CN113790174A - Flow equalizing plate structure, flow equalizing and resistance reducing device, centrifugal fan structure and air conditioning system - Google Patents
Flow equalizing plate structure, flow equalizing and resistance reducing device, centrifugal fan structure and air conditioning system Download PDFInfo
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 8
- 238000009792 diffusion process Methods 0.000 description 43
- 230000000694 effects Effects 0.000 description 12
- 238000009434 installation Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000006467 substitution reaction Methods 0.000 description 2
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
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Abstract
本发明提供了一种均流板结构、均流降阻装置、离心风机结构及空调系统，解决现有技术中离心风机吹向换热器的气流，存在离流量分布不均、风速较大的问题。本发明提供一种均流降阻装置，首先通过第一扩压段降低离心风机送风速度，第一扩压段上设置导流板，对流量较大的区域进行初步均流；第一扩压段终端连接第二扩压段，第二扩压段中安装均流板结构，均流板结构正对第一扩压段的出口，对于离心风机蜗壳送风进行均流，降低风速，减少局部损失。
The present invention provides an equalizing plate structure, an equalizing and resistance reducing device, a centrifugal fan structure and an air-conditioning system, which solves the problem of the airflow blown by the centrifugal fan to the heat exchanger in the prior art. question. The invention provides a device for equalizing flow and reducing resistance. First, the air supply speed of a centrifugal fan is reduced through a first diffuser section, and a deflector is arranged on the first diffuser section to perform preliminary flow equalization in an area with a large flow rate; The end of the pressure section is connected to the second diffuser section, and the second diffuser section is equipped with a flow equalizing plate structure, which is facing the outlet of the first diffuser section. Reduce local losses.
Description
Technical Field
The invention relates to the technical field of fans, in particular to a flow equalizing plate structure, a flow equalizing and resistance reducing device, a centrifugal fan structure and an air conditioning system.
Background
In actual operation of the centrifugal fan, the gas is influenced by the centrifugal force and has a radial component velocity, see fig. 1, which is such that the flow at the outlet of the volute increases gradually from the lower edge to the upper edge. In addition, because the fan blades are solid, the flow is gradually increased from the front disk of the fan blades to the middle disk, and the flow distribution at the outlet of the volute of the centrifugal fan is uneven under the two conditions.
After the gas passes through the volute, a large part of dynamic pressure is converted into static pressure, but sometimes the wind speed at the outlet of the volute is still high. Especially in the narrow and small environment in space, the installation space of each component is limited, so that the outlet of the centrifugal fan component is close to other components. For example, the surface cooler is installed on the outlet side of the fan, the flow distribution is uneven when the surface cooler is reached, the air speed is large, the effective heat exchange area of the surface cooler is reduced, and the ideal heat exchange effect is difficult to achieve.
Disclosure of Invention
The invention aims to provide a flow equalizing plate structure, a flow equalizing and resistance reducing device, a centrifugal fan structure and an air conditioning system, and solves the problems that in the prior art, the centrifugal fan blows airflow to a heat exchanger, the centrifugal flow is not uniformly distributed, and the air speed is high. The technical effects that can be produced by the preferred technical scheme in the technical schemes provided by the invention are described in detail in the following.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides a flow equalizing plate structure, which comprises a flow equalizing main body part and an edge area part, wherein the edge area part is formed on the edge side of the flow equalizing main body part, flow equalizing holes are distributed on the flow equalizing main body part, and the open area of the unit area of the edge area part is larger than that of the unit area of the flow equalizing main body part; the flow equalizing plate structure is a flat plate structure, or the flow equalizing plate structure is a folded plate structure, and an included angle exists between the flow equalizing main body part and the edge area part.
Furthermore, one side of the current equalizing main body part is an exposed side, and the exposed side forms the edge of the current equalizing plate structure; when the flow equalizing plate structure is in an installation state, the exposed side edge is matched with the inner side face of the wind channel with concentrated wind power.
Further, from the exposed side edge to the direction far away from the exposed side edge, the area of the flow equalizing hole gradually increases.
