CN102444580A - Digital compressor with direct start brushless permanent magnet motor - Google Patents
Digital compressor with direct start brushless permanent magnet motor Download PDFInfo
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- CN102444580A CN102444580A CN2010105378901A CN201010537890A CN102444580A CN 102444580 A CN102444580 A CN 102444580A CN 2010105378901 A CN2010105378901 A CN 2010105378901A CN 201010537890 A CN201010537890 A CN 201010537890A CN 102444580 A CN102444580 A CN 102444580A
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- thermomechanical components
- digital compression
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Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
- F01C21/08—Rotary pistons
- F01C21/0809—Construction of vanes or vane holders
- F01C21/0818—Vane tracking; control therefor
- F01C21/0854—Vane tracking; control therefor by fluid means
- F01C21/0863—Vane tracking; control therefor by fluid means the fluid being the working fluid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C11/00—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations
- F04C11/008—Enclosed motor pump units
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
- F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/008—Hermetic pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/02—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
- F04C27/005—Axial sealings for working fluid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
- F04C28/24—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/0042—Driving elements, brakes, couplings, transmissions specially adapted for pumps
- F04C29/0085—Prime movers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
- F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
- F04C18/0215—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
- F04C18/356—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member
- F04C18/3562—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member the inner and outer member being in contact along one line or continuous surfaces substantially parallel to the axis of rotation
- F04C18/3564—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member the inner and outer member being in contact along one line or continuous surfaces substantially parallel to the axis of rotation the surfaces of the inner and outer member, forming the working space, being surfaces of revolution
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/40—Electric motor
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Compressor (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
A digital compressor with a direct start brushless permanent magnet motor includes a housing, a compression mechanism and a drive structure disposed within the housing. The compression mechanism includes first and second scroll members movable relative to each other between a loaded condition and a unloaded condition. The drive mechanism is in driving engagement with at least one of the scroll members for orbiting movement of one of the scroll members relative to the other of the scroll members in a generally circular path without rotation and includes a brushless permanent magnet motor which is directly started. The direct start thirty permanent magnet motor includes a plurality of permanent magnets mounted on a motor rotor core body and extending generally axially thereof. The digital compressor assembly provides improved overall system performance to meet high efficiency standards.
Description
Technical field
The present invention relates generally to a kind of digital compression thermomechanical components that is configured to provide variable capacity (variable capacity) adjusting.More particularly, the present invention relates to a kind of digital compressor, comprise the compressing mechanism with the mechanical component that can between loading and unloading state and non-loading shape body, move, wherein this compressing mechanism is by the drive mechanism that comprises the across-the-line starting brushless permanent magnet electromotor.
Background technique
Those of ordinary skill in the art can know that compressor is generally used in the various commercial Application.For example, in order to regulate the temperature in room, the frequent use of some conventional air-conditioning systems is not to be exactly the compressor of turning off with maximum capacity work.Can use a thermostat to measure the temperature of ambient atmosphere and starting compressor when the temperature of atmosphere departs from the temperature of requirement far away around.
A known way of the cooling requirement that is used for satisfy changing is the capacity (capacity of the compressor) that can change (or adjusting) compressor.The compressor of effective particular type is a scroll compressor generally speaking in this field, the compression working fluid thereby wherein a pair of scroll element cooperatively interacts (for example, the freezing mixture of liquid state or gaseous state).One scroll compressor generally includes two main element groups: the mechanical compression unit and the motor drive that is used for moving at least one scrollwork that comprise a plurality of scrollworks.Can operate these primary components--compression set or drive unit---in any, regulate the capacity of compressor.
Usually, the operating motor drive unit is regulated the capacity of compressor.For example, according to variable electric motor for compressor rotating speed principles transformation technology (inverter technology), wherein electrical signal is sent to electric motor for compressor so that it quickens or slow down according to allowance load (room load) to rotate.If the allowance load is higher, electric motor for compressor rotates and transmits higher capacity with fast speeds; On the contrary, if the allowance load is lower, electric motor for compressor rotates to rotate and to transmit lower output than low speed.
Therefore, the routine of electric motor for compressor rotating speed changes in the compressor assembly that has been included in two-speed motor or full speed-variable motor.These two known motor are satisfactory in some aspects, but also have a lot of defectives.For example, this two-speed motor manufacturing is very complicated and often only can produce the results of property that meets the demands.This full speed-variable motor often obtains to surpass the systematic function that increases to some extent of two-speed motor, but needs complicacy and expensive drive unit to continuously change motor speed.The complexity that these existing systems are used for changing electric motor for compressor speed not only needs extra manufacture cost, also can cause and safeguard and/or integrity problem.
