CN1896610A - Air conditioner - Google Patents

Abstract

This invention relates to air conditioner. It includes the casing body, which forms many air passages feeding and discharging air; the heat exchanger positioned inside of the casing body; the spiral fan composed of columnar axes and many spiral blades which spiraling twist from one end of axes to the other end along the axial direction. It forcibly supplies air to the vertical axial direction of casing body; the driving electric engine, which is set at underside of the said spiral fan and drives the spiral fan towards one direction; the air-guiding device which is set at upper side of the said spiral fan and guides the air discharged from spiral fan to the outside. This invention not only has high air-quantity high air pressure characters, but also can reduce the noise and the entire size of the system.

Description

Air-conditioner

Technical field

The present invention relates to air-conditioner.The more detailed the present invention that says relates to: both had the air-flow character of high air quantity and high blast, overall dimensions that again can reduction system, and the air-conditioner of the new structure of the noise can lower operation the time.

Background technology

As everyone knows, the operation principle of air-conditioner is as follows: compression refrigerant gas in compressor, after the cold media gas of above-mentioned compression liquefied in condensing machine, reduce pressure by expansion valve, after in evaporimeter, gasifying again then, the heat of gasification of the refrigerant that utilization absorbs is operated the indoor cold-room that carries out, and perhaps carries out the greenhouse operation by the contrary circulation of above-mentioned cold-room circulation to indoor, thereby builds comfortable temperature environment to people.

In above-mentioned air-conditioner, be arranged at indoor ground, the air-conditioner that is applicable to the cold-room work in bigger space is cabinet air conditioner (package type).Below, with reference to Fig. 1, describe as follows to the structure of in the past cabinet air conditioner and an example of effect.

As shown in Figure 1, the structure of the indoor set of cabinet air conditioner in the past is as follows: housing 1 possesses the air suction inlet 2 that the bottom is arranged and the air outlet 3 on top.Upside in the above-mentioned housing 1 is provided with the heat exchanger 6 that is used to cool off air, and its downside is equipped with by behind the air suction inlet 2 suction extraneous airs, to the centrifugal Air Blast fan 4 of above-mentioned heat exchanger 6 sides air-supply.

Therefore, because the driving of above-mentioned centrifugal Air Blast fan 4, air will flow into by the air suction inlet 2 of housing 1 bottom.Above-mentioned leaked-in air will carry out heat exchange when the heat exchanger 6 on the top by being arranged at centrifugal Air Blast fan 4, the air outlet 3 of the back that is cooled by housing 1 top is to indoor discharge.

In addition, though not prompting among the figure, the off-premises station of above-mentioned cabinet air conditioner is provided with: with compressor, the condensing machine of condensing above-mentioned refrigerant of discharging from compressor, the Air Blast fan of discharging behind the refrigerant boil down to HTHP.

But, in the cabinet air conditioner of the conventional art of Gou Chenging,, used centrifugal Air Blast fans such as hot blast fan or turbofan as mentioned above as the device of wind pushing air.

Above-mentioned centrifugal Air Blast fan has the inflow direction and the vertical flow behavior of discharge direction of air.Therefore, not only in design during air-conditioner, centrifugal Air Blast fan the position is set and direction is restricted, and for high air quantity also will make the size of Air Blast fan enough big, so be difficult to realize the miniaturization of air-conditioner.

Certainly, if use aerofoil fan, air is axially discharged after direction of principal axis flows into, thus Air Blast fan the position is set and direction will be restricted hardly.But, because the blast of aerofoil fan is less,, then need to increase the diameter of aerofoil fan, the size of increase air-conditioner that like this can integral body therefore if obtain the above blast of certain level.Therefore, common indoor machine of air-conditioner is not used aerofoil fan.

In order to address the above problem, Japan Patent 8-216229 number (1996.8.27 is open) provides along the axle center of oval tubular and made a plurality of blade shaped become spiral, thereby making air supply direction is direction of principal axis, and can increase air-conditioner fan and preparation method thereof of blast and air quantity.

But above-mentioned air-conditioner is overlapped and continuous formation with each blade of fan, so be difficult to make of general injection molding, can only make of special extrusion molding mode.Therefore, very unfavorable to producing in a large number, and can cause the problems such as manufacturing cost increase of air-conditioner thus.

As mentioned above, in the cabinet air conditioner of conventional art,, centrifugal Air Blast fans such as hot blast fan or turbofan have been used as the device of wind pushing air.Therefore, not only in design during air-conditioner, centrifugal Air Blast fan the position is set and direction is restricted, and for high air quantity also will make the size of Air Blast fan enough big, so be difficult to realize the miniaturization of air-conditioner.

Summary of the invention

The present invention proposes in order to solve the above problems.Therefore, the purpose of this invention is to provide: both had the air-flow character of high air quantity and high blast, the size of integral body that again can reduction system, and the air-conditioner of the new structure of the noise can lower operation the time.

Particularly, the present invention is a purpose so that following air-conditioner to be provided: adopt the air-flow character both had high air quantity and high blast, high efficiency Air Blast fan that again can noise-decreasing.And in order effectively to improve the internal structure of air-conditioner, thereby lower the overall noise of system, and improve the air-supply characteristic, and make the optimized air conditioner of structure of Air Blast fan and relevant peripheral inscape.

To achieve these goals, the invention provides the air-conditioner that comprises the following components formation: the housing that is formed with the air duct of a plurality of suctions and discharge air; Be arranged at the heat exchanger in the above-mentioned housing; By columnar axle center and at the outer peripheral face in above-mentioned axle center, constitute with a plurality of spiral vanes that helical twist forms towards direction of principal axis from the end to end in axle center, and to the spiral fan of the vertical direction of principal axis forced air supply air of housing; Be arranged at the bottom of above-mentioned spiral fan, rotate the drive motors of spiral fan to a direction; Be arranged at above-mentioned spiral fan upper side, guide the air flow air guiding device of discharging laterally from spiral fan.

To achieve these goals, the present invention provides in addition and has comprised the air-conditioner that following components constitutes: the housing that is formed with the air duct of a plurality of suctions and discharge air; Be arranged at the heat exchanger in the above-mentioned housing; By columnar axle center and at the outer peripheral face in above-mentioned axle center, constitute with a plurality of spiral vanes that helical twist forms towards direction of principal axis from the end to end in axle center, and to the spiral fan of the vertical direction of principal axis forced air supply air of housing; Outside portion around above-mentioned spiral fan is provided with, and is used to improve the pilot hole of static pressure; Be arranged at the bottom of above-mentioned spiral fan, rotate the drive motors of spiral fan to a direction.

Has following effect according to the present invention: have the flow behavior of wind pushing air axially owing to be used for the spiral fan of wind pushing air, therefore the position is set almost without limits for Air Blast fan, and also can obtain big air quantity with less size, therefore the overall dimensions of air-conditioner be can dwindle, thereby miniaturization and microminiaturized characteristics embodied.In addition, can also produce the air-conditioner that housing is variforms such as cuboid or cylindrical shape, and because manufacture craft is simple, thereby manufacturing cost can be saved.

In addition, the effect that the present invention had is: because air-conditioner of the present invention is provided with the stream guiding air guiding device in the outside, therefore can reduce since laterally the airflow flowing adverse current lose to the middle stream that produces.

In addition, the effect that the present invention had is: owing at the bottom surfaces center of air guiding device 19 cone guide device is set, therefore can prevent from the space that exists between spiral fan 13 and the air guiding device 19 to the adverse current phenomenon of fan central part.

In addition, air-conditioner of the present invention has following effect: by improving the structure of the motor fixture of support drive motor in housing, can lower the BPF noise.

And the effect that the present invention had is: owing in the portion of combining between the higher and lower levels of spiral fan the vibration isolation parts are set, therefore can lower the abnormal sound that high frequency waves cause.

In addition, be suitable under the situation of Air Blast fan that blade constitutes multistage, because wind pushing air axially improves static pressure, the therefore size that can dwindle the integral air conditioner system, and improve performance.

Description of drawings

Fig. 1 is the major part sectional drawing that shows general air-conditioner structure in the past.

Fig. 2 is the major part sectional drawing of demonstration according to the structure of an embodiment of air-conditioner of the present invention.

Fig. 3 is the oblique view of the 1st embodiment that shows the Air Blast fan of the air-conditioner be applicable to Fig. 2.

Fig. 4 is the major part sectional drawing that shows with the bonding state of the motor of the Air Blast fan of Fig. 3.

Fig. 5 is the plane that shows the Air Blast fan of Fig. 3.

Fig. 6 is the oblique view that shows pilot hole.

