Dust collector

Abstract

According to the dust collector, an air inlet channel is formed in a first shell of the dust collector, a second shell is located on one side of the first shell in the first direction, a suction cavity and an air outlet channel are formed in the second shell, the suction cavity communicates with the air inlet channel, and the air outlet channel communicates with the suction cavity; the air outlet channel and the air inlet channel are at least partially staggered in the second direction perpendicular to the first direction. The fan blade structure is arranged in the suction cavity; the third shell is located on the side, away from the first shell, of the second shell in the first direction. The brushless motor is arranged in the third shell, and the brushless motor is rotationally connected with the fan blade structure and drives the fan blade structure to rotate so that negative pressure can be formed in the suction cavity. On the basis, according to the dust collector, impact of dust, chippings, hair and other sundries on the fan blade structure and the brushless motor can be reduced, and the service life of the dust collector is long; meanwhile, the brushless motor operates stably, the efficiency of the dust collector is higher, and operation is more stable.

Description

Technical Field

[0001] The present application relates to the field of daily necessities, and in particular to a vacuum cleaner. Background Art

[0002] A vacuum cleaner usually refers to a vacuum cleaner, which is a device that uses a motor to drive the blades to rotate at high speed, creating negative air pressure in a sealed shell, generating suction to suck up and collect small objects such as dust, debris, and hair.

[0003] During use, the blades and motors of the vacuum cleaners of the related art are easily hit by dust, debris, and hair, which shortens the service life of the vacuum cleaners. For example, in the vacuum cleaner of CN117941975A, the air inlet and outlet of the vacuum cleaner are arranged opposite to the blades and motor, and dust and other debris easily hit the blades and motor, which shortens the service life of the vacuum cleaners. Utility Model Content

[0004] The purpose of the present application is to provide a vacuum cleaner, which can reduce the impact of dust, debris, hair and other debris on the blades and motor and improve the service life of the vacuum cleaner by making special improvements to the setting positions of the internal components of the vacuum cleaner and the airflow path of the vacuum cleaner.

[0005] The present application is implemented in this way. The present application provides a vacuum cleaner, comprising:

[0006] a first housing, wherein the first housing is formed with an air intake passage;

[0007] a second shell, located at one side of the first shell along the first direction, the second shell being formed with a suction cavity and an air outlet channel, the suction cavity being communicated with the air inlet channel, the air outlet channel being communicated with the suction cavity, and the air outlet channel being at least partially staggered with the air inlet channel in a second direction perpendicular to the first direction;

[0008] A fan blade structure is arranged in the suction cavity;

[0009] A third shell is located on a side of the second shell away from the first shell along the first direction; and

[0010] A brushless motor is disposed in the third housing, and is rotationally connected to the fan blade structure and drives the fan blade structure to rotate so that negative pressure can be formed in the suction cavity.

[0011] In one embodiment, the second shell is further formed with:

[0012] A heat dissipation cavity, wherein the heat dissipation cavity is located between the suction cavity and the third shell along the first direction and is in communication with the two; wherein,

[0013] A first communication port is formed between the suction cavity and the air inlet passage, and a second communication port is formed between the suction cavity and the heat dissipation cavity. The diameter of the second communication port is smaller than the diameter of the first communication port.

[0014] In one embodiment, the vacuum cleaner further comprises:

[0015] A heat dissipation fan is located in the heat dissipation cavity, and the heat dissipation fan is respectively connected to the brushless motor and the fan blades in a coaxial rotation.

[0016] In one of the embodiments, at least one first heat dissipation hole area communicating with the heat dissipation cavity is formed in the shell portion of the second shell corresponding to the heat dissipation cavity.

[0017] In one embodiment, the orientation direction of each of the first heat dissipation hole regions is different from the orientation direction of the air inlet channel.

[0018] In one embodiment, the vacuum cleaner further comprises:

[0019] The heat dissipation air guide plate is located between the heat dissipation cavity and the third shell along the first direction. The heat dissipation air guide plate is provided with a through hole for the shaft of the brushless motor to pass through. The diameter of the through hole is greater than the diameter of the second connecting port.

[0020] In one embodiment, the third shell includes a first cavity and a second cavity, the first cavity is located between the suction cavity and the second cavity along the first direction and is connected to the two; wherein,

[0021] The vacuum cleaner further includes a controller, wherein the controller is located in the second cavity, and the brushless motor is located in the first cavity.

