CN1166336C

CN1166336C - Electric vacuum cleaner

Info

Publication number: CN1166336C
Application number: CNB001210653A
Authority: CN
Inventors: 福岛定男; 一; 田中孝; 启; 萩野真一; 米山显启
Original assignee: Sanyo Electric Co Ltd
Current assignee: Sanyo Electric Co Ltd
Priority date: 1999-07-23
Filing date: 2000-07-18
Publication date: 2004-09-15
Anticipated expiration: 2020-07-18
Also published as: KR20010049808A; KR100346499B1; CN1281679A; JP2001029274A

Abstract

An electric vacuum cleaner is provided to suppress the temperature rise of circulating air in such way that the exhaust from an electric fan built in the cleaner body is circulated into a suction means through a hose or a pipe. This vacuum cleaner is provided with a partition wall 7 to be mounted on the lower case 3 which is constituted of the cleaner main body 1, and the partition wall 7 formed of a material with comparatively high heat conductivity is mounted at a distance from the backside of the lower case 3. The space between the partition wall 7 and the lower case 3 is made to form a circulating route which a part of exhaust of the electric fan 14 is circulated into.

Description

Electric dust collector

Technical field

The present invention relates to a kind of electric dust collector, relate in particular to and to be back to exhaust gas recirculation (circulation) formula electric dust collector in inhalator etc. from the exhaust that is contained in electric blowing machine in the body of dust collector by flexible pipe and conduit.

Background technology

In general floor mobile model electric dust collector, from being contained in the exhaust of electric blowing machine in the body of dust collector is from being formed on exhaust outlet row on the body back side etc. to the outside, owing to all get rid of from exhaust outlet from the exhaust of electric blowing machine, can blow out to the outside with sizable wind, the dust that therefore takes place will be deposited on floor or the carpet by this exhaust wind action blows the rough sledding that flies, spreads in the room.

Therefore, in order to reduce the exhaust wind of discharging from exhaust outlet, improve pick-up performance, for example as disclosed, proposed in flexible pipe, conduit and the inhalator of connection body of dust collector and air-breathing stream forms the scheme that makes from the electric dust collector of the exhaust flow path of the exhaust gas recirculation of electric blowing machine together at real public clear 39-36553 communique and the flat 9-135795 communique of Te Kai etc.

But, be back to exhaust the inhalator from electric blowing machine, temperature rises by electric blowing machine the time, continue this air that refluxes, the temperature of the air that is refluxed rises gradually, according to service condition, can reach sometimes more than 70 degree, the durability that exists component parts, particularly flexible pipe causes dysgenic problem.

Summary of the invention

The object of the present invention is to provide exhaust that a kind of electric blowing machine in being contained in body of dust collector comes out to be back to the inhalator etc., can to reduce the electric dust collector that the temperature of the air that is refluxed rises through flexible pipe and conduit.

Electric dust collector of the present invention comprises: in the body of dust collector of electric blowing machine is housed, be connected the flexible hose on this body of dust collector, the connecting duct that connects this flexible pipe, the inhalator that connects this connecting duct, the backflow road that the exhaust of above-mentioned electric blowing machine is refluxed in inhalator, it is characterized in that on body of dust collector, being formed with the connector that connects flexible pipe, remove the dust storage chamber of the dust that attracts from the connector that is communicated with this connector etc., the electric blowing machine chamber of the air of dust etc. has been removed in attraction at this dust storage chamber, be accommodated in the backflow road that at least a portion of exhaust of the electric blowing machine of this electric blowing machine chamber refluxes, the next door of distinguishing above-mentioned backflow road and body of dust collector outside is made of the high material of pyroconductivity.

