Ultrasonic cleaning device of washing machine
A technology for cleaning devices and washing machines, which can be applied to washing devices, textiles and papermaking, household appliances, etc., and can solve problems such as poor cleaning effect
Active Publication Date: 2016-05-04
蒋健
8 Cites 1 Cited by
AI-Extracted Technical Summary
Problems solved by technology
In this technical solution, the ultrasonic boxes are distributed on four sides, which can only produce large-density air bubbles in the side direction, and the cleaning effect is poor. For the stains on the inner w...
Method used
By arranging the planetary gear train, the planetary carrier 14 is connected with the drive motor 16, which can actively control the sun gear 12, that is, the vibrator mounting plate 3 and the ring gear 13, that is, the relative speed of the impeller 8, so that the vibrator mounting plate 3 can be properly The relative rotational speed—to realize the position change speed that excites different positions of the inner barrel to vibrate, and the appropriate absolute speed—to realize the position change speed that excites the vibration at different positions on the inner wall of the outer barrel to excite the bubble generation speed and position change speed in the liquid . In order to realize the comprehensive cleaning of the inner wall of the outer barrel and the inner barrel.
Fig. 6 is the contrast figure that the air bubble density that the cleaning device of the present embodiment can produce and the air bubble density of other schemes are distributed in space, among the figure, what show is the situation in the 180 ° circle; Fig. 7 is this The comparison diagram of the bubble density that can be produced by the cleaning device of the embodiment and the bubble density of other schemes in time distribution; A in Fig. 6 and Fig. 7 shows that under the situation of adopting the technical scheme of this embodiment, after the ultrasonic vibrator excites the bubble The instantaneous bubble density at the ultrasonic vibrator, the unit of A is 10000 bubbles/cubic centimeter. Since the fixed vibrator mounting plate covers the space in the washing machine as evenly as possible, a lot of ultrasonic vibrators will be arranged, so that the single volume of each ultrasonic vibrator will not be large. Correspondingly, the ultrasonic vibrator generated The bubble density will not be too large. However, in the technical solution of this embodiment, only four rows of ultrasonic vibrators are installed on the semi-ellipsoidal vibrator mounting plate, so the volume of a single ultrasonic vibrator can be appropriately increased, and the local bubble density can be increased.
The driving motor 16 drives the vibrator mounting plate 3 through the rotating shaft 9, so that the ultrasonic vibrator 4 on the vibrator mounting plate 3 can intermittently scan the liquid at any angle position in the inner barrel, constantly exciting the oscillation of the liquid, so that the stains It can fall off from the inner wall of the outer barrel and the inner barrel. Moreover, the oscillation is excited by means of rotational scanning, which can reduce the number of required ultrasonic vibrators 4 and reduce the manufacturing cost and complexity of the equipment. In the prior art, if a certain ultrasonic vibrator 4 is damaged, the liquid in this area will not be excited to oscillate. However, in this technical solution, even if a small number of ultrasonic vibrators 4 are damaged, other ultrasonic vibrators 4 that rotate he...
Abstract
The invention relates to an ultrasonic cleaning device of a washing machine. The ultrasonic cleaning device comprises a vibrator installation plate and ultrasonic vibrators. The vibrator installation plate is used for going deep into an inner barrel of the washing machine, the ultrasonic vibrators are installed on the vibrator installation plate and used for producing mechanical vibration and bubbles in liquid so that blots can be stripped, and the inner barrel and an outer barrel can be cleaned. By means of the ultrasonic cleaning device, the stubborn blots can be removed thoroughly, and the ultrasonic cleaning device is easy to operate, short in consumed time and free of damage, need not be detached and cleans the washing machine thoroughly, conveniently and rapidly.
Application Domain
Washing apparatusTextiles and paper
Technology Topic
Megasonic cleaningMechanical engineering +1
Image
Examples
- Experimental program(6)
Example Embodiment
[0072] Example 1:
[0073] figure 1 It is a schematic structural diagram of a washing machine ultrasonic cleaning device for a drum type washing machine or a front-opening washing machine of embodiment 1: figure 2 It is a schematic diagram of the state of the washing machine ultrasonic cleaning device used in the drum type washing machine or the front door washing machine of the embodiment 1 after being put into the washing machine; in the figure, the meaning of each reference sign is as follows: 1. ultrasonic generator; 2. mechanical connection Device; 3. Vibrator mounting plate; 4. Ultrasonic vibrator; 5. Inner barrel; 6. Outer barrel.
[0074] An ultrasonic cleaning device for washing machine used in drum type washing machine or front-opening washing machine, including:
[0075] The vibrator mounting plate 3 and the ultrasonic vibrator 4 are arranged horizontally to penetrate deep into the inner tub 5 of the washing machine;
[0076] The ultrasonic vibrator 4 is installed on the lower surface of the vibrator mounting plate 3 and is used to generate mechanical oscillation and generate bubbles in the cleaning liquid to peel off the stains between the inner barrel 5 and the outer barrel 6.
