JP2018143950A - Ultrasonic cleaning device and washing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ultrasonic cleaning device which can quickly clean an object to be cleaned.SOLUTION: An ultrasonic cleaning device 50 includes: a first ultrasonic generating body 110 and a second ultrasonic generating body 120 which generate ultrasonic waves; a housing 130 in which the first ultrasonic generating body 110 and the second ultrasonic generating body 120 are housed side by side so that their tip ends are exposed; and a water storage tank 300 for storing water in which the object to be cleaned, contacting with the tip ends of the first ultrasonic generating body 110 and second ultrasonic generating body 120 exposed from the housing 130, is immersed.SELECTED DRAWING: Figure 4

Description

  The present invention relates to an ultrasonic cleaning device and a washing machine including such an ultrasonic cleaning device.

  Patent Document 1 discloses an ultrasonic cleaning device including a cleaning device main body including an ultrasonic generation unit including a vibration horn, and a tray having a water reservoir for storing water and receiving an object to be cleaned. Yes.

  In the ultrasonic cleaning apparatus disclosed in Patent Document 1, the user sinks the object to be cleaned in the water stored in the water reservoir while the tip of the vibration horn is in contact with the dirty portion of the object to be cleaned. When the ultrasonic wave generating means is operated, the ultrasonic energy emitted from the vibration horn is transmitted to the object to be cleaned through water, and the dirt component adhering to the object to be cleaned is separated from the object to be cleaned.

JP 2004-216244 A

  The ultrasonic cleaning apparatus as described above is often used for cleaning a part of an object to be cleaned prior to washing in a washing machine. It is desirable that such pre-cleaning can be performed as quickly as possible. For this purpose, an ultrasonic cleaning apparatus having a configuration in which the cleaning action by ultrasonic energy covers as wide a range as possible of an object to be cleaned is desired.

  This invention is made | formed in view of this subject, and it aims at providing the ultrasonic cleaning apparatus which can wash | clean a to-be-cleaned object quickly, and a washing machine provided with this ultrasonic cleaning apparatus.

  The ultrasonic cleaning apparatus according to the first aspect of the present invention includes a first ultrasonic generator and a second ultrasonic generator that generate ultrasonic waves, and the first ultrasonic generator and the second ultrasonic generator. A housing in which the sound wave generators are housed side by side so that their tips are exposed, and the object to be cleaned that comes into contact with the tips of the first and second ultrasonic wave generators exposed from the housing A water storage tank in which water for immersing things is stored.

  According to the above configuration, the cleaning action can be exerted on a wide range of the object to be cleaned by the ultrasonic waves generated from both the first ultrasonic generator and the second ultrasonic generator. Can be cleaned quickly.

  In the ultrasonic cleaning apparatus according to this aspect, a configuration is adopted in which the height of the frequency of the ultrasonic wave generated by the first ultrasonic generator is different from that of the ultrasonic wave generated by the second ultrasonic generator. Can be.

  According to said structure, since it becomes possible to make the ultrasonic wave of the frequency suitable for each removal with respect to the stain | pollution | contamination from which a form differs, the cleaning effect of a to-be-cleaned object can be improved.

  In the case of the above configuration, a gap between the first region corresponding to the first ultrasonic generator and the second region corresponding to the second ultrasonic generator in the water storage tank is further provided. A configuration may be adopted in which a partition part for partitioning is further provided.

  With such a configuration, the first region and the second region are blocked by the partition wall, so that the ultrasonic wave generated by the first ultrasonic wave generator having a different frequency and the second ultrasonic wave generator are different from each other. This prevents the ultrasonic waves from interfering with each other through the water in the water storage tank, so that it is possible to prevent the cleaning power from being reduced due to the interference.

  In the ultrasonic cleaning apparatus according to this aspect, the first ultrasonic generator and the second ultrasonic generator are accommodated in the housing so as to be movable in the vertical direction, and the first ultrasonic generator is provided. And the first ultrasonic generator and the second ultrasonic wave so that when one of the second ultrasonic generators is raised, the other ultrasonic generator is lowered. A configuration may be adopted in which a coupling mechanism unit that couples the generator is further provided.

  According to the above configuration, in order to bring the ultrasonic wave generator into contact with one ultrasonic generator, even if the ultrasonic generator side portion of the object to be cleaned is lifted away from the water surface of the water tank, the other ultrasonic object of the object to be cleaned is The portion on the sound wave generator side is pushed down by the other ultrasonic wave generator, and the contact state with the water surface is maintained. As a result, water that has oozed out to the surface of the object to be cleaned on the other ultrasonic generator side is transmitted to one ultrasonic generator side, so that the water retention state of one ultrasonic generator side of the object to be cleaned is maintained. Is done. In this manner, the object to be cleaned can maintain a stable water-holding state during the cleaning by the operation of both ultrasonic generators, so that the cleaning performance of the object to be cleaned due to lack of moisture is prevented from being deteriorated.

  In the case of the above configuration, a first detection unit that detects that the first ultrasonic generator has risen and a second detector that detects that the second ultrasonic generator has risen. A detection unit; and a control unit that controls operations of the first ultrasonic generator and the second ultrasonic generator based on detection results of the first detection unit and the second detection unit. Furthermore, the structure which is provided may be taken.

  In the case of such a configuration, the user lifts the object to be cleaned and presses it against the first ultrasonic generator or the second ultrasonic generator, that is, positive cleaning of the object to be cleaned. Therefore, both of these ultrasonic wave generators can be automatically operated when the operation for the above is performed, and the convenience of the user is improved.

  ADVANTAGE OF THE INVENTION According to this invention, the ultrasonic cleaning apparatus which can wash | clean a to-be-cleaned object quickly, and a washing machine provided with this ultrasonic cleaning apparatus can be provided.

  The effects and significance of the present invention will become more apparent from the following description of embodiments. However, the following embodiment is merely an example when the present invention is implemented, and the present invention is not limited to what is described in the following embodiment.

