CN105370624A - Centrifugal fan and movable air conditioner - Google Patents
Centrifugal fan and movable air conditioner Download PDFInfo
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- CN105370624A CN105370624A CN201510864225.6A CN201510864225A CN105370624A CN 105370624 A CN105370624 A CN 105370624A CN 201510864225 A CN201510864225 A CN 201510864225A CN 105370624 A CN105370624 A CN 105370624A
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- wind wheel
- intake grill
- centrifugal blower
- axis
- upper cover
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/4226—Fan casings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/4226—Fan casings
- F04D29/424—Double entry casings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/02—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides a centrifugal fan and a movable air conditioner. The centrifugal fan comprises a motor, a volute and a wind wheel. The volute comprises an upper cover and a lower cover, and a first wind inlet is formed in the middle of the upper cover, is formed by upward protrusion of the end surface of the upper cover and wraps the upper end of the wind wheel. The lower cover is connected to the upper cover for forming a wind channel and is provided with a second wind inlet corresponding to the first wind inlet of the upper cover, and the second wind inlet wraps the lower end of the wind wheel. The axis of the first wind inlet and the axis of the second wind inlet overlap and are parallel with the axis of the wind wheel. According to the centrifugal fan, the distance between the upper end surface and the lower end surface of the air channel is reduced, internal leakage generated when air flows through the gap between the wind wheel and the end surfaces of the air channel is reduced, the interference of leakage air flow to main air flow is reduced, and the efficiency of the centrifugal fan is improved. In addition, the eccentric design is adopted between the first wind inlet and the second wind inlet and the wind wheel, and therefore the air inflow uniformity is improved, high-pressure air flow is prevented from being partially formed at the wind inlet of the wind channel, and the formed eddy noise is lowered.
Description
Technical field
The present invention relates to air-conditioning technical field, in particular to a kind of centrifugal blower and the moveable air conditioner with this centrifugal blower.
Background technique
At present, along with the common development of air-conditioning technical and the level of consumption, the requirement of Consumer to the noise of air conditioner, efficiency, compactedness and travelling comfort improves constantly.Existing moveable air conditioner, its internal structure is compact, and distribution form is various, not yet forms more unified distribution form, and the noise of air conditioner, efficiency, the index such as compactedness and travelling comfort still exist larger optimization and room for promotion.Wherein, the lifting of scientific design to These parameters of blower fan plays a key effect.How according to the structural type of moveable air conditioner, under the prerequisite ensureing refrigeration (or heating) ability, the structural type in adjustment air channel, thus realize fan efficiency lifting, blower sizes reduction and fan noise reduction, this is undoubtedly the inexorable trend of moveable air conditioner technical development.
Therefore, for the specific constructive form of mobile air-conditioner, it is very necessary to propose that a kind of noise is low, efficiency is high, the blower fan structure of compact structure just seems.
Summary of the invention
In order to solve the problems of the technologies described above one of at least, one object of the present invention is to provide that a kind of noise is low, efficiency is high, and the centrifugal blower that volume is little.
Another object of the present invention is to provide a kind of moveable air conditioner with above-mentioned centrifugal blower.
In view of this, the embodiment of first aspect present invention provides a kind of centrifugal blower, comprising: motor; Spiral case, described spiral case has air channel, and described air channel has exhaust outlet; And wind wheel, described wind wheel is connected with the rotating shaft of described motor, and is positioned at described air channel; Wherein, described spiral case comprises: upper cover, and the middle part of described upper cover has the first intake grill, and described first intake grill is raised up by the end face of described upper cover and formed, and wraps up the upper end portion of described wind wheel; And lower cover, described lower cover is connected with described upper cover, and form described air channel, described lower cover has the second intake grill of setting corresponding with described upper cover, described second intake grill wraps up the underpart of described wind wheel, and the dead in line of described first intake grill and described second intake grill and with the axis being parallel of described wind wheel.
