CN109958639B - Fan assembly of air conditioner outdoor unit and air conditioner outdoor unit with same - Google Patents
Fan assembly of air conditioner outdoor unit and air conditioner outdoor unit with same Download PDFInfo
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- CN109958639B CN109958639B CN201910325372.4A CN201910325372A CN109958639B CN 109958639 B CN109958639 B CN 109958639B CN 201910325372 A CN201910325372 A CN 201910325372A CN 109958639 B CN109958639 B CN 109958639B
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- 238000011144 upstream manufacturing Methods 0.000 claims description 9
- 238000005265 energy consumption Methods 0.000 abstract description 7
- 230000000712 assembly Effects 0.000 description 8
- 238000000429 assembly Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 230000009471 action Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 5
- 238000009423 ventilation Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 238000010835 comparative analysis Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000011295 pitch Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- 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
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/16—Combinations of two or more pumps ; Producing two or more separate gas flows
- F04D25/166—Combinations of two or more pumps ; Producing two or more separate gas flows using fans
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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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/325—Rotors specially for elastic fluids for axial flow pumps for axial flow fans
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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
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/54—Fluid-guiding means, e.g. diffusers
- F04D29/541—Specially adapted for elastic fluid pumps
- F04D29/545—Ducts
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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
- 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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- 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
- F04D29/667—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by influencing the flow pattern, e.g. suppression of turbulence
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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
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/38—Fan details of outdoor units, e.g. bell-mouth shaped inlets or fan mountings
-
- 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
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/40—Vibration or noise prevention at outdoor units
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Wind Motors (AREA)
Abstract
The invention discloses a fan assembly of an air conditioner outdoor unit and the air conditioner outdoor unit with the same, wherein the fan assembly comprises: a first wind wheel, a second wind wheel, and a drive assembly. In the direction of circulation of air current, the second wind wheel is located the low reaches of first wind wheel, and drive assembly cooperates with first wind wheel and second wind wheel respectively in order to drive first wind wheel and second wind wheel rotatory, and wherein, the rotational speed ratio between first wind wheel and the second wind wheel is 0.8 ~ 1.25. According to the fan assembly of the air conditioner outdoor unit, the first wind wheel and the second wind wheel which are distributed at intervals in the air flow circulation direction are arranged, so that the air supply efficiency of the fan assembly can be improved, the energy consumption can be reduced, and the practicability of the fan assembly is greatly improved. The rotating speed ratio between the first wind wheel and the second wind wheel is controlled to be 0.8-1.25, noise generated by the fan assembly can be greatly reduced, and therefore the use comfort of a user can be improved.
Description
Technical Field
The invention relates to the field of air treatment equipment, in particular to a fan assembly of an air conditioner outdoor unit and the air conditioner outdoor unit with the fan assembly.
Background
In the related art, a fan assembly is disposed in an outdoor unit of an air conditioner, and the fan assembly can guide outdoor air to circulate so as to exchange heat between outdoor air and an outdoor heat exchanger. However, the fan assembly generates a large amount of noise during operation, thereby affecting the comfort of the user.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, an object of the present invention is to provide a fan assembly of an outdoor unit of an air conditioner, which has advantages of high air supply efficiency and low noise generation.
The invention also provides an air conditioner outdoor unit with the fan assembly.
According to the embodiment of the invention, the fan assembly of the outdoor unit of the air conditioner comprises: a first wind wheel; a second wind wheel located downstream of the first wind wheel in a direction of circulation of the air flow; the driving assembly is matched with the first wind wheel and the second wind wheel respectively so as to drive the first wind wheel and the second wind wheel to rotate; wherein the rotating speed ratio between the first wind wheel and the second wind wheel is 0.8-1.25.
According to the fan assembly of the air conditioner outdoor unit, the first wind wheel and the second wind wheel which are arranged in the air flow circulation direction at intervals can play double roles of improving air supply efficiency and reducing energy consumption, and the practical performance of the fan assembly can be improved. The rotating speed ratio between the first wind wheel and the second wind wheel is controlled to be 0.8-1.25, noise generated by the fan assembly can be greatly reduced, and therefore the use comfort of a user can be improved.
According to some embodiments of the invention, the rotation speed ratio between the first wind wheel and the second wind wheel is 0.9-1.1.
According to some embodiments of the invention, the drive assembly comprises: the first motor is connected with the first wind wheel so as to drive the first wind wheel to rotate; the second motor is connected with the second wind wheel to drive the second wind wheel to rotate; and the first motor and the second motor are respectively arranged on the motor support.
According to some embodiments of the invention, the drive assembly comprises: the double-shaft motor is provided with a first motor shaft and a second motor shaft, the first motor shaft is connected with the first wind wheel, and the second motor shaft is connected with the second wind wheel; the motor support, the biax motor is established on the motor support.
According to some embodiments of the invention, the fan assembly further comprises: the wind guide device comprises two wind guide rings, wherein a wind guide space is defined in each wind guide ring, and at least one part of the first wind wheel and at least one part of the second wind wheel are arranged in the corresponding wind guide space.
In some embodiments of the invention, the wind guide ring is sleeved outside the first wind wheel and is arranged at an interval with the first wind wheel, and the diameter of the first wind wheel is D1The radial clearance between the wind guide ring and the first wind wheel is 0.01D1～0.03D1。
In some embodiments of the invention, the wind guide ring is sleeved outside the second wind wheel and is arranged at an interval with the second wind wheel, and the diameter of the second wind wheel is D2The radial clearance between the wind guide ring and the second wind wheel is 0.01D2～0.03D2。
In some embodiments of the present invention, the air inlet end of the air guiding ring is provided with a first flared portion, and the first flared portion extends toward a direction close to the central axis of the air guiding ring along the flowing direction of the air flow.
