CN214660955U - Fan assembly and air conditioner with same - Google Patents
Fan assembly and air conditioner with same Download PDFInfo
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- CN214660955U CN214660955U CN202023233135.2U CN202023233135U CN214660955U CN 214660955 U CN214660955 U CN 214660955U CN 202023233135 U CN202023233135 U CN 202023233135U CN 214660955 U CN214660955 U CN 214660955U
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Abstract
The utility model provides a fan subassembly and have its air conditioner, the fan subassembly includes: the double-suction centrifugal fan blade is provided with an air inlet space positioned on the radial inner side, and the axial flow fan blade is arranged in the air inlet space of the double-suction centrifugal fan blade; the fan also comprises a motor, the motor is connected with the double-suction centrifugal fan blades to drive the double-suction centrifugal fan blades to rotate, meanwhile, the motor is also connected with the axial flow fan blades to drive the axial flow fan blades to rotate, and the double-suction centrifugal fan blades and the axial flow fan blades are driven by the same motor to rotate at the same rotating speed. According to the utility model discloses can reduce energy loss and great noise that the big attack angle that multi-wing centrifugal fan impeller imported caused, improve the homogeneity of flow at impeller circumference distribution simultaneously to can play the pressure boost effect, both have the characteristics that the axial fan amount of wind is big and also have the characteristics that the centrifugal fan pressure head is high.
Description
Technical Field
The utility model relates to an air conditioner technical field, concretely relates to fan subassembly and have its air conditioner.
Background
The existing common fans of the air conditioner comprise a centrifugal fan, an axial flow fan and a cross flow fan, an internal air supply system is generally a single fan blade air supply system, when the fan blade is driven by a single centrifugal fan blade, the pressure around the fan blade is lower, the middle pressure is higher, air is gathered from the periphery to the middle, and the axial flow of the air flow in the middle is weaker. When the fan is driven by a single axial flow fan blade, only the axial air inlet and outlet characteristics can be realized. And the cross-flow fan blade adopts a radial air supply mode. The air supply system with the single fan blade has lower air supply efficiency due to the limitation of the number of the fan blades, the size of the impeller and other conditions.
When the centrifugal fan rotates, the airflow strength near the front disk of the fan blade is insufficient, the airflow at the rear disk of the fan blade is strong, and the pressure difference is easily formed due to the strong airflow at the rear disk and the weak airflow at the front disk, so that the phenomenon of air flow suck back is caused. And the pressure all around is lower, and the intermediate pressure is higher, makes the air draw close to the centre from all around, leads to middle part air current axial flow to be less, can reduce the air supply efficiency lower. The large attack angle of the inlet of the impeller of the multi-wing centrifugal fan is easy to cause larger energy loss and larger noise, and meanwhile, the uniformity of the flow distributed in the circumferential direction of the impeller is poorer.
Because the air conditioner among the prior art has the big attack angle of multi-wing centrifugal fan impeller import and easily causes technical problem such as great energy loss and great noise, consequently the utility model discloses study and design a fan subassembly and have its air conditioner.
SUMMERY OF THE UTILITY MODEL
Therefore, the to-be-solved technical problem of the utility model lies in overcoming the defect that the air conditioner has the big attack angle of multi-wing centrifugal fan impeller import and easily causes great energy loss and great noise among the prior art to provide a fan subassembly and have its air conditioner.
In order to solve the above problem, the utility model provides a fan assembly, it includes:
the double-suction centrifugal fan blade is provided with an air inlet space positioned on the radial inner side, and the axial flow fan blade is arranged in the air inlet space of the double-suction centrifugal fan blade; the fan further comprises a motor, the motor is connected with the double-suction centrifugal fan blades to drive the double-suction centrifugal fan blades to rotate, meanwhile, the motor is also connected with the axial flow fan blades to drive the axial flow fan blades to rotate, and the double-suction centrifugal fan blades and the axial flow fan blades are driven by the same motor to rotate at the same rotating speed.
In some embodiments, the double suction centrifugal fan blade includes a first axial end surface and a second axial end surface, the double suction centrifugal fan blade further includes a middle position located at a half length of the axial direction thereof, an axial length of the middle position from the first axial end surface is a first axial length, an axial length of the middle position from the second axial end surface is a second axial length, the first axial length is equal to the second axial length, and the axial flow fan blade is disposed at the middle position inside the double suction centrifugal fan blade.
