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CN105841374A - Cooling system - Google Patents

Cooling system Download PDF

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Publication number
CN105841374A
CN105841374A CN201510016321.5A CN201510016321A CN105841374A CN 105841374 A CN105841374 A CN 105841374A CN 201510016321 A CN201510016321 A CN 201510016321A CN 105841374 A CN105841374 A CN 105841374A
Authority
CN
China
Prior art keywords
mentioned
refrigerating module
module
refrigerating
cooling
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201510016321.5A
Other languages
Chinese (zh)
Other versions
CN105841374B (en
Inventor
朴韩荣
黃允济
李虎林
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LG Electronics Inc
Original Assignee
LG Electronics Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LG Electronics Inc filed Critical LG Electronics Inc
Publication of CN105841374A publication Critical patent/CN105841374A/en
Application granted granted Critical
Publication of CN105841374B publication Critical patent/CN105841374B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B7/00Compression machines, plants or systems, with cascade operation, i.e. with two or more circuits, the heat from the condenser of one circuit being absorbed by the evaporator of the next circuit
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00Arrangement or mounting of control or safety devices
    • F25B49/02Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2339/00Details of evaporators; Details of condensers
    • F25B2339/04Details of condensers
    • F25B2339/047Water-cooled condensers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/06Several compression cycles arranged in parallel
    • F25B2400/061Several compression cycles arranged in parallel the capacity of the first system being different from the second
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/13Economisers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B25/00Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00
    • F25B25/005Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00 using primary and secondary systems
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2500/00Problems to be solved
    • F25B2500/19Calculation of parameters
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00Sensing or detecting of parameters; Sensors therefor
    • F25B2700/05Load shedding of a compressor
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21Temperatures
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21Temperatures
    • F25B2700/2116Temperatures of a condenser
    • F25B2700/21161Temperatures of a condenser of the fluid heated by the condenser
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21Temperatures
    • F25B2700/2117Temperatures of an evaporator
    • F25B2700/21171Temperatures of an evaporator of the fluid cooled by the evaporator
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00Fluid-circulation arrangements
    • F25B41/30Expansion means; Dispositions thereof
    • F25B41/39Dispositions with two or more expansion means arranged in series, i.e. multi-stage expansion, on a refrigerant line leading to the same evaporator

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Other Air-Conditioning Systems (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention relates to a cooling system. The cooling system comprises a plurality of cooling modules. Each cooling module comprises a compressor, a condenser, and an evaporator. The cooling system also comprises a controller for controlling the plurality of cooling modules. The controller can determine the estimated load, according to the estimated load, the number of required cooling modules can be determined, and then the required cooling modules are started.

Description

Cooling system
Technical field
The present invention relates to cooling system.
Background technology
In general, cooler is for supplying cold water at cold water demand, it is characterised in that by making The cold-producing medium circulated in refrigeration system and the cold water circulated at cold water demand and between refrigeration system Between carry out heat exchange to cool down above-mentioned cold water.Cooler is large capacity equipment, may be disposed at large-scale building Build thing etc..
Summary of the invention
The present embodiment provides cooling system.
The cooling system of one scheme, including: multiple refrigerating modules, include compressor, condenser respectively And vaporizer, controller, it is used for controlling above-mentioned multiple refrigerating module;Controller noted above determines anticipated negative Carry, determine the cooling mould needing to run in multiple refrigerating module according to the anticipated duty determined Block, and make determined refrigerating module run.
The cooling system of another program, including the first refrigerating module, has first compressor, and second Refrigerating module, capacity is more than the capacity of above-mentioned first refrigerating module, and has the second compressor, control Device processed, is used for controlling above-mentioned first refrigerating module and above-mentioned second refrigerating module;Controller noted above is being sentenced When breaking as have input operation sign on, determine in above-mentioned first refrigerating module and the second refrigerating module Need the refrigerating module run, and make determined refrigerating module bring into operation.