Furthermore, the other sides of the flow equalizing main body part except the exposed side are respectively connected with the corresponding edge region parts, and two adjacent edge region parts in the circumferential direction are connected.
Further, the included angle between the flow equalizing main body part and the edge area part is an obtuse angle, and when the flow equalizing plate structure is in an installation state, the free end of the edge area part extends obliquely in the direction opposite to the direction of airflow flowing through the flow equalizing resistance reducing device.
Furthermore, the included angle between the flow equalizing main body part and the edge region part ranges from 100 degrees to 110 degrees.
Further, the edge region part is of a frame structure.
Furthermore, more than one frame-shaped hole is formed in each edge area part, and the frame-shaped holes in the current-equalizing plate structure are distributed along the circumferential direction of the current-equalizing plate structure.
The invention provides a flow equalizing and resistance reducing device, wherein a diffusion flow guide cavity is formed inside the flow equalizing and resistance reducing device, the flow equalizing and resistance reducing device comprises a flow equalizing plate structure, and the flow equalizing plate structure is arranged in the diffusion flow guide cavity.
Furthermore, the flow equalizing and resistance reducing device further comprises a flow guide plate structure, the flow guide plate structure and the flow equalizing plate structure are sequentially arranged in the diffusion flow guide cavity along the direction of the air flow flowing through the flow equalizing and resistance reducing device, and the flow guide plate structure is used for guiding the collected air flow to the two sides.
Furthermore, one of the inner side surfaces of the flow equalizing and resistance reducing device is a wind power concentration inner side surface, and the guide plate structure is arranged on the wind power concentration inner side surface.
Furthermore, the central line of the airflow on the airflow concentration surface along the direction of the airflow flowing through the flow equalizing and resistance reducing device is a reference line, the guide plate structure comprises a plurality of guide plates, the guide plates are distributed on the airflow concentration surface at intervals along the direction perpendicular to the reference line, and the distance between the guide plates and the reference line is gradually increased from the air inlet side to the air outlet side of the flow equalizing and resistance reducing device.
Furthermore, the guide plates are symmetrically distributed by taking the reference line as a symmetry line, the guide plates positioned on the same side of the reference line are arranged in parallel, and the guide plates are parallel to the inner side surfaces of the corresponding sides of the flow equalizing and resistance reducing devices.
Furthermore, the flow equalizing and resistance reducing device comprises a first diffusion section and a second diffusion section connected with the first diffusion section, the cross-sectional area of the first diffusion section and the cross-sectional area of the second diffusion section are increased along the direction of airflow flowing through the flow equalizing and resistance reducing device, and the flow equalizing plate structure and the flow guide plate structure are respectively arranged in the first diffusion section and the second diffusion section.
Furthermore, the first diffuser section comprises a third side plate and a fourth side plate, the third side plate and the fourth side plate are arranged oppositely, and the third side plate and the fourth side plate are inclined towards the direction far away from the center of the first diffuser section from the direction from the air inlet side to the air outlet side of the flow equalizing and flow reducing device.
Furthermore, the included angle between the plane perpendicular to the flow guide channel and the obtuse angle of the third side plate is 95-100 degrees; the obtuse included angle between the plane vertical to the flow guide channel and the fourth side plate is 95-100 degrees.
Further, four curb plates of second diffusion section all incline to set up, the second diffusion section for first diffusion section is loudspeaker flaring structure.
The invention provides a centrifugal fan structure which comprises a centrifugal fan and a flow equalizing and resistance reducing device, wherein the flow equalizing and resistance reducing device is connected with the centrifugal fan and is used for being connected with a heat exchanger.
The invention provides an air conditioning system which comprises the current-equalizing and resistance-reducing device.
The invention provides a flow equalizing plate structure, which comprises a flow equalizing main body part and an edge area part, wherein when the flow equalizing plate structure is arranged in a diffusion cavity, the air flow flowing through the edge area part is less, so that the open area of the unit area of the edge area part is designed to be larger than that of the flow equalizing main body part, the air flow can conveniently pass through the edge area part, and the flow equalizing effect is achieved; when the structure of flow equalizing plate is the flat structure, the air current blows to the main part rear portion air current that flow equalizes and can flow to both sides, forms the vortex and to influencing great from marginal region portion air-out, and has the contained angle between main part and the marginal region portion that flow equalizes in the design, reduces the vortex to the influence from marginal region portion air-out to a certain extent.
