CN104863897A - Volute - Google Patents

Volute Download PDF

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Publication number
CN104863897A
CN104863897A CN201510218531.2A CN201510218531A CN104863897A CN 104863897 A CN104863897 A CN 104863897A CN 201510218531 A CN201510218531 A CN 201510218531A CN 104863897 A CN104863897 A CN 104863897A
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China
Prior art keywords
air
spiral case
side plate
shape portion
snail
Prior art date
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Granted
Application number
CN201510218531.2A
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Chinese (zh)
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CN104863897B (en
Inventor
易正清
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Midea Group Co Ltd
GD Midea Air Conditioning Equipment Co Ltd
Original Assignee
Midea Group Co Ltd
Guangdong Midea Refrigeration Equipment Co Ltd
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Priority to CN201510218531.2A priority Critical patent/CN104863897B/en
Publication of CN104863897A publication Critical patent/CN104863897A/en
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Publication of CN104863897B publication Critical patent/CN104863897B/en
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Abstract

The invention discloses a volute which comprises a volute-shaped part used to store a centrifugal wind wheel and air outlet parts formed on two sides of the volute-shaped part, wherein a rear air inlet is formed in the volute-shaped part, and a front air outlet communicated with the volute-shaped part is formed in each of the air outlet parts. In this way, the rear air inlet and the two front air outlets are formed in the volute, positions for air inlet and air outlet are changed, air outlet points are added, and thus air outlet efficiency is increased.

Description

Spiral case
Technical field
The present invention relates to centrifugal blower technology, particularly a kind of spiral case.
Background technique
The intake grill central axis that centrifugal blower volute is in the past arranged and exhaust outlet central axis are two mutual vertical and disjoint space lines, the air intake direction of centrifugal blower is mutually vertical with air-out direction, and this seriously constrains the application of centrifugal blower in the specific environment such as air-out direction requirement is consistent with air intake direction.
Summary of the invention
The present invention is intended at least to solve one of technical problem existed in prior art.For this reason, the present invention needs to provide a kind of spiral case.
The spiral case of embodiment of the present invention:
For accommodating the snail shape portion of centrifugal wind wheel, described snail shape portion forms rear air inlet; And
Be formed at the outlet section of both sides, described snail shape portion, each described outlet section is formed with the front air outlet be communicated with described snail shape portion.
In some embodiments, described snail shape portion comprises:
Header board, described header board comprises substantially rounded central part and the tangential outward extending snail tongue along described central part; And
The first side plate extended back from the edge of described header board.
In some embodiments, the width of described snail tongue is greater than the radius of described central part.
In some embodiments, the rear end in described snail shape portion is formed with outside flanging, and the external frame of described flanging is substantially rectangular, and size is substantially identical with the diameter of described central part, and described flanging is formed with the screw for installing.
In some embodiments, described outlet section comprises the rectangular base plate of extending from described flanging and the second side plate extended forward from the edge of described base plate, described second side plate near described snail tongue is formed with the connection mouth be communicated with described snail tongue, described exhaust outlet is formed at described side plate front end, and the length of described outlet section is substantially identical with described flanging.
In some embodiments, the first arc guide face is formed between described base plate and described second side plate away from described snail shape portion.
In some embodiments, described snail shape portion comprises:
Header board, described header board comprises substantially rounded central part and the tangential outward extending snail tongue along described central part; And
The first side plate extended back from the edge of described header board; Described first side plate and described second side plate joint are formed with the second guide face.
In some embodiments, described spiral case also comprises the air-ducting ring being arranged at described rear air inlet, described air-ducting ring comprise the first ring segment and from described first ring segment forward and curve inwardly extend the first annular guide plate.
In some embodiments, the external diameter of described air-ducting ring is more than or equal to described rear air inlet, described centrifugal wind wheel rear end is formed with wind scooper, described wind scooper comprises the second ring segment and from described second ring segment inwardly and backward bending the second annular guide plate extended, described air-ducting ring and described wind scooper are coaxially arranged, and described first annular guide plate stretches into described second annular guide plate.
