JPS6030213B2 - vacuum cleaner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention has a cylindrical coarse filter for filtering coarse dust arranged vertically in the dust collection chamber, and a filter for filtering fine dust arranged on the outside of the coarse filter. This invention relates to a vacuum cleaner equipped with a cylindrical fine filter.

Conventionally, as this type of vacuum cleaner, for example,
There is one shown in Japanese Patent No. 9-4197.

However, according to this method, the lower end of the effective cross-section part of the coarse filter is located at a lower position close to the bottom of the dust trap, so that the lower end of the coarse filter, especially the lower end, is placed close to the bottom of the dust collection part. The airflow that has passed through the effective filter section lifts up the fabric dust that has accumulated in the dust collection section, and this fine dust adheres to the outside of the fine filter again, accelerating the clogging of the fine filter, which quickly reduces the dust suction efficiency. It is pointed out that this will cause a decline.

Furthermore, it is pointed out that with respect to the fine filter, only the inner circumferential surface of the fine filter acts effectively as a sieving action, so that, together with the above, clogging of the fine filter is further promoted. However, in order to eliminate the various drawbacks of the conventional filter, the present invention particularly forms an impermeable part having a predetermined width in the vertical direction on the lower side of the coarse filter over the entire circumference. , at the bottom of the fine dust chamber outside its impermeable part,
A fine dust collection part is formed, and in the string dust chamber above the woven dust collection part, each lower end is located at approximately the same height as the upper end of the impermeable part, and each is made of oak material such as horizontal paper. A double inner and outer filter is provided which is rolled into a cylindrical shape and is applied to pongee. The groove is closed in an annular groove shape toward the ventilation passage leading to the
In particular, it is possible to prevent the dust accumulated in the fine dust moat from being blown up during operation of the electric blower, and to further increase the area over which the dust can pass through the inner and outer double filters. The purpose is to provide a vacuum cleaner that can exert good suction power over a long period of time.

The details will be explained below with reference to the drawings showing one embodiment.

1 in the figure is the main case of a vacuum cleaner, and an electric blower 11 is housed inside.

12 is a dust case detachably mounted on a receiving part 10a extending further forward from the front lower part of the main part case;
It has an inlet 13.

The main case 10 and the dust case 12 constitute a vacuum cleaner frame. 14G or one end is the front air inlet 13
The dust case 12 is a substantially L-shaped inlet pipe connected to the dust case 12, and the other end thereof extends vertically through a substantially central portion of the dust case 12 and is open downward.

Reference numeral 15 designates a lid body that opens and closes the lower opening of the dust case 12, and reference numeral 16 designates a cylindrical coarse filter disposed within the dust case 12 so as to surround the other end side of the suction pipe 14. The upper end communicates with the suction port 13, and the lower end opens in the same direction as the bonito case 12.

17 is a fine filter disposed between the coarse filter 16 and the inner wall of the dust case 12, and is composed of double inner and outer filters 17a and 17b arranged approximately in the same manner with an interval, The lower end is located above the lower end of the coarse filter 6.

The fine filter 7 is made of a relatively elastic material such as horizontal paper, and is formed by rolling the moat into a cylindrical shape without bending it into a wall shape. Reference numeral 18 denotes a lower filter frame fixed to the lower end of the fine filter 7, and the lower end side of the space surrounded by the dual inner and outer filters 7a and 17b is closed off by this filter frame 81.

The upper end side of the dual inner and outer filters 7 is fixed to the upper filter frame corner 9 with an annular groove opening so that the space surrounded by the filters 17a and 17M can be moved through the electric blower 116. has been done. Reference numeral 20 denotes a dust chamber partitioned inside the coarse filter block 6, and 21 denotes a dust chamber partitioned outside the coarse filter block 6, each of which opens at the entrance of the dust case roof 2. are doing.

Reference numeral 22 denotes a bowl-shaped mounting frame, which is held on the coarse filter 6 by having its lower end closed part iron-fitted to the outer periphery of the coarse filter 16.

