CN215762352U - Fan and cleaning equipment - Google Patents

Abstract

The application relates to the technical field of air conditioning, and provides a fan and cleaning equipment. The fan includes casing, movable vane wheel, muffler. The shell is provided with an air inlet, an air outlet and an air duct communicated with the air inlet and the air outlet. The movable impeller is rotatably arranged in the air duct. The silencer is arranged at the air outlet, a plurality of air inlet holes, a plurality of air outlet holes and a silencing cavity are formed in the silencer, the air inlet holes are communicated with the air channel and the silencing cavity, and the air outlet holes are communicated with the silencing cavity. On one hand, a silencer with a silencing cavity is arranged at an air outlet of the fan, negative pressure generated by high-speed rotation of the movable impeller drives airflow in the air duct to be pressed into the air duct along the air inlet, then the airflow flows into the silencing cavity through the air outlets through the plurality of air inlets, and the airflow is more uniform in flow field after flowing into the silencing cavity through the plurality of air inlets. On the other hand, the muffler can avoid sewage absorption to arouse in the amortization sponge smelly problem, effectively weakens the pneumatic noise of fan simultaneously, improves the hearing and the sound quality, promotes the user and uses experience.

Description

Fan and cleaning equipment

Technical Field

The application relates to the technical field of cleaning equipment, in particular to a fan and cleaning equipment.

Background

For the floor cleaning machine also known as water machine, in order to prevent the foul smell that the sewage liquid is retained and is caused, material such as sound absorption cotton is not allowed to use in the fan for like this, make the noise that the fan arouses great, user experience is poor.

SUMMERY OF THE UTILITY MODEL

In view of this, the present disclosure provides a fan and a cleaning device, where the fan has low noise.

In order to achieve the above purpose, the technical solution of the embodiment of the present application is implemented as follows:

an aspect of an embodiment of the present application provides a fan, including:

the shell is provided with an air inlet, an air outlet and an air duct communicated with the air inlet and the air outlet;

the movable impeller is rotatably arranged in the air duct;

the silencer is arranged at the air outlet, a plurality of air inlet holes, a plurality of air outlet holes and a silencing cavity are formed in the silencer, the air inlet holes are communicated with the air duct and the silencing cavity, and the air outlet holes are communicated with the silencing cavity.

In some embodiments, the silencer includes a first perforated plate covering the air outlet, the air inlet being formed on the first perforated plate.

In some embodiments, the silencer includes a second perforated plate extending circumferentially along the silencer, and the outlet holes are formed in the second perforated plate.

In some embodiments, the muffler includes an end plate and an inner ring plate, the second perforated plate surrounds the outside of the inner ring plate, the end plate and the first perforated plate are located at two axial sides of the inner ring plate, and the first perforated plate, the second perforated plate, the end plate and the inner ring plate cooperate together to form the muffling chamber.

In some embodiments, the casing includes a cover covering the impeller, the cover being formed with a rib extending toward the silencer, and the second perforated plate being formed with a notch into which the rib is inserted.

In some embodiments, the housing is formed with a containing cavity, the air duct surrounds the containing cavity and is independent of the air duct, the fan further includes a motor disposed in the containing cavity, and a rotating shaft of the motor is connected with the movable impeller.

In some embodiments, the muffler is formed with a routing cavity communicating with the accommodating cavity, and the muffling cavity surrounds the routing cavity and is independent from the routing cavity.

In some embodiments, the housing includes an outer casing and an inner casing, the inner casing is sleeved in the outer casing, the inner casing forms the accommodating cavity, the air inlet is formed on the outer casing, the space between the inner casing and the outer casing is the air duct, and the air outlet is formed at a terminal end of the air duct far away from the air inlet.

In some embodiments, the fan includes a fixed impeller disposed within the air duct, the fixed impeller directing airflow from the air inlet to the air outlet.

Another aspect of the application provides a cleaning appliance comprising a blower as described in any one of the above.

The utility model provides a fan, on the one hand, sets up the muffler that has the amortization chamber in the air outlet department of fan, and the negative pressure that the high-speed rotation of movable vane produced drives the air current in the wind channel and impresses in the wind channel along the air intake, flows into the amortization chamber through a plurality of inlet ports via the air outlet afterwards, and after a plurality of inlet ports of air current route flowed into the amortization chamber, the velocity of flow of air current will descend, and the flow field is more even. On the other hand, the muffler has replaced the amortization sponge that easily receives sewage dip-dyeing and only can eliminate the soft damping pad of structure vibration noise, can avoid sewage to adsorb the smelly problem that arouses in the amortization sponge, effectively weakens the pneumatic noise of fan simultaneously, improves the auditory sensation and the sound quality, promotes the user and uses experience.

