CN114320977B - Fan device and air conditioner outdoor unit - Google Patents
Fan device and air conditioner outdoor unit Download PDFInfo
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- CN114320977B CN114320977B CN202011079913.9A CN202011079913A CN114320977B CN 114320977 B CN114320977 B CN 114320977B CN 202011079913 A CN202011079913 A CN 202011079913A CN 114320977 B CN114320977 B CN 114320977B
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Abstract
The fan device comprises a first wind wheel, a second wind wheel and a guide cover, wherein the first wind wheel and the second wind wheel are axially arranged at intervals, the guide cover is sleeved on the peripheries of the first wind wheel and the second wind wheel, the guide cover comprises a main body part, a part of the first wind wheel is arranged in the main body part and is close to an air inlet end of the main body part, at least a part of the second wind wheel is arranged in the main body part and is close to an 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 relation: 0.4< S2/H1<0.7, the air inlet flow guide of the air guide sleeve is smoother, the air quantity is larger, and the noise is smaller.
Description
Technical Field
The application 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 used as a necessary daily electrical appliance, and the functions and the quality of the air conditioner directly influence the daily life of people. The existing air conditioner generally adopts an axial flow fan system to provide circulating air quantity for an outdoor unit so as to heat exchange of a heat exchanger, and the air quantity is closely related to the performance of the outdoor unit.
The inventor of the application finds in long-term research and development that a fan system with a single wind wheel is generally adopted in the existing air conditioner outdoor unit, a great part of rotation speed components along the circumferential direction exist in the air outlet airflow, the static pressure efficiency is low, larger noise can be generated while the air quantity is improved, and the two cannot achieve a good balance relation.
Disclosure of Invention
The application provides an air conditioner outdoor unit, which aims to solve the technical problem that the air quantity and 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 technical problem, the application adopts a technical scheme that a fan device is provided, which comprises:
the first wind wheel and the second wind wheel are axially arranged at intervals;
the air guide sleeve is sleeved on the peripheries of the first wind wheel and the second wind wheel, the air guide sleeve comprises a main body part, a part of the first wind wheel is arranged in the main body part and is close to an air inlet end of the main body part, and at least a part of the second wind wheel is arranged in the main body part and is close to an 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 relation: 0.4< S2/H1<0.7.
In a specific embodiment, the distance S3 between the air outlet end of the second wind wheel and the air outlet end of the main body portion, and the length H2 of the second wind wheel in the axial direction satisfy the following relationships: 0< S3/H2<0.25.
In a specific embodiment, the diameters of the main body portion along the axial direction are the same, the air guide sleeve further comprises a first gradual change portion connected to the air inlet end of the main body portion and a second gradual change portion connected to the air outlet end of the main body portion, the distance S3 between the air outlet end of the second wind wheel and the air outlet end of the main body portion, and the length H3 of the second gradual change portion in the axial direction satisfy the following relationship: s3< H3.
In a specific embodiment, the length H4 of the first gradual change portion in the axial direction and the outer diameter D1 of the first wind wheel satisfy the following relationship: <0.06H4/D1<0.2.
In a specific embodiment, the outer diameter D1 of the first wind wheel, the outer diameter D2 of 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 relationships: d1 =d2, 1.ltoreq.h2/h1.ltoreq.1.2.
In a specific embodiment, the outer diameter D1 of the first wind wheel, the outer diameter D2 of the second wind wheel, and the space S1 between the first wind wheel and the second wind wheel satisfy the following relationship: d1 =d2, 20 mm.ltoreq.s1.ltoreq.40 mm.
In a specific embodiment, the outer diameter D1 of the first wind wheel, the outer diameter D2 of 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 relationships: D1/D2 is more than or equal to 1.01 and less than or equal to 1.03,1, and H2/H1 is more than or equal to 1.15.
In a specific embodiment, the ratio of the pressure rise distribution of the first wind wheel to the pressure rise distribution of the second wind wheel is 0.6 to 1.
In a specific embodiment, the fan device further includes a guide vane, where the guide vane is axially spaced from the first wind wheel and the second wind wheel, and the length H5 of the guide vane in the axial direction, 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 relationships: 0.25 H1+H2 H5 is more 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, a distance S4 between the guide vane and the first wind wheel along the axial direction, a length H1 of the first wind wheel along the axial direction, and a length H2 of the second wind wheel along the axial direction satisfy the following relationships: 0.05 (H1+H2) S4 is more than or equal to 0.25 (H1+H2); or (b)
The guide vane is arranged on one side of the second wind wheel, which is away from the first wind wheel, the distance S5 between the guide vane and the second wind wheel in the axial direction, 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 meet the following relation: 0.05 (H1+H2) S5 is more than or equal to 0.25 (H1+H2).
In order to solve the above technical problems, another technical solution adopted by the present application is to provide an air conditioner outdoor unit, where the air conditioner outdoor unit includes a heat exchanger and a fan device as described above, and the fan device is used for guiding airflow through the heat exchanger.
