CN217539120U - Surface cleaning machine that noise reduction effect is good - Google Patents

Abstract

The utility model discloses a surface cleaning machine that noise reduction effect is good, fan subassembly in casing and casing, the motor casing, the blast shield outside the motor are established to fan subassembly including motor, cover, the blast shield has the chamber of induced drafting in order to follow fan subassembly front end suction air current, form the passageway of airing exhaust between the outer wall of motor casing and the blast shield, the passageway of airing exhaust and the chamber intercommunication of induced drafting are in order to the rear end air guide to the fan subassembly, the fan subassembly still includes the wind scooper, the one end of wind scooper with the blast shield butt, the other end extends to the rear end direction of fan subassembly to the air current that the guide came out from exhaust passage flows along the lateral wall of motor casing. This technical scheme makes the air current follow the air exhaust passageway and come out the back and upwards flow in order along the surface of motor casing, and pressure slowly releases prevents that the air current from coming out the sudden release of back pressure and causing the turbulent flow from the air exhaust passageway, reduces the turbulent flow and produces air current noise and vibration.

Description

Surface cleaning machine that noise reduction effect is good

Technical Field

The utility model relates to a cleaning device technical field, concretely relates to surface cleaning machine that noise reduction effect is good.

Background

With the increasing demand for improved living standards, surface cleaning devices such as floor washers which can be conveniently cleaned are favored by more and more households, and users can realize wet cleaning of household floors with a small amount of simple participation. The vacuum motor that sets up in these burnishers can drive the impeller that breathes in and absorb the inside air of slop pail, thereby makes and hold the inside vacuum of bucket and suck subaerial sewage in the slop pail.

In the prior art, a motor chamber of the floor cleaning machine has a function of fixing a motor, an air duct for guiding out air exhausted by the motor is arranged between the motor chamber and a machine body shell, and the air duct of the motor chamber is connected with an air outlet of the machine body shell so as to exhaust the air out of the machine body shell. The above structure has the following problems: when cold air flows in the air duct after entering the motor, airflow is discharged from the air exhaust channel and pressure is suddenly released to cause turbulent flow, so that larger vibration noise is easily generated.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that the noise reduction effect is better for at least part overcomes the big problem of above-mentioned current surface cleaning machine noise at work, provides a surface cleaning machine.

In order to achieve the above object, the utility model discloses a following technical scheme can realize:

the utility model provides a surface cleaning machine that noise reduction effect is good, includes the fan subassembly in casing and the casing, the fan subassembly includes the motor, covers motor casing, the fan shroud of establishing outside the motor, the fan shroud has the chamber of induced drafting in order to follow the fan subassembly front end and inhale the air current, form the passageway of airing exhaust between the outer wall of motor casing and the fan shroud, the passageway of airing exhaust with the chamber intercommunication of induced drafting in order to the rear end air guide of fan subassembly, the fan subassembly still includes the wind scooper, the one end of wind scooper with the fan shroud butt, the other end extends to the rear end direction of fan subassembly to the air current that the guide came out from exhaust passage flows along the lateral wall of motor casing.

Further, the maximum outer diameter of the motor case is smaller than the maximum outer diameter of the blower cover.

Further, the projection of the motor shell on the blast hood is smaller than the outer diameter of the air exhaust channel.

Furthermore, the fan assembly is clamped in the motor cover, the other end of the air guide cover is abutted to the motor cover, and an air exhaust groove and/or an air exhaust hole are/is formed in the side wall of the air guide cover.

Furthermore, the blast hood comprises a front hood and a rear hood, the front hood forms the outer wall of the air suction cavity, the rear hood forms the outer wall of the exhaust channel, and the air guide hood is abutted to the front hood.

Furthermore, the blast hood comprises a front hood and a rear hood, the front hood forms the outer wall of the air suction cavity, the rear hood forms the outer wall of the exhaust channel, and the air guide hood is abutted to the rear hood.

Further, the motor cover comprises a front cover shell and a rear cover shell, and the motor is clamped in the motor cover by the front cover shell and the rear cover shell.

