KR101606890B1 - Fan motor apparatus having diffuser unit for vacuum cleaner - Google Patents

Abstract

The present invention discloses a fan motor apparatus for a vacuum cleaner having a diffuser unit. A fan motor apparatus according to the present invention is a fan motor apparatus including a fan motor unit of a vacuum cleaner in which air flows in and out in the same direction, An air intake region for discharging air into the combustion chamber; And a discharge area for discharging the air discharged from the fan motor unit and then discharging the discharged air in a peripheral region of the intake area of the flow path surface. The present invention having the above-described configuration is configured such that the air introduced into the fan motor device and the air discharged from the fan motor device are made in the same plane. Further, the discharged air is dispersed evenly and is discharged in a direction opposite to the air flowing in the vicinity of the inflow air after the flow velocity is slowed down. Therefore, the present invention simplifies the structure of the exhaust passage for noise reduction and improves the removal efficiency of the foreign substances contained in the exhaust air.

Vacuum cleaner, Diffuser unit, Noise reduction, Reduced flow structure, Intake area, Exhaust area

Description

TECHNICAL FIELD [0001] The present invention relates to a fan motor device for a vacuum cleaner having a diffuser unit,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a vacuum cleaner, and more particularly, to a fan motor apparatus for a vacuum cleaner having a diffuser unit for industrial use, household use, business use and the like.

Generally, a vacuum cleaner is equipped with a fan motor device for generating a suction force for forcibly sucking outside air. When the fan motor device is driven, the vacuum cleaner forcibly sucks foreign matter such as dust on the cleaning surface together with the outside air, separates foreign matter from the air, and then discharges the separated air to the outside, thereby cleansing the cleaned surface .

During operation of the vacuum cleaner, noise is generated due to the driving of the fan motor device and the air flow discharged from the fan motor device, which is a main cause of the noise generated in the vacuum cleaner.

The air exhausted from the fan motor device may include fine foreign substances not separated during the foreign material separation process of the vacuum cleaner and carbon dust separated from the carbon brush inside the motor. The fine dust and the carbon dust are removed by the exhaust filter It is discharged to the outside of the vacuum cleaner together with the discharged air.

Accordingly, in the prior art, various techniques are disclosed to reduce noise by allowing the exhaust air of the vacuum cleaner to be diffused after being evenly diffused, and to improve the efficiency of removing fine foreign substances in the exhaust filter unit.

Examples of such prior arts include a configuration in which a plurality of vanes of the U.S. Patent No. 7,258,714 and U.S. Patent Publication No. 2005/0039426 are installed in the flow direction (prior art 1), a motor housing of US Patent Application Publication No. US 2007/0067948 (Prior Art 2) and Korean Patent Laid-Open Publication No. 2006-62145 have a fan motor unit vertically installed so that the inlet port faces downward, and a casing having a plurality of air holes formed at the air outlet side of the fan motor unit The prior art 3) and the like.

In the above-described prior art 1, the exhaust air is dispersed by dispersing air discharged through a motor housing having a plurality of vanes after sucking the separated air into the fan motor unit in the vacuum cleaner, Thereby reducing exhaust noise.

However, in the case of the prior art 1, since the discharged air is sucked through the side surface of the motor housing and then discharged and dispersed, the flow path for air intake and the flow path for exhausting must be separately formed, There is a problem that the number of components for forming the exhaust flow path becomes large and the total volume becomes large.

In the above-described prior arts 2 and 3, the fan motor unit is configured such that the inlet port faces downward, sucks air from the lower portion of the fan motor unit, and then discharges air through a motor housing positioned above the fan motor unit. At this time, the prior art 2 and 3 reduce the noise by dispersing the discharged air by forming a plurality of outlets in the motor housing.

Therefore, in the prior arts 2 and 3, the air sucked into the fan motor unit and the air flow discharged from the fan motor unit are separated, and the complicated flow path structure, the number of parts, and the total size increase .

