JP2008132155A - Vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hygienic vacuum cleaner capable of enhancing duct-collecting performance. <P>SOLUTION: An ozone generator 26 is provided in an air flow path 57 of the vacuum cleaner 1. By discharge of the ozone generator 26, ozone and ions can be generated as a specific purifying substance in the air flow path 57. By the ions, dust not removed by a dust collecting container 14 can be aggregated and stuck to the air flow path 57 and a dust removing filter 35. Thus dust is securely caught in the vacuum cleaner 1 to improve dust collecting performance. Air in the air provided 57 and exhausted air can be disinfected and deodorized by ozone, thereby obtaining the hygienic vacuum cleaner 1. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a vacuum cleaner.

In general vacuum cleaners, an electric blower and a dust collecting container are provided. By operating the electric blower, dust is sucked in together with air, and the dust is collected in the dust collecting container while the dust is removed. Air is exhausted outside the apparatus (see, for example, Patent Document 1).
In the electric vacuum cleaner of Patent Document 1, a filter is provided on the downstream side of the dust collection chamber (corresponding to a dust collection container) as viewed in the flow direction of the exhausted air, and the air passing through the dust collection chamber Fine dust that could not be removed is captured by this filter.
JP 2004-113469 A

However, since there is finer dust than fine dust, there is a limit in capturing all dust with a filter alone. This also affects the dust collection performance of the vacuum cleaner.
The dust that could not be captured by the filter is discharged with the air to the outside of the machine, which is not hygienic. In particular, when the dust is odorous, this odor may cause discomfort to the user as an exhaust odor.

Further, this odor is also filled inside the vacuum cleaner including the dust collection chamber, and there is a risk that germs may be generated by dust inside the vacuum cleaner.
The present invention has been made based on such a background, and a main object thereof is to provide an electric vacuum cleaner capable of improving dust collection performance.
Another object of the present invention is to provide a sanitary vacuum cleaner.

  The invention according to claim 1 is provided in the housing having an intake port and an exhaust port, an air flow path provided in the housing and connecting the intake port and the exhaust port, and provided in the air flow path, A dust collection container for storing dust and a dust collection container provided in the housing, for sucking dust together with air from the intake port, storing the sucked dust in the dust collection container, and exhausting the sucked air from the exhaust port In the air flow path, the electric blower is provided on the downstream side of the dust collecting container when viewed in the flow direction of the exhausted air, and prevents passage of dust mixed in the air exhausted by the electric blower An electric vacuum cleaner comprising: a dust removal filter for performing a discharge; and a discharge device provided in the air flow path for generating a specific purification substance in the air flow path by discharge. is there.

The invention according to claim 2 is the electric vacuum cleaner according to claim 1, wherein the specific purification substance is an ion.
A third aspect of the present invention is the electric vacuum cleaner according to the first or second aspect, wherein the specific purification substance is ozone.
Invention of Claim 4 is a vacuum cleaner in any one of Claims 1-3 characterized by including the control apparatus which changes the discharge amount of the said discharge device.

According to a fifth aspect of the present invention, in the air flow path, the dust mixed in the air exhausted by the electric blower provided downstream of the dust collecting container as viewed in the flow direction of the exhausted air. The vacuum cleaner according to any one of claims 1 to 4, further comprising an electrostatic filter for capturing the water by static electricity.
A sixth aspect of the present invention is the electric vacuum cleaner according to the fifth aspect, wherein the electrostatic filter is disposed downstream of the discharge device when viewed in the flow direction of the exhausted air. is there.

The invention according to claim 7 is characterized in that the dust removing filter is disposed downstream of the electrostatic filter when viewed in the flow direction of the exhausted air. It is a vacuum cleaner.
The invention according to claim 8 is characterized in that the dust removal filter is arranged upstream of the electrostatic filter when viewed in the flow direction of the exhausted air. It is a vacuum cleaner.

  The invention according to claim 9 is the electric vacuum cleaner according to any one of claims 5 to 8, wherein the electrostatic filter is integral with the dust removal filter.

