CN102808779A - Low-noise water-cooled centrifugal pump - Google Patents
Low-noise water-cooled centrifugal pump Download PDFInfo
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- CN102808779A CN102808779A CN2011101489952A CN201110148995A CN102808779A CN 102808779 A CN102808779 A CN 102808779A CN 2011101489952 A CN2011101489952 A CN 2011101489952A CN 201110148995 A CN201110148995 A CN 201110148995A CN 102808779 A CN102808779 A CN 102808779A
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Abstract
The invention relates to a low-noise water-cooled centrifugal pump. A cooling chamber is formed inside the motor shaft of the centrifugal pump, cooling water flows from a high-pressure chamber to a low-pressure chamber through a cooling chamber inside the motor shaft, and then the cooling water is mixed together with the cooling water outside the motor and flows back to a negative-pressure chamber to form a cooling loop so as to cool the heat emitted from both the interior and exterior of the motor and solve the sealing problem of the motor at the same time. The centrifugal pump of the invention omits a main noise source of the water pump, resulted from the motor cooling the fan at a high revolving speed, meanwhile, all the rotating components as the rotors and bearings are full of water peripherally, the generated noise is further reduced by the separation of water, additionally, the stators are full of circulating water peripherally so as to completely separate the subtle electromagnetic sound generated by the motor from the external environment to reduce noise by 12 to18 decibel on average; after the water circulating cooling system is utilized, the fan is omitted, thereby greatly saving the energy consumed by the fan, and the centrifugal pump is environment-friendly and energy saving.
Description
Technical field
The present invention relates to a kind of correlative technology field of centrifugal pump, be specifically related to a kind of use in the low noise water-cooled centrifugal pump of circulated water-cooled motor shaft.
Background technique
Be used for domestic water booster water pump ubiquity too noisy in the market, vibration efficient big, water pump is very low, has had a strong impact on normal work of people and living environment and healthy.
Water pump can produce electromagnetic noise in the running of low frequency operating mode for a long time, bearing lacks good lubricated and grease and is prone to loss generation too noisy, the excessive shortcoming of vibration.User's water use peak phase is shorter; Only accounted for 20%～25% of the water time; All the other time water pumps all are under the operating mode of low frequency and move; This moment, water pump was under poor efficiency, to work, and long-play can cause motor to be prone to heating, bearing grease is prone to fusing and runs off, the shortcoming that causes motor to descend greatly working life.
In view of the foregoing, obviously motor is lowered the temperature by fan blade, and also will to reduce noise simultaneously be impracticable.Yet some producer also adopts water cooling mode, generally is through cooling motor shell a, and upper bearing (metal) shell b and lower bearing shell c are as shown in Figure 1; Though can reach effect in advance,, bring very big difficulty for like this sealing of motor; Have slightly not very, motor leaks, and burns motor.Thereby the research staff seeks a kind of sealing that can solve motor always, can solve the heat dissipation problem of motor again, improves the working efficiency of motor and the method for the operation noise that reduces unit simultaneously.
Summary of the invention
To above-mentioned defective, the purpose of this invention is to provide a kind of low noise water-cooled centrifugal pump, big with water pump noise height, the vibration that solves traditional fan blade cooling, the technical problem that its motor seal difficulty of the water pump of water-cooled cooling is big.
For realizing above-mentioned purpose, the technological scheme below the present invention has adopted:
A kind of low noise water-cooled centrifugal pump in axial direction is provided with axis hole and makes a cooling of the inner formation of said motor shaft cavity in the motor shaft of this centrifugal pump; The exhalant canal of the water pump of described centrifugal pump is communicated with the outside cooling circuit of described centrifugal pump motor through the inner cooling cavity of described motor shaft again, forms a cooling circuit.
According to the described low noise water-cooled of preferred embodiment of the present invention centrifugal pump; The inner cooling cavity bottom of described motor shaft is provided with water outlet and is communicated with the outside cooling circuit of centrifugal pump motor; Also be provided with return pipe in this cooling cavity; One end of described return pipe is arranged in this cooling cavity, and the other end is communicated with the exhalant canal of water pump as the water intake of this cooling cavity.
According to the described low noise water-cooled of preferred embodiment of the present invention centrifugal pump; Described return pipe is fixed and is suspended from the inner cooling cavity of motor shaft through a fixed plate, and the bottom of return pipe is through being arranged at a pressing plate and a seal ring fixing seal of cooling cavity bottom.
According to the described low noise water-cooled of preferred embodiment of the present invention centrifugal pump, the internal diameter of described axis hole is more than or equal to the twice of the external diameter of described return pipe.