The cooling system of another aspect, including the first refrigerating module, has first compressor, and second Refrigerating module, capacity is more than the capacity of above-mentioned first refrigerating module, and has the second compressor, control Device processed, is controlled above-mentioned first refrigerating module and above-mentioned second refrigerating module;Controller noted above exists In above-mentioned first refrigerating module and the second refrigerating module, more than one is judged as needs during running During change operation method, make run refrigerating module stop and making another refrigerating module run, or, A certain refrigerating module is made to stop during all refrigerating modules run, or at 1 refrigerating module But module makes to remain refrigerating module and adds operation during running.
About concrete more embodiments, will the most in conjunction with the accompanying drawings.Other features will be Following description and drawings and claim are embodied.
Accompanying drawing explanation
Fig. 1 is the figure of the structure of the cooling system illustrating an embodiment.
Fig. 2 is the system diagram of the structure of the refrigerating module illustrating an embodiment.
Fig. 3 is the concept map of the refrigerating module of Fig. 2.
Fig. 4 is the axonometric chart of the cooling assembly illustrating an embodiment.
Fig. 5 is the flow chart of the control method during initial launch of the cooling assembly that an embodiment is described.
Cooling assembly corresponding with load change when being the cooling assembly operating that an embodiment is described for Fig. 6 The flow chart of control method.
Fig. 7 is the figure of the number control benchmark of the refrigerating module being illustrated based on aspiration rates and load factor formulation Table.
Detailed description of the invention
Below, embodiments of the present invention are illustrated in conjunction with accompanying drawing.
The embodiment illustrated below in conjunction with the accompanying drawings is for illustrating the excellent of the realization of the present invention Select embodiment.These embodiments obtain abundant specific description, so that those skilled in the art Member can implement the present invention, and is interpreted as in the range of without departing from the thought of the present invention, can lead to Cross logical structure, machinery, electronics, chemical change are capable of other embodiment.To the present invention Those skilled in the art implement the unwanted detailed description of the present invention and have given omitting, and for The information of the determination of dawn known to a person skilled in the art has given omitting in the description.Therefore, under Illustrating of face is not determinate.
Certainly, in the description of detailed description of the invention part, first, second, A, B, (a), B () and other similar vocabulary are used for describing the assembly of the present invention.These terms are not used to fixed The justice essence of associated component, order or step, but for difference by associated component and other assembly districts Do not come.In explanation, arrive if a certain assembly is described as " being connected ", " coupling " or " combination " On other assemblies, the former be probably directly " be connected ", on " coupling " and " combination " to the latter, Or " it is connected " by other assemblies, on " coupling " and " combination " to the latter.
Fig. 1 is the figure of the structure of the cooling system illustrating an embodiment, and Fig. 2 illustrates an embodiment The system diagram of the structure of refrigerating module, Fig. 3 is the concept map of the refrigerating module of Fig. 2.
With reference to Fig. 1~Fig. 3, the cooling system 10 of an embodiment comprises the steps that refrigerating module 100, shape Become to have freeze cycle;Cooling tower 20, to above-mentioned refrigerating module 100 supply cooling water;And cold water At demand 30, carry out the cold water of heat exchange at this cold water demand in 30 with above-mentioned refrigerating module 100 Circulation.
Can be interpreted as at above-mentioned cold water demand 30 for utilize cold water perform air regulation device or Space.
Cooling water circulation stream 40 it is configured with between above-mentioned refrigerating module 100 and cooling tower 20.On Stating cooling water circulation stream 40 is at above-mentioned cooling tower 20 and refrigerating module 100 for guide cooling water Condenser 120 between circulation pipe arrangement.
Above-mentioned cooling water circulation stream 40 comprises the steps that cooling water enters current road 42, guide cooling water stream Enter above-mentioned condenser 120;Cooling water water outlet stream 44, guides heated at above-mentioned condenser 120 The cooling above-mentioned cooling tower of current direction 20.