  According to the first aspect of the present invention, the specific purification substance can be generated in the air flow path by the discharge of the discharge device. This specific purifying substance assists in capturing dust in the dust removal filter, so that dust that could not be removed by the dust collecting container can be reliably captured, and dust collection performance can be improved. it can. Moreover, since the inside of an air flow path can be purified with a purification substance, a sanitary vacuum cleaner can be provided.

According to the second aspect of the present invention, since the specific purification substance is ions, the dust that could not be removed by the dust collecting container can be aggregated and adhered to the air flow path or the dust removal filter. Therefore, dust can be reliably captured in the vacuum cleaner, and dust collection performance can be improved.
According to the invention described in claim 3, since the specific purification substance is ozone, the inside of the air flow path and the exhausted air can be sterilized and deodorized. Therefore, a sanitary vacuum cleaner is provided. can do.

According to the invention described in claim 4, since the discharge amount of the discharge device can be changed by the control device, the generation amount of the purification substance can be changed as necessary.
According to the fifth aspect of the present invention, dust that could not be removed by the dust collecting container can be easily captured by agglomeration by static electricity of the electrostatic filter, so that the dust collecting performance can be further improved. Can do.

According to the sixth aspect of the present invention, since the electrostatic filter is disposed downstream of the discharge device when viewed in the flow direction of the exhausted air, the specific purification substance generated by the discharge device is transferred to the electrostatic filter. It is easy to reach and a specific purification substance assists in capturing dust in the electrostatic filter. Therefore, the dust collection performance can be further improved.
According to the seventh aspect of the present invention, since the dust is first aggregated by the electrostatic filter, the dust removal filter can easily capture the dust, and the dust collection performance can be improved.

According to the eighth aspect of the present invention, the life of the electrostatic filter can be extended by capturing the fine dust with the electrostatic filter after capturing the extra dust with the dust removal filter. Further, since the electrostatic filter is close to the exhaust port of the housing, maintenance of the electrostatic filter from the exhaust port side is facilitated.
According to the ninth aspect of the present invention, the number of components can be reduced by configuring the electrostatic filter integrally with the dust removal filter.

FIG. 1 is a right side view of a vacuum cleaner 1 according to an embodiment of the present invention. FIG. 2 is a right side cross-sectional view of the electric vacuum cleaner 1 shown in FIG. FIG. 3 is a rear sectional view of the vacuum cleaner 1 shown in FIG. FIG. 4 is a side sectional view of the dust removal filter 35. In addition, when mentioning a direction, the direction arrow shown in each figure is referred.
As shown in FIG. 1, the vacuum cleaner 1 includes a vacuum cleaner body 2, a hose 3 having one end connected to the vacuum cleaner body 2, and a pipe having one end connected to the other end of the hose 3 (see FIG. 1). And a suction tool (not shown).

The vacuum cleaner main body 2 is formed in a substantially trapezoidal shape when viewed from the side, and as shown in FIG. 6, the ozone generation unit 7, the filter unit 8, and the cord accommodating part 10 (refer FIG. 3).
(1) Case The case 4 is formed in a hollow, substantially box shape, and has an upper and lower divided structure that is divided into an upper case 4a and a lower case 4b. Between the upper housing 4a and the lower housing 4b (joint portion), an ozone-resistant packing 30 is inserted (see FIG. 3), and the airtightness at the joint portion is maintained.

  The upper housing 4a is formed in a substantially trapezoidal shape in a side view, that is, in a substantially rectangular parallelepiped shape in which the front side surface is inclined. On the left and right side surfaces and the back surface of the upper housing 4a, there are continuously formed substantially U-shaped exhaust ports 11 in plan view that allow the inside of the upper housing 4a to communicate with the outside (see FIG. 1). The bottom surface of the upper housing 4a is located at a position deeper above the lower edge of the upper housing 4a, and the bottom surface has a substantially rectangular communication in plan view that allows the inside of the upper housing 4a to communicate with the outside. A hole 31 (see also FIG. 3) is formed. Note that the front side surface (the inclined portion described above) of the upper housing 4a may function as the cover 4c. Specifically, the cover 4c is swingably supported with respect to the upper housing 4a by a hinge or the like. When the cover 4c is swung and in the closed position, the housing including the upper housing 4a is included. While the inside of the body 4 is sealed, when the cover 4c is swung to the open position, the inside of the housing 4 is exposed to the outside, and maintenance of components inside the housing 4 (for example, the dust collection unit 5) is performed. It becomes possible.

