Bubble generating device for a dishwasher and dishwasher

Abstract

The application discloses a bubble generating device of a dishwasher and the dishwasher. The device comprises a vortex pump, a pump shell and a pump wheel installed in the pump shell. The pump shell and the pump wheel cooperate to form a flow channel. An air inlet pipe is used to introduce air into the vortex pump. A first water inlet is used to supply washing liquid to the vortex pump. A first water outlet is used to guide the washing liquid out of the vortex pump. The position of the air suction end of the air inlet pipe has a certain height. The outlet of the air inlet pipe extends to the root of the pump wheel teeth. The application uses washing liquid with bubbles to perform washing, which can accelerate the dissolution of the detergent and reduce the detergent residue.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of washing equipment, and particularly relates to a bubble generating device of a dish washing machine and the dish washing machine. BACKGROUND

[0002] With the improvement of living standards, people have higher and higher requirements for the quality of life, and thus have higher and higher requirements for kitchen utensils, aiming to simplify the tedious housework. The cleanliness of kitchen utensils has always been one of the problems that people pay great attention to. Usually, people feel unbearable when they face a mess after meals and their hands are full of oil stains. In the prior art, people mainly use detergents to clean vegetables, fruits and dishes. In such a cleaning method, some detergents will remain on the surface of the objects, which will have adverse effects on human health, and the water containing the detergents will enter the sewer, causing pollution. As an excellent product, the dish washing machine has gradually entered people's lives. The dish washing machine is a device for automatically cleaning dishes, chopsticks, plates, dishes, knives, forks and other tableware and even fruits and vegetables, greatly facilitating people's lives. The existing dish washing machine mainly uses mechanical and water flow impact generated by the mechanical to clean, which has the disadvantages of low cleaning rate, easy damage to tableware, single function, poor practicability, difficulty in popularization and the like, and the existing ordinary dish washing machine on the market often uses the high-temperature boiling method to achieve the sterilization and disinfection effect by high temperature. The appearance of the sink type cleaning machine solves the problem that a large amount of tableware with oil stains can be easily cleaned without touching the hands, achieves the purpose of automatic dish washing, and brings great convenience to people's life. The sink type cleaning machine is an integrated design of a common sink and a dish washing machine, has the functions of oil removal by heating and food residue removal by water flow, and is suitable for cleaning tableware, fruits and the like. However, the existing sink type cleaning machine has the problems of using dish washing powder and dish washing powder residue, and the dish washing powder residue may cause health hazards to consumers, but if the dish washing powder is reduced or not used, the problem of uncleanliness will exist.

[0003] Therefore, the present application is proposed. SUMMARY

[0004] The technical problem to be solved by the present application is to overcome the shortcomings of the prior art, and to provide a bubble generating device of a dish washing machine capable of generating micro-bubbles.

[0005] Another object of the present application is to provide a dish washing machine having the bubble generating device of the dish washing machine.

[0006] To solve the above technical problems, the basic idea of the technical solution of the present application is as follows:

[0007] A bubble generating device of a dish washing machine, the device comprising

[0008] A vortex pump comprises a pump housing and a pump wheel installed in the pump housing, the pump housing and the pump wheel cooperating to form a flow channel;

[0009] An air inlet pipe for introducing air into the vortex pump;

[0010] A first water inlet for supplying washing liquid to the vortex pump;

[0011] A first water outlet for leading washing liquid out of the vortex pump.

[0012] In the above scheme, the bubble generating device can generate micro-bubbles below 50 microns. The micro-bubbles have the characteristics of long residence time in water and small bubble size. The bursting force of the micro-bubbles can effectively remove stains on the washing items by water molecules. The micro-bubbles can not easily deposit with the washing agent, and the continuous bursting can accelerate the dissolution of the washing agent, thus improving the cleaning capacity of the dishwasher.

[0013] Further,

[0014] The pump wheel comprises a disc-shaped pump wheel body and pump wheel teeth radially arranged on the circumference of the pump wheel body.

[0015] Further,

[0016] The air inlet pipe extends into the pump housing;

[0017] Preferably, the outlet of the air inlet pipe extends to the root of the pump wheel teeth.

[0018] In the above scheme, the outlet end of the air inlet pipe directly extends to the root of the pump wheel teeth, so that the vortex pump can suck a large amount of air, and the bubble generating device can generate a large number of micro-nano bubbles.

[0019] Further,

[0020] The diameter d of the pump wheel body is smaller than the diameter D of the outer edge of the pump wheel teeth;

[0021] Preferably, the range of d / D is 0.5-1;

[0022] Preferably, the range of d / D is 0.8-0.9;

[0023] Preferably, the range of d / D is 0.86-0.88.

