CN114322112A - Outdoor unit of air conditioner - Google Patents
Outdoor unit of air conditioner Download PDFInfo
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- CN114322112A CN114322112A CN202011079905.4A CN202011079905A CN114322112A CN 114322112 A CN114322112 A CN 114322112A CN 202011079905 A CN202011079905 A CN 202011079905A CN 114322112 A CN114322112 A CN 114322112A
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- 230000001743 silencing effect Effects 0.000 description 2
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- 230000007774 longterm Effects 0.000 description 1
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Abstract
The invention discloses an air conditioner outdoor unit which comprises at least two wind wheels and a heat exchanger, wherein the at least two wind wheels are axially arranged at intervals, the heat exchanger is arranged opposite to the at least two wind wheels, and the ratio of the area of a circle with the outer diameter of the at least two wind wheels to the area of the air inlet side of the heat exchanger is 0.052-0.242, so that the air volume of air flow generated by the at least two wind wheels and the heat exchange capacity of the heat exchanger can be better matched, and the heat exchange efficiency, the energy consumption and the noise reduction of the air conditioner outdoor unit can be better combined.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to 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 this application discovers in long-term research and development, and air condensing units generally adopts the fan system of single wind wheel at present, and the air-out air current has the rotation speed weight component of very big partly along circumference, and static pressure efficiency is lower, and it can produce bigger noise when improving the amount of wind, and both can't reach better balanced relation to single wind wheel fan can't reach better cooperation effect with the heat exchanger.
Disclosure of Invention
The invention provides an air conditioner outdoor unit, which aims to solve the technical problems that in the prior art, the air volume and the noise of a single wind wheel fan system of the air conditioner outdoor unit cannot be balanced, and the matching effect with a heat exchanger is poor.
In order to solve the above technical problem, one technical solution adopted by the present invention is to provide an outdoor unit of an air conditioner, including:
the wind turbine comprises a fan device and a control device, wherein the fan device comprises at least two wind wheels which are arranged at intervals along the axial direction of the wind wheels;
the heat exchanger is arranged opposite to the at least two wind wheels;
and the ratio of the area of a 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 is 0.052-0.242.
In a specific embodiment, the outer diameters of the at least two wind wheels are 560mm to 850mm, and the area of the air inlet side of the heat exchanger is 2.34 mm multiplied by 106mm2 to 4.76 mm multiplied by 106mm 2.
In a specific embodiment, the number of the fan devices is one or two, and the air inlet side area of the heat exchanger corresponding to two fan devices is 1.5 times to 2 times of the air inlet side area of the heat exchanger corresponding to one fan device.
In a specific embodiment, the at least two wind wheels include a first wind wheel and a second wind wheel, the second wind wheel is disposed on a side of the first wind wheel facing away from the heat exchanger, and an outer diameter D1 of the first wind wheel and an outer diameter D2 of the second wind wheel satisfy the following relationship: d2 is more than or equal to 0.7D 1.
In a specific embodiment, the heat exchanger is formed with a first air inlet surface, a second air inlet surface and a third air inlet surface, the outer diameter D1 of the first wind wheel, the length L1 of the first air inlet surface in the axial direction perpendicular direction and the extending direction of the first air inlet surface, the length L2 of the second air inlet surface in the axial direction perpendicular direction and the extending direction of the second air inlet surface, and the length L3 of the third air inlet surface in the axial direction perpendicular direction and the extending direction of the third air inlet surface satisfy the following relations: 0.85D1< L1< L2<1.5D1, 0.85D1< L3< L2<1.5D 1.
In a specific embodiment, the ratio of the distance between the two opposite ends of the at least two wind wheels in the axial direction to the length of the heat exchanger in the axial direction is 0.1 to 0.4.
In a specific embodiment, the heat exchanger includes a plurality of fins that the interval set up and runs through the multirow heat exchange tube that a plurality of fins set up, be formed with arc shutter on a plurality of fins, the row number of heat exchange tube is 2 rows to 3 rows, the pipe diameter of heat exchange tube is 5mm to 8mm, the interval of two adjacent fins in a plurality of fins is 1.3mm to 1.5 mm.