In some embodiments of the present invention, the air outlet end of the air guiding ring is provided with a second flared portion, and the second flared portion extends toward a direction away from the central axis of the air guiding ring along the flowing direction of the air flow.
In some embodiments of the invention, the two wind guide rings are formed as an integral piece.
In some embodiments of the present invention, two of the wind guiding rings are disposed at an interval, and the fan assembly further includes: and at least one air guide ring is arranged on the air duct mounting plate.
In some embodiments of the invention, at least one of the wind-guiding rings and the wind duct mounting plate are formed as an integral part.
An outdoor unit of an air conditioner according to an embodiment of the present invention includes: the air conditioner comprises a shell, wherein an air inlet and an air outlet are formed in the shell; the outdoor heat exchanger is arranged in the shell; according to the fan assembly of the outdoor unit of the air conditioner in the embodiment of the invention, the fan assembly is arranged in the casing.
According to the air conditioner outdoor unit provided by the embodiment of the invention, through the arrangement of the fan assembly, the fan assembly not only has high air supply efficiency and low power consumption, but also has low working noise generated by the fan assembly, so that the energy consumption of the air conditioner outdoor unit can be reduced, the working noise of the air conditioner outdoor unit can be reduced, and the use comfort of a user is greatly improved.
According to some embodiments of the invention, the outdoor heat exchanger is located upstream of the fan assembly and is disposed opposite to the first wind wheel in a circulating direction of the air flow.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a front view of a fan assembly according to an embodiment of the present invention;
FIG. 2 is a schematic view of a fit of a first wind rotor and a second wind rotor according to an embodiment of the invention;
FIG. 3 is a schematic view of a fan assembly and an outdoor heat exchanger according to an embodiment of the present invention;
fig. 4 is a schematic view of a matching structure of the wind guide ring and the first wind wheel or the second wind wheel according to the embodiment of the invention;
fig. 5 is a schematic structural view of an outdoor unit of an air conditioner according to an embodiment of the present invention;
FIG. 6 is a cross-sectional view taken along line A-A of FIG. 5;
FIG. 7 is a sectional view taken in the direction B-B in FIG. 5;
FIG. 8 is a graph of the amount of noise generated by a fan assembly according to an embodiment of the present invention at different wind volumes as a function of the gap L between the first rotor and the second rotor0A graph of variation of (a);
FIG. 9 is a graph illustrating the effect of a fan assembly on the airflow without and without a wind deflector in accordance with an embodiment of the present invention;
FIG. 10 is a graph illustrating the noise impact of a fan assembly according to an embodiment of the present invention with or without a wind deflector.
Reference numerals:
an outdoor unit of an air conditioner (100),
a machine shell 1, an air inlet 1a, an air outlet 1b,
a driving unit 3, a first motor 31, a second motor 32, a motor bracket 33, a support plate 331, a first mounting groove 331a, a second mounting groove 331b,
a wind guide ring 4, a first flared part 41, a second flared part 42, a straight cylinder section 43,
an air duct mounting plate (5) is provided,
an outdoor heat exchanger 6.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
The fan assembly 2 of the outdoor unit 100 of the air conditioner according to the embodiment of the present invention will be described with reference to the accompanying drawings.
As shown in fig. 1 to 3, the fan assembly 2 of the outdoor unit 100 of the air conditioner according to the embodiment of the present invention includes: a first wind rotor 21, a second wind rotor 22 and a drive assembly 3.
Wherein the first wind wheel 21 includes a plurality of first blades 211 spaced apart in a circumferential direction thereof, and the second wind wheel 22 includes a plurality of second blades 221 spaced apart in a circumferential direction thereof. In the direction of circulation of the air flow, the second wind wheel 22 may be located downstream of the first wind wheel 21 and the second wind wheel 22 may be spaced apart from the first wind wheel 21. Drive assembly 3 may cooperate with first and second rotors 21 and 22, respectively, to drive rotation of first and second rotors 21 and 22.
Specifically, since the first wind wheel 21 and the second wind wheel 22 may be disposed oppositely in the direction of airflow circulation, the first wind wheel 21 and the second wind wheel 22 may form a pair-rotating wind wheel, and both the first wind wheel 21 and the second wind wheel 22 may be axial-flow wind wheels. When the fan assembly 2 is in operation, the driving assembly 3 can respectively drive the first wind wheel 21 and the second wind wheel 22 to rotate, and the rotating directions of the first wind wheel 21 and the second wind wheel 22 can be opposite. Therefore, the airflow circumferential tangential velocity of the blade outlets of the first blades 211 is opposite to the airflow circumferential tangential velocity of the blade outlets of the second blades 221 and can be partially or completely offset, so that a nearly pure axial straight airflow can be obtained, that is, most or even all of the air airflow can be blown out along the axial direction of the fan assembly 2, and therefore the air supply amount and the air supply distance of the fan assembly 2 can be increased, and the air supply efficiency of the fan assembly 2 can be improved.
It can be understood that, compared with a single cross-flow wind wheel, axial-flow wind wheel or diagonal-flow wind wheel, the first wind wheel 21 and the second wind wheel 22 in the counter-rotating wind wheel can rotate simultaneously, so that the air supply quantity of the counter-rotating wind wheel is the maximum and the air supply efficiency is the highest on the premise that the driving assembly 3 consumes the same power. Therefore, on the premise of meeting the same air supply quantity requirement, the power consumption of the cyclone wheel is lowest. Therefore, the fan assembly 2 has the advantage of low energy consumption, and the practicability of the fan assembly 2 is greatly improved.
