Dust collector

Abstract

A dust collector comprises a dust collecting barrel (11), a machine head (9), a first hasp (12) and a second hasp (13), the dust collecting barrel (11) and the machine head (9) are detachably assembled together through the first hasp (12) and the second hasp (13), the machine head (9) is provided with a motor (20), an air inlet window (300), an air outlet window (400), a first silencing piece (21) and a second silencing piece (22), and the air inlet window (300) and the air outlet window (400) are located on the left side and the right side of the machine head (9). Heat dissipation airflow for the motor (20) enters the machine head (9) through the air inlet window (300) and is discharged out of the machine head (9) through the air outlet window (400), and the heat dissipation airflow sequentially penetrates through the air inlet window (300), the first silencing piece (21), the interior of the motor (20), the second silencing piece (22) and the air outlet window (400). The design has good noise reduction and heat dissipation effects.

Description

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on December 26, 2021, with application number 202111606702.0, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to a vacuum cleaner, for example, to heat dissipation and noise reduction of a motor. Background Art

[0003] Chinese patent CN2017201210716 discloses a vacuum cleaner, which is provided with a head, a dust collecting bucket, a first buckle, and a second buckle. The first buckle and the second buckle are located on the left and right sides of the dust collecting bucket, and the first buckle and the second buckle are movably connected to the dust collecting bucket respectively. The head and the dust collecting bucket are detachably assembled together through the first buckle and the second buckle. The head is provided with a motor, a first recessed portion corresponding to the first buckle, and a second recessed portion corresponding to the second buckle. The first recessed portion and the second recessed portion are located on the left and right sides of the head. The first buckle portion is partially accommodated in the first recessed portion, and the second buckle portion is partially accommodated in the second recessed portion. The first recessed portion and the second recessed portion are respectively provided with air inlet windows. The head is also provided with an air outlet window located at the rear side of the head. The heat dissipation airflow of the motor enters the head through the air inlet window of the first recessed portion and the air inlet window of the second recessed portion and is discharged from the head through the air outlet window at the rear side of the head. The layout of the motor heat dissipation inlet and outlet windows and the noise reduction design need to be improved. Summary of the invention

[0004] The present application provides a vacuum cleaner, which is beneficial to the efficient heat dissipation of the motor and reduces the noise transmitted by the heat dissipation airflow of the motor.

[0005] The present application provides a vacuum cleaner, comprising a dust bucket, a head, a first buckle, and a second buckle, wherein the dust bucket and the head are detachably assembled together by the first buckle and the second buckle, the head is provided with a motor, an air inlet window, an air outlet window, a first air-permeable silencer corresponding to the air inlet window, and a second air-permeable silencer corresponding to the air outlet window, the air inlet window and the air outlet window are located on the left and right sides of the head, the heat dissipation airflow for the motor enters the head through the air inlet window located on one of the left and right sides of the head and is discharged from the head through the air outlet window located on the other of the left and right sides of the head, and the heat dissipation airflow passes through the air inlet window, the first silencer, the inside of the motor, the second silencer, and the air outlet window in sequence.

[0006] Optionally, the first buckle and the second buckle are located on the left and right sides of the nose, and the nose is also provided with a first recessed portion corresponding to the first buckle and a second recessed portion corresponding to the second buckle, the first recessed portion and the second recessed portion are located on the left and right sides of the nose, the first buckle is at least partially accommodated in the first recessed portion, and the second buckle is at least partially accommodated in the second recessed portion, the air inlet window is arranged in the first recessed portion, and the air outlet window is arranged in the second recessed portion, the first silencer is located on the side of the air inlet window facing away from the first buckle, and the second silencer is located on the side of the air outlet window facing away from the second buckle.

[0007] Optionally, the first silencer is in the shape of a plate and is shielded on the inner side of the air inlet window, and the second silencer is in the shape of a plate and is shielded on the inner side of the air outlet window.

[0008] Optionally, the machine head is also provided with an outer cover shell and a handle, the handle is connected to the outer cover shell, the first recessed portion and the second recessed portion are respectively part of the outer cover shell, the air inlet window and the air outlet window are located on the left and right sides of the outer cover shell, and the outer cover shell is provided with a first extension portion for fixing the first silencer and a second extension portion for fixing the second silencer, the first extension portion and the air inlet window clamp the first silencer, and the second extension portion and the air outlet window clamp the second silencer.

[0009] Optionally, the air inlet window is provided with a plurality of first grid plates arranged in parallel, and the plurality of first grid plates are located on the side of the air inlet window facing away from the first buckle; the air outlet window is provided with a plurality of second grid plates arranged in parallel, and the plurality of second grid plates are located on the side of the air outlet window facing away from the second buckle; the first extension portion and the plurality of first grid plates clamp a first silencer, and the second extension portion and the plurality of second grid plates clamp a second silencer.

[0010] Optionally, the head is also provided with an outer cover shell, which is provided with a first raised portion and a second raised portion located on the left and right sides of the outer cover shell, the first raised portion is located on the side of the outer cover shell corresponding to the first buckle, the second raised portion is located on the side of the outer cover shell corresponding to the second buckle, the first recessed portion is recessed in the first raised portion, the second recessed portion is recessed in the second raised portion, the first silencer is located in the first raised portion, and the second silencer is located in the second raised portion.

[0011] Optionally, the first raised portion is provided with a first outer wall and a second outer wall located on opposite sides thereof, the first outer wall and the second outer wall are located on opposite sides of the air inlet window, the first silencer is located between the first outer wall and the second outer wall, the first silencer is in the shape of a plate facing the air inlet window, one side of the first silencer is in contact with the first outer wall, and the other opposite side of the first silencer is in contact with the second outer wall; the second raised portion is provided with a third outer wall and a fourth outer wall located on opposite sides thereof, the third outer wall and the fourth outer wall are located on opposite sides of the air outlet window, the second silencer is located between the third outer wall and the fourth outer wall, the second silencer is in the shape of a plate facing the air outlet window, one side of the second silencer is in contact with the third outer wall, and the other opposite side of the second silencer is in contact with the fourth outer wall.

[0012] Optionally, the machine head is also provided with a lower cover, which covers the upper end of the dust collecting bucket, the first buckle is buckled at the edge of one side of the lower cover, the second buckle is buckled at the edge of the opposite side of the lower cover, the outer cover shell is installed on the upper side of the lower cover, the first raised portion is also provided with a first top wall located at the top thereof, the first top wall is integrally connected to the top of the air inlet window, the top of the first outer wall, and the top of the second outer wall, the upper side edge of the first silencer is abutted against the first top wall, and the bottom side edge of the first silencer is abutted against the lower cover; the second raised portion is also provided with a second top wall located at the top thereof, the second top wall is integrally connected to the top of the air outlet window, the top of the third outer wall, and the top of the fourth outer wall, the upper side edge of the second silencer is abutted against the second top wall, and the bottom side edge of the second silencer is abutted against the lower cover.

