CN101988514B - Lithium bromide absorptive shielding electric pump for air conditioner - Google Patents
Lithium bromide absorptive shielding electric pump for air conditioner Download PDFInfo
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- CN101988514B CN101988514B CN200910055630A CN200910055630A CN101988514B CN 101988514 B CN101988514 B CN 101988514B CN 200910055630 A CN200910055630 A CN 200910055630A CN 200910055630 A CN200910055630 A CN 200910055630A CN 101988514 B CN101988514 B CN 101988514B
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Abstract
The invention discloses a lithium bromide absorptive shielding electric pump for an air conditioner, comprising a pump body and a shielding motor connected with the pump body, wherein a circulation through hole is penetrated in a rotor shaft; one end of the circulation through hole is communicated with the inlet of the pump body while the other end is communicated with the inner cavity of a rear bearing pedestal; grooves are respectively arranged on an upper graphite bearing and a lower graphite bearing; the gap between a rotor shielding sleeve and a stator shielding sleeve is communicated with the cavity between a front bearing pedestal and an impeller back mouth ring through the groove on the lower graphite bearing, and communicated with the inner cavity of the rear bearing pedestal through the groove on the upper graphite bearing; and the cavity between the front bearing pedestal and the impeller back mouth ring is connected with an impeller chamber through an impeller balance hole. The lithium bromide absorptive shielding electric pump for the air conditioner greatly improves the cavitation overage, reduces the energy consumption, enhances the mass transfer coefficient and the change frequency of the lithium bromide, saves the cost and increases the efficiency of the air conditioning unit.
Description
Technical field:
The present invention relates to a kind of shielded electric-pump, particularly a kind of lithium bromide absorption type air conditioner is used shielded electric-pump.
Background technique:
Canned motorpump belongs to centrifugal pump, and its working principle is: lean on the impeller of high speed rotating, liquid has obtained energy to have improved pressure under the inertial centrifugal force effect.Characteristics are that motor and pump adopt integral structure, all adopt static seal, make electric pump not have leakage fully; Totally-enclosed, no leakage structure can be carried the poisonous and harmful liquid substance; Adopt the shielding water-cooled machine and cancelled cooling fan to make the quiet operation of this pump low noise, be applicable to the demanding occasion of ambient noise; Adopt the lubricated graphite sliding bearing of fed sheet of a media, make running noises lower and need not hand oiling, reduced maintenance cost; Vertical structure can be installed on the pipeline as valve, and is quick and easy for installation, and when maintenance only need motor and impeller extraction are got final product, need not to remove pipeline.Can cooperate vibration damper or beam installation and operation, make electric pump noise when operation lower.
Canned motorpump is applicable to: the geothermal heat pump air-conditioner circulation; Lithium bromide air-conditioning unit; The heat supply heating circulation; The fire water pressurization system; The tap water boosting system; Poisonous and harmful liquid is carried.
The lithium bromide absorption type air conditioner that existing market has is used shielded electric-pump; Because of adopting the outer circulation structure; Of rotor assembly itself is heavier, and it is high thereby cause occurring that the graphite bearing wear rate is too high, the self-adjustment capability of axial force is poor to act on graphite bearing pressure in the lower bearing, and reliable row is poor; Be prone to cause outer circulating tube to leak, problem such as working life is low.And the structure of outer circulation reduced performance and efficient because of circulating at the pump discharge place, installs, handling process is prone to cause liquid guiding tube to damage, and increased the weight of the load of motor during operation, shortened the working life of motor.
Summary of the invention:
This uses shielded electric-pump to the outer circulation structure lithium bromide absorption type air conditioner that uses at present; Of rotor assembly itself is heavier, and it is high thereby cause occurring that the graphite bearing wear rate is too high, the self-adjustment capability of axial force is poor to act on graphite bearing pressure in the lower bearing, and reliable row is poor; Be prone to cause outer circulating tube to leak; Problems such as working life is low provide a kind of novel lithium bromide absorption type air conditioner to use shielded electric-pump, satisfy the needs of aspects such as economy, performance.
