Flow guide cover and dust collector

Abstract

The utility model provides a flow guide cover and a dust collector, the flow guide cover is used for covering the air outlet side of a motor assembly of the dust collector, and the flow guide cover comprises a fixing part and a flow guide part. The fixing part is provided with a first end and a second end which are oppositely arranged, the first end is provided with a first opening, the second end is provided with a second opening, and the first opening is used for sleeving the air outlet side of the motor assembly; the flow guide part is connected with the second end of the fixing part and covers the second opening, the flow guide part extends from the second end to the side away from the first end, and the side wall of the flow guide part is obliquely arranged towards the center axis of the flow guide part. According to the dust collector, the necking-down-shaped flow guide cover is arranged on the motor assembly of the dust collector, the air flowing direction of the air outlet side of the motor assembly is controlled, scattered and disordered air is collected, the air flow field is optimized, airflow loss is avoided, and on the basis of constant power, it is guaranteed that the efficiency of the motor assembly is not reduced, and meanwhile noise of the motor assembly is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of household appliances, and in particular to a deflector cover and a vacuum cleaner. Background Art

[0002] As the core component of a vacuum cleaner, the noise level of the series-excited motor directly affects the user experience of the vacuum cleaner. How to reduce motor noise has become an urgent problem that needs to be solved. Utility Model Content

[0003] In view of this, the present application provides a deflector and a vacuum cleaner to solve the problem of high noise of motor components in the prior art.

[0004] In order to solve the above technical problems, a technical solution adopted by the present application is: to provide a deflector, which is used to cover the air outlet side of the motor assembly of the vacuum cleaner, and the deflector includes a fixed part and a deflector. The fixed part has a first end and a second end that are arranged opposite to each other, the first end has a first opening, and the second end has a second opening, and the first opening is used to be sleeved on the air outlet side of the motor assembly of the vacuum cleaner; the deflector is connected to the second end of the fixed part and is covered in the second opening, the deflector is extended from the second end to a side away from the first end, and the side wall of the deflector is inclined toward the central axis of the deflector.

[0005] According to one embodiment of the present application, the inclination angle of the side wall toward the central axis is 50 degrees to 70 degrees.

[0006] According to one embodiment of the present application, the side wall includes an inner wall and an outer wall, the inner wall is connected to a first position of the fixing portion, the outer wall is connected to a second position of the fixing portion, and the distance between the first position and the second position is less than or equal to the thickness of the fixing portion.

[0007] According to one embodiment of the present application, the distance between the first position and the second position is 0.6 mm to 2 mm, the distance from the first end to the second end is 3 mm to 6.5 mm, and the thickness of the fixing portion is 0.6 mm to 3 mm.

[0008] According to one embodiment of the present application, the fixing portion and the guide portion are of integrated design.

[0009] Another technical solution adopted in the present application is: to provide a vacuum cleaner, the vacuum cleaner comprising: a motor assembly, used for sucking or exhausting air; a support member, arranged on the air inlet side of the motor assembly; a wind hood, sleeved on the outer wall of the support member; and a guide hood as described in any of the above items, the guide hood being sleeved on the air outlet side of the motor assembly.

[0010] According to one embodiment of the present application, the fixing portion of the air deflector is sleeved on the outer wall of the support member and connected to the wind cover; the air deflector portion of the air deflector covers at least a portion of the motor assembly.

[0011] According to one embodiment of the present application, the fixing portion of the air deflector is sleeved on the outer wall of the support and connected to the wind hood in the following manner: the air deflector and the wind hood are connected sequentially on the outer wall of the support; or, the air deflector and the wind hood are connected partially overlappingly on the outer wall of the support.

[0012] According to one embodiment of the present application, the motor assembly includes: an iron core and a carbon brush. The carbon brush is arranged at one end of the iron core away from the support member; wherein the air guide cover is provided with the iron core, and there is a gap between the air guide cover and the carbon brush; and the gap between the air cover, the air guide cover and the iron core forms an air duct.

