JPH01299526A - Vacuum cleaner - Google Patents

Abstract

PURPOSE:To facilitate assembly of a filter further enabling air-tightness to be surely held by forming a holding frame for holding a filter member as an integrally formed molded product having a retaining part in one end face and a large opening part in the other end face, and providing a seal material between the holding frame and the peripheral edge part of the filter member in a side of the large opening part. CONSTITUTION:An exhaust filter 41 comprises a filter member 42 and a holding frame 43 secured air-tightly holding the periphery of member 42. The filter member 42 is formed by folding in a pleat shape a sheet-state material molded by mixing a metal fiber with a very fine glass fiber. While the filter member 42 provides in its both surfaces two or more thread shaped separators 44 for holding a pleat pitch. A retaining part 46 is adapted from behind to a rear face peripheral edge part of the filter member 42 fitted into the holding frame 43, and applying a seal material 48 to be adhesively attached over the full periphery between a front face peripheral edge part of the filter member 42 and an internal peripheral surface of the holding frame 43 in a side of a large opening part 45, air-tightness is held between the filter member 42 and the holding frame 43.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Field of Application) The present invention relates to a vacuum cleaner, and more particularly, to a vacuum cleaner equipped with an exhaust filter that can exhaust air with high purity.

(Prior art) In conventional vacuum cleaners, dust sucked in from the suction port of the vacuum cleaner body is filtered through a filter attached to the dust collection part of the vacuum cleaner body, and the filtered air is sent to an electric blower. A structure was adopted in which the exhaust air was exhausted from the exhaust side to the outside of the main body of the lifting machine. In a vacuum cleaner having this conventional structure, the east and west filters can capture dust of about 1 μm, but there is a problem in that fine dust smaller than that is discharged from the vacuum cleaner body along with the exhaust air.

Therefore, conventionally, in order to collect the minute amount of dust in the exhaust air,
A high-performance exhaust filter made of glass TAN or the like and folded into a pleated or accordion shape is held in a substantially rectangular holding frame. Vacuum cleaners placed on the loss side began to be used. In a conventional vacuum cleaner of this kind, a pair of frame members having a substantially U-shape are combined to form a substantially rectangular holding frame of 1M, and the inner surface of this holding frame has a A structure has been adopted in which the applied adhesive maintains airtightness between the holding frame and the periphery of the filter member, and also allows identification of the two. When assembling, first, adhesive is applied almost entirely to the inner surface of each frame member, then a filter member is fitted and glued into one frame member, and then this filter member is attached to the other frame member. 1B by fitting the frame members of ? '? At the same time, in order to engage both frame members and further improve airtightness, an adhesive was injected between the edge of the frame member and the edge of the filter member. However, this conventional structure required a large number of assembly steps and increased costs. In addition, there have been quality problems such as air leakage from the engaging portions of the rod members and damage to the filter member during assembly.

Incidentally, filter members are manufactured by, for example, folding them in while being unwound from a roll. However, since the curls of the roll remain, in order to obtain higher collection and ventilation performance in the air path, it is necessary to It is necessary to distinguish between (4) It is better to place the filter member with the widened pitch of the folds on the upstream side; if it is reversed, there will be a difference of 28 degrees in pressure loss. Therefore, conventionally, a structure has been adopted in which the upstream side and the downstream side of the filter member can be distinguished by marking the filter member with oil-based ink or the like. However, with this conventional structure, ink bleeding and damage to the filter member may occur.

(Problems to be Solved by the Invention) As described above, in conventional vacuum cleaners equipped with high-performance exhaust filters, the holding frame that airtightly holds the filter member is constructed by combining a pair of frame members. In addition to increasing assembly man-hours and costs, there are problems such as damage to the filter member during assembly and air leakage between frame members during removal. Further, since the filter member is marked with ink or the like in order to distinguish between the upstream side and the downstream side of the filter member, there is a problem that smearing, JIam, etc. occur on the filter member.

The purpose of the present invention is to solve the above-mentioned problems, to make it possible to assemble a high-performance exhaust filter easily and inexpensively, to prevent the filter member from being damaged during assembly, and to ensure that airtightness is maintained. To provide a vacuum cleaner in which exhaust air can surely pass through a filter member. Another object of the present invention is to make it possible to distinguish between the upstream side and the downstream side of the filter member without degrading the quality of the filter member.

