CN211924536U - Volute structure and fan - Google Patents
Volute structure and fan Download PDFInfo
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- CN211924536U CN211924536U CN202020619928.9U CN202020619928U CN211924536U CN 211924536 U CN211924536 U CN 211924536U CN 202020619928 U CN202020619928 U CN 202020619928U CN 211924536 U CN211924536 U CN 211924536U
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Abstract
The utility model provides a spiral case structure and fan relates to fan technical field. The volute structure comprises a volute main body and a flow guide ring; the volute main body is internally provided with an installation cavity for installing a wind wheel, and the volute main body is also provided with an opening communicated with the installation cavity; the guide ring is arranged at the opening, protrudes out of the plane where the opening is located, and a guide channel communicated with the mounting cavity is formed on the inner side of the guide ring. The utility model also provides a fan, it has adopted foretell spiral case structure. The utility model provides a spiral case structure and fan can solve prior art tuber pipe machine noise big, influence user experience's technical problem.
Description
Technical Field
The utility model relates to a fan technical field particularly, relates to a spiral case structure and fan.
Background
The centrifugal air duct system of the existing air duct machine can generate obvious fin blowing sound because wind is directly thrown out from the inside of a volute and passes through an evaporator, and user experience is influenced. Therefore, the volute structure needs to be optimized to change the wind field and improve the sound quality.
SUMMERY OF THE UTILITY MODEL
The utility model provides a problem solve prior art tuber pipe machine noise big, influence user experience's technical problem.
In order to solve the above problems, the utility model provides a volute structure, which comprises a volute main body and a flow guiding ring;
the volute body is internally provided with an installation cavity for installing a wind wheel, and the volute body is also provided with an opening communicated with the installation cavity;
the guide ring is arranged at the opening, protrudes out of the plane where the opening is located, and a guide channel communicated with the mounting cavity is formed on the inner side of the guide ring.
The utility model provides a spiral case structure can form the water conservancy diversion passageway through the inboard of water conservancy diversion circle, and water conservancy diversion passageway and installation cavity intercommunication, installs inside the installation cavity when the wind wheel, and after the air intake air, carries out the water conservancy diversion in partial air current flows to the water conservancy diversion passageway, and the water conservancy diversion passageway provides the effect of reposition of redundant personnel this moment, can reduce the wind pressure for the air-out is more smooth and easy. When the airflow in the flow guide channel flows to the air outlet of the volute structure in the flow guide channel, part of the airflow enters the air outlet and is mixed with the main airflow, so that the mixed flow and air combing effect is achieved, and the tone quality is optimized by changing the wind field. The technical problem that the noise of the air conditioner is high and user experience is influenced in the prior art can be solved.
Optionally, the deflector ring comprises a connecting part and a deflector part;
the connecting part is connected to the outer side of the volute main body and protrudes out of the plane of the opening;
the flow guide portion is arranged on one side, away from the volute body, of the connecting portion, faces towards the installation cavity in a bent mode, and the inner side of the flow guide portion and the connecting portion jointly form the flow guide channel.
Wherein, partly outwards bulge the whole water conservancy diversion circle through the connecting portion, and then can avoid water conservancy diversion passageway to influence the volume in the installation cavity, can avoid influencing the intake and the output of main air current. Namely, under the condition that the wind wheel is not influenced to pass through the air outlet of the volute structure, the wind flow of the air flow is realized, the wind pressure is reduced, the air outlet is smooth, and therefore the purposes of optimizing the tone quality and the like of a wind field are changed. The technical problem that the noise of the air conditioner is large and user experience is influenced in the prior art is further solved.
Optionally, the flow guide part comprises a first flow guide section and a second flow guide section, the first flow guide section is connected to the connecting part, the second flow guide section is arranged on one side, away from the connecting part, of the first flow guide section, the second flow guide section faces towards the installation cavity and is bent into an arc shape, and the inner side of the first flow guide section, the inner side of the second flow guide section and the inner side of the connecting part jointly form the flow guide channel.
The first flow guide section is arranged at the front end of the second flow guide section forming the flow guide channel, so that the space size of a flow guide space can be enlarged, the flow distribution effect provided by the flow guide channel is further improved, and the smoothness of air outlet of the volute main body is ensured.
Optionally, the side surface of the second flow guide section for forming the flow guide channel is an inner concave surface.
