CN111631659B - Efficient washing device capable of generating high-speed spinning liquid drops based on composite wetting surface - Google Patents
Efficient washing device capable of generating high-speed spinning liquid drops based on composite wetting surface Download PDFInfo
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- CN111631659B CN111631659B CN202010502551.3A CN202010502551A CN111631659B CN 111631659 B CN111631659 B CN 111631659B CN 202010502551 A CN202010502551 A CN 202010502551A CN 111631659 B CN111631659 B CN 111631659B
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- liquid drops
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/14—Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber
- A47L15/18—Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber with movably-mounted spraying devices
- A47L15/22—Rotary spraying devices
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
- A47L15/4236—Arrangements to sterilize or disinfect dishes or washing liquids
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
- A47L15/4278—Nozzles
- A47L15/428—Rotary nozzles
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
- A47L15/50—Racks ; Baskets
- A47L15/502—Cutlery baskets
Abstract
The invention provides a high-efficiency washing device capable of generating high-speed spinning liquid drops based on a composite wetting surface, which comprises a tableware containing cabinet body and a control system, wherein the tableware containing cabinet body is of a box-shaped structure with one end capable of being opened; the tableware containing cabinet body comprises a body and a cover body, wherein the cover body is used for covering an opening on the body; the rotary sprayer is communicated with an external water inlet pipe; the side wall and the top of the body are provided with miniature rotating disk arrays, and the surfaces of the rotating disks have composite wetting characteristics. According to the invention, the micro rotating disc array is arranged, the rotating disc has the super-hydrophobic/hydrophilic composite wetting surface, so that liquid drops rotating at a high speed can be formed when the liquid drops impact the super-hydrophobic/hydrophilic patterns on the rotating disc, and the liquid drops rotating at a high speed and having extremely high kinetic energy generate extremely strong impact force on the surface of tableware, thereby generating stronger removal depth and removal efficiency on dirt on the surface of the tableware.
Description
Technical Field
The invention belongs to the field of automatic cleaning, and particularly relates to a high-efficiency washing device for generating high-speed spinning liquid drops on a composite wetting surface.
Background
The dish washer is currently being widely used in dining halls, restaurants and a part of families to improve dish washing efficiency, reduce the working strength of personnel and ensure the safety and health of people's meals. The current conventional dishwasher operating principles can be roughly divided into two categories: one is that water is heated to about 60 ℃ at the bottom of the dish washer, the water is pushed to spray heads by a pump, the rotating spray heads spray the mixture of the water and the detergent to all directions to complete the washing and scouring processes, and after the washing is completed, the water returns to the bottom of the dish washer again and is finally discharged by a water pump. Another type is to use ultrasonic wave, the ultrasonic wave passing through the liquid medium will make the liquid medium vibrate at a very high frequency, when a certain vibration intensity is reached, many tiny bubbles will be generated in the liquid and closed instantly, and strong micro-explosion and shock wave will be generated to destroy the dirt on the surface of the tableware and fall off. However, both types of dishwashers have their own disadvantages: the first type of dish washing machine needs to be placed in a classified mode, gaps need to be reserved among the dishes, the dish washing machine can only wash a certain amount of dishes and is not suitable for washing a large amount of dishes, otherwise, the dish washing machine is not affected by too many dishes, and the dish washing efficiency is affected by dead angles which cannot be washed. The ultrasonic dish washing machine can not generate dead angles which can not be cleaned, but can generate some phenomena of unclean cleaning. Most importantly, the two dishwashers have a key problem that the cleaning time is too long, and the two dishwashers can be thoroughly cleaned, dried and disinfected within about one hour, so that the requirement of short time cannot be met.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a high-efficiency washing device for generating high-speed spinning liquid drops based on a composite wetting surface; the washing machine can ensure that the washing efficiency is better improved under the condition of cleaning, and the washing time is shortened.