Wherein, the rotating speed ratio between the first wind wheel 21 and the second wind wheel 22 can be 0.8-1.25. Specifically, when a contra-rotating wind wheel is arranged in the fan assembly 2, the working noise generated by the fan assembly 2 is mainly determined by the wind wheel generating the largest noise. Moreover, the noise generated by the fan assembly 2 has a positive correlation with the rotation speed of the first wind wheel 21 and the second wind wheel 22. When the rotating speed ratio between the first wind wheel 21 and the second wind wheel 22 is 0.8-1.25, the rotating speed difference between the first wind wheel 21 and the second wind wheel 22 is small, noise generated by the first wind wheel 21 and the second wind wheel 22 is small, and the working noise of the fan assembly 2 is the sum of the noise generated by the first wind wheel 21 and the noise generated by the second wind wheel 22. On the contrary, when the rotation speed ratio between the first wind wheel 21 and the second wind wheel 22 is less than 0.8 or greater than 1.25, the rotation speed difference between the first wind wheel 21 and the second wind wheel 22 is large, at this time, the wind wheel with the large rotation speed in the first wind wheel 21 and the second wind wheel 22 becomes a main noise source and generates a large noise, and at this time, the noise generated by the fan assembly 2 mainly depends on the noise generated by the main noise source. Therefore, on the premise that the fan assembly 2 generates the same air volume, the noise generated when the rotational speed difference between the first wind wheel 21 and the second wind wheel 22 is large is far greater than the noise generated when the rotational speed difference between the first wind wheel 21 and the second wind wheel 22 is small. From this, through the rotational speed ratio of controlling between first wind wheel 21 and the second wind wheel 22 be 0.8 ~ 1.25, the noise that can greatly reduced fan subassembly 2 produced can promote user's use comfort.
According to the fan assembly 2 of the outdoor unit 100 of the air conditioner of the embodiment of the present invention, the first wind wheel 21 and the second wind wheel 22 which are arranged in the air flow direction at intervals are used to increase the air supply efficiency of the fan assembly 2, so that the energy consumption can be reduced, and the practicability of the fan assembly 2 is greatly improved. The rotating speed ratio between the first wind wheel 21 and the second wind wheel 22 is controlled to be 0.8-1.25, noise generated by the fan assembly 2 can be greatly reduced, and therefore the use comfort of a user can be improved.
According to some embodiments of the present invention, the rotation speed ratio between the first wind wheel 21 and the second wind wheel 22 may be 0.9 to 1.1, so that the rotation speed difference between the first wind wheel 21 and the second wind wheel 22 may be further reduced, and thus the noise generated by the fan assembly 2 may be further reduced. Alternatively, the rotation speed ratio between the first wind wheel 21 and the second wind wheel 22 may be 1.0, that is, the rotation speeds of the first wind wheel 21 and the second wind wheel 22 are the same, so that the first wind wheel 21 and the second wind wheel 22 can keep rotating at the same speed, and the operation noise of the fan assembly 2 can be greatly reduced.
As shown in fig. 2, according to some embodiments of the present invention, the first wind wheel 21 may have an extension length L in its axial direction (the front-rear direction shown in fig. 2)1The second wind wheel 22 may have an extension length L in its axial direction2Distance L between first rotor 21 and second rotor 220The relation can be satisfied: 0.2 (L)1+L2)≤L0≤1.5(L1+L2). Specifically, when the fan assembly 2 rotates, the tails of the first blade 211 and the second blade 221 form tip leakage vortex due to the rotating wind, wherein the tail of the first blade 211 can be understood as the portion of the first blade 211 close to the second blade 221, and the tail of the second blade 221 can be understood as the portion of the second blade 221 far from the first blade 211. The tip leakage vortex generated from the first blade 211 collides with the second blade 221 when passing through the second wind rotor 22, thereby generating relatively large noise.
It will be understood that when L is0＜0.2(L1+L2) When the distance between the first wind wheel 21 and the second wind wheel 22 is small, the tip leakage vortex can flow to the second wind wheel 22 in a short time after being generated, and thus the impact force acting on the second blade 221 is large, thereby generating large noise. When L is0＞1.5(L1+L2) In the meantime, the distance between the first wind wheel 21 and the second wind wheel 22 is too large, and the loss of the circulation speed of the airflow generated by the first wind wheel 21 is large, thereby reducing the air supply efficiency of the fan assembly 2. When 0.2 (L)1+L2)≤L0≤1.5(L1+L2) The distance between the first wind wheel 21 and the second wind wheel 22 is set reasonably, and the strength of the tip leakage vortex generated by the first blade 211 is reduced in the process of flowing from the first wind wheel 21 to the second wind wheel 22, so that the impact force acting on the second blade 221 can be reduced, and the noise generated by the fan assembly 2 can be reduced. Moreover, at this time, the distance between the first wind wheel 21 and the second wind wheel 22 has a small influence on the air supply speed of the fan assembly 2, so that the air supply efficiency of the fan assembly 2 can be ensured.
In the specific example shown in fig. 8, the extension L of the first wind wheel 21 in its axial direction160mm, the extension L of the second wind wheel 22 in its axial direction2The distance between the first wind wheel 21 and the second wind wheel 22 is controlled (L) to be 40mm0＝20mm、L0＝30mm、L040mm) and detects the amount of noise generated by the fan assembly 2 at different pitches. As can be seen from the graph shown in fig. 8, L is the same amount of air generated by the fan assembly 2020mm or L0＝0.2(L1+L2) The maximum noise produced by the time fan assembly 2, L030mm or L0＝0.3(L1+L2) The noise generated by the fan assembly 2 is compared to L0＝0.2(L1+L2) The noise generated is greatly reduced, and the noise is reduced by about 2.0dB (A). L is040mm or L0＝0.4(L1+L2) The noise generated by the fan assembly 2 is minimal, L0＝0.3(L1+L2) To L0＝0.4(L1+L2) The reduction range of the noise is far less than L0＝0.2(L1+L2) To L0＝0.3(L1+L2) The noise reduction amplitude in between.