The second water conservancy diversion section can further enlarge the space size of water conservancy diversion passageway through forming the concave surface in order to enclose into the water conservancy diversion passageway, can further improve the reposition of redundant personnel effect, guarantees smoothly of air-out.
Optionally, the flow guiding portion further includes a third flow guiding section, and the third flow guiding section is disposed on one side of the second flow guiding section away from the first flow guiding section and extends straight towards the inside of the installation cavity.
Through the third water conservancy diversion section that sets up straight extension in the rear end at the second water conservancy diversion section, the air inlet of the air intake of can being convenient for can directly get into to the wind wheel after the air inlet of air intake, avoid the air inlet confusion, in order to guarantee to install the normal function at the inside wind wheel of installation cavity.
Optionally, the third flow guide section has a length in the extending direction of the third flow guide section in the range of 1mm-2 mm.
The length of the third flow guide section is set to be 1mm-2mm, so that the arc formed by the second flow guide section can be ensured to be large enough as much as possible, and a better flow guide effect can be provided through the second flow guide section.
Optionally, the first flow guide section extends straight towards a centre line of the opening.
Optionally, the length of the first flow guiding section along the extending direction of the first flow guiding section ranges from 1mm to 2 mm.
The length of the first flow guide section is set to be 1mm-2mm, so that the arc formed by the second flow guide section can be ensured to be large enough as much as possible, and a better flow guide effect can be provided through the second flow guide section.
Optionally, the height of the connecting part relative to the plane of the opening is 3mm-6 mm.
The height of the connecting part determines the space size of the flow guide channel, the undersize space of the flow guide channel can cause the insufficient shunting effect of the flow guide channel, and the oversized space of the flow guide channel can cause the generation of abnormal sound due to the fact that the second flow guide section is not smooth enough. The height of the connecting part is set to be 3mm-6mm, so that the flow guide channel can have a sufficient flow dividing effect, and the problem of abnormal sound can be solved.
Optionally, the connecting portion and the flow guide portion are both annular;
the difference range of the outer ring diameter of the connecting part and the inner ring diameter of the flow guide part is 20-50 mm.
By setting the difference value to be 20-50 mm, the space size of the flow guide channel can be set at a proper position, so that the flow guide channel is ensured to have a sufficient flow dividing effect, and the problem of abnormal sound can be solved.
A fan comprises a wind wheel and a volute structure, wherein the volute structure comprises a volute main body and a flow guide ring;
the volute body is internally provided with an installation cavity for installing a wind wheel, and the volute body is also provided with an opening communicated with the installation cavity;
the guide ring is arranged at the opening, the guide ring protrudes out of the plane where the opening is located, a guide channel communicated with the installation cavity is formed on the inner side of the guide ring, and an air inlet for air to enter the wind wheel is formed in the outer side of the guide ring. The wind wheel is arranged in the mounting cavity;
and a gap is formed between the guide ring and the side edge of the wind wheel.
Through set up the clearance between water conservancy diversion circle and wind wheel, can avoid the water conservancy diversion circle to influence the wind wheel operation, guarantee the normal air inlet of wind wheel and air-out. Meanwhile, a certain assembly gap between the guide ring and the wind wheel can be ensured, the wind wheel is prevented from scraping the guide ring, and meanwhile, the guide ring can be prevented from influencing the working efficiency of the wind wheel.
Optionally, the gap has a width in the range of 5mm to 7 mm.
Drawings
Fig. 1 is a schematic structural diagram of a fan provided in an embodiment of the present application;
FIG. 2 is a schematic cross-sectional structural view of a wind turbine provided in an embodiment of the present application;
FIG. 3 is an enlarged schematic view of the structure at A in FIG. 2;
FIG. 4 is a schematic structural diagram of a volute structure provided in an embodiment of the present application;
fig. 5 is a partial view of a volute structure provided in an embodiment of the present application.
Description of reference numerals:
10-a fan; 11-a wind wheel; 12-a volute structure; 100-a volute body; 110-a mounting cavity; 120-opening; 130-an air outlet; 200-a flow guide ring; 210-a connecting portion; 220-a flow guide part; 221-a first flow guide section; 222-a second flow guide section; 223-a third flow guide section; 2231-a gap; 230-a flow guide channel; 240-air intake.
Detailed Description
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.