The fan device comprises a first wind wheel, a second wind wheel and a guide cover, wherein the first wind wheel and the second wind wheel are axially arranged at intervals, the guide cover is sleeved on the peripheries of the first wind wheel and the second wind wheel, the guide cover comprises a main body part, a part of the first wind wheel is arranged in the main body part and is close to an air inlet end of the main body part, at least a part of the second wind wheel is arranged in the main body part and is close to an 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 relation: 0.4< S2/H1<0.7, the air inlet flow guide of the air guide sleeve is smoother, the air quantity is larger, and the noise is smaller.
Drawings
For a clearer description of the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the description below are only some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art, wherein:
fig. 1 is a schematic perspective view of an embodiment of an outdoor unit of an air conditioner according to the present application;
fig. 2 is a schematic cross-sectional view of an embodiment of an outdoor unit of an air conditioner according to the present application;
FIG. 3 is a schematic view of an air conditioner outdoor unit according to an embodiment of the present application;
FIG. 4 is a schematic diagram showing a relationship between a position of a first wind wheel in a dome and a noise variation in an embodiment of an outdoor unit of an air conditioner according to the present application;
FIG. 5 is a schematic diagram showing a relationship between a position of a second wind wheel in a dome and a noise variation in an embodiment of an outdoor unit of an air conditioner according to the present application;
FIG. 6 is a schematic diagram showing the relationship between the air volume and static pressure of a fan unit and a single-wind wheel blower in an embodiment of an outdoor unit of an air conditioner according to the present application;
FIG. 7 is a schematic diagram showing the relationship between the air volume and the power variation of the fan unit and the single wind wheel blower in an embodiment of the outdoor unit of the air conditioner;
FIG. 8 is a schematic diagram showing the relationship between the air volume and noise variation of the fan unit and the single wind wheel blower in an embodiment of the outdoor unit of the air conditioner;
FIG. 9 is a schematic diagram showing the frequency versus noise variation of a fan unit and a single wind wheel blower in an embodiment of an outdoor unit of an air conditioner according to the present application;
fig. 10 is a schematic perspective view illustrating a heat exchanger in an embodiment of an outdoor unit of an air conditioner according to the present application;
FIG. 11 is a schematic bottom view of a heat exchanger in an embodiment of an outdoor unit of the present application;
fig. 12 is a schematic perspective view illustrating a heat exchanger in another embodiment of an outdoor unit of an air conditioner according to the present application;
fig. 13 is a schematic bottom view of a heat exchanger in another embodiment of an outdoor unit of the present application;
fig. 14 is a schematic perspective view of another embodiment of an outdoor unit of an air conditioner according to the present application;
fig. 15 is a schematic cross-sectional view illustrating an air conditioner outdoor unit according to another embodiment of the present application;
fig. 16 is a schematic perspective view illustrating a heat exchanger in another embodiment of an outdoor unit of an air conditioner according to the present application;
fig. 17 is a schematic bottom view of a heat exchanger in another embodiment of an outdoor unit of the present application;
fig. 18 is a schematic cross-sectional view illustrating an air conditioner outdoor unit according to another embodiment of the present application;
fig. 19 is a schematic view showing a partial perspective view of another embodiment of an outdoor unit of an air conditioner according to the present application;
fig. 20 is a schematic view showing a partially cut-away structure of an outdoor unit of an air conditioner according to another embodiment of the present application;
fig. 21 is a schematic cross-sectional view illustrating an outdoor unit of an air conditioner according to another embodiment of the present application;
fig. 22 is a schematic view illustrating a partial perspective view of another embodiment of an outdoor unit of an air conditioner according to the present application;
fig. 23 is a schematic view showing a partially cut-away structure of another embodiment of an outdoor unit of an air conditioner according to the present application;
fig. 24 is a schematic view showing a partial perspective structure of another embodiment of an outdoor unit of the present application;
fig. 25 is a schematic view illustrating a front view of another embodiment of an outdoor unit of an air conditioner according to the present application;
fig. 26 is a schematic view showing a partially cut-away structure of another embodiment of an outdoor unit of an air conditioner according to the present application;
fig. 27 is a schematic view showing a partial top view of another embodiment of an outdoor unit of the present application;
fig. 28 is a schematic view illustrating a partial perspective structure of another embodiment of an outdoor unit of an air conditioner according to the present application;
fig. 29 is a schematic view showing a front view of a portion of an outdoor unit of an air conditioner according to another embodiment of the present application;
fig. 30 is a schematic view illustrating a partially cut-away structure of another embodiment of an outdoor unit of an air conditioner according to the present application;
fig. 31 is a schematic top view of another embodiment of an outdoor unit of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, are intended to fall within the scope of the present application.
The terms "first" and "second" in the present application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus. And the term "and/or" is merely an association relation describing the association object, and indicates that three relations may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.
