CN104421185A - Electric fan and electric dust collector therewith - Google Patents
Electric fan and electric dust collector therewith Download PDFInfo
- Publication number
- CN104421185A CN104421185A CN201410374153.2A CN201410374153A CN104421185A CN 104421185 A CN104421185 A CN 104421185A CN 201410374153 A CN201410374153 A CN 201410374153A CN 104421185 A CN104421185 A CN 104421185A
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- China
- Prior art keywords
- impeller
- blade
- shaped member
- ring
- electric fan
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000428 dust Substances 0.000 title claims abstract description 73
- 238000003466 welding Methods 0.000 claims description 31
- 238000002844 melting Methods 0.000 claims description 10
- 230000008018 melting Effects 0.000 claims description 10
- 238000009423 ventilation Methods 0.000 claims description 7
- 238000000638 solvent extraction Methods 0.000 abstract 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 229910052799 carbon Inorganic materials 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- 241001062472 Stokellia anisodon Species 0.000 description 4
- 241000278713 Theora Species 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 229920005992 thermoplastic resin Polymers 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 235000019994 cava Nutrition 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000039 congener Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
- B29C65/7802—Positioning the parts to be joined, e.g. aligning, indexing or centring
- B29C65/7805—Positioning the parts to be joined, e.g. aligning, indexing or centring the parts to be joined comprising positioning features
- B29C65/7814—Positioning the parts to be joined, e.g. aligning, indexing or centring the parts to be joined comprising positioning features in the form of inter-cooperating positioning features, e.g. tenons and mortises
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
- B29C66/124—Tongue and groove joints
- B29C66/1244—Tongue and groove joints characterised by the male part, i.e. the part comprising the tongue
- B29C66/12441—Tongue and groove joints characterised by the male part, i.e. the part comprising the tongue being a single wall
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/302—Particular design of joint configurations the area to be joined comprising melt initiators
- B29C66/3022—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined
- B29C66/30223—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined said melt initiators being rib-like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
- B29C66/832—Reciprocating joining or pressing tools
- B29C66/8322—Joining or pressing tools reciprocating along one axis
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/08—Blades for rotors, stators, fans, turbines or the like, e.g. screw propellers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- General Engineering & Computer Science (AREA)
- Electric Suction Cleaners (AREA)
Abstract
The invention provides an electric fan and an electric dust collector therewith, wherein the electric fan, compared with the prior art, can reliably improve the air supply efficiency. The electric fan (7) is characterized in that the electric fan (7) comprises a fan cover (43) covering an impeller and a fixed impeller (42) from the outside, and an annular part (48) disposed between the fixed impeller (42) and the fan cover (43); the fixed impeller (42) is provided with a roughly annular partitioning plate (42b) and a plurality of fixed impeller blades (42a), wherein the plurality of fixed impeller blades (42a) are formed by plate bodies which erect from the surface of the partitioning plate (42b) to a side of an annular part (48); the front ends of the fixed impeller blades (42a) form chamfering parts (42h); the annular part (48) is provided with a plurality of blade grooves (48a) which allow the end parts of the fixed impeller blades (42a) to be inserted; the end parts of the fixed impeller blades (42a) are jointed with the annular part (48) in the blade grooves (48a).
Description
Technical field
The present invention relates to electric fan and possess its electric dust collector.
Background technique
Generally speaking, the electric fan used in electric dust collector comprises: the impeller be connected with the running shaft of motor; Be fixedly installed on this impeller outer circumferential side determine impeller (Diffuser), they are incorporated in fan guard.
Impeller is the centrifugal type impeller utilizing centrifugal force, during High Rotation Speed from the sucting of regulation being formed at fan guard by air intake in fan guard.The air that is inhaled into forms the air stream that the outer circumferential side to impeller goes.
Determine impeller and surround the outer circumferential side of impeller, formed the air conductance sent from the impeller air flow path to peripheral direction.The air stream flow through in this air flow path is directed to motor.
Determine the air flow path of impeller, by demarcation strip and be vertically provided with multiple plate face of determining impeller blade (Diffuser vane) divide and formed on the inwall and demarcation strip of fan guard.And the ora terminalis determining the fan guard side of impeller blade erected from demarcation strip is the state simply abutted with the inwall of fan guard, does not link together.But consider the air-supply efficiency of electric fan, preferably determining impeller blade contacts joint airtightly with the inwall of fan guard.
In prior art, the known inwall at fan guard is formed with the groove corresponding with the shape of the ora terminalis determining impeller blade, is embedded in the electric fan (such as, referenced patent document 1) of the ora terminalis determining impeller blade at this groove.
