JPS6242717A - Dust collecting filter for vacuum cleaner - Google Patents

Abstract

PURPOSE:To obtain the titled dust collecting filter for a vacuum cleaner whereby clogging is prevented and the suction force is hardly decreased by using a nonwoven fabric having 1-5mum diameter of the single fiber, 10-30% packing fraction and 0.05-0.5mm thickness. CONSTITUTION:The nonwoven fabric is produced from the fibers of cellulose polyester, polyolefin, glass, etc. The diameter of the single fiber of the fibers to be used is regulated to 1-5mum and the packing fraction is controlled to 10-30%. The thickness is adjusted to 0.05-0.5mm. The aggregate of other fibers is bonded to one or both surfaces of the nonwoven fabric and integrated to increase the strength of the nonwoven fabric. As the integrating method, a low m.p. synthetic resin binder is coated and heat-pressed or sewing by a machine, needle punching, and welding by a high-frequency welder are carried out.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a dust collection filter for a vacuum cleaner.

BACKGROUND OF THE INVENTION There are two types of dust filters used in vacuum cleaners. One method is to repeatedly use filters made of materials such as woven fabrics, non-woven fabrics, and foamed urethane. The other one is a dust collection filter made of pulp.
It is a type that collects dust inside the dust collection filter and throws away the dust in a paper bag. The former uses filters that are used repeatedly, and dust is thrown up when the user throws away the trash, which is unsanitary and undesirable for the user's health.Also, it takes time and effort to remove the dust that adheres to the filter, making it difficult for the user to use the filter. hated.

On the other hand, the latter disposable type with a dust collection filter in a paper bag does not require the effort of cleaning the filter, and there is no inconvenience such as dust flying up when disposing of the garbage, making it a preferable method as a single filter for vacuum cleaners. It is.

However, there is a greater demand for filter-type vacuum cleaners that can be used repeatedly than disposable vacuum cleaners. This is because the suction power of the dust collection filter of disposable paper bags decreases before enough dust accumulates inside the dust collection filter of the paper bag, and even though there is space for collecting dust, new paper bags collect dust. A dust filter must be installed, and the problem is thought to be the early clogging of the paper bag dust filter.

Therefore, there is a need for a dust collecting filter that does not cause a decrease in suction power during the process of sucking up dirt.

Examples of paper bag dust collection filters include breathable single-layer paper commonly referred to as Japanese paper, and multi-layer paper. This type of filter has the disadvantage that the amount of dust it collects is small because it immediately becomes clogged due to the adhesion of dust. In other words, the amount of dust collected per unit volume is small. Therefore, in order to increase the amount of dust collected, there is a drawback that the area used must be increased to cover the area. Japanese Unexamined Patent Publication No. 15356/1983 proposes a two-layered paper made from pulp, consisting of coarse paper and dense paper, in order to improve the amount of dust collected per unit area. However, the ease with which clogging occurs is not satisfactory.

Therefore, there is no choice but to replace the paper bag dust filter with a new paper bag dust filter while there is still enough volume left in the paper bag dust filter to collect dust.

Problems to be Solved by the Invention The present invention provides a dust collector for a vacuum cleaner, which has a dust collection capacity equal to or greater than that of a paper bag dust collection filter, prevents clogging, and is less likely to cause a decrease in suction power. Its entire purpose is to provide a filter.

Means for Solving All Problems The present invention provides a dust collection filter for a vacuum cleaner, which is made of a nonwoven fabric having a single fiber diameter of 1 to 5 μm, a loading factor of 10 to 30 cm, and a thickness of 0.05 to 0.5 μl. It is.

In the present invention, the single fiber diameter is 1 to 5 μm, preferably 1 to 3 μm.
in the range of μm and a filling rate of 10 to 30%, preferably
In the range of 15-25%, further thickness 0.05-0.51
111 Preferably, by using a combination of nonwoven fabrics in the range of 0.08 to 0.3 mm, surprisingly 1 it is less likely to clog (< and has a higher collection performance than conventional paper bag dust collection filters). We found a range that is equal to or greater than the conventional one.Single fiber diameter is the thickness of the single fiber of the dust collection filter,
If it is less than 1 μm, clogging becomes large, and if it exceeds 5 μm, clogging occurs and the collection performance decreases.

The filling rate indicates the ratio of the rut fiber volume to the unit volume, and is calculated from the following formula.

Filling rate (chi) - (fabric weight/thickness)/density x 100 When the filling rate is less than 10%, clogging is less likely to occur, but the collection performance is lowered. When it exceeds 60 inches, the collection performance improves, but clogging occurs. When the thickness is less than 0.05 mm, the collection performance decreases, and when it exceeds 0.5 mm, the suction ability decreases. To measure the thickness, measure one place per 25mm of the filter, and
It is the average thickness per 0 old.

Nonwoven fabrics such as cellulose fibers, polyester fibers, polyolefin fibers, glass fibers, etc. may be used.

The manufacturing method may be any known method. Is the non-woven fabric even stronger? In order to increase the
Knitted fabrics, nonwoven fabrics, etc., or perforated sheet-like materials can also be joined and integrated within a range that does not impede the effects of the present invention.

