CN117386643A - High-voltage direct-current fan - Google Patents
High-voltage direct-current fan Download PDFInfo
- Publication number
- CN117386643A CN117386643A CN202310971983.2A CN202310971983A CN117386643A CN 117386643 A CN117386643 A CN 117386643A CN 202310971983 A CN202310971983 A CN 202310971983A CN 117386643 A CN117386643 A CN 117386643A
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- China
- Prior art keywords
- channel
- air outlet
- diversion
- pump head
- guide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000007704 transition Effects 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000000605 extraction Methods 0.000 abstract description 6
- 230000009471 action Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 11
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000000411 inducer Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
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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
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
-
- 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
- F04D29/26—Rotors specially for elastic fluids
-
- 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
- F04D29/403—Casings; Connections of working fluid especially adapted for elastic fluid pumps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a high-voltage direct-current fan, and belongs to the technical field of fans; the two axial end surfaces of the impeller are respectively provided with a first guide vane group and a second guide vane group, and a first guide channel and a second guide channel are arranged in the pump head shell in a one-to-one correspondence manner, so that gas entering from the air inlet channel flows through the first guide channel and the second guide channel respectively under the extraction action of the first guide vane group and the second guide vane group, and finally flows out from the air outlet channel; because both end surfaces of the impeller can complete the air extraction and exhaust work, when the air extraction and exhaust work is carried out, the smaller blade volume arranged on the impeller can complete the same air outlet amount, so that the volume of the impeller and the pump shell can be further reduced while the efficient air outlet is ensured.
Description
Technical Field
The invention relates to the technical field of fans, in particular to a high-voltage direct-current fan.
Background
Currently, fan impellers mainly have two main components: the movable impeller and the fixed impeller mainly generate wind, and when the movable impeller rotates at a high rotating speed of 20000-30000 revolutions per minute, negative pressure is generated at the air inlet to form vacuum, so that suction force is formed; the fixed impeller, also called as inducer, mainly aims at enabling the air quantity generated by the movable impeller to be released smoothly, and directly influences the efficiency of the equipment motor. In the prior art, a fan impeller is also improved, for example, a fan for a direct current motor is provided in the patent application with the application number of 201210048820.9, a first-stage fixed impeller and a first-stage movable impeller are arranged in a fan housing of the fan to form a first-stage wind wheel assembly, the bottom of the first-stage fixed impeller is fixed with a motor shell, the middle of the first-stage fixed impeller is connected with a motor output shaft through a bearing, the first-stage movable impeller is sleeved on the motor output shaft, at least one group of wind wheel assemblies are further arranged in the fan housing, each wind wheel assembly comprises a movable impeller, the movable impellers are sleeved on the motor output shaft and are arranged at the front end of the first-stage movable impeller in a stacked manner, a supporting piece is arranged between each wind wheel assembly, and the supporting piece is sleeved on the motor output shaft; the fan is assembled through lamination of the multi-stage wind wheel components, so that the air inlet quantity in the fan housing is realized, the vacuum degree is further improved, and the suction force generated by the fan is effectively increased.
However, in the actual working process, the existing fans are found to adopt a single-flow-channel hydrogen supply mode, so that on one hand, the impellers cannot be effectively utilized, and on the other hand, the volumes of the impellers and the pump shell cannot be further reduced under the same air outlet quantity.
Disclosure of Invention
The invention provides a high-voltage direct current fan, which aims to solve the problem that the volume of an impeller and a pump shell is further reduced while high-efficiency air outlet cannot be guaranteed in the prior art.
In order to achieve the above purpose, the invention provides a high-voltage direct current fan, which comprises a pump head assembly in transmission connection with a motor assembly, wherein the pump head assembly comprises a pump head shell and an impeller arranged in the pump head shell, two axial end surfaces of the impeller are respectively provided with a first guide vane group and a second guide vane group, and the first guide vane group and the second guide vane group are annularly arranged; the inner wall of the pump head shell is respectively provided with a first flow guide channel and a second flow guide channel with U-shaped sections, the first flow guide channel and the second flow guide channel are respectively arranged in one-to-one correspondence with the first flow guide blade group and the second flow guide blade group, and the radial lengths of the first flow guide blade group and the second flow guide blade group can be covered by the first flow guide channel and the second flow guide channel; the pump head shell is provided with an air inlet channel and an air outlet channel, the air inlet ends of the first diversion channel and the second diversion channel are communicated with the air inlet channel, and the air outlet ends of the first diversion channel and the second diversion channel are communicated with the air outlet channel; the air inlet ends of the first diversion channel and the second diversion channel are respectively arranged at intervals with the air outlet ends of the first diversion channel and the second diversion channel.