Can think according to such electric fan, compared with the electric fan simply abutted with the ora terminalis determining impeller blade and the inwall of the smooth fan guard not having groove, the tightness of determining between impeller blade and fan guard improves.
Look-ahead technique document
Patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 6-193595 publication
Summary of the invention
The problem that invention will solve
But in existing electric fan (such as, referenced patent document 1), generally speaking, fan guard is the manufacturing press-molded products of sheet metal, so its thickness of slab is uneven sometimes, or deforms.In addition, because determining impeller is plastic article, so fan guard caves in, lacks material (Shortmold), distortion etc. sometimes.Thus in existing electric fan, determining to produce gap between impeller blade and fan guard, may can not maintain tightness in the groove of fan guard, air-supply efficiency reduces.
So problem of the present invention is that providing a kind of compared with prior art reliably can improve the electric fan of air-supply efficiency and possess its electric dust collector.
For solving the method for problem
In order to the feature of the electric fan of the present invention solving above-mentioned problem is, comprising: rotated by motoring and send the impeller of air stream; Receive the shell of above-mentioned motor; Determine impeller, it configures in the mode of the outer circumferential side surrounding above-mentioned impeller, the air stream sent is guided to the ventilation path in above-mentioned shell from above-mentioned impeller; To cover the fan guard that above-mentioned impeller and above-mentioned mode of determining impeller are arranged from outside; And ring-shaped member, it is formed as ring-type, is configured in above-mentionedly to determine between impeller and said fan cover, above-mentionedly determines impeller and has: the roughly circular demarcation strip configured in the mode that plate face is relative with above-mentioned ring-shaped member; With facing multiple that plate body that above-mentioned ring-shaped member side erects formed by the plate from above-mentioned demarcation strip and determine impeller blade, chamfered edge portion is formed in above-mentioned front end of determining impeller blade, multiple blade inserting groove that above-mentioned end of determining impeller blade is inserted is formed at above-mentioned ring-shaped member, above-mentioned end of determining impeller blade, engages with above-mentioned ring-shaped member in above-mentioned blade inserting groove.
In addition, the feature of electric dust collector of the present invention is, possesses above-mentioned electric fan.
Invention effect
According to the present invention, can provide a kind of and compared with prior art reliably can improve the electric fan of air-supply efficiency and possess its electric dust collector.
Accompanying drawing explanation
Fig. 1 is the stereogram of the structure of the electric dust collector representing mode of execution.
Fig. 2 is the synoptic diagram of the configuration structure representing the electric fan that the electric dust collector inside of mode of execution is arranged.
Fig. 3 is the stereogram of the structure of the electric fan representing mode of execution.
Fig. 4 is the longitudinal section of the internal structure of the electric fan representing mode of execution.
Fig. 5 (a) is the stereogram representing the structure of determining impeller, and (b) is the part B enlarged view of (a).
Fig. 6 (a) is the stereogram arranging structure representing the ring-shaped member used in mode of execution, and (b) is the stereogram of the structure of the lower surface representing ring-shaped member.
Fig. 7 is the part A enlarged view of the Fig. 4 representing the state after determining impeller blade welds with ring-shaped member.
Fig. 8 is the C magnified partial view of Fig. 7.
Reference numeral explanation
1 electric dust collector
2 main body of dust collector
7 electric fans
21 motor
22 blower fans
33 shells
40 impellers
42 determine impeller
42a determines impeller blade
42b demarcation strip
42c welds rib
42d end face
42e boss
42h chamfered edge portion
43 fan guards
47 air flow paths
48 ring-shaped members
48a blade inserting groove
48c positioning hole
R1 ventilation path
R2 ventilation path
Embodiment
Then, with reference to accompanying drawing, the electric dust collector for implementing mode of the present invention (hereinafter referred to as mode of execution) and electric fan are described.
Wherein, as long as electric dust collector of the present invention has the electric fan (symbol 7 in Fig. 2) hereinafter described in detail, then can be the electric dust collector of whirlwind (Cyclone) formula, also can be the electric dust collector of dirt pocket type.Below, illustrate that the electric dust collector of vortex type is as an example of the present invention.
The overall structure > > of < < electric dust collector
Fig. 1 is the stereogram of the structure of the electric dust collector representing mode of execution, and Fig. 2 is the synoptic diagram of the configuration structure representing the electric fan that the electric dust collector inside of mode of execution is arranged.
As shown in Figure 1, the electric dust collector 1 of present embodiment comprises main body of dust collector 2, flexible pipe 3, operation pipe 4, extension tube 5 and suction fitting 6.