The preferred technical scheme of the invention can at least produce the following technical effects:
one side of the current equalizing main body part is an exposed side, and the exposed side forms the edge of the current equalizing plate structure; when the flow equalizing plate structure is in an installation state, the exposed side edge is matched with the inner side surface with concentrated wind force in the air duct (the pressure expansion cavity) so as to realize better flow equalizing effect;
the flow equalizing holes in the flow equalizing main body part are arranged in the direction from the exposed side edge to the direction far away from the exposed side edge, and the area of the flow equalizing holes gradually increases, so that a better flow equalizing effect is realized;
the invention provides a flow equalizing and resistance reducing device, which is characterized in that firstly, the air supply speed of a centrifugal fan is reduced through a first diffusion section, a guide plate is arranged on the first diffusion section, and primary flow equalizing is carried out on an area with larger flow; the first diffusion section terminal is connected with the second diffusion section, the flow equalizing plate structure is installed in the second diffusion section, the flow equalizing plate structure is over against the outlet of the first diffusion section, air supply of the centrifugal fan volute is equalized, the air speed is reduced, and local loss is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a current-sharing and current-reducing device provided in an embodiment of the present invention in a use state;
FIG. 2 is a schematic top view of a current sharing and current reducing device according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a current-sharing and current-reducing apparatus according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a current equalizing plate structure according to an embodiment of the present invention;
FIG. 5 is a schematic top view of a current equalizing plate structure according to an embodiment of the present invention;
fig. 6 is a schematic right-view diagram of a current equalizing plate structure according to an embodiment of the present invention;
fig. 7 is a schematic structural view of a first diffuser section and a baffle according to an embodiment of the present invention;
fig. 8 is a schematic view of a distribution of baffles over a first diffuser section provided by an embodiment of the present invention.
FIG. 1-flow equalization plate structure; 11-a current equalizing main body portion; 12-edge zone portion; 13-flow equalizing hole; 14-exposing the side edges; 15-frame-shaped holes; 2-a flow guide plate; 3-a first diffusion section; 301-a first side panel; 302-a second side panel; 303-a third side panel; 304-a fourth side panel; 4-a second diffusion section; 5-centrifugal fan; 6-surface cooler; 7-flexible connection device.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Example 1:
the invention provides a flow equalizing plate structure, which comprises a flow equalizing main body part 11 and an edge area part 12, wherein the edge area part 12 is formed at the edge side of the flow equalizing main body part 11, flow equalizing holes 13 are distributed on the flow equalizing main body part 11, and when the flow equalizing plate structure is installed in a diffusion cavity, the airflow flowing through the edge area part 12 is little, so the open area of the unit area of the edge area part 12 is designed to be larger than that of the unit area of the flow equalizing main body part 11, and the airflow can conveniently pass through the edge area part 12; the current equalizing plate structure 1 is a flat plate structure, or the current equalizing plate structure 1 is a folded plate structure and an included angle exists between the current equalizing main body part 11 and the edge area part 12. Referring to fig. 4, the flow equalization plate structure 1 is illustrated as a folded plate structure.
As an alternative embodiment, the current-equalizing main body portion 11 has one exposed side 14, and the exposed side 14 forms an edge of the current-equalizing plate structure 1; when the flow straightener structure is in the installed state, the exposed side 14 is engaged with the inner side of the wind channel (diffusion chamber) where the wind force is concentrated. Referring to fig. 3, the exposed side edge 14 is illustrated. Referring to fig. 1, in actual operation of the centrifugal fan, the gas is influenced by the centrifugal force and has a radial component velocity, and the radial component velocity causes the flow at the outlet of the volute to gradually increase from the lower edge to the upper edge. At this time, if the current equalizing plate is installed in the pressure expanding cavity, the exposed side 14 of the current equalizing main body 11 needs to be matched with the top cavity surface (the inner side surface where wind is concentrated) of the pressure expanding cavity, so as to achieve a better current equalizing effect.