[0013] According to one embodiment of the present application, an air outlet is formed at one end of the air guide portion away from the second opening, and a distance from the air outlet to the second opening is less than or equal to an axial length of the iron core.

[0014] The beneficial effect of the present application is to provide a deflector, which includes a deflector portion, and the side wall of the deflector portion is inclined toward the central axis of the deflector portion. This design method forms a constricted deflector. When the deflector is mounted on the air outlet side of the motor assembly, the air flow field on the air outlet side can be optimized, and the efficiency of the motor assembly is ensured not to be reduced on the basis of constant power, while having a certain noise reduction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0016] Figure 1 It is a structural schematic diagram of an embodiment of a motor assembly of the present application;

[0017] Figure 2 This is a structural schematic diagram of an embodiment of the present application in which the motor assembly is used in conjunction with a deflector cover;

[0018] Figure 3 It is a structural schematic diagram of an embodiment of a fixing part of a shroud of the present application;

[0019] Figure 4 It is a structural schematic diagram of an embodiment of a deflector cover of the present application;

[0020] Figure 5 It is a structural schematic diagram of an embodiment of a deflector cover of the present application. DETAILED DESCRIPTION

[0021] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. It is to be understood that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should also be noted that, for ease of description, only some structures related to the present application are shown in the accompanying drawings, rather than all structures. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0022] The terms "first", "second", "third" in this application are only used for descriptive purposes and cannot be understood as indicating the quantity of the indicated technical features. Thus, the features defined as "first", "second", "third" can expressly or implicitly include at least one of these features. In the embodiments of the present application, all directional indications (such as up, down, left, right, front, back ...) are only used to explain the relative positional relationship, motion conditions, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly. In addition, the terms "include" and "have" and any of their variations are intended to cover non-exclusive inclusions. The process, method, system, product or equipment such as including a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or equipment.

[0023] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0024] Series motors are widely used in horizontal vacuum cleaners, and they have the characteristics of high power and strong suction. However, due to the maximum flow velocity of 0.7 Ma at the outer diameter of the impeller of a single motor, and the complex flow field structure, a lot of noise is generated. It is not difficult to simply reduce noise by taking relevant measures, but reducing noise is often accompanied by reducing efficiency. Therefore, it is an important issue to ensure that the motor efficiency does not decrease on the basis of constant power while reducing the motor noise.

[0025] In view of this, the present application provides a deflector 100, referring to Figure 2 , Figure 3 , Figure 4 and Figure 5The air guide cover 100 is used to cover the air outlet side of the motor assembly 200 of the vacuum cleaner, and the air guide cover 100 includes a fixing portion 101 and an air guide portion 102. The fixing portion 101 has a first end a and a second end b that are arranged opposite to each other, the first end a has a first opening 1011, and the second end b has a second opening 1012, and the first opening 1011 is used to be sleeved on the air outlet side of the motor assembly 200 of the vacuum cleaner; the air guide portion 102 is connected to the second end b of the fixing portion 101 and is covered in the second opening 1012, and the air guide portion 102 is extended from the second end b to a side away from the first end a, and the side wall 1021 of the air guide portion 102 is inclined toward the central axis of the air guide portion 102.

[0026] Specifically, refer to Figure 1 The motor assembly 200 includes a centrifugal impeller 201. After the motor assembly 200 is powered on, the centrifugal impeller 201 rotates to generate a certain suction force. Air enters the motor assembly 200 from one side of the wind cover 202, flows through the internal space of the wind cover 202, and is discharged from the other side of the wind cover 202. In this case, an air duct is formed inside the wind cover 202, the air duct distance is short, and the air flow field at the air outlet end is not optimized and the flow direction is not controlled, resulting in a chaotic wind direction, causing a certain loss of flow energy and reducing suction. At the same time, the chaotic wind causes a lot of noise.