In a specific embodiment, the tube diameters of the multiple rows of heat exchange tubes are in a reverse relationship with the outer diameters of the at least two wind wheels.
In a specific embodiment, the number of rows of the heat exchange tubes is in a reverse relationship with the outer diameters of the at least two wind wheels.
In a particular embodiment, the spacing between adjacent ones of the plurality of fins is in an inverse relationship to the outer diameter of the at least two rotors.
The air conditioner outdoor unit comprises at least two wind wheels and a heat exchanger, wherein the at least two wind wheels are axially arranged at intervals, the heat exchanger is arranged opposite to the at least two wind wheels, and the ratio of the area of a circle with the outer diameter of the at least two wind wheels to the area of the air inlet side of the heat exchanger is 0.052-0.242, so that the air volume of air flow generated by the at least two wind wheels can be better matched with the heat exchange capacity of the heat exchanger, and further, the heat exchange efficiency of the air conditioner outdoor unit, energy consumption and noise reduction can be better combined.
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 of 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 partial perspective view of 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 schematic partial sectional view 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 of 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" and "second" in this 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, "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 listed, but may alternatively include other steps or elements not 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, such as 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 length of the heat exchanger 210 in the axial direction 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 × 10-4mm-1To 3.63X 10-4mm-1For example 2.04×10-4mm-1、3.25×10- 4mm-1Or 3.63X 10-4mm-1And the air volume of the air flow generated by the at least two wind wheels and the heat exchange capacity of the heat exchanger 210 can be better matched, so that the heat exchange efficiency of the air conditioner outdoor unit 10, the energy consumption and the noise reduction can be 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 specifically, 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 cooperate with the heat exchanger 210 to achieve a better heat exchange effect, a silencing effect, and a vibration elimination effect.
In one embodiment, the heat exchanger 210 has an air intake side area of 2.34 × 106mm2To 2.75X 106mm2E.g. 2.34 x 106mm2、2.5×106mm2Or 2.75X 106mm2And 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 one embodiment, the spacing S1 of the at least two rotors 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, 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 are interfered 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 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 is more than or equal to 0.7D1, for example, D2 is equal to 0.7D1, D2 is equal to D1, or D2 is equal to 1.2D1, so that the first wind wheel 110 and the second wind wheel 120 can generate large air volume in a matching mode, and the generated noise is small.
When D1 is D2, 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 relationship: H2/H1 is not more than 1.2, for example, H2/H1 is 1, H2/H1 is 1.1, or H2/H1 is 1.2, the overall air volume can be made larger 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, and the pressure difference distribution of the first wind wheel 110 and the second wind wheel 120 is also 1:1, so that the transition of the air flow from the first wind wheel 110 to the second wind wheel 120 is 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 reduced, 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 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 is D2, the distance S1 between the first wind wheel 110 and the second wind wheel 120 satisfies the following relationship: s1 is 20mm ≦ 40mm, for example S1 is ≦ 32mm, specifically, S1 ≦ 20mm, S1 ≦ 26mm, S1 ≦ 30mm, S1 ≦ 32mm, or S1 ≦ 40mm, 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 a large air volume is generated.
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 better matched with each other, and noise can be reduced while large air volume is generated.
In one 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 spacing S1 of the first wind rotor 110 from the second wind rotor 120 satisfy the following relationships: s1< (H1+ H2)/2, for example, S1 can be (H1+ H2)/3, (H1+ H2)/4 or (H1+ H2)/5, and the like, so that the first wind wheel 110 and the second wind wheel 120 can achieve a better matching relationship, and noise is lower while large air volume is generated under the condition of 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, and achieve 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 specifically, S2/H1 may be 0.45, 0.5, 0.58, 0.6, or 0.65, so that the air inlet and the air guide of the air guide cover 130 are 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, 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 axial length H2 of the second wind wheel 120 satisfy the following relationships: 0 < | S3/H2| < 0.25, for example | S3/H2| may be 0.1, 0.15, 0.2, etc., so that the nacelle 130 can achieve better guiding effect on the airflow generated by the first and second wind turbines 110 and 120 with 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 gradually-changing 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 can be 0.08, 0.1 or 0.15, so that the first wind wheel 110 can achieve better wind inlet effect, and is beneficial to generating larger wind volume and smaller noise.