As shown in fig. 3, according to some embodiments of the present invention, the driving assembly 3 may include a first motor 31, a second motor 32, and a motor bracket 33, the first motor 31 and the second motor 32 may be respectively disposed on the motor bracket 33, the first motor 31 may be connected to the first wind wheel 21 to drive the first wind wheel 21 to rotate, and the second motor 32 may be connected to the second wind wheel 22 to drive the second wind wheel 22 to rotate. Thus, with the above arrangement, the first motor 31 and the second motor 32 can be controlled to control the operating states (rotation direction, rotation speed, etc.) of the first wind wheel 21 and the second wind wheel 22, respectively, and the operation of the fan assembly 2 can be made more convenient.
Optionally, the first motor 31 and the second motor 32 may be step motors, and the step motors have the advantages of stable operation and accurate control of the rotation direction and rotation number thereof, and can improve the air supply stability of the fan assembly 2.
Alternatively, the first motor 31 may be located downstream of the first wind wheel 21, the second motor 32 may be located upstream of the second wind wheel 22, and the first motor 31 and the second motor 32 may be formed in a "back-to-back" type of mating structure in the direction of circulation of the air flow. Alternatively, the first motor 31 may be located upstream of the first wind wheel 21, the second motor 32 may be located downstream of the second wind wheel 22, and the first motor 31 and the second motor 32 may be formed as a "face-to-face" type of mating structure in the circulating direction of the air flow. Alternatively, the first electric machine 31 may be located upstream of the first wind rotor 21 and the second electric machine 32 may be located upstream of the second wind rotor 22 in the direction of circulation of the air flow. Alternatively, the first electric machine 31 may be located downstream of the first wind wheel 21 and the second electric machine 32 may be located downstream of the second wind wheel 22 in the direction of circulation of the air flow.
In a specific example shown in fig. 3, the motor support 33 may include a support plate 331 extending vertically, a first mounting groove 331a is provided on a rear side wall of the support plate 331, a second mounting groove 331b is provided on a front side wall of the support plate 331, and the first mounting groove 331a and the second mounting groove 331b are disposed to face each other in the front-rear direction. Wherein the first motor 31 may be provided in the first mounting groove 331a and the second motor 32 may be provided in the second mounting groove 331 b. Therefore, through the arrangement, the structural design form of the motor bracket 33 can be simpler, and the first motor 31 and the second motor 32 can be conveniently fixed.
According to some embodiments of the present invention, the driving assembly 3 may include a dual-shaft motor and a motor bracket 33, the dual-shaft motor may be provided on the motor bracket 33, the dual-shaft motor may have a first motor shaft and a second motor shaft, the first motor shaft may be connected with the first wind wheel 21, and the second motor shaft may be connected with the second wind wheel 22. When the driving assembly 3 is operated, the first motor shaft and the second motor shaft may be simultaneously rotated, and thus the dual-shaft motor may simultaneously drive the first wind wheel 21 and the second wind wheel 22 to rotate. Through the arrangement, the whole structure of the driving assembly 3 is simpler and more compact, the assembly efficiency of the fan assembly 2 can be improved, and the assembly space occupied by the driving assembly 3 can be reduced.
As shown in fig. 4, 6-7, according to some embodiments of the present invention, the fan assembly 2 may further include two wind guiding rings 4, each wind guiding ring 4 may define a wind guiding space therein, and at least a portion of the first wind wheel 21 and the second wind wheel 22 may be disposed in the corresponding wind guiding space. That is, the first wind wheel 21 may be partially disposed in the corresponding wind guiding ring 4, and the first wind wheel 21 may also be entirely disposed in the corresponding wind guiding ring 4. The second wind wheel 22 may be partially disposed in the corresponding wind guiding ring 4, and the second wind wheel 22 may also be entirely disposed in the corresponding wind guiding ring 4. When the fan component 2 works, the air guide ring 4 can play a role in air guide, air flow can be prevented from dispersing around, and can circulate along the air guide space, so that the air supply efficiency of the fan component 2 can be improved. Moreover, the wind guide ring 4 is sleeved on the corresponding first wind wheel 21 and second wind wheel 22, so that blade tip leakage vortex generated when the first wind wheel 21 and the second wind wheel 22 rotate can be reduced, and working noise generated by the fan assembly 2 can be reduced.
In the specific embodiment shown in fig. 9, two fan assemblies 2 of the present invention are selected, wherein one fan assembly 2 has a driving assembly 3, a first wind wheel 21 and a second wind wheel 22, and the other fan assembly 2 includes the driving assembly 3, the first wind wheel 21, the second wind wheel 22 and two wind guiding rings 4, and the two wind guiding rings 4 are sleeved on the first wind wheel 21 and the second wind wheel 22 in a one-to-one correspondence manner. And controlling the two fan assemblies 2 to generate the same air quantity, and respectively detecting the power consumed by the two fan assemblies 2. In the graph shown in fig. 9, a solid line indicates a variation curve of the power of the fan assembly 2 without the air guide ring 4 with the air volume, and a dotted line indicates a variation curve of the power of the fan assembly 2 with the air guide ring 4 with the air volume. As is clear from fig. 9, when the two fan assemblies 2 generate the same amount of air, the power consumed by the fan assembly 2 without the wind guide ring 4 is greater than the power consumed by the fan assembly 2 with the wind guide ring 4. Therefore, the comparative analysis shows that the air guide ring 4 can play a role in improving the air supply efficiency of the fan assembly 2 and reducing the power consumption of the fan assembly 2.