Centrifugal blower provided by the invention, first intake grill is raised up by the end face of upper cover and is formed, second intake grill is with the corresponding setting of the first intake grill and structure is identical, the end of the end parcel wind wheel of the two, distance between the upper and lower end face in air channel is reduced, thus reduce internal leakage that gas formed through gap between wind wheel and air channel end face and reveal the interference of air-flow to main air flow, and then improve the efficiency of centrifugal blower, simultaneously, also reduce the volume of product, in addition, the dead in line of the first intake grill and the second intake grill and with the axis being parallel of wind wheel, make the first intake grill and eccentricly between the second intake grill and wind wheel to design, on the one hand, improve the uniformity of air intake, avoid air inlet of air duct and be partially formed high gas flow, on the other hand, reduce the eddy current noise that centrifugal blower is formed, improve the travelling comfort of product.
Specifically, existing moveable air conditioner, its internal structure is compact, distribution form is various, not yet form more unified distribution form, the noise of air conditioner, efficiency, still there is larger optimization and room for promotion in the index such as compactedness and travelling comfort, therefore, centrifugal blower provided by the invention, first intake grill is raised up by the end face of upper cover and is formed, second intake grill is with the corresponding setting of the first intake grill and structure is identical, the end of the end parcel wind wheel of the two, distance between the upper and lower end face in air channel is reduced, thus reduce internal leakage that gas formed through gap between wind wheel and air channel end face and reveal the interference of air-flow to main air flow, and then improve the efficiency of centrifugal blower, simultaneously, also reduce the volume of product, in addition, the dead in line of the first intake grill and the second intake grill and with the axis being parallel of wind wheel, make the first intake grill and eccentricly between the second intake grill and wind wheel to design, on the one hand, improve the uniformity of air intake, avoid air inlet of air duct and be partially formed high gas flow, on the other hand, reduce the eddy current noise that centrifugal blower is formed, improve the travelling comfort of product.
In addition, the centrifugal blower in above-described embodiment provided by the invention can also have following additional technical feature:
In technique scheme, the perpendicular distance between the axis of described first intake grill and the axis of described wind wheel is 3% ~ 8% of the external diameter of described wind wheel.
In this technological scheme, perpendicular distance between the axis of the first intake grill and the axis of wind wheel is not less than 3% of the external diameter of wind wheel, ensure that and produce certain throw of eccentric therebetween, make the air intake of the first intake grill even, perpendicular distance between the axis of the first intake grill and the axis of wind wheel is not more than 8% of the external diameter of wind wheel, and avoid the two throw of eccentric excessive, the air output difference at the first intake grill two ends is too large, ensure that the uniformity of air intake, prevent from being partially formed high gas flow; Certainly, because of the axis of the first intake grill and the dead in line of the second intake grill, the perpendicular distance between the axis of the second intake grill and the axis of wind wheel is 3% ~ 8% of the external diameter of wind wheel.
In above-mentioned arbitrary technological scheme, the perpendicular distance between the axis of described first intake grill and the axis of described wind wheel is 4.5% of the external diameter of described wind wheel.
In this technological scheme, the perpendicular distance between the first intake grill and the axis of wind wheel is 4.5% of the external diameter of wind wheel, makes the intake uniformity of the first intake grill best, avoids the first intake grill and is partially formed the efficiency that high gas flow affects blower fan; Certainly, because of the axis of the first intake grill and the dead in line of the second intake grill, the perpendicular distance between the axis of the second intake grill and the axis of wind wheel is 4.5% of the external diameter of wind wheel.
In above-mentioned arbitrary technological scheme, the 5mm ~ 10mm less of the numerical value of described wind wheel height of the distance between the upper-end surface in described air channel and lower end surface.
In this technological scheme, distance between the upper-end surface in air channel and lower end surface 5mm ~ 10mm less of the numerical value of wind wheel height, on the one hand, avoid the distance air quantity and the flow velocity that affect air channel more excessive than wind wheel height between the upper-end surface in air channel and lower end surface, ensure that the recoverable amount of wind in air channel, improve the efficiency of centrifugal blower, on the other hand, prevent the distance between the upper-end surface in air channel and lower end surface more too small than wind wheel height, do not have the distance between reduction upper and lower end face, air channel, do not reach and reduce the internal leakage that formed through gap between wind wheel and air channel end face of gas and reveal the interference of air-flow to main air flow, the effect reducing volume is not reached yet, ensure that the reliability of product, improve the efficiency of centrifugal blower.