In order to achieve the above object, the present invention adopts following technological scheme:
A kind of lithium bromide absorption type air conditioner is used shielded electric-pump, is made up of the shield electric machine that the pump housing is connected with the pump housing, and said shield electric machine comprises outer ring stator module and outer ring rotor assembly; Be with stator can on the said stator; Be with Rotor can on the said rotor, have the gap between stator can and the Rotor can, the two ends of said rotor are provided with upper and lower two axle sleeves; Arranged outside at rotor axle sleeve has upper and lower two graphite bearings; Arranged outside at graphite bearing has forward and backward bearing support, and rear bearing block has an inner chamber, and rear bearing block has one to cross liquid bath; The said pump housing comprises pump housing import, pump housing outlet and the blade wheel chamber that communicates with pump housing import, pump housing outlet; Described blade wheel chamber has the impeller that is driven by shield electric machine; Blade wheel chamber has an impeller inlet and an impeller outlet; The impeller root has an impeller balance hole, and the impeller back side has impeller back of the body choma, between front-end bearing pedestal and the impeller back of the body choma cavity is arranged;
Said rotor shaft has provided the circulation through hole, and an end of this circulation through hole is communicated in pump housing import, and the other end is communicated with the inner chamber of rear bearing block; Be respectively equipped with groove on the said upper and lower graphite bearing; Gap between said Rotor can and the stator can is communicated with cavity between front-end bearing pedestal and the impeller back of the body choma through the groove that is arranged on down on the graphite bearing; And be communicated with the inner chamber of rear bearing block through the groove on the last graphite bearing, and said front-end bearing pedestal links to each other with blade wheel chamber through impeller balance hole with the cavity that impeller is carried on the back between the choma.
Said pump housing import is an axial inlet, and said pump housing outlet is radially outlet.
Groove on the said upper and lower graphite bearing comprises V-type groove, straight trough or the spiral chute that is arranged on the graphite bearing.
Also comprise inducer on the said pump housing, it is arranged on the impeller front end.
Said shield electric machine also comprises upper and lower metal ripple tooth composite gland bush, and said metal ripple tooth composite gland bush down is arranged between the motor and the pump housing, and the said metal ripple tooth composite gland bush of going up is arranged between rear bearing block and the support.
The present invention who obtains according to technique scheme has following characteristics:
1, the axle sleeve in this structure, thrust-bearing and three kinds of sliding bearings that make up and form of graphite bearing greatly reduce noise;
2, impeller front end inducer cuts the big lithium-bromide solution of viscosity, reduces viscosity, improves through the impeller quantity delivered, has greatly improved cavitation when surplus, and raising property has reduced energy consumption; Reduce the load of motor, prolong the working life of motor;
Taken away the heat that produces when a part of motor moves when 3, lithium bromide is through the gap between rotor two housings in the circulation loop;
4, the pump housing is radial inlet, laterally the structure decrease of outlet the volume of pump, thereby reduced the overall volume of air-conditioning unit, practiced thrift cost;
5, the rotor shaft through hole gross weight that alleviated rotor also reduces simultaneously the pressure that rotor acts on the graphite bearing in the step; Prolonged the working life of graphite bearing; The axial force adjustment capability that has improved the shielded electric-pump oneself has reduced the load of motor simultaneously, has prolonged the working life of shielded electric-pump;
6, cross liquid parts material and all adopt stainless steel material and resistant material, effectively reduce the corrosion leakage probability;
7, to have good compression resilience, load performance, high voltage performance and sealability leak-down rate extremely low for metal ripple tooth composite gland bush; Improve and guaranteed the degree of vacuum of air-conditioning unit greatly; Improve the probability that incoagulable gas gets into, greatly improved the mass transfer coefficient and the replacing frequency of lithium bromide, practiced thrift cost; Improved the efficient of air-conditioning unit, the energy-saving and environmental protection of playing.
8, greatly reduce rotor and acted on the graphite bearing pressure in the rear bearing block, reduced the wear rate of graphite bearing, improved service life; The through hole of the pressure of the upper bearing bracket inner chamber in the circulation loop through rotor shaft directly unloads and is pressed onto the impeller inlet place; Reduce effect downwards axial force; Improved the self-adjustment capability of axial force; Alleviate the load temperature rise raising that motor brings greatly because of axial force, reduced the aging of motor, prolonged the working life of motor.
Description of drawings:
Further specify the present invention below in conjunction with accompanying drawing and embodiment.