[0027] Therefore, in order to gather the scattered wind and reduce the noise to a certain extent, the embodiment of the present application sets a deflector 100 on the air outlet side of the motor assembly 200 (i.e., the air outlet side of the wind cover 202). The deflector 100 includes a fixed portion 101 and a deflector 102. The fixed portion 101 has a first end a and a second end b that are relatively arranged, the first end a forms a first opening 1011, and the second end b forms a second opening 1012. The deflector 100 is mounted on the motor assembly 200 through the first opening 1011. The second opening 1012 is connected to the deflector 102. The side wall 1021 of the deflector 102 is extended in a direction away from the fixed portion 101, and the end of the side wall 1021 away from the fixed portion 101 is inclined toward the central axis of the deflector 102, with reference to FIG. Figure 4 and Figure 5, wherein the dotted line represents the center axis. In other words, the air deflector 100 is designed in a constricted shape. When the constricted air deflector 100 is installed on the air outlet side of the motor assembly 200, on the one hand, it blocks part of the noise from leaking outward and reduces the noise. On the other hand, it can also play the role of air diversion, control the direction of air flow, and gather the scattered and chaotic air to optimize the air flow field at the outlet end of the motor assembly 200, avoid air flow loss, and ensure that the efficiency of the motor assembly 200 is not reduced on the basis of constant power; the air deflector 100 and the wind cover 202 together form an air duct, which extends the air duct to a certain extent. The air flow field after the diversion optimization further reduces the noise, so that the noise reduction effect of the motor assembly 200 after the air deflector 100 is set is very obvious. According to the Environmental Noise Measurement Specifications, noise tests were conducted on the motor assembly 200 without the air deflector 100 and the motor assembly 200 with the air deflector 100. Under the same power, it was found that the motor assembly 200 with the air deflector 100 had a noise reduction effect of 3dB to 5dB, and the noise reduction effect was very obvious.

[0028] According to one embodiment of the present application, referring to Figure 5 , the inclination angle α of the side wall 1021 of the air guide portion 102 toward the central axis is 50 to 70 degrees. Preferably 65 degrees. The inclination angle within this range can enable the air guide cover 100 to collect and receive sound without affecting the operation of other components disposed inside the air guide cover 100. If the inclination angle α is too large, it will not collect and receive sound; if the inclination angle α is too small, it will abut against other components disposed inside the air guide cover 100, or reduce the gap between other components, affecting the normal operation of the motor assembly 200. The inclination angle α of the embodiment of the present application can be 50 degrees, 51 degrees, 55 degrees, 60 degrees, 63 degrees, 65 degrees, 68 degrees, 70 degrees, or a range consisting of any two of the above values, for example, it can be 50 to 60 degrees, 60 to 70 degrees, 55 to 63 degrees, 51 to 70 degrees, etc.

[0029] According to one embodiment of the present application, referring to Figure 5 The side wall 1021 includes an inner wall 1021a and an outer wall 1021b, the inner wall 1021a is connected to a first position 1022 of the fixing portion 101, and the outer wall 1021b is connected to a second position 1023 of the fixing portion 101, and the distance between the first position 1022 and the second position 1023 is less than or equal to the thickness of the fixing portion 101.

[0030] Specifically, the first opening 1011 formed by the first end a of the fixing part 101 is sleeved on the motor assembly 200, and is designed to be annular according to the relevant structure of the sleeve, and the annular ring has an inner diameter and an outer diameter, and the difference between the inner and outer diameters is the thickness of the fixing part 101. The side wall 1021 of the guide part 102 also has a thickness, and the side wall 1021 is divided into an inner wall 1021a and an outer wall 1021b, and the inner wall 1021a and the outer wall 1021b are respectively connected to the fixing part 101 at a first position 1022 and a second position 1023, and the distance between the first position 1022 and the second position 1023 is less than the thickness of the fixing part 101, or the distance between the first position 1022 and the second position 1023 is equal to the thickness of the fixing part 101. Among them, the thickness of the side wall 1021 can be equal to the thickness of the fixing part 101, and can also be less than the thickness of the fixing part 101. When the thickness of the side wall 1021 is less than the thickness of the fixing portion 101 , cost can be saved to a certain extent and material loss can be reduced. It should be noted that the distance between the first position 1022 and the second position 1023 does not represent the thickness of the side wall 1021 .