In above-mentioned arbitrary technological scheme, described first intake grill and described second intake grill and the radial direction of described wind wheel and/or the gap of axis are 0.5% ~ 3.5% of the external diameter of described wind wheel.
In this technological scheme, the radial direction of the first intake grill and the second intake grill and wind wheel and/or the gap of axis are all not less than 0.5% of the external diameter of wind wheel, ensure that the first intake grill and have certain safe distance between the second intake grill and wind wheel, the situation avoiding the first intake grill and collide between the second intake grill and wind wheel occurs, improve the reliability of product, the radial direction of the first intake grill and the second intake grill and wind wheel and/or the gap of axis are all not more than 3.5% of the external diameter of wind wheel, prevent the radial direction of the first intake grill and the second intake grill and wind wheel and/or the excesssive gap of axis cause gas internal leakage and the interference of gas leakage to main air flow excessive, improve the efficiency of centrifugal blower.
In above-mentioned arbitrary technological scheme, the radial and axial gap of described first intake grill and described second intake grill and described wind wheel is 5mm.
In this technological scheme, the radial and axial gap of the first intake grill and described second intake grill and wind wheel is 5mm, make the first intake grill and the gap between described second intake grill and wind wheel the most suitable, reduce gas in air channel internal leakage and the interference effect of internal leakage air-flow to main air flow best, improve the efficiency of product.
In above-mentioned arbitrary technological scheme, described spiral case also comprises snail tongue, and described snail tongue is positioned at described exhaust outlet place, and described snail tongue comprises symmetrically arranged two sub-snail tongues, two described sub-snail tongues be separately positioned on described upper cover and described under cover; Described sub-snail tongue comprises horizontal segment and arcuate segment, and has angle between described horizontal segment and vertical plane, and the radius of the arcuate segment of two described sub-snail tongues is equal.
In this technological scheme, snail tongue comprises symmetrically arranged two sub-snail tongues, sub-snail tongue comprises horizontal segment and arcuate segment, and between horizontal segment and vertical plane, there is angle, two sub-snail ligulates are made to become a V-shape structure, thus the frequency noise produced when making gas high speed flow near snail tongue is staggered mutually, the noise preventing frequency close mutually superposes and produces higher noise peak, reduce the noise of product, in addition, the radius of the arcuate segment of two sub-snail tongues is equal, ensure the rationality that duct-curve (helix) designs, namely the duct-curve on all cross sections all meets helical design principle, common taper snail tongue characteristic Design is avoided to cause the unreasonable distortion of duct-curve and cause the decline of fan efficiency, improve the efficiency of centrifugal blower.
In above-mentioned arbitrary technological scheme, the angle between described horizontal segment and described vertical plane is 2 ° ~ 10 °.
In this technological scheme, angle between horizontal segment and vertical plane is 2 ° ~ 10 °, on the one hand, make angle therebetween be not less than 2 °, ensure that to there is angle therebetween, thus reach the effect reducing noise, on the other hand, make angle therebetween be not more than 10 °, angle excessive the causing avoided therebetween does not have the effect of mutually being staggered by the noise of generation, ensure that the reliability of product, improve the effect reducing noise.
In above-mentioned arbitrary technological scheme, the angle between described horizontal segment and described vertical plane is 5 °.
In this technological scheme, the angle between horizontal segment and vertical plane is 5 °, and the action effect mutually staggered by the noise of generation when making gas high speed flow near snail tongue is best, and the effect reducing noise is best, improves the comfort of product.
The embodiment of second aspect present invention provides a kind of moveable air conditioner, includes the centrifugal blower as described in above-mentioned any embodiment.