The invention is realized by the following technical scheme:
a high-efficiency washing device capable of generating high-speed spinning liquid drops based on a composite wetting surface comprises a tableware containing cabinet body and a control system, wherein the tableware containing cabinet body is of a box-shaped structure with one end capable of being opened; the tableware containing cabinet body comprises a body and a cover body matched and connected with the body, and the cover body is used for covering an opening on the body;
the body is internally provided with a plurality of article holders and a rotary spray head, the rotary spray head is communicated with an external water inlet pipe, and a plurality of water spray holes are formed in the rotary spray head;
the side wall and the top of the body are provided with a micro rotating disc array, and the micro rotating disc array consists of a plurality of rotating discs; the rotating disc comprises a circular base and a power unit, wherein the power unit is electrically connected with the circular base and used for maintaining and controlling the rotation of the circular base;
the surface of the rotating disc has composite wetting characteristics, namely the surface of the rotating disc has super-hydrophobic/hydrophilic composite patterns, and the surface of the rotating disc with the super-hydrophobic/hydrophilic composite patterns is called an SH-SHL composite wetting surface; the SH-SHL composite wetting surface is a super-hydrophilic pattern which is prepared by superposing a super-hydrophobic surface with a high static contact angle and a low adhesive force and has a low static contact angle and a high adhesive force.
The invention has the following beneficial effects:
1. the high-efficiency washing device for generating high-speed spinning liquid drops on the basis of the composite wetting surface is provided with the miniature rotating disk array, the miniature rotating disk array is powered by the motor to rotate, the rotating disk has the super-hydrophobic/hydrophilic composite wetting surface, and when the liquid drops impact the surface of the rotating disk, the SH-SHL patterns on the surface of the rotating disk and the rotating disk act on the liquid drops. Firstly, the liquid drop impacts the surface pattern of the disc, the liquid drop spreads on the surface under the action of initial power, the liquid drop begins to retract after spreading to the maximum area due to larger super-hydrophobic area, and then enters a rebound state, at the moment, the liquid drop can shrink to the center of the mixed SH-SHL pattern along the super-hydrophilic stripe due to the super-hydrophilic spiral stripe passing through the super-hydrophilic spiral stripe in the retraction process of the liquid drop until the rotating arm reaches the maximum length (wherein the spiral hydrophilic stripe provides the rotating kinetic energy for the water drop), and then the liquid drop completely rebounds and leaves the wettable surface. Secondly, the rotating disc imparts a driving kinetic energy to the droplets impacting its surface, causing it to rotate at a faster speed. The SH-SHL mixed mode is combined with the translation kinetic energy of the impact liquid drops and the rotation momentum of the rotating substrate, so that higher energy conversion rate is realized, the liquid drops are faster to rotate, and the kinetic energy is extremely high. When the liquid drops rotating at high speed impact the surface of the tableware, the liquid drops rotating at high speed and having extremely high kinetic energy generate extremely strong impact force on the surface of the tableware (the puncture depth is far greater than that of a high-speed spinning bullet emitted by a barrel similar to a modern spiral rifling gun, and the non-spinning bullet has no rifling gun), so that the dirt on the surface of the tableware is removed at higher depth and higher removal efficiency, and the washing effect which is faster and higher than that of a traditional dish washing machine can be achieved.
2. The method adopts laser to prepare SH-SHL patterns on the surface of the rotating disc, overcomes the defects of low precision, long time consumption, complex process, high preparation cost and the like brought by the traditional process, greatly reduces the cost, shortens the production period and improves the working efficiency. In addition, the surface of the rotating disc is mainly of a super-hydrophobic structure, and the super-hydrophobic structure has a self-cleaning effect, so that the adhesion of harmful substances such as bacteria and the like can be reduced, and the effects of sterilization and disinfection are achieved to a certain extent.
Drawings
FIG. 1 is a block diagram of a high efficiency washing apparatus based on generation of high speed spinning droplets from a composite wetted surface;
FIG. 2 is a flow diagram for the preparation of SH-SHL composite wetted surfaces;
FIG. 3 is a photomicrograph of a finished SH-SHL composite wetted surface;
fig. 4 is a schematic snap-shot of droplets impacting a uniform SH-SHL composite wetted surface in the driven state (substrate speed of 1000 rpm).
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, the present invention provides a high-efficiency washing device generating high-speed spinning liquid drops based on a composite wetting surface, comprising a tableware placing cabinet 1 and a control system, wherein the tableware placing cabinet 1 is a box-shaped structure with one end capable of being opened, and is preferably a rectangular structure. The tableware containing cabinet body 1 comprises a body 11 and a cover body 12 connected with the body 11 in a matching mode, wherein the cover body 12 is used for covering an opening on the body 11.