Drawings

Fig. 1 is a schematic structural diagram of a fan in an embodiment of the present application;

FIG. 2 is a cross-sectional view A-A of the structure shown in FIG. 1, wherein the dashed arrows schematically illustrate the direction of flow of the gas stream;

FIG. 3 is an exploded view of the structure shown in FIG. 1;

FIG. 4 is a schematic structural diagram of a silencer of a blower according to an embodiment of the present disclosure;

FIG. 5 is a schematic diagram of the structure shown in FIG. 4 from another perspective;

fig. 6 is a B-B sectional view of the structure shown in fig. 5.

Description of reference numerals:

a fan 100; a housing 1; the movable impeller 2; a muffler 3; a fixed impeller 4; a motor 5; a housing 11; a convex strip 111; a moving impeller shell 112; a housing 113; an inner shell 12; a connecting plate 13; an air inlet 1 a; an air outlet 1 b; an air duct 1 c; the accommodation chamber 1 d; an air intake hole 3 a; an air outlet hole 3 b; a sound-deadening chamber 3 c; a wiring cavity 3 d; the first perforated plate 31; a second perforated plate 32; the notches 32 a; an end plate 33; an inner annular plate 34.

Detailed Description

It should be noted that the various embodiments/implementations provided in this application can be combined with each other without contradiction. The detailed description in the specific embodiments should be understood as an illustration of the spirit of the application and not as an undue limitation of the application.

The directional terms used in the description of the present application are used for convenience in describing the present application and for simplicity in description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present application.

Referring to fig. 1, 2, 3 and 4, in one aspect, an embodiment of the present application provides a fan, where the fan 100 includes a casing 1, a movable impeller 2 and a silencer 3. The housing 1 is formed with an air inlet 1a, an air outlet 1b, and an air duct 1c communicating the air inlet 1a and the air outlet 1 b. The movable impeller 2 is rotatably provided in the air duct 1 c. Muffler 3 sets up in air outlet 1b department, and muffler 3 is formed with a plurality of inlet ports 3a, a plurality of venthole 3b and amortization chamber 3c, and inlet port 3a communicates wind channel 1c and amortization chamber 3c, and venthole 3b communicates with amortization chamber 3 c.

In the prior art, a fan usually adopts silencing sponge or a soft damping pad to implement noise reduction, but the mode of noise reduction of the soft damping pad can only reduce the sound caused by structural vibration, and cannot reduce the pneumatic noise generated by high-speed airflow. The noise reduction mode of the noise reduction sponge is easy to smell on floor washing machines and the like, and the noise reduction sponge is not applicable.

The fan that this application embodiment provided, on the one hand, set up the muffler 3 that has the amortization chamber 3c in fan 100's air outlet 1b department, the negative pressure that movable vane 2 high-speed rotation produced drives the air current in the wind channel 1c and impresses in the wind channel 1c along air intake 1a, flows into the amortization chamber 3c through a plurality of inlet ports 3a via air outlet 1b afterwards, and after the air current flowed into the amortization chamber 3c through a plurality of inlet ports 3a, the velocity of flow of air current will descend, and the flow field is more even. The air flow passes through the silencing cavity 3c and then is discharged out of the fan 100 through the air outlet holes 3b, so that the uniformity of an air flow field is further improved. On the other hand, muffler 3 has replaced the amortization sponge that easily receives sewage dip-dyeing and only can eliminate the soft damping pad of structure vibration noise, the resistance friction of air current route aperture, partial acoustic energy turns into the heat dissipation, thereby realize making an uproar, not only can avoid sewage absorption the smelly problem that arouses in the amortization sponge, can effectively weaken fan 100's aerodynamic noise, be convenient for still through the concrete structure size of design muffler 3, can eliminate the sound of appointed frequency section, improve the sense of hearing and sound quality, promote user's use and experience.