Unlike the upper housing 4a, the lower housing 4b is formed in a substantially rectangular parallelepiped shape that is substantially rectangular in a side view. On the front side surface of the lower housing 4b, an air inlet 12 having a substantially circular shape in front view that connects the inside of the lower housing 4b to the outside is formed. One end of the hose 3 described above is connected to the air inlet 12.
Further, casters 13 are respectively disposed on the left and right side surfaces and the bottom surface of the lower housing 4b, and the movement of the electric vacuum cleaner main body 2 is facilitated by these casters 13.
(2) Dust Collection Unit The dust collection unit 5 is disposed on the front side inside the lower housing 4b. The dust collection unit 5 includes a dust collection container 14 and a dust collection filter 15 that form an outer shell.

  The dust collection container 14 is formed in a hollow, substantially rectangular parallelepiped shape with resin or the like, and its inside communicates directly with the hose 3 connected to the air inlet 12. The dust collection filter 15 is formed in a thin plate shape extending in the vertical direction, and is disposed inside the dust collection container 14. The inside of the dust collecting container 14 is partitioned by a dust collecting filter 15 into a front swirl chamber 16 and a rear communication chamber 17.

  The swirl chamber 16 is formed with a swirl passage that swirls around a central axis extending in the front-rear direction, and the air that flows into the swirl chamber 16 from the intake port 12 is swirled in this swirl passage. At this time, since the centrifugal force is applied to the foreign matter contained in the air, for example, dust, the dust is effectively separated from the air, captured by the dust collecting filter 15 and stored in the swirl chamber 16. The air that has passed through the dust collection filter 15 and from which dust collection has been removed flows into the communication chamber 17.

As described above, the dust collection unit 5 is a type that collects dust by a so-called cyclone method. However, the dust collection unit 5 is not limited to this type. For example, the dust collection unit 5 has a configuration in which a disposable paper pack having no swirl flow path is used as a dust collection container. Also good.
(3) Blower Unit The blower unit 6 is disposed adjacent to the rear side of the dust collecting container 14 inside the lower housing 4b. The blower unit 6 includes a blower case 18 that forms an outer shell thereof, and an electric blower 19 and a fan 22 that are accommodated in the blower case 18.

  The blower case 18 is formed in a hollow cylindrical shape whose central axis extends in the front-rear direction, and can be divided into upper and lower parts. And in the air blower case 18, the suction inlet 20 is formed in the front side, and the discharge outlet 21 is formed in the rear side lower surface. In addition, a recess 23 that is recessed forward is formed on the back surface of the blower case 18. Furthermore, a shielding wall 41 is provided on the back surface of the blower case 18 so as to cover the lower part of the recess 23, for example, the lower half part.

The suction port 20 communicates with the communication chamber 17 of the dust collecting container 14. The communication state between the suction port 20 and the communication chamber 17 is isolated from the outside. Therefore, the air in the communication chamber 17 flows from the suction port 20 into the blower case 18 without leakage.
The electric blower 19 is a motor having a rotating shaft extending in the front-rear direction, and the fan 22 is attached to the rotating shaft of the electric blower 19. Here, when the electric blower 6 is driven, the fan 22 is rotated. Thereby, air on the front side of the fan 22, that is, air on the suction port 20 side is sucked by the fan 22, and this air is discharged to the rear side of the fan 22. The discharged air flows downward from the discharge port 21 and flows out of the blower case 18. The discharge port 21 may be opened only when the electric blower 19 is driven in order to prevent foreign matter from flowing into the blower case 18 via the discharge port 21.
(4) Ozone Generation Unit The ozone generation unit 7 is disposed on the rear side inside the lower housing 4b, and includes an inner case 25, an ozone generator 26 (discharge device) accommodated in the inner case 25, and ozone. And a control device 43 that controls the operation of the generator 26.

