CN210623187U - Anti-surge cross-flow fan blade and air conditioner - Google Patents
Anti-surge cross-flow fan blade and air conditioner Download PDFInfo
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- CN210623187U CN210623187U CN201921526936.2U CN201921526936U CN210623187U CN 210623187 U CN210623187 U CN 210623187U CN 201921526936 U CN201921526936 U CN 201921526936U CN 210623187 U CN210623187 U CN 210623187U
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Abstract
The utility model provides an anti-surge's through-flow fan blade and air conditioner, the through-flow fan blade is hollow cylindrical, include: the middle-section fan blades are communicated with each other; the two end cover fan blades are respectively arranged at two ends of the cross-flow fan blade, the first ends of the end cover fan blades are communicated with the middle fan blade, and the second ends of the end cover fan blades are provided with end covers; the cross-flow fan blade comprises at least two pressure difference balance assemblies, wherein the two pressure difference balance assemblies are arranged at preset positions in a hollow structure of the cross-flow fan blade and used for reducing the pressure difference between the middle and two ends in the cross-flow fan blade, and the wind speed at the preset positions is smaller than a set wind speed value. The utility model discloses a through-flow fan blade is through setting up the balanced subassembly of pressure differential, can compensate both ends amount of wind and wind speed, and balanced pressure differential reaches the purpose of anti complete machine surge.
Description
Technical Field
The utility model relates to an air conditioner technical field particularly, relates to an anti-surge's through-flow fan blade and air conditioner.
Background
At present, cross-flow fan blades and an air duct are mostly adopted by an indoor on-hook air conditioner, and the structural characteristic of pressure difference exists between two ends and the middle of the cross-flow air duct, so that the household air conditioner is easy to form whole machine surge at medium and low wind gears. Fig. 1 is a schematic structural diagram of a conventional cross-flow fan blade. As shown in fig. 1, the conventional cross-flow fan blade 1 includes a plurality of middle-segment fan blades 101 and end cover fan blades 102 at two ends, and the cross-flow fan blades 103 of the cross-flow fan blade 1 are uniformly arranged along the axial direction and enclose a hollow cylinder shape, so that the cross-flow fan blade has a relatively simple structure and no anti-surge capability. In order to inhibit surge, the traditional method is to change a volute tongue-shaped line, a fan blade and an air duct structure and increase the anti-surge performance of the whole machine, but the anti-surge effect of the method cannot be expected.
SUMMERY OF THE UTILITY MODEL
The utility model provides a problem how reduce the pressure differential of through-flow fan blade wind channel inside middle and both ends air current suppresses the production of wind channel surge.
In order to solve the above problem, the utility model provides an anti-surge's through-flow fan blade, the through-flow fan blade is hollow cylindrical, include:
the middle-section fan blades are communicated with each other;
the two end cover fan blades are respectively arranged at two ends of the cross-flow fan blade, the first ends of the end cover fan blades are communicated with the middle fan blade, and the second ends of the end cover fan blades are provided with end covers;
the cross-flow fan blade comprises at least two pressure difference balance assemblies, wherein the two pressure difference balance assemblies are arranged at preset positions between two end covers in a hollow structure of the cross-flow fan blade and used for reducing the pressure difference between the middle and two ends in the cross-flow fan blade, and the wind speed at the preset positions is smaller than a set wind speed value.
Through setting up pressure differential balance assembly, can compensate both ends amount of wind and wind speed, balanced pressure differential reaches the purpose of anti complete machine surge.
Further, the value range of the set wind speed value is 40% -60% of the wind speed inside the middle segment fan blade at the middle position of the cross-flow fan blade.
The set wind speed value is set by taking the maximum wind speed inside the cross-flow fan blade as a reference, and the maximum wind speed position is the wind speed at the middle segment fan blade positioned in the middle of the cross-flow fan blade, so that the differential pressure balance assembly is arranged at the position where the wind speed is less than the preset percentage of the maximum wind speed, and the wind quantity at the two ends is improved.
Furthermore, the pressure difference balance assembly is arranged between the end cover fan blade and the adjacent middle fan blade.
The pressure difference balancing component is arranged between the middle-section fan blades and the end cover fan blades which are communicated with each other, so that the air flow distribution of an air channel formed in the cross-flow fan blades is more uniform, the problem that the end cover fan blades on two sides of the cross-flow fan blades are easy to form pressure difference with adjacent fan blades is solved, and the generation of air channel surge is inhibited.