[0031] According to an embodiment of the present application, the distance between the first position 1022 and the second position 1023 is 0.6 mm to 2 mm. Within this range, the side wall 1021 has a certain strength and can also block the noise of the internal components. The distance between the first position 1022 and the second position 1023 can be 0.6 mm, 0.95 mm, 1.2 mm, 1.5 mm, 1.65 mm, 1.8 mm, 2.0 mm, etc., or a range consisting of any two of the above values, for example, 0.6 mm to 1.2 mm, 1.2 mm to 1.65 mm, 1.65 mm to 2.0 mm, 0.95 mm to 1.8 mm, etc.

[0032] The thickness of the fixing portion 101 is 0.6mm to 3mm. The thickness of the fixing portion 101 within this range has a certain strength, so that it is more stable when it is sleeved on the motor assembly 200. The thickness of the fixing portion 101 can be 0.6mm, 0.85mm, 1.3mm, 1.6mm, 1.85mm, 1.8mm, 2.0mm, 2.4mm, 2.5mm, 2.8mm, 3mm, etc., or a range composed of any two of the above values, for example, it can be 0.6mm to 1.6mm, 1.6mm to 2.4mm, 2.4mm to 3mm, 2.0mm to 2.8mm, etc. In one embodiment, the fixing portion 101 is designed as a circular ring, the outer diameter of the ring is 113mm, the inner diameter of the ring is 110.3mm, and the thickness of the fixing portion 101 is 2.7mm.

[0033] The distance between the first end a and the second end b of the fixing part 101 is 3mm to 6.5mm, that is, the distance between the first opening 1011 and the second opening 1012 is 3mm to 6.5mm. The distance within this range can make the fixing part 101 more stable when it is sleeved on the motor assembly 200. If the distance between the first end a and the second end b is shorter, the sleeve is not firm and easy to fall off; if the distance between the first end a and the second end b is longer, exceeding the area of ​​the motor assembly 200 for sleeve fixing, the sleeve is also not firm and affects the arrangement of other components. The distance between the first end a and the second end b can be 3mm, 3.2mm, 3.5mm, 3.9mm, 4.2mm, 4.5mm, 4.8mm, 5.4mm, 5.8mm, 6.2mm, 6.5mm or a range composed of any two of the above values, for example, it can be 3mm to 4.2mm, 4.2mm to 5.8mm, 5.8mm to 6.5mm, 3.5mm to 5.8mm, etc.

[0034] According to one embodiment of the present application, the fixing portion 101 and the air guide portion 102 are designed as an integral part. The air guide cover 100 with the fixing portion 101 and the air guide portion 102 as an integral part is simple to manufacture, low in cost, and simple to install when assembled to the motor assembly 200. In other embodiments, the fixing portion 101 and the air guide portion 102 of the air guide cover 100 may also be designed as separate parts as needed.

[0035] In order to solve the above technical problems, the present application also provides a vacuum cleaner (not shown in the figure), Figure 1 and reference Figure 2 The vacuum cleaner includes a motor assembly 200, a hood 202, a support 203 and the above-mentioned air deflector 100. The motor assembly 200 includes a centrifugal impeller 201, which is used for suction or exhaust; the support 203 is arranged near the air inlet side of the motor assembly 200; the hood 202 is sleeved on the outer wall of the support 203; and the air deflector 100 is sleeved on the air outlet side of the motor assembly 200.

