CN104052199B - Compressor, the method and apparatus for protecting compressor - Google Patents
Compressor, the method and apparatus for protecting compressor Download PDFInfo
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- CN104052199B CN104052199B CN201410096448.8A CN201410096448A CN104052199B CN 104052199 B CN104052199 B CN 104052199B CN 201410096448 A CN201410096448 A CN 201410096448A CN 104052199 B CN104052199 B CN 104052199B
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Abstract
A kind of compressor is provided with, and the compressor includes single-phase motor and protector.Motor driven compressor structure and with rotor and stator.Stator includes aluminium winding.Protector is attached to stator and is configured to, when the input voltage to motor of power supply is less than the threshold voltage value at the level being arranged between the minimum operating voltages of compressor and the mistake thermal voltage of compressor, motor and power supply be disconnected.The overtemperature that thermal voltage is crossed with motor is corresponding.Threshold voltage value is arranged on minimum operating voltages and crossed at the level between thermal voltage.Protector includes margin level, and to cause threshold voltage to subtract, margin level was more than thermal voltage and threshold voltage is less than minimum operating voltages plus margin level.
Description
The cross reference of related application
The U.S. Provisional Application No.61/791,330 submitted this application claims on March 15th, 2013 rights and interests.This application
Complete disclosure is incorporated herein.
Technical field
Present disclosure is related to air compressor motor, and more particularly relates to protect with aluminium winding motor
The system and method for compressor.
Background technology
This part provides the background information for being related to present disclosure, and it is not necessarily prior art.
Refrigeration and air-conditioning system generally comprise compressor, condenser, expansion valve or its equality unit and evaporator.These
Part order couples to limit continuous flow channel.Cold-producing medium stream is handed over through system and between liquid phase and vapour phase or gas phase
Replace.In refrigeration systems used a variety of type of compressor include but is not limited to scroll compressor, reciprocating compressor,
Screw compressor and rotary compressor, such as vane compressor.
In scroll compressor, motor drives turbine structure via the suitable drive shaft fixed to motor rotor
One in part.Traditionally, Compressor Manufacturing business uses copper winding in the motor.Recently, the manufacturer of scroll compressor
The motor of the combination with copper winding Yu some aluminium windings is gone to.However, aluminium winding has the resistivity higher than copper.Cause
This, the decline of the efficiency of motor will be caused using aluminium winding instead of excessive copper winding.
The content of the invention
This part provides the General Introduction of disclosure, and this part is not meant to comprehensively disclose the complete of disclosure
Portion's scope or whole features.
A kind of compressor is provided with, the compressor includes single-phase motor and protector.Motor driven compressor
Structure and with rotor and stator.Stator includes aluminium winding.Protector is attached to stator and is configured in power supply
Input voltage to motor is less than the level being arranged between the minimum operating voltages of compressor and the mistake thermal voltage of compressor
During the threshold voltage value at place, motor and power supply are disconnected.The overtemperature that thermal voltage is crossed with motor is corresponding.Threshold voltage value
It is arranged on minimum operating voltages and crosses at the level between thermal voltage.Protector includes margin level to cause threshold voltage
Subtract margin level and be more than thermal voltage and threshold voltage and be less than minimum operating voltages plus margin level.
The other field of application will become obvious according to description provided herein.Description in this general introduction and specifically show
Example be meant merely for illustrate and be not limiting as scope of the present disclosure.
Brief description of the drawings
Present disclosure will be more fully understood according to detailed description and accompanying drawing, wherein：
Fig. 1 is the compressor according to present disclosure；
Fig. 2 is the stator module according to present disclosure；
Fig. 3 is to show voltage and the curve map of temperature；
Fig. 4 is the flow chart of the method according to present disclosure；
Fig. 5 is the flow chart of the method according to present disclosure；And
Fig. 6 is the compressor according to present disclosure.
Through some views of accompanying drawing, corresponding label represents corresponding part.
Embodiment
Example embodiment is more fully described referring now to accompanying drawing.
With reference to Fig. 1, scroll compressor 10 includes cylindrical housings 12 and single-phase motor 40, single-phase motor 40 by with
It is set to using drive shaft 30 to drive orbital scroll member 52.Motor 40 for example can be monocyclic-start induction motor.Or, electricity
Motivation can be synchronous motor.In addition, motor 40 can be multiphase motor, such as threephase motor.