In one embodiment, referring to fig. 2 and 6, the silencer 3 includes a first perforated plate 31. The first perforated plate 31 covers the air outlet 1b, and the air inlet holes 3a are formed on the first perforated plate 31. That is, the corresponding first perforated plate 31 may be provided according to the shape of the air outlet 1b so that the air outlet 1b can be covered by the first perforated plate 31. Therefore, the first perforated plate 31 covering the air outlet 1b can enable the air flow in the air duct 1c to flow into the silencing cavity 3c through the air inlet 3a, so as to ensure that the air flow field flowing in and out of the air cavity is more uniform.

Illustratively, the first perforated plate 31 is an annular structure, and the air inlet holes 3a are circular micropores uniformly arranged on the first perforated plate 31 at a predetermined interval.

In one embodiment, referring to fig. 5, the first perforated plate 31 has a thickness of no greater than 3 mm. So, be convenient for keep the silencer to have higher sound absorption coefficient, have the sound absorption effect of preferred.

In one embodiment, referring to fig. 2 and 6, the silencer 3 includes a second perforated plate 32 extending along the circumferential direction of the silencer 3, and the outlet holes 3b are formed in the second perforated plate 32. That is to say, second perforated plate 32 sets up in the circumference of muffler 3, and venthole 3b is located second perforated plate 32, and consequently the air current that flows out from amortization chamber 3c flows along the circumference of muffler 3, and the air current flow direction distribution after flowing out fan 100 is around amortization chamber 3c, and the flow field is more smooth-going, has further reduced aerodynamic noise.

In one embodiment, referring to FIG. 5, the second perforated plate 32 has a thickness of no greater than 3 mm. So, be convenient for keep the silencer to have higher sound absorption coefficient, have the sound absorption effect of preferred.

In one embodiment, referring to fig. 2 and 6, the muffler 3 includes an end plate 33 and an inner ring plate 34, the second perforated plate 32 surrounds the outer ring plate 34, the end plate 33 and the first perforated plate 31 are located on two axial sides of the inner ring plate 34, and the first perforated plate 31, the second perforated plate 32, the end plate 33 and the inner ring plate 34 cooperate to form a sound-deadening chamber 3 c. That is, the inner ring plate 34 and the end plate 33 serve as a connection for the arrangement of the first perforated plate 31 and the second perforated plate 32. Illustratively, the first perforated plate 31 is formed on the outer circumferential wall of the inner ring plate 34, the first perforated plate 31 and the inner ring plate 34 can be an integrally formed structure, so that the structural strength of the silencer 3 is good, of course, the first perforated plate 31 and the inner ring plate 34 can also be connected in a detachable connection manner such as clamping, so that the silencer 3 has a simple part processing technology, and is good in interchangeability when parts are damaged or failed. Similarly, one end of the second perforated plate 32 is attached to an end plate 33, and the end plate 33 and the second perforated plate 32 may be integrally formed or detachably attached. When the first perforated plate 31, the second perforated plate 32, the inner ring plate 34, and the end plate 33 are all integrally formed, the air flow can only flow into the silencing chamber 3c through the air inlet holes 3a and flow out of the silencing chamber 3c through the air outlet holes 3 b. Thus, the silencing cavity 3c has no air leakage and better noise reduction performance.

In an exemplary embodiment, under a certain experimental condition, the broadband aerodynamic noise of the fan 100 provided by the embodiment of the present application is reduced by 3-6 db (a) from an original state, and the noise reduction effect is obvious.

In one embodiment, referring to fig. 1, 2 and 3, the casing 1 includes a cover 11 covering the impeller 2, the cover 11 is formed with a protrusion 111 extending toward the silencer 3, the second perforated plate 32 is formed with a notch 32a, and the protrusion 111 is inserted into the notch 32 a. That is to say, the end of the housing 11 extending toward the muffler 3 abuts against the end of the second perforated plate 32 away from the end plate 33, and the protruding strip 111 is inserted into the notch 32a formed by the second perforated plate 32, so that the positioning and installation of the muffler 3 and the housing 11 can be facilitated. On the other hand, the movable impeller 2 is located in the housing 11, so that the structure of the fan 100 is more compact, meanwhile, the movable impeller 2 is more stable during high-speed rotation, and the safety of the fan 100 is better.

The quantity of sand grip 111 and the breach 32a that corresponds is not limited, and is exemplary, sand grip 111 and breach 32a one-to-one set up, and housing 11 is formed with along the three sand grip 111 of housing 11 circumference equipartition, and the second perforated plate 32 who corresponds rather than is formed with three breach 32a, so, housing 11 is more stable with the butt cooperation of second perforated plate 32, and is difficult not hard up.

