CN108457897A - Centrifugal wind wheel and air conditioner indoor unit - Google Patents
Centrifugal wind wheel and air conditioner indoor unit Download PDFInfo
- Publication number
- CN108457897A CN108457897A CN201810313748.5A CN201810313748A CN108457897A CN 108457897 A CN108457897 A CN 108457897A CN 201810313748 A CN201810313748 A CN 201810313748A CN 108457897 A CN108457897 A CN 108457897A
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- air inducing
- inducing circle
- wind wheel
- air
- centrifugal wind
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- 230000001939 inductive effect Effects 0.000 claims abstract description 146
- 230000002093 peripheral effect Effects 0.000 claims description 13
- 239000004033 plastic Substances 0.000 claims description 6
- 229920003023 plastic Polymers 0.000 claims description 6
- 239000011521 glass Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 description 53
- 238000012546 transfer Methods 0.000 description 42
- 238000002474 experimental method Methods 0.000 description 21
- 238000005057 refrigeration Methods 0.000 description 16
- 238000001816 cooling Methods 0.000 description 15
- 238000012360 testing method Methods 0.000 description 13
- 230000007704 transition Effects 0.000 description 9
- 238000004378 air conditioning Methods 0.000 description 8
- 238000005119 centrifugation Methods 0.000 description 4
- 125000001475 halogen functional group Chemical group 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000739 chaotic effect Effects 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
-
- 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
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
-
- 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
- F04D29/666—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by means of rotor construction or layout, e.g. unequal distribution of blades or vanes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention discloses a kind of centrifugal wind wheel and air conditioner indoor unit, wherein the centrifugal wind wheel includes multiple fan blades of blade seat, the first air inducing circle and the connection blade seat and the first air inducing circle；The centrifugal wind wheel further includes the second air inducing circle, and the second air inducing circle is between the blade seat and the first air inducing circle, and the fan blade passes through the second air inducing circle and connect with the second air inducing circle；Wherein, the second air inducing circle has the first port and second port that are oppositely arranged, and the first port of the second air inducing circle closes on the blade seat, also, the diameter of the second air inducing circle in first port towards being gradually reduced on the direction of second port.Technical solution of the present invention improves the outlet air uniformity of centrifugal wind wheel.
Description
Technical field
The present invention relates to air-conditioning technical field, more particularly to a kind of centrifugal wind wheel and air conditioner indoor unit.
Background technology
Referring to Fig. 1, existing centrifugal wind wheel 10 ' generally comprises blade seat 20 ', the first air inducing circle 30 ' and fan blade 40 '.
Wherein, fan blade 40 ' is fixed between blade seat 20 ' and the first air inducing circle 30 ', and then when centrifugal wind wheel 10 ' rotates, air-flow from
The middle part of first air inducing circle 30 ' enters, then by the guiding of fan blade 40 ' between blade seat 20 ' and the first air inducing circle 30 '
The air duct of formation is discharged.
But above-mentioned centrifugal wind wheel 10 ' is formed by distinguished and admirable most of surface discharge for attaching blade seat 20 ', only deposits
Be discharged along the surface (towards the surface of blade seat 20 ') of the first air inducing circle 30 ' in a small amount of air-flow, so it is serious cause entirely from
The outlet air non-uniform phenomenon of heart wind wheel 10 '.
Invention content
The main object of the present invention is to provide a kind of centrifugal wind wheel, it is intended to solve the problems, such as that outlet air is non-uniform.
To achieve the above object, centrifugal wind wheel proposed by the present invention, including described in blade seat, the first air inducing circle and connection
Multiple fan blades of blade seat and the first air inducing circle；The centrifugal wind wheel further includes the second air inducing circle, the second air inducing circle
Between the blade seat and the first air inducing circle, and the fan blade passes through the second air inducing circle and with described second
Air inducing circle connects；
Wherein, the second air inducing circle has the first port and second port being oppositely arranged, the second air inducing circle
First port closes on the blade seat, also, the diameter of the second air inducing circle in first port towards the direction of second port
On be gradually reduced.
Preferably, the distance between the outer edge of the blade seat and the outer edge of the first air inducing circle are L1, described
The distance between the outer edge of second air inducing circle and the outer edge of the blade seat L2∈[1/3L1, 1/2L1]。
Preferably, the peripheral wall of the second air inducing circle in first port towards being in circular arc indent on the direction of second port.
Preferably, the radian measure alpha ∈ [π/6rad, π/3rad] of the circular arc.
Preferably, radian measure alpha=π/4rad of the circular arc.
Preferably, the quantity of the fan blade is n, and each fan blade is each formed with one with the junction of the blade seat and connect
Line, also, the connecting line of adjacent two fan blade is in angle β=360 °/n on extending direction.
Preferably, the fan blade includes the first half leaves and the second half leaves；
The first half leaf is extended by the surface of the blade seat towards the direction of the first air inducing circle；
The second half leaf connects the free end of the first half leaf and bends inwards and extend to connection described first and draw
The surface of solar or lunar halo.
Preferably, the material of the second air inducing circle is+20% glass of 80%AS plastics.
The present invention also proposes that a kind of air conditioner indoor unit, the air conditioner indoor unit include centrifugal wind wheel, the centrifugal wind wheel packet
Include blade seat, the first air inducing circle and the multiple fan blades being arranged between the blade seat and the first air inducing circle；It is described from
Heart wind wheel further includes the second air inducing circle, the second air inducing circle between the blade seat and the first air inducing circle, and
The fan blade passes through the second air inducing circle and is connect with the second air inducing circle；
Wherein, the second air inducing circle has the first port and second port being oppositely arranged, the second air inducing circle
First port closes on the blade seat, also, the diameter of the second air inducing circle in first port towards the direction of second port
On be gradually reduced.
