JP6308237B2 - Cleaning device - Google Patents

Description

  The present invention relates to a cleaning apparatus for cleaning a tank.

  Sebum soil components generated from the human body by bathing are eluted in bath water. The eluted sebum soil components adhere to and accumulate on the wall surface or bottom surface of the bathtub. Performing hand-washing with a detergent on the sebum soil components accumulated in the bathtub is a heavy burden. In order to reduce the burden, a method for automatically washing the bathtub is required.

  The bathtub cleaning method disclosed in Patent Document 1 below is as follows. Provide a water outlet on the inner wall of the bathtub. A swirling water flow along the inner wall surface is formed by ejecting a water flow along the inner wall surface from the water flow port with water or hot water in the bathtub. The inner wall surface of the bathtub is washed by this swirling water flow. Gradually remove water or hot water from the drain, and wash with a swirling water flow to the bottom of the inner wall while gradually lowering the water level in the bathtub.

  The cleaning device disclosed in the following Patent Document 2 makes it possible to satisfactorily form a swirl flow in one direction with respect to the bathtub by appropriately setting the direction of the outlet provided on the inner wall of the bathtub. .

JP-A-11-123150 Japanese Patent No. 5742710

  Patent Document 1 describes that water or hot water is gradually extracted from a drain outlet while forming a swirling water flow, and the water level in the bathtub is gradually lowered to wash to the bottom side of the inner wall surface with the swirling water flow. Has been. However, in invention of patent document 1, when the water level in a bathtub becomes lower than the position of the water flow port provided in the inner wall surface, since a turning water flow cannot be formed, it cannot wash. For this reason, the vicinity of the bottom of the bathtub cannot be cleaned.

  According to the invention of Patent Document 2, it is possible to satisfactorily form a swirl flow in one direction with respect to the bathtub. If the cleaning effect using such a swirl flow can be further improved, it is considered extremely useful in cleaning the tank.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a cleaning apparatus that can improve the cleaning effect on the tank.

The cleaning device according to the present invention includes a first discharge unit that discharges liquid into the liquid inside the tank, and a second discharge unit that discharges liquid into the liquid inside the tank, the first discharge unit and second ejection portion, the interior of the tank is configured to so that to generate a swirling flow that flows in one direction along the entire circumference of the inner wall surface of the circumferential direction of the vessel, the discharge direction of the first discharge portion with respect to the horizontal plane a first angle is the angle, the second angle are different angles der an angle of the discharge direction of the second ejection portion relative to the horizontal plane is, and the first discharge portion, and a second discharge portion, the liquid inside the tank A tank adapter formed with a suction port for sucking in, and in a plan view, the suction port has a discharge direction of the first discharge portion and the second discharge portion with respect to the center line of the main body of the tank adapter. is a side near shall those who are.
In addition, the cleaning device according to the present invention includes a nozzle-like first discharge part that discharges liquid into the liquid inside the tank, a nozzle-like second discharge part that discharges liquid into the liquid inside the tank, The first discharge unit and the second discharge unit are configured to generate a swirling flow that flows in one direction along the inner circumferential wall surface of the tank in the circumferential direction of the tank. The first angle, which is the angle of the discharge direction of the first discharge portion, and the second angle, which is the angle of the discharge direction of the second discharge portion with respect to the horizontal plane, are different angles, and either the first discharge portion or the second discharge portion One of the discharge directions is an obliquely upward direction with respect to the horizontal plane, and the other of the first discharge portion and the second discharge portion is an obliquely downward direction with respect to the horizontal plane.

  According to the cleaning apparatus of the present invention, the first discharge unit and the second discharge unit that discharge liquid into the liquid inside the tank, the first angle that is the angle of the discharge direction of the first discharge unit with respect to the horizontal plane, When the second angle which is the angle of the discharge direction of the second discharge part with respect to the horizontal plane is an angle different from the horizontal plane, the cleaning effect on the tank can be improved.

It is a block diagram which shows the hot water supply system provided with the washing | cleaning apparatus of Embodiment 1. FIG. It is a top view of the bathtub adapter in Embodiment 1, and a bathtub. It is a flowchart which shows an example of the washing process of the bathtub using the washing | cleaning apparatus with which the hot-water supply system of Embodiment 1 is provided. It is a top view of the bathtub adapter in Embodiment 2, and a bathtub. FIG. 6 is a configuration diagram illustrating a hot water supply system including a cleaning device according to a third embodiment. FIG. 10 is a longitudinal sectional view showing an example of a bubble generating device in a third embodiment. FIG. 6 is a configuration diagram illustrating a hot water supply system including a cleaning device according to a fourth embodiment. FIG. 10 is a configuration diagram illustrating a hot water supply system according to a modification of the fourth embodiment. It is a flowchart which shows an example of the washing process of the bathtub using the washing | cleaning apparatus of Embodiment 4.

  Hereinafter, embodiments will be described with reference to the drawings. Elements common to the drawings are denoted by the same reference numerals, and redundant description is simplified or omitted. Note that the number, arrangement, orientation, shape, and size of the devices, instruments, and components in the present invention are not limited to the number, arrangement, orientation, shape, and size shown in the drawings in principle. In addition, the present invention can include all combinations of configurations that can be combined among the configurations described in the following embodiments.

Embodiment 1 FIG.
FIG. 1 is a configuration diagram illustrating a hot water supply system including the cleaning device according to the first embodiment. As shown in FIG. 1, the hot water supply system 1 according to the first embodiment includes a hot water storage tank 2, a bathtub adapter 3, a recirculation circulation path 4, a hot water supply flow path 5, a control device 6, and a terminal device 7. In FIG. 1, illustration of a heating device that heats hot water stored in the hot water storage tank 2 is omitted. The heating device may be any device such as a heat pump method, an electric heater method, a method using solar heat, a combustion method, or a combination of a plurality of methods. In FIG. 1, the hot water storage tank 2 and the bathtub adapter 3 are side views, the bathtub 10 is a schematic side sectional view, and the other configurations are schematic views.

  The bathtub adapter 3 includes a main body 3a, a first discharge part 3b, a second discharge part 3c, and a suction port 3d. The bathtub 10 includes a first inner wall 10a and a bottom surface 10b. The bathtub adapter 3 is installed so as to face the internal space of the bathtub 10 from the first inner wall 10 a of the bathtub 10. The first discharge unit 3 b discharges liquid into the liquid inside the bathtub 10. The 1st discharge part 3b in this Embodiment exhibits the nozzle shape which protrudes from the main body 3a. The second discharge part 3 c discharges the liquid into the liquid inside the bathtub 10. The 2nd discharge part 3c in this Embodiment exhibits the nozzle shape which protrudes from the main body 3a. The suction port 3d sucks the liquid inside the bathtub 10. The suction port 3d in the present embodiment opens on the upper surface of the main body 3a.

