CN113431807A - Fan blade vibration reduction assembly, fan assembly, upper air outlet outer unit and air conditioner - Google Patents
Fan blade vibration reduction assembly, fan assembly, upper air outlet outer unit and air conditioner Download PDFInfo
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- CN113431807A CN113431807A CN202110760207.9A CN202110760207A CN113431807A CN 113431807 A CN113431807 A CN 113431807A CN 202110760207 A CN202110760207 A CN 202110760207A CN 113431807 A CN113431807 A CN 113431807A
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- shaft sleeve
- sleeve
- fan blade
- air outlet
- damping
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- 238000013016 damping Methods 0.000 claims abstract description 70
- 239000000463 material Substances 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 8
- 239000004033 plastic Substances 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 6
- 238000004378 air conditioning Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920002943 EPDM rubber Polymers 0.000 description 1
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 210000003108 foot joint Anatomy 0.000 description 1
- -1 for example Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—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
- F04D29/668—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps damping or preventing mechanical vibrations
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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
-
- 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
- F04D29/263—Rotors specially for elastic fluids mounting fan or blower rotors on shafts
-
- 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
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/64—Mounting; Assembling; Disassembling of axial pumps
- F04D29/644—Mounting; Assembling; Disassembling of axial pumps especially adapted for elastic fluid pumps
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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
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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
- F24F1/40—Vibration or noise prevention at outdoor units
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/24—Casings; Enclosures; Supports specially adapted for suppression or reduction of noise or vibrations
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Power Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides a fan blade vibration reduction assembly, a fan assembly, an upper air outlet outer machine and an air conditioner, and belongs to the technical field of fans. Fan blade damping subassembly for connect fan blade and drive shaft, include: the fan blade connecting piece comprises a first shaft sleeve, a damping sleeve and a second shaft sleeve, wherein the first shaft sleeve and the damping sleeve are embedded in the second shaft sleeve, the damping sleeve is located between the first shaft sleeve and the second shaft sleeve, the first shaft sleeve is used for being connected with a driving shaft, the second shaft sleeve is used for being connected with the fan blade connecting piece, and the driving shaft transmits torque to the fan blade through the first shaft sleeve, the damping sleeve and the second shaft sleeve. The invention can reduce the vibration transmission between the fan blade and the driving shaft of the electric appliance, thereby reducing the vibration and the noise of the fan and improving the operation stability of the fan.
Description
Technical Field
The invention relates to the technical field of fans, in particular to a fan blade vibration reduction assembly, a fan assembly, an upper air outlet outer machine and an air conditioner.
Background
Along with the fierce product competition, the cost reduction requirement is higher and higher, the problems of the air conditioning system are more and more, the noise problem is more frequent, and the noise requirement of quality control is severer than before because the air conditioning noise problem is complained for many times. Most outdoor units of the variable frequency air conditioners are axial flow fan systems, axial flow fan blades are fan blades capable of generating airflow in the same direction as the fan blade shafts, the axial flow fan blades are called axial flow type, the airflow flows parallel to the fan shafts, and existing products such as electric fans and air conditioner outdoor unit fans operate in the axial flow mode.
The existing axial flow fan blade component comprises a fan blade, a driving motor, a flow guide cover and an air outlet outer cover, wherein the fan blade also comprises a fan blade and a fan blade shaft, the flow guide cover comprises a cylindrical flow guide ring, the flow guide cover is fixedly connected with the air outlet outer cover, an annular support frame is arranged in the flow guide ring, the annular support frame comprises a central component and an outer side spoke, one end of the spoke is fixedly connected with the inner side of the flow guide ring, the fan blade shaft is connected with the driving motor, and the driving motor is arranged on the central component of the annular support frame.
For the upper air outlet outdoor unit, the fan blades are made of plastic materials, the fan blades and the motor shaft are assembled into a whole through bolts, the motor and the grille are assembled together through 4 screws, and the whole fan system is fixed on the condenser through the screws.
The upper air outlet structure is special in structure, the grating is made of plastic materials, the rigidity of the grating is small, resonance is easy to cause, the grating serves as the only supporting structure of the fan system, vibration energy generated by the whole fan system is transmitted to the grating, and the vibration energy of the grating is transmitted to the whole machine body through the condenser. Therefore, the generated structure low-frequency radiation noise is very large, the noise value is higher, and the noise value exceeds the existing enterprise standards, and the method is a difficulty in the current industry. Long-term research and test are carried out aiming at the problem, at present, the vibration noise of the fan blade and the motor is the optimal level, and the vibration and noise reduction effect is difficult to be greatly improved by optimizing from the angle of the fan blade and the motor.