  The inner case 25 is formed in a substantially box shape larger than the blower case 18 and houses the blower unit 6 together with the ozone generator 26. In addition, a tray-shaped dust collection unit placement portion 27 is formed on the front side of the inner case 25, and the dust collection unit 5 is placed in the dust collection unit placement portion 27. Further, the inner case 25 has an upper and lower divided structure that is divided into an upper portion 28 and a lower portion 29 including a dust collection unit arrangement portion 27 (see FIG. 3). Between the upper portion 28 and the lower portion 29 (joint portion), an ozone-resistant packing 34 (see FIG. 3) is interposed, and the airtightness at this joint portion is maintained. Further, the top surface of the inner case 25 also serves as the top surface of the lower housing 4b, and an inner case communication hole 55 that allows the inside of the inner case 25 to communicate with the outside is formed. The inner case communication hole 55 and the communication hole 31 of the upper housing 4a communicate with each other so as to face each other in the vertical direction. Further, in the inner case 25, a portion of the blower case 18 facing the discharge port 21 is provided with a sound deadening member 42 such as sponge or felt. Since the impact applied to the case 25 is alleviated, the sound deadening performance of the vacuum cleaner 1 can be improved.

  The ozone generator 26 is a device that generates ozone by so-called silent discharge, and includes a discharge element circuit (not shown) and an electrode 24. The ozone generator 26 is accommodated in the recessed portion 23 of the blower case 18 accommodated in the inner case 25. In this state, for example, the lower half portion of the back surface of the ozone generator 26 is covered with the shielding wall 41 on the back surface of the blower case 18. In addition, the electrode 24 is provided with a discharge surface 33 that actually performs discharge. When the ozone generator 26 is accommodated in the recess 23, the discharge surface 33 is located at the deepest portion (front side) of the recess 23. Facing.

The control device 43 is constituted by a microcomputer or the like, for example, and is electrically connected to the ozone generator 26.
When an operation command is issued from the control device 43 to the ozone generator 26, the electrode 24 discharges the surrounding air at the discharge surface 33 (for example, creeping discharge, silent discharge, etc.), thereby generating ozone. Is done. Specifically, electrons are collided with surrounding oxygen molecules by discharge to dissociate oxygen molecules into oxygen atoms, and ozone is generated by combining the dissociated oxygen atoms with the oxygen molecules. At this time, negative ions are also generated together with ozone. The control device 43 can individually change the ozone generation amount and the negative ion generation amount by controlling the discharge amount at the electrode 24.
(5) Filter unit The filter unit 8 is accommodated in the upper housing 4a, and includes a filter casing 32, a dust removing filter 35 and an electrostatic filter 40 accommodated in the filter casing 32, and a deodorizing filter 36. I have.

  The filter casing 32 is formed in a hollow, substantially rectangular parallelepiped shape extending upward from the bottom wall of the upper casing 4a so as to surround the communication hole 31 in the upper casing 4a. The inside of the filter casing 32 is vertically divided into a filter housing chamber 37 and an air passage chamber 38. An air passage chamber 38 is located above the filter housing chamber 37, and the filter housing chamber 37 and the air passage chamber 38 communicate with each other. A casing communication hole 39 that allows the inside of the air passage chamber 38 to communicate with the outside of the filter casing 32 is formed at a position corresponding to the air passage chamber 38 in the filter casing 32.