Fig. 7 a and Fig. 7 b are front elevation and the side views that shows the pilot hole of Fig. 6.

Fig. 8 is the reference oblique view that shows the shape of the resonator (resonator) that is applicable to pilot hole.

Fig. 9 is the reference chart that shows the effect that is suitable for resonator.

Figure 10 is the reference chart that is used to illustrate the effect of the inner situation that is suitable for attractive material of resonator.

Figure 11 shows to be used to prevent the air-flow of discharging from the spiral fan oblique view to the structure of central part adverse current (backflow) and noise-decreasing.

Figure 12 is the reference diagram that is used to illustrate according to the principle of the erasure effect of air guiding device of the present invention.

Figure 13 is that demonstration is according to the discharge top cover (head) of another embodiment of Figure 11 and the oblique view of air guiding device structure.

Figure 14 is the oblique view of structure that shows the motor fixture of the air-conditioner be applicable to Fig. 2.

Figure 15 is the exploded perspective view that shows the vibration isolation parts of Figure 14.

Figure 16 is the reference chart that shows the effect that is suitable for vibration isolation parts shown in Figure 14.

Figure 17 a and Figure 17 b are used to show the drawing of outlet (outlet) cell structure of discharging top cover, wherein,

Figure 17 a shows the oblique view of discharging the state before top cover rises.

Figure 17 b shows the oblique view that exposes state of discharging after top cover rises.

Figure 18 is the reference chart that shows the effect when being suitable for the top grid.

Figure 19 is the oblique view of the 2nd embodiment that shows the Air Blast fan of the air-conditioner be applicable to Fig. 2.

Figure 20 is the oblique view of the 3rd embodiment that shows the Air Blast fan of the air-conditioner be applicable to Fig. 2, is the drawing that shows the Air Blast fan of the long ball oblique crank Z heart that has been suitable for intermediate elongated.

Figure 21 is the oblique view of the 4th embodiment that shows the Air Blast fan of the air-conditioner be applicable to Fig. 2, is the drawing that shows the Air Blast fan that has been suitable for the truncated cone-shaped axle center.

Figure 22 is the oblique view of the 5th embodiment that shows the Air Blast fan of the air-conditioner be applicable to Fig. 2.

Figure 23 is the plane that shows Figure 22.

Figure 24 is the front elevation that shows Figure 22.

Figure 25 is the side view that shows Figure 22.

Figure 26 is the oblique view of the 6th embodiment that shows the Air Blast fan of the air-conditioner be applicable to Fig. 2.

Figure 27 is the plane that shows Figure 26.

Figure 28 is the front elevation that shows Figure 26.

Figure 29 is the side view that shows Figure 26.

Figure 30 is the oblique view of the 7th embodiment that shows the Air Blast fan of the air-conditioner be applicable to Fig. 2.

Figure 31 is the plane that shows Figure 30.

Figure 32 is the front elevation that shows Figure 30.

Figure 33 is the side view that shows Figure 30.

Figure 34 is the exploded perspective view that shows Figure 30.

Figure 35 is the oblique view of the 8th embodiment that shows the Air Blast fan of the air-conditioner be applicable to Fig. 2, is to be presented at the drawing that the fan gabarit is glued with the Air Blast fan of cylindrical housing.

Figure 36 is the front elevation that shows Figure 35.

Figure 37 is the oblique view of the 9th embodiment that shows the Air Blast fan of the air-conditioner be applicable to Fig. 2.

Figure 38 is the oblique view of the 10th embodiment that shows the Air Blast fan of the air-conditioner be applicable to Fig. 2.

Figure 39 is the oblique view of the 11st embodiment that shows the Air Blast fan of the air-conditioner be applicable to Fig. 2.

Figure 40 is the oblique view of the 12nd embodiment that shows the Air Blast fan of the air-conditioner be applicable to Fig. 2.

The critical piece description of reference numerals

10: housing 12: drive motors

13: spiral fan 136: rib

137: protrusion 138: indenture (dimple)

15: pilot hole 151: resonator

18: motor fixture 181: the electric machine support installation portion

182: motor holddown groove 183: damping rubber

184a-184b: brace table 185: external frame

19: air guiding device 190: cone guide device

20: discharge top cover 21: electric machine support

22: vibration isolation parts 221: metal washer

221a: axle through hole 222: rubber

222b: metal washer accepting groove 222a: axle through hole

The specific embodiment

Below, with reference to the accompanying drawings, the possible embodiment according to air-conditioner of the present invention is described in detail.

At first, Fig. 2 is the drawing of demonstration according to the structure of an embodiment of air-conditioner of the present invention.The top of housing 10 and bottom are formed with a plurality of air duct 100a, 100b separately.Fan bottom in housing 10 inboards is provided with probably the heat exchanger 11 that is ' V ' font attitude.

Here, flow by the each several part of above-mentioned ' V ' font heat exchanger 11 in order to make air, the air duct 100a of the bottom of above-mentioned housing 10 is formed at the forward and backward side's of housing 10 both sides.

In addition, be provided with in the above-mentioned housing 10: after air is forced into by the arbitrary part among above-mentioned each air duct 100a, 100b, make above-mentioned leaked-in air flow to vertical direction of principal axis, spiral fan 13 and the drive motors 12 of blow then opposite side air duct 100a, 100b.

Above-mentioned drive motors 12 utilizes motor fixture 18 to be fixed in the housing 10.The above-mentioned spiral fan 13 rotatable rotating shaft 12a that are incorporated into motor.

In addition, above-mentioned spiral fan 13 upper side are provided with the air guiding device 19 of box form.Here, the effect of above-mentioned air guiding device 19 is: in order to prevent that cutting off air to mid portion from the air-flow adverse current that spiral fan is discharged to circumferencial direction flows, thereby the guiding air rises to upper direction smoothly.

At this moment, above-mentioned drive motors 12 preferably is set to inboard recessed to a certain degree the form of its upper side to the axle center 132 of spiral fan 13.That is, be set to following structure: the main body upper end of drive motors 12 is positioned at 132 inboards, axle center, and wants high position in order to be located at respect to the bottom, axle center, and recessed structure.

The reason that why will be provided with like this is: because above-mentioned drive motors 12 is positioned at the lower inside of spiral fan 13, therefore can make the weight center of spiral fan 13 consistent with the axle joint portion of drive motors 12 with spiral fan 13.And then the vibration can lower spiral fan 13 rotation the time, and can dwindle the whole height of air-conditioner.

In addition, above-mentioned air guiding device 19 also has the muffler effect of noise-decreasing, will narrate in the back for its concrete structure and effect.

Below, with reference to the accompanying drawings, the indivedual inscapes that constitute air-conditioner of the present invention are described in detail.

With reference to Fig. 3 to Fig. 5, be applicable to that the spiral fan 13 of air-conditioner of the present invention also is called as ' Tai Ji fan '.Above-mentioned spiral fan is to be made of following components: secure bond is in the axle center 132 of the oval tubular of the rotating shaft 12a of drive motors 12; Outer peripheral face in above-mentioned axle center 132, an end of 132 forms along the direction of principal axis distortion to the other end from the axle center, and its lower-upper length will grow 2 blades 133 of certain-length with respect to the vertical length in axle center 132.

In addition, above-mentioned blade 133 has (tip) incision is sold in the inside portion that contacts from the bottom with above-mentioned axle center 132 to the outside of bottom form.Therefore, the bottom of above-mentioned blade 133 probably is sharp triangle form.

In addition, in the time of will observing fan on top, the angle that blade 133 rotates from the beginning to the end is called blade anglec of rotation α.Plane as shown in Figure 5, in the present embodiment, the blade anglec of rotation α of spiral fan 13 probably is 210 °.At this moment, see in the plane that blade 133 can not overlap and disturb the corresponding blade that is formed at opposite side.

Therefore that is, the blade anglec of rotation α of each blade 133 of spiral fan 13 of the present invention probably forms 210 °, has both had the blade anglec of rotation more than 180 °, and the processability in order to make is good again, forms the structure that does not have overlapped and the field of disturbing.

In addition, it is 210 ° that blade anglec of rotation α increases, and then the angle of outlet of air discharge also will become greatly, therefore is 180 ° situation with respect to the blade anglec of rotation, and the noise of blade end portion will lower.

In addition, above-mentioned each blade 133 forms the form of advancing in the shape of a spiral for axle center 132 outer peripheral faces.The spiral that the position presented that above-mentioned blade 133 is contacted with axle center 132 outer peripheral faces is opening under the situation in axle center, is y=x ^hThe function curve of [here, y is a dependent variable, and x is a undependent variable, and h is spiral index (Helix index), and the direction of principal axis in axle center is defined as X-direction, and the circumferencial direction in axle center is defined as Y direction].