[0077] The ultrasonic generator 1 is also included. The ultrasonic generator 1 is mechanically connected to the vibrator mounting board 3 through a mechanical connecting device 2. The mechanical connecting device 2 is provided with an electrical connecting device for electrically coupling and connecting the ultrasonic vibrator 4 and the ultrasonic generator 1.
[0078] By directly inserting the vibrator mounting plate 3 with the ultrasonic vibrator 4 into the inner tub 5 of the washing machine, the outer tub 6 of the washing machine is used as a container for the cleaning liquid, and the outer tub 6 contains a small amount of cleaning liquid, so that the ultrasonic vibrator 4 can be Submerged in it to achieve the purpose of cleaning the inner and outer tub 6 of the washing machine. Because the inner tub 5 rotates as a whole during the washing process, stains will accumulate in the entire circumference of the inner tub 5, while the outer tub 6 is fixed, and the laundry liquid is only limited to the lower part of the outer tub 6, so the outer tub 6 Only the lower part will accumulate stains, cleaning the lower part of the outer barrel 6 can meet the needs.
[0079] Moreover, it can also greatly reduce the volume of the whole set of equipment and is convenient to move. It is professionally used to clean the parts of the barrel structure similar to the inner and outer barrel 6 of the washing machine, which are bulky, difficult to disassemble, and cannot be moved.
[0080] By separating the ultrasonic generator 1 from the vibrator mounting plate 3, the weight of the object that penetrates into the washing machine each time can be reduced, thereby facilitating the operator to put the vibrator mounting plate 3 into the washing machine.
[0081] Moreover, the high-frequency oscillation signal from the ultrasonic generator 1 is converted into a high-frequency mechanical oscillation by the ultrasonic vibrator 4 (the ultrasonic vibrator 4 is a device that converts high-frequency electrical energy into mechanical energy) and generates a large number of tiny bubbles in the liquid. These bubbles form and grow in the negative pressure zone where the ultrasonic wave propagates longitudinally. In the positive pressure zone, when the sound pressure reaches a certain value, the bubbles increase rapidly and then suddenly close. The closed bubbles can form a high temperature of several hundred degrees on the walls of the inner and outer barrels 6 And the instant high pressure of more than 1000 air pressure, so as to achieve the purpose of peeling off stains and cleaning the inner and outer barrels.
[0082] The operating principle of this embodiment is as follows:
[0083] When washing, open the front door of the drum washing machine so that the vibrator mounting plate 3 can penetrate into the inner tub 5 of the washing machine, and a small amount of washing liquid is injected into the outer tub 6 of the washing machine, so that the vibrator mounting plate 3 is sufficiently immersed in the washing liquid. The ultrasonic generator 1 is turned on and the inner barrel 5 is rotated, and the ultrasonic vibrator 4 excites the cleaning liquid to generate bubbles, cleans the rotating inner barrel 5 in the entire circumference, and cleans the lower part of the outer barrel 6.
Example Embodiment
[0084] Example 2:
[0085] image 3 It is a schematic structural diagram of a washing machine ultrasonic cleaning device used in a pulsator washing machine, a tilt-tub washing machine, or a top-opening washing machine in embodiment 2: Figure 4 It is a schematic diagram of the state of the ultrasonic cleaning device of the washing machine used in the pulsator washing machine or the inclined tub washing machine or the top-opening washing machine of the second embodiment after being put into the washing machine; Figure 4 In the middle, the inner and outer tubs of the washing machine are drawn in half section.
[0086] In the figure, the meaning of each reference sign is as follows: 1. Ultrasonic generator; 2. Mechanical connection device; 3. Vibrator mounting plate; 4. Ultrasonic vibrator; 5. Inner barrel; 6. Outer barrel.
[0087] A washing machine ultrasonic cleaning device used in a pulsator washing machine or a tilt-tub washing machine or a top-opening washing machine, comprising a vibrator mounting plate 3, which is used to go deep into the inner tub 5 of the washing machine;
[0088] An ultrasonic vibrator 4 is installed on the vibrator mounting plate 3, and the ultrasonic vibrator 4 is used to generate mechanical oscillation and generate bubbles in the liquid to peel off stains and clean the inner barrel 5 and the outer barrel 6. The vibrator mounting plate 3 is semi-ellipsoidal. In this embodiment, a total of 8 rows of ultrasonic vibrators 4 are installed on the vibrator mounting plate 3. The 8 rows of ultrasonic vibrators 4 can cover multiple directions of the inner tub 5 of the washing machine, so as to achieve multi-angles on the inner wall of the outer tub 6 and the inner tub 5 of the washing machine. Full coverage.