In addition, electric dust collector of the present invention comprises: in be contained in the body of dust collector of electric blowing machine, be connected the flexible hose on this body of dust collector, the connecting duct that connects this flexible pipe, the inhalator that connects this connecting duct, the backflow road that the exhaust of above-mentioned electric blowing machine is refluxed in inhalator, it is characterized in that forming by upper shell and lower house at above-mentioned body of dust collector, be equipped with and forming dust storage chamber and electric blowing machine chamber by the space region branch that upper shell and lower house enclosed, the next door that the interval is arranged and formed by the high material of pyroconductivity between simultaneously inside the housing of above-mentioned lower house up and down is with the backflow road of the space between next door and the lower house as the part of the exhaust of backflow electric blowing machine.

Also have, preferred next door is to be 2.8 * 10 by pyroconductivity ^-4The above material of cal/cmsdeg forms.

Also have, preferred next door is to be formed by the material that synthetic resin constitutes.

Also have, preferred next door is to be formed by metal material.

Description of drawings

Fig. 1 is the cutaway view of the body of dust collector of the expression explanation embodiment of the invention.

Fig. 2 is the upward view of the same body of dust collector of expression.

Fig. 3 is the cutaway view of the same base side hose transition of expression and the amplification of flexible pipe connection status.

Fig. 4 is the side view of expression with the flexible pipe of a part after disrumpent feelings.

Fig. 5 is the cutaway view of the same shank part of expression.

Fig. 6 is the longitudinal sectional view of the same connecting duct of expression.

Fig. 7 is the transverse sectional view of the same connecting duct of expression.

Fig. 8 is the whole side view cutaway drawing that constitutes of the same electric dust collector of expression.

In above-mentioned accompanying drawing, 1-body of dust collector, 7-next door, 14-electric blowing machine, 21-flexible pipe, 22-outside flexible pipe, the inboard flexible pipe of 23-, 32-connecting duct, 33-inhalator, the air-breathing stream of A2～A6-, B2～B6-exhaust flow path.

The specific embodiment

Embodiment

Below describe embodiments of the invention with reference to the accompanying drawings in detail.

1 expression body of dust collector, constituted by upper shell 2, lower house 3, dust collection cover 4, the next door described later 7 that is contained on the lower house 3 as shown in Figure 1, be formed with the flexible pipe connector 5 of connection base side hose transition 17 described later at the front side of body of dust collector 1, on trailing wheel 6, be formed with unillustrated exhaust outlet among the figure.In above-mentioned lower house 3, the spaced next door 7 that is formed by the higher material of thermal conductivity ratio between lower house 3 the insides is housed, next door 7 constitutes the part of the outer wall of body of dust collector 1, is formed with the exhaust flow path B1 that is communicated with flexible pipe connector 5 between lower house 3 the insides and next door 7.

Also have, in the present embodiment, next door 7 is formed by polypropylene.Polyacrylic pyroconductivity is 2.8 (10 ^-4Cal/cmsdeg), the applicant shows through the result of various repeated experiments, as long as more than polyacrylic pyroconductivity, in flexible pipe 21 described later, the temperature of the air of base side hose transition 17 sides by outside flexible pipe 22 rises and can be suppressed in 20 degree.Therefore, even in summer, the surface temperature of the outside flexible pipe 22 of base side hose transition 17 sides can be suppressed in 50 degree of user's sensible heat, alleviates user's unplessantness displeasure.

8 expressions are the upright upward differentiation wall of establishing from above-mentioned lower house 3 bottom surfaces, and body of dust collector 1 inner front and back are distinguished.The dust storage chamber that 9 front sides that are illustrated in above-mentioned differentiation wall 8 form, side and above-mentioned flexible pipe connector 5 insert a mouthful 9a to be formed with flexible pipe on the concentric circles forwardly.Can take in the fixedly dust bag of dust bag 10 case 11 of packing into of free loading and unloading in this dust storage chamber 9, the opening of dust bag 10 inserts a mouthful 9a facing to the flexible pipe of above-mentioned dust storage chamber 9 under the state of loading onto with freely loading and unloading.

12 expressions are installed in the micronic filter on the above-mentioned differentiation wall 8, remove fine dust at the rear side place that is positioned at above-mentioned dust bag 10.