Form following form according to the spiral fan 13 of the 1st embodiment of the present invention here: the value of being got for the spiral index (Helix index) of the value of the torsion angle of the axis direction in axle center as blade 133 is the value in 1.8 to 2.2 scopes.The value that the spiral index is got is 2.

That is, the spiral index is big more, just means that the axis in the more close axle center of blade tilts, and air is more flowed to axis direction, therefore can increase air output.

In addition, in case the spiral index becomes greatly, the friction noise with air in same rotation number can increase slightly, but can increase air output.Therefore and do not increasing air output, only keeping under the situation of same air output, can have the small rotation number, can lower motor noise, its result can not increase the noise of entire system.

In addition, in the spiral fan 13 of present embodiment, D is compared in the axle center _h/ D _bBe defined as: the diameter of blade 133 is to the diameter ratio in axle center, if the axle center ratio is 0.5, then because the blade amplitude is very wide, therefore the blast and the air quantity of the spiral fan of present embodiment will be the best at this moment.

In addition, according to experimental result, above-mentioned blade 133 has flow behavior preferably under following situation: increase angle from entrance side gradually to outlet side, make angle of outlet θ e greater than inlet angle θ i.

Special needs to be pointed out is, according to experimental result, under identical conditions, when the inlet angle θ i of above-mentioned blade 133 probably is 35 °, the noise minimum.This be because: the inlet angle θ i of blade 133 and probably almost consistent, so the turbulent flow generation is minimized at the streamline (stream line) of the incidence angle of 35 ° of leaked-in airs.

In addition, above-mentioned angle of outlet θ e forms 45 °, so after the discharge air is discharged with the 45 degree, flows along circumferencial direction.

In addition, the amplitude direction section of above-mentioned each blade 133 probably is " S " type, or the cut-off rule form of Tai Ji printed words.And, preferably open gradually to the bottom side section, and approach the form (that is, curvature reduce form) of straight line from the upper side of blade 133.In this case, flow into smooth and easyly at the air of entrance side, and can concentrate behind above-mentioned entrance side leaked-in air at outlet side and to discharge, therefore can improve the static pressure of discharging air owing to can make.

In addition, when 1: 1.5 level, vibration characteristics is good than th: tb for the thickness of above-mentioned axle center 132 and blade 133.

The thickness difference of above-mentioned blade 133, wherein, the vibration characteristics of the thickness that makes the part close with axle center 132 during greater than pin (tip) part in the radial direction outside is the best.This be because: by mind-set radial direction inboard in the weight of blade 133 is induced, can reduce the moment (moment) that Air Blast fan when rotation produces, thereby reduce vibration.

In addition, the spiral fan 13 of present embodiment in the back of blade 133, forms the rib 136 that plays tendon (tendon) effect along the length direction of blade for blade.

Above-mentioned rib 136 forms the length more than at least 1/3 of blade 133 length, and is benchmark with the centre of blade amplitude, at the position close with pin, forms identical with the blade twist direction or similar structure.

For lightening, the thickness that makes spiral fan makes under the situation of thickness attenuation of blade 133, because the blade shake will produce noise during rotation, at this moment the rib 136 that is formed at above-mentioned blade 133 back can reinforced blade 133 integral intensity, thereby can prevent above-mentioned noise.And above-mentioned rib also has the effect that prevents with the miscellaneous part resonance that constitutes air-conditioner.

In addition, above the inlet portion side that flows into of the air-flow of above-mentioned blade 133 bottoms or below be formed with the protrusion 137 that swells with respect to other positions.Above-mentioned protrusion is same as the rib 136 of the back that is formed at above-mentioned blade 133, also has the phenomenon that prevents that blade 133 from shaking owing to the air-flow that flows into.And even fan rotates to more than the 1000rpm, the protrusion 137 rear side fields as the blade 133 of the initial part that flows into of air that also can prevent produce the phenomenon of eddy current.

That is, spiral fan 13 blades 133 of present embodiment have (tip) incision is sold in the inside portion that contacts from the bottom with axle center 132 to the outside form.Along with the medial surface thickness attenuation of the part of cutting, because the air-flow that flows into from this part might produce vibration and noise.But, by air-flow inflow portion edge protrusion 137 is set in blade 133 bottoms, can prevent eddy current, make the boundary layer attenuation, therefore can bring into play the action effect that noise-decreasing and vibration produce.

In addition, the surface of the back of spiral vane 133 of the present invention is formed with several the little indentures (dimple) 138 as the groove that is formed at golf.The effect of above-mentioned several indentures 138 is: reduce the eddy current that produces later by blade.

That is, because the effect of above-mentioned indenture 138, when the lower side turbulization phenomenon of the back of blade, fluid can be obscured together more fully mutually, therefore till air breaks away from blade, will the phenomenon of the flow direction change of air can not occur.So, owing to can reduce the form drag of blade 133, therefore can noise-decreasing.

The shape of above-mentioned indenture 138 is circular in the present embodiment, but can be pentagon, quadrangle also, approach circular multiple shapes such as polygonal.And,, therefore when design, to take into full account above-mentioned factor because shape and number, the degree of depth of indenture, the diameter of indenture of indenture all have considerable influence to form drag.Generally speaking, indenture is many more just favourable more to reducing eddy current, but also not all is so sometimes.

In addition, the spiral fan 13 of present embodiment also should with due regard to be formed at the global pattern of indenture 138 of the back of blade 133, therefore can make the intervals of row and/or row identical or different along the length direction of blade 133.

As a reference, flowing of fluid will be divided into Laminar Flow and turbulent flow according to Reynolds number (Reynolds).And, be provided with indenture in the back of blade.Here, the resistance that produces in order to reduce the pressure differential that acts on the blade front and rear surfaces, Reynolds number should maintain between 40,000 to 400,000.If Reynolds number is bigger or little than the value of this scope, instead can make overall resistance become big.

In addition, the mid portion level in above-mentioned axle center 132 is formed with connecting plate 134, and the effect of above-mentioned connecting plate 134 is: the terminal part that is used for fixing the rotating shaft 12a that combines with motor shaft.In order to strengthen intensity, it is flat substantially that above-mentioned connecting plate 134 forms central portion, and the outside portion is the curve form of lateral bending song upwards then.

Therefore in addition, a plurality of ribs 135 of the upper side of above-mentioned connecting plate 134 and the integrally formed oriented radial prolongation of bottom surfaces can strengthen the intensity of connecting plate 134 more.Above-mentioned ribs 135 should be symmetrically formed in the upper side and the bottom surfaces of connecting plate 134, and laterally height increases gradually from the inboard.

In addition, above-mentioned 2 above-mentioned blades 133 are formed at the position of mutual correspondence.But also can make blade more than 2 towards the circumferencial direction formation that keeps at a certain distance away.Can in embodiment described later, describe for this structure.

The flow channel of the spiral fan 13 of the present embodiment of Gou Chenging is as follows as mentioned above: along with the rotation of spiral fan, after the air of fan lower side will flow into the entrance side of blade 133 lower ends, along the axle center 132 and blade 133 flow towards direction of principal axis, thereby can discharge by the outlet side of upper end.

In addition, the outside of above-mentioned spiral fan 13 is provided with the open columnar pilot hole 15 in upper end and bottom with the form around the outside of spiral fan 13.The effect of above-mentioned pilot hole 15 is: during rotation wind pushing air by spiral fan 13, improve static pressure, and be with the passage of a large amount of wind by a certain amount of air-supply.

To shown in Figure 7, above-mentioned pilot hole 15 should be integrally formed as Fig. 6, and is the center with rotating shaft 12a, and left and right sides probably is the form of symmetric figure.Each corner part then is close to the internal face setting of housing 10.

The mid portion of above-mentioned pilot hole 15 probably forms linear, and the bottom that passes air into and discharge and upper end constitute gradually the enlarged portion of expansion laterally.

Above-mentioned each enlarged portion should have the form with certain curvature bending.Here, the inlet portion radius of curvature of above-mentioned pilot hole 15 should be greater than export department's radius of curvature.

In addition, as shown in Figure 7, the lateral surface of above-mentioned pilot hole 15 is provided with in order to utilize covibration to draw the resonator 151 of the ripple of CF.The effect of above-mentioned resonator 151 is: the noise that can lower the specific frequency area that produces owing to the distolateral vortex of fan inlet.

That is, because the eddy current of the lower side of pilot hole 15 will produce noise, measure above-mentioned noise at pilot hole 15 lateral surfaces, above-mentioned noise has different frequency characteristics in each position.Given this,, the resonator corresponding to noise properties is set, then can lowers the noise of this frequency field in the position that the noise of specific frequency area produces.

