CN1266665A

CN1266665A - Electric vacuum cleaner

Info

Publication number: CN1266665A
Application number: CN00104137A
Authority: CN
Inventors: 中井康一; 小林利造; 小寺定基; 森好弘; 藤吉俊行; 西山高裕
Original assignee: Sanyo Electric Co Ltd
Current assignee: Sanyo Electric Co Ltd
Priority date: 1999-03-15
Filing date: 2000-03-15
Publication date: 2000-09-20
Anticipated expiration: 2020-03-15
Also published as: KR20010014546A; CN1166340C; JP2000262437A; KR100369409B1; TW418079B

Abstract

This invention is to achieve a light-weighted and slim-sized arrangement of the pipe through which an air suction flow passage and the air discharge flow passage passes in an electric vacuum cleaner of exhaust circumfluently flowing type. A pipe 3 comprises an inner cylindrical portion 3a to form an air suction flow passage A of substantially circular cross section, and an outer cylindrical portion 3b to form an air discharge flow passage B in which a part thereof is integrated formed with the inner cylindrical portion 3a and covers the inner cylindrical portion 3a. The air discharge flow passage B of the pipe 3 is of substantially crescent cross section, and the outer cylindrical portion 3b of the pipe 3 is of substantially circular cross section.

Description

Electric dust collector

The present invention relates to electric dust collector, particularly relate to the electric dust collector of exhaust gas recirculation (circulation) formula, the exhaust that is contained in the electric blowing machine in the main body of dust collector is back to ground with in the inhalator etc. through flexible pipe and pipe.

In general ground mobile model dust catcher, the exhaust that is contained in the electric blowing machine in the main body of dust collector all is expelled to the outside from the exhaust outlet that main body rear side etc. is provided with.

That is, the dust that is attracted together with air with inhalator by ground is through flexible pipe and pipe and be inhaled in the main body of dust collector, after the air of having been removed dust by paper bag etc. cools off the motor of electric blowing machine, be expelled to the outside by exhaust outlet, but owing to all be discharged from from the exhaust of electric blowing machine, so outwards blow out strong.Therefore, exist this exhaust wind stagnant dust on ground or carpet is flown upward, and diffuse to problem within doors.

In order to reduce this exhaust wind and the raising dust collecting effect that blows out to the outside, in the past, for example as the real public clear 39-36553 communique of Japan and spy open flat 9-135795 communique and disclose, a kind of electronic suction musical instruments used in a Buddhist or Taoist mass is proposed, on the flexible pipe, pipe and the inhalator that are connected on the main body of dust collector, form air-breathing stream and make the exhaust flow path of part or all backflow of the exhaust of electric blowing machine.

Above-mentioned electric dust collector is with the duplex of pipe with flexible pipe formation concentric circles, inboard air-breathing stream, the outside formation exhaust flow path of forming.

Yet in this exhaust gas recirculation formula electric dust collector, pipe will become the duplex of concentric circles, and must need the clearance part that makes inside and outside pipe be held in concentric circles etc., weight and thickness are all excessive, and the operating characteristics variation is so exist the problem that is difficult to practicability.

In addition, also can consider with flat spaced walls to form air-breathing stream and exhaust flow path, but the section of air-breathing stream is roughly semicircle, so compare with common circular cross section, is easily stopped up by dust with being divided into two parts in the general air-breathing special pipes.

Again, in the formation of above-mentioned prior art, exhaust is the outside passages by duplex, by the exhaust that electric blowing machine is discharged motor is cooled off the back and heating, if during the outside exhaust flow path of this exhaust by the duplex pipe, the hull-skin temperature of pipe rises, thereby has problems aspect usability.

Therefore, the objective of the invention is, a kind of exhaust gas recirculation formula electric dust collector is provided, the pipe light weight miniaturization that air-breathing stream and exhaust flow path passed through for head it off.

Another purpose is that the temperature that suppresses the outer tube surface that exhaust heat caused rises.

