CN114320958B - Fan device and air condensing units - Google Patents
Fan device and air condensing units Download PDFInfo
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- CN114320958B CN114320958B CN202011080566.1A CN202011080566A CN114320958B CN 114320958 B CN114320958 B CN 114320958B CN 202011080566 A CN202011080566 A CN 202011080566A CN 114320958 B CN114320958 B CN 114320958B
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Abstract
The invention discloses a fan device and an air conditioner outdoor unit, wherein the fan device comprises a first wind wheel and a second wind wheel which are axially arranged at intervals, and the following relation is satisfied by the distance S1 between the first wind wheel and the second wind wheel, the length H1 of the first wind wheel in the axial direction and the length H2 of the second wind wheel in the axial direction: s1< (H1 + H2)/2, a better matching relation between the first wind wheel and the second wind wheel can be achieved, and noise is lower while larger air volume is generated under lower energy consumption.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a fan device and an air conditioner outdoor unit.
Background
The air conditioner is a necessary daily electric appliance, and the function and the quality of the air conditioner directly influence the daily life of people. The existing air conditioner usually adopts an axial flow fan system to provide circulating air volume for an outdoor unit to heat exchange of a heat exchanger, and the size of the air volume is closely related to the performance of the outdoor unit.
The inventor of the application discovers in long-term research and development that the existing air conditioner outdoor unit generally adopts a fan system with a single wind wheel, the air outlet flow has a large part of rotation speed component along the circumferential direction, the static pressure efficiency is low, the air quantity is improved, meanwhile, the noise is larger, and the air outlet flow and the static pressure efficiency cannot reach a better balance relation.
Disclosure of Invention
The invention provides a fan device and an air conditioner outdoor unit, and aims to solve the technical problem that the air volume and the noise of a single wind wheel fan system of the air conditioner outdoor unit in the prior art cannot be balanced.
In order to solve the above technical problem, one technical solution adopted by the present invention is to provide a fan apparatus, including:
the wind power generator comprises a first wind wheel and a second wind wheel, wherein the first wind wheel and the second wind wheel are axially arranged at intervals;
wherein a distance S1 between the first wind wheel and the second wind wheel, a length H1 of the first wind wheel in the axial direction, and a length H2 of the second wind wheel in the axial direction satisfy the following relationship: s1< (H1 + H2)/2.
In a particular embodiment, the spacing S1 of the first rotor and the second rotor satisfies the following relationship: s1 is more than or equal to 20mm and less than or equal to 70mm.
In a specific embodiment, the fan device still includes the kuppe, the kuppe cover is located the periphery of first wind wheel and second wind wheel, the kuppe includes the main part, the part of first wind wheel set up in the main part, and be close to main part air inlet one end, at least part of second wind wheel set up in the main part and be close to main part air-out one end, first wind wheel air inlet one end with the interval S2 of main part air inlet one end, and first wind wheel is in axial length H1 satisfies following relation: S2/H1 is more than 0.4 and less than 0.7.
In a specific embodiment, a distance S3 between an air outlet end of the second wind wheel and an air outlet end of the main body portion, and a length H2 of the second wind wheel in the axial direction satisfy the following relationship: S3/H2 is more than 0 and less than 0.25.
In a specific embodiment, the main body portion has the same diameter in the axial direction, the nacelle further includes a first gradually-changing portion connected to an air inlet end of the main body portion and a second gradually-changing portion connected to an air outlet end of the main body portion, a distance S3 between an air outlet end of the second wind wheel and an air outlet end of the main body portion, and a length H3 of the second gradually-changing portion in the axial direction satisfy the following relationship: s3< H3.
In a specific embodiment, the length H4 of the first gradually-changing portion in the axial direction and the outer diameter D1 of the first wind wheel satisfy the following relationship: H4/D1 is more than 0.06 and less than 0.2.
In a specific embodiment, the pressure-rise distribution ratio of the first wind wheel to the second wind wheel is 0.6 to 1.
In a specific embodiment, the wind turbine apparatus further includes a guide vane 150, the guide vane is axially spaced from the first wind wheel and the second wind wheel respectively, and a length H5 of the guide vane in the axial direction, a length H1 of the first wind wheel in the axial direction, and a length H2 of the second wind wheel in the axial direction satisfy the following relationship: 0.25 H5 is more than or equal to (H1 + H2) and less than or equal to 0.75 (H1 + H2).
In a specific embodiment, the guide vane is disposed on a side of the first wind wheel facing away from the second wind wheel, and a distance S4 between the guide vane and the first wind wheel in the axial direction, a length H1 of the first wind wheel in the axial direction, and a length H2 of the second wind wheel in the axial direction satisfy the following relationships: 0.05 S4 is more than or equal to (H1 + H2) and less than or equal to 0.25 (H1 + H2); or
The stator set up in the second wind wheel deviates from one side of first wind wheel, the stator with the second wind wheel is followed ascending interval S5 of axial, first wind wheel is in ascending length H1 of axial, the second wind wheel is in ascending length H2 of axial satisfies the following relation: 0.05 S5 is more than or equal to (H1 + H2) and less than or equal to 0.25 (H1 + H2).
In order to solve the above technical problem, another technical solution of the present invention is to provide an outdoor unit of an air conditioner, including a heat exchanger and the above fan device, where the fan device is used for guiding airflow to pass through the heat exchanger.