[0022] In one embodiment, the vacuum cleaner further comprises:

[0023] A control module, the control module is located on the top surface of the third shell, and the control module is electrically connected to the controller; the control module is the power switch of the vacuum cleaner, and / or the control module is used to adjust the rotation speed of the brushless motor.

[0024] In one of the embodiments, the third shell has at least one second heat dissipation hole area in communication with the second cavity formed in the shell portion corresponding to the second cavity.

[0025] In one embodiment, the vacuum cleaner further comprises:

[0026] A moving wheel assembly is located along the first direction on a side of the first shell away from the second shell and is rotatably connected to the first shell.

[0027] Based on the above technical scheme, the second shell of the vacuum cleaner of the present application is located on one side of the first shell along the first direction, and the third shell is located on the side of the second shell away from the first shell along the first direction. There is a height difference between the brushless motor formed in the third shell and the fan blade structure formed in the second shell and the air intake channel formed in the first shell. Dust, debris, hair and other sundries sucked from the air intake channel are not easy to hit the fan blade structure and the brushless motor, and the service life of the fan blade structure and the brushless motor is long; at the same time, the air outlet channel and the air intake channel are at least partially staggered in the second direction. Dust, debris, hair and other sundries sucked from the air intake channel can be more smoothly discharged from the vacuum cleaner under the rotation of the fan blade structure, thereby further reducing the impact with the fan blade structure and the brushless motor, and the service life of the fan blade structure and the brushless motor can be further improved. In addition, the brushless motor of the vacuum cleaner of the present application is arranged in a higher third shell, and the fan blade structure is arranged in a lower second shell. The weight distribution of the entire vacuum cleaner is more balanced and the structure of the vacuum cleaner is more stable. Moreover, the brushless motor does not require contact commutation like a traditional brushed motor during operation, which makes the vacuum cleaner of the present application more efficient and more stable in operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solution in this application, the following is a brief introduction to the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without creative work.

[0029] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings, wherein the same figure numbers represent the same parts in the following description.

[0030] Figure 1 A schematic diagram of the overall structure of a vacuum cleaner provided in an embodiment of the present application;

[0031] Figure 2 A schematic diagram of an exploded structure of a vacuum cleaner provided in an embodiment of the present application;

[0032] Figure 3 A cross-sectional view of a vacuum cleaner provided in an embodiment of the present application;

[0033] Figure 4 A schematic diagram of the airflow path of a vacuum cleaner provided in an embodiment of the present application.

[0034] The reference numerals are:

[0035] 100, vacuum cleaner; 10, first shell; 20, second shell; 30, third shell; 40, brushless motor; 50, fan blade structure; 60, cooling fan; 70, cooling air guide plate; 80, controller; 90, power cord; 110, control module; 120, moving wheel assembly; 11, air inlet channel; 21, suction cavity; 22, air outlet channel; 23, cooling cavity; 31, first cavity; 32, second cavity; 101, first connecting port; 102, second connecting port; 103, first cooling hole area; 104, second cooling hole area; H1, first direction; H2, second direction; H3, third direction. DETAILED DESCRIPTION

[0036] The following will be combined with the appendix of this application Figure 1 To Attachment Figure 4 The technical solutions in this application are clearly and completely described in the following embodiments. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this application.

[0037] 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.

[0038] The following is a detailed description with reference to specific embodiments. It should be noted that the embodiments of the present application can be presented in various forms, some examples of which will be described below.

[0039] In the field of daily necessities, during the use of vacuum cleaners of related technology, the air intake path, suction chamber and air outlet path of the vacuum cleaner are often at the same height and directly connected to each other, which makes it easy for dust, debris, hair and other debris to entangle the motor and fan blades and affect the use state of the vacuum cleaner. At the same time, dust, debris, hair and other debris are also easy to hit the motor and fan blades and affect the service life of the vacuum cleaner.

