KR100462837B1 - A vacuum cleaner - Google Patents

Abstract

Provided is a cyclone canister type vacuum cleaner that can easily clean the dust box.

The cyclone type dust box 2 is installed in the cleaning main body 1, and an outer filter part is formed in the dust box 2 to form a first cyclone space between the dust box 2 and the inner wall. In the outer filter part, the inner filter part which forms a 2nd cyclone space with the inner wall of the said outer filter part is provided, and the said outer filter part is provided with the shading part extended toward the said dust box inner wall is provided with the vacuum cleaner. .

Description

Electric vacuum cleaner {A VACUUM CLEANER}

The present invention relates to a vacuum cleaner. More specifically, the present invention relates to an electric vacuum cleaner having a cyclone dust box.

Conventional vacuum cleaners, especially upright vacuum cleaners, are freely mounted on the suction path of the cleaning main body without using a disposable dust collecting paper pack, and have a vortex-shaped flow of air (so-called cyclone) inside. It is known to use a cyclone-type dust collector which is provided with a cylindrical filter in a dust collecting case for generating a dust, and is capable of accumulating the dust filtered by the filter in the dust collecting case. This dust collector is economical since it can be used semipermanently by the maintenance of a filter compared with a disposable carton.

As a cyclone type vacuum cleaner, the vacuum cleaner provided with the dust separation apparatus (Japanese Unexamined-Japanese-Patent No. 10-511880 etc.) which concerns on the invention of Daison is known. For example, the cyclone type vacuum cleaner shown in FIG. 10 generates a double cyclone by providing the inner cyclone case 52 inside the dust box 51. The lower part of the inner cyclone case 52 is hermetically closed with respect to the first cyclone space 54 of the dust box 51 by the cyclone tube 53. The upper part of the inner cyclone case 52 communicates with the 1st cyclone space 54 of the dust box 51 through the air permeable shroud 60.

Due to the negative pressure generated by a blower (not shown) connected to the exhaust port 58 of the upper end of the inner cyclone case 52, air containing dust is discharged from the outside through the dust box (the intake pipe 55). 51) It is introduced into the first cyclone space 54 inside, pivots inside the first cyclone space 54, and large dust falls and is deposited on the cyclone tube 53. The cyclone tube 53 is introduced into the second cyclone space 56 inside the inner cyclone case 52 through the shroud 60, and turns inside the second cyclone space 56, and a little larger dust falls. It accumulates in the space part 57 below. Air from which dust was removed is exhausted from the exhaust port 58 of the upper end of the inner cyclone case 52.

However, since the conventional vacuum cleaner shown in FIG. 10 is equipped with the cyclone tube 53 which isolate | separates the inside of the dust box 51 airtightly, a structure is complicated. Therefore, in order to remove dust deposited on the upper side and the lower side of the cyclone tube 53, the inner cyclone case 52, the cyclone tube 53 and the shroud 60 are all separated from the dust box 51 once. It is necessary to take it out, and there is a problem that cleaning in the dust box is quite difficult.

The present invention has been made to solve the problems related to the above, and an object of the present invention is to provide a cyclone canister type vacuum cleaner that can easily clean the dust box.

The vacuum cleaner of the present invention, the cyclone dust box is installed on the cleaning body,

In the dust box, an outer filter portion for forming a first cyclone space between the dust box inner wall is provided,

In the outer filter portion, an inner filter portion for forming a second cyclone space between inner walls of the outer filter portion is provided,

In addition, the outer filter portion, characterized in that the shading portion extending toward the inner wall of the dust box is provided.

It is preferable that the shading part is further provided in the lower part of the said inner filter part toward the inner wall of the said outer filter part.

It is preferable that the tip part of the said shading part is bent downward.

1 is a perspective explanatory view showing one embodiment of the vacuum cleaner of the present invention.

FIG. 2 is a plan explanatory view of the vacuum cleaner of FIG. 1.

3 is an explanatory diagram when the vacuum cleaner of FIG. 1 is viewed from the left side.

4 is a private facility name diagram of the dust box of FIG. 1.

5 is a front view of the dust box of FIG. 1.

6 is a longitudinal cross-sectional view of the dust box of FIG. 1.