The fan device comprises a first wind wheel and a second wind wheel which are axially arranged at intervals, wherein the following relation is satisfied by the distance S1 between the first wind wheel and the second wind wheel, the length H1 of the first wind wheel in the axial direction and the length H2 of the second wind wheel in the axial direction: s1< (H1 + H2)/2, a better matching relation between the first wind wheel and the second wind wheel can be achieved, and noise is lower while larger air volume is generated under lower energy consumption.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
fig. 1 is a schematic perspective view of an outdoor unit of an air conditioner according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view illustrating an outdoor unit of an air conditioner according to an embodiment of the present invention;
fig. 3 is a schematic partial sectional view illustrating an outdoor unit of an air conditioner according to an embodiment of the present invention;
FIG. 4 is a schematic diagram illustrating a relationship between a position of a first wind wheel in a wind deflector and a change in noise in an outdoor unit of an air conditioner according to an embodiment of the present invention;
FIG. 5 is a schematic diagram illustrating a relationship between a position of a second wind wheel in a wind deflector and a change in noise in an outdoor unit of an air conditioner according to an embodiment of the present invention;
FIG. 6 is a schematic diagram illustrating a relationship between an air volume and a static pressure variation of a fan set and a single wind wheel fan according to an embodiment of the outdoor unit of an air conditioner of the present invention;
FIG. 7 is a schematic diagram illustrating a relationship between an air volume and a power variation of a fan set and a single wind wheel fan according to an embodiment of the outdoor unit of an air conditioner of the present invention;
FIG. 8 is a schematic diagram illustrating a relationship between an air volume and a noise variation of a fan set and a single wind wheel fan according to an embodiment of the outdoor unit of an air conditioner of the present invention;
FIG. 9 is a schematic diagram illustrating the relationship between the frequency and the noise variation of the fan set and the single wind wheel fan in an embodiment of the outdoor unit of an air conditioner of the present invention;
fig. 10 is a schematic perspective view of a heat exchanger according to an embodiment of an outdoor unit of an air conditioner of the present invention;
fig. 11 is a schematic bottom view of a heat exchanger according to an embodiment of the outdoor unit of an air conditioner of the present invention;
fig. 12 is a schematic perspective view of a heat exchanger according to another embodiment of an outdoor unit of an air conditioner of the present invention;
fig. 13 is a schematic bottom view of a heat exchanger according to another embodiment of the outdoor unit of an air conditioner of the present invention;
fig. 14 is a schematic perspective view illustrating an outdoor unit of an air conditioner according to another embodiment of the present invention;
fig. 15 is a schematic cross-sectional view illustrating an outdoor unit of an air conditioner according to another embodiment of the present invention;
fig. 16 is a schematic perspective view of a heat exchanger according to another embodiment of an outdoor unit of an air conditioner of the present invention;
fig. 17 is a schematic bottom view of a heat exchanger according to another embodiment of the outdoor unit of an air conditioner of the present invention;
fig. 18 is a schematic cross-sectional view illustrating an outdoor unit of an air conditioner according to another embodiment of the present invention;
fig. 19 is a schematic partial perspective view illustrating an outdoor unit of an air conditioner according to another embodiment of the present invention;
fig. 20 is a schematic partial sectional view illustrating an outdoor unit of an air conditioner according to another embodiment of the present invention;
fig. 21 is a schematic cross-sectional view illustrating an outdoor unit of an air conditioner according to another embodiment of the present invention;
fig. 22 is a schematic partial perspective view of an outdoor unit of an air conditioner according to another embodiment of the present invention;
fig. 23 is a partial sectional view schematically illustrating an outdoor unit of an air conditioner according to another embodiment of the present invention;
fig. 24 is a schematic partial perspective view illustrating an outdoor unit of an air conditioner according to another embodiment of the present invention;
fig. 25 is a schematic partial front view illustrating an outdoor unit of an air conditioner according to another embodiment of the present invention;
fig. 26 is a schematic partial sectional view illustrating an outdoor unit of an air conditioner according to another embodiment of the present invention;
fig. 27 is a schematic top view of a part of an outdoor unit of an air conditioner according to another embodiment of the present invention;
fig. 28 is a schematic partial perspective view illustrating an outdoor unit of an air conditioner according to another embodiment of the present invention;
fig. 29 is a partial schematic front view illustrating an outdoor unit of an air conditioner according to another embodiment of the present invention;
fig. 30 is a schematic partial sectional view illustrating an outdoor unit of an air conditioner according to another embodiment of the present invention;
fig. 31 is a schematic partial top view of an outdoor unit of an air conditioner according to another embodiment of the present invention.
Detailed Description
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 only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
The terms "first", "second" and "first" in this application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless explicitly specifically limited otherwise. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements but may alternatively include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. While the term "and/or" is merely one type of association that describes an associated object, it means that there may be three types of relationships, e.g., a and/or B, which 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.
Referring to fig. 1 and 2, an embodiment of the outdoor unit 10 of the air conditioner of the present invention includes at least two wind wheels and a heat exchanger 210, where the at least two wind wheels are disposed at intervals along an axial direction thereof, and the heat exchanger 210 is disposed opposite to the at least two wind wheels, and a ratio of a distance R1 between two opposite ends of the at least two wind wheels in the axial direction to a length R2 of the heat exchanger 210 in the axial direction is 0.1 to 0.4, for example, 0.1, 0.2, or 0.4. Through setting up two at least wind wheels, can be in predetermineeing the within range with noise control when improving the amount of wind, and its static pressure efficiency is higher, thereby can promote fan efficiency, and through the ratio relation of the distance of two at least wind wheels in the axial between the both ends of carrying on the back mutually and heat exchanger 210 length in the axial, make the amount of wind that two at least wind wheels produced can with heat exchanger 210's size cooperation, reach better heat transfer effect, silence effect and the effect of eliminating the vibration.
In an embodiment, the ratio of the distance R1 between the two axially opposite ends of the at least two wind wheels to the axial length of the heat exchanger 210 is 0.28 to 0.39, such as 0.28, 0.33, or 0.39, and the like, so that the air volume generated by the at least two wind wheels can be better matched with the size of the heat exchanger 210, and a better heat exchange effect, a better mute effect, and a better vibration elimination effect can be achieved.