Main body of dust collector 2 comprises the electric fan described later 7 (with reference to figure 2) producing suction and the dust collecting section 11 etc. that will the dust of the suction control of dust of this electric fan 7 utilized to receive.
One end of flexible pipe 3, is connected with the suction port 20 of main body of dust collector 2 to make to be communicated with the dust collecting section 11 of main body of dust collector 2.In addition, the other end of flexible pipe 3 is connected with one end of operation pipe 4.
Electric dust collector 1, by the hand-held interrupteur SW of operation operation pipe 4, can carry out the power switching etc. of the running of electric fan 7 (with reference to figure 2).
Extension tube 5, comprises outer tube and interior pipe, and an end of pipe in inserting in the other end of outer tube, can free-extension.Wherein, Fig. 1 represents the state that extension tube 5 is the shortest.
Suction fitting 6 comprises: the box 6a of the revolving brush (omit and illustrate) that such as storage contacts with the swept surface such as ground and rotatably linking with this box 6a and the connector portions 6b etc. be releasably connected with extension tube 5.
This electric dust collector 1, to be collected into dust collecting section 11 in main body of dust collector 2 by rubbish and dust etc. by utilizing the suction of the air-supply being arranged on aftermentioned electric fan 7 (with reference to figure 2) in main body of dust collector 2 through extension tube 5 and flexible pipe 3 from suction fitting 6.
As shown in Figure 2, main body of dust collector 2 has the electric fan room 12 of the electric fan 7 of above-mentioned dust collecting section 11 and built-in generation suction.Main body of dust collector 2, under the horizontal state of carrying out cleaning work, in front side configuration suction port 20 and dust collecting section 11, configures electric fan room 12 at rear side.
Dust collecting section 11 is vortex types, can use known technology, comprises dust separation unit 11a and dust container 11b.Dust separation unit 11a is lighter dust and heavier dust by centrifugal force separate.Dust container 11b possesses dust collecting box 11c, is to collect heavier dust.
In such dust collecting section 11, the lighter dust be separated with by dust separation unit 11a air is not together by dust container 11b but lead to filter F, collected by the dust collecting box 11c of dust container 11b by the heavier dust that dust separation unit 11a is separated, the air after collection is gone to filter F by dust collecting box 11c.Then, the fans entrance 17 of the electric fan 7 next illustrated is inhaled into by the air after filter F.Wherein, filter F such as can use highdensity HEPA filter (High Efficiency Particulate Air Filter).
The structure > > of < < electric fan
Fig. 3 is the stereogram of the structure of the electric fan representing mode of execution, and Fig. 4 is the longitudinal section of the internal structure of the electric fan representing mode of execution.
As shown in Figure 3, electric fan 7 has the external frame of the substantially cylindrical shape being provided with fan guard 43 and shell 33 integratedly, and in this external frame, possess motor 21 (with reference to figure 4) described later and blower fan 22 (with reference to figure 4).In Fig. 3, symbol 17 is fans entrances, and symbol 18 is fan outlets, and symbol 42 determines impeller, and symbol 42a determines impeller blade, and symbol 42b is demarcation strip, and symbol 48 is ring-shaped members, and symbol 49 is airtight member.
Wherein, herein, with electric fan 7 relative to main body of dust collector 2 (with reference to figure 2) configuration in the vertical direction (that is, with relative to main body of dust collector 2, fan guard 43 is configured in upside, motor 21 is configured in the state of downside) be described.Therefore, the configuration instruction of direction based on the above-below direction of this electric fan 7 of each constituting component of electric fan 7 is formed.But electric fan 7 such as also can configure in the longitudinal direction relative to main body of dust collector 2.In this case, the direction forming each constituting component of electric fan 7 is replaced based on the configuration of the fore-and-aft direction of electric fan 7.
The structure > of < motor
First, the structure of motor 21 is described in the constituting component of electric fan 7.
As shown in Figure 4, motor 21 is electric motors that the impeller 40 for making to be fixed on running shaft 26 rotates.This motor 21 comprises rotor 23, stator 24, commutator 25, running shaft 26 and bearing 27,28.In addition, motor 21 comprises carbon brush 29 described later, spring 30, brush pigtail (Pigtail) 31, shell 33, brushgear housing 34 and end frame (end bracket) 35 respectively.
Rotor 23 is the parts being also referred to as armature or rotor, is fixed on the middle body of running shaft 26.
Stator 24 reel on the stator iron core that periphery is square staor winding form, be fixed on the outside of the rotor 23 in shell 33.
Commutator 25 is arranged on the downside of rotor 23.