[0013] Optionally, the first silencer and the second silencer are respectively placed upright on the upper side of the lower cover, and the lower end of the first outer wall, the lower end of the second outer wall, the lower end of the third outer wall, the lower end of the fourth outer wall, the lower end of the air inlet window, and the lower end of the air outlet window are respectively connected to the lower cover.

[0014] Optionally, the first raised portion is also provided with a first top wall located at the top thereof, and the second raised portion is also provided with a second top wall located at the top thereof, the first silencer and the air inlet window are located on the lower side of the first top wall, and the second silencer and the air outlet window are located on the lower side of the second top wall, and the outer cover shell is provided with a first extension portion for fixing the first silencer and a second extension portion for fixing the second silencer, the first extension portion is located within the first raised portion and extends downward from the first top wall as a whole, and the second extension portion is located within the second raised portion and extends downward from the second top wall as a whole.

[0015] Optionally, the motor is provided with a heat dissipation air inlet and a heat dissipation air outlet, and a heat dissipation exhaust duct is formed in the machine head. The heat dissipation airflow enters the motor from the heat dissipation air inlet and is discharged from the motor from the heat dissipation air outlet and flows into the heat dissipation exhaust duct. An air outlet is provided at one end of the heat dissipation exhaust duct, and the air outlet window is located downstream of the air outlet of the heat dissipation exhaust duct.

[0016] Optionally, the head is also provided with a first recessed portion corresponding to the first buckle, a second recessed portion corresponding to the second buckle, a first raised portion corresponding to the first buckle, and a second raised portion corresponding to the second buckle, the first recessed portion is recessed in the first raised portion, the second recessed portion is recessed in the second raised portion, and the heat dissipation exhaust duct fluid is connected between the heat dissipation outlet of the motor and the interior of the second raised portion.

[0017] Optionally, the air outlet and the air outlet window of the heat dissipation exhaust duct are located on the left and right sides of the second raised portion, the air outlet of the heat dissipation exhaust duct faces the air outlet window, and the air outlet of the heat dissipation exhaust duct is directly connected to the interior of the second raised portion.

[0018] Optionally, the machine head is provided with a heat dissipation hood for forming a heat dissipation exhaust duct, the air outlet of the heat dissipation exhaust duct is located at one end of the heat dissipation hood relatively close to the air outlet window, the heat dissipation hood is provided with a shielding plate, the heat dissipation air inlet of the motor is located at the top of the motor, the shielding plate is located above the heat dissipation air inlet, and the projection formed by the vertical downward projection of the shielding plate completely covers the heat dissipation air inlet.

[0019] Optionally, the machine head is also provided with a vibration-damping sealing gasket, the heat dissipation hood is provided with a ring portion and a vent, the baffle plate is located on the upper side of the ring portion, the vent is formed between the ring portion and the baffle plate, the vibration-damping sealing gasket is sleeved on the upper end of the motor and sealed between the upper end periphery of the motor and the ring portion to isolate the heat dissipation air inlet of the motor from the heat dissipation exhaust duct, and the heat dissipation airflow flows to the heat dissipation air inlet via the vent.

[0020] Optionally, the machine head is also provided with an outer cover shell, a third silencer, a first recessed portion corresponding to the first buckle, and a second recessed portion corresponding to the second buckle, wherein the first recessed portion and the second recessed portion are respectively part of the outer cover shell, the heat dissipation hood is located inside the outer cover shell, the third silencer is in the shape of a plate abutting against the inner surface of the outer cover shell and is located above the heat dissipation hood, and the shielding plate abuts against the third silencer upward.

[0021] Optionally, the head is also provided with a lower cover, an exhaust hood, an impeller, a first recessed portion corresponding to the first buckle, and a second recessed portion corresponding to the second buckle. The impeller is located below the motor, and the impeller rotates when driven by the motor to form a suction airflow. The exhaust hood is located on the upper side of the lower cover, and an air outlet duct is formed between the exhaust hood and the lower cover. The air outlet duct surrounds the periphery of the axis of the motor's rotating shaft, and the air flow discharged by the impeller flows through the air outlet duct; the lower cover is provided with a first part located at the bottom side of the first recessed portion, and a second part located at the bottom side of the second recessed portion, the first buckle is buckled on the first part, and the second buckle is buckled on the second part.

[0022] Optionally, the first part is provided with a first retaining rib, which protrudes into the first recessed portion, and is used to cooperate with the first buckle to prevent the first buckle from being detached from the first part; the second part is provided with a second retaining rib, which protrudes into the second recessed portion, and is used to cooperate with the second buckle to prevent the second buckle from being detached from the second part.

[0023] Optionally, the machine head is also provided with a heat dissipation hood and an outer cover shell, the heat dissipation hood is located on the upper side of the exhaust hood, and the heat dissipation and exhaust duct is formed between the heat dissipation hood, the exhaust hood and the lower cover; the first recessed portion and the second recessed portion are respectively part of the outer cover shell, the heat dissipation hood and the exhaust hood are located between the outer cover shell and the lower cover, and the outer cover shell is located on the upper side of the lower cover and covers the heat dissipation hood and the exhaust hood.

[0024] Optionally, the heat dissipation outlet of the motor is located on the bottom side of the motor, and the heat dissipation exhaust duct includes an annular portion surrounding the motor and an outlet portion located downstream of the annular portion, and relative to the air outlet window, the air outlet of the heat dissipation exhaust duct is located at an end of the outlet portion relatively close to the air outlet window; relative to the annular portion, the air outlet of the heat dissipation exhaust duct is located at an end of the outlet portion relatively far away from the annular portion.

[0025] Optionally, the first recessed portion is formed with a first groove, and the second recessed portion is formed with a second groove, the first groove is located on a side of the air inlet window facing the first buckle, and the second groove is located on a side of the air outlet window facing the second buckle, the air inlet window is directly connected to the interior of the first raised portion and the first groove, and the air outlet window is directly connected to the interior of the second raised portion and the second groove; the heat dissipation airflow enters the first raised portion through the first groove and the air inlet window in sequence and passes through the first silencer in the first raised portion, the heat dissipation airflow penetrates downward from the heat dissipation air inlet into the interior of the motor and flows out of the motor from the heat dissipation air outlet on the bottom side of the motor, after flowing out from the heat dissipation air outlet, the heat dissipation airflow enters the annular part of the heat dissipation exhaust duct, the heat dissipation airflow flows upward to the upper part of the annular part and then merges into the lead-out part of the heat dissipation exhaust duct, and is discharged from the heat dissipation exhaust duct through the air outlet of the heat dissipation exhaust duct and enters the second raised portion, the heat dissipation airflow passes through the second silencer in the second raised portion and is discharged through the air outlet window.

[0026] Optionally, the air inlet window faces the first buckle, and the air outlet window faces the second buckle; the first recessed portion forms a first groove, and the second recessed portion forms a second groove, the first buckle is at least partially accommodated in the first groove, and the second buckle is at least partially accommodated in the second groove, the first groove is located on the side of the air inlet window facing the first buckle, and the second groove is located on the side of the air outlet window facing the second buckle, the air inlet window is directly connected to the interior of the machine head and the first groove, and the air outlet window is directly connected to the interior of the machine head and the second groove.