FIG. 1 is a side sectional view of a fully automatic washing machine according to an embodiment. FIG. 2 is a perspective view of the periphery of the ultrasonic cleaning apparatus in a state where the ultrasonic generation unit is mounted according to the embodiment. FIG. 3 is a perspective view of the periphery of the ultrasonic cleaning apparatus according to the embodiment with the ultrasonic generation unit removed. FIG. 4 is a front cross-sectional view of the periphery of the ultrasonic cleaning apparatus cut at the positions of the first ultrasonic generator and the second ultrasonic generator of the ultrasonic generation unit according to the embodiment. FIG. 5 is a side cross-sectional view of the periphery of the ultrasonic cleaning apparatus cut at a position between the first ultrasonic generator and the second ultrasonic generator of the ultrasonic generation unit according to the embodiment. FIG. 6A is a perspective view of the first ultrasonic generator according to the embodiment, and FIG. 6B is a perspective view of the second ultrasonic generator according to the present embodiment. . FIG. 7 is a block diagram showing a configuration of a fully automatic washing machine according to the embodiment. FIG. 8 is a flowchart showing the control operation of the partial cleaning operation according to the embodiment. FIGS. 9A to 9C are views for explaining the removal of dirt on the object to be cleaned by the ultrasonic cleaning apparatus according to the embodiment. FIG. 10 is a perspective view of an ultrasonic wave generation unit according to the first modification. FIG. 11A is a front cross-sectional view of an ultrasonic wave generation unit cut at the position of two ultrasonic wave generators according to Modification Example 1, and FIG. 11B is an ultrasonic wave according to Modification Example 1. It is a perspective view of a generating body. FIG. 12 is a block diagram illustrating a configuration of a fully automatic washing machine according to the first modification. FIG. 13 is a flowchart showing the control operation of the partial cleaning operation according to the first modification. FIG. 14A is a diagram showing a state of an ultrasonic wave generation unit and an object to be cleaned before two ultrasonic wave generators according to Modification Example 1 are operated, and FIG. It is a figure which shows the state of an ultrasonic wave generation unit and a to-be-cleaned object when the sound wave generation body is act | operating.

  Hereinafter, an ultrasonic cleaning apparatus and a washing machine according to an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a side sectional view of a fully automatic washing machine 1 according to the present embodiment.

  Fully automatic washing machine 1 is provided with case 10 which constitutes the appearance. The casing 10 includes a rectangular cylindrical trunk portion 11 having upper and lower surfaces open, an upper surface plate 12 that covers the upper surface of the trunk portion 11, and a leg base 13 that supports the trunk portion 11. The top plate 12 has a laundry inlet 14 formed therein. The insertion port 14 is covered with an openable / closable upper lid 15.

  In the housing 10, the outer tub 20 whose upper surface is open is elastically suspended and supported by four suspension rods 21 having a vibration isolator. In the outer tub 20, a laundry dewatering tub 22 having an upper surface opened is arranged. The laundry dewatering tub 22 rotates about a rotation axis extending in the vertical direction. A large number of dewatering holes 22 a are formed on the inner peripheral surface of the laundry dewatering tank 22 over the entire circumference. A balance ring 23 is provided in the upper part of the laundry dewatering tub 22. A pulsator 24 is disposed at the bottom of the laundry dewatering tank 22. A plurality of blades 24 a are provided radially on the surface of the pulsator 24. The outer tub 20 and the washing / dehydrating tub 22 constitute the washing tub of the present invention.

  A driving unit 30 that generates torque for driving the washing / dehydrating tub 22 and the pulsator 24 is disposed on the outer bottom of the outer tub 20. The drive unit 30 includes a drive motor 31 and a transmission mechanism unit 32. The transmission mechanism 32 has a clutch mechanism 32a, and in the washing process and the rinsing process, the torque of the drive motor 31 is transmitted only to the pulsator 24 by the switching operation by the clutch mechanism 32a, and only the pulsator 24 is rotated. In the process, the torque of the drive motor 31 is transmitted to the pulsator 24 and the washing / dehydrating tub 22 to rotate the pulsator 24 and the washing / dehydrating tub 22 integrally.

  A drain port 20 a is formed in the outer bottom of the outer tub 20. A drain valve 40 is provided at the drain port 20a. The drain valve 40 is connected to the drain hose 41. When the drain valve 40 is opened, the water stored in the washing and dewatering tub 22 and the outer tub 20 is discharged outside the machine through the drain hose 41.

  An ultrasonic cleaning device 50 is provided in front of the top plate 12. The ultrasonic cleaning device 50 mainly removes stains partially adhered to the object to be cleaned, such as sebum stains adhering to shirt sleeves and collars and oil stains adhering to work clothes. Used to remove prior to washing in.

  A water supply unit 60 for supplying tap water to the inside of the washing and dewatering tub 22 and the ultrasonic cleaning device 50 is disposed at the rear part of the top plate 12. The water supply unit 60 has a water supply valve 61. The water supply valve 61 includes a first valve 62 and a second valve 63 and is connected to a water tap. When the first valve 62 is opened, tap water from the tap is supplied into the washing and dewatering tank 22 through the water supply path 64. When the second valve 63 is opened, tap water is supplied to a water storage tank (described later) of the ultrasonic cleaning device 50. In addition, since the water supply unit 60 is a water supply part which supplies water to the water storage tank of the ultrasonic cleaning device 50, the water supply unit 60 is included in a part of the configuration of the ultrasonic cleaning device 50.

  Next, the configuration of the ultrasonic cleaning apparatus 50 will be described in detail.

  FIG. 2 is a perspective view of the periphery of the ultrasonic cleaning apparatus 50 with the ultrasonic generation unit 100 attached thereto according to the present embodiment. FIG. 3 is a perspective view of the periphery of the ultrasonic cleaning apparatus 50 in a state where the ultrasonic generation unit 100 is removed according to the present embodiment. FIG. 4 is a front sectional view of the periphery of the ultrasonic cleaning apparatus 50 cut at the position of the first ultrasonic generator 110 and the second ultrasonic generator 120 of the ultrasonic generation unit 100 according to the present embodiment. . FIG. 5 is a side sectional view of the periphery of the ultrasonic cleaning apparatus 50 cut at a position between the first ultrasonic generator 110 and the second ultrasonic generator 120 of the ultrasonic generation unit 100 according to the present embodiment. FIG. 6A is a perspective view of the first ultrasonic generator 110 according to the present embodiment, and FIG. 6B is a perspective view of the second ultrasonic generator 120 according to the present embodiment. FIG.

  As shown in FIG. 2, the front frame 16 that forms the front side of the inlet 14 of the upper surface plate 12 includes an upper surface 16a having a concave curved shape with a lower central portion, and a rear surface 16b that rises vertically from the rear end of the upper surface 16a. And have.

  The ultrasonic cleaning device 50 is provided at the center of the front frame 16. When the ultrasonic cleaning device 50 is not used, a cover (not shown) is attached to the front frame 16 from above, and the ultrasonic cleaning device 50 is covered by this cover.