Referring to fig. 1, the present embodiment provides a fan 10, and the fan 10 can be applied to an air duct system of an air conditioner. And this fan 10 is used for inhaling the air current and deriving the air current to the assigned position to realize the purpose of air-out. Wherein, this fan 10 can solve prior art tuber pipe machine noise big, influences user experience's technical problem.
Referring to fig. 1, 2 and 4, the wind turbine 10 includes a volute structure 12 and a wind wheel 11, wherein the wind wheel 11 is installed inside the volute structure 12. And the volute structure 12 is provided with an air inlet 240 located in the axial direction of the wind wheel 11 and an air outlet 130 located in the radial direction of the wind wheel 11, and the wind wheel 11 can intake air from the air inlet 240 and output air from the air outlet 130, so as to achieve the purpose of air output.
Optionally, referring to fig. 4 and 5 in combination, in the present embodiment, the volute structure 12 includes a volute body 100 and a deflector ring 200. The volute body 100 is provided with an installation cavity 110 for installing the wind wheel 11, and the volute body 100 is further provided with an opening 120 communicated with the installation cavity 110. Wherein, when the wind wheel 11 is installed inside the installation cavity 110, the opening 120 is located in the axial direction of the wind wheel 11 and is coaxially arranged with the wind wheel 11. It should be noted that, the volute main body 100 is further provided with an air outlet 130, and the air outlet 130 is located in the radial direction of the wind wheel 11. When the wind wheel 11 sucks wind, the airflow can enter the installation cavity 110, and when the airflow flows to the air outlet 130 in the installation cavity 110, the airflow can be guided out through the air outlet 130 formed in the volute body 100. In addition, the baffle ring 200 is disposed outside the volute body 100, and the baffle ring 200 is disposed at the opening 120, wherein the baffle ring 200 protrudes out of the plane of the opening 120. Further, the inner side of the deflector ring 200 is formed in a deflector channel 230 communicated with the installation cavity 110, and the deflector channel 230 is used for shunting the airflow entering the installation cavity 110, so that the wind pressure can be reduced, and the airflow can be smoothly guided out from the wind outlet 130. Meanwhile, at the air outlet 130, the air flow in the flow guide channel 230 can be mixed into the main air flow of the installation cavity 110, so that the mixed flow and air combing effect is achieved, the wind field can be changed, the tone quality can be optimized, and the technical problem that the noise of the air duct machine is large and the user experience is influenced in the prior art is solved. In addition, the flow guide ring 200 protrudes out of the plane of the opening 120, so that the size of the space of the flow guide channel 230 can be increased, and the flow guide channel 230 is ensured to provide sufficient flow division effect, so as to improve the smoothness of air outlet. Meanwhile, the guide channel 230 can provide effective mixed flow and air combing effects, so that the purposes of changing the wind field and optimizing the sound quality are achieved.
In addition, in this embodiment, the outer side of the deflector ring 200 defines an air inlet 240 for the wind wheel 11 to enter, and the air flow can be guided into the installation cavity 110 through the air inlet 240. It should be noted that, the inner side of the baffle 200 refers to a side of the baffle 200 facing the inside of the installation cavity 110, and the other side is the outer side of the baffle 200. It should be understood that in other embodiments, the outside of the baffle ring 200 may be used to mount other components, and the air inlet 240 is formed by other components, i.e., the air inlet 240 is not directly formed by the baffle ring 200.
Optionally, in the present embodiment, the flow guiding ring 200 includes a connecting portion 210 and a flow guiding portion 220. The connection portion 210 is attached to the outside of the volute body 100, with the connection portion 210 protruding out of the plane of the opening 120. The flow guide part 220 is disposed at a side of the connection part 210 away from the volute body 100, and the flow guide part 220 is bent toward the mounting cavity 110. The bending of the flow guide portion 220 toward the installation cavity 110 means that one side of the flow guide portion 220 away from the connection portion 210 extends toward the inside of the installation cavity 110 in an offset manner, so that one side of the flow guide portion 220 close to the installation cavity 110 can form a flow guide channel 230 between the volute body 100 and the connection portion 210. Meanwhile, the air inlet 240 can be formed through the outside of the guide part 220.
In the present embodiment, the connecting portion 210 and the flow guiding portion 220 are both annular, and the connecting portion 210 is disposed around the opening 120; the outside of the flow guide 220 encloses a circular air inlet 240, i.e., the center line of the opening 120 is collinear with the center line of the air inlet 240. Optionally, the difference between the outer diameter of the connecting portion 210 and the inner diameter of the flow guiding portion 220 is 20mm-50mm, so as to ensure that the space size of the flow guiding channel 230 is set at a proper position, thereby ensuring that the flow guiding channel 230 has a sufficient flow dividing effect, and solving the problem of abnormal sound.
