CN108288938B - Compressor and refrigeration equipment - Google Patents
Compressor and refrigeration equipment Download PDFInfo
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- CN108288938B CN108288938B CN201810308108.5A CN201810308108A CN108288938B CN 108288938 B CN108288938 B CN 108288938B CN 201810308108 A CN201810308108 A CN 201810308108A CN 108288938 B CN108288938 B CN 108288938B
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- magneto
- compressor
- frequency converter
- winding
- connection
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/16—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring
- H02P25/18—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring with arrangements for switching the windings, e.g. with mechanical switches or relays
- H02P25/184—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring with arrangements for switching the windings, e.g. with mechanical switches or relays wherein the motor speed is changed by switching from a delta to a star, e.g. wye, connection of its windings, or vice versa
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- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/278—Surface mounted magnets; Inset magnets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
- H02K11/21—Devices for sensing speed or position, or actuated thereby
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/28—Layout of windings or of connections between windings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
Abstract
The present invention provides a kind of compressor and refrigeration equipments.Wherein, compressor is used for refrigeration equipment, and refrigeration equipment includes connection component and the frequency converter that is connected with one end of connection component, and compressor includes: first shell；Magneto is arranged in first shell, connects the other end of connection component；The critical speed of magneto is n0；The number of poles of magneto is P；When the winding of magneto is in star-like connection: the busbar voltage of frequency converter is Udc；The unloaded back emf coefficient of magneto is E0；When the preset rotation speed of magneto is n1, the d-axis inductance of magneto is Ld, and the output electric current of frequency converter is I1；The relationship of E0, P, I1, Ld, n1 and Udc meet: (E0-P × I1 × Ld) × n1 >=0.6Udc；Wherein, n1 < n0, and n0-n1≤1r/s；When the winding of magneto is in star-like connection, the revolving speed of magneto is less than n0.
Description
Technical field
The present invention relates to compressor manufacturing technical fields, in particular to a kind of compressor and refrigeration equipment.
Background technique
Compressor is important and core the component of refrigeration equipment, and the relevant technologies propose winding handover scheme, it may be assumed that compression
For the motor of machine in low-speed running, the stator winding of compressor is in star-like connection, and the motor of compressor is when running at high speed, compression
The connection triangular in shape of the stator winding of machine.However, it is not directed to the relevant parameter design scheme of compressor electric motor in the related technology,
If motor scheme design is improper, it will cause that motor overall efficiency is low, and expansion speed range is small, poor user experience.
Summary of the invention
The present invention is directed to solve at least one of the technical problems existing in the prior art or related technologies.
For this purpose, the first aspect of the present invention proposes a kind of compressor.
The second aspect of the present invention proposes a kind of refrigeration equipment.
In view of this, the first aspect of the present invention proposes a kind of compressor, it is used for refrigeration equipment, refrigeration equipment to include connecting
Connected components and the frequency converter being connected with one end of connection component, compressor include: first shell；Magneto, setting is the
In one shell, the other end of connection component is connected；The critical speed of magneto is n0；The number of poles of magneto is P；In permanent magnetism
When the winding of motor is in star-like connection: the busbar voltage of frequency converter is Udc；The unloaded back emf coefficient of magneto is E0；When
When the preset rotation speed of magneto is n1, the d-axis inductance of magneto is Ld, and the output electric current of frequency converter is I1；E0,P,I1,
The relationship of Ld, n1 and Udc meet: (E0-P × I1 × Ld) × n1 >=0.6Udc；Wherein, n1 < n0, and n0-n1≤1r/s；Forever
When the winding of magneto is in star-like connection, the revolving speed of magneto is less than n0.