In the specific embodiment shown in fig. 10, two fan assemblies 2 according to the present invention are selected, wherein one fan assembly 2 has a driving assembly 3, a first wind wheel 21 and a second wind wheel 22, and the other fan assembly 2 includes the driving assembly 3, the first wind wheel 21, the second wind wheel 22 and two wind guide rings 4, and the two wind guide rings 4 are respectively sleeved on the first wind wheel 21 and the second wind wheel 22 in a one-to-one correspondence manner. The two fan assemblies 2 are controlled to generate the same air quantity, and the noise generated by the two fan assemblies 2 is respectively detected. In the graph shown in fig. 10, a solid line indicates a change curve of noise generated by the fan assembly 2 without the air guide ring 4 with respect to the air volume, and a dotted line indicates a change curve of noise generated by the fan assembly 2 with the air guide ring 4 with respect to the air volume. As is clear from fig. 10, when the two fan assemblies 2 generate the same air volume, the noise generated by the fan assembly 2 without the wind guide ring 4 is larger than the noise generated by the fan assembly 2 with the wind guide ring 4. Therefore, the comparative analysis shows that the wind guide ring 4 can reduce the noise of the fan assembly 2.
As shown in fig. 6, in some embodiments of the invention, the wind guiding ring 4 may be sleeved outside the first wind wheel 21 and spaced apart from the first wind wheel 21, and the diameter of the first wind wheel 21 may be D1Radial clearance d between the wind guide ring 4 and the first wind wheel 211May be 0.01D1～0.03D1That is, 0.01D1≤d1≤0.03D1. It will be understood that when d1＜0.01D1During the process, the radial gap between the first wind wheel 21 and the wind guide ring 4 is too small, the first wind wheel 21 can generate negative pressure when rotating, only a small part of air flow can enter the wind guide ring 4 through the radial gap between the first wind wheel 21 and the wind guide ring 4 under the action of the negative pressure, and most of the air flow collides with the first wind wheel 21, so that the wind collecting effect of the wind guide ring 4 is influenced, and the air supply efficiency of the fan assembly 2 is reduced. When d is1＞0.03D1At this time, the strength of the tip leakage vortex generated by the first blade 211 is increased, thereby increasing the collision force of the air flow acting on the second blade 221, and further increasing the noise generated by the fan assembly 2And (4) sound. When 0.01D1≤d1≤0.03D1During the time, can reduce the noise that fan subassembly 2 produced under the air supply efficiency prerequisite of guaranteeing fan subassembly 2, can promote fan subassembly 2's practicality greatly.
As shown in fig. 6, in some embodiments of the invention, the wind guiding ring 4 may be sleeved outside the second wind wheel 22 and spaced apart from the second wind wheel 22, and the diameter of the second wind wheel 22 may be D2Radial clearance d between the wind-guiding ring 4 and the second wind wheel 222May be 0.01D2～0.03D2That is, 0.01D2≤d2≤0.03D2. It will be understood that when d2＜0.01D2During the process, the radial gap between the second wind wheel 22 and the wind guide ring 4 is too small, the second wind wheel 22 can generate negative pressure during rotation, under the action of the negative pressure, only a small part of air flow can enter the wind guide ring 4 through the radial gap between the second wind wheel 22 and the wind guide ring 4, and most of the air flow collides with the second wind wheel 22, so that the wind collecting effect of the wind guide ring 4 is influenced, and the air supply efficiency of the fan assembly 2 is reduced. When d is2＞0.03D2In this case, the strength of the tip leakage vortex generated by the second vane 221 is increased, so that the impact of the air flow on the air outlet frame of the outdoor unit 100 is increased, and the noise generated by the fan assembly 2 is increased. When 0.01D2≤d2≤0.03D2During the time, can reduce the noise that fan subassembly 2 produced under the air supply efficiency prerequisite of guaranteeing fan subassembly 2, can promote fan subassembly 2's practicality greatly.
As shown in fig. 4, 6-7, in some embodiments of the present invention, the air inlet end of the air guiding ring 4 may be provided with a first flared portion 41, and the first flared portion 41 may extend toward a direction close to the central axis of the air guiding ring 4 along the flowing direction of the air flow. It can be understood that the first flared portion 41 can increase the air inlet area of the air inlet end of the air guide ring 4, and can reduce the flow resistance of the air flow, so as to reduce the power consumption of the driving assembly 3 and improve the air collecting effect of the air guide ring 4.
Alternatively, the first flared portion 41 may extend from the air inlet end of the air guide ring 4 to the air outlet end of the air guide ring 4. Therefore, in the circulation direction of the air flow, the ventilation area of the air guide ring 4 is gradually reduced, so that the circulation speed of the air flow in the air guide ring 4 can be increased, and the air supply efficiency of the fan assembly 2 can be improved.
As shown in fig. 4, 6-7, in some embodiments of the present invention, the air outlet end of the air guiding ring 4 may be provided with a second flared portion 42, and the second flared portion 42 may extend in a direction away from the central axis of the air guiding ring 4 along the flowing direction of the air flow. It can be understood that the second flared portion 42 can increase the air outlet area of the air outlet end of the air guide ring 4, so as to reduce the flow resistance of the air flow, and thus reduce the power consumption of the driving assembly 3.
Alternatively, the second flared portion 42 may extend from the air outlet end of the air guide ring 4 to the air inlet end of the air guide ring 4. Therefore, in the air flow flowing direction, the ventilation area of the air guide ring 4 is gradually increased, so that the flowing resistance of the air flow in the air guide ring 4 can be reduced, and the effect of reducing the power consumption of the driving assembly 3 can be achieved.