  The reheating circulation path 4 includes a reheating heat exchanger 4a, a forward flow path 4b, a return flow path 4c, and a circulation pump 4d. One end of the forward flow path 4b is connected to the inlet 4e of the secondary flow path of the reheating heat exchanger 4a. The other end of the forward flow path 4 b is connected to the main body 3 a of the bathtub adapter 3 outside the bathtub 10. The suction port 3d of the bathtub adapter 3 communicates with the forward flow path 4b inside the main body 3a. A circulation pump 4d is connected in the middle of the forward flow path 4b. One end of the return flow path 4c is connected to the outlet 4f of the secondary flow path of the reheating heat exchanger 4a. The other end of the return channel 4 c is connected to the main body 3 a of the bathtub adapter 3 on the outside of the bathtub 10. The flow paths of the first discharge part 3b and the second discharge part 3c of the bathtub adapter 3 communicate with the return flow path 4c inside the main body 3a.

  When the circulation pump 4d is operated, the operation is as follows. The liquid inside the bathtub 10 is drawn from the suction port 3d of the bathtub adapter 3 to the outgoing flow path 4b and guided to the reheating heat exchanger 4a. The liquid that has passed through the reheating heat exchanger 4a returns to the bathtub adapter 3 through the return flow path 4c, and is discharged from the first discharge part 3b and the second discharge part 3c into the liquid inside the bathtub 10. The arrows in FIG. 1 indicate the direction of liquid circulation in such a recirculation circulation path 4.

  Although not shown in the drawings, a circulation path for circulating hot water supplied from the hot water storage tank 2 or liquid heated by a heating device as a heat source fluid is connected to the primary side flow path of the reheating heat exchanger 4a. The When the bath water in the bathtub 10 is refilled, the following is performed. The circulation pump 4d is operated and the heat source fluid is replenished and circulated to the heat exchanger 4a. The bath water heated by receiving the heat of the heat source fluid by the reheating heat exchanger 4a returns to the bathtub 10 so that the bathtub 10 can be reheated.

  One end of the hot water supply channel 5 is connected to the hot water storage tank 2. The other end of the hot water supply flow path 5 is connected to a branch portion 4g formed in the forward flow path 4b between the reheating heat exchanger 4a and the circulation pump 4d. For example, when performing hot water filling of the bathtub 10, hot water can be supplied from the hot water storage tank 2 to the bathtub 10 via the hot water supply channel 5 and the recirculation circulation path 4. Hot water supplied from the hot water supply flow path 5 flows from the branch part 4g to the reheating heat exchanger 4a side, reaches the bathtub adapter 3 through the return flow path 4c, and from the first discharge part 3b and the second discharge part 3c. It is discharged into the bathtub 10. The hot water supplied from the hot water supply channel 5 may also flow in parallel from the branch portion 4g to the circulation pump 4d side. In that case, the hot water supplied from the hot water supply channel 5 is discharged into the bathtub 10 not only from the first discharge portion 3b and the second discharge portion 3c but also from the suction port 3d. In the middle of the hot water supply channel 5, a temperature adjustment unit (not shown) that adjusts the hot water supply temperature by mixing low temperature water supplied from a water supply or the like may be provided.

  The control device 6 controls the operation of the circulation pump 4d. The control device 6 may control operations of other actuators and heating devices (not shown) included in the hot water supply system 1. The terminal device 7 is connected to the control device 6 so as to be capable of data communication in both directions. The terminal device 7 may be installed in a bathroom. The terminal device 7 may include a user interface such as an operation unit operated by the user, a display unit for notifying the user of information, and a voice announcement device.

  The hot water storage tank 2, the reheating heat exchanger 4 a, the circulation pump 4 d, a part of the outgoing flow path 4 b, a part of the return flow path 4 c, the hot water supply flow path 5, and the control device 6 are accommodated in one housing 8. May be. A drain plug 11 for discharging the liquid inside the bathtub 10 to the outside is installed at the bottom of the bathtub 10. The control device 6 may be configured to automatically open and close the drain plug 11 with a solenoid valve.

  The first angle θ1 that is the angle of the discharge direction 3e of the first discharge portion 3b with respect to the horizontal plane and the second angle θ2 that is the angle of the discharge direction 3f of the second discharge portion 3c with respect to the horizontal plane are different from each other. The first angle θ1 is an inferior angle between the discharge direction 3e of the first discharge unit 3b and the horizontal plane in the three-dimensional space. In FIG. 1, for the sake of convenience, the first angle θ1 is shown as an angle between a straight line obtained by projecting the ejection direction 3e of the first ejection unit 3b in a direction perpendicular to the paper surface of FIG. The second angle θ2 is an inferior angle between the ejection direction 3f of the second ejection part 3c and the horizontal plane in the three-dimensional space. In FIG. 1, for convenience, the second angle θ <b> 2 is shown as an angle between a straight line obtained by projecting the ejection direction 3 f of the second ejection unit 3 c in a direction perpendicular to the paper surface of FIG. 1 and a horizontal plane. The direction of the center line of the flow path of the first discharge part 3b may be regarded as the discharge direction 3e. The direction of the center line of the flow path of the second discharge part 3c may be regarded as the discharge direction 3f.

  In the present embodiment, the configuration is as follows. The discharge direction 3e of the first discharge unit 3b is a direction that faces obliquely upward with respect to the horizontal plane. The discharge direction 3f of the second discharge unit 3c is a direction that faces obliquely downward with respect to the horizontal plane. Both the first angle θ1 and the second angle θ2 are acute angles. When the angle is defined with the first angle θ1 as a positive value, the second angle θ2 has a negative value. Conversely, when the angle is defined with the second angle θ2 as a positive value, the first angle θ1 is a negative value.

  FIG. 2 is a plan view of bathtub adapter 3 and bathtub 10 in the first embodiment. In FIG. 2, the reheating circulation path 4 is a schematic diagram, and the reheating heat exchanger 4a is not shown. As shown in FIG. 2, the first inner wall 10 a of the bathtub 10 extends in a direction perpendicular to the longitudinal direction of the bathtub 10. The bathtub 10 includes a second inner wall 10c. The second inner wall 10 c is adjacent to the first inner wall 10 a via the rounded portion (R portion) at the corner of the bathtub 10. The second inner wall 10 c extends in the longitudinal direction of the bathtub 10. The present embodiment is configured as follows. Both the 1st discharge part 3b and the 2nd discharge part 3c are arrange | positioned at the 1st inner wall 10a. The 1st discharge part 3b and the 2nd discharge part 3c discharge a liquid toward the 2nd inner wall 10c. That is, in plan view, the extension line in the discharge direction 3e of the first discharge part 3b and the extension line in the discharge direction 3f of the second discharge part 3c intersect with the second inner wall 10c.

  Instead of the illustrated configuration, the first inner wall 10a on which the bathtub adapter 3 is disposed extends in the longitudinal direction of the bathtub 10 and the second inner wall 10c extends in a direction perpendicular to the longitudinal direction of the bathtub 10. Good.