As an optional implementation manner, the area of the flow equalizing hole 13 corresponding to the position where the airflow is large is small, and the area of the flow equalizing hole 13 corresponding to the position where the airflow is small is large, so that the flow equalizing effect can be better achieved, meanwhile, in combination with the working characteristics of the centrifugal fan 5, the flow equalizing hole 13 on the flow equalizing main body portion 11 is set to be in the direction from the exposed side 14 to the position far away from the exposed side 14, and the area of the flow equalizing hole 13 is gradually increased, so that the better flow equalizing effect is achieved. Of course, the following may also be provided: the area of the flow equalizing holes 13 gradually increases from the middle position of the exposed side 14 to the middle position far away from the exposed side 14, that is, referring to fig. 4, the area of the flow equalizing holes 13 in the same row in the horizontal direction may be different. In addition, the flow equalizing holes 13 are not only round holes, but also quadrilateral holes or hexagonal holes.
As an alternative embodiment, referring to fig. 4, there is a rim area portion 12, and a side of the rim area portion 12 close to the flow equalizing main body portion 11 is provided with more than one row of flow equalizing holes 13, and at this time, the flow equalizing holes on the rim area portion 12 also need to satisfy the feature that "the flow equalizing holes 13 are arranged in a direction from the exposed side edge 14 to a direction away from the exposed side edge 14, and the area size of the flow equalizing holes 13 gradually increases". Of course, the flow equalizing hole 13 may not be provided in the edge area portion 12.
Regarding the specific structure of the flow equalizing plate structure, the following can be mentioned: the other sides of the flow equalizing main body 11 except the exposed side 14 are respectively connected with the corresponding edge region 12, and two adjacent edge region 12 in the circumferential direction are connected. Referring to fig. 4, the flow equalizing main body portion 11 is illustrated as a square, and edge region portions 12 are provided on three side edges of the flow equalizing main body portion 11. The angle between the flow equalizing body 11 and the edge region 12 is obtuse, and when the flow equalizing plate structure 1 is in the installed state, the free end of the edge region 12 extends obliquely in the direction opposite to the direction of the air flow flowing through the flow equalizing and flow reducing device. Preferably, the included angle β between the current equalizing main body portion 11 and the edge region portion 12 ranges from 100 ° to 110 °. When the included angle between the flow equalizing main body part 11 and the edge area part 12 is close to 90 degrees, when the air inlet of the flow equalizing plate structure facing the diffusion cavity is placed into the diffusion cavity, the occupation ratio of the edge area part 12 on the cross section of the diffusion cavity is small, and the edge area part 12 is difficult to achieve the effect of setting the edge area part; when the included angle between the main flow equalizing body 11 and the edge region 12 is large, for example, 180 degrees (i.e., the flow equalizing plate has a flat plate structure), the partial air flow blown to the rear of the main flow equalizing body 11 will flow to both sides, and the air outlet from the edge region 12 is greatly affected by the formed vortex.
As an alternative embodiment, the edge region part 12 is of a frame structure. Referring to fig. 4, the edge region portion 12 is illustrated. The frame structure facilitates the formation of a larger area aperture in the edge region 12. Specifically, more than one frame-shaped hole 15 is formed on each edge region portion 12 (the area of the frame-shaped hole 15 is larger than that of the flow equalizing hole 13), and the frame-shaped holes 15 on the flow equalizing plate structure 1 are distributed along the circumferential direction of the flow equalizing plate structure 1. The angle β between the flow equalizing main body portion 11 and the edge region portion 12 is preferably set to 100 ° to 110 °. Referring to fig. 4, the flow equalizing plate structure is a bilateral symmetry structure, and for the edge region part 12 on the left side of the flow equalizing main body part 11, an included angle exists between the frame edge connected with the flow equalizing main body part 11 and the flow equalizing main body part 11. A row of flow equalizing holes 13 is provided in the lower edge region 12 of the flow equalizing body 11. The left edge region 12 and the lower edge region 12 form an angle γ. The air current blows to the main part 11 that flow equalizes the rear part air current and can flow to both sides, because marginal region portion 12 and the main part 11 that flow equalizes have the contained angle, the effect that blocks that the air current that flows receives marginal region portion 12 can change the flow direction, finally makes to form the vortex and influences less relatively to following the air-out of marginal region portion 12.