Running shaft 26 is provided with rotor 23, commutator 25 and impeller 40, rotates integratedly when motor 21 rotary actuation.
Bearing 27,28 by pivotally support forward son one end of running shaft 26 of upside of 23 and a pair parts of the other end of the downside of commutator 25 form.
Carbon brush 29 is configured in the outer circumferential side of commutator 25 in the mode sliding with commutator 25.
Spring 30 is configured in the outer circumferential side of carbon brush 29, is the forcing unit pressed to commutator 25 side by carbon brush 29.
Brush pigtail 31 is electrically connected with carbon brush 29.
Shell 33 is by receiving motor 21 and keeping the roughly cup-shaped metal housing of bearing 27 to form.The perisporium of this shell 33 is formed the fan outlet 18 as relief opening.From the air that above-mentioned fans entrance 17 sucks, discharge from this fan outlet 18.
At the peripheral portion of the opening of blower fan 22 side, be linked with the edge, periphery of end frame 35 and the open lower side portion of fan guard 43.
In the inner side of shell 33, within it between perisporium and stator 24, be formed with axial ventilation path R1.And then, between stator 24 and rotor 23, be also formed with axial ventilation path R2.In this ventilation path R2, pass through air flow path (determining impeller stream) 47, bending stream 43a and return stream 42g to flow through a part for the air come by the rear (flow direction downstream side) of lid 44 pilot flow direction shell 33 from fans entrance 17.
Brushgear housing 34 is kept by carbon brush 29 and is fixed on the parts of shell 33, is arranged on the periphery of shell 33.
End frame 35 is the metal parts for keeping bearing 28, has the concave shaped portion being accommodated in the bearing 28 that central part makes running shaft 26 insert and the lid 44 being embedded in running shaft 26 outward.End frame 35, in the housing be made up of shell 33 and fan guard 43, is arranged to this housing is divided into motor 21 side and blower fan 22 side.
The structure > of < blower fan
Then, the structure of blower fan 22 is described in the constituting component of electric fan 7.
As shown in Figure 4, blower fan 22 comprises: directly link and the impeller 40 rotated with the running shaft 26 of motor 21; What be fixedly installed on the outer circumferential side of this impeller 40 determines impeller 42; That determines impeller 42 with this determines the ring-shaped member 48 that impeller blade 42a engages; With cover impeller 40, determine impeller 42 and ring-shaped member 48 and form the fan guard 43 of fans entrance 17.
(impeller)
Impeller 40 is the centrifugal type impellers of the roughly ring-type utilizing centrifugal force, is configured to rotation when becoming high speed, and the pressure increase of the inner side of impeller 40 increases, and sucks air from fans entrance 17.The air be inhaled into becomes air stream at a high speed by impeller 40 at outer circumferential side and sends to determining impeller 42 side.Impeller 40 nut 41 is arranged on the upper end of running shaft 26, rotates integratedly with running shaft 26.
(determining impeller)
Determining impeller 42 is form the air flow path 47 that kinetic energy that the air that the rotation because of impeller 40 flowed has is converted to pressure energy, and forms the parts that this air is delivered to the stream (bending stream 43a and return stream 42g) of motor 21 side by the inwall utilizing this to determine impeller 42 and to be configured in the fan guard 43 around it.
To determine impeller 42 are roughly circular demarcation strip 42b and determine by vertically arranging on the plate face of this demarcation strip 42b of being formed of elongated plate body on the direction in the plate face along this demarcation strip 42b the structure that impeller blade 42a is integrally formed.This is determined impeller blade 42a and is described in detail later.
In addition, about determining impeller 42, clip demarcation strip 42b with determine that impeller blade 42a relatively configures multiplely return blade 42f and demarcation strip 42b forms.
That is, the impeller 42 of determining in present embodiment determines impeller blade 42a, demarcation strip 42b and the plastic article returning blade 42f and become to be integrated.Being preferably formed the resin determining impeller 42 is thermoplastic resin, particularly preferably as the syndiotactic polytyrene (SPS) of the polystyrene of crystallization.
(determining impeller blade)
Fig. 5 (a) is the stereogram representing the structure of determining impeller, and Fig. 5 (b) is the part B enlarged view of Fig. 5 (a).In addition, Fig. 5 (a) and (b) represent the stereogram and the part B enlarged view that carry out the state before ultrasonic welding with ring-shaped member 48 (with reference to figure 6 (b)) described later.
As shown in Fig. 5 (a), determine impeller blade 42a to be made up of the plate body of elongate rectangular bending slightly highlightedly outside the radial direction to demarcation strip 42b, vertically arrange on the plate face of demarcation strip 42b to arrange multiple modes along the outer periphery of demarcation strip 42b.