It should be noted that, in this embodiment, a side portion of the flow guiding portion 220 away from the connecting portion 210 extends into the installation cavity 110, so that the flow guiding channel 230 is communicated with the installation cavity 110, and the airflow guided into the installation cavity 110 through the air inlet 240 can be partially shunted to the flow guiding channel 230, thereby achieving the shunting function. The part of the flow guiding part 220 connected to the connecting part 210 protrudes out of the plane of the opening 120, so that part of the flow guiding channel 230 is located outside the installation cavity 110, the flow guiding channel 230 can be prevented from affecting the volume of the installation cavity 110, the installation cavity 110 can be ensured to have enough volume for guiding the airflow, and the air output of the fan 10 is not affected.
Alternatively, the connection portion 210 extends straight from the volute body 100 in a direction away from the volute body 100, wherein the connection portion 210 extends straight to form a cylindrical ring that surrounds the opening 120. Further, in the present embodiment, the height of the connecting portion 210 relative to the plane where the opening 120 is located ranges from 3mm to 6mm, that is, the value of the connecting portion 210 may be 4mm, 5mm, or 6 mm. The height of the connecting portion 210 determines the size of the space of the flow guide channel 230, an excessively small space of the flow guide channel 230 may cause insufficient flow dividing effect of the flow guide channel 230, and an excessively large space of the flow guide channel 230 may cause an insufficiently gentle second flow guide section 222 to generate abnormal sound. The height of the connecting part 210 is set to 3mm-6mm, so that the guide channel 230 can be ensured to have sufficient flow dividing effect, and the problem of abnormal sound can be solved. Optionally, the connecting portion 210 is perpendicular to the plane of the opening 120, so as to facilitate the processing of the connecting portion 210 and reduce the amount of material used for the connecting portion 210. Of course, in other embodiments, the connecting portion 210 may also have an angle with the plane of the opening 120.
Optionally, referring to fig. 3, the flow guide portion 220 includes a first flow guide section 221 and a second flow guide section 222. The first guide section 221 is connected to a side of the connection portion 210 away from the volute body 100; the second flow guiding section 222 is disposed on a side of the first flow guiding section 221 away from the connecting portion 210, and the second flow guiding section 222 is curved towards the installation cavity 110. The curved second flow guiding section 222 makes the inner circumferential wall of the flow guiding channel 230 curved, and makes the circumferential wall of the air inlet 240 curved. The first flow guiding section 221 is disposed at the front end of the second flow guiding section 222 forming the flow guiding channel 230, so as to enlarge the space size of the flow guiding space, further improve the flow dividing effect provided by the flow guiding channel 230, and ensure smooth air outlet of the volute main body 100.
In this embodiment, the side of the second flow guiding section 222 for forming the flow guiding passage 230 is an inner concave surface, that is, the side of the second flow guiding section 222 facing the air inlet 240 is bulged, so that the side of the second flow guiding section 222 for forming the air inlet 240 is an outer convex surface. The second flow guiding section 222 forms an inner concave surface to form the flow guiding channel 230, so that the space size of the flow guiding channel 230 can be further enlarged, the flow dividing effect can be further improved, and the smoothness of air outlet is ensured. Moreover, the air inlet 240 is formed through the outer convex surface, so that the air flow guided in through the air inlet 240 can be accurately guided to the wind wheel 11, and the wind wheel 11 can be stably discharged.
It should be noted that, in this embodiment, the first flow guiding section 221 extends straight toward the center line of the opening 120, that is, in other words, the first flow guiding section 221 extends straight toward the center line of the air inlet 240, that is, the outer ring and the inner ring of the annular first flow guiding section 221 are located on the same plane. Optionally, the length of the first flow guiding section 221 along the extending direction thereof ranges from 1mm to 2mm, so as to ensure that the arc shape formed by the second flow guiding section 222 is large enough as much as possible, and further provide a better flow guiding effect through the second flow guiding section 222. In other words, the difference between the outer radius of the first inducer 221 and the inner radius of the first inducer 221 is in the range of 1mm to 2 mm. Of course, the height of the first flow guiding section 221 along the extending direction thereof can also be explained as follows: a side of the first flow guiding section 221, which is far from the installation cavity 110, forms an annular plane, and an outer radius of the annular plane has a difference with an inner radius of the annular plane, where the difference may refer to a height of the first flow guiding section 221 along an extending direction thereof. Optionally, in this embodiment, the first flow guiding section 221 is perpendicular to the axis of the connecting portion 210, so as to reduce the processing difficulty of the first flow guiding section 221 and reduce the manufacturing cost of the first flow guiding section 221. It should be appreciated that in other embodiments, the connection portion 210 and the first flow guide section 221 may have an included angle.