Summary of the invention
The present invention provides a kind of being configured to be used for the digital compression thermomechanical components that variable capacity is regulated, and the compression set of wherein can operating machine is regulated the capacity of compressor.For example, in digital scroll compressor, thereby each mechanical scrollwork of compressing mechanism relative to each other moves the capacity of regulating compressor at the motor that drives this compression set during with constant-speed operation generally.
Numeral scroll compressor technology is according to the loading and unloading principle operation of scrollwork.When motor during with constant-speed operation generally, scrollwork periodically meshes and separate so that provides " full capacity " of compression set and the operating time of " no capacity ".Cause infinite variable speed effectively capacity output the average time of loading and unloading state.
Eliminate some existing, as to rely on the conventional regulating system that changes of electric motor for compressor rotating speed complexity, for example, can reduce manufacture cost and/or maintenance cost through two-speed motor or full speed-variable motor, and the reliability that enhancing is provided.In addition, the operation of mechanical compression unit can cause quicker, the more effective conversion between the capacity load state.Embodiments of the invention through utilize the across-the-line starting brushless permanent magnet electromotor under normal conditions this mechanical compression unit of constant-speed drive improve total system effectiveness.
Improve to drive the performance of the motor of this mechanical compression unit-its one of maximum dissipative cell in compressor assembly-can improve total compressor assembly efficient often.What can believe is, thereby the air-conditioning system that comprises the digital compression thermomechanical components with across-the-line starting brushless permanent magnet electromotor among the present invention provides improved overall system performance to satisfy efficient standard (for example, seasonal energy efficiency grade).In addition, what can believe is to comprise among the present invention that the digital compressor of across-the-line starting brushless permanent magnet electromotor can reach new Chinese level 1 (Chinese Level1) efficient.
Some embodiments of the present invention even can remedy the quite most cost of material that causes by the permanent magnet in the rotor assembly that is included in the across-the-line starting brushless permanent magnet electromotor through the stator module that use has an aluminum winding.Make us finding unexpectedly that this structure that has the across-the-line starting brushless permanent magnet electromotor of aluminum (this material is not used in the winding of high-performance motor usually) winding is compared with the across-the-line starting brushless permanent magnet electromotor that has conventional copper winding and only demonstrated trickle performance difference.
According to an aspect of the present invention, a kind of digital compression thermomechanical components that is configured to provide the variable capacity adjusting is provided.This compressor assembly comprises a housing and a compressing mechanism that is positioned at this housing, and this compressing mechanism comprises first and second mechanical components.These mechanical components can relative to each other move between load condition and unloaded state.This compressor assembly further comprises a driving mechanism that is arranged in this housing, and this at least one mechanical component of driving mechanism transmission engagement is used for making mechanical component relative to each other to move.This driving mechanism comprises an across-the-line starting brushless permanent magnet electromotor.This motor comprise stator with can around rotational and with this stator rotor at interval.This rotor comprises rotor core body and a plurality of permanent magnet that is installed on this rotor core body.This permanent magnet on the whole along the rotor core axon to extension.
According to another aspect of the present invention; (this compressor assembly comprises the compressing mechanism that is arranged in the housing, has first and second mechanical components that can between load condition and unloaded state, relative to each other move in being configured to the digital compression thermomechanical components that provides variable capacity to regulate; Thereby be arranged at be used for driving mechanism that mechanical component relative to each other moves this mechanical component of transmission engagement in this housing), improve comprise with mechanical component movably be used for driving a mechanical component, single speed across-the-line starting brushless permanent magnet electromotor combines.This motor comprise stator with can around rotational and with this stator rotor at interval.This rotor comprises rotor core body and a plurality of permanent magnet that is installed on this rotor core body.This permanent magnet on the whole along the rotor core axon to extension.
Another aspect of the present invention relates to a kind of method that the compressor efficiency of increase is provided with low incremental cost in the digital compression thermomechanical components that is configured to provide variable capacity to regulate, wherein this compressor comprise generally speaking can be between load condition and unloaded state relative to each other axially movable first and second scroll elements.This method comprises the step of utilizing single speed across-the-line starting brushless permanent magnet electromotor to drive a scroll element; Make driven scroll element move with the orbital motion relation with respect to another scroll element generally speaking, therefore compression working fluid when scrollwork is in load condition.Therefore this method also is included between the continuous on-stream period of single speed motor scroll element is moved into unloaded state, regulates the capacity of compressor effectively and does not need complicated driver element to change motor speed.
This summary of the invention partly is the notion selection that is used for introducing a kind of reduced form, next will partly further describe this notion in embodiment and select.This summary of the invention part does not plan to confirm the key feature or the essential characteristic of theme required for protection, does not plan to be used for limiting the scope of theme required for protection yet.
According to ensuing embodiment and the accompanying drawing of following, each others of the present invention and advantage will be conspicuous.
