CN215672884U - Mixed flow fan, air conditioning equipment and household appliance - Google Patents
Mixed flow fan, air conditioning equipment and household appliance Download PDFInfo
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- CN215672884U CN215672884U CN202122136717.7U CN202122136717U CN215672884U CN 215672884 U CN215672884 U CN 215672884U CN 202122136717 U CN202122136717 U CN 202122136717U CN 215672884 U CN215672884 U CN 215672884U
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 12
- 238000007789 sealing Methods 0.000 claims description 6
- 239000000428 dust Substances 0.000 abstract description 16
- 238000009825 accumulation Methods 0.000 abstract 1
- 239000003344 environmental pollutant Substances 0.000 description 6
- 231100000719 pollutant Toxicity 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 210000001624 hip Anatomy 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model provides a mixed flow fan, air conditioning equipment and household appliances. The mixed flow fan comprises a movable blade and a gas collecting hood matched with the movable blade, wherein a first fluctuation tooth structure is formed at a gas inlet part matched with the movable blade on the gas collecting hood, and the first fluctuation tooth structure protrudes towards the gas inlet direction. By adopting the technical scheme of the utility model, the problem that the dynamic balance quality of the fan blade is influenced due to accumulation of dust and oil dirt is avoided, the running efficiency of the fan is ensured, and the problems of noise and poor tone quality due to reduction of the dynamic balance quality of the fan blade can be avoided. On the other hand, the first lifting tooth structure can also break up eddy current, so that the running noise of the movable blade is reduced.
Description
Technical Field
The utility model relates to the technical field of fans, in particular to a mixed flow fan, air conditioning equipment and a household appliance.
Background
With the acceptance of bladeless fans, dust collectors and other products, mixed flow fans as core components are increasingly applied to various fields of the household appliance industry, including air conditioning products.
In the prior art, the clearance dust and oil dirt between the movable blade and the gas collecting hood or other adjacent structures are easy to deposit, and the mixed flow fan can be abnormally operated in serious cases. Particularly, after the mixed flow fan stops running, the mixed flow fan is not started for a long time, pollutants are hard to remove after solidification, and therefore the mixed flow fan is abnormal in starting or abnormal in running, dynamic balance quality of the fan blades is reduced, the fan blades run to generate vibration, a flow field in the fan is changed, the running efficiency of the fan is reduced, vibration is generated, even noise is generated, the tone quality is poor, and the normal running of the mixed flow fan is affected.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a mixed flow fan, air conditioning equipment and a household appliance, and aims to solve the technical problem that the dynamic balance quality of a fan blade is reduced due to the fact that dust and oil dirt are easily deposited in a gap between a movable blade and a gas collecting hood of the mixed flow fan in the prior art.
The embodiment of the utility model provides a mixed flow fan, which comprises a movable blade and a gas collecting hood matched with the movable blade, wherein a first undulating tooth structure is formed on the gas collecting hood at a gas inlet part matched with the movable blade, and the first undulating tooth structure protrudes towards the gas inlet direction.
In one embodiment, each tooth of the first set of lift teeth is shaped as a triangular tooth structure.
In one embodiment, each tooth of the first lift tooth structure is in the shape of a trapezoidal tooth structure and/or a square tooth structure.
In one embodiment, each tooth of the first undulating tooth structure is shaped as an arcuate tooth structure and/or a semi-circular tooth structure.
In one embodiment, each tooth of the first set of lift teeth is shaped as a shaped tooth structure.
In one embodiment, the air intake location is located circumferentially inward of an air inlet of the bucket.
In one embodiment, the air intake location is located circumferentially outward of an air inlet of the bucket.
In one embodiment, the gas collecting channel is further formed with a sealing channel structure adapted to the contour of the radial outer side of the rotor blade, the sealing channel structure being in clearance fit with the radial outer side of the blade body of the rotor blade.
The utility model also provides air conditioning equipment which comprises the mixed flow fan.
The utility model also provides a household appliance which comprises the mixed flow fan.
In the above embodiment, due to the first undulation tooth structure formed on the air inlet part, when the mixed flow fan operates, pollutants can flow to the tail end of the first undulation tooth structure along the wall surface of the air inlet part, and the tail end of the first undulation tooth structure has small adhesive force, is easy to fall off and is not easy to accumulate on the gas collecting hood. Even when the mixed flow fan stops operating, a little of residual pollutants are not easy to gather under the action of gravity due to the special configuration of the first lifting tooth structure. Thereby avoided dust, greasy dirt to pile up the problem that the influence fan blade dynamic balance quality that leads to, guaranteed fan operating efficiency, can avoid because noise, the poor problem of tone quality that the fan blade dynamic balance quality descends and lead to. On the other hand, the first lifting tooth structure can also break up eddy current, so that the running noise of the movable blade is reduced.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:
FIG. 1 is a schematic cross-sectional view of a mixed flow fan according to the present invention and a partially enlarged view thereof;
fig. 2 is a schematic diagram of a gas-collecting hood of the mixed-flow fan of fig. 1 in two viewing angles.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the following embodiments and accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention.