Referring to fig. 1 and 2, an embodiment of an outdoor unit 10 of the present application includes at least two wind wheels and a heat exchanger 210, wherein the at least two wind wheels are disposed along an axial direction thereof at intervals, 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 at least two wind wheels, can be in the scope of predetermineeing with noise control in the improvement amount of wind, and its static pressure efficiency is higher to can promote fan efficiency, and through the distance between the opposite ends of restriction at least two wind wheels in the axial and the ratio relation of the length of heat exchanger 210 in the axial, make the amount of wind that at least two wind wheels produced can with the size cooperation of heat exchanger 210, reach better heat transfer effect, silence effect and damping effect.
In an embodiment, the ratio of the distance R1 between the opposite ends of the at least two wind wheels in the axial direction to the length of the heat exchanger 210 in the axial direction is 0.28 to 0.39, for example, 0.28, 0.33 or 0.39, so that the wind volume generated by the at least two wind wheels can be better matched with the size of the heat exchanger 210, and better heat exchange effect, silencing effect and vibration absorption 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 air inlet side area 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 air inlet side area of the heat exchanger 210 can be 2.04×10 -4 mm -1 Up to 3.63×10 -4 mm -1 For example 2.04X 10 -4 mm -1 、3.25×10 - 4 mm -1 Or 3.63×10 -4 mm -1 And the like, the air quantity of the air flow generated by at least two wind wheels and the heat exchange capacity of the heat exchanger 210 can reach a better matching relationship, and further, a better comprehensive effect is achieved between the heat exchange efficiency, the energy consumption and the noise reduction of the air conditioner outdoor unit 10. Wherein the intake side area of the heat exchanger 210 is defined as the inside surface area 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 specifically be 560mm, 610mm, 700mm, 750mm or 850mm, so that the air volume and the air speed of the air flow generated by the at least two wind wheels can be matched with the heat exchanger 210 to achieve better heat exchange effect, silencing effect and vibration absorption effect.
In one embodiment, the heat exchanger 210 has an inlet side area of 2.34×10 6 mm 2 Up to 2.75X10 6 mm 2 For example 2.34×10 6 mm 2 、2.5×10 6 mm 2 Or 2.75X10 6 mm 2 Etc., so that the heat exchanging capability of the heat exchanger 210 can be matched with at least two wind wheels, thereby achieving better heat exchanging effect and silencing effect.
In one embodiment, the outdoor unit 10 is in the form of top air, and in other embodiments, the outdoor unit may be in the form of bottom air or side air, which is not limited herein.
In an embodiment, the spacing S1 of at least two wind wheels satisfies the following relationship: s1 is more than or equal to 20mm and less than or equal to 70mm, for example, 20mm, 50mm or 70mm, and can avoid overlarge air quantity loss generated by the lower wind wheel caused by overlarge spacing of at least two wind wheels, and can also avoid interference between adjacent wind wheels caused by overlarge spacing of at least two wind wheels, thereby damaging the wind wheel structure.
Referring also to fig. 3, in an embodiment, the at least two wind wheels include a first wind wheel 110 and a second wind wheel 120, the second wind wheel 120 is disposed on a side of the first wind wheel 110 facing away from the heat exchanger 210, and an outer diameter D1 of the first wind wheel 110 and an outer diameter D2 of the second wind wheel 120 satisfy the following relationship: d2 More than or equal to 0.7d1, such as 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 larger wind quantity, and the generated noise is smaller.
When d1=d2, the outer diameter D1 of the first rotor 110, the outer diameter D2 of the second rotor 120, the length H1 of the first rotor 110 in the axial direction, and the length H2 of the second rotor 120 in the axial direction satisfy the following relationship: 1.ltoreq.H2H2H2H2.ltoreq.1.2, such as H2H2H2/H2=1, H2/H2=1.1 or H2/H2=1.2, etc., by setting 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 to be equal, the whole wind quantity can be larger, the differential pressure distribution of the first wind wheel 110 and the second wind wheel 120 is also 1:1, the transition of the air flow from the first wind wheel 110 to the second wind wheel 120 is more gentle, and the noise reduction effect is better; by setting the length H1 of the first wind wheel 110 in the axial direction smaller than the length H2 of the second wind wheel 120 in the axial direction, the pressure rising effect of the first wind wheel 110 can be reduced, so that the air flow pre-spinning effect at the lower part where the first wind wheel 110 is located is better.
In an embodiment, by adjusting 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, the ratio of the pressure rise of the first wind wheel 110 to the pressure rise of the second wind wheel 120 can be adjusted, wherein the ratio of the pressure rise distribution of the first wind wheel 110 to the pressure rise distribution of the second wind wheel 120 is 0.6 to 1, for example, 0.76 to 0.84, specifically, may be 0.6, 0.76, 0.8, 0.84 or 1, so that the air pressure influence between the first wind wheel 110 and the second wind wheel 120 is less, and the operation can be better.