In some embodiments, described spiral case by with centrifugal wind wheel matched design, the air-out direction of centrifugal blower can be made parallel with air intake direction.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of mode of execution, wherein:
Fig. 1 is the schematic perspective view of the cabinet air-conditioner of embodiment of the present invention.
Fig. 2 is the floor map of the cabinet air-conditioner of embodiment of the present invention.
Fig. 3 is the generalized section of the hatching III-III along Fig. 2.
Fig. 4 is the generalized section of the hatching IV-IV along Fig. 2.
Fig. 5 is the generalized section of the hatching V-V along Fig. 2.
Fig. 6 is the generalized section of the hatching VI-VI along Fig. 2.
Fig. 7 is the schematic perspective view of the air-conditioning system of the cabinet air-conditioner of embodiment of the present invention.
Fig. 8 is the decomposing schematic representation of the air cleaning system of the cabinet air-conditioner of embodiment of the present invention.
Fig. 9 is the schematic perspective view of the air cleaning system of the cabinet air-conditioner of embodiment of the present invention.
Figure 10 is the schematic perspective view of the centrifugal wind wheel of the cabinet air-conditioner of embodiment of the present invention.
Figure 11 is the schematic perspective view of the spiral case of the cabinet air-conditioner of embodiment of the present invention.
Figure 12 is the schematic perspective view of another angle of the spiral case of the cabinet air-conditioner of embodiment of the present invention.
Figure 13 is the schematic perspective view of the electric machine support of the cabinet air-conditioner of embodiment of the present invention.
Figure 14 is the working principle schematic diagram of the cabinet air-conditioner of embodiment of the present invention.
Embodiment
Be described below in detail embodiments of the present invention, the example of described mode of execution is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the mode of execution be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
In describing the invention, it will be appreciated that, term " center ", " longitudinally ", " laterally ", " length ", " width ", " thickness ", " upper ", " under ", " front ", " after ", " left ", " right ", " vertically ", " level ", " top ", " end ", " in ", " outer ", " clockwise ", orientation or the position relationship of the instruction such as " counterclockwise " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristics.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more described features.In describing the invention, the implication of " multiple " is two or more, unless otherwise expressly limited specifically.
In describing the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection or can communication mutually; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature in second feature it " go up " or it " under " the first and second features can be comprised directly contact, also can comprise the first and second features and not be directly contact but by the other characterisation contact between them.And, fisrt feature second feature " on ", " top " and " above " comprise fisrt feature directly over second feature and oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " comprise fisrt feature directly over second feature and oblique upper, or only represent that fisrt feature level height is less than second feature.
Disclosing hereafter provides many different mode of executions or example is used for realizing different structure of the present invention.Of the present invention open in order to simplify, hereinafter the parts of specific examples and setting are described.Certainly, they are only example, and object does not lie in restriction the present invention.In addition, the present invention can in different example repeat reference numerals and/or reference letter, this repetition is to simplify and clearly object, itself does not indicate the relation between discussed various mode of execution and/or setting.In addition, the various specific technique that the invention provides and the example of material, but those of ordinary skill in the art can recognize the application of other techniques and/or the use of other materials.
The spiral case of embodiment of the present invention comprises:
For accommodating the snail shape portion of centrifugal wind wheel, described snail shape portion forms rear air inlet; And
Be formed at the outlet section of both sides, described snail shape portion, each described outlet section is formed with the front air outlet be communicated with described snail shape portion.
So, described spiral case is formed and states rear air inlet and two described front air outlets to some extent, adds air-out point while changing the position of air intake and air-out, thus improves air-out efficiency.
In some embodiments, described snail shape portion comprises:
Header board, described header board comprises substantially rounded central part and the tangential outward extending snail tongue along described central part; And
The first side plate extended back from the edge of described header board.