13 expressions are formed on the electric blowing machine reception room of above-mentioned differentiation wall 8 rear sides, accommodate electric blowing machine 14 in inside and are centered on by motor cover 15.Above-mentioned electric blowing machine 14 forms air outlet 14b on fan guard 14a, discharge a part of exhaust from air outlet 14b, and Sheng Xia exhaust is simultaneously discharged behind the 14c of cool motors portion by motor part 14c inside.

The lower side of above-mentioned motor cover 15 is formed with opening 13a, the 13b that is communicated with electric blowing machine receiving room and above-mentioned exhaust flow path B1 and outside exhaust flow path C.16 expressions are arranged on the filter at above-mentioned opening 13b place.The exhaust of coming out from air outlet 14b by the driving of electric blowing machine 14, import to flexible pipe connector 5 sides from above-mentioned opening 13a by above-mentioned exhaust flow path B1, simultaneously through the exhaust after the motor part 14c of electric blowing machine 14 from above-mentioned opening 13a through being arranged on unillustrated discharge filter the figure on outside exhaust flow path C and the exhaust outlet is discharged to body of dust collector 1 from exhaust outlet 6 outside.

17 expression connections flexible pipe 21 described later is contained in the base side hose transition on the flexible pipe connector 5, as shown in Figure 3, is made of columnar outer conduit 18, inner conduit 19, and the protected cover of part that connects flexible pipe 21 covers.

On above-mentioned outer conduit 18, be formed with and make the distolateral outside rib 18b that becomes screw-like of one in coiling direction inclined with outside flexible pipe 22.In addition, above-mentioned outer conduit 18 be contained on the body of dust collector 1 another distolateral on, be formed with the sealed pawl 18a that on flexible pipe connector 5, forms, this sealed pawl 18a is by tightening up plate 18b anti-avulsion.

Above-mentioned inner conduit 19 and outer conduit 18 form respectively, are formed with in the coiling direction inclined with inboard flexible pipe 23 to make the distolateral outside rib 19b that becomes screw-like of one.Another of the connection flexible pipe connector 5 of above-mentioned inner conduit 19 be distolateral to constitute that to insert mouthful 9a from flexible pipe projecting inward and longer than outer conduit 18 to dust storage chamber 9.In addition, on the periphery of above-mentioned inner conduit 19, be formed with a plurality of supporting rib 19a that join in interior week with outer conduit 18, be formed with the fixing fixed part 19b of outer conduit 18 and inner conduit 19 simultaneously with screw 18c.

Above-mentioned base side hose transition 17 is by being locked together in above-mentioned sealed pawl 18a on the flexible pipe connector 5 of above-mentioned body of dust collector 1, the inner conduit 19 of above-mentioned base side hose transition 17 is projecting inward to above-mentioned dust storage chamber 9, be communicated with dust storage chamber 9, inner conduit 19 becomes air-breathing stream A2.In addition, the exhaust flow path B1 in outer conduit 18 and the body of dust collector 1 is communicated with, and becomes exhaust flow path B2 between outer conduit 18 and the inner conduit 19.

21 represent base side hose transitions 17 and are contained in hose transition 27 flexible pipes described later, the duplex that is made of outside flexible pipe 22 and inboard flexible pipe 23 as shown in Figure 4.

Above-mentioned outside flexible pipe 22, the parts of the long chi shape that styrene series elastomer constitutes are wound into helical form, the joint portion 22a of the width end by the bonding long chi shape parts of the bonding agent that constitutes by polypropylene, form tubular, form spiral helicine raised line 22b, 22c respectively on the width central portion of this joint portion 22a and long chi shape parts.Then, pretend electric conductivity coil 22d, 22e among this raised line 22b, the 22c, improve the intensity of flexible pipe 21 by raised line 22b, 22c and coil 22d, 22e into holding wire.