Fig. 1 is a structural representation of the present invention.
Embodiment:
For technological means, creation characteristic that the present invention is realized, reach purpose and effect and be easy to understand and understand, below in conjunction with concrete diagram, further set forth the present invention.
Lithium bromide absorption type air conditioner provided by the invention is used shielded electric-pump, and its structure is as shown in Figure 1:
The shield electric machine that mainly is connected with the pump housing by the pump housing is formed.Wherein shield electric machine comprises outer ring stator module and outer ring rotor assembly, is with stator can 16 on the stator, is with Rotor can 15 on the rotor, has gap 14 between stator can 16 and the Rotor can 15.The two ends of rotor are provided with upper and lower two axle sleeves 25,11; Arranged outside at upper and lower rotor axle sleeve has upper and lower two graphite bearings 24,12; Arranged outside at upper and lower two graphite bearings has forward and backward bearing support 10,18 accordingly; Rear bearing block 18 has an inner chamber 19, also has one to cross liquid bath on the rear bearing block.
The pump housing 2 comprises pump housing import 1, pump housing outlet 7 and the blade wheel chamber 8 that communicates with pump housing import, pump housing outlet; Blade wheel chamber 8 has the impeller 5 that is driven by shield electric machine; Blade wheel chamber 8 has an impeller inlet 4 and an impeller outlet 6; Impeller 5 roots have an impeller balance hole 9, and impeller 5 back sides have impeller back of the body choma 26, between front-end bearing pedestal 10 and the impeller back of the body choma 26 cavity 27 are arranged.
For solving existing outer circulation structure lithium bromide absorption type air conditioner with the existing problem of shielded electric-pump, the present invention has provided circulation through hole 17 on rotor shaft 29, and an end of this circulation through hole 17 is communicated in pump housing import 1, and the other end is communicated with the inner chamber 19 of rear bearing block; Simultaneously on upper and lower graphite bearing 24,12, be respectively equipped with groove, this groove can be V-type groove, straight trough or spiral chute; Gap 14 between Rotor can 15 and the stator can 16 is communicated with cavity 27 between front-end bearing pedestal 10 and the impeller back of the body choma 26 through the groove that is arranged on down on the graphite bearing 12; And being communicated with of the inner chamber 19 through the groove on the last graphite bearing 24 and rear bearing block 18; And said front-end bearing pedestal 10 is communicated with blade wheel chamber 8 through impeller balance hole 9 with the cavity 27 that impeller is carried on the back between the choma 26, like this at interior circulation loop of the inner formation of shielded electric-pump.Structure can effectively solve present existing in prior technology problem in this.The gross weight that while rotor shaft through hole has alleviated rotor also reduces the pressure that rotor acts on the graphite bearing in the step simultaneously; Prolonged the working life of graphite bearing; The axial force adjustment capability that has improved the shielded electric-pump oneself has reduced the load of motor simultaneously, has prolonged the working life of shielded electric-pump.
The present invention further improves, and is axial inlet with pump housing import 1, and pump housing outlet 7 is radially outlet.Such structure decrease the volume of pump, thereby reduced the overall volume of air-conditioning unit, practiced thrift cost.
The present invention simultaneously is provided with inducer at the impeller front end.Inducer cuts the big lithium-bromide solution of viscosity, reduces viscosity, improves through the impeller quantity delivered, has greatly improved cavitation when surplus, and raising property has reduced energy consumption; Reduce the load of motor, prolong the working life of motor.
The present invention also is provided with upper and lower metal ripple tooth composite gland bush 20,21 at shield electric machine, wherein descends metal ripple tooth composite gland bush 21 to be arranged between the motor and the pump housing 2, is arranged between rear bearing block 18 and the support 28 and go up metal ripple tooth composite gland bush 20.It is extremely low that metal ripple tooth composite gland bush has good compression resilience, load performance, high voltage performance and sealability leak-down rate; Improve and guaranteed the degree of vacuum of air-conditioning unit greatly; Improve the probability that incoagulable gas gets into, greatly improved the mass transfer coefficient and the replacing frequency of lithium bromide, practiced thrift cost; Improved the efficient of air-conditioning unit, the energy-saving and environmental protection of playing.