A kind of critical speed of the magneto of compressor provided by the invention is n0, when the winding of magneto is in star
When connection, the revolving speed of magneto is less than n0, and when the winding of magneto is in Angle connection, the revolving speed of magneto is greater than
n0.Under the premise of the winding of magneto is in Angle connection, by the way that the relationship of E0, P, I1, Ld, n1 and Udc is rationally arranged, make
Satisfaction (E0-P × I1 × Ld) × n1 >=0.6Udc so that magneto equally has height when slowly running with high-speed rotation
The performance of efficiency, to realize product in the purpose of full frequency band performance with higher；Further, default by being rationally arranged
Revolving speed n1, so that revolving speed n1 < n0, and n0-n1≤1r/s, when close to the revolving speed n1 of critical speed n0, winding is in star-like connection
Magneto under mode has certain weak magnetic angle, and the performance of magneto rises with revolving speed and declined, and works as magneto
Revolving speed be greater than critical speed n0, and when the revolving speed of very close critical speed n0, winding is in the permanent magnetism under Angle connection mode
The performance of motor weak magnetic, magneto rises with the rising of revolving speed, to guarantee near critical speed n0, when star-like connection has
There is certain weak magnetic depth, and the range that the revolving speed in Angle connection with certain magneto rises without weak magnetic, make
Magneto winding connection type switch over if, switch it is more smooth, can greatly reduce impact, transition is more flat
Surely, the operational energy efficiency for improving product improves the service performance and the market competitiveness of product.
Above-mentioned compressor according to the present invention can also have following additional technical feature:
In the above-mentioned technical solutions, it is preferable that the value range of n0 are as follows: n0 >=40r/s.
In the technical scheme, it by the way that the value range of critical speed n0 is rationally arranged, is allowed to as n0 >=40r/s, when forever
When the revolving speed of magneto is located within critical speed n0, the efficiency of the magneto of star-like connection winding is in drop mode, and
The efficiency of the magneto of Angle connection winding is in ascending fashion, thus guarantee product in full frequency band performance with higher,
Meanwhile if the connection type of the winding of magneto switches in above-mentioned zone, switching is more smooth, can greatly subtract
Small impact, transition is more stable, improves the operational energy efficiency of product, improves the service performance and the market competitiveness of product.
In any of the above-described technical solution, it is preferable that magneto is three-phase motor with permanent magnets.
In the technical scheme, magneto is not limited to three-phase motor with permanent magnets, also can be other multi-phase permanent motors.
In any of the above-described technical solution, it is preferable that magneto includes: stator, is provided with stator core and is wrapped in
Winding on stator core；Rotor is arranged in the installation cavity of stator, and rotor is provided with rotor core and is located on rotor core
Permanent magnet.
In this embodiment, stator includes stator core and winding, and by the way that winding to be wrapped on stator core, stator exists
Compressor run when be it is stationary, when electric current is after winding, stator can generate magnetic field；Rotor includes rotor core and forever
The magnetic pole of magnet, permanent magnet will not change, by being arranged permanent magnet on rotor core, so that turning in compressor operating
Son is arranged in the installation cavity of stator, and stator generates rotating excitation field, and rotor by magnetic force line cutting and then generates in rotating excitation field
Electric current is exported, provides power for the operating of compressor.
In any of the above-described technical solution, it is preferable that the winding of stator is threephase stator winding, the winding packet of every phase stator
It includes head and connects head and tail connector, all head connectors are connected with a connecting terminal of compressor, whole tail connectors and compressor
Another connecting terminal is connected.
In this embodiment, the winding of every phase stator includes that head connects head and tail connector, by all first of threephase stator winding
Connector is connected with a connecting terminal of compressor, whole tail connectors of threephase stator winding and another wiring of compressor
Terminal is connected, and connection component is connected with two connecting terminals of compressor respectively, in this way, passing through connection component
Difference movement, can be realized the different connection types of winding, e.g., star-like connection and Angle connection.
In any of the above-described technical solution, it is preferable that permanent magnet is rare-earth permanent magnet；Or permanent magnet is iron oxygen permanent magnet.
In any of the above-described technical solution, it is preferable that rotor core includes slot, and the quantity of slot is at least one, entirely
Portion's slot is along the circumferentially-spaced distribution of rotor core, and permanent magnet setting is in slot.