When d1=d2, the spacing S1 of the first wind wheel 110 from the second wind wheel 120 satisfies the following relationship: 20mm is less than or equal to S1 is less than or equal to 40mm, for example, 26mm is less than or equal to S1 is less than or equal to 32mm, and specifically, S1=20 mm, S1=26 mm, S1=30 mm, S1=32 mm, S1=40 mm or the like can enable the first wind wheel 110 and the second wind wheel 120 to achieve a better matching relationship, and noise can be reduced while larger wind quantity is generated.
By setting the outer diameters of the first wind wheel 110 and the second wind wheel 120 to be equal, the air draft capacities of the first wind wheel 110 and the second wind wheel 120 can be identical, so that the first wind wheel and the second wind wheel can be matched with each other better, and noise can be reduced while larger air quantity is generated.
In an embodiment, the length H1 of the first wind wheel 110 in the axial direction, the length H2 of the second wind wheel 120 in the axial direction, and the spacing S1 between the first wind wheel 110 and the second wind wheel 120 satisfy the following relationship: s1< (H1+H2)/2, for example, S1 can be (H1+H2)/3, (H1+H2)/4 or (H1+H2)/5, and the like, so that a better matching relationship between the first wind wheel 110 and the second wind wheel 120 can be achieved, and noise is lower while larger wind quantity is generated under lower energy consumption.
In an embodiment, the outdoor unit 10 of the air conditioner may further include a guide cover 130, where the guide cover 130 is sleeved on the peripheries of the first wind wheel 110 and the second wind wheel 120, so as to reduce air leakage at the top of the second wind wheel 120, so as to achieve the purposes of improving air quantity and reducing noise under the same rotation speed.
In an embodiment, the air guide sleeve 130 includes a main body portion 131, a first gradual change portion 132 connected to an air inlet end of the main body portion 131, and a second gradual change portion 133 connected to an air outlet end of the main body portion 131, wherein diameters of the main body portion 131 in the axial direction are the same, a cross-sectional area of the first gradual change portion 132 in the vertical direction in the axial direction gradually increases toward the heat exchanger 210, and a cross-sectional area of the second gradual change portion 133 in the vertical direction in the axial direction gradually increases away from the heat exchanger 210, so that air 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 that the first wind wheel 110 can enter wind in a lateral direction, 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 guide cover 130.
Referring to fig. 4, in an embodiment, the distance S2 between the air inlet end of the first wind wheel 110 and the air inlet end of the main body 131, and the length H1 of the first wind wheel 110 in the axial direction satisfy the following relationship 0.4< S2/H1<0.7, for example, 0.57 < S2/H1< 0.62, and the specific S2/H1 may be 0.45, 0.5, 0.58, 0.6 or 0.65, which can make the air inlet flow guiding of the air guide cover 130 smoother, the air quantity larger and the noise smaller. The air inlet end of the main body 131, i.e., the end of the main body 131 connected to the first gradual change portion 132 (the lower end of the cylindrical section in fig. 3), and the air outlet end of the main body 131, i.e., the end of the main body 131 connected to the second gradual change portion 133 (the upper end of the cylindrical section in the figure).
Referring to fig. 5, in an embodiment, when the air outlet end of the second wind wheel 120 is defined to be 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 defined to be 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, and 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 length H2 of the second wind wheel 120 in the axial direction satisfy the following relationship: 0< |S3/H2| <0.25, for example, the|S3/H2| can be 0.1, 0.15 or 0.2, so that the air guide cover 130 can achieve better air guide effect on the air flow generated by the first wind wheel 110 and the second wind wheel 120, and the noise is smaller.
In an embodiment, the distance S3 between the end of the second wind wheel 120 facing away from the heat exchanger 210 and the end of the main body portion 131 facing away from the heat exchanger 210, and the length H3 of the second gradual change 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 better air outlet effect, and generate larger air quantity and smaller noise.
In an embodiment, the length H4 of the first gradual change portion 132 in the axial direction and the outer diameter D1 of the first wind wheel 110 satisfy the following relationship: 0.06< H4/D1<0.2, for example, H4/D1 may be 0.08, 0.1 or 0.15, so that the first wind wheel 110 can achieve a better wind inlet effect, which is beneficial to generating larger wind quantity and smaller noise.
In an embodiment, the distance R1 between two opposite ends of the first wind wheel 110 and the second wind wheel 120 in the axial direction and the length R3 of the air guide sleeve 130 in the axial direction satisfy the following relationship, wherein 0.7 < R1/R3 < 0.95, for example, R1/R3 may be 0.75, 0.8 or 0.9, etc., so that the air guide sleeve 130 has a better air guide effect on the air flow generated by the first wind wheel 110 and the second wind wheel 120, and the working efficiency of the first wind wheel 110 and the second wind wheel 120 is higher, which is beneficial to reducing noise while increasing the air quantity.
In an embodiment, the ratio of the pressure rise distribution of the first wind wheel 110 to the second wind wheel 120 is 0.6 to 1, for example, 0.76 to 0.84, specifically, may be 0.6, 0.76, 0.8, 0.84 or 1, so that the air pressure between the first wind wheel 110 and the second wind wheel 120 has less influence, and can operate better.