In an embodiment, the ratio of the area of the circle where the outer diameters of the at least two wind wheels are located to the area of the air inlet side of the heat exchanger 210 is 0.089 to 0.242, such as 0.089, 0.15, or 0.242, and the ratio of the outer diameters of the at least two wind wheels to the area of the air inlet side of the heat exchanger 210 may be 2.04 × 10 -4 mm -1 To 3.63X 10 -4 mm -1 E.g. 2.04X 10 -4 mm -1 、3.25×10 - 4 mm -1 Or 3.63X 10 -4 mm -1 Etc. capable of making the air volume of the air flow generated by at least two wind wheelsThe heat exchange capacity of the heat exchanger 210 is better matched, so that the heat exchange efficiency of the outdoor unit 10 of the air conditioner, the energy consumption and the noise reduction are better combined. Wherein, the area of the air inlet side of the heat exchanger 210 is defined as the surface area of the inner side of the heat exchanger 210.
In an embodiment, the outer diameters of the at least two wind wheels are 560mm to 850mm, for example, 610mm to 750mm, and may be 560mm, 610mm, 700mm, 750mm, or 850mm, so that the air volume and the air speed of the airflow generated by the at least two wind wheels can cooperate with the heat exchanger 210 to achieve a better heat exchange effect, a better mute effect, and a better vibration elimination effect.
In one embodiment, the heat exchanger 210 has an air intake side area of 2.34 × 10 6 mm 2 To 2.75X 10 6 mm 2 E.g. 2.34 x 10 6 mm 2 、2.5×10 6 mm 2 Or 2.75X 10 6 mm 2 And the like, so that the heat exchange capacity of the heat exchanger 210 can be matched with at least two wind wheels, and a better heat exchange effect and a silencing effect are achieved.
In an embodiment, the outdoor unit 10 is in a top-outlet type, and in other embodiments, the outdoor unit may also be in a bottom-outlet type or a side-outlet type, which is not limited herein.
In an embodiment, the pitch S1 of the at least two wind wheels satisfies the following relation: s1 is more than or equal to 20mm and less than or equal to 70mm, for example 20mm, 50mm or 70mm, the problem that the air volume loss generated by the lower layer wind wheel is too large due to too large distance between at least two wind wheels can be avoided, and the problem that the adjacent wind wheels generate interference to damage the wind wheel structure due to too small distance between at least two wind wheels can also be avoided.
Referring also to fig. 3, in an embodiment, the at least two wind turbines include a first wind turbine 110 and a second wind turbine 120, the second wind turbine 120 is disposed on a side of the first wind turbine 110 facing away from the heat exchanger 210, and an outer diameter D1 of the first wind turbine 110 and an outer diameter D2 of the second wind turbine 120 satisfy the following relationship: d2 is not less than 0.7D1, for example, D2=0.7D1, D2= D1 or D2=1.2D1, so that the first wind wheel 110 and the second wind wheel 120 can cooperate to generate large air volume and generate small noise.
When D1= D2, the outer diameter D1 of the first wind rotor 110, the outer diameter D2 of the second wind rotor 120, the length H1 of the first wind rotor 110 in the axial direction, and the length H2 of the second wind rotor 120 in the axial direction satisfy the following relationship: 1 ≦ H2/H1 ≦ 1.2, for example, H2/H1=1, H2/H1=1.1, or H2/H1=1.2, etc., by setting the length H1 of the first wind turbine 110 in the axial direction and the length H2 of the second wind turbine 120 in the axial direction to be equal, the overall air volume can be made larger, and the pressure difference distribution of the first wind turbine 110 and the second wind turbine 120 is also 1:1, so that the transition of the air flow from the first wind turbine 110 to the second wind turbine 120 is made smoother, and the noise reduction effect is better; by setting the length H1 of the first wind wheel 110 in the axial direction to be smaller than the length H2 of the second wind wheel 120 in the axial direction, the pressure rise effect of the first wind wheel 110 can be weakened, so that the air flow prerotation effect at the lower portion where the first wind wheel 110 is located is better.
In an embodiment, by adjusting the length H1 of the first wind turbine 110 in the axial direction and the length H2 of the second wind turbine 120 in the axial direction, the pressure-rise ratio of the first wind turbine 110 and the second wind turbine 120 can be adjusted, wherein the pressure-rise distribution ratio of the first wind turbine 110 and the second wind turbine 120 is 0.6 to 1, for example 0.76 to 0.84, and specifically may be 0.6, 0.76, 0.8, 0.84, or 1, and the like, so that the air pressure between the first wind turbine 110 and the second wind turbine 120 has less influence and can better operate.
When D1= D2, the spacing S1 of the first wind rotor 110 and the second wind rotor 120 satisfies the following relationship: the size of S1 is more than or equal to 20mm and less than or equal to 40mm, for example, S1 is more than or equal to 26mm and less than or equal to 32mm, specifically, S1=20mm, S1=26mm, S1=30mm, S1=32mm or S1=40mm, etc., so that the first wind wheel 110 and the second wind wheel 120 can achieve a better matching relationship, and noise can be reduced while generating a larger air volume.
The outer diameters of the first wind wheel 110 and the second wind wheel 120 are set to be equal, so that the air drafting capacities of the first wind wheel and the second wind wheel are the same, the first wind wheel and the second wind wheel can be matched with each other better, and noise can be reduced while large air volume is generated.
In an embodiment, a length H1 of the first wind rotor 110 in the axial direction, a length H2 of the second wind rotor 120 in the axial direction, and a distance S1 between the first wind rotor 110 and the second wind rotor 120 satisfy the following relationship: s1< (H1 + H2)/2, for example, S1 can be (H1 + H2)/3, (H1 + H2)/4 or (H1 + H2)/5, etc., which can enable the first wind wheel 110 and the second wind wheel 120 to achieve better matching relationship, and lower noise while generating larger air volume under lower energy consumption.
In an embodiment, the outdoor unit 10 of the air conditioner may further include a wind deflector 130, and the wind deflector 130 is sleeved on the peripheries of the first wind wheel 110 and the second wind wheel 120, so as to reduce the air leakage at the top of the second wind wheel 120, thereby achieving the purpose of increasing the air volume and reducing the noise at the same rotation speed.