The blade dynamic balance device aims at the technical problem that in the prior art, dust and oil stains are easily deposited in a gap between a movable blade and a gas collecting hood, so that the dynamic balance quality of the blade is reduced. In the technical solution of the present invention, as shown in fig. 1, the mixed flow fan includes a movable blade 10 and a gas collecting channel 20 engaged with the movable blade 10, a first undulation tooth structure 211 is formed on the gas collecting channel 20 at an air inlet portion 21 engaged with the movable blade 10, and the first undulation tooth structure 211 protrudes toward an air inlet direction.
Under the condition that the first floating tooth structure 211 is not arranged, after the air inlet flow is mixed with a lot of dust or even oil stain in the environment during the working process and is adhered to the surface of the air collecting hood 20, the air inlet flow is high-speed gas, and finally the dust and the oil stain are accumulated at the tail end of the edge of the air collecting hood 20, the air inlet part 21 is opposite to the air inlet side edge of the movable blade 10, and when the mixed flow fan stops running, the oil stain is accumulated at the lowest end along with the gravity direction, so that the gap is blocked.
By applying the technical scheme of the utility model, due to the first undulation tooth structure 211 formed on the air inlet part 21, pollutants can flow to the tail end of the first undulation tooth structure 211 along the wall surface of the air inlet part 21 when the mixed flow fan runs, and due to the fact that the adhesion force of the tail end of the first undulation tooth structure 211 is small, the pollutants are easy to fall off along the air inlet direction and are not easy to accumulate on the gas collecting hood 20. Even when the mixed flow fan stops operating, a little residual pollutants are not easy to gather under the action of gravity due to the special configuration of the first lodging tooth structure 211. Thereby avoided dust, greasy dirt to pile up the problem that the influence fan blade dynamic balance quality that leads to, guaranteed fan operating efficiency, can avoid because noise, the poor problem of tone quality that the fan blade dynamic balance quality descends and lead to. On the other hand, the first lift tooth structure 211 can break up eddy currents, so that the operation noise of the movable blade 10 is reduced.
As an alternative implementation, in the solution of the present embodiment, as shown in fig. 1 and 2, each tooth of the first undulating tooth structure 211 has a triangular tooth shape. The adhesion force of the tail end of the triangular convex tooth structure is very small, and dust and oil stains can easily fall off.
As another alternative, each tooth of the first undulating tooth structure 211 has a trapezoidal tooth shape. The trapezoidal convex tooth structure has good effect of enabling dust and oil dirt to fall off, and the smaller the size of the upper bottom of the trapezoidal convex tooth structure is, the more beneficial to falling off of the dust and oil dirt is. Alternatively, it is possible that the first relief tooth structure 211 is a square-shaped tooth structure.
As other alternative embodiments, it is also possible that each tooth of the first undulating tooth structure 211 has an arc-shaped tooth structure or a semicircular tooth structure, and the vertex of the arc-shaped tooth structure or the semicircular tooth structure has a good effect of shedding dust and oil stains.
Furthermore, as another alternative embodiment, each tooth of the first undulating tooth structure 211 is shaped as a shaped tooth structure. The shaped tooth structure here may be a non-standard variation of the shape of the teeth in the above-described embodiment, similar to changing the two waists of a triangular tooth structure to an arc shape, or changing the two waists of a trapezoidal tooth structure to an arc shape. Besides, the special-shaped tooth structure with other shape structures is also possible.
As shown in fig. 1, in the present embodiment, the air inlet portion 21 is located on the circumferential inner side of the air inlet of the movable blade 10, and this embodiment may be directed to an embodiment in which dust and oil dirt are easily accumulated on the circumferential inner side of the air inlet of the movable blade 10.
As another embodiment not shown in the drawings, the air intake portion 21 may be located outside the air inlet of the movable blade 10 in the circumferential direction, and this embodiment may be directed to an embodiment in which dust and oil dirt are likely to accumulate outside the air inlet of the movable blade 10 in the circumferential direction.
As shown in fig. 1 and 2, as a more preferred embodiment, the gas collecting channel 20 is further formed with a seal cover structure 22 adapted to the contour of the radial outer side of the movable blade 10, and the seal cover structure 22 is in clearance fit with the radial outer side of the blade body of the movable blade 10. Compared with the prior art, the technical solution of the present embodiment is that the seal cover structure 22 formed on the gas collecting cover 20 is adapted to the profile of the radial outer side of the movable blade 10, and the gap between the gas collecting cover 20 and the movable blade 10 can be reduced, so that the leakage of the airflow from the high-pressure side to the low-pressure side of the movable blade 10 can be reduced to a great extent, the airflow leakage condition of the mixed flow fan is improved, and the fan operation efficiency is further improved. In addition, the sealing cover structure 22 has a certain sound insulation effect, and reduces the noise of the fan.