In an embodiment, the air conditioning 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 along opposite directions, the wind speed and the radial speed at the outlet of the driving member 140 are smaller, the air exhaust is facilitated, the air return phenomenon is not easy to occur, the pressure resistance is strong, and the problem of high pressure drop outside the air conditioning outdoor unit during the installation process of the multi-split air conditioning outdoor unit can be solved.
In other embodiments, the first wind wheel 110 and the second wind wheel 120 may be driven to rotate by two driving members, which is not limited herein.
| Prior art scheme (Single wind wheel fan) | The application (draught fan group) | |
| Fan blade diameter (mm) | 700 | 700 |
| Rotating speed (rpm) | 920 | 460 |
| Air volume (m 3/h) | 12000 | 12000 |
| Power (W) | 604 | 561 |
| Noise (dB) | 64.2 | 59.6 |
Referring to table 1, taking the diameter of the first wind wheel 110 and the second wind wheel 120 as an example, compared with a single wind wheel fan, the fan set formed by the two wind wheels in the application can reach the same air volume with smaller rotation speed and power, can reduce the hardware requirement on a driving piece, can reduce the noise value, and can improve the tone quality.
Referring to fig. 6 to 9, compared with the existing single wind wheel blower, the static pressure of the wind turbine set is larger when the same preset air quantity is achieved, the distance of air supply can be farther, the required power is smaller, and the generated noise is lower. And the noise generated is lower when the rotation frequency is the same.
Referring to fig. 10 and 11 together, in an embodiment, the heat exchanger 210 is a U-shaped heat exchanger, and 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, and the outer diameter D1 of the first wind wheel 110, the length L1 of the first air inlet surface 211 in the axial vertical direction and the extending direction of the first air inlet surface 211, the length L2 of the second air inlet surface 212 in the axial vertical direction and the extending direction of the second air inlet surface 212, and the length L3 of the third air inlet surface 213 in the axial vertical direction and the extending direction of the third air inlet surface 213 satisfy the following relationships: 0.85D1< L1< L2<1.5D1,0.85D1< L3< L2<1.5D1 for each air inlet surface of the heat exchanger 210 can reach better air inlet effect, thereby improving heat exchange efficiency, and then can cooperate with the first wind wheel 110 and the second wind wheel 120 to reach better noise reduction effect.
In an embodiment, the heat exchanger 210 includes a plurality of fins 214 disposed at intervals and a plurality of rows of heat exchange tubes 215 disposed throughout the plurality of fins 214, wherein an arc-shaped louver (not shown in the figure) may be formed on the plurality of fins 214, and the number of rows of the heat exchange tubes 210 may be 2 to 3, for example 2 rows, 2.5 rows (one side is 2 rows, and the other side is 3 rows), or 3 rows, and the tube diameter of the heat exchange tubes 215 may be 5mm to 9.5mm, for example 6.2mm to 7.3mm, and may specifically be 5mm, 6mm, 6.2mm, 7.3mm, or 9.5mm, and the distance between two adjacent fins in the plurality of fins 214 may be 1.3mm to 1.6mm, for example 1.34mm to 1.48mm, specifically may be 1.3mm, 1.34mm, 1.4mm, 1.48mm, or 1.6mm, so that the heat exchanger 210 may achieve a better heat exchange effect, and may 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 tube diameters of the multiple rows of heat exchange tubes 215 are in inverse relation with the outer diameters of the at least two wind wheels, and the larger the tube diameter of the heat exchange tube 215 is, the larger the heat exchange area of the heat exchanger 210 (the heat exchange area is defined as the area of the outer surfaces of the heat exchange tube 215 and the fins 214 of the heat exchanger 210) is, so that the tube diameter of the heat exchange tube 215 and the outer diameters of the at least two wind wheels are set in inverse relation, so that balance between the heat exchange area and the wind quantity can be achieved, and certain heat exchange efficiency is maintained.
In an embodiment, the number of rows of the heat exchange tubes 215 is in an inverse relationship with the outer diameters of the at least two wind wheels, and the heat exchange area of the heat exchanger 210 is larger as the number of rows of the heat exchange tubes 215 is larger, so that the number of rows of the heat exchange tubes 215 is in an inverse relationship with the outer diameters of the at least two wind wheels, so that the heat exchange area and the wind quantity can be balanced, and a certain heat exchange efficiency can be maintained.
In an embodiment, the distance between two adjacent fins in the plurality of fins 214 is in an inverse relationship with the outer diameters of at least two wind wheels, and the heat exchange of the fins 214 is faster as the distance between two adjacent fins in the plurality of fins 214 is larger, so that the distance between two adjacent fins in the plurality of fins 214 and the outer diameters of at least two wind wheels are in an inverse relationship, so that the balance between the heat exchange speed and the wind volume can be achieved, and a certain heat exchange efficiency is maintained.
Referring to fig. 12 and 13, in another embodiment, the heat exchanger 220 may also be a G-type heat exchanger, where the heat exchanger 220 is formed with four air inlet surfaces, and the area of the air inlet surface is larger, so that the heat exchange effect is better.