Disclosure of Invention
In view of this, the present invention provides a fan blade vibration reduction assembly, a fan assembly, an upper air outlet outer unit and an air conditioner, which are at least used for solving the technical problem of large fan vibration in the prior art, and specifically:
in a first aspect, the present invention provides a fan blade vibration damping assembly for connecting a fan blade and a driving shaft, comprising: a first shaft sleeve, a damping sleeve and a second shaft sleeve,
the first shaft sleeve and the damping sleeve are embedded in the second shaft sleeve, the damping sleeve is positioned between the first shaft sleeve and the second shaft sleeve,
the first shaft sleeve is used for being connected with the driving shaft, the second shaft sleeve is used for being connected with the fan blade connecting piece, and the driving shaft transmits torque to the fan blade through the first shaft sleeve, the vibration reduction sleeve and the second shaft sleeve.
Further optionally, the outer wall surface of the first sleeve is a conical surface,
the vibration damping sleeve and the second shaft sleeve are both in a conical cylinder structure,
the mounting hole of the fan blade is a conical hole,
and the first shaft sleeve, the damping sleeve, the second shaft sleeve and the mounting holes of the fan blades form a taper self-locking structure in the axial direction.
Further optionally, a key and a groove matching structure are formed between the first shaft sleeve and the damping sleeve, between the damping sleeve and the second shaft sleeve, and between the second shaft sleeve and the mounting hole, and torque is transmitted through the key and groove matching structure.
Further optionally, the first bushing and the second bushing are constructed of a rigid material,
the damping sleeve is made of a plastic material.
Further optionally, the fan blade vibration reduction assembly is used for an upper air outlet fan system.
In a second aspect, the invention provides a fan assembly, which comprises a fan blade and a motor, wherein the fan blade is connected with a driving shaft of the motor through the fan blade vibration reduction assembly.
In a third aspect, the present invention provides an upper air outlet outdoor unit, including:
the upper air outlet grille is provided with a motor supporting leg;
the motor is arranged on the motor supporting leg;
and the fan blade is connected with the driving shaft of the motor through the fan blade vibration reduction assembly.
In a further alternative,
the motor support legs comprise vibration reduction mounting support legs which comprise connecting plates and supporting plates, the first ends of the connecting plates are connected with the upper air outlet grids, the second ends of the connecting plates are connected with the supporting plates, the supporting plates are used for supporting the mounting legs of the motor,
be provided with spacing post in the backup pad, it is right the installation foot carries on spacingly.
Further optionally, a vibration damping pad is arranged on the limiting column and used for supporting the mounting foot,
the damping pad is a cylindrical structure with a corrugated peripheral wall.
Further optionally, the first end of damping pad is contradicted in the backup pad, the second end of damping pad is formed with the draw-in groove, the draw-in groove with the installation foot joint.
Further optionally, the vibration reduction mounting support leg further comprises two side plates, the two side plates are respectively arranged on two sides of the connecting plate, the side plates are simultaneously connected with the upper air outlet grille, the connecting plate and the supporting plate,
and one side plate is provided with a notch, and the notch is used for the installation foot to pass through.
Further optionally, the vibration damping mounting support legs are provided in plurality, and the plurality of vibration damping mounting support legs are distributed on the same circumference.
Further optionally, the motor support leg further comprises a fixed mounting support leg, and the fixed mounting support leg is used for being connected with the mounting support leg of the motor through a connecting piece.
In a fourth aspect, the present invention provides an air conditioner, including the above upper air outlet outdoor unit.
According to the invention, the fan blade vibration reduction assembly is arranged between the fan blade and the driving shaft, so that the vibration transmission between the fan blade and the driving shaft of the electric appliance can be reduced, the vibration and the noise of the fan are reduced, and the running stability of the fan can be improved.
Drawings
The above and other objects, features and advantages of the present disclosure will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings. The drawings described below are merely some embodiments of the present disclosure, and other drawings may be derived from those drawings by those of ordinary skill in the art without inventive effort.