Can be at least one stream during above-mentioned cooling water enters current road 42 and cooling water water outlet stream 44 On be configured to make the cooling water pump 46 of flow of cooling water.As an example, figure 1 illustrates Above-mentioned cooling water enters configuration on current road 42 and is described the situation of cooling water pump 46.
Above-mentioned cooling water water outlet stream 44 is configured with for detecting the cold of the above-mentioned cooling tower 20 of inflow But the cooling water leaving water temperature sensors 47 of the temperature of water.Additionally, enter current road at above-mentioned cooling water It is configured with on 42 and enters water for detection from the cooling water of the temperature of the prominent cooling water of above-mentioned cooling tower 20 Temperature sensor 48.
It is configured with circulating chilled water stream 50 between 30 at above-mentioned refrigerating module 100 and cold water demand. Above-mentioned circulating chilled water stream 50 is for guiding cold water at above-mentioned cold water demand 30 and refrigerating module The pipe arrangement of circulation between the vaporizer 140 of 100.
Above-mentioned circulating chilled water stream 50 comprises the steps that cold water enters current road 52, guides cold water to flow into above-mentioned Vaporizer 140;Cold water water outlet stream 54, guide cold water cooled in above-mentioned vaporizer 140 to At above-mentioned cold water demand, 30 flow.
Can join at least one stream during above-mentioned cold water enters current road 52 and cold water water outlet stream 54 Put the water supply pump 56 of flowing for making cold water.As an example, figure 1 illustrates above-mentioned cold Water enters the situation being configured with above-mentioned water supply pump 56 on current road 52.
Enter to be configured with on current road 52 for detecting the above-mentioned refrigerating module 100 of inflow at above-mentioned cold water The cold water of the temperature of cold water enters water temperature sensor 53, is configured with use at above-mentioned cold water water outlet stream 54 In detection from the Cold water-out temperature sensor 55 of the temperature of the cold water of above-mentioned refrigerating module 100 discharge.
As another example, above-mentioned cold water enters water temperature sensor 53 and above-mentioned Cold water-out temperature sensing Device 55 is configurable in above-mentioned refrigerating module 100.
At above-mentioned cold water demand, 30 can be the Water-cooling type air conditioner making air and cold water carry out heat exchange Machine.
As an example, at above-mentioned cold water demand, 30 can include at least one in three below unit Unit, these three unit is: air conditioner unit (AHU, Air Handling Unit), by room After interior air and outdoor air mixing, mixing air and cold water is made to carry out heat exchange by after heat exchange Mixing air is discharged to indoor;Pressure fan coil pipe unit (FCU, Fan Coil Unit), is arranged at Indoor, make room air and cold water carry out heat exchange and the room air after heat exchange are discharged to room In;Ground pipe arrangement unit, is embedded in flooring.
Figure 1 illustrates at above-mentioned cold water demand 30 is the ion of air conditioner unit.
Specifically, above-mentioned air conditioner unit comprises the steps that shell 61;Chilled water coil 62, is located at The inside of above-mentioned shell 61, is used for making cold water pass through;Pressure fan 63,64, is located at above-mentioned cold water tray The both sides of pipe 62, are used for sucking room air and outdoor air to be blown into indoor.
Above-mentioned pressure fan 63,64 comprises the steps that the first pressure fan 63, for by room air and outdoor Air is drawn into the inside of above-mentioned shell 61;Second pressure fan 64, for being discharged to regulation air The outside of above-mentioned shell 61.
Room air sucting 65, room air discharge portion 66, outside it is formed with on above-mentioned shell 61 Air sucting 67 and regulation air discharge portion 68.
When driving above-mentioned pressure fan 63,64, it is drawn into above-mentioned room air sucting 65 from indoor Air in a part be discharged to room air discharge portion 66, be not discharged to above-mentioned Interior Space The remaining air in gas discharge portion 66 mixes mutually with the air being drawn into said external air sucting 67 Heat exchange is carried out afterwards with chilled water coil 62.