So, with the form fit of described centrifugal wind wheel, improve space availability ratio, be beneficial to miniaturization.In addition, because described snail tongue is along the tangential extension of described central part, therefore, the air-flow that described centrifugal wind wheel is formed can be conducting to described snail tongue efficiently.
In some embodiments, the width of described snail tongue is greater than the radius of described central part.
So, the cross-section area of described snail tongue can be improved, thus ensure the air-flow that described centrifugal wind wheel is formed thus be conducting to described snail tongue efficiently.
In some embodiments, the rear end in described snail shape portion is formed with outside flanging, and the external frame of described flanging is substantially rectangular, and size is substantially identical with the diameter of described central part, and described flanging is formed with the screw for installing.
So, described volute shape is upright, be convenient to install, and installation strength is high.
In some embodiments, described outlet section comprises the rectangular base plate of extending from described flanging and the second side plate extended forward from the edge of described base plate, described second side plate near described snail tongue is formed with the connection mouth be communicated with described snail tongue, described exhaust outlet is formed at described side plate front end, and the length of described outlet section is substantially identical with described flanging.
So, the size expanding described exhaust outlet when described spiral case global shape Founder is as much as possible made.
In some embodiments, the first arc guide face is formed between described base plate and described second side plate away from described snail shape portion.
So, air-out efficiency can be improved.
In some embodiments, described snail shape portion comprises:
Header board, described header board comprises substantially rounded central part and the tangential outward extending snail tongue along described central part; And
The first side plate extended back from the edge of described header board; Described first side plate and described second side plate joint are formed with the second guide face.
So, air-out efficiency can be improved.
In some embodiments, described spiral case also comprises the air-ducting ring being arranged at described rear air inlet, described air-ducting ring comprise the first ring segment and from described first ring segment forward and curve inwardly extend the first annular guide plate.
So can improve air-out efficiency.
In some embodiments, the external diameter of described air-ducting ring is more than or equal to described rear air inlet, described centrifugal wind wheel rear end is formed with wind scooper, described wind scooper comprises the second ring segment and from described second ring segment inwardly and backward bending the second annular guide plate extended, described air-ducting ring and described wind scooper are coaxially arranged, and described first annular guide plate stretches into described second annular guide plate.
So, air-out efficiency can be improved.
Concrete, refer to Fig. 1, in the present embodiment, described spiral case is applied to cabinet air-conditioner 100.
Cabinet air-conditioner 100 comprises housing 10, support frame 20, air-conditioning system 30, electrically-controlled component 40 and air cleaning system 50.Support frame 20, air-conditioning system 30, electrically-controlled component 40 and air cleaning system 50 are arranged in housing 10.Air-conditioning system 30, electrically-controlled component 40 and air cleaning system 50 are supported on support frame 20.
See also Fig. 2 and Fig. 5-6, housing 10 comprises chassis 11, rear plate 12, side plate 13, header board 14, sliding door and upper cover 16.Rear plate 12, side plate 13 and header board 14 are installed on chassis 11.Upper cover 16 is located on rear plate 12, side plate 13, header board 14, thus limits containing space.
Housing 10 is formed with upper chamber 10a, lower chambers 10b, run through the upper air duct 10c of upper chamber 10a and run through the lower air duct 10d of lower chambers 10b.Upper chamber 10a and lower chambers 10b is formed between header board 14 and rear plate 12, rear plate 12 is formed with the enterprising air port 121 be communicated with upper chamber 10a and the lower intake grill 122 be communicated with lower chambers 10b, header board 14 is formed with the upper air blowing opening 141 be communicated with upper chamber 10a and the lower air blowing opening 142 be communicated with lower chambers 10b, and upper air duct 10c is formed between enterprising air port 121 and upper air blowing opening 141.Lower air duct 10b is formed between lower intake grill 122 and lower air blowing opening 142.
Upper air blowing opening 141 comprises upper left air blowing opening 1411 and upper right air blowing opening 1412, and lower air blowing opening 142 comprises lower-left air blowing opening 1421 and bottom right air blowing opening 1422.