In the technical scheme, a kind of permanent magnet plan of establishment of rotor is specifically defined.By adding on rotor core
Work slot can provide installation site for permanent magnet, convenient for the positioning and assembly of permanent magnet.Meanwhile the structure setting processes work
Sequence is few, and processing technology is simple, and production cost is low, is convenient for volume production.
In any of the above-described technical solution, it is preferable that permanent magnet is cylindrical in shape, and permanent magnet is set in the outer wall of rotor core
On.
In the technical scheme, a kind of permanent magnet plan of establishment of rotor is specifically defined.It is set in and is turned by permanent magnet
On the outer wall of sub- iron core, rotor core plays the role of support, convenient for the positioning and assembly of permanent magnet.Meanwhile the structure setting
Manufacturing procedure is few, and processing technology is simple, and production cost is low, is convenient for volume production.
The second aspect of the present invention proposes a kind of refrigeration equipment, comprising: second shell；Frequency converter is arranged in second shell
In vivo；Compressor as described in technical solution any in first aspect, compressor are arranged in second shell；Connection component, if
It sets in second shell, is separately connected frequency converter and compressor；Controller is arranged in second shell, and connection connection component becomes
Frequency device and compressor, for controlling frequency converter and compressor, so that the relationship of E0, P, I1, Ld, n1 and Udc meet: (E0-P ×
I1×Ld)×n1≥0.6Udc。
Refrigeration equipment provided by the invention includes: second shell, frequency converter, compressor, connection component and controller.Pass through
Controller is set, so that the winding in magneto is in star-like connection, controller controls frequency converter and compressor, so that E0, P,
The relationship of I1, Ld, n1 and Udc meet: (E0-P × I1 × Ld) × n1 >=0.6Udc, and then guarantee the revolving speed of magneto in pole
When close to critical speed, winding has certain weak magnetic depth in the magneto of star connection, winding in angular connection forever
Magneto does not enter in the weak magnetic region, to guarantee that product in full frequency band performance with higher, and ensure that magneto
Winding connection type switching without clamping stagnation, switching it is more smooth, ensure that the stationarity of transition.
In the above-mentioned technical solutions, it is preferable that when the input current of frequency converter is alternating current, frequency converter includes: rectification
Device；Inverter connects rectifier.
In the technical scheme, according to the composition for determining frequency converter the characteristics of the input current of frequency converter, work as frequency converter
Input current when being alternating current, frequency converter includes rectifier and inverter, and the input current of frequency converter passes through rectifier and filters
Afterwards, so that alternating current is converted into direct current, and direct current is supplied into inverter.
In any of the above-described technical solution, it is preferable that when the input current of frequency converter is direct current, frequency converter includes inverse
Become device.
In the technical scheme, according to the composition for determining frequency converter the characteristics of the input current of frequency converter, work as frequency converter
Input current when being direct current, frequency converter includes inverter, and direct current energy is changed into alternating current using inverter.
In any of the above-described technical solution, it is preferable that connection component includes: switching switch, for realizing magneto
Winding is in star-like connection and in the switching of Angle connection.
In the technical scheme, it by setting switching switch, is switched on or is closed using switching to realize Permanent Magnet and Electric
The winding of machine and the connection status of frequency converter, and then the winding of realization magneto is in the winding of star-like connection and magneto
Angle connection.Meanwhile the structure setting is easy to process, installation and subsequent disassembly, replacement, interchangeability are strong.
In any of the above-described technical solution, it is preferable that refrigeration equipment further include: detection device is arranged in second shell,
Connect controller and compressor.
In the technical scheme, by the way that detection device is arranged in second shell, detection device real-time detection permanent magnetism is utilized
The revolving speed of motor judges whether the revolving speed of magneto reaches preset rotation speed n1 for controller, provides real time data, convenient for control
Device processed is accurate and timely control other component acts, to ensure that the reliability and accuracy that product uses.