In addition, in the prior arts 2 and 3, since the fan motor unit has to be provided with a passage for sucking air, the position of the fan motor unit is increased and the center of gravity of the entire vacuum cleaner is increased.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a fan motor apparatus for a vacuum cleaner having a diffuser unit that simplifies a flow path structure for discharging air in a vacuum cleaner.

It is another object of the present invention to provide a fan motor apparatus for a vacuum cleaner having a diffuser unit for reducing exhaust noise of a vacuum cleaner and increasing the efficiency of fine dust separation included in exhaust.

In order to accomplish the above object, the present invention provides a fan motor device for a vacuum cleaner having a diffuser unit, the fan motor device including a fan motor unit of a vacuum cleaner in which air is introduced and discharged in the same direction, An air intake area for discharging the air introduced through the flow path surface to the fan motor unit; And a diffuser unit for diffusing the air discharged from the fan motor unit in a peripheral region of the air inlet area and discharging the air after the air is introduced.

In the above-described configuration, the flow path surface refers to a surface of the diffuser unit in which outside air flows into the intake region and air in the exhaust region is discharged to the outside.

The flow dividing wall separating the intake area and the exhaust area may be formed in the diffuser unit.

The diffuser unit may further include an inlet pipe for introducing air into the inlet region at a center of the flow path surface.

When an inflow pipe is formed in the diffuser unit, an exhaust filter unit may be inserted into the outer surface of the inflow pipe to remove foreign matter from the exhausted air.

When the exhaust filter unit is coupled to the outside of the inflow pipe, the diffuser unit further includes an exhaust filter fixing unit fixing the exhaust filter unit to the flow path surface.

The exhaust filter fixing portion includes an outer circumferential exhaust filter fixing portion into which a lower end portion of an outer case constituting an outer surface of the exhaust filter unit is inserted and a lower end portion of an inner pipe case constituting an inner surface opposed to the outer surface of the inlet pipe of the exhaust filter unit are inserted And an inner circumference exhaust filter fixing portion. At this time, the outer circumferential exhaust filter fixing portion and the inner circumference fixing filter fixing portion may further include a sealing member for sealing.

Preferably, the exhaust area is formed to have a larger volume than the air intake area in order to smoothly discharge the air inside the vacuum cleaner and to widen the dispersion area of the air.

An exhaust part having a plurality of exhaust holes may be formed on the passage surface corresponding to the exhaust area so that the exhausted air can be evenly dispersed.

The exhaust part is also preferably formed so as to surround the intake area such that the air is evenly dispersed and the dispersed area is as wide as possible.

Wherein the diffuser unit has an inlet pipe formed on the flow path surface, an exhaust part formed on a surface of the flow path surface located on the outside of the inlet pipe, and an upper cover flow path separating wall protruding toward the lower diffuser cover, ; And a lower diffuser cover having a diffuser unit exhaust port, a diffuser unit inlet, and a lower cover flow path separation wall protruding toward the upper diffuser cover.

The upper diffuser cover and the lower diffuser cover are coupled to each other to form a diffuser unit. At this time, the upper cover channel separating wall and the lower cover channel separating wall are in close contact with or joined to each other to form a channel separating wall, whereby the inner region of the diffuser unit is separated into an intake region and an exhaust region.

The air discharged from the exhaust region is discharged in a direction opposite to the air flowing into the intake region, and is preferably discharged in a direction opposite to the air flowing in the peripheral region of the air flowing into the intake region.

Accordingly, the present invention simplifies the structure of the exhaust passage of the fan motor device of the vacuum cleaner for improving noise reduction and foreign matter removal efficiency of the exhaust filter unit.

Further, the diffuser unit of the present invention disperses the exhausted air evenly over a wide area and discharges the exhausted air, so that the flow velocity of the exhaust air is reduced, and the contact area and contact time of the exhausted air with the exhaust filter are increased.