[0040] In response to the technical problem in the related art that the motor and fan blades of the vacuum cleaner are easily hit by debris, thus affecting the use status and service life of the vacuum cleaner, the present application provides a vacuum cleaner 100, wherein there is a height difference between the air inlet channel 11 and the suction chamber 21 where the fan blade structure 50 is located, and the third shell 30 where the brushless motor 40 is located. At the same time, the air inlet channel 11 and the air outlet channel 22 are at least partially staggered in design, so that dust, debris, hair and other debris sucked in from the air inlet channel 11 are not easily hit by the brushless motor 40 and the fan blade structure 50 and can be discharged smoothly, thereby extending the service life of the vacuum cleaner 100 of the present application.

[0041] For details, please refer to Figures 1 to 3 , Figure 1 A schematic diagram of the overall structure of the vacuum cleaner 100 provided in an embodiment of the present application is shown in FIG. Figure 2 A schematic diagram of an exploded structure of the vacuum cleaner 100 provided in an embodiment of the present application is shown in FIG. Figure 3 A cross-sectional view of a vacuum cleaner 100 provided in an embodiment of the present application. The vacuum cleaner 100 of the present application comprises a first housing 10 , a second housing 20 , a third housing 30 , a brushless motor 40 and a fan blade structure 50 .

[0042] The second housing 20 is located on one side of the first housing 10 along the first direction H1, and the third housing 30 is located on one side of the second housing 20 away from the first housing 10 along the first direction H1. The first housing 10, the second housing 20 and the third housing 30 are stacked in sequence along the first direction H1. Figures 1 to 3 As shown, the first direction H1 is the height direction of the vacuum cleaner 100, the second shell 20 is located above the first shell 10, and the third shell 30 is located above the second shell 20. The first shell 10 is formed with an air inlet channel 11, and the second shell 20 is formed with a suction cavity 21 and an air outlet channel 22. The suction cavity 21 is connected to the air inlet channel 11, and the air outlet channel 22 is connected to the suction cavity 21. In addition, the air outlet channel 22 is at least partially staggered with the air inlet channel 11 in a second direction H2 perpendicular to the first direction H1. The second direction H2 can be the width direction of the vacuum cleaner 100. The fan blade structure 50 is arranged in the suction cavity 21, and the brushless motor 40 is arranged in the third shell 30. The brushless motor 40 is rotatably connected to the fan blade structure 50 and drives the fan blade structure 50 to rotate so that the suction cavity 21 can form a negative pressure.

[0043] It can be understood that the air inlet channel 11 and the air outlet channel 22 can extend along the third direction H3, and the third direction H3 can be the length direction of the vacuum cleaner 100. The third direction H3, the second direction H2 and the first direction H1 are perpendicular to each other.

[0044] It is understandable that the brushless motor 40 is composed of a motor body and a driver; in terms of structure, the rotor of the brushless motor 40 is a permanent magnet, and the stator is a winding coil. By changing the alternating frequency and waveform of the current wave input to the stator coil, a full-turn magnetic field can be formed around the winding coil, thereby driving the rotor to rotate. The operation of the brushless motor 40 does not require contact commutation like a traditional brushed motor, so it is more efficient, more stable in operation, and has a longer service life. Among them, there is a height difference between the brushless motor 40 formed in the third housing 30 and the fan blade structure 50 formed in the second housing 20 and the air intake channel 11 formed in the first housing 10. Dust, debris, hair and other debris sucked from the air intake channel 11 are not easy to hit the fan blade structure 50 and the brushless motor 40, and the fan blade structure 50 and the brushless motor 40 have a longer service life.

[0045] It is understandable that the vacuum cleaner 100 of the present application may also include structures such as a hose, a vacuum head, and a dust bag. One end of the hose is connected to an end of the air inlet channel 11 away from the suction cavity 21, and the other end of the hose is connected to the vacuum head, which is used to absorb dust, debris, hair and other debris. The dust bag is connected to an end of the air outlet channel 22 away from the suction cavity 21, and the dust bag is used to collect debris.