The washing machine is characterized in that a plurality of article holders 2 and rotary nozzles 3 are arranged in the body 11, the rotary nozzles 3 are communicated with an external water inlet pipe 5, and a plurality of water spraying holes 4 are formed in the rotary nozzles and used for spraying clean water (or a mixture of water and detergent) to perform washing operation.
The side wall and the top of the body 11 are provided with micropore arrays, and each micropore in the micropore arrays is internally provided with a rotating disc 6. The rotating disc 6 comprises a circular base and a power unit electrically connected to the circular base for maintaining and controlling the rotation of the circular base.
The rotating disk 6 can also be directly installed on the inner side wall and the inner top of the body 11 in the form of a micro rotating disk array, so that it protrudes from the body 11, and thus the micro hole array does not need to be installed on the body 11.
The surface of the rotating disk has a composite wetting characteristic, that is, the surface of the rotating disk has a super-hydrophobic/hydrophilic composite pattern (SH-SHL pattern for short), and the surface of the rotating disk with the SH-SHL pattern can be called as an SH-SHL composite wetting surface. The SH-SHL composite wetting surface is a super-hydrophilic pattern which is prepared by superposing a super-hydrophobic surface with a high static contact angle and a low adhesive force and has a low static contact angle and a high adhesive force.
The rotating disk substrate may be made of corrosion-resistant aluminum alloy, stainless steel, or copper alloy. The preferred size is 5-20 mm in diameter and 1-5 mm in thickness. The power unit consists of a plurality of small motors and is controlled by a control system.
The connection between the rotating disc 6 and the body 11 is sealed so that water does not penetrate into the body 11 through the contact portion.
The SH-SHL composite wetting surface manufacturing method of the rotating disc, as shown in FIG. 2, comprises the following steps:
(1) preparing and clamping a rotating disc substrate sample;
the typical operation is to clean the surface of the rotating disc substrate with an ultrasonic ethanol bath for more than 3 minutes;
(2) carrying out full-width laser etching surface microstructure and chemical modification treatment on the surface of the rotating disc by using a pulse laser galvanometer scanning system to obtain a super-hydrophobic surface; by controlling various laser scanning parameters, the shape and the size of a laser etching surface microstructure can be accurately and effectively controlled, the super-hydrophobic performance (static contact angle and dynamic rolling angle) of the surface of the rotating disc is adjusted, and the method is fast and efficient.
Typical laser scanning parameters include: the laser wavelength is 515nm, the pulse width is 10ps, the pulse repetition frequency is 400kHz, the rotary disk is scanned with a cross microgrooves with a certain space on the whole width, the space between the microgrooves is 30 mu m, and the laser energy density is 1.28J/cm2The scanning speed was 300mm/s, and the number of times of scanning was 3. The spinning disk sample after laser scanning was immersed in a 0.01mol/L stearic acid (Sigma-Aldrich) solution at room temperature for 1 hour for chemical modification treatment and dried in an oven (60 ℃) for 10 minutes to obtain a low-adhesion superhydrophobic surface.
(3) And performing secondary laser scanning on the super-hydrophobic surface according to the constructed super-hydrophilic pattern to selectively remove the chemical modification layer to obtain the super-hydrophilic pattern with high adhesion, and finally forming a super-hydrophobic/hydrophilic composite wetting surface (an SH-SHL composite wetting surface, wherein a microscopic picture of the SH-SHL composite wetting surface is shown in fig. 3). Wherein the dimension of the super-hydrophilic pattern is slightly smaller than the size of the disc.
The typical super-hydrophilic pattern is a spiral stripe, and the diameter of an inscribed circle of the stripe is 1-4 mm.
When the efficient washing device based on the composite wetting surface to generate the high-speed spinning liquid drops works, water is sprayed out through the rotary spray head 3, the rotary disk 6 rotates simultaneously, the liquid drops can form high-speed whirling liquid drops when impacting the super-hydrophobic/hydrophilic pattern on the rotary disk 6, and the whirling high-speed liquid drops can achieve a washing effect more effectively than that of a traditional method.