In an embodiment, the air guide sleeve 130 includes a main body portion 131, a first gradually changing portion 132 connected to an air inlet end of the main body portion 131, and a second gradually changing portion 133 connected to an air outlet end of the main body portion 131, diameters of the main body portion 131 in an axial direction are the same, a cross-sectional area of the first gradually changing portion 132 in a vertical direction of the axial direction gradually increases toward a direction close to the heat exchanger 210, and a cross-sectional area of the second gradually changing portion 133 in the vertical direction of the axial direction gradually increases toward a direction away from the heat exchanger 210, so that the air flow flows into and out of the air guide sleeve 130.
In an embodiment, a portion of the first wind wheel 110 is disposed in the main body 131 and is close to an air inlet end of the main body 131, so as to facilitate lateral air entering of the first wind wheel 110, and at least a portion of the second wind wheel 120 is disposed in the main body 131 and is close to an air outlet end of the main body 131, so that air flows generated by the first wind wheel 110 and the second wind wheel 120 can be guided by the air guide sleeve 130.
Referring to fig. 4, in an embodiment, a distance S2 between an air inlet end of the first wind wheel 110 and an air inlet end of the main body 131 and a length H1 of the first wind wheel 110 in the axial direction satisfy the following relationship of 0.4 < S2/H1 < 0.7, for example, 0.57 < S2/H1 < 0.62, and a specific S2/H1 may be 0.45, 0.5, 0.58, 0.6, or 0.65, etc., so that the inlet air flow of the air guide sleeve 130 is smoother, the air volume is larger, and the noise is smaller. The air inlet end of the main body 131 is the end (the lower end of the cylindrical section in fig. 3) where the main body 131 is connected to the first gradually changing portion 132, and the air outlet end of the main body 131 is the end (the upper end of the cylindrical section in the drawing) where the main body 131 is connected to the second gradually changing portion 133.
Referring to fig. 5, in an embodiment, when the air outlet end of the second wind wheel 120 is located above the air outlet end of the main body 131, the distance S3 between the air outlet end of the second wind wheel 120 and the air outlet end of the main body 131 is a positive value, and when the air outlet end of the second wind wheel 120 is located below the air outlet end of the main body 131, the distance S3 between the air outlet end of the second wind wheel 120 and the air outlet end of the main body 131 is a negative value, the distance S3 between the air outlet end of the second wind wheel 120 and the air outlet end of the main body 131, and the axial length H2 of the second wind wheel 120 satisfy the following relationship: 0 < | S3/H2| < 0.25, for example | S3/H2| can be 0.1, 0.15 or 0.2, etc., so that the air guide sleeve 130 can achieve better air guide effect on the air flow generated by the first wind turbine 110 and the second wind turbine 120 and has less noise.
In an embodiment, a distance S3 between an end of the second wind wheel 120 facing away from the heat exchanger 210 and an end of the main body portion 131 facing away from the heat exchanger 210, and a length H3 of the second gradually-changing portion 133 in the axial direction satisfy the following relationship: s3< H3, so that the first wind wheel 110 and the second wind wheel 120 can achieve a better air outlet effect, and can generate larger air volume and smaller noise.
In an embodiment, the length H4 of the first transition portion 132 in the axial direction and the outer diameter D1 of the first wind rotor 110 satisfy the following relationship: 0.06 < H4/D1 < 0.2, for example, H4/D1 can be 0.08, 0.1 or 0.15, so that the first wind wheel 110 can achieve a better wind inlet effect, and is beneficial to generating larger wind volume and smaller noise.
In an embodiment, a distance R1 between two axially opposite ends of the first wind wheel 110 and the second wind wheel 120, and a length R3 of the nacelle 130 in the axial direction satisfy the following relationship, where 0.7 < R1/R3 < 0.95, for example, R1/R3 may be 0.75, 0.8, or 0.9, and the like, so that the nacelle 130 has a better flow guiding effect on the airflow generated by the first wind wheel 110 and the second wind wheel 120, and the first wind wheel 110 and the second wind wheel 120 have a higher working efficiency, which is beneficial to increasing the air volume and reducing the noise generation.
In an embodiment, the pressure-rise distribution ratio of the first wind turbine 110 to the second wind turbine 120 is 0.6 to 1, for example, 0.76 to 0.84, and specifically may be 0.6, 0.76, 0.8, 0.84, or 1, etc., so that the first wind turbine 110 and the second wind turbine 120 have less influence on the air pressure and can operate better.
In an embodiment, the outdoor unit 10 further includes a driving member 140, the driving member 140 can drive the first wind wheel 110 and the second wind wheel 120 to rotate in opposite directions, and the wind speed and the radial speed at the outlet of the driving member 140 are smaller, so that the wind discharging is more facilitated, the return air phenomenon is not easy to generate, and the pressure resistance of the driving member is stronger, so that the problem of high pressure drop outside the unit during the installation process of the multi-split outdoor unit can be solved.
In other embodiments, the first wind turbine 110 and the second wind turbine 120 may also be driven to rotate by two driving members, which is not limited herein.
Referring to table 1, taking the diameter of the first wind wheel 110 and the diameter of the second wind wheel 120 as an example of 700mm, compared with the Shan Fenglun fan, the fan set formed by the two wind wheels in the present application can achieve the same air volume with smaller rotation speed and power, can reduce the hardware requirement on the driving element, and can reduce the noise value and improve the sound quality.
| Prior art solution (Single wind wheel blower) | This application (Fan group) | |
| Fan blade diameter (mm) | 700 | 700 |
| Rotational speed (rpm) | 920 | 460 |
| Air volume (m 3/h) | 12000 | 12000 |
| Power (W) | 604 | 561 |
| Noise (dB) | 64.2 | 59.6 |
Referring to fig. 6 to 9, compared with the existing single wind wheel fan, the wind turbine set in the present application has the advantages that when the same preset wind volume is reached, the static pressure is larger, the air supply distance can be longer, the required power is smaller, and the generated noise is lower. And when the rotating frequency is the same, the generated noise is lower.