Description of drawings
Next, describe the preferred embodiments of the present invention in detail with reference to appended accompanying drawing, wherein:
Fig. 1 is a principle isometric view that constitute, that be configured to provide the digital compression thermomechanical components that variable capacity regulates according to an embodiment of the invention, and it has compressing mechanism and comprises the driving mechanism that is arranged on brushless permanent magnet electromotor wherein, across-the-line starting;
Fig. 2 is the sectional view of this digital compression thermomechanical components of the approximate center position intercepting of the compressor assembly in Fig. 1; Describe to comprise the inside detailed construction of the compressing mechanism of first and second mechanical components, and comprised the rotor of across-the-line starting brushless permanent magnet electromotor and the driving mechanism of stator module;
Fig. 3 is the isometric view that is included in the across-the-line starting brushless permanent magnet electromotor assembly in the driving mechanism of the digital compression thermomechanical components shown in Fig. 1-2, illustrates rotor and stator module; With
Fig. 4 is the sectional view of the brushless permanent magnet electromotor assembly intercepting of approximate center position, across-the-line starting of electric motor assembly in Fig. 2, has described the inside detailed construction of rotor assembly, comprises a plurality of a plurality of permanent magnets that are located at wherein.
Accompanying drawing is not defined as the present invention at this open and describe specific embodiment.Accompanying drawing neither be inevitable proportional, but focus on the clearly principle of preferred illustrated embodiment.
Embodiment
The present invention can have many multi-form embodiments.Though accompanying drawing diagram and specification have been described some preferred embodiment of the present invention, be appreciated that for this open only be for example.Do not plan principle of the present invention is restricted to disclosed specific embodiment.
With reference to Fig. 1-2, the digital compression thermomechanical components 20 of principles of construction is described for various uses according to an embodiment of the invention earlier.This digital compression thermomechanical components 20 is configured to provide variable capacity to regulate.Though this digital compression thermomechanical components 20 can be used for various uses, illustrated embodiment has specific practicability when this digital compression thermomechanical components 20 is configured to as air-conditioning system a part of.
The same with routine to a certain extent; Particularly rapidly with reference to figure 2; This digital compression thermomechanical components 20 roughly comprises compressing mechanism 22 and as the driving mechanism 24 hereinafter that describe in detail, that comprise across-the-line starting brushless permanent magnet electromotor assembly 26 (seeing Fig. 3-4) that is configured to provide the variable capacity adjusting.
Some structural schemes that should be pointed out that said digital compression thermomechanical components 20 at first are normally conventional in related domain, therefore only describe relatively briefly at this.Yet, it is understandable that those of ordinary skill in the art can easily understand each CONSTRUCTED SPECIFICATION of this digital compression thermomechanical components 20 according to present disclosure.
At first note Fig. 1, what be readily appreciated that is, many elements of this digital compression thermomechanical components 20 are included in roughly in the inner chamber 28 that the casing housing 30 forms limits.In the embodiment who is described, housing 30 assists in substantially sealing, so this inner chamber 28 seals with external environment condition.Illustrated housing 30 generally speaking is columniform and has relative top and bottom axial edge 32,34.Housing 30 comprises the base 38 of housing element 36, adjacent bottom edge 34 settings usually and the top cover 40 that common adjacent top edge 32 is provided with.
Understand easily as those of ordinary skills, though inner chamber 28 seals with external environment condition, some elements (for example, power supply and working fluid to be compressed) must pass housing 30 via specific sealing channel.In this respect, this digital compression thermomechanical components 20 comprises that one is located at the compressor power jointer 42 on the housing element 36.As easy understanding, this compressor power jointer 42 is electrically connected with the suitable element of the brushless permanent magnet electromotor assembly 26 of the across-the-line starting that is described below.
In addition; This digital compression thermomechanical components 20 comprises the import 44 that is located on this housing element 36 and is located at the outlet 46 on the top cover 40; So that compressible working fluid (for example, the freezing mixture of liquid state or gaseous state) is imported, is exported the inner chamber 28 of this digital compression thermomechanical components 20.Certainly, be understood that easily that the concrete configuration of import 44 and outlet 46 can change under the situation that does not break away from the present invention's instruction.
Be careful Fig. 2 now, this digital compression thermomechanical components 20 comprises compressing mechanism 22 and driving mechanism 24, the electric motor assembly 26 that this driving mechanism comprises is as described below, be arranged in this housing 30.This digital compression thermomechanical components 20 further comprises upper bearing assembly 48 and lower bearing assembly 50, is used for rotatably supporting the axle 52 of this driving mechanism 24 and the element of this compressing mechanism 22.