(Structure of the Invention) (Means for Solving the Problems) The electric h1 remover of the present invention includes an electric blower storage section that incorporates an electric blower, and a suction blower located on the negative pressure side of the electric blower storage section. It is located between a dust collection section provided with a dust collection filter that collects dust sucked in through the mouth, and an exhaust section that communicates with the exhaust side of the electric blower storage section and the outside. 1
A vacuum cleaner main body having an exhaust filter mounting part to which an exhaust filter for collecting 11 is removably mounted, and
The exhaust filter includes a filter member folded into pleats, separators that are provided on the upstream and downstream sides of at least both edges of the filter member in the direction in which the pleats extend, and hold the bits of the pleats; The holding frame is formed in an integrally molded cylindrical shape and has a presser portion on one end surface that comes into contact with one end surface of the filter member. The other end surface has a large opening large enough to allow the filter member to pass through, and on the side of the large opening there is a gap between the holding frame and the peripheral edge of the filter member fitted in the holding frame. A sealing material made of adhesive or the like is used to maintain airtightness throughout.

Further, the number of separators may be different between the upstream side and the downstream side of the filter member.

(Function) In the vacuum cleaner according to claim 1 of the present invention, when assembling the exhaust filter, first, the filter member is fitted into the integrally molded cylindrical holding frame from its large opening.

In this state, one end surface of the filter member is brought into contact with the presser portion of one end surface of the holding frame. Next, a sealant is applied over the entire circumference between the holding frame and the peripheral edge of the filter member on the large frontage side. In this state, the airtightness between the holding frame and the periphery of the filter member is maintained, but especially at both edges of the filter member in the direction in which the pleats extend, the separator that maintains the pitch of the pleats is placed on the upstream and downstream sides. Since the sealing material is provided on the side and fills the gaps between the folds, airtightness is maintained even if the sealing material is provided only on the large opening side.

Further, in the vacuum cleaner according to the second aspect of the present invention, an assembly worker identifies the upstream side and the downstream side of the filter member based on the difference in the number of separators provided on the upstream side and downstream side of the filter member.

(Example) The configuration of an embodiment of the present invention will be described with reference to the drawings.

In Fig. 1, 11 is a vacuum cleaner body, and an electric blower 12
a collection section 15 formed on the negative pressure side of the electric blower storage section 13 and to which a paper dust collection filter 14 is detachably attached; The exhaust chamber 16 is formed in communication with the positive pressure side of the section 13. And this vacuum cleaner body 1
1, there is a dust collecting unit lid 11 that opens and closes the dust collecting unit 15.
is provided to be openable and closable, and a suction port 18 is formed in the dust collecting part lid 17 to communicate with the dust collecting part 15 and to connect a connecting pipe of a hose in a detachable and rotatable manner. Facing the inside of the dust collecting section lid 11, the vacuum cleaner main body 11 holds the bag-shaped dust collecting filter 14 with its opening plate 19 detachably attached thereto. The suction port 18
A holding member 20 is provided which is airtightly connected to the holding member 20 . The suction port 18 is also provided with a shutter 21 that can be opened and closed to open the suction port 18 when a hose connection pipe is not connected. A partition 22 is provided between the dust collection section 15 of the cleaner body 11 and the electric blower storage section 13, and a lattice-shaped ventilation section 24 is formed in the partition 22. A sub-dust collection filter 25 is provided in the partition part 22 facing the ventilation part 24 and located on the side of the dust collection part 15' and is detachable. It is designed to capture leaked dust.

Further, the periphery of the suction side of the electric blower 12 housed in the electric blower storage section 13 of the electric vacuum cleaner main body 11 is connected to the partition wall 26 formed at the front of the electric blower 1711 and the rock storage section 13.
It is airtightly abutted around the ventilation hole portion 27 of the air conditioner with a backing 28 interposed therebetween. Further, the rear part of the electric blower 12 is supported by a support wall 29 via a backing 30. And this electric transmission I! The exhaust chamber 16 is formed in the rear part of the one-machine storage section 13 in communication with a ventilation section (not shown) of the support wall 29.

The exhaust chamber 16 has a box-shaped exhaust filter mounting part 33 formed in the upper part thereof with a frontage part 32 that is opened when the exhaust part cover 31 is opened. Grid-shaped ventilation portions 36 and 37 are formed in the front wall portion 34 and rear wall portion 35 of the exhaust filter S mounting portion 33.

Reference numeral 41 denotes an exhaust filter that is removably installed in the exhaust filter attachment 33, and this exhaust filter 41 is connected to 1. As shown in FIGS. 2 to 7, it consists of a filter member 42 and a holding frame 43 that is fixed to the filter member 42 in an airtight manner.