[0024] Further,

[0025] The number of the pump wheel teeth is 60±20;

[0026] Preferably, the number of the pump wheel teeth is 45±5.

[0027] In the above scheme, the length of the pump wheel teeth is relatively short compared to the diameter of the pump wheel body, and the number of pump wheel teeth is relatively large, which ensures that the vortex pump generates fine bubbles.

[0028] Further,

[0029] The vortex pump further comprises a motor, which is a brushless DC motor.

[0030] Further,

[0031] The rotational speed of the vortex pump ranges from 3000 to 9000 revolutions per minute.

[0032] In the above scheme, the rapidly rotating pump wheel shears the bubbles in the washing liquid to form micro-bubbles, resulting in a higher bubble generation rate and smaller bubble size.

[0033] A dishwasher comprising the bubble generating device of the dishwasher described above, further comprising

[0034] The inner container comprises a second water inlet and a second water outlet, and the second water inlet is in communication with the first water outlet;

[0035] The drainage unit is in communication with an external drainage device;

[0036] The first switching valve has an input end in communication with the second water outlet, and an output end in communication with the first water inlet and / or the drainage unit.

[0037] In the above scheme, the washing liquid in the inner container is circulated to the bubble generating unit through the first switching valve, and then the washing liquid containing bubbles is generated and provided to the dishwasher inner container for washing dishes, which can achieve the purpose of water saving without reducing the washing liquid level.

[0038] Further,

[0039] Further comprising

[0040] The water inlet unit is in communication with an external water supply device;

[0041] The second switching valve has an input end in communication with the water inlet unit, and an output end in communication with the first water inlet and / or the second water inlet.

[0042] In the above scheme, the second switching valve is provided to allow users to choose whether to wash dishes with washing liquid containing bubbles according to actual needs, which is more selective and improves user experience.

[0043] Further,

[0044] The position of the gas suction end of the air inlet pipe has a certain height;

[0045] Preferably, the air suction end of the air inlet pipe is higher than the highest water level of the dishwasher.

[0046] In the above scheme, the air suction end of the air inlet pipe is higher than the highest water level of the washing tank, so as to avoid the washing liquid in the washing tank from flowing out of the air inlet pipe.

[0047] Further,

[0048] The dishwasher comprises a sink dishwasher.

[0049] In the above scheme, the dishwasher comprises a sink dishwasher, so that the washing, fruit and vegetable cleaning and other kinetic energy can be integrated in the sink, the washing capacity is large, and the washing is clean and environmentally friendly.

[0050] After the above technical scheme is adopted, the present application has the following beneficial effects compared with the prior art.

[0051] 1. The bubble generating device of the dishwasher of the present application can generate micro-bubbles below 50 microns. The micro-bubbles have the characteristics of long residence time in water and small bubble size. The bursting force of the micro-bubbles can effectively remove the stains on the washing articles by water molecules. The micro-bubbles can not easily deposit the detergent, and the continuous bursting can accelerate the dissolution of the detergent, so that the cleaning capacity of the dishwasher is strong.

[0052] 2. The first switching valve of the present application circulates the washing water in the inner container to the bubble generating device, so that the washing liquid in the dishwasher can be recycled, thereby saving water.

[0053] 3. The bubble generating device of the dishwasher of the present application comprises an air inlet pipe, and the air inlet pipe extends into the tooth root of the pump wheel, so as to ensure that the turbine pump generates a sufficient number of micro-bubbles.

[0054] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0055] The accompanying drawings are part of the present application and serve to provide a further understanding of the present application. The schematic embodiments of the present application and their descriptions serve to explain the present application, but do not constitute an improper limitation on the present application. Obviously, the accompanying drawings in the following description are only some embodiments, and other drawings can be obtained by those skilled in the art without creative labor. In the drawings:

[0056] Figure 1 is a structural schematic view of the vortex pump of the present application;

[0057] Figure 2 is Figure 1 A-A view in the above-mentioned

[0058] Figure 3is a schematic diagram of a dishwasher according to the present application.

[0059] In the figure: 1, sink; 2, dishwasher upper cover; 3, dishwasher; 31, inner tank; 311, second water inlet; 312, second water outlet; 32, drainage unit; 33, first switching valve; 34, water inlet unit; 35, second switching valve; 6, bubble generating device; 61, vortex pump; 611, motor; 612, pump wheel; 6121, pump wheel body; 6122, pump wheel teeth; 613, pump shell; 616, shaft; 63, first water inlet; 64, first water outlet; 62, air inlet pipe; 11, water inlet pipe; 12, external water supply equipment; 13, external drainage equipment;

[0060] D, diameter of outer edge of pump wheel teeth; d, diameter of pump wheel body.