  Further, the present embodiment is configured as follows. In the plan view of FIG. 2, the third angle θ3 that is the angle of the discharge direction 3e of the first discharge part 3b with respect to the tangent line 10d of the first inner wall 10a and the angle of the discharge direction 3f of the second discharge part 3c with respect to the tangent line 10d. The fourth angle θ4 is a different angle. The third angle θ3 is an angle between a straight line obtained by projecting the ejection direction 3e of the first ejection unit 3b in a direction perpendicular to the paper surface of FIG. 2 and the tangent line 10d. The fourth angle θ4 is an angle between a straight line obtained by projecting the ejection direction 3f of the second ejection unit 3c in a direction perpendicular to the paper surface of FIG. 2 and the tangent line 10d. The third angle θ3 is an inferior angle between the ejection direction 3e of the first ejection part 3b and the tangent line 10d. The fourth angle θ4 is an inferior angle between the ejection direction 3f of the second ejection part 3c and the tangent line 10d. The third angle θ3 and the fourth angle θ4 are both acute angles. In the present embodiment, the fourth angle θ4 is larger than the third angle θ3.

  The 1st discharge part 3b may be comprised so that the discharge direction 3e can be changed manually or automatically. The 2nd discharge part 3c may be comprised so that the discharge direction 3f can be changed manually or automatically. When one or both of the discharge direction 3e of the first discharge part 3b and the discharge direction 3f of the second discharge part 3c are movable, at least when washing the bathtub 10, these directions are the directions described above. It only has to be. When the bathtub 10 is not washed, for example, during a hot water filling operation or a reheating operation, one or both of the discharge direction 3e of the first discharge portion 3b and the discharge direction 3f of the second discharge portion 3c are described above. You may face directions other than a direction.

  FIG. 3 is a flowchart illustrating an example of a cleaning process of the bathtub 10 using the cleaning device provided in the hot water supply system 1 of the first embodiment. Hereinafter, an example of the cleaning process in the present embodiment will be described with reference to FIG. In addition, you may implement the washing | cleaning process in this Embodiment using the remaining hot water of the bathtub 10. FIG. That is, you may implement the washing | cleaning process in this Embodiment using the remaining hot water after a user bathes using the bathtub 10. FIG. By performing the cleaning process using the remaining hot water in the bathtub 10, water can be saved. Needless to say, the cleaning process in the present embodiment may be performed after the hot water is newly stored in the bathtub 10 for the cleaning process.

  In the cleaning process, a detergent, that is, a surfactant is added to the hot water in the bathtub 10 in step S1 of FIG. In this case, the user may manually supply the detergent. When the apparatus which supplies a detergent automatically in the bathtub 10 is provided, you may throw in a detergent automatically. In the following description, a liquid in which a detergent is mixed with hot water in the bathtub 10 is referred to as “washing water”.

  The process proceeds from step S1 to step S2. In step S2, when one or both of the discharge direction 3e of the first discharge part 3b and the discharge direction 3f of the second discharge part 3c are movable, the discharge direction 3e and the second discharge of the first discharge part 3b These discharge directions are switched so that the discharge direction 3f of the part 3c is the direction described with reference to FIGS. Switching the discharge direction may be performed manually or automatically. If the ejection direction 3e of the first ejection part 3b and the ejection direction 3f of the second ejection part 3c are fixed, step S2 can be omitted.

  The process proceeds from step S2 to step S3. In step S <b> 3, the user presses a cleaning start button (not shown) provided in the operation unit of the terminal device 7. When the control device 6 receives a signal indicating that a cleaning start button (not shown) has been pressed from the terminal device 7, the control device 6 starts operation of the circulation pump 4d.

  The process proceeds from step S3 to step S4. In step S4, the circulation water 4 in the bathtub 10 is recirculated through the circulation path 4 by operating the circulation pump 4d. The water flow that circulates in the recirculation circulation path 4 and is discharged from the first discharge portion 3b and the second discharge portion 3c of the bathtub adapter 3 approaches the second inner wall 10c of the bathtub 10 and flows along the second inner wall 10c. The water flow generates a swirl flow 99 that flows in one direction along the circumferential direction of the bathtub 10 inside the bathtub 10 in a plan view of FIG. 2. A part of the washing water of the swirling flow 99 discharged from the first discharge part 3b and the second discharge part 3c and making a round around the inside of the bathtub 10 is sucked into the suction port 3d of the bathtub adapter 3 and passes through the recirculation circulation path 4. Recirculate. The washing water flows along the inner wall surface of the bathtub 10 by the swirling flow 99, so that the dirt on the inner wall surface of the bathtub 10 can be removed. The duration of the circulation operation in step S4 is desirably 10 minutes or 10 minutes or more, for example.

  The process proceeds from step S4 to step S5. In step S5, the operation of circulating the water flow is stopped by stopping the circulation pump 4d, and the wash water in the bathtub 10 is drained by opening the drain plug 11. The operation of opening the drain plug 11 may be performed manually, or the drain plug 11 may be automatically opened under the control of the control device 6.

  The process proceeds from step S5 to step S6. In step S6, a rinsing operation is performed in which the washing water remaining on the inner wall surface and the bottom surface 10b of the bathtub 10 is manually washed away using a shower or the like. When the rinsing operation is completed, the cleaning process is completed (step S7).

  In the present embodiment, as shown in FIG. 1, the first angle θ1 in the discharge direction 3e of the first discharge portion 3b with respect to the horizontal plane and the second angle θ2 in the discharge direction 3f of the second discharge portion 3c with respect to the horizontal plane Are different angles, the following effects are obtained when the swirling flow 99 is generated in step S4. The height of the position where the water flow discharged from the first discharge part 3b flows is different from the height of the position where the water flow discharged from the second discharge part 3c flows. Therefore, the swirling flow 99 can be formed in a wide range in the height direction from the bottom surface 10b of the bathtub 10 to the height of the liquid level. The flow velocity distribution of the swirling flow 99 can be made uniform between the bottom surface 10b of the bathtub 10 and the height of the liquid level. Therefore, the cleaning effect by the swirl flow 99 can be exerted on the inner wall surface of the bathtub 10 in a wide range in the height direction. The occurrence of uneven cleaning in the height direction of the inner wall surface of the bathtub 10 can be suppressed. The flow vector in the height direction of the water flow discharged from the first discharge portion 3b is different from the flow vector in the height direction of the water flow discharged from the second discharge portion 3c, so that the two water flows are mixed. The fluctuation of the flow velocity occurs due to the interference between the two. Since the flow velocity fluctuates in this manner, the pressure applied to the portion of the fouling fluctuates, so that the fouling is easier to remove than the steady flow velocity. Therefore, the cleaning effect can be improved even at a relatively low flow rate.