Further, its upper end opening □ is shaped so as to create a slight gap with the lower end side of the cylindrical turtle 9a of the upper filter frame 19 extending along the inner wall of the dust case 12. 23 is a dust collection bag whose opening is detachably attached to the front mounting frame 22, 24 is a first packing provided between the lower end of the dust case 12 and the lid 15, and 25 is the coarse filter 6. This is a second packing provided between the lower end and the lid 15, and the bottom side of the dust collection bag 23 extends between the coarse filter 16 and the second packing 25.

Reference numeral 26 denotes an impermeable part formed all around the lower part of the coarse filter 6 with a predetermined width in the vertical direction, and its upper end is located at approximately the same height as the lower end of the fine filter 17. ing. Therefore, a fine dust reservoir 27 is formed on the mounting frame 22 at the bottom of the dust chamber 21. Reference numeral 28 denotes notches extending upward from the lower end of the fine filter 17, and four notches are formed at intervals in the circumferential direction as shown in FIG.

Reference numeral 29 denotes a large number of isolation parts inserted between the inner and outer double filters 17a and 17b, which are arranged at intervals in the circumferential direction.

The isolation members 29 are interconnected by connecting pieces 29a, and the isolation members 29 and the connecting pieces 29a are integrally formed of a synthetic resin material. The lower end of the separating member 29 engages with the notch 28, thereby preventing rotation of the separating member 29 in the circumferential direction. 301 is a gear constituting a dust removing device for the fine filter 7, and is rotatably supported around the suction port pipe 14 about the same axis as the flywheel of the fine filter 7, and Cord winding device inside case 101 (
(not shown).

Reference numeral 31 denotes a linear spring whose base end is attached to the gear 30, and whose tip end can flip the upper end of the isolation section village 29 as the gear 30 rotates.

In the device configured as described above, when the electric blower 11 is now driven, the air flow sucked from the suction port 13 is passed through the suction port pipe 14, the coarse filter 16t, the fine filter T.
The coarse dust contained in this sucked air is filtered out by the coarse filter 6, and the fine dust is filtered out by the fine filter 17, and the air is filtered into the coarse dust chamber 2Q and the pongee. The dust is accumulated in two dust chambers.

At this time, the fine filter 7 is the "internal and external dual filter 7".
Since the parts a and 7b are made of thin layers, even if the filter is not bent into a hair-like shape, the overlapping area is very large, and the ventilation resistance in the fine filter 17 part is reduced and the suction force is reduced. It will improve. When the gear 30 is driven to rotate, the linear spring 31 flips the upper end of each isolation member 29 as the gear 30 rotates, and at this time, the vibration generated in each isolation member 29 removes the dust attached to the fine filter 7. be dropped.

The screen dust released from this fine filter 17 is removed from the mounting frame 22.
The dust is accumulated on the upper fine dust reservoir section 27. In this embodiment, the fine filter 7 is simply rolled into a cylindrical shape without being bent into a hair shape, so that dust attached to the fine filter 7 is easily removed from the filter surface. The dust is released and falls downward, and the filter is completely restored to its original condition by dust removal work.
Further, in this embodiment, since the fine filter is formed in a cylindrical shape, the dust removal device for the fine filter can be easily constructed by a linear spring 31 that rotates around a single axis. At the same time, the isolation member 29 can vibrate the dual inner and outer filters 7a and 17b at the same time to easily remove dust from both filters, resulting in a simple structure.

When the electric blower 11 is driven again, air flows through the coarse filter 6, but since the air impermeable part 26 is formed at the bottom of the coarse filter 16, the dust collected in the dust collecting part 27 is removed. is not blown up by the air current.

In addition, the airflow flowing toward the outer filter 7b of the fine filter 17 after passing through the coarse filter 6 passes under the lower end of the fine filter 7, so that the air is collected in the fine dust trap 27. There is a risk that the pongee dust will be kicked up, but in this embodiment, the fine filter 7 has a cutout 28, so the air flowing toward the outer filter 7b flows through the cutout 28, causing even more pongee dust to be thrown up. is difficult to be lifted up. Therefore, the larger the notch 28 is, the harder it is for dust to be kicked up, but if it is made too large, the gutter area of the fine filter 7 will be reduced, which is bad.
According to experiments, there are 28 notches with a width of about 5 ribs and a length of about 35 ribs.
A sufficient effect was obtained by providing four such as shown in FIG. After removing the dust case 12 from the main case 10, when the lid 15 is rotated to open the opening □ of the dust case 12, the dregs in the dust chamber 20 are transferred to the dust collection bag 23. Can be replaced.