[0027] Optionally, the nose is also provided with an outer cover shell, and the outer cover shell is also provided with a first raised portion and a second raised portion located on opposite sides of the outer cover shell, the first raised portion is located on a side of the outer cover shell corresponding to the first buckle, and the second raised portion is located on a side of the outer cover shell corresponding to the second buckle, the first recessed portion is recessed in the first raised portion, and the second recessed portion is recessed in the second raised portion, the air inlet window is directly connected to the interior of the first raised portion and the first groove, and the air outlet window is directly connected to the interior of the second raised portion and the second groove.

[0028] Optionally, the first groove and the second groove extend in the up and down directions respectively, the first recessed portion is provided with a first side upright wall and a second side upright wall, the second recessed portion is provided with a third side upright wall and a fourth side upright wall, the air inlet window is connected between the first side upright wall and the second side upright wall, the first side upright wall, the air inlet window and the second side upright wall form the first groove, the air outlet window is connected between the third side upright wall and the fourth side upright wall, and the third side upright wall, the air outlet window and the fourth side upright wall form the second groove.

[0029] Optionally, the motor is provided with a heat dissipation air inlet and a heat dissipation air outlet, and a heat dissipation exhaust duct is formed in the machine head. The heat dissipation airflow enters the first raised part via the first groove and the air inlet window in sequence and passes through the first silencer in the first raised part. The heat dissipation airflow enters the motor from the heat dissipation air inlet and is discharged from the motor from the heat dissipation air outlet and flows into the heat dissipation exhaust duct. The heat dissipation airflow is discharged from the heat dissipation exhaust duct from the air outlet of the heat dissipation exhaust duct and enters the second raised part. The heat dissipation airflow passes through the second silencer in the second raised part and is discharged from the machine head via the air outlet window.

[0030] Optionally, the motor is provided with a cooling fan, and the cooling fan rotates to form the cooling airflow; the first buckle is pivotally connected to one side of the dust bucket, and the second buckle is pivotally connected to the opposite side of the dust bucket, the first buckle part is accommodated in the first groove, and the second buckle part is accommodated in the second groove; the first buckle is provided with a first main board part, and the second buckle is provided with a second main board part, the first main board part faces the air inlet window, the first main board part is opposite to the air inlet window, and the upper end of the first buckle and the upper end of the first recessed part form a first opening; the second main board part faces the air outlet window, the second main board part is opposite to the air outlet window, and the upper end of the second buckle and the upper end of the second recessed part form a second opening, the first opening and the second opening are respectively facing upwards, and at least part of the cooling airflow discharged through the air outlet window flows upward out of the second opening.

[0031] The present application arranges the air inlet window and the air outlet window for motor heat dissipation on the left and right sides of the machine head, and the heat dissipation airflow enters from the air inlet window located on one of the left and right sides of the machine head and exits from the air outlet window located on the other side of the left and right sides of the machine head. In short, the heat dissipation airflow flows from one of the left and right sides of the machine head to the other side of the left and right sides of the machine head, and the relatively cold air inlet of the air inlet window and the relatively hot air outlet of the air outlet window are fully separated, which effectively avoids the mutual flow of the relatively cold air inlet and the relatively hot air outlet, promotes the improvement of the heat dissipation efficiency of the motor, and utilizes the first breathable silencer corresponding to the air inlet window and the second breathable silencer corresponding to the air outlet window on the motor heat dissipation airflow path to reduce the noise propagated on the motor heat dissipation airflow path; in summary, the layout of the motor heat dissipation inlet and outlet windows of the present application is practical, conducive to efficient heat dissipation of the motor and reduces the noise propagated by the motor heat dissipation airflow. The present application effectively utilizes the first recessed portion and the second recessed portion on opposite sides of the machine head that correspond to at least partially accommodating the first buckle and the second buckle to set the air inlet window and the air outlet window for motor heat dissipation, so that the first recessed portion and the second recessed portion form an inlet-outlet relationship, thereby expanding the overall use of the first recessed portion and the second recessed portion, and also helps to avoid opening the air inlet and outlet windows for motor heat dissipation at positions other than the first recessed portion and the second recessed portion of the machine head. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A three-dimensional diagram of the vacuum cleaner of the present application;

[0033] Figure 2 A three-dimensional diagram of the motor of the vacuum cleaner of the present application;

[0034] Figure 3 A vertical cross-sectional view of the vacuum cleaner head and filter of the present application in a combined state;

[0035] Figure 4 This is a bottom view of the vacuum cleaner head of the present application with the lower cover removed;

[0036] Figure 5 This is a three-dimensional diagram of the vacuum cleaner head of the present application after removing the outer cover and the handle;

[0037] Figure 6 An exploded view of the vacuum cleaner head of the present application (some components are not shown);

[0038] Figure 7 Another exploded view of the vacuum cleaner head of the present application (some components are not shown);

[0039] Figure 8 A three-dimensional diagram of the second buckle of the vacuum cleaner of the present application;

[0040] Fig. 9 Another three-dimensional view of the vacuum cleaner of the present application. DETAILED DESCRIPTION

[0041] Ginseng Figures 1 to 9 As shown, the vacuum cleaner of the present application includes a head 9, a dust collecting bucket 11, a first buckle 12, and a second buckle 13. The first buckle 12 and the second buckle 13 are located on opposite sides of the dust collecting bucket 11. The first buckle 12 and the second buckle 13 are respectively movably connected to the dust collecting bucket 11. The head 9 and the dust collecting bucket 11 are detachably assembled together through the first buckle 12 and the second buckle 13; the head 9 is provided with a motor 20, a first recessed portion 30, and a second recessed portion 40. The first recessed portion 30 and the second recessed portion 40 are located on opposite sides of the head 9. The first buckle 12 is at least partially accommodated in the first recessed portion 30, and the second buckle 13 is at least partially accommodated in the second recessed portion 40. The first recessed portion 30 is provided with an air inlet window 300, and the second recessed portion 40 is provided with an air outlet window 400. The heat dissipation airflow for the motor 20 enters the head 9 through the air inlet window 300 and is discharged from the head 9 through the air outlet window 400. With such a layout, the first recessed portion 30 and the second recessed portion 40 on the opposite sides of the machine head 9 corresponding to at least partially accommodating the first buckle 12 and the second buckle 13 are effectively used to set the air inlet window 300 and the air outlet window 400 for the heat dissipation of the motor 20, so that the first recessed portion 30 and the second recessed portion 40 form an inlet-outlet relationship, which expands the overall use of the first recessed portion 30 and the second recessed portion 40, and is also conducive to avoiding the opening of the air inlet and outlet windows 400 for the heat dissipation of the motor 20 at positions other than the first recessed portion 30 and the second recessed portion 40 of the machine head 9. In summary, the heat dissipation inlet and outlet windows 400 of the motor 20 of the present application The layout of the air outlet windows 400 is more practical; the heat dissipation airflow enters from the air inlet window 300 of the first recessed portion 30 located on one side of the machine head 9 and exits from the air outlet window 400 of the second recessed portion 40 located on the opposite side of the machine head 9. In short, it flows from one side of the machine head 9 to the other opposite side of the machine head 9. The relatively cold incoming air of the air inlet window 300 and the relatively hot outgoing air of the air outlet window 400 are on opposite sides of the machine head 9, so they are fully separated to avoid mutual flow, which is beneficial to the improvement of the heat dissipation efficiency of the motor 20; in summary, the layout of the heat dissipation inlet and outlet windows 400 of the motor 20 of the present application is practical and conducive to efficient heat dissipation.