This compressing mechanism 22 comprises first and second mechanical components, thereby is illustrated as the form of the scroll element 54,56 of the compression working fluid that cooperatively interacts.In the embodiment shown, first scroll element 54 is fixing rotationally with respect to second scroll element 56.In related domain, first scroll element 54 also can be fixed with respect to second scroll element 56 in inner chamber 28 in a well-known manner with moving axially.Second scroll element 56 be operably connected with this driving mechanism 24 in case through crank pin 58 with drive lining 60 and be in transmission connection on the axle 52 of electric motor assembly 26, make second scroll element 56 can be described below move along track with respect to first scroll element 54.
Non-Orbiting scroll element 54 is located with the mode that is engaged with each other with Orbiting scroll element 56; Suitable conventional coupled modes allow the eccentric orbit motion (along a circular path) between them generally speaking, but forbid the relative rotary motion between them.The top 32 of contiguous generally speaking this housing 30 of dividing plate 62 is provided with and is used for inner chamber 28 is separated into discharge side 64 that is positioned at the upper end and the suction chamber 66 that is positioned at the lower end, and erect image those of ordinary skills are according to that kind that present disclosure can easily understand that.
As the easy understanding of those of ordinary skills; When the first non-Orbiting scroll element 54 and the second Orbiting scroll element 56 relative to each other moved axially the primary importance corresponding to load condition, this compressing mechanism 22 was configured to during the electric motor assembly 26 of driving mechanism 24 rotates compression working fluid and with complete (100%) capacity operation.Perhaps; When the first non-Orbiting scroll element 54 and the second Orbiting scroll element 56 relative to each other move axially the second place corresponding to unloaded state; This compressing mechanism 22 is configured to not compression working fluid and with zero (0%) capacity operation, even also like this during the electric motor assembly 26 of driving mechanism 24 continues to rotate.By this way, the capacity of this numeral scroll compressor assembly 20 can change quickly and efficiently and not necessarily change the rotating speed of the electric motor assembly 26 of this driving mechanism 24.
Layout to axial between the first non-Orbiting scroll element 54 and the second Orbiting scroll element 56 can be passed through control gear (not shown, for example solenoid valve) and operated and move, and this is well known in the art.Therefore; Through in arbitrary given cycle, suitably changing load condition time and unloaded state time; This numeral scroll compressor assembly 20 can be the required arbitrary capacity of given systems communicate, and erect image those of ordinary skills are according to that kind that present disclosure can easily understand that.
At complete (100%) capacity run duration; When the second Orbiting scroll element 56 during with respect to first non-Orbiting scroll element 54 orbiting, working fluid to be compressed is inhaled into through import 44 in the suction chamber 66 of inner chamber 28 of this digital compression thermomechanical components 20.Leave suction chamber 66, working fluid gets into the compression chamber 68 that is reduced by the common volume that limits of the part of scroll element 54,56.The intermeshing wrap of scroll element 54,56 (intermeshing scroll wrap) defines the mobile depression (moving pockets) of working fluid in compression chamber 68 inside; Because the orbiting of the second Orbiting scroll element 56; These sizes that move depression reduce when its inside radial motion gradually, and therefore compression is through the working fluid of import 44 entering.Working fluid through overcompression is discharged into discharge side 64 and discharges this digital compression thermomechanical components 20 through outlet 46 then.
At zero (0%) capacity run duration; Even the second Orbiting scroll element 56 is with respect to first non-Orbiting scroll element 54 orbiting; Scroll element 54; 56 also the earth's axis is to moving to unloaded state away from each other, and the suction that therefore forms through compression chamber 68 not have working fluid a large amount of mobile through this digital compression thermomechanical components 20 yet.Because this digital compression thermomechanical components 20 can be moved by zero (0%) capacity when the second Orbiting scroll element 56 moves with respect to the first non-Orbiting scroll element 54; This compressing mechanism 22 can be driven by driving mechanism 24 effectively and expeditiously; This driving mechanism comprises the across-the-line starting brushless permanent magnet electromotor assembly 26 that is configured to single speed motor, like detailed description hereinafter.
Like what hereinafter describe in detail, an embodiment who is included in the across-the-line starting brushless permanent magnet electromotor assembly 26 in the new digital compressor assembly 20 demonstrates approximate 95% motor efficiency in addition.Because the electric motor assembly of driving mechanism compressor assembly often (and even is the whole system that comprises this compressor assembly; Air-conditioning system for example) one of element of power consumption in, the efficiency improvement that obtains through the across-the-line starting brushless permanent magnet electromotor assembly of introducing among the present invention 26 shows significant performance and strengthens in this digital compression thermomechanical components 20.In one embodiment, the new digital compressor assembly 20 that comprises across-the-line starting brushless permanent magnet electromotor assembly 26 that is described below demonstrates the higher seasonal energy efficiency grade that obtains than existing compressor assembly.