In some embodiments, the axial-flow fan blade includes a third axial end surface and a fourth axial end surface, a central cross section is provided between the third axial end surface and the fourth axial end surface, an axial distance from the central cross section to the third axial end surface is equal to an axial distance from the central cross section to the fourth axial end surface, and the central cross section coincides with the middle surface.
In some embodiments, the double suction centrifugal fan blade includes a first hub, a second hub and a third hub, the double suction centrifugal fan blade further includes a first blade and a second blade, the first blade is disposed between the first hub and the second hub in a connected manner, the second blade is disposed between the second hub and the third hub in a connected manner, the second hub is disposed between the first hub and the third hub, an axial distance from the second hub to the first hub is equal to an axial distance from the second hub to the third hub, and the second hub is disposed at the middle position.
In some embodiments, the first blade has a blade root with one end connected to the first hub and the other end connected to the second hub, and a tip of the first blade extends radially inward to form a free end; one end of the blade root of the second blade is connected and arranged on the second hub, the other end of the blade root of the second blade is connected and arranged on the third hub, and the blade top of the second blade extends towards the radial inner side to form a free end.
In some embodiments, the first hub, the second hub, and the third hub are each a circular ring structure, such that the double suction centrifugal fan blade is formed as a cylindrical structure.
The utility model also provides an air conditioner, it includes preceding arbitrary fan subassembly.
In some embodiments, the fan assembly is wrapped in the air duct, the air duct can guide out the air outlet on one side of the outer end of the double-suction centrifugal fan blade in the radial direction, and an air outlet is formed at the other end of the air duct.
In some embodiments, both axial ends of the double suction centrifugal fan blade are formed as air suction ports.
In some embodiments, the fan assembly further comprises a heat exchanger disposed in a suction path of the fan assembly.
The utility model provides a pair of fan subassembly and have its air conditioner utensil has following beneficial effect:
the utility model discloses a with axial compressor blade and double suction centrifugal blade combination, when the fan is rotatory, when axial compressor blade subassembly and centrifugal blade subassembly rotate simultaneously promptly, centrifugal blade subassembly is main work blade subassembly, axial compressor blade subassembly moves, reduce the energy loss and the great noise that the big attack angle of multi-wing centrifugal fan impeller import caused, improve the homogeneity of flow in impeller circumference distribution simultaneously, thereby can play the pressure boost effect, both have the characteristics that the axial fan amount of wind is big and also have the characteristics that the centrifugal fan pressure head is high.
Drawings
FIG. 1 is an internal structure view of an air conditioner according to the present invention;
fig. 2 is a three-dimensional structure view of the fan assembly of the present invention;
fig. 3 is an exploded view of the fan assembly of the present invention.
The reference numerals are represented as:
1. an air inlet; 2. a heat exchanger; 3. double-suction centrifugal fan blades; 30. an air inlet space; 31. a first axial end face; 32. a second axial end face; 33. a first hub; 34. a second hub; 35. a third hub; 36. A first blade; 37. a second blade; 4. a motor; 5. axial flow fan blades; 51. a third axial end face; 52. A fourth axial end face; 6. an air outlet; 7. an air duct.
Detailed Description
As shown in fig. 1-3, the utility model provides a fan assembly, it includes:
the double-suction centrifugal fan blade comprises a double-suction centrifugal fan blade 3 and an axial flow fan blade 5, wherein the double-suction centrifugal fan blade 3 is provided with an air inlet space 30 positioned on the radial inner side of the double-suction centrifugal fan blade, and the axial flow fan blade 5 is arranged in the air inlet space 30 of the double-suction centrifugal fan blade 3; the fan further comprises a motor 4, the motor 4 is connected with the double-suction centrifugal fan blade 3 to drive the double-suction centrifugal fan blade 3 to rotate, meanwhile, the motor 4 is also connected with the axial flow fan blade 5 to drive the axial flow fan blade 5 to rotate, and the double-suction centrifugal fan blade 3 and the axial flow fan blade 5 are driven by the same motor 4 to rotate at the same rotating speed.