In an embodiment, the distance R1 between the 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 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, etc., 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 higher working efficiency, which is beneficial to reducing noise while increasing the 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.
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, compared with a single wind wheel 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 (m3/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 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 a length L3 of the third air inlet surface 213 in the vertical direction of the axial direction satisfy the following relationships: 0.85D1< L1< L2<1.5D1, 0.85D1< L3< L2<1.5D1, so that each air inlet surface of the heat exchanger 210 can achieve a good air inlet effect, the 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 among the plurality of fins 214 and the outer diameter of at least two wind wheels are in a reverse relationship, and the larger the distance between two adjacent fins among the plurality of fins 214 is, the faster the heat exchange of the fins 214 is, so that the distance between two adjacent fins among the plurality of fins 214 and the outer diameter of at least two wind wheels are set to be in a reverse relationship, thereby balancing the heat exchange speed and the air volume, and maintaining a certain heat exchange efficiency.
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, where 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, and the casing 320 forms air outlets 321 and 322, where 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 × 10-4mm-1To 2.04X 10-4mm-1E.g. 1.18X 10-4mm-1、1.76×10-4mm-1Or 2.04X 10- 4mm-1And 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 × 106mm2To 4.76X 106mm2For example 2.75X 106mm2、3×106mm2Or 4.76X 106mm2Etc., so that the heat exchange capacity of the heat exchanger 230 can be matched with the first and second wind turbines 110 and 120,and a better heat exchange effect and a mute 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 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 refer to the above embodiment of the outdoor unit 10, which is not described herein again.
In an embodiment, the length H5 in the axial direction of the vane 150, the length H1 in the axial direction of the first wind wheel 110, and the length H2 in the axial direction of the second wind wheel 120 satisfy the following relationship: 0.25(H1+ H2) ≦ H5 ≦ 0.75(H1+ H2), for example, 0.48(H1+ H2) ≦ H5 ≦ 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 a better heat exchanging effect, a muting effect, and a vibration canceling 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 spacing S4 in the axial direction of the vane 150 from the first wind rotor 110, the length H1 in the axial direction of the first wind rotor 110, and the length H2 in the axial direction of the second wind rotor 120 satisfy the following relationships: 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 due to too far distance between the vane 150 and the first wind turbine 110, or interference due to too close distance between the vane 150 and the first wind turbine 110, and damage the structure of the vane 150 or the first wind turbine 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 spacing S5 in the axial direction between the vane 160 and the second wind rotor 120, the length H1 in the axial direction of the first wind rotor 110, and the length H2 in the axial direction of the second wind rotor 120 satisfy the following relationships: 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 vane 150 and the second wind turbine 120, or interference due to too close distance between the vane 150 and the second wind turbine 120, and damage the structure of the vane 150 or the second wind turbine 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 disposed, 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 relationships: 1.01 ≦ D1/D2 ≦ 1.03, 1 ≦ H2/H1 ≦ 1.15, for example, D1/D2 ≦ 1.01, D1/D2 ≦ 1.02, or 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 the vortex is generated outside the blade tip of the second wind wheel 120, by setting the outer diameter of the first wind wheel 110 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 the 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 in cooperation 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 rotor 110 and the long axis D3 of the nacelle 180 satisfy the following relationship: D3/D1 is not less than 1.04 and not more than 1.1, for example, D3/D1 is 1.04, D3/D1 is 1.08, or D3/D1 is 1.1, so that the air guide sleeve 180 can better guide the air flow generated by the first wind wheel 110 and the second wind wheel 120, and further achieve better heat exchange effect, mute effect and vibration damping effect.
In one embodiment, the outer diameter D1 of the first wind rotor 110 and the long axis D3 of the nacelle 180 satisfy the following relationship: D3/D1 is not less than 1.06, for example, D3/D1 is 1.06, D3/D1 is 1.07, or D3/D1 is 1.08, 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 rotor 110, 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 is 1.02, D4/D1 is 1.03, or D4/D1 is 1.05, so that the air guide sleeve 180 can better guide the air flow generated by the first wind wheel 110 and the second wind wheel 120, and further, a good heat exchange effect, a good mute effect and a good vibration elimination effect are achieved.