[0061] It should be noted that the drawings and the written description are not intended to limit the scope of the present application in any way, but are merely to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0062] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments will be described clearly and completely below with reference to the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application, but are not used to limit the scope of the present application.

[0063] In the description of the present application, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are merely for the convenience of describing the present application and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0064] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0065] As Figures 1 to 3As shown, this invention provides a bubble generating device for a dishwasher and a dishwasher. The bubble generating device 6 of the dishwasher includes a vortex pump 61, which includes a pump housing 613 and a pump wheel 612 installed in the pump housing 613. The pump housing 613 and the pump wheel 612 cooperate to form a flow channel; an air inlet pipe 62 for introducing gas into the vortex pump 61; a first water inlet 63 for supplying washing liquid to the vortex pump; and a first water outlet 64 for discharging the washing liquid out of the vortex pump 61. The bubble generating device 6 of the dishwasher of this invention can generate microbubbles smaller than 50 micrometers. Microbubbles have the characteristics of long residence time in water and small bubble size. The bursting force of microbubbles can enable water molecules to effectively remove stains from the washed items. Microbubbles prevent detergent from depositing, and the continuous bursting accelerates the dissolution of detergent, resulting in strong cleaning ability for the dishwasher.

[0066] The cleanliness and hygiene of kitchen utensils has always been a major concern, as the mess and greasy hands after a meal are often unbearable. The dishwasher 3 is a device that automatically cleans bowls, chopsticks, plates, dishes, knives, forks, and even fruits and vegetables. Bowls and dishes are characterized by heavy grease and difficulty in cleaning, while fruits and vegetables often have pesticide residues. Therefore, the cleaning requirements for bowls and dishes and fruits and vegetables are different. This invention features at least two washing tanks, allowing for separate cleaning of bowls and dishes, fruits and vegetables, or for washing other items with special cleaning needs, such as baby bottles. Currently, this invention mainly uses detergent to clean vegetables, fruits, and bowls and dishes. In this method, some detergent residue remains on the surface of the items, which can have adverse effects on human health. Additionally, water containing detergent enters the sewer system, causing pollution. This invention incorporates a bubble generator 6 to produce microbubbles. Due to the presence of these ultra-fine bubbles, the bursting force of the microbubbles allows water molecules to effectively remove stains from the items being washed. The microbubbles also prevent detergent from settling, and the continuous bursting accelerates the dissolution of the detergent. Meanwhile, this invention integrates dishwashing and fruit and vegetable purification functions into the kitchen sink, freeing users from the embarrassment of "bending over to pick them up". It can hold a lot of various tableware for washing at one time, with a large capacity, and is both clean and environmentally friendly.

[0067] Example 1

[0068] like Figures 1 to 3 As shown, this embodiment provides a bubble generating device for a dishwasher. The device includes a vortex pump 61, which includes a pump housing 613 and a pump wheel 612 installed inside the pump housing 613. The pump housing 613 and the pump wheel 612 cooperate to form a flow channel; an air inlet pipe 62 for introducing gas into the vortex pump 61; a first water inlet 63 for supplying washing liquid to the vortex pump; and a first water outlet 64 for discharging the washing liquid from the vortex pump.

[0069] Specifically, the bubble generating device 6 comprises a first water inlet for supplying the washing liquid to the vortex pump 61; and the vortex pump 61, which comprises a pump wheel 612, the pump wheel 612 comprising a disc-shaped pump wheel body 6121 and pump wheel teeth 6122 radially arranged on the circumference of the pump wheel body 6121, the diameter d of the pump wheel body 6121 being smaller than the diameter D of the outer edge of the pump wheel teeth 6122; and the number of the pump wheel teeth 6122 is 60±20.

[0070] In detail, as shown in Figure 1 and Figure 2 The vortex pump 61 comprises a pump shell 613, a motor 611, a shaft 616 and a pump wheel 612, the motor 611 comprising a direct current power terminal, an outer stator, a coil, a bearing, an inner rotor, a permanent magnet, a shaft sealing ring and a pump shell 613 sealing ring; the pump wheel 612 comprises a pump wheel body 6121; the pump wheel body 6121 is provided with pump wheel teeth 6122; and the vortex pump 61 has a first water inlet 63 and a first water outlet 64.