Furthermore, be equipped with first air intake on the front shroud shell, be equipped with the second air intake on the rear shroud shell, be equipped with the cold wind mouth in the butt joint of second air intake on the rear end face of casing, be equipped with on the blast casing with the inlet scoop of first air intake butt joint, be equipped with the sealing member between fan subassembly and the motor casing, the sealing member is located the outside of cold wind mouth and inlet scoop respectively.

Furthermore, an air outlet is formed in the side face of the front end of the front cover shell, and the motor cover guides airflow to be discharged from the air outlet.

Furthermore, the air purifier also comprises a clean water tank, the rear side of the casing is provided with an installation cavity, an air exhaust gap communicated with the air outlet is formed between the water tank and the installation cavity, and the air exhaust gap exhausts air flow to the rear of the casing.

The effect of adopting above-mentioned technical scheme includes: one end of the wind scooper is abutted to the blast hood, the other end of the wind scooper extends towards the rear end of the fan assembly, the wind scooper is arranged at the downstream of the air exhaust channel, air flow flows upwards in order along the outer surface of the motor shell after coming out from the air exhaust channel, pressure is released slowly, sudden release of pressure after coming out from the air exhaust channel is prevented from causing turbulent flow, air flow noise and vibration are reduced, more surface areas of the motor shell can be caused by air flow, heat dissipation transmitted to the motor shell by the motor is accelerated, and the motor is guaranteed to work with better performance.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic cross-sectional view of the surface cleaning machine of the present invention;

FIG. 2 is an exploded view of the fan assembly associated mounting structure of the present surface cleaning machine;

FIG. 3 is an enlarged view of a portion A of FIG. 1;

FIG. 4 is a schematic cross-sectional view of the fan assembly and wind scooper combination;

fig. 5 is a partially enlarged view of a portion B in fig. 4.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as upper, lower, left, right, front, and rear … …) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In the present application, unless expressly stated or limited otherwise, the terms "connected" and "secured" are to be construed broadly, and thus, for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Furthermore, descriptions in the present application as to "first," "second," etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory to each other or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The cleaning machine of the present invention may be a dry type dust suction device, or a wet type floor cleaning/mopping device. In particular, the cleaning machine may be a hand-held cleaning machine with a wand and manually operated by a user, such as a hand-held floor washing machine, a hand-held floor scrubbing machine, or the like; it is also possible to have a cleaning robot with driving wheels, which can control the driving wheels to travel according to a program stored in the cleaning robot itself and control the cleaning roller to clean the floor.

Referring to fig. 1 to 5, a surface cleaning machine is shown, which includes a machine body 100 and a floor brush 200, wherein the machine body 100 is hinged to the floor brush 200, the machine body 100 includes a machine shell 110, a fan assembly 120, a sewage tank 130 and a clean water tank 140, the fan assembly 120 is installed in the machine shell 110, the fan assembly 120 on the machine body 100 is formed by a high-speed motor, the sewage tank 130 is connected to the machine body 110 through a buckle, the floor brush 200 is provided with a scraping strip (not shown), a cleaning roller 210 for cleaning the ground and a water supply opening (not shown) communicated with the clean water tank 140 through a pipeline, the sewage suction opening 220 is located at the rear side of the cleaning roller 210, the scraping strip is arranged at the rear upper part of the cleaning roller 210 and is in interference fit with the cleaning roller, the lower end of the sewage tank 130 is communicated with the sewage suction opening 220 through a suction hose, and the fan assembly 120, the sewage tank 130, the suction hose and the sewage suction opening 220 are sequentially communicated. The cleaning roller 210 is in wiping contact with the ground to remove dirt on the ground and carry dirty liquid when rotating, the scraping bar scrapes off the dirty liquid on the cleaning roller 210, and the dirt suction port 220 is used for sucking away the scraped dirt and collecting the dirt in the sewage tank 130.

