CN107882706A - A kind of hybrid power compressor and chilled water system and chilled water system control method - Google Patents
A kind of hybrid power compressor and chilled water system and chilled water system control method Download PDFInfo
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- CN107882706A CN107882706A CN201711415648.5A CN201711415648A CN107882706A CN 107882706 A CN107882706 A CN 107882706A CN 201711415648 A CN201711415648 A CN 201711415648A CN 107882706 A CN107882706 A CN 107882706A
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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
- F04B35/002—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 driven by internal combustion engines
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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
- F04B35/006—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 driven by steam engines
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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
-
- 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
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B31/00—Compressor arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
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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
- H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
- H02P23/06—Controlling the motor in four quadrants
- H02P23/07—Polyphase or monophase asynchronous induction motors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention discloses a kind of hybrid power compressor, including engine, electric motor units and compressor, wherein compressor uses the opened compressor with overhanging drive shaft, can use engine, motor driven compressor, moreover it is possible to generate electricity；A kind of chilled water system is also disclosed, comprising two or more compressors, wherein at least has a compressor to use hybrid power compressor, is generated electricity using hybrid power compressor and drives other compressors；The present invention also provides a kind of control method of chilled water system.The present invention realizes the mutual supplement with each other's advantages of electric power and fuel, and has plurality of operating modes, and efficiency of energy utilization is high, possesses significant economic benefit and social benefit.
Description
Technical field
The present invention relates to fuel gas generation and refrigerating field, more particularly to a kind of hybrid power compressor and chilled water system and control
Method processed.
Background technology
At present compressor of air conditioner no matter large scale computer or light duty compressor, substantially using driven by power, or automobile etc. row
Industry uses fuels and energy compressor, the air-conditioning system for not integrating driven by power and fuel driven.Wherein air conditioner load is adjusted
It is general to use interval start and stop compressor, or using the higher frequency converter of cost, to change compressor electric motor rotating speed.
The content of the invention
The present invention provides a kind of technology, and generator is directly connected with opened compressor motor, electric power can be used to drive
Dynamic compressor, also can easily use engine driving compressor, and when air-conditioning system has multiple compressors, can be by more
Compressor power driving is integrated, by by adjusting engine speed, changing generation frequency, can be achieved with adjusting without frequency converter
Save the function of the frequency of other its compressors.Its technical solution is as follows：
A kind of hybrid power compressor, it is characterised in that including engine, electric motor units and compressor；Wherein compressor uses
Opened compressor with overhanging drive shaft, generally open-type centrifugal compressor, open-type helical-lobe compressor or open-type
Piston machine；The both ends of the electric motor units are respectively provided with outwardly directed power transmission shaft, including stator, rotor and bearing, wherein stator
Including stator core and stator winding；After the power transmission shaft of the engine and the power transmission shaft of electric motor units are directly connected in series, then
With the transmission axis connection of compressor；The engine uses fuel combustion, gas turbine or steam turbine, or gas turbine and
Steam turbine combining form, wherein fuel can use natural gas or petrol and diesel oil etc..
The engine is connected with the overhanging power transmission shaft of the first end of electric motor units by prime coupling device；Electric motor units
The overhanging power transmission shaft in the second end be connected by rear class coupling device with the power transmission shaft of compressor；The prime coupling device is company
Axle device or clutch；Rear class attachment means are shaft joint or clutch.
Allow four axles of engine, electric motor units and compressor to connect directly to drive, more efficient, structure is simpler, more in maintenance.
As internal combustion engine drive dynamotor output 50Hz three-phase alternating currents when, some rotating speeds are 3000r/min, and existing open-type pressure
Drive motor rotating speed when 50Hz three-phase alternating-current supplies drive in the two poles of the earth is about 2960r/min used by contracting machine, the two rotating speed
It is essentially the same, so that above-mentioned straight drive is connected to become possibility.
Coupling device is shaft joint or clutch.
Coupling device is arranged between generator and motor shaft, transmits the torque between power transmission shaft；Shaft joint is
Finger is connected two power transmission shafts with ring flange and bolt, is a kind of connected mode of fixation using shaft joint connection, is used
Clutch connection is a kind of flexible connected mode.
Coupling device uses electric control clutch or Mechanical controllable clutch, the mechanical clutch such as controlled manually.Clutch
It is nested respectively to be fixed on corresponding power transmission shaft including driving disc spacing pressing and clutch plate, when transmission control module control clutch is inhaled
During conjunction, driving disc spacing pressing and clutch plate synchronous axial system so that two power transmission shaft synchronous axial systems；During clutch separation, two power transmission shafts it
Between do not transmit torque.
Another coupling device is ring flange shaft joint, including driving disc spacing pressing, middle linkage section and clutch plate, wherein among connect
Flexible connection piece can be also provided with by connecing the both sides of section, driving disc spacing pressing and clutch plate respectively it is nested be fixed on corresponding to power transmission shaft on；When
After being connected between driving disc spacing pressing, flexible connection piece, middle linkage section and clutch plate with bolt nut, driving disc spacing pressing and clutch plate are same
Step rotates, and drives two power transmission shaft synchronous axial systems, otherwise removes bolt nut, two power transmission shaft separation；Driving disc spacing pressing and driven
Dish structure is just the same to exchange.
Further, when electric motor units stator, rotor and the power transmission shaft be in it is horizontally disposed when, positioned at the electric motor units
One or more antigravity Exciting Windings for Transverse Differential Protection are included in stator winding above rotor；The antigravity Exciting Windings for Transverse Differential Protection passes through in motor
Increase extraction wire between unit stator winding and obtain, the antigravity Exciting Windings for Transverse Differential Protection can be with other stators by extraction wire
Winding electrical separation, the loop for the work that can independently be powered is formed, is also accessible in stator winding loops.