The centrifugal blower that the embodiment that the moveable air conditioner that the embodiment of second aspect present invention provides is provided with first aspect provides, first intake grill is raised up by the end face of upper cover and is formed, second intake grill is with the corresponding setting of the first intake grill and structure is identical, the end of the end parcel wind wheel of the two, distance between the upper and lower end face in air channel is reduced, thus reduce internal leakage that gas formed through gap between wind wheel and air channel end face and reveal the interference of air-flow to main air flow, and then improve the efficiency of centrifugal blower, simultaneously, also reduce the volume of product, in addition, the dead in line of the first intake grill and the second intake grill and with the axis being parallel of wind wheel, make the first intake grill and eccentricly between the second intake grill and wind wheel to design, on the one hand, improve the uniformity of air intake, avoid air inlet of air duct and be partially formed high gas flow, on the other hand, reduce the eddy current noise that centrifugal blower is formed, improve the travelling comfort of product, in addition, when the heat exchanger of moveable air conditioner is arranged perpendicular to air channel end face, being compressed with of the spacing of upper and lower end face, air channel is beneficial to improves airspeed in the middle part of heat exchanger and heat exchange efficiency, improves the heat exchange efficiency of product.
Additional aspect of the present invention and advantage become obvious by description part below, or are 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 embodiment, wherein:
Fig. 1 is the perspective view of moveable air conditioner of the present invention;
Fig. 2 is the sectional structure schematic diagram of moveable air conditioner shown in Fig. 1;
Fig. 3 is the perspective view of centrifugal blower shown in Fig. 2;
Fig. 4 is the main TV structure schematic diagram of centrifugal blower shown in Fig. 3;
Fig. 5 be in Fig. 4 A-A to sectional structure schematic diagram;
Fig. 6 be in Fig. 4 B-B to TV structure schematic diagram.
Wherein, the corresponding relation in Fig. 1 to Fig. 6 between reference character and component names is:
100 centrifugal blowers, 1 spiral case, 11 air channels, 12 exhaust outlets, 13 upper covers, 131 first intake grills, 14 lower covers, 141 second intake grills, 15 snail tongues, 151 horizontal segments, 152 arcuate segments, 2 wind wheels, 20 heat exchangers, 200 moveable air conditioners.
Embodiment
In order to more clearly understand above-mentioned purpose of the present invention, feature and advantage, below in conjunction with the drawings and specific embodiments, the present invention is further described in detail.It should be noted that, when not conflicting, the feature in the embodiment of the application and embodiment can combine mutually.
Set forth a lot of detail in the following description so that fully understand the present invention; but; the present invention can also adopt other to be different from other modes described here and implement, and therefore, protection scope of the present invention is not by the restriction of following public specific embodiment.
Referring to Fig. 1 to Fig. 6, described according to some embodiments of the invention centrifugal blower is described.
As shown in Figures 3 to 6, the centrifugal blower 100 that the embodiment of first aspect present invention provides comprises: motor, spiral case 1 and wind wheel 2.
Particularly, spiral case 1 has air channel 11, and air channel 11 has exhaust outlet 12; Wind wheel 2 is connected with the rotating shaft of motor, and is positioned at air channel 11; Wherein, spiral case 1 comprises: upper cover 13 and lower cover 14,
More specifically, the middle part of upper cover 13 has the first intake grill 131, and the first intake grill 131 is raised up by the end face of upper cover 13 and formed, and wraps up the upper end portion of wind wheel 2; Lower cover 14 is connected with upper cover 13, and form air channel 11, the second intake grill 141, second intake grill 141 that lower cover 14 has a setting corresponding with upper cover 13 wraps up the underpart of wind wheel 2, and the dead in line of the first intake grill 131 and the second intake grill 141 and with the axis being parallel of wind wheel 2.
Centrifugal blower 100 provided by the invention, first intake grill 131 is raised up by the end face of upper cover 13 and is formed, second intake grill 141 is with the corresponding setting of the first intake grill 131 and structure is identical, the end of the end parcel wind wheel 2 of the two, distance between the upper and lower end face in air channel 11 is reduced, thus reduce internal leakage that gas formed through gap between wind wheel 2 and air channel 11 end face and reveal the interference of air-flow to main air flow, and then improve the efficiency of centrifugal blower 100, simultaneously, also reduce the volume of product, in addition, the dead in line of the first intake grill 131 and the second intake grill 141 and with the axis being parallel of wind wheel 2, make the first intake grill 131 and eccentricly between the second intake grill 141 and wind wheel 2 to design, on the one hand, improve the uniformity of air intake, avoid air channel 11 intake grill and be partially formed high gas flow, on the other hand, reduce the eddy current noise that centrifugal blower 100 is formed, improve the travelling comfort of product.