  If it is this Embodiment, the following effects are acquired because the discharge direction 3e of the 1st discharge part 3b is a direction which faces diagonally upward with respect to a horizontal surface. The swirl flow 99 can be reliably formed even in a range where the height is higher than the position of the first discharge part 3b. Of the inner wall surface of the bathtub 10, the cleaning effect by the swirling flow 99 can be reliably exerted on the inner wall surface whose height is higher than the position of the first discharge part 3b. If it is this Embodiment, the following effects are acquired because the discharge direction 3f of the 2nd discharge part 3c is a direction which faces diagonally downward with respect to a horizontal surface. The swirl flow 99 can be reliably formed even in a range where the height is lower than that of the second discharge part 3c. Of the inner wall surface of the bathtub 10, the cleaning effect by the swirling flow 99 can be reliably exerted on the inner wall surface whose height is lower than the position of the second discharge part 3c. The cleaning effect by the swirl flow 99 can be reliably exerted on at least a part of the bottom surface 10 b of the bathtub 10. Instead of the configuration shown in the figure, the discharge direction 3e of the first discharge unit 3b is set to be a direction that faces obliquely downward with respect to the horizontal plane, and the discharge direction 3f of the second discharge unit 3c is set to be a direction that faces diagonally upward with respect to the horizontal plane. Also good. Even in that case, an effect similar to the above can be obtained. Also, either the ejection direction 3e of the first ejection part 3b or the ejection direction 3f of the second ejection part 3c may be a horizontal direction.

  In the present embodiment, in the plan view of FIG. 2, the third angle θ3 in the discharge direction 3e of the first discharge part 3b with respect to the tangent line 10d of the first inner wall 10a and the discharge of the second discharge part 3c with respect to the tangent line 10d. The following effects are obtained when the fourth angle θ4 in the direction 3f is different from the fourth angle θ4. If the third angle θ3 and the fourth angle θ4 are too small, the water flow discharged from the first discharge portion 3b and the second discharge portion 3c bounces off at the second inner wall 10c, so that the swirling flow 99 flows from the second inner wall 10c. There is a possibility of leaving. If the third angle θ3 and the fourth angle θ4 are too large, it becomes difficult for the swirling flow 99 to hit the second inner wall 10c in the portion close to the first discharge portion 3b and the second discharge portion 3c, and the cleaning effect on the portion is reduced. there's a possibility that. In the present embodiment, the third angle θ3 and the fourth angle θ4 are different angles, so that the swirling flow 99 is reliably suppressed from separating from the second inner wall 10c, and the first discharge unit It is possible to reliably apply the swirl flow 99 to the second inner wall 10c near the 3b and the second discharge part 3c. In the illustrated configuration, the fourth angle θ4 is larger than the third angle θ3, but the third angle θ3 may be larger than the fourth angle θ4. Even in that case, an effect similar to the above can be obtained.

  In the present embodiment, the example in which the two discharge units of the first discharge unit 3b and the second discharge unit 3c are provided has been described. However, in the present invention, three or more discharge units may be provided. When three discharge units are provided, the angle of the discharge direction of the third discharge unit (not shown) with respect to the horizontal plane is the first angle θ1 of the discharge direction 3e of the first discharge unit 3b and the discharge of the second discharge unit 3c. The angle may be different from any of the second angle θ2 in the direction 3f, or may be the same angle as either the first angle θ1 or the second angle θ2. When four or more ejection units are provided, the angle of the ejection direction of each ejection unit with respect to the horizontal plane may be different from the angle of the ejection direction of any other ejection unit. When four or more discharge units are provided, a plurality of discharge units having the same angle in the discharge direction of the discharge unit with respect to the horizontal plane may be included.

  When the water level in the bathtub 10 before the start of the cleaning process is low, the water level in the bathtub 10 may be raised by supplying hot water from the hot water storage tank 2 to the bathtub 10 at the start of the cleaning process. On the inner wall surface of the bathtub 10, sebum dirt tends to adhere to the position of the water surface when a person is immersed in the bathtub 10 during bathing. You may raise the water level in the bathtub 10 to the water level higher than the position of the said water surface at the time of the start of a washing | cleaning process. By doing so, it becomes possible to remove the sebum dirt adhering to the position of the water surface of the inner wall surface of the bathtub 10.

  By increasing the temperature of the washing water, the solubility of sebum increases and the washing effect can be improved. You may make it the solubility of sebum become high by heating the washing water at the time of a washing | cleaning process. In that case, you may heat the temperature of the washing water at the time of a washing | cleaning process so that it may become 35 to 60 degreeC, for example. The method of heating the cleaning water may be, for example, a method of adding hot water from the hot water storage tank 2 to the bathtub 10 or a method of heating the cleaning water with the reheating heat exchanger 4a. When washing water is heated, dissolved sebum may be precipitated again when the temperature of washing water is lowered. Therefore, it is desirable to maintain the temperature of washing water at 35 ° C. to 60 ° C. until drainage is completed. .

  In the present invention, there may be provided means for periodically changing the discharge amount from the first discharge part 3b and the second discharge part 3c during the operation of generating the swirling flow 99. By periodically varying the discharge amount from the first discharge unit 3b and the second discharge unit 3c, it is possible to cause pulsation of the water flow discharged from the first discharge unit 3b and the second discharge unit 3c, As the pressure applied to the dirt fluctuates due to fluctuations in the flow rate of the pulsation, it is possible to make the dirt easier to remove than the steady flow rate. As means for periodically changing the discharge amount from the first discharge part 3b and the second discharge part 3c, for example, means for periodically changing the input frequency to the circulation pump 4d, turning on and off of the circulation pump 4d is performed. Examples include means for periodically repeating, means for periodically changing the opening degree of a flow rate control valve (not shown) arranged in the middle of the forward flow path 4b or the return flow path 4c, and the like.

  In the case where the drain plug 11 is automatically opened under the control of the control device 6 in step S5 of FIG. 3, the control device 6 may perform the following cleaning completion determination. As the cleaning completion determination, the control device 6 detects, for example, whether a preset circulating operation time has elapsed, or a contamination state of a predetermined portion of the inner wall surface of the bathtub 10 using, for example, light reflectance. To determine if the dirt has been removed. When it is determined that the cleaning is not completed in the cleaning completion determination, the control device 6 may continue or restart the operation of the circulation pump 4d. When it is determined that the cleaning is completed in the cleaning completion determination, the control device 6 opens the drain plug 11 and performs drainage.

  When the cleaning start button of the operation unit of the terminal device 7 is pressed, a display such as “tub cleaning” may be performed on the display unit of the terminal device 7. When the cleaning is completed, the display may be turned off, and the user may be notified by generating a sound or a sound from the terminal device 7 that the cleaning is completed.

  If it is this Embodiment, since the 1st discharge part 3b and the 2nd discharge part 3c can be combined as an exit of the hot water poured into the bathtub 10 at the time of hot water filling, the number of parts and cost can be suppressed. If it is this Embodiment, the 1st discharge part 3b and the 2nd discharge part 3c will be connected to the recirculation circulation path 4, and the 1st discharge part 3b and the 2nd discharge part will make the bathtub water heated at the time of reheating It can return to the bathtub 10 from 3c. For this reason, a number of parts and cost can be controlled. In this invention, you may provide the 1st discharge part 3b and the 2nd discharge part 3c separately from the entrance / exit of the recirculation circulation path 4. Moreover, you may provide the 1st discharge part 3b and the 2nd discharge part 3c separately from the exit of the hot water inject | poured into the bathtub 10 at the time of hot water filling.