Sliding door comprises left sliding door 151 and right sliding door 152, and left sliding door 151 and right sliding door 152 slide respectively and be located on header board 14, and the left and right sides being positioned at header board 14 hides for slip or exposes upper air blowing opening 141 and lower air blowing opening 142.
So, air blowing opening 141 and lower air blowing opening 142 can be hidden when not using, preventing contamination by dust, or the animal such as insect or mouse such as cockroach enters and builds nest, harms cabinet air-conditioner 100.
Rear plate 12 convex shaped forming V-shape backward.The position of lower intake grill 122 is provided with lower air intake grid 1221.
So, cabinet air-conditioner 100 is put when corner, can utilize coordinating of rear plate 12 and corner, make space availability ratio higher.
Support frame 20 comprises demarcation strip 21 and dunnage 22, and demarcation strip 21 is divided into upper chamber 10a and lower chambers 10b housing 10.Air-conditioning system 30 is located in the upper chamber 10a of housing 10, and air cleaning system 50 is located in the lower chambers 10b of housing 10.Electrically-controlled component 40 is located between air-conditioning system 30 and air cleaning system 50, and is installed on dunnage 22.
So, cabinet air-conditioner 100 more effectively can remove indoor harmful air pollutant, such as dust, pollen, formaldehyde.The density of air pollutant is generally large than air, and the air pollutant of ground surface are than concentrating above ground surface.Air cleaning system 50 is installed on lower position, can more effectively purify air.
Please refer to the drawing 3 and Fig. 5-7, air-conditioning system 30 comprises filter screen 31, indoor heat exchanger 32, indoor fan 33, air channel 34 and supporting frame 35.
Filter screen 31 is located between rear plate 12 and indoor heat exchanger 32.Heat exchanger 33 and rear plate 12 form fit, namely raise into V shape.Separated by a distance between indoor fan 33 and indoor heat exchanger 32.
Indoor fan 33 comprises left cross flow fan 331 and right cross flow fan 332, and left cross flow fan 331 is vertical with right cross flow fan 332 to be arranged.Right cross flow fan 332 comprises right motor 3321, right tubular wine wheel 3322 and right electric machine support 3323, the lower end of right tubular wine wheel 3322 is located at by right motor 3321, the axle of right motor 3321 is connected with the hole of right tubular wine wheel 3322, and right motor 3321 is installed with on right electric motor stand 3323.The position of left cross flow fan 331 is identical with right cross flow fan 332 with mounting type
Air channel 34 is jointly limited by component such as spiral case 343, wind guiding blade 344 and intermediate clapboards 345 and forms, and one end, air channel 341 is provided with intake grill 341, and intake grill 341 communicates with enterprising air port 121.Air channel 34 the other end is provided with exhaust outlet 342, and exhaust outlet 342 comprises left exhaust outlet 3421 and right exhaust outlet 3422, and left exhaust outlet 3421 and right exhaust outlet 3422 communicate with upper left air blowing opening 1411 and upper right air blowing opening 1412 respectively.
The position of left exhaust outlet 3421 and right exhaust outlet 3422 is respectively equipped with left wind guiding blade 3441 and right wind guiding blade 3442.Left wind guiding blade 3441 and right wind guiding blade 3442 can regulate the wind direction of air-out respectively.
Supporting frame 35 comprises top board 351 and base plate 352.Upper cover 16 is located on top board 351, and top board 351 is provided with multiple groove and hole, and upper cover 16 fastens with top board 351 and/or is threaded.Base plate 352 lower surface is provided with bearing pin 3521, and base plate 352 passes through bearing pin 3521 location and installation on demarcation strip 21.