Further, the fan assembly 120 includes a motor 121, a motor casing 122, a movable impeller 123, and a blowing cover 124, the motor casing 122 covers the motor 121, the blowing cover 124 has an air suction cavity and an air suction opening, the air suction opening is disposed on the front end surface of the blowing cover 124, the movable impeller 123 is disposed in the air suction cavity, the output end of the motor 121 extends into the air suction cavity and is fixedly connected with the movable impeller 123 to drive the movable impeller 123 to rotate so as to generate negative pressure, an air exhaust channel 125 is further formed between the outer wall of the motor casing 122 and the blowing cover 124, and the air exhaust channel 125 is communicated with the air suction cavity 124a to guide air to the rear end of the fan assembly 120. The fan assembly 120 further includes a wind scooper 126, one end of the wind scooper 126 abuts against the blower cover 124, and the other end extends toward the rear end of the fan assembly 120, so as to guide the airflow coming out from the air exhaust channel 125 to flow along the outer side wall of the motor casing 122. Preferably, the fan assembly extends to a position that is substantially flush with a rear face of the fan assembly 120.

In this embodiment, the one end of wind scooper with the blast hood butt, the other end upwards extends, set up the guide cover in the low reaches of the passageway of airing exhaust, make the air current follow the passageway of airing exhaust after coming out upwards flow in order along the surface of motor casing, pressure slowly releases, prevent that the air current from coming out the sudden release of back pressure and causing the turbulent flow from the passageway of airing exhaust, reduce the turbulent flow and produce air current noise and vibration, and can also make the air current flow through more surface areas of motor casing, accelerate the heat that gives the motor casing by the motor and scatter and disappear, guarantee that the motor works with better performance. The wind scooper extends upwards to the rear end face of the fan assembly and is approximately parallel and level, so that the release path of the airflow is relatively prolonged, the pressure release speed of the airflow is further slowed, and the surface heat dissipation of the motor shell is improved.

Preferably, the motor casing includes a front motor casing 122a, a middle motor casing 122b and a rear motor casing 122c, the rear motor casing 122c is provided with a cold air port for penetrating a wire harness and/or dissipating heat, and the front motor casing 122a is provided with an air passing port. The blast hood 124 is provided with an air passage, when the fan assembly works, under the action of the movable impeller 123, external air flow F1 passes through a through hole on the rear motor casing 122b, then flows through components such as a coil and a stator of the motor, then enters the air passage 1241 from an air passage and is guided to the inner side of the air suction opening, and is converged with air flow F2 entering from the air suction opening to form air flow F3 and is discharged from the air exhaust passage 125, so that the heat dissipation of the components such as the coil and the stator of the motor is realized while vacuum negative pressure is formed by suction. Specifically, a flexible silica gel sleeve 170 is further sleeved outside the blast cover 124, an air passing groove is formed in the outer surface of the blast cover 124 and/or the inner wall surface of the rubber sleeve 170a, the blast cover 124 is matched with the silica gel sleeve 170 so that the air passing groove forms the air passing channel 1241, and an airflow flow path is schematically given in a curve mode with an arrow in fig. 1, 3 and 4.

Further, the maximum outer diameter D2 of the motor casing 122 is smaller than the maximum outer diameter D1 of the blower cover 124, i.e., D2< D1, as shown in fig. 4.

In the prior art, the maximum outer diameter of the motor casing is larger than that of the blower cover, so that the airflow is shielded by the outer wall of the motor casing after coming out of the air exhaust channel, the airflow can flow back and form turbulent flow near the air exhaust channel port to generate noise, the air exhaust efficiency is influenced, and the vacuum pumping effect of the whole fan assembly is finally reduced. In this embodiment, set up the maximum external diameter through the motor casing to be less than or equal to the maximum external diameter of blast cover, though probably bring the space in the motor casing narrow and small and influence the direct heat dissipation of motor, nevertheless because the surface of motor casing can be flowed through to the air current to remedy the narrow problem that brings of motor casing inner space. In addition, compared with the prior art, the blower cover can effectively reduce the volume of the motor shell and other parts under the conditions of keeping the size of the blower cover approximately unchanged and the vacuumizing efficiency unchanged, so that the whole volume of the fan assembly is reduced, the weight is lightened, and more possibilities are provided for reducing the whole weight of the cleaning machine and facilitating the use of a user.

