JP5508235B2 - Microbubble generator - Google Patents

Description

  The present invention relates to a fine bubble generator attached to a bathtub.

  Conventionally, as shown to Fig.2 (a), the fine bubble generator 1 which is attached to the bathtub 2, inhales the bathtub water in the bathtub 2, and makes the sucked bathtub water contain a fine bubble and discharge it in the bathtub 2. Has been proposed (see Patent Document 1).

  The fine bubble generating device 1 has a suction hole 22 and a discharge hole 23 provided in a bathtub 2 communicated with each other through a communication pipe 3, and an air mixing part 7, a pump part 5, and an air A liquid dissolution tank 6 is provided.

  The aeration unit 7 is connected to the pump unit 5 through the communication pipe 3, and as shown in FIG. 2 (b), a venturi unit 70 serving as a flow path through which bath water passes, a tube 71, It consists of a check valve 72 and an air suction nozzle 73. The venturi section 70 has a decompression section 74 that is in a decompressed state when the bath water passes, and one end of a tube 71 is connected to the decompression section 74 in communication. An air suction nozzle 73 is connected to the other end of the tube 71 via a check valve 72.

  In the fine bubble generating device 1 having the above-described configuration, when the pump unit 5 is started, the bathtub water in the bathtub 2 is sucked from the suction hole 22, and this bathtub water passes through the communication pipe 3, and the aeration unit 7 (venturi unit). 70). At this time, the pressure reducing portion 74 of the venturi portion 70 is in a pressure reducing state due to the venturi effect, the check valve 72 is opened, the tube 71 and the air suction nozzle 73 are communicated, and air is sucked from the air suction nozzle 73. This air reaches the decompression section 74 and is mixed into the bathtub water passing through the venturi section 70.

JP-A-2005-324001

  In the microbubble generator 1 having the above configuration, when the pump unit 5 stops driving, bath water does not flow into the venturi unit 70, so the decompression unit 74 is not in a decompressed state, and the check valve 72 sucks air into the tube 71. The nozzle 73 is not in communication.

  At this time, a part of the bath water flows into the check valve 72 through the tube 71, and dirt (soap residue, oil, dirt, scale, etc.) of the back-flowed bath water is used for the seal portion of the check valve 72. In some cases, the check valve 72 may be clogged due to being mixed with grease or the like. In this case, there is a problem that the check valve 72 does not operate even when the pump unit 5 is driven again, and the tube 71 and the air suction nozzle 73 are not in communication with each other.

  Then, this invention makes it a subject to provide the fine bubble generator which suppressed that the valve provided in the part which takes in the air mixed in bathtub water was blocked.

  The fine bubble generating device of the present invention for solving the above-mentioned problem is that a suction hole and a discharge hole provided in a bathtub communicate with each other through a communication pipe, and an air mixing part and a pump part are provided in the flow path of the communication pipe. In the fine bubble generating apparatus provided with the above, the aeration unit is composed of a venturi unit having a decompression unit and an air suction nozzle communicating with the decompression unit via an electrically driven valve, and the venturi unit is The electric drive valve is disposed close to the pump portion, and the electric drive valve is integrally attached to the venturi portion.

  The fine bubble generator of the present invention further includes a control unit that controls opening and closing of the electrically driven valve and controls and detects the rotational speed of the impeller in the pump unit, and the control unit includes the pump unit. It is preferable that the electric drive valve is controlled to be closed until it is detected that the rotation has been stabilized based on the rotation speed of the impeller after starting.

  The fine bubble generator of the present invention further includes a control unit that controls opening and closing of the electrically driven valve and controls and detects the rotational speed of the impeller in the pump unit, and the control unit includes the pump unit. During the driving, the electrical operation is performed until it is detected that the rotation is unstable based on the rotational speed of the impeller until the stable rotation is detected based on the rotational speed of the impeller. It is preferable to perform control to close the drive valve.

  The fine bubble generating apparatus of the present invention can suppress clogging of an electrically driven valve provided in a portion that takes in air to be mixed into bathtub water.

