Cleaning and spraying device based on planetary transmission

Abstract

The invention relates to the field of household appliances, in particular to a cleaning spraying device based on planetary transmission, which comprises a cleaning cabin, a first spraying device is arranged on the inner surface of the cleaning cabin, the cleaning cabin comprises a first shell, a first center motor is fixed in the middle of the first shell and used for driving the first spraying device to rotate, and the output end of the first center motor is fixedly connected with the inner wall of the cleaning cabin; an output shaft of the first shell is connected with a flange, the flange is connected with the inner surface of the cleaning cabin, a first spraying motor is fixedly arranged at the edge of the first shell, an output shaft of the first shell is in transmission connection with one end of a spraying arm and used for driving the spraying arm to rotate around the end, and the end, away from the first spraying motor, of the spraying arm is connected with a first spraying head. According to the scheme, the technical problems that in the prior art, a spraying device is small in water flow coverage range and low in cleaning efficiency are solved.

Description

Technical Field

[0001] The present invention relates to the field of household appliances, and in particular to a cleaning spray device based on planetary transmission. Background Art

[0002] A dishwasher is a device that automatically washes tableware such as bowls, chopsticks, plates, dishes, knives, forks, and other tableware. Fully automatic dishwashers on the market can be divided into two categories: home and commercial. Home fully automatic dishwashers are only suitable for households and are mainly available in cabinet, countertop, sink-integrated, and integrated models.

[0003] In cleaning equipment, the spray device is the primary cleaning component. The rotating axis of the rotating spray arm is driven by a motion system or power unit, spraying cleaning water to achieve cleaning. In existing technologies, the spray arm uses water pressure to cause the rotating spray arm to rotate randomly. The nozzle uses a linear water jet to spray water onto the surface of the object to be cleaned. Over time, the water reaches full coverage and completes the cleaning operation. However, the water flow coverage of the spray devices provided in existing technologies is limited, resulting in low cleaning efficiency. Summary of the Invention

[0004] In view of this, the present invention provides a method for at least partially solving the problem in the prior art that the water flow coverage of the spray device is small and the cleaning efficiency is low.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] A cleaning spray device based on planetary transmission comprises: a cleaning cabin (1), a first spray device (2) is provided on the inner surface of the cleaning cabin (1), the first spray device (2) comprises a first shell (22), a first central motor (21) is used to drive the first spray device to rotate, a fixing member of the first central motor (21) is fixed to the middle of the first shell (22), an output end of the first central motor (21) is fixedly connected to the inner wall of the cleaning cabin (1), an output shaft of the first central motor (21) is connected to a flange, and the flange is connected to the inner surface of the cleaning cabin (1), a first spray motor (24) is fixedly provided at the edge of the first shell (22), the output shaft of the first spray motor (24) is transmission-connected to one end of a spray arm (25), and is used to drive the spray arm to rotate around the end, and the end of the spray arm (25) away from the first spray motor (24) is connected to a first nozzle (26).

[0007] In one embodiment, the inner surface of the cleaning chamber (1) is provided with a second spray device (3), and the second spray device (3) and the first spray device (2) are respectively provided on two opposite inner surfaces of the cleaning chamber (1).

[0008] Preferably, a first flow guide arm (27) is provided inside the first shell (22), a first flow channel is provided in the first flow guide arm (27), a liquid flow channel is provided in the spray arm (25), the first flow channel of the first flow guide arm (27) and the liquid flow channel of the spray arm (25) are connected through a first rotary joint, and the liquid flow channel of the spray arm (25) is connected to the water outlet of the first nozzle (26).

[0009] Preferably, the first shell (22) and the first flow guide arm (27) are integrally arranged, the first shell (22) and the first flow guide arm (27) are integrally arranged, the first flow channel in the first flow guide arm (27) extends to the center of the first shell (22) to form a first axial flow channel passing through the output shaft of the first central motor (21), one end of the first axial flow channel is connected to the third rotary joint, and the third rotary joint is connected to the water inlet through a hose.

[0010] Preferably, the first spray device (2) further comprises a first water supply pipeline, one end of the first water supply pipeline is connected to the first flow channel of the first guide arm (27), the first central motor (21) is a hollow motor, the transmission part of the first central motor (21) is a hollow gear or bearing, the first water supply pipeline passes through the hollow shaft of the first central motor (21), and the other end is connected to the water inlet.

[0011] Preferably, the distance between the output shaft of the first central motor (21) and the output shaft of the first spray motor (24) is 65 mm to 95 mm, and the distance between the output shaft of the first spray motor (24) and the center of the first spray head (26) is 55 mm to 85 mm.