Preferably, the pump head housing comprises a pump head housing and an air receiving box, the impeller, the first flow guide channel and the second flow guide channel are all arranged in the pump head housing, and the air inlet channel and the air outlet channel are all arranged on the air receiving box.
Preferably, the air outlet end of the air inlet channel can cover the air inlet ends of the first diversion channel and the second diversion channel at the same time; the air inlet end of the air outlet channel can cover the air outlet ends of the first flow guide channel and the second flow guide channel at the same time.
Preferably, the pump head shell comprises a first shell and a second shell which are connected, the first shell and the second shell are respectively provided with a first diversion channel and a second diversion channel, the first shell is provided with a transition channel which is respectively communicated with two ends of the second diversion channel, and the two transition channels are respectively communicated with the air inlet channel and the air outlet channel; the second housing is connected with the impeller through a rotating shaft.
Preferably, the first guide vane set and the second guide vane set each comprise an annular guide groove formed in the impeller, and a plurality of guide vanes are arranged in the annular guide grooves at intervals.
Preferably, the interval between adjacent guide vanes is gradually increased from inside to outside.
Preferably, the annular diversion trench is provided with an arc-shaped bottom surface, and the distance between the arc-shaped bottom surface and the axial end surface is gradually reduced from inside to outside.
Preferably, the air outlet end of the air outlet channel is provided with a variable flow groove, the depth of the variable flow groove is larger than the diameter of the air outlet end of the air outlet channel, a variable flow plate is arranged in the variable flow groove, and the variable flow plate is connected with the lifting cylinder.
Preferably, the air outlet end of the air outlet channel is provided with a flow sensor.
Preferably, pressure sensors are arranged in the first diversion channel and the second diversion channel.
Compared with the prior art, the invention has the following beneficial effects:
1) The two axial end surfaces of the impeller are respectively provided with a first guide vane group and a second guide vane group, and a first guide channel and a second guide channel are arranged in the pump head shell in a one-to-one correspondence manner, so that gas entering from the air inlet channel flows through the first guide channel and the second guide channel respectively under the extraction action of the first guide vane group and the second guide vane group, and finally flows out from the air outlet channel; because both end surfaces of the impeller can complete the air extraction and exhaust work, when the air extraction and exhaust work is carried out, the smaller blade volume arranged on the impeller can complete the same air outlet amount, so that the volume of the impeller and the pump shell can be further reduced while the efficient air outlet is ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a high voltage DC fan according to the present invention;
FIG. 2 is a schematic view of the pump head housing of FIG. 1;
FIG. 3 is a schematic view of the impeller and the second flow channel of FIG. 1;
FIG. 4 is a schematic diagram of a second flow channel in FIG. 1;
FIG. 5 is a schematic diagram of the first flow channel in FIG. 1;
FIG. 6 is a schematic view of the impeller of FIG. 1;
FIG. 7 is a schematic view of the gas collecting box in FIG. 1;
the pump head comprises a pump head shell 1, an air receiving box 2, an impeller 3, a first flow guide channel 4, a second flow guide channel 5, an air inlet channel 6, an air outlet channel 7, a first shell 8, a second shell 9, a transition channel 10, flow guide vanes 11, annular flow guide grooves 12, flow variable grooves 13, a flow variable plate 14, a lifting cylinder 15, a first flow guide vane set 16 and a second flow guide vane set 17.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
As shown in fig. 1 to 7, the present invention provides a high-voltage direct current fan, mainly introducing a pump head assembly in transmission connection with a motor assembly, and the motor assembly is not described in detail, and the motor assembly in the prior art can be adopted as long as the motor assembly can drive an impeller installed in a pump head housing to rotate;
example 1:
the two axial end surfaces of the impeller 3 are respectively provided with a first guide vane group 16 and a second guide vane group 17, and the first guide vane group 16 and the second guide vane group 17 can be of an integrated two-sided structure or a split structure, so long as the impeller 3 structure can be formed in a back-to-back mode along the axial direction; the first guide vane group 16 and the second guide vane group 17 are both annularly arranged, preferably in a circular ring structure, the circular ring structure comprises an annular guide groove 12 arranged on the impeller 3, and a plurality of guide vanes 11 are arranged in the annular guide groove 12 at intervals; in order to achieve a better flow guiding effect, the interval between adjacent flow guiding vanes 11 is gradually increased from inside to outside, so that the closer to the edge of the impeller 3, the more obvious the flow guiding effect is; further, in order to further enhance the flow guiding effect, the bottom of the annular flow guiding groove 12 is designed to be an arc bottom surface, and the distance between the arc bottom surface and the axial end surface is gradually reduced from inside to outside, namely, a state of supporting gas upwards out of the space between the adjacent flow guiding blades 11 is formed, so that the flow guiding effect is enhanced;