According to the position difference is set, the size of above-mentioned resonator is also different.This be because: the frequency wave spectrum by analyzing each position, the pilot hole outside is everybody buy property frequency difference of living noise as can be known, and, according to frequency characteristic with different size design resonators.

With reference to Fig. 8, according to laterally, vertically, the frequency field of height and inlet length and inlet diameter decision resonator 151 current resonance of wanting.Therefore, as long as the above-mentioned design considerations of suitable regulation designs resonator 151, just can effectively lower the noise of specific frequency area.

Fig. 9 is that the position that shows the generation noise of specific frequency area is suitable for the chart that noise under the situation of resonator lowers effect, is before comparison resonator 151 is suitable for and the chart of the noise level after being suitable for.

In addition, in case be close to sound-absorbing material (not prompting among the figure), then shown in the chart of Figure 10, can realize that the noise in the wider zone lowers effect in resonator 151 inside.At this moment, can use mineral wool or sponge and fabric materials such as (fabric) as above-mentioned attractive material, and with one of them or more than two the combination form be arranged at resonator 151 inside.

In addition, Figure 11 shows to be used to prevent the air-flow of discharging from the spiral fan 13 reference oblique view to air guiding device 19 structures of the adverse current (backflow) of central part and noise-decreasing.Spiral fan 13 upper spaces of air-conditioner of the present invention are provided with the air guiding device 19 of box form.Here, the effect of above-mentioned air guiding device is: from above-mentioned spiral fan to the air-flow that circumferencial direction is discharged be discharged to discharge top cover 20 before, keep flowing of air-flow all the time.

That is, will discharge to the 45 degree from the air that spiral fan 13 is discharged, and flow towards circumferencial direction, therefore very fast in the air current flow in the outside, medial side does not then almost have air current flow.

Therefore, under the situation that air guiding device 19 is not set, will produce serious eddy current in the space that is discharged to before discharging top cover 20, so can not rise in the speed of the air-flow of flows outside, instead can produce the phenomenon of the part of air-flow, thereby produce the stream loss to the mid portion adverse current.

Given this, air-conditioner of the present invention is provided with the air guiding device 19 that makes stream be maintained the outside.Here, the corner chamfering of above-mentioned air guiding device 19 forms, and be the box-shape of hollow, therefore can reduce the stream that the air-flow adverse current in flows outside causes to the centre and lose.

In addition, in case air guiding device 19 is set, can reach the effect that reduces above-mentioned stream loss.But, because will there be certain space in the flow interval between spiral fan 13 and the air guiding device 19 between the two, so the uncontrollable phenomenon that is present in the discharge air in above-mentioned space to the central part adverse current.So the bottom surfaces central part at air guiding device 19 among the present invention is provided with cone guide device (guide of cone shape) 190, thereby can prevent from the adverse current of above-mentioned space to the fan central part.

Promptly, because the space between spiral fan 13 and the above-mentioned air guiding device 19 is provided with cone guide device 190, therefore the air of discharging from fan will collaborate with outer sidewind owing to the guiding function of cone guide device 190, thereby rise to discharging top cover 20 directions smoothly.

Above-mentioned cone guide device 190 preferably forms truncated conical shape, even it is also harmless to form cone shape.In addition, even be arranged to not be that the cylindrical guide device of taper also almost can reach same effect.

In addition, above-mentioned air guiding device 19 also has muffler (muffler) effect of noise-decreasing.Its principle is: with noise from tubule to the diffusion of wide space, thereby make the principle of the expansion type muffler that sound diminishes.

Therefore, the top and bottom of air guiding device 19 of the present invention are formed with suction inlet 191 and outlet 192.Here, the stream basal area of above-mentioned suction inlet 191 and outlet 192 is than the flowpath segment area of air guiding device inner space little (top outlet is with reference to Figure 13).

Therefore, air-conditioner of the present invention can utilize the muffler effect of air guiding device 19 to lower blade transmission frequency (the BPF:Blade Passing Frequency) noise that specific frequency area produces.

In addition, if muffler is set in the general pressure fan then can reduces blast, but air-conditioner of the present invention has been suitable for spiral fan 13, after the discharge air is discharged with the 45 degree, flow towards circumferencial direction, therefore blast will not reduce phenomenon so can not produce blast mainly to air guiding device 19 outsides effect that has the muffler effect concurrently.On the contrary, air guiding device 19 mid portions can be accommodated noise.

Figure 12 is used to illustrate utilize above-mentioned air guiding device of the present invention 19 to carry out the reference diagram of the principle of noise reduction.Usually inlet basal area and the inner section difference between long-pending is big more, and noise lowers effect and just rises, so the length of muffler and basal area are than the key factor that is noise attenuating performance.

Figure 13 is the oblique view that shows another embodiment that discharges top cover 20 and air guiding device 19, is when showing that discharging top cover 20 can pass through gathering sill 195 liftings of air guiding device 19, can also reach the drawing of the structure of muffler effect.

If air guiding device 19 is only to be formed with gathering sill 195, and discharge the structure of top cover 20, then can not reach sufficient muffler effect by gathering sill 195 liftings.But as shown in figure 13, replace making the structure of discharge top cover 19 by gathering sill 195 liftings, at above-mentioned gathering sill 195 the anti-leak parts (not prompting among the figure) that can prevent air and leak are set, therefore can in performance muffler effect, also can make and discharge top cover 20 liftings.

The form of above-mentioned anti-leak parts can be both to have made guide post 201 liftings of discharging top cover 20, the curtain form of tearing mid portion again for the part of covering guide post 201 processes, or have elastic force and compact brush (brush) form that is provided with.

In the above description, the drive unit and the power transmission that are used for lifting discharge top cover 20 can be ball-screw (ball screw) modes of utilizing drive motors, or multiple mode such as guide rail and pinion structure.At this moment, the lifting guiding device of discharge top cover 20 also can have multiple structure, specifying and illustrating and will omit it.

In addition, Figure 14 is the drawing that shows the structure of motor fixture 18.Motor fixture 18 according to the embodiment of the invention is to be made of following components: the electric machine support installation portion 181 of the circular configuration that possesses for fixed electrical machinery support 21; Prolong 4 brace table 184a-184d that form to 4 directions from above-mentioned electric machine support installation portion 181; Interconnect the external frame 185 of the outboard end of above-mentioned brace table 184a-184d.

In addition, the electric machine support installation portion 181 of motor fixture 18 is connected with electric machine support 21.Here, above-mentioned electric machine support 21 possesses the motor connecting portion 212 of the multi-segment structure that the direction of principal axis of oriented motor prolong to form.That is, electric machine support 21 is between drive motors 12 and motor fixture 18.

In addition, when seeing above-mentioned motor fixture 18 in the above, electric machine support installation portion 181 and brace table 184a, 184b, 184c, 184d and external frame 185 are quadrangle.

Be formed with the connecting hole 181a that is used to connect attaching parts on the face of above-mentioned electric machine support installation portion 181.Above-mentioned motor fixture 18 is to be made by the iron plate material than the thin thickness of above-mentioned electric machine support 21, and therefore 181 of the electric machine support installation portions of above-mentioned motor fixture 18 are gone up and are formed with welding bead (bead) 181b that is used to strengthen intensity with the cross form.

In addition, above-mentioned electric machine support installation portion 181 and brace table 184a-184d and external frame 185 possess to have for the vertical intensity of horizontal plane and strengthen with rib 188.

In addition, the electric machine support 21 that is installed on electric machine support installation portion 181 possesses the motor connecting portion 212 with multi-segment structure is arranged.The bottom surface of above-mentioned electric machine support 21 is formed with the cruciform vent 211 corresponding to the cross weld bead shape of above-mentioned electric machine support installation portion 181.

In addition, the hole that is formed at the bottom surface of electric machine support 21 is the cross form.Each terminal part of cruciform vent 211 is provided with the damping rubber (damping rubber) 183 that EP rubbers (EPDM:ethylene propylene rubber) or oil-extended styrene buadiene rubber (SBR:styrene butadiene rubber) are made.

Above-mentioned damping rubber 183 integral body are the long ball shape, and central authorities are formed with the through hole that attaching parts are passed through.

In addition, above-mentioned damping rubber 183 utilizes forces the mode that is pressed into to be arranged at the gabarit of cruciform vent 211, thereby can suppress to be delivered to the vibration that the driving owing to motor of motor fixture 18 causes.

And the motor connecting portion 212 of above-mentioned multi-segment structure is formed with connecting hole 212a, and above-mentioned connecting hole 212a is corresponding to the connecting hole 120a that prolongs the feet 120 that forms to motor 12 bottoms.