Further describe, mutually adjacently in the circumferential direction of demarcation strip 42b determine impeller blade 42a and be provided with the part that the interval that separates regulation in the circumferential direction of demarcation strip 42b overlaps each other, and be configured to relative misalignment in the circumferential direction of demarcation strip 42b.And, the bearing of trend (long side direction of elongate rectangular) being configured to the plate face of determining impeller blade 42a tilts relative to the tangent direction of demarcation strip 42b, mutually adjacently in the circumferential direction thus determine impeller blade 42a interval each other, more go wider outside the radial direction of demarcation strip 42b.
Namely, at the air flow path determining to be formed between impeller blade 42a (determining impeller stream) 47, be formed as inside the radial direction of the demarcation strip 42b of the upstream side becoming air stream towards become air stream downstream side demarcation strip 42b radial direction outside broaden gradually.
Like this determine impeller 42 by making sectional area expand gradually from the entrance of air flow path 47 to outlet, there is reduction air velocity, increase the function of pressure of air.
Be formed with boss (boss) 42e determining impeller blade 42a.This boss 42e is the parts of the positioning hole 48c (with reference to figure 6 (b)) being embedded into ring-shaped member 48 (with reference to figure 6 (b)) described later.Boss 42e is formed as shown in Fig. 5 (a) He (b), and the end face 42d (face relative with the plate face of demarcation strip 42b) determining impeller blade 42a erected from the plate face from demarcation strip 42b gives prominence to.The projecting height of this boss 42e is set as higher than the height of welding rib 42c described later.
Boss 42e in present embodiment, determines for one group mutually relative on the radial direction of demarcation strip 42b impeller blade 42a is arranged respectively.In addition, as long as boss 42e is arranged on multiple at least two of determining in impeller blade 42a, be just not particularly limited, also can impeller blade 42a be arranged determining more than three.
These boss 42e, as shown in Fig. 5 (b), is formed in central part than the air flow path 47 determining to be formed between impeller blade 42a closer to the position of outlet side, is particularly preferably arranged to adjacent with the outlet of air flow path 47.
In addition, as shown in Fig. 5 (a) He (b), determine on impeller blade 42a before engaging with ring-shaped member 48 described later, be formed with welding rib 42c and chamfered edge portion 42h.This welding rib 42c and chamfered edge portion 42h is all determining impeller blade 42a is arranged.
The end face 42d that welding rib 42c is formed as from determining impeller blade 42a gives prominence to.The entirety that welding rib 42c in present embodiment is arranged to the length direction throughout the long limit of determining impeller blade 42a extends.In addition, preferably this welding rib 42c is arranged on the substantial middle of the thickness direction determining impeller blade 42a, but described laterly determines welding of impeller blade 42a and ring-shaped member 48 as long as do not hinder, and arranges with also can being partial to the one party on thickness direction.
In addition, the sectional shape of welding rib 42c is not particularly limited, but preferred aftermentioned leg-of-mutton welding rib 42c (with reference to figure 8), trapezoidal welding rib 42c (omitting diagram), semicircular welding rib 42c (omitting diagram), half elliptic welding rib 42c (omit and illustrate).
Chamfered edge portion 42h in present embodiment carries out chamfered edge at the complete cycle edge of end face 42d to its bight to be processed to form.This chamfered edge portion 42h be as described later by ring-shaped member 48 and determine impeller blade 42a weld time, prevent the welding rib 42c of melting from overflowing from weld part and forming burr, carried out in the mode of the welding rib 42c avoiding melting the part that chamfered edge processes.
(ring-shaped member)
Fig. 6 (a) is the stereogram arranging structure representing the ring-shaped member used in mode of execution, and Fig. 6 (b) is the stereogram of the structure of the lower surface representing ring-shaped member.
As shown in Fig. 6 (a), ring-shaped member 48 is roughly circular parts as mentioned above, by engaging with the impeller blade 42a that determines determining impeller 42, as shown in Figure 3, being clipped in and determining between impeller 42 and fan guard 43.
And ring-shaped member 48, as mentioned above, is determined impeller blade 42a division formation air flow path 47 by multiple between demarcation strip 42b.In Fig. 6 (a), symbol 48c runs through and the positioning hole 48c of the positive and negative of through ring-shaped member 48 in the blade inserting groove 48a of following explanation.
As shown in Fig. 6 (b), in lower surface, namely relative with determining impeller blade 42a (with reference to figure 6 (a)) side of ring-shaped member 48, be formed with multiple blade inserting groove 48a.