  The second discharge part 3c in the present embodiment corresponds to an obliquely downward discharge part in which the discharge direction 3f is directed obliquely downward with respect to the horizontal plane. When it is assumed that the second angle θ2 in the discharge direction 3f of the second discharge portion 3c with respect to the horizontal plane is too small, the oblique downward inclination of the discharge direction 3f becomes too gentle, and thus the second discharge portion 3c is discharged from the second discharge portion 3c. May not reach the vicinity of the bottom surface 10 b of the bathtub 10. In that case, there is a possibility that the swirl flow 99 cannot be sufficiently formed to the vicinity of the bottom surface 10 b of the bathtub 10. On the other hand, when it is assumed that the second angle θ2 is too large, the obliquely downward inclination of the discharge direction 3f becomes too steep so that the water flow discharged from the second discharge portion 3c causes the bottom surface 10b of the bathtub 10 to flow. There is a possibility that it will bounce back and get confused.

  From the above viewpoint, it is desirable that the second angle θ2 is as follows. As shown in FIG. 1, let X be the distance between the tip of the second discharge portion 3 c and the bottom surface 10 b of the bathtub 10. In the plan view of FIG. 2, Y is the distance between the intersection of the extension line in the discharge direction 3f of the second discharge part 3c and the inner wall surface of the second inner wall 10c of the bathtub 10 and the tip of the second discharge part 3c. When the second angle θ2 of the discharge direction 3f of the second discharge part 3c with respect to the horizontal plane satisfies the condition | θ2 | = arctan (X / Y), the extension line of the discharge direction 3f of the second discharge part 3c is The corner between the bottom surface 10b of the bathtub 10 and the second inner wall 10c is reached. In this case, the water flow discharged from the second discharge portion 3c can reliably reach the vicinity of the bottom surface 10b of the bathtub 10, and the water flow discharged from the second discharge portion 3c rebounds at the bottom surface 10b of the bathtub 10 and is disturbed. This can be reliably suppressed. A similar effect can be obtained if the second angle θ2 is in the range of 10 ° above and below the above conditions. Therefore, by making the second angle θ2 satisfy the relationship of | θ2 | = arctan (X / Y) ± 10 °, the above-described effects can be obtained. Unlike the illustrated configuration, when the first discharge unit 3b corresponds to an obliquely downward discharge unit in which the discharge direction 3e is inclined downward with respect to the horizontal plane, the discharge direction 3e of the first discharge unit 3b is changed. By setting in the same manner as described above, the effects as described above can be obtained.

  In the present embodiment, the example in which the clockwise swirl flow 99 is generated in the plan view of FIG. 2 has been described, but it is needless to say that the counterclockwise swirl flow may be generated in the plan view.

Embodiment 2. FIG.
Next, the second embodiment will be described with reference to FIG. 4. The description will focus on the differences from the first embodiment described above, and the description of the same or corresponding parts will be simplified or omitted. FIG. 4 is a plan view of the bathtub adapter 3 and the bathtub 10A in the second embodiment.

  As shown in FIG. 4, the bathtub 10A according to the second embodiment includes a stool portion 10e. The stool portion 10e is a surface at a position higher than the bottom surface 10b of the bathtub 10A. The stool 10e has a seating surface on which a person taking a bath in the bathtub 10A can sit. The bathtub adapter 3 is attached to the first inner wall 10a which is a stepped surface between the seat 10e and the bottom surface 10b. The suction port 3d opens on the upper surface of the main body 3a of the bathtub adapter 3. The structure of the 1st discharge part 3b and the 2nd discharge part 3c of the bathtub adapter 3 is the same as Embodiment 1. FIG. The bathtub 10A includes a third inner wall 10f that faces the first inner wall 10a, a fourth inner wall 10g that faces the second inner wall 10c, and a fifth inner wall 10h that is above the stool portion 10e and faces the third inner wall 10f. Is provided.

  In the washing process of the bathtub 10A, the water level in the bathtub 10A is set higher than that of the stool 10e. If it is a washing | cleaning apparatus provided with the bathtub adapter 3 of this Embodiment, the following effects are acquired because the discharge direction 3e of the 1st discharge part 3b is a direction which faces diagonally upward with respect to a horizontal surface. The swirl flow 99 can be reliably formed even in a range where the height is higher than the position of the first discharge part 3b. For this reason, the swirling flow 99 that flows along the second inner wall 10c, the third inner wall 10f, and the fourth inner wall 10g also wraps around the region above the seat 10e and flows along the fifth inner wall 10h. If it is a washing | cleaning apparatus provided with the bathtub adapter 3 of this Embodiment, in the bathtub 10A which has the seat part 10e, it becomes possible to drop, without leaving the stain | pollution | contamination of the area | region on the seat part 10e. If it is a washing | cleaning apparatus provided with the bathtub adapter 3 of this Embodiment, comparatively low circulation flow volume is produced also with respect to bathtubs of various shapes other than the bathtub 10A which has the seat part 10e by having an effect similar to the above. However, a high cleaning effect can be obtained.

  In the second embodiment, in the plan view of FIG. 4, the suction port 3d is arranged so that the discharge direction 3e, 3f of the first discharge portion 3b and the second discharge portion 3c is relative to the center line 3g of the body 3a of the bathtub adapter 3. Is on the side facing. Thereby, the following effects are acquired. The swirling flow 99 can be surely circulated by the region above the seat 10e. It is possible to more reliably remove the dirt on the area above the stool 10e.

Embodiment 3 FIG.
Next, the third embodiment will be described with reference to FIG. 5 and FIG. 6. The description will focus on the differences from the first embodiment, and the description of the same or corresponding parts will be simplified or simplified. Omitted. FIG. 5 is a configuration diagram illustrating a hot water supply system 1A including the cleaning device according to the third embodiment. A hot water supply system 1A of the third embodiment shown in FIG. 5 is the same as the hot water supply system 1 of the first embodiment except that the first bubble generating device 12A, the second bubble generating device 12B, and the like are provided.

  The first bubble generator 12 </ b> A and the second bubble generator 12 </ b> B are arranged on the downstream side of the circulation pump 4 d in the reheating circulation path 4. In the third embodiment, an example in which two bubble generating devices, that is, the first bubble generating device 12A and the second bubble generating device 12B are provided will be described. Effects similar to those of the third embodiment can be obtained.