  As shown in FIGS. 2 to 5, the ultrasonic cleaning device 50 includes an ultrasonic generation unit 100, an installation table 200, a water storage tank 300, and a drainage tank 400.

  The installation base 200 is integrally formed with the front frame 16 so as to be in contact with the rear surface 16b at the center of the upper surface 16a of the front frame 16. The installation base 200 has a predetermined height with respect to the water storage tank 300. The top surface of the installation table 200 is an installation surface 201 on which the ultrasonic generation unit 100 is installed. Two openings 17a are formed on the rear surface 16b of the front frame 16 above the installation surface 201, and a mounting hole 17b is formed between these openings 17a.

  The water storage tank 300 is formed on the upper surface 16a of the front frame 16 in front of the central portion. The water tank 300 has a horizontally long oval shape. In the water storage tank 300, a partition wall 301 extending in the front-rear direction is formed at the center in the left-right direction. The interior of the water storage tank 300 is divided by a partition wall 301 into a first area 302 on the left side and a second area 303 on the right side. The partition wall 301 is connected to the inner wall surface on the front side of the water storage tank 300, but is separated from the inner wall surface on the rear side. The tank 300 is connected at the center rear part. The partition wall 301 corresponds to the partition portion of the present invention. The first region 302 and the second region 303 correspond to the first region and the second region of the present invention, respectively.

  A water supply port 304 is formed on the bottom surface of the water storage tank 300 behind the partition wall 301. A water supply pipe 305 connected to the water supply port 304 is formed on the outer bottom surface of the water storage tank 300. A water supply pipe 306 extending from the second valve 63 is connected to the water supply pipe 305.

  The drain tank 400 is formed around the water storage tank 300 in the center of the upper surface 16 a of the front frame 16. On the bottom surface of the drainage tank 400, a drainage port 401 is formed at a central position behind the water storage tank 300. A drain pipe 402 connected to the drain port 401 is formed on the outer bottom surface of the drain tank 400. A drain pipe 403 connected to the outer tub 20 is connected to the drain pipe 402. Note that the drain pipe 403 may be connected to the drain hose 41.

  The ultrasonic generation unit 100 includes two ultrasonic generators that generate ultrasonic waves, that is, a first ultrasonic generator 110 and a second ultrasonic generator 120, and a housing 130 that accommodates the ultrasonic generators 110 and 120. Including. The first ultrasonic generator 110 and the second ultrasonic generator 120 correspond to the first ultrasonic generator and the second ultrasonic generator of the present invention, respectively.

  As shown in FIG. 6A, the first ultrasonic generator 110 includes a first ultrasonic transducer 111 and a first vibration horn 112 coupled to the first ultrasonic transducer 111. The first vibrating horn 112 is formed of a conductive metal material and has a shape that gradually decreases toward the tip side. The shape of the front end surface 112a of the first vibrating horn 112 is an elongated rectangular shape. A substantially rectangular first flange portion 113 is formed on the upper end portion of the first vibration horn 112.

  As shown in FIG. 6B, the configuration of the second ultrasonic generator 120 is substantially the same as the configuration of the first ultrasonic generator 110. That is, the second ultrasonic generator 120 includes a second ultrasonic transducer 121, a second vibration horn 122, and a second flange portion 123. However, the length of the second vibration horn 122 is shorter than the length of the first vibration horn 112.

  The first ultrasonic generator 110 and the second ultrasonic generator 120 are different in the height of the frequency of the ultrasonic waves generated by each. The frequency of the ultrasonic waves generated by the first ultrasonic generator 110 is relatively low, for example, about 28 kHz to 38 kHz. On the other hand, the frequency of the ultrasonic wave generated by the second ultrasonic wave generator 120 is relatively high, for example, about 50 kHz to 60 kHz. Note that the difference in length between the first vibration horn 112 and the second vibration horn 122 is due to the difference in the frequency of the ultrasonic waves.

  The housing 130 is made of a resin material, is slightly longer in the front-rear direction, and has an arm shape such that the tip portion 130a protrudes downward. The front end portion 130a of the housing 130 is formed to be tapered, and an opening 131 is formed on the front end surface.

  The housing 130 is formed by coupling a lower member 140 whose upper surface is opened and an upper member 150 whose lower surface is opened. The lower member 140 and the upper member 150 are provided with a lower mounting boss 141 and an upper mounting boss 151 for connecting them. These lower mounting boss 141 and upper mounting boss 151 are fixed with a fixing screw (not shown).

  Inside the housing 130, a first installation portion 142 and a second installation portion 143 each having a substantially rectangular tube shape extending upward from the opening 131 are provided on the lower member 140 so as to be arranged side by side. The height of the first installation part 142 is higher than the height of the second installation part 143. The first ultrasonic generator 110 is installed on the first installation unit 142. At this time, the first vibration horn 112 is housed inside the first installation portion 142, and the tip of the first vibration horn 112 is slightly exposed from the opening 131. Similarly, the second ultrasonic generator 120 is installed on the second installation unit 143. At this time, the second vibration horn 122 is housed inside the second installation portion 143, and the tip end portion of the second vibration horn 122 is slightly exposed from the opening 131. The heights of the first installation portion 142 and the second installation portion 143 are set so that the exposure amount of the first vibration horn 112 and the exposure amount of the second vibration horn 122 are the same.

  The first ultrasonic generator 110 and the second ultrasonic generator 120 installed in the first installation unit 142 and the second installation unit 143, respectively, are pressed from above by the pressing member 160. The pressing member 160 is fixed to the lower member 140 by a fixing screw (not shown) or the like, and thereby the first ultrasonic generator 110 and the second ultrasonic generator 120 are fixed in the housing 130.

  A first mark portion 132 having the same shape as that of the front end surface 112a is formed on the top surface of the housing 130 at the same position as the front end surface 112a of the first vibration horn 112 when viewed from above, and the second mark as viewed from above. A second mark 133 having the same shape as the tip surface 122a is formed at the same position as the tip surface 122a of the vibration horn 122. The user can confirm the position of the front end surface 112 a of the first vibration horn 112 and the position of the front end surface 122 a of the second vibration horn 122 by looking at the first mark portion 132 and the second mark portion 133.

  Further, a circular display window 134 is formed on the top surface of the housing 130. The upper member 150 is formed with a cylindrical lamp housing portion 152 connected to the display window 134. The lamp housing portion 152 accommodates a notification lamp 170 as a notification portion from below. The notification lamp 170 is mounted on the base 171 and is fixed to the lower end of the lamp housing portion 152 via the base 171. The notification lamp 170 is, for example, an LED lamp, and faces the outside from the display window 134.