Additional aspect and advantage of the invention will become obviously in following description section, or practice through the invention
Recognize.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, in which:
Fig. 1 is the structural schematic diagram that the frequency converter, magneto and switching of one embodiment of the invention switch；
Fig. 2 is the structural schematic diagram of the external cabling of the magneto of first embodiment of the invention；
Fig. 3 is the structural schematic diagram of the winding of the magneto of first embodiment of the invention；
Fig. 4 is the structural schematic diagram of the external cabling of the magneto of second embodiment of the invention；
Fig. 5 is the structural schematic diagram of the winding of the magneto of second embodiment of the invention；
Fig. 6 is the cross-sectional view of the magneto of one embodiment of the invention；
Fig. 7 is the cross-sectional view of the compressor of one embodiment of the invention.
Wherein, corresponding relationship of the Fig. 1 into Fig. 7 between appended drawing reference and component names are as follows:
1 compressor, 10 frequency converters, 102 rectifiers, 104 inverters, 20 magnetoes, 202 stators, 204 stator cores,
206 windings, 208 rotors, 210 rotor cores, 212 permanent magnets, 214 first connectors, 216 tail connectors, 30 second shells, 40 switchings are opened
It closes.
Specific embodiment
To better understand the objects, features and advantages of the present invention, with reference to the accompanying drawing and specific real
Applying mode, the present invention is further described in detail.It should be noted that in the absence of conflict, the implementation of the application
Feature in example and embodiment can be combined with each other.
In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention, still, the present invention may be used also
To be implemented using other than the one described here other modes, therefore, protection scope of the present invention is not by described below
Specific embodiment limitation.
The compressor 1 described according to some embodiments of the invention and refrigeration equipment are described referring to Fig. 1 to Fig. 7.
As shown in Figure 1 to Figure 3, the embodiment of first aspect present invention proposes a kind of compressor 1, is used for refrigeration equipment,
Refrigeration equipment includes connection component and the frequency converter being connected with one end of connection component 10, and compressor 1 includes: first shell；
Magneto 20 is arranged in first shell, connects the other end of connection component；The critical speed of magneto 20 is n0；Forever
The number of poles of magneto 20 is P；When the winding 206 of magneto 20 is in star-like connection: the busbar voltage of frequency converter 10 is Udc；
The unloaded back emf coefficient of magneto 20 is E0；When the preset rotation speed of magneto 20 is n1, the d-axis of magneto 20
Inductance is Ld, and the output electric current of frequency converter 10 is I1；The relationship of E0, P, I1, Ld, n1 and Udc meet: (E0-P × I1 × Ld) ×
n1≥0.6Udc；Wherein, n1 < n0, and n0-n1≤1r/s；When the winding 206 of magneto 20 is in star-like connection, magneto
20 revolving speed is less than n0.
A kind of critical speed of the magneto 20 of compressor 1 provided by the invention is n0, when the winding of magneto 20
206 when being in star-like connection, and the revolving speed of magneto 20 is less than n0, when the winding 206 of magneto 20 is in Angle connection, permanent magnetism
The revolving speed of motor 20 is greater than n0.The winding 206 of magneto 20 be in Angle connection under the premise of, by be rationally arranged E0, P,
The relationship of I1, Ld, n1 and Udc are allowed to meet (E0-P × I1 × Ld) × n1 >=0.6Udc, so that magneto 20 is in low speed rotation
Equally there is efficient performance when dynamic and high-speed rotation, to realize product in the purpose of full frequency band performance with higher；
Further, by the way that preset rotation speed n1 is rationally arranged, so that revolving speed n1 < n0, and n0-n1≤1r/s, close to critical speed n0
Revolving speed n1 when, winding 206 be in star join schema under magneto 20 have certain weak magnetic angle, magneto 20
Performance rises with revolving speed and is declined, when the revolving speed of magneto 20 is greater than critical speed n0, and very close critical speed n0
When revolving speed, winding 206 be in Angle connection mode under 20 weak magnetic of magneto, the performance of magneto 20 with the rising of revolving speed and
Rise, to guarantee near critical speed n0, with certain weak magnetic depth when star-like connection, and has one in Angle connection
The range that the revolving speed of fixed magneto 20 rises without weak magnetic, so that the connection type of the winding 206 of magneto 20 carries out
If switching, switching is more smooth, can greatly reduce impact, transition is more stable, improves the operational energy efficiency of product, improves
The service performance and the market competitiveness of product.Specifically, the unit of critical speed n0 is rps, and the unit of busbar voltage Udc is V,
The unit of unloaded back emf coefficient E0 is V/rps, and the unit of preset rotation speed n1 is rps, and the unit of d-axis inductance Ld is H, output
The unit of electric current I1 is A.