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, without limitation.
Referring to fig. 14 to 17, another embodiment of an outdoor unit 10 of the present application includes two sets of fan units 100, a heat exchanger 230 and a housing 320, where the two sets of fan units 100 and the heat exchanger 230 are respectively disposed in the housing 320, each set of fan units 100 includes a first wind wheel 110, a second wind wheel 120, a guide cover 130 and a driving member 140, and the housing 320 is formed with air outlets 321 and 322, wherein the structures of the first wind wheel 110, the second wind wheel 120, the guide cover 130 and the driving member 140 are referred to the above embodiments and are not repeated herein. By arranging two sets of fan devices 100 on the air conditioner outdoor unit 10, the air quantity and the air pressure of the air conditioner outdoor unit can be further increased, the fan efficiency is improved, and the low-frequency sound quality of the fan device 100 formed by two wind wheels is better than that of the fan device 100 formed by the existing single wind wheel, so that the low-frequency beat vibration noise generated by the fan blade coupling 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 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 air inlet side area 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 at least two wind wheels to the air inlet side area of the heat exchanger 210 may be 1.18x10 -4 mm -1 Up to 2.04×10 -4 mm -1 For example 1.18×10 -4 mm -1 、1.76×10 -4 mm -1 Or 2.04×10 - 4 mm -1 And the like, so that the air quantity of the air flow generated by at least two wind wheels and the heat exchange capacity of the heat exchanger 230 can reach a better matching relationship, the heat exchange efficiency is improved, and the noise and the energy consumption are reduced.
In one embodiment, the heat exchanger 230 has an inlet side area of 2.75X10 6 mm 2 To 4.76X10 6 mm 2 For example 2.75X10 6 mm 2 、3×10 6 mm 2 Or 4.76X10 6 mm 2 Etc. so that the heat exchanging capacity of the heat exchanger 230 can be matched with the first wind wheel 11And 0 is matched with the second wind wheel 120, so that better heat exchange effect and 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, and specifically may be 1.5 times, 1.74 times, 1.8 times, 1.87 times, or 2 times that of the heat exchanger 210 or 220 in the above embodiment.
In an embodiment, the sizes of the two sets of fan apparatuses 100 may be the same or different, for example, the sizes of the fan apparatuses 100 corresponding to the three air inlet surfaces of the heat exchanger 230 on the right side as shown in fig. 17 may be larger than the sizes of the fan apparatuses 100 corresponding to the two air inlet surfaces of the heat exchanger 230 on the left side, so that the air suction capacity of the fan apparatuses 100 is matched with the heat exchange capacity of the corresponding part of the heat exchanger 230, thereby improving the heat exchange efficiency, and reducing noise and energy consumption.
In one embodiment, the two fan units 100 are arranged on the same layer, and can be matched with the heat exchanger 230 with larger air inlet side area. In other embodiments, the two fan units 100 may be coaxially disposed, so as to further increase the wind pressure, and the fan unit is suitable for special occasions with high static pressure requirements.
Referring to fig. 18 to 20, another embodiment of an air conditioner outdoor unit 10 according to the present application 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 axially spaced apart from each other, and the structure of the first wind wheel 110 and the second wind wheel 120 is described in the above embodiment of the air conditioner outdoor unit 10, which is not repeated herein.
In an embodiment, the length H5 of the guide 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 (H1+H2). Ltoreq.H5.ltoreq.0.75 (H1+H2), for example, 0.48 (H1+H2). Ltoreq.H5.ltoreq.0.62 (H1+H2), and 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 better flow guiding effect, and further achieve better heat exchanging effect, silencing effect and vibration absorbing effect.
In an embodiment, the guide vane 150 is disposed on a side of the first wind wheel 110 facing away from the second wind wheel 120, so as to provide a pre-rotation effect, rectify a complex airflow, reduce energy loss of the airflow, and improve air volume.
In an embodiment, the distance S4 between the guide vane 150 and 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). Ltoreq.S4.ltoreq.0.25 (H1+H2), for example, 0.11 (H1+H2). Ltoreq.S4.ltoreq.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) can avoid the poor flow guiding effect caused by the too far distance between the guide vane 150 and the first wind wheel 110, or the too near distance between the guide vane 150 and the first wind wheel 110 generates interference, and the structure of the guide vane 150 or the first wind wheel 110 is destroyed.
Referring to fig. 21 to 23, in another specific embodiment, the guide vane 160 may also be disposed on a side of the second wind wheel 120 facing away from the first wind wheel 110, where the second wind wheel 120 rotates in a direction opposite to the first wind wheel 110, so that a rotational velocity component of an airflow at an air outlet end of the first wind wheel 110 along a circumferential direction can be recovered, and by disposing the guide vane 160, a rotational velocity component of an airflow at an air outlet end of the second wind wheel 120 along a circumferential direction can be further recovered, so that the airflow can flow out along an axial direction, thereby achieving a function of recovering dynamic pressure and improving static pressure, and further improving an overall air volume and fan efficiency.