Air-conditioning system 30 is for refrigeration or heat.Air-conditioning system 30 is freezed, the low pressure steam of refrigeration agent is sucked by compressor (not shown) and drains into outdoor heat exchanger (not shown) after boil down to high pressure steam, now outdoor heat exchanger is condenser, the outdoor air that the axial fan (not shown) of outdoor fan sucks simultaneously flows through outdoor heat exchanger, take away refrigeration agent liberated heat, make high pressure refrigerant vapor be condensed into highly pressurised liquid.Highly pressurised liquid sprays into indoor heat exchanger 32 after filter (not shown), throttle mechanism (not shown), and now indoor heat exchanger 32 is vaporizer, and evaporates under corresponding low pressure, draws heat around.The air turned cold after indoor fan 33 makes heat release is simultaneously sent to indoor by air channel 34.Indoor air like this constantly circulates, and reaches the object reducing temperature or dehumidifying.The heating operations of air conditioning system 30 is contrary with process of refrigerastion.
Certainly, air-conditioning system 30 can be not limited to present embodiment, in other embodiments, can adopt the air-conditioning system of axial-flow blower formula.
Electrically-controlled component 40 is connected with air-conditioning system 20 and air purifier system 50, for controlling both operations.
Refer to Fig. 4, Fig. 5-6 and Fig. 8-9 air purifier system 50 comprises filtration system 51 and fan system, and air purifier system 50 is installed on chassis 11.Fan system comprises centrifugal blower 521, and filtration system 51 is located between centrifugal blower 521 and lower air intake grid 1221.
Filtration system 51 comprises antibacterial and mouldproof just filter screen, sponge active carbon layer, cellular activated carbon layer and efficient filter screen (HighEfficiency Particular Air Filter, HEPA) (not shown), antibacterial and mouldproof just filter screen, sponge active carbon layer, cellular activated carbon layer and efficient filter screen (HEPA, HighEfficiency Particular Air Filter) is set gradually to the direction of centrifugal blower 521 by lower air intake grid 1221.
Refer to Figure 10, centrifugal blower 521 comprises centrifugal wind wheel 5211 and motor 5212.Centrifugal wind wheel 5211 comprises wheel hub 5211a and is installed on the blade 5211b on wheel hub 5211a.
Blade 5211b is multiple, and multiple blade 5211b extends back along the direction of the rotating shaft being parallel to centrifugal wind wheel 521 from wheel hub 5211a, and parabolically radial arrangement.
Blade 5211b is formed with rear end profile line 5211c and front end profile line 5211d.The rear end profile line 5211c of each blade 5211b comprises the first arcuate segment 5211e outwards extended back from the rotating shaft of centrifugal wind wheel, and the first arcuate segment 5211e forms Ji Fengqu between multiple blade 5211b.
The front end profile line 5211d of each blade 5211b comprises the second arcuate segment 5211g outwards extended forward from the rotating shaft of centrifugal wind wheel, and the second arcuate segment 5211g forms reduced-pressure zone between multiple blade 5211b.
The front end profile line 5211d of blade 5211b also comprises the first straightway 5211h, and the first straightway 5211h is connected with first outward extending one end of arcuate segment 5211e211e.The rear end profile of blade 5211b also comprises the second straightway 5211f, and the stretch out one end in direction of the second straightway 5211f and the second arcuate segment 5211g is connected.First arcuate segment 5211e is substantially identical with the radial length of the second arcuate segment 5211g.Second straightway 5211f is substantially identical with the radial distance of the second straightway 5211f.Wheel hub 5211a is sheet material and the front end contoured fit of shape and blade 5211b, and the front end of each blade 5211b is connected with wheel hub 5211a.
Centrifugal wind wheel 521 also comprises wind scooper 5211i.Wind scooper 5211i is arranged at the rear end of blade 5211b.Wind scooper 5211i comprises the second ring segment 5211k and the second annular guide plate 5211k.Second annular guide plate 5211k from the second ring segment 5211k forward and the extension that curves inwardly form.The external diameter of wind scooper 5211i is less than the external diameter of blade 5211b, and the internal diameter of wind scooper 5211i is greater than the external diameter of Ji Fengqu.
Motor 5212 is installed on electric machine support 524, and electric motor stand 524 is connected with chassis 11.