[0012] Preferably, the second spray device (3) includes a second shell, a second central motor for driving the second spray device to rotate, a fixing part of the second central motor is fixed to the middle of the second shell, an output end of the second central motor is fixedly connected to the inner wall of the cleaning chamber (1), an output shaft of the second central motor is fixedly connected to a flange and the flange is connected to the inner surface of the cleaning chamber (1), a second spray motor is provided at the edge of the second shell, the output shaft of the second spray motor is transmission-connected to the second nozzle, for driving the second nozzle to rotate, a second guide arm is provided in the second shell, a second flow channel is provided in the second guide arm, and the second nozzle is connected to the second flow channel through a second rotary joint.

[0013] One preferred embodiment is that the second guide arm and the second shell are integrally arranged or independently arranged. When integrally arranged, the second flow channel of the second guide arm extends to the center of the second shell to form a second axial flow channel passing through the output shaft of the second central motor, and one end of the second axial flow channel is connected to the fourth rotary joint, and the fourth rotary joint is connected to the water inlet through a hose; when independently arranged, the second flow channel of the second guide arm is connected to one end of the second water supply pipeline, the second central motor is a hollow motor, and the transmission part of the second central motor is a hollow gear or bearing. The second water supply pipeline passes through the hollow shaft of the second central motor, and the other end is connected to the water inlet.

[0014] Preferably, the second nozzle is provided with a connecting rod section (51), the connecting rod section (51) is connected to the second flow channel through a second rotary joint, the outer arc surface of the connecting rod section (51) is provided with a pressing plate (52), the outer end of the rod section (51) is fixedly connected to a mounting head (53), a latch (54) is slidably connected in a gap between the mounting head (53) and the pressing plate (52), and the outer end of the mounting head (53) is fixedly connected to a nozzle (55).

[0015] In a preferred embodiment, a first sealing ring is provided in the second rotary joint connected to the connecting rod section (51), and the pressing piece (52) and the first sealing ring are in the same plane.

[0016] Preferably, the angle between the water outlet direction axis of the water outlet on the first nozzle (26) and the rotation center axis of the spray arm is 0° to 15°, and the angle between the water outlet direction axis of the water outlet on the second nozzle and the rotation center axis of the second nozzle is 37° to 57°.

[0017] Preferably, the water sprayed from the water outlet of the first nozzle (26) or the second nozzle is fan-shaped and the fan-shaped angle is 65° to 85°.

[0018] Preferably, the total projection area of the water outlet shapes of all nozzles on a plane perpendicular to the axis of the water outlet direction is less than or equal to 3 square millimeters.

[0019] Preferably, the distance between the output shaft of the second central motor and the rotation center of the second nozzle is 65 mm to 95 mm.

[0020] The beneficial effects are:

[0021] 1. The present invention provides driving force for the spray arm through two driving components, so that the first spray device can realize a combination of rotation and revolution. Under one cycle of rotation, the first nozzle is allowed to rotate flexibly within a certain angle range, which can achieve a larger coverage area and significantly improve the cleaning efficiency through large-scale cleaning coverage, solving the technical problems of the spray device in the prior art with a small water flow coverage range and low cleaning efficiency.

[0022] 2. The present invention has a hollow structure through the first central motor, and the liquid flow channel of the spray mechanism passes through the hollow structure, thereby avoiding leakage under high-pressure conditions through the sealed water channel, thereby increasing the water outlet pressure of the equipment, improving the structural compactness of the equipment, and improving the cleaning effect.

[0023] 3. The present invention improves the cleaning efficiency by spraying and cleaning the front and back sides of the tableware simultaneously through the front and back spray devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a schematic diagram of the overall bottom-up structure of the present invention;

[0027] Figure 3 Schematic diagram of the overall structure of the first spray device of the present invention;

[0028] Figure 4 is a schematic cross-sectional view of a first spray device of the present invention;

[0029] Figure 5 is a schematic cross-sectional view of a second spray device of the present invention;

[0030] Figure 6 It is a schematic diagram of the overall structure of the nozzle of the present invention.

[0031] Among them, the accompanying drawings are marked as follows:

[0032] 1. Cleaning cabin; 2. First spray device; 21. First central motor; 22. First shell; 24. First spray motor; 25. Spray arm; 26. First nozzle; 27. Guide arm; 3. Second spray device; 51. Rod section; 52. Pressing piece; 53. Mounting head; 54. Pin; 55. Nozzle. DETAILED DESCRIPTION

[0033] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0034] It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments may be combined with each other; and, based on the embodiments in this disclosure, all other embodiments obtained by persons of ordinary skill in the art without creative work are within the scope of protection of this disclosure.