[0036] Specifically, the support member 203 is arranged on the outer ring of the centrifugal impeller 201, and the two are relatively fixed by a bearing (not shown in the figure). There is a gap between the support member 203 and the centrifugal impeller 201 for air flow. The wind cover 202 is sleeved on the outer wall of the support member 203, and the gap between the support member 203 and the centrifugal impeller 201 forms a section of the air duct. The air guide cover 100 is sleeved on the air outlet side of the motor assembly 200, that is, it is sleeved on the outer wall of the support member 203, and the gap between the air guide cover 100 and the motor assembly 200 further forms another section of the air duct. After the air guide cover 100 and the air guide cover 202 are connected to the outer wall of the support member 203, they work together to achieve the effect of extending the air duct. Among them, the way in which the air guide cover 100 is sleeved on the motor assembly 200 is that the fixing part 101 of the air guide cover 100 is sleeved on the outer wall of the support member 203 and connected to the air guide cover 202.

[0037] According to an embodiment of the present application, the connection mode of the fixing part 101 and the wind shield 202 can be sequentially connected on the outer wall surface of the support member 203, or partially overlapped and connected on the outer wall surface of the support member 203. When the fixing part 101 and the wind shield 202 are partially overlapped and connected on the outer wall surface of the support member 203, the inner diameter of the ring of the fixing part 101 is greater than the outer diameter of the ring of the wind shield 202.

[0038] The air guide portion 102 of the air guide cover 100 covers at least part of the motor assembly 200. Further, the side wall 1021 of the air guide portion 102 is tilted toward the central axis of the air guide portion 102 away from the fixed portion 101, and the air guide cover 100 is designed in a constricted shape. When the air guide cover 100 with this constricted design is installed on the air outlet side (air outlet end) of the motor assembly 200, on the one hand, it plays a role in blocking part of the noise from leaking outward and reducing the noise. On the other hand, it can also play an air diversion role, control the direction of air flow, gather the scattered and chaotic air, optimize the air flow field at the air outlet end of the motor assembly 200, avoid air flow loss, and ensure that the efficiency of the motor assembly 200 is not reduced on the basis of constant power; the air guide cover 100 and the wind cover 202 are connected to form an air duct together, which extends the air duct to a certain extent. The air flow field after the diversion optimization further reduces the noise, so that the noise reduction effect of the motor assembly 200 after the air guide cover 100 is set is very obvious.

[0039] According to one embodiment of the present application, referring to Figure 1 The motor assembly 200 includes an iron core 2001 and a carbon brush 2002. The carbon brush 2002 is disposed at one end of the iron core 2001 away from the support member 203. Figure 2 The air guide portion 102 of the air guide cover 100 covers at least a portion of the motor assembly 200 , that is, the air guide portion 102 covers and wraps the outside of the iron core 2001 .

[0040] The gap between the support 203 (wind cover 202) and the centrifugal impeller 201, and the gap between the air guide cover 100 and the iron core 2001 form an air duct. An end of the second opening 1012 of the air guide portion 102 away from the fixed portion 101 forms an air outlet 1024. During the operation of the motor assembly 200, the gas enters from the side of the wind cover 202 away from the air guide cover 100, and flows out from the air outlet 1024 of the air guide cover 100. All the gas in the air duct passes through the iron core 2001 and the winding (not shown in the figure), realizing ventilation and heat dissipation of the iron core 2001 and the winding, reducing the high temperature of the iron core 2001, and improving the durability and reliability of the motor assembly 200.

[0041] According to an embodiment of the present application, the distance from the air outlet 1024 to the second end b (the second opening 1012) is less than or equal to the axial length of the iron core 2001. In other words, the length of the air guide 102 is constant, and there is a gap between the air guide 102 and the carbon brush 2002 to facilitate air outflow to dissipate heat from the iron core 2001. In one embodiment, the distance from the air outlet 1024 to the second opening 1012 is 35 cm.