This blade inserting groove 48a presents following shape: in the position corresponding with determining impeller blade 42a (with reference to figure 6 (a)), and the end of end face 42d (with reference to figure 5 (a)) side of impeller blade 42a is determined in storage.
In blade inserting groove 48a, be formed with the positioning hole 48c embedding and determine the boss 42e of impeller blade 42a.That is, positioning hole 48c is formed in central part than the air flow path 47 shown in Fig. 6 (a) closer to the position of outlet side.
The material of the ring-shaped member 48 in preferred present embodiment is thermoplastic resin, preferably with the above-mentioned congener thermoplastic resin of thermoplastic resin determined impeller and use.Herein, the distortion etc. that the heat produced to prevent motor causes, more preferably resin is the resin after carrying out fiber reinforcement, such as, be the resin of the glass fibre containing 15 ~ 40 quality % degree in as the resin of matrix.
< determines the joint > of impeller and ring-shaped member
As mentioned above, the end of determining end face 42d (with reference to figure 5 (a)) side of impeller blade 42a (with reference to figure 5 (a)) is inserted in blade inserting groove 48a (Fig. 6 (b)), and boss 42e (with reference to figure 5 (a)) is embedded in positioning hole 48c (Fig. 6 (b)).Thus, as shown in Fig. 6 (a), set ring-shaped member 48 for the welding position of determining impeller 42.
Then, by the soldering tip of ultrasonic welding machine (omitting diagram) by ring-shaped member 48 to make from ring-shaped member 48 side of Fig. 6 (a) to when determining impeller 42 side transmitting vibrations, the welding rib 42c melting because of frictional heat shown in Fig. 5 (a).
Fig. 7 is the part A enlarged view of the Fig. 4 representing the state after determining impeller blade welds with ring-shaped member, and Fig. 8 is the C magnified partial view of Fig. 7.
As shown in Figure 7, the end face 42d determining impeller blade 42a determining impeller 42 welds with ring-shaped member 48 in hardening by cooling afterwards because of the welding rib 42c (Fig. 5 (a)) of melting in blade inserting groove 48a.Wherein, in Fig. 7, symbol 42b is demarcation strip, and symbol 49 is the airtight member will sealed between fan guard 43 and ring-shaped member 48.
In addition, the welding rib 42c of melting, as shown in Figure 8, is determining to remain welding portion between impeller blade 42a and ring-shaped member 48, and the portion 42h that is chamfered of the remainder beyond this welding portion accepts, this chamfered edge portion of landfill 42h.
And, if the width of blade inserting groove 48a is a1, the degree of depth of blade inserting groove 48a is b1, the thickness determining impeller blade 42a is a2, when the length being formed at the short transverse of the chamfered edge portion 42h determining impeller blade 42a is b2, preferred a1, a2, b1 and b2 meet a1>a2 and the relation of b1>b2.
In addition, be (sectional area of blade inserting groove 48a)-(will impeller blade 42a be determined be inserted into the area of groove)+(sectional area of chamfered edge portion 42h) by the sectional area S in the gap of determining when impeller blade 42a is inserted into blade inserting groove 48a, so can represent with S=(a1 × b1)-(a2 × b1)+(a3 × b2).According to the present embodiment, the sectional area of welding rib 42c is less than above-mentioned S, has the relation of (sectional area of welding rib 42c) <S=(a1 × b1)-(a2 × b1)+(a3 × b2).Thus, blade inserting groove 48a can be contained in and determine in the gap between impeller blade 42a when welding rib 42c melting.
In addition, because the sectional area of blade inserting groove 48a and the random position of determine impeller blade 42a all sets up above-mentioned relation, thus the volume welding rib 42c when by volume considering also than blade inserting groove 48a and the volume determining to be formed between impeller blade 42a little.
In addition, the degree of depth b1 of blade 48a insertion groove is larger than the height b2 of the chamfered edge portion 42h arranged in the front end of determining impeller blade 42a, b1>b2, so determining after impeller 42 welds with ring-shaped member 48, the chamfered edge portion 42h being arranged on the front end of determining impeller blade 42a is positioned at blade inserting groove 48a, therefore chamfered edge portion 42h can not be positioned in primary flow path, can not cause harmful effect to the flowing of air.
Then, the electric fan 7 for present embodiment is described with the action effect of electric dust collector 1 realization possessing it.