The fine bubble generator of embodiment of this invention is shown, (a) is the whole schematic explanatory drawing, (b) is sectional drawing of an aeration part, (c) is a perspective view of the whole. The conventional fine bubble generator is shown, (a) is the whole schematic explanatory drawing, (b) is sectional drawing of an aeration part.

  Hereinafter, an example of an embodiment of the present invention will be described with reference to the accompanying drawings.

  As shown in FIG. 1 (c), the fine bubble generating device 1 of the present embodiment is attached to the outside of the wall surface 20 of the bathtub 2, sucks the bathtub water in the bathtub 2, and contains fine bubbles in the sucked bathtub water. It is discharged into the bathtub 2. Hereinafter, the upstream side and the downstream side are determined on the basis of the flow of the bathtub water, and each configuration will be described.

  The wall surface 20 of the bathtub 2 is provided with a device mounting portion 21 that penetrates into and out of the bathtub 2. The apparatus mounting portion 21 is provided with a suction hole 22 that serves as a suction port for bathtub water in the bathtub 2 and a discharge hole 23 that serves as a discharge port for the suctioned bathtub water into the bathtub 2.

  One end and the other end of the communication pipe 3 are connected to the suction hole 22 and the discharge hole 23, respectively, and the suction hole 22 and the discharge hole 23 are in communication with each other through the communication pipe 3. In the flow path of this communication pipe 3, an air mixing part 4, a pump part 5, and a gas-liquid dissolution tank 6 are provided in order from the upstream side. As shown in FIG. 1A, a control unit 8 is electrically connected to the pump unit 5. The pump unit 5 is controlled by operating the operating unit 9 electrically connected to the control unit 8. The operation device 9 is installed in a bathroom or a dressing room.

  The fine bubble generating apparatus 1 according to the present embodiment includes the suction hole 22, the discharge hole 23, the communication pipe 3, the air mixing part 4, the pump part 5, the gas-liquid dissolution tank 6, the control unit 8, and the operating device 9. Is done.

  The pump unit 5 includes an impeller 50 inside. After the impeller 50 rotates, the pump unit 5 sucks the bathtub water in the bathtub 2 from the suction hole 22, passes it through each component provided in the flow path of the communication pipe 3, and then from the discharge hole 23. Discharge into the bathtub 2.

  The air mixing part 4 is connected to the suction hole 22 through the communication pipe 3. This air mixing part 4 is a part which supplies air to the bathtub water to pass. A detailed configuration will be described later.

  The gas-liquid dissolution tank 6 is connected to the pump unit 5 through the communication pipe 3. The gas-liquid dissolution tank 6 is a part that dissolves the air supplied from the aeration unit 4 in the bathtub water. Reference numeral 60 denotes an exhaust pipe provided in the gas-liquid dissolution tank 6, which exhausts undissolved air in the gas-liquid dissolution tank 6. Reference numeral 61 denotes a circulation air path that returns undissolved air in the gas-liquid dissolution tank 6 to the communication pipe 3 between the pump unit 5 and the gas-liquid dissolution tank 6.

  The bathtub water in which air is dissolved in the gas-liquid dissolution tank 6 is dissolved into fine bubbles before being discharged into the bathtub 2 from the discharge hole 23, and becomes bath water containing fine bubbles. The discharge hole 23 may be provided with a pressure control unit that jets the bathtub water containing the fine bubbles.

  The configuration of the aeration unit 4 of the present embodiment will be described in more detail.

  As shown in FIG. 1B, the aeration unit 4 includes a venturi unit 40 serving as a flow path through which bath water passes, an electrically driven valve 42, an air suction nozzle 44, and a filter 45.

  The venturi portion 40 is formed of a cylindrical rigid member, and has a small diameter portion in which the flow path area is narrowed in the middle of the flow path. When the bathtub water passes through the small diameter portion, the flow rate of the bathtub water increases, and the small diameter portion and the vicinity of the downstream side of the small diameter portion are in a reduced pressure state. The small-diameter portion and the vicinity of the downstream side are referred to as a decompression portion 41.