In one embodiment of the invention, as shown in Figure 5, the perpendicular distance between the axis of the first intake grill 131 and the axis of wind wheel 2 is 3% ~ 8% of the external diameter of wind wheel 2.
In this embodiment, perpendicular distance between the axis of the first intake grill 131 and the axis of wind wheel 2 is not less than 3% of the external diameter of wind wheel 2, ensure that and produce certain throw of eccentric therebetween, make the air intake of the first intake grill 131 even, perpendicular distance between the axis of the first intake grill 131 and the axis of wind wheel 2 is not more than 8% of the external diameter of wind wheel 2, avoid the two throw of eccentric excessive, the air output difference at the first intake grill 131 two ends is too large, ensure that the uniformity of air intake, prevent from being partially formed high gas flow; Certainly, because of the axis of the first intake grill 131 and the dead in line of the second intake grill 141, the perpendicular distance between the axis of the second intake grill 141 and the axis of wind wheel 2 is 3% ~ 8% of the external diameter of wind wheel 2.
In one embodiment of the invention, the perpendicular distance between the axis of the first intake grill 131 and the axis of wind wheel 2 is 4.5% of the external diameter of wind wheel 2.
In this embodiment, the perpendicular distance between the first intake grill 131 and the axis of wind wheel 2 is 4.5% of the external diameter of wind wheel 2, makes the intake uniformity of the first intake grill 131 best, avoids the first intake grill 131 and is partially formed the efficiency that high gas flow affects blower fan; Certainly, because of the axis of the first intake grill 131 and the dead in line of the second intake grill 141, the perpendicular distance between the axis of the second intake grill 141 and the axis of wind wheel 2 is 4.5% of the external diameter of wind wheel 2.
In one embodiment of the invention, as shown in Figure 6, the distance h 5mm ~ 10mm less of the numerical value of wind wheel 2 height H between the upper-end surface in air channel 11 and lower end surface.
In this embodiment, distance between the upper-end surface in air channel 11 and lower end surface 5mm ~ 10mm less of the numerical value of wind wheel 2 height, on the one hand, avoid the distance air quantity and the flow velocity that affect air channel 11 highly more excessive than wind wheel 2 between the upper-end surface in air channel 11 and lower end surface, ensure that the recoverable amount of wind in air channel 11, improve the efficiency of centrifugal blower 100, on the other hand, prevent the distance between the upper-end surface in air channel 11 and lower end surface highly more too small than wind wheel 2, do not have the distance between reduction upper and lower end face, air channel 11, do not reach and reduce the internal leakage that formed through gap between wind wheel 2 and air channel 11 end face of gas and reveal the interference of air-flow to main air flow, the effect reducing volume is not reached yet, ensure that the reliability of product, improve the efficiency of centrifugal blower 100.
In one embodiment of the invention, as shown in Figure 6, the gap w of radial direction of the first intake grill 131 and the second intake grill 141 and wind wheel 2 and/or the gap d of axis are 0.5% ~ 3.5% of the external diameter of wind wheel 2.
In this embodiment, first intake grill 131 and the second intake grill 141 are all not less than 0.5% of the external diameter of wind wheel 2 with the radial direction of wind wheel 2 and/or the gap of axis, ensure that the first intake grill 131 and have certain safe distance between the second intake grill 141 and wind wheel 2, avoid the first intake grill 131 and situation about colliding between the second intake grill 141 and wind wheel 2 occurs, improve the reliability of product, first intake grill 131 and the second intake grill 141 are all not more than 3.5% of the external diameter of wind wheel 2 with the radial direction of wind wheel 2 and/or the gap of axis, prevent the first intake grill 131 and the second intake grill 141 and the radial direction of wind wheel 2 and/or the excesssive gap of axis cause gas internal leakage and the interference of gas leakage to main air flow excessive, improve the efficiency of centrifugal blower 100.