Also have, this outside flexible pipe 22 is translucent, sees through outside flexible pipe 22 and can see inboard flexible pipe 23, improves design.Because outside flexible pipe 22 is translucent, can see coil 22d, 22e from the outside, might make the user feel uneasy, bonding agent adopts and add milky colouring agent in polypropylene, is difficult to see 22d, 22e from the outside of outside flexible pipe 22.

On the other hand, inboard flexible pipe 23, the parts of the long chi shape that styrene series elastomer constitutes are wound into helical form, the joint portion 23a of the width end by the bonding long chi shape parts of the bonding agent that constitutes by polypropylene, form ring-type, form spiral helicine raised line 23d, 23e respectively on the width central portion of this joint portion 23a and long chi shape parts.In addition, by add colouring agent in styrene series elastomer, above-mentioned inboard flexible pipe 23 becomes opaque.

Above-mentioned flexible pipe 21, the outside rib 18b of sealed outer conduit 18 on outside flexible pipe 22, outer conduit 18 screws in the flexible pipe 22 of the outside, the inboard rib 19b of while sealed inner conduit 19 on inboard flexible pipe 23, inboard flexible pipe 23 screws in the inner conduit 19.Then, fixedly tighten up the screw 22 precession fixed part 19b of plate 21, fixedly outer conduit 18 and inner conduit 19.

As mentioned above, because above-mentioned outer conduit 18 and inner conduit 19 constitute respectively, can be respectively to outside flexible pipe 22 and inboard flexible pipe 23 installation exercises, can improve operation, simultaneously when each

conduit

18,19 and

flexible pipe

22,23 operations, can prevent to meet with stresses, can improve the durability of flexible pipe by precession

flexible pipe

22,23.

Be communicated with the air-breathing stream A2 of base side hose transition 17 in the above-mentioned inboard flexible pipe 23, become air-breathing stream A3, on the other hand, be communicated with the exhaust flow path B2 of base side hose transition 17 between outside flexible pipe 22 and the inboard flexible pipe 23, become exhaust flow path B3.

Also have, because the coiling direction of inboard flexible pipe 23 and the coiling direction of outside flexible pipe 22 are equidirectional, the direction of the easy bending of inboard flexible pipe 23 and outside flexible pipe 22 and the direction of twisting easily are equidirectional.Therefore, in body of dust collector 1 used, flexible pipe 21 was turned round and is twisted or when crooked, and outside flexible pipe 22 and inboard flexible pipe 23 are complied with mutually to turn round and twisted or crooked, the outside flexible pipe 22 and inboard flexible pipe 23 are turned round with respect to these respectively and are twisted or bending can the phase mutual impedance, guarantee the flexibility of flexible pipe 21.

24 expression shank parts, by the swan-neck 25 that connecting duct described later is installed, with these swan-neck 25 integrally formed shank, an end are contained on the above-mentioned swan-neck 25, the hose transition 27 that the other end is contained on the flexible pipe 21 constitutes.

Above-mentioned hose transition 27 constitute by columnar outer conduit 28 and with the dual structure that cylindrical inside conduit 29 that this outer conduit forms in addition constitutes, be provided with the side that protective cover 31 covers the flexible pipe 21 of packing into.

Above-mentioned outer conduit 28 one distolateral on, identical with the outside rib 18b of the outer conduit 18 of base side hose transition 17, be tiltedly installed with the outside rib 28a that is connected outside flexible pipe 22 in the direction identical with the coiling direction of outside flexible pipe 22.Also have, on week, be formed with definite protuberance 28b that gives the position of set a distance from the end in another of outer conduit 28 is distolateral.

Above-mentioned inner conduit 29, identical with the outside rib 19b of the inner conduit 19 of base side hose transition 17 at one end on the periphery of side, be tilted with the inboard rib 29a of the inboard flexible pipe 23 of precession in the direction identical with the coiling direction of inboard flexible pipe 23.In addition, on another distolateral periphery of above-mentioned inner conduit 29, be formed with the supporting rib 29b that joins in interior week in tube axial direction and outer conduit 28, this supporting rib 29b joins on the protuberance 28b and swan-neck 25 of outer conduit 28, determine the position of inner conduit 29, support inner conduit 29 simultaneously and freely rotate.