In specific embodiment, as shown in Figure 1, switching switch 40 quantity be 6, respectively S1, S2, S3, S4, S5 and
S6.Magneto 20 is powered by frequency converter 10, and 6 switching switches 40 are arranged in connection component.As shown in Figures 2 and 3,
When S1, S2 and S3 are connected, and S4, S5 and S6 are disconnected, the winding 206 of magneto 20 is in star-like connection.As shown in Figure 4 and Figure 5,
When S1, S2 and S3 are disconnected, and S4, S5 and S6 are connected, the winding 206 of magneto 20 is in Angle connection.
In one embodiment of the invention, it is preferable that the value range of n0 are as follows: n0 >=40r/s.
In this embodiment, it by the way that the value range of critical speed n0 is rationally arranged, is allowed to work as permanent magnetism for n0 >=40r/s
When the revolving speed of motor 20 is located within critical speed n0, the efficiency of the magneto 20 of star-like connection winding 206 is in decline mould
Formula, and the efficiency of the magneto 20 of Angle connection winding 206 is in ascending fashion, thus guarantee product full frequency band have compared with
High performance, meanwhile, if the connection type of the winding 206 of magneto 20 switches in above-mentioned zone, switch more suitable
Freely, can greatly reduce impact, transition is more stable, improves the operational energy efficiency of product, improve product service performance and
The market competitiveness.
In one embodiment of the invention, it is preferable that magneto 20 is three-phase motor with permanent magnets.
In this embodiment, magneto 20 is not limited to three-phase motor with permanent magnets, also can be other multi-phase permanent motors.
In one embodiment of the invention, it is preferable that as shown in fig. 6, magneto 20 includes: stator 202, be provided with
Stator core 204 and the winding 206 being wrapped on stator core 204；Rotor 208 is arranged in the installation cavity of stator 202, turns
Son 208 is provided with rotor core 210 and the permanent magnet 212 on rotor core 210.
In this embodiment, stator 202 includes stator core 204 and winding 206, by the way that winding 206 is wrapped in stator
On iron core 204, stator 202 compressor 1 run when be it is stationary, when electric current is after winding 206, stator 202 can be produced
Magnetisation field；Rotor 208 includes rotor core 210 and permanent magnet 212, and the magnetic pole of permanent magnet 212 will not change, by by permanent magnet
212 are arranged on rotor core 210, so that rotor 208 is arranged in the installation cavity of stator 202 when compressor 1 works, it is fixed
Son 202 generates rotating excitation field, and it is compressor 1 that rotor 208, which by magnetic force line cutting and then generates output electric current in rotating excitation field,
Operating provides power.
In one embodiment of the invention, it is preferable that the winding 206 of stator 202 is threephase stator winding, every phase stator
202 winding 206 includes first connector 214 and tail connector 216, and all head connector 214 is connected with a connecting terminal of compressor 1
It connects, whole tail connectors 216 are connected with another connecting terminal of compressor 1.
In this embodiment, the winding 206 of every phase stator 202 includes first connector 214 and tail connector 216, by threephase stator
The all first connector 214 of winding is connected with a connecting terminal of compressor 1, whole tail connectors 216 of threephase stator winding
It is connected with another connecting terminal of compressor 1, and connection component is connected with two connecting terminals of compressor 1 respectively
It connects, in this way, the different connection types of winding 206, e.g., star-like connection and angle can be realized by the different movements of connection component
Shape connection.
In specific embodiment, permanent magnet 212 is rare-earth permanent magnet；Or permanent magnet 212 is iron oxygen permanent magnet.