  First mounting bosses 144 are formed on the left and right sides of the lower member 140 on the outside of the rear end portion of the housing 130. Further, a second mounting boss 145 is formed inside the rear end portion of the housing 130 at a position between the two first mounting bosses 144.

  The front frame 16 is formed with attachment portions 18 above the left and right openings 17a. When the rear end portion of the housing 130 is placed on the installation surface 201 of the installation table 200, the first attachment boss 144 and the attachment portion 18 overlap in the vertical direction, and the attachment hole 17 b of the front frame 16 and the second attachment boss 145. Are aligned with the screw holes 145a. The first mounting boss 144 and the mounting portion 18 are fixed by the fixing screw 161, and the fixing screw 162 passed through the mounting hole 17b is stopped by the second mounting boss 145, so that the housing 130 is attached to the water tank 300. On the other hand, it is fixed on the installation table 200 so as to be at a predetermined height position.

  In a state where the ultrasonic generation unit 100 is installed on the installation table 200, the first ultrasonic generator 110 is positioned immediately above the first region 302 of the water tank 300, and the second ultrasonic generator 120 is the water tank 300. The second region 303 is located immediately above. In addition, a predetermined gap is formed between the front end surface 112 a of the first vibration horn 112 and the front end surface 122 a of the second vibration horn 122 and the upper surface of the water storage tank 300. This predetermined gap is set to a gap slightly larger than the thickness in consideration of the thickness of the collar or cuff of a shirt or similar shirt that is considered to be frequently used for cleaning by the ultrasonic cleaning device 50. For example, the predetermined gap can be set to about 3 mm. When an object to be cleaned is set between the ultrasonic generating unit 100 and the water storage tank 300, the back surface of the object to be cleaned is immersed in the water of the water storage tank 300, and the water sucked up from the back surface and oozed out to the surface A thin layer of water is formed on the surface of the object to be cleaned. And the front end surface 112a of the 1st vibration horn 112 and the front end surface 122a of the 2nd vibration horn 122 can be made to contact the water layer, and the stable washing | cleaning performance by the ultrasonic generation unit 100 can be exhibited.

  FIG. 7 is a block diagram showing a configuration of the fully automatic washing machine 1 according to the present embodiment.

  The fully automatic washing machine 1 includes a control unit 70 and an operation unit 80 in addition to the configuration described above. The control unit 70 includes a control unit 71, a storage unit 72, a motor drive unit 73, a clutch drive unit 74, a water supply drive unit 75, a drainage drive unit 76, a vibrator drive unit 77, and a lamp drive unit 78.

  The operation unit 80 includes a power button 81 for turning on and off the fully automatic washing machine 1. The operation unit 80 includes a start button 82 and a course selection button 83 as operation buttons related to the washing operation. The start button 82 is a button for starting a washing operation, and the course selection button 83 is a button for selecting an arbitrary driving course from a plurality of driving courses related to the washing operation.

  Further, the operation unit 80 includes a simultaneous cleaning button 84, a low frequency cleaning button 85, a high frequency cleaning button 86, and a stop button 87 as operation buttons related to the partial cleaning operation by the ultrasonic cleaning device 50. The simultaneous cleaning button 84 is a button for starting a partial cleaning operation by the operations of both the first ultrasonic generator 110 and the second ultrasonic generator 120. The low frequency cleaning button 85 is a button for starting a partial cleaning operation by the operation of only the first ultrasonic generator 110, and the high frequency cleaning button 86 is a partial cleaning operation by the operation of only the second ultrasonic generator 120. It is a button for starting. The stop button 87 is a button for stopping the partial cleaning operation.

  The operation unit 80 is operated by the user from various operation buttons such as a power button 81, a start button 82, a course selection button 83, a simultaneous cleaning button 84, a low frequency cleaning button 85, a high frequency cleaning button 86, and a stop button 87. An input signal corresponding to the operated button is output to the control unit 71. In addition, the operation part 80 can be provided in the front part of the upper cover 15, for example. Alternatively, an area where the operation unit 80 is provided on the front frame 16 may be secured.

  The motor drive unit 73 drives the drive motor 31 in accordance with a control signal from the control unit 71. The clutch drive unit 74 drives the clutch mechanism 32 a according to the control signal output from the control unit 71.

  The water supply drive unit 75 drives the water supply valve 61, that is, the first valve 62 and the second valve 63 in accordance with a control signal from the control unit 71. The drainage drive unit 76 drives the drainage valve 40 in accordance with a control signal from the control unit 71.

  The transducer driving unit 77 controls the first ultrasonic transducer 111 of the first ultrasonic generator 110 and the second ultrasonic transducer 121 of the second ultrasonic generator 120 according to the control signal output from the control unit 71. To drive. The lamp driving unit 78 drives the notification lamp 170 according to the control signal output from the control unit 71.

  The storage unit 72 includes an EEPROM, a RAM, and the like. The storage unit 72 stores a program for executing a washing operation of various operation courses and a partial cleaning operation by the ultrasonic cleaning device 50. Further, the storage unit 72 stores various parameters and various control flags used for executing these programs.

  Based on each signal from the operation unit 80 or the like, the control unit 71 follows a program stored in the storage unit 72 to drive the motor drive unit 73, the clutch drive unit 74, the water supply drive unit 75, the drainage drive unit 76, and the vibrator drive. The unit 77, the lamp driving unit 78, and the like are controlled.

  In the fully automatic washing machine 1, washing operations of various operation courses are performed. In the washing operation, a washing process, an intermediate dehydration process, a rinsing process, and a final dehydration process are sequentially performed.

  In the washing step and the rinsing step, the pulsator 24 rotates rightward and leftward with water stored in the washing / dehydrating tub 22. As the pulsator 24 rotates, a water flow is generated in the laundry dewatering tub 22. In the washing step, the laundry is washed with the generated water flow and the detergent contained in the water. In the rinsing process, the laundry is rinsed by the generated water flow.

  In the intermediate dehydration process and the final dehydration process, the laundry dewatering tank 22 and the pulsator 24 rotate as a unit at a high speed. The laundry is dehydrated by the action of centrifugal force generated in the laundry dewatering tub 22.

  Further, in the fully automatic washing machine 1, a partial cleaning operation by the ultrasonic cleaning device 50 is performed.

  FIG. 8 is a flowchart showing the control operation of the partial cleaning operation according to the present embodiment.