Referring to fig. 10 and 11 together, in an embodiment, the heat exchanger 210 is a U-shaped heat exchanger, the heat exchanger 210 is formed with a first air inlet surface 211, a second air inlet surface 212, and a third air inlet surface 213, an outer diameter D1 of the first wind wheel 110, a length L1 of the first air inlet surface 211 in a vertical direction of an axial direction, a length L1 of the first air inlet surface 211 in an extending direction of the first air inlet surface 211, a length L2 of the second air inlet surface 212 in the vertical direction of the axial direction, a length L3 of the third air inlet surface 213 in the vertical direction of the axial direction, and the extending direction of the third air inlet surface 213 satisfy the following relationships: 0.85D1 and L1 and L2 and L3 and L2 and L5 D1 and 0.85D1 and L2 and L5 D1 respectively enable air inlet surfaces of the heat exchanger 210 to achieve a good air inlet effect, so that heat exchange efficiency is improved, and the heat exchanger can be matched with the first wind wheel 110 and the second wind wheel 120 to achieve a good noise reduction effect.
In an embodiment, the heat exchanger 210 includes a plurality of fins 214 arranged at intervals and a plurality of rows of heat exchange tubes 215 arranged through the plurality of fins 214, the plurality of fins 214 may have arc louvers (not shown in the figure), the number of rows of the heat exchange tubes 210 is 2 to 3, for example, 2, 2.5 (one side is 2, and the other side is 3) or 3, the tube diameter of the heat exchange tube 215 is 5mm to 9.5mm, for example, 6.2mm to 7.3mm, specifically, 5mm, 6mm, 6.2mm, 7.3mm, or 9.5mm, the distance between two adjacent fins in the plurality of fins 214 is 1.3mm to 1.6mm, for example, 1.34mm to 1.48mm, specifically, 1.3mm, 1.34mm, 1.4mm, 1.48mm, or 1.6mm, so that the heat exchanger 210 can achieve a better heat exchange effect, and can further cooperate with the first wind wheel 110 and the second wind wheel 120 to achieve a better noise reduction effect.
In an embodiment, the pipe diameters of the rows of heat exchange pipes 215 are in a reverse relationship with the outer diameters of the at least two wind wheels, and as the pipe diameter of the heat exchange pipe 215 is larger, the heat exchange area of the heat exchanger 210 (which is defined as the area of the outer surfaces of the heat exchange pipe 215 and the fins 214 of the heat exchanger 210) is larger, the pipe diameters of the heat exchange pipes 215 and the outer diameters of the at least two wind wheels are set to be in a reverse relationship, so that balance between the heat exchange area and the air volume can be achieved, and certain heat exchange efficiency can be maintained.
In an embodiment, the number of rows of the heat exchange tubes 215 is in a reverse relationship with the outer diameters of the at least two wind wheels, and the larger the number of rows of the heat exchange tubes 215 is, the larger the heat exchange area of the heat exchanger 210 is, so that the number of rows of the heat exchange tubes 215 is set in a reverse relationship with the outer diameters of the at least two wind wheels, the heat exchange area and the air volume can be balanced, and certain heat exchange efficiency can be maintained.
In an embodiment, the distance between two adjacent fins in the plurality of fins 214 is in a reverse relationship with the outer diameters of the at least two wind wheels, and since the larger the distance between two adjacent fins in the plurality of fins 214 is, the faster the heat exchange of the fins 214 is, the reverse relationship between the distance between two adjacent fins in the plurality of fins 214 and the outer diameters of the at least two wind wheels is set, so that the heat exchange speed and the air volume can be balanced, and a certain heat exchange efficiency can be maintained.
Referring to fig. 12 and 13, in another embodiment, the heat exchanger 220 may also be a G-type heat exchanger, and the heat exchanger 220 is formed with four air inlet surfaces, which have a larger area and a better heat exchange effect.
In other embodiments, the heat exchanger may also be an I-type heat exchanger, a V-type heat exchanger, or a mouth-type heat exchanger, which is not limited herein.
Referring to fig. 14 to 17, another embodiment of the outdoor unit 10 of the air conditioner of the present invention includes two sets of fan devices 100, a heat exchanger 230 and a casing 320, the two sets of fan devices 100 and the heat exchanger 230 are respectively disposed in the casing 320, each set of fan device 100 includes a first wind wheel 110, a second wind wheel 120, a wind deflector 130 and a driving element 140, the casing 320 forms air outlets 321 and 322, wherein the structures of the first wind wheel 110, the second wind wheel 120, the wind deflector 130 and the driving element 140 refer to the above embodiments, and are not described again. The two sets of fan devices 100 are arranged on the outdoor unit 10 of the air conditioner, so that the air volume and the air pressure can be further increased, the fan efficiency is improved, and the low-frequency tone quality of the fan device 100 formed by the two wind wheels is better than that of the fan device 100 with the existing single wind wheel, so that the low-frequency beat vibration noise generated by the coupling of the fan blades of the two single wind wheels can be avoided by adopting the two sets of fan devices 100.
In an embodiment, the heat exchanger 230 is a G-type heat exchanger corresponding to the two sets of fan devices 100, wherein the ratio of the area of the circle where the outer diameter of the first wind wheel 110 or the second wind wheel 120 is located to the area of the air inlet side of the heat exchanger 230 is 0.052 to 0.089, such as 0.052, 0.06, or 0.089, and the ratio of the outer diameter of the at least two wind wheels to the area of the air inlet side of the heat exchanger 210 may be 1.18 × 10 -4 mm -1 To 2.04X 10 -4 mm -1 E.g. 1.18X 10 -4 mm -1 、1.76×10 -4 mm -1 Or 2.04X 10 - 4 mm -1 And the air volume of the air flow generated by the at least two wind wheels and the heat exchange capacity of the heat exchanger 230 can be better matched, the heat exchange efficiency is improved, and the noise and the energy consumption are reduced.