The utility model discloses a with axial compressor blade and double suction centrifugal blade combination, when the fan is rotatory, when axial compressor blade subassembly and centrifugal blade subassembly rotate simultaneously promptly, centrifugal blade subassembly is main work blade subassembly, axial compressor blade subassembly moves, reduce the energy loss and the great noise that the big attack angle of multi-wing centrifugal fan impeller import caused, improve the homogeneity of flow in impeller circumference distribution simultaneously, thereby can play the pressure boost effect, both have the characteristics that the axial fan amount of wind is big and also have the characteristics that the centrifugal fan pressure head is high.
When the centrifugal fan rotates, the airflow strength near the front disk of the fan blade is insufficient, the airflow at the rear disk of the fan blade is strong, and the airflow at the rear disk of the fan blade is strong, so that pressure difference is easily formed, and the phenomenon of air flow suck back is caused. And the pressure all around is lower, and the intermediate pressure is higher, makes the air draw close to the centre from all around, leads to middle part air current axial flow to be less, can reduce the air supply efficiency lower.
The front disk is the top position of the blade, the rear disk is the root position of the blade, and the relative width of the multi-wing impeller is large, so that airflow at the inlet of the impeller is not uniformly distributed along the axial direction. Near the front disk, the flow is mainly axial, near the middle of the impeller and the rear disk, the flow gradually changes into radial flow. Therefore, near the front disc, a large eddy current area is easily formed under the influence of an eddy current area at the back of the current collector, and fan loss and noise are formed. The front disk vortex region also causes axial maldistribution of the impeller exit flow. In the axial direction, the flow velocity of the air flow near the front disk is small, and the main air flow is usually inclined toward the impeller rear disk position.
The utility model discloses an inside axial compressor fan blade that sets up of double suction centrifugal fan blade, because the axial compressor fan blade has the characteristic that realizes axial business turn over wind, behind the inside axial compressor fan blade that increases of centrifugal fan, thereby form multistage mixed flow fan, when the fan is rotatory, when axial compressor blade subassembly and centrifugal blade subassembly rotate simultaneously promptly, energy loss and great noise that the big attack angle that can effectively reduce multi-wing centrifugal fan impeller import caused, improve the homogeneity of flow at impeller circumference distribution simultaneously, axial compressor blade subassembly can play the effect of increase amount of wind, thereby can increase fan flow and dynamic pressure head, at this moment, the air current inhales via the axial of fan, the air current direction truns into radial outflow after the dual doing work of axial compressor blade subassembly and centrifugal blade subassembly.
The utility model discloses a fan had both had the big characteristics of axial fan amount of wind and had also had the characteristics that the centrifugal fan pressure head is high, had both realized the amount of wind maximize, can also raise the efficiency, improved air supply stability, it is low to have solved the cabinet-type air conditioner amount of wind, and the inefficiency problem of air supply efficiency.
Both can realize the amount of wind maximize, can also raise the efficiency, improve air supply stability, it is low to have solved the cabinet-type air conditioner amount of wind, and the air supply efficiency is low problem.
In some embodiments, the double-suction centrifugal fan blade 3 includes a first axial end surface 31 and a second axial end surface 32, the double-suction centrifugal fan blade 3 further includes a middle position located at a half of the axial length thereof, the axial length of the middle position from the first axial end surface 31 is a first axial length, the axial length of the middle position from the second axial end surface 32 is a second axial length, the first axial length is equal to the second axial length, and the axial flow fan blade 5 is disposed at the middle position inside the double-suction centrifugal fan blade 3.
In some embodiments, the axial-flow fan blade 5 includes a third axial end surface 51 and a fourth axial end surface 52, a central cross section is provided between the third axial end surface 51 and the fourth axial end surface 52, an axial distance between the central cross section and the third axial end surface 51 is equal to an axial distance between the central cross section and the fourth axial end surface 52, and the central cross section coincides with the plane of the middle position.