  The user uses the ultrasonic cleaning apparatus 50 prior to washing as necessary, for example, when the object to be cleaned, such as a shirt, is washed, including partially stubborn dirt. Perform partial cleaning of the object to be cleaned. At this time, a detergent may be applied in advance to the dirty portion of the object to be cleaned.

  Referring to FIG. 8, the control unit 71 monitors whether any of the simultaneous cleaning button 84, the low frequency cleaning button 85, or the high frequency cleaning button 86 has been pressed (S101). The user places the dirt on the object to be cleaned, for example, the collar portion of the shirt, on the water tank 300, that is, the first vibration horn 112 and the second ultrasonic wave of the water tank 300 and the first ultrasonic generator 110. Set between the generator 120 and the second vibrating horn 122, and press the desired cleaning button.

  When any cleaning button is pressed (S101: YES), the controller 71 opens the second valve 63 (S102). Thereby, water flows into the water storage tank 300 from the water supply port 304. The controller 71 monitors whether or not a predetermined time has elapsed since the start of water supply (S103). The predetermined time may be a time required for water to overflow from the water tank 300. The object to be cleaned is immersed in the water stored in the water storage tank 300, and the water that has permeated into the object to be cleaned oozes out to the surface. A thin water layer is formed on the surface of the object to be cleaned, and the first vibration horn 112 and the second vibration horn 122 are in contact with this water layer.

  The water overflowing from the water storage tank 300 is received by the drainage tank 400. The water in the drain tank 400 is discharged from the drain port 401 and sent into the outer tank 20 through the drain pipe 403.

  When the predetermined time has elapsed (S103: YES), the controller 71 operates the first ultrasonic generator 110 and the second ultrasonic generator 120 in accordance with the pressed cleaning button. That is, when the simultaneous cleaning button 84 is pressed (S104: simultaneous), the control unit 71 energizes the first ultrasonic transducer 111 to operate the first ultrasonic generator 110 and the second ultrasonic wave. The vibrator 121 is energized to activate the second ultrasonic generator 120 (S105). On the other hand, when the low frequency washing button 85 is pressed (S104: low frequency), the control unit 71 energizes only the first ultrasonic transducer 111 and operates only the first ultrasonic generator 110 (S106). ). When the high frequency cleaning button 86 is pressed (S104: high frequency), the control unit 71 energizes only the second ultrasonic transducer 121 and activates only the second ultrasonic generator 120 (S107). Then, the control unit 71 turns on the notification lamp 170 (S108). By turning on the notification lamp 170, the user can know that the object to be cleaned is being cleaned by the ultrasonic wave generation unit 100.

  FIGS. 9A to 9C are views for explaining the removal of dirt on the object to be cleaned by the ultrasonic cleaning apparatus 50 according to the present embodiment. Here, the removal of dirt on the object to be cleaned by the operation of the first ultrasonic generator 110 will be described. However, the same applies to the removal of dirt on the object to be cleaned by the operation of the second ultrasonic generator 120. .

  When the first ultrasonic generator 110 is activated, an ultrasonic wave is generated from the tip of the first vibration horn 112, and the ultrasonic vibration is transmitted to the water inside the object to be cleaned through the water around the first vibration horn 112. At this time, since there is not too much water around the first vibration horn 112, the ultrasonic vibration is effectively propagated.

  As shown in FIG. 9 (a), in the object to be cleaned, pressure reduction and pressurization are alternately generated by the action of ultrasonic vibration, and a vacuum cavity is generated in a portion where the pressure is low. That is, a large number of cavities exist in the dirt portion of the object to be cleaned. Next, as shown in FIG. 9B, when the pressure in the cavity portion increases and the cavity is crushed by this pressure, a shock wave is generated in the dirty portion of the object to be cleaned. The shock wave separates dirt from the object to be cleaned. As shown in FIG. 9 (c), the ultrasonic vibration from the first vibrating horn 112 generates a water flow from the inside of the object to be cleaned into the water tank 300, and the dirt separated from the object to be cleaned by this water flow. Is discharged into the water tank 300. In the water storage tank 300, convection is generated by the water flow described above, so that dirt is easily pulled away from the object to be cleaned. In this way, dirt is removed from the object to be cleaned.

  Here, since the ultrasonic wave generated by the first ultrasonic generator 110 has a relatively low frequency, that is, the wavelength is relatively long, when such an ultrasonic wave acts, The cavities generated in the above are likely to be large, and the impact force when these cavities are ruptured is likely to be large. For this reason, when the 1st ultrasonic generator 110 act | operates, a big cleaning power is easy to be acquired and big dirts, such as oil dirt, are easy to remove. On the other hand, since the ultrasonic wave generated by the second ultrasonic wave generator 120 has a relatively high frequency, that is, a wavelength is relatively short, when such an ultrasonic wave acts, many ultrasonic waves are generated inside the object to be cleaned. These small cavities are easily generated, and when these cavities are ruptured, a large number of fine impact forces are easily obtained. For this reason, when the second ultrasonic generator 120 is operated, a fine impact force tends to act on fine dirt due to fine particles and the like, and the fine dirt is likely to be removed.

  In normal cases, the simultaneous cleaning button 84 is often pressed by the user. When the simultaneous cleaning button 84 is pressed and both the first ultrasonic generator 110 and the second ultrasonic generator 120 operate, the ultrasonic waves generated from them simultaneously spread the wide range of objects to be cleaned. A cleaning action is exerted, and both large dirt and fine dirt are easily removed well.

  On the other hand, the low-frequency cleaning button 85 can be pressed when the object to be cleaned is mainly composed of large dirt and there are few dirt parts. In this case, only the first ultrasonic generator 110 operates, and the large dirt adhering to the object to be cleaned is satisfactorily removed. Further, when the object to be cleaned is mainly fine dirt and there are few dirt parts, the high frequency washing button 86 can be pressed. In this case, only the second ultrasonic generator 120 operates, and fine dirt adhering to the object to be cleaned is satisfactorily removed.

  When the second ultrasonic generator 120 is operated, the wavelength of the generated ultrasonic wave is short, so that the generation cycle of the cavity, that is, the cavitation cycle is shortened, and the movement of water molecules contained in the object to be cleaned is reduced. Since it becomes intense, the water flow from the inside of the object to be cleaned into the water storage tank 300 tends to become strong. Thereby, the dirt separated from the object to be cleaned is easily discharged into the water storage tank 300, and the reattachment of the dirt to the object to be cleaned is less likely to occur.