[0042] The air inlet window 300 faces the first buckle 12, and the air outlet window 400 faces the second buckle 13. The rated power of the motor 20 is between 90w and 3100w, and can be between 1800w and 2000w. The capacity of the dust collecting bucket 11 is between 0.6 gallons and 40 gallons, and can be between 1 gallon and 19 gallons. Wheels 14 are provided on the bottom side of the dust collecting bucket 11.

[0043] The head 9 is also provided with a first ventilated muffler 21 corresponding to the air inlet window 300 and a second ventilated muffler 22 corresponding to the air outlet window 400. The first muffler 21 is located on the side of the air inlet window 300 facing away from the first buckle 12, and the second muffler 22 is located on the side of the air outlet window 400 facing away from the second buckle 13. Such a configuration can effectively reduce the noise generated by the heat dissipation airflow of the motor 20. The first muffler 21 is attached to the air inlet window 300, and the second muffler 22 is attached to the air outlet window 400. The first muffler 21 is plate-shaped and shielded on the inner side of the air inlet window 300, and the second muffler 22 is plate-shaped and shielded on the inner side of the air outlet window 400. The heat dissipation airflow passes through the air inlet window 300, the first muffler 21, the inside of the motor 20, the second muffler 22, and the air outlet window 400 in sequence. The first muffler 21 completely covers the air inlet window 300 at the inner side of the air inlet window 300 , and the second muffler 22 completely covers the air outlet window 400 at the inner side of the air outlet window 400 .

[0044] The machine head 9 is also provided with an outer cover shell 90 and a handle 91. The outer cover shell 90 is exposed outside the machine head 9. The handle 91 is connected to the outer cover shell 90. The first recessed portion 30 and the second recessed portion 40 are respectively a part of the outer cover shell 90. The air inlet window 300 and the air outlet window 400 are located on opposite sides of the outer cover shell 90. The outer cover shell 90 is provided with a first extension portion 900 for fixing the first muffler 21 and a second extension portion 901 for fixing the second muffler 22. The first extension portion 900 and the air inlet window 300 clamp the first muffler 21, and the second extension portion 901 and the air outlet window 400 clamp the second muffler 22. The air inlet window 300 and the air outlet window 400 are respectively integrally formed on the outer cover shell 90.

[0045] The air inlet window 300 is provided with a plurality of first grid plates 301 arranged in parallel, and the plurality of first grid plates 301 are located on the side of the air inlet window 300 facing away from the first buckle 12, and the air outlet window 400 is provided with a plurality of second grid plates 401 arranged in parallel, and the plurality of second grid plates 401 are located on the side of the air outlet window 400 facing away from the second buckle 13, and the first extension portion 900 and the plurality of first grid plates 301 clamp the first muffler 21, and the second extension portion 901 and the plurality of second grid plates 401 clamp the second muffler 22. The first extension portion 900, the second extension portion 901, the first grid plate 301, and the second grid plate 401 are respectively in an upright state.

[0046] The outer cover shell 90 is further provided with a first raised portion 3 and a second raised portion 4 located on opposite sides of the outer cover shell 90, the first raised portion 3 being located on a side of the outer cover shell 90 corresponding to the first buckle 12, the second raised portion 4 being located on a side of the outer cover shell 90 corresponding to the second buckle 13, the first recessed portion 30 being recessed in the first raised portion 3, the second recessed portion 40 being recessed in the second raised portion 4, the first muffler 21 being located in the first raised portion 3, and the second muffler 22 being located in the second raised portion 4. With such a design, the inner and outer spaces of the first raised portion 3 and the second raised portion 4 are fully utilized, the first muffler 21 and the second muffler 22 can be placed more conveniently, and the space utilization efficiency is also improved.

[0047] The first raised portion 3 is provided with a first outer wall 31 and a second outer wall 32 located on opposite sides thereof, the first outer wall 31 and the second outer wall 32 are located on opposite sides of the air inlet window 300, the first muffler 21 is located between the first outer wall 31 and the second outer wall 32, the first muffler 21 is in the shape of a plate facing the air inlet window 300, one side of the first muffler 21 is in contact with the first outer wall 31 (thereby enhancing the sealing between the side and the first outer wall 31 and enhancing the noise reduction effect), and the other opposite side of the first muffler 21 is in contact with the second outer wall 32 (thereby enhancing the sealing between the side and the second outer wall 32 and enhancing the noise reduction effect); the second raised portion 4 is provided with a third outer wall 41 and a fourth outer wall 42 located on opposite sides thereof, the third outer wall The third outer wall 41 and the fourth outer wall 42 are located on opposite sides of the air outlet window 400, the second silencer 22 is located between the third outer wall 41 and the fourth outer wall 42, the second silencer 22 is in the shape of a plate facing the air outlet window 400, one side of the second silencer 22 is against the third outer wall 41 (thereby enhancing the sealing between the side and the third outer wall 41 and enhancing the noise reduction effect), and the other opposite side of the second silencer 22 is against the fourth outer wall 42 (thereby enhancing the sealing between the side and the fourth outer wall 42 and enhancing the noise reduction effect); with the help of the first outer wall 31 and the second outer wall 32, the position stability of the first silencer 21 is also enhanced, and with the help of the third outer wall 41 and the fourth outer wall 42, the position stability of the second silencer 22 is also enhanced.

[0048] The head 9 is also provided with a lower cover 98, which covers the upper end of the dust collecting bucket 11, the first buckle 12 is buckled at the edge of one side of the lower cover 98, and the second buckle 13 is buckled at the edge of the other side of the lower cover 98. The outer cover shell 90 is installed on the upper side of the lower cover 98, and the first raised portion 3 is also provided with a first top wall 33 located at the top thereof, and the first top wall 33 is integrally connected to the top of the air inlet window 300, the top of the first outer side wall 31, and the second outer side wall 32. The top of the first muffler 21 is abutted against the first top wall 33, and the bottom of the first muffler 21 is abutted against the lower cover 98; the second raised portion 4 is also provided with a second top wall 43 located at the top thereof, and the second top wall 43 is integrally connected to the top of the air outlet window 400, the top of the third outer wall 41, and the top of the fourth outer wall 42, the top of the second muffler 22 is abutted against the second top wall 43, and the bottom of the second muffler 22 is abutted against the lower cover 98. Such a design is conducive to increasing the shielding range of the first muffler 21 and the second muffler 22 to improve the noise reduction performance, and is also conducive to the position stability of the first muffler 21 and the second muffler 22.