As those of ordinary skills according to present disclosure easily understand; The many above-mentioned universal component of this digital compression thermomechanical components 20 all is basic conventional in essence, and the various forms of these elements all can adopt replacement form and/or obviously different with illustrated embodiment under the situation that does not break away from the present invention's instruction in other respects.Any modification for the general conventional element of this digital compression thermomechanical components 20 can not influence special the scope of the invention defined by the claims.
Continuation simultaneously referring to Fig. 1-2, will describe in further detail across-the-line starting brushless permanent magnet electromotor assembly 26 with reference to figure 2.With conventional the same, electric motor assembly 26 roughly comprises can be around the rotor assembly 70 and stator module 74 of axis 72 rotations on some degree.Rotor assembly 70 comprises the axle 52 of axial setting, and this is configured to outwards axially stretch out with rotor assembly 70 rotations and from the two ends of stator module 74.Though only described an exemplary embodiment here, the suitable rotor and the alternate means of stator module also are conceivable certainly and obviously fall in the scope of the present invention.
Now temporarily turn to the CONSTRUCTED SPECIFICATION of stator module 74, those of ordinary skills are readily appreciated that the stator module 74 shown in Fig. 3-4 roughly comprises stator core body 76 and axial on the whole concentric winding 78.Illustrated stator core body 76 is made up of a plurality of stator laminate patch 80 (see figure 4)s of axially piling up, and this is well known in the art.Very clear, winding 78 shown in Figure 3 is conventional schematic forms, but other details of relevant this winding 78 will be described below.Easily understand as those of ordinary skills, the specified structure of winding 78 directly influences power, torque, voltage, running speed, number of poles of electric motor assembly 26 or the like.
In related domain some conventional; Each independent stator laminate patch 80 comprises the steel main body that is essentially annular; Therefore form the common overall center axial bore 82 that forms of a plurality of stator laminate patches of axially piling up 80 of stator core body 76, be used for holding rotor assembly 70.Understand easily as those of ordinary skills, air gap 84 radially extends between the stator core body 76 of stator module 74 and rotor assembly 70, makes rotor assembly 70 to rotate at stator module 74 internal freedoms.
Form a plurality of grooves that are roughly arc 86 that axially pass wherein of the also common formation of a plurality of stator laminate patches of axially piling up 80 of stator core body 76, each described groove 86 is communicated with air gap 84.Understand easily as those of ordinary skills, the wire of conduction forms winding 78, and this winding also is contained in wherein through groove 86.Notice that in the illustrated embodiment, the stator core body 76 of stator module 74 comprises 24 grooves 86, but under the situation that does not break away from the present invention's instruction, the groove of varying number is set optionally.
Shown embodiment's electric motor assembly 26 is configured to three phase motor.Temporarily turn to now the consideration to the operation of three phase motor and use therein winding details, those of ordinary skills understand easily three phase motor compacter often and with the single phase motor of same electric pressure and loading factor to compare cost littler.Therefore in addition, many three phase motors often demonstrate littler vibration than accordingly, the same power single phase motor of use is more durable under the same conditions.Yet principle of the present invention is not restricted to three phase motor, can also be applied to the single phase motor (not shown) equally.In more detail, the electric motor assembly 26 of illustrated embodiment is configured to single speed motor.
In a way with related domain in convention the same, winding 78 comprises and is used for three power supplys phase winding of each mutually that this is that those of ordinary skills understand easily.For for simplicity, the winding construction that briefly is pointed out that three phase motor is well known in the art, needn't describe in detail at this.With reference to figure 3, in illustrated embodiment of the present invention, stator module 74 comprises power connector 88, and this power connector comprises three leads that are connected to the power supply (not shown), and in each lead one corresponding to three power supplys each in mutually.As easy understanding, temporarily with reference to figure 2, stator power connector 88 is electrically connected with aforesaid compressor power connector 42.
What can estimate is that the winding 78 of across-the-line starting brushless permanent magnet electromotor assembly 26 can comprise copper (also being habitual generally speaking), perhaps can comprise aluminium (as what showed), like what next further describe.Can also comprise other materials (for example, aluminum alloy or the molten aluminium that applies copper) though notice the winding 78 that comprises aluminium, the winding 78 of illustrated embodiment comes down to be made up of aluminum steel.Next other details of this atypia winding material in the brushless permanent magnet electromotor assembly 26 of across-the-line starting and unpredictalbe advantage will describe in further detail.