7 is a longitudinal cross-sectional view of the vacuum cleaner of FIG. 1.

FIG. 8 is a cross-sectional view taken along the line VIII-VIII of FIG. 6.

9 is an explanatory cross-sectional view for explaining the dimensions of the dust box of FIG. 6.

10 is a cross-sectional view showing a conventional cyclone dust separator.

♠♠♠ Explanation of the Signs of the Main Parts of the Drawing ♠♠♠

1 Electric vacuum cleaner 2 Dust box

3 electric blower

Next, the vacuum cleaner of the present invention will be described in more detail with reference to the drawings.

1 is a private facility name diagram showing one embodiment of the vacuum cleaner of the present invention, FIG. 2 is a plan explanatory view of the vacuum cleaner of FIG. 1, FIG. 4 is a facility name of the dust box of Figure 1, Figure 5 is a front view of the dust box of Figure 1, Figure 6 is a longitudinal sectional view of the dust box of Figure 1, Figure 7 is a longitudinal sectional view of the vacuum cleaner of Figure 1, Figure 8 is a cross-sectional view taken along line VIII-VIII of FIG. 6, and FIG. 9 is a cross-sectional explanatory view for explaining the dimensions in the dust box of FIG. 6.

As shown in FIGS. 1-8, the vacuum cleaner of this embodiment is installed in the front part of the cleaning main body 1 of a canister type by inserting a cyclone type dust box 2 from upper part, and attaching and detaching it freely. In the rear part of the cleaning main body 1, the electric blower 3 is incorporated. In addition, although not shown, a series of suction hoses, suction pipes, and suction ports are connected to the connector 4 on the front end face of the cleaning body 1. Moreover, the cleaning main body 1 is provided with the front wheel 1a and the pair of rear wheels 1b and 1c so that the bottom surface can be moved.

As shown in FIGS. 4-6 and 8, the dust box 2 is a substantially cylindrical outer filter part 6 inside the transparent or semi-transparent dust box body 5 formed of the substantially transparent transparent synthetic resin etc., respectively. ) And the inner filter part 7 are arranged concentrically with the dust box body 5.

As shown in FIG. 6, the outer filter part 6 covers the outer cylindrical member 8 and the outer filter which surrounds around the some slit 8a formed along the longitudinal direction in the side surface of this outer cylindrical member 8, and is shown. It consists of (9).

Moreover, on the outer peripheral side surface of the outer cylindrical member 8, the shading part 10 extended toward the inner wall of the dust box main body 5 protrudes. A gap 34 is formed between the inner wall of the dust box body 5 and the shade 10. Therefore, the first cyclone space 25 surrounded by the inner wall of the dust box body 5, the outer filter 9, and the shade 10 between the inner wall of the dust box body 5 and the outer filter part 6. And a space portion 26 for collecting dust communicating through the first cyclone space 25 and the gap 34.

Since the tip portion 10a of the shading portion 10 is bent downward, when the dust moves from the first cyclone space 25 to the space portion 26 through the gap 34, the dust portion 10a Since less work takes), it is preferable.

Similarly, the inner filter part 7 consists of the inner side cylindrical member 11 and the inner side filter 12 which coats the circumference | surroundings of several slits 11a formed in the longitudinal direction in the side surface of this inner side cylindrical member 11 separately. .

Moreover, on the outer peripheral side surface of the inner side cylindrical member 11, the shading part 13 extended toward the inner wall of the outer side cylindrical member 8 protrudes. A gap 35 is formed between the inner wall of the outer cylindrical member 8 and the shade portion 13. Therefore, the second cyclone space 27 surrounded by the inner wall of the outer cylindrical member 8, the inner filter 12, and the shade 13 between the inner wall of the outer cylindrical member 8 and the inner filter portion 7. , And a space portion 28 for collecting dust communicating through the second cyclone space 27 and the gap 35 is formed.

Like the shade portion 10, the tip portion 13a of the shade portion 13 is also bent downward, so that dust moves from the second cyclone space 27 to the space portion 28 through the gap 35. At this time, since dust is less likely to be caught on the tip portion 13a, it is preferable.