[0035] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on this disclosure, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number of aspects described herein can be used to implement an apparatus and / or practice a method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this apparatus and / or practice this method.

[0036] Example 1

[0037] Please refer to Figure 1 - Figure 6, a cleaning spray device based on planetary transmission, comprising: a cleaning cabin 1, a first spray device 2 is provided on the inner surface of the cleaning cabin 1, the first spray device 2 includes a first shell 22, a first central motor 21 is used to drive the first spray device to rotate, the fixing part of the first central motor 21 is fixed to the middle of the first shell 22, the output end of the first central motor 21 is fixedly connected to the inner wall of the cleaning cabin 1, the output shaft of the first central motor 21 is connected with a flange and the flange is connected to the inner surface of the cleaning cabin 1, a first spray motor 24 is fixedly provided at the edge of the first shell 22, the output shaft of the first spray motor 24 is fixedly connected to a spray arm 25, and the end of the spray arm 25 away from the first spray motor 24 is connected to a first nozzle 26, a second spray device 3 is provided on the inner surface of the cleaning cabin 1, and the second spray device 3 and the first spray device 2 are respectively provided on two opposite inner surfaces of the cleaning cabin 1. A guide arm 27 is provided inside the first shell 22. The first shell 22 and the guide arm 27 are preferably provided as an integral whole, but an optional solution also includes independently providing a guide arm in the first shell. A first flow channel is provided in the guide arm 27, and a liquid flow channel is provided in the spray arm 25. The first flow channel of the guide arm 27 is connected to the liquid flow channel of the spray arm 25 through a first rotary joint, and the liquid flow channel of the spray arm 25 is connected to the water outlet of the first nozzle 26. The first flow channel in the first guide arm extends to the center of the first shell to form a first axial flow channel passing through the output shaft of the first central motor. One end of the first axial flow channel is connected to the third rotary joint, and the third rotary joint is connected to the water inlet through a hose. In another optional solution, the first spray device 2 further includes a first water supply pipeline, one end of the first water supply pipeline is connected to the water pump, and the other end of the first water supply pipeline is connected to the first flow channel of the guide arm 27. The first central motor 21 is a hollow motor, and the transmission member of the first central motor 21 is a hollow gear or bearing. The first water supply pipeline passes through the hollow shaft of the first central motor 21 and is connected to the first flow channel of the guide arm 27; that is, the first central motor 21 has a hollow structure, and the first water supply pipeline passes through the hollow structure, thereby sealing the water channel to avoid leakage under high-pressure conditions, thereby improving the performance of the equipment, and the liquid flow channel It is integrated in the first central motor 21, which improves the structural compactness of the equipment. A first flow channel is opened in the guide arm 27, and the end of the spray arm 25 is connected to the guide arm 27 through a rotary joint. A liquid flow channel is opened in the spray arm 25, and the first flow channel of the guide arm 27 is connected to the liquid flow channel of the spray arm 25. That is to say, the nozzle at the end of the spray arm is connected with the flow channel opened on the guide arm 27 through the flow channel opened in the spray arm 25, and then passes through the first shaft flow channel located on the output shaft of the first central motor or the first water supply pipeline passing through the hollow shaft and is finally connected to the gas-liquid supply source, together constituting a channel for the liquid and / or gas used for spraying to flow through.When liquid and / or gas flows through such a passage into the first nozzle 26 and is sprayed out, full use is made of the internal water flow of the guide arm and the spray arm, and leakage of cleaning gas and liquid can be avoided without the need for a complex sealing structure, thereby ensuring the water outlet pressure. The liquid flow channel of the spray arm 25 is connected to the water outlet of the first nozzle 26.