in order to cooperate with the annular diversion trench 12, the inner wall of the pump head shell is respectively provided with a first diversion channel 4 and a second diversion channel 5 with U-shaped sections, the first diversion channel 4 and the second diversion channel 5 can be formed by digging downwards on the inner wall of the pump head shell or can be formed by protruding upwards, so long as the arrangement corresponding to the first diversion blade group 16 and the second diversion blade group 17 one by one can be realized, channels for extracting gas to flow can be formed, and the problem of reduced gas outlet efficiency caused by gas dissipation in the whole pump head shell is avoided; in order to ensure the efficient flow of the gas, the coverage area of the channel cannot be smaller than the radial length of the guide vane 11, and the diameter of the annular guide groove 12 is not larger than the diameter of the channel, namely, the radial length of the first guide vane group 16 and the radial length of the second guide vane group 17 can be covered by the first guide channel 4 and the second guide channel 5;
in order to cooperate with the first diversion channel 4 and the second diversion channel 5, an air inlet channel 6 and an air outlet channel 7 are arranged on the pump head shell, the air inlet ends of the first diversion channel 4 and the second diversion channel 5 are communicated with the air inlet channel 6, the air outlet ends of the first diversion channel 4 and the second diversion channel 5 are communicated with the air outlet channel 7, two air inlet ends respectively corresponding to the first diversion channel 4 and the second diversion channel 5 can be arranged on the air inlet channel 6, and one air inlet end simultaneously covering the first diversion channel 4 and the second diversion channel 5 can be arranged on the air inlet channel 6; correspondingly, the air outlet channel 7 can be provided with two air outlet ends corresponding to the first diversion channel 4 and the second diversion channel 5 respectively, and the air outlet channel 7 can also be provided with an air outlet end which covers the first diversion channel 4 and the second diversion channel 5 simultaneously;
in order to avoid the mutual influence of air inlet and air outlet, the air inlet ends of the first diversion channel 4 and the second diversion channel 5 are respectively arranged at intervals with the air outlet ends of the first diversion channel 4 and the second diversion channel 5; further, the interval distance between the air inlet end and the air outlet end is not too large, so that the situation that the area of the flow guide channel covering the flow guide vane 11 is too small, so that more air extracted by the flow guide vane 11 flows into the whole pump head shell and further the air outlet efficiency is reduced is avoided, and the central angle of the two interval ends is not more than 30 degrees relative to the center of the circle of the impeller 3.
Example 2:
other structures of this embodiment are the same as those of embodiment 1, and only the following structures will be further described:
the pump head shell specifically comprises a pump head shell 1 and an air receiving box 2, wherein the pump head shell 1 mainly plays a role in pumping and exhausting, and an impeller 3, a first diversion channel 4 and a second diversion channel 5 are arranged in the pump head shell 1; the air receiving box 2 mainly plays a role of communicating an air supply source with an air consumption part, and an air inlet channel 6 and an air outlet channel 7 are arranged on the air receiving box 2.
Further, in order to facilitate installation and assembly, the pump head housing 1 is of a split type structure, in the invention, the pump head housing 1 comprises a first housing 8 and a second housing 9 which are connected, the first housing 8 and the second housing 9 are respectively provided with a first diversion channel 4 and a second diversion channel 5, the first housing 8 is provided with a transition channel 10 which is respectively communicated with two ends of the second diversion channel 5, and the two transition channels 10 are respectively communicated with an air inlet channel 6 and an air outlet channel 7; the second housing 9 is connected to the impeller 3 via a rotation shaft.
Example 3:
other structures of this embodiment are the same as those of embodiments 1 and 2, and only the following structures will be further described:
in order to facilitate the control of the air output, the air output end of the air output channel 7 is provided with a variable flow groove 13, the depth of the variable flow groove 13 is larger than the diameter of the air output end of the air output channel 7, a variable flow plate 14 is arranged in the variable flow groove 13, the variable flow plate 14 is connected with a lifting cylinder 15, and the variable flow plate 14 can gradually change the flow diameter of the air output channel 7 in the lifting process of the lifting cylinder 15 so as to realize the technical purpose of controlling the flow; in order to facilitate the measurement of the gas flow, a flow sensor is arranged at the gas outlet end of the gas outlet channel 7, and the arrangement position of the flow sensor is positioned outside the variable flow tank 13; in order to avoid the damage of the flow rate reduction in the flow rate conversion process to the inside of the pump head shell caused by the excessive high gas pressure, pressure sensors are arranged in the first flow guide channel 4 and the second flow guide channel 5, and when the pressure sensors detect that the pressure value is larger than a preset threshold value, the damage to the internal structure of the pump head shell is easy to occur, even if the preset flow rate of the flow sensor is not reached, the lifting cylinder 15 is controlled to lift, so that the influence of the flow rate conversion plate 14 on the air outlet flow rate of the air outlet channel 7 is eliminated.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention and not for limiting it, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that: the technical scheme of the invention can be modified or replaced by the same, and the modified technical scheme cannot deviate from the spirit and scope of the technical scheme of the invention.
