CN110360155A - A kind of more flow-guiding channel centrifugal pumps or radial fan shell - Google Patents
A kind of more flow-guiding channel centrifugal pumps or radial fan shell Download PDFInfo
- Publication number
- CN110360155A CN110360155A CN201910708020.7A CN201910708020A CN110360155A CN 110360155 A CN110360155 A CN 110360155A CN 201910708020 A CN201910708020 A CN 201910708020A CN 110360155 A CN110360155 A CN 110360155A
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- China
- Prior art keywords
- flow
- guiding channel
- outlet
- volute
- impeller
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Classifications
-
- 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
-
- 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
- F04D29/445—Fluid-guiding means, e.g. diffusers especially adapted for liquid pumps
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention relates to centrifugal pump or centrifugal blower technical fields, specifically disclose a kind of more flow-guiding channel centrifugal pumps or radial fan shell, comprising: volute casing, spiral case inlet, volute outlet in spiral case, spiral case are set to the indoor a plurality of flow-guiding channel of snail, flow-guiding channel import, flow-guiding channel outlet and mixing chamber.The present invention passes through the flat multiple flow-guiding channel imports for being arranged at circumference of impeller, the fluid subregion thrown away outward from impeller is imported into corresponding flow-guiding channel, and it is guided to volute outlet and is nearby discharged, pass through a plurality of flow-guiding channel subregion water conservancy diversion, fluid interfering with each other for generating due to flow direction, the difference of flow velocity when volute casing converges in conventional centrifugal pump or centrifugal blower can be greatly lowered, the efficiency of centrifugal pump or centrifugal blower is made to be significantly improved.
Description
Technical field
The invention belongs to centrifugal pump or centrifugal blower technical field, in particular to a kind of more flow-guiding channel centrifugal pumps or centrifugation
Fan casing.
Background technique
Centrifugal pump or centrifugal blower are to be rotated using impeller and fluid is made to generate centrifugal force come work.Centrifugal pump or centrifugation
Blower is before activation, it is necessary to make then to start motor full of fluid in spiral case, make pump shaft impeller high speed rotation, fluid exists
Under the action of centrifugal force, it is thrown out of impeller outer edge, converges in volute casing and water conservancy diversion is into pipeline.At impeller center, fluid is being centrifuged
Vacuum area is formed after being thrown out of under the action of power, fluid is just pressed into spiral case under the action of atmospheric pressure.Impeller is not by
Stalling is dynamic, and fluid is constantly flowed into from import under the action of impeller, flows out from outlet, has achieved the purpose that conveying.
Channel (the referred to as snail that traditional centrifugal pump or radial fan shell only has a scroll casing shape to be gradually expanded to outlet end
Room), fluid is got rid of by impeller high speed to pump case, then is forced the flow direction for applying radial force change fluid by pump case and be directed at spiral case
Outlet.The flow direction and flow velocity of fluid and spiral case the export fluid thrown away due to each position in circumference of impeller are had differences,
Therefore fluid can be collided mutually when volute casing converges, be squeezed and cause energy loss, to reduce centrifugal pump or centrifugal blower
Efficiency.
Summary of the invention
The purpose of the present invention is to provide a kind of more flow-guiding channel centrifugal pumps or radial fan shell, solve conventional centrifugal pump or
Centrifugal blower is because only that a channel, and when fluid converges in volute casing and is guided to outlet by spiral case, overall process all generates phase
Mutually collision and extruding, the defect for causing efficiency to reduce.
To achieve the above object, the present invention provides a kind of more flow-guiding channel centrifugal pumps or radial fan shells, comprising: snail
Shell, volute casing, spiral case inlet, volute outlet, flow-guiding channel, flow-guiding channel import and flow-guiding channel outlet；The volute casing is set to institute
It states in spiral case, the spiral case inlet is set on the spiral case and is connected to the volute casing, and fluid enters simultaneously from the spiral case inlet
It is got rid of from impeller into the volute casing, the volute outlet is set on the spiral case and is connected to the volute casing, is used for fluid from institute
It states in volute casing and is discharged；At least two flow-guiding channels are set in the volute casing in the form of being wound in circumference of impeller, described to lead
Circulation road import is set to one end of the flow-guiding channel, and at least two flow-guiding channel imports are distributed in centered on impeller shaft
The circumference of impeller, and the circumference of direction and impeller is tangent；The flow-guiding channel outlet is set to the other end of the flow-guiding channel simultaneously
It extends near the volute outlet.