Preferably, the air conditioner indoor unit is ceiling machine.
Technical solution of the present invention between the first air inducing circle and blade seat by having additional the second air inducing circle, wherein second
Air inducing circle has opposite a first port and second port, and the diameter of the second air inducing circle in first port towards second port
It is gradually reduced on rectangular.In turn, when centrifugal wind wheel operates, after gas enters from the middle part of the first air inducing circle, by fan blade and
Second air inducing circle is guided into, while the upper and lower layer air duct discharge being separated to form from the second air inducing circle.In this, centrifugation is effectively improved
The outlet air uniformity of wind wheel itself, while playing the effect for reducing wind noise.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
The structure shown according to these attached drawings obtains other attached drawings.
Fig. 1 is the structural schematic diagram of existing centrifugal wind wheel；
Fig. 2 is the structural schematic diagram of centrifugal wind wheel of the present invention；
Fig. 3 is the structural schematic diagram at another visual angle of centrifugal wind wheel in Fig. 2；
Fig. 4 is the side view of centrifugal wind wheel in Fig. 2, wherein arrow indicates gas flow；
Fig. 5 is the section view of centrifugal wind wheel in Fig. 4；
Fig. 6 is the speed field pattern of existing centrifugal wind wheel；
Fig. 7 is the speed field pattern of centrifugal wind wheel of the present invention.
Drawing reference numeral explanation：
| Label | Title | Label | Title |
| 10 | Centrifugal wind wheel | 20 | Blade seat |
| 21 | Wheel hub | 22 | Mounting plate |
| 30 | First air inducing circle | 40 | Fan blade |
| 41 | The first half leaves | 42 | The second half leaves |
| 50 | Second air inducing circle |
The realization, the function and the advantages of the object of the present invention will please refer to attached drawing and be described further in conjunction with the embodiments.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiment is only a part of the embodiment of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art obtained without creative efforts it is all its
His embodiment, shall fall within the protection scope of the present invention.
It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute is only used in the embodiment of the present invention
In explaining relative position relation, motion conditions etc. under a certain particular pose (as shown in the picture) between each component, if should
When particular pose changes, then directionality instruction also correspondingly changes correspondingly.
In addition, the description for being related to " first ", " second " etc. in the present invention is used for description purposes only, and should not be understood as referring to
Show or imply its relative importance or implicitly indicates the quantity of indicated technical characteristic." first ", " are defined as a result,
Two " feature can explicitly or implicitly include at least one of the features.In addition, the technical solution between each embodiment can
To be combined with each other, but must can be implemented as basis with those of ordinary skill in the art, when the combination of technical solution occurs
Conflicting or cannot achieve when, will be understood that the combination of this technical solution is not present, also not the present invention claims protection model
Within enclosing.
The present invention propose a kind of centrifugal wind wheel, include the centrifugal wind wheel air conditioner indoor unit.Wherein, air conditioner indoor unit
Can be ceiling machine, air-cooled ducted air conditioner, wall hanging machine or cabinet-type air conditioner.For the application, following the description is using ceiling machine as specific embodiment
It is introduced.
Please refer to Fig. 2 and Fig. 3, the present invention proposes a kind of centrifugal wind wheel 10, including blade seat 20, the first air inducing circle 30 and
Connect multiple fan blades 40 of the blade seat 20 and the first air inducing circle 30；The centrifugal wind wheel 10 further includes the second air inducing circle
50, the second air inducing circle 50 is located between the blade seat 20 and the first air inducing circle 30, and the fan blade 40 passes through
It the second air inducing circle 50 and is connect with the second air inducing circle 50；Wherein, the second air inducing circle 50 has and is oppositely arranged
The first port of first port and second port, the second air inducing circle 50 closes on the blade seat 20, also, described second draws
The diameter of solar or lunar halo 50 is in first port towards being gradually reduced on the direction of second port.
In the present embodiment, for convenience of describing, therefore introduction "upper", "lower" direction are illustrated, wherein "upper", "lower"
Direction instruction it is as shown in Figure 2.Specifically, the installation that blade seat 20 specifically includes wheel hub 21 and circumferentially extended towards wheel hub 21
Plate 22 (with reference to Fig. 3), wheel hub 21 is to connect the shaft of driving motor, and then driving motor operates and drives entire centrifugal wind wheel
10 rotations.Fan blade 40 is provided with multiple, and multiple fan blades 40 are arranged on mounting plate 22, and along the circumferential uniformly row of wheel hub 21
Cloth.First air inducing circle 30 is oppositely arranged with blade seat 20, and fan blade 40 has upper edge and lower ora terminalis, the upper edge and leaf of fan blade 40
Tablet seat 20 connects, and the lower ora terminalis of corresponding fan blade 40 is connect with the first air inducing circle 30, and then three (blade seat 20,40 and of fan blade
First air inducing circle 30) entirety constituted by the support of fan blade 40.Wherein, the diameter of blade seat 20 (arrive by the center of blade seat 20
The distance at edge) it is equal or close (at a distance from the center to edge of the first air inducing circle 30) with the diameter of the first air inducing circle 30, it is excellent
Select the diameter of the two equal.Wherein, the radius of blade seat 20 (or first air inducing circle 30) is 200mm~280mm, preferably
220mm~260mm, the radius of blade seat 20 uses 239mm in the present embodiment.Secondly, referring to Fig. 5, the upper end of blade seat 20
The distance between the lower end of first air inducing circle 30 L3For 150mm~190mm, preferably L3For 160mm~180mm, in the present embodiment
L3=170mm.