Since the aperture of the air inlet hole 3a has a certain influence on the sound absorption effect, in an exemplary embodiment, the aperture of the air inlet hole 3a is between 1mm and 3 mm. Therefore, the silencer has higher sound absorption coefficient and better sound absorption effect.

In one embodiment, the diameter of the air outlet 3b is between 1mm and 3 mm. Therefore, the silencer has higher sound absorption coefficient and better sound absorption effect.

In an embodiment, referring to fig. 1 and fig. 2, the housing 1 is formed with an accommodating cavity 1d, the air duct 1c surrounds the accommodating cavity 1d and is independent from the air duct 1c, the blower 100 further includes a motor 5 disposed in the accommodating cavity 1d, and a rotating shaft of the motor 5 is connected to the movable impeller 2. The motor 5 is accommodated in the accommodating cavity 1d of the casing 1, that is, the motor 5 and the movable impeller 2 are both arranged in the casing 1, so that the whole structure of the fan 100 is more compact and the stability is higher. The air duct 1c is independent of the accommodating cavity 1d, that is, the air duct 1c is not communicated with the accommodating cavity 1d, and under a humid environment with sewage and impurities, the air flow in the air duct 1c cannot contaminate the motor 5 in the accommodating cavity 1d, so that the working reliability of the fan 100 is ensured.

In an embodiment, referring to fig. 1, fig. 2 and fig. 6, the muffler is formed with a routing cavity 3d communicated with the accommodating cavity 1d, and the muffling cavity 3c surrounds the routing cavity 3d and is independent from the routing cavity 3 d. The wiring cavity 3d is convenient for wiring wires and the like of the motor 5, and the electrical safety is ensured. The silencing cavity 3c is independent of the wiring cavity 3d, and the accommodating cavity 1d is independent of the air duct 1c, namely, the silencing cavity 3c is not communicated with the wiring cavity 3 d. Therefore, the lead of the motor 5 is not influenced by humid air such as air flow and the like, and the motor 5 can be ensured to run safely and stably.

In an exemplary embodiment, referring to fig. 1 and fig. 2, the housing 1 includes an outer casing 11 and an inner casing 12, the inner casing 12 is sleeved in the outer casing 11, the inner casing 12 is formed with an accommodating cavity 1d, an air inlet 1a is formed on the outer casing 11, a space between the inner casing 12 and the outer casing 11 is an air duct 1c, and an air outlet 1b is formed at a terminal of the air duct 1c far away from the air inlet 1 a. The inner shell 12 can separate the air duct 1c from the accommodating cavity 1d, so that the accommodating cavity 1d and the air duct 1c are independent from each other, and the functions of the chambers are ensured to be not interfered.

In one embodiment, referring to fig. 2 and 3, the housing 1 includes a connecting plate 13 disposed between the outer casing 11 and the inner casing 12, and the outer casing 11 and the inner casing 12 are connected by the connecting plate 13.

In one embodiment, referring to fig. 2 and 3, casing 11 includes impeller cup 112 and casing 113, and impeller cup 112 and casing 113 are detachably connected, such as by snap-fitting. The air inlet 1a is formed on the impeller cover 112, and the impeller 2 is located in the impeller cover 112. Like this, because movable vane wheel 2 is located outside inner shell 12, and motor 5 sets up in the chamber 1d that holds of inner shell 12, integrated into one piece between inner shell 12 and the dustcoat 113, when air intake 1a is less to lead to inconvenient installation movable vane wheel 2, in order to make movable vane wheel 2 can install to wind channel 1c smoothly, movable vane wheel cover 112 can separate with dustcoat 113, movable vane wheel 2 installs behind motor 5's the pivot, again with movable vane wheel cover 112 installation to dustcoat 113 on, so, it can provide movable vane wheel 2's installation space to set up movable vane wheel cover 112.

In one embodiment, referring to fig. 2 and 3, the connecting plate 13 is located between the impeller cup 112 and the inner casing 12, and the impeller cup 112 and the inner casing 12 are connected by the connecting plate 13. For example, the impeller cup 112, the inner shell 12, and the connecting plate 13 are integrally formed. Thus, the air duct 1c has good air tightness and the housing 1 has high structural strength.