The drive motors installation process of the air-conditioner of the present invention of Gou Chenging is as follows as mentioned above.

At first, damping rubber 183 is inserted the circular port part of cruciform vent 211 ends of the bottom surface formation that is incorporated into electric machine support 21.

Then, electric machine support 21 is installed on the electric machine support installation portion 181 of motor fixture 18 after, attaching parts such as connecting screw connect damping rubber 183, thereby electric machine support 21 is fixed in motor fixture 18.

Then, make again to each feet lower surface that drive motors 12 downsides prolong to form with the identical state of the drop face of electric machine support 21 under, the feet that attaching parts will connect drive motors 12 reaches the connecting hole of the connecting portion formation of corresponding therewith electric machine support 21, thereby drive motors 12 can be fixed on the electric machine support 21.

According to aforesaid motor fixture structure of the present invention, can make the spacing optimization between spiral fan 13 and the motor fixture 18, thereby can reach the effect that reduces aforesaid BPF (BladePassing Frequency) noise.

Promptly, in motor fixture structure of the present invention, the feet of drive motors 12 is not to the horizontal direction bending, but be connected on the electric machine support 21 under the vertical state being in, therefore can make spiral fan 13 and feet in the horizontal direction to greatest extent away from, thereby can avoid to greatest extent between above-mentioned feet and the fan end because the noise that rubs and produce.

Moreover, because the feet 120 of drive motors 12 is in plumbness (that is, not to the horizontal direction bending), so the bottom surface height of drive motors 12 is with rising h.Here, above-mentioned h, the height h (with reference to Figure 14) that its value equals the faulting of slab ends part of fixed electrical machinery support 21 (in the original text is: 14b).Therefore, reserved sufficient space at the fan downside.Therefore, can in wider frequency range, reduce BPF (Blade Passing Frequency) noise.

In addition, according to aforesaid motor fixture 18 structures of the present invention, the electric machine support installation portion 181 of the circular configuration that possesses for fixed electrical machinery support 21 forms and drive motors 12 circle of area much at one, therefore area is minimized, thereby in the process that flows into spiral fan 13, can make the minimum interference of motor fixture to air-flow.And, can lower the noise that interference in air flow causes.

Here, for the vibration that reduces to produce when above-mentioned drive motors 12 drives, also can be vertically installed with the absorption of vibrations packing material (not prompting among the figure) of rubber or synthetic resin material between feet 120 medial surfaces of above-mentioned drive motors 12 and motor connecting portion 212 lateral surfaces of electric machine support 21.

With reference to Fig. 4, Fig. 5 and Figure 14, be provided with the vibration isolation parts 22 of the abnormal sound phenomenon that is used to prevent that high frequency waves from causing between the rotating shaft 12a of the drive motors 12 of air-conditioner of the present invention and the fan combination portion.

Illustrate that the noise production process is as follows.In case the high frequency waves as the sine wave of the integer multiple frequency of fundamental frequency enter motor, will produce little shaking (microseism), so motor shaft will be shaken slightly.And, if the centre does not have the vibration isolation parts, but directly motor shaft is connected with fan, then, can produce abnormal sound because the vibration of motor shaft is delivered to fan.Therefore, the integral multiple that is equivalent to fundamental frequency 60Hz 120,280,360,420Hz, abnormal sound will sharply rise, particularly noise will reach peak value when 480Hz.

The present invention such as Fig. 4 and Fig. 5 and shown in Figure 15, in the joint portion of the rotating shaft 12a in the axle center of spiral fan 13, top and the bottom are provided with the vibration isolation parts.Here, the vibration isolation parts are that the central portion by non-geometric circular is formed with the metal washer of through hole 221a 221, and the rubber 222 that is formed with metal washer accepting groove 222b and axle through hole 222a constitutes.Therefore can prevent the phenomenon of the vibration isolation parts idle running that the rotation of motor shaft and fan causes, and can effectively cut off vibration transmission, thereby can prevent the abnormal sound that high frequency waves cause to fan.

Here, what above-mentioned rubber 222 was suitable for is: chemical characteristic is stable, and the EPDM (ethylenepropylene rubber) that has the middle character of natural rubber and SBR (styrene butadiene rubber) on the physical characteristic.Above-mentioned rubber 222 possesses following several sections and constitutes: the shaft sleeve part that is inserted in axle center 132 central portions of spiral fan 13; At above-mentioned shaft sleeve part one end, protrude the flange part of formation in order to possess the accepting groove of accommodating non-circular metal washer 221.

In addition, the reason why above-mentioned non-circular metal washer 221 will be set is: if the vibration isolation parts only are made of rubber 222, and the phenomenon of rubber 222 idle running when the rotation of motor shaft and fan then can take place.

That is, be not provided with at the connecting plate central portion under the state of metal washer 221, because rotating shaft 12a carries air when rotating at a high speed, the central portion that therefore connects the connecting plate 134 of above-mentioned rotating shaft 12a can wear and tear.And, the inner peripheral surface bending of connecting plate 134 central portions that produce during owing to the injection mo(u)lding Air Blast fan, so rotating shaft 12a is when rotated, axle center 132 can slightly be shaken, thereby increases noise.And,, then, therefore when high frequency waves are imported, can produce abnormal sound because the vibration of electric machine rotational axis 12a is directly transmitted if metal washer only is set.

But, according to the present invention, because the top and the bottom side of above-mentioned connecting plate 134 is provided with the vibration isolation parts that are made of non-circular metal packing ring 221 and rubber 222, therefore when rotating shaft 12a rotates at a high speed, can prevent the phenomenon of the vibration isolation parts idle running that the rotation of motor shaft and fan causes.And, can effectively cut off vibration transmission to fan, therefore can prevent the abnormal sound that high frequency waves cause.

In addition, above-mentioned vibration isolation parts all are set in the top and the bottom of above-mentioned connecting plate 134 side, more favourable to preventing abnormal sound, but only be arranged on a side, also can give full play to above-mentioned performance.

Figure 16 is the reference chart that shows the effect of the vibration isolation parts that are suitable for Figure 14.By being suitable for EPDM rubber up and down, can lower at the caused abnormal sound of the high frequency waves of 480Hz peak value in fan connecting part.

Figure 17 a and Figure 17 b are used to show the drawing of the outlet cell structure of discharging top cover, and wherein, Figure 17 a shows the oblique view of discharging the state before top cover rises; Figure 17 b shows the oblique view that exposes state of discharging after top cover rises.Discharge top cover 20 of the present invention generally shown in Figure 17 a, before air-conditioner drives, is discharged top cover 20 and is hidden in housing 10 inside, and when air-conditioner drives, shown in Figure 17 b, then rise to the degree that top cover 20 exposes of discharging.

For this reason, in the air-conditioner of the present invention, discharge top cover 20 and connect sliding eye (193 :) the liftable setting that air guiding device 19 mid portions form with reference to Figure 13, therefore when the discharge top cover lifting that is arranged at air guiding device 19 outsides drive motors (not prompting among the figure) driving, above-mentioned discharge top cover will be by above-mentioned sliding eye 193 guiding liftings.

In addition, Figure 17 a and Figure 17 b carry showing and discharge the air-conditioner that is formed with top grid 200 above the top cover 20.Under said structure,, when driving, air-conditioner also can discharge air even without the rising of discharging top cover 20.That is, under the situation of the state operation a little less than air-conditioner is with air output, can use the top grid.

Figure 18 is the reference chart that shows the effect when being suitable for the top grid.By additional on existing discharge top cover top grid 200 is set, has the effect that can lower the noise under the same flow.

In addition, in the embodiment of above-mentioned air-conditioner, above-mentioned housing 10 can form the cuboid form as common air-conditioner.But consider the form of spiral fan 13, also housing 10 can be formed cylindrical shape.In this case, not only can dwindle the size of housing 10 integral body, and in design level, can improve aesthetic performance with respect in the past air-conditioner.

The driving of the air-conditioner of the present invention of Gou Chenging is as follows as mentioned above.

The user begins to drive air-conditioner, and usually the off-premises station (not prompting among the figure) of the outside that is become by compressor and condensing mechanism will be supplied with refrigerants to above-mentioned both sides heat exchanger 11, because the driving of drive motors 12, spiral fan 13 also will begin rotation.

Along with the rotation of above-mentioned spiral fan 13, air will flow into by the air duct 100a of housing 10 downsides.Leaked-in air will be cooled through heat exchanger 11 time like this, flow with direction of principal axis to top from the bottom of spiral fan 13 then.