[0071] Preferably, the number of the pump wheel teeth 6122 of the vortex pump 61 is 60±20;

[0072] Preferably, the number of the pump wheel teeth 6122 of the vortex pump 61 is 45±5;

[0073] Preferably, the ratio between the diameter d of the pump wheel body of the vortex pump 61 and the diameter D of the pump wheel body plus the pump wheel teeth is in the range of 0.5-1;

[0074] Preferably, the ratio between the diameter d of the pump wheel body of the vortex pump 61 and the diameter D of the pump wheel body plus the pump wheel teeth is in the range of 0.8-0.9;

[0075] Preferably, the ratio between the diameter d of the pump wheel body of the vortex pump 61 and the diameter D of the pump wheel body plus the pump wheel teeth is in the range of 0.86-0.88;

[0076] Preferably, the vortex pump 61 is a BLDC (Brushless Direct Current Motor, BLDCM) brushless direct current motor pump, and the rotating speed can be adjusted to 3000-9000 revolutions per minute.

[0077] The bubble generating device 6 further comprises an air inlet pipe 62, which is arranged between the input end of the bubble generating unit 61 and the water inlet unit 34, and is used to add air into the washing liquid. The air suction end of the air inlet pipe 62 is arranged at a certain height; preferably, the air suction end of the air inlet pipe 62 is arranged higher than the highest water level of the washing tank, and more preferably, the outlet of the air inlet pipe extends to the vicinity of the root of the pump wheel teeth 6122. When the pump wheel 612 sucks the liquid mixed with air, the air can enter the space between the pump wheel teeth 6122 from the suction port, and as the liquid pressure gradually increases along the flow, the air is compressed to the root of the pump wheel teeth 6122, and the volume continuously decreases. When the flow reaches the outlet end of the flow channel, the liquid at the end of the flow channel is rapidly displaced in the radial direction into the space between the pump wheel teeth 6122, and the other air accumulated at the root of the pump wheel teeth 6122 is squeezed out from the outlet.

[0078] The micro-bubbles generated by the bubble generating device 6 in the embodiment are micro-bubbles with a diameter of less than 50 microns generated during bubble generation, and can also be called bubbles, micron bubbles or nanometer bubbles according to the diameter range. There is a special gas state on the interface between the gas and the liquid. The micro-bubbles are micro-bubbles with a diameter of less than 50 microns generated during bubble generation, and are also called bubbles. After the micro-bubbles are generated, the bubbles shrink by themselves. In this process, the rising speed of the bubbles becomes slow due to the fact that the bubbles become small, resulting in high melting efficiency. During the shrinkage process of the micro-bubbles, the negative charge increases. So far, the peak state of the negative charge of the bubbles is when the diameter of the bubbles is 1-30 microns. When the diameter of the bubbles is smaller than them, there is a tendency that the negative charge decreases.

[0079] The micro-bubbles are generated by the motor 611 driving the pump wheel 612, the pump wheel 612 rotating in the pump cavity, the washing liquid in the outer cylinder being sucked into the pump body, and the air being sucked in at a certain ratio by the air inlet pipe 62. The micro-bubbles are generated by the pump wheel 612 air floatation technology.

[0080] More preferably, the pump wheel 612 of the vortex pump 61 can generate high shear force, and can achieve a better dispersion distribution state of the air. The bubble generating unit 61 comprises the vortex pump 61, a multi-stage centrifugal pump, and the principle is to combine the pressure air dissolving technology with the air suction of the pump wheel 612. Due to the high-pressure environment and the strong turbulence in the pump cavity, the air is quickly dissolved in the water, and part of the sucked air is sheared to form micro-bubbles due to the high-speed rotation of the pump wheel 612. The bubble generation rate is higher, and the size of the generated bubbles is smaller.

[0081] In the above scheme, the bubble generating device of the dishwasher can generate micro-bubbles with a diameter of less than 50 microns. The micro-bubbles have the characteristics of long residence time in water and small bubble size. The bursting force of the micro-bubbles can effectively make the water molecules carry the stains on the washing articles away. The micro-bubbles can not easily deposit the detergent, and the continuous bursting can accelerate the dissolution of the detergent, and the cleaning ability of the dishwasher is strong.

[0082] Example 2

[0083] like Figure 3 As shown, this embodiment provides a dishwasher, including the bubble generating device of the dishwasher described above, and also includes...

[0084] The inner liner 31 includes a second water inlet 311 and a second water outlet 312, wherein the second water inlet 312 is connected to the first water outlet 64.

[0085] Drainage unit 32, which is connected to external drainage equipment 13;

[0086] The first switching valve 33 has its input end connected to the second outlet 312 and its output end connected to the first inlet 64 and / or the drainage unit 32.