Motor 40 includes stator module 42, winds the winding 44 of stator module 42 and is coupled to the rotor of drive shaft 30
43.Specifically, winding 44 is formed by making wire on the tooth lopping in stator module 42.
As described in this article, the wire for winding 44 includes aluminium.In addition, as utilized herein, aluminium should
When being understood to also include being used as wire to form the suitable aluminium alloy of motor winding 44.
With reference to Fig. 2, stator module 42 includes the stator core 90 of the lamination 92 comprising stacking.
In another example, described in commonly assigned following U.S. Patent application with the single-phase induction electricity with aluminium winding
The scroll compressor of motivation：Entitled " the Scroll Compressor Having a Single submitted on November 30th, 2012
Phase Induction Motor with Aluminum Windings " U.S. Patent application No.61/731,618, and
The U.S. that there is identical title and U.S. Patent application No.61/731,618 priority is required submitted on March 15th, 2013
State patent application No.13/835,087.The complete disclosure of above-mentioned application is incorporated herein by reference.
Referring again to Fig. 1, input voltage is sent to compressor 10 and motor 40 via power line 102.
Control module 100 can be attached to the compressor housing 12 of compressor 10.Power line 102 may extend through protection
Module 100 is so that input voltage to be sent to the motor 40 inside compressor housing 12.
Control module 100 can include the input electricity that monitoring is sent to compressor 10 and motor 40 via power line 102
The voltage sensor 110 of pressure.Described below, voltage sensor 110 can be used for test purpose to determine motor 40
Certain voltage characteristic and parameter.
In addition, as shown in figure 1, compressor 10 can include the temperature sensor 120 of the temperature of monitoring motor winding 44.
Described below, temperature sensor 120 can be used for test purpose to determine certain temperature characterisitic and parameter of motor 40.
, can be in no voltage sensor 110 and temperature sensor after test, and as described further below
Compressor 10 is operated in the case of 120.For example, showing the pressure without voltage sensor 110 and temperature sensor 120 in Fig. 6
Contracting machine 10.It is described below, the compressor shown in Fig. 6 include motor protector 200, this also figure 2 illustrates.
As the input voltage for being input to motor reduces, the temperature of motor tends to rise.This pass is shown in Fig. 3
System.As shown, for higher voltage, motor temperature is relatively low, and for relatively low voltage, motor
Temperature is of a relatively high.
In addition, such as compared with the similar motor using copper winding, it is substantially the same in every other operating condition
In the case of, decline for given voltage, generally will be than similar electronic using copper winding using the motor of aluminium winding
Machine has higher corresponding increase in temperature.
For the voltage change of the input electric power transmitted in given installation environment, motor is typically configured with specified
Minimum or low-voltage（“LV”）, it is referred to as " necessary working voltage " or " minimum operating voltages ".For example, for given manufacture
The specification of motor may require motor to meet specification and allow for working under specified LV.With reference to Fig. 3, show
LV.In addition, LV values can be the predetermined percentage of the rated voltage of motor 40, such as 90%.For example, for rated voltage
For 200V motor, corresponding LV values can be 180V.In other words, in most cases, LV can be with 10% less than electronic
Machine rated voltage.However, it is possible to use other predetermined percentages.
For example, following form is included for the rated voltage of three different exemplary compression electric motors and " necessary
Operation " or LV voltages, including the value of two versions of 60Hz and 50Hz is directed under applicable circumstances：
In addition, in order to prevent from damaging motor 40, can set or determine the maximum temperature threshold for motor 40
（“Max.Temp.”）.For example, Max.Temp. can be determined based on the isolation of the motor 40 in compressor 10.In other words,
Max.Temp. the characteristic and ability of shielding system can be depended on, shielding system includes used specific paint, used
Specific nylon wire etc..For example, can be in 280 degrees Fahrenheits for the Max.Temp. of the motor 40 in given compressor
To in the range of 320 degrees Fahrenheits.
In order to prevent damaging compressor 10 and air compressor motor 40, the operating temperature of motor 40, which may remain in, to be less than
Max.Temp. at level.In other words, it is possible to implement protection device such as temperature of the motor protector 200 in motor
Degree terminates the work of motor before reaching Max.Temp..