Furthermore, the pressure difference balance assembly is an axial flow fan blade, and a rotating shaft of the axial flow fan blade and the axial direction of the cross-flow fan blade are on the same straight line.
By adopting the axial flow fan blade as the pressure difference balancing component, the axial flow fan blade can do work to introduce airflow into two ends from a middle position in the rotating process of the cross flow fan blade, and the transient airflow flow of the air duct is increased, so that the generation of air duct surging is inhibited.
Further, the cross-flow fan blade still includes:
the axial flow fan blades are arranged on the connecting shaft and can move to the preset positions along the connecting shaft.
Therefore, the air quantity at two ends inside the cross-flow fan blade can be increased according to the specific conditions of the whole machine and the air duct, so that the air speed distribution is more uniform.
Furthermore, the pressure difference balancing component is a partition plate arranged on the end face of the middle-segment fan blade or the end cover fan blade, a plurality of openings and bent parts are uniformly arranged on the partition plate, the bent parts are arranged on one side of the openings, and a preset included angle is formed between the bent parts and the plane where the openings are located.
The partition board is used as a differential pressure balancing component, so that the differential pressure balancing component is simple and easy to manufacture, and the effects of compensating air quantity and air speed at two ends, balancing differential pressure and resisting surge can be achieved.
Furthermore, the partition board is a circular partition board, a plurality of fan-shaped openings and fan-shaped bent parts are uniformly arranged on the circular partition board, and the circle center of each fan-shaped opening is the circle center of the circular partition board; the fan-shaped bent part is arranged on one side of the fan-shaped opening, and a preset included angle is formed between the fan-shaped bent part and the plane where the fan-shaped opening is located.
Through setting up sectorial opening and kink, can guide the air current better to reach the effect of compensation both ends amount of wind and wind speed.
Further, the preset included angle is 30-65 degrees.
Due to the fact that the preset included angle of 30-65 degrees is set, the requirement for axial air guiding of the air duct inside the cross-flow fan blade can be better met.
Furthermore, the partition plate and the middle-section fan blade or the end cover fan blade are of an integral structure.
Therefore, the pressure difference balance assembly can be conveniently manufactured, and the convenience of fan blade processing is improved.
According to another aspect of the present invention, there is provided an air conditioner, comprising:
the anti-surge cross-flow fan blade is arranged in an air duct of the air conditioner.
The air conditioner has the same technical effect as the anti-surge cross-flow fan blade, and the details are not repeated herein.
Drawings
FIG. 1 is a schematic structural diagram of a conventional cross-flow fan blade;
fig. 2a is a schematic structural view of a cross-flow fan blade for preventing surge according to a first embodiment of the present invention;
fig. 2b is a schematic structural view of an axial flow fan blade installed in a cross-flow fan blade for preventing surge according to a first embodiment of the present invention;
fig. 3a is a schematic view illustrating the airflow direction of the air conditioner according to the embodiment of the present invention;
fig. 3b is a schematic view of the airflow direction of the anti-surge cross-flow fan blade according to the embodiment of the present invention;
fig. 4 is a schematic structural view of a cross-flow fan blade for preventing surge according to a second embodiment of the present invention;
fig. 5 is a schematic structural view of a pressure difference balancing assembly in a cross-flow fan blade for preventing surge according to a third embodiment of the present invention;
fig. 6 is a schematic structural view of an air conditioner according to a fourth embodiment of the present invention;
fig. 7 is a schematic view of a fourth embodiment of the present invention illustrating an installation structure of a through flow fan blade in an air conditioner.
Description of reference numerals:
1-a cross-flow fan blade; 2-air inlet; 3, air outlet; 4-an evaporator; 101-middle segment fan blade; 1011-end plate; 102-end cover fan blades; 1021-end cap; 103-cross flow vanes; 104-axial flow fan blades; 105-a connecting shaft; 106-circular separator plate; 1061-sector opening; 1062-fan bend.
Detailed Description
The existing air conditioner usually adopts cross-flow fan blades and an air duct, and the whole surge is easily formed in a specific application environment due to the characteristic of the cross-flow air duct. The main causes of surge formation are as follows:
internal cause: the pneumatic parameters (such as the position of the eccentric vortex center) of the cross-flow fan are not matched with the structural parameters (such as the volute tongue-shaped line, the radius, various gaps and the like); the air outlet at two ends of the whole air duct system is less, the air speed is low, the local pressure difference is too large, and the air flow operation is unstable.