Further, in the present embodiment, the flow guiding portion 220 further includes a third flow guiding section 223, the third flow guiding section 223 is disposed on a side of the second flow guiding section 222 away from the first flow guiding section 221, and the third flow guiding section 223 extends straight towards the inside of the installation cavity 110. The extending direction of the third guide section 223 is the same as the axial direction of the wind wheel 11, so that a cylindrical wind guiding structure is formed at the rear end of the second guide section 222. Through set up the third water conservancy diversion section 223 of straight extension in the rear end of second water conservancy diversion section 222, can be convenient for the air inlet of air intake 240 for can directly get into to wind wheel 11 after the air inlet of air intake 240, avoid the air inlet chaotic, with the normal operation of guaranteeing to install the inside wind wheel 11 of installation cavity 110.
Optionally, in this embodiment, the length of the third flow guiding section 223 along the extending direction thereof ranges from 1mm to 2mm, so as to ensure that the arc shape formed by the second flow guiding section 222 is large enough as possible, and further, a better flow guiding effect can be provided by the second flow guiding section 222. In other words, the third guide section 223 forms a cylinder having a height ranging from 1mm to 2 mm. Of course, the height of the third flow guiding section 223 along the extending direction thereof can also be explained as follows: the third guide section 223 has a cylindrical arc-shaped surface on a side close to the air inlet 240, and an extension length of the plane along an axial direction of the plane may refer to a height of the third guide section 223 along the extension direction of the plane. In addition, optionally, in this embodiment, the extending direction of the third flow guiding section 223 is parallel to the axis of the wind wheel 11, so as to reduce the processing difficulty of the third flow guiding section 223 and reduce the manufacturing cost.
Further, in this embodiment, a gap 2231 is provided between the flow guiding ring 200 and the wind wheel 11, that is, a gap 2231 is provided between one side of the third flow guiding section 223, which is far away from the second flow guiding section 222, and the outer side of the wind wheel 11, so that the gap 2231 is provided between the flow guiding ring 200 and the wind wheel 11, which can prevent the flow guiding ring 200 from influencing the operation of the wind wheel 11, and ensure the normal air intake and air outtake of the wind wheel 11. Meanwhile, a certain assembly gap can be ensured between the guide ring 200 and the wind wheel 11, the wind wheel 11 is prevented from scraping the guide ring 200, and meanwhile, the guide ring 200 can be prevented from influencing the working efficiency of the wind wheel 11.
Optionally, in this embodiment, the width of the gap 2231 ranges from 5mm to 7 mm. By setting the width of the gap 2231 to 5mm-7mm, the working efficiency of the wind wheel 11 can be ensured, and the guide ring 200 is prevented from scraping the wind wheel 11, and meanwhile, the size of the space of the guide channel 230 formed by the guide ring 200 is ensured, and the guide channel 230 is ensured to have an effective flow dividing effect, so that the volute main body 100 can smoothly discharge air.
In summary, the volute structure 12 and the fan 10 provided in this embodiment can form the flow guiding channel 230 through the inner side of the flow guiding ring 200, and the flow guiding channel 230 is communicated with the installation cavity 110, when the wind wheel 11 is installed inside the installation cavity 110, and after the wind enters from the wind inlet 240, a part of the airflow flows into the flow guiding channel 230 for guiding, and at this time, the flow guiding channel 230 provides a shunting effect, which can reduce the wind pressure, so that the wind outlet is smoother. When the airflow in the diversion channel 230 flows to the air outlet 130 of the volute structure 12 in the diversion channel 230, part of the airflow enters the air outlet 130 to be mixed with the main airflow, so as to play a role of mixed flow and air combing, thereby changing an air field and optimizing the sound quality. The technical problem that the noise of the air conditioner is high and user experience is influenced in the prior art can be solved. Moreover, the connection portion 210 is disposed outside the plane of the opening 120 and the first flow guiding section 221 is disposed, so that the size of the space of the flow guiding channel 230 can be increased as much as possible, and the flow dividing capability of the flow guiding channel 230 can be further improved. In addition, a gap 2231 is arranged between the guide ring 200 and the wind wheel 11, so that the guide ring 200 is prevented from influencing the operation of the wind wheel 11, and the normal air inlet and outlet of the wind wheel 11 are ensured. Meanwhile, a certain assembly gap can be ensured between the guide ring 200 and the wind wheel 11, the wind wheel 11 is prevented from scraping the guide ring 200, and meanwhile, the guide ring 200 can be prevented from influencing the working efficiency of the wind wheel 11.