When the liquid drops impact the super-hydrophobic/hydrophilic pattern on the rotating disk 6, the liquid drops can form high-speed whirling liquid drops, and the experimental verification result is shown in fig. 3:
the droplets were released from a height of 26cm and when they hit the rotating disc, the velocity was 2.3 m/s. The impact process is photographed using a high speed camera. In the rotating disk drive regime, super spin droplets are generated by additional torque transfer on the non-uniformly mixed SH-SHL pattern surface, as shown in fig. 4, with a maximum droplet rotation speed in excess of 96700 rpm. It can be seen that the SH-SHL hybrid mode, in combination with the translational kinetic energy of the impinging droplets and the rotational momentum of the rotating substrate, achieves a higher energy conversion rate, resulting in faster droplet rotation.
Through the experiment, the liquid drops can form high-speed whirling liquid drops when impacting the SH-SHL composite wetting surface on the rotating disc 6, and then the whirling high-speed liquid drops can achieve a more effective washing effect than the traditional method.
It will be obvious to those skilled in the art that the present invention may be varied in many ways, and that such variations are not to be regarded as a departure from the scope of the invention. All such modifications as would be obvious to one skilled in the art are intended to be included within the scope of this claim.
Claims (3)
1. The efficient washing device capable of generating high-speed spinning liquid drops on the basis of the composite wetting surface is characterized by comprising a tableware containing cabinet body (1) and a control system, wherein the tableware containing cabinet body (1) is of a box-shaped structure with one end capable of being opened; the tableware containing cabinet body (1) comprises a body (11) and a cover body (12) which is matched and connected with the body (11), wherein the cover body (12) is used for covering an opening on the body (11);
a plurality of article shelves (2) and rotary nozzles (3) are arranged in the body (11), the rotary nozzles (3) are communicated with an external water inlet pipe (5), and a plurality of water spray holes (4) are arranged on the rotary nozzles;
the side wall and the top of the body (11) are provided with a micro rotating disc array, and the micro rotating disc array consists of a plurality of rotating discs (6); the rotating disc (6) comprises a circular base and a power unit, wherein the power unit is electrically connected with the circular base and is used for maintaining and controlling the rotation of the circular base;
the surface of the rotating disk (6) has composite wetting characteristics, namely the surface of the rotating disk has super-hydrophobic/hydrophilic composite patterns, and the surface of the rotating disk with the super-hydrophobic/hydrophilic composite patterns is called as an SH-SHL composite wetting surface; the SH-SHL composite wetting surface is a super-hydrophilic pattern which is prepared by superposing a super-hydrophobic surface with a high static contact angle and a low adhesive force and has a low static contact angle and a high adhesive force.
2. The high-efficiency washing device for generating high-speed spinning liquid drops based on the composite wetting surface is characterized in that the side wall and the top of the body (11) are provided with a micropore array, each micropore in the micropore array is internally provided with a rotating disc (6), and the connecting position of the rotating disc (6) and the body (11) ensures the tightness.
3. The high-efficiency washing device for generating high-speed spinning liquid drops based on the composite wetting surface is characterized in that the rotating disc (6) is directly installed on the inner side wall and the inner top of the body (11) so as to be protruded out of the body (11).
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| CN202010502551.3A CN111631659B (en) | 2020-06-04 | 2020-06-04 | Efficient washing device capable of generating high-speed spinning liquid drops based on composite wetting surface |
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| CN202010502551.3A CN111631659B (en) | 2020-06-04 | 2020-06-04 | Efficient washing device capable of generating high-speed spinning liquid drops based on composite wetting surface |
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| CN111631659B true CN111631659B (en) | 2021-07-27 |
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Effective date of registration: 20220708 Address after: 230000 Room 203, building 2, phase I, e-commerce Park, Jinggang Road, Shushan Economic Development Zone, Hefei City, Anhui Province Patentee after: Hefei Jiuzhou Longteng scientific and technological achievement transformation Co.,Ltd. Address before: 325000 Zhejiang Wenzhou marine science and Technology Pioneer Park C1 Patentee before: INSTITUTE OF LASER AND OPTOELECTRONICS INTELLIGENT MANUFACTURING, WENZHOU University |