In specific embodiment, rotor core 210 includes slot, and the quantity of slot is at least one, and whole slots are along rotor
The circumferentially-spaced distribution of iron core 210, permanent magnet 212 are arranged in slot.Specifically define a kind of permanent magnet 212 of rotor 208
The plan of establishment.By processing slot on rotor core 210, installation site can be provided for permanent magnet 212, be convenient for permanent magnet
212 positioning and assembly.Meanwhile the structure setting manufacturing procedure is few, processing technology is simple, and production cost is low, is convenient for volume production.
In specific embodiment, permanent magnet 212 is cylindrical in shape, and permanent magnet 212 is set on the outer wall of rotor core 210.Specifically
Define a kind of 212 plan of establishment of permanent magnet of rotor 208.It is set in by permanent magnet 212 on the outer wall of rotor core 210,
Rotor core 210 plays the role of support, convenient for the positioning and assembly of permanent magnet 212.Meanwhile the structure setting manufacturing procedure
Few, processing technology is simple, and production cost is low, is convenient for volume production.
In specific embodiment, as shown in fig. 6, magneto 20 is 9 slot, 6 pole structure.By taking the series connection of every phase winding 206 as an example,
All there is every phase winding 206 first connector 214 and tail connector 216, first connector 214 and tail connector 216 to be separately connected lead-out wire.According to
Practical application, the connector of every phase winding 206 can also be 2k (k=1,2 ...).
As shown in fig. 7, embodiment according to the second aspect of the invention, it is also proposed that a kind of refrigeration equipment, comprising: second shell
Body 30；Frequency converter 10 is arranged in second shell 30；Compressor 1 as described in technical solution any in first aspect, compressor
1 is arranged in second shell 30；Connection component is arranged in second shell 30, is separately connected frequency converter 10 and compressor 1；Control
Device processed is arranged in second shell 30, connection connection component, frequency converter 10 and compressor 1, for controlling frequency converter 10 and compression
Machine 1, so that the relationship of E0, P, I1, Ld, n1 and Udc meet: (E0-P × I1 × Ld) × n1 >=0.6Udc.
Refrigeration equipment provided by the invention includes: second shell 30, frequency converter 10, compressor 1, connection component and control
Device.By the way that controller is arranged, so that the winding 206 in magneto 20 is in star-like connection, controller controls frequency converter 10 and pressure
Contracting machine 1, so that the relationship of E0, P, I1, Ld, n1 and Udc meet: (E0-P × I1 × Ld) × n1 >=0.6Udc, and then guarantee forever
For the revolving speed of magneto 20 when very close to critical speed, winding 206 has certain weak magnetic in the magneto 20 of star connection
Depth, winding 206 does not enter in the weak magnetic region in the magneto 20 of angular connection, to guarantee that product has in full frequency band
Higher performance, and ensure that the winding 206 of magneto 20 connection type switching without clamping stagnation, switching it is more smooth, protect
The stationarity of transition is demonstrate,proved.
In one embodiment of the invention, it is preferable that as shown in Figure 1, the input current when frequency converter 10 is alternating current
When, frequency converter 10 includes: rectifier 102；Inverter 104 connects rectifier 102.
In this embodiment, according to the composition for determining frequency converter 10 the characteristics of the input current of frequency converter 10, work as frequency conversion
When the input current of device 10 is alternating current, frequency converter 10 includes rectifier 102 and inverter 104, the input current of frequency converter 10
After filtering by rectifier 102, so that alternating current is converted into direct current, and direct current is supplied into inverter 104.
In one embodiment of the invention, it is preferable that when the input current of frequency converter 10 is direct current, frequency converter 10
Including inverter 104.
In this embodiment, according to the composition for determining frequency converter 10 the characteristics of the input current of frequency converter 10, work as frequency conversion
When the input current of device 10 is direct current, frequency converter 10 includes inverter 104, is changed into direct current energy using inverter 104
Alternating current.
In one embodiment of the invention, it is preferable that as shown in Figure 1, connection component includes: switching switch 40, be used for
Realize the winding 206 of magneto 20 in star-like connection and in the switching of Angle connection.