Main material is iron core in electric motor units rotor, can be to rotor when the antigravity Exciting Windings for Transverse Differential Protection is passed through electric current
Interior iron core produces the electromagnetic attraction of upward bob-weight force direction, and the electromagnetic attraction can allow the horizontal supporting shaft of electric motor units power transmission shaft
Hold, or reduce together with engine and the horizontal support bearing of compressor power transmission shaft, suffered pressure straight down or be zero, this
When operating mode be engine driving compressor, electric motor units do not generate electricity or not driven.
Because engine, electric motor units and compressor are to be horizontally mounted, and the moving component in four, motor list
The weight of first rotor and power transmission shaft is more with respect to what miscellaneous part to be weighed, and frictional force caused by bearing is only and bearing during drive axis
The vertical radial pressure born is relevant, and unrelated with the level of torque of compressor load and power transmission shaft, once the pressure reduces very
Most zero, frictional resistance when bearing rotates will be substantially reduced, while vibrations and noise can be reduced.This plain bearing adds rotor
It is similar with magnetic bearing structure with the frame mode of antigravity Exciting Windings for Transverse Differential Protection, can subtract the gravity that bearing radial direction is born
It is small or even to zero, equivalent under weightlessness, obtain the effect for being similar to magnetic suspension bearing.
Due to using engine, generator and motor and the direct cascaded structure of compressor, now whole electric motor units are not
Only into connection engine and the power transmission shaft and flywheel of compressor, engine and compressor itself power transmission shaft can be supported by also turning into
Antigravity bearing.And antigravity Exciting Windings for Transverse Differential Protection structure, it is not necessary to additionally increase part on electric motor units body, but combine
Electric motor units existing bearing, rotor and stator, by optimizing stator winding, produce unique antigravity Exciting Windings for Transverse Differential Protection structure, make
Existing electric motor units turn into a huge antigravity bearing, and the antigravity inertial flywheel that a performance is more high-quality.
Further, described electric motor units are generator, motor, compound motor or group of motors；Compound motor is
Referring to the electric motor units can use and can be used as motor as generator；Group of motors is include being sequentially connected in series at least two
Individual sub- electric motor units.As electric motor units are connected using two motor coaxles, wherein a motor connection motor module, is used as power
The motor of output, another motor are connected with electricity generation module, make the generator of electric power output；Or use bimorph transducer totally one
The motor of rotor, one of stator are connected with motor module, make the motor stator of input power, another stator and hair
Electric module is connected, and makees the generator unit stator of out-put supply.
The electric motor units are also used as the power of engine power generation unit startup：Before an engine is started, allow electronic
Machine connects motor module, and engine rotation is driven by motor；After engine start is completed, motor and motor
Module disconnects.
Further, the speed change gear of conversion is additionally provided with for rotating speed or turned on the coupling device, when the rotating speed of engine
Or when steering and the inconsistent rotating speed of compressor, the two rotating speed or steering is set to reach consistent by speed change gear, typically using tooth
Wheel-speed regulating change box or belt sheave structure.
Further, described hybrid power compressor also includes hybrid power compressor electronic control system, respectively with engine
Mechanical, electrical machine unit, compressor, coupling device electrical connection；Engine, electric motor units and compressor are controlled by electric-control system.
Including for engine control module, motor control module and compressor control module；
（1）Engine control module controls the operation of engine；
（2）Motor control module includes at least one of motor module, electricity generation module or antigravity control module.
The output end connection electric motor units of the motor module, the input connection external power source of motor module, are used
It is the motor in motor in obtaining electric energy from external power source；Motor module can also use frequency-adjustable power supply, can root
According to compressor load adjust automatically motor speed.
The input of the electricity generation module is connected with electric motor units, and the output end of electricity generation module connects with outside power load
Connect；For electric energy caused by generator to be output into external loading, external loading such as lighting unit etc..When electric control system controls electricity
When motivation module is connected with electric motor units, electric motor units are operated in electric motor mode；When electric control system controls electricity generation module and electricity
When machine unit is connected, electric motor units are operated in generator mode.Motor module and electricity generation module, which can also integrate, is combined into an electricity
Machine control module.
The antigravity control module output end is connected with the lead of antigravity Exciting Windings for Transverse Differential Protection, input connection external electrical
Source, including Energizing unit and switch unit；Wherein switch unit control antigravity Exciting Windings for Transverse Differential Protection and the connection of other stator winding
With separating；Energizing unit is used to control external power source to provide power supply for the antigravity Exciting Windings for Transverse Differential Protection of motor stator, and controls to electricity
The direction of machine rotor electromagnetic attraction and size；When switch unit disconnects, electric motor units are operated in antigravity bearing pattern, excitation
Unit is connected with antigravity Exciting Windings for Transverse Differential Protection, is rotated even if rotor is driven by other equipment, also rotor can be produced lasting
The electromagnetic attraction of bob-weight force direction；When switch unit closes, antigravity Exciting Windings for Transverse Differential Protection is returned into motor or generator
In stator winding, electric motor units return to electric motor mode or generator mode.
（3）The compressor control module is connected with compressor, controls its operation, including spatial load forecasting.
（4）When coupling device uses electric control clutch, electric-control system also includes being used to control clutch to connect and separate
Transmission control module.Transmission control module coupling device connects, and controls it to connect and separate.
Hybrid power compressor electronic control system can be connected with air conditioning system controller or external communications units are connected；Outside is logical
Believe that unit is used at the scene or remote control controls electric-control system.Such as by the Fieldbus Control electric-control system at scene, or lead to
Cross long distance wireless（3G, 4G or 4G etc.）It is or wired（Internet）Control electric-control system.
Further, antigravity Exciting Windings for Transverse Differential Protection is the winding being independently arranged in electric motor units stator.