In some embodiments, the double suction centrifugal fan blade 3 includes a first hub 33, a second hub 34 and a third hub 35, the double suction centrifugal fan blade 3 further includes a first blade 36 and a second blade 37, the first blade 36 is disposed between the first hub 33 and the second hub 34, the second blade 37 is disposed between the second hub 34 and the third hub 35, the second hub 34 is disposed between the first hub 33 and the third hub 35, an axial distance from the second hub 34 to the first hub 33 is equal to an axial distance from the second hub 34 to the third hub 35, and the second hub 34 is located at the middle position.
In some embodiments, one end of the blade root of the first blade 36 is connected to the first hub 33, the other end is connected to the second hub 34, and the blade tip of the first blade 36 extends toward the radial inner side to form a free end; one end of the root of the second blade 37 is connected to the second hub 34, and the other end is connected to the third hub 35, and the tip of the second blade 37 extends radially inward to form a free end.
In some embodiments, the first hub 33, the second hub 34 and the third hub 35 are all annular structures, so that the double suction centrifugal fan blade 3 is formed into a cylindrical structure.
The utility model also provides an air conditioner, it includes preceding arbitrary fan subassembly.
The utility model provides a high fan and have its air conditioner, this fan is with axial compressor blade and the combination of double suction centrifugal blade, promotes double suction centrifugal fan efficiency and air conditioner amount of wind.
Referring to the attached figure 1, the cabinet type air conditioner comprises an air inlet 1, a heat exchanger 2, a double-suction centrifugal fan blade 3, a motor 4, an axial flow fan blade 5 and an air outlet 6. The air current flows in from the air inlet 1, passes through the heat exchanger 2, and flows out from the air outlet 6 after being sucked into the double-suction centrifugal fan blade 3.
Referring to fig. 2 and 3, the axial flow fan blade 5 is located inside the double-suction centrifugal fan blade 3, and the axial flow fan blade 5 and the double-suction centrifugal fan blade 3 are driven and controlled by the same motor, so that simultaneous rotation can be realized.
If a single double-centrifugal fan inside the cabinet machine rotates, the airflow strength near the front disk of the fan blade is insufficient, the airflow at the rear disk of the fan blade is strong, and the airflow at the rear disk of the fan blade is strong, so that the airflow at the front disk is weak, pressure difference is easily formed, and the phenomenon of air back suction is caused.
The utility model discloses combine axial fan blade and double suction centrifugal fan blade effectively, because the axial fan blade has the characteristic that realizes axial business turn over wind, behind the inside axial fan blade that increases of centrifugal fan, thereby form multistage mixed flow fan, when the fan is rotatory, when axial fan blade subassembly and centrifugal fan blade subassembly rotate simultaneously promptly, reduce energy loss and great noise that the big attack angle of multi-wing centrifugal fan impeller import caused, improve the homogeneity of flow at impeller circumference distribution simultaneously, axial fan blade subassembly can play the effect of increase amount of wind, thereby can increase fan flow and dynamic pressure head, at this moment, the air current inhales via the axial of fan, the air current direction truns into radial outflow after the dual doing work of axial fan blade subassembly and centrifugal fan blade subassembly.
The utility model discloses a fan had both had the big characteristics of axial fan amount of wind and had also had the characteristics that the centrifugal fan pressure head is high, had both realized the amount of wind maximize, can also raise the efficiency, improved air supply stability, it is low to have solved the cabinet-type air conditioner amount of wind, and the inefficiency problem of air supply efficiency.
In some embodiments, the fan assembly further comprises an air duct 7, the fan assembly is wrapped in the air duct 7, the air duct 7 can guide out air discharged from one side of the outer end of the double-suction centrifugal fan blade 3 in the radial direction, and an air outlet 6 is formed at the other end of the air duct 7.
In some embodiments, both axial ends of the double suction centrifugal fan blade 3 are formed as air suction openings.