It can be seen from the above, when driving motor drives blade seat 20 to rotate, air-flow is flowed into from the middle part of the first air inducing circle 30,
Then it is discharged from the air duct formed between the first air inducing circle 30 and blade seat 20 by the water conservancy diversion of fan blade 40.It is considered that this is tied
The wind effect of structure is uneven, and then after centrifugal wind wheel 10 is used for air conditioner indoor unit, can seriously lead to the heat exchange of air conditioner indoor unit
Effect is uneven.Therefore, in the present embodiment, the second air inducing circle 50 is provided between the first air inducing circle 30 and blade seat 20 to improve
Drawbacks described above.Specifically, referring to Fig. 5, the second air inducing circle 50 between the first air inducing circle 30 and blade seat 20, as a result, respectively
Fan blade 40 accordingly connects the first air inducing circle 30 and blade seat 20 across the second air inducing circle 50；Meanwhile each fan blade 40 is with second
Air inducing circle 50 connects and the second air inducing circle 50 is fixed between the first air inducing circle 30 and blade seat 20.Wherein, it is contemplated that second
Air inducing circle 50 needs to make high speed rotation at work with fan blade 40, it is preferred, therefore, that being used between the second air inducing circle 50 and fan blade 40
The mode of welding connects.Secondly, the in the present embodiment second thickness for drawing point circle is 2mm~3mm (preferably 2.5mm)；Second draws
The center of solar or lunar halo 50 to outer peripheral distance be 210mm~260mm (preferably 239mm)；The height of second air inducing circle 50 is 70mm
~80mm (preferably 73.65mm).In addition, the second air inducing circle 50 has the first port (upper port) and second port being oppositely arranged
The diameter of the second air inducing circle 50 is arranged from first port towards the in order to reach preferable wind-guiding and shunting effect in (lower port)
It is gradually reduced on the direction of Two-port netwerk.
It is worth noting that, the second air inducing circle 50 is arranged between the first air inducing circle 30 and blade seat 20, is equivalent to herein
Layering setting is made into the air duct formed between first air inducing circle 30 and blade seat 20.Also, shown in Fig. 2, the first air inducing circle
30 equally have upper port and lower port, while the bore of the lower port of the first air inducing circle 30 is more than the second of the second air inducing circle 50
The bore of port.Therefore, referring to Fig. 4, when centrifugal wind wheel 10 rotates, gas is flowed into from the middle part of the first air inducing circle 30 and is centrifuged
In wind wheel 10, then under the compartmentation of the guiding of fan blade 40 and the second air inducing circle 50, portion gas is from the first air inducing circle
30 and second the air duct (lower layer air duct) that is formed between air inducing circle 50 be discharged, another part gas is then from the second air inducing circle 50 and leaf
Air duct (upper layer air duct) discharge formed between tablet seat 20.Therefore, it under the compartmentation of the second air inducing circle 50, effectively increases
The outlet air uniformity of centrifugal wind wheel 10.
Wherein, it can be seen from the above, the diameter of the second air inducing circle 50 from first port towards the direction of second port on gradually
Reduce.It should explain, in the case of being gradually reduced between the second air inducing circle 50, the peripheral wall of the first air inducing circle 30 can be in flat
It slips over and crosses, is convexly curved transition or the arc-shaped transition (as shown in Figure 5) in indent.In the present embodiment, in order to reach compared with
Big wind effect, it is preferred to use the third mode is arranged, and is also equivalent to the peripheral wall of the second air inducing circle 50 in first port direction
It is in circular arc indent on the direction of second port.Wherein, "inner" refers to the inside of centrifugal wind wheel 10, opposite "outside" be designated as from
The outside of heart wind wheel 10.
The effect that the centrifugal wind wheel 10 being added for verification after the second air inducing circle 50 is played, is now equipped with centrifugal wind wheel 10
Air conditioner indoor unit carry out outlet air test, and carry out data collection and analysis.Specific experiment is as follows：
Experiment 1：Test the distribution of 10 velocity field of centrifugal wind wheel
Illustrate first, the set-up mode of the second air inducing circle 50 in this experiment is：The peripheral wall of second air inducing circle 50 is in first
Port is towards being in circular arc indent on the direction of second port.
Outlet air detection is carried out to the centrifugal wind wheel 10 of existing centrifugal wind wheel 10 and the application, wherein the power of two wind wheels
It is identical, and other working conditions tested are also identical, and then obtain the two (centrifugation wind of existing centrifugal wind wheel and the application
The speed field pattern of wheel 10).
Referring particularly to Fig. 6 and Fig. 7, Fig. 6 is the speed field pattern of existing centrifugal wind wheel, and Fig. 7 is the centrifugation wind of the application
The speed field pattern of wheel 10.It should illustrate that there is outlet air region and relieve heat in the speed field pattern of existing centrifugal wind wheel
Region, relieve heat region are centrifugation wind by the region (referred to hereinafter as " region 1 ") that two Black ovals indicate in Fig. 6, the region 1
After wheel is mounted on air conditioner indoor unit, the present position of the heat exchanger in air conditioner indoor unit.Similarly, the speed of the application centrifugal wind wheel
Spending equally has outlet air region and relieve heat region, the region that relieve heat region is indicated by Black oval in Fig. 7 in field pattern
(referred to hereinafter as " region 2 "), the region 2 be after centrifugal wind wheel 10 is mounted on air conditioner indoor unit, the heat exchanger in air conditioner indoor unit
Present position.