As shown in FIG. 6, the outer filter part 6 and the inner filter part 7 are being fixed to the lower surface of the upper lid part 14 which closes the upper end opening of the dust box main body 5. As shown in FIG.

Specifically, the middle lid part 8b extended to the upper part of the outer side cylindrical member 8 is fitted to the inner wall of the upper lid part 14 in the state which clamped the sealing 8c. Between the middle lid part 8b and the dust box main body 5 is hermetically sealed by the sealing 8d provided in the edge part of the middle lid part 8b. On the other hand, the cylindrical holder 11b having a plurality of slits extended on the upper portion of the inner cylindrical member 11 is housed inside the upper lid portion 14 in a state of holding the cylindrical filter 29. have. Between the cylindrical holder 11b and the middle lid part 8b is hermetically sealed by the sealing 11c provided in the lower end of the outer peripheral surface of the cylindrical holder 11b.

The intake pipe 15 protrudes from the side surface of the dust box 2, and the front end side opening 16 of the intake pipe 15 is formed at the center of the width direction of the cleaning main body 4 (Fig. 1). And the center portion of the dust box 2 in the width direction so as to be directly connected to the dust box 2.

In addition, since the guide rib 18 extends in the direction along the inner surface of the dust box 2 in the vicinity of the bottom opening 17 of the intake pipe 15 on the inner surface of the dust box 2, The guide rib 18 allows the air flowing into the dust box 2 through the intake pipe 15 to flow in the direction in which the cyclone generated inside the dust box 2 flows (for example, a clock in FIG. 8). Direction). As a result, air containing dust sucked from the intake pipe 15 shown in FIG. 8 turns in the dust box 2, and high dust collection efficiency can be obtained.

In addition, as shown in FIG. 6, the bottom lid 21 of the dust box main body 5 has a bottom lid 21 freely opened and closed by a hinge 20 provided below the handle 19. The bottom lid 21 presses the upper part of the lever 22 provided below the intake pipe 15, so that the clamp 23 formed at the lower end of the lever 22 catches the hook 24 on the bottom lid 21 side. ), The lower end opening of the dust box main body 5 is opened.

Therefore, since the dust accumulated in the space 26 and the space 28 inside the dust box body 5 falls when the bottom lid 21 is opened, the inside of the dust box 2 can be easily cleaned. .

The type and material of the outer filter 9 and the inner filter 12 are not particularly limited in the present invention, but, for example, a mesh filter is formed in a tubular shape on the outer circumference of a normal body which is a ventilation path of filtered air. An installed filter or the like is employed. In addition, other filters, such as a filter in which a filter paper filter folded into a pleats shape (wrinkle box shape) is provided in a tubular shape, may also be employed.

Next, each flow of dust and air in the vacuum cleaner of the present embodiment will be described.

Air containing dust sucked from the outside of the cleaning main body 1 enters into the dust box 2 through the connector 4 and the intake pipe 15, as shown in FIGS. 6 to 7, and the dust box body ( Turn along the inner wall of 5). Specifically, in the first cyclone space 25, air flows inside the outer filter 9 while turning, and dust is sucked downward through the gap 34, and the bottom of the dust box body 5 is located. It is deposited in the space 26.

Similarly, air flowing into the outer filter 9 also turns. Specifically, in the second cyclone space 27, air flows into the inner filter 7 while turning, and the space portion 28 below the shade 13 becomes negative pressure with turning. The dust having a size that cannot pass through the inner filter 12 is sucked downward through the gap 35 and is deposited in the space portion 28 at the bottom of the dust box body 5.

In addition, since the bottom lid 21 is provided with a packing 36 for closing the gap between the bottom edge of the outer cylindrical member 8 and the bottom lid 21, the bottom lid 21 is provided along the bottom lid 21. Air does not leak from the space portion 26 to the space portion 28.

The dust filtered by the dust box body 5 is further filtered by the cylindrical filter 29 inside the upper lid portion 14, and then dusted from the exhaust port 30 at the rear end of the upper lid portion 14. After exiting the box 2, it enters the electric blower 3 through the communication passage 31 shown in FIG. 7, is filtered from the electric blower 3 through the exhaust filter 32, and the cleaning main body 1 is removed. It is discharged | emitted outside through the mesh of the exhaust port 33 of the mesh shape formed in the side surface, and the mesh of the rear wheel 1b or 1c.