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 (12)
1. A volute structure is characterized by comprising a volute main body and a flow guide ring;
the volute body is internally provided with an installation cavity for installing a wind wheel, and the volute body is also provided with an opening communicated with the installation cavity;
the guide ring is arranged at the opening, protrudes out of the plane where the opening is located, and a guide channel communicated with the mounting cavity is formed on the inner side of the guide ring.
2. The volute structure of claim 1, wherein the deflector ring comprises a connection portion and a deflector portion;
the connecting part is connected to the outer side of the volute main body and protrudes out of the plane of the opening;
the flow guide portion is arranged on one side, away from the volute body, of the connecting portion, faces towards the installation cavity in a bent mode, and the inner side of the flow guide portion and the connecting portion jointly form the flow guide channel.
3. The volute structure of claim 2, wherein the flow guide portion comprises a first flow guide section and a second flow guide section, the first flow guide section is connected to the connecting portion, the second flow guide section is disposed on a side of the first flow guide section away from the connecting portion, the second flow guide section is curved towards the installation cavity to form an arc, and an inner side of the first flow guide section, an inner side of the second flow guide section and an inner side of the connecting portion together form the flow guide channel.
4. The volute structure of claim 3, wherein the side of the second flow guide segment that forms the flow guide channel is an inner concave surface.
5. The volute structure of claim 3, wherein the flow guide portion further comprises a third flow guide section disposed on a side of the second flow guide section remote from the first flow guide section and extending straight toward the interior of the mounting cavity.
6. The volute structure of claim 5, wherein the third flow guide section has a length along its extent in the range of 1mm to 2 mm.
7. The volute structure of claim 3, wherein the first flow guide segment extends straight toward a centerline of the opening.
8. The volute structure of claim 7, wherein the first flow guide section has a length along its extent in the range of 1mm to 2 mm.
9. The volute structure of claim 2, wherein the height of the connection relative to a plane of the opening is between 3mm and 6 mm.
10. The volute structure of claim 2, wherein the connecting portion and the flow-directing portion are each annular;
the difference range of the outer ring diameter of the connecting part and the inner ring diameter of the flow guide part is 20-50 mm.
11. A wind turbine comprising a wind wheel mounted inside the mounting cavity and a volute structure according to any one of claims 1-10;
and a gap is formed between the guide ring and the side edge of the wind wheel.
12. The fan as claimed in claim 11, wherein the gap has a width in the range of 5mm to 7 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020619928.9U CN211924536U (en) | 2020-04-22 | 2020-04-22 | Volute structure and fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020619928.9U CN211924536U (en) | 2020-04-22 | 2020-04-22 | Volute structure and fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211924536U true CN211924536U (en) | 2020-11-13 |
Family
ID=73329267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020619928.9U Active CN211924536U (en) | 2020-04-22 | 2020-04-22 | Volute structure and fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211924536U (en) |
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2020
- 2020-04-22 CN CN202020619928.9U patent/CN211924536U/en active Active
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Effective date of registration: 20221009 Address after: 315191 No. 1166 Mingguang North Road, Jiangshan Town, Ningbo, Zhejiang, Yinzhou District Patentee after: NINGBO AUX ELECTRIC Co.,Ltd. Patentee after: AUX AIR CONDITIONING LIMITED BY SHARE Ltd. Address before: 315000 No.1166 Mingguang North Road, Jiangshan Town, Yinzhou District, Ningbo City, Zhejiang Province Patentee before: NINGBO AUX ELECTRIC Co.,Ltd. Patentee before: Ningbo Oxfam intelligent commercial air conditioning manufacturing Co.,Ltd. |