In some embodiments, the fan assembly further comprises a heat exchanger 2, and the heat exchanger 2 is arranged on a suction path of the fan assembly. The heat exchanger is preferably an inverted V-shaped heat exchanger arrangement.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention. The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A fan assembly, characterized by: the method comprises the following steps:
the double-suction centrifugal fan blade comprises a double-suction centrifugal fan blade (3) and an axial flow fan blade (5), wherein the double-suction centrifugal fan blade (3) is provided with an air inlet space (30) located on the radial inner side of the double-suction centrifugal fan blade, and the axial flow fan blade (5) is arranged in the air inlet space (30) of the double-suction centrifugal fan blade (3); the fan assembly further comprises a motor (4), the motor (4) is connected with the double-suction centrifugal fan blade (3) to drive the double-suction centrifugal fan blade (3) to rotate, meanwhile, the motor (4) is further connected with the axial flow fan blade (5) to drive the axial flow fan blade (5) to rotate, and the double-suction centrifugal fan blade (3) and the axial flow fan blade (5) are driven by the same motor (4) to rotate at the same rotating speed.
2. The fan assembly of claim 1, wherein:
the double-suction centrifugal fan blade (3) comprises a first axial end face (31) and a second axial end face (32), the double-suction centrifugal fan blade (3) further comprises a middle position located at a half of the axial length of the double-suction centrifugal fan blade, the middle position is far away from the first axial end face (31) and is the first axial length, the middle position is far away from the second axial end face (32) and is the second axial length, the first axial length is equal to the second axial length, and the axial flow fan blade (5) is arranged in the double-suction centrifugal fan blade (3) and is located at the middle position.
3. The fan assembly of claim 2, wherein:
the axial-flow fan blade (5) comprises a third axial end face (51) and a fourth axial end face (52), a central cross section is arranged between the third axial end face (51) and the fourth axial end face (52), the axial distance between the central cross section and the third axial end face (51) is equal to the axial distance between the central cross section and the fourth axial end face (52), and the central cross section is overlapped with the surface of the middle position.
4. The fan assembly of claim 2 or 3, wherein:
double suction centrifugal fan blade (3) include first wheel hub (33), second wheel hub (34) and third wheel hub (35), double suction centrifugal fan blade (3) still include first blade (36) and second blade (37), first blade (36) are connected and are set up first wheel hub (33) with between second wheel hub (34), second blade (37) are connected and are set up second wheel hub (34) with between third wheel hub (35), second wheel hub (34) are located first wheel hub (33) with between third wheel hub (35), just second wheel hub (34) apart from the axial distance of first wheel hub (33), with second wheel hub (34) apart from the axial distance of third wheel hub (35) equals, second wheel hub (34) are located intermediate position department.
5. The fan assembly of claim 4, wherein:
one end of the blade root of the first blade (36) is connected and arranged on the first hub (33), the other end of the blade root of the first blade is connected and arranged on the second hub (34), and the blade top of the first blade (36) extends towards the radial inner side to form a free end; one end of the blade root of the second blade (37) is connected and arranged on the second hub (34), the other end of the blade root is connected and arranged on the third hub (35), and the blade top of the second blade (37) extends towards the radial inner side to form a free end.
6. The fan assembly of claim 4, wherein:
the first hub (33), the second hub (34) and the third hub (35) are all annular structures, so that the double-suction centrifugal fan blade (3) is formed into a cylindrical structure.
7. An air conditioner, characterized in that:
comprising a fan assembly according to any of claims 1-6.
8. The air conditioner according to claim 7, wherein:
still include wind channel (7), wind channel (7) will fan subassembly wraps up in wherein, just wind channel (7) can be with the air-out of the radial outer end one side of double suction centrifugal fan blade (3) is derived, wind channel (7) other end forms air outlet (6).
9. The air conditioner according to claim 7, wherein:
the two axial ends of the double-suction centrifugal fan blade (3) are formed into suction openings.
10. The air conditioner according to claim 7, wherein:
the fan assembly further comprises a heat exchanger (2), and the heat exchanger (2) is arranged on a suction path of the fan assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023233135.2U CN214660955U (en) | 2020-12-28 | 2020-12-28 | Fan assembly and air conditioner with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023233135.2U CN214660955U (en) | 2020-12-28 | 2020-12-28 | Fan assembly and air conditioner with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214660955U true CN214660955U (en) | 2021-11-09 |
Family
ID=78504053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023233135.2U Active CN214660955U (en) | 2020-12-28 | 2020-12-28 | Fan assembly and air conditioner with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214660955U (en) |
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2020
- 2020-12-28 CN CN202023233135.2U patent/CN214660955U/en active Active
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