In the specific example shown in fig. 6-7, each of the wind guiding rings 4 externally sleeved on the first wind wheel 21 and the second wind wheel 22 includes a first flared portion 41, a second flared portion 42, and a straight cylindrical section 43, and the first flared portion 41 and the second flared portion 42 are axially connected to the straight cylindrical section 43 and are respectively connected to the straight cylindrical section 43. In the air flow direction, the first flared portion 41 extends toward the central axis of the air guide ring 4, and the second flared portion 42 extends away from the central axis of the air guide ring 4. The diameter of the straight cylindrical section 43 is the same as the minimum diameter of the first flared portion 41 and remains constant in the direction of circulation of the air flow. From this, through the aforesaid setting, can make the structural design of wind-guiding circle 4 more reasonable, can make the collection wind effect and the wind-guiding effect that promote wind-guiding circle 4.
In some embodiments of the present invention, the two wind guide rings 4 may be formed as an integrally formed part, so that the structure of the fan assembly 2 may be simplified, and thus, the assembly efficiency of the fan assembly 2 may be improved. Alternatively, the two air guiding rings 4 can be formed as an integrally injection-molded part.
As shown in fig. 6, in some embodiments of the present invention, two wind guiding rings 4 may be disposed at intervals, and the fan assembly 2 may further include: the air duct mounting plate 5 and the at least one air guide ring 4 can be arranged on the air duct mounting plate 5. Specifically, the two air guide rings 4 may be provided at intervals in the air flow direction. One of the air guide rings 4 can be arranged on the front side of the air duct mounting plate 5, the other air guide ring 4 can be arranged on the rear side of the air duct mounting plate 5, a ventilation hole extending in the circulation direction of air flow can be formed in the air duct mounting plate 5, and the two air guide rings 4 are respectively located on the front side and the rear side of the ventilation hole and are communicated with the ventilation hole. When the fan assembly 2 works, air flow can circulate in the air guide ring 4 positioned at the rear side, the vent hole and the air guide ring 4 positioned at the rear side in sequence. Therefore, through the arrangement, the air duct mounting plate 5 can play the roles of fixing the air guide ring 4 and guiding air flow at the same time, and the structural design of the fan assembly 2 can be more compact.
Optionally, at least one air guiding ring 4 and the air duct mounting plate 5 may be formed as an integrated piece, that is, the air guiding ring 4 and the air duct mounting plate 5 which are sleeved on the first wind wheel 21 may be formed as an integrated piece, the air guiding ring 4 and the air duct mounting plate 5 which are sleeved on the second wind wheel 22 may be formed as an integrated piece, and the two air guiding rings 4 and the air duct mounting plate 5 may be formed as an integrated piece at the same time. From this, through above-mentioned setting, can simplify fan subassembly 2's structure to can promote fan subassembly 2's assembly efficiency. Moreover, the air guide ring 4 and the air duct mounting plate 5 are arranged into an integrally formed part, so that the sealing performance of a matching structure between the air guide ring 4 and the air duct mounting plate 5 is better, and the working noise of the fan assembly 2 can be reduced.
As shown in fig. 5 to 7, an outdoor unit 100 of an air conditioner according to an embodiment of the present invention includes: the air conditioner comprises a machine shell 1, an outdoor heat exchanger 6 and a fan assembly 2 according to the above embodiment of the invention, wherein the machine shell 1 can be provided with an air inlet 1a and an air outlet 1b, and the outdoor heat exchanger 6 and the fan assembly 2 are respectively arranged in the machine shell 1. Specifically, when the air conditioner outdoor unit 100 operates, the fan assembly 2 may rotate by controlling the first wind wheel 21 and the second wind wheel 22 to form a negative pressure in the casing 1, and under the action of the negative pressure, the external air may enter the casing 1 through the air inlet 1a and exchange heat with the outdoor heat exchanger 6, and the fan assembly 2 may further discharge a heat exchange airflow after heat exchange through the air outlet 1 b.
According to the air conditioner outdoor unit 100 of the embodiment of the invention, by arranging the fan assembly 2, the fan assembly 2 has high air supply efficiency and low power consumption, and the working noise generated by the fan assembly 2 is low, so that the energy consumption of the air conditioner outdoor unit 100 can be reduced, the working noise of the air conditioner outdoor unit 100 can be reduced, and the use comfort of a user is greatly improved.
As shown in fig. 6 to 7, according to some embodiments of the present invention, the outdoor heat exchanger 6 may be located upstream of the fan assembly 2 and the outdoor heat exchanger 6 may be disposed opposite to the first wind wheel 21 in a circulating direction of the air flow, thereby improving heat exchange efficiency of the outdoor heat exchanger 6. For example, the first wind wheel 21 and the second wind wheel 22 may both be axial flow wind wheels, and in the air flow direction, the outdoor heat exchanger 6, the first wind wheel 21, and the second wind wheel 22 are sequentially distributed, wherein the front side and the rear side of the outdoor heat exchanger 6 are respectively arranged opposite to the first wind wheel 21 and the air inlet 1a, and the front side of the second wind wheel 22 is arranged opposite to the air outlet 1 b. Therefore, when the outdoor unit 100 of the air conditioner operates, the fan assembly 2 rotates to form a negative pressure, and the air flow circulates from back to front under the action of the negative pressure, and the air flow entering the casing 1 from the air inlet 1a directly flows to the outdoor heat exchanger 6 and exchanges heat with the outdoor heat exchanger 6. From this, through above-mentioned setting, outdoor heat exchanger 6's heat exchange efficiency has been promoted greatly.
The outdoor unit 100 of the air conditioner according to the present invention will be described in detail as an exemplary embodiment with reference to the accompanying drawings. It is to be understood that the following description is only exemplary, and not restrictive of the invention.