At this moment, the air of pilot hole 15 flows into and the top of outflow and the structure that lower side is expansion, and air is carried out smoothly to the inflow and the outflow of spiral fan 13.

Particularly, the top and the bottom side of above-mentioned pilot hole 15 is wide, and is middle then be the form of depression, and therefore, the going into of spiral fan 13, outlet side will produce pressure differential, owing to above-mentioned pressure differential can augmented flow.

By the air of above-mentioned spiral fan 13, will be discharged to by the air duct 100b of housing 10 upsides indoor, thereby carry out cold-room operation with required temperature to indoor.

Utilizing aforesaid air-conditioner to carry out under the situation of greenhouse operation, making the contrary circulation of freeze cycle, and making the condensing machine effect that indoor heat exchanger performance has exothermic effects that is arranged at, thus with the air of heating to indoor discharge.

Below, will the spiral fan according to other embodiment applicable to air-conditioner of the present invention be described.

Figure 19 is the oblique view of the 2nd embodiment that shows the Air Blast fan of the air-conditioner be applicable to Fig. 2.Spiral fan 23 according to embodiments of the invention is to be made of following components: secure bond is in the axle center 232 of the oval tubular of the vertical rotating shaft 12a that combines rotation with drive motors 12; Outer peripheral face in above-mentioned axle center 232, an end of 232 forms along the direction of principal axis distortion to the other end from the axle center, and its lower-upper length will grow 3 blades 233 of certain-length with respect to the vertical length in axle center 232.

In addition, above-mentioned blade 233 has the form of selling (tip) incision from the inside portion that contacts with the bottom in above-mentioned axle center to the outside of bottom.Therefore, the bottom of above-mentioned blade 233 probably is sharp triangle form.

In addition, the angle that the blade 233 in the time of will observing fan on top rotates from the beginning to the end is called blade anglec of rotation α.In the present embodiment, the blade anglec of rotation of spiral fan 23 probably is 150 °.At this moment, see in the plane that blade 233 can not overlap and disturb the corresponding blade 233 that is formed at opposite side.

That is, the blade anglec of rotation α of each blade 233 of spiral fan 23 of the present invention probably forms 150 °, and here, the above-mentioned blade anglec of rotation is the maximum angle that a blade is drawn to circumferencial direction.Therefore, both had the blade anglec of rotation more than 120 °, the processability in order to make is good again, forms the structure that does not have overlapped and the field of disturbing.

In addition, it is 150 ° that blade anglec of rotation α increases, and then the air angle of outlet of discharging also will become greatly, so is 120 ° situation with respect to the blade anglec of rotation, will lower at the noise of blade end portion.

In addition, in the spiral fan 23 of present embodiment, the value of being got as the spiral index (Helix index) of the value of the torsion angle of the axis direction in the axle center 233 of blade 233 is the value in 1.8 to 2.2 scopes.The value that the spiral index is got is 2.That is, the spiral index is big more, just means that the axis in the more close axle center of blade tilts, and can make air more to the axis direction effect like this, therefore can increase air output.

In addition, in case the spiral index becomes greatly, the friction noise with air in same rotation number can increase slightly, but can increase air output.And do not increasing air output, only keeping under the situation of same air output, can have the small rotation number, therefore in the present embodiment, having the attenuating motor noise equally, and then can not increase the effect of the noise of entire system.

In addition, in the spiral fan 23 of present embodiment, D is compared in the axle center _h/ D _bBe defined as: the diameter D of blade 233 _bDiameter ratio to axle center 232 also is set at 0.5 with the axle center ratio, therefore can make the blast of spiral fan and air quantity the best.

In addition, above-mentioned blade 233 increases angle from entrance side gradually to outlet side, makes angle of outlet θ e greater than inlet angle θ i.

Special needs to be pointed out is, according to experimental result, under identical conditions, when the inlet angle θ i of above-mentioned blade 233 probably is 35 °, the noise minimum.This be because: the inlet angle θ i of blade 233 and probably almost consistent, so the turbulent flow generation is minimized at the streamline (stream line) of the incidence angle of 35 ° of leaked-in airs.

In addition, above-mentioned angle of outlet θ e forms 45 °, so after the discharge air is discharged with the 45 degree, flows along circumferencial direction.

In addition, the amplitude direction section of above-mentioned each blade 233 probably is " S " type, or the cut-off rule form of Tai Ji printed words.And, preferably from the upper side end of blade 233 to the lower side end, its section opens gradually, and approaches the simple rounding top and bottom pattern of straight line.In this case,, has following effect: flow into smooth and easyly at the air of entrance side owing to can make, and can concentrate behind above-mentioned entrance side leaked-in air at outlet side and to discharge, therefore can improve the static pressure of discharging air as aforesaid embodiment.

In addition, when 1: 1.5 level, vibration characteristics is good than th: tb for the thickness of above-mentioned axle center 232 and blade 233.

The thickness difference of above-mentioned blade 233, the thickness that wherein makes the close part in axle center 232 vibration characteristics greater than with axle center 232 pin (tip) part far away the time is fine.This be because: by mind-set radial direction inboard in the weight of blade 233 is induced, can dwindle the moment (moment) that Air Blast fan when rotation produces, thereby reduce vibration.

In addition, the spiral fan 23 of present embodiment is formed with the rib 236 that plays tendon (tendon) effect along the length direction of blade for blade 233 in the back of blade 233.

Above-mentioned rib 236 forms the length more than at least 1/3 of blade 233 length, and is benchmark with the centre of blade amplitude, at the position close with pin, forms identical with the blade twist direction or similar structure.

For lightening, the thickness that makes spiral fan makes under the situation of thickness attenuation of blade 233, because the blade shake will produce noise during rotation, at this moment, the rib 236 that is formed at above-mentioned blade 233 back can reinforced blade 233 integral intensity, thereby can prevent above-mentioned noise.And above-mentioned rib also has the effect that prevents with the miscellaneous part resonance that constitutes air-conditioner.

In addition, the inlet portion side that flows into of the air-flow of above-mentioned blade 233 bottoms is formed with the protrusion 237 with respect to other position protuberances.Above-mentioned protrusion is same as the rib 236 of the back that is formed at above-mentioned blade 233, also has to prevent that blade 233 is owing to flowing into the phenomenon that air-flow is shaken.And the protrusion 237 rear side fields as the blade 233 of the initial part that flows into of air that can prevent produce the phenomenon of eddy current.

That is, the blade 233 of the spiral fan 23 of present embodiment has (tip) incision is sold in the inside portion that contacts from the bottom with axle center 232 to the outside form.Along with the medial surface thickness attenuation of the part of cutting, because the air-flow that flows into from this part might produce vibration and noise.But, by air-flow inflow portion edge protrusion 237 is set in blade 233 bottoms, can prevent eddy current, make the boundary layer attenuation, therefore can bring into play the action effect that noise-decreasing and vibration produce.

In addition, the surface of the back of spiral vane 233 of the present invention is formed with several the little indentures (dimple) 238 as the groove that is formed at golf.The effect of above-mentioned several indentures 238 is: reduce the eddy current that produces later by blade 233.

That is, because the effect of above-mentioned indenture 238, when the lower side turbulization phenomenon of the back of blade, fluid can be obscured together more fully mutually, therefore till air breaks away from blade, will the phenomenon of the flow direction change of air can not occur.So, owing to can reduce the form drag of blade 233, therefore can noise-decreasing.

The shape of above-mentioned indenture 238 can be pentagon, quadrangle, approach the multiple shapes such as polygonal of circle.And,, when design, to take into full account above-mentioned key element therefore as aforesaid embodiment because shape and number, the degree of depth of indenture, the diameter of indenture of indenture all have considerable influence to form drag.

In addition, the spiral fan 23 of present embodiment also should with due regard to be formed at the global pattern of indenture 238 of the back of blade 233, therefore can make the intervals of row and/or row identical or different along the length direction of blade.

Figure 20 is the oblique view of the 3rd embodiment that shows the Air Blast fan of the air-conditioner be applicable to Fig. 2, is the drawing that shows the Air Blast fan of the long ball oblique crank Z heart that has been suitable for intermediate elongated in order to lower BPF (Blade Passing Frequency) noise.

In this case, equally also can be useful in the aforesaid the 1st and the inscape that is suitable for of the spiral fan of the 2nd embodiment.

That is, the back side of the blade of the spiral fan of foundation the 1st and the 2nd embodiment is formed with indenture and rib etc., and the air inflow portion edge of blade also is formed with the protrusion with respect to other position protuberances.Even not prompting on drawing, but the spiral fan of present embodiment 33 also can be suitable for these inscapes.