As described above, according to the present invention, the diffuser unit allows the air flowing into the fan motor unit and the air discharged from the fan motor unit to flow from the same direction to an outer region at the center and the center, Reduce the number of parts and reduce the size of the cleaner air exhaust flow path structure.

Further, the number of parts and the size of the vacuum cleaner itself are reduced, the size of the vacuum cleaner itself is reduced, the vacuum cleaner is easily manufactured, and the manufacturing cost is reduced.

It also reduces the exhaust noise by evenly distributing the discharged air and reducing the flow rate, thereby improving the usability of the user.

In addition, by uniformly distributing the discharged air and reducing the flow rate, the contact area with the exhaust filter and the contact time are increased to improve the removal efficiency of fine particles and carbon dust which are not separated, thereby improving the hygiene safety of the user.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view of a fan motor apparatus 1 according to an embodiment of the present invention and FIG. 2 is a perspective view of a fan 1 of FIG. 1, including a prefilter unit 10 and a blowing duct 20 of a vacuum cleaner. 3 is an exploded perspective view of the bottom of the diffuser unit 100. Fig. 4 is a sectional view of the diffuser unit 100 in a state where the fan motor unit 1 of Fig. 1 is mounted, Sectional view of a part of the vacuum cleaner 2 for showing the structure thereof.

As shown in the accompanying drawings, a fan motor device 1 according to an embodiment of the present invention includes a diffuser unit 100 and a fan motor unit 130.

The fan motor unit 130 is installed in the vacuum cleaner 2 (see FIG. 4) to form an air flow path for intake and exhaust. The fan motor unit 130 includes a motor 150 4 shows only a motor case) and a fan motor case 130a.

The fan motor case 130a incorporates a motor 150 to which the impeller unit 140 is coupled to receive air from the intake area 121a of the diffuser unit 100 and discharge the air to the exhaust area 122a.

The fan motor case 130a has a fan motor inlet pipe 131a communicating with the diffuser exhaust port 121 and a fan motor exhaust pipe 132a communicating with the diffuser inlet 122 on the upper surface. The opening of the fan motor inlet pipe 131a is connected to the diffuser outlet port 121 of the fan motor inlet 131 and the opening of the fan motor outlet pipe 132a is coupled with the diffuser inlet 122, (132).

The diffuser unit 100 introduces the air separated from the centrifugal separator (not shown) provided in the dust collecting apparatus into the fan motor unit 130 and circulates the air discharged from the fan motor unit 130 around And then discharged to the exhaust filter unit 40. [

The diffuser unit 100 includes an upper diffuser cover 110 and a lower diffuser cover 120 which are coupled to form a separate intake region 121a and an exhaust region 122a.

The upper diffuser cover 110 includes an upper cover outer peripheral wall 110a, an inflow pipe 111, an exhaust part 113, an outer circumferential exhaust filter fixing part 114a, an inner circumferential exhaust filter fixing part 114b, And an upper cover channel separating wall 115. [

The upper cover outer peripheral wall 110a protrudes downward from the outer peripheral bottom surface of the upper diffuser cover 110. [

The inlet pipe 111 has a structure in which upper and lower surfaces are opened and a grill member 112 is provided. Here, the open upper portion of the inflow pipe 111 becomes the inflow pipe inflow opening 111a, and the open lower portion becomes the inflow pipe vent 111b (see Fig. 3). An inlet pipe 111 having such a structure is formed on the upper surface of the upper diffuser cover 100.

The exhaust part 113 includes a plurality of exhaust holes 113a formed on the upper surface of the upper diffuser cover 110 corresponding to the exhaust area 122a.

The outer circumferential exhaust filter fixing portion 114a and the inner circumference exhaust filter fixing portion 114b are formed in an annular shape concentric with the inlet pipe 111. An exhaust portion 113 is included in a region between the outer peripheral exhaust filter fixing portion 114a and the inner peripheral exhaust filter fixing portion 114b.

