion and a large bubble generating portion, a pump for circulating water in the water tank, and a discharge portion and a suction portion of the pump. The bypass circuit with both ends connected to the bypass circuit and the bypass water of this bypass circuit are branched and communicated to the large bubble generating section.
A first switching means provided in the forward pipe and a second forward pipe communicating with the fine bubble generating portion are provided, and communicate with the first forward pipe and the second forward pipe when the large bubbles are generated, and the second forward pipe when the fine bubbles are generated. And an ejector unit having an inlet and an outlet connected in the middle of the bypass circuit and having a water inlet and an air inlet,
A second switching unit for controlling bypass water upstream of the ejector unit, a resistance unit for allowing negative pressure of water and air to flow into a part of the ejector unit, and an air backflow prevention device in the air inflow unit are provided. An air control device that communicates with the prevention device and adjusts the amount of air, an air inflow unit B upstream of the air control device, and an air inflow unit A that communicates with the large bubble generating unit.
And a return pipe for sucking the water in the water tank into the suction part of the pump, a first return pipe that branches the return water of the return pipe and communicates with the suction part of the pump when a large bubble is generated, and a water inflow part of the ejector part. A second return pipe communicating with the second return pipe and a third switching means for switching the flow to the second return pipe communicating with the water inflow portion of the ejector portion when fine bubbles are generated are provided, and the flow rate to the second forward pipe or the second return pipe is provided. A detection device is provided, and when fine bubbles are generated, control operation is performed by determining whether the flow rate detection device is normal or abnormal based on the detection signal, and when large bubbles are generated, control means for stopping the detection signal of the flow rate detection device is provided. Bubble generator. 2. A water tank, a bubble jetting device provided in the water tank, comprising a fine bubble generating portion and a large bubble generating portion, a pump for circulating water in the water tank, and a discharge portion and a suction portion of the pump. A bypass circuit having both ends connected to each other, a bypass pipe that branches the bypass water of the bypass circuit, and communicates with the large air bubble generating section that communicates with the air inflow means A, and a second outflow tube that communicates with the fine bubble generating section. And a first switching means for switching the flow to the first forward pipe and the second forward pipe when large bubbles are generated, and to the second forward pipe when fine bubbles are generated, and between the first switching device and the suction part of the pump. An ejector portion having an inlet and an outlet connected to each other and having a water inflow portion and an air inflow portion, and a resistance portion for negatively inflowing water and air into a part of the ejector portion,
An air backflow prevention device is provided in the air inflow part, an air control device communicating with this air backflow prevention device to adjust the amount of air, an air inflow means B upstream of this air control device, and the water in the aquarium pumped by a pump. Of the return pipe for sucking into the pump, a first return pipe that branches the return water of the return pipe and communicates with the suction part of the pump when large bubbles are generated, and a second return pipe that communicates with the water inflow part of the ejector part, and fine bubbles. A second switching unit that switches the flow to a second return pipe that communicates with the water inflow portion of the ejector unit at the time of generation is provided, and a flow rate detection device is provided at the second forward pipe or the second return pipe, and when fine bubbles are generated, A bubble generating device comprising control means for controlling operation by determining whether the flow rate detecting device is normal or abnormal and for stopping the signal of the flow rate detecting device when a large bubble is generated. 3. The bubble generating apparatus according to claim 1, wherein the pump operation is stopped and the air inflow means B is closed when the detection signal determines an abnormality. 4. When the operation switch for generating fine bubbles is turned on, the pump is operated and the flow rate detector is operated to determine whether the detection signal is normal or abnormal. The air bubble generator according to claim 1 or 2, which is opened or, in the case of abnormality, stops the operation of the pump. 5. The bubble generating apparatus according to claim 3, wherein when the detection signal is determined to be abnormal, an abnormal display or an abnormal sound is generated. 6. When the detection signal determines an abnormality, after stopping the pump and closing the air inflow means B, the first return pipe and the second return pipe are connected to the first return pipe and the second return pipe. The bubble generating apparatus according to claim 1 or 2, wherein the switching means is switched to the forward pipe side, the pump is operated, and after the pump is operated for a certain period of time, a cleaning operation is performed to stop the pump. 7. The bubble generating apparatus according to claim 6, wherein during the cleaning operation, a cleaning display or a cleaning sound is generated.