As shown in fig. 5, the outdoor unit 100 of the air conditioner according to the embodiment of the present invention includes: a cabinet 1, an outdoor heat exchanger 6, and a fan assembly 2 according to the above-described embodiment of the present invention.
Wherein, the casing 1 is provided with an air inlet 1a and an air outlet 1b, and the outdoor heat exchanger 6 and the fan assembly 2 are respectively arranged in the casing 1. In the circulating direction of the air flow, the outdoor heat exchanger 6 may be located upstream of the fan assembly 2 and the outdoor heat exchanger 6 is disposed opposite to the first wind wheel 21.
As shown in fig. 6 to 7, the fan assembly 2 includes: first wind wheel 21, second wind wheel 22, drive assembly 3, two wind-guiding circles 4 and wind tunnel mounting panel 5, first wind wheel 21 and second wind wheel 22 are the axial compressor wind wheel, and first wind wheel 21 includes a plurality of first blades 211 at interval distribution in its circumferential direction, and second wind wheel 22 includes a plurality of second blades 221 at interval distribution in its circumferential direction. In the direction of circulation of the air flow, the second wind wheel 22 may be located downstream of the first wind wheel 21 and the second wind wheel 22 may be spaced apart from the first wind wheel 21. Wherein, as shown in fig. 2, the extension length of the first wind wheel 21 along the axial direction thereof may be L1The second wind wheel 22 may have an extension length L in its axial direction2Distance L between first rotor 21 and second rotor 220Satisfy the relation: l is0＝0.5(L1+L2)。
The top and the bottom of the air duct mounting plate 5 are respectively connected with the inner wall of the casing 1, the driving assembly 3 comprises a first motor 31 and a second motor 32, and the first motor 31 and the second motor 32 can be respectively arranged on the air duct mounting plate 5. A first motor 31 may be coupled to the first rotor 21 to drive the first rotor 21 in rotation and a second motor 32 may be coupled to the second rotor 22 to drive the second rotor 22 in rotation. In the circulating direction of the air flow, the first electric machine 31 may be located downstream of the first wind wheel 21, the second electric machine 32 may be located upstream of the second wind wheel 22, and the first electric machine 31 and the second electric machine 32 may be formed in a "back-to-back" type fitting structure. The rotation speeds of the first motor 31 and the second motor 32 are respectively controlled so that the rotation speed ratio between the first wind rotor 21 and the second wind rotor 22 is 0.95.
Two wind-guiding circles 4 are all established on wind channel mounting panel 5, all can inject wind-guiding space in every wind-guiding circle 4, and first wind wheel 21 and second wind wheel 22 can be established in the wind-guiding space that corresponds. The wind guide rings 4 sleeved on the first wind wheel 21 and the second wind wheel 22 respectively comprise a first flared part 41, a second flared part 42 and a straight cylinder section 43, and the first flared part 41 and the second flared part 42 are arranged on the straight cylinder section 43 and are axially connected with the straight cylinder section 43 respectively. In the air flow direction, the first flared portion 41 extends toward the central axis of the air guide ring 4, and the second flared portion 42 extends away from the central axis of the air guide ring 4. The diameter of the straight cylindrical section 43 is the same as the minimum diameter of the first flared portion 41 and remains constant in the direction of circulation of the air flow. One of the two air guide rings 4 and the air duct mounting plate 5 form an integrated piece, and the other air guide ring 4 is in screw connection with the air duct mounting plate 5.
The wind guide ring 4 sleeved on the first wind wheel 21 is arranged at an interval with the first wind wheel 21, and the diameter of the first wind wheel 21 can be D1Radial clearance d between the wind guide ring 4 and the first wind wheel 211＝0.03D1The wind guiding ring 4 externally sleeved on the second wind wheel 22 is arranged at an interval with the second wind wheel 22, and the diameter of the second wind wheel 22 can be D2Radial clearance d between the wind-guiding ring 4 and the second wind wheel 222＝0.03D2. From this, through the aforesaid setting, can reduce the noise that fan subassembly 2 produced under the air supply efficiency prerequisite of guaranteeing fan subassembly 2, can promote fan subassembly 2's practicality greatly.
Specifically, when the air conditioner outdoor unit 100 operates, the driving assembly 3 may drive the first wind wheel 21 and the second wind wheel 22 to rotate so as to form negative pressure in the casing 1, external air may enter the casing 1 through the air inlet 1a and exchange heat with the outdoor heat exchanger 6 under the action of the negative pressure, and the fan assembly 2 may further discharge heat exchange air flow after heat exchange through the air outlet 1 b.
It is understood that the difference in the rotational speed between the first wind rotor 21 and the second wind rotor 22 can be reduced by controlling the rotational speed ratio between the first wind rotor 21 and the second wind rotor 22 to 0.95. When the fan assembly 2 works, the noises generated by the first wind wheel 21 and the second wind wheel 22 are very small, and the working noise of the fan assembly 2 is the sum of the noises generated by the first wind wheel 21 and the second wind wheel 22, so that the working noise of the fan assembly 2 can be reduced.
