CN201461452U - Shielding electric pump with inner circulation structure for lithium bromide absorptive air conditioner - Google Patents

Shielding electric pump with inner circulation structure for lithium bromide absorptive air conditioner Download PDF

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Publication number
CN201461452U
CN201461452U CN2009200755345U CN200920075534U CN201461452U CN 201461452 U CN201461452 U CN 201461452U CN 2009200755345 U CN2009200755345 U CN 2009200755345U CN 200920075534 U CN200920075534 U CN 200920075534U CN 201461452 U CN201461452 U CN 201461452U
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CN
China
Prior art keywords
impeller
pump
bearing
pump housing
rotor
Prior art date
Application number
CN2009200755345U
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Chinese (zh)
Inventor
韩元平
Original Assignee
上海新沪电机厂有限公司
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Application filed by 上海新沪电机厂有限公司 filed Critical 上海新沪电机厂有限公司
Priority to CN2009200755345U priority Critical patent/CN201461452U/en
Application granted granted Critical
Publication of CN201461452U publication Critical patent/CN201461452U/en

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Abstract

The utility model discloses a shielding electric pump with an inner circulation structure for a lithium bromide absorptive air conditioner. The shielding electric pump comprises a pump body and a shielding motor connected with the pump body, wherein an upper and a lower graphite bearings are respectively provided with grooves, a gap between a rotor shielding sleeve and a stator shielding sleeve are communicated with a cavity body between a front bearing block and an impeller dorsal ring through the groove of the lower graphite bearing, and is communicated with the inner cavity of a back bearing block through the groove of the upper graphite bearing, the cavity body between the front bearing block and the impeller dorsal ring is communicated with an impeller chamber through an impeller balance hole, a circulating through-hole penetrates through a rotor shaft, one end of the circulating through-hole is communicated with an inlet of the pump body, and the other end thereof is communicated with the inner cavity of the back bearing block, simultaneously, the pump body further consists of an inducing wheel which is arranged on the front end of an impeller. The shielding pump body improves the vapor etched residual time, improves performances, reduces the energy consumption, simultaneously, improves the mass transfer coefficient and replacement frequency of lithium bromide, saves cost, and improves the efficiency of an air conditioning set.

