CN101988509A - Canned motor pump for air conditioning unit with double circulation system - Google Patents
Canned motor pump for air conditioning unit with double circulation system Download PDFInfo
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- CN101988509A CN101988509A CN2009100556219A CN200910055621A CN101988509A CN 101988509 A CN101988509 A CN 101988509A CN 2009100556219 A CN2009100556219 A CN 2009100556219A CN 200910055621 A CN200910055621 A CN 200910055621A CN 101988509 A CN101988509 A CN 101988509A
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- outer circulation
- pump
- canned motor
- conditioning unit
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Abstract
The invention discloses a canned motor pump for an air conditioning unit with a double circulation system. The canned motor pump consists of a pump body and a canned motor; a canned motor shell is connected with the pump body through a flange; a rotor shaft is arranged in a rotor and is provided with a rotor shaft through hole; an external circulation system is arranged on the outer side of the canned motor shell; an external circulation water inlet and an external circulation water outlet are formed on an external circulation cavity, the external circulation water inlet is connected with one end of a cooling water pipe, and the external circulation water outlet is connected with the other end of the cooling water pipe; the cooling water pipe is from the air conditioning unit; the external circulation cavity is adhered to the outer side of the canned motor shell; and the rotor shaft through hole is communicated with the pump body and is independent of the external circulation cavity. The temperature of the canned motor is reduced, the ageing of a canned motor insulation system caused by overhigh temperature is reduced, the surrounding environmental temperature is reduced, the capability of transmitting a medium with higher temperature of the canned motor is improved, the service life of the canned motor is ensured, external fins of the canned motor shell are reduced, the structure is simplified, and the cost is reduced.
Description
Technical field
The present invention relates to a kind of shielded electric-pump, be specifically related to a kind of air-conditioning unit shielded electric-pump with binary cycle system.
Background technique
The pipeline shielded electric-pump is with its absolute no leaks, is widely used in liquid such as conveying acid in the industry such as oil, chemical industry, refrigeration, food, national defence, atomic power, alkali, inflammable and explosive, severe toxicity.An important indicator weighing pipeline shielded electric-pump functional reliability is the mean free error time, mean free error time is that the longer the better, and the important spare part that determines average Mean time to failure is the working life of shield electric machine and pivot friction pair, so the stressed of strict control shield electric machine and radial friction pair is the key that improves pipeline shielded electric-pump reliability.
A kind of air-conditioning unit shielded electric-pump with binary cycle system is made of the pump housing and shield electric machine, and the pump housing comprises pump housing water intake, impeller and pump housing water outlet, establishes impeller cavity in the described impeller; Shield electric machine comprises rotor and stator.Establish rotor shaft in the rotor, rotor shaft passes bearing, the rotation of rotor shaft impeller.The liquid that impeller will be carried the pump housing pumps from pump housing water outlet through impeller cavity from the inspiration of pump housing water intake.
From the maintenance status of user feedback and returned work as can be known, the pipeline shielded electric-pump is because the wearing and tearing of friction pair cause product rejection, and the wearing and tearing between the thrust bearing friction pair are particularly serious mostly.Thereby the key point that addresses this problem is the lubrication friction pair, thereby improves the reliability of whole unit.
Also have more serious problem be shield electric machine when using for a long time temperature raise, shielded electric-pump can not be in normal operating mode; Motor temperature is too high to cause the accelerated ageing of electrical machine insulation system, has influenced the working life of shield electric machine; The ambient temperature on every side of shielded electric-pump raises in addition, and is unfavorable to the shielded electric-pump long-time running.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of air-conditioning unit shielded electric-pump with binary cycle system, to solve the existing existing many deficiencys of shielded electric-pump.This invention is applicable in the industry such as oil, chemical industry, refrigeration, food, national defence, atomic power liquid such as carrying acid, alkali, inflammable and explosive, severe toxicity.
The technical problem that will solve required for the present invention can be achieved through the following technical solutions:
A kind of air-conditioning unit shielded electric-pump with binary cycle system is made of the pump housing and shield electric machine, and described shield electric machine shell adopts flange to be connected with the pump housing, and the described pump housing comprises pump housing water intake, impeller and pump housing water outlet, establishes impeller cavity in the described impeller; Described shield electric machine comprises rotor and stator, and described stator twines stator coil outward, it is characterized in that,
Be provided with rotor shaft in the described rotor, described rotor shaft is provided with the rotor shaft through hole;
Described shield electric machine shell arranged outside has an external circulating system;
Described external circulating system comprises outer circulation cavity, outer circulation water intake and outer circulation water outlet;
Described outer circulation cavity is provided with outer circulation water intake and outer circulation water outlet, and outer circulation water intake and water-cooling tube one end join, and the outer circulation water outlet and the water-cooling tube the other end join.