In this embodiment, since the cylindrical filter 29 is employ | adopted, a large surface area can be obtained with a small outer diameter compared with a plate-shaped filter. Therefore, since it can be made smaller than a plate-shaped filter, and a large surface area makes wind speed small, and it becomes difficult to penetrate dust deeply inside a filter, clogging becomes difficult.

Next, the vertical distance between the outer filter 9 and the inner filter 12 shown in FIG. 9 will be described.

In the process of removing the dust from the intake pipe 15 of the dust box 2 with the outer filter 9 of the outer filter part 6, the intake range of the mesh-like outer filter 9 and the inner filter 12 The distance H ₁ from the intake range is specified.

With respect to the case of setting the distance H ₁ in three 9.5㎜, 0㎜ and -9.5㎜, it was evaluated in the collection efficiency. As a result, the collection efficiency was higher in the order of> 9.5 mm in the case of> 9.5 mm in the case of 9.5 mm.

Such difference in collection efficiency can be considered as follows. That is, compared with the outer 1st cyclone space 25, in the inner 2nd cyclone space 27, the rotational force of wind becomes weak. Therefore, when the inner filter 12 is disposed in the suction direction of the outer filter 9, dust is linearly blown from the outer filter 9 to the inner filter 12 without turning inside the second cyclone space 27. Since the contained air flows, it is thought that dust collection efficiency becomes low. Therefore, it is preferable to arrange | position the outer filter 9 so that it may become a position slightly higher than the inner filter 12, Preferably it is about 9.5 mm.

Further, the distance H ₁ is greater, the collection efficiency is improved, however, since the design, the height of the cleaner main body is restricted, 9.5㎜ level is the upper limit.

Next, the relationship between the distance D ₁ between the inner wall of the dust box main body 5 shown in FIG. 9 and the intake portion (slit 8a in FIG. 9) of the outer filter portion 6 will be described.

The distance D ₁ has a great influence on the dust collection efficiency and the suction rate (suction work rate) in the first cyclone space 25. The larger the distance D ₁ is, the more effectively the centrifugal separation moves, and the less likely that dust is sucked into the intake section of the outer filter section 6, the higher the collection efficiency.

On the other hand, when the distance D ₁ is increased, when the inner diameter of the dust box main body 5 is made constant, the outer diameter of the intake portion of the outer filter portion 6 and the area proportional thereto are reduced, and the amount of air is lowered and the suction force is weakened. .

For example, the inner diameter of the dust box main body 5 was 130 mm in diameter, the outer diameter of the intake part of the outer filter part 6 was changed, and the collection efficiency and the suction working rate were measured. The results are as follows.

Table 1

Outer diameter (diameter mm) of the intake portion of the outer filter portion 6 90 80 70 60 Collection rate (%) 93 95 97 98 Suction working rate (W) 375 365 360 355

Collection efficiency: Inhale 10 g of four kinds of JIS Z8901 test dusts (talcum powder).

Suction working rate: measured by the measuring method specified in JIS C9802.

From the results in Table 1, the same collecting efficiency (97 to 98%) as the paper pack type, which is the mainstream of the current vacuum cleaner, is secured, and the maximum suction work rate is 60 to 60 to the outer diameter of the intake portion of the outer filter part 6. It is between 70 mm (inner diameter of the dust box main body 5 is 130 mm). Therefore, in the vacuum cleaner which collects by the centrifugal separation method, it is most suitable that the outer diameter of the intake part of the outer filter part 6 shall be 54 to 56% of the inner diameter of the dust box main body 5.

Next, the relationship of the distance D2 between the inner wall of the outer cylindrical member 8 of the outer filter part 6 shown in FIG. 9, and the intake part (slit 11a in FIG. 9) of the inner filter part 7 is demonstrated.

The distance D2 greatly influences the dust collection efficiency in the second cyclone space 27. As the distance D2 is smaller, dust is not sufficiently centrifuged, but is sucked into the intake portion of the inner filter portion 7, and the collection efficiency is lowered.