A kind of cooling-water machine system, including compressor, condenser, evaporator, choke valve, cooling-water machine electric-control system etc., are used for
Chilled water.Cooling-water machine electric-control system is connected with hybrid power compressor electronic control system, and throttling is provided between condenser and evaporator
Device, refrigerant are made to circulate between evaporator, condenser and compressor, and produce by the compressible drive of compressor
Phase transformation and temperature change, low-temperature refrigerant exchanges heat with recirculated water in evaporator, exports cold water, passes through water lines and water pump is sent into room
Interior tail-end blower fan coil pipe, is indoor offer cold air, and high temperature refrigerant passes through condenser and cooling water and outside air in condenser
Radiating.
The number of units of wherein described compressor is two or more, and an at least compressor uses hybrid power pressure
Contracting machine, other compressors can also use hybrid power compressor, or the compressor using single driven by power, the pressure of single driven by power
Contracting machine refers to that such as totally-enclosed or semi-hermetic piston-type, vortex, rotator type, screw, centrifugal compressor, or open-type are lived
Plug, screw, centrifugal compressor etc., using driven by power.
In above-mentioned chilled water system, two or more compressors can share a set of condenser, steaming using parallel way
Send out device, choke valve, cold water electric-control system, equivalent to one multi-machine heads handpiece Water Chilling Units；Also there can be a set of independence per compressor
Condenser, evaporator, choke valve, cold water electric-control system, equivalent to more handpiece Water Chilling Units parallel connections.
A kind of control method of chilled water system, using foregoing chilled water system, the chilled water system control method, including list
The control method of platform hybrid power compressor, and hybrid power compressor operating is controlled in following any single cpu mode：
（1）Single cpu mode 1：Compressor is independently driven by engine
The prime coupling device and rear class coupling device being also turned between electric motor units and engine and compressor, and by motor
Unit disconnects with external circuit, optionally connects electric motor units and antigravity control module；Motor is in rotor and passively dallied
State, engine is run, by engine driving compressor operating.
（2）Single cpu mode 2：Compressor is operated alone in electric power
The rear class coupling device allowed between electric motor units and compressor is connected, and the prime allowed between electric motor units and double dynamical machine
Coupling device separates, and double dynamical machine does not work；Power module in electric motor units access electric-control system, motor are in motor mould
Formula；Transmitted electricity by external power source and drive compressor by electric motor units.
（3）Single cpu mode 3:Engine combines driving compressor with electric power
The prime coupling device and rear class coupling device being also turned between electric motor units and engine and compressor；Operation is started
Machine, electric motor units access power module, and connected with external power source, motor is in electric motor mode；By engine and motor list
Member joint driving compressor operating.
（4）Single cpu mode 4:Engine driving compressor and synchronous generator
The prime coupling device and rear class coupling device being also turned between electric motor units and engine and compressor；Operation is started
Machine, synchronous driving motor rotor and compressor, motor are in power generation mode, electric motor units access electricity generation module, to outside electricity consumption
Load conveys electric energy.
（5）Single cpu mode 5；Single-shot electricity output
The rear class coupling device allowed between electric motor units and compressor separates, and the preceding cascade allowed between electric motor units and engine
Shaft device is connected, and electric motor units access electricity generation module, motor is in power generation mode；Engine is run, drive motor units, is passed through
Electricity generation module, specially convey electric energy to outside power load.
Further, the chilled water system control method also includes the control method between multiple compressors, and controls more
Following any multimachine pattern is operated between compressor；
（1）Multimachine pattern 1：
When single cpu mode 4 or single cpu mode 5 of any hybrid power compressor operating in chilled water system in the output that can generate electricity,
Engine is run with stabilized (steady-state) speed, and generate electricity the stable 50Hz or 60Hz power supplys of output, drives the automatically controlled system of cold water in chilled water system
System, other compressors or other outside power loads, such as water pump, room lighting.
（2）Multimachine pattern 2：
Any hybrid power compressor operating in chilled water system is in single cpu mode 4 or single cpu mode 5, and generating electricity, it is cold to be only conveyed to
Other compressors in water system；Generating output frequency can be changed by changing the rotating speed of hybrid power compressor intrinsic motivation,
So as to control the rotating speed of other compressors.
（3）Multimachine pattern 3：
When the single cpu mode for having two or more hybrid power compressors, all operating in the output that can generate electricity in chilled water system
4 or during single cpu mode 5, every engine is run with stabilized (steady-state) speed, and generate electricity the stable 50Hz or 60Hz power supplys of output, common driving
Cold water electric-control system, other compressors or other outside power loads in chilled water system, such as water pump, room lighting.
In this pattern and multimachine pattern 1, using the electric power of hybrid power compressor itself offer, rectification can be driven empty
Adjusting system, without outside public electric wire net also can independent operating, or even allow rectification building can depart from external electrical network.
（4）Multimachine pattern 4：
When the single cpu mode for having two or more hybrid power compressors, all operating in the output that can generate electricity in chilled water system
4 or during single cpu mode 5, every engine is run with same rotational speed, and generate electricity other compressions being conveyed to jointly in chilled water system
Machine；Generating output frequency can be changed, by changing the rotating speed of hybrid power compressor intrinsic motivation so as to control other compressors
Rotating speed.
For handpiece Water Chilling Units, many times need to operate in low load condition, usually through frequently stopping compressor, or
The discharge capacity of compressor is controlled to realize；But optimal mode is to change compressor electric motor frequency of supply, reduces compressor electric motor
Rotating speed, optimal Energy Efficiency Ratio can be obtained.But the price of frequency converter is relatively expensive, complicated and reliability is not as simply connecing
Tentaculum controls.Particularly with powerful compressor variable frequency device, its price is nearly close to Same Efficieney engine and generator
Total price, and the rotating speed for changing engine no at all increases any cost, is its basic function.