Compared with the traditional technical scheme, the technical scheme of the utility model has the advantages that the airflow backflow leakage is more difficult, the airflow needs to bypass the gap of the whole slender structure from the high-pressure area of the movable blade 10 and flow back into the movable blade 10 again, and the airflow leakage resistance is increased.
It should be noted that the clearance between the seal shroud structure 22 and the radially outer side of the bucket 10 is as small as possible while ensuring that manufacturing is feasible and that the equipment is reliable. As an alternative embodiment, the sealing cap structure 22 may also be omitted.
Preferably, a gap exists between the first lifting tooth structure 211 and the movable blade 10, so that the normal operation of the fan blade is ensured. In the above embodiment, since the bucket 10 itself is operated, the centrifugal force acts to reduce the residual contaminants.
It should be noted that the structure of each tooth of the first lift tooth structure 211 may be different or partially the same. It should be further noted that the tooth shape, tooth height, mutual tooth shape difference and the like of the convex tooth structure can be specifically and specifically designed according to the optimization requirement of the running noise of the fan. The term "difference in tooth form from one another" means a difference between the respective teeth.
The utility model also provides air conditioning equipment which comprises the mixed flow fan, and the mixed flow equipment is adopted, so that the airflow processing capacity of the air conditioning equipment is better, and the working efficiency of the air conditioning equipment is further improved.
Besides air conditioning equipment, the mixed flow fan can also be applied to fans for gas transportation. In fact, in the field of rotating machinery, similar structures can also be applied to transportation of water, oil, gas-liquid mixtures and the like, and the technical scheme can also solve the general problem in the aspect. Therefore, the utility model also provides a household appliance which comprises the mixed flow fan. The household appliances may include a dehumidifier, an electric fan, a fresh air fan, or the like.
According to the technical scheme, the problem that dust and oil are easy to deposit is solved, the normal operation of the fan is guaranteed, the long-term dynamic balance operation quality of the mixed flow fan is guaranteed, and the energy consumption required by the operation of equipment is reduced. The air flow leakage of the fan is reduced, the operation efficiency of the fan is improved, and the pressure and the air quantity are improved. In addition, let the mixed flow fan reveal that the air current backward flow keeps unanimous with the air inlet direction, reduces and produces the vortex risk, improves the air inlet condition, and the certain degree reduces the noise.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and variations of the embodiment of the present invention may occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The mixed flow fan comprises a movable blade (10) and a gas collecting hood (20) matched with the movable blade (10), and is characterized in that a first undulating tooth structure (211) is formed on the gas collecting hood (20) at a gas inlet part (21) matched with the movable blade (10), and the first undulating tooth structure (211) protrudes towards the gas inlet direction.
2. The mixed flow fan of claim 1 wherein each tooth of the first undulating tooth structure (211) is in the shape of a triangular lobe structure.
3. The mixed flow fan of claim 1, wherein each tooth of the first undulating tooth structure (211) is in the shape of a trapezoidal tooth structure and/or a square tooth structure.
4. The mixed flow fan of claim 1 wherein each tooth of the first undulating tooth structure (211) is in the shape of an arcuate tooth structure and/or a semi-circular tooth structure.
5. The mixed flow fan of claim 1 wherein each tooth of the first undulating tooth structure (211) is shaped as a profiled tooth structure.
6. Mixed flow fan according to claim 1, characterised in that the air inlet location (21) is located circumferentially inside the air inlet of the blade (10).
7. Mixed flow fan according to claim 1, characterised in that the air inlet portion (21) is located circumferentially outside the air inlet of the blade (10).
8. The mixed flow fan according to claim 1, characterized in that the gas collecting hood (20) is further formed with a sealing hood structure (22) adapted to the profile of the radial outer side of the movable blade (10), and the sealing hood structure (22) is in clearance fit with the radial outer side of the blade body of the movable blade (10).
9. An air conditioning apparatus comprising a mixed flow fan, wherein the mixed flow fan is as claimed in any one of claims 1 to 8.
10. A domestic appliance comprising a mixed flow fan, wherein the mixed flow fan is as claimed in any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122136717.7U CN215672884U (en) | 2021-09-06 | 2021-09-06 | Mixed flow fan, air conditioning equipment and household appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122136717.7U CN215672884U (en) | 2021-09-06 | 2021-09-06 | Mixed flow fan, air conditioning equipment and household appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215672884U true CN215672884U (en) | 2022-01-28 |
Family
ID=79959841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122136717.7U Active CN215672884U (en) | 2021-09-06 | 2021-09-06 | Mixed flow fan, air conditioning equipment and household appliance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215672884U (en) |
-
2021
- 2021-09-06 CN CN202122136717.7U patent/CN215672884U/en active Active
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