Described outer circulation cavity is attached to the outside of shield electric machine shell.
Described rotor shaft through hole is communicated with the pump housing, and rotor shaft through hole and outer circulation cavity are independently.
Described water-cooling tube is the water-cooling tube of air-conditioning unit, and described outer circulation cavity is communicated with the water-cooling tube of air-conditioning unit.
Rotor shaft through hole and outer circulation cavity are independently, and institute's circuit liquid is also different with temperature.By the rotor shaft through hole be that the liquid that pump is carried mainly is lubricious friction pair, be the air-conditioning unit water that is used for cooling off and mainly be the cooling shield electric machine by the outer circulation cavity, guarantee that shield electric machine normally moves.The present invention is by partly being provided with the external circulation cavity body device at shield electric machine, long-term steady running in the time of can fed sheet of a media, and simple in structure, effect is remarkable.
Beneficial effect of the present invention:
1, reduced the temperature of shield electric machine, guaranteed that shielded electric-pump is under the normal operating mode to work;
2, greatly reduce because of motor temperature is too high and cause the accelerated ageing of electrical machine insulation system, the working life of having guaranteed shield electric machine.
3, greatly reduced the ambient temperature on every side of shielded electric-pump, guaranteed that it can be in long-term operation continuously.
4, improve the ability that shielded electric-pump is carried the medium of higher temperature.
5, reduced the external fin of shield electric machine shell, reduced cost, energy saving makes the shielded electric-pump structure simpler.
6, removed and utilize the efficiency of shielded electric-pump own to lower the temperature, improved the performance of electric pump.
Description of drawings
Further specify the present invention below in conjunction with the drawings and specific embodiments.
Fig. 1 is a structural representation of the present invention.
Number in the figure:
1 is the pump housing, and 11 is pump housing water intake, and 12 is pump housing water outlet, and 13 is impeller, and 14 is impeller cavity; 2 is shield electric machine, and 21 is the shield electric machine shell, and 22 is rotor, and 23 is rotor shaft, and 24 is bearing, and 25 is stator coil, and 26 is the rotor shaft through hole; 3 is flange; 4 is external circulating system, and 41 are the outer circulation water intake, and 42 are the outer circulation water outlet, and 44 are the outer circulation cavity.
Embodiment
In order to make technological means of the present invention, creation characteristic, to reach purpose and effect is easy to understand,, further set forth the present invention below in conjunction with concrete diagram.
A kind of air-conditioning unit shielded electric-pump with binary cycle system as shown in Figure 1, is made of the pump housing 1 and shield electric machine 2, and shield electric machine 2 adopts flange 3 to be connected with the pump housing 1.
The pump housing 1 comprises pump housing water intake 11, impeller 13 and pump housing water outlet 12, establishes impeller cavity 14 in the impeller 13.This shielded electric-pump
Shield electric machine 2 comprises shield electric machine shell 21, rotor 22 and stator, stator twines stator coil 25 outward, shield electric machine shell 21 is a tubular, shield electric machine shell 21 leading edges are the ring structure that expands outwardly, in ring structure flange 3 is set partly, shield electric machine shell 21 is connected with the pump housing 1, is about to shield electric machine 2 and couples together with the pump housing 1.
A kind of embodiment is provided with rotor shaft 23 in the rotor 22, and rotor shaft 23 is provided with rotor shaft through hole 26, and rotor shaft through hole 26 is arranged at vertically (promptly axial) of rotor shaft, and rotor shaft through hole 26 is concentric with the axle center of rotor shaft 23.
The arranged outside of shield electric machine shell 21 has an external circulating system 4; External circulating system comprises outer circulation cavity 44, outer circulation water intake 41 and outer circulation water outlet 42.