[0049] The first muffler 21 is perpendicular to the first outer wall 31 and the second outer wall 32, and the second muffler 22 is perpendicular to the third outer wall 41 and the fourth outer wall 42. The first muffler 21 and the second muffler 22 are respectively placed on the upper side of the lower cover 98, and the lower end of the first outer wall 31, the lower end of the second outer wall 32, the lower end of the third outer wall 41, the lower end of the fourth outer wall 42, the lower end of the air inlet window 300, and the lower end of the air inlet window 300 are respectively in contact with the lower cover 98. The first muffler 21 and the air inlet window 300 are located on the lower side of the first top wall 33, the second muffler 22 and the air outlet window 400 are located on the lower side of the second top wall 43, the first extension part 900 is located in the first raised part 3, and the first extension part 900 extends downward from the first top wall 33 as a whole, and the second extension part 901 is located in the second raised part 4, and the second extension part 901 extends downward from the second top wall 43 as a whole. The first extending portion 900 is located between the first outer wall 31 and the second outer wall 32 , and the second extending portion 901 is located between the third outer wall 41 and the fourth outer wall 42 .

[0050] The motor 20 is provided with a heat dissipation air inlet 200 and a heat dissipation air outlet 201, and a heat dissipation exhaust duct 92 is formed in the machine head 9. The heat dissipation airflow enters the motor 20 from the heat dissipation air inlet 200 and is discharged from the motor 20 from the heat dissipation air outlet 201 and flows into the heat dissipation exhaust duct 92. An air outlet 920 is provided at one end of the heat dissipation exhaust duct 92, and the air outlet window 400 is located downstream of the air outlet 920 of the heat dissipation exhaust duct 92. The second muffler 22 is located between the air outlet 920 of the heat dissipation exhaust duct 92 and the air outlet window 400. The heat dissipation exhaust duct 92 is fluidically connected between the heat dissipation air outlet 201 of the motor 20 and the inside of the second raised portion 4.

[0051] The air outlet 920 of the heat dissipation exhaust duct 92 and the air outlet window 400 are located on opposite sides of the second raised portion 4, the air outlet 920 of the heat dissipation exhaust duct 92 faces the air outlet window 400, and the air outlet 920 of the heat dissipation exhaust duct 92 is directly connected to the inside of the second raised portion 4. Such a design is simple and practical, and is conducive to improving the air outlet efficiency.

[0052] The head 9 is provided with a heat dissipation hood 93 for forming a heat dissipation exhaust duct 92, the heat dissipation hood 93 is located on the upper side of the heat dissipation exhaust duct 92, the air outlet 920 of the heat dissipation exhaust duct 92 is located at one end of the heat dissipation hood 93 relatively close to the air outlet window 400, the heat dissipation hood 93 is provided with a shielding plate 930, the heat dissipation air inlet 200 of the motor 20 is located at the top of the motor 20, the shielding plate 930 is located above the heat dissipation air inlet 200, and the projection formed by the vertical downward projection of the shielding plate 930 completely covers the heat dissipation air inlet 200, so that the shielding plate 930 can effectively shield and protect the heat dissipation air inlet 200, and inhibit debris from entering the heat dissipation air inlet 200.

[0053] The head 9 is also provided with a vibration-damping sealing gasket 94, the heat dissipation hood 93 is provided with a collar portion 931 and a vent 932, the baffle plate 930 is located on the upper side of the collar portion 931, and the vent 932 is formed between the collar portion 931 and the baffle plate 930, the vibration-damping sealing gasket 94 is sleeved on the upper end of the motor 20 and sealed between the upper end periphery of the motor 20 and the collar portion 931, so as to isolate the heat dissipation air inlet 200 of the motor 20 from the heat dissipation exhaust duct 92, thereby preventing part of the heat dissipation airflow from not flowing into the heat dissipation air inlet 200 but rushing into the heat dissipation exhaust duct 92 from between the upper end periphery of the motor 20 and the collar portion 931; the heat dissipation airflow flows to the heat dissipation air inlet 200 via the vent 932.

[0054] The machine head 9 is also provided with a third silencer 95, which is in the shape of a plate abutting against the inner surface of the outer cover shell 90 and is located above the heat dissipation hood 93. The shielding plate 930 is upwardly abutted against the third silencer 95, so that the shielding plate 930 effectively separates the heat dissipation air inlet 200 from the third silencer 95. The shielding plate 930 is in the shape of a disk, and the third silencer 95 is affixed to the inner surface of the outer cover shell 90. The first silencer 21, the second silencer 22, and the third silencer 95 can be made of common silencer sponges, such as polyether sponges, felt, polyurethane sponges, rock wool, glass wool, etc.

[0055] The machine head 9 is also provided with an exhaust hood 96 and an impeller. The impeller is located below the motor 20. The impeller rotates under the drive of the motor 20 to form a suction airflow to suck garbage. The lower cover 98 is provided with a suction air port 980, and the suction airflow flows to the impeller through the suction air port 980. The exhaust hood 96 is located on the upper side of the lower cover 98. An air outlet duct 99 is formed between the exhaust hood 96 and the lower cover 98. The air outlet duct 99 surrounds the outer periphery of the axis of the rotating shaft (not shown) of the motor 20. The airflow discharged by the impeller flows through the air outlet duct 99. The lower cover 98 is provided with a first part 981 located at the bottom side of the first recessed portion 30 and a second part 982 located at the bottom side of the second recessed portion 40. The first buckle 12 is buckled on the first part 981, and the second buckle 13 is buckled on the second part 982. The motor 20 is located in the middle area of ​​the exhaust hood 96, the impeller is fixed to the rotating shaft of the motor 20, and the air outlet duct 99 is a spiral duct. The first part 981 is provided with a first retaining rib 983, the first retaining rib 983 protrudes into the first recessed portion 30, and the first retaining rib 983 is used to cooperate with the first buckle 12 to prevent the first buckle 12 from being disengaged from the first part 981; the second part 982 is provided with a second retaining rib 984, the second retaining rib 984 protrudes into the second recessed portion 40, and the second retaining rib 984 is used to cooperate with the second buckle 13 to prevent the second buckle 13 from being disengaged from the second part 982.

[0056] The vacuum cleaner is also provided with an impeller housing 971, in which the impeller is located, and the impeller housing 971 is located between the exhaust hood 96 and the lower cover 98. The impeller housing 971 is provided with a plurality of exhaust ports 972 located in the circumferential direction of the impeller housing 971, and the airflow discharged by the impeller enters the air outlet duct 99 through the plurality of exhaust ports 972. The exhaust hood 96 is locked to the lower cover 98 by means of screws, and the outer cover 90 is locked to the lower cover 98 by means of screws. During assembly, the first muffler 21, the second muffler 22, and the third muffler 95 are first fixed to the outer cover 90, and then the aforementioned four are integrally installed to the lower cover 98. The heat dissipation hood 93 is located on the upper side of the exhaust hood 96, and the heat dissipation exhaust duct 92 is formed between the heat dissipation hood 93, the exhaust hood 96 and the lower cover 98; the heat dissipation hood 93 and the exhaust hood 96 are located between the outer cover shell 90 and the lower cover 98, and the outer cover shell 90 is located on the upper side of the lower cover 98 and covers the heat dissipation hood 93 and the exhaust hood 96.