As seen from Figure 6, distinguished and admirable more chaotic at region 1, or even there is the phenomenon that vortex.In turn, it is located at area
Contact of the heat exchanger with gas at domain 1 is uneven, final so that the heat transfer effect of heat exchanger is uneven and leads to heat transfer effect
It is poor.And it can be seen from figure 7 that the centrifugal wind wheel 10 that the second air inducing circle 50 is added plays greatly on the water conservancy diversion of gas
Homogenization.Specifically from the region 2 in Fig. 7 as can be seen that the gas flow in region 2 is more smooth and gas is distributed more
Uniformly, while the vortex amplitude of air-flow is smaller.Contacted between the heat exchanger and gas in region 2 as a result, extremely uniformly has in turn
Effect improves the heat transfer effect of heat exchanger, and the heat exchange efficiency of air conditioner indoor unit is greatly improved.
Experiment 2：Test the heat transfer effect of centrifugal wind wheel 10
Refrigeration experiment test is carried out under conditions of identical operating mode using four air conditioner indoor unit that power is 7000W.
First air conditioner indoor unit (the first air conditioner indoor unit of following abbreviations) is equipped with the centrifugal wind wheel 10 of the application, the centrifugal wind wheel 10
The second air inducing circle 50 peripheral wall be in indent arc-shaped transition.Second air conditioner indoor unit (the second air conditioner indoor unit of following abbreviations)
The centrifugal wind wheel 10 of the application is installed, the peripheral wall of the second air inducing circle 50 of the centrifugal wind wheel 10 is in seamlessly transit.Third platform is empty
Adjust indoor unit (following abbreviation third air conditioner indoor unit) that the centrifugal wind wheel 10 of the application is installed, the second of the centrifugal wind wheel 10 draws
The peripheral wall of solar or lunar halo 50 is convexly curved transition.4th air conditioner indoor unit (the 4th air conditioner indoor unit of following abbreviations) is then equipped with
Existing centrifugal wind wheel.In this experiment, the type of air conditioner indoor unit is indicated using K, and the 4th air conditioner indoor unit is set separately
Code name be K1, the code name of the first air conditioner is K2, the code name of the second air conditioner is K3, the code name of third air conditioner is K4。
When specific experiment, respectively by K1、K2、K3And K4Independently it is placed on four lab spaces that initial temperature is 35 DEG C
It is interior, also, adjust that set the operating temperature of four air conditioner indoor unit be identical a certain temperature value (in this experiment, respectively to each sky
Indoor unit is adjusted to carry out 5 refrigeration tests, the tune of five refrigeration sets temperature value and is respectively：30 DEG C, 28 DEG C, 25 DEG C, 20 DEG C and 18
DEG C), after air conditioner indoor unit freezes 15 minutes, respectively to K1、K2、K3And K4The temperature in lab space after refrigeration is into line number
According to acquisition, the refrigerating capacity for finally conversing each air conditioner room unit is compared.
Wherein, the initial temperature value T in lab space1It indicates, lab space of the air conditioner indoor unit refrigeration after 15 minutes
Interior temperature value T2It indicates, T1With T2Difference absolute value Δ T1It indicates, the tune of air conditioner indoor unit sets temperature value T3Table
Show.In turn, the data processing after experiment obtains table 1：
1. Δ T of table1、T3Data relationship table between K
Refering to table 1, in conjunction with the calculation formula of air conditioner refrigerating ability：Pd=Cp× m × Δ T can with learn：
Work as K1、K2、K3And K4Tune set temperature as 30 DEG C and after 15 minutes cooling times, K1Refrigerating capacity Pd1=
Cp×m×ΔT1, K2Refrigerating capacity Pd2=Cp×m×ΔT1, K3Refrigerating capacity Pd3=Cp×m×ΔT1, K4Refrigeration energy
Power Pd4=Cp×m×ΔT1.Wherein Pd is the refrigerating capacity (unit W) of air-conditioning, CpFor pressurization by compressed air specific heat capacity (fixed value：
1006), m is air quality flow (due to K1And K2Power it is equal, so the m of the two is equal, the present embodiment uses m=1.3
It is tested).After numerical value is brought into respectively
Pd1=Cp×m×ΔT1=1006 × 1.3 × 4.4=5754.32
Pd2=Cp×m×ΔT1=1006 × 1.3 × 4.8=6277.44
Pd3=Cp×m×ΔT1=1006 × 1.3 × 4.6=6015.88
Pd4=Cp×m×ΔT1=1006 × 1.3 × 4.7=6146.66
It can be obtained by the result of four formula, K2Refrigerating capacity ratio K1Refrigerating capacity be higher by 523.12W, be equivalent to
Heat transfer effect improves 9% or more；K3Refrigerating capacity ratio K1Refrigerating capacity be higher by 261.56W, be equivalent to heat transfer effect promotion
4.5% or more；K4Refrigerating capacity ratio K1Refrigerating capacity be higher by 392.34W, be equivalent to heat transfer effect improve 6.8% with
On.