  The dust removal filter 35 has a high dust capturing performance belonging to a class of so-called HEPA filter (High Efficiency Particulate Air Filter) or ULPA filter (Ultra Low Penetration Air Filter). The dust removal filter 35 is formed in a pleated shape (see FIG. 4) and in a substantially rectangular shape in plan view having substantially the same size as the communication hole 31, and its lower surface is directed from the communication hole 31 toward the inner case communication hole 55. It is accommodated in the filter accommodating chamber 37 so as to be exposed. Referring to FIG. 4, the dust removal filter 35 is configured by a PTFE (polytetrafluoroethylene) filter medium 44 and a nonwoven fabric 45 that covers the entire surface of the filter medium 44 when viewed in cross section. Here, for convenience of explanation, in FIG. 4, the nonwoven fabric 45 covering the lower surface of the filter medium 44 is referred to as a lower nonwoven fabric 45a, and the nonwoven fabric 45 covering the upper surface of the filter medium 44 is referred to as an upper nonwoven fabric 45b. PTFE is hygienic and has chemical resistance, but its rigidity as a single substance is weak, and thus its rigidity is reinforced and protected by the nonwoven fabric 45. The air flowing as shown by the broken arrows in the figure passes through the dust removal filter 35 in the order of the lower nonwoven fabric 45a, the filter medium 44, and the upper nonwoven fabric 45b. And the dust which flows with air is captured by the filter medium 44, and the passage is blocked.

Returning to FIG. 2 again, the electrostatic filter 40 is formed in a pleated shape by fibers and is formed to have substantially the same size as the dust removal filter 35. The electrostatic filter 40 is disposed above the dust removal filter 35 in the filter housing chamber 37. Yes. The electrostatic filter 40 is charged in a state in which the inside of the fiber is polarized positively and negatively by applying an electric field to the fiber in advance.
The deodorizing filter 36 is mainly made of activated carbon, and is formed in a substantially U shape in plan view so as to surround the filter casing 32 and close the exhaust port 11. Here, activated carbon has a deodorizing effect for adsorbing odors and an effect for decomposing ozone. In addition, the net | network 60 for protecting the deodorizing filter 36 from an external impact is provided in the outer peripheral surface of the deodorizing filter 36 (refer FIG. 1).
(6) Cord accommodating part The code accommodating part 10 is arrange | positioned at the left side of the inner case 25 inside the lower housing | casing 4b, as shown in FIG. The cord storage unit 10 includes a cord 53 and a reel 54 for winding the cord 53.

The cord 53 has a plug (not shown) attached to one end, and the other end is connected to an electrical component such as the electric blower 19 and the plug (not shown) is inserted into an external outlet (not shown). Thus, electric power can be supplied to the electrical component.
The reel 54 is provided so as to be rotatable around a rotation axis extending in the left-right direction. When the reel 54 is rotated in one direction, the cord 53 can be wound around the reel 54, and when the reel 53 is rotated in the opposite direction, the cord 53 is reeled. 54 can be unwound.

The cord housing part 10 communicates with the inside of the air passage chamber 38 through the casing communication hole 39 as indicated by the broken arrow in the figure, and a part of the air that has passed through the casing communication hole 39 is part of the cord housing part 10. As a result, heat generation of the cord 53 can be suppressed.
(7) Dust suction by a vacuum cleaner In this vacuum cleaner 1, when the electric blower 19 is driven, the fan 22 generates a suction force as described above. Therefore, external air is sucked in the order of a suction tool (not shown) → hose 3 → intake port 12 → dust collecting container 14 → suction port 20 along the broken line arrow shown in FIG. At the time of suction, when a suction port (not shown) of a suction tool (not shown) faces dust on the floor surface, these dust is sucked into the dust collecting container 14 together with air. Most of the dust sucked into the dust collecting container 14 is captured by the dust collecting filter 15 and stored in the swirl chamber 16 of the dust collecting container 14 as described above. The air that has passed through the dust collection filter 15 and has flowed into the communication chamber 17 is sucked from the suction port 20 into the blower case 18 and then discharged to the discharge port 21 side by the fan 22. Into the inner case 25. In the inner case 25, the ozone generated by the ozone generator 26 is filled, and the air flowing into the inner case 25 is deodorized and sterilized by the ozone. Examples of the odor component include formaldehyde, and ozone exhibits the above-described deodorizing effect by decomposing formaldehyde as shown in the following chemical formula.

3CH ₂ O + 2O ₃ → 3CO ₂ + 3H ₂ O
Further, as described above, the ozone generator 26 generates negative ions together with ozone. Here, the minute dust that flows together without being captured by the dust collection filter 15 is attracted to negative ions. Since dust is generally charged positively, it is agglomerated by being attracted by negative ions and adheres to the inner peripheral surface of the inner case 25 and the portion exposed to the inside of the inner case 25 in the dust removal filter 35. To do.