  Further, in the water tank 300, the ultrasonic vibration generated by the first ultrasonic generator 110 is propagated to the water in the first region 302 located directly below the first ultrasonic generator 110, and the second ultrasonic generator. Ultrasonic vibration by the second ultrasonic generator 120 propagates in the water in the second region 303 located directly below 120. However, since the reservoir 300 is sealed between the first region 302 and the second region 303 by the partition wall 301, the ultrasonic vibration and the second ultrasonic wave generated by the first ultrasonic generator 110 having different frequencies from each other. The ultrasonic vibration generated by the generator 120 is prevented from interfering with each other through the water in the water storage tank 300.

  The user moves the object to be cleaned to the left and right along the upper surface 16a of the front frame 16, and sequentially brings the dirt portion of the object to be cleaned into contact with the first ultrasonic generator 110 and the second ultrasonic generator 120. , Remove the dirt on the object to be cleaned. Thus, the user presses the stop button 87 when the object to be cleaned is finished.

  When the stop button 87 is pressed (S109: YES), the control unit 71 stops both of the first ultrasonic generator 110 and the second ultrasonic generator 120 if both are in operation, and either one is operated. If is in operation, one of them is stopped (S110). Further, the control unit 71 turns off the notification lamp 170 (S110). Further, the control unit 71 closes the second valve 63 and ends the water supply to the water storage tank 300 (S111). Thus, the partial cleaning operation ends.

<Effects of the present embodiment>
As described above, according to the present embodiment, the ultrasonic wave generated from both the first ultrasonic generator 110 and the second ultrasonic generator 120 can exert a cleaning action on a wide range of objects to be cleaned. It becomes possible to quickly clean the object to be cleaned.

  Further, according to the present embodiment, it is possible to generate a relatively low frequency ultrasonic wave from the first ultrasonic wave generator 110 and to generate a relatively high frequency from the second ultrasonic wave generator 120. That is, since it becomes possible to act on the large dirt and the fine dirt which are different in form from each other, the ultrasonic wave having a frequency suitable for each removal can be applied, so that the cleaning effect of the object to be cleaned can be enhanced.

  Further, according to the present embodiment, the partition wall 301 provided in the water storage tank 300 allows the ultrasonic vibration generated by the first ultrasonic generator 110 and the ultrasonic vibration generated by the second ultrasonic generator 120 to be different from each other. Are prevented from interfering with each other through the water in the water storage tank 300, and the cleaning power is prevented from being reduced by the interference.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications other than those described above can be made to the embodiments of the present invention. .

<Modification 1>
FIG. 10 is a perspective view of the ultrasonic wave generation unit 500 according to the first modification. FIG. 11A is a front cross-sectional view of the ultrasonic wave generation unit 500 cut at the position of the two ultrasonic wave generators 510 according to the modification example 1, and FIG. 2 is a perspective view of an ultrasonic generator 510. FIG.

  In the ultrasonic cleaning apparatus 50 according to the above-described embodiment, the ultrasonic generation unit 500 according to this modification can be employed instead of the ultrasonic generation unit 100.

  The ultrasonic generation unit 500 includes two ultrasonic generators 510 that generate ultrasonic waves, and a housing 520 that accommodates the ultrasonic generators 510. Hereinafter, when distinguishing the two ultrasonic generators 510, the left ultrasonic generator 510 is referred to as a first ultrasonic generator 510a, and the right ultrasonic generator 510 is referred to as a second ultrasonic generator 510b. . The first ultrasonic generator 510a and the second ultrasonic generator 510b correspond to the first ultrasonic generator and the second ultrasonic generator of the present invention, respectively.

  The ultrasonic generator 510 includes an ultrasonic vibrator 511 and a vibration horn 512 coupled to the ultrasonic vibrator 511. The vibration horn 512 is formed of a conductive metal material and has a shape that gradually decreases toward the tip side. The shape of the tip surface 512a of the vibration horn 512 is an elongated rectangular shape. A substantially rectangular flange portion 513 is formed at the upper end portion of the vibration horn 512. A connection tab 514 having a connection hole 514 a is formed at the upper end of the ultrasonic transducer 511.

  The ultrasonic generator 510 of this modification may generate ultrasonic waves having the same frequency as the first ultrasonic generator 110 of the above embodiment, or the second ultrasonic wave of the above embodiment. An ultrasonic wave having the same frequency as that of the generator 120 may be generated, or an ultrasonic wave having a frequency different from these may be generated.

  The housing 520 is formed of a resin material and has a substantially rectangular parallelepiped box shape that is long in the front-rear direction. An opening 521 is formed on the lower surface of the front portion of the housing 520. The housing 520 is formed by joining a lower member 530 whose upper surface is opened and an upper member 540 whose lower surface is opened.

  Inside the housing 520, a substantially square cylindrical first installation portion 531 and second installation portion 532 extending upward from the opening 521 are provided on the lower member 530 so as to be arranged side by side. A first support spring 551 is arranged inside the first installation part 531, and a second support spring 552 is arranged inside the second installation part 532. The first support spring 551 is received by a first receiving portion 531 a provided in the first installation portion 531, and the second support spring 552 is received by a second reception portion 532 a provided in the second installation portion 532.

  The first ultrasonic generator 510 a is installed on the first installation unit 531. At this time, the first ultrasonic generator 510a is supported by the first support spring 551 so as to float by a predetermined amount from the upper end of the first installation portion 531. Similarly, the second ultrasonic generator 510 b is installed on the second installation unit 532. At this time, the second ultrasonic generator 510 b is supported by the second support spring 552 so as to float by a predetermined amount from the upper end portion of the second installation portion 532.

  The vibration horn 512 of the first ultrasonic generator 510a is housed inside the first installation portion 531 and the tip of the vibration horn 512 is slightly exposed from the opening 521. Similarly, the vibration horn 512 of the second ultrasonic generator 510 b is housed inside the second installation portion 532, and the tip of the vibration horn 512 is slightly exposed from the opening 521. The exposure amounts of the two vibrating horns 512 are the same.

  The first ultrasonic generator 510 a and the second ultrasonic generator 510 b installed in the first installation unit 531 and the second installation unit 532 are connected by a connection mechanism unit 560. The connection mechanism portion 560 includes an elongated plate-like connection lever 561 extending in the left-right direction, and a support portion 562 that supports the center of the connection lever 561. A connecting shaft 563 that protrudes forward is formed at both ends of the connecting lever 561. By inserting a connecting hole 514a into the connecting shaft 563, the connecting tab 514 of the first ultrasonic generator 510a is connected. The left tab of the lever 561 is rotatably connected, and the connection tab 514 of the second ultrasonic generator 510b is rotatably connected to the right end of the connection lever 561. The support portion 562 is provided with a support shaft 564 protruding forward, and this support shaft 564 is inserted into a shaft hole 565 formed in the center of the connecting lever 561. As a result, the connecting lever 561 can swing up and down about the support shaft 564.