  The first bubble generating device 12 </ b> A is connected in the middle of the return flow path 4 c between the reheating heat exchanger 4 a and the bathtub adapter 3. An air introduction path 13A is connected to the first bubble generating device 12A. A flow rate adjustment valve 14A is installed in the air introduction path 13A. When the flow rate adjustment valve 14A is opened during the circulation operation of the follow-up circulation path 4, air is introduced into the first bubble generating device 12A through the air introduction path 13A. The first bubble generating device 12A generates bubbles by mixing the air introduced from the air introduction path 13A into the liquid. By generating bubbles with the first bubble generating device 12 </ b> A, the liquid containing bubbles can be discharged from the first discharge portion 3 b and the second discharge portion 3 c of the bathtub adapter 3. The controller 6 may control the open / close state of the flow rate adjustment valve 14A. By adjusting the opening degree of the flow rate adjusting valve 14A, the intake amount of the first bubble generating device 12A can be adjusted. By adjusting the intake amount of the first bubble generating device 12A, the diameter of the bubbles generated in the first bubble generating device 12A can be controlled.

  The second bubble generator 12B is connected in the middle of the forward flow path 4b between the circulation pump 4d and the reheating heat exchanger 4a. An air introduction path 13B is connected to the second bubble generating device 12B. A flow rate adjustment valve 14B is installed in the air introduction path 13B. When the flow rate adjustment valve 14B is opened during the circulation operation of the recirculation circulation path 4, air is introduced into the second bubble generating device 12B through the air introduction path 13B. The second bubble generation device 12B generates bubbles by mixing the air introduced from the air introduction path 13B into the liquid. By generating bubbles with the second bubble generating device 12B, the liquid containing bubbles can be discharged from the first discharge portion 3b and the second discharge portion 3c of the bathtub adapter 3. The controller 6 may control the open / close state of the flow rate adjustment valve 14B. By adjusting the opening degree of the flow rate adjustment valve 14B, the intake amount of the second bubble generating device 12B can be adjusted. By adjusting the intake amount of the second bubble generating device 12B, the diameter of the bubbles generated by the second bubble generating device 12B can be controlled.

  If it is this Embodiment 3, in the washing process of bathtub 10, the cleaning fluid containing a bubble will be generated in the 1st discharge part 3b by generating a bubble in at least one of the 1st bubble generating device 12A and the 2nd bubble generating device 12B. And it can discharge from the 2nd discharge part 3c. If it is this Embodiment 3, the swirl | vortex flow 99 containing a bubble can be formed. In the third embodiment, the cleaning effect can be further improved by the bubbles contained in the swirling flow 99.

  The diameter of the bubbles generated by the first bubble generating device 12A or the second bubble generating device 12B can be measured by a method such as an image analysis method or a laser diffraction / scattering method. It is desirable that at least one of the first bubble generation device 12A and the second bubble generation device 12B can generate bubbles including at least fine bubbles having a diameter of 10 μm or less. Fine bubbles having a diameter of 10 μm or less can enter between the inner wall surface of the bathtub 10 and the dirt attached to the inner wall surface, and the adhesion of dirt to the inner wall surface can be weakened. For this reason, the cleaning effect can be further improved by supplying fine bubbles having a diameter of 10 μm or less. In particular, fine bubbles having a distribution peak in the range of 100 nm to 10 μm in diameter have a high effect of entering between the inner wall surface of the bathtub 10 and dirt attached to the inner wall surface, and the adhesion force of dirt to the inner wall surface is increased. The effect of weakening is high. By enabling at least one of the first bubble generation device 12A and the second bubble generation device 12B to generate fine bubbles having a distribution peak in a diameter range of 100 nm to 10 μm, the fine bubbles can be supplied to the bathtub 10, The cleaning effect can be further improved.

  At least one of the first bubble generation device 12A and the second bubble generation device 12B may be capable of generating bubbles having a distribution peak in a diameter range of 20 μm to 500 μm. Bubbles having a distribution peak in the range of 20 μm to 500 μm in diameter have a strong force to physically peel off dirt from the wall surface. In the washing process of the bath 10, fine bubbles having a distribution peak in the range of 100 nm to 10 μm in diameter and bubbles having a distribution peak in the range of 20 μm to 500 μm in diameter may be used in combination. By supplying fine bubbles having a distribution peak in the range of 100 nm to 10 μm in diameter first, the bubbles having a distribution peak in the range of 20 μm to 500 μm are supplied after weakening the adhesion to the wall surface of the dirt. Thus, the dirt may be physically separated from the wall surface. By doing so, a particularly high cleaning effect can be obtained. The same effect as described above can also be obtained when fine bubbles having a distribution peak in the range of 100 nm to 10 μm in diameter and bubbles having a distribution peak in the range of 20 μm to 500 μm are supplied simultaneously. Even if fine bubbles having a distribution peak in the range of 100 nm to 10 μm in diameter are generated by the first bubble generating device 12A, and bubbles having a distribution peak in the range of 20 μm to 500 μm in diameter are generated by the second bubble generating device 12B. Good. The bubble diameter can be controlled by adjusting the intake air amount with the flow rate adjusting valve 14A or 14B. When the intake amount is decreased, the bubble diameter is reduced, and when the intake amount is increased, the bubble diameter is increased. Even when only one bubble generating device is provided, fine bubbles having a distribution peak in a diameter range of 100 nm to 10 μm and a distribution in a diameter range of 20 μm to 500 μm can be obtained by adjusting the intake amount of the bubble generating device. You may produce | generate both the bubble which has a peak.

  If it is this Embodiment 3, in the washing | cleaning process of the bathtub 10, the swirl | vortex flow 99 containing a bubble can be formed by producing | generating a bubble by at least one of the 1st bubble generator 12A and the 2nd bubble generator 12B. When detergent is supplied into the bath 10, the detergent, that is, the surfactant, surrounds the bubble interface, so that the bubble is stabilized and the contact area between the detergent and the dirt surface increases. Thereby, high detergency is obtained. Moreover, the cleaning liquid containing the bubbles and the detergent flows from the suction port 3d of the bathtub adapter 3 because the bubbles are stabilized. Thereby, cleaning in the recirculation circulation path 4 can be performed at the same time. In the cleaning process of the third embodiment, after the cleaning water in the bathtub 10 is drained or simultaneously with draining, water is poured from the hot water storage tank 2 to the recirculation circulation path 4 or a water tap connected to the hot water supply channel 5 (illustrated). The rinse in the recirculation circulation path 4 may be performed by pouring water into the recirculation circulation path 4 from (omitted).

  FIG. 6 is a longitudinal sectional view showing an example of a bubble generating device in the third embodiment. A bubble generator 12 shown in FIG. 6 is an example of a bubble generator usable in the third embodiment. At least one of the first bubble generating device 12A and the second bubble generating device 12B may have a structure like the bubble generating device 12 shown in FIG.