Similarly, work as K1And K2Tune set temperature as 26 DEG C and after 15 minutes cooling times,
K1Refrigerating capacity Pd1=Cp×m×ΔT1=1006 × 1.3 × 7.8=10200.84
K2Refrigerating capacity Pd2=Cp×m×ΔT1=1006 × 1.3 × 8.5=11116.30
K3Refrigerating capacity Pd3=Cp×m×ΔT1=1006 × 1.3 × 8.1=10593.18
K4Refrigerating capacity Pd4=Cp×m×ΔT1=1006 × 1.3 × 8.3=10854.74
The result obtained by two formula can obtain, K2Refrigerating capacity ratio K1Refrigerating capacity be higher by 915.46W, quite
8.9% or more is improved in heat transfer effect；K3Refrigerating capacity ratio K1Refrigerating capacity be higher by 392.34W, be equivalent to heat transfer effect
Improve 3.8% or more；K4Refrigerating capacity ratio K1Refrigerating capacity be higher by 653.9W, be equivalent to heat transfer effect and improve 6.4%
More than.
Similarly, work as K1And K2Tune set temperature as 23 DEG C and after 15 minutes cooling times,
K1Refrigerating capacity Pd1=Cp×m×ΔT1=1006 × 1.3 × 10.6=13862.68
K2Refrigerating capacity Pd2=Cp×m×ΔT1=1006 × 1.3 × 11.4=14908.92
K3Refrigerating capacity Pd3=Cp×m×ΔT1=1006 × 1.3 × 10.9=14255.02
K4Refrigerating capacity Pd4=Cp×m×ΔT1=1006 × 1.3 × 11.1=14516.58
The result obtained by two formula can obtain, K2Refrigerating capacity ratio K1Refrigerating capacity be higher by 1046.24W, quite
7.5% or more is improved in heat transfer effect；K3Refrigerating capacity ratio K1Refrigerating capacity be higher by 392.34W, be equivalent to heat transfer effect
Improve 2.8% or more；K4Refrigerating capacity ratio K1Refrigerating capacity be higher by 653.9W, be equivalent to heat transfer effect and improve 4.7%
More than.
Similarly, work as K1And K2Tune set temperature as 20 DEG C and after 15 minutes cooling times,
K1Refrigerating capacity Pd1=Cp×m×ΔT1=1006 × 1.3 × 13.2=17262.96
K2Refrigerating capacity Pd2=Cp×m×ΔT1=1006 × 1.3 × 14.0=18309.20
K3Refrigerating capacity Pd3=Cp×m×ΔT1=1006 × 1.3 × 13.5=17655.30
K4Refrigerating capacity Pd4=Cp×m×ΔT1=1006 × 1.3 × 13.7=17916.86
The result obtained by two formula can obtain, K2Refrigerating capacity ratio K1Refrigerating capacity be higher by 1046.24W, quite
6% or more is improved in heat transfer effect；K3Refrigerating capacity ratio K1Refrigerating capacity be higher by 392.35W, be equivalent to heat transfer effect and carry
Rise 2.2% or more；K4Refrigerating capacity ratio K1Refrigerating capacity be higher by 653.9W, be equivalent to heat transfer effect improve 3.7% with
On.
Similarly, work as K1And K2Tune set temperature as 18 DEG C and after 15 minutes cooling times,
K1Refrigerating capacity Pd1=Cp×m×ΔT1=1006 × 1.3 × 15.0=19617.00
K2Refrigerating capacity Pd2=Cp×m×ΔT1=1006 × 1.3 × 15.8=20663.24
K3Refrigerating capacity Pd3=Cp×m×ΔT1=1006 × 1.3 × 15.4=20140.12
K4Refrigerating capacity Pd4=Cp×m×ΔT1=1006 × 1.3 × 15.6=20401.68
The result obtained by two formula can obtain, K2Refrigerating capacity ratio K1Refrigerating capacity be higher by 1046.24W, quite
5% or more is improved in heat transfer effect；K3Refrigerating capacity ratio K1Refrigerating capacity be higher by 523.12W, be equivalent to heat transfer effect and carry
Rise 2.6% or more；K4Refrigerating capacity ratio K1Refrigerating capacity be higher by 784.68W, be equivalent to heat transfer effect improve 4% with
On.
To sum up 5 groups of data obtain, K2、K3And K4Heat transfer effect compare K1Heat transfer effect it is high.Thus it effectively confirms,
The centrifugal wind wheel 10 of the application effectively increases the heat transfer effect of air conditioner indoor unit on the basis of playing uniform air draft.Especially
, K2Heat transfer effect ratio K1Heat transfer effect be at least higher by 5%, highest can promote 9% or more.As a result, when the second air inducing circle
When periphery is in the arc-shaped transition of indent, the heat exchange efficiency of centrifugal wind wheel is best.
Experiment 3：Test the heat transfer effect of centrifugal wind wheel 10
Illustrate first, the set-up mode of the second air inducing circle 50 in this experiment is：The peripheral wall of second air inducing circle 50 is in indent
Arc-shaped transition.