Electric fan 7 according to the embodiment of the present invention and the electric dust collector 1 possessing it, the end of determining impeller blade 42a is welded in the blade inserting groove 48a of ring-shaped member 48, so determining between impeller blade 42a and ring-shaped member 48, different with the electric dust collector possessing it from existing electric fan, reliably can obtain tightness.Therefore, electric fan 7 according to the embodiment of the present invention and the electric dust collector 1 possessing it, can make air-supply efficiency during attraction compared with prior art improve more reliably.
In addition, electric fan 7 according to the embodiment of the present invention and the electric dust collector 1 possessing it, the end of determining impeller blade 42a engages with ring-shaped member 48, so can obtain determining the tightness between impeller blade 42a and ring-shaped member 48 by more reliable and simple operation by making welding rib 42c utilize the vibration meltings such as ultrasonic brazing unit.
In addition, electric fan 7 according to the embodiment of the present invention and the electric dust collector 1 possessing it, by making the boss 42e determining impeller blade 42a be embedded in the positioning hole 48c of ring-shaped member 48, can easily and promptly carry out determining the location of impeller blade 42a to ring-shaped member 48.
In addition, electric fan 7 according to the embodiment of the present invention and the electric dust collector 1 possessing it, there is in the end of determining impeller blade 42a chamfered edge portion 42h, so welding rib 42c melting because of vibration friction, thus by ring-shaped member 48 with determine impeller blade 42a weld time, the remaining smelt of spilling is contained in chamfered edge portion 42h.Therefore, it is possible to prevent the remaining smelt overflowed from forming burr.
Herein, because there is boss 42e, so imagination is just in case to be positioned at the melting of the welding rib 42c of the vicinity of this boss 42e insufficient, supposes ring-shaped member 48 and determine to define between impeller blade 42a the situation in gap.In this case, be arranged on the electric fan 7 in the downstream side of air flow path 47 according to boss 42e and positioning hole 48c and possess its electric dust collector 1, in the downstream side of air flow path 47, air stream becomes low speed, so reduce from the air quantity of this clearance leakage.Thereby, it is possible to suppress this gap to form the reduction of caused air-supply efficiency.
In addition, at the electric fan 7 of embodiments of the present invention with in possessing its electric dust collector 1, set the width of blade inserting groove 48a as a1, the degree of depth of blade inserting groove 48a is b1, the thickness determining impeller blade 42a is a2, when the length being formed at the short transverse of the chamfered edge portion 42h determining impeller blade 42a is b2, a1, a2, b1 and b2 meet a1>a2 and the relation of b1>b2.
According to this electric fan 7 and the electric dust collector 1 possessing it, chamfered edge portion 42 is contained in blade inserting groove 48a completely.Therefore, even if just in case above-mentioned smelt overflows from chamfered edge portion 42, form burr, these burr are also contained in blade inserting groove 48a mostly.That is, the flowing because of the air in these burr obstruction air flow path 47 can be prevented.
In addition, at the electric fan 7 of embodiments of the present invention with in possessing its electric dust collector 1, when setting the length of the width direction of chamfered edge portion 42h as a3, a3 meets a3<b2 (wherein, in formula, b2 and above-mentioned synonym) relation.
According to this electric fan 7 and the electric dust collector 1 possessing it, the above-mentioned smelt of spilling is easy to because of gravity be contained in chamfered edge portion 42.Therefore, even if just in case define burr, also can prevent from being formed burr outstanding in the transverse direction.That is, the flowing because of the air in these burr obstruction air flow path 47 can be prevented.
The present invention is not limited to above-mentioned mode of execution, comprises various variation.Such as, above-mentioned mode of execution describes in detail for ease of the present invention being described with understanding, and is not limited to all structures that must possess explanation.In addition, a part for the structure of certain mode of execution can be replaced into the structure of other mode of executions, or in the structure of certain mode of execution, add the structure of other mode of executions.In addition, for a part for the structure of each mode of execution, can add, delete, replace other structures.
Claims (5)
1. an electric fan, is characterized in that, comprising:
Rotated by motoring and send the impeller of air stream;
Receive the shell of described motor;
Determine impeller, it configures in the mode of the outer circumferential side surrounding described impeller, the air stream sent is guided to the ventilation path in described shell from described impeller;
To cover the fan guard that described impeller and described mode of determining impeller are arranged from outside; With
Ring-shaped member, it is formed as ring-type, is configured in describedly to determine between impeller and described fan guard,
Describedly determine impeller and have:
With the roughly circular demarcation strip that the mode that plate face is relative with described ring-shaped member configures; With
Facing by the plate from described demarcation strip multiple that plate body that described ring-shaped member side erects formed and determine impeller blade,
Chamfered edge portion is formed in described front end of determining impeller blade,
Multiple blade inserting groove that described end of determining impeller blade is inserted is formed at described ring-shaped member,
Described end of determining impeller blade, engages with described ring-shaped member in described blade inserting groove.