At this time, the outer circumferential exhaust filter fixing portion 114a includes a first protruding portion 114'a and a second protruding portion 114 '', which are annularly protruding in a concentric manner on the outer peripheral side of the upper surface of the upper surface of the upper diffuser cover 110 The inner circumferential exhaust filter fixing portion 114b is constituted by a third protrusion 114'b and a fourth protrusion 114 '' that are concentrically formed on the outer peripheral edge of the inflow pipe 111 and are annularly protruded do. A seal member for sealing is formed in a region between the first projecting portion 114'a and the second projecting portion 114'a and between the third projecting portion 114'b and the fourth projecting portion 114'b (Not shown).

The outer circumferential exhaust filter fixing portion 114a and the inner circumference exhaust filter fixing portion 114b constitute one embodiment of the exhaust filter fixing portion of the present invention.

The upper cover channel separating wall 115 protrudes from the bottom surface of the upper diffuser cover 110 and is engaged with the lower cover channel separating wall 125 to divide an inside region of the diffuser unit 100 into an intake region 121a and an exhaust region Area 122a. At this time, the inflow pipe exhaust port 111b communicates with the intake area 121a.

The upper diffuser cover 110 of the above-described structure is a flow path surface of the present invention in which air is introduced and discharged.

The lower diffuser cover 120 includes a lower cover outer circumferential wall 120a and a lower cover channel separating wall 125.

The lower cover outer wall 120a is protruded upward from the upper surface of the outer periphery of the lower diffuser cover 120 to divide the upper region of the lower diffuser cover 120 into an intake region 121a and an exhaust region 122a do.

The lower cover channel separating wall 125 is formed with an upper cover flow channel separating wall 115 formed in the upper diffuser cover 110 in the inner region of the lower cover outer peripheral wall 120a and an intake region 121a and an exhaust region 122a The outer surface of the diffuser unit 100 is formed. At this time, it is preferable that the exhaust area 122a is formed as large as possible so that the diffusion surface of the exhausted air is maximized.

A diffuser unit exhaust port 121 is formed on a surface of the lower diffuser cover 120 where the intake area 121a is located. A diffuser unit inlet 122 is formed in the surface on which the exhaust area 122a is located. Here, the diffuser unit exhaust port 121 and the diffuser unit inlet port 122 refer to openings through which air is introduced and discharged based on the diffuser unit 100.

The upper diffuser cover 110 and the lower diffuser cover 120 are coupled to each other to form a diffuser unit 100. At this time, the bottom surface of the upper cover channel separating wall 115 and the upper surface of the lower cover separating wall 125 are in close contact with each other to divide the inside region of the diffuser unit 100 into the intake region 121a and the exhaust region 122a. The surface on which the inflow pipe 111 and the exhaust part 113 for introducing the air into the intake area 121a are formed is a surface corresponding to the flow path surface in which the air of the present invention is introduced and discharged.

The combined diffuser unit 100 is combined with the fan motor unit 130 at the top of the fan motor unit 130 and assembled into the fan motor unit 1 of the embodiment of the present invention. At this time, the diffuser unit exhaust port 121 communicates with the fan motor inlet pipe 131a, and the diffuser unit inlet port 122 communicates with the fan motor exhaust pipe 132a. In this case, since the cross sectional area of the fan motor inlet 131 and the fan motor exhaust port 132 is small and the structure is simple, the sealing ability is improved when the diffuser unit 100 is combined with the fan motor inlet 131. Further, even when a separate sealing gasket is applied, the operation is easy and the cost is low.

2, the pre-filter unit 10 fixedly supports a pre-filter 11 for separating foreign matter contained in air introduced into the fan motor unit 130, and the blowing duct 20 is connected to a fan motor unit (100) and the pre-filter unit (10) are fixedly supported in the interior of the filter unit (1).

4, the fan motor device 1 according to the embodiment of the present invention is configured such that the shaft (not shown in the figure) of the motor 150 rotates about the axis of the wheel about the axis AA of the vacuum cleaner 2 (Not shown in the drawing), and is mounted inside the vacuum cleaner 2 such that the diffuser unit 100 is located at the upper side.