In order to achieve the above object, electric dust collector of the present invention is on flexible pipe, pipe and the inhalator that is equipped with in being connected on the main body of dust collector of electric blowing machine, the exhaust flow path that forms air-breathing stream and make the exhaust gas recirculation of electric blowing machine, it is characterized in that: above-mentioned pipeline comprises inboard cylindrical portion, and it forms the rounded substantially air-breathing stream of section; And outside cylindrical portion, the part of this outside cylindrical portion and above-mentioned inboard cylindrical portion form one, and cover inboard cylindrical portion, and form exhaust flow path.

Another feature is: the section of the exhaust flow path of above-mentioned pipe is roughly crescent, and the section of the outside cylindrical portion of above-mentioned pipe is roughly circle.

Another being characterised in that: with above-mentioned pipe separate for the thickness of the spaced walls of air-breathing stream and exhaust flow path part thinner than the outer wall section.

Also have one to be characterised in that: will separate the air-breathing stream of handle portion suction inlet of the suction oral-lateral of above-mentioned pipe and flexible pipe and the partition wall portion of exhaust flow path, towards the set distance of sunken inside.

Being simply described as follows of accompanying drawing:

Fig. 1 is the unitary construction figure that represents the present invention is used for the embodiment of general ground mobile model dust catcher, and the mid portion of flexible pipe omits in order to illustrate convenient;

Fig. 2 A, Fig. 2 B, Fig. 2 C, Fig. 2 D, Fig. 2 E, Fig. 2 F are the structural maps of the tube connector of the foregoing description, wherein Fig. 2 A is its profilograph, Fig. 2 B is the A-A profile of Fig. 2 A, Fig. 2 C is a side view, Fig. 2 D is the distolateral end view drawing of one of Fig. 2 C, Fig. 2 E is its another distolateral end view drawing, and Fig. 2 F is the B-B profile of Fig. 2 C;

Fig. 3 is the main body of dust collector of above-mentioned Fig. 1 and the amplification profile of hose transition;

Fig. 4 A, Fig. 4 B are the structural maps of the tube connector of above-mentioned hose transition, and the side view of Fig. 4 A for representing with broken section wherein, Fig. 4 B are the end view drawing of the end that connects of flexible pipe;

Fig. 5 is the amplification profile of the hose grip portion of above-mentioned Fig. 1;

Fig. 6 A, Fig. 6 B are the structural maps of the tube connector of above-mentioned handle portion, and wherein Fig. 6 A is a side view, and Fig. 6 B is a distolateral end view drawing that is connected with flexible pipe;

Fig. 7 is the key diagram of the defective when eliminating with the cleaning of the pipe front end in the foregoing description;

Fig. 8 A, Fig. 8 B are the structural maps of tube connector of another embodiment of expression the present invention, and wherein Fig. 8 A is a profilograph, and Fig. 8 B is its A-A profile.

Below, describe one embodiment of the invention in detail referring to figs. 1 through Fig. 7.

As shown in Figure 1, used ground of the present invention mobile model dust catcher to comprise main body of dust collector 1, flexible pipe 2, tube connector 3 and ground inhalator 4 etc.

In main body of dust collector 1, the dust storage chamber 9 of motor room 6 and use paper bag 7 and micronic filter 8 is housed, the electric blowing machine 5 that attracts usefulness is housed in the above-mentioned motor room 6.

Rear side at main body of dust collector 1 is formed with exhaust outlet 11, and this exhaust outlet 11 will be expelled to the outside from a part of exhaust of electric blowing machine 5 by discharge filter 10.

Again, the part of main body of dust collector 1, flexible pipe 2, tube connector 3 and ground are to constitute like this with inhalator 4, and promptly stream is a duplex, is divided into air-breathing stream A and exhaust flow path B, is communicated with between the each several part.

Promptly, in the dust storage chamber 9 of main body of dust collector 1, the lower side of motor room 6, be formed with the exhaust flow path B that is used to make from a part of exhaust gas recirculation of electric blowing machine 5, the exhaust flow path B that exhaust flow path B and flexible pipe on being installed in main body of dust collector 1 insert the hose transition 20 on mouthfuls 12 is communicated with.