  The bubble generating device 12 shown in FIG. 6 has a venturi mechanism that generates a lower pressure than the low speed portion by increasing the flow velocity by restricting the flow of fluid. The bubble generating device 12 includes an inlet portion 12a, a fixed wing 12b, a reduced diameter portion 12c, a gas introduction portion 12d, and an enlarged diameter portion 12e. The liquid such as washing water proceeds from the left side to the right side as shown by the arrow in the traveling direction P in FIG. The inner diameter of the inlet portion 12a is at least partially constant along the traveling direction P. A fixed wing 12b is installed inside the inlet 12a. The fixed blade 12b generates a swirling flow SF that swirls around the axis 12f of the flow path by applying a swirling force to the liquid flow at the inlet 12a. The reduced diameter portion 12c is formed coaxially on the downstream side of the inlet portion 12a. The inner diameter of the reduced diameter portion 12c is continuously reduced along the traveling direction P. The internal space of the reduced diameter portion 12c has a substantially conical shape. The reduced diameter portion 12c reduces the radius of the swirling flow SF generated by the fixed blade 12b, and speeds up the swirling flow SF. The gas introduction part 12d has a passage for introducing air from the outside in the radial direction to the downstream end of the reduced diameter part 12c, that is, the most reduced diameter part 12g. The air introduction path 13A or 13B in FIG. 5 is connected to the gas introduction part 12d. Air is sucked from the gas introduction part 12d by the negative pressure generated in the most contracted diameter part 12g. The enlarged diameter portion 12e is formed coaxially on the downstream side of the reduced diameter portion 12c. The inner diameter of the enlarged diameter portion 12e continuously increases along the traveling direction P. The internal space of the enlarged diameter portion 12e has a substantially conical shape. In the enlarged diameter part 12e, the air 90 introduced from the gas introduction part 12d is mixed with the swirling flow SF speeded up by the reduced diameter part 12c, thereby generating bubbles 90. With such a bubble generating device 12, the air introduced from the gas introduction part 12d is sheared by the swirling flow SF, whereby it is possible to generate bubbles 90 having a small diameter, that is, fine bubbles.

  The structure of the bubble generation device 12 described above is an example, and a bubble generation device having another structure may be used. In addition, the air bubble generating device such as the air bubble generating device 12 described above is not limited to a natural air intake type air bubble generating device, and a bubble generating device that forcibly sucks air with a pump or the like may be used.

Embodiment 4 FIG.
Next, the fourth embodiment will be described with reference to FIG. 7 to FIG. 9. The difference from the third embodiment will be mainly described, and the description of the same or corresponding parts will be simplified or Omitted. FIG. 7 is a configuration diagram illustrating a hot water supply system 1B including the cleaning device according to the fourth embodiment. A hot water supply system 1B according to the fourth embodiment shown in FIG. 7 further includes a bubble expanding means 15 in addition to the hot water supply system 1A according to the third embodiment.

  By operating the bubble expanding means 15, the diameter of the bubbles in the liquid in the bathtub 10 can be increased. The control device 6 may control the operation and stop of the bubble expanding means 15.

  The bubble expanding means 15 of the hot water supply system 1B includes an ultrasonic generator 15a installed at or near the inner wall of the bathtub 10. The ultrasonic generator 15a generates ultrasonic waves having a frequency of 16 kHz or more in the liquid in the bathtub 10. The ultrasonic waves generated by the ultrasonic generator 15 a are radiated toward the third inner wall 10 f of the opposing bathtub 10. When ultrasonic waves are radiated from the ultrasonic generator 15a, the diameter of the bubbles in the liquid in the bathtub 10 increases. In the illustrated configuration, the ultrasonic generator 15 a is installed on the main body 3 a of the bathtub adapter 3. Not only such a configuration, the ultrasonic generator 15 a may be installed at a position different from the bathtub adapter 3. The ultrasonic generator 15a generates an ultrasonic wave by the vibration of the vibrator. The ultrasonic generator 15a may be a single vibrator to which a voltage is applied.

  FIG. 8 is a configuration diagram illustrating a hot water supply system 1 </ b> C according to a modification of the fourth embodiment. A hot water supply system 1C of a modification of the fourth embodiment shown in FIG. 8 is different from the hot water supply system 1B of FIG. 7 in the configuration of the bubble expanding means 15. The bubble expanding means 15 of the hot water supply system 1C includes a discharge port 15b, a circulation path 15c, and a circulation pump 15d. The discharge port 15 b is installed on the inner wall portion of the bathtub 10. The discharge port 15 b allows a jet to flow into the liquid inside the bathtub 10. The circulation path 15c guides the liquid in the bathtub 10 to the discharge port 15b via the outside of the bathtub 10. The circulation pump 15d is connected in the middle of the circulation path 15c. When the circulation pump 15d is operated, the liquid in the bathtub 10 is sucked into the circulation path 15c, and the liquid that has passed through the circulation path 15c flows into the liquid inside the bathtub 10 from the discharge port 15b as a jet.

  The bubble expanding means 15 of the hot water supply system 1C of FIG. 8 operates so that the flow velocity of the jet at the discharge port 15b is 10 m / second or more. When the Reynolds number of the portion where the jet is discharged is 90,000 or more and the flow velocity at the discharge port 15b is at least 10 m / sec, the water flow is separated while forming a vortex at the corner of the discharge port 15b. Cavitation occurs and ultrasonic waves are generated. The ultrasonic wave expands the diameter of bubbles in the liquid in the bathtub 10.

  In the configuration shown in the figure, the discharge port 15 b of the bubble expanding means 15 is installed on the third inner wall 10 f of the bathtub 10 facing the bathtub adapter 3. The circulation path 15c and the circulation pump 15d of the bubble expanding means 15 are provided separately from the reheating circulation path 4 and the circulation pump 4d. The recirculation circulation path 4 and the circulation pump 4d are not limited to such a configuration, and the bubble expanding means 15 may also be used. That is, the jet flow of the bubble expanding means 15 may be generated using the recirculation circulation path 4 and the circulation pump 4d.

  FIG. 9 is a flowchart illustrating an example of a cleaning process of the bathtub 10 using the cleaning device of the fourth embodiment. Hereinafter, an example of the cleaning process in the present embodiment will be described with reference to FIG.

  Steps S1 'to S3' in FIG. 9 are the same as steps S1 to S3 in FIG. In step S <b> 4 ′, the swirling flow 99 is formed in the bathtub 10 by operating the circulation pump 4 d of the recirculation circulation path 4. At this time, the fine bubbles are generated by the first bubble generating device 12 </ b> A to supply the fine bubbles into the cleaning liquid in the bathtub 10.

  When fine bubbles are supplied into the cleaning liquid in the bathtub 10, the dissolved oxygen in the cleaning liquid in the bathtub 10 increases. The dissolved oxygen becomes supersaturated in about 5 minutes, for example. When the dissolved oxygen in the cleaning liquid in the bath 10 has sufficiently increased, the process proceeds from step S4 'to step S5'. In step S5 ', the circulation pump 4d in the recirculation circulation path 4 is temporarily stopped, and the cleaning liquid in the bathtub 10 is allowed to stand still. The time for the stationary state may be, for example, 5 minutes.