  The air deodorized and sterilized by ozone passes through the inner case communication hole 55 and the communication hole 31 and flows into the filter casing 32 of the filter unit 8. The air that has flowed into the filter casing 32 first passes through the dust removal filter 35 in the filter housing chamber 37, and at this time, the above-described aggregated dust is captured. Then, the air that has passed through the dust removal filter 35 continues to pass through the electrostatic filter 40. Here, even finer dust that was not captured by the dust removal filter 35 is captured by the static electricity of the electrostatic filter 40. As described above, since the dust is positively charged, it is agglomerated by attracting to the negatively charged portion in the electrostatic filter 40, that is, attracted to the negative static electricity of the electrostatic filter 40, Captured by the electrostatic filter 40. In this way, dust that cannot be removed by the dust collection container 14 and the dust removal filter 35 can be easily captured by agglomeration due to the static electricity of the electrostatic filter 40, thereby improving the dust collection performance. Can do.

  The air that has passed through the electrostatic filter 40 is further deodorized by the deodorizing filter 36, and ozone in the air is decomposed by the activated carbon of the deodorizing filter 36 and then exhausted to the outside through the exhaust port 11. Here, the exhaust flow velocity at the exhaust port 11 is, for example, 1 m / second or less, and the exhaust is prevented from winding up surrounding dust. Further, as described above, the residual ozone is decomposed by the activated carbon of the deodorizing filter 36, so there is no risk of leaking out of the machine. Even if it leaks, the concentration is 0.1 ppm, which is the safety standard value. Since it is below, ozone can be managed safely.

As described above, the air flow path 57 (see the broken line in the drawing) through which the air from the hose 3 flows is formed inside the vacuum cleaner main body 2. Specifically, the air flow path 57 connects the intake port 12 and the exhaust port 11, and in the middle thereof, the dust collection container 14, the electric blower 19, the inner case 25, the dust removal filter 35, the electrostatic filter 40, and the deodorant. A filter 36 is arranged.
In the electric vacuum cleaner 1, ozone and ions can be generated as specific purification substances in the air flow channel 57 by the discharge of the ozone generator 26. Due to the ions, the dust that could not be removed by the dust collecting container 14 can be aggregated and adhered to the air flow path 57 and the dust removal filter 35. Therefore, dust can be reliably captured in the vacuum cleaner 1 and the dust collection performance can be improved. Moreover, since the inside of the air flow path 57 and the exhausted air can be sterilized and deodorized by ozone, the sanitary electric vacuum cleaner 1 can be provided. Moreover, since the discharge amount of the ozone generator 26 can be changed by the control device 43, the generation amounts of ozone and ions can be changed as necessary. For example, when emphasizing deodorization and sterilization, more ozone is generated than ions, and if emphasis is on dust removal, switching the control generates more ions than ozone. You may let them.

  In addition, since the electrostatic filter 40 is disposed downstream of the ozone generator 26 in the air flow path 57 as viewed in the flow direction of the exhausted air, ions generated by the ozone generator 26 are discharged from the electrostatic filter 40. And the trapping of dust in the electrostatic filter 40 is assisted by ions. Therefore, the dust collection performance can be further improved.

  In addition, since the dust removal filter 35 is disposed upstream of the electrostatic filter 40 when viewed in the flow direction of the exhausted air, after the dust removal filter 35 captures other dust, the electrostatic filter 40 By capturing fine dust, the life of the electrostatic filter 40 can be extended. Further, since the electrostatic filter 40 is close to the exhaust port 11 of the housing 4, maintenance of the electrostatic filter 40 from the exhaust port 11 side becomes easy.