Above-mentioned hose transition 20 is to constitute like this, be that

tube connector

20a, 20b are the duplex of concentric circles, the inboard tube connector 20a two ends that form air-breathing stream A are outstanding, the one end inserts in the installation portion 7a of paper bag 7, and is communicated with the exhaust flow path B of aforementioned body 1 one sides by the formed exhaust flow path B of outside tube connector 20b.

Distolateral at another of above-mentioned

tube connector

20a, 20b, an end of the flexible pipe 2 of duplex is installed.Use and the identical flexible hose 2a of use in washing machine scupper hose that is called as conduit flexible pipe (conduit hose) inboard of this flexible pipe 2, the flexible hose 2b that the outside uses general electric dust collector to use, this flexible pipe is called as one deck two-wire flexible pipe, in the winding wire 21 that is used for conduction (holding wire etc.) and keeps shape is housed.Conduit flexible pipe 2a is unlike one deck two-wire flexible pipe 2b, and inside does not have wiring astragal 21, so its advantage is in light weight, even also stepped on not by mistake can be as one deck two-wire flexible pipe 2b residual deformation, but can restore.

Above-mentioned flexible pipe 2, the conduit flexible pipe 2a of inboard is installed on the jag of tube connector 20a of connecting portion 20 inboards and engage go up after, shown in Fig. 4 A, Fig. 4 B, it is interior and install and fix that one deck two-wire flexible pipe 2b in the outside is screwed in rib 22 on the spiral tube connector 20b outer surface that is formed on the outside.The installation portion of this flexible pipe 2 covers with tubular over cap 23.

The other end of above-mentioned flexible pipe 2 equally installs and fixes on the handle portion 24 of operating usefulness on hand with above-mentioned by tube connector 24a, 24b.Promptly, the conduit flexible pipe 2a of inboard is installed on the jag of inboard tube connector 24a and after connecting, one deck two-wire flexible pipe 2b in the outside is screwed into being formed on spirally in the rib 25 on the tube connector 24b outer surface of the outside and installing and fixing shown in Fig. 6 A, Fig. 6 B.The installation portion of this flexible pipe 2 also covers with tubular over cap 26.

Above-mentioned handle portion 24 is to constitute like this, is about to be equipped with the air-breathing stream A at suction inlet 27 places of connecting piece 3 and partition wall portion 28 that exhaust flow path B separates towards the set distance of sunken inside.The top of this suction inlet 27 is provided with the clamping part 29 in order to install and fix tube connector 3.

Interior outer connecting pipe 20a, the 20b of above-mentioned hose transition 20 and interior outer connecting pipe 24a, the 24b of handle portion 24 are partly coupled together by not shown rib etc., form the duplex of concentric circles.

Shown in Fig. 2 A, Fig. 2 B, Fig. 2 C, Fig. 2 D, Fig. 2 E, Fig. 2 F, tube connector the 3, the 3rd is made of inboard cylindrical portion 3a that forms the substantially rounded air-breathing stream A of section and the outside cylindrical portion 3b that forms exhaust flow path B, the top of this outside cylindrical portion 3b and this inboard cylindrical portion 3a form one, and cover this inboard cylindrical portion 3a.

Exhaust by above-mentioned exhaust flow path B, after the paper bag 7 of main body of dust collector 1 and micronic filter 8 is exactly the pure air of having removed dust, so it is unnecessary as inboard cylindrical portion 3a, the rounded section of cardinal principle that dust stops up has been considered in formation, be conceived to this point, in the present embodiment the section of above-mentioned exhaust flow path B is made half moon-shaped, with the section of outside cylindrical portion 3b make be roughly circular.

Like this, because of one is formed at top, volume in light weight is little, and inside and outside be circular cross section, so neither influence intensity and operate easily.Therefore, the tube connector 3 of present embodiment was compared with have only air-breathing pipe in the past, did not also have incongruous sense, can obtain the essentially identical dust catcher of shape and operating characteristics.

And as in the past, covering cable and the connection cap 32 with clamping components 31 is installed on the top of above-mentioned tube connector 3.

Again, on above-mentioned tube connector 3, connect a tube connector 3 again, or, make the partition wall portion (inner wall section of inboard cylindrical portion 3a) 34 that separates air-breathing stream A and exhaust flow path B towards the set distance of sunken inside connecting suction inlet 33 1 sides of ground with inhalator 4.