It is following to obtain the concrete running principle of the present invention according to technique scheme:
During work; Electric pump starts the back lithium bromide from pump housing import 1 input; Through cutting type inducer 3; After getting into impeller inlet 3 low pressure areas, because the rotation inducer of motor and the formed certain working pressure of rotation of impeller blade, lithium bromide can flow to the pump housing through pump housing volute flow passage 2 from impeller outlet 6 and export 7.Because there is certain pressure difference at impeller balance hole 9 places in the blade wheel chamber 8, can upwards carry lithium bromide again, reach in the inner chamber of front-end bearing pedestal 10 through the liquid bath of crossing of front-end bearing pedestal 10, again through in the front-end bearing pedestal 10 down graphite bearing 12 enter into shield electric machine inner chamber 22.Medium fully flows lubricated to the friction between the Lower shaft sleeve 11 of surfacing nickel-base alloy material, following thrust disc 13 and the following graphite bearing 12 in this course simultaneously; Rely on stator and rotor two housings 16, the 14 formed pressure differences of the gap between 15 then; Be transported to rear bearing block inner chamber 19 through last graphite bearing 24 in the rear bearing block 18, and sufficient lubrication is carried out in the friction between the last thrust disc 23 on the rear bearing block 18, last graphite bearing 24 and the Upper shaft sleeve 25.The inner interior circulation through hole 17 of the rotor shaft of lithium bromide from be connected rear bearing block 18 gets into impeller inlet 4 low pressure areas, big circulation loop reciprocation cycle of whole formation.
More than show and described basic principle of the present invention and 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 explains principle of the present invention; Under the prerequisite that does not break away from spirit and scope of the invention, the present invention also has various changes and modifications, and these variations and improvement all fall in the scope of the invention that requires protection.The present invention requires protection domain to be defined by appending claims and equivalent thereof.
Claims (3)
1. a lithium bromide absorption type air conditioner is used shielded electric-pump, is made up of the shield electric machine that the pump housing is connected with the pump housing, and said shield electric machine comprises outer ring stator module and outer ring rotor assembly; Be with stator can on the said stator; Be with Rotor can on the said rotor, have the gap between stator can and the Rotor can, the two ends of said rotor are provided with upper and lower two axle sleeves; Arranged outside at rotor axle sleeve has upper and lower two graphite bearings; Arranged outside at graphite bearing has forward and backward bearing support, and rear bearing block has an inner chamber, and rear bearing block has one to cross liquid bath; The said pump housing comprises pump housing import, pump housing outlet and the blade wheel chamber that communicates with pump housing import, pump housing outlet; Described blade wheel chamber has the impeller that is driven by shield electric machine; Blade wheel chamber has an impeller inlet and an impeller outlet; The impeller root has an impeller balance hole, and the impeller back side has impeller back of the body choma, between front-end bearing pedestal and the impeller back of the body choma cavity is arranged; It is characterized in that,
Rotor shaft in the said pump housing has provided the circulation through hole, and an end of this circulation through hole is communicated in pump housing import, and the other end is communicated with the inner chamber of rear bearing block; Be respectively equipped with groove on the said upper and lower graphite bearing; Gap between said Rotor can and the stator can is communicated with cavity between front-end bearing pedestal and the impeller back of the body choma through the groove that is arranged on down on the graphite bearing; And be communicated with the inner chamber of rear bearing block through the groove on the last graphite bearing, and said front-end bearing pedestal links to each other with blade wheel chamber through impeller balance hole with the cavity that impeller is carried on the back between the choma;
Said pump housing import is an axial inlet, and said pump housing outlet is radially outlet;
Groove on the said upper and lower graphite bearing comprises V-type groove, straight trough or the spiral chute that is arranged on the graphite bearing.
2. a kind of lithium bromide absorption type air conditioner according to claim 1 is used shielded electric-pump, it is characterized in that, also comprises inducer on the said pump housing, and it is arranged on the impeller front end.