As further shown in fig. 4, the projection of the motor housing 122 on the blower housing is smaller than the outer diameter D3 of the exhaust duct 125. Specifically, the maximum outer diameter D2< D3 of the motor housing 122.

Set up to be greater than the motor casing projection on the blast casing through the external diameter with the passageway of airing exhaust, can guarantee that at least partial air current can vertical upflow after coming out from the passageway of airing exhaust, and the velocity of flow of this part air current is faster, and the air current that is close to motor axis one side relatively reduces at the outer wall flow time velocity along, the fast air current of outside velocity of flow forms the effect of air current protective screen, prevent that the air current that the inboard velocity of flow is low from escaping its region of enclosing, the air current that the guide velocity of flow that can also be better is low upwards flows along the motor casing outer wall, further promote the effect of heat dissipation and noise reduction.

Further, the fan assembly 120 is clamped in the motor cover 160, the other end of the air guide cover 126 abuts against the inner wall of the motor cover 160, and an air exhaust groove or/and an air exhaust hole are/is formed in the side wall of the air guide cover 126, so that air flows out of the air exhaust groove or/and the air exhaust hole. Preferably, in this embodiment, a plurality of exhaust grooves are formed on a rear end side wall of the wind scooper 126.

In this embodiment, as described above, the maximum outer diameter D2 of the motor casing 122 is smaller than the maximum outer diameter D1 of the blower cover 124, when the blower assembly is clamped by the motor cover, the assumed area of the rear end of the blower assembly is smaller, which may cause unstable stress after the blower assembly is installed.

In an alternative manner of this embodiment, the blower cover 124 includes a front cover 124a and a rear cover 124b, the front cover 124a forms an outer wall of the suction chamber, the rear cover 124b forms an outer wall of the exhaust duct 125, and the wind scooper 126 abuts against the front cover 124 a.

In a preferred embodiment of the present embodiment, as shown in fig. 4 and 5, the air guide cover 126 abuts against the rear cover 124 b.

It is understood that at least one of the front motor casing 122a, the front motor casing 122a and the middle motor casing 122b, and the middle motor casing 122b and the rear motor casing 122c may be integrally formed with the rear cover 124 b.

Further, the motor cover 160 includes a front cover shell 162 and a rear cover shell 161, the front end and the rear end of the fan assembly 120 are respectively abutted to the motor cover 160, and the front cover shell 162 and the rear cover shell 161 are fixed by screws and the fan assembly 120 is clamped in the motor cover 160. The outer side wall of the front housing 162 is provided with a fixing buckle 1622 and a screw fixing hole 1623, and the inner side wall of the casing is provided with a limiting buckle (not shown) and a screw fixing column (not shown) corresponding to the fixing buckle 1622 and the screw fixing hole 1623 respectively so as to fix the fan assembly in the casing.

Further, be equipped with first air intake (not shown in the figure) on the front shroud 162, be equipped with second air intake 1611 on the back shroud 161, second air intake 1611 with the cold wind mouth butt joint on the rear end face of casing, be equipped with the inlet scoop butt joint of 124 on first air intake 1621 and the blast air cover, be equipped with sealing member 170 between fan subassembly and the motor cover, the sealing member includes rubber pad 170b and aforementioned rubber sleeve 170a, the sealing member is located the outside of cold wind mouth and inlet scoop respectively.

Because the fan subassembly can have the moisture inevitably in the suction process, it is sealed through setting up the rubber pad on the motor casing rear end face, can avoid getting into the motor and leading to electrical safety again from the cold wind mouth on the rear end face from exhaust channel exhaust moisture. Similarly, moisture can be prevented from re-entering by providing a rubber boot seal between the blower housing and the front casing. Moreover, the rubber pad and the rubber sleeve have the functions of sealing, vibration reduction and the like, the structure is more compact, the cost is lower, and the noise of the fan assembly is lower during working.