Because the relation between temperature and voltage, and due to the particular characteristics of compressor, test be determined for
Max.Temp. corresponding specific voltage or approximate voltage range.Specifically, voltage corresponding with Max.Temp. levels can be with
Referred to as " cross thermal voltage "（“OV”）.With reference to Fig. 3, OV is shown.Difference between LV and OV is referred to as Δ V.In every other work bar
In the case that part is substantially the same, for the motor with aluminium winding, Δ V, which is much smaller than, is directed to the similar electricity with copper winding
The Δ V of motivation.
Continue the rated operational voltage with 200V, 180V LV and in the range of 280 degrees Fahrenheits to 320 degrees Fahrenheits
Max.Temp. the example of motor 40, the corresponding OV for the motor 40 can be about 170V to 172V.
With reference to Fig. 4, show for determining that the method 400 and method 400 of OV voltage levels start 402.
In 404, the initial operating voltage for motor 40 have selected.Initial operating voltage can be motor 40
Normal voltage in operating voltage range.For example, initial operating voltage can be corresponding with rated operational voltage.What is continued the above shows
Example, initial operating voltage can be 200V.
In 406, the temperature of monitoring motor is carried out using such as temperature sensor 120.In 408, by the electronic of sensing
Machine temperature is compared with Max.Temp..When the motor temperature of sensing is not more than Max.Temp., method is carried out to 410.
In 410, method determines whether motor temperature has reached stable state.For example, when motor temperature is in spy
Specified temp is rested in the timing phase or during close to specified temp, then motor temperature reaches stable state.In 410, work as electricity
Motivation temperature has reached after stable state that method is recycled back to 406 and continues monitoring motor temperature.
In 410, after motor temperature has reached equilibrium temperature, method is carried out to 412.In 412, method reduces
Input voltage and carry out to 406 with monitoring motor temperature again.
Method is carried out until method detects motor temperature more than Max.Temp. in 408 by this way.408
In, when motor temperature is more than Max.Temp., method carries out to 414 and records current voltage as predetermined OV voltages electricity
It is flat.Then method terminates 416.In addition, when using motor 40 in compressor 10, compressor 10 can be in method 400
Period works under maximum functional loading condition.
With reference to Fig. 5, the method 500 and method for determining the parameter value for motor protector are shown
500 start at 502.
In 504, it is determined that for the LV of motor.As described above, LV level is provided as the specification of manufacturer
A part.In this way, LV level can be determined by reference to the operations specifications of the manufacturer for motor.
In 506, it is determined that for the OV of motor.It is, for example, possible to use true above in conjunction with the method 400 described by Fig. 4
Determine OV.
After LV level and OV level is determined, LV level and OV level that can be based on determination in 508 determine pin
To the threshold voltage and nargin of motor protector 200, to cause protector 200 in LV voltage levels and OV voltages
Threshold voltage between level（V-Thresh）Place suitably stops the work of compressor.Method terminates 510.
In the motor 40 using aluminium winding, difference, the i.e. Δ V between LV and OV is relatively shorter than for having copper winding
The Δ V that can be by comparison of similar motor.Sentenced really therefore, may be more difficult to V-Thresh being set in appropriate level
Protect compressor 10 to be operated at LV level, but be stopped before voltage is reduced to OV level.Therefore, V-Thresh level
The level of be just below LV level is may be set in, but still close to LV level.In addition, motor protector 200
There must be appropriate nargin to ensure that motor protector 200 suitably stops compressor at V-Thresh level
Work, but allow to be operated at LV level, and still do not allow in the case of work in compressor 10 and motor 40
Voltage is reduced to OV level.
Generally, V-Thresh level can be set as the voltage of 4V to the 8V less than LV.The example continued the above, for example,
For the OV of LV and 170V to 172V with 180V compressor 10 and motor 40, V-Thresh level can be 175V extremely
176V.In addition, the nargin for protector 200 can be 1V to 2V.
As shown in Fig. 2 protector 200 can be bimetal strip, it is based on the electric current and electricity for flowing through motor winding
The temperature of motivation 40 can quickly be opened and disconnect motor 40 with input power line 102.In this manner, protector
Device 200 can design with appropriate material and resistance to meet the V-Thresh and nargin specification of determination.Due to for tool
There is the relatively small Δ V of the motor of aluminium winding, compared with the motor with copper winding, give relatively small Δ V feelings
Under condition, protector 200 must design with appropriate V-Thresh and margin level to ensure compressor 10 and motor
40 continue to operate at LV, but are stopped before input voltage reaches OV voltage levels.