[0087] Specifically, the washing liquid in the inner tub 31 is circulated to the bubble generator through the first switching valve 33, thereby generating washing liquid containing bubbles, which is then supplied to the inner tub 31 of the dishwasher to wash the dishes, achieving water conservation without lowering the washing liquid level. Users can also choose to drain the washing liquid in the inner tub 31 to the external drainage device 13 outside the dishwasher through the drainage unit 32.

[0088] It also includes a water inlet unit 34, which is connected to the external water supply equipment 12;

[0089] The second switching valve 35 is connected to the water inlet unit 34 at its input end, and the output end of the second switching valve 35 is connected to the first water inlet 63 and / or the second water inlet 311.

[0090] Specifically, a second switching valve 35 is provided so that users can choose whether to use a detergent containing bubbles to wash the tableware according to their actual needs. That is, if the tableware is lightly soiled, users can choose to wash the tableware directly with detergent, or if the tableware is heavily soiled, users can choose to wash the tableware with detergent containing micro-nano bubbles, which removes the stains from the items. The micro-bubbles prevent the detergent from settling, and the continuous bursting accelerates the dissolution of the detergent, giving users more choices and improving the user experience.

[0091] Example 3

[0092] The embodiment provides a dish washing machine, which comprises a bubble generating device of the dish washing machine provided in the embodiment one. The dish washing machine comprises a sink type dish washing machine, and the sink type dish washing machine comprises at least two washing tanks, which are respectively dish washing machines, fruit and vegetable cleaning machines and the like. The embodiment integrates the functions of dish washing and fruit and vegetable cleaning into a kitchen sink, so that the user can say goodbye to the embarrassment of "bending to pick up", and a large capacity of various tableware can be washed at one time, and the dish washing machine is clean and environment-friendly.

[0093] In the description provided herein, numerous specific details are set forth. However, it is understood that embodiments of the application can be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

[0094] Aspects of the present application can be modified, if necessary, to employ the examples, concepts and technologies of the present application in conjunction with the mere act of reciting a patent, licensing exhibition, drawing, or the like. In other words, all possible combinations of claim limitations can be used.

[0095] Furthermore, to one skilled in the art, and as recognized by those skilled in the art, while some embodiments described herein include certain features that are not included in other embodiments, combinations of features of different embodiments are also contemplated to be within the scope of the application and form different embodiments, e.g., where combinations of features are employed consistent with the subject matter of the disclosure and the technical problem to be solved by the present application.

[0096] The above description is only preferred embodiments of the present application and is not intended to limit the present application in any form. Although the present application has been disclosed as the above preferred embodiments, it is not intended to limit the present application, and any skilled person in the art can make some changes or modifications to the above-mentioned technical content as equivalent embodiments with slight changes or modifications without departing from the technical solution of the present application. Any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present application are still within the scope of the present application.

Claims

1. A bubble generating device of a dishwasher, characterized by: A device for generating microbubbles of less than 50 microns, the device comprising A vortex pump, the vortex pump comprising a pump housing and a pump wheel mounted in the pump housing, the pump housing and the pump wheel cooperating to form a flow channel, the pump wheel comprising a disc-shaped pump wheel body and pump wheel teeth radially arranged on the circumference of the pump wheel body, the vortex pump further comprising a motor, the motor being a brushless direct current motor, the diameter d of the pump wheel body being smaller than the diameter D of the outer edge of the pump wheel teeth, d / D being in the range of 0.86-0.88, the number of the pump wheel teeth being 45±5, the rotational speed of the vortex pump being in the range of 3000-9000 revolutions per minute; An air inlet pipe for introducing gas into the vortex pump, the outlet of the air inlet pipe extending to the root of the pump wheel teeth, gas entering the space between the pump wheel teeth from the air inlet, the air intake end of the air inlet pipe being higher than the highest water level set in the dishwasher; A first water inlet for supplying washing liquid to the vortex pump; A first water outlet for leading washing liquid out of the vortex pump.

2. A dishwasher comprising the bubble generating device for a dishwasher according to claim 1, characterized in that: Further comprising A liner, the liner comprising a second water inlet and a second water outlet, the second water inlet being in communication with the first water outlet; A drain unit, the drain unit being in communication with an external drain device; A first switching valve, the input end of the first switching valve being in communication with the second water outlet, the output end of the first switching valve being in communication with the first water inlet and / or the drain unit.

3. The dishwasher according to claim 2, characterized in that Further comprising A water inlet unit, the water inlet unit being in communication with an external water supply device; A second switching valve, the input end of the second switching valve being in communication with the water inlet unit, the output end of the second switching valve being in communication with the first water inlet and / or the second water inlet.

4. The dishwasher according to claim 2, characterized in that The dishwasher comprises a sink dishwasher.

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