Silencer and dust collector

Abstract

The application discloses a sound-absorbing part and a dust collector, which comprises a receiving cavity for receiving a motor, sound-absorbing side walls surrounding the receiving cavity and being arranged in at least two sections, a first guide piece extending from one end of the first sound-absorbing side wall and forming a first included angle, a second guide piece being spaced from the first guide piece and extending from the other end of the first sound-absorbing side wall and forming a second included angle, a third guide piece extending from one end of the second sound-absorbing side wall and forming a first included angle, and a sound-absorbing air outlet between the second guide piece and the third guide piece, wherein the airflow spirally moves outward from the sound-absorbing air outlet. The application keeps the air outlet smooth, reduces noise and has a simple structure.

Description

Technical Field

[0001] This invention belongs to the field of vacuum cleaners. Background Technology

[0002] Vacuum cleaners are used for indoor cleaning. They typically consist of a vacuum cleaner body, a motor located in the vacuum cleaner body, and a dust cup located upstream of the motor. The high-speed rotation of the motor sucks in debris, and then the dust and air are separated in the dust cup. However, the vibration of the motor and the movement of airflow generate noise, and how to reduce noise is a major technical challenge in the industry. Summary of the Invention

[0003] The purpose of this invention is to provide a noise reduction component and a vacuum cleaner that maintains smooth airflow, reduces noise, and has a simple structure.

[0004] The first technical solution of the present invention is: a noise reduction component, which is sleeved on the motor of a vacuum cleaner, comprising a receiving cavity for housing the motor, a noise reduction sidewall surrounding the receiving cavity and spaced apart into at least two segments, a first guide plate extending from one end of the first noise reduction sidewall and forming a first included angle, a second guide plate spaced apart from the first guide plate and extending from the other end of the first noise reduction sidewall and forming a second included angle, a third guide plate located at one end of the second noise reduction sidewall and forming the first included angle, and a noise reduction air outlet located between the second guide plate and the third guide plate, wherein the airflow exiting from the noise reduction air outlet moves outward in a spiral.

[0005] Based on the above technical solution, the following supplementary technical solutions are further included:

[0006] The third guide plate is the same as the first guide plate.

[0007] The first included angle is greater than the second included angle, and the first included angle is between 20 and 75 degrees, while the second included angle is between 10 and 60 degrees.

[0008] The second technical solution of the present invention is: a vacuum cleaner, comprising a body, a dust cup connected to the body, and a motor assembly connected to the body, wherein the motor assembly includes a motor housing, a motor housed within the motor housing, a silencing component sleeved on the outside of the motor, and a motor cover sleeved on the outside of the silencing component, wherein the silencing component includes a receiving cavity for housing the motor, a silencing sidewall surrounding the receiving cavity and spaced apart into at least two segments, a first guide plate extending from one end of the first silencing sidewall and forming a first included angle, a second guide plate spaced apart from the first guide plate and extending from the other end of the first silencing sidewall and forming a second included angle, a third guide plate extending from one end of the second silencing sidewall and forming a first included angle, and a silencing air outlet located between the second guide plate and the third guide plate, wherein the airflow exiting from the silencing air outlet moves outward in a spiral motion to achieve silencing and maintain smooth airflow.

[0009] The motor cover includes a motor cover cavity for housing the silencing component, an inner wall of the motor cover surrounding the motor cover cavity and having an inner air outlet, and an outer wall of the motor cover located outside the inner wall of the motor cover and having an outer air outlet. The inner air outlet of the motor cover is adjacent to the silencing air outlet, while the outer air outlet of the motor cover is closer to the dust cup relative to the inner air outlet of the motor cover, so as to achieve labyrinth silencing and simplify the silencing structure.

[0010] The motor assembly includes an air outlet mesh ring fitted onto the motor housing and located near the air outlet inside the motor cover but away from the air outlet outside the motor cover, in order to reduce the air outlet path.

[0011] The motor assembly includes a display screen located adjacent to the air outlet grille, allowing users to obtain relevant parameters and make timely adjustments.

[0012] The body includes a support part for supporting the dust cup, a handle connected at one end to the bottom end of the support part, and a support member that is spaced apart from the handle and connected at one end to the bottom end of the support part, so as to achieve a good grip for the user and conform to ergonomics.

[0013] It also includes a battery pack that connects to the other end of the handle and support to provide power.

[0014] The advantages of this invention are: it maintains smooth airflow, reduces noise, and has a simple structure. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a perspective view of the present invention;

[0017] Figure 2 This is a perspective view of the motor assembly in this invention;

[0018] Figure 3 This is an exploded view of the motor assembly in this invention;

[0019] Figure 4 This is a cross-sectional view of the motor assembly in this invention at a certain angle;

[0020] Figure 5 This is a cross-sectional view of the motor assembly in this invention from another angle;

[0021] Figure 6 This is a perspective view of the motor cover in this invention;

[0022] Figure 7 This is a perspective view of the noise-reducing component in this invention;

[0023] Figure 8 This is a structural diagram of the assembled silencing component and motor cover in this invention. Detailed Implementation