[0089] The vibrator mounting board 3 is mechanically connected to the ultrasonic generator through a mechanical connecting device 2, and an electrical connecting device for electrically coupling and connecting the ultrasonic vibrator 4 and the ultrasonic generator is provided on the mechanical connecting device 2.
[0090] By directly inserting the vibrator mounting plate 3 with the ultrasonic vibrator 4 into the inner tub 5 of the washing machine, the inner and outer tubs of the washing machine are used as containers for the cleaning liquid, so that the ultrasonic vibrator 4 is immersed in it to achieve the purpose of professional cleaning of the inner and outer tubs of the washing machine. Moreover, it can also greatly reduce the volume of the whole set of equipment and is convenient to move. It is professionally used to clean the barrel structure similar to the inner and outer barrels of washing machines, which are large in size, difficult to disassemble, and cannot be moved.
[0091] By separating the ultrasonic generator from the vibrator mounting plate 3, the weight of the object that penetrates into the washing machine each time can be reduced, thereby facilitating the operator to put the vibrator mounting plate 3 into the washing machine.
[0092] Moreover, the high-frequency oscillation signal from the ultrasonic generator is converted into high-frequency mechanical oscillation by a transducer (ultrasonic vibrator is a device that converts high-frequency electrical energy into mechanical energy) and generates a large number of tiny bubbles in the liquid. It forms and grows in the negative pressure zone where the ultrasonic wave propagates longitudinally, while in the positive pressure zone, when the sound pressure reaches a certain value, the bubble increases rapidly, and then suddenly closes. The bubble closure can form a high temperature of several hundred degrees and exceed the wall of the inner and outer barrels 6 The instant high pressure of 1000 air pressure can achieve the purpose of peeling off stains and cleaning the inner and outer barrels 6.
[0093] Setting the vibrator mounting plate 3 into a semi-ellipsoidal shape allows the ultrasonic vibrators 4 distributed on it to face upward, downward, and obliquely downward, and are distributed in all directions, even on the side walls of the inner barrel 5 and the outer barrel 6 At the junction with the bottom, the oscillation caused by the ultrasonic vibrator 4 can also be covered, which eliminates the cleaning dead angle.
[0094] The operating principle of this embodiment is:
[0095] In actual cleaning (take cleaning the inner tub 5 and outer tub 6 of the washing machine as an example), fill the inner tub 5 and outer tub 6 of the washing machine with water or other cleaning fluid, immerse the vibrator mounting plate 3 in it, and turn on the ultrasonic generator power switch to let the ultrasonic wave Spread in the cleaning liquid to produce a cleaning effect. After 5-20 minutes, turn off the power of the ultrasonic generator, take out the vibrator mounting plate 3, and drain the solution in the inner tub 5 and outer tub 6 of the washing machine.
Example Embodiment
[0096] Example 3:
[0097] Figure 5 It is a partial structural diagram of Example 3. In the figure, the definition of the same reference numerals as in the drawings used in Embodiment 2 still follows the definition in Embodiment 2. The meanings of the reference numerals newly appearing in the drawings of Embodiment 2 are as follows: 9. Rotating shaft; 10. Photoelectric encoder; 11. Frame; 16. Drive motor.
[0098] The difference between this embodiment and embodiment 2 is that the vibrator mounting plate 3 is not fixedly installed on the mechanical connection device, but:
[0099] The vibrator mounting plate 3 is mounted on the rotating shaft 9 in a key connection, the rotation axis of the vibrator mounting plate 3 is the same as the rotating axis of the inner tub of the washing machine, and the frame 11 is fixedly connected with the connecting device.
[0100] The ultrasonic vibrator 4 is installed at the junction of two planes and the ellipsoidal surface. The two planes are the first plane and the second plane. The first plane and the second plane are perpendicular to each other and both pass through the axis of the vibrator mounting plate 3. The vibrator is installed The rotation axis of the plate 3 is perpendicular to the horizontal plane. That is, four rows of ultrasonic vibrators 4 are respectively installed on the four generatrixes of the semi-ellipsoidal surface of the vibrator mounting plate 3 at an angle of 90° apart. The vibrator mounting plate is installed on the rotating shaft 9 with 3 keys, the rotating shaft 9 is connected with the driving motor 16, the driving motor 16 is installed on the frame 11, and the frame 11 is fixedly connected with the mechanical connection device;
[0101] The impeller 8 is connected with the shaft 9 with a key, and the shaft 9 is connected with the vibrator mounting plate 3 with a key,
[0102] The vibrator mounting plate 3 is installed on the rotating shaft 9 in a circumferentially fixed manner, the rotating shaft 9 is installed on the frame 11 in a manner capable of rotating along the axis of the rotating shaft 9 itself, and the rotating shaft 9 is fixedly connected to the rotor part of the photoelectric encoder 10 in the circumferential direction, The encoder also has a stator part, which is fixedly connected to the frame 11, and the encoder is used to record the rotation angle of the rotating shaft 9 to prevent the vibrator mounting plate 3 from rotating too large relative to the mechanical connection device, and the wire is twisted.