In one embodiment, the heat exchanger 230 has an air intake side area of 2.75 × 10 6 mm 2 To 4.76X 10 6 mm 2 For example 2.75X 10 6 mm 2 、3×10 6 mm 2 Or 4.76X 10 6 mm 2 And the like, the heat exchange capacity of the heat exchanger 230 can be matched with the first wind wheel 110 and the second wind wheel 120, and a better heat exchange effect and a silencing effect are achieved.
In an embodiment, the air intake side area of the heat exchanger 230 is 1.5 times to 2 times, for example, 1.74 times to 1.87 times, specifically 1.5 times, 1.74 times, 1.8 times, 1.87 times or 2 times of the air intake side area of the heat exchanger 210 or the heat exchanger 220 in the above embodiments.
In an embodiment, the two sets of fan devices 100 may have the same size or different sizes, for example, the size of the fan device 100 corresponding to three air inlet surfaces of the heat exchanger 230 on the right side shown in fig. 17 may be larger than the size of the fan device 100 corresponding to two air inlet surfaces of the heat exchanger 230 on the left side, so that the air draft capacity of the fan device 100 is matched with the heat exchange capacity of the corresponding heat exchanger 230, and further, the heat exchange efficiency can be improved, and the noise and energy consumption can be reduced.
In one embodiment, the two sets of fan devices 100 are disposed in the same layer, and can be matched with the heat exchanger 230 with a larger area on the air inlet side. In other embodiments, the two sets of fan devices 100 may also be coaxially disposed, so as to further increase the wind pressure, and be suitable for special occasions requiring high static pressure.
Referring to fig. 18 to 20, another embodiment of the air conditioner outdoor unit 10 of the present invention includes a first wind wheel 110, a second wind wheel 120, and a guide vane 150, wherein the first wind wheel 110, the second wind wheel 120, and the guide vane 150 are respectively axially spaced, and the structures of the first wind wheel 110 and the second wind wheel 120 are referred to the above embodiment of the air conditioner outdoor unit 10, and are not repeated herein.
In an embodiment, the length H5 of the vane 150 in the axial direction, the length H1 of the first wind wheel 110 in the axial direction, and the length H2 of the second wind wheel 120 in the axial direction satisfy the following relationship: 0.25 H5 is greater than or equal to (H1 + H2) and less than or equal to 0.75 (H1 + H2), for example, 0.48 (H1 + H2) and less than or equal to H5 and less than or equal to 0.62 (H1 + H2), specifically, H5=0.25 (H1 + H2), H5=0.48 (H1 + H2), H5=0.5 (H1 + H2), H5=0.25 (H1 + H2), or H5=0.75 (H1 + H2), so that the guide vane 150 can be matched with the first wind wheel 110 and the second wind wheel 120 to achieve a better flow guiding effect, and further achieve better heat exchange effect, mute effect, and vibration elimination effect.
In an embodiment, the guide vane 150 is disposed on a side of the first wind wheel 110 away from the second wind wheel 120, and can provide a pre-rotation effect, rectify a complex airflow, reduce energy loss of the airflow, and increase an air volume.
In an embodiment, the distance S4 of the guide vane 150 from the first wind wheel 110 in the axial direction, the length H1 of the first wind wheel 110 in the axial direction, and the length H2 of the second wind wheel 120 in the axial direction satisfy the following relationship: 0.05 (H1 + H2) ≦ S4 ≦ 0.25 (H1 + H2), for example, 0.11 (H1 + H2) ≦ S4 ≦ 0.19 (H1 + H2), and specifically, S4=0.05 (H1 + H2), S4=0.11 (H1 + H2), S4=0.15 (H1 + H2), S4=0.19 (H1 + H2), or S4=0.25 (H1 + H2), which can avoid poor flow guiding effect caused by too far distance between the guide vane 150 and the first wind wheel 110, or damage to the guide vane 150 or the structure of the first wind wheel 110 caused by too close distance between the guide vane 150 and the first wind wheel 110.
Referring to fig. 21 to 23, in another embodiment, the guide vane 160 may also be disposed on a side of the second wind wheel 120 away from the first wind wheel 110, the second wind wheel 120 rotates in a direction opposite to the first wind wheel 110, so as to recover a circumferential rotation speed component of the airflow at the air outlet end of the first wind wheel 110, and the guide vane 160 is disposed to further recover the circumferential rotation speed component of the airflow at the air outlet end of the second wind wheel 120, so that the airflow can flow out in the axial direction, and thus, a dynamic pressure recovery effect and a static pressure improvement effect can be achieved, and thus, the overall air volume and the fan efficiency can be improved.
In an embodiment, the distance S5 of the guide vane 160 from the second wind wheel 120 in the axial direction, the length H1 of the first wind wheel 110 in the axial direction, and the length H2 of the second wind wheel 120 in the axial direction satisfy the following relationship: 0.05 (H1 + H2) ≦ S5 ≦ 0.25 (H1 + H2), for example, 0.11 (H1 + H2) ≦ S5 ≦ 0.19 (H1 + H2), and specifically, S5=0.05 (H1 + H2), S5=0.11 (H1 + H2), S5=0.15 (H1 + H2), S5=0.19 (H1 + H2), or S5=0.25 (H1 + H2), which can avoid poor flow guiding effect due to too far distance between the guide vane 150 and the second wind wheel 120, or damage to the guide vane 150 or the structure of the second wind wheel 120 due to too close distance between the guide vane 150 and the second wind wheel 120.
Referring to fig. 24 to 27, another embodiment of the outdoor unit 10 of the present invention includes a first wind wheel 110, a second wind wheel 120, and a wind deflector 170, wherein the structures of the first wind wheel 110 and the second wind wheel 120 refer to the above embodiment of the outdoor unit 10, and are not described herein again.