Refrigeration experiment test is carried out under conditions of identical operating mode using two air conditioner indoor unit that power is 10500W,
Wherein an air conditioner indoor unit is equipped with the centrifugal wind wheel 10 of the application, and another is then equipped with existing centrifugal wind wheel.This reality
In testing, the type of air conditioner indoor unit is indicated using K, and set the code name of the air conditioner indoor unit for being equipped with existing centrifugal wind wheel as
K5, and the code name for being equipped with the air conditioner indoor unit of the centrifugal wind wheel 10 of the application is K6。
When specific experiment, respectively by K5And K6Independently being placed on initial temperature is in 35 DEG C of two lab spaces, and
And the operating temperature for setting two air conditioner indoor unit is identical a certain temperature value (in this experiment, respectively in each air conditioning chamber
Machine carries out 5 refrigeration tests, and the tune of five refrigeration sets temperature value and is respectively：30 DEG C, 28 DEG C, 25 DEG C, 20 DEG C and 18 DEG C), wait for sky
Adjust indoor mechanism cold after 15 minutes, respectively to K5And K6Temperature in lab space after refrigeration carries out data acquisition, finally converts
The refrigerating capacity for going out each air conditioner room unit is compared.
Wherein, the initial temperature value T in lab space4It indicates, lab space of the air conditioner indoor unit refrigeration after 15 minutes
Interior temperature value T5It indicates, T4With T5Difference absolute value Δ T2It indicates, the tune of air conditioner indoor unit sets temperature value T6Table
Show.In turn, the data processing after experiment obtains table 2：
2. Δ T of table2、T6Data relationship table between K
Refering to table 1, in conjunction with the calculation formula of air conditioner refrigerating ability：Pd=Cp× m × Δ T can with learn：
Work as K5And K6Tune set temperature as 30 DEG C and after 15 minutes cooling times, K5Refrigerating capacity Pd5=Cp×m×
ΔT2, K6Refrigerating capacity Pd6=Cp×m×ΔT2.Wherein Pd is the refrigerating capacity (unit W) of air-conditioning, CpFor pressurization by compressed air
Specific heat capacity (fixed value：1006), m is air quality flow (due to K5And K6Power it is equal, so the m of the two is equal, this reality
It applies example to be tested using m=1.3).After numerical value is brought into respectively
Pd5=Cp×m×ΔT2=1006 × 1.3 × 4.5=5885.10
Pd6=Cp×m×ΔT2=1006 × 1.3 × 5.1=6669.78
The result obtained by two formula can obtain, K6Refrigerating capacity ratio K5Refrigerating capacity be higher by 784.68W, quite
13% or more is improved in heat transfer effect.
Similarly, work as K5And K6Tune set temperature as 26 DEG C and after 15 minutes cooling times,
K5Refrigerating capacity Pd5=Cp×m×ΔT2=1006 × 1.3 × 7.9=10331.62
K6Refrigerating capacity Pd6=Cp×m×ΔT2=1006 × 1.3 × 8.7=11377.86
The result obtained by two formula can obtain, K6Refrigerating capacity ratio K5Refrigerating capacity be higher by 1046.24W, quite
10% or more is improved in heat transfer effect.
Similarly, work as K5And K6Tune set temperature as 23 DEG C and after 15 minutes cooling times,
K5Refrigerating capacity Pd5=Cp×m×ΔT2=1006 × 1.3 × 10.6=13862.68
K6Refrigerating capacity Pd6=Cp×m×ΔT2=1006 × 1.3 × 11.5=15039.70
The result obtained by two formula can obtain, K6Refrigerating capacity ratio K5Refrigerating capacity be higher by 1177.02W, quite
8% or more is improved in heat transfer effect.
Similarly, work as K5And K6Tune set temperature as 20 DEG C and after 15 minutes cooling times,
K5Refrigerating capacity Pd5=Cp×m×ΔT2=1006 × 1.3 × 13.4=17524.52
K6Refrigerating capacity Pd6=Cp×m×ΔT2=1006 × 1.3 × 14.1=18439.98
The result obtained by two formula can obtain, K6Refrigerating capacity ratio K5Refrigerating capacity be higher by 915.46W, quite
5% or more is improved in heat transfer effect.
Similarly, work as K5And K6Tune set temperature as 18 DEG C and after 15 minutes cooling times,
K5Refrigerating capacity Pd5=Cp×m×ΔT2=1006 × 1.3 × 15.2=19878.56
K6Refrigerating capacity Pd6=Cp×m×ΔT2=1006 × 1.3 × 16.0=20924.80
The result obtained by two formula can obtain, K6Refrigerating capacity ratio K5Refrigerating capacity be higher by 1046.24W, quite
5% or more is improved in heat transfer effect.
To sum up 5 groups of data obtain, K6Heat transfer effect ratio K5Heat transfer effect be at least higher by 5%, highest can be promoted 13% with
On.It effectively confirms as a result, the centrifugal wind wheel 10 of the application effectively increases on the basis of playing uniform air draft in air conditioning chamber
The heat transfer effect of machine.
Experiment 4：Test the heat transfer effect of centrifugal wind wheel 10
Illustrate first, the set-up mode of the second air inducing circle 50 in this experiment is：The peripheral wall of second air inducing circle 50 is in indent
Arc-shaped transition.
