JP2014045838A - Vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To maintain dust collection performance and prevent occurrence of abnormal noise by hardly allowing a micro dust filter to be turned over due to exhaust pressure and exhaust heat, even when the micro dust filter provided in an exhaust channel of an electric blower is clogged.SOLUTION: A micro dust filter 5 is clamped via a spacer 10 arranged between a sound proof pipe 6 and an outer member of the spacer 10, so that a downstream side of the micro dust filter 5 can be supported with the spacer 10. Consequently, the micro dust filter 5 is hardly turned over due to exhaust pressure and exhaust heat of an electric blower 3 even when the micro dust filter 5 is clogged, so that the dust collection performance can be maintained and the occurrence of abnormal noise can be prevented.

Description

  The present invention relates to a vacuum cleaner provided with a fine dust filter so as to cover an exhaust outlet of a soundproof cylinder containing an electric blower.

  Conventionally, the attachment means of the dust filter of this type of vacuum cleaner has attached the dust filter formed of a substantially sheet-like soft material directly to the exhaust outlet of the soundproofing cylinder or upstream of the exhaust outlet (for example, Patent Document 1).

JP-A-5-95860

  However, in the above-described conventional configuration, particularly when the fine dust filter is formed of a substantially sheet-like soft material, the fine dust filter has a fine mesh and is easily subjected to exhaust pressure from the electric blower. Both the dust filter mounting part itself and the dust filter are easy to soften, the dust filter is turned over, the dust collection performance may deteriorate, and abnormal noise may occur, especially when the dust filter clogs due to prolonged use. Furthermore, it had the subject that the possibility became high.

  The present invention solves the above-described conventional problems, and an object thereof is to provide a vacuum cleaner that reduces turning of a fine dust filter, maintains fine dust collection performance, and prevents abnormal noise.

  In order to solve the above-mentioned conventional problems, the attachment means of the dust filter of the electric vacuum cleaner of the present invention includes a soundproof tube containing the electric blower, a dust filter formed in a substantially sheet shape covering the exhaust outlet of the soundproof tube, A spacer having an air passage on the downstream side of the dust filter, and the dust filter is disposed between the soundproof cylinder and a member outside the spacer so as to press and cover the exhaust outlet of the soundproof cylinder And sandwiched through the spacer.

  As a result, even when the dust filter is formed of a substantially sheet-like soft material, the dust filter is supported on the downstream side by the spacer, so even when the dust filter is clogged, It is difficult to turn over the exhaust pressure and exhaust heat, and maintenance of fine dust collection performance and generation of abnormal noise can be prevented.

  The attaching means of the fine dust filter of the electric vacuum cleaner of the present invention can reduce the turning of the fine dust filter, and can maintain the fine dust collecting performance and prevent the generation of abnormal noise.

External appearance perspective view of the vacuum cleaner main body in Embodiment 1 of this invention Longitudinal sectional view showing the installation state of the dust filter of the vacuum cleaner body The exploded perspective view which shows the exhaust outlet of the soundproof cylinder of the vacuum cleaner main body, and the flow of exhaust An exploded perspective view showing the vicinity of the dust filter of the vacuum cleaner body Exploded perspective view showing the flow of fine dust filter and exhaust of the vacuum cleaner body Disassembled perspective view showing the vicinity of the power cord cooling port of the vacuum cleaner body and the flow of exhaust

  1st invention is equipped with the soundproof cylinder which contains an electric blower, the fine dust filter formed in the substantially sheet | seat shape which covers the exhaust outlet of the said soundproof cylinder, and the spacer which has the air path in the downstream of the said fine dust filter. The dust filter is sandwiched between the soundproof cylinder and the outer member of the spacer so as to press and cover the exhaust outlet of the soundproof cylinder, so that the dust filter has a substantially sheet shape. Even if the dust filter is clogged by supporting the downstream side of the dust filter with a spacer, it is difficult to turn against the exhaust pressure or heat of the electric blower. Maintenance of the collection performance and generation of abnormal noise can be prevented.