In one embodiment of the invention, as shown in Figure 6, the first intake grill 131 and the second intake grill 141 are 5mm with the radial clearance w of wind wheel 2 and the gap d of axis.
In this embodiment, first intake grill 131 and the second intake grill 141 are 5mm with the radial and axial gap of wind wheel 2, make the first intake grill 131 and the gap between the second intake grill 141 and wind wheel 2 the most suitable, reduce gas in air channel 11 internal leakage and the interference effect of internal leakage air-flow to main air flow best, improve the efficiency of product.
In one embodiment of the invention, as shown in Figures 3 to 5, spiral case 1 also comprises snail tongue 15, and snail tongue 15 is positioned at exhaust outlet 12 place, and snail tongue 15 comprises symmetrically arranged two sub-snail tongues 15, two sub-snail tongues 15 and is separately positioned on upper cover 13 and lower cover 14; Sub-snail tongue 15 comprises horizontal segment 151 and arcuate segment 152, and has angle between horizontal segment 151 and vertical plane, and the radius of the arcuate segment 152 of two sub-snail tongues 15 is equal.
In this embodiment, snail tongue 15 comprises symmetrically arranged two sub-snail tongues 15, sub-snail tongue 15 comprises horizontal segment 151 and arcuate segment 152, and between horizontal segment 151 and vertical plane, there is angle, two sub-snail tongues 15 are made to form a V-shape structure, thus the frequency noise produced when making gas high speed flow near snail tongue 15 is staggered mutually, the noise preventing frequency close mutually superposes and produces higher noise peak, reduce the noise of product, in addition, the radius of the arcuate segment 152 of two sub-snail tongues 15 is equal, ensure the rationality that air channel 11 curve (helix) is designed, namely air channel 11 curve on all cross sections all meets helical design principle, common taper snail tongue 15 characteristic Design is avoided to cause the unreasonable distortion of air channel 11 curve and cause the decline of fan efficiency, improve the efficiency of centrifugal blower 100.
In one embodiment of the invention, as shown in Figure 4, the angle between horizontal segment 151 and vertical plane is 2 ° ~ 10 °.
In this embodiment, angle between horizontal segment 151 and vertical plane is 2 ° ~ 10 °, on the one hand, make angle therebetween be not less than 2 °, ensure that to there is angle therebetween, thus reach the effect reducing noise, on the other hand, make angle therebetween be not more than 10 °, angle excessive the causing avoided therebetween does not have the effect of mutually being staggered by the noise of generation, ensure that the reliability of product, improve the effect reducing noise.
In one embodiment of the invention, the angle between horizontal segment 151 and vertical plane is 5 °.
In this embodiment, the angle between horizontal segment 151 and vertical plane is 5 °, and the action effect mutually staggered by the noise of generation when making gas high speed flow near snail tongue 15 is best, and the effect reducing noise is best, improves the comfort of product.
As depicted in figs. 1 and 2, the moveable air conditioner 200 that the embodiment of second aspect present invention provides, includes the centrifugal blower 100 as above-mentioned any embodiment.
The centrifugal blower 100 that the embodiment that the moveable air conditioner 200 that the embodiment of second aspect present invention provides is provided with first aspect provides, first intake grill 131 is raised up by the end face of upper cover 13 and is formed, second intake grill 141 is with the corresponding setting of the first intake grill 131 and structure is identical, the end of the end parcel wind wheel 2 of the two, distance between the upper and lower end face in air channel 11 is reduced, thus reduce internal leakage that gas formed through gap between wind wheel 2 and air channel 11 end face and reveal the interference of air-flow to main air flow, and then improve the efficiency of centrifugal blower 100, simultaneously, also reduce the volume of product, in addition, the dead in line of the first intake grill 131 and the second intake grill 141 and with the axis being parallel of wind wheel 2, make the first intake grill 131 and eccentricly between the second intake grill 141 and wind wheel 2 to design, on the one hand, improve the uniformity of air intake, avoid air channel 11 intake grill and be partially formed high gas flow, on the other hand, reduce the eddy current noise that centrifugal blower 100 is formed, improve the travelling comfort of product, in addition, when the heat exchanger 20 of moveable air conditioner 200 is arranged perpendicular to air channel 11 end face, being compressed with of the spacing of upper and lower end face, air channel 11 is beneficial to improves airspeed in the middle part of heat exchanger 20 and heat exchange efficiency, improves the heat exchange efficiency of product.