Therefore existing motor can be made full use of under multimachine pattern 3 or 4, just can be light by simply changing engine speed
Pine changes the working frequency of other compressors, simple and reliable.
In addition when compressor is used for high-speed permanent magnetic synchronous motor, such as centrifugal compressor, wheel speed is up to
50 Hz or 60Hz liftings are arrived 250-500Hz, the price of frequency converter is very by 15000-30000 r/min, it is necessary to extraordinary frequency converter
To the price for exceeding high-speed permanent magnet motor.And the present invention is used, increase by using high speed engine, such as gas turbine, or gear
Speed, and High Speed Permanent Magnet Synchronous Generator, the power supply for the 250-500Hz that can easily obtain.
Beneficial effect：
The invention discloses a kind of hybrid power compressor, chilled water system and control method, main innovation point are as follows：
1. one of innovation：Rotor simplifies when transmission flywheel, system.
By taking being linked in sequence of engine, electric motor units and compressor as an example, when individually use fuel driven compressor, press
Contracting machine must first drive motor units, then drive compressor, though now motor does not produce power, also do not generate electricity, rotor is passively empty
Turn, but served as between engine and compressor with buffering, stable inertial flywheel.
System relative to other using engine and motor parallel, by motor point when by engine driving compressor
From although the friction of motor idle running, complicated, poor practicability can be reduced.And use the layout structure of mechanical series real
Existing engine direct drive compressor, transmission efficiency, is not only convenient for motor and compressor is operated alone, also allow for engine and independently send out
Electricity, make whole device simple and reliable for structure, while grafting can be facilitated existing and very ripe fuel generator and compressor skill
Art, make the present invention that there is good practicality.
The two of innovation：Electric motor units are transformed into antigravity bearing, system high efficiency.
When motor only makees power transmission shaft and inertial flywheel, because rotor weight is heavier, certain friction energy loss can be produced, and
Due to using the structure of antigravity Exciting Windings for Transverse Differential Protection in motor, it will not only increase frictional force, can also reduce whole system on the contrary
Frictional resistance.
By increasing extraction wire in electric motor units stator, isolated in stator winding top it is one or more groups of around
Group, as antigravity Exciting Windings for Transverse Differential Protection, and to its independent energization, using stator core and rotor core, forming one can be by rotor
The electromagnet structure up attracted, by control electric current, electromagnetic attraction size is set to allow the horizontal of electric motor units power transmission shaft to prop up
Support bearing or together with suffered by the horizontal support bearing of engine and compressor power transmission shaft pressure straight down reduce or be zero.
Because engine, electric motor units and compressor are horizontal installation, and the moving component in three, motor list
The weight of first rotor and power transmission shaft is more with respect to what miscellaneous part to be weighed, and frictional force caused by bearing is only and bearing during drive axis
The vertical radial pressure born is relevant, and unrelated with the level of torque of compressor load and power transmission shaft, once the pressure reduces very
Most zero, frictional resistance when bearing rotates will be substantially reduced, while vibrations and noise can be reduced.
This plain bearing adds rotor and the frame mode of antigravity Exciting Windings for Transverse Differential Protection, energy similar with magnetic bearing structure
The gravity for bearing bearing radial direction reduces even to zero, and equivalent under weightlessness, acquisition is similar to magnetic suspension shaft
The effect held.
Due to using engine, electric motor units and the direct cascaded structure of compressor, now whole electric motor units not only into
Connect the power transmission shaft and flywheel of engine and compressor, coupling device using when being rigidly connected, also turn into can support engine and
The antigravity bearing of compressor itself power transmission shaft, thus the entirety of this generation antigravity effect is named as antigravity bearing.
Electric motor units become bearing, and antigravity Exciting Windings for Transverse Differential Protection structure seems very complicated, but in fact and need not be in electric motor units
On body again additionally increase part, bearing, rotor and stator are all that electric motor units itself are existing, simply by optimization stator around
Group, increase extraction wire, produce unique antigravity Exciting Windings for Transverse Differential Protection structure, existing electric motor units is turned into a huge bob-weight
Power bearing, and a more high-quality zero-g inertial flywheel, and cost only has some thousandths of of magnetic suspension bearing, this is exactly this
Invent ingenious part.
It is right by the switch unit in antigravity control module when electric motor units need to recover to generate electricity with driving function
The lead of antigravity Exciting Windings for Transverse Differential Protection switches over, and antigravity Exciting Windings for Transverse Differential Protection is returned to immediately in the stator winding of electric motor units.
The three of innovation：With driven compressor compressor
For air-conditioning, many times are needed to operate in low load condition, and compressor, or control compression are stopped usually through frequent
The discharge capacity of machine is realized；But optimal mode is to reduce compressor electric motor frequency of supply, reduces the rotating speed of compressor electric motor, can obtain
Obtain Energy Efficiency Ratio most preferably.But the price of frequency converter is relatively expensive, complicated and reliability controls not as simple contactor.
Particularly with powerful compressor variable frequency device, its price nearly close to Same Efficieney engine and generator total price, and
Change the rotating speed very simple of engine, also no at all increase any cost, be its basic function.
Existing engine and generator are made full use of in the present invention, is started by simply changing in hybrid power compressor
Machine rotating speed, it just can easily change the working frequency of other compressors, it is simple and reliable.
In addition when compressor is used for high-speed permanent magnetic synchronous motor, such as centrifugal compressor, wheel speed is up to
15000-30000 r/min are arrived the 50 Hz or 60Hz supply frequencies lifting of external electrical network, it is necessary to using extraordinary frequency converter
250-500Hz, its price are even more than the price of high-speed permanent magnet motor.And the present invention is used, by using high speed engine, such as
Gas turbine, or using the very ripe gear speedup case of technology, and High Speed Permanent Magnet Synchronous Generator, the 250- that can easily obtain
500Hz power supply.