In one embodiment, referring to fig. 2, the movable impeller 2 is located at the air inlet 1 a. The movable impeller 2 is provided with the air inlet 1a, so that the air pressure at the air inlet 1a can be ensured to be maximum, and the air positioned outside can more efficiently flow into the air inlet 1 a.

In one embodiment, referring to fig. 2, the fan 100 includes a fixed impeller 4 disposed in the air duct 1c, and the fixed impeller 4 guides the airflow from the air inlet 1a to the air outlet 1 b. The fixed impeller 4 in the air duct 1c can guide the air flow in the air duct 1c, so that the situation that the flow field has a vortex flow after the gathering of the through-flow section in the air duct 1c is reduced, the air flow circulates smoothly in the air duct 1c, and the air performance of the fan 100 is better.

Another aspect of the present application provides a cleaning apparatus comprising a blower 100 according to any of the embodiments of the present application.

In an exemplary embodiment, the cleaning apparatus is a scrubber. The cleaning device comprises a clean water tank, a sewage tank and a dust generating system, wherein the clean water tank is positioned above the fan 100, the sewage tank is positioned below the fan 100, the dust generating system is used for being in contact with the ground to scrub the ground, cleaning liquid in the clean water tank can flow out to the ground, and sewage on the ground flows into the sewage tank under the action of the fan 100. In the process of cleaning the ground, the fan 100 is in a working state, the cleaning liquid in the water purifying tank flows out to the ground, and the sewage generated after cleaning enters the sewage tank under the negative pressure effect generated by the fan 100. Owing to adopt the muffler to replace the amortization sponge that easily receives sewage dip-dyeing, can avoid sewage absorption smelly problem that arouses in the amortization sponge, effectively weaken the pneumatic noise of fan simultaneously, improved the sense of hearing and sound quality, promoted user and used experience.

In some embodiments, the dusting system comprises a roller brush. The cleaning device comprises a water pump, and the water purification tank can be dispersedly sprayed onto the roller brush through the water purification flow channel under the action of the water pump and the like. So, can avoid clean liquid to concentrate in a large number and flow to ground through the flow of water pump control clean liquid, improve user experience.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and all the changes or substitutions should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. A fan, comprising:

the shell is provided with an air inlet, an air outlet and an air duct communicated with the air inlet and the air outlet;

the movable impeller is rotatably arranged in the air duct;

the silencer is arranged at the air outlet, a plurality of air inlet holes, a plurality of air outlet holes and a silencing cavity are formed in the silencer, the air inlet holes are communicated with the air duct and the silencing cavity, and the air outlet holes are communicated with the silencing cavity.

2. The fan of claim 1, wherein the silencer comprises a first perforated plate that covers the air outlet, and wherein the air inlet is formed in the first perforated plate.

3. The fan of claim 2 wherein the silencer includes a second perforated plate extending circumferentially around the silencer, the outlet holes being formed in the second perforated plate.

4. The fan of claim 3 wherein the silencer includes an end plate and an inner annular plate, the second perforated plate surrounding the inner annular plate, the end plate and the first perforated plate being located on opposite axial sides of the inner annular plate, the first perforated plate, the second perforated plate, the end plate, and the inner annular plate cooperating together to form the silencing chamber.

5. The fan of claim 3, wherein the housing comprises a shroud disposed over the impeller, the shroud being formed with ribs extending toward the silencer, the second perforated plate being formed with notches into which the ribs are inserted.

6. The fan according to any one of claims 1 to 4, wherein the housing is formed with a receiving cavity, the air duct surrounds the receiving cavity and is independent from the air duct, the fan further comprises a motor disposed in the receiving cavity, and a rotating shaft of the motor is connected to the movable impeller.

7. The fan set forth in claim 6 wherein the silencer is formed with a routing cavity in communication with the receiving cavity, the silencing cavity surrounding and being independent of the routing cavity.

8. The blower of claim 6, wherein the housing includes an outer casing and an inner casing, the inner casing is disposed in the outer casing, the inner casing forms the receiving cavity, the air inlet is formed on the outer casing, a space between the inner casing and the outer casing is the air duct, and the air outlet is formed at a distal end of the air duct away from the air inlet.

9. The fan of any one of claims 1 to 5, wherein the fan comprises a fixed impeller disposed in the air duct, the fixed impeller directing airflow from the air inlet to the air outlet.

10. A cleaning device, characterized in that the cleaning device comprises a fan according to any one of claims 1-9.

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