Claims (10)
1. The high-voltage direct-current fan is characterized by comprising a pump head assembly in transmission connection with a motor assembly, wherein the pump head assembly comprises a pump head shell and an impeller arranged in the pump head shell, two axial end faces of the impeller are respectively provided with a first guide vane set and a second guide vane set, and the first guide vane set and the second guide vane set are annularly arranged; the inner wall of the pump head shell is respectively provided with a first flow guide channel and a second flow guide channel with U-shaped sections, the first flow guide channel and the second flow guide channel are respectively arranged in one-to-one correspondence with the first flow guide blade group and the second flow guide blade group, and the radial lengths of the first flow guide blade group and the second flow guide blade group can be covered by the first flow guide channel and the second flow guide channel; the pump head shell is provided with an air inlet channel and an air outlet channel, the air inlet ends of the first diversion channel and the second diversion channel are communicated with the air inlet channel, and the air outlet ends of the first diversion channel and the second diversion channel are communicated with the air outlet channel; the air inlet ends of the first diversion channel and the second diversion channel are respectively arranged at intervals with the air outlet ends of the first diversion channel and the second diversion channel.
2. The high voltage direct current fan according to claim 1, wherein: the pump head shell comprises a pump head shell and an air receiving box, the impeller, the first flow guide channel and the second flow guide channel are all arranged in the pump head shell, and the air inlet channel and the air outlet channel are all arranged on the air receiving box.
3. The high voltage direct current fan according to claim 2, wherein: the air outlet end of the air inlet channel can cover the air inlet ends of the first diversion channel and the second diversion channel at the same time; the air inlet end of the air outlet channel can cover the air outlet ends of the first flow guide channel and the second flow guide channel at the same time.
4. A high voltage direct current fan according to claim 3, characterized in that: the pump head shell comprises a first shell and a second shell which are connected, the first shell and the second shell are respectively provided with a first diversion channel and a second diversion channel, the first shell is provided with a transition channel which is respectively communicated with two ends of the second diversion channel, and the two transition channels are respectively communicated with the air inlet channel and the air outlet channel; the second housing is connected with the impeller through a rotating shaft.
5. The high voltage dc fan of claim 1 or 4, wherein: the first guide vane group and the second guide vane group comprise annular guide grooves formed in the impeller, and a plurality of guide vanes are arranged in the annular guide grooves at intervals.
6. The high voltage dc fan of claim 5 wherein: the interval between the adjacent guide vanes gradually increases from inside to outside.
7. The high voltage dc fan of claim 6 wherein: the annular diversion trench is provided with an arc bottom surface, and the distance between the arc bottom surface and the axial end surface is gradually reduced from inside to outside.
8. The high voltage direct current fan according to claim 1, wherein: the variable flow groove is formed in the air outlet end of the air outlet channel, the depth of the variable flow groove is larger than the diameter of the air outlet end of the air outlet channel, a variable flow plate is arranged in the variable flow groove, and the variable flow plate is connected with the lifting cylinder.
9. The high voltage dc fan of claim 8 wherein: and a flow sensor is arranged at the air outlet end of the air outlet channel.
10. The high voltage dc fan of claim 9, wherein: pressure sensors are arranged in the first diversion channel and the second diversion channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310971983.2A CN117386643A (en) | 2023-08-03 | 2023-08-03 | High-voltage direct-current fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310971983.2A CN117386643A (en) | 2023-08-03 | 2023-08-03 | High-voltage direct-current fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117386643A true CN117386643A (en) | 2024-01-12 |
Family
ID=89436183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310971983.2A Pending CN117386643A (en) | 2023-08-03 | 2023-08-03 | High-voltage direct-current fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117386643A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112610525A (en) * | 2020-12-09 | 2021-04-06 | 江苏美的清洁电器股份有限公司 | Fan for dust collector and dust collector |
| CN114776630A (en) * | 2022-06-17 | 2022-07-22 | 杭州老板电器股份有限公司 | Double-side air inlet fan for range hood and range hood |
-
2023
- 2023-08-03 CN CN202310971983.2A patent/CN117386643A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112610525A (en) * | 2020-12-09 | 2021-04-06 | 江苏美的清洁电器股份有限公司 | Fan for dust collector and dust collector |
| CN114776630A (en) * | 2022-06-17 | 2022-07-22 | 杭州老板电器股份有限公司 | Double-side air inlet fan for range hood and range hood |
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