In this embodiment, switch 40 is switched by setting, realizes permanent magnetism using opening or closing for switch 40 is switched
The winding 206 of motor 20 and the connection status of frequency converter 10, and then the winding 206 of realization magneto 20 is in star-like connection and forever
The winding 206 of magneto 20 is in Angle connection.Meanwhile the structure setting it is easy to process, installation and subsequent disassembly, replacement, mutually
It is transsexual strong.
In one embodiment of the invention, it is preferable that refrigeration equipment further include: detection device is arranged in second shell
In 30, controller and compressor 1 are connected.
In this embodiment, by the way that detection device is arranged in second shell 30, detection device real-time detection permanent magnetism is utilized
The revolving speed of motor 20 judges whether the revolving speed of magneto 20 reaches preset rotation speed n1 for controller, provides real time data, just
And timely control other component movement accurate in controller, to ensure that the reliability and accuracy that product uses.
In the present invention, term " multiple " then refers to two or more, unless otherwise restricted clearly.Term " peace
Dress ", " connected ", " connection ", the terms such as " fixation " shall be understood in a broad sense, can also be with for example, " connection " may be a fixed connection
It is to be detachably connected, or be integrally connected；" connected " can be directly connected, can also be indirectly connected through an intermediary.It is right
For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the description of this specification, the description of term " one embodiment ", " some embodiments ", " specific embodiment " etc.
Mean that particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least one reality of the invention
It applies in example or example.In the present specification, schematic expression of the above terms are not necessarily referring to identical embodiment or reality
Example.Moreover, description particular features, structures, materials, or characteristics can in any one or more of the embodiments or examples with
Suitable mode combines.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of compressor is used for refrigeration equipment, the refrigeration equipment includes connection component and one end with the connection component
The frequency converter being connected, which is characterized in that the compressor includes:
First shell；
Magneto is arranged in the first shell, connects the other end of the connection component；
The critical speed of the magneto is n0；
The number of poles of the magneto is P；
When the winding of the magneto is in star-like connection:
The busbar voltage of the frequency converter is Udc；
The unloaded back emf coefficient of the magneto is E0；
When the preset rotation speed of the magneto is n1, the d-axis inductance of the magneto is Ld, the frequency converter it is defeated
Electric current is I1 out；
The relationship satisfaction of the E0, the P, the I1, the Ld, the n1 and the Udc: (E0-P × I1 × Ld) × n1 >=
0.6Udc；
Wherein, n1 < n0, and n0-n1≤1r/s；When the winding of the magneto is in star-like connection, the magneto turns
Speed is less than the n0.
2. compressor according to claim 1, which is characterized in that
The value range of the n0 are as follows: n0 >=40r/s.
3. compressor according to claim 1, which is characterized in that
The magneto is three-phase motor with permanent magnets.
4. compressor according to any one of claim 1 to 3, which is characterized in that
The magneto includes:
Stator, the winding for being provided with stator core and being wrapped on the stator core；
Rotor is arranged in the installation cavity of the stator, and the rotor is provided with rotor core and is located on the rotor core
Permanent magnet.
5. compressor according to claim 4, which is characterized in that
The winding of the stator is threephase stator winding, and the winding of stator described in every phase includes that head meets head and tail connector, whole institutes
It states first connector to be connected with a connecting terminal of the compressor, another of all the tail connectors and the compressor connect
Line terminals are connected.
6. a kind of refrigeration equipment characterized by comprising
Second shell；
Frequency converter is arranged in the second shell；
Compressor as described in any one of claims 1 to 5, the compressor are arranged in the second shell；
Connection component is arranged in the second shell, is separately connected the frequency converter and the compressor；
Controller is arranged in the second shell, connects the connection component, the frequency converter and the compressor, be used for
The frequency converter and the compressor are controlled, so that the pass of the E0, the P, the I1, the Ld, the n1 and the Udc
System meets: (E0-P × I1 × Ld) × n1 >=0.6Udc.
7. refrigeration equipment according to claim 6, which is characterized in that
When the input current of the frequency converter is alternating current,
The frequency converter includes:
Rectifier；
Inverter connects the rectifier.