In one embodiment, the outer diameters D1, D2 of the first and second wind wheels 110, 120 satisfy the following relationship: d2 is more than or equal to 0.7D1, for example, D2 is equal to 0.7D1, D2 is equal to D1, or D2 is equal to 1.2D1, so that the first wind wheel 110 and the second wind wheel 120 can generate large air volume in a matching mode, and the generated noise is small.
In one embodiment, the outer diameter D1 of the first wind rotor 110 satisfies the following relationship: the wind speed is 560mm or more and is not less than D1 or more and not more than 850mm, for example, the wind speed is 630mm or more and is not more than D1 or not more than 710mm, and specifically, the wind speed can be 560mm, 630mm, 700mm, 710mm or 850mm, so that the air volume and the wind 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 one embodiment, the outer diameter D1 of the first wind rotor 110, the hub diameter D11 of the first wind rotor 110 satisfy the following relationship: 2 ≦ D1/D11 ≦ 4.5, for example, 3.3 ≦ D1/D11 ≦ 4.1, and 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, and 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 spacing 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, and the like, 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 large air volume is generated.
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 (10)
1. An outdoor unit of an air conditioner, comprising:
the wind turbine comprises a fan device and a control device, wherein the fan device comprises at least two wind wheels which are arranged at intervals along the axial direction of the wind wheels;
the heat exchanger is arranged opposite to the at least two wind wheels;
and the ratio of the area of a 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 is 0.052-0.242.
2. The outdoor unit of claim 1, wherein the at least two wind wheels each have an outer diameter of 560mm to 850mm, and the heat exchanger has an air intake side area of 2.34 x 106mm2To 4.76X 106mm2。
3. The outdoor unit of claim 1, wherein the number of the fan units is one or two, and the area of the air inlet side of the heat exchanger corresponding to two fan units is 1.5 to 2 times that of the heat exchanger corresponding to one fan unit.
4. The outdoor unit of claim 1, wherein the at least two wind wheels comprise a first wind wheel and a second wind wheel, the second wind wheel is disposed on a side of the first wind wheel facing away from the heat exchanger, and an outer diameter D1 of the first wind wheel and an outer diameter D2 of the second wind wheel satisfy the following relationship: d2 is more than or equal to 0.7D 1.
5. The outdoor unit of claim 4, wherein the heat exchanger is formed with a first air intake surface, a second air intake surface, and a third air intake surface, and an outer diameter D1 of the first wind wheel, a length L1 of the first air intake surface in the axial direction perpendicular direction and the extending direction of the first air intake surface, a length L2 of the second air intake surface in the axial direction perpendicular direction and the extending direction of the second air intake surface, and a length L3 of the third air intake surface in the axial direction perpendicular direction and the extending direction of the third air intake surface satisfy the following relationships: 0.85D1< L1< L2<1.5D1, 0.85D1< L3< L2<1.5D 1.
6. The outdoor unit of claim 1, wherein a ratio of a distance between opposite ends of the at least two wind wheels in the axial direction to a length of the heat exchanger in the axial direction is 0.1 to 0.4.
7. The outdoor unit of claim 1, wherein the heat exchanger comprises a plurality of fins arranged at intervals and a plurality of rows of heat exchange tubes arranged through the plurality of fins, the plurality of fins are formed with arc-shaped louvers, the number of rows of the heat exchange tubes is 2 to 3, the diameter of the heat exchange tubes is 5mm to 8mm, and the distance between two adjacent fins among the plurality of fins is 1.3mm to 1.5 mm.
8. The outdoor unit of claim 7, wherein the heat exchange tubes of the plurality of rows have tube diameters in an inverse relationship with the outer diameters of the at least two wind wheels.
9. The outdoor unit of claim 7, wherein the number of rows of the plurality of rows of heat exchange tubes is in an inverse relationship with the outer diameters of the at least two wind wheels.
10. The outdoor unit of claim 7, wherein a pitch of adjacent two of the plurality of fins is in an inverse relationship with an outer diameter of the at least two wind wheels.
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| CN114322112B (en) | 2023-12-29 |
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