Fig. 1 is a schematic diagram illustrating a fan blade vibration reduction assembly in a disassembled state according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of a fan blade damping assembly assembled to a fan according to an embodiment of the invention;
FIG. 3 is a schematic diagram illustrating a state where a fan and an upper air outlet grille are disassembled according to an embodiment of the present invention;
FIG. 4 is a schematic view of an upper air outlet grille structure according to an embodiment of the present invention;
FIG. 5 shows an enlarged view at A in FIG. 4;
FIG. 6 is a schematic sectional view illustrating an assembled state of an upper air outlet grille and a fan according to an embodiment of the present invention;
fig. 7 shows a schematic structural view of a vibration damping pad according to an embodiment of the present invention.
In the figure:
10. a first bushing; 11. a first key; 20. a second shaft sleeve; 21. a second key; 22. a third keyway; 30. a damping sleeve; 31. a third bond; 32. a first keyway; 40. a fan blade; 50. a motor; 51. locking the nut; 52. mounting a foot; 60. an upper air outlet grid; 61. vibration damping mounting support legs; 611. a connecting plate; 612. a support plate; 613. a limiting column; 614. a side plate; 615. opening the gap; 62. fixedly mounting support legs; 70. a vibration damping pad.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and "a" and "an" generally include at least two, but do not exclude at least one, unless the context clearly dictates otherwise.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a commodity or system that includes the element.
According to the invention, the fan blade vibration reduction assembly is arranged between the fan blade and the driving shaft, so that the vibration transmission between the fan blade and the driving shaft of the electric appliance can be reduced, and further, the vibration of the fan is reduced and the noise is reduced. Meanwhile, the vibration of the fan transmitted to the upper air outlet grid is reduced by arranging the mounting feet of the vibration damping pad supporting motor, so that the vibration of the outdoor unit is controlled, the noise of the outdoor unit is reduced, and the assembly efficiency is improved through the structure arrangement. The invention is described in detail below with reference to specific examples:
as shown in fig. 1 and 2, the present invention provides a blade vibration damping assembly for connecting a blade 40 and a driving shaft, including: the wind turbine generator comprises a first shaft sleeve 10, a damping sleeve 30 and a second shaft sleeve 20, wherein the first shaft sleeve 10 and the damping sleeve 30 are embedded in the second shaft sleeve 20, the damping sleeve 30 is located between the first shaft sleeve 10 and the second shaft sleeve 20, the first shaft sleeve 10 is used for being connected with a driving shaft, the second shaft sleeve 20 is used for being connected with a fan blade 40, and the driving shaft transmits torque to the fan blade 40 through the first shaft sleeve 10, the damping sleeve 30 and the second shaft sleeve 20.
Preferably, the outer wall surface of the first shaft sleeve 10 is a conical surface, the damping sleeve 30 and the second shaft sleeve 20 are both conical cylinder structures, the mounting hole of the fan blade 40 is a conical hole, the mounting holes of the first shaft sleeve 10, the damping sleeve 30, the second shaft sleeve 20 and the fan blade 40 form a taper self-locking structure in the axial direction, the first shaft sleeve 10, the damping sleeve 30 and the second shaft sleeve 20 can be assembled together firstly during assembly, and then the first shaft sleeve, the damping sleeve 30 and the second shaft sleeve 20 are integrally assembled on the fan blade 40, so that the structure of the fan blade damping assembly is simplified, and the assembly efficiency is improved. Further preferably, the first shaft sleeve 10, the damping sleeve 30 and the second shaft sleeve 20 are the same in length, and after the assembly, two ends of the first shaft sleeve 10, the damping sleeve 30 and the second shaft sleeve 20 are flush with each other, and after the assembly, the first shaft sleeve, the damping sleeve 30 and the second shaft sleeve are installed in the installation hole of the fan blade 40 and flush with the end of the installation hole of the fan blade 40.
And key and groove matching structures are formed between the first shaft sleeve 10 and the damping sleeve 30, between the damping sleeve 30 and the second shaft sleeve 20 and between the second shaft sleeve 20 and the mounting hole, and the key and groove matching structures are communicated to transmit torque.