Since the fan assembly 2 is formed as a counter-rotating rotor, the first rotor 21 and the second rotor 22 can be rotated simultaneously when the fan assembly 2 is operated, thereby rotating the first rotor 21 and the second rotor 22 simultaneouslyThe amount of air supplied by the fan assembly 2 can be increased. Therefore, on the premise of the same air output requirement, the power consumption of the cyclone wheel is also the lowest, so that the energy consumption of the outdoor unit 100 of the air conditioner can be reduced. Due to L0＝0.5(L1+L2) The distance between the first wind wheel 21 and the second wind wheel 22 is set reasonably, and the strength of the tip leakage vortex generated by the first blade 211 is reduced in the process of flowing from the first wind wheel 21 to the second wind wheel 22, so that the impact force acting on the second blade 221 can be reduced, and the noise generated by the fan assembly 2 can be reduced. Moreover, the distance between the first wind wheel 21 and the second wind wheel 22 has a small influence on the air supply speed of the fan assembly 2, so that the air supply efficiency of the fan assembly 2 can be ensured.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "back", "top", "bottom", "inner", "outer", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, are used for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (14)
1. A fan assembly of an outdoor unit of an air conditioner, comprising:
a first wind wheel;
a second wind wheel located downstream of the first wind wheel in a direction of circulation of the air flow;
the driving assembly is matched with the first wind wheel and the second wind wheel respectively so as to drive the first wind wheel and the second wind wheel to rotate;
the rotating speed ratio between the first wind wheel and the second wind wheel is 0.8-1.25, and the extension length of the first wind wheel along the axial direction is L1The extension length of the second wind wheel along the axial direction is L2A distance L between the first wind wheel and the second wind wheel0Satisfy the relation: 0.2 (L)1+L2)≤L0≤1.5(L1+L2)。
2. The outdoor unit of an air conditioner of claim 1, wherein a rotation speed ratio between the first wind wheel and the second wind wheel is 0.9 to 1.1.
3. The fan assembly of an outdoor unit of an air conditioner of claim 1, wherein the driving assembly comprises:
the first motor is connected with the first wind wheel so as to drive the first wind wheel to rotate;
the second motor is connected with the second wind wheel to drive the second wind wheel to rotate;
and the first motor and the second motor are respectively arranged on the motor support.
4. The fan assembly of an outdoor unit of an air conditioner of claim 1, wherein the driving assembly comprises:
the double-shaft motor is provided with a first motor shaft and a second motor shaft, the first motor shaft is connected with the first wind wheel, and the second motor shaft is connected with the second wind wheel;
the motor support, the biax motor is established on the motor support.
5. The outdoor unit of an air conditioner according to any one of claims 1 to 4, further comprising: the wind guide device comprises two wind guide rings, wherein a wind guide space is defined in each wind guide ring, and at least one part of the first wind wheel and at least one part of the second wind wheel are arranged in the corresponding wind guide space.
6. The outdoor unit of claim 5, wherein the air guide ring is sleeved on the first wind wheel and spaced from the first wind wheel, and the diameter of the first wind wheel is D1The radial clearance between the wind guide ring and the first wind wheel is 0.01D1～0.03D1。
7. The outdoor unit of claim 5, wherein the air guide ring is sleeved on the second wind wheel and spaced from the second wind wheel, and the diameter of the second wind wheel is D2The radial clearance between the wind guide ring and the second wind wheel is 0.01D2～0.03D2。
8. The outdoor unit of an air conditioner as claimed in claim 5, wherein the air inlet end of the air guide ring has a first flared portion, and the first flared portion extends toward a direction close to the central axis of the air guide ring along the air flow direction.
9. The outdoor unit of claim 5, wherein the air outlet end of the air guide ring has a second flared portion, and the second flared portion extends in a direction away from the central axis of the air guide ring along the air flow direction.
10. The outdoor unit fan assembly of claim 5, wherein the two air guide rings are formed as an integrally formed member.
11. The outdoor unit of claim 5, wherein the two air guide rings are spaced apart from each other, and the fan assembly further comprises: and at least one air guide ring is arranged on the air duct mounting plate.
12. The outdoor unit of claim 11, wherein at least one of the air guide rings is formed as an integral member with the duct mounting plate.
13. An outdoor unit of an air conditioner, comprising:
the air conditioner comprises a shell, wherein an air inlet and an air outlet are formed in the shell;
the outdoor heat exchanger is arranged in the shell;
a fan assembly outside the air conditioner compartment according to any one of claims 1 to 12, the fan assembly being provided within the cabinet.
14. The outdoor unit of claim 13, wherein the outdoor heat exchanger is located upstream of the fan assembly in a circulating direction of the air current and is disposed opposite to the first wind wheel.
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| CN201910325372.4A CN109958639B (en) | 2019-04-22 | 2019-04-22 | Fan assembly of air conditioner outdoor unit and air conditioner outdoor unit with same |
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| CN201910325372.4A CN109958639B (en) | 2019-04-22 | 2019-04-22 | Fan assembly of air conditioner outdoor unit and air conditioner outdoor unit with same |
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| CN113048579A (en) * | 2019-12-26 | 2021-06-29 | 广东美的白色家电技术创新中心有限公司 | Outdoor machine of air conditioner |
| EP4023948A4 (en) * | 2019-12-26 | 2023-03-08 | Guangdong Midea White Home Appliance Technology Innovation Center Co., Ltd. | Outdoor unit of air conditioner |
| CN113048580A (en) * | 2019-12-26 | 2021-06-29 | 广东美的白色家电技术创新中心有限公司 | Outdoor machine of air conditioner |
| CN113123979B (en) * | 2019-12-31 | 2022-12-09 | 广东美的白色家电技术创新中心有限公司 | Outdoor machine of air conditioner |
| CN111174338A (en) * | 2020-02-19 | 2020-05-19 | 广东美的制冷设备有限公司 | Air conditioner outdoor unit and air conditioner |
| CN113404712B (en) * | 2020-03-16 | 2024-07-16 | 广东美的白色家电技术创新中心有限公司 | Fan, air conditioner outdoor unit and air conditioner |
| CN111255749A (en) * | 2020-03-17 | 2020-06-09 | 特灵空调系统(中国)有限公司 | Wind-guiding circle and fan subassembly |
| CN114688049B (en) * | 2020-12-25 | 2024-02-20 | 广东美的白色家电技术创新中心有限公司 | Fan assembly and air conditioner |
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