Additionally, the mixing air having carried out heat exchange (cooling) with above-mentioned chilled water coil 62 also can lead to Cross above-mentioned regulation air discharge portion 68 and be discharged to indoor.
Above-mentioned refrigerating module 100 comprises the steps that compressor 110, is used for compressing cold-producing medium;Condenser 120, The cold-producing medium of the High Temperature High Pressure compressed in above-mentioned compressor 110 is flowed into this condenser 120;Swollen Swollen device 131,132, is reduced pressure by condensing cold-producing medium in above-mentioned condenser 120;Steam Vaporizer 140, makes the cold-producing medium evaporation being depressurized in above-mentioned expansion gear 131,132.
Above-mentioned expansion gear 131,132 comprises the steps that the first expansion gear 131, makes from above-mentioned condensation The cold-producing medium that device 120 is discharged expands for the first time;Second expansion gear 132, makes from economizer 150 (Economizer) in, isolated cold-producing medium second time expands.
Above-mentioned refrigerating module 100 may also include that suction pipe arrangement 101, is located at above-mentioned compressor 110 Entrance side, guides the refrigerant flow direction above-mentioned compressor 110 discharged from above-mentioned vaporizer 140;Discharge Pipe arrangement 102, is located at the outlet side of above-mentioned compressor 110, guides from above-mentioned compressor 110 discharge The above-mentioned condenser of refrigerant flow direction 120.
Deposit additionally, can be configured with between above-mentioned vaporizer 140 and above-mentioned compressor 110 for guiding It is that the oil within above-mentioned vaporizer 140 flows to the recovery of oil pipe arrangement of the suction side of above-mentioned compressor 110 108。
Above-mentioned compressor 110 can include the impeller 111 (impeller) for compressing cold-producing medium.This Outward, above-mentioned compressor 110 can include the motor 112 for driving above-mentioned impeller 111.On additionally, State compressor 110 can include for the driving force of said motor 112 is transferred to above-mentioned impeller 111 The more than one gear of side.
Additionally, above-mentioned compressor 110 can include the cold-producing medium being flowed in impeller 111 for regulation Flow and the guide vane 114 of flow of cold-producing medium discharged from impeller 111.That is, above-mentioned water conservancy diversion The aperture in the path of blade 114 scalable cold-producing medium flowing, can regulate cold-producing medium by regulation aperture Flow.As an example, when the aperture of above-mentioned guide vane 114 increases, refrigerant flow increases, When aperture reduces, refrigerant flow reduces.
Above-mentioned condenser 120 and vaporizer 140 can make cold-producing medium and water carry out heat exchange Shell-and-tube (shell and tube) heat-exchange device.
Specifically, above-mentioned condenser 120 comprises the steps that housing 121, forms outward appearance;Cold-producing medium stream Entrance 122, is formed at the side of above-mentioned housing 121, is used for making to be pressed in above-mentioned compressor 110 The cold-producing medium of contracting flows into;Refrigerant outflow port 123, is located at the opposite side of above-mentioned housing 121, is used for Make to be flowed out by condensing cold-producing medium in above-mentioned condenser 120.
Additionally, above-mentioned condenser 120 may also include that cooling water row tube 124, it is located at above-mentioned housing 121 Inside, for the flowing of guide cooling water;Cooling water inflow part 125, is located at above-mentioned housing 121 Side, end, guide cooling water flow into above-mentioned cooling water row tube 124;Cooling water flow out of portion 126, Being located at the end opposite side of above-mentioned housing 121, guide cooling water flows out from above-mentioned cooling water row tube 124. Go out.
Above-mentioned cooling water inflow part 125 enters current road 42 with above-mentioned cooling water and is connected, above-mentioned cooling water Outflow portion 126 is connected with above-mentioned cooling water water outlet stream 44.