(II) exogenous factors: the crossflow blower operates for a long time under unstable region conditions. Especially, when the air conditioner operates under the working condition of small flow, the conditions of less air outlet at two ends, low air speed and overlarge pressure difference between the middle part and the two ends of the whole air conditioner are aggravated.
In order to solve the problem, the utility model provides an anti-surge's through-flow fan blade, the through-flow fan blade is hollow cylindrical, set up in the wind channel of air conditioner, including a plurality of well sections fan blades, two end cover fan blades and two at least pressure differential balance assembly. The middle-section fan blades are arranged in the middle of the cross-flow fan blades; the two end cover blades are respectively arranged at two ends of the plurality of middle-section blades, one end of each end cover blade is connected with the middle-section blades, and the other end of each end cover blade is provided with an end cover for sealing; in addition, at least two pressure difference balance assemblies are arranged at preset positions between the two end covers in the hollow structure of the cross-flow fan blade, the middle of the interior of the cross-flow fan blade is guided to two ends of the interior of the cross-flow fan blade by applying work by the cross-flow fan blade or guiding airflow in the air duct, and the pressure difference between the airflow at the middle and two ends of the interior of the cross-flow fan blade is balanced.
And the preset position is close to the end cover fan blades at two ends of the cross-flow fan blade. The cross-flow fan blade has less air intake on the end surfaces at two sides due to the structure in the operation process of the whole machine, and forms pressure difference with the adjacent fan blades, thereby often causing uneven air outlet and surging. Therefore, the pressure difference balance assembly is arranged at a position close to the end cover fan blade, so that the air quantity at two ends inside the cross-flow fan blade can be increased.
Specifically, the wind speed at the preset position where two differential pressure balance assemblies are installed is less than a set wind speed value, according to the test of the wind speed and the wind speed of the whole machine, the differential pressure balance assemblies are arranged at the positions where the wind speeds at two ends are less than the set wind speed value, the wind speeds and the wind speeds at two ends are compensated, the differential pressure is balanced, and the purpose of resisting the surge of the whole machine is achieved.
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.
In a first illustrative embodiment of the present invention, a cross-flow fan blade for surge prevention in a wall-mounted air conditioner indoor unit is provided. In this embodiment, small axial flow fan blade structures are added to both ends of the cross-flow fan blade to increase the air intake at both ends of the fan blade.
Fig. 2a is a schematic structural diagram of a cross-flow fan blade for preventing surge according to a first embodiment of the present invention. As shown in fig. 2a, the cross-flow fan blade 1 is axially divided into 10 segments, and includes a plurality of middle-segment fan blades 101 and two end cover fan blades 102 at two ends thereof. The cross-flow blades 103 of each fan blade are uniformly distributed along the axial direction and are enclosed into a hollow cylinder shape, each fan blade is coaxially and fixedly installed, and a hollow air duct is formed inside the cross-flow fan blade 1. In the 10 sections of the fan blades, the air volume and the air speed are distributed at the lowest positions of the end cover fan blades 3 at the two ends of the cross-flow fan blade 1. In general, due to the low wind speed and low pressure at the two end sections, the air flow surge phenomenon is easy to occur due to the pressure difference between the two end sections and the adjacent sections.
In this embodiment, a small axial flow fan blade 104 is arranged between a middle fan blade 101 and an end cover fan blade 102 of a cross-flow fan blade 1 structure, and a rotating shaft of the axial flow fan blade 104 and an axial direction of the cross-flow fan blade 1 are on the same straight line. Fig. 2b is a schematic structural diagram of an axial flow fan blade installed in a cross-flow fan blade for preventing surge according to a first embodiment of the present invention. Specifically, the end surfaces of the middle fan blade 101 and the end cover fan blade 102 are provided with an annular end plate 1011, and the axial flow fan blade 104 may be installed and fixed on the end plate 1011, and fixed between the middle fan blade 101 and the end cover fan blade 102 through the end plate 1011. The axial flow fan blades 104 are arranged between the middle fan blades 101 and the end cover fan blades 102 which are communicated with each other, airflow flows to two sides from the middle more through the rotation of the axial flow fan blades 104, airflow distribution of an air channel formed in the inner portion of the cross flow fan blades is more uniform, and the airflow flows out from the same air outlet direction after passing through the anti-surge cross flow fan blades, namely air is exhausted from the lower portions of the cross flow fan blades, so that the whole machine surge caused by the pressure difference is avoided.