Example 2:
the utility model provides a flow equalizing and resistance reducing device, the inside diffusion water conservancy diversion chamber that forms of flow equalizing and resistance reducing device, flow equalizing and resistance reducing device include the flow equalizing plate structure 1 that this embodiment 1 described, and flow equalizing plate structure 1 sets up in diffusion water conservancy diversion intracavity, and flow equalizing plate structure 1 can be fixed through bolt or welding.
As an optional implementation manner, the flow equalizing and resistance reducing device further comprises a flow guide plate structure, the flow guide plate structure and the flow equalizing plate structure 1 are sequentially arranged in the pressure expanding flow guide cavity along the direction of the airflow flowing through the flow equalizing and resistance reducing device, the flow guide plate structure is used for guiding the collected airflow to the two sides, and the flow guide plate structure plays a role in primary flow equalizing.
Specifically, one of the inner side surfaces of the flow equalizing and resistance reducing device is a wind power concentration inner side surface, and the guide plate structure is arranged on the wind power concentration inner side surface. Referring to fig. 1, in actual operation of the centrifugal fan, the gas is influenced by the centrifugal force and has a radial component velocity, and the radial component velocity causes the flow at the outlet of the volute to gradually increase from the lower edge to the upper edge. At this time, the upper cavity wall of the diffusion diversion cavity of the flow equalizing and resistance reducing device forms a wind power concentrated inner side surface, the diversion plate structure is arranged on the wind power concentrated inner side surface, and the exposed side 14 of the flow equalizing plate structure 1 is matched with the upper cavity wall of the diffusion diversion cavity.
Regarding the guide plate structure, as follows specifically, the central line that flows through the direction of flow equalizing and resistance reducing device along the air current on the concentrated face of air current is the reference line, and the guide plate structure includes a plurality of guide plates 2, and guide plates 2 along the direction interval distribution that is perpendicular to the reference line on the concentrated face of air current, from the air inlet side to the direction of the air-out side of flow equalizing and resistance reducing device, the interval of guide plate 2 and reference line increases gradually. Referring to fig. 7, a flow guide plate 2 is illustrated, a distance exists between the bottom of the flow guide plate 2 and the lower cavity wall of the diffusion flow guide cavity, and the flow guide plate 2 mainly guides the flow of the region with concentrated wind force in the diffusion flow guide cavity. Specifically, the guide plates 2 are symmetrically distributed by taking the reference line as a symmetry line, the guide plates 2 positioned on the same side of the reference line are arranged in parallel, and the guide plates 2 are parallel to the inner side surfaces of the corresponding sides of the flow equalizing and resistance reducing devices. Referring to fig. 8, the distribution of the flow guide plates 2 is simply illustrated, and from the air inlet side to the air outlet side of the flow equalizing and flow reducing device, the flow guide plates 2 deviate from the direction far away from the reference line, so that the concentrated air flows to the two sides, and flow equalizing is facilitated. In addition, the number of the guide plates 2, the distance between two adjacent guide plates 2, and the width and length of the guide plates 2 can be adjusted accordingly according to the actual situation.
As an alternative embodiment, the flow equalizing and resistance reducing device includes a first diffuser section 3 and a second diffuser section 4 connected to the first diffuser section 3, the cross-sectional area of the first diffuser section 3 and the cross-sectional area of the second diffuser section 4 increase along the direction of the airflow flowing through the flow equalizing and resistance reducing device, and the flow equalizing plate structure 1 and the flow guide plate structure are respectively disposed in the first diffuser section 3 and the second diffuser section 4.