[0046] Please refer to Figure 4 , Figure 4A schematic diagram of the airflow path of the vacuum cleaner 100 provided in the embodiment of the present application. In the first direction H1, there is a height difference between the air inlet channel 11 formed in the first shell 10 and the suction cavity 21 formed in the second shell 20; in the second direction H2, the air outlet channel 22 is at least partially staggered with the air inlet channel 11, and the projections of the air outlet channel 22 and the air inlet channel 11 on the plane perpendicular to the first direction H1 partially overlap or are completely separated. At this time, the dust, debris, hair and other debris sucked from the air inlet channel 11 are moved upward into the suction cavity 21 by the negative pressure in the suction cavity 21. Due to the rotation of the fan blade structure 50, the debris can be discharged from the air outlet channel 22 that is at least partially staggered with the air inlet channel 11 as the fan blade structure 50 rotates a certain distance, and the discharge of the debris is smoother. It should be noted that if the air outlet channel 22 is arranged opposite to the air inlet channel 11 in the second direction H2, affected by the rotation speed of the fan blade structure 50, dust, debris, hair and other debris will move with the fan blade structure 50 for a distance and stagger with the air outlet channel 22 (opposite to the air inlet channel 11), so that the debris is not easy to be discharged from the vacuum cleaner 100, and the debris is also easily affected by the reaction force of the wall of the second shell 20 and easily hits the fan blade structure 50. However, the air outlet channel 22 of the present application is at least partially staggered with the air inlet channel 11, and dust, debris, hair and other debris can be smoothly discharged from the air outlet channel 22 after moving with the fan blade structure 50. Based on this, the present application makes special improvements to the air flow path of the vacuum cleaner 100, so that there is a height difference between the air inlet channel 11 and the suction chamber 21 and the air outlet channel 22, and in the second direction H2, the air outlet channel 22 and the air inlet channel 11 are at least partially staggered. At this time, dust, debris, hair and other sundries sucked in from the air inlet channel 11 can be smoothly discharged from the vacuum cleaner 100 and reduce the impact with the fan blade structure 50 and the brushless motor 40.

[0047] It is understandable that in the second direction H2, the air outlet channel 22 and the air inlet channel 11 can be completely staggered. For example, the air outlet channel 22 and the air inlet channel 11 can be symmetrically arranged relative to the center of the suction chamber 21 (for example, the area where the fan blade structure 50 is connected to the rotating shaft of the brushless motor 40) and staggered with each other.

[0048] It can be understood that a first connecting port 101 is formed between the air inlet channel 11 and the suction chamber 21, and the first connecting port 101 can be arranged directly opposite to the rotating axis of the fan blade structure 50. Since the pressure at the rotating axis of the fan blade structure 50 is lower than the pressure at the edge of the fan blade structure 50, the debris sucked in from the first connecting port 101 is further less likely to hit the fan blade structure 50.

[0049] It is understood that, in some embodiments, at least two of the first shell 10, the second shell 20, and the third shell 30 may be an integrally formed structure. Of course, in other embodiments, a portion of the first shell 10, a portion of the second shell 20, and a portion of the third shell 30 may be an integrally formed structure, and another portion of the first shell 10, another portion of the second shell 20, and another portion of the third shell 30 may also be an integrally formed structure, so that the entire vacuum cleaner 100 may be formed by splicing two half shells. The embodiment of the present application does not specifically limit the shell structure of the vacuum cleaner 100.

[0050] In the vacuum cleaner 100 of the embodiment of the present application, the second shell 20 is located on one side of the first shell 10 along the first direction H1, and the third shell 30 is located on the side of the second shell 20 away from the first shell 10 along the first direction H1. There is a height difference between the brushless motor 40 formed in the third shell 30 and the fan blade structure 50 formed in the second shell 20 and the air intake channel 11 formed in the first shell 10. Dust, debris, hair and other debris sucked from the air intake channel 11 are not easy to hit the fan blade structure 50 and the brushless motor 40, and the service life of the fan blade structure 50 and the brushless motor 40 is longer; at the same time, the air outlet channel 22 and the air intake channel 11 are at least partially staggered in the second direction H2, and the dust, debris, hair and other debris sucked from the air intake channel 11 can be smoothly discharged from the vacuum cleaner 100 as the fan blade structure 50 rotates, thereby further reducing the collision of debris with the fan blade structure 50 and the brushless motor 40, and the service life of the brushless motor 40 is longer. Furthermore, the brushless motor 40 of the vacuum cleaner 100 of the present application is arranged on a higher third shell 30, and the fan blade structure 50 is arranged on a lower first shell 10, so that the weight distribution of the entire vacuum cleaner 100 is more balanced and the structure of the vacuum cleaner 100 is more stable; moreover, the brushless motor 40 of the vacuum cleaner 100 does not require contact commutation like a traditional brushed motor during operation, and thus the vacuum cleaner 100 of the embodiment of the present application is more efficient and operates more stably.