  The venturi part 40 has an upstream end connected to the suction hole 22 through the communication pipe 3 and a downstream end connected to the pump part 5 through the communication pipe 3. Yes. Here, the venturi section 40 is disposed at a position close to the pump section 5. The venturi part 40 may be directly connected to the pump part 5 at its downstream end without the communication pipe 3.

  A communication hole 400 that penetrates into and out of the venturi 40 is formed in the decompression unit 41 of the venturi 40. An electrically driven valve 42 is directly attached to the outside of the venturi 40 at a portion communicating with the communication hole 400. That is, the electrically driven valve 42, the venturi part 40, and the pump part 5 are disposed in close proximity, and the electrically driven valve 42 and the venturi part 40 are integrated.

  In addition, one end of an air suction nozzle 44 is connected to the electrically driven valve 42, and a filter that prevents foreign matter from adhering to the air suction nozzle 44 from adhering to the other end of the air suction nozzle 44. 45 is attached.

  The electrically driven valve 42 is a valve that is driven to open and close by electricity. In this embodiment, the mechanism that opens and closes the valve by projecting and retreating an iron piece called a plunger 47 using the magnetic force of an electromagnet (solenoid) 46. It has a solenoid valve. The electric drive valve 42 may be an electric valve driven by an electric motor (motor).

  As shown in FIG. 1 (b), the electrically driven valve 42 made up of an electromagnetic valve includes a valve portion 43 that internally includes a flow path 430 that connects the air suction nozzle 44 and the communication hole 400 of the pressure reducing portion 41, and an electromagnet 46. And a drive unit 48 composed of a plunger 47. The outer shell of the drive part 48 and the valve part 43 are formed of a rigid member. The control unit 8 is electrically connected to the electromagnet 46 of the drive unit 48 via an electrical connection line 49. When the electric drive valve 42 is supplied with electricity from the control unit 8, the electromagnet 46 causes the plunger 47 to protrude toward the valve portion 43.

  The electrically driven valve 42 causes the plunger 47 to protrude to completely close the flow path 430 in the valve portion 43 (the state shown in FIG. 1B). Further, the flow path 430 is opened by retracting the plunger 47.

  The flow path 430 inside the valve portion 43 is not formed in a straight line but is formed in a shape bent in the middle. The plunger 47 opens and closes a portion of the flow path 430 that is closer to the air suction nozzle 44 than the bent portion.

  The control unit 8 that controls the electric drive valve 42 further controls and detects the rotational speed of the impeller 50 in the pump unit 5. In addition, a detection unit that detects the rotation speed of the impeller 50 may be provided separately, and the detection result detected by the detection unit may be transmitted to the control unit 8.

  The control unit 8 performs control for closing the electric drive valve 42 from the start of the pump unit 5 until it is detected that the rotation is stabilized based on the rotation speed of the impeller 50. In addition, when the control unit 8 detects that the rotation is unstable based on the rotation speed of the impeller 50 while driving the pump unit 5, after the detection, based on the rotation speed of the impeller 50. Control until the electric drive valve 42 is closed is performed until it is detected that the rotation is stable.

  Here, the state where the rotation of the impeller 50 described above is stable indicates, for example, a state where the rotation speed of the impeller 50 is within a predetermined range of the reference value. This state is a state in which the amount of air around the impeller 50 is small and the amount of bathtub water is sufficient, and the impeller 50 rotates while pushing out the bathtub water.

  The state where the rotation of the impeller 50 described above is unstable indicates, for example, a state where the rotational speed of the impeller 50 exceeds a predetermined range of the reference value. This state is a state where the amount of air around the impeller 50 is large and the amount of the bath water is small, and the impeller 50 causes the air bite to rotate idly.

  Operation | movement of the microbubble generator 1 of this embodiment mentioned above is demonstrated.

  When the operation unit 9 is operated and the pump unit 5 is started by the control unit 8, the impeller 50 in the pump unit 5 starts to rotate, and the bath water in the bathtub 2 is sucked from the suction hole 22. And this bathtub water flows into the venturi part 40, and the pressure reduction part 41 of the venturi part 40 will be in a pressure reduction state. Then, the flow path 430 closer to the decompression unit 41 than the plunger 47 of the electrically driven valve 42 in the closed state is in a decompressed state.