Fig. 3a is a schematic view illustrating the airflow direction of the air conditioner according to the embodiment of the present invention. As shown in fig. 3a, the air flow flows into the air duct of the air conditioner through the air inlet 2 at the upper end of the air conditioner, passes through the evaporator 4 and the cross-flow fan blade 1, and then flows out from the air outlet 3 at the lower part. Fig. 3b is the schematic view of the airflow direction of the cross-flow fan blade for preventing surge according to the embodiment of the present invention. As shown in fig. 3b, in the process of rotating the cross-flow fan blade 1, in addition to the work of the cross-flow fan blade 1 itself, the axial flow fan blade 104 rotates at the same time, and the work of the axial flow fan blade 104 introduces airflow into two ends from a middle position, so that the air output at two ends of the air duct is increased, the pressure difference is balanced, and the transient airflow flow of the air duct is increased, thereby inhibiting the generation of air duct surge.
In a second exemplary embodiment of the present invention, a surge-proof cross-flow fan blade is also provided. In this embodiment, as in the first embodiment, the axial-flow fan blade 104 is also used as a differential pressure balancing component. Fig. 4 is a schematic structural diagram of a cross-flow fan blade 1 for preventing surge according to a second embodiment of the present invention. As shown in fig. 4, different from the first embodiment, the cross-flow fan blade 1 of the present embodiment further includes a connecting shaft 105, and two ends of the connecting shaft 105 are respectively fixed to the end covers 1021 of the two end cover fan blades 3. In this embodiment, the connecting shaft 105 is disposed on the cylindrical axis of the cross-flow fan blade 1, and the rotation center of the axial-flow fan blade 104 passes through the connecting shaft 105 and is movably mounted on the connecting shaft 105, so that the axial-flow fan blade can freely move along the connecting shaft 105.
The final mounting position of the axial-flow fan blade 104 on the connecting shaft 105 can be determined according to different overall machines and air duct conditions. The method for determining the installation position comprises the following steps: according to the test results of the air quantity and the air speed of the whole machine, the axial flow fan blades 104 are arranged at the positions with smaller air speeds at the two ends, so that the air quantity and the air speed at the two ends are compensated, the differential pressure is balanced, and the purpose of resisting the surge of the whole machine is achieved. Therefore, the position of the axial flow fan blade 104 can be determined according to the specific conditions of the whole machine and the air duct, so that the air quantity at two ends inside the through-flow fan blade is increased, and the air speed distribution is more uniform.
Specifically, the axial flow fan blade 104 may be disposed at a position where the wind speed at two ends inside the cross-flow fan blade 1 is less than a set wind speed value. The set wind speed value is set based on the maximum wind speed inside the cross-flow fan blade 1, generally, the maximum wind speed is the wind speed at the middle segment fan blade 101 located at the middle position of the cross-flow fan blade 1, and the axial flow fan blade 104 is arranged at the position where the wind speed is less than the predetermined percentage of the maximum wind speed. The predetermined percentage is typically 35% to 60%. In this embodiment, the wind speed values of various positions inside the cross-flow fan blade 1 are determined through the test of the wind volume and the wind speed of the whole machine, and the final mounting position of the axial-flow fan blade 104 is determined according to the difference or percentage between the wind speed of various positions and the maximum wind speed.
Therefore, the cross-flow fan blade of the embodiment can increase the air quantity at two ends inside the cross-flow fan blade according to the specific conditions of the whole machine and the air duct, so that the air speed distribution is more uniform, and the purpose of balancing the pressure difference is achieved.
In the third exemplary embodiment of the present invention, a surge-proof cross-flow fan blade is also provided. Fig. 5 is a schematic structural diagram of a pressure difference balancing assembly in a cross-flow fan blade 1 for preventing surge according to a third embodiment of the present invention. As shown in fig. 5, different from the above embodiment, the pressure difference balancing component is a circular partition plate 106 disposed on an end surface of the middle-segment fan blade 101 or the end cover fan blade 102, a plurality of fan-shaped openings 1061 and fan-shaped bent portions 1062 are uniformly disposed on the circular partition plate 106, and a circle center of the fan shape is a circle center of the circular partition plate 106; the fan-shaped bent portion 1062 is disposed at one side of the fan-shaped opening 1061. In this embodiment, the fan-shaped bent portions 1062 are disposed on the same side of the fan-shaped opening 1061 in the counterclockwise or clockwise direction, and the fan-shaped bent portions 1062 and the plane of the fan-shaped opening 1061 form a predetermined included angle.