  The process proceeds from step S5 'to step S6'. In step S6 ', the bubble expanding means 15 is activated. As a result, it becomes as follows. The dissolved bubbles are gasified with the fine bubbles staying in the cleaning liquid in the bath 10 as the core, and the diameter of the staying bubbles becomes larger.

  The process proceeds from step S6 'to step S7'. In step S <b> 7 ′, the bubble expanding means 15 is stopped and the circulation pump 4 d of the recirculation circulation path 4 is operated again to form a swirling flow 99 in the bathtub 10. After the operation of the circulation pump 4d is continued for a predetermined time, the circulation pump 4d is stopped.

  The process proceeds from step S7 'to step S8'. Steps S8 'to S10' are the same as steps S5 to S7 in FIG.

  According to the fourth embodiment described above, the following effects can be obtained. In the washing process of the bathtub 10, the fine bubbles having a small diameter are first circulated in the bathtub 10, so that the fine bubbles enter between the dirt adhering to the wall surface and the wall surface, thereby allowing the dirt to float from the wall surface. . After that, the bubbles whose diameter has been expanded by the bubble expanding means 15 are circulated in the bathtub 10, so that the dirt that has floated from the wall surface and has weak adhesion can be reliably peeled off from the wall surface.

  In each embodiment described above, the hot water supply system provided with the cleaning device of the present invention has been described as an example. However, the cleaning device of the present invention may be provided separately from the hot water supply system. Moreover, the washing | cleaning apparatus of this invention is not limited to the apparatus which wash | cleans a bathtub, It is applicable also to the apparatus which wash | cleans the tank of another use. Tanks for other uses include, for example, water tanks for storing or raising aquatic organisms such as seafood, water tanks for water supply in condominiums, fire prevention water tanks, and the like.

1, 1A hot water supply system, 2 hot water storage tank, 3 bathtub adapter, 3a main body, 3b first discharge part, 3c second discharge part, 3d inlet, 3e, 3f discharge direction, 3g center line, 4 recirculation circulation path, 4a Reheating heat exchanger, 4b forward flow path, 4c return flow path, 4d circulation pump, 4e inlet, 4f outlet, 4g branching section, 5 hot water supply flow path, 6 control device, 7 terminal device, 8 housing, 10, 10A Bathtub, 10a first inner wall, 10b bottom surface, 10c second inner wall, 10d tangent, 10e stool, 10f third inner wall, 10g fourth inner wall, 10h fifth inner wall, 11 drain plug, 12 bubble generating device, 12A first bubble Generator, 12B second bubble generator, 12a inlet part, 12b fixed wing, 12c reduced diameter part, 12d air Introducing section, 12e expanded diameter section, 12f axis, 12g most contracted diameter section, 13A, 13B air introduction path, 14A, 14B flow control valve, 15 bubble expanding means, 15a ultrasonic generator, 15b discharge port, 15c circulation path , 15d circulation pump, 90 bubbles, 99 swirling flow

Claims (15)

A first discharge unit for discharging liquid into the liquid inside the tank;
A second discharge part for discharging the liquid into the liquid inside the tank;
With
It said first discharge portion and said second discharge portion, the inside of the tank is configured to so that to generate a swirling flow that flows in one direction along the entire circumference of the inner wall surface of the circumferential direction of the tank,
A first angle is an angle of the discharge direction of the first discharge section relative to the horizontal plane, Ri second angle are different angles der an angle of the discharge direction of the second ejection portion relative to the horizontal plane,
Further comprising a tank adapter in which the first discharge part, the second discharge part, and a suction port for sucking the liquid inside the tank are formed;
In plan view, the inlet port, relative to the center line of the body of the tank adapter, the side near Ru cleaning apparatus who are the first discharge portion and the discharge direction of the second discharge portion is directed. A nozzle-like first discharge section for discharging liquid into the liquid inside the tank;
A nozzle-like second discharge part that discharges liquid into the liquid inside the tank;
With
It said first discharge portion and said second discharge portion, the inside of the tank is configured to so that to generate a swirling flow that flows in one direction along the entire circumference of the inner wall surface of the circumferential direction of the tank,
A first angle is an angle of the discharge direction of the first discharge section relative to the horizontal plane, Ri second angle are different angles der an angle of the discharge direction of the second ejection portion relative to the horizontal plane,
The discharge direction of one of the first discharge part and the second discharge part is a direction that faces obliquely upward with respect to a horizontal plane, and the discharge direction of the other of the first discharge part and the second discharge part is cleaning machine direction der Ru facing obliquely downward with respect to the horizontal plane. The first discharge part and the second discharge part are arranged on a first inner wall of the tank,
Said first discharge portion and said second discharge portion, the adjacent first inner wall cleaning apparatus according to claim 1 or claim 2 for discharging liquid toward the second inner wall of the tank. The discharge direction of one of the first discharge part and the second discharge part is a direction that faces obliquely upward with respect to a horizontal plane, and the discharge direction of the other of the first discharge part and the second discharge part is The cleaning device according to claim 1 , wherein the cleaning device is in a direction facing obliquely downward relative to a horizontal plane. The first discharge part and the second discharge part are arranged on a first inner wall of the tank,
In plan view, the third angle, which is the angle of the discharge direction of the first discharge portion with respect to the tangent of the first inner wall, and the fourth angle, which is the angle of the discharge direction of the second discharge portion with respect to the tangent, are different. The cleaning apparatus according to any one of claims 1 to 4 , wherein   The cleaning apparatus according to any one of claims 1 to 5, further comprising a unit that periodically varies a discharge amount of the liquid from the first discharge unit and the second discharge unit. Equipped with a bubble generator,
The cleaning device according to any one of claims 1 to 6, wherein a liquid containing bubbles generated by the bubble generating device can be discharged from the first discharge portion and the second discharge portion.   The cleaning device according to claim 7, wherein the bubble generating device is capable of generating bubbles including at least fine bubbles having a diameter of 10 μm or less.   The cleaning device according to claim 7 or 8, further comprising bubble expanding means for expanding the diameter of bubbles in the liquid inside the tank.   The cleaning apparatus according to claim 9, wherein the bubble expanding means is operated after the bubbles generated by the bubble generating device are supplied into the tank.   The cleaning apparatus according to claim 9 or 10, wherein the bubble expanding means includes an ultrasonic generator that generates an ultrasonic wave having a frequency of 16 kHz or more.   The cleaning apparatus according to claim 11, wherein the ultrasonic generator generates ultrasonic waves by vibration of a vibrator. The bubble expanding means allows a jet to flow from the discharge port into the liquid inside the tank,
The cleaning device according to claim 9 or 10, wherein a flow velocity of the jet at the discharge port is 10 m / second or more. The tank is a bathtub,
The cleaning device according to any one of claims 1 to 13, wherein the first discharge portion and the second discharge portion can also be used as an outlet for hot water poured into the bathtub. The tank is a bathtub,
The cleaning device according to any one of claims 1 to 14, wherein the first discharge unit and the second discharge unit communicate with a circulation path that circulates bathtub water to a reheating heat exchanger.

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