The present invention has advantage following prominent：
This invention simplifies the cold-electric-thermal co-generation system being widely used at present, improves system effectiveness, reduces floor space, and
And wide adaptability, external electrical network time-of-use tariffs are made full use of, operating cost can be reduced, while can also improve summer external electrical network
Stability, combustion gas and electric power is allowed to realize have complementary advantages, while Dual-energy source system is more safe and efficient.
1. reducing operating cost, perfection realizes that combustion gas is complementary with power price.
For many users for using tou power price, when daytime power network be in crest, when electricity price is high, more passed through using combustion gas
During Ji, pass through gas driven air-conditioning or generating；When night power network is in crest, when electricity price is relatively low, passes through electric power and motor drives
Air-conditioning.It can not only lower user's operating cost, and pair can stablize network load, lower operation of power networks and administration fee.
2. reduce investment of equipment
Existing many central air conditioner users, such as hospital, hotel, megastore, central air conditioner room and generator are all independent
Standard configuration, by the invention it is possible to which saving user buys dynamotor expense, and the construction cost of installation and computer room.
3. energy security, constructed Dual-energy source even multiple-energy-source framework, can reduce energy risk.
In occasions such as hotels of hospital, once having a power failure, gas driven the system can be used, not only can ensure air-conditioning just
Often operation, moreover it is possible to be further the offer power supplies such as illumination；When compressor of air conditioner is run simultaneously with generating electricity, generating electricity to drive
The auxiliary devices such as the water pump of central air conditioner system, blower fan, whole Air Conditioning Facilities are allowed to depart from external electrical network operation.The sky of building
Load is adjusted to typically constitute from more than the 60-70% of building electricity consumption load, once air-conditioning system can be independent of external electrical network, with reference to this hair
Bright generating function, also just meaning whole building can be independent of external electrical network, while in addition to available natural gas, engine
Fuel oil, bio-fuel equal energy source can also be used, can so greatly improve energy strategy security.
3. realize energy classified utilization, efficiency high.
Combustion gas or fuel oil are converted into mechanical energy by high-grade heat energy caused by engine combustion, directly drive compression mechanism
It is cold, substantial amounts of high-temperature residual heat flue gas and cooling water are produced, the recovery of supply absorption installation is freezed again.Can also be further during heating
More low-grade waste heat is reclaimed using cold water, freezed relative to prior art using combustion gas directly to unit is absorbed, or gas-fired boiler
Stove heats, and using energy source is much higher, thus has significant economic benefit and huge social benefit.
4. operation simple in construction is flexible.
Cascaded structure makes simple system, by the simple switching of clutch, can realize plurality of operating modes in systems.
In addition, under the cooperation of speed change gear, the matched well of compressor and a variety of actuating units can be realized, so that
Each equipment can be operated in optimum state, realize economy and the stable operation of whole system.
Embodiment
The present invention is described in further details below with reference to the drawings and specific embodiments：
Fig. 1 is the structural representation of hybrid power compressor；
Fig. 2 is that coupling device connects schematic diagram；
Fig. 3 is the schematic diagram of coupling device separation；
Fig. 4 is hybrid power compressor electronic control system schematic；
Fig. 5 is that the stator winding of electric motor units is in motor or the schematic diagram of generator mode；
Fig. 6 is that the stator of electric motor units is in the schematic diagram of antigravity module control；
Fig. 7 is Bi-motor set into electric motor units schematic diagram；
Fig. 8 is Double-stator motor schematic diagram；
Fig. 9 is that flange shaft joint connects schematic diagram；
Figure 10 is the schematic diagram of flange shaft joint separation；
Figure 11 is state diagram when speed change gear is arranged on prime coupling device；
Figure 12 is state diagram when speed change gear is arranged on rear class coupling device；
Figure 13 is chilled water system structural representation；
Figure 14 is the engine driving compressor mode schematic diagram of hybrid power compressor；
Figure 15 is the motor driven compressor pattern diagram of hybrid power compressor；
Figure 16 is the engine and motor joint driving compressor mode schematic diagram of hybrid power compressor；
Figure 17 is the engine driving compressor synchronous generator schematic diagram of hybrid power compressor；
Figure 18 is the engine driving power generation mode schematic diagram of hybrid power compressor；
Engine described first can use internal combustion engine, gas turbine, the steam turbine of combustion gas or fuel oil, or gas turbine and steam
Turbine combining form, wherein combustion gas most preferably use natural gas.
Embodiment 1：Reference picture 1, in hybrid power compressor, using the suitable of engine 1, electric motor units 2 and compressor 30
Sequence connects, and wherein electric motor units 2 are using double power transmission shafts 201 for stretching output.
Reference picture 2 and the schematic diagram that Fig. 3 is respectively that coupling device 5 is connected and separated.
Engine 1, electric motor units 2, compressor 30 are arranged in series, one end of electric motor units power transmission shaft 201 and compressor
Power transmission shaft 301 is directly connected to by coupling device 42, at the same the other end of electric motor units power transmission shaft 201 by coupling device 41 with
Engine driveshaft 101 is directly connected to.
Electric motor units 2 use a motor, including a rotor 20 and a stator 21, may operate at electric motor mode,
Also it may operate at generator mode.
Reference picture 4, hybrid power compressor electronic control system include engine control module, motor module, electricity generation module,
Antigravity control module, transmission control module and compressor control module.Wherein engine control module is connected with engine 1,
Control its operation.Wherein compressor module control compressor 40 is run, in addition to control compressor load size.