In an embodiment, the distance S5 between the guide vane 160 and 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). Ltoreq.S5.ltoreq.0.25 (H1+H2), for example, 0.11 (H1+H2). Ltoreq.S5.ltoreq.0.19 (H1+H2), 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), the guide vane 150 and the second wind wheel 120 can be prevented from being too far to cause poor flow guiding effect, or the guide vane 150 and the second wind wheel 120 are prevented from being too close to generate interference to damage the structure of the guide vane 150 or the second wind wheel 120.
Referring to fig. 24 to 27, another embodiment of the air conditioning outdoor unit 10 of the present application includes a first wind wheel 110, a second wind wheel 120, and a guide cover 170, wherein the structures of the first wind wheel 110 and the second wind wheel 120 are described in the above embodiment of the air conditioning outdoor unit 10, and are not repeated herein.
In an embodiment, the air guide sleeve 170 is cylindrically disposed, and the outer diameter D1 of the first wind wheel 110, the outer diameter D2 of the second wind wheel 120, 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 relationships: 1.01.ltoreq.D1/D2.ltoreq. 1.03,1.ltoreq.H2/H21.ltoreq.1.15, for example D1/D2=1.01, D1/D2=1.02 or D1/D2=1.03, etc., H2/H2=1, H2/H2=1.1 or H2/H2=1.15, etc., since the blade tip of the wind wheel is the main source of noise, and the blade tip outer side of the second wind wheel 120 generates vortex, 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 at the outer periphery of the first wind wheel 110, thereby achieving better noise reduction effect, and can be matched with the heat exchanger 210 to achieve better heat exchange effect.
Referring to fig. 28 to 31, another embodiment of the air conditioner outdoor unit 10 according to the present application includes a first wind wheel 110, a second wind wheel 120, and a guide cover 180, wherein the structures of the first wind wheel 110 and the second wind wheel 120 are described in the above embodiment of the air conditioner outdoor unit 10, and are not repeated herein.
In an embodiment, the cross section of the top of the air guide sleeve 180 along the axial vertical direction is elliptical, so that at least part of dynamic pressure of the 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 the energy consumption and noise.
In an embodiment, the outer diameter D1 of the first wind wheel 110 and the long axis D3 of the pod 180 satisfy the following relationship: 1.04 is less than or equal to D3/D1 is less than or equal to 1.1, for example, D3/D1=1.04, D3/D1=1.08, D3/D1=1.1, and the like, so that the air flow generated by the first wind wheel 110 and the second wind wheel 120 can be better guided by the air guide cover 180, and further, better heat exchange effect, silencing effect and vibration damping effect are achieved.
In an embodiment, the outer diameter D1 of the first wind wheel 110 and the long axis D3 of the pod 180 satisfy the following relationship: 1.06 is less than or equal to D3/D1 is less than or equal to 1.08, for example, D3/D1=1.06, D3/D1=1.07, D3/D1=1.08, and the like, so that the air guide cover 180 can further realize better flow guide effect on the air flow generated by the first wind wheel 110 and the second wind wheel 120, and further achieve better heat exchange effect, silencing effect and vibration damping effect.
In one embodiment, the outer diameter D1 of the first wind wheel 110 and the short axis D4 of the pod 180 satisfy the following relationship: 1.02.ltoreq.D4/D1.ltoreq.1.05, for example D4/D1=1.02, D4/D1=1.03 or D4/D1=1.05, etc., so that the air guide cover 180 can better guide the air flow generated by the first wind wheel 110 and the second wind wheel 120, thereby achieving better heat exchange effect, silencing effect and vibration damping effect.
In an embodiment, the outer diameters D1, D2 of the first and second wind wheels 110, 120 satisfy the following relationship: d2 More than or equal to 0.7d1, such as 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 larger wind quantity, and the generated noise is smaller.
In one embodiment, the outer diameter D1 of the first rotor 110 satisfies the following relationship: 560mm is less than or equal to D1 is less than or equal to 850mm, for example 630mm is less than or equal to D1 is less than or equal to 710mm, and can be 560mm, 630mm, 700mm, 710mm or 850mm specifically, so that the air quantity and the air speed of the air flow generated by the first wind wheel 110 can achieve better effects, and better heat exchange effect, silencing effect and vibration absorption effect are achieved.
In an embodiment, the outer diameter D1 of the first wind wheel 110, the hub diameter D11 of the first wind wheel 110 satisfy the following relationship: 2.ltoreq.d1/d11.ltoreq.4.5, e.g. 3.3.ltoreq.d1/d11.ltoreq.4.1, specific 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 an embodiment, the outer diameter D2 of the second wind wheel 120, the hub diameter D21 of the second wind wheel 120 satisfy the following relationship: 2.ltoreq.d2/d21.ltoreq.4.5, e.g. 3.4.ltoreq.d2/d21.ltoreq.4.2, specific 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 wheel 110 in the axial direction, the length H2 of the second wind wheel 120 in the axial direction, and the spacing S1 between the first wind wheel 110 and the second wind wheel 120 satisfy the following relationship: s1< (H1+H2)/2, for example, S1 can be (H1+H2)/3, (H1+H2)/4 or (H1+H2)/5, and the like, so that a better matching relationship between the first wind wheel 110 and the second wind wheel 120 can be achieved, and noise can be reduced while larger wind quantity is generated.