When the mounting frame 22 is removed from the coarse filter 6, the mounting frame 2
The pongee dust collected on 2 can be transferred to the dust collection bag 23. After removing the dust collection bag 23 from the mounting frame 22, the bag opening of the new dust collection bag 23 is attached to the mounting frame 22, and the mounting frame 22 is further supported by the coarse filter 6. Next, after closing the entrance of the dust case 12 with the lid 15, the dust case 1
If you attach 2 to the main case, you can use it as a vacuum cleaner again. FIG. 4 shows the vacuum cleaner when the dust collection bag 23 is not used, and unlike the vacuum cleaner shown in FIG. 1, the dust collection bag 23 and the mounting frame 22 are not present.

Therefore, the pouch dust collecting section 27 is formed on the lid 15, and other than that, there is no difference from that shown in FIG. 1. As described in detail above, the present invention includes vertically disposing a cylindrical coarse filter for filtering coarse dust in the dust bag chamber, and a filter for filtering pongee dust on the outside of the coarse filter. In particular, for a vacuum cleaner in which a cylindrical fine filter is arranged, an impermeable part having a predetermined width in the vertical direction is formed on the lower side of the coarse filter over the entire circumference, A dust trap is formed at the bottom of the dust chamber outside the impermeable part, and each of the dust chambers above the dust chamber has a lower end at approximately the same height as the upper end of the impermeable part. There are two inner and outer filters for filtering fine dust, each of which is formed by rolling up a monkey material such as monkey paper into a cylindrical shape. The space is closed by a frame, and the upper end of the space is closed in the form of an annular groove toward the ventilation path leading to the electric blower.

Therefore, the lower end effective perforation portion bordering the impermeable portion of the coarse filter and the lower end portions of the double inner and outer filters are substantially the same level as each other, and the bottom of the dust collecting portion is Since the electric blower is located considerably above the air blower, there is a possibility that the airflow that has passed through the lower end of the coarse filter, especially the effective filtration part, will kick up the dust accumulated in the paper dust collection part during operation of the electric blower. In addition, since the dual inner and outer filters make it possible to increase the dust area, the filters do not become clogged early, and dust suction efficiency can be maintained at a good level over a long period of time. It is something.

[Brief explanation of drawings]

Fig. 1 is a sectional view of essential parts of the vacuum cleaner of the present invention, Fig. 2 is a sectional view taken along the line 2-2 in Fig. 1, Fig. 3 is a sectional view taken along the line 3-3 in Fig. 2, and Fig. 4 is a sectional view taken along the line 3-3 in Fig. 2. is a sectional view of a main part of a vacuum cleaner without using a dust collection bag. In the figure, 12 is a dust case, 15 is a lid, 16 is a coarse filter, 17 is a fine filter, 2 rivers are coarse dust chamber, 21 is a dust chamber, 26 is an impermeable part, and 27 is a cloth dust reservoir. Department. Figure 2 Figure 3 Figure 1 Figure 4

Claims (1)

[Claims] 1 Inside the dust collection chamber that has an opening that opens downward,
In a vacuum cleaner in which a coarse filter formed in a cylindrical shape is disposed so that its axis extends in the vertical direction, and the opening is openably closed by a lid, a lower part of the coarse filter is arranged in the vertical direction. An impermeable part having a predetermined width is formed around the entire circumference, a fine dust trap is formed at the bottom of the fine dust chamber outside the impermeable part, and a fine dust trap is formed above the fine dust trap. Inside the fine dust chamber, there are double inner and outer filters for fine dust filtration, each of which has its lower end located at approximately the same height as the upper end of the impermeable part, and which is formed by rolling a filter material such as filter paper into a cylindrical shape. The lower end of the space between the inner and outer double filters is closed by a filter frame, and the upper end of the space is opened in the shape of an annular groove toward the ventilation path leading to the electric blower. Vacuum cleaner.