[0024] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0025] In the description of this invention, it should be understood that the terms "front", "rear", "left", "right", "upper", "lower", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0027] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0028] Example: Refer to Figures 1-3 As shown, and in combination Figure 7-8This invention discloses a first embodiment of a noise-reducing component for use in a vacuum cleaner. It includes a housing cavity 520 housing a motor 400, a noise-reducing sidewall 540 surrounding the housing cavity 520 and spaced apart into at least two segments, a first guide plate 542 extending from one end of the first noise-reducing sidewall 540 and forming a first included angle α, a second guide plate 544 spaced from the first guide plate 542 and extending from the other end of the first noise-reducing sidewall 540 and forming a second included angle b, a third guide plate extending from one end of the second noise-reducing sidewall 540 and forming the first included angle, and a noise-reducing air outlet 546 located between the second guide plate 544 and the third guide plate, wherein the airflow exiting from the noise-reducing air outlet 546 moves spirally outward. In this embodiment, the third guide plate and the first guide plate 542 are identical in structure, shape, and size. The first included angle α is greater than the second included angle b, and the first included angle α is between 20 and 75 degrees, while the second included angle b is between 10 and 60 degrees. There is one or more first guide plates 542, and the number of second guide plates 544 is equal to the sum of the number of first guide plates 542 and third guide plates. In this embodiment, the silencing sidewall 540 is arranged in three intervals, with two first guide plates 542, four second guide plates 544, and two third guide plates. The axial length of the first guide plate 542 is greater than 2 / 3 of the axial length of the motor 400 but less than 1 / 4 of the axial length of the motor 400. The axial lengths of the second guide plates 544 and the third guide plates are the same as the axial length of the first guide plate 542. At the same time, the axial length of the silencing air outlet 546 is less than 1 / 2 of the axial length of the first guide plate 542.

[0029] Similarly, based on the first embodiment, referring to Figures 1-8 As shown, the present invention further discloses a second embodiment of a vacuum cleaner, which includes a body 100, a dust cup 200 connected to the body 100, and a motor assembly 300 connected to the body 100. The motor assembly 300 includes a motor housing 310, a motor 400 housed in the motor housing 310, a muffler 500 sleeved on the outside of the motor 400, and a motor cover 600 sleeved on the outside of the muffler 500.

[0030] The body 100 includes a support portion supporting a dust cup 200, a handle 120 connected at one end to the bottom end of the support portion, and a support member 140 spaced apart from the handle 120 and connected at one end to the bottom end of the support portion. The extending direction of the handle 120 intersects the extending direction of the support portion at an angle of 95-115 degrees. This embodiment also includes a battery pack 440 connected to the other end of the handle 120 and the support member 140 and providing power to the motor 400. The battery pack 440 is preferably a lithium battery or a nickel-metal hydride battery pack.

[0031] The dust cup 200 includes a dust cup cavity located therein, a cyclone mesh assembly disposed within the dust cup cavity, and a secondary cyclone separator located downstream of the cyclone mesh assembly. The secondary cyclone separator is disposed adjacent to the motor assembly 300. In this embodiment, the central axis of the dust cup cavity is parallel to the horizontal direction and passes through the center of the motor 400, as well as the center of the silencer 500 and the motor cover 600.

[0032] The motor assembly 300 further includes an air outlet mesh ring 700 fitted onto the motor housing 310 and located near the inner air outlet 632 of the motor housing and away from the outer air outlet 642 of the motor housing, and a display screen 800 disposed adjacent to the air outlet mesh ring 700. The motor 400 is preferably a DC brushless or brushed motor with an axial length ranging from 50-70 mm and a diameter ranging from 35-55 mm. This embodiment further includes a motor support 420 supporting the motor 400. The axial length between the air outlet mesh ring 700 and the outer air outlet 642 of the motor housing is greater than the axial length between the inner air outlet 632 and the outer air outlet 642 of the motor housing to reduce noise and maintain product miniaturization.

[0033] refer to Figure 7-8As shown, the muffler 500 includes a receiving cavity 520 for housing the motor 400, a muffler sidewall 540 surrounding the receiving cavity 520 and spaced apart into at least two segments, a first guide plate 542 extending from one end of the first muffler sidewall 540 and forming a first included angle α, a second guide plate 544 spaced from the first guide plate 542 and extending from the other end of the first muffler sidewall 540 and forming a second included angle b, a third guide plate located at one end of the second muffler sidewall 540 and forming the first included angle α, and a third guide plate located at the second guide plate 544. The silencer outlet 546 between the second guide plate 44 and the third guide plate is defined by the silencer outlet wall 541 connected to the silencer sidewall 540. There is a step difference between the silencer sidewall 540 and the silencer outlet wall 541, and this step difference is equal to the axial length of the silencer outlet 546. This ensures that the outlet area of ​​the silencer outlet 546 is within a reasonable range; if it is too large, the airflow will be too slow and the airflow will be uneven, while if it is too small, high-frequency noise will result. The airflow exiting the silencer outlet 546 moves outward in a spiral motion to reduce noise. In this embodiment, the third guide plate and the first guide plate 542 are identical in structure, shape, and size. The second guide plate 544 can also be located at the other end of the second section of the silencer sidewall 540 and form a second included angle b. The first included angle a is greater than the second included angle b, and the first included angle a is between 20-75 degrees, while the second included angle b is between 10-60 degrees. There is one or more first guide plates 542, and the number of second guide plates 544 is equal to the sum of the number of first guide plates 542 and third guide plates. In this embodiment, the silencing sidewall 540 is arranged in three intervals, with two first guide plates 542, four second guide plates 544, and two third guide plates. The axial length of the first guide plate 542 is greater than 2 / 3 of the axial length of the motor 400 but less than 1 / 4 of the axial length of the motor 400. The axial lengths of the second guide plates 544 and the third guide plates are the same as the axial length of the first guide plate 542. At the same time, the axial length of the silencing air outlet 546 is less than 1 / 2 of the axial length of the first guide plate 542. The thickness of the first guide plate 542, the second guide plate 544, and the third guide plate is in the range of 1-2 mm, and in this embodiment, arc-shaped guide plates are preferred. The silencing component 500 has an axial length of 30-40mm and a diameter of 40-60mm for the receiving cavity 520, resulting in a simple and compact structure.