As an example, protector 200 can be designed with V-Thresh level, it is in the middle of LV level and OV level
I.e. at Δ V midpoint.In addition, the 25% of about Δ V can be set for the margin level of protector 200.In this mode
Under, protector 200 can operate to ensure that compressor 10 and motor 40 are operated at LV level, and in about Δ
The work of compressor 10 and motor 40 is disconnected or stopped at V midpoint plus or minus Δ V 25% level.Continue the above
Example, wherein LV be 180V and in the case that OV is 172V, motor protector 200 can design the V- with 176V
The nargin of Thresh level and 2V.In this manner, motor protector 200 in the separated of 176V and 174V and can stop
The only work of compressor.
Method terminates at 510.
As mentioned above, with reference to Fig. 6, the compressor 10 with protector 200 is shown, according to this skill
Art is implemented and designs compressor 10.As shown, as described above, Fig. 6 compressor 10 does not include being used to test
Voltage sensor 110 and temperature sensor 120.
It is described above be merely exemplary and be not intended to limit disclosure, its application or purposes.Can be with a variety of
Form implements the broad teachings of disclosure.Therefore, although present disclosure includes particular example, but should not limit this public affairs
The actual range of content is opened, this is due to that other modifications will become after study accompanying drawing, specification and appended claims
Substantially.As utilized herein, at least one in phrase A, B and C is understood to mean is patrolled using nonexcludability
Collect OR logic（A or B or C）.It should be appreciated that one or more steps in method can not change in the disclosure
In the case of the principle of appearance in a different order（Or simultaneously）Perform.
In this application, including following definition, term module can be replaced with term circuit.Term module can be related to
The description below, it is a part for the description below or including the description below：Application specific integrated circuit（ASIC）；Numeral, simulation or mixed
Matched moulds plan/Digital Discrete circuit；Numeral, simulation or hybrid analog-digital simulation/digital integrated electronic circuit；Combinational logic circuit；Field-programmable
Gate array（FPGA）；Perform the processor of code（Shared, special or group）；Store by the memory of the code of computing device
（Shared, special or group）；Other suitable hardware componenies of described function are provided；Or in such as on-chip system above
Some or all of combination.
As term code used above can include software, firmware and/or microcode, and can be related to program,
Routine, function, class and/or object.Term shared processor includes performing the list of some or all of codes from multiple modules
Individual processor.Term group processor includes combining other computing device from some or all of of one or more modules
The processor of code.Term shared memory includes the single memory of some or all of codes of the storage from multiple modules.
Term group memory includes combining depositing for some or all of codes of the other memory storage from one or more modules
Reservoir.Term memory can be the subset of term computer-readable medium.Term computer-readable medium is not included by being situated between
Transient state electric signal and electromagnetic signal that matter is propagated, and it can be considered that be tangible and non-transient.Non-transient tangible calculating
The non-limiting example of machine computer-readable recording medium includes nonvolatile memory, volatile memory, magnetic memory and optical memory.
Apparatus and method described herein can be by by one of one or more computing devices or more
Multiple computer programs are partly or entirely implemented.Computer program is readable including being stored at least one non-transient tangible computer
Processor-executable instruction on medium.Computer program can also include and/or the data dependent on storage.
Claims (15)
1. a kind of compressor, including：
The single-phase motor of compression mechanism is driven, the motor has rotor and stator, and the stator includes aluminium winding；And
Protector, the protector is attached to the stator, and the protector is configured to arriving in power supply
The motor and the power supply are disconnected when the input voltage of the motor is less than threshold voltage value, the threshold voltage value
It is arranged at the level between the minimum operating voltages of the compressor and the mistake thermal voltage of the compressor, it is described to cross thermal voltage
Overtemperature with the motor is corresponding；
Wherein, the protector includes margin level to cause the threshold voltage to subtract the margin level more than described
Thermal voltage is crossed, and causes the threshold voltage to be less than the minimum operating voltages plus the margin level.
2. compressor according to claim 1, wherein, the threshold voltage value is arranged on the minimum operating voltages and institute
Stated the midpoint between thermal voltage.
3. compressor according to claim 2, wherein, the margin level is arranged on as the minimum operating voltages and institute
Stated at the 25% poor value between thermal voltage.
4. compressor according to claim 1, wherein, the margin level is arranged on as the minimum operating voltages and institute
Stated at the 25% poor value between thermal voltage.
5. compressor according to claim 1, wherein, the compressor is scroll compressor.