Further, the inner wall surface of the first shaft sleeve 10 is a D-shaped cylindrical surface to be adapted to the shape of the driving shaft of the motor 50 and to be capable of transmitting torque, the outer wall surface thereof is a conical surface, and a plurality of first keys 11 are provided on the outer wall surface thereof, preferably, the plurality of first keys 11 extend along the length direction of the outer wall surface of the first shaft sleeve 10 and are distributed along the circumferential direction of the outer wall surface of the first shaft sleeve 10, and preferably, four keys are uniformly distributed. Further preferably, the plurality of first keys 11 may be arranged in a staggered manner in the axial direction of the first sleeve 10, and may also be located on the same circumference.
The inner wall surface of the damping sleeve 30 is provided with first key grooves 32 corresponding to the positions and the number of the first keys 11, after the damping sleeve 30 is assembled with the first shaft sleeve 10, each first key 11 is embedded into one first key groove 32 to form key and groove matching, and torque is transmitted through the key and groove matching.
The outer wall surface of the second sleeve 20 is provided with a plurality of second keys 21, preferably, the plurality of second keys 21 extend along the length direction of the outer wall surface of the second sleeve 20, and are distributed along the circumferential direction of the outer wall surface of the second sleeve 20, and preferably, four keys are uniformly distributed. Further preferably, the plurality of second keys 21 may be arranged offset in the axial direction of the second sleeve 20, and may also be located on the same circumference. Correspondingly, second key grooves are formed in the mounting holes of the fan blades 40, after the second shaft sleeve 20 is assembled with the mounting holes, each second key 21 is embedded into one second key groove to form key-groove matching, and torque is transmitted through the key-groove matching.
The outer wall surface of the damping sleeve 30 is provided with a plurality of third keys 31, and preferably, the plurality of third keys 31 extend along the length direction of the outer wall surface of the damping sleeve 30, and are distributed along the circumferential direction of the outer wall surface of the damping sleeve 30, and four of the third keys 31 are preferably uniformly distributed. Further preferably, the third keys 31 may be arranged offset in the axial direction of the damping sleeve 30, and may also be located on the same circumference. Correspondingly, third key grooves 22 are formed in the inner wall surface of the second shaft sleeve 20, and after the second shaft sleeve 20 is assembled with the damping sleeve 30, each third key 31 is embedded into one third key groove 22 to form a key-groove fit, so that torque is transmitted through the key-groove fit.
Preferably, the first and second bushings 10, 20 are constructed of a rigid material, for example, steel, to ensure efficient torque transmission; the damping sleeve 30 is made of a plastic material, such as a rubber material, preferably ethylene propylene diene monomer or nitrile rubber, and can reduce or eliminate the transmission of vibration between the fan blade 40 and the output shaft of the motor 50 through its own deformation while ensuring the transmission of torque.
When the fan blade vibration reduction assembly provided by the invention is installed, the first shaft sleeve 10, the vibration reduction sleeve 30 and the second shaft sleeve 20 are assembled firstly, then the first shaft sleeve, the vibration reduction sleeve and the second shaft sleeve are integrally installed in the installation hole of the fan blade 40, and then the driving shaft of an electric appliance penetrates through the first shaft sleeve 10 and is connected with the locking nut 51 to complete the assembly of the fan blade 40.
The invention also provides a fan assembly which comprises a fan blade and a motor, wherein the fan blade is connected with a driving shaft of the motor through the fan blade vibration reduction assembly.
As shown in fig. 3 and 4, the present invention further provides an upper air outlet outdoor unit, including: the upper air outlet grille 60 is arranged at the top air outlet of the machine body, a motor supporting leg is arranged on the upper air outlet grille 60, and the fan is arranged on the upper air outlet grille 60; a motor 50 mounted on the motor support leg; the fan blades 40 are connected with a driving shaft of the motor 50 through the fan blade vibration reduction assembly, preferably, the motor supporting legs are provided with vibration reduction pads 70, and the vibration reduction pads 70 and the fan blade vibration reduction assembly form a secondary vibration reduction mechanism, so that the vibration transmitted to the upper air outlet grille 60 when the fan runs can be reduced to a great extent, and meanwhile, the noise generated by the vibration is reduced.