The filter member 42 is a high-density, high-efficiency filter member (
0.3JIIRDOP, collection efficiency $99.97% or more)
So, the main component is thin glass iam, and metals such as copper are mixed to form 1! The sheet-like body is bent into an accordion shape to form a rectangular parallelepiped shape as a whole. Note that the reason why the filter member 42 is folded into pleats is to make the area of the filter member 42 as large as possible.

Further, on both sides of the filter member 42, that is, on the upstream side and the downstream side, a plurality of thread-like separators 44 made of synthetic resin or UL are provided to maintain the pitches or intervals of the folds of the filter member 42. . These separators 44 are made of thread coated with thermoplastic resin, for example, and are explosively bonded to the filter member 42 by hot melting. As shown in FIG. 8, the separator 44 is folded in a pleat shape along the folds of the filter member 42, extends in a direction perpendicular to the folds of the filter member 42, and extends downward from its upper edge. Continuous to the edge. Further, the number of separators 43 is different on both sides of the filter member 42, as shown in FIGS. 5 and 7. In particular, in this embodiment, the number is increased on the upstream side, but it may be increased on the downstream side. Note that all the separators 44 on the downstream side sandwich the filter member 42 between the separators 44 on the upstream side. Further, separators 44 are provided on both upstream and downstream sides of the filter member 42 in the direction in which the pleats extend, and the gaps between the pleats are filled in the filter member 42 at both side edges. After all, when the distance between the leverators 44 on both side edges, or the 18 distance between the separator 44 on the downstream side and the separator 44 adjacent thereto, is defined as a, the relationships shown in FIGS. 5 and 7 are obtained. A separator 44 is provided.

Further, the holding frame 43 is integrally molded from synthetic resin or the like, and is formed into a short rectangular cylindrical shape. The holding frame 43 has a size such that the filter member 42 can fit therein, and the entire front end surface is opened to form a large opening 45 through which the filter member 42 can pass. Further, a presser portion 4G bent inward is formed at the peripheral edge of the rear end surface of the holding frame 43, and the inside of this presser portion 46 is a small opening 47 smaller than the front shape of the filter member 42. ing. Furthermore, a protruding edge 49 on which a seal backing 48 is wound and fitted is provided protruding approximately at the center in the thickness direction of the outer periphery of the holding frame.

The filter member 42 is fitted into the holding frame 43, and the presser portion 4 is attached to the peripheral edge of the rear surface of the filter member 42.
G is abutted from the rear, and a sealing material 48 such as an adhesive made of polyurethane or the like is placed between the front peripheral edge of the filter member 42 and the inner peripheral surface of the holding frame 43 on the large opening 45 side. The filter member 42 and the holding frame 43 are bonded together,
Airtightness between the two is maintained. Note that a sealing material 50 is applied to the separator 44 at both left and right edges of the filter member 42 .

Further, a seal backing (not shown) is provided on the inner surface of the exhaust section lid 31 and comes into contact with the periphery of the opening 32, so that the opening 32 is airtightly closed by the exhaust section lid 31. ing. Also, although this exhaust section cover body 31 is not shown, the exhaust section cover 31 is located on the negative side. It has an engaging protrusion that removably engages with a concave engaging part formed on one side of the opening 32 of No. A hole is formed, and the engaging protrusion on one side of the exhaust section cover body 31 is engaged with the engaging part on the - side of the opening 32, and the screw inserted through the hole is inserted into the opening 32 to attach the screw on the other side. When the exhaust section cover 31 is screwed into a screw hole on the periphery of the exhaust chamber 16 and closes the opening 32 of the exhaust chamber 16, the rib-shaped portion 51 protruding from the inner surface of the exhaust section cover 31 closes the exhaust filter 41. The seal backing 48 is pressed against the inner surface of the exhaust chamber 16, and the entire circumference of the exhaust filter 41 is held in airtight contact with the seal backing 48.

Further, an accessory storage space 56 is formed above the electric blower storage section 13 and the exhaust chamber 16 of the cleaning main body 11, and is opened and closed by a storage section lid 55, as shown in FIG. , the exhaust section cover 31 is arranged so that the bottom part of the accessory storage space 56 is formed by the exhaust section cover 31.
is arranged in the accessory storage space 11156. This accessory storage space 56 is designed to store accessories 57 such as a floor brush and a hanging spout. J'! A storage container body 55 to be closed is attached to the rear upper part of the vacuum cleaner main body 11 with a shaft 58 so as to be openable and closable. Further, the storage portion lid 55 is provided with a clamp portion 59 at the front portion.