Further, the air outlet 1621 is disposed on a side surface of the front end of the front housing 162, and the motor housing 160 guides the airflow to be discharged from the air outlet 1621.

Therefore, the exhaust path of the airflow can be further prolonged, and the vibration air noise in the exhaust process can be reduced.

Further, as shown in fig. 1, an installation cavity 111 is disposed at the rear side of the machine shell 110, an air exhaust gap communicated with the air outlet is formed between the clean water tank 140 and the installation cavity 111, and the air exhaust gap exhausts air flow to the rear of the machine shell. Specifically, the discharge direction of the air flow is approximately perpendicular to the casing.

When the user uses, surface cleaning machine's casing uses backward inclining, sets up the air-out direction through the clearance of will airing exhaust to be towards the casing rear for in the user use, the wind energy of following the clearance exhaust of airing exhaust can be weathered ground.

Claims (10)

1. The utility model provides a surface cleaning machine that noise reduction effect is good, includes the fan subassembly in casing and the casing, the fan subassembly includes the motor, covers motor casing, the blast hood outside the motor, the blast hood has the chamber of induced drafting in order to inhale the air current from the fan subassembly front end, form the passageway of airing exhaust between the outer wall of motor casing and the blast hood, the passageway of airing exhaust with induced drafting the chamber intercommunication in order to the rear end air guide of fan subassembly, a serial communication port, the fan subassembly still includes the wind scooper, the one end of wind scooper with the blast hood butt, the other end extends to the rear end direction of fan subassembly to the air current that the guide came out from exhaust passage flows along the lateral wall of motor casing.

2. The surface cleaning apparatus of claim 1, wherein the motor casing has a maximum outer diameter less than a maximum outer diameter of the blower housing.

3. The surface cleaning machine with good noise reduction effect as claimed in claim 2, wherein the projection of the motor casing on the blower hood is smaller than the outer diameter of the exhaust passage.

4. The surface cleaning machine with good noise reduction effect as claimed in any one of claims 1 to 3, further comprising a motor cover, wherein the fan assembly is clamped in the motor cover, the other end of the wind guide cover abuts against the motor cover, and a wind exhaust groove and/or a wind exhaust hole are/is arranged on the side wall of the wind guide cover.

5. The surface cleaning machine with good noise reduction effect as claimed in claim 4, wherein the blower cover comprises a front cover and a rear cover, the front cover forms the outer wall of the air suction cavity, the rear cover forms the outer wall of the exhaust passage, and the air guide cover is abutted against the front cover.

6. The surface cleaning machine with good noise reduction effect as claimed in claim 4, wherein the blower cover comprises a front cover and a rear cover, the front cover forms the outer wall of the air suction cavity, the rear cover forms the outer wall of the exhaust passage, and the air guide cover is abutted to the rear cover.

7. The surface cleaning machine with good noise reduction effect as claimed in claim 4, wherein the motor cover comprises a front cover shell and a rear cover shell, and the motor is clamped in the motor cover by the front cover shell and the rear cover shell.

8. The surface cleaning machine with good noise reduction effect as claimed in claim 7, wherein a first air inlet is provided on the front housing, a second air inlet is provided on the rear housing, a cold air inlet is provided on the rear end face of the casing and is in butt joint with the second air inlet, an air suction inlet is provided on the blower housing and is in butt joint with the first air inlet, a sealing member is provided between the blower assembly and the motor housing, and the sealing member is respectively located outside the cold air inlet and the air suction inlet.

9. The surface cleaning machine with good noise reduction effect as claimed in claim 8, wherein an air outlet is arranged on the side face of the front end of the front cover shell, and the motor cover guides air flow to be discharged from the air outlet.

10. The surface cleaning machine with good noise reduction effect as claimed in claim 9, further comprising a clean water tank, wherein a mounting cavity is provided at the rear side of the housing, an air exhaust gap communicated with the air outlet is formed between the water tank and the mounting cavity, and the air exhaust gap exhausts air flow to the rear of the housing.

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