As shown in fig. 4, 5, and 6, the motor support leg includes a vibration damping mounting support leg 61, the vibration damping mounting support leg 61 includes a connecting plate 611 and a supporting plate 612, a first end of the connecting plate 611 is connected to the upper air outlet grille 60, a second end of the connecting plate 611 is connected to the supporting plate 612, the supporting plate 612 is used for supporting the mounting leg 52 of the motor 50, and the supporting plate 612 is provided with a limiting column 613 for limiting the mounting leg 52. Preferably, the supporting plate 612 is vertically arranged with the connecting plate 611 to form an L-shaped structure, the limiting post 613 is arranged on the upper side of the supporting plate 612 and is vertically arranged with the supporting plate 612, a through hole is arranged on the mounting leg 52 of the motor 50, the mounting leg 52 of the motor 50 is hung on the supporting plate 612, and the through hole is sleeved on the limiting post 613.
Preferably, the vibration damping mounting leg 61 further includes two side plates 614, the two side plates 614 are respectively disposed on two sides of the connecting plate 611, and the side plates 614 are simultaneously connected to the upper air outlet grille 60, the connecting plate 611 and the supporting plate 612, wherein one side plate 614 is provided with a notch 615, the notch 615 is used for the mounting leg 52 to pass through, when the motor 50 is mounted, the mounting leg 52 aligns with the notch 615 and rotates the motor 50 to enable the mounting leg 52 to rotate between the two side plates 614, and then the motor 50 is downwardly hung onto the limiting post 613. Further, the vibration damping mounting support leg 61 is constructed as an integral structure and is integrally formed with the upper air outlet grille 60 to improve the structural strength thereof, and in addition, the arrangement of the two side plates 614 plays a role of protection, so that the risk that the mounting leg 52 falls off from the vibration damping mounting support leg 61 can be reduced. The mounting legs are provided in plural numbers, and the plural vibration damping mounting legs 61 are distributed on the same circumference, and the specific number is matched with the number of the mounting legs 52 of the motor 50. Preferably, the motor support leg further comprises a fixed mounting support leg 62 for connecting with the mounting leg 52 of the motor 50 through a connector, in this embodiment, the fixed mounting support leg 62 comprises a threaded hole disposed on the upper air outlet grille 60 for mounting a screw, specifically, the motor support leg comprises three vibration reduction mounting support legs 61 and one fixed mounting support leg 62 disposed at four corners of a square respectively. Four mounting feet 52 are uniformly distributed on the motor 50, three mounting feet 52 are hung on the vibration reduction mounting support feet 61 when the motor 50 is mounted, and one mounting foot 52 is connected with the fixed mounting support foot 62 through a screw, so that the motor 50 is prevented from falling off from the motor support foot.
The restraint posts 613 are provided with vibration absorbing pads 70, as shown in fig. 6 and 7, the vibration absorbing pads 70 are used for supporting the mounting feet 52, so that vibration generated when the motor 50 operates can be absorbed. Preferably, the damping pad 70 has a cylindrical structure with a corrugated peripheral wall, a first end of the damping pad 70 abuts against the support plate 612, and a second end of the damping pad 70 is formed with a locking groove, which is locked with the mounting leg 52.
Preferably, the upper outlet grille 60 is further provided with a wiring slot, and the wiring slot is communicated with the region where the motor support leg is located, and is used for installing a power supply and control circuit of the motor 50.
Compared with the noise test through the original structure and the invention, the data shows that the total noise value of the invention is reduced by 2.1db, the noise peak value is reduced by 2.3db, the noise peak value is reduced, the low-frequency hum is improved, and the sound quality effect is obviously improved.
The invention also provides an air conditioner which comprises the upper air outlet outdoor unit and the indoor unit.
According to the invention, the fan blade vibration reduction assembly is arranged between the fan blade and the driving shaft, and the vibration reduction pad 70 is arranged on the motor support leg to form secondary vibration reduction, so that the vibration of the outdoor unit is effectively reduced, the noise is reduced, and meanwhile, the assembly efficiency of the whole machine can be improved.
Exemplary embodiments of the present disclosure are specifically illustrated and described above. It is to be understood that the present disclosure is not limited to the precise arrangements, instrumentalities, or instrumentalities described herein; on the contrary, the disclosure is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims (14)
1. The utility model provides a fan blade damping subassembly for connect fan blade and drive shaft, its characterized in that includes: a first shaft sleeve, a damping sleeve and a second shaft sleeve,
the first shaft sleeve and the damping sleeve are embedded in the second shaft sleeve, the damping sleeve is positioned between the first shaft sleeve and the second shaft sleeve,
the first shaft sleeve is used for being connected with the driving shaft, the second shaft sleeve is used for being connected with the fan blade connecting piece, and the driving shaft transmits torque to the fan blade through the first shaft sleeve, the vibration reduction sleeve and the second shaft sleeve.