2. electric fan as claimed in claim 1, is characterized in that:
If the height in described chamfered edge portion is b2, when the degree of depth of described blade inserting groove is b1, the relation of b1>b2 is set up.
3. electric fan as claimed in claim 1, is characterized in that:
Be pre-formed with welding rib in described end of determining impeller blade, describedly determine impeller blade and make the melting of described welding rib by vibration friction, thus to engage with described ring-shaped member.
4. electric fan as claimed in claim 1, is characterized in that:
Determine impeller blade and be formed with described at least 2 boss being embedded into the positioning hole being arranged at described ring-shaped member.
5. an electric dust collector, is characterized in that:
Possesses the electric fan according to any one of Claims 1 to 4.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013173028A JP2015040539A (en) | 2013-08-23 | 2013-08-23 | Electric blower and vacuum cleaner including the same |
| JP2013-173028 | 2013-08-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104421185A true CN104421185A (en) | 2015-03-18 |
| CN104421185B CN104421185B (en) | 2016-08-31 |
Family
ID=52694833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410374153.2A Expired - Fee Related CN104421185B (en) | 2013-08-23 | 2014-07-31 | Electric fan and the electric dust collector possessing it |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2015040539A (en) |
| CN (1) | CN104421185B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107772737A (en) * | 2016-08-30 | 2018-03-09 | 戴森技术有限公司 | Hand device |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3327294A4 (en) * | 2016-06-30 | 2019-04-17 | Nidec Corporation | Blower device and cleaner |
| JP2023174079A (en) * | 2022-05-27 | 2023-12-07 | ミネベアミツミ株式会社 | Impeller and centrifugal fan |
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| JPH06193595A (en) * | 1992-12-25 | 1994-07-12 | Matsushita Electric Ind Co Ltd | Electric blower |
| JPH10252693A (en) * | 1997-03-11 | 1998-09-22 | Mitsubishi Electric Corp | Motor-drive blower |
| CN1271061A (en) * | 1999-04-20 | 2000-10-25 | 三洋电机株式会社 | Motor wind blower and motor dust cleaner thereof |
| CN1884844A (en) * | 2005-06-24 | 2006-12-27 | 日立家用电器公司 | Electric blowing fan, and electric dust collector having same |
| JP2009030552A (en) * | 2007-07-27 | 2009-02-12 | Sanyo Electric Co Ltd | Electric blower |
| CN101608630A (en) * | 2008-06-17 | 2009-12-23 | 日立空调·家用电器株式会社 | Electric blower and possess the electric dust collector of this electric blower |
| CN101608631A (en) * | 2008-06-17 | 2009-12-23 | 日立空调·家用电器株式会社 | Electric blower and possess the electric dust collector of this electric blower |
-
2013
- 2013-08-23 JP JP2013173028A patent/JP2015040539A/en active Pending
-
2014
- 2014-07-31 CN CN201410374153.2A patent/CN104421185B/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06193595A (en) * | 1992-12-25 | 1994-07-12 | Matsushita Electric Ind Co Ltd | Electric blower |
| JPH10252693A (en) * | 1997-03-11 | 1998-09-22 | Mitsubishi Electric Corp | Motor-drive blower |
| CN1271061A (en) * | 1999-04-20 | 2000-10-25 | 三洋电机株式会社 | Motor wind blower and motor dust cleaner thereof |
| CN1884844A (en) * | 2005-06-24 | 2006-12-27 | 日立家用电器公司 | Electric blowing fan, and electric dust collector having same |
| JP2009030552A (en) * | 2007-07-27 | 2009-02-12 | Sanyo Electric Co Ltd | Electric blower |
| CN101608630A (en) * | 2008-06-17 | 2009-12-23 | 日立空调·家用电器株式会社 | Electric blower and possess the electric dust collector of this electric blower |
| CN101608631A (en) * | 2008-06-17 | 2009-12-23 | 日立空调·家用电器株式会社 | Electric blower and possess the electric dust collector of this electric blower |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107772737A (en) * | 2016-08-30 | 2018-03-09 | 戴森技术有限公司 | Hand device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2015040539A (en) | 2015-03-02 |
| CN104421185B (en) | 2016-08-31 |
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| CP01 | Change in the name or title of a patent holder |
Address after: Tokyo, Japan Patentee after: Hitachi Global Living Program Co.,Ltd. Address before: Tokyo, Japan Patentee before: Hitachi Appliances, Inc. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160831 |