The present invention is not limited to the embodiment described above, and various modifications can be made within the scope of the claims.
For example, in the above embodiment, the dust removal filter 35 is disposed on the upstream side of the electrostatic filter 40 when viewed in the flow direction of the exhausted air. However, the dust removal filter 35 is disposed on the downstream side of the electrostatic filter 40. May be arranged. Thereby, dust is aggregated by the electrostatic filter 40 first. Therefore, the dust removal filter 35 can easily capture the dust, and the dust collection performance can be improved. Furthermore, if the electrostatic filter 40 is configured integrally with the dust removal filter 35, the number of parts can be reduced.

  In addition, when the nonwoven fabric 45 of the dust removal filter 35 shown in FIG. 4 contains a deodorizing component (for example, activated carbon or zeolite), the dust removal filter 35 exhibits a deodorizing effect in addition to capturing dust. can do. Thereby, since the dust removal filter 35 and the deodorizing filter 36 can be comprised together, size reduction of the filter unit 8 can be achieved. And the rigidity of nonwoven fabric 45 itself can be reinforced by making the nonwoven fabric 45 contain a deodorant component. In addition, the deodorizing component may be contained in the lower nonwoven fabric 45a or the upper nonwoven fabric 45b, or both.

  Then, dust paper (tissue paper) 59 is attached (tensioned) to the upstream side of the dust removal filter 35, specifically, the lower surface of the dust removal filter 35 as viewed in the flow direction of the exhausted air (see FIG. 4), prior to the dust removal filter 35, the dust paper 59 can capture some of the fine dust. Accordingly, the dust removal filter 35 can be prevented from being clogged at an early stage, that is, the life of the dust removal filter 35 can be extended by an inexpensive and simple means such as dust paper 59.

  Furthermore, this electric vacuum cleaner 1 may be used as, for example, an air cleaner by utilizing the air purification (deodorization, sterilization, and dust removal) function by the ozone generator 26 described above.

It is a right view of the vacuum cleaner 1 which concerns on the Example of this invention. FIG. 2 is a right side cross-sectional view of the electric vacuum cleaner 1 shown in FIG. 1. FIG. 2 is a rear sectional view of the electric vacuum cleaner 1 shown in FIG. 1. 4 is a side sectional view of the dust removal filter 35. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vacuum cleaner 4 Housing | casing 11 Exhaust port 12 Inlet port 14 Dust collection container 19 Electric blower 26 Ozone generator 35 Dust removal filter 40 Electrostatic filter 43 Control device 57 Air flow path

Claims (9)

A housing having an air inlet and an air outlet;
An air flow path provided in the housing and connecting the intake port and the exhaust port;
A dust collection container provided in the air flow path for collecting dust;
An electric blower that is provided in the housing, sucks dust together with air from the intake port, stores the sucked dust in the dust collecting container, and exhausts the sucked air from the exhaust port;
Dust removal for preventing the passage of dust mixed in the air exhausted by the electric blower provided downstream of the dust collecting container in the air flow path as viewed in the flow direction of the exhausted air Filters,
A discharge device provided in the air flow path for generating a specific purification substance in the air flow path by discharge;
A vacuum cleaner characterized by including.   The vacuum cleaner according to claim 1, wherein the specific purification substance is an ion.   The vacuum cleaner according to claim 1 or 2, wherein the specific purification substance is ozone.   The electric vacuum cleaner according to claim 1, further comprising a control device that changes a discharge amount of the discharge device.   In the air flow path, as viewed in the flow direction of the air to be exhausted, static electricity is provided on the downstream side of the dust collection container and is used to capture dust mixed with air exhausted by the electric blower by static electricity. The vacuum cleaner according to claim 1, further comprising a filter.   6. The electric vacuum cleaner according to claim 5, wherein the electrostatic filter is disposed on the downstream side of the discharge device when viewed in the flow direction of the exhausted air.   The vacuum cleaner according to claim 5 or 6, wherein the dust removing filter is disposed downstream of the electrostatic filter when viewed in the flow direction of the exhausted air.   The vacuum cleaner according to claim 5 or 6, wherein the dust removing filter is disposed upstream of the electrostatic filter when viewed in the flow direction of the exhausted air.   The vacuum cleaner according to claim 5, wherein the electrostatic filter is integral with the dust removal filter.

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