2. The fan blade vibration reduction assembly according to claim 1, wherein the outer wall surface of the first shaft sleeve is a conical surface,
the vibration damping sleeve and the second shaft sleeve are both in a conical cylinder structure,
the mounting hole of the fan blade is a conical hole,
and the first shaft sleeve, the damping sleeve, the second shaft sleeve and the mounting holes of the fan blades form a taper self-locking structure in the axial direction.
3. The fan blade vibration reduction assembly according to claim 2, wherein a key and groove fit structure is formed between the first shaft sleeve and the vibration reduction sleeve, between the vibration reduction sleeve and the second shaft sleeve, and between the second shaft sleeve and the mounting hole, and torque is transmitted through the key and groove fit structure.
4. The blade damper assembly according to any one of claims 1 to 3, wherein the first bushing and the second bushing are made of a rigid material,
the damping sleeve is made of a plastic material.
5. The fan blade vibration reduction assembly according to any one of claims 1 to 3, wherein the fan blade vibration reduction assembly is used for an upper air outlet fan system.
6. A fan assembly comprises fan blades and a motor, and is characterized in that the fan blades are connected with a driving shaft of the motor through a fan blade vibration reduction assembly according to any one of claims 1 to 5.
7. The utility model provides an go up outer machine of air-out which characterized in that includes:
the upper air outlet grille is provided with a motor supporting leg;
the motor is arranged on the motor supporting leg;
the fan blade is connected with a driving shaft of the motor through the fan blade vibration reduction assembly according to any one of claims 1 to 4.
8. The upper air outlet outdoor unit of claim 7,
the motor support legs comprise vibration reduction mounting support legs which comprise connecting plates and supporting plates, the first ends of the connecting plates are connected with the upper air outlet grids, the second ends of the connecting plates are connected with the supporting plates, the supporting plates are used for supporting the mounting legs of the motor,
be provided with spacing post in the backup pad, it is right the installation foot carries on spacingly.
9. The upper air outlet outdoor unit of claim 8, wherein the limiting posts are provided with vibration absorbing pads for supporting the mounting feet,
the damping pad is a cylindrical structure with a corrugated peripheral wall.
10. The upper air outlet outdoor unit of claim 9, wherein a first end of the vibration damping pad abuts against the support plate, and a second end of the vibration damping pad is formed with a clamping groove, and the clamping groove is clamped with the mounting pin.
11. The upper air outlet outdoor unit of claim 8, wherein the vibration reduction mounting legs further comprise two side plates respectively disposed at two sides of the connecting plate, the side plates are simultaneously connected to the upper air outlet grille, the connecting plate and the supporting plate,
and one side plate is provided with a notch, and the notch is used for the installation foot to pass through.
12. The upper air outlet outdoor unit of any one of claims 8 to 11, wherein a plurality of vibration damping mounting feet are provided, and the plurality of vibration damping mounting feet are distributed on the same circumference.
13. The upper air outlet outdoor unit of claim 12, wherein the motor support leg further comprises a fixed mounting support leg, and the fixed mounting support leg is connected with the mounting support leg of the motor through a connecting member.
14. An air conditioner, characterized by comprising the upper air outlet outdoor unit of any one of claims 7 to 13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110760207.9A CN113431807A (en) | 2021-07-05 | 2021-07-05 | Fan blade vibration reduction assembly, fan assembly, upper air outlet outer unit and air conditioner |
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| CN202110760207.9A CN113431807A (en) | 2021-07-05 | 2021-07-05 | Fan blade vibration reduction assembly, fan assembly, upper air outlet outer unit and air conditioner |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115788944A (en) * | 2023-01-16 | 2023-03-14 | 中国电建集团透平科技有限公司 | Large-scale wind-tunnel fan drive shafting structure |
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2021
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115788944A (en) * | 2023-01-16 | 2023-03-14 | 中国电建集团透平科技有限公司 | Large-scale wind-tunnel fan drive shafting structure |
| CN115788944B (en) * | 2023-01-16 | 2023-04-18 | 中国电建集团透平科技有限公司 | Large-scale wind-tunnel fan drive shafting structure |
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