Please refer to the drawing 13, electric machine support 524 comprises vertical support frame 5241 and horizontal fixing frame 5242.Vertical support frame 5241 is arranged on the chassis 11 of cabinet air-conditioner, and vertical support frame 5241 is formed with motor holding part 5241a.Horizontal fixing frame 5242 is connected with the top of vertical support frame 5241, and horizontal fixing frame 5242 is for being connected with the rear plate of cabinet air-conditioner.
Vertical support frame 5241 comprises bottom bar 5241b and vertical rod 5241c.The quantity of vertical rod 5241c is two, and is vertically connected on bottom bar 5241b.Motor holding part 5241a is formed between two vertical rod 5241c.The two ends of bottom bar 5241b are extended with the first fixed tab 5241d, and the first fixed tab 5241d is formed with the first screw 5241e, and the first screw 5241e is used for, with screw fit, bottom bar 5241b is fixed to chassis.
Vertical support frame 5241 also comprises central sill 5241f and back timber 5241g.Central sill 5241f and back timber 5241g is connected between two vertical rod 5241c, and motor holding part 5241a is formed between central sill 5241f and back timber 5241g.
Horizontal fixing frame 5242 is connected with back timber 5241g, and the triangle sheet material for extending back from back timber 5241g.Horizontal fixing frame 5242 is formed with leg-of-mutton groove 5242a.Horizontal fixing frame 5242 comprises flanging 5242b, and flanging 5242b is connected with horizontal fixing frame 5242 one end away from vertical support frame 5241.Flanging 5242a is formed with the second screw 5242c, and the second screw 5242c is used for, with screw fit, horizontal fixing frame 5242 is fixed on rear plate 12.
Motor holding part 5241a is the arc notch 5241h be formed on two vertical rod 5241c, and arc notch 5241h mates with the body shape of motor 5212, for accommodating body.Motor 5212 also comprises from the outward extending fixed tab 5252a of motor body.Fixed tab 5252a is formed with the 3rd screw, and two vertical rod 5241c are formed with the four screw 5241i corresponding with the 3rd screw.3rd screw is used for coordinating with the 4th screw 5241i and motor 5212 is fixed on motor holding part 5241a by screw fit.
The motor shaft of motor 5212 coordinates with the center hole of wheel hub 5211a, to drive centrifugal wind wheel 5211 to rotate when motor 5212 starts.Be provided with central diaphragm 522 between motor 5212 and centrifugal wind wheel 5211, central diaphragm 522 is vertically connected on base 11.
Fan system also comprises spiral case 5231.
Please refer to the drawing 11-12, spiral case 5231 comprises snail shape portion 5231a and outlet section 5231b.Snail shape portion 5231a is for accommodating centrifugal wind wheel 5211, and snail shape portion 5231a forms rear air inlet 5231c.Outlet section 5231b is formed at the both sides of snail shape portion 5231a, and each outlet section 5231b is formed with the front air outlet 5231h be communicated with snail shape portion 5231a.
Snail shape portion 5231a comprises header board 5231d and the first side plate 5231e.First side plate 5231e extends back from the edge of header board 5231d.Header board 5231d comprises central part 5231f and snail tongue 5231g, and central part 5231f is substantially rounded, snail tongue 5231g centrally tangentially the stretching out of portion 5231f.The width of snail tongue 5231g is greater than the radius of central part 5231f.
The rear end that spiral case 5231 also comprises snail shape portion 5231a forms outside flanging 5231k.The external frame of flanging 5231k is substantially rectangular, and size is substantially identical with the diameter of central part 5231f, and the length of flanging 5231k is substantially identical with outlet section 5231b.Flanging 5231k is formed with the screw for installing.
The second side plate 5231j that the edge that outlet section 5231b comprises rectangular base plate 5231i and the base plate 5231i extended from flanging extends forward.The connection mouth of snail tongue 5231g connection is formed near the second side plate 5231j of snail tongue 5231g.Front air outlet 5231h is formed at the second side plate 5231j front end.The first arc guide face 5231p is formed between base plate 5231i and the second side plate 5231j away from snail shape portion 5231a.The joint of the first side plate 5231e and the second side plate 5231j is formed with the second arc guide face 5231q.