Examples of this method include pasting a low-melting point synthetic resin adhesive and integrating the joints by heat and pressure bonding, sewing machine stitching, interlacing joining by needle punching, and melting joining using a high-frequency welder. Any method may be used. .

Clogging is the suction power (W) shown in Figure 1! Using the measuring device (dust on the dust collection filter) 1Oj; 1
．． 5fj, 10g, 209,409.60g.

The suction power when suctioning under 8 conditions of 80 g and 100 g is measured, and the degree of decrease in the suction power is shown. The suction power indicates the suction ability of the vacuum cleaner.
Measurements are shown in line %q according to os, and the unit is W (watt). The dust is J Engineering Sz test dust) 211t? Use it.

In Fig. 1, 1 is a vacuum cleaner, 2 is an air volume measuring device, 3 is a vacuum degree measuring device, and 4t'' is a dust collection filter.

The collection performance is measured by the number of particles that pass through the dust collection filter using the collection performance measuring device shown in Figure 2.
f. When an atmosphere with a constant dust concentration is sucked at 1.5 m5/min by a vacuum cleaner, how many pieces of dust pass through without being collected by the dust collection filter? 7 (-Measure with a particle counter. Measurement with a particle counter is 0.010F (-0,2
8]) 0.3pm per.

0.5μm, 1.0μm, 2.0μm, 5.0
Indicates the number of particles with a diameter of μm or more. In other words, it must be a grave collection filter with good collection performance, such as a large number of blood dust passing through (・), poor collection performance, and a small number of blood dust passing through (・tl)
1° 5 shown in FIG. 2 is a particle counter (K0-01 manufactured by Lyon Co.).

Example The invention will be explained by examples.

Example 1 Using a nonwoven fabric made of polyester long fibers and having the single fiber diameter, filling rate, and thickness shown in Table 1, the contents of the underside filter fi3000=-3, (height 18 false, width 15 aI &
I created a dust collection filter with a depth of 11 cm &) from floor 1 to floor 67.

Table 1 shows the collection performance and suction power of the dust collection filters-1 to I416 obtained in Example 1.

Example 2 All dust collecting filters P&11 to -6 having the same internal volume and size as Example 1 were prepared using a nonwoven fabric using polyester long fibers and having the single fiber diameter, filling rate, and thickness shown in Table 1. Table 1 shows the collection performance and suction power of the dust collecting filters 1 to 6 obtained in Example 2.

Example 6 Dust collecting filters No. 1 to No. 6 having the same internal volume as Example 1 were prepared using a nonwoven fabric using polyester long fibers and having the single fiber diameter, filling rate, and thickness shown in Table 1. Table 1 shows the collection performance and suction power of the dust collecting filters-1 to NQ6 obtained in Example 3.

Comparative Example 1 A single fiber diameter of 2 in the dust collection filter of a commercially available vacuum cleaner
The internal volume of the dust collection filter is 4000 = A3, (height 21-
, width 17-1 depth 11), and are shown in Table 1 as Comparative Example 1.

Comparative Example 2 A dust collection filter with the same internal volume as in Example 1 was prepared using glass fiber with a single fiber diameter of 0.2 μm, a filling rate of 8%, and a thickness of 0.6 mb, and is shown in Table 1 as Comparative Example 2. .

(As is clear from Table 1 below, as the amount of dust suction increases, the dust collection filter becomes clogged and the suction power value decreases.Mum Comparative Example Compared to the conventional dust collecting filter in No. 1, the filter of the present invention has a smaller decrease in suction power and is less likely to become clogged.In other words, the suction power for each amount of dust is lower than that of the conventional dust collecting filter. The filter of the present invention is about 10W higher,
This difference is a big difference in the suction power of the vacuum cleaner. Furthermore, it can be seen that the filter of the present invention has a small number of filters passing through and has an extremely excellent collection performance.

It can be seen that the dust collection filter of Comparative Example 2, the HKPA filter, has very good collection performance, but the initial suction power is low and it clogs easily, making it unsuitable as a dust collection filter.

It can be seen from the examples that when the single fiber diameter is 0.8 μm, the clogging resistance is preferably 1 to 5 μm, preferably 1 to 6 μm. It can be seen that a filling rate of 10 to 60% is best, as 5 inches causes poor collection performance and 40% causes clogging, and sometimes 15 to 25 inches is preferable when taking both the collection performance and clogging into consideration.

Regarding the thickness, 0.05 to 0.5 is good (especially 0.0
It can be seen that 8 to 0.3 m is good.

Effects of the Invention The super-collecting filter having the structure of the present invention is a filter that prevents clogging and is less likely to cause a decrease in suction power.

[Brief explanation of the drawing]

Figure 1 is a device that measures the total suction power, and Figure 2 is a device that measures collection performance. show. 1... Vacuum cleaner, 2... Landscape measuring device, 3...
True nitrogen measuring device, 4...dust collection filter, 5...)
9- Tickle counter.

Claims (1)

[Claims] Single fiber diameter 1-5 μm, filling rate 10-30%, thickness 0
．． A dust collection filter for a vacuum cleaner, characterized by being made of a nonwoven fabric with a thickness of 0.05 to 0.5 mm.