Furthermore, said exhaust′! The vacuum cleaner body 11 at the rear of ¥1G
A lattice-shaped exhaust part 60 is formed on the rear surface, an exhaust bush 61 is provided on the rear side of this exhaust part 60 so as to be openable, and a lattice-shaped ventilation part 62 is formed in this exhaust cover 61. ing. The inner surface of this exhaust cover body 61 is made of activated carbon or the like.
R odorant was added to polyester resin fiber and Voliv [1 pyrene resin l! IA odor filters made of chicks etc. are stacked in multiple layers and held together by heat sealing, or particulate air fresheners are made of polyester resin fibers and polypropylene resin tllf.
A sub-exhaust filter 63 having deodorizing properties, such as an aroma filter formed in multiple layers such as L and held together by heat sealing, is removably attached. The exhaust cover 61 is rotatably supported by a shaft 64 at the lower rear surface of the main body 11.

Next, the operation of this embodiment will be explained.

First, a method for assembling the exhaust filter 41 will be explained.

First, as shown in FIG. 2, the filter member 42 is fitted into the holding frame 43 through the large opening 45. In this state, the rear peripheral edge of the filter member 42 is brought into contact with the presser portion 46 of the holding frame 43. Next, on the large opening 45 side, the sealing material 50 is applied by pushing it out from a nozzle or the like over the entire circumference between the inner peripheral surface of the holding frame 43 and the rear peripheral edge of the filter member 42 .

In this way, the filter member 42 and the holding frame 43 are airtightly bonded. In particular, at the left and right edges of the filter member 42 in the direction in which the folds extend, the large openings 45 are formed because the gaps between the folds are filled with the separator 44.
Even if the sealing material 50 is provided only on the side, airtightness is maintained.

Note that the filter member 42 is connected to the upstream Zunawara separator 4.
It is preferable to assemble the filter member 42 into the holding frame 43 so that the surface with more numbers 4 is located on the large opening 45 side. The upstream side and the downstream side can be easily and reliably identified.

When attaching the exhaust filter 41 to the vacuum cleaner main body 11, first open the storage section cover body 55, and then open the exhaust section body 31.
is removed, the opening 32 is opened, and the exhaust filter 41 is inserted into the exhaust filter mounting part 33. At that time, the exhaust filter 41
The side with the sealing material 50 is directed toward the electric blower 12 side, that is, the upstream side in the exhaust chamber 16.

Next, open the opening 32 of the exhaust chamber 16 with the exhaust unit body 31.
11, the protruding inner surface of the exhaust part body 31 and the tab-shaped part 51 seal the seal backing 48 of the 1-atm filter 41.
At the same time, this seal backing 48
The exhaust filter 41 is pressed into contact with the inner surface of the exhaust filter mounting part 33 , and the entire periphery of the exhaust filter 41 is held in airtight contact with the seal backing 48 , and the upstream side of the exhaust filter 41 on the electric blower storage part 13 side and the downstream side of the exhaust chamber 16 The sides are airtightly partitioned by a single seal backing 48, and the seal backing on the inner periphery of the exhaust section body 31 is located at the periphery of the opening 32 and is pressed against the bottom of the accessory storage space 56, thereby forming an exhaust chamber. 16 openings 32 are sealed.

Then, take out the necessary accessories and close the storage lid 55. Further, an exhaust filter 63 is installed inside the exhaust cover 61 of the exhaust chamber 16 to close the exhaust cover 61.

Then, open the dust collection unit lid 17, attach the eye plate 19 of the dust collection filter 14 to the holding member 20, close the lid 11, and connect the mouth of this filter 14 to the suction port 18 airtightly. ,
The shutter 21 of the suction port 18 is opened to connect a suction hose connection pipe, and further, an extension pipe, a suction brush, etc. are connected to the suction hose connected to this connection pipe.

When the electric blower 12 is driven in this state, the dust flowing into the dust collecting section 15 from the suction port 18 is captured by the dust collecting filter 14, and the air filtered by this dust collecting filter 14 is further filtered through the sub dust collecting section. Filtered at 25. These I
I! The filter 14.25 collects coarse dust of 1'ts or more and 18M. The air that has passed through the sub dust collection filter 25 is then sucked into the suction side of the electric blower 12, and exhausted into the exhaust chamber 16 from the discharge side of the electric blower 1fi12.
In this exhaust chamber 16, the exhaust air is filtered through a high-performance live filter 41.
It is further filtered. Here, dust collection filter 14.25
The fine tl contained in the bleed air that was not collected by
JI2! The exhaust air is filtered with a 0.3-voice DOP collection efficiency of 99.97% or more, and the exhaust air is further deodorized by passing through an exhaust filter 63 having deodorizing properties to be deodorized or deodorized such as fragrance. Clean exhaust air is exhausted from the exhaust gas.