Preferably, in above-mentioned technical proposal, the flow-guiding channel extends to the volute outlet after being wound, and described leads
The direction of circulation road outlet is identical as the direction of the volute outlet.
Preferably, in above-mentioned technical proposal, mixing chamber is equipped between the flow-guiding channel outlet and the volute outlet.
Preferably, adjacent when extending to the volute outlet after the flow-guiding channel is wound in above-mentioned technical proposal
The conduit wall of the flow-guiding channel is equipped with multiple through-holes.
Preferably, in above-mentioned technical proposal, height of the flow-guiding channel outlet along export direction to the impeller center of circle be not low
In pump housing endophragm in this direction to the height in the impeller center of circle.
Preferably, in above-mentioned technical proposal, the conduit wall of the flow-guiding channel entrance is unilateral inclined edge structure.
Preferably, in above-mentioned technical proposal, the conduit wall of the channel exit is bilateral inclined edge structure.
Compared with prior art, the invention has the following beneficial effects:
The present invention passes through the multiple flow-guiding channel imports for being averagely located at circumference of impeller, and the fluid subregion that impeller is thrown away is led
It flows into corresponding flow-guiding channel and exports respectively, considerably reduce conventional volute fluid when converging because flowing to flow velocity not
Together, generate mutually collision and squeeze and caused by energy loss, effectively increase the efficiency of centrifugal pump or centrifugal blower.
Detailed description of the invention
Fig. 1 is the structure chart of the more flow-guiding channel centrifugal pumps of the present invention or radial fan shell.
Fig. 2 is the structure chart of another structure of the more flow-guiding channel centrifugal pumps of the present invention or radial fan shell.
Fig. 3 is the structure chart of the third structure of the more flow-guiding channel centrifugal pumps of the present invention or radial fan shell.
Fig. 4 is the performance data comparison diagram of the present invention with conventional centrifugal pump case.
Main appended drawing reference explanation:
1- spiral case, 2- volute casing, 3- spiral case inlet, 4- volute outlet, 5- flow-guiding channel, 6- flow-guiding channel import, 7- water conservancy diversion
Channel outlet, 8- mixing chamber, 9- through-hole, 10- circumference of impeller line.
Specific embodiment
With reference to the accompanying drawing, specific embodiments of the present invention will be described in detail, it is to be understood that guarantor of the invention
Shield range is not limited by the specific implementation.
As shown in Figure 1, the more flow-guiding channel centrifugal pumps or radial fan shell in the embodiment include: spiral case 1, volute casing 2, snail
Shell import 3, volute outlet 4, flow-guiding channel 5, flow-guiding channel import 6, flow-guiding channel outlet 7 and mixing chamber 8.Volute casing 2 is set to snail
In shell 1, spiral case inlet 3 is set on spiral case 1 and is connected to volute casing 2, and when the impeller is rotated, fluid flows through spiral case inlet 3 and impeller
On center port enter in volute casing 2.Volute outlet 4 is located on spiral case 1, and volute outlet 4 is connected to volute casing 2, and fluid can be from
Volute casing 2 is discharged to outside volute outlet 4.Four flow-guiding channels 5 wind and are set in volute casing 2 around circumference of impeller, and four water conservancy diversion are logical
The one end in road 5 is flow-guiding channel import 6, and the other end is flow-guiding channel outlet 7.Flow-guiding channel import 6 is equal centered on impeller shaft
It is distributed in circumference of impeller, and the circumference of direction and impeller is tangent, flow-guiding channel outlet 7 is located near volute outlet 4, with volute outlet
It is additionally provided with a mixing chamber 8 between 4, flow-guiding channel outlet 7 is towards flow direction in mixing chamber 8 of, fluid, the court of volute outlet 4
To all the same.Wherein, the conduit wall at flow-guiding channel import 6 is unilateral inclined edge structure, and the conduit wall at flow-guiding channel outlet 7 is
Bilateral inclined edge structure.