  In particular, the second invention uses the flexibility of the spacer by forming the spacer of the first invention with a breathable soft material, and even if the mounting surface is irregular, the fine dust filter can be used. It is possible to press fit the exhaust outlet of the soundproof cylinder to improve adhesion, and it is possible to maintain the dust collection performance and prevent the generation of abnormal noise with a simple configuration.

  In the third invention, in particular, since the vent hole of the spacer of the second invention is made of a soft material that is coarser than the dust filter and has high air permeability, the exhaust pressure loss at the spacer is reduced, and the exhaust is a dust filter. After passing, it becomes possible to reduce the ventilation resistance when passing through the spacer, and the reduction of the suction force can be reduced.

  In the fourth aspect of the invention, in particular, a fine dust filter is provided by disposing an opening hole-shaped or concave-shaped ventilation space in the facing portion of the exhaust outlet of the soundproofing cylinder in the spacer of any one of the first to third inventions. The exhaust passage of the spacer is reduced while being pressed and fitted to the exhaust outlet of the soundproof cylinder at a portion other than the ventilation space of the spacer, and further, the exhaust is easily dispersed in all directions within the ventilation space. Further, it is possible to further reduce the airflow resistance when passing through the spacer, and it is possible to further reduce the decrease in suction force.

  In the fifth invention, in particular, the fine dust filter and the spacer according to any one of the first to fourth inventions are fixed to an air-permeable support member disposed on the downstream side of the spacer. Since the support member has air permeability, an exhaust passage that passes through the sound outlet from the exhaust outlet in the front direction is also secured, and when exhaust passes through the spacer after passing through the dust filter. Ventilation resistance can be further reduced, and a reduction in suction force can be further reduced.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is an external perspective view of the electric vacuum cleaner main body 1 according to the first embodiment of the present invention.
In FIG. 1, a vacuum cleaner main body 1 is connected to a suction port body (not shown) and a hose (not shown) communicating with an extension pipe (not shown), and a suction port 2 communicating with the hose at the front. The dust collector 4 is disposed between the electric blower 3 and the suction port 2 and the electric blower 3 at the rear.

  FIG. 2 is a cross-sectional view of the main part showing the attachment state of the dust filter 5 of the vacuum cleaner main body 1, and FIG. 3 is an exploded view showing the exhaust outlet 7 of the soundproof cylinder 6 and the flow of exhaust in the vacuum cleaner main body 1. 4 is an exploded perspective view showing the vicinity of the fine dust filter 5 of the electric vacuum cleaner main body 1. FIG. 5 is an exploded perspective view showing the flow of the fine dust filter 5 of the electric vacuum cleaner main body 1 and the exhaust gas.

  2 to 5, the electric blower 3 is included in the soundproofing cylinder 6, and the intake side thereof is disposed so as to communicate with the dust collecting part 4, while the exhaust side thereof is connected to the soundproofing cylinder 6. The exhaust passage 8 and the main body exhaust port 9 are disposed so as to communicate with each other through an exhaust outlet 7 disposed below.

  Here, on the downstream side of the exhaust outlet 7 in the exhaust passage 8, a sheet-form fine dust filter 5 formed of a fiber that holds static electricity, and a fully open cell urethane foam having about 8 cells between 25 mm. Attached so as to be along the inner surface of the lower case 11 that forms the lower outline of the vacuum cleaner body 1 in the exhaust passage 8 and the air permeability, flexibility, and block-like spacer 10 higher than the dust filter 5. And a breathable sheet-like soundproofing material 12 formed of felt having a basis weight of about 600 g / m2.

  The fine dust filter 5 and the spacer 10 are stapled to the soundproofing material 12, and the spacer 10 has a thickness sufficient to press the fine dust filter 5 against the exhaust outlet 7 having an uneven surface.

  Further, as shown in FIGS. 2 and 5, an opening-shaped first ventilation space 13 is disposed in the facing portion of the soundproof cylinder 6 of the spacer 10 facing the exhaust outlet 7.