[0051] Please refer again to Figures 1 to 3 , the second shell 20 is also formed with a heat dissipation cavity 23. The heat dissipation cavity 23 is located between the suction cavity 21 and the third shell 30 along the first direction H1, and the heat dissipation cavity 23 is connected with the suction cavity 21 and the third shell 30. Among them, a first connecting port 101 is formed between the suction cavity 21 and the air inlet channel 11, and a second connecting port 102 is formed between the suction cavity 21 and the heat dissipation cavity 23, and the diameter of the second connecting port 102 is smaller than the diameter of the first connecting port 101. When the brushless motor 40 works in the third shell 30, a negative pressure space is also easily formed in the third shell 30. When a smaller second connecting port 102 is formed between the heat dissipation cavity 23 and the third shell 30, dust, debris, hair and other debris are not easy to enter the third shell 30 and hit the brushless motor 40, which can further improve the service life of the brushless motor 40.

[0052] It is understandable that the second shell 20 has at least one first heat dissipation hole area 103 connected to the heat dissipation cavity 23 formed in the shell portion corresponding to the heat dissipation cavity 23. The first heat dissipation hole area 103 may include a plurality of heat dissipation holes arranged in an array or randomly arranged, and each small heat dissipation hole may be circular, square or other shapes. The present application does not limit the specific structure of the first heat dissipation hole area 103. The first heat dissipation hole area 103 of the embodiment of the present application discharges the heat generated by the brushless motor 40 and the fan blade structure 50 when they are working out of the vacuum cleaner 100, and the vacuum cleaner 100 has higher working safety and longer service life.

[0053] It is understandable that the orientation of the first heat dissipation hole area 103 is different from the orientation of the air inlet channel 11. Figures 1 to 3 As shown, the air intake channel 11 is located in the left area of ​​the first heat dissipation hole area 103. In the embodiment of the present application, the first heat dissipation hole area 103 can be set in the right area, front area, and rear area of ​​the second shell 20 corresponding to the heat dissipation cavity 23. At this time, no heat dissipation holes are set in the left area. In the present application, the gas discharged from the first heat dissipation hole area 103 is not easy to affect the dust collection operation of the air intake channel 11, and the dust collection effect of the vacuum cleaner 100 is better.

[0054] Understandably, please refer again Figures 1 to 3 The vacuum cleaner 100 further includes a heat dissipation fan 60, which is disposed in the heat dissipation cavity 23. The heat dissipation fan 60 is coaxially connected to the brushless motor 40 and the fan blade structure 50, respectively, and the brushless motor 40 can drive the heat dissipation fan 60 and the fan blade structure 50 to rotate together. The heat dissipation fan 60 of the present application can discharge the heat generated by the brushless motor 40 outside the vacuum cleaner 100, and the vacuum cleaner 100 works more safely.

[0055] Understandably, please refer again Figure 1 and Figure 2 The vacuum cleaner 100 further includes a heat dissipation air guide plate 70. The heat dissipation air guide plate 70 is located between the third housing 30 and the heat dissipation cavity 23 along the first direction H1. A through hole is provided on the heat dissipation air guide plate 70 for the rotation shaft of the brushless motor 40 to pass through. The diameter of the through hole is greater than the diameter of the second connecting port 102. The heat dissipation air guide plate 70 can guide the heat generated by the brushless motor 40 into the heat dissipation cavity 23 and discharge it from the vacuum cleaner 100 through the first heat dissipation hole area 103 of the heat dissipation cavity 23.

[0056] Please refer again to Figures 1 to 3The third shell 30 of the vacuum cleaner 100 includes a first cavity 31 and a second cavity 32 that are connected to each other. The first cavity 31 is located between the suction cavity 21 and the second cavity 32 along the first direction H1, and the second cavity 32 is located on a side of the first cavity 31 away from the suction cavity 21. The first cavity 31 is closer to the second shell 20.