Owing to adopted above technical characteristics, made the present invention have following advantage and good effect than existing technology:
On centrifugal pump, adopt the hydrologic cycle cooling system of brand new ideas; Cooling water flows to low pressure chamber by hyperbaric chamber through motor axis hole; Merge with the outside cooling water of motor again and be back to negative cavity; Form a cooling circuit, not only cooled off the heat that motor internal distributes but also cooled off the heat that distribute the motor outside, solved the sealing problem of motor simultaneously.After adopting hydrologic cycle cooling system; A main noise having cancelled water pump comes from the high rotating speed cooling fan of motor; All rotatable parts peripheries such as rotor, bearing are full of water simultaneously; The sound that produces is through further reducing after the obstruct of water, and the stator periphery is full of circulating water again and can the trickle electromagnetic sound that motor produces be thoroughly isolated with extraneous, on average reduce by 12～18 decibels of noises.After adopting hydrologic cycle cooling system, removed fan, thereby saved the energy that fan consumed greatly, had the characteristics of environmental protection and energy saving, compared with common ventilated machine, but power saving 5～10%.
Description of drawings
Fig. 1 is the existing structural representation that adopts the centrifugal pump of water-cooling pattern;
Fig. 2 is the structural representation of low noise water-cooled centrifugal pump of the present invention;
Fig. 3 is the partial enlarged drawing of Fig. 2.
Embodiment
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described in detail, but the present invention is not restricted to these embodiments.The present invention contain any on marrow of the present invention and scope, make substitute, modification, equivalent method and scheme.Understand for the public is had completely the present invention, in the following preferred embodiment of the present invention, specified concrete details, and do not had the description of these details also can understand the present invention fully for a person skilled in the art.
A kind of low noise water-cooled centrifugal pump as shown in Figure 2 comprises water pump 1, motor 2, axle 3, return pipe 4, return pipe 5 and return pipe 6.Axle 3 is welded by axle 301 and axle 302, and axle 302 has axis hole a, axis hole b, axis hole c and axis hole d.Axis hole a, axis hole b, axis hole d aperture equate that axis hole c is more than or equal to the twice of return pipe 4 external diameters.
The return pipe 4 as shown in Figure 3 and the sealing of axle 3: return pipe 4 seals through pressing plate 401 and seal ring 402 with the sealing of axle 3; Pressing plate 401 is welded on the return pipe 4; The hole that to have two above diameters on the fixed plate 403 be 4mm; Fixed plate 403 is welded on the return pipe 4, plays fixedly return pipe 4.
The backflow of cooling water is as shown in Figure 2: cooling water flows to return pipe 4 by hyperbaric chamber I through axis hole a, axis hole b; Again through axis hole c; Axis hole d flows to low pressure area II; Low pressure area II communicates with motor cooling chamber III, and cooling water flows into water intake negative cavity IV by return pipe 5 through backwater hole e, return pipe 6 at last, forms a cooling circuit.Cooling water flows to low pressure chamber by hyperbaric chamber through motor axis hole; Merge with the outside cooling water of motor again and be back to negative cavity; Form cooling circuit, not only cooled off the heat that motor internal distributes but also cooled off the heat that distribute the motor outside, solved the sealing problem of motor simultaneously.Because circulatory mediator (water) is to force to flow through fully die cavity, do not exist the slough in the die cavity, convection heat exchange is effective, and the heat that can well in time take away motor and distributed is well cooled off bearing.Certainly, if conditions permit can be added fin and in the cavity of motor casing and urceolus composition, added snakelike water-blocking plate in die cavity, cooling effect can be better.
After adopting hydrologic cycle cooling system; A main noise having cancelled water pump comes from the high rotating speed cooling fan of motor; All rotatable parts peripheries such as rotor, bearing are full of water simultaneously; The sound that produces is through further reducing after the obstruct of water, and the stator periphery is full of circulating water again and can the trickle electromagnetic sound that motor produces be thoroughly isolated with extraneous, on average reduce by 12～18 decibels of noises.After adopting hydrologic cycle cooling system, removed fan, thereby saved the energy that fan consumed greatly, had the characteristics of environmental protection and energy saving, compared with common ventilated machine, but power saving 5～10%.
The preferred embodiment of the present invention just is used for helping to set forth the present invention.Preferred embodiment does not have all details of detailed descriptionthe, does not limit this invention yet and is merely described embodiment.Obviously, according to the content of this specification, can do a lot of modifications and variation.These embodiments are chosen and specifically described to this specification, is in order to explain principle of the present invention and practical application better, thereby person skilled can be utilized the present invention well under making.The present invention only receives the restriction of claims and four corner and equivalent.
Claims (4)
1. a low noise water-cooled centrifugal pump comprises centrifugal pump, and the motor outside of described centrifugal pump is provided with cooling circuit, it is characterized in that: in axial direction be provided with axis hole in the motor shaft of described centrifugal pump and make a cooling of the inner formation of said motor shaft cavity; The exhalant canal of the water pump of described centrifugal pump is communicated with the outside cooling circuit of described centrifugal pump motor through the inner cooling cavity of described motor shaft again, forms a cooling circuit.