On the other hand, the diameter of the other end of above-mentioned tube connector 3 is slightly little, so that will be entrenched in the suction inlet 33 sides corresponding outside cylindrical portion 3b of the suction inlet 27 of above-mentioned handle portion 24 and tube connector 3 the interior week of

suction inlet

27,33 sides, and form the jut 35 that fastens with

clamping components

29,31 at an upper portion thereof, till above-mentioned outside cylindrical portion 3b is embedded in jut 35 always and clamping

components

29,31 engages, like this, the end of inboard cylindrical portion 3a just with opening ora terminalis 28a, the 34a fluid-tight engagement of the

partition wall portion

28,34 that forms towards

suction inlet

27,33 sides depression.

Ground is the duplex of concentric circles with junction block 4a, the 4b of inhalator 4, but with the telescoping part of above-mentioned tube connector 3 then with above-mentioned the same.

Again, electric dust collector with said structure in use, by the attraction of electric blowing machine 5, make the air that is mixed with the dust that ground sucked with inhalator 4, be sucked in the main body of dust collector 1 by the air-breathing stream A of tube connector 3, the air-breathing stream A of flexible pipe 2.In main body 1, the air of removing dust and 8 purifications of process micronic filter with paper bag 7 is attracted by

electric blowing machine

5, and 5a cools off to its motor.

A part of exhaust of electric blowing machine 5 is expelled to the outside from the exhaust outlet 11 of main body 1, other parts are passed through the exhaust flow path B of flexible pipe 2 and the exhaust flow path B of tube connector 3 by the exhaust flow path B of main body 1, be back to ground with in the inhalator 4, and be recycled to the air-breathing stream A of tube connector 3 together with the dust that flies upward because of this exhaust wind.

Yet, general ground with the mobile model dust catcher in, except using common ground clears away with inhalator 4, when clearing away a spot of dust, also available tube connector 3 front ends are cleared away or are cleared away with handle portion 24 front ends.

If clear away in a manner described with exhaust gas recirculation formula dust catcher, then have owing to blowing out of exhaust makes the dust that should suck and blown afloat the misgivings of coming on the contrary, but in the present embodiment, as above-mentioned, owing to the syndeton of tube connector 3 front ends (suction inlet 33) and handle portion 24 front ends (suction inlet 27) has been descended the time, so can not produce above-mentioned bad phenomenon.

Promptly, tube connector 3, handle portion 24 are also identical, if when tube connector 3 being described with Fig. 7, then the exhaust stream of being discharged by exhaust flow path B originally with electric blowing machine 5 air-breathing → part that becomes exhaust is refluxed, the inspiratory flow shown in the historical facts or anecdotes line arrow is strong than the stream of the exhaust shown in the dotted arrow.Therefore, exhaust is flowed shown in dotted arrow, between the distance L of pipe fitting portion, is drawn to air-breathing stream A side by the strong inspiratory flow introducing shown in the solid arrow.

So, the partition wall portion 334 of the air-breathing stream A between the chimeric necessary distance L of pipe and exhaust flow path B caves in by making originally, just can eliminate the dust that exhaust wind caused and be blown afloat phenomenon.Above-mentioned distance L is considered the chimeric and suction and discharge wind speed of pipe, is set at about 40mm.

As above-mentioned, in the exhaust gas recirculation formula electric dust collector of present embodiment, the tube connector 3 that air-breathing stream A and exhaust flow path B are passed through is realized the light weight miniaturization, and can eliminate the phenomenon that blows out with the cleaning of pipe 3 front ends and handle 24 front ends the time, so can bring into play the advantage of exhaust gas recirculation formula in actual use.

That is, reflux by a part that makes exhaust, and the exhaust wind that blows out to the outside is weakened, so the dust in the room flies upward in can suppressing effectively to clear away.

In addition, circulation air is repeatedly also arranged, therefore be expelled to outside exhaust wind itself and further purify by paper bag 7 and micronic filter 8 etc.The flow velocity of the exhaust wind that is blown out because of exhaust outlet 11 also reduces again, so improved the filter efficiency of discharge filter 10, makes the exhaust gas purification better effects if.This is consistent with in recent years cleaning purpose also.