The wherein output end connection motor 3 of motor module, the input connection external power source of motor module.
The input of electricity generation module is connected with generator 2, and the output end of electricity generation module is connected with outside power load.
Reference picture 5, Fig. 6, wherein electric motor units include power transmission shaft 201, rotor 20, stator winding 21, antigravity module bag
Energizing unit and switch unit are included, its output end is connected to the antigravity Exciting Windings for Transverse Differential Protection at the top of electric motor units stator winding
211, its input connection external power source.
Wherein transmission control module is connected with front stage coupling device 41 and 42 respectively, controls it to connect and separate.
Front stage coupling device 41 and 42 uses electric control clutch, including driving disc spacing pressing and clutch plate in the present embodiment, point
Not nested to be fixed on corresponding power transmission shaft, when transmission control module controls clutch adhesive, driving disc spacing pressing and clutch plate are same
Step rotates, and drives two power transmission shaft synchronous axial systems, and vice versa.Driving disc spacing pressing and driven dish structure are completely the same, can exchange.
The power that electric motor units 2 can start as double dynamical machine 1：Before the startup of double dynamical machine 1, electric motor units 2 are allowed to connect
Logical motor module, electric motor units 2 are operated in electric motor mode, drive double dynamical machine 1 to rotate by electric motor units 2；When double acting
After the start completion of power machine 1, electric motor units 2 disconnect with motor module.
Embodiment 3
Reference picture 7, the difference with embodiment 1 are that electric motor units 2 use two coaxial series connection of individual motor, one of electricity
Machine can be used as power the motor of output, and a motor can be as the generator of electric power output.
Embodiment 4
Reference picture 8, the difference with embodiment 1 be, using the motor of 2 stators 21 totally one rotor 20, one of stator
The motor stator of input power can be made, another stator can make the generator unit stator of out-put supply.
Embodiment 5
Reference picture 9 and Figure 10, the difference with embodiment 1 are that prime coupling device 41 and rear class coupling device 42 use nothing
The ring flange shaft joint of transmission control module, including it is 401, two sets of driving disc spacing pressing flexible connection pieces 402, middle linkage section 403, driven
Disk 404, connecting bolt 405 and nut 406.On driving disc spacing pressing 401, flexible connection piece 402, middle linkage section 403 and clutch plate 404
Some through holes are provided with, bolt can be passed through.
Pass through the nut 406 of bolt 405 alternating and driving disc spacing pressing 401 and middle linkage section on wherein a set of flexible connection piece 402
403 fix；Pass through the nut 406 of bolt 405 alternating and clutch plate 404 and middle linkage section 403 on another set of flexible connection piece 402
It is fixed.
When driving disc spacing pressing 401, it is flexibly connected between piece 402, middle linkage section 403 and clutch plate 404 and uses the nut of bolt 405
After 406 are connected, driving disc spacing pressing 401 and the synchronous axial system of clutch plate 404, and drive two power transmission shaft synchronous axial systems；Otherwise remove
The nut 406 of bolt 405, two power transmission shaft separation；The driving disc spacing pressing 401 and structure of clutch plate 404 is just the same to exchange.
Embodiment 6
Difference with embodiment 1 is that prime coupling device 41 uses electric control clutch, and prime coupling device 42 uses ring flange
Shaft joint.
Embodiment 7
Difference with embodiment 1 is that prime coupling device 41 uses ring flange shaft joint, and prime coupling device 42 is using automatically controlled
Clutch.
Embodiment 8
Reference picture 11, the difference with embodiment 1 are, are additionally provided with prime coupling device 41 for rotating speed or turn to conversion
Speed change gear 50, speed change gear 50 are located at the side of double dynamical machine 1 of prime coupling device 41, now electric motor units 2 and compressor
30 rotating speed is consistent.
Embodiment 9
Reference picture 12, the difference with embodiment 1 are, are additionally provided with rear class coupling device 42 for rotating speed or turn to conversion
Speed change gear 50, speed change gear 50 are located at the side of compressor 30 of rear class coupling device 42, now electric motor units 2 and double dynamical machine
1 rotating speed is consistent.
A kind of chilled water system, reference picture 13, including three compressors in parallel, condenser, evaporator, choke valve, cold water
Electric-control system etc., for chilled water.Wherein First and the second compressor use the hybrid power compression in above-described embodiment
Machine 401 and 402, the 3rd compressor use the compressor 403 of single driven by power.
A kind of control method of chilled water system, using foregoing chilled water system, the chilled water system control method, including list
The control method of platform hybrid power compressor 401, hybrid power compressor 401 include engine 1, generator 2, the and of motor 3
Compressor 40, and control hybrid power compressor 401 to operate in following any single cpu mode：
（1）Single cpu mode 1：Compressor is independently driven by engine
Reference picture 14, generator 2 and external circuit are disconnected, optionally connect generator 2 and generator antigravity control module
It is logical；And disconnect motor 3 and external circuit, optionally motor 3 and motor antigravity control module are connected；Operation hair
Motivation 1, compressor 40 is driven to run by engine 1.
（2）Single cpu mode 2：Compressor is operated alone in electric power
Reference picture 15, engine 1, generator 2 do not work；Motor 3 accesses motor module, is powered by external power source, leads to
Crossing motor 3 drives compressor 40 to run.
（3）Single cpu mode 3:Engine combines driving compressor with electric power
Reference picture 16, generator 2 and external circuit are disconnected, optionally connect generator 2 and generator antigravity control module
It is logical；Engine 1 is run, motor 3 accesses motor module, and is connected with external power source, is combined by engine 1 with motor 3
Drive compressor operating；.