Next turn to the detailed structure of rotor assembly 70, and specifically with reference to figure 4, rotor assembly 70 roughly comprises rotor core body 90, this rotor core body comprises the rotor laminate patch 92 of axially piling up of a plurality of and a plurality of aluminium bars 94 integrally formed (for example through die casting).The a plurality of rotor laminate patches 92 in rod 94 edges extend axially and comprise along the aluminium ring (not shown) of the corresponding axial edge setting of device.Easily understand as those of ordinary skills, the specified structure of this rod 94 directly influences the start-up function of electric motor assembly 26.Very clear, the routine configuration in the ordinary course of things of this rod, the rod that includes but not limited to around the helically twisted rod of rotor core body 90 or not have to twist at all can be estimated and obviously falls into scope of the present invention.
Continuation is with reference to figure 4; Each independent rotor laminate patch 92 comprises the steel main body that is essentially annular, and the feasible a plurality of rotor laminate patches of axially piling up 92 that form this rotor core body 90 form radial outer periphery parts 96 jointly and axially pass to hold the axis hole of axially aligning 98 of axle 52.In addition, form that a plurality of rotor laminate patches of axially piling up 92 of this rotor core body 90 are further common to be formed a plurality of axially pass overall and be the groove 100 of arc, these radial outer periphery part 96 settings of each groove 100 contiguous at least (if not being communicated with).As well known in the art, aluminium bar 94 forms and passes groove 100, thereby the radial outer periphery part 96 of contiguous at least this rotor core body 90 is provided with, thereby limits its at least a portion (if not having the common rotor subject that exposes rod that forms) jointly.Note that in illustrated embodiment each rotor laminate patch 92 comprises 34 grooves 100, but under the situation that does not break away from the present invention's instruction, the groove of varying number can be set similarly.
In more detail, still pay close attention to Fig. 4, each in a plurality of permanent magnets 102 all is parallel to axle 72 substantially and is provided with.In addition, all radial outer periphery part 96 settings of contiguous this rotor core body 90 basically of each in a plurality of permanent magnets 102.Though easily understand as those of ordinary skills, the permanent magnet 102 that is installed on the rotor core body 90 possibly have varying number and structure (not shown), has been described in the drawings a particularly advantageous structure.
In schematic structure, rotor assembly 70 comprises four permanent magnets 102, and each permanent magnet 102 all has the size that equates in fact.As finding in the sectional view of Fig. 4, four permanent magnets 102 become two pairs of settings on the cross section of rotor core body 90, each to permanent magnet 102 on the whole with respect to axis 72 with another to permanent magnet 102 symmetries.In the illustrated embodiment, each permanent magnet 102 of the brushless permanent magnet electromotor assembly 26 of across-the-line starting all comprises neodymium.
Now temporary transient steer motor efficient, those of ordinary skills are understood that easily, become end user's important financial burden in the length of life of the motor energy cost relevant with electric motor operated.Therefore, Zong the improvement of motor efficiency also can produce remarkable energy saving cost in the motor length of life even this improvement only is relatively little percentage.Therefore, causing the inventive improvements of efficiency gains to have obvious competitive advantages aspect motor designs or the structure, is not only to motor itself, also to comprising that the equipment (for example the digital compression thermomechanical components 20) that improves motor is not always the case.
With respect to above-mentioned efficient background; Should be noted that in certain embodiments of the present invention; Compare with existing across-the-line starting brushless permanent magnet electromotor, the unconventional combination with stator module 74 (comprise aluminium form winding 78) of the rotor assembly 70 in the across-the-line starting brushless permanent magnet electromotor assembly 26 (comprising a plurality of permanent magnets 102) makes motor performance obtain significantly to improve aspect the incremental cost reducing greatly.It is that those of ordinary skills are unexpected that this performance improves.
More particularly, compare with winding made of copper, the winding of being processed by aluminium (this is than the more cheap material of copper that constitutes winding) more meets total motor and puts the relatively significantly loss of rate aspect from historical point view.For example, from before test can find out that in the existing embodiment of induction motor, the copper winding causes about 2% relatively significantly loss (efficient drops to about 89% from about 91%) of total motor efficiency aspect to the variation of aluminum winding.
Understand easily as those of ordinary skills, the conformity between efficient and expensive makes the conventional across-the-line starting brushless permanent magnet electromotor become the high-quality motor that a kind of hope is designed with peak performance.Well-known is that with respect to other typical induction motoies, permanent magnet has significantly increased cost of material.Therefore, the consistent instruction of conventional design of existing across-the-line starting brushless permanent magnet electromotor, the expensive high-grade permanent magnet of rotor is corresponding supporting with the expensive high grade copper winding of stator.
Yet under some embodiment's situation of the present invention; Unexpectedly determine, the across-the-line starting brushless permanent magnet electromotor assembly 26 that has aluminum (being not used in the material of a high-performance motor winding usually) winding 78 is compared with the existing across-the-line starting brushless permanent magnet electromotor that has the copper winding and is only shown trickle performance difference.For example; Observe; With show in the test of above-mentioned induction motor, consistent relatively decrease in efficiency compares; Counterintuitive total motor efficiency aspect that is combined in produces relatively little loss among the present invention, only is equivalent to observed about 1/2nd loss in the aforesaid induction motor test.More particularly, the across-the-line starting brushless permanent magnet electromotor assembly 26 that has an aluminum winding 78 is put at total motor has only about 1% loss (efficient drops to about 94% from about 95%) aspect the rate.