The exhaust filter unit 40 is then inserted into the outer periphery of the inflow pipe 111. At this time, the outer case 41 of the exhaust filter unit 40 is inserted into the groove between the first projection 114'a of the outer periphery exhaust filter fixing portion 114a and the second projection 114 "a, The inner tube case 42 of the filter unit 40 is inserted into the groove between the third projection 114'b of the inner peripheral exhaust filter fixing portion 114b and the fourth projection 114'b to form the exhaust filter unit 40 are fixed to the upper surface of the diffuser unit 100.

The blowing duct 20 is coupled to the upper portion of the diffuser unit 100 to which the exhaust filter unit 40 is coupled so that the outer surface of the diffuser unit 100 is inserted from the lower portion of the blowing duct 20 to the inside thereof.

The front filter unit 10 in which the front filter 11 is incorporated after the blowing duct 20 is coupled is inserted in the upper opening of the blowing duct 20 in the filter exhaust port 13 to communicate with the inflow pipe 111 So as to be connected to the upper opening of the blowing duct 20.

When the fan motor unit 1 having the diffuser unit 100 and the exhaust filter unit 40 and the air blowing duct 20 are coupled to the vacuum cleaner 2, Or mountable. When the dust collecting device is mounted on the vacuum cleaner 2, the centrifugal exhaust pipe 31 positioned in the dust container 30 of the dust collecting device communicates with the inner area of the front filter unit 10, So that the separated air is introduced into the front filter unit 10. [

When the assembled vacuum cleaner 2 is driven as described above, the air separated from the centrifugal separator is introduced into the front filter unit 10 through the centrifugal exhaust pipe 31. The foreign matter is filtered by the pre-filter 11 of the air introduced into the pre-filter unit 10. The air filtered by the foreign matter in the preliminary filter 11 flows into the intake region 121a of the diffuser unit 100 through the inflow pipe 111. [ The air introduced into the intake region 121a flows into the fan motor unit 130 through the fan motor inlet pipe 131a communicated with the diffuser exhaust port 121. [ The air introduced into the fan motor unit 130 flows into the exhaust region 122a of the diffuser unit 100 through the fan motor exhaust pipe 132a.

The air introduced into the exhaust region 122a of the diffuser unit 100 is diffused and discharged to the entire region of the exhaust portion 113 through a plurality of exhaust holes 113a formed in the exhaust portion 113. [ Accordingly, the flow rate of the air is constantly maintained throughout the exhaust part 113, and the exhaust noise is reduced by uniformly reducing the speed.

The air diffused and exhausted from the entire exhaust part 113 is filtered by the exhaust filter 43 of the exhaust filter unit 40 coupled to the upper part of the diffuser unit 100 and then introduced into the vacuum cleaner 2 And is discharged to the outside through a formed discharge port (not shown in the drawing). At this time, the air exhausted from the exhaust area 122a diffuses evenly over the entire area of the exhaust part 113, and the flow velocity is slowed down. Therefore, when the air discharged from the diffuser unit 100 passes through the exhaust filter unit 40, the contact time with the contact surface with the exhaust filter 43 increases and the removal efficiency of the fine dust increases.

In the fan motor device 1 of the present invention, air flows in from the center of the flow path surface (the upper surface of the diffuser unit 100) of the diffuser unit 100, and the discharged air flows out through the peripheral area of the flow path surface So as to simplify the structure of the air flow path through the fan motor device 1.

The size of the vacuum cleaner 2 as well as the fan motor unit 1 can be reduced if the structure of air flow through the fan motor unit 1 in the vacuum cleaner 2 is simplified. Accordingly, the manufacturing cost of the fan motor device and the vacuum cleaner can be reduced, and the productivity can be improved.

The size reduction of the vacuum cleaner 2 also directly improves the convenience of the user.