FIG. 6 is an exploded perspective view showing the vicinity of the power cord cooling port 14 of the electric vacuum cleaner main body 1 and the flow of exhaust in the first embodiment of the present invention.
In FIG. 6, a cord reel partition wall 17 that rotatably supports a cord reel 16 that accommodates a power cord 15 is disposed adjacent to the soundproof cylinder 6, and below the cord reel partition wall 17, the electric blower 3. A part of the exhaust gas is detoured to the power cord 15 side, and a power cord cooling port 14 for cooling the power cord 15 is provided.

  Here, a second ventilation space 19 formed by notching the spacer 10 is disposed in a portion where the fine dust filter 5 and the power cord cooling port 14 of the spacer 10 are opposed to each other.

Below, operation | movement of the vacuum cleaner comprised as mentioned above and an effect | action of the attachment means of a fine dust filter are demonstrated.
First, when the electric vacuum cleaner main body 1 is in an operating state, dust on the cleaning surface is sucked into the dust collecting part 4 through the suction port, the extension pipe, and the hose by the suction force of the electric blower 3.

  On the other hand, the exhaust from the electric blower 3 passes through the exhaust outlet 7 of the soundproof cylinder 6, the fine dust filter 5, the spacer 10, a part, and the soundproof material 12, and then partly through the exhaust passage 8 and the main body exhaust port 9. The unit is discharged from the exhaust passage 8 through the power cord cooling port 14 and the power cord housing 20 to the outside of the main body 1 from the power cord outlet 21.

  Here, the fine dust that could not be collected by the dust collecting section 4 is divided into a fine dust filter 5 and partly an exhaust filter (not shown) disposed in the main body exhaust port 9 and a partition filter disposed in the power cord cooling port 14. Most are collected by (not shown).

  Further, the exhaust gas that has passed through the fine dust filter 5 is dispersed in all directions in the first ventilation space 13, and the spacer 10 and a part thereof flow into the exhaust passage 8 through the soundproof material 12.

  Further, although the dust filter 5 and the spacer 10 are adjacent to the power cord cooling port 14, the power cord cooling port 14 is not blocked by providing the second ventilation space 19. The unit smoothly flows into the power cord housing 20 via the power cord cooling port 14 and cools the power cord 15.

  As described above, in the first embodiment, the downstream side of the fine dust filter 5 is supported by the spacer 10, so that even when the fine dust filter 5 is clogged, the exhaust pressure and exhaust heat of the electric blower 3 can be prevented. It is difficult to turn over, and maintenance of fine dust collection and generation of abnormal noise can be prevented.

  In addition, the spacer 10 is formed of a breathable soft material and is press-fitted between the exhaust outlet 7 and the lower case 11 so that the flexibility of the spacer 10 is utilized to attach the exhaust outlet 7 and the lower case 11. Even if the surface has irregular shapes, the dust filter 5 can be pressed and fitted to the exhaust outlet 7 of the soundproofing cylinder 6 to improve adhesion, maintaining the dust collection performance and generating abnormal noise with a simple configuration. Can be prevented.

  In addition, the spacer 10 is made of a soft material having a rougher ventilation hole than the fine dust filter 5 and having high air permeability, thereby reducing the exhaust pressure loss at the spacer 10 and exhaust passing through the spacer 10 after passing through the fine dust filter 5. It is possible to reduce the ventilation resistance at the time of carrying out, and to reduce the reduction of the suction force.

  Further, by providing a first ventilating space 13 in the shape of an opening hole at the opposite portion of the soundproofing cylinder 6 of the spacer 10 to the exhaust outlet 7, the dustproof filter 5 is placed in a portion other than the first ventilating space 13 of the spacer 10. 6, the exhaust passage portion of the spacer 10 is reduced and the exhaust gas is easily dispersed in all directions in the first ventilation space 13. Therefore, after the exhaust gas passes through the fine dust filter 5, the spacer 10 It is possible to further reduce the airflow resistance when passing through the air and further reduce the reduction in suction force.