[0057] The heat dissipation outlet 201 of the motor 20 is located on the bottom side of the motor 20, and the heat dissipation exhaust duct 92 includes an annular portion 921 surrounding the motor 20 and an outlet portion 922 located downstream of the annular portion 921. Relative to the air outlet window 400, the air outlet 920 of the heat dissipation exhaust duct 92 is located at an end of the outlet portion 922 that is relatively close to the air outlet window 400; relative to the annular portion 921, the air outlet 920 of the heat dissipation exhaust duct 92 is located at an end of the outlet portion 922 that is relatively far away from the annular portion 921.

[0058] The first recessed portion 30 is formed with a first groove 302, the second recessed portion 40 is formed with a second groove 402, the first buckle 12 is at least partially received in the first groove 302, the second buckle 13 is at least partially received in the second groove 402, the first groove 302 is located on the side of the air inlet window 300 facing the first buckle 12, the second groove 402 is located on the side of the air outlet window 400 facing the second buckle 13, the air inlet window 300 is directly connected to the interior of the head 9 and the first groove 302, the air outlet window 400 is directly connected to the interior of the head 9 and the second groove 402. The air inlet window 300 is directly connected to the interior of the first raised portion 3 and the first groove 302, the air outlet window 400 is directly connected to the interior of the second raised portion 4 and the second groove 402. The first groove 302 and the second groove 402 extend in the up and down directions respectively, the first recessed portion 30 is provided with a first side wall 303 and a second side wall 304, the second recessed portion 40 is provided with a third side wall 403 and a fourth side wall 404, the air inlet window 300 is connected between the first side wall 303 and the second side wall 304, the first side wall 303, the air inlet window 300, and the second side wall 304 form the first groove 302, the air outlet window 400 is connected between the third side wall 403 and the fourth side wall 404, the third side wall 403, the air outlet window 400, and the fourth side wall 404 form the second groove 402.

[0059] In this embodiment, the first buckle 12 and the second buckle 13 have basically the same structure and can be used interchangeably; the first buckle 12 is pivotally connected to one side of the dust collecting bucket 11, and the second buckle 13 is pivotally connected to the other side opposite to the dust collecting bucket 11; with the help of the first shaft portion (not shown) on one side of the dust collecting bucket 11 and the first shaft hole (not shown) of the first buckle 12, the first buckle 12 is pivotally connected to one side of the dust collecting bucket 11; with the help of the second shaft portion (not shown) on the other side opposite to the dust collecting bucket 11 and the second shaft hole 131 of the second buckle 13, the second buckle 13 is pivotally connected to the other side opposite to the dust collecting bucket 11; the first buckle 12 is provided with a first main board portion 120, and the second buckle 13 is provided with a second main board portion 130, the first main board portion 120 faces the air inlet window 300, and the second main board portion 130 faces the air outlet window 400; the motor 20 is provided with a cooling fan 202, and the cooling fan 202 is located at In the heat dissipation air inlet 200, the heat dissipation fan 202 rotates to form a heat dissipation airflow, and the heat dissipation airflow enters the first raised portion 3 through the first groove 302 and the air inlet window 300 in sequence and passes through the first silencer 21 in the first raised portion 3, and then the heat dissipation airflow flows to the vent 932 and further enters the motor 20 through the heat dissipation air inlet 200, and the heat dissipation airflow penetrates downward from the heat dissipation air inlet 200 into the motor 20 and flows out of the motor 20 from the heat dissipation air outlet 201 on the bottom side of the motor 20, and after flowing out from the heat dissipation air outlet 201, the heat dissipation airflow enters the annular portion 921 of the heat dissipation exhaust duct 92, and then flows upward to the upper part of the annular portion 921 and merges into the lead-out portion 922 of the heat dissipation exhaust duct 92, and is discharged from the heat dissipation exhaust duct 92 through the air outlet 920 of the heat dissipation exhaust duct 92 and enters the second raised portion 4, and then the heat dissipation airflow passes through the second silencer 22 and is discharged through the air outlet window 400. The first main board portion 120 is spaced apart from the air inlet window 300, and the upper end of the first buckle 12 and the upper end of the first recessed portion 30 form a first opening 70; the second main board portion 130 is spaced apart from the air outlet window 400, and the upper end of the second buckle 13 and the upper end of the second recessed portion 40 form a second opening 71, and the first opening 70 and the second opening 71 are respectively facing upward, and at least part of the heat dissipation airflow discharged through the air outlet window 400 flows upward out of the second opening 71, thereby merging upward into the environment outside the vacuum cleaner.

[0060] The vacuum cleaner is also provided with a filter 15, which is installed on the bottom side of the lower cover 98; the dust bucket 11 is provided with a suction port 110. When the vacuum cleaner is removing garbage, the garbage enters the dust bucket 11 from the suction port 110 along with the suction airflow, and then the suction airflow flows through the filter 15 and is filtered by the filter 15. The filtered suction airflow flows to the impeller through the suction air port 980, and the airflow discharged from the impeller flows into the outlet duct 99 and is discharged from the vacuum cleaner through the exhaust window 902 on the rear side of the outer cover shell 90.

Claims

1. A vacuum cleaner, comprising: A dust collecting bucket, a machine head, a first buckle, and a second buckle. The dust collecting bucket and the machine head are detachably assembled together through the first buckle and the second buckle. The machine head is provided with a motor, an air inlet window, an air outlet window, a first breathable silencer corresponding to the air inlet window, and a second breathable silencer corresponding to the air outlet window. The air inlet window and the air outlet window are located on the left and right sides of the machine head. The heat dissipation airflow for the motor enters the machine head through the air inlet window located on one of the left and right sides of the machine head and is discharged from the machine head through the air outlet window located on the other of the left and right sides of the machine head. The heat dissipation airflow passes through the air inlet window, the first silencer, the inside of the motor, the second silencer, and the air outlet window in sequence.

2. The vacuum cleaner according to claim 1, wherein: The first buckle and the second buckle are located on the left and right sides of the nose, and the nose is also provided with a first recessed portion corresponding to the first buckle and a second recessed portion corresponding to the second buckle. The first recessed portion and the second recessed portion are located on the left and right sides of the nose, the first buckle is at least partially accommodated in the first recessed portion, and the second buckle is at least partially accommodated in the second recessed portion. The air inlet window is arranged in the first recessed portion, and the air outlet window is arranged in the second recessed portion. The first silencer is located on the side of the air inlet window facing away from the first buckle, and the second silencer is located on the side of the air outlet window facing away from the second buckle.

3. The vacuum cleaner according to claim 2, wherein: The first silencer is in the shape of a plate and is shielded on the inner side of the air inlet window, the second silencer is in the shape of a plate and is shielded on the inner side of the air outlet window, and the capacity of the dust collecting bucket is between 0.6 gallons and 40 gallons.