（4）Single cpu mode 4:Engine driving compressor and synchronous generator
Reference picture 17, motor 3 and external circuit are disconnected, optionally connect motor 3 and motor antigravity control module
It is logical；Generator 2 accesses electricity generation module, runs engine 1, drives compressor 40 to run by engine 1；And motor-torgue generator
2, convey electric energy to outside power load.
（5）Single cpu mode 5；Single-shot electricity output
Reference picture 18, compressor 40 and motor 1 do not work, and generator 2 accesses electricity generation module；Engine 1 is run, driving generates electricity
Machine, by electricity generation module, electric energy is conveyed to outside power load.
Also including the control methods between three of chilled water system compressions 401,402 and 403, and control three compressors it
Between operate in following any multimachine pattern；
（1）Multimachine pattern 1：
Hybrid power compressor 401 operates in single cpu mode 4；The engine 1 of hybrid power compressor 401 is transported with stabilized (steady-state) speed
OK, the stable 50Hz or 60Hz power supplys of generator output, be conveyed to cold water electric-control system in chilled water system, compressor 403 or
Other outside power loads, such as water pump, room lighting.
Under the pattern, hybrid power compressor 401 also may operate at single cpu mode 5, method with it is upper similar, no longer separately say
It is bright.
（2）Multimachine pattern 2：
Power compressor 401 operates in single cpu mode 4, generates electricity and is only conveyed to compressor 403；Can be by changing hybrid power pressure
The rotating speed of the intrinsic motivation 1 of contracting machine 401, change generating output frequency, so as to control the rotating speed of compressor 403.
Under the pattern, hybrid power compressor 401 also may operate at single cpu mode 5, method with it is upper similar, no longer separately say
It is bright.
（3）Multimachine pattern 3：
Two hybrid power compressors 401 and 402 run single cpu mode 4 simultaneously, and every engine is run with stabilized (steady-state) speed, generate electricity
The stable 50Hz or 60Hz power supplys of machine output, it is common to drive compressor 403, and the cold water electric-control system or outer in chilled water system
Other power loads of portion, such as water pump, room lighting.
Under the pattern, hybrid power compressor 401 and 402 also may operate at single cpu mode 5, and method is with upper similar, no longer
Separately illustrate.
（4）Multimachine pattern 4：
Two hybrid power compressors 401 and 402 run single cpu mode 4 simultaneously, and every engine is run with same rotational speed, sent out
Electricity is conveyed to compressor 403 jointly；The output frequency that generates electricity can be changed by changing the rotating speed of hybrid power compressor intrinsic motivation 1
Rate, so as to control the rotating speed of compressor 403.
Under the pattern, hybrid power compressor 401 and 402 also may operate at single cpu mode 5, and method is with upper similar, no longer
Separately illustrate.
Embodiment 10
Difference with embodiment 1 is a kind of chilled water system, there is a set of independent condenser, evaporator, section per compressor
Valve, cold water electric-control system are flowed, is composed in parallel equivalent to chilled water system by more handpiece Water Chilling Units.Controlling party between multiple compressors
Method also completely as the control mode of above-mentioned single cpu mode and multimachine pattern, no longer separately illustrates.
The preferred embodiments of the present invention are these are only, are not intended to limit the invention, it is clear that those skilled in the art can
To carry out various changes, modification without departing from the spirit and scope of the present invention to the present invention.If these modifications to the present invention
Within the scope of belonging to the claims in the present invention and its equivalent technologies with modification, protection scope of the present invention is belonged to.
Claims (9)
1. a kind of hybrid power compressor, it is characterised in that including engine, electric motor units and compressor；Wherein compressor is adopted
With the opened compressor with overhanging drive shaft；The both ends of the electric motor units are respectively provided with outwardly directed power transmission shaft, including
Stator, rotor and bearing, wherein stator include stator core and stator winding；The power transmission shaft of the engine and electric motor units
After power transmission shaft is directly connected in series, then the transmission axis connection with compressor；
The engine is connected with the overhanging power transmission shaft of the first end of electric motor units by prime coupling device；The of electric motor units
The overhanging power transmission shaft in two ends is connected by rear class coupling device with the power transmission shaft of compressor；The prime coupling device is shaft joint
Or clutch；Rear class attachment means are shaft joint or clutch.
2. hybrid power compressor according to claim 1, it is characterised in that when the motor stator, rotor and transmission
When axle is in horizontally disposed, one or more antigravity excitations are included in the motor stator winding above the rotor
Winding；When the antigravity Exciting Windings for Transverse Differential Protection is passed through electric current, upward bob-weight force direction can be produced to the iron core in rotor
Electromagnetic attraction, the electromagnetic attraction can allow electric motor units power transmission shaft horizontal support bearing or together with engine and compressor power transmission shaft
Horizontal support bearing suffered by radial direction straight down pressure reduce or be zero.
3. hybrid power compressor according to claim 1, it is characterised in that described electric motor units are mechanical, electrical to generate electricity
Motivation, compound motor or group of motors；Compound motor refers to that the electric motor units can use and can as electricity as generator
Motivation uses；Group of motors is to include at least two sub-motor units of series connection.
4. hybrid power compressor according to claim 1, it is characterised in that on prime or the rear class coupling device also
It is provided with for rotating speed or turns to the speed change gear of conversion.