The pressure difference balancing component is formed by the partition plates, so that the pressure difference balancing component is simple and easy to manufacture, and the effects of compensating air quantity and air speed at two ends, balancing pressure difference and resisting surge can be achieved. And through set up sectorial opening and kink on circular baffle, can guide the air current better to reach the effect of compensation both ends amount of wind and wind speed.
Preferably, the preset included angle is 30-65 degrees, so that the airflow distribution of the air duct formed inside the cross-flow fan blade 1 is more uniform, and the requirement of axial air guiding of the air duct inside the cross-flow fan blade 1 is better met.
Furthermore, in order to facilitate manufacturing of the differential pressure balancing assembly, in consideration of convenience in processing the blades, the circular partition plate 106 and the middle-segment blade 101 or the end cover blade 102 may be integrated, that is, the circular partition plate 106 and the end plate 1011 of the middle-segment blade 101 or the end cover blade 102 are integrated. After the circular partition 106 forms a closed structure on the end face of the middle-segment blade 101 or the end-cap blade 102, the fan-shaped bending part 1062 is formed by cutting the circular partition 106 and bending it to one side, and after bending, the circular partition 106 forms a corresponding fan-shaped bending part 1062.
It should be noted that, in the above embodiment, two differential pressure balancing assemblies are provided; in other embodiments, a plurality of pairs of pressure difference balancing assemblies may be further added at other positions between the two end covers 1021 in the cross-flow fan blade 1, and the wind speed at these positions is less than the set wind speed value, so as to further enhance the effect of balancing the pressure difference.
In a fourth exemplary embodiment of the present invention, an air conditioner is provided, which employs the above-mentioned anti-surge cross-flow fan blade. Fig. 6 is a schematic structural view of an air conditioner according to a fourth embodiment of the present invention. Fig. 7 is a schematic view of the installation structure of the through flow fan blade 1 in the air conditioner according to the fourth embodiment of the present invention. As shown in fig. 6 to 7, in this embodiment, the air conditioner is provided with only one air outlet 3, and the air outlet 3 is arranged in parallel to the axial position of the cross-flow fan blade 1. The air flow in the air duct of the air conditioner flows out along the air outlet direction of the air outlet 3, so that the phenomenon that the balance differential pressure effect is weakened or even loses efficacy due to the fact that the air flow flows out from other directions is prevented.
In order to verify the anti-surge capacity of the air conditioner adopting the anti-surge cross-flow fan blade, the anti-surge capacity of the air conditioner is tested. In the actual test, the condition that an air inlet of the whole air conditioner is dirty and blocked is simulated, and the air inlet is shielded by adopting a filter screen, so that the condition that the whole air conditioner is easy to surge is simulated under the condition that the air speed and the air quantity of the middle-low grade air conditioner are small.
In the experiment, to former through-flow fan blade and the utility model discloses an axial compressor fan blade contrasts as the air conditioner of the anti-surge through-flow fan blade of pressure differential balance subassembly, and the successive layer increases the number of piles of air intake filter screen respectively, and gained test result is as shown in table 1.
TABLE 1 anti-Surge capability test results
The test result shows that the surge phenomenon is generated in the air conditioner adopting the original through-flow fan blade under the condition that the air inlet of the air conditioner is not provided with a filter screen; the surge-proof cross-flow fan blade of the embodiment does not generate a surge phenomenon under the condition that no more than 5 layers of filter screens are arranged; the surge phenomenon occurs only when 6 layers of filter screens are arranged. Through tests, the anti-surge capacity of the axial flow fan blade arranged between the middle section fan blade and the end cover fan blade of the cross-flow fan blade is obviously enhanced, and the development requirement of a new product is met.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the scope or spirit of the present invention, and the scope of the present invention is defined by the appended claims.