[0034] The motor cover 600 includes a motor cover cavity 620 housing the silencer 500, an inner wall 630 surrounding the motor cover cavity 620 and having an inner air outlet 632, and an outer wall 640 located outside the inner wall 630 and having an outer air outlet 642. The inner air outlet 632 is adjacent to the silencer outlet 546, while the outer air outlet 642 is closer to the dust cup 200 than the inner air outlet 632. The inner wall 630 abuts against a motor base 420 made of rubber. The motor cover 600 further includes a plurality of rectangular fixing bosses 602 disposed on the inner wall 630. After assembly, the fixing bosses 602 are located between the first guide plate 542 and the second guide plate 544 and abut against the silencer sidewall 540 to ensure the fixation between the silencer 500 and the motor cover 600 and prevent relative movement.

[0035] During operation, the airflow generated by the motor is guided by the spiral guide plate of the silencer 500. The airflow first moves towards the end of the motor 400, then orderly leaves the silencer outlet 546 and enters the outlet 632 inside the motor cover, reducing turbulence and high-frequency noise. Then it moves towards the top of the motor 400 and flows out through the outlet 642 outside the motor cover. Finally, it moves towards the end of the motor 400 and is discharged to the outside through the outlet mesh ring 700. This process involves multiple labyrinthine silencers, reducing the use of sound-absorbing cotton, maintaining smooth airflow, reducing noise, and simplifying the structure.

[0036] Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A vacuum cleaner characterised in that It includes: The machine body (100), the dust cup (200) connected to the machine body (100), and the motor assembly (300) connected to the machine body (100) are provided. The motor assembly (300) includes a motor housing (310), a motor (400) housed in the motor housing (310), a silencing component (500) sleeved on the outside of the motor (400), and a motor cover (600) sleeved on the outside of the silencing component (500). The silencing component (500) includes a housing cavity (520) housing the motor (400), a silencing sidewall (540) surrounding the housing cavity (520) and spaced at least in two segments, a first guide plate (542) extending from one end of the first silencing sidewall (540) and forming a first angle, and a second angle extending from the other end of the first silencing sidewall (540) and spaced from the first guide plate (542). The second guide plate (544), the third guide plate extending from one end of the second section of the silencing sidewall (540) and forming a first included angle, and the silencing air outlet (546) located between the second guide plate (544) and the third guide plate, wherein the airflow comes out of the silencing air outlet (546) in a spiral outward motion, the motor cover (600) includes a motor cover cavity (620) for accommodating the silencing component (500), an inner wall (630) surrounding the motor cover cavity (620) and having an inner air outlet (632) of the motor cover, and an outer wall (640) located outside the inner wall (630) of the motor cover and having an outer air outlet (642) of the motor cover, wherein the inner air outlet (632) of the motor cover is adjacent to the silencing air outlet (546), and the outer air outlet (642) of the motor cover is closer to the dust cup (200) relative to the inner air outlet (632) of the motor cover.

2. The dustsucker according to claim 1, characterized in that: The motor assembly (300) includes an air outlet mesh (700) that is fitted onto the motor housing (310) and is close to the air outlet (632) inside the motor cover and away from the air outlet (642) outside the motor cover.

3. The dustsweeper of claim 2, wherein: The motor assembly (300) includes a display screen (800) disposed adjacent to the air outlet mesh (700).

4. The dust cup according to claim 1, wherein: The body (100) includes a support part for supporting the dust cup (200), a handle (120) with one end connected to the bottom end of the support part, and a support member (140) that is spaced apart from the handle (120) and has one end connected to the bottom end of the support part.

5. The dust cup according to claim 4, wherein It also includes a battery pack (440) connected to the other end of the handle (120) and support (140).

6. The dust cup according to claim 1, wherein: The third guide piece is the same as the first guide piece (542).

7. The dust cup according to claim 1, wherein: The first included angle is greater than the second included angle, and the first included angle is between 20 and 75 degrees, while the second included angle is between 10 and 60 degrees.

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