In addition, the spiral index or the blade anglec of rotation can adopt the inscape of aforesaid embodiment too.

In addition, above-mentioned inscape, for example possess protrusion in the indenture of vacuum side of blade or rib, blade inlet portion side protuberance, spiral index, the size of the blade anglec of rotation is set at greater than 360 ° of reflection technological thoughts of the present invention such as angle divided by the number of blade, and equally also go for Air Blast fan in the following examples (the 4th embodiment to the 12 embodiment) according to the technical pattern that the characteristic of aforesaid each embodiment is suitable for.And, repeatedly, be applicable to the situation of the following examples in the explanation for above-mentioned inscape, might omit the prompting of explanation and drawing.That is, the basic thought of the 1st and the 2nd embodiment might intactly be applicable to other embodiment.

Figure 21 is the oblique view of the 4th embodiment that shows the Air Blast fan of the air-conditioner be applicable to Fig. 2.

Present embodiment is the structure that shows the Air Blast fan 43 that has been suitable for truncated cone-shaped axle center 432.In this case, because it is more little to sidle diameter to the top in axle center more, therefore can fully widen the upper side blade amplitude of blade 433.

That is, be columnar situation with respect to the axle center, the upper side diameter in the truncated cone-shaped axle center 432 of present embodiment is little, even therefore the upper side amplitude of blade 433 becomes big, the integral diameter of Air Blast fan also can be designed as identical size.

Figure 22 is the oblique view of the 5th embodiment that shows the Air Blast fan of the air-conditioner be applicable to Fig. 2.Figure 23 is the plane that shows Figure 22.Figure 24 is the front elevation that shows Figure 22.Figure 25 is the side view that shows Figure 22.What present embodiment showed is to utilize thermal welding to form the situation of the spiral fan 53 of multi-segment structure.

That is, in this embodiment,, used the spiral fan with the described homomorphosis of the 1st embodiment, and under stacked two state, the portion of hot welding that is in contact with one another has been formed as one as the Air Blast fan that is used for wind pushing air.

Here, the spiral fan of above-mentioned multi-segment structure is 2 segment structures with 4 blades 533, but also can constitute structure more than 3 sections or 3 sections.The spiral fan 53 of present embodiment is very favourable for improving static pressure.

In addition,, then can cause making becoming complicated, and can cause the system dimension of the air-conditioner of suitable Air Blast fan to become big, therefore should adopt suitable hop count if the hop count of Air Blast fan is too much.

Figure 26 is the oblique view of the 6th embodiment that shows the Air Blast fan of the air-conditioner be applicable to Fig. 2.Figure 27 is the plane that shows Figure 26.Figure 28 is the front elevation that shows Figure 26.Figure 29 is the side view that shows Figure 26.Utilize thermal welding to form the spiral fan 63 of multi-segment structure in the present embodiment, and in order to lower BPF (Blade Passing Frequency) noise, the blade anglec of rotation is formed angle less than aforesaid the 5th embodiment.

That is, in the present embodiment,, used and the identical spiral fan of the described type of the 5th embodiment as the Air Blast fan that is used for wind pushing air.And because BPF (Blade Passing Frequency) noise is relevant with the blade anglec of rotation, therefore use and dwindled the spiral fan of the blade anglec of rotation, under the state of the spiral fan of stacked two said structures, the portion of hot welding that is contacted with axle center 532 is formed as one then.

Figure 30 is the oblique view of the 7th embodiment that shows the Air Blast fan of the air-conditioner be applicable to Fig. 2.Figure 31 is the plane that shows Figure 30.Figure 32 is the front elevation that shows Figure 30.Figure 33 is the side view that shows Figure 30.Figure 34 is the exploded perspective view that shows Figure 30.

In the present embodiment, be different from the spiral fan of the 5th and the 6th embodiment of the multi-segment structure that utilizes the thermal welding making, possess 4 blade 733a, 733b with assembly type, thereby provide spiral fan 73 with multi-segment structure by blade 733a, 733b.

Promptly, in the present embodiment, BPF (Blade PassingFrequency) noise that produces when being 2 in order to lower blade, adopted the structure that possesses 4 blade 733a, 733b, and replacement thermal welding, can structurally assemble, so present embodiment provides the 4 blade shaped helical fans that production significantly improves.

For this reason, as shown in figure 34, the spiral fan 73 of present embodiment is to be made of main spiral fan 73a and auxilliary spiral fan 73b.Be formed with the insertion groove 739a of the blade support chip 739b that inserts the auxilliary spiral fan 73b of assembling on the main core 732a circumference of main spiral fan 73a.The blade support chip 739b inboard of above-mentioned auxilliary spiral fan 73b is formed with the subaxial 732b that interconnects both sides blade support chip.

In addition, in order to lower BPF (Blade Passing Frequency) noise, the blade anglec of rotation of the blade 733b of above-mentioned auxilliary spiral fan 73b forms the little angle of the blade anglec of rotation with respect to the blade 733a of aforesaid main spiral fan 73a.

Here, be easy to learn by Figure 33, with respect to the structure of only dwindling the blade anglec of rotation among the primary blades 733a of main spiral fan 73a, in the present embodiment, the length of the blade of auxilliary spiral fan 73b and the whole height of the blade on the direction of principal axis of axle center also will change, so the spiral index also is different from the index of primary blades 733a.

Special needs to be pointed out is the direction of principal axis length that the blade 733b bottom of auxilliary spiral fan 73b does not break away from main core 732a in the present embodiment.

The spiral fan 73 of the present embodiment of Gou Chenging is finished assembling by following process as mentioned above: the blade support chip 739b of subaxial 732b is pushed combination in the insertion groove 739a of main core 732a.

Figure 35 is the oblique view of the 8th embodiment that shows the Air Blast fan of the air-conditioner be applicable to Fig. 2.Figure 36 is the front elevation that shows Figure 35.Present embodiment provides blade 833 gabarits that are formed at axle center 832 outer peripheral faces to be close to the Air Blast fan 83 of the cylindrical housing 835 of hollow structure.

That is, in the present embodiment,, used spiral fan with the described homomorphosis of the 1st embodiment as the Air Blast fan that is used for wind pushing air.And, utilize thermal welding to be close to blade 833 gabarits or integrally formed cylindrical housing cylindrical housing 835, therefore can lower the BPF noise between fan end and the pilot hole 15.

Figure 37 is the oblique view of the 9th embodiment that shows the Air Blast fan of the air-conditioner be applicable to Fig. 2.Present embodiment provides when injection mo(u)lding, and the number that is formed at the blade 933 of axle center 932 outer peripheral faces is made as 4 spiral fan 93.

Figure 38 is the oblique view of the 10th embodiment that shows the Air Blast fan of the air-conditioner be applicable to Fig. 2.Present embodiment provides when injection mo(u)lding, and the number that is formed at the blade 1033 of axle center 1032 outer peripheral faces is made as 5 spiral fan 103.

Figure 39 is the oblique view of the 11st embodiment that shows the Air Blast fan of the air-conditioner be applicable to Fig. 2.Present embodiment provides when injection mo(u)lding, and the number that is formed at the blade 1133 of axle center 1132 outer peripheral faces is made as 7 spiral fan 113.

Figure 40 is the oblique view of the 12nd embodiment that shows the Air Blast fan of the air-conditioner be applicable to Fig. 2.Present embodiment provides when injection mo(u)lding, and the number that is formed at the blade 1233 of axle center 1232 outer peripheral faces is made as 11 spiral fan 123.

That is, Figure 37 to Figure 40 shows is the Air Blast fan that makes under the multiple situation that the blade number has nothing in common with each other.With reference to accompanying drawing as can be known, the number of blade and shape can be diversified.

Special needs to be pointed out is, according to experimental result as can be known, under identical conditions, increase the number of blade, then reduce the height in axle center, more help making noise-decreasing under the not affected prerequisite of air quantity and static pressure characteristic.

Therefore, under the situation of the Air Blast fan of each embodiment that is suitable for aforesaid increase blade number, can produce and have high air quantity and high static pressure characteristic, and can dwindle the succinct goods of air-conditioner height, and can make goods group variation.

In addition, under the situation of the Air Blast fan that is suitable for the foregoing description, the housing 10 of air-conditioner can constitute various forms such as cuboid or cylindrical shape.

Right of the present invention is not confined to aforesaid embodiment, but is decided by the record in claims.Under the situation that does not exceed the technology of the present invention scope of putting down in writing in claims, the operator of relevant industries can carry out various deformation and modification to it.