[0057] It is understandable that the vacuum cleaner 100 also includes a controller 80, which is electrically connected to the brushless motor 40 and can control the brushless motor 40 to work or stop working. Among them, the brushless motor 40 is located in the first cavity 31, and the controller 80 is located in the second cavity 32. Compared with the controller 80, the brushless motor 40 is closer to the fan blade structure 50, and the rotating shaft between the brushless motor 40 and the fan blade structure 50 is shorter, and the brushless motor 40 is easier to drive the fan blade structure 50 to rotate. In addition, the controller 80 is located in the second cavity 32, the controller 80 is closer to the top of the vacuum cleaner 100, the distance between the controller 80 and the power cord 90 of the vacuum cleaner 100 is closer, the power line in the vacuum cleaner 100 is shorter, and the internal structure layout of the vacuum cleaner 100 is more compact.

[0058] It is understandable that the height of the first cavity 31 along the first direction H1 is less than the height of the second cavity 32 along the first direction H1. At this time, the structure distribution of the entire vacuum cleaner 100 is more balanced, the vacuum cleaner 100 is not easy to fall over, and the vacuum cleaner 100 is more stable.

[0059] It is understandable that the third housing 30 is formed with at least one second heat dissipation hole area 104 connected to the second cavity 32 in the housing portion corresponding to the second cavity 32. The second heat dissipation hole area 104 may include a plurality of heat dissipation holes arranged in an array or randomly arranged, and each small heat dissipation hole may be circular, square or other shapes. The present application does not limit the specific structure of the second heat dissipation hole area 104. The present application sets the second heat dissipation hole area 104 on the third housing 30, so that the heat generated by the controller 80 can be discharged from the vacuum cleaner 100, and the vacuum cleaner 100 can run more safely.

[0060] Among them, in some embodiments, the vacuum cleaner 100 also includes a control module 110, which is located on the top surface of the third housing 30, and the control module 110 is electrically connected to the controller 80. In some embodiments, the control module 110 can be a power switch of the vacuum cleaner 100, and the control module 110 can control the external power supply to power the vacuum cleaner 100 or not. In other embodiments, the control module 110 can adjust the speed of the brushless motor 40. For example, the control module 110 can receive the user's adjustment of the power supply frequency and voltage parameters of the brushless motor 40 and transmit the relevant parameters to the controller 80, so as to adjust the power supply frequency and voltage of the brushless motor 40 by the controller 80 to achieve the adjustment of the speed of the brushless motor 40, and the control module 110 can be a stepless speed regulation module. Of course, in some other embodiments, the control module 110 can also integrate the power switch and the stepless speed regulation module at the same time, so that the control module 110 can control the external power supply to power the vacuum cleaner 100 or not, and can also adjust the speed of the brushless motor 40.

[0061] In some embodiments, please refer to Figures 1 to 3 The vacuum cleaner 100 further includes a moving wheel assembly 120. The moving wheel assembly 120 is located on a side of the first housing 10 away from the second housing 20 along the first direction H1 and is connected to the first housing 10. The moving wheel assembly 120 may include at least one moving wheel. For example, the vacuum cleaner 100 of the present application may be provided with four moving wheels. Under the action of the moving wheel assembly 120, the vacuum cleaner 100 of the present application may roll forward, and the user may save effort when operating the vacuum cleaner 100.

[0062] Based on the above description, the moving wheel assembly 120, the first shell 10, the second shell 20 and the third shell 30 of the vacuum cleaner 100 of the present application are arranged in sequence along the first direction H1, the controller 80 is arranged in the second cavity 32 of the third shell 30, the brushless motor 40 is arranged in the first cavity 31 of the third shell 30, the cooling fan 60 is arranged in the cooling cavity 23 of the second shell 20, and the fan blade structure 50 is arranged in the suction cavity 21 of the second shell 20. The center of gravity of the entire vacuum cleaner 100 is biased downward, and the structure of the vacuum cleaner 100 is more stable. The vacuum cleaner 100 is more labor-saving to use; at the same time, there is a height difference between the air inlet channel 11 and the suction chamber 21 and the third shell 30, and the air inlet channel 11 is also staggered with the air outlet channel 22. Dust, debris, hair and other debris can be smoothly discharged from the vacuum cleaner 100 to reduce the impact with the fan blade structure 50 and the brushless motor 40, and the service life of the brushless motor 40 is longer; moreover, the operation of the brushless motor 40 of the vacuum cleaner 100 does not require contact commutation like a traditional brushed motor, and the vacuum cleaner 100 is more efficient and operates more stably.