According to the above configuration, since the holding frame 43 that holds the high-density filter member 42 of the live filter 41 is made into an integrally molded product, ease of assembly is improved, costs can be reduced, and variations in the quality of the high-performance exhaust filter 410 are reduced. It becomes less.

Furthermore, since no excessive force is applied to the filter member 42 during assembly, damage to the filter member 42 can be prevented.

In general, airtightness between the filter member 42 and the holding frame 43 can be maintained easily and reliably, and air can be removed from the holding part of the frame members as in the case where a holding frame is constructed by joining a pair of frame members. There is no leakage, ensuring clean exhaust air.

Further, since the number of separators 44 is made different between the upstream side and the downstream side of the filter member 42, the assembly worker can clearly recognize the distinction between the upstream side and the downstream side of the filter member 42 with respect to the air path. Therefore, the exhaust filter 41 can be incorporated into the cleaner main body 11 so as to reliably reduce pressure loss. Unlike a structure in which the upstream side and the downstream side are distinguished by marking with ink or the like, quality deterioration such as bleeding or damage to the filter member 42 does not occur.

〔Effect of the invention〕

According to the present invention, the following effects can be achieved.

In the vacuum cleaner according to claim 1, the holding frame for holding the filter member of the exhaust filter has a presser portion on one end face that comes into contact with the negative end face of the filter member, and a large opening through which the filter member can pass. It is a cylindrical integrally molded product that faces the other end, and a sealing material is provided between the holding frame and the peripheral edge of the filter member fitted into the holding frame on the large opening side, making it easy to assemble the exhaust filter. It is possible to easily maintain the airtightness between the filter member and the holding frame, and also to prevent the filter member from being damaged during assembly. Air does not leak from the engaging portion of the frame member as in the case, and the quality of the exhaust filter can be stabilized, the cost can be reduced, and clean exhaust air can be reliably produced.

In addition, in the electric cleaning method according to claim 2, the number of separators for maintaining the pleated shape of the filter member is made different on the upstream side and the downstream side, so that the filter member can be cleaned without deteriorating the quality of the filter member. It is possible to clearly distinguish between the upstream side and the downstream side.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an embodiment of the electric cleaning method of the present invention,
Figure 2 is an exploded perspective view of the same exhaust filter as above, Figure 3 is a perspective view of the live filter as above in an assembled state, Figure 4 is a sectional view taken along line IV-IV in Figure 3 as above, and Figure 5 is a front view of the exhaust filter as above. 6 is a side view of the exhaust filter, FIG. 7 is a rear view of the exhaust filter, and FIG. 8 is an enlarged perspective view of a portion of the filter member. 11. Vacuum cleaner body, 12. Electric feeder J+a machine, 13.
・Electric blower storage section, 14...Dust collection filter, 15...
Dust collection section, 18...Suction port, 25...Sub dust collection filter,
33...Exhaust filter mounting part, 41...Exhaust filter,
42... Filter member, 43... Holding frame, 44... Separator, 45... Large opening, 4... Holding part, 60... Exhaust part. Junjikai”

Claims (2)

[Claims] (1) an electric blower storage section containing a built-in electric blower; a dust collection section provided with a dust collection filter that is formed on the negative pressure side of the electric blower storage section and that collects dust sucked in from the suction port; a vacuum cleaner main body having an exhaust filter mounting part that is located between the exhaust side of the electric blower storage part and the exhaust part communicating with the outside and removably mounts an exhaust filter that collects fine dust; The exhaust filter includes a filter member folded into pleats, a separator provided on the upstream and downstream sides of at least both side edges of the filter member in the direction in which the pleats extend, and which maintains the pitch of the pleats, and a periphery of the filter member. and a holding frame airtightly provided in the filter member, the holding frame having an integrally molded cylindrical shape and having a presser portion on one end surface that comes into contact with one end surface of the filter member,
A large opening large enough to allow the filter member to pass through is provided on the other end surface, and on the side of the large opening, there is a gap between the holding frame and the peripheral edge of the filter member fitted in the holding frame. A vacuum cleaner characterized by being provided with a sealing material that maintains airtightness over the circumference. (2) The vacuum cleaner according to claim 1, wherein the number of separators is different between the upstream side and the downstream side of the filter member.