Outer circulation cavity 44 is attached to the outside of shield electric machine shell 21.Outer circulation cavity 44 is a tubular structure, is that tubular structure with dissection is set furtherly.Outer circulation cavity 44 is provided with outer circulation water intake 41 and outer circulation water outlet 42, and outer circulation water intake 41 joins with water-cooling tube one end, and outer circulation water outlet 42 joins with the water-cooling tube the other end.Water-cooling tube is the water-cooling tube of air-conditioning unit, and outer circulation cavity 44 is communicated with the water-cooling tube of air-conditioning unit.
Rotor shaft through hole 26 is communicated with the pump housing 1, and rotor shaft through hole 26 is independently with outer circulation cavity 44.
Rotor shaft through hole 26 is independently with outer circulation cavity 44, and institute's circuit liquid is also different with temperature.By rotor shaft through hole 26 be that the liquid that pump is carried mainly is lubricious friction pair, be the air-conditioning unit water that is used for cooling off and mainly be cooling shield electric machine 2 by outer circulation cavity 44, guarantee that shield electric machine normally moves.The present invention is by being provided with 4 for external circulating system in shield electric machine 2 parts, long-term steady running in the time of can fed sheet of a media, and simple in structure, effect is remarkable.
Compare with existing shielded electric-pump, the present invention has reduced the temperature of shield electric machine, guarantees that shielded electric-pump is under the normal operating mode to work; Reduction causes the accelerated ageing of electrical machine insulation system, the working life of having guaranteed shield electric machine because of motor temperature is too high; Reduced the ambient temperature on every side of shielded electric-pump, guaranteed that it can be in long-term operation continuously.
The present invention improves the ability that shielded electric-pump is carried the medium of higher temperature.
Remove the pattern of utilizing the efficiency of shielded electric-pump own to lower the temperature, improved the performance of electric pump.
Simultaneously, reduced the external fin of shield electric machine shell, reduced cost, energy saving makes the shielded electric-pump structure simpler.
More than show and described basic principle of the present invention, major character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present invention; the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (3)
1. the air-conditioning unit shielded electric-pump with binary cycle system is made of the pump housing and shield electric machine, and described shield electric machine shell adopts flange to be connected with the pump housing, and the described pump housing comprises pump housing water intake, impeller and pump housing water outlet, establishes impeller cavity in the described impeller; Described shield electric machine comprises rotor and stator, and described stator twines stator coil outward, it is characterized in that, is provided with rotor shaft in the described rotor, and described rotor shaft is provided with the rotor shaft through hole; Described shield electric machine shell arranged outside has an external circulating system; Described external circulating system comprises outer circulation cavity, outer circulation water intake and outer circulation water outlet; Described outer circulation cavity is provided with outer circulation water intake and outer circulation water outlet, and outer circulation water intake and water-cooling tube one end join, and the outer circulation water outlet and the water-cooling tube the other end join.
2. a kind of air-conditioning unit shielded electric-pump with binary cycle system according to claim 1, it is characterized in that: described outer circulation cavity is attached to the outside of shield electric machine shell.
3. a kind of air-conditioning unit shielded electric-pump according to claim 1 with binary cycle system, it is characterized in that: described water-cooling tube is the water-cooling tube of air-conditioning unit, described outer circulation cavity is communicated with the water-cooling tube of air-conditioning unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100556219A CN101988509A (en) | 2009-07-30 | 2009-07-30 | Canned motor pump for air conditioning unit with double circulation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100556219A CN101988509A (en) | 2009-07-30 | 2009-07-30 | Canned motor pump for air conditioning unit with double circulation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101988509A true CN101988509A (en) | 2011-03-23 |
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ID=43745225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100556219A Pending CN101988509A (en) | 2009-07-30 | 2009-07-30 | Canned motor pump for air conditioning unit with double circulation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101988509A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102735422A (en) * | 2012-06-25 | 2012-10-17 | 上海交通大学 | Device for studying gap flow field of shielding sleeve of shielding motor |
| CN105909532A (en) * | 2016-07-12 | 2016-08-31 | 合肥新沪屏蔽泵有限公司 | Water-cooled shield pump |
-
2009
- 2009-07-30 CN CN2009100556219A patent/CN101988509A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102735422A (en) * | 2012-06-25 | 2012-10-17 | 上海交通大学 | Device for studying gap flow field of shielding sleeve of shielding motor |
| CN105909532A (en) * | 2016-07-12 | 2016-08-31 | 合肥新沪屏蔽泵有限公司 | Water-cooled shield pump |
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Application publication date: 20110323 |