4. The vacuum cleaner according to claim 2, wherein: The machine head is also provided with an outer cover shell and a handle, the handle is connected to the outer cover shell, the first recessed portion and the second recessed portion are respectively part of the outer cover shell, the air inlet window and the air outlet window are located on the left and right sides of the outer cover shell, the outer cover shell is provided with a first extension portion for fixing the first silencer and a second extension portion for fixing the second silencer, the first extension portion and the air inlet window clamp the first silencer, and the second extension portion and the air outlet window clamp the second silencer.

5. The vacuum cleaner according to claim 4, wherein: The air inlet window is provided with a plurality of first grid plates arranged in parallel, and the plurality of first grid plates are located on the side of the air inlet window facing away from the first buckle. The air outlet window is provided with a plurality of second grid plates arranged in parallel, and the plurality of second grid plates are located on the side of the air outlet window facing away from the second buckle. The first extension portion and the plurality of first grid plates clamp the first silencer, and the second extension portion and the plurality of second grid plates clamp the second silencer.

6. The vacuum cleaner according to claim 2, wherein: The machine head is also provided with an outer cover shell, and the outer cover shell is provided with a first raised portion and a second raised portion located on the left and right sides of the outer cover shell, the first raised portion is located on the side of the outer cover shell corresponding to the first buckle, and the second raised portion is located on the side of the outer cover shell corresponding to the second buckle, the first recessed portion is recessed in the first raised portion, and the second recessed portion is recessed in the second raised portion, the first silencer is located in the first raised portion, and the second silencer is located in the second raised portion.

7. The vacuum cleaner according to claim 6, wherein: The first raised portion is provided with a first outer side wall and a second outer side wall located on opposite sides thereof, the first outer side wall and the second outer side wall are located on opposite sides of the air inlet window, the first silencer is located between the first outer side wall and the second outer side wall, the first silencer is in the shape of a plate facing the air inlet window, one side of the first silencer is in contact with the first outer side wall, and the other opposite side of the first silencer is in contact with the second outer side wall; the second raised portion is provided with a third outer side wall and a fourth outer side wall located on opposite sides thereof, the third outer side wall and the fourth outer side wall are located on opposite sides of the air outlet window, the second silencer is located between the third outer side wall and the fourth outer side wall, the second silencer is in the shape of a plate facing the air outlet window, one side of the second silencer is in contact with the third outer side wall, and the other opposite side of the second silencer is in contact with the fourth outer side wall.

8. The vacuum cleaner according to claim 7, wherein: The machine head is also provided with a lower cover, which covers the upper end of the dust collecting bucket, the first buckle is buckled at the edge of one side of the lower cover, the second buckle is buckled at the edge of the opposite side of the lower cover, the outer cover shell is installed on the upper side of the lower cover, the first raised portion is also provided with a first top wall located at the top thereof, the first top wall is integrally connected to the top of the air inlet window, the top of the first outer wall, and the top of the second outer wall, the upper side of the first silencer is abutted against the first top wall, and the bottom side of the first silencer is abutted against the lower cover; the second raised portion is also provided with a second top wall located at the top thereof, the second top wall is integrally connected to the top of the air outlet window, the top of the third outer wall, and the top of the fourth outer wall, the upper side of the second silencer is abutted against the second top wall, and the bottom side of the second silencer is abutted against the lower cover.

9. The vacuum cleaner according to claim 8, wherein: The first silencer and the second silencer are respectively placed upright on the upper side of the lower cover, and the lower ends of the first outer wall, the second outer wall, the third outer wall, the fourth outer wall, the air inlet window, and the air outlet window are respectively in contact with the lower cover.

10. The vacuum cleaner according to claim 6, wherein: The first raised portion is also provided with a first top wall located at the top thereof, and the second raised portion is also provided with a second top wall located at the top thereof, the first silencer and the air inlet window are located on the lower side of the first top wall, and the second silencer and the air outlet window are located on the lower side of the second top wall, and the outer cover shell is provided with a first extension portion for fixing the first silencer and a second extension portion for fixing the second silencer, the first extension portion is located within the first raised portion and extends downward from the first top wall as a whole, and the second extension portion is located within the second raised portion and extends downward from the second top wall as a whole.

11. The vacuum cleaner according to claim 1, wherein: The motor is provided with a heat dissipation air inlet and a heat dissipation air outlet, and a heat dissipation exhaust duct is formed in the machine head. The heat dissipation airflow enters the motor from the heat dissipation air inlet and is discharged from the motor from the heat dissipation air outlet and flows into the heat dissipation exhaust duct. An air outlet is provided at one end of the heat dissipation exhaust duct, and the air outlet window is located downstream of the air outlet of the heat dissipation exhaust duct.

12. The vacuum cleaner according to claim 11, wherein: The head is also provided with a first recessed portion corresponding to the first buckle, a second recessed portion corresponding to the second buckle, a first raised portion corresponding to the first buckle, and a second raised portion corresponding to the second buckle. The first recessed portion is recessed in the first raised portion, and the second recessed portion is recessed in the second raised portion. The heat dissipation exhaust duct fluid is connected between the heat dissipation outlet of the motor and the interior of the second raised portion.

13. The vacuum cleaner according to claim 12, wherein: The air outlet and the air outlet window of the heat dissipation and exhaust duct are located on the left and right sides of the second raised part, the air outlet of the heat dissipation and exhaust duct faces the air outlet window, and the air outlet of the heat dissipation and exhaust duct is directly connected to the inside of the second raised part.

14. The vacuum cleaner according to claim 11, wherein: The machine head is provided with a heat dissipation hood for forming a heat dissipation exhaust duct, the air outlet of the heat dissipation exhaust duct is located at one end of the heat dissipation hood relatively close to the air outlet window, the heat dissipation hood is provided with a shielding plate, the heat dissipation air inlet of the motor is located at the top of the motor, the shielding plate is located above the heat dissipation air inlet, and the projection formed by the vertical downward projection of the shielding plate completely covers the heat dissipation air inlet.

15. The vacuum cleaner according to claim 14, wherein: The machine head is also provided with a vibration-damping sealing gasket, the heat dissipation hood is provided with a collar portion and a vent, the baffle is located on the upper side of the collar portion, the vent is formed between the collar portion and the baffle, the vibration-damping sealing gasket is sleeved on the upper end of the motor and sealed between the upper end periphery of the motor and the collar portion to isolate the heat dissipation air inlet of the motor from the heat dissipation exhaust duct, and the heat dissipation airflow flows to the heat dissipation air inlet via the vent.

16. The vacuum cleaner according to claim 14, wherein: The machine head is also provided with an outer cover shell, a third silencer, a first recessed portion corresponding to the first buckle, and a second recessed portion corresponding to the second buckle. The first recessed portion and the second recessed portion are respectively part of the outer cover shell. The heat dissipation hood is located inside the outer cover shell. The third silencer is in the shape of a plate abutting against the inner surface of the outer cover shell and is located above the heat dissipation hood. The shielding plate is upwardly abutted against the third silencer.