Above-mentioned hose transition 27 and above-mentioned base side hose transition 17 are assembled equally, constitute respectively by making outer conduit 28 and inner conduit 29, can improve the operation of assembling.And, because outer conduit 28 and inner conduit 29 constitute and can freely rotate, can eliminate stubbornly, prevent to twist the stress that produces the durability of raising flexible pipe 21 by the knob of flexible pipe with respect to turning round of the generationing such as aging and foozle of the inboard flexible pipe 23 of outside flexible pipe 22.

Also have, the length of outside flexible pipe 22 and inboard flexible pipe 23 is not simultaneously, and is stubborn by adjusting turning round of outer conduit 28 and inner conduit 29, can adjust the length of outside flexible pipe 22 and inboard flexible pipe 23.

Between above-mentioned outer conduit 28 and inner conduit 29 and the exhaust flow path B3 of flexible pipe 21 be communicated with, become exhaust flow path B4.Also have, the air-breathing stream A3 connection in the inner conduit 29 and in the flexible pipe 21 becomes air-breathing stream A4.

On above-mentioned swan-neck 25, form pack into the loading port 25a of connecting duct 32 of aftermentioned, the 25b of pressing plate portion is set on the top of loading port 25a.And, on above-mentioned bend 25 inside, be formed with the cylindrical portion of inserting with the end of loading port 25a connection, above-mentioned inner conduit 29 30, in the cylindrical portion 30 with the air-breathing stream A4 of inner conduit 29 as air-breathing stream A5, simultaneously between the periphery of the outside of cylindrical portion 30 and shank part 24 and the exhaust flow path B4 that forms on inner conduit 29 and the outer conduit 28 be communicated with, become exhaust flow path B5.

32 expressions are locked together in pack into the connecting duct of loading port 25a of shank part 24 of the 25b of pressing plate portion, are connected to form by two conduit 32a.This connecting duct 32 is the circular outside cylindrical shape 32b of portion, is constituted with the integrally formed inside cylindrical shape 32c of portion of this outside cylindrical shape 32b of portion off-centre, top and the outside cylindrical shape 32b of portion by the cross section, and inside cylindrical shape 32c of portion and the outside cylindrical shape 32b of portion form meniscate space.Then, when this connecting duct 32 is packed shank part 24 into, the inside cylindrical shape 32c of portion is communicated with the air-breathing stream A5 of shank part 24 and forms air-breathing stream A6 in inside, is communicated with the exhaust flow path B5 of shank part 24 between outside cylindrical shape 32b of portion and the inside cylindrical shape 32c of portion simultaneously, becomes exhaust flow path B6.

Also have, exhaust by above-mentioned exhaust flow path B6, dust bag 10 and micronic filter 12 backs by body of dust collector 1 become clean air except that dust, there is no need to resemble and consider the assembly of dust the inside cylindrical shape 32c of portion and cross sectional shape is done circular, owing to notice this point, in the present embodiment as mentioned above, the cross section of above-mentioned exhaust flow path B6 makes crescent, makes the cross section of the outside cylindrical shape 32b of portion form circle.

33 expressions connect the inhalator of above-mentioned connecting duct 32, can take in rotary brush 33a freely to rotate, blow on the blade of rotary brush 33a by the exhaust that above-mentioned flexible pipe 21 and tube connector 32 reflux, and make rotary brush 33a rotation.

Like this, when using above-mentioned such electric dust collector that constitutes, because the attraction of electric dust collector 14, the air of having sneaked into the dust that sucks from inhalator 33 enters in the body of dust collector 1 by the air-breathing stream A5 of connecting duct 32, the air-breathing stream A3 of flexible pipe 21.In body of dust collector 1, remove dust by dust bag 10, be drawn into electric blowing machine 14 by the air after micronic filter 12 after-purifications, cool off this electric blowing machine 14.