In one embodiment, the nacelle 170 is cylindrically configured, and the outer diameter D1 of the first wind rotor 110, the outer diameter D2 of the second wind rotor 120, the length H1 of the first wind rotor 110 in the axial direction, and the length H2 of the second wind rotor 120 in the axial direction satisfy the following relationship: 1.01 ≦ D1/D2 ≦ 1.03,1 ≦ H2/H1 ≦ 1.15, for example, D1/D2=1.01, D1/D2=1.02, D1/D2=1.03, etc., H2/H1=1, H2/H1=1.1, or H2/H1=1.15, etc., since the blade tip of the wind wheel is a main source of noise generation, and a vortex is generated outside the blade tip of the second wind wheel 120, by setting the outer diameter of the first wind wheel 110 to be larger than the outer diameter of the second wind wheel 120, the vortex at the blade tip of the second wind wheel 120 can be blown away by wind around the first wind wheel 110, so that a better noise reduction effect can be achieved, and a better heat exchange effect can be achieved by cooperating with the heat exchanger 210.
Referring to fig. 28 to 31, another embodiment of the outdoor unit 10 of the present invention includes a first wind wheel 110, a second wind wheel 120, and a wind deflector 180, wherein the structures of the first wind wheel 110 and the second wind wheel 120 refer to the above embodiment of the outdoor unit 10, and are not described again here.
In an embodiment, the cross section of the top of the air guide sleeve 180 in the axial vertical direction is oval, so that at least part of dynamic pressure of air flow at the top of the air guide sleeve 180 can be converted into static pressure, thereby improving the pressure difference between the first wind wheel 110 and the second wind wheel 120, and further improving the overall air volume and reducing energy consumption and noise.
In one embodiment, the outer diameter D1 of the first wind turbine 110 and the long axis D3 of the nacelle 180 satisfy the following relationship: D3/D1 is greater than or equal to 1.04 and less than or equal to 1.1, for example, D3/D1=1.04, D3/D1=1.08, or D3/D1=1.1, etc., so that the wind deflector 180 can better guide the airflow generated by the first wind wheel 110 and the second wind wheel 120, and further achieve better heat exchange effect, mute effect, and vibration elimination effect.
In one embodiment, the outer diameter D1 of the first wind turbine 110 and the long axis D3 of the nacelle 180 satisfy the following relationship: D3/D1 is not less than 1.06 and not more than 1.08, for example, D3/D1=1.06, D3/D1=1.07, or D3/D1=1.08, etc., so that the air guide sleeve 180 can further achieve a better air guide effect on the air flow generated by the first wind wheel 110 and the second wind wheel 120, and further achieve a better heat exchange effect, a mute effect, and a vibration elimination effect.
In one embodiment, the outer diameter D1 of the first wind turbine 110 and the minor axis D4 of the nacelle 180 satisfy the following relationship: D4/D1 is not less than 1.02 and not more than 1.05, for example, D4/D1=1.02, D4/D1=1.03, or D4/D1=1.05, etc., so that the wind deflector 180 can better deflect the airflow generated by the first wind wheel 110 and the second wind wheel 120, and further achieve better heat exchange effect, mute effect and vibration elimination effect.
In one embodiment, the outer diameters D1, D2 of the first and second wind turbines 110, 120 satisfy the following relationship: d2 is not less than 0.7D1, for example, D2=0.7D1, D2= D1 or D2=1.2D1, so that the first wind wheel 110 and the second wind wheel 120 can cooperate to generate large air volume and generate small noise.
In one embodiment, the outer diameter D1 of the first wind rotor 110 satisfies the following relationship: d1 is more than or equal to 560mm and less than or equal to 850mm, for example, D1 is more than or equal to 630mm and less than or equal to 710mm, specifically, 560mm, 630mm, 700mm, 710mm or 850mm, so that the air volume and the air speed of the airflow generated by the first wind wheel 110 can achieve better effects, and better heat exchange effect, mute effect and vibration elimination effect can be achieved.
In an embodiment, the outer diameter D1 of the first wind rotor 110, the hub diameter D11 of the first wind rotor 110 satisfy the following relation: 2 ≦ D1/D11 ≦ 4.5, for example, 3.3 ≦ D1/D11 ≦ 4.1, specifically, D1/D11=2, D1/D11=3, D1/D11=3.3, D1/D11=4.1, or D1/D11=4.5, etc., so that the structure of the first wind wheel 110 itself can achieve a better matching effect with the nacelle 180.
In one embodiment, outer diameter D2 of second wind rotor 120, hub diameter D21 of second wind rotor 120 satisfy the following relationship: 2 ≦ D2/D21 ≦ 4.5, for example, 3.4 ≦ D2/D21 ≦ 4.2, specifically, D2/D21=2, D2/D21=3, D2/D21=3.4, D2/D21=4.2, or D2/D21=4.5, etc., so that the structure of the first wind wheel 120 itself can achieve a better matching effect with the nacelle 180.
In an embodiment, the length H1 of the first wind rotor 110 in the axial direction, the length H2 of the second wind rotor 120 in the axial direction, and the distance S1 between the first wind rotor 110 and the second wind rotor 120 satisfy the following relationship: s1< (H1 + H2)/2, for example, S1 can be (H1 + H2)/3, (H1 + H2)/4 or (H1 + H2)/5, etc., which can make the first wind wheel 110 and the second wind wheel 120 achieve better matching relationship, and can reduce noise while generating larger air volume.