Description

Lithium bromide absorption type air conditioner shielded electric-pump with inner circulation structure
Technical field:
The utility model relates to a kind of shielded electric-pump, particularly a kind of lithium bromide absorption type air conditioner shielded electric-pump with inner circulation structure.
Background technique:
Canned motorpump belongs to centrifugal pump, and its working principle is: by 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 shielded electric-pump that existing market has, because of adopting the outer circulation structure, of rotor assembly itself is heavier, 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, reliable row is poor, easily 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 easily causes liquid guiding tube to damage, and increased the weight of the load of motor during operation, shortened the working life of motor.
The model utility content:
This is at the outer circulation structure lithium bromide absorption type air conditioner shielded electric-pump of present use, of rotor assembly itself is heavier, 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, reliable row is poor, easily cause outer circulating tube to leak, problems such as working life is low provide a kind of novel lithium bromide absorption type air conditioner shielded electric-pump, satisfy the needs of aspects such as economy, performance.
In order to achieve the above object, the utility model adopts following technological scheme:
Lithium bromide absorption type air conditioner shielded electric-pump with inner circulation structure, form by the shield electric machine that the pump housing is connected with the pump housing, described shield electric machine comprises outer ring stator module and outer ring rotor assembly, be with stator can on the described stator, be with Rotor can on the described rotor, has the gap between stator can and the Rotor can, the two ends of described rotor are provided with, following two axle sleeves, on the arranged outside of rotor axle sleeve has, following two graphite bearings, before the arranged outside of graphite bearing has, rear bearing block, rear bearing block has an inner chamber, and rear bearing block has one to cross liquid bath; The described 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, 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;
Be respectively equipped with groove on the described upper and lower graphite bearing, gap between described Rotor can and the stator can is communicated with cavity between front-end bearing pedestal and the impeller back of the body choma by the groove that is arranged on down on the graphite bearing, and being communicated with of the inner chamber by the groove on the last graphite bearing and rear bearing block; Described front-end bearing pedestal is communicated with blade wheel chamber by impeller balance hole with the cavity that impeller is carried on the back between the choma; Described 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, to form circulation loop in; Also comprise inducer on the described pump housing simultaneously, it is arranged on the impeller front end.
Further, described pump housing import is radial inlet, and described pump housing outlet is laterally outlet.
Further again, the groove on the described upper and lower graphite bearing comprises V-type groove, straight trough or the spiral chute that is arranged on the graphite bearing.
Further, described shield electric machine also comprises upper and lower metal ripple tooth composite gland bush, and described metal ripple tooth composite gland bush down is arranged between the motor and the pump housing, and the described metal ripple tooth composite gland bush of going up is arranged between rear bearing block and the support.
The utlity model has following characteristics according to what technique scheme obtained:
1, the axle sleeve in this structure, thrust-bearing and graphite bearing three samples combination and the sliding bearing that forms greatly reduces noise;
2, impeller front end inducer cuts the big lithium-bromide solution of viscosity, reduces viscosity, improves by 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, saved 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, improved the probability that incoagulable gas enters, greatly improve the mass transfer coefficient of lithium bromide and changed the frequency, save cost, improved the efficient of air-conditioning unit, the energy-saving and environmental protection of playing.
8, greatly reduce rotor and acted on 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 by 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, alleviated the load temperature rise raising that motor brings greatly because of axial force, reduce the aging of motor, prolonged the working life of motor.
Description of drawings:
Further specify the utility model below in conjunction with the drawings and specific embodiments.
Fig. 1 is a structural representation of the present utility model.
Embodiment:
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
The lithium bromide absorption type air conditioner shielded electric-pump that the utility model provides, its structure be as shown in Figure 1:
Mainly the shield electric machine that 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, 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 the existing outer circulation structure lithium bromide absorption type air conditioner existing problem of shielded electric-pump, the utility model has provided circulation through hole 17 on rotor shaft 29, one 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 be respectively equipped with groove on upper and lower graphite bearing 24,12, 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 by the groove that is arranged on down on the graphite bearing 12, and being communicated with of the inner chamber 19 by the groove on the last graphite bearing 24 and rear bearing block 18, and described front-end bearing pedestal 10 is communicated with blade wheel chamber 8 by 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 utility model further improves, and pump housing import 1 is radial inlet, and pump housing outlet 7 is laterally outlet.Such structure decrease the volume of pump, thereby reduced the overall volume of air-conditioning unit, saved cost.
The utility model is provided with inducer at the impeller front end simultaneously.Inducer cuts the big lithium-bromide solution of viscosity, reduces viscosity, improves by 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 utility model also is provided with upper and lower metal ripple tooth composite gland bush 20,21 at shield electric machine, wherein descend metal ripple tooth composite gland bush 21 to be arranged between the motor and the pump housing 2, be 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, improved the probability that incoagulable gas enters, greatly improve the mass transfer coefficient of lithium bromide and changed the frequency, save cost, improved the efficient of air-conditioning unit, the energy-saving and environmental protection of playing.
It is as follows to obtain the concrete running principle of the utility model according to technique scheme:
During work, electric pump starts the back lithium bromide from pump housing import 1 input, by cutting type inducer 3, after entering 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. again because there is certain pressure difference at impeller balance hole 9 places in the blade wheel chamber 8, can upwards carry lithium bromide, the liquid bath of crossing through front-end bearing pedestal 10 reaches in the inner chamber of front-end bearing pedestal 10, again by in the front-end bearing pedestal 10 down graphite bearing 12 enter into shield electric machine inner chamber 22. simultaneously in this course medium to the Lower shaft sleeve 11 of surfacing nickel-base alloy material, friction between following thrust disc 13 and the following graphite bearing 12 is fully flowed lubricated, it is fixed to rely on then, rotor two housings 16, gap 14 formed pressure differences between 15, be transported to rear bearing block inner chamber 19 by going up graphite bearing 24 in the rear bearing block 18, and to the last thrust disc 23 on the rear bearing block 18, sufficient lubrication is carried out in friction between last graphite bearing 24 and the Upper shaft sleeve 25. the interior circulation through hole 17 of the rotor shaft inside of lithium bromide from be connected rear bearing block 18, enter impeller inlet 4 low pressure areas, big circulation loop reciprocation cycle of whole formation.
More than show and described basic principle of the present utility model and major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.

Claims (4)

1. the lithium bromide absorption type air conditioner shielded electric-pump that has inner circulation structure, form by the shield electric machine that the pump housing is connected with the pump housing, described shield electric machine comprises outer ring stator module and outer ring rotor assembly, be with stator can on the described stator, be with Rotor can on the described rotor, has the gap between stator can and the Rotor can, the two ends of described rotor are provided with, following two axle sleeves, on the arranged outside of rotor axle sleeve has, following two graphite bearings, before the arranged outside of graphite bearing has, rear bearing block, rear bearing block has an inner chamber, and rear bearing block has one to cross liquid bath; The described 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, 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,
Be respectively equipped with groove on the described upper and lower graphite bearing, gap between described Rotor can and the stator can is communicated with cavity between front-end bearing pedestal and the impeller back of the body choma by the groove that is arranged on down on the graphite bearing, and being communicated with of the inner chamber by the groove on the last graphite bearing and rear bearing block; Described front-end bearing pedestal is communicated with blade wheel chamber by impeller balance hole with the cavity that impeller is carried on the back between the choma; Described 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, to form circulation loop in; Also comprise inducer on the described pump housing simultaneously, it is arranged on the impeller front end.
2. the lithium bromide absorption type air conditioner shielded electric-pump with inner circulation structure according to claim 1 is characterized in that described pump housing import is radial inlet, and described pump housing outlet is laterally outlet.
3. the lithium bromide absorption type air conditioner shielded electric-pump with inner circulation structure according to claim 1 is characterized in that the groove on the described upper and lower graphite bearing comprises V-type groove, straight trough or the spiral chute that is arranged on the graphite bearing.
4. the lithium bromide absorption type air conditioner shielded electric-pump with inner circulation structure according to claim 1, it is characterized in that, described shield electric machine also comprises upper and lower metal ripple tooth composite gland bush, described metal ripple tooth composite gland bush down is arranged between the motor and the pump housing, and the described metal ripple tooth composite gland bush of going up is arranged between rear bearing block and the support.
CN2009200755345U 2009-07-30 2009-07-30 Shielding electric pump with inner circulation structure for lithium bromide absorptive air conditioner CN201461452U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009200755345U CN201461452U (en) 2009-07-30 2009-07-30 Shielding electric pump with inner circulation structure for lithium bromide absorptive air conditioner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009200755345U CN201461452U (en) 2009-07-30 2009-07-30 Shielding electric pump with inner circulation structure for lithium bromide absorptive air conditioner