Claims (10)
1. The cross-flow fan blade (1) for preventing surging is characterized in that the cross-flow fan blade (1) is in a hollow cylindrical shape and comprises:
the fan comprises a plurality of middle fan blades (101), wherein the middle fan blades (101) are communicated with one another;
the cross-flow fan comprises two end cover fan blades (102), wherein the two end cover fan blades (102) are respectively arranged at two ends of the cross-flow fan blade (1), the first ends of the end cover fan blades (102) are communicated with the middle-section fan blade (101), and the second ends of the end cover fan blades are provided with end covers (1021);
the cross-flow fan comprises at least two pressure difference balance assemblies, wherein the two pressure difference balance assemblies are arranged at preset positions in a hollow structure of the cross-flow fan blade (1) and used for reducing the pressure difference between the middle and two ends in the cross-flow fan blade (1), and the wind speed at the preset positions is smaller than a set wind speed value.
2. The anti-surge cross-flow fan blade (1) according to claim 1, wherein the value range of the set wind speed value is 35% -60% of the wind speed inside the middle segment fan blade (101) in the middle position of the cross-flow fan blade (1).
3. The anti-surge cross-flow fan blade (1) of claim 1, wherein the differential pressure balancing assembly is disposed between the end cover fan blade (102) and its adjacent middle segment fan blade (101).
4. The anti-surge cross-flow fan blade (1) according to claim 1, wherein the pressure difference balancing component is an axial flow fan blade (104), and a rotating shaft of the axial flow fan blade (104) and a shaft of the cross-flow fan blade (1) are in the same straight line.
5. The cross-flow fan blade (1) for preventing surge according to claim 4, characterized in that the cross-flow fan blade (1) further comprises:
the fan blade assembly comprises a connecting shaft (105), wherein two ends of the connecting shaft (105) are respectively fixed on end covers (1021) of two end cover fan blades (102), and axial flow fan blades (104) are installed on the connecting shaft (105) and can move to the preset position along the connecting shaft (105).
6. The anti-surge cross-flow fan blade (1) according to claim 1, wherein the differential pressure balancing component is a partition plate disposed on an end surface of the middle fan blade (101) or the end cover fan blade (102), the partition plate is uniformly provided with a plurality of openings and bent portions, the bent portions are disposed on one side of the openings, and the bent portions and a plane where the openings are located form a predetermined included angle.
7. The anti-surge cross-flow fan blade (1) according to claim 6, wherein the partition plate is a circular partition plate (106), a plurality of fan-shaped openings (1061) and fan-shaped bent portions (1062) are uniformly arranged on the circular partition plate (106), and the circle center of each fan-shaped opening (1061) is the circle center of the circular partition plate (106); the fan-shaped bent part (1062) is disposed at one side of the fan-shaped opening (1061), and the plane where the fan-shaped bent part (1062) and the fan-shaped opening (1061) are located forms the predetermined included angle.
8. The anti-surge through-flow fan blade (1) according to claim 6 or 7, wherein the predetermined included angle is 30 ° -65 °.
9. The anti-surge cross-flow fan blade (1) of claim 6, wherein the partition plate is of an integral structure with the middle fan blade (101) or the end cover fan blade (102).
10. An air conditioner, comprising:
the anti-surge cross-flow fan blade (1) as set forth in any one of claims 1-9, which is arranged in the air duct of the air conditioner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921526936.2U CN210623187U (en) | 2019-09-12 | 2019-09-12 | Anti-surge cross-flow fan blade and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921526936.2U CN210623187U (en) | 2019-09-12 | 2019-09-12 | Anti-surge cross-flow fan blade and air conditioner |
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| Publication Number | Publication Date |
|---|---|
| CN210623187U true CN210623187U (en) | 2020-05-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921526936.2U Withdrawn - After Issue CN210623187U (en) | 2019-09-12 | 2019-09-12 | Anti-surge cross-flow fan blade and air conditioner |
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| CN (1) | CN210623187U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110486322A (en) * | 2019-09-12 | 2019-11-22 | 宁波奥克斯电气股份有限公司 | A kind of through-flow fan blade and air conditioner of anti-surge |
-
2019
- 2019-09-12 CN CN201921526936.2U patent/CN210623187U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110486322A (en) * | 2019-09-12 | 2019-11-22 | 宁波奥克斯电气股份有限公司 | A kind of through-flow fan blade and air conditioner of anti-surge |
| CN110486322B (en) * | 2019-09-12 | 2024-06-14 | 宁波奥克斯电气股份有限公司 | Anti-surge cross-flow fan blade and air conditioner |
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