  The first ultrasonic generator 510a and the second ultrasonic generator 510b are movable in the vertical direction in the housing 520, and the ultrasonic generators 510a and 510b are connected by the connecting mechanism portion 560, thereby When the first ultrasonic generator 510a is raised, the second ultrasonic generator 510b is lowered against the elastic force of the second support spring 552, and when the second ultrasonic generator 510b is raised, the first ultrasonic generator 510a is The first support spring 551 descends against the elastic force.

  In the upper member 540 of the housing 520, a first detection switch 571 is disposed above the first ultrasonic generator 510a, and a second detection switch 572 is disposed above the second ultrasonic generator 510b. The first detection switch 571 and the second detection switch 572 are, for example, micro switches. The first detection switch 571 and the second detection switch 572 correspond to the first detection unit and the second detection unit of the present invention, respectively. When the first ultrasonic generator 510a is raised by a predetermined amount, the first detection switch 571 is turned on, and when the second ultrasonic generator 510b is raised by a predetermined amount, the second detection switch 572 is turned on.

  On the top surface of the housing 520, similarly to the housing 130 of the above-described embodiment, a mark portion 522 indicating the position of the front end surface 512a of the two vibration horns 512 is formed. In addition, a circular display window 523 is formed on the top surface of the housing 520 in the same manner as the housing 130 of the above embodiment, and a notification lamp 580 made of an LED or the like faces the outside from the display window 523.

  At the rear end of the housing 520, mounting bosses 533 are formed on the left and right sides of the lower member 530 side. When the ultrasonic generation unit 500 is installed on the installation table 200, the mounting boss 533 is fixed to the mounting portion 18 of the front frame 16 with a fixing screw 161.

  In the ultrasonic generation unit 500 of this modification, two identical ultrasonic generators 510 are provided, and the generated ultrasonic frequencies are the same. Therefore, in this modified example, the partition wall 301 does not have to be provided in the water storage tank 300.

  FIG. 12 is a block diagram illustrating a configuration of the fully automatic washing machine 1 according to the first modification.

  In this modified example, a cleaning button 88 is provided in the operation unit 80 in place of the simultaneous cleaning button 84, the low frequency cleaning button 85, the high frequency cleaning button 86, and the stop button 87 of the above embodiment. The cleaning button 88 is a button for starting and stopping the partial cleaning operation.

  Further, in this modified example, when the first detection switch 571 is turned on or off, an on signal or an off signal is output to the control unit 71, respectively, and when the second detection switch 572 is turned on or off, the on signal or the off signal, respectively. A signal is output to the control unit 71.

  Further, in the present modification example, the vibrator driving unit 77 drives the ultrasonic vibrator 511 of each ultrasonic generator 510 according to the control signal output from the control unit 71. The lamp driving unit 78 drives the notification lamp 580 according to the control signal output from the control unit 71.

  FIG. 13 is a flowchart showing the control operation of the partial cleaning operation according to the first modification. FIG. 14A is a diagram illustrating the state of the ultrasonic wave generation unit 500 and the object to be cleaned before the two ultrasonic wave generators 510 are operated according to the first modification, and FIG. It is a figure which shows the state of the ultrasonic generation unit 500 and the to-be-cleaned object when the two ultrasonic generators 510 are operating.

  Referring to FIG. 13, the control unit 71 monitors whether or not the cleaning button 88 has been pressed (S201). The user sets a portion to which the object to be cleaned is attached between the water storage tank 300 and the vibration horns 512 of the two ultrasonic generators 510 and presses the cleaning button 88.

  When the cleaning button 88 is pressed (S201: YES), the control unit 71 opens the second valve 63 (S202). Thereby, water flows into the water storage tank 300 from the water supply port 304. When water is stored in the water tank 300 until the water overflows from the water tank 300, the object to be cleaned is immersed in the stored water, and the water that has permeated into the object to be cleaned infiltrates the surface. A thin water layer is formed on the surface of the object to be cleaned, and the two vibrating horns 512 are in contact with the water layer.

  Next, the control unit 71 monitors whether either the first detection switch 571 or the second detection switch 572 is turned on (S203).

  As shown in FIG. 14A, when the two ultrasonic generators 510 are at the same height position, the first detection switch 571 and the second detection switch 572 are in an off state. When the user confirms that the object to be cleaned has been soaked in water and has oozed out of the surface, the user should lift the soiled part slightly in order to actively clean the part to be cleaned. The operation | movement which presses against the vibration horn 512 of the ultrasonic generator 510 is performed. As shown in FIG. 14B, for example, when an object to be cleaned is pressed against the vibration horn 512 of the second ultrasonic generator 510b, the second ultrasonic generator 510b rises and the second detection switch 572 is turned on. To do.

  When the first detection switch 571 or the second detection switch 572 is turned on (S203: YES), the control unit 71 energizes both ultrasonic transducers 511 to operate both ultrasonic generators 510 and informs them. The lamp 580 is turned on (S204).

  As shown in FIG. 14B, for example, when the second ultrasonic generator 510b is raised, the first ultrasonic generator 510a is lowered, so that the portion of the object to be cleaned on the first ultrasonic generator 510a side is changed. The first ultrasonic generator 510a is pressed downward in contact with the vibrating horn 512.

  As described with reference to FIGS. 9A to 9C, the ultrasonic wave generated from both ultrasonic generators 510 exerts a cleaning action on the object to be cleaned, and the dirt is removed from the object to be cleaned. At this time, as shown in FIG. 14B, even if the portion of the object to be cleaned on the second ultrasonic generator 510b side is lifted away from the water surface of the water tank 300, the first ultrasonic wave of the object to be cleaned is removed. Since the portion on the generator 510a side is pushed down by the first ultrasonic generator 510a, the state of contact with the water surface is maintained. As a result, the water that has oozed out on the surface side of the object to be cleaned on the first ultrasonic generator 510a side is transmitted to the second ultrasonic generator 510b side, so that the second ultrasonic generator 510b of the object to be cleaned is transferred. The water can be maintained on the side. Therefore, it is prevented that the cleaning performance of the object to be cleaned is deteriorated on the second ultrasonic wave generator 510b side due to the lack of moisture.