As shown in Fig. 2, for another structure type in the embodiment, after four flow-guiding channels 5 are wound, with straight line
Form extends at volute outlet 4, and four flow-guiding channel outlets 7 are generally aligned in the same plane with spiral case mouth 4 out, and flow-guiding channel exports
7 direction and volute outlet 4 are towards identical.
As shown in figure 3, for the third structure type in the embodiment, on the basis of Fig. 2 structure type, flow-guiding channel
5 straight line portion is not limited to be provided with multiple through-holes on the conduit wall of straight line portion, enables a fluid between each flow-guiding channel 5
It is interconnected.
Next, the working principle to more flow-guiding channel centrifugal pumps or radial fan shell in the embodiment carries out specifically
It is bright, so that those skilled in the art know more about the present invention, it is specific as follows:
The impeller of centrifugal pump or centrifugal blower is thrown away by rotation, fluid along the tangent to periphery direction of impeller, flow-guiding channel
Import 6 is evenly distributed in circumference of impeller outer rim, it is ensured that the fluid in each region thrown away from impeller can be along circumference of impeller
Tangential direction smoothly enters in flow-guiding channel 5, and flow-guiding channel 5 is mainly used for isolating Lead-In Area fluid and non-Lead-In Area stream
Body reduces and interferes with each other energy loss caused by extruding because of speed and direction difference when different fluid streams are converged in volute casing.When
When fluid is guided near volute outlet 4, flows to and disappeared with the disturbing factor of centrifugal force, therefore, each flow-guiding channel 5
Converge in the linearity region, energy loss is greatly reduced.
Finally, being similarly four of Fig. 1 structure type in the plain edition centrifugal pump and the embodiment of 400w using input power
Flow-guiding channel centrifugal pump carries out comparative test of drawing water, as a result such as the following table 1:
1 centrifugal pump of table draws water comparative test table
From comparative test both as shown in connection with fig. 4 flow lift performance diagram (wherein the structure of impeller is identical,
And experimental work environment is identical) it can be concluded that the centrifugal pump using more flow-guiding channel centrifugal pump shells compares plain edition
Centrifugal pump overall performance significantly improves.It is worth noting that centrifugal pump is consistent with the working principle of centrifugal blower, thus using from
When heart pump does comparative experiments, the comparative experiments of centrifugal blower repeats no more here.
The description of specific exemplary embodiment of the invention is in order to illustrate and illustration purpose.These descriptions are not
Want to limit the invention to disclosed precise forms, and it will be apparent that according to the above instruction, much can be changed and be become
Change.The purpose of selecting and describing the exemplary embodiment is that explain the specific principles of the present invention and its practical application, from
And those skilled in the art can be realized and utilize a variety of different exemplary implementation schemes of the invention and various
Different selections and change.The scope of the present invention is intended to be limited by claims and its equivalents.
Claims (7)
1. a kind of more flow-guiding channel centrifugal pumps or radial fan shell characterized by comprising spiral case (1), volute casing (2), spiral case into
Mouth (3), volute outlet (4), flow-guiding channel (5), flow-guiding channel import (6) and flow-guiding channel outlet (7)；
The volute casing (2) be set to the spiral case (1) in, the spiral case inlet (3) be set to the spiral case (1) on and with the volute casing
(2) it is connected to, fluid enters from the spiral case inlet (3) and got rid of from impeller into the volute casing (2), and the volute outlet (4) sets
It is connected on the spiral case (1) and with the volute casing (2), the discharge from the volute casing (2) for fluid；
At least two flow-guiding channels (5) are set in the volute casing (2) in the form of being wound in circumference of impeller, and the water conservancy diversion is logical
Road import (6) is set to the one end of the flow-guiding channel (5), and at least two flow-guiding channel imports (6) are centered on impeller shaft
It is distributed in the circumference of impeller, and the circumference of direction and impeller is tangent；
Flow-guiding channel outlet (7) is set to the other end of the flow-guiding channel (5) and to extend to the volute outlet (4) attached
Closely.