In sum, centrifugal blower provided by the invention, first intake grill is raised up by the end face of upper cover and is formed, second intake grill is with the corresponding setting of the first intake grill and structure is identical, the end of the end parcel wind wheel of the two, distance between the upper and lower end face in air channel is reduced, thus reduce internal leakage that gas formed through gap between wind wheel and air channel end face and reveal the interference of air-flow to main air flow, and then improve the efficiency of centrifugal blower, simultaneously, also reduce the volume of product, in addition, the dead in line of the first intake grill and the second intake grill and with the axis being parallel of wind wheel, make the first intake grill and eccentricly between the second intake grill and wind wheel to design, on the one hand, improve the uniformity of air intake, avoid air inlet of air duct and be partially formed high gas flow, on the other hand, reduce the eddy current noise that centrifugal blower is formed, improve the travelling comfort of product.
Specifically, existing moveable air conditioner, its internal structure is compact, distribution form is various, not yet form more unified distribution form, the noise of air conditioner, efficiency, still there is larger optimization and room for promotion in the index such as compactedness and travelling comfort, therefore, centrifugal blower provided by the invention, first intake grill is raised up by the end face of upper cover and is formed, second intake grill is with the corresponding setting of the first intake grill and structure is identical, the end of the end parcel wind wheel of the two, distance between the upper and lower end face in air channel is reduced, thus reduce internal leakage that gas formed through gap between wind wheel and air channel end face and reveal the interference of air-flow to main air flow, and then improve the efficiency of centrifugal blower, simultaneously, also reduce the volume of product, in addition, the dead in line of the first intake grill and the second intake grill and with the axis being parallel of wind wheel, make the first intake grill and eccentricly between the second intake grill and wind wheel to design, on the one hand, improve the uniformity of air intake, avoid air inlet of air duct and be partially formed high gas flow, on the other hand, reduce the eddy current noise that centrifugal blower is formed, improve the travelling comfort of product.
In the present invention, term " first ", " second " object only for describing, and instruction or hint relative importance can not be interpreted as.The term such as term " installation ", " being connected ", " connection ", " fixing " all should be interpreted broadly, and such as, " connection " can be fixedly connected with, and also can be removably connect, or connects integratedly; " being connected " can be directly be connected, and also indirectly can be connected by intermediary.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 description of the invention, it will be appreciated that, term " on ", the orientation of the instruction such as D score or position relationship be 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 unit must have specific direction, with specific azimuth configuration and operation, therefore, limitation of the present invention can not be interpreted as.
In the description of this specification, specific features, structure, material or feature that the description of term " embodiment ", " some embodiments ", " specific embodiment " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment 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 embodiment or example.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a centrifugal blower, is characterized in that, comprising:
Motor;
Spiral case, described spiral case has air channel, and described air channel has exhaust outlet; With
Wind wheel, described wind wheel is connected with the rotating shaft of described motor, and is positioned at described air channel;
Wherein, described spiral case comprises:
Upper cover, the middle part of described upper cover has the first intake grill, and described first intake grill is raised up by the end face of described upper cover and formed, and wraps up the upper end portion of described wind wheel; With
Lower cover, described lower cover is connected with described upper cover, and form described air channel, described lower cover has the second intake grill of setting corresponding with described upper cover, described second intake grill wraps up the underpart of described wind wheel, and the dead in line of described first intake grill and described second intake grill and with the axis being parallel of described wind wheel.
2. centrifugal blower according to claim 1, is characterized in that,
Perpendicular distance between the axis of described first intake grill and the axis of described wind wheel is 3% ~ 8% of the external diameter of described wind wheel.
3. centrifugal blower according to claim 2, is characterized in that,
Perpendicular distance between the axis of described first intake grill and the axis of described wind wheel is 4.5% of the external diameter of described wind wheel.