INDUSTRIAL APPLICABILITY The present invention can be applied to cleaning apparatuses for industrial use, business use, household cleaners, and the like.

1 is a perspective view of a fan motor device 1 according to an embodiment of the present invention,

Fig. 2 is an exploded perspective view of the fan motor device 1 of Fig. 1,

3 is an exploded bottom perspective view of the diffuser unit 100,

4 is a bottom partial cross-sectional view of the vacuum cleaner 2 for showing the state in which the fan motor device 1 of Fig. 1 is mounted and the flow path structure at the bottom of the vacuum cleaner 2. Fig.

DESCRIPTION OF THE RELATED ART [0002]

100: diffuser unit

110: upper diffuser cover 110a: upper cover outer wall

111: inlet pipe 111a: inlet pipe inlet

111b: inlet pipe exhaust port 114a: outer circumferential exhaust filter fixing section

114'a: first projection 114 "a: second projection

114'b: third projection 114 "b: fourth projection

114b: inner circumference exhaust filter fixing portion 115: upper cover flow passage separation wall

120: lower diffuser cover 121: diffuser unit exhaust port

121a: Intake zone 122: Diffuser unit inlet

122a: exhaust area 125: lower cover channel separation wall

Claims (13)

A fan motor apparatus comprising a fan motor unit of a vacuum cleaner in which air is introduced and discharged in the same direction, An air intake area for discharging the air introduced through the air flow path to the fan motor unit; And And a diffuser unit for diffusing the air discharged from the fan motor unit in a peripheral area of the air inlet area and discharging the air, Wherein the flow path surface includes an inlet pipe and an exhaust portion formed on a surface of the flow path surface located outside the inlet pipe, Wherein the inlet pipe and the exhaust port are formed on the same side of the diffuser unit, Wherein the diffuser unit comprises: An upper diffuser cover formed with the inlet pipe and the exhaust section and having an upper cover flow passage separating wall protruding toward the lower diffuser cover; And And a lower diffuser cover having a diffuser unit exhaust port, a diffuser unit inlet, and a lower cover flow path separation wall protruding toward the upper diffuser cover. The apparatus of claim 1, wherein the diffuser unit comprises: And a flow path separating wall for separating the intake region and the exhaust region from each other. The apparatus of claim 1, wherein the diffuser unit comprises: Further comprising an inlet pipe for introducing air into the inlet region at a center of the flow path surface. 4. The apparatus of claim 3, wherein the diffuser unit comprises: And an exhaust filter unit inserted into the outside of the inflow pipe. 4. The apparatus of claim 3, wherein the diffuser unit comprises: Further comprising an exhaust filter fixing portion for fixing the exhaust filter unit to the flow path surface. 6. The exhaust gas purifying apparatus according to claim 5, An outer circumferential exhaust filter fixing portion into which a lower end of an outer casing constituting an outer surface of the exhaust filter unit is inserted; And An inner circumference exhaust filter fixing portion into which a lower end portion of an inner casing opposite to an outer surface of the inflow pipe of the exhaust filter unit is inserted; Wherein the vacuum cleaner comprises at least one of a vacuum cleaner and a vacuum cleaner. 7. The fan motor apparatus according to claim 6, wherein the outer circumferential exhaust filter fixing portion and the inner circumferential fixed filter fixing portion further include a sealing member for sealing. The exhaust system according to claim 1, And the exhaust area is formed to have a larger volume than the intake area. The apparatus of claim 1, wherein the diffuser unit comprises: And an exhaust part having a plurality of exhaust holes is formed in the flow path surface corresponding to the exhaust area. The exhaust system according to claim 9, Wherein the fan motor device is configured to surround the intake area. delete 2. The fan motor apparatus of claim 1, wherein the air discharged from the exhaust area is discharged in a direction opposite to the air flowing into the suction area. 13. The fan motor apparatus according to claim 12, wherein the air discharged from the exhaust area is discharged from the peripheral area of the air flowing into the suction area.

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