Fig. 8 A, Fig. 8 B are depicted as the structural map of the tube connector 3 of another embodiment of the present invention, and same as the previously described embodiments or considerable part is put on same-sign, and other structures are same as the previously described embodiments.

In the present embodiment, make and be positioned at thickness cylindrical portion 3b inboard, the outside, partition wall portion 37 not too important on intensity, that air-breathing stream A and the exhaust flow path B of inboard cylindrical portion 3a separated, outside wall portions than outside cylindrical portion 3b is thin, as shown in the figure,, shown in solid line, be easy to the exhaust heat of exhaust flow path B is conducted to air-breathing stream A side by the double dot dash line attenuation.

Like this, promoted the heat exchange to air-breathing stream A from exhaust flow path B, the temperature that has suppressed outside cylindrical portion 3b outer surface rises, and temperature can not rise to the user and feel inconsistent degree, so improved serviceability.In addition, because therefore the reduced thickness of the partition wall portion 37 that air-breathing stream A and exhaust flow path B are separated, can prevent the intensity reduction as much as possible, and make the equipment lightweight.

As above-mentioned, according to the present invention, pipeline comprises: inboard cylindrical portion, this inboard cylindrical portion form the rounded substantially air-breathing stream of section; And outside cylindrical portion, its part and this inboard cylindrical portion form one and cover inboard cylindrical portion, and form exhaust flow path, therefore, the anxiety of free from dust obstruction can make air-breathing stream and pipe light weight miniaturization that exhaust flow path passed through, makes the easy practicability of exhaust gas recirculation formula electric dust collector.

Section because of the exhaust flow path of pipe is crescent substantially again, and the section of the outside cylindrical portion of pipe is rounded substantially, therefore, even compare with only air-breathing pipe in the past, does not also have difference and feels, and can obtain essentially identical shape and operating characteristics.

Also owing to make the thickness of the partition wall portion that the air-breathing stream of pipe and exhaust flow path separate thinner than outer wall section, thereby promoted by the heat exchange of exhaust flow path to air-breathing stream, the temperature that can suppress surface outside the cylindrical portion of the outside rises, therefore, temperature can not rise to the user and feel inconsistent degree, thereby has improved serviceability.In addition, owing to make the reduced thickness of the partition wall portion that separates air-breathing stream and exhaust flow path, reduce so can prevent intensity as much as possible, and make the equipment lightweight.

Moreover, owing to make the air-breathing stream of handle portion suction inlet of the suction oral-lateral of pipe and flexible pipe and partition wall portion that exhaust flow path separates towards the set distance of sunken inside, so when clearing away with the cleaning of pipe front end and with the handle portion front end, exhaust stream is introduced by inspiratory flow and the phenomenon that can not occur being blown, and unfavorable condition can not occur so clear away also with this form.

Claims

1. electric dust collector is equipped with on flexible pipe, pipe and the inhalator on the main body of dust collector of electric blowing machine being connected inside, and be formed with air-breathing stream and make exhaust flow path from the exhaust gas recirculation of electric blowing machine,

It is characterized in that:

Above-mentioned pipeline comprises: inboard cylindrical portion, this cylindrical portion form the rounded substantially air-breathing stream of section; And outside cylindrical portion, the part of this outside cylindrical portion and described inboard cylindrical portion form one, and cover inboard cylindrical portion and form exhaust flow path.

2. electric dust collector as claimed in claim 1 is characterized in that: the section of the exhaust flow path of above-mentioned pipe is crescent substantially, and the section of the outside cylindrical portion of above-mentioned pipe is rounded substantially.

3. electric dust collector as claimed in claim 1 or 2 is characterized in that: the air-breathing stream that separates above-mentioned pipe is thinner than the outside wall portions with the thickness of the partition wall portion of exhaust flow path.

4. as each described electric dust collector in the claim 1 to 3, it is characterized in that: will make the air-breathing stream of handle portion suction inlet of the suction oral-lateral of above-mentioned pipe and flexible pipe and partition wall portion that exhaust flow path separates towards the set distance of sunken inside.