[0038] The second spray device 3 includes a second shell, a second central motor for driving the second spray device to rotate, a fixing part of the second central motor is fixed to the middle of the second shell, the output end of the second central motor is fixedly connected to the inner wall of the cleaning cabin 1, the output shaft of the second central motor is fixedly connected to a flange, a second nozzle is provided at the edge of the second shell, and the second spray motor is used to drive the second nozzle to rotate; the water outlet direction axis of the water outlet on the first nozzle 26 and the rotation center axis of the spray arm are at an angle of 0° to 15°, and the water outlet direction axis of the water outlet on the second nozzle and the rotation center axis of the second nozzle are at an angle of 37° to 57°; the water sprayed from the water outlet of the first nozzle 26 or the second nozzle is fan-shaped and the fan angle is 65° to 85°; all nozzles The sum of the projections of the water outlet shape on a plane perpendicular to the water outlet axis is less than or equal to 3 square millimeters; the first and second spray modules are placed on two opposite surfaces in the cleaning chamber, preferably moving around two coaxial rotation center axes, and the front and rear spray modules rotate around their respective rotation centers, respectively, providing two independent rotational degrees of freedom that can be actively controlled. The connection between the two spray modules in the cleaning chamber needs to ensure that the distance between the motion planes of the two nozzles placed on the two spray modules is 152±25mm. At the same time, the distance between the output shaft of the first central motor 21 and the output shaft of the first spray motor 24 is 65mm to 95mm, and the distance between the output shaft of the first spray motor 24 and the center of the first nozzle 26 is 55mm to 85mm. The distance between the output shaft of the second central motor and the rotation center of the second nozzle is 65mm to 95mm.

[0039] The second guide arm and the second shell are integrally arranged or independently arranged. When integrally arranged, the second flow channel of the second guide arm extends to the center of the second shell to form a second axial flow channel passing through the output shaft of the second central motor. One end of the second axial flow channel is connected to the fourth rotary joint, and the fourth rotary joint is connected to the water inlet through a hose; when independently arranged, the second flow channel of the second guide arm is connected to one end of the second water supply pipeline, the second central motor is a hollow motor, and the transmission part of the second central motor is a hollow gear or bearing. The second water supply pipeline passes through the hollow shaft of the second central motor, and the other end is connected to the water inlet.

[0040] The second nozzle includes a connecting rod section 51, which is connected to the second flow channel of the second guide arm in the second spray device through a second rotary joint. A pressure plate 52 is provided on the outer arc surface of the connecting rod section 51. A mounting head 53 is fixedly connected to the outer end of the connecting rod section 51. A latch 54 is slidably connected in the gap between the mounting head 53 and the pressure plate 52. A nozzle 55 is fixedly connected to the outer end of the mounting head 53. A first sealing ring is provided in the second rotary joint connected to the connecting rod section 51, and the pressure plate 52 and the first sealing ring are in the same plane. In the first spray device, a connecting rod section is also provided at the connection between the first guide arm and the spray arm, and the first flow channel of the first guide arm is connected to the liquid flow channel of the spray arm through the first rotary joint. Corresponding components such as a pressure plate, a mounting head, a latch, and a sealing ring are also provided. Since the structures of the two are basically the same, they will not be described in detail.

[0041] Working Principle: In the first spray device, the first central motor drives the first housing 22 to rotate, and at the same time drives the first spray motor 24, spray arm 25, and first nozzle 26 mounted on the first housing 22 to rotate. At the same time, the first spray motor 24 starts to drive the spray arm 25 and first nozzle 26 connected to it to rotate. The two drive components provide driving force for the spray arm 25, so that the first spray device 2 can achieve a combination of rotation and revolution. In one cycle of rotation, it can achieve a larger coverage area and significantly improve cleaning efficiency by cleaning a large area. At the same time, the water flow can pass through the guide arm and the rotary joint and finally reach the nozzle 55, allowing the nozzle to flexibly rotate within a certain angle range, thereby increasing the spray coverage area. At the same time, the second spray device sprays and cleans from the other side, which can improve cleaning efficiency and effect.

[0042] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A cleaning spray device based on planetary transmission, comprising: A cleaning cabin (1), characterized in that: a first spray device (2) is provided on the inner surface of the cleaning cabin (1), the first spray device (2) includes a first shell (22), a first central motor (21) is used to drive the first spray device to rotate, a fixing member of the first central motor (21) is fixed to the middle of the first shell (22), an output end of the first central motor (21) is fixedly connected to the inner wall of the cleaning cabin (1), an output shaft of the first central motor (21) is connected to a flange and the flange is connected to the inner surface of the cleaning cabin (1), a first spray motor (24) is fixedly provided at the edge of the first shell (22), the output shaft of the first spray motor (24) is transmission-connected to one end of a spray arm (25) for driving the spray arm to rotate around the end, and the end of the spray arm (25) away from the first spray motor (24) is connected to a first nozzle (26).

2. A cleaning spray device based on planetary transmission according to claim 1, characterized in that: The inner surface of the cleaning chamber (1) is provided with a second spray device (3), and the second spray device (3) and the first spray device (2) are respectively provided on two opposite inner surfaces of the cleaning chamber (1).