17. The vacuum cleaner according to claim 11, wherein: The head is also provided with a lower cover, an exhaust hood, an impeller, a first recessed portion corresponding to the first buckle, and a second recessed portion corresponding to the second buckle. The impeller is located below the motor, and the impeller rotates driven by the motor to form a suction airflow. The exhaust hood is located on the upper side of the lower cover, and an air outlet duct is formed between the exhaust hood and the lower cover. The air outlet duct surrounds the periphery of the axis of the motor's rotating shaft, and the airflow discharged by the impeller flows through the air outlet duct; the lower cover is provided with a first part located at the bottom side of the first recessed portion, and a second part located at the bottom side of the second recessed portion, the first buckle is buckled on the first part, and the second buckle is buckled on the second part.

18. The vacuum cleaner according to claim 17, wherein: The first part is provided with a first retaining rib, which protrudes into the first recessed portion, and is used to cooperate with the first buckle to prevent the first buckle from being detached from the first part; the second part is provided with a second retaining rib, which protrudes into the second recessed portion, and is used to cooperate with the second buckle to prevent the second buckle from being detached from the second part.

19. The vacuum cleaner according to claim 17, wherein: The machine head is also provided with a heat dissipation hood and an outer cover shell. The heat dissipation hood is located on the upper side of the exhaust hood. The heat dissipation and exhaust duct is formed between the heat dissipation hood, the exhaust hood and the lower cover. The first recessed portion and the second recessed portion are respectively part of the outer cover shell. The heat dissipation hood and the exhaust hood are located between the outer cover shell and the lower cover. The outer cover shell is located on the upper side of the lower cover and covers the heat dissipation hood and the exhaust hood.

20. The vacuum cleaner according to claim 12, wherein: The heat dissipation air outlet of the motor is located at the bottom side of the motor, and the heat dissipation exhaust duct includes an annular portion surrounding the motor and an outlet portion located downstream of the annular portion. Relative to the air outlet window, the air outlet of the heat dissipation exhaust duct is located at an end of the outlet portion relatively close to the air outlet window; relative to the annular portion, the air outlet of the heat dissipation exhaust duct is located at an end of the outlet portion relatively far away from the annular portion.

21. The vacuum cleaner according to claim 20, wherein: The first recessed portion is formed with a first groove, and the second recessed portion is formed with a second groove, the first groove is located on a side of the air inlet window facing the first buckle, and the second groove is located on a side of the air outlet window facing the second buckle, the air inlet window is directly connected to the interior of the first raised portion and the first groove, and the air outlet window is directly connected to the interior of the second raised portion and the second groove; the heat dissipation airflow enters the first raised portion through the first groove and the air inlet window in sequence and passes through the first silencer in the first raised portion, the heat dissipation airflow penetrates downward from the heat dissipation air inlet into the interior of the motor and flows out of the motor from the heat dissipation air outlet on the bottom side of the motor, after flowing out from the heat dissipation air outlet, the heat dissipation airflow enters the annular part of the heat dissipation exhaust duct, the heat dissipation airflow flows upward to the upper part of the annular part and then merges into the lead-out part of the heat dissipation exhaust duct, and is discharged from the heat dissipation exhaust duct through the air outlet of the heat dissipation exhaust duct and enters the second raised portion, the heat dissipation airflow passes through the second silencer in the second raised portion and is discharged through the air outlet window.

22. The vacuum cleaner according to claim 1, wherein: The air inlet window faces the first buckle, and the air outlet window faces the second buckle; the machine head is also provided with a first recessed portion corresponding to the first buckle and a second recessed portion corresponding to the second buckle, the first recessed portion forms a first groove, the second recessed portion forms a second groove, the first buckle is at least partially accommodated in the first groove, the second buckle is at least partially accommodated in the second groove, the first groove is located on the side of the air inlet window facing the first buckle, the second groove is located on the side of the air outlet window facing the second buckle, the air inlet window is directly connected to the interior of the machine head with the first groove, and the air outlet window is directly connected to the interior of the machine head with the second groove.

23. The vacuum cleaner according to claim 22, wherein: The nose is also provided with an outer cover shell, and the outer cover shell is also provided with a first raised portion and a second raised portion located on opposite sides of the outer cover shell, the first raised portion is located on a side of the outer cover shell corresponding to the first buckle, and the second raised portion is located on a side of the outer cover shell corresponding to the second buckle, the first recessed portion is recessed in the first raised portion, and the second recessed portion is recessed in the second raised portion, the air inlet window is directly connected to the interior of the first raised portion and the first groove, and the air outlet window is directly connected to the interior of the second raised portion and the second groove.

24. The vacuum cleaner according to claim 22, wherein: The first groove and the second groove extend in the up and down directions respectively, the first recessed portion is provided with a first side upright wall and a second side upright wall, the second recessed portion is provided with a third side upright wall and a fourth side upright wall, the air inlet window is connected between the first side upright wall and the second side upright wall, the first side upright wall, the air inlet window and the second side upright wall form the first groove, the air outlet window is connected between the third side upright wall and the fourth side upright wall, the third side upright wall, the air outlet window and the fourth side upright wall form the second groove.

25. The vacuum cleaner according to claim 23, wherein: The first silencer is located in the first raised portion, and the second silencer is located in the second raised portion. The first silencer is in the shape of a plate and is shielded by the inner side of the air inlet window, and the second silencer is in the shape of a plate and is shielded by the inner side of the air outlet window. The motor is provided with a heat dissipation air inlet and a heat dissipation air outlet, and a heat dissipation exhaust duct is formed in the machine head. The heat dissipation airflow enters the first raised portion through the first groove and the air inlet window in sequence and passes through the first silencer in the first raised portion. The heat dissipation airflow enters the motor from the heat dissipation air inlet and is discharged from the motor from the heat dissipation air outlet and flows into the heat dissipation exhaust duct. The heat dissipation airflow is discharged from the heat dissipation exhaust duct from the air outlet of the heat dissipation exhaust duct and enters the second raised portion. The heat dissipation airflow passes through the second silencer in the second raised portion and is discharged from the machine head through the air outlet window.

26. The vacuum cleaner according to claim 22, wherein: The motor is provided with a cooling fan, and the cooling fan rotates to form the cooling airflow; the first buckle is pivotally connected to one side of the dust bucket, and the second buckle is pivotally connected to the opposite side of the dust bucket, the first buckle part is accommodated in the first groove, and the second buckle part is accommodated in the second groove; the first buckle is provided with a first main board part, and the second buckle is provided with a second main board part, the first main board part faces the air inlet window, the first main board part is opposite to the air inlet window, and the upper end of the first buckle and the upper end of the first recessed part form a first opening; the second main board part faces the air outlet window, the second main board part is opposite to the air outlet window, and the upper end of the second buckle and the upper end of the second recessed part form a second opening, the first opening and the second opening are respectively facing upwards, and at least part of the cooling airflow discharged through the air outlet window flows upward out of the second opening.

27. The vacuum cleaner according to any one of claims 1 to 26, wherein: The rated power of the motor is between 90W and 3100W.

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