[0042] In summary, the present application provides a deflector 100, which includes a fixed portion 101 and a deflector 102. The first opening 1011 of the fixed portion 101 is sleeved on the motor assembly 200. The second opening 1012 of the fixed portion 101 is connected to the deflector 102. The side wall 1021 of the deflector 102 is tilted toward the central axis of the deflector 102, that is, the deflector 100 is designed in a constricted shape. When the deflector 100 with such a constricted shape is installed at the air outlet end of the motor assembly 200, on the one hand, it plays a role in blocking part of the noise from leaking outward and reducing the noise. On the other hand, it can also play an air diversion role, control the direction of air flow, gather the scattered and chaotic air, optimize the air flow field of the air outlet end of the motor assembly 200, avoid air flow loss, and ensure that the efficiency of the motor assembly 200 is not reduced on the basis of constant power. The optimized air flow field can further reduce noise, and the noise reduction effect is very obvious.

[0043] The above description provided by this application is only an implementation method of this application, and does not limit the patent scope of this application. Any equivalent structure or equivalent process transformation made using the contents of the description and drawings of this application, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of this application.

Claims

1. A deflector, which is used to cover the air outlet side of the motor assembly of a vacuum cleaner, characterized in that: include: A fixing portion, the fixing portion having a first end and a second end arranged opposite to each other, the first end having a first opening, the second end having a second opening, the first opening being used to be sleeved on the air outlet side of the motor assembly of the vacuum cleaner; The guide part is connected to the second end of the fixing part and is covered on the second opening. The guide part is extended from the second end toward a side away from the first end, and the side wall of the guide part is inclined toward the central axis of the guide part.

2. The air deflector according to claim 1, characterized in that: The inclination angle of the side wall toward the central axis is 50 degrees to 70 degrees.

3. The air deflector according to claim 1, characterized in that: The side wall includes an inner wall and an outer wall, the inner wall is connected to a first position of the fixing portion, the outer wall is connected to a second position of the fixing portion, and a distance between the first position and the second position is less than or equal to a thickness of the fixing portion.

4. The air deflector according to claim 3, characterized in that: The distance between the first position and the second position is 0.6 mm to 2 mm, the distance from the first end to the second end is 3 mm to 6.5 mm, and the thickness of the fixing portion is 0.6 mm to 3 mm.

5. The air deflector according to claim 1, characterized in that: The fixing portion and the flow guide portion are of integrated design.

6. A vacuum cleaner, characterized in that: The vacuum cleaner comprises: A motor assembly for sucking or extracting air; A support member, arranged on the air inlet side of the motor assembly; A wind shield, sleeved on the outer wall of the support member; And the air deflector according to any one of claims 1 to 5, wherein the air deflector is sleeved on the air outlet side of the motor assembly.

7. The vacuum cleaner according to claim 6, characterized in that The fixing portion of the air deflector is sleeved on the outer wall of the support member and connected to the wind cover; the air deflector portion of the air deflector covers at least a portion of the motor assembly.

8. The vacuum cleaner according to claim 7, characterized in that The fixing part of the air guide cover is sleeved on the outer wall of the support member and connected to the air guide cover in the following manner: The air deflector and the wind shield are sequentially connected on the outer wall of the support; or, the air deflector and the wind shield are partially overlapped and connected on the outer wall of the support.

9. The vacuum cleaner according to claim 7, characterized in that: The motor assembly comprises: Iron core; A carbon brush is arranged at one end of the iron core away from the support member; The air guide portion covers the iron core, and there is a gap between the air guide portion and the carbon brush; the gap between the wind cover, the air guide cover and the iron core forms an air duct.

10. The vacuum cleaner according to claim 9, characterized in that An end of the air guide portion away from the second opening forms an air outlet, and a distance from the air outlet to the second opening is less than or equal to an axial length of the iron core.

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