In an embodiment, the ratio of the pressure rise distribution of the first wind wheel 110 to the second wind wheel 120 is 0.6 to 1, for example, 0.76 to 0.84, specifically, may be 0.6, 0.76, 0.8, 0.84 or 1, so that the air pressure between the first wind wheel 110 and the second wind wheel 120 has less influence, and can operate better.
The foregoing description is only of embodiments of the present application, and is not intended to limit the scope of the application, and all equivalent structures or equivalent processes using the descriptions and the drawings of the present application or directly or indirectly applied to other related technical fields are included in the scope of the present application.
Claims (10)
1. A fan apparatus, the fan apparatus comprising:
the first wind wheel and the second wind wheel are axially arranged at intervals;
the air guide sleeve is sleeved on the peripheries of the first wind wheel and the second wind wheel, the air guide sleeve comprises a main body part, a part of the first wind wheel is arranged in the main body part and is close to an air inlet end of the main body part, and at least a part of the second wind wheel is arranged in the main body part and is close to an 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 relation: 0.4< S2/H1<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 relation: 0< S3/H2<0.25.
2. The fan apparatus as claimed in claim 1, wherein the diameters of the main body parts in the axial direction are the same, the guide cover further comprises a first gradual change part connected to an air inlet end of the main body part and a second gradual change part connected to an air outlet end of the main body part, a distance S3 between the air outlet end of the second wind wheel and the air outlet end of the main body part, and a length H3 of the second gradual change part in the axial direction satisfy the following relationship: s3< H3.
3. The fan apparatus according to claim 2, wherein a length H4 of the first gradually changing portion in the axial direction and an outer diameter D1 of the first wind wheel satisfy the following relationship: 0.06< H4/D1<0.2.
4. The fan apparatus according to claim 1, wherein an outer diameter D1 of the first wind wheel, an outer diameter D2 of 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: d1 =d2, 1.ltoreq.h2/h1.ltoreq.1.2.
5. The fan apparatus according to claim 1, wherein an outer diameter D1 of the first wind wheel, an outer diameter D2 of the second wind wheel, and a space S1 between the first wind wheel and the second wind wheel satisfy the following relationship: d1 =d2, 20 mm.ltoreq.s1.ltoreq.40 mm.
6. The fan apparatus according to claim 1, wherein an outer diameter D1 of the first wind wheel, an outer diameter D2 of 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: D1/D2 is more than or equal to 1.01 and less than or equal to 1.03,1, and H2/H1 is more than or equal to 1.15.
7. The fan apparatus of claim 1, wherein the ratio of the pressure rise distribution of the first wind wheel to the second wind wheel is from 0.6 to 1.
8. The fan apparatus as claimed in claim 1, further comprising guide vanes axially spaced apart from the first wind wheel and the second wind wheel, respectively, a length H5 of the guide vanes 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 H1+H2 H5 is more than or equal to 0.75 (H1+H2).
9. The fan device according to claim 8, wherein the guide vane is disposed on a side of the first wind wheel facing away from the second wind wheel, 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 (H1+H2) S4 is more than or equal to 0.25 (H1+H2); or (b)
The guide vane is arranged on one side of the second wind wheel, which is away from the first wind wheel, the distance S5 between the guide vane and the second wind wheel in the axial direction, 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 meet the following relation: 0.05 (H1+H2) S5 is more than or equal to 0.25 (H1+H2).
10. An air conditioning outdoor unit comprising a heat exchanger and a fan apparatus as claimed in any one of claims 2 to 9 for directing an air flow through the heat exchanger.
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| CN202011079913.9A CN114320977B (en) | 2020-10-10 | 2020-10-10 | Fan device and air conditioner outdoor unit |
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| CN202011079913.9A CN114320977B (en) | 2020-10-10 | 2020-10-10 | Fan device and air conditioner outdoor unit |
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| 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 |
| CN211474519U (en) * | 2019-11-29 | 2020-09-11 | 广东美的制冷设备有限公司 | Axial flow fan wheel subassembly and air conditioner |
| CN213808156U (en) * | 2020-10-10 | 2021-07-27 | 广东美的暖通设备有限公司 | Fan device and air condensing units |
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2020
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN211474519U (en) * | 2019-11-29 | 2020-09-11 | 广东美的制冷设备有限公司 | Axial flow fan wheel subassembly and air conditioner |
| CN213808156U (en) * | 2020-10-10 | 2021-07-27 | 广东美的暖通设备有限公司 | Fan device and air condensing units |
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