  At this time, when the control unit 8 detects the rotational speed of the impeller 50 of the pump unit 5 and determines that the impeller 50 is rotating in a stable state, the electric drive valve 42 is opened. .

  On the other hand, when the control unit 8 determines that the impeller 50 is rotating in an unstable state, the electric drive valve 42 is maintained in the closed state. Then, the air from the air suction nozzle 44 is not additionally supplied to the impeller 50 that performs unstable rotation, and only the bathtub water is supplied, and the amount of the bathtub water around the impeller 50 increases. As a result, when the rotation of the impeller 50 changes from an unstable state to a stable state, the control unit 8 determines that the impeller 50 is rotating in a stable state, and the electrically driven valve 42. Open.

  The flow path 430 of the valve part 43 with the electrically driven valve 42 in the open state is in a state where the pressure reducing part 41 and the air suction nozzle 44 are communicated, and air is sucked into the flow path 430 in the reduced pressure state from the air suction nozzle 44 . Here, since air is sucked through the filter 45, dust and dust contained in the air are filtered by the filter 45. The air sucked in this way is supplied to the pressure reducing part 41 through the valve part 43 and the communication hole 400 of the electric drive valve 42 and mixed into the bath water passing through the pressure reducing part 41. And the bathtub water which mixed air flows into the gas-liquid dissolution tank 6 via the pump part 5, and the mixed air is melt | dissolved in bathtub water. Thereafter, the bath water in which the air is dissolved is converted into fine bubbles before reaching the discharge hole 23, and becomes bath water containing fine bubbles. Then, the bathtub water containing the fine bubbles is discharged into the bathtub 2 from the discharge hole 23.

  Even when the pump unit 5 is driven and air is sucked into the bath 2 other than the bath water from the suction hole 22 and the impeller 50 starts rotating in an unstable state, the same operation as described above is performed. Is called.

  In the microbubble generator 1 of the present embodiment that operates as described above, the venturi unit 40 in which the electric drive valve 42 is integrally attached is disposed in the vicinity of the pump unit 5. Therefore, vibration of the pump unit 5 can be transmitted to the electrically driven valve 42 via the venturi unit 40 while the pump unit 5 is driven. Therefore, while the pump unit 5 is stopped, in the flow path 430 of the valve unit 43 of the electrically driven valve 42, the dirt of the bath water that has entered and fixed to the portion closer to the pressure reducing unit 41 than the plunger 47 is removed. Can be shaken off by vibration. Thus, in this embodiment, it can suppress that the electric drive valve 42 provided in the part which takes in the air mixed in bathtub water is blocked.

  In addition, the microbubble generator 1 of the present embodiment has the following effects compared to the case of using a check valve that automatically opens when the decompression unit 41 is in a decompressed state as in the prior art (see FIG. 2) Can be played. That is, in this embodiment, even if the decompression unit 41 is in a decompressed state, the electric drive valve 42 is not opened unless the impeller 50 of the pump unit 5 rotates in a stable state. Therefore, since the air from the air suction nozzle 44 is not additionally supplied to the impeller 50 in an unstable rotation state, the time required for the impeller 50 of the pump unit 5 to rotate in an unstable state can be shortened. As a result, the tank water can be stably shaken off.

  Further, in this embodiment, the flow path 430 of the valve portion 43 is provided in a bent shape in the middle, and the portion opened and closed by the plunger 47 is on the air suction nozzle 44 side than the bent portion, and therefore flows backward. The direction of bathtub water flow can be changed on the way. Therefore, in this embodiment, it is difficult for the bath water to flow back to the plunger 47 portion of the flow path 430.

  In summary, the fine bubble generating apparatus 1 of the present embodiment described above connects the suction hole 22 and the discharge hole 23 provided in the bathtub 2 with the communication pipe 3, and the air flows in the flow path of the communication pipe 3. A mixing unit 4 and a pump unit 5 are provided. The aeration unit 4 includes a venturi unit 40 having a decompression unit 41 and an air suction nozzle 44 that communicates with the decompression unit 41 via an electric drive valve 42. The venturi portion 40 is disposed close to the pump portion 5, and the electric drive valve 42 is integrally attached to the venturi portion 40.