  During the operation of the ultrasonic generator 510, the controller 71 monitors whether or not both the first detection switch 571 and the second detection switch 572 are turned off (S205). When the user stops the operation of pressing the object to be cleaned against the vibration horn 512 of one ultrasonic generator 510 and both ultrasonic generators 510 return to the same height position, the first detection switch 571 and the second detection switch 571 Both detection switches 572 are turned off (S205: YES). When this happens, the control unit 71 stops the operations of both the ultrasonic generators 510 and turns off the notification lamp 580 (S206).

  Until the user completes the cleaning of the object to be cleaned and presses the cleaning button 88, the operations of S203 to S206 are repeated, and while the first detection switch 571 or the second detection switch 572 is ON, The ultrasonic generator 510 operates.

  When the washing button 88 is pressed (S207: YES), the controller 71 closes the second valve 63 and ends the water supply to the water storage tank 300 (S208). Thus, the partial cleaning operation ends.

  As described above, according to the configuration of this modified example, the object to be cleaned can maintain a stable water-holding state during the cleaning by the operation of both ultrasonic generators 510, thereby preventing the cleaning performance of the object to be cleaned from being deteriorated due to insufficient moisture. Is done.

  Further, according to the configuration of this modified example, when the user performs an operation of lifting the object to be cleaned and pressing it against the ultrasonic generator 510, that is, an operation for positively cleaning the object to be cleaned. Thus, the ultrasonic generator 510 can be automatically activated, and the user-friendliness is improved.

<Other changes>
In the above embodiment, the ultrasonic generation unit 100 includes the first ultrasonic generator 110 and the second ultrasonic generator 120 that generate ultrasonic waves having different frequencies. However, the ultrasonic generation unit 100 may be provided with two ultrasonic generators having the same frequency of generated ultrasonic waves. In this case, the partition wall 301 may not be provided in the water storage tank 300.

  In the first modification, the ultrasonic generation unit 500 includes the two ultrasonic generators 510 having the same frequency of generated ultrasonic waves. However, the ultrasonic generation unit 500 may be provided with two ultrasonic generators that generate ultrasonic waves having different frequencies. In this case, the partition wall 301 is preferably provided in the water storage tank 300.

  Furthermore, in the above embodiment, the low frequency cleaning button 85 for operating only the first ultrasonic generator 110 and the high frequency cleaning button 86 for operating only the second ultrasonic generator 120 are provided. However, the low-frequency cleaning button 85 and the high-frequency cleaning button 86 are not provided, and the first ultrasonic generator 110 and the second ultrasonic generator 120 may always be operated.

  Further, in the first modification, the ultrasonic generator 510 is operated based on the detection results of the first detection switch 571 and the second detection switch 572. However, the first detection switch 571 and the second detection switch 572 may not be provided, and an operation button operated by the user to operate the ultrasonic wave generator 510 may be provided.

  Furthermore, in the said embodiment, the water storage tank 300 is not completely partitioned off by the partition wall 301, and the 1st area | region 302 and the 2nd area | region 303 are connected in the rear part. However, a configuration in which the water storage tank 300 is completely partitioned by the partition wall 301 and the first region 302 and the second region 303 are not connected may be employed. In this case, a water supply port 304 is formed in each of the first region 302 and the second region 303.

  Furthermore, in the above embodiment, the ultrasonic cleaning device 50 is provided in the fully automatic washing machine 1. However, the ultrasonic cleaning device 50 may be provided in a washing machine other than the fully automatic washing machine 1, for example, a drum type washing machine. Moreover, the ultrasonic cleaning apparatus 50 may be provided in, for example, a fully automatic laundry dryer or a drum type laundry dryer having a drying function. In the drum type washing machine and the drum type washing and drying machine, a washing tub is constituted by an outer tub and a drum disposed in the outer tub.

  In addition, the embodiment of the present invention can be variously modified as appropriate within the scope of the technical idea shown in the claims.

1 Fully automatic washing machine (washing machine)
20 Outer tub (washing tub)
22 Laundry dewatering tank (Laundry tank)
50 Ultrasonic cleaning equipment
71 Control unit
100 Ultrasonic generator
110 First ultrasonic generator (first ultrasonic generator)
120 Second ultrasonic generator (second ultrasonic generator)
130 Housing
300 water tank
301 Partition wall (partition)
302 1st area | region (1st area | region)
303 2nd area | region (2nd area | region)
500 Ultrasonic wave generating unit 510a First ultrasonic wave generator (first ultrasonic wave generator)
510b Second ultrasonic generator (second ultrasonic generator)
520 housing
560 coupling mechanism
571 First detection switch (first detection unit)
572 Second detection switch (second detection unit)

Claims (6)

A first ultrasonic generator and a second ultrasonic generator that generate ultrasonic waves;
A housing in which the first ultrasonic generator and the second ultrasonic generator are accommodated side by side so that their tips are exposed;
A water storage tank for storing water for immersing an object to be cleaned that comes into contact with the tips of the first ultrasonic generator and the second ultrasonic generator exposed from the housing;
An ultrasonic cleaning apparatus comprising: The ultrasonic cleaning apparatus according to claim 1,
The height of the frequency of the ultrasonic wave generated by the first ultrasonic wave generator and the frequency of the ultrasonic wave generated by the second ultrasonic wave generator are different from each other.
An ultrasonic cleaning apparatus characterized by that. The ultrasonic cleaning apparatus according to claim 2,
A partition for partitioning between a first region corresponding to the first ultrasonic generator and a second region corresponding to the second ultrasonic generator in the water tank;
An ultrasonic cleaning apparatus characterized by that. In the ultrasonic cleaning device according to any one of claims 1 to 3,
The first ultrasonic generator and the second ultrasonic generator are accommodated in the housing so as to be movable in the vertical direction,
Generating the first ultrasonic wave so that when one of the first ultrasonic wave generator and the second ultrasonic wave generator is raised, the other ultrasonic wave generator is lowered. A coupling mechanism for coupling the body and the second ultrasonic generator,
An ultrasonic cleaning apparatus characterized by that. The ultrasonic cleaning apparatus according to claim 4,
A first detector that detects that the first ultrasonic generator has risen;
A second detector for detecting that the second ultrasonic generator has risen;
A controller that controls operations of the first ultrasonic generator and the second ultrasonic generator based on detection results of the first detector and the second detector;
An ultrasonic cleaning apparatus characterized by that. A laundry tub for storing and washing laundry;
The ultrasonic cleaning device according to any one of claims 1 to 5,
A washing machine comprising:

Images