3. The cleaning spray device based on planetary transmission according to claim 1, characterized in that: A first flow guide arm (27) is provided inside the first shell (22), a first flow channel is provided in the first flow guide arm (27), a liquid flow channel is provided in the spray arm (25), the first flow channel of the first flow guide arm (27) and the liquid flow channel of the spray arm (25) are connected through a first rotary joint, and the liquid flow channel of the spray arm (25) is connected to the water outlet of the first nozzle (26).

4. A cleaning spray device based on planetary transmission according to claim 3, characterized in that: The first flow channel in the first flow guide arm (27) extends to the center of the first shell (22) to form a first shaft flow channel passing through the output shaft of the first central motor (21); one end of the first shaft flow channel is connected to a third rotary joint, and the third rotary joint is connected to the water inlet through a hose.

5. The cleaning spray device based on planetary transmission according to claim 3, characterized in that: The first spray device (2) further comprises a first water supply pipeline, one end of which is connected to the first flow channel of the first guide arm (27), the first central motor (21) is a hollow motor, the transmission member of the first central motor (21) is a hollow gear or bearing, the first water supply pipeline passes through the hollow shaft of the first central motor (21), and the other end is connected to the water inlet.

6. The cleaning spray device based on planetary transmission according to claim 1, characterized in that: The distance between the output shaft of the first central motor (21) and the output shaft of the first spray motor (24) is 65 mm to 95 mm, and the distance between the output shaft of the first spray motor (24) and the center of the first spray head (26) is 55 mm to 85 mm.

7. The cleaning spray device based on planetary transmission according to claim 2, characterized in that: The second spray device (3) includes a second shell, a second central motor for driving the second spray device to rotate, a fixing part of the second central motor is fixed to the middle of the second shell, an output end of the second central motor is fixedly connected to the inner wall of the cleaning chamber (1), an output shaft of the second central motor is fixedly connected to a flange and the flange is connected to the inner surface of the cleaning chamber (1), a second spray motor is provided at the edge of the second shell, the output shaft of the second spray motor is connected to the second nozzle for driving the second nozzle to rotate, a second guide arm is provided in the second shell, a second flow channel is provided in the second guide arm, and the second nozzle is connected to the second flow channel through a second rotary joint.

8. The cleaning spray device based on planetary transmission according to claim 7, characterized in that: The second flow guide arm is integrally arranged with the second shell or independently arranged. When integrally arranged, the second flow channel of the second flow guide arm extends to the center of the second shell to form a second axial flow channel passing through the output shaft of the second central motor. One end of the second axial flow channel is connected to the fourth rotary joint, and the fourth rotary joint is connected to the water inlet through a hose; when independently arranged, the second flow channel of the second flow guide arm is connected to one end of the second water supply pipeline, the second central motor is a hollow motor, and the transmission part of the second central motor is a hollow gear or bearing. The second water supply pipeline passes through the hollow shaft of the second central motor, and the other end is connected to the water inlet.

9. The cleaning spray device based on planetary transmission according to claim 7, characterized in that: The second nozzle is provided with a connecting rod section (51), the second nozzle is connected to the second flow channel through a second rotary joint, the outer arc surface of the connecting rod section (51) is provided with a pressing plate (52), the outer end of the rod section (51) is fixedly connected to a mounting head (53), a latch (54) is slidably connected in a gap between the mounting head (53) and the pressing plate (52), and the outer end of the mounting head (53) is fixedly connected to a nozzle (55).

10. The cleaning spray device based on planetary transmission according to claim 9, characterized in that: A first sealing ring is provided in the second rotary joint connected to the connecting rod section (51), and the pressing piece (52) and the first sealing ring are located in the same plane.

11. The cleaning spray device based on planetary transmission according to claim 7, characterized in that: The angle between the water outlet direction axis of the water outlet on the first nozzle (26) and the rotation center axis of the spray arm is 0° to 15°, and the angle between the water outlet direction axis of the water outlet on the second nozzle and the rotation center axis of the second nozzle is 37° to 57°.

12. A cleaning spray device based on planetary transmission according to claim 11, characterized in that: The water sprayed from the water outlet of the first nozzle (26) or the second nozzle is fan-shaped and the fan-shaped angle is 65° to 85°.

13. The cleaning spray device based on planetary transmission according to claim 11, characterized in that: The total projection area of the water outlet shapes of all nozzles on the plane perpendicular to the axis of the water outlet direction is less than or equal to 3 square millimeters.

14. The cleaning spray device based on planetary transmission according to claim 7, characterized in that: The distance between the output shaft of the second central motor and the rotation center of the second nozzle is 65 mm to 95 mm.

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