6. a kind of method for protecting compressor, including：
Compression mechanism is driven using the single-phase motor with rotor and stator, the stator includes aluminium winding；And
Protector is used when the input voltage to the motor of power supply is less than threshold voltage value by the motor
Disconnected with the power supply, the threshold voltage value is arranged on the minimum operating voltages of the compressor and the overheat of the compressor
At level between voltage, the thermal voltage excessively is corresponding with the overtemperature of the motor；
Wherein, the protector includes margin level to cause the threshold voltage to subtract the margin level more than described
Thermal voltage is crossed, and causes the threshold voltage to be less than the minimum operating voltages plus the margin level.
7. method according to claim 6, wherein, the threshold voltage value be arranged on the minimum operating voltages with it is described
The midpoint crossed between thermal voltage.
8. method according to claim 7, wherein, the margin level be arranged on for the minimum operating voltages with it is described
Cross at the 25% poor value between thermal voltage.
9. method according to claim 6, wherein, the margin level be arranged on for the minimum operating voltages with it is described
Cross at the 25% poor value between thermal voltage.
10. method according to claim 6, wherein, the compressor is scroll compressor.
11. a kind of equipment for protecting compressor, including：
Protector, the protector is configured for attachment to the single-phase motor of the compression mechanism of driving compressor
Stator, the motor has rotor and the stator including aluminium winding, and the protector is further configured in electricity
The motor and the power supply are disconnected when the input voltage to the motor in source is less than threshold voltage value, the threshold value
Magnitude of voltage is arranged at the level between the minimum operating voltages of the compressor and the mistake thermal voltage of the compressor, the mistake
Thermal voltage is corresponding with the overtemperature of the motor；
Wherein, the protector includes margin level to cause the threshold voltage to subtract the margin level more than described
Thermal voltage is crossed, and causes the threshold voltage to be less than the minimum operating voltages plus the margin level.
12. equipment according to claim 11, wherein, the threshold voltage value is arranged on the minimum operating voltages and institute
Stated the midpoint between thermal voltage.
13. equipment according to claim 12, wherein, the margin level is arranged on as the minimum operating voltages and institute
Stated at the 25% poor value between thermal voltage.
14. equipment according to claim 11, wherein, the margin level is arranged on as the minimum operating voltages and institute
Stated at the 25% poor value between thermal voltage.
15. equipment according to claim 11, wherein, the compressor is scroll compressor.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201361791330P | 2013-03-15 | 2013-03-15 | |
| US61/791,330 | 2013-03-15 | ||
| US14/193,049 US9407194B2 (en) | 2013-03-15 | 2014-02-28 | System and method for protection of a compressor with an aluminum winding motor |
| US14/193,049 | 2014-02-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104052199A CN104052199A (en) | 2014-09-17 |
| CN104052199B true CN104052199B (en) | 2017-09-08 |
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ID=51504700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410096448.8A Active CN104052199B (en) | 2013-03-15 | 2014-03-14 | Compressor, the method and apparatus for protecting compressor |
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| Country | Link |
|---|---|
| CN (1) | CN104052199B (en) |
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|---|---|---|---|---|
| US7081734B1 (en) * | 2005-09-02 | 2006-07-25 | York International Corporation | Ride-through method and system for HVACandR chillers |
| CN102522928A (en) * | 2011-11-25 | 2012-06-27 | 江苏白雪电器股份有限公司 | Motor starter, starting method of motor and compressor |
| CN204068575U (en) * | 2013-03-15 | 2014-12-31 | 艾默生环境优化技术有限公司 | Compressor and the equipment for the protection of compressor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7689330B2 (en) * | 2004-12-01 | 2010-03-30 | Ise Corporation | Method of controlling engine stop-start operation for heavy-duty hybrid-electric and hybrid-hydraulic vehicles |
-
2014
- 2014-03-14 CN CN201410096448.8A patent/CN104052199B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7081734B1 (en) * | 2005-09-02 | 2006-07-25 | York International Corporation | Ride-through method and system for HVACandR chillers |
| CN102522928A (en) * | 2011-11-25 | 2012-06-27 | 江苏白雪电器股份有限公司 | Motor starter, starting method of motor and compressor |
| CN204068575U (en) * | 2013-03-15 | 2014-12-31 | 艾默生环境优化技术有限公司 | Compressor and the equipment for the protection of compressor |
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| Publication number | Publication date |
|---|---|
| CN104052199A (en) | 2014-09-17 |
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