[0103] Through the photoelectric encoder 10, the instant position of the vibrator mounting plate 3 can be known. When the rotation amplitude of the vibrator mounting plate 3 is too large, so that the cable connecting the ultrasonic vibrator 4 and the ultrasonic generator is too severely twisted, an alarm signal can be issued For example, the warning light flashes or the buzzer sounds, for the user to stop or reverse the washing machine in an emergency, so that the washing machine reverses in time to ensure that the cable will not be damaged due to excessive twisting.
[0104] The drive motor 16 drives the vibrator mounting plate 3 through the rotating shaft 9 so that the ultrasonic vibrator 4 on the vibrator mounting plate 3 can intermittently scan the liquid at any angular position in the inner barrel, and continuously stimulate the oscillation of the liquid, so that the dirt can be removed from the outside. The inner wall of the barrel and the inner barrel fall off. Moreover, adopting a rotating scanning method to excite the oscillation can reduce the number of ultrasonic vibrators 4 required, and reduce the manufacturing cost and complexity of the device. In the prior art, if a certain ultrasonic vibrator 4 is damaged, the liquid in this area will not be excited to oscillate. In this technical solution, even if a small number of ultrasonic vibrators 4 are damaged, other ultrasonic vibrators 4 rotating here can compensate for their effects, which improves the reliability of the system.
[0105] The bubble density that can be generated by the cleaning device of this embodiment is compared with the bubble density of other solutions. Image 6 , 7 Shown.
[0106] Image 6 It is a comparison diagram of the spatial distribution of the bubble density that can be generated by the cleaning device of this embodiment and the bubble density of other solutions. The figure shows the situation within a 180° circumference; Figure 7 It is a comparison diagram of the bubble density generated by the cleaning device of this embodiment and the bubble density of other solutions in time distribution; Image 6 with Figure 7 In the case of using the technical solution of this embodiment, the bubble density at the ultrasonic vibrator instantaneously after the ultrasonic vibrator excites the bubble, and the unit of A is 10,000 bubbles/cm3. Since the fixed vibrator mounting plate covers the space in the washing machine as evenly as possible, a lot of ultrasonic vibrators are arranged, so that the single body of each ultrasonic vibrator cannot be larger. Correspondingly, the ultrasonic vibrator produces The bubble density will not be too large. In the technical solution of this embodiment, only 4 rows of ultrasonic vibrators are installed on the semi-ellipsoidal vibrator mounting plate, so the volume of a single ultrasonic vibrator can be appropriately increased, which can increase the local bubble density.
[0107] Image 6 The wave curve in shows the distribution of bubbles when the vibrator mounting plate 3 shown in Example 3 is used as an example to excite bubbles. In the figure, because 8 rows of ultrasonic waves are evenly distributed on the semi-ellipsoidal vibrator mounting plate 3 For the vibrator 4, the distance between each row of ultrasonic vibrators 4 and the ultrasonic vibrator 4 is 45°. Therefore, in the area directly facing the ultrasonic vibrator 4, the density of bubbles is relatively high, while in the area between the ultrasonic vibrators 4 of each row, The density of bubbles is small. With the technical solution of this embodiment, since the ultrasonic vibrator 4 is rotating, the bubble will not disappear immediately after the ultrasonic vibrator 4 generates a bubble at a certain position. Before the bubble disappears completely, the ultrasonic vibrator 4 will move to New bubbles are generated here, so as to ensure that the density of the bubbles does not drop to a very low level. Therefore, in general, each circumferential angle outside the vibrator mounting plate 3 can maintain a high bubble density.
[0108] Figure 7 The curve represented by the dotted line in the middle is the state where the rotation speed is 2 rpm, the curve represented by the double-dotted line is the rotation speed state of 0.5 rpm, and the curve represented by the solid line is the state where the rotation speed is 1 rpm. Due to the fast speed of 2 revolutions per second, after the ultrasonic rotor generates bubbles, the bubbles are destroyed by the rapidly flowing water flow faster, so the bubble density cannot be maintained for a long time. When the rotation speed is 0.5 rpm, although the bubble is destroyed by the water flow slower, the bubble itself cannot be stored for a long time, and it will gradually rise and burst, but it takes a long time to get the ultrasonic vibrator 4 Excite again to supplement the bubble density. Therefore, the applicant’s repeated tests have shown that at 1 revolution per second, bubbles can be regenerated relatively quickly to prevent the bubble density from decreasing too low. Moreover, it will not produce a faster water flow to destroy the bubbles just formed, resulting in a rapid drop in bubble density.
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