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CN201461452U true CN201461452U (en) 2010-05-12

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011011982A1 (en) * 2009-07-30 2011-02-03 上海新沪电机厂有限公司 Canned motor pump for enclosed circulation system
CN101988514B (en) * 2009-07-30 2012-10-03 上海新沪电机厂有限公司 Lithium bromide absorptive shielding electric pump for air conditioner
CN103206401A (en) * 2012-01-17 2013-07-17 珠海格力电器股份有限公司 Centrifugal compressor and refrigeration equipment containing same
CN103206399A (en) * 2012-01-17 2013-07-17 珠海格力电器股份有限公司 Centrifugal compressor and refrigeration equipment containing same
CN103216462A (en) * 2012-01-20 2013-07-24 乌鲁木齐金穗剑技术开发有限公司 Pump port structure
CN103742418A (en) * 2013-01-08 2014-04-23 摩尔动力(北京)技术股份有限公司 Pure working medium impeller mechanism
CN107605916A (en) * 2017-08-28 2018-01-19 江苏大学 A kind of impeller nut for improving canned motor pump cavitation performance
WO2018166198A1 (en) * 2017-03-16 2018-09-20 珠海格力电器股份有限公司 Bearing housing assembly and air conditioner therewith

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011011982A1 (en) * 2009-07-30 2011-02-03 上海新沪电机厂有限公司 Canned motor pump for enclosed circulation system
CN101988514B (en) * 2009-07-30 2012-10-03 上海新沪电机厂有限公司 Lithium bromide absorptive shielding electric pump for air conditioner
CN103206401A (en) * 2012-01-17 2013-07-17 珠海格力电器股份有限公司 Centrifugal compressor and refrigeration equipment containing same
CN103206399A (en) * 2012-01-17 2013-07-17 珠海格力电器股份有限公司 Centrifugal compressor and refrigeration equipment containing same
CN104912841B (en) * 2012-01-17 2017-10-27 珠海格力电器股份有限公司 Centrifugal compressor and the refrigeration plant comprising the centrifugal compressor
CN103206401B (en) * 2012-01-17 2015-12-16 珠海格力电器股份有限公司 Centrifugal compressor and comprise the chiller plant of this centrifugal compressor
CN104912841A (en) * 2012-01-17 2015-09-16 珠海格力电器股份有限公司 Centrifugal compressor and refrigeration equipment containing same
CN103206399B (en) * 2012-01-17 2015-09-16 珠海格力电器股份有限公司 Centrifugal compressor and comprise the chiller plant of this centrifugal compressor
CN103216462B (en) * 2012-01-20 2016-02-24 乌鲁木齐金穗剑技术开发有限公司 A kind of pump port structure
CN103216462A (en) * 2012-01-20 2013-07-24 乌鲁木齐金穗剑技术开发有限公司 Pump port structure
CN103742418A (en) * 2013-01-08 2014-04-23 摩尔动力(北京)技术股份有限公司 Pure working medium impeller mechanism
CN103742418B (en) * 2013-01-08 2016-10-05 摩尔动力(北京)技术股份有限公司 Pure working medium impeller mechanism
WO2018166198A1 (en) * 2017-03-16 2018-09-20 珠海格力电器股份有限公司 Bearing housing assembly and air conditioner therewith
CN107605916A (en) * 2017-08-28 2018-01-19 江苏大学 A kind of impeller nut for improving canned motor pump cavitation performance
CN107605916B (en) * 2017-08-28 2019-10-01 江苏大学 A kind of impeller nut improving canned motor pump cavitation performance

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Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C56 Change in the name or address of the patentee

Owner name: HEFEI XINHU SHIELD PUMP CO., LTD.

Free format text: FORMER NAME: HEFEI DAYUAN PUMP INDUSTRY CO., LTD.

CP03 Change of name, title or address

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: 230001 Anhui city of Hefei province high tech Zone Technology Park Bai Yan Yang Road No. 1

Patentee before: Hefei Dayuan Pumps Industrial Co., Ltd.

C41 Transfer of patent application or patent right or utility model
TR01 Transfer of patent right

Effective date of registration: 20130308

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: 230088 Anhui city of Hefei province high tech Zone Technology Park Bai Yan Yang Road No. 1

Patentee before: Hefei Xinhu Canned Motor Pump Co., Ltd.

CX01 Expiry of patent term
CX01 Expiry of patent term

Granted publication date: 20100512