  In addition, by supporting and fixing the dust filter 5 and the spacer 10 to the breathable soundproofing material 12 located on the downstream side of the spacer 10, the positional deviation between the dust filter 5 and the spacer 10 can be prevented and the direction can be regulated. Since the soundproofing material 12 has air permeability, an exhaust passage that passes through the exhaust outlet 7 of the soundproofing cylinder 6 in the front direction is also secured, and the ventilation resistance when the exhaust passes through the spacer 10 after passing through the fine dust filter 5 is further reduced. This makes it possible to further reduce the reduction in suction force.

  In recent years, a means for fixing a box-shaped fine dust filter integrally formed with a pleated HEPA filter or the like to the exhaust outlet 7 of the soundproofing cylinder 6 in order to perform the same function as the fine dust filter 5 and the spacer 10. Such a box-shaped fine dust filter is costly to be integrally formed, and requires a box-shaped mounting space and mounting structure.

  On the other hand, the fine dust filter 5 and the spacer are sandwiched by sandwiching the fine dust filter 5 having the structure of the present invention via a block-like spacer 10 provided with a first ventilation space 13 having an opening hole in the center. 10 can be formed by a punching die, can be manufactured inexpensively, and the vacuum cleaner body 1 can be reduced in size and weight.

  Further, the material of the sheet-like fine dust filter 5 and the spacer 10 can be expected to have a sound absorbing effect as compared with materials such as the HEPA filter of the box-like fine dust filter. Before and after passing through the ventilation space 13, it is possible to expect a sound attenuation effect in the exhaust due to the compression / expansion action of the air, and further expect a sound absorption effect at the opposite portion of the first ventilation space 13 of the soundproof material 12. Can do.

In the first embodiment, the description has been given of the case where the opening hole-shaped ventilation space, which is a through hole, is disposed in the spacer at the portion of the soundproofing cylinder facing the exhaust outlet. It goes without saying that the same effect can be obtained even when an open concave ventilation space that is not completely penetrated is provided.

  Further, when the dust filter 5 and the spacer 10 are not supported and fixed by the soundproofing material 12 or the like but are directly sandwiched between the soundproofing cylinder 6 and the lower case 11, the dust filter 5 and the spacer 10 are fixed by staple or glueing. In addition, it goes without saying that the position can be regulated by forming a support portion for preventing displacement from the soundproof cylinder 6 and the lower case 11.

  As described above, the vacuum cleaner according to the present invention has a simple configuration and can reduce a reduction in suction force, and can attach a fine dust filter to the exhaust outlet of the soundproofing cylinder. It can also be applied to uses such as vacuum cleaners.

DESCRIPTION OF SYMBOLS 3 Electric blower 5 Dust filter 6 Soundproof cylinder 7 Exhaust outlet 8 Exhaust passage 10 Spacer 11 Lower case 12 Soundproof material 13 1st ventilation space 19 2nd ventilation space

Claims (5)

A soundproof cylinder containing an electric blower;
A fine dust filter formed in a substantially sheet shape covering the exhaust outlet of the soundproof cylinder,
A spacer having an air passage on the downstream side of the fine dust filter,
To cover the fine dust filter against the exhaust outlet of the soundproof cylinder,
An electric vacuum cleaner sandwiched between the soundproof cylinder and the spacer disposed between the outer members of the spacer. The vacuum cleaner according to claim 1, wherein the spacer is made of a breathable soft material. The vacuum cleaner according to claim 2, wherein the vent hole of the spacer is made of a soft material that is coarser than the fine dust filter and has high air permeability. The vacuum cleaner according to any one of claims 1 to 3, wherein a ventilation space having an opening hole shape or an opening recess shape is disposed at a portion of the spacer facing the exhaust outlet of the soundproof cylinder. The vacuum cleaner of any one of Claims 1-4 which fixed the fine dust filter and the spacer to the support member with the air permeability arrange | positioned in the downstream of the said spacer.