For example, the inner diameter of the outer cylindrical member 8 of the outer filter part 6 was 60 mm in diameter, the outer diameter of the intake part of the inner filter part 7 was changed, and collection efficiency was measured. The results are as follows.

TABLE 2

Outer diameter (diameter mm) of the intake portion of the inner filter portion 7 35 30 Collection efficiency (%) 96 98

From the result of Table 2, in order to ensure the collection efficiency (97-98%) like the paper pack type which is the mainstream of the current vacuum cleaner, the outer diameter of the intake part of the inner filter part 7 is 30 mm or less (outer filter part). The inner diameter of the outer cylindrical member 8 of (6) is 60 mm). Therefore, when the outer diameter of the intake portion of the inner filter portion 7 is 50% or less of the inner diameter of the outer cylindrical member 8 of the outer filter portion 6, a high collection efficiency such as a paper pack can be obtained.

Next, the relationship between the distance D ₃ between the inner wall of the dust box main body 5 and the shade 10 shown in FIG. 9 will be described. For example, under conditions of a flow rate 1.6 ~ 1.7 ㎥ / ㎜, the distance D ₃ was subjected to the evaluation of the capture efficiency in the context of 7㎜ and 10㎜.

When the distance D ₃ was 10 mm, dust did not fall while turning in the first cyclone space 25 on the shade 10, and it was difficult to accumulate in the space 26 under the shade 10. In addition, since dust continuously rotates in the first cyclone space 25, the surface garbage adheres to the mesh of the outer filter 9 or penetrates into the outer filter part 6, thereby lowering the collection efficiency. . On the other hand, when the distance D ₃ is 7 mm, the problem in the case of 10 mm is solved, and a high collection efficiency can be obtained.

As described above, it is considered that the smaller the distance D ₃ is, the higher the collection efficiency is. However, if the distance D ₃ is too small, dust is likely to be clogged in the gap 34 between the inner wall of the dust box body 5 and the shade 10. Therefore, the distance D ₃ is determined in consideration of the size of the dust.

Next, the distance D ₄ between the inner wall of the outer cylindrical member 8 of the outer filter part 6 shown in FIG. 9 and the shading part 13 of the inner filter part 7, and the upper surface and the bottom lid of the shading part 13 ( 21) will be described with respect to the relationship between the distance H ₂ between the.

The distance D ₄ and the distance H ₂ greatly influence the dust collection efficiency in the second cyclone space 27. In the second cyclone space 27, the dust passing through the outer filter part 6 is once again separated from the dust and air. At this time, the separated dust is sucked into the gap 35 between the inner wall of the outer cylindrical member 8 and the shade portion 13 (because the distance D ₄ is narrow and the flow velocity is high). Since the dust separated in the second cyclone space 27 is relatively fine, there is no problem in the collection efficiency if the distance D ₄ is 1 mm or more. In addition, if the distance H ₂ is short, there is a problem that the dust accumulated in the space 28 is sucked up again by the intake portion of the inner filter portion 7.

Therefore, in order to secure the collection efficiency (97-98%) similar to the paper pack type which is the mainstream of the current vacuum cleaner, if the distance D ₄ is in the range of 1-3 mm and the distance H ₂ is 30 mm or more, high collection like a carton Efficiency can be obtained.

According to the present invention, since it has two cyclone spaces in the dust box, it can have high dust collection efficiency. Further, by providing a shade portion extending toward the inner wall of the dust box, the cyclone space and the space portion for collecting dust can be formed in a simple configuration. Therefore, dust accumulated in the space portion in the dust box can be easily removed, and the dust box can be easily cleaned.

Claims (3)

A cyclone type dust box is installed on the cleaning body, and an outer filter part is formed in the dust box to form a first cyclone space between the dust box inner wall, In the outer filter portion, an inner filter portion for forming a second cyclone space between inner walls of the outer filter portion is provided, In addition, the outer filter unit, the electric vacuum cleaner is provided with a shading portion extending toward the inner wall of the dust box. The method of claim 1, And a shade portion is further provided below the inner filter portion toward an inner wall of the outer filter portion. The method according to claim 1 or 2, An electric vacuum cleaner comprising a tip portion of the sunshade bent downward.