In addition, can remedy the cost of material of quite most permanent magnet 102 as the aluminium material of some embodiment's of across-the-line starting brushless permanent magnet electromotor assembly 26 winding 78.In one embodiment; As mentioned above; The across-the-line starting brushless permanent magnet electromotor assembly 26 that has aluminum winding 78 is to use than to have the lower incremental cost of copper winding embodiment to make, and this cheaply electric motor assembly 26 have about 94% motor efficiency.
Yet what stress once more is not to be that all across-the-line starting brushless permanent magnet electromotor assemblies 26 all comprise aluminum winding 78.But some embodiment who particularly points out across-the-line starting brushless permanent magnet electromotor 26 comprises copper winding 78 (not shown).Comprise that this embodiment copper winding, across-the-line starting brushless permanent magnet electromotor assembly 26 can bring about 95% efficient, this can bring digital compression thermomechanical components 20 even higher overall system performance.
Aforesaid, of the present invention preferred form can not separated crowd's scope of the present invention with restrictive, sense only as example.Those skilled in the art are easy to exemplary embodiment is obviously improved under the situation that does not break away from the present invention's essence, and are just as noted before.
Therefore inventor's statement, the scope that appropriateness of the present invention is fair that relies on similar theory confirm and be expressed as next described in claims, belong to and break away from essence but exceed arbitrary equipment of character express scope of the present invention.
Claims (20)
1. digital compression thermomechanical components that is configured to provide variable capacity to regulate, said compressor assembly comprises:
Housing;
Compressing mechanism is located in this housing and comprises first and second mechanical components,
Said mechanical component can relative to each other move between load condition and unloaded state; With
Driving mechanism is arranged in this housing and at least one said mechanical component of transmission engagement, is used for making each mechanical component relative to each other to move, and said driving mechanism comprises the across-the-line starting brushless permanent magnet electromotor,
Said motor comprise stator with can around rotational and with the isolated rotor of said stator,
Said rotor comprises the rotor core body and is installed in a plurality of permanent magnets on the said rotor core body,
Said permanent magnet on the whole along the rotor core axon to extension.
2. digital compression thermomechanical components according to claim 1,
Said mechanical component comprises scroll element.
3. digital compression thermomechanical components according to claim 2,
Said driving mechanism comprises further and is configured to the live axle that rotates with this rotor that said live axle and a said scroll element operationally are coupled and are used for making this scroll element to move with the mode of orbital motion on the whole with respect to another scroll element.
4. digital compression thermomechanical components according to claim 3,
Each said scroll element can relative to each other move axially between loading and unloading state and unloaded state on the whole.
5. digital compression thermomechanical components according to claim 4,
Said housing comprises and limits the sealing shell of enclosed space basically.
6. digital compression thermomechanical components according to claim 1, said permanent magnet are contained in this rotor core body,
Said rotor core body comprises a plurality of rotor laminate patches of axially piling up,
At least one said rotor laminate patch is set to contact so that permanent magnet is fixed on the appropriate location with said a plurality of permanent magnets.
7. digital compression thermomechanical components according to claim 6,
Said permanent magnet is parallel to said axis setting on the whole,
The said permanent magnet radial outer periphery of contiguous this rotor core body basically partly is provided with.
8. digital compression thermomechanical components according to claim 7,
Thereby what said rotor assembly comprised further that the radial outer periphery of this rotor core body of a plurality of vicinities partly is provided with limits its at least a portion jointly at the isolated axial rod of circumferencial direction.
9. digital compression thermomechanical components according to claim 8,
Said rotor assembly comprises the permanent magnet of four substantially the same sizes, and said permanent magnet divides two pairs of settings, and each is symmetrical to magnet with respect to axis and another to magnet.
10. digital compression thermomechanical components according to claim 9,
Said mechanical component comprises relative to each other axially movable each scroll element between loading and unloading state and unloaded state on the whole, and said electric motor assembly is defined as the single speed three phase motor.
11. digital compression thermomechanical components according to claim 1, said electric motor assembly is defined as single speed motor.
12. digital compression thermomechanical components according to claim 11, said electric motor assembly is defined as three phase motor.
13. digital compression thermomechanical components according to claim 1,
Said stator comprises the stator core body, have a plurality of at the isolated axial groove of circumferencial direction and be defined for and hold this centre of rotor bore hole,
Said stator further comprises the conductive winding coil that is contained in a plurality of axial grooves distributions that stride across this stator core body on the whole wherein,
Said winding coil comprises aluminium.