2. a kind of low noise water-cooled centrifugal pump as claimed in claim 1; It is characterized in that: the inner cooling cavity bottom of described motor shaft is provided with water outlet and is communicated with the outside cooling circuit of centrifugal pump motor; Also be provided with return pipe in this cooling cavity; One end of described return pipe is arranged in this cooling cavity, and the other end is communicated with the exhalant canal of water pump as the water intake of this cooling cavity.
3. a kind of low noise water-cooled centrifugal pump as claimed in claim 2; It is characterized in that: described return pipe is fixed and is suspended from the inner cooling cavity of motor shaft through a fixed plate, and the bottom of return pipe is through being arranged at a pressing plate and a seal ring fixing seal of cooling cavity bottom.
4. like claim 2 or 3 described a kind of low noise water-cooled centrifugal pumps, it is characterized in that: the internal diameter of described axis hole is more than or equal to the twice of the external diameter of described return pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101489952A CN102808779A (en) | 2011-06-03 | 2011-06-03 | Low-noise water-cooled centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101489952A CN102808779A (en) | 2011-06-03 | 2011-06-03 | Low-noise water-cooled centrifugal pump |
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| Publication Number | Publication Date |
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| CN102808779A true CN102808779A (en) | 2012-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011101489952A Pending CN102808779A (en) | 2011-06-03 | 2011-06-03 | Low-noise water-cooled centrifugal pump |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103244436A (en) * | 2013-05-29 | 2013-08-14 | 江苏大学 | Low-noise electric centrifugal pump |
| CN109826801A (en) * | 2019-03-21 | 2019-05-31 | 上海上涵自动化科技有限公司 | A kind of water cooling pump |
| CN110594160A (en) * | 2018-06-12 | 2019-12-20 | 大井泵浦工业股份有限公司 | Water-cooled pump structure |
| CN113530845A (en) * | 2021-08-18 | 2021-10-22 | 苏州伊美达泵业有限公司 | Ultra-low temperature pump |
| CN114165458A (en) * | 2021-11-26 | 2022-03-11 | 田娜 | Shielding type pipeline pump for urban heating based on water-cooling principle |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2009849A (en) * | 1977-12-09 | 1979-06-20 | Hermetic Pumpen Gmbh | Centrifugal pumps |
| CN1412444A (en) * | 2001-10-10 | 2003-04-23 | 文东喆 | Capacitor-start induction electric pump |
| CN200971879Y (en) * | 2006-05-22 | 2007-11-07 | 上海熊猫机械(集团)有限公司 | Water-cooled energy-saving water pump |
| CN201184324Y (en) * | 2008-02-22 | 2009-01-21 | 上海熊猫机械(集团)有限公司 | Water-cooling energy-saving water pump |
| CN101655095A (en) * | 2009-08-21 | 2010-02-24 | 深圳益宝实业有限公司 | Electric water pump |
| CN201547025U (en) * | 2008-12-11 | 2010-08-11 | 上海熊猫机械(集团)有限公司 | Double-suction pump shaft cold circulating mechanism |
-
2011
- 2011-06-03 CN CN2011101489952A patent/CN102808779A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2009849A (en) * | 1977-12-09 | 1979-06-20 | Hermetic Pumpen Gmbh | Centrifugal pumps |
| CN1412444A (en) * | 2001-10-10 | 2003-04-23 | 文东喆 | Capacitor-start induction electric pump |
| CN200971879Y (en) * | 2006-05-22 | 2007-11-07 | 上海熊猫机械(集团)有限公司 | Water-cooled energy-saving water pump |
| CN201184324Y (en) * | 2008-02-22 | 2009-01-21 | 上海熊猫机械(集团)有限公司 | Water-cooling energy-saving water pump |
| CN201547025U (en) * | 2008-12-11 | 2010-08-11 | 上海熊猫机械(集团)有限公司 | Double-suction pump shaft cold circulating mechanism |
| CN101655095A (en) * | 2009-08-21 | 2010-02-24 | 深圳益宝实业有限公司 | Electric water pump |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103244436A (en) * | 2013-05-29 | 2013-08-14 | 江苏大学 | Low-noise electric centrifugal pump |
| CN103244436B (en) * | 2013-05-29 | 2016-01-20 | 江苏大学 | A kind of Low-noise electric centrifugal pump |
| CN110594160A (en) * | 2018-06-12 | 2019-12-20 | 大井泵浦工业股份有限公司 | Water-cooled pump structure |
| CN109826801A (en) * | 2019-03-21 | 2019-05-31 | 上海上涵自动化科技有限公司 | A kind of water cooling pump |
| CN113530845A (en) * | 2021-08-18 | 2021-10-22 | 苏州伊美达泵业有限公司 | Ultra-low temperature pump |
| CN114165458A (en) * | 2021-11-26 | 2022-03-11 | 田娜 | Shielding type pipeline pump for urban heating based on water-cooling principle |
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Application publication date: 20121205 |