Refrigeration experiment test is carried out under conditions of identical operating mode using two air conditioner indoor unit that power is 16000W,
Wherein an air conditioner indoor unit is equipped with the centrifugal wind wheel 10 of the application, and another is then equipped with existing centrifugal wind wheel.This reality
In testing, the type of air conditioner indoor unit is indicated using K, and set the code name of the air conditioner indoor unit for being equipped with existing centrifugal wind wheel as
K7, and the code name for being equipped with the air conditioner indoor unit of the centrifugal wind wheel 10 of the application is K8。
When specific experiment, respectively by K7And K8Independently being placed on initial temperature is in 35 DEG C of two lab spaces, and
And the operating temperature for setting two air conditioner indoor unit is identical a certain temperature value (in this experiment, respectively in each air conditioning chamber
Machine carries out 5 refrigeration tests, and the tune of five refrigeration sets temperature value and is respectively：30 DEG C, 28 DEG C, 25 DEG C, 20 DEG C and 18 DEG C), wait for sky
Adjust indoor mechanism cold after 15 minutes, respectively to K7And K8Temperature in lab space after refrigeration carries out data acquisition, finally converts
The refrigerating capacity for going out each air conditioner room unit is compared.
Wherein, the initial temperature value T in lab space7It indicates, lab space of the air conditioner indoor unit refrigeration after 15 minutes
Interior temperature value T8It indicates, T7With T8Difference absolute value Δ T3It indicates, the tune of air conditioner indoor unit sets temperature value T9Table
Show.In turn, the data processing after experiment obtains table 3：
3. Δ T of table3、T9Data relationship table between K
Refering to table 1, in conjunction with the calculation formula of air conditioner refrigerating ability：Pd=Cp× m × Δ T can with learn：
Work as K7And K8Tune set temperature as 30 DEG C and after 15 minutes cooling times, K7Refrigerating capacity Pd7=Cp×m×
ΔT3, K8Refrigerating capacity Pd8=Cp×m×ΔT3.Wherein Pd is the refrigerating capacity (unit W) of air-conditioning, CpFor pressurization by compressed air
Specific heat capacity (fixed value：1006), m is air quality flow (due to K7And K8Power it is equal, so the m of the two is equal, this reality
It applies example to be tested using m=1.3).After numerical value is brought into respectively
Pd7=Cp×m×ΔT3=1006 × 1.3 × 4.9=6408.22
Pd8=Cp×m×ΔT3=1006 × 1.3 × 5.2=6800.56
The result obtained by two formula can obtain, K8Refrigerating capacity ratio K7Refrigerating capacity be higher by 392.34W, quite
6% or more is improved in heat transfer effect.
Similarly, work as K7And K8Tune set temperature as 26 DEG C and after 15 minutes cooling times,
K7Refrigerating capacity Pd7=Cp×m×ΔT3=1006 × 1.3 × 8.5=11116.30
K8Refrigerating capacity Pd8=Cp×m×ΔT3=1006 × 1.3 × 9=11770.20
The result obtained by two formula can obtain, K8Refrigerating capacity ratio K7Refrigerating capacity be higher by 653.9W, be equivalent to
Heat transfer effect improves 5.8% or more.
Similarly, work as K7And K8Tune set temperature as 23 DEG C and after 15 minutes cooling times,
K7Refrigerating capacity Pd7=Cp×m×ΔT3=1006 × 1.3 × 11=14385.80
K8Refrigerating capacity Pd8=Cp×m×ΔT3=1006 × 1.3 × 11.6=15170.48
The result obtained by two formula can obtain, K8Refrigerating capacity ratio K7Refrigerating capacity be higher by 784.68W, quite
5.4% or more is improved in heat transfer effect.
Similarly, work as K7And K8Tune set temperature as 20 DEG C and after 15 minutes cooling times,
K7Refrigerating capacity Pd7=Cp×m×ΔT3=1006 × 1.3 × 13.5=17655.30
K8Refrigerating capacity Pd8=Cp×m×ΔT3=1006 × 1.3 × 14.2=18570.76
The result obtained by two formula can obtain, K8Refrigerating capacity ratio K7Refrigerating capacity be higher by 915.46W, quite
5% or more is improved in heat transfer effect.
Similarly, work as K7And K8Tune set temperature as 18 DEG C and after 15 minutes cooling times,
K7Refrigerating capacity Pd7=Cp×m×ΔT3=1006 × 1.3 × 15.2=19878.56
K8Refrigerating capacity Pd8=Cp×m×ΔT3=1006 × 1.3 × 16.2=21186.36
The result obtained by two formula can obtain, K8Refrigerating capacity ratio K7Refrigerating capacity be higher by 1307.8W, quite
6.5% or more is improved in heat transfer effect.
To sum up 5 groups of data obtain, K8Heat transfer effect ratio K7Heat transfer effect be at least higher by 5%, highest can promote 6.5%
More than.It effectively confirms as a result, the centrifugal wind wheel 10 of the application effectively increases air conditioning chamber on the basis of playing uniform air draft
The heat transfer effect of interior machine.
Technical solution of the present invention by having additional the second air inducing circle 50 between the first air inducing circle 30 and blade seat 20,
In, the second air inducing circle 50 has opposite first port and second port, and the diameter of the second air inducing circle 50 is in first port court
To second port it is rectangular on be gradually reduced.In turn, when centrifugal wind wheel 10 operates, gas from the middle part of the first air inducing circle 30 into
After entering, pass through the upper and lower layer air duct row for guiding into, while being separated to form from the second air inducing circle 50 of fan blade 40 and the second air inducing circle 50
Go out.In this, the outlet air uniformity of centrifugal wind wheel 10 itself is effectively improved, while playing the effect for reducing wind noise.