[0063] It should be noted that the directional terms mentioned in the embodiments of the present application, such as "upper", "lower", "front", "back", "left", "right", "inner", "outer", "side", etc., are only reference to the directions of the attached drawings. Therefore, the directional terms used are used to illustrate and understand the embodiments of the present application, rather than to limit the embodiments of the present application. In the various drawings, units with similar structures are represented by the same figure numbers. For clarity, the various parts in the drawings are not drawn to scale. In addition, certain related parts may not be shown in the drawings.

[0064] It should be understood that, in the description of this application, terms such as "first", "second", etc. are only used to distinguish similar objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0065] It is understandable that those skilled in the art can combine various implementations in the above embodiments under the guidance of the above embodiments to obtain technical solutions of multiple implementations. The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

[0066] The vacuum cleaner provided by the present application is described in detail above. Specific examples are used herein to illustrate the principle and implementation method of the present application. The description of the above embodiments is only used to help understand the present application. At the same time, for those skilled in the art, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as limiting the present application.

Claims

1. A vacuum cleaner, characterized in that: include: a first housing, wherein the first housing is formed with an air intake passage; a second shell, located at one side of the first shell along the first direction, the second shell being formed with a suction cavity and an air outlet channel, the suction cavity being communicated with the air inlet channel, the air outlet channel being communicated with the suction cavity, and the air outlet channel being at least partially staggered with the air inlet channel in a second direction perpendicular to the first direction; A fan blade structure is arranged in the suction cavity; a third shell, located along the first direction on a side of the second shell away from the first shell; and A brushless motor is disposed in the third housing, and is rotationally connected to the fan blade structure and drives the fan blade structure to rotate so that negative pressure can be formed in the suction cavity.

2. The vacuum cleaner according to claim 1, characterized in that: The second shell is also formed with: A heat dissipation cavity, wherein the heat dissipation cavity is located between the suction cavity and the third shell along the first direction and is in communication with the two; wherein, A first communication port is formed between the suction cavity and the air inlet passage, and a second communication port is formed between the suction cavity and the heat dissipation cavity. The diameter of the second communication port is smaller than the diameter of the first communication port.

3. The vacuum cleaner according to claim 2, characterized in that: The vacuum cleaner also includes: A heat dissipation fan is located in the heat dissipation cavity, and the heat dissipation fan is respectively connected to the brushless motor and the fan blades in a coaxial rotation.

4. The vacuum cleaner according to claim 3, characterized in that: The second shell is formed with at least one first heat dissipation hole area communicating with the heat dissipation cavity in a shell portion corresponding to the heat dissipation cavity.

5. The vacuum cleaner according to claim 4, characterized in that: The orientation direction of each of the first heat dissipation hole regions is different from the orientation direction of the air inlet channel.

6. The vacuum cleaner according to claim 2, characterized in that: The vacuum cleaner also includes: The heat dissipation air guide plate is located between the heat dissipation cavity and the third shell along the first direction. The heat dissipation air guide plate is provided with a through hole for the shaft of the brushless motor to pass through. The diameter of the through hole is greater than the diameter of the second connecting port.

7. The vacuum cleaner according to any one of claims 1 to 6, characterized in that: The third shell includes a first cavity and a second cavity, wherein the first cavity is located between the suction cavity and the second cavity along the first direction and is connected to the two; wherein, The vacuum cleaner further includes a controller, wherein the controller is located in the second cavity, and the brushless motor is located in the first cavity.

8. The vacuum cleaner according to claim 7, characterized in that: The vacuum cleaner also includes: A control module, the control module is located on the top surface of the third shell, and the control module is electrically connected to the controller; the control module is the power switch of the vacuum cleaner, and / or the control module is used to adjust the rotation speed of the brushless motor.

9. The vacuum cleaner according to claim 7, characterized in that: The third housing is formed with at least one second heat dissipation hole region communicating with the second cavity at a housing portion corresponding to the second cavity.

10. The vacuum cleaner according to any one of claims 1 to 6, characterized in that: The vacuum cleaner also includes: A moving wheel assembly is located along the first direction on a side of the first shell away from the second shell and is rotatably connected to the first shell.

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