8. refrigeration equipment according to claim 6, which is characterized in that
When the input current of the frequency converter is direct current,
The frequency converter includes inverter.
9. the refrigeration equipment according to any one of claim 6 to 8, which is characterized in that
The connection component includes:
Switching switch, for realizing the magneto winding in star-like connection be in Angle connection switching.
10. the refrigeration equipment according to any one of claim 6 to 8, which is characterized in that further include:
Detection device is arranged in the second shell, connects the controller and the compressor.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP18897970.2A EP3687058B1 (en) | 2018-01-03 | 2018-08-23 | Compressor and refrigeration device |
| PCT/CN2018/102029 WO2019134373A1 (en) | 2018-01-03 | 2018-08-23 | Compressor and refrigeration device |
| JP2020526512A JP7341136B2 (en) | 2018-01-03 | 2018-08-23 | Compressor and cooling equipment |
| ES18897970T ES2913801T3 (en) | 2018-01-03 | 2018-08-23 | Compressor and refrigeration device |
| US16/867,710 US11486614B2 (en) | 2018-01-03 | 2020-05-06 | Compressor and refrigeration device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810005375 | 2018-01-03 | ||
| CN2018100053755 | 2018-01-03 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108288938A CN108288938A (en) | 2018-07-17 |
| CN108288938B true CN108288938B (en) | 2019-06-04 |
Family
ID=62834402
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810308108.5A Active CN108288938B (en) | 2018-01-03 | 2018-04-08 | Compressor and refrigeration equipment |
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| Country | Link |
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| CN (1) | CN108288938B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7341136B2 (en) | 2018-01-03 | 2023-09-08 | 広東美芝制冷設備有限公司 | Compressor and cooling equipment |
| CN111245325A (en) * | 2018-11-28 | 2020-06-05 | 安徽美芝精密制造有限公司 | Star-delta switching method of three-phase winding and air conditioner |
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| CN2233889Y (en) * | 1995-08-31 | 1996-08-28 | 大连海事大学 | Frequency-changing speed-regulating refrigerator for ship freeze preservation container |
| CN102007669A (en) * | 2008-05-21 | 2011-04-06 | 东芝开利株式会社 | Permanent magnet motor, hermetic compressor, and refrigerating cycle device |
| CN107171522A (en) * | 2017-06-30 | 2017-09-15 | 广东美芝制冷设备有限公司 | Magneto, compressor and refrigeration system |
| CN107370257A (en) * | 2017-08-31 | 2017-11-21 | 广东美芝制冷设备有限公司 | A kind of magneto and compressor |
| CN107425625A (en) * | 2017-08-31 | 2017-12-01 | 广东美芝制冷设备有限公司 | A kind of motor and compressor |
| CN208028805U (en) * | 2018-01-03 | 2018-10-30 | 广东美芝制冷设备有限公司 | Compressor and refrigeration equipment |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001037186A (en) * | 1999-07-19 | 2001-02-09 | Toshiba Kyaria Kk | Permanent magnet motor |
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2018
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2233889Y (en) * | 1995-08-31 | 1996-08-28 | 大连海事大学 | Frequency-changing speed-regulating refrigerator for ship freeze preservation container |
| CN102007669A (en) * | 2008-05-21 | 2011-04-06 | 东芝开利株式会社 | Permanent magnet motor, hermetic compressor, and refrigerating cycle device |
| CN107171522A (en) * | 2017-06-30 | 2017-09-15 | 广东美芝制冷设备有限公司 | Magneto, compressor and refrigeration system |
| CN107370257A (en) * | 2017-08-31 | 2017-11-21 | 广东美芝制冷设备有限公司 | A kind of magneto and compressor |
| CN107425625A (en) * | 2017-08-31 | 2017-12-01 | 广东美芝制冷设备有限公司 | A kind of motor and compressor |
| CN208028805U (en) * | 2018-01-03 | 2018-10-30 | 广东美芝制冷设备有限公司 | Compressor and refrigeration equipment |
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| CN108288938A (en) | 2018-07-17 |
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