Further, referring to Fig. 5, between the outer edge of the blade seat 20 and the outer edge of the first air inducing circle 30
Distance be L1, the distance between the outer edge of the second air inducing circle 50 and the outer edge of the blade seat 20 L2∈[1/3L1,
1/2L1].It should be understood that in order to play better uniform air-out effect, in the present embodiment, the setting of the second air inducing circle 50 is existed
The middle part of first air inducing circle 30 and blade seat 20, to realize said effect.In the present embodiment, preferably L2=1/2L1。
On the basis of a upper embodiment, the peripheral wall of the second air inducing circle 50 is in the arc-shaped transition of indent, and then please refers to figure
5, transition angle (radian) the α ∈ [π/6rad, π/3rad] of the peripheral wall of the second air inducing circle 50.If it should be understood that radian measure alpha setting compared with
It is big or smaller, it can significantly influence the wind effect of the second air inducing circle 50.In the present embodiment, preferably radian measure alpha=π/4rad.
Further, the quantity of the fan blade 40 is n, and each fan blade 40 and the junction of the blade seat 20 are respectively formed
There is a connecting line, also, the connecting line of adjacent two fan blade 40 is in angle β=360 °/n on extending direction.
Specifically, the upper edge of fan blade 40 is connect with blade seat 20, and fan blade 40 and the connecting line of blade seat 20 are linear
Setting.In turn, the extended line of the connecting line of two neighboring blade is in intersection, wherein the angle after intersection is β.Secondly, originally
In embodiment, the quantity of fan blade 40 is provided with 7, thus β=360 °/7.Certainly, the quantity portion of blade is confined to 7, also may be used
To be 4,5,6 or 8 etc..
In a further preferred embodiment, referring to Fig. 3, the fan blade 40 includes the first half leaves 41 and the second half leaves 42；Institute
The first half leaves 41 are stated by the surface of the blade seat 20 to be extended towards the direction of the first air inducing circle 30；The second half leaf 42
It connects the free end of the first half leaf 41 and bends inwards and extend to the surface for connecting the first air inducing circle 30.Specific solution
It releases, fan blade 40 has the leading edge for closing on 50 middle part of the second air inducing circle, and the trailing edge far from the second air inducing circle 50.This
In embodiment, the trailing edge of fan blade 40 is made fold-line-shaped setting by the second half leaves 42 of fan blade 40 in the setting that bends inwards to be equivalent to,
And then it effectively improves the air output of fan blade 40 and improves the air-supply uniformity of fan blade 40.
In another embodiment, the material of the second air inducing circle 50 is+20% glass of 80%AS plastics.It is appreciated that
, the second air inducing circle 50 needs high speed rotation during the work time, and then to the intensity of own material (intensity is high) and weight (weight
Measure small) it is high quality demand.Therefore, in the present embodiment, the material of the second air inducing circle 50 of setting is+20% glass of 80%AS plastics
Fibre, to meet the work requirements of the second air inducing circle 50.Certainly, user can be more different demand and match AS plastic and glass
Ratio, preferably the accounting of AS plastic be 75%~82%.
The foregoing is merely the preferred embodiment of the present invention, are not intended to limit the scope of the invention, every at this
Under the inventive concept of invention, using equivalent structure transformation made by description of the invention and accompanying drawing content, or directly/use indirectly
In the scope of patent protection that other related technical areas are included in the present invention.
Claims (10)
1. a kind of centrifugal wind wheel, including blade seat, the first air inducing circle and the connection blade seat and the first air inducing circle
Multiple fan blades；It is characterized in that, the centrifugal wind wheel further includes the second air inducing circle, the second air inducing circle is located at the blade seat
Between the first air inducing circle, the fan blade passes through the second air inducing circle and is connect with the second air inducing circle；
Wherein, the second air inducing circle has the first port and second port that are oppositely arranged, and the first of the second air inducing circle
The blade seat is closed in port, also, the diameter of the second air inducing circle in first port towards on the direction of second port by
It is decrescence small.
2. centrifugal wind wheel as described in claim 1, which is characterized in that the outer edge of the blade seat and the first air inducing circle
The distance between outer edge be L1, the distance between the outer edge of the second air inducing circle and the outer edge of the blade seat are
L2, L2∈[1/3L1, 1/2L1]。
3. centrifugal wind wheel as described in claim 1, which is characterized in that the peripheral wall of the second air inducing circle is in the first port
It is in circular arc indent on towards the direction of the second port.
4. centrifugal wind wheel as claimed in claim 3, which is characterized in that the radian measure alpha ∈ [π/6rad, π/3rad] of the circular arc.
5. centrifugal wind wheel as claimed in claim 4, which is characterized in that radian measure alpha=π/4rad of the circular arc.
6. centrifugal wind wheel as described in claim 1, which is characterized in that the quantity of the fan blade be n, each fan blade with it is described
The junction of blade seat is each formed with a connecting line, also, the connecting line of adjacent two fan blade is in the angle β on extending direction
=360 °/n.
7. centrifugal wind wheel as described in claim 1, which is characterized in that the fan blade includes the first half leaves and the second half leaves；
The first half leaf is extended by the surface of the blade seat towards the direction of the first air inducing circle；
The second half leaf connects the free end of the first half leaf and bends inwards and extend to connection the first air inducing circle
Surface.
8. centrifugal wind wheel as described in claim 1, which is characterized in that the material of the second air inducing circle be 80%AS plastics+
20% glass.
9. a kind of air conditioner indoor unit, which is characterized in that the air conditioner indoor unit includes as described in claim 1 to 8 any one
Centrifugal wind wheel.
10. air conditioner indoor unit as claimed in claim 9, which is characterized in that the air conditioner indoor unit is ceiling machine.
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ID=63235559
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