  As described above, the electric drive valve 42 is integrally attached to the venturi section 40, and the venturi section 40 is disposed in the vicinity of the pump section 5 that generates vibration, so that the vibration of the pump section 5 can be efficiently and electrically prevented. This can be transmitted to the drive valve 42. Therefore, the dirt transmitted to the electrically driven valve 42 can be shaken off by the vibration transmitted to the electrically driven valve 42. In this way, it is possible to suppress clogging of the electrically driven valve 42 provided in a portion that takes in air to be mixed into the bath water.

  The microbubble generator 1 of the present embodiment includes a control unit 8 that controls the opening / closing of the electrically driven valve 42 and controls and detects the rotational speed of the impeller 50 in the pump unit 5. The control unit 8 performs control for closing the electric drive valve 42 from when the pump unit 5 is started until it is detected that the rotation is stabilized based on the rotational speed of the impeller 50.

  As described above, the fine bubble generating device 1 according to the present embodiment operates from the start of the pump unit 5 by the control unit 8 until the rotation is detected based on the rotation speed of the impeller 50. The control valve 42 can be controlled to close.

  Therefore, when the pump unit 5 is started, the electric drive valve 42 is kept closed so that air supply to the impeller 50 that performs unstable rotation is not performed. The idle rotation of the impeller 50 can be suppressed.

  The microbubble generator 1 of the present embodiment includes a control unit 8 that controls the opening / closing of the electrically driven valve 42 and controls and detects the rotational speed of the impeller 50 in the pump unit 5. While the pump unit 5 is being driven, the control unit 8 detects that the rotation is unstable based on the rotation speed of the impeller 50, and then the rotation is stabilized based on the rotation speed of the impeller 50. Control is performed to close the electrically driven valve 42 until it is detected.

  As described above, the fine bubble generating device 1 of the present embodiment detects that the rotation is unstable based on the rotation speed of the impeller 50 by the control unit 8 and then sets the rotation speed of the impeller 50. The electric drive valve 42 can be controlled to be closed until it is detected that the rotation is stable.

  Therefore, when detecting that the impeller 50 is rotating in an unstable state while the pump unit 5 is being driven, the fine bubble generating device 1 of the present embodiment closes the electric drive valve 42 and the impeller The additional supply of air to 50 can be stopped. By doing in this way, the amount of bathtub water around the impeller 50 can be increased, and the idling of the impeller 50 can be suppressed.

  Although the present invention has been described based on the embodiments shown in the accompanying drawings, the present invention is not limited to the above-described embodiments, and appropriate design changes can be made within the intended scope of the present invention. Is possible.

DESCRIPTION OF SYMBOLS 1 Fine bubble generator 2 Bathtub 22 Suction hole 23 Discharge hole 3 Communication pipe 4 Air mixing part 40 Venturi part 41 Decompression part 42 Electrically driven valve 44 Air suction nozzle 5 Pump part 50 Impeller 8 Control unit

Claims (3)

In the fine bubble generator in which the suction hole and the discharge hole provided in the bathtub are communicated with each other through a communication pipe, and the air mixing part and the pump part are provided in the flow path of the communication pipe.
The aeration unit comprises a venturi unit having a decompression unit, and an air suction nozzle that communicates with the decompression unit via an electrically driven valve,
A fine bubble generating device characterized in that the venturi portion is disposed close to the pump portion, and the electrically driven valve is integrally attached to the venturi portion. A control unit that controls opening and closing of the electrically driven valve and controls and detects the rotational speed of the impeller in the pump unit;
The control unit performs control to close the electric drive valve from the start of the pump unit until it is detected that the rotation is stable based on the rotation speed of the impeller. The fine bubble generator according to claim 1. A control unit that controls opening and closing of the electrically driven valve and controls and detects the rotational speed of the impeller in the pump unit;
The control unit detects that the rotation is unstable based on the rotation speed of the impeller while driving the pump unit, and then the rotation is stabilized based on the rotation speed of the impeller. 3. The fine bubble generating device according to claim 1, wherein control is performed to close the electric drive valve until it is detected.

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