Spiral case 5231 also comprises air-ducting ring 5231l, and air-ducting ring 5231l is arranged at rear air inlet 5231c place.Air-ducting ring 5231l comprises the first ring segment 5231m and the first annular guide plate 5231n.First annular guide plate 5231n from the first ring segment 5231m forward and the extension that curves inwardly form.Air-ducting ring 5231l and wind scooper 5211i is coaxially arranged, and the first annular guide plate 5231n stretches into the second annular guide plate 5211k.
Front air outlet 5231h is two, communicates respectively with lower-left air blowing opening 1421 and bottom right air blowing opening 1422.
In the description of this specification, specific features, structure, material or feature that the description of reference term " mode of execution ", " some mode of executions ", " exemplary embodiment ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with described mode of execution or example are contained at least one mode of execution of the present invention or example.In this manual, identical mode of execution or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more mode of execution or example.
Although illustrate and describe embodiments of the present invention, those having ordinary skill in the art will appreciate that: can carry out multiple change, amendment, replacement and modification to these mode of executions when not departing from principle of the present invention and aim, scope of the present invention is by claim and equivalents thereof.

Claims (10)

1. a spiral case, is characterized in that, comprising:
For accommodating the snail shape portion of centrifugal wind wheel, described snail shape portion forms rear air inlet; And
Be formed at the outlet section of both sides, described snail shape portion, each described outlet section is formed with the front air outlet be communicated with described snail shape portion.
2. spiral case as claimed in claim 1, it is characterized in that, described snail shape portion comprises:
Header board, described header board comprises substantially rounded central part and the tangential outward extending snail tongue along described central part; And
The first side plate extended back from the edge of described header board.
3. spiral case as claimed in claim 2, it is characterized in that, the width of described snail tongue is greater than the radius of described central part.
4. spiral case as claimed in claim 1, it is characterized in that, the rear end in described snail shape portion is formed with outside flanging, and the external frame of described flanging is substantially rectangular, and size is substantially identical with the diameter of described central part, and described flanging is formed with the screw for installing.
5. spiral case as claimed in claim 4, it is characterized in that, described outlet section comprises the rectangular base plate of extending from described flanging and the second side plate extended forward from the edge of described base plate, described second side plate near described snail tongue is formed with the connection mouth be communicated with described snail tongue, described exhaust outlet is formed at described side plate front end, and the length of described outlet section is substantially identical with described flanging.
6. spiral case as claimed in claim 5, is characterized in that, form the first arc guide face between described base plate and described second side plate away from described snail shape portion.
7. spiral case as claimed in claim 5, it is characterized in that, described snail shape portion comprises:
Header board, described header board comprises substantially rounded central part and the tangential outward extending snail tongue along described central part; And
The first side plate extended back from the edge of described header board; Described first side plate and described second side plate joint are formed with the second guide face.
8. spiral case as claimed in claim 1, it is characterized in that, described spiral case also comprises the air-ducting ring being arranged at described rear air inlet, and described air-ducting ring comprises the first ring segment and from described first ring segment forward and the first annular guide plate extended that curves inwardly.
9. spiral case as claimed in claim 8, it is characterized in that, the external diameter of described air-ducting ring is more than or equal to described rear air inlet, described centrifugal wind wheel rear end is formed with wind scooper, described wind scooper comprises the second ring segment and from described second ring segment inwardly and backward bending the second annular guide plate extended, described air-ducting ring and described wind scooper are coaxially arranged, and described first annular guide plate stretches into described second annular guide plate.
10. spiral case as claimed in claim 1, it is characterized in that, the air intake direction of described rear air inlet is identical with the air-out direction of described front air outlet.
CN201510218531.2A 2015-04-30 2015-04-30 Spiral case Active CN104863897B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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