4. centrifugal blower according to claim 1, is characterized in that,
Distance between the upper-end surface in described air channel and lower end surface 5mm ~ 10mm less of the numerical value of described wind wheel height.
5. centrifugal blower according to claim 1, is characterized in that,
Described first intake grill and described second intake grill and the radial direction of described wind wheel and/or the gap of axis are 0.5% ~ 3.5% of the external diameter of described wind wheel.
6. centrifugal blower according to claim 5, is characterized in that,
The radial and axial gap of described first intake grill and described second intake grill and described wind wheel is 5mm.
7. centrifugal blower according to claim 1, is characterized in that,
Described spiral case also comprises snail tongue, and described snail tongue is positioned at described exhaust outlet place, and described snail tongue comprises symmetrically arranged two sub-snail tongues, two described sub-snail tongues be separately positioned on described upper cover and described under cover; Described sub-snail tongue comprises horizontal segment and arcuate segment, and has angle between described horizontal segment and vertical plane, and the radius of the arcuate segment of two described sub-snail tongues is equal.
8. centrifugal blower according to claim 7, is characterized in that,
Angle between described horizontal segment and described vertical plane is 2 ° ~ 10 °.
9. centrifugal blower according to claim 8, is characterized in that,
Angle between described horizontal segment and described vertical plane is 5 °.
10. a moveable air conditioner, is characterized in that, includes the centrifugal blower described in any one of claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510864225.6A CN105370624A (en) | 2015-11-30 | 2015-11-30 | Centrifugal fan and movable air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510864225.6A CN105370624A (en) | 2015-11-30 | 2015-11-30 | Centrifugal fan and movable air conditioner |
Publications (1)
| Publication Number | Publication Date |
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| CN105370624A true CN105370624A (en) | 2016-03-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510864225.6A Pending CN105370624A (en) | 2015-11-30 | 2015-11-30 | Centrifugal fan and movable air conditioner |
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| CN (1) | CN105370624A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106224292A (en) * | 2016-08-31 | 2016-12-14 | 珠海格力电器股份有限公司 | Spiral case assembly and there is its window air conditioner |
| CN106524316A (en) * | 2016-12-30 | 2017-03-22 | 广东美的制冷设备有限公司 | Centrifugal wind wheel, combined centrifugal wind wheel and air conditioner |
| CN109000349A (en) * | 2018-09-04 | 2018-12-14 | 奥克斯空调股份有限公司 | A kind of ducting assembly and air conditioner |
| CN109000350A (en) * | 2018-09-04 | 2018-12-14 | 奥克斯空调股份有限公司 | A kind of ducting assembly and air conditioner |
| CN109083855A (en) * | 2018-10-24 | 2018-12-25 | 奥克斯空调股份有限公司 | A kind of blower fan structure and air conditioner |
| CN110886709A (en) * | 2018-09-11 | 2020-03-17 | 日本电产株式会社 | Blower and blower device using the same |
| CN111947243A (en) * | 2020-07-29 | 2020-11-17 | 珠海格力电器股份有限公司 | Air duct structure, mobile air conditioner with air duct structure and application of mobile air conditioner |
| CN113137381A (en) * | 2020-01-19 | 2021-07-20 | 广东美的环境电器制造有限公司 | Centrifugal fan for bladeless air supply device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106224292A (en) * | 2016-08-31 | 2016-12-14 | 珠海格力电器股份有限公司 | Spiral case assembly and there is its window air conditioner |
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| CN110886709B (en) * | 2018-09-11 | 2021-07-09 | 日本电产株式会社 | Blower and blower device using the same |
| CN109083855A (en) * | 2018-10-24 | 2018-12-25 | 奥克斯空调股份有限公司 | A kind of blower fan structure and air conditioner |
| CN113137381A (en) * | 2020-01-19 | 2021-07-20 | 广东美的环境电器制造有限公司 | Centrifugal fan for bladeless air supply device |
| CN111947243A (en) * | 2020-07-29 | 2020-11-17 | 珠海格力电器股份有限公司 | Air duct structure, mobile air conditioner with air duct structure and application of mobile air conditioner |
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Application publication date: 20160302 |