14. digital compression thermomechanical components according to claim 1, said permanent magnet comprises neodymium.
15. be configured to provide in the digital compression thermomechanical components of variable capacity adjusting; This compressor assembly comprises the compressing mechanism that has first and second mechanical organs that can between load condition and unloaded state, relative to each other move that is located in the housing; Be located at be used in the housing a said mechanical organ of transmission engagement so that this mechanical organ with respect to the driving mechanism of another motion; Wherein improve and comprise mechanical organ is movably combined with the single speed across-the-line starting brushless permanent magnet electromotor that is used for driving a said mechanical organ
Said motor comprise stator with can around rotational and with the isolated rotor of said stator,
Said rotor comprises the rotor core body and is installed in a plurality of permanent magnets on the said rotor core body,
Said permanent magnet on the whole along the rotor core axon to extension.
16. be configured to provide in the digital compression thermomechanical components of variable capacity adjusting as claimed in claim 15,
Said mechanical component comprises scroll element,
Said driving mechanism comprises further and is configured to the live axle that rotates with this rotor that said live axle and a said scroll element operationally are coupled and are used for making a scroll element to move with the mode of orbital motion on the whole with respect to another scroll element.
17. be configured to provide in the digital compression thermomechanical components of variable capacity adjusting as claimed in claim 16,
Said permanent magnet is contained in this rotor core body,
Said rotor core body comprises a plurality of rotor laminate patches of axially piling up,
At least one said rotor laminate patch is set to contact so that this permanent magnet is fixed on the appropriate location with said a plurality of permanent magnets.
18. method that the compressor efficiency of increase is provided with low incremental cost in the digital compression thermomechanical components that is configured to provide variable capacity to regulate; Wherein this compressor comprise can be between load condition and unloaded state relative to each other axially movable on the whole first and second scroll elements, said method comprises the steps:
(a) utilize single speed across-the-line starting brushless permanent magnet electromotor to drive a said scroll element, make driven scroll element on the whole with respect to another scroll element with the motion of orbital motion relation, thereby when scrollwork is in load condition compression working fluid; With
(b) between the continuous on-stream period of this single speed motor, said scroll element is moved into unloaded state, thereby regulate the capacity of compressor effectively and do not need complicated driver element to change motor speed.
19. like the method for the compressor efficiency that increase is provided of claim 18,
Said motor comprise stator with can around rotational and with the isolated rotor of said stator,
Said rotor comprises the rotor core body and is installed in a plurality of permanent magnets on the said rotor core body,
Said permanent magnet on the whole along the rotor core axon to extension.
20. like the method for the compressor efficiency that increase is provided of claim 19, said scroll element and said single speed motor are arranged in the sealing shell that limits enclosed space basically.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010537890.1A CN102444580B (en) | 2010-09-30 | 2010-09-30 | With the digital compressor of across-the-line starting brushless permanent magnet electromotor |
| PCT/CN2011/080488 WO2012041259A1 (en) | 2010-09-30 | 2011-09-30 | Variable capacity compressor with line-start btushles permanent magnet motor |
| US13/876,203 US20140147294A1 (en) | 2010-09-30 | 2011-09-30 | Variable capacity compressor with line-start brushless permanent magnet motor |
| EP11828155.9A EP2622224A4 (en) | 2010-09-30 | 2011-09-30 | Variable capacity compressor with line-start brushless permanent magnet motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010537890.1A CN102444580B (en) | 2010-09-30 | 2010-09-30 | With the digital compressor of across-the-line starting brushless permanent magnet electromotor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102444580A true CN102444580A (en) | 2012-05-09 |
| CN102444580B CN102444580B (en) | 2016-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010537890.1A Active CN102444580B (en) | 2010-09-30 | 2010-09-30 | With the digital compressor of across-the-line starting brushless permanent magnet electromotor |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20140147294A1 (en) |
| EP (1) | EP2622224A4 (en) |
| CN (1) | CN102444580B (en) |
| WO (1) | WO2012041259A1 (en) |
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| CN103821718A (en) * | 2012-11-19 | 2014-05-28 | 丹佛斯商用压缩机有限公司 | Variable speed scroll compressor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103821718A (en) * | 2012-11-19 | 2014-05-28 | 丹佛斯商用压缩机有限公司 | Variable speed scroll compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102444580B (en) | 2016-03-23 |
| EP2622224A4 (en) | 2018-01-10 |
| WO2012041259A1 (en) | 2012-04-05 |
| WO2012041259A8 (en) | 2012-06-21 |
| EP2622224A1 (en) | 2013-08-07 |
| US20140147294A1 (en) | 2014-05-29 |
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