5. hybrid power compressor according to claim 1, it is characterised in that also including hybrid power compressor electronic control system
System, including engine control module, motor control module and compressor control module；
（1）Engine control module is used for the operation for controlling engine；
（2）Motor control module includes at least one of motor module, electricity generation module and antigravity control module；
The motor module is used to control external power source to power for electric motor units, and now electric motor units are operated in motor mould
Formula；
The electricity generation module is used for controlled motor unit and powered to external loading, and now electric motor units are operated in generator mode；
The antigravity control module output end is connected with the lead of antigravity Exciting Windings for Transverse Differential Protection, input connection external power source, bag
Include Energizing unit and switch unit；Wherein the connection of switch unit control antigravity Exciting Windings for Transverse Differential Protection and other stator winding is with dividing
From；Energizing unit is used to control external power source to provide power supply for the antigravity Exciting Windings for Transverse Differential Protection of motor stator, and controls and motor is turned
The direction of sub- electromagnetic attraction and size；When switch unit disconnects, electric motor units are operated in antigravity bearing pattern, Energizing unit
Connect with antigravity Exciting Windings for Transverse Differential Protection, rotated even if rotor is driven by other equipment, lasting bob-weight can be also produced to rotor
The electromagnetic attraction of force direction；When switch unit closes, antigravity Exciting Windings for Transverse Differential Protection is returned to the stator of motor or generator
In winding, electric motor units return to electric motor mode or generator mode；
（3）Compressor control module is used for the operation for controlling compressor；
（4）When coupling device uses electric control clutch, hybrid power compressor electronic control system also includes being used to control clutch
Connection and the transmission control module of separation.
6. hybrid power compressor according to claim 2, it is characterised in that antigravity Exciting Windings for Transverse Differential Protection is determined for electric motor units
The winding being independently arranged in son.
7. a kind of cooling-water machine system, including compressor, condenser, evaporator, choke valve, cooling-water machine electric-control system etc., its feature
It is, the number of units of the compressor is two or more, wherein at least has a compressor to use claim 1-6 such as to appoint
Hybrid power compressor described in one, other compressors can also use hybrid power compressor, or the compressor of single driven by power.
A kind of 8. control method of cooling-water machine system, using the cooling-water machine system described in claim 7, it is characterised in that described
Cooling-water machine system control method, includes the control method of separate unit hybrid power compressor, and controls hybrid power compressor operating
In following any single cpu mode：
Single cpu mode 1：Compressor is independently driven by engine
The prime coupling device and rear class coupling device being also turned between electric motor units and engine and compressor, and by motor
Unit disconnects with external circuit, optionally connects electric motor units and antigravity control module；Motor is in rotor and passively dallied
State, engine is run, by engine driving compressor operating；
Single cpu mode 2：Compressor is operated alone in electric power
The rear class coupling device allowed between electric motor units and compressor is connected, and the prime allowed between electric motor units and double dynamical machine
Coupling device separates, and double dynamical machine does not work；Power module in electric motor units access electric-control system, motor are in motor mould
Formula；Transmitted electricity by external power source and drive compressor by electric motor units；
（3）Single cpu mode 3:Engine combines driving compressor with electric power
The prime coupling device and rear class coupling device being also turned between electric motor units and engine and compressor；Operation is started
Machine, electric motor units access power module, and connected with external power source, motor is in electric motor mode；By engine and motor list
Member joint driving compressor operating；
（4）Single cpu mode 4:Engine driving compressor and synchronous generator
The prime coupling device and rear class coupling device being also turned between electric motor units and engine and compressor；Operation is started
Machine, synchronous driving motor rotor and compressor, motor are in power generation mode, electric motor units access electricity generation module, to outside electricity consumption
Load conveys electric energy；
（5）Single cpu mode 5；Single-shot electricity output
The rear class coupling device allowed between electric motor units and compressor separates, and the preceding cascade allowed between electric motor units and engine
Shaft device is connected, and electric motor units access electricity generation module, motor is in power generation mode；Engine is run, drive motor units, is passed through
Electricity generation module, specially convey electric energy to outside power load.
9. chilled water system control method according to claim 8, it is characterised in that also including the control between multiple compressors
Method processed, and control and operate in following any multimachine pattern between multiple compressors；
（1）Multimachine pattern 1：
When single cpu mode 4 or single cpu mode 5 of any hybrid power compressor operating in chilled water system in the output that can generate electricity,
Engine is run with stabilized (steady-state) speed, the stable 50Hz or 60Hz power supplys of generator output, drives other compressors and cold water system
Cold water electric-control system or other outside power loads in system；
（2）Multimachine pattern 2：
Any hybrid power compressor operating in chilled water system is in single cpu mode 4 or single cpu mode 5, and generating electricity, it is cold to be only conveyed to
Other compressors in water system；Generating output frequency can be changed by changing the rotating speed of hybrid power compressor intrinsic motivation,
So as to control the rotating speed of other compressors；
（3）Multimachine pattern 3：
When the single cpu mode for having two or more hybrid power compressors, all operating in the output that can generate electricity in chilled water system
4 or during single cpu mode 5, every engine is run with stabilized (steady-state) speed, the stable 50Hz or 60Hz power supplys of generator output, common to drive
Move other compressors and the cold water electric-control system in chilled water system or other outside power loads；
（4）Multimachine pattern 4：
When the single cpu mode for having two or more hybrid power compressors, all operating in the output that can generate electricity in chilled water system
4 or during single cpu mode 5, every engine is run with same rotational speed, and generate electricity other compressions being conveyed to jointly in chilled water system
Machine；Generating output frequency can be changed, by changing the rotating speed of hybrid power compressor intrinsic motivation so as to control other compressors
Rotating speed.
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| CN201711415648.5A CN107882706A (en) | 2017-12-25 | 2017-12-25 | A kind of hybrid power compressor and chilled water system and chilled water system control method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117128581A (en) * | 2023-07-27 | 2023-11-28 | 浙江国祥股份有限公司 | Evaporation condensation variable frequency magnetic suspension multi-connected unit |
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| CN202792668U (en) * | 2012-09-17 | 2013-03-13 | 苏州必信空调有限公司 | Water chilling unit |
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| CN2768289Y (en) * | 2004-10-10 | 2006-03-29 | 广州三业科技有限公司 | Multifunctional internal combustion power generator set |
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