Then, a part of exhaust of coming out from electric blowing machine 14 is discharged to the outside from the exhaust outlet of body of dust collector 1, other parts are by the exhaust flow path B1 of body of dust collector 1, distinguish the next door 7 of body of dust collector 1 outside and exhaust flow path B1, owing to be to form by the higher material of thermal conductivity ratio, heat by exhaust flow path B1 is emitted to the outside by next door 7, reduced the delivery temperature that refluxes, therefore, the state of affairs that can prevent to cause along with the process of service time the temperature of backflow vent to raise gradually takes place.Thereby the temperature that can suppress flexible pipe 21 or connecting duct 32 rises, and can alleviate user's unplessantness displeasure, improves the durability of flexible pipe 21 grades.

Reflux by a part that makes exhaust as mentioned above, can weaken the exhaust wind that blows out to the outside, the situation that dust flies upward in the house that can effectively prevent from clearing away.

Also have, in the present embodiment, though next door 7 is to be formed by polypropylene, (pyroconductivity is 5～18 (10 also can to adopt the higher synthetic resin material of pyroconductivity, polyvinyl chloride ^-4Cal/cmsdeg)), (pyroconductivity is 4.5～8.0 (10 for third rare nitrile, butadiene, styrene ^-4Cal/cmsdeg)).Also can adopt polystyrene, acetals homopolymers.

Because the high synthetic resin of pyroconductivity is adopted in next door 7, can remove the apparent uncomfortable feeling of upper shell 2 and lower house 3 etc., also has following effect simultaneously, even the temperature in next door 7 rises, because to compare pyroconductivity low with metal etc., even also be difficult to feel heat in the careless contact of user.

Also have, because the high situation of temperature of the air that formation refluxed on the performance of electric blowing machine and backflow road, when perhaps wanting to make the temperature of the air that is refluxed more to reduce, also can adopt metals such as aluminium and iron as next door 7.Next door 7 is owing to be arranged on the bottom surface of body of dust collector 1, and cleaning can not touch in using, even the pyroconductivity height also can not cause user's burn.

Generally, metal has the pyroconductivity more than 10 times of synthetic resin, by using metal, the more effectively air heat release to being refluxed.

In the present embodiment, though next door 7 as separating component, also can make next door 7 and lower house 3 integrally formed, the lower house 3 whole high materials of pyroconductivity that adopt.Even in this constitutes, can obtain the effect same with the foregoing description.In addition, in this formation, making separating component with distinguishing electric blowing machine chamber 13 with the wall of exhaust flow path B1 and the wall of differentiation dust storage chamber 9 and exhaust flow path B1, also is desirable.

According to the present invention, the heat of the air that is refluxed can be through the next door heat release, can reduce the temperature of flexible pipe etc., plays the effect that reduces the unplessantness displeasure of user when contacting flexible pipe etc. etc.

Claims

1. electric dust collector, on the body of dust collector of interior dress electric blowing machine, form connector, remove the dust storage chamber of the dust that attracts from the connector that is communicated with this connector, the electric blowing machine chamber of the air of dust has been removed in attraction at this dust storage chamber, comprise the flexible hose on the connector that is connected described body of dust collector simultaneously, the connecting duct that connects this flexible pipe, the inhalator that connects this connecting duct, the exhaust flow path that the exhaust that makes described electric blowing machine is flowed in flexible pipe, it is characterized in that being formed with the exhaust flow path that at least a portion of the exhaust of the electric blowing machine that is accommodated in described electric blowing machine chamber refluxes, the body of dust collector outer wall that constitutes a sidewall of described exhaust flow path is to be 2.8 * 10 by pyroconductivity ^-4The above material of cal/cmsdeg forms.

2. electric dust collector according to claim 1 is characterized in that described outer wall is to be formed by the material that synthetic resin constitutes.

3. electric dust collector according to claim 1 is characterized in that described outer wall is to be formed by metal material.