3. a kind of lithium bromide absorption type air conditioner according to claim 1 is used shielded electric-pump; It is characterized in that; Said shield electric machine also comprises upper and lower metal ripple tooth composite gland bush; Said metal ripple tooth composite gland bush down is arranged between the motor and the pump housing, and the said metal ripple tooth composite gland bush of going up is arranged between rear bearing block and the support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910055630A CN101988514B (en) | 2009-07-30 | 2009-07-30 | Lithium bromide absorptive shielding electric pump for air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910055630A CN101988514B (en) | 2009-07-30 | 2009-07-30 | Lithium bromide absorptive shielding electric pump for air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101988514A CN101988514A (en) | 2011-03-23 |
| CN101988514B true CN101988514B (en) | 2012-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910055630A Active CN101988514B (en) | 2009-07-30 | 2009-07-30 | Lithium bromide absorptive shielding electric pump for air conditioner |
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| CN (1) | CN101988514B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102735422B (en) * | 2012-06-25 | 2015-07-01 | 上海交通大学 | Device for studying gap flow field of shielding sleeve of shielding motor |
| CN103912524A (en) * | 2014-04-25 | 2014-07-09 | 无锡市安化屏蔽电泵厂 | Shield electric pump for conveying media easy to solidify and crystallize |
| CN105863763B (en) * | 2016-05-24 | 2018-02-27 | 杭州汽轮动力集团有限公司 | Utilize the shielding expanding machine of organic rankie cycle generating |
| CN106368752B (en) * | 2016-11-21 | 2017-12-15 | 国家***第一海洋研究所 | A kind of ammonia turbine installation for ocean thermal energy conversion |
| CN106917828B (en) * | 2017-03-16 | 2019-08-30 | 珠海格力电器股份有限公司 | A kind of bearing block assembly and its air conditioner |
| CN108869324A (en) * | 2018-08-02 | 2018-11-23 | 珠海格力电器股份有限公司 | Liquid-supplying system and its shielded electric pump |
| CN110030193A (en) * | 2019-05-16 | 2019-07-19 | 上海创科泵业制造有限公司 | Multi-stage shield pump and the water-carriage system for applying it |
| CN110307164A (en) * | 2019-07-25 | 2019-10-08 | 中国船舶重工集团公司第七0四研究所 | Condensate pump flow passage components structure with inducer |
| CN111810411A (en) * | 2020-08-10 | 2020-10-23 | 大连海密梯克泵业有限公司 | Multistage shielding pump with balance disc structure |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2530072Y (en) * | 2001-08-31 | 2003-01-08 | 黄健 | Centrifugal pump |
| CN201225304Y (en) * | 2008-03-05 | 2009-04-22 | 山东洪业化工集团有限公司 | Shield electric pump without conveying medium lubrication bearing |
| CN201461452U (en) * | 2009-07-30 | 2010-05-12 | 上海新沪电机厂有限公司 | Shielding electric pump with inner circulation structure for lithium bromide absorptive air conditioner |
-
2009
- 2009-07-30 CN CN200910055630A patent/CN101988514B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2530072Y (en) * | 2001-08-31 | 2003-01-08 | 黄健 | Centrifugal pump |
| CN201225304Y (en) * | 2008-03-05 | 2009-04-22 | 山东洪业化工集团有限公司 | Shield electric pump without conveying medium lubrication bearing |
| CN201461452U (en) * | 2009-07-30 | 2010-05-12 | 上海新沪电机厂有限公司 | Shielding electric pump with inner circulation structure for lithium bromide absorptive air conditioner |
Non-Patent Citations (2)
| Title |
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| JP特开2001-304180A 2001.10.31 |
| JP特开平5-240195A 1993.09.17 |
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| CN101988514A (en) | 2011-03-23 |
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Owner name: HEFEI XINHU CANNED MOTOR PUMP CO., LTD. Free format text: FORMER OWNER: XINHU DYNAMO PLANT CO., LTD., SHANGHAI Effective date: 20130228 |
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Free format text: CORRECT: ADDRESS; FROM: 201318 NANHUI, SHANGHAI TO: 230088 HEFEI, ANHUI PROVINCE |
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Effective date of registration: 20130228 Address after: 230088 Anhui city of Hefei province high tech Zone Technology Park Bai Yan Yang Road No. 1 Patentee after: Hefei Xinhu Canned Motor Pump Co., Ltd. Address before: 201318 No. 333 East Cambridge Road, Nanhui District, Shanghai Patentee before: Shanghai Xinhu Electric Machine Factory Co., Ltd. |