As for the first diffuser section 3, specifically, as follows, the first diffuser section 3 includes a third side plate 303 and a fourth side plate 304, the third side plate 303 and the fourth side plate 304 are disposed oppositely, and the third side plate 303 and the fourth side plate 304 are inclined in a direction away from the center of the first diffuser section 3 in a direction from the air inlet side to the air outlet side of the flow equalizing and flow reducing device. The first diffuser section 3 further includes a first side plate 301 and a second side plate 302, the first side plate 301 and the second side plate 302 are arranged in parallel, the third side plate 303 and the fourth side plate 304 are respectively arranged on two sides of the first side plate 301 and the second side plate 302, the first side plate 301, the second side plate 302, the third side plate 303 and the fourth side plate 304 form a diversion channel, and a diversion plate structure is arranged on the inner side of the first side plate 301 or the second side plate 302.
In addition, the included angle of the obtuse angle between the plane vertical to the flow guide channel and the third side plate 303 is 95-100 degrees; the obtuse included angle between the plane vertical to the flow guide channel and the fourth side plate 304 is 95-100 degrees. The third side plate 303 and the fourth side plate 304 are symmetrical, and the third side plate 303 and the fourth side plate 304 should not be too large, so that the local loss is increased by too large an angle.
Regarding the second diffuser section 4, specifically, as follows, four side plates of the second diffuser section 4 are all obliquely arranged, and the second diffuser section 4 is in a horn flaring structure relative to the first diffuser section 3. Referring to fig. 1, a second diffusion section is schematically shown, a flow equalizing plate structure 1 is arranged at the second diffusion section 4, and the flow equalizing plate structure 1 is aligned with an air port between the first diffusion section 3 and the second diffusion section 4.
Example 3:
the utility model provides a centrifugal fan structure, includes centrifugal fan 5 and the device that falls of flow equalizing that embodiment 2 described, and the device that falls that flow equalizing is connected with centrifugal fan 5, and the device that falls that flow equalizing is used for being connected with the heat exchanger. The centrifugal fan 5 can be a double-air inlet centrifugal fan or a single-air inlet centrifugal fan.
Referring to fig. 1, the flow equalizing and resistance reducing device is connected to the outlet of the volute of the centrifugal fan 5 through a flexible connection device 7, and serves as a subsequent air duct of the centrifugal fan. The terminal connection surface cooler 6, in comparatively limited space, no matter to promoting the air supply homogeneity, still reduce local resistance, all have apparent effect.
Centrifugal fan structure during operation at first reduces 5 air supply speeds of centrifugal fan through first diffusion section 3, sets up guide plate 2 on the first diffusion section, carries out preliminary flow equalizing to the great region of flow. The 3 terminal connections second diffusion sections 4 of first diffusion section, installation flow equalizing plate structure 1 in the second diffusion section 4, flow equalizing plate structure 1 just to the export of first diffusion section 3, and flow equalizing plate structure 1's structural feature (see figure 4, the aperture from the top down increases gradually, and the periphery adopts multilateral hole), flow equalizes to the air supply of centrifugal fan spiral case, reduces the wind speed, reduces local loss.
Example 4:
an air conditioning system comprises the current-sharing and resistance-reducing device described in embodiment 2.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (19)
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| CN202111036616.0A CN113790174A (en) | 2021-09-06 | 2021-09-06 | Flow equalizing plate structure, flow equalizing and resistance reducing device, centrifugal fan structure and air conditioning system |
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| CN202111036616.0A CN113790174A (en) | 2021-09-06 | 2021-09-06 | Flow equalizing plate structure, flow equalizing and resistance reducing device, centrifugal fan structure and air conditioning system |
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| CN207830214U (en) * | 2017-12-16 | 2018-09-07 | 大唐东北电力试验研究所有限公司 | A kind of fan outlet constant-current stabilizer |
| CN211009280U (en) * | 2019-11-19 | 2020-07-14 | 淄博气宇空调节能设备有限公司 | Fan flow equalizing system |
| CN113175446A (en) * | 2021-04-09 | 2021-07-27 | 合肥通用机械研究院有限公司 | Rectifying structure of multi-wing centrifugal fan for compressor cooling system |
| CN216241491U (en) * | 2021-09-06 | 2022-04-08 | 珠海格力电器股份有限公司 | Flow equalizing plate structure, flow equalizing and resistance reducing device, centrifugal fan structure and air conditioning system |
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