In an embodiment, the pressure-rise distribution ratio of the first wind turbine 110 to the second wind turbine 120 is 0.6 to 1, for example, 0.76 to 0.84, and specifically may be 0.6, 0.76, 0.8, 0.84, or 1, etc., so that the first wind turbine 110 and the second wind turbine 120 have less influence on the air pressure and can operate better.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (8)
1. A fan apparatus, characterized in that the fan apparatus comprises:
the wind power generator comprises a first wind wheel and a second wind wheel, wherein the first wind wheel and the second wind wheel are axially arranged at intervals;
wherein, the distance S1 between the first wind wheel and the second wind wheel, the length H1 of the first wind wheel in the axial direction, and the length H2 of the second wind wheel in the axial direction satisfy the following relations: s1< (H1 + H2)/2;
the fan device further comprises a flow guide cover, the flow guide cover is sleeved on the peripheries of the first wind wheel and the second wind wheel and comprises a main body part, part of the first wind wheel is arranged in the main body part and is close to the air inlet end of the main body part, at least part of the second wind wheel is arranged in the main body part and is close to the air outlet end of the main body part, the main body part has the same diameter in the axial direction, and the flow guide cover further comprises a first gradual change part connected to the air inlet end of the main body part and a second gradual change part connected to the air outlet end of the main body part;
the distance S2 between the air inlet end of the first wind wheel and the air inlet end of the main body part and the length H1 of the first wind wheel in the axial direction meet the following relations: S2/H1 is more than 0.4 and less than 0.7;
the distance S3 between the air outlet end of the second wind wheel and the air outlet end of the main body part and the length H2 of the second wind wheel in the axial direction meet the following relations: S3/H2 is more than 0 and less than 0.25.
2. The fan arrangement of claim 1, wherein the spacing S1 of the first rotor and the second rotor satisfies the following relationship: s1 is more than or equal to 20mm and less than or equal to 70mm.
3. The fan device according to claim 1, wherein a distance S3 between an air outlet end of the second wind wheel and an air outlet end of the main body portion, and a length H3 of the second gradually-changing portion in the axial direction satisfy the following relationship: s3< H3.
4. The fan apparatus according to claim 3, wherein a length H4 of the first gradually-varying portion in the axial direction and an outer diameter D1 of the first wind wheel satisfy the following relationship: H4/D1 is more than 0.06 and less than 0.2.
5. The fan apparatus of claim 1, wherein the first wind wheel and the second wind wheel have a pressure-lift distribution ratio of 0.6 to 1.
6. The fan device of claim 1, further comprising a guide vane axially spaced from the first and second wind wheels, respectively, a length H5 of the guide vane in the axial direction, a length H1 of the first wind wheel in the axial direction, and a length H2 of the second wind wheel in the axial direction satisfying the following relationships: 0.25 H5 is more than or equal to (H1 + H2) and less than or equal to 0.75 (H1 + H2).
7. The fan device according to claim 6, wherein the guide vane is disposed on a side of the first wind wheel facing away from the second wind wheel, and a distance S4 between the guide vane and the first wind wheel in the axial direction, a length H1 of the first wind wheel in the axial direction, and a length H2 of the second wind wheel in the axial direction satisfy the following relationship: 0.05 S4 is more than or equal to (H1 + H2) and less than or equal to 0.25 (H1 + H2); or
The stator set up in the second wind wheel deviates from one side of first wind wheel, the stator with the second wind wheel is followed ascending interval S5 of axial, first wind wheel is in ascending length H1 of axial, the second wind wheel is in ascending length H2 of axial satisfies the following relation: 0.05 S5 is more than or equal to (H1 + H2) and less than or equal to 0.25 (H1 + H2).
8. An outdoor unit of an air conditioner, comprising a heat exchanger and the fan apparatus of any one of claims 1 to 7 for guiding an air flow through the heat exchanger.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011080566.1A CN114320958B (en) | 2020-10-10 | 2020-10-10 | Fan device and air condensing units |
| PCT/CN2021/121841 WO2022073454A1 (en) | 2020-10-10 | 2021-09-29 | Fan apparatus and air conditioner outdoor unit |
| EP21876972.7A EP4130483A4 (en) | 2020-10-10 | 2021-09-29 | Fan apparatus and air conditioner outdoor unit |
| US17/992,806 US20230078022A1 (en) | 2020-10-10 | 2022-11-22 | Fan apparatus and air conditioner outdoor unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011080566.1A CN114320958B (en) | 2020-10-10 | 2020-10-10 | Fan device and air condensing units |
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| CN114320958A CN114320958A (en) | 2022-04-12 |
| CN114320958B true CN114320958B (en) | 2022-12-06 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106481598A (en) * | 2016-12-26 | 2017-03-08 | 珠海格力电器股份有限公司 | Impeller assembly and axial flow blower |
| CN109958637A (en) * | 2019-04-22 | 2019-07-02 | 广东美的制冷设备有限公司 | The fan assembly of air-conditioner outdoor unit and air-conditioner outdoor unit with it |
| CN209558544U (en) * | 2019-01-08 | 2019-10-29 | 广东美的制冷设备有限公司 | Air conditioner |
| CN111043063A (en) * | 2018-10-15 | 2020-04-21 | 广东美的白色家电技术创新中心有限公司 | Counter-rotating fan |
| 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 |
| CN210688514U (en) * | 2019-09-06 | 2020-06-05 | 广东美的制冷设备有限公司 | Air conditioner outdoor unit and air conditioner |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6385752B2 (en) * | 2013-12-02 | 2018-09-05 | 三星電子株式会社Ｓａｍｓｕｎｇ Ｅｌｅｃｔｒｏｎｉｃｓ Ｃｏ．，Ｌｔｄ． | Outdoor unit for blower and air conditioner |
-
2020
- 2020-10-10 CN CN202011080566.1A patent/CN114320958B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106481598A (en) * | 2016-12-26 | 2017-03-08 | 珠海格力电器股份有限公司 | Impeller assembly and axial flow blower |
| CN111043063A (en) * | 2018-10-15 | 2020-04-21 | 广东美的白色家电技术创新中心有限公司 | Counter-rotating fan |
| CN209558544U (en) * | 2019-01-08 | 2019-10-29 | 广东美的制冷设备有限公司 | Air conditioner |
| CN109958637A (en) * | 2019-04-22 | 2019-07-02 | 广东美的制冷设备有限公司 | The fan assembly of air-conditioner outdoor unit and air-conditioner outdoor unit with it |
| CN210688514U (en) * | 2019-09-06 | 2020-06-05 | 广东美的制冷设备有限公司 | Air conditioner outdoor unit and 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 |
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