Claims (40)

1, a kind of air-conditioner is characterized in that, comprising:

Be formed with the housing of the air duct of a plurality of suctions and discharge air;

Be arranged at the heat exchanger in the above-mentioned housing;

Spiral fan to the vertical direction of principal axis forced air supply air of housing comprises: columnar axle center and at a plurality of spiral vanes of the outer peripheral face in above-mentioned axle center, and above-mentioned blade forms with helical twist towards direction of principal axis from the end to end in axle center;

Be arranged at the bottom of above-mentioned spiral fan, rotate the drive motors of spiral fan to a direction;

Be arranged at above-mentioned spiral fan upper side, guide the air flow air guiding device of discharging laterally from spiral fan.

2, air-conditioner according to claim 1 is characterized in that:

Above-mentioned air guiding device is with the box-shape of corner chamfering for stream being maintained the outside.

3, air-conditioner according to claim 1 is characterized in that:

Above-mentioned air guiding device is with the box-shape of corner chamfering and hollow for stream being maintained the outside.

4, according to claim 2 or 3 described air-conditioners, it is characterized in that:

The bottom surfaces central part of above-mentioned air guiding device is provided with and prevents from the cone guide device of the space between spiral fan and the air guiding device to the adverse current of fan central part.

5, air-conditioner according to claim 4 is characterized in that:

Above-mentioned cone guide device is cone shape or truncated conical shape.

6, according to claim 2 or 3 described air-conditioners, it is characterized in that:

The bottom surfaces central part of above-mentioned air guiding device is provided with and prevents from the cylindrical guide device of the space between spiral fan and the air guiding device to the adverse current of fan central part.

7, air-conditioner according to claim 3 is characterized in that:

Above-mentioned air guiding device top and below be formed with and have suction inlet and outlet, the stream basal area of above-mentioned suction inlet and outlet is littler than the flowpath segment area of air guiding device inner space.

8, air-conditioner according to claim 1 is characterized in that:

Above-mentioned housing upper side possesses the discharge top cover that the air of finishing heat exchange is discharged to required direction, and above-mentioned discharge top cover is arranged on the air guiding device with liftable structure.

9, air-conditioner according to claim 8 is characterized in that:

Above-mentioned air guiding device is the box-shape of the hollow of corner chamfering, and its outer peripheral face is formed with and is used to make the gathering sill of discharging the top cover lifting.

10, air-conditioner according to claim 9 is characterized in that:

Above-mentioned air guiding device is provided with the anti-leak parts that are used to prevent that the air by gathering sill from leaking.

11, air-conditioner according to claim 10 is characterized in that:

The form of above-mentioned anti-leak parts is both can make to discharge the top cover lifting, again in order to cover the part of the guide post process of discharging top cover, and the curtain form that mid portion is torn.

12, air-conditioner according to claim 10 is characterized in that:

The form of above-mentioned anti-leak parts is both can make to discharge the top cover lifting, again for the part of the guide post process of covering the discharge top cover that is positioned at above-mentioned gathering sill, and is arranged at the brush of the tight setting with elastic force around the gathering sill.

13, air-conditioner according to claim 8 is characterized in that:

The drive unit and the power transmission that are used for the above-mentioned discharge top cover of lifting are the power delivery modes that utilizes the ball-screw of drive motors, or utilize the power delivery mode of guide rail and pinion.

14, air-conditioner according to claim 1 is characterized in that:

The conduct of above-mentioned spiral fan is a value in 1.8 to 2.2 scopes for the spiral index of the value of the torsion angle of the axle center axis direction of blade.

15, according to claim 1 or 14 described air-conditioners, it is characterized in that:

The number of above-mentioned blade is n, and n is the positive number 2 or more, and above-mentioned blade anglec of rotation α is greater than with 360 angles of spending divided by n.

16, air-conditioner according to claim 15 is characterized in that:

The number of above-mentioned blade is n, and n is the positive number 2 or more, above-mentioned blade anglec of rotation α be than 360 spend angle divided by n greater than 30 degree scopes with interior angle.

17, air-conditioner according to claim 16 is characterized in that:

See that in the plane above-mentioned blade does not possess the field that the corresponding blade that is formed at opposite side is overlapped and disturbs.

18, air-conditioner according to claim 17 is characterized in that:

D is compared in the axle center _h/ D _b4 are: the diameter of blade 133 is to the diameter ratio in axle center, and the axle center ratio of above-mentioned spiral fan is 0.5.

19, air-conditioner according to claim 18 is characterized in that:

Above-mentioned blade increases angle from entrance side gradually to outlet side, makes the angle of outlet (θ e) greater than inlet angle (θ i).

20, air-conditioner according to claim 21 is characterized in that:

The inlet angle of above-mentioned blade (θ i) forms 35 degree, and the angle of outlet of blade (θ e) forms 45 degree.

21, according to claim 1 or 15 described air-conditioners, it is characterized in that:

The amplitude direction section of above-mentioned each blade is probably S-type, or the cut-off rule form of Tai Ji printed words, and, preferably open gradually to the bottom side section, and approach the form of straight line from the upper side of blade.

22, air-conditioner according to claim 21 is characterized in that:

The thickness of above-mentioned axle center and blade is than (th: tb) be 1: 1.5.

23, air-conditioner according to claim 22 is characterized in that:

The thickness difference of above-mentioned blade, and it is thicker than the pin part outside approaching radial direction to approach the part in axle center.

24, according to claim 1 or 16 described air-conditioners, it is characterized in that:

The back of blade is formed with the rib that plays the tendon effect along the length direction of blade for blade.

25, air-conditioner according to claim 24 is characterized in that:

Above the inlet portion side that the air-flow of above-mentioned blade bottom flows into or below be provided with the protrusion that swells with respect to other positions.

26, air-conditioner according to claim 25 is characterized in that:

The surface of the back of above-mentioned blade is formed with several the little indentures as the groove that is formed at golf.

27, a kind of air-conditioner is characterized in that, comprising:

Be formed with the housing of the air duct of a plurality of suctions and discharge air;

Be arranged at the heat exchanger in the above-mentioned housing;

Spiral fan to the vertical direction of principal axis forced air supply air of housing comprises: columnar axle center and at a plurality of spiral vanes of the outer peripheral face in above-mentioned axle center, and above-mentioned blade forms with helical twist towards direction of principal axis from the end to end in axle center;

Outside portion around above-mentioned spiral fan is provided with, and is used to improve the pilot hole of static pressure;

Be arranged at the bottom of above-mentioned spiral fan, rotate the drive motors of spiral fan to a direction.

28, air-conditioner according to claim 27 is characterized in that:

Above-mentioned pilot hole is formed with the enlarged portion that increases gradually to bottom and upper end diameter from the centre part.

29, air-conditioner according to claim 27 is characterized in that:

The enlarged portion of above-mentioned pilot hole is the form with certain curvature bending.

30, air-conditioner according to claim 28 is characterized in that:

Mid portion between the above-mentioned enlarged portion of above-mentioned pilot hole is a linear.

31, according to the described air-conditioner of claim 28 to 30, it is characterized in that:

Above-mentioned pilot hole is center symmetry substantially with the spiral fan.

32, air-conditioner according to claim 5 is characterized in that:

Each corner part of above-mentioned pilot hole is close to each internal face setting of housing.

33, according to claim 27 or 31 described air-conditioners, it is characterized in that:

The lateral surface of above-mentioned pilot hole is provided with and utilizes covibration to draw the resonator of the ripple of CF.

34, air-conditioner according to claim 32 is characterized in that:

Above-mentioned resonator is also different according to its size of the difference that the position is set.

35, according to claim 27 or 34 described air-conditioners, it is characterized in that:

Above-mentioned resonator inside is provided with sound-absorbing material.

36, air-conditioner according to claim 35 is characterized in that:

Above-mentioned sound-absorbing material is arranged at resonator inside with any one in the materials such as mineral wool, sponge, fabric or the form that makes up more than two.

37, air-conditioner according to claim 27 is characterized in that, also includes:

Be arranged at the upper side of above-mentioned spiral fan, the air guide of flow that will discharge from spiral fan is to the air guiding device in the outside.

38, air-conditioner according to claim 36 is characterized in that:

Above-mentioned air guiding device is for stream being maintained the outside, and with the corner chamfering and form the box-shape of hollow.

39, according to the described air-conditioner of claim 38, it is characterized in that:

The bottom surfaces central part of above-mentioned air guiding device is provided with and prevents from the cone guide device of the space between spiral fan and the air guiding device to the adverse current of fan central part.

40, according to the described air-conditioner of claim 38, it is characterized in that:

Above-mentioned air guiding device top and below be formed with and have suction inlet and outlet, the stream basal area of above-mentioned suction inlet and outlet is littler than the flowpath segment area of air guiding device inner space.

Images