2. more flow-guiding channel centrifugal pumps according to claim 1 or radial fan shell, which is characterized in that the flow-guiding channel
(5) it is extended to after being wound the volute outlet (4), and the direction and the volute outlet (4) of flow-guiding channel outlet (7)
Direction it is identical.
3. more flow-guiding channel centrifugal pumps according to claim 1 or radial fan shell, which is characterized in that the flow-guiding channel
It exports and is equipped with mixing chamber (8) between (7) and the volute outlet (4).
4. more flow-guiding channel centrifugal pumps according to claim 1 or radial fan shell, which is characterized in that when the water conservancy diversion is logical
Road (5) extends to the volute outlet (4) after being wound when, the conduit wall of the adjacent flow-guiding channel (5) is equipped with multiple through-holes
(9).
5. more flow-guiding channel centrifugal pumps according to claim 1 or radial fan shell, which is characterized in that the channel outlet
(7) along the height of export direction to the impeller center of circle not less than height of the pump housing endophragm to the impeller center of circle in this direction.
6. more flow-guiding channel centrifugal pumps according to claim 1 or radial fan shell, which is characterized in that the flow-guiding channel
Conduit wall at import (6) is unilateral inclined edge structure.
7. more flow-guiding channel centrifugal pumps according to claim 1 or radial fan shell, which is characterized in that the channel outlet
(7) conduit wall at is bilateral inclined edge structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910708020.7A CN110360155A (en) | 2019-08-01 | 2019-08-01 | A kind of more flow-guiding channel centrifugal pumps or radial fan shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910708020.7A CN110360155A (en) | 2019-08-01 | 2019-08-01 | A kind of more flow-guiding channel centrifugal pumps or radial fan shell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110360155A true CN110360155A (en) | 2019-10-22 |
Family
ID=68221745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910708020.7A Pending CN110360155A (en) | 2019-08-01 | 2019-08-01 | A kind of more flow-guiding channel centrifugal pumps or radial fan shell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110360155A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112343845A (en) * | 2020-11-06 | 2021-02-09 | 广东美的环境电器制造有限公司 | Fan assembly |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000297790A (en) * | 1999-04-13 | 2000-10-24 | Matsushita Electric Ind Co Ltd | Self-priming pump |
| CN2823619Y (en) * | 2005-10-20 | 2006-10-04 | 宣伯民 | Centrifugal fan having volute screw chamber with shunting way |
| CN1956176A (en) * | 2005-10-27 | 2007-05-02 | 王训忠 | Rectifying device |
| CN102094704A (en) * | 2011-01-27 | 2011-06-15 | 康跃科技股份有限公司 | Multi-nozzle type variable flow rate supercharging device |
| CN202707620U (en) * | 2012-07-06 | 2013-01-30 | 浙江工业大学 | Novel pump body with multiple division plates |
| CN106762839A (en) * | 2016-11-24 | 2017-05-31 | 江苏乐科节能科技股份有限公司 | Eliminate the large-scale vapor scroll casing of centrifugal compressor and its method of secondary flow loss |
-
2019
- 2019-08-01 CN CN201910708020.7A patent/CN110360155A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000297790A (en) * | 1999-04-13 | 2000-10-24 | Matsushita Electric Ind Co Ltd | Self-priming pump |
| CN2823619Y (en) * | 2005-10-20 | 2006-10-04 | 宣伯民 | Centrifugal fan having volute screw chamber with shunting way |
| CN1956176A (en) * | 2005-10-27 | 2007-05-02 | 王训忠 | Rectifying device |
| CN102094704A (en) * | 2011-01-27 | 2011-06-15 | 康跃科技股份有限公司 | Multi-nozzle type variable flow rate supercharging device |
| CN202707620U (en) * | 2012-07-06 | 2013-01-30 | 浙江工业大学 | Novel pump body with multiple division plates |
| CN106762839A (en) * | 2016-11-24 | 2017-05-31 | 江苏乐科节能科技股份有限公司 | Eliminate the large-scale vapor scroll casing of centrifugal compressor and its method of secondary flow loss |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112343845A (en) * | 2020-11-06 | 2021-02-09 | 广东美的环境电器制造有限公司 | Fan assembly |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191022 |