It is provided with economizer 150 in the refrigerant outlet side of above-mentioned condenser 120.Additionally, at above-mentioned joint The entrance side of hot device 150 is provided with above-mentioned first expansion gear 131.Above-mentioned condenser 120 is coagulated The cold-producing medium of contracting flows into above-mentioned economizer after being reduced pressure for the first time in above-mentioned first expansion gear 131 150。
Above-mentioned economizer 150 can isolate liquid phase refrigerant in the cold-producing medium reduced pressure for the first time And vapor phase refrigerant.The vapor phase refrigerant separated flows into above-mentioned compressor 110, the liquid phase separated Cold-producing medium flows in above-mentioned second expansion gear 132 and can be reduced pressure for the second time.
Above-mentioned vaporizer 140 comprises the steps that housing 141, forms outward appearance;Refrigerant inflow port 142, It is formed at the side of above-mentioned housing 141, makes refrigeration inflated in above-mentioned second expansion gear 132 Agent flows into;Refrigerant outflow port 143, is located at the opposite side of above-mentioned housing 141, makes in above-mentioned evaporation The cold-producing medium evaporated in device 140 flows out.Above-mentioned refrigerant outflow port 143 can be with above-mentioned suction pipe arrangement 101 are connected.
Above-mentioned vaporizer 140 may also include that cold water pipe tubulation 144, is located at the interior of above-mentioned housing 141 Portion, for guiding the flowing of cold water;Cold water inflow part 145, is located at the end one of above-mentioned housing 141 Side, guides cold water to flow into above-mentioned cold water pipe tubulation 144;Cold water outflow portion 146, is located at above-mentioned housing The end opposite side of 141, guides cold water to flow out from above-mentioned cold water pipe tubulation 144.
Above-mentioned cold water inflow part 145 enters current road 52 with above-mentioned cold water and is connected, above-mentioned cold water outflow portion 146 are connected with above-mentioned cold water water outlet stream 54.
Fig. 4 is the axonometric chart of the cooling assembly illustrating an embodiment.
With reference to Fig. 4, the cooling assembly of an embodiment can include multiple refrigerating module 201,202.Multiple Refrigerating module 201,202 can be connected in series or in parallel.
An example of the situation of module 201,202 it is connected in parallel shown in Fig. 4.
Above-mentioned multiple refrigerating module 201,202 can include the first refrigerating module 201 and the second cooling mould Block 202.Here, the first refrigerating module 201 and the second refrigerating module 202 have with at Fig. 2 and Tu The structure that in 3, the refrigerating module of explanation is identical.Additionally, the first refrigerating module 201 and the second cooling mould Block 202 can have identical capacity and size, it is possible to have different capacity and size.
Below, the capacity of above-mentioned first refrigerating module 201 and above-mentioned second refrigerating module 202 are described Capacity different, and the capacity of above-mentioned second refrigerating module 202 is more than above-mentioned first refrigerating module The situation of the capacity of 201.
Above-mentioned first refrigerating module 201 can include first compressor the 210, first condenser 220 and Two vaporizers 240, above-mentioned second refrigerating module 202 can include that the second compressor 212, second condenses Device 222 and the second vaporizer 242.
Additionally, above-mentioned cooling assembly may also include that cooling water connecting pipe for water 260, it is used for being connected above-mentioned One condenser 220 and above-mentioned second condenser 222;And cold water connecting tube 250, for connecting mutually State the first vaporizer 240 and above-mentioned second vaporizer 242.
Here, above-mentioned cold water connecting tube 250 performs to arrange the cold water pipe having passed through the first vaporizer 240 The cold water of pipe is sent to the function of the second vaporizer 242 side.Specifically, the first vaporizer has been passed through The cold water of the cold water pipe tubulation of 240, after cold water connecting tube 250 is collaborated, is diverted to the second vaporizer The cold water pipe tubulation of 242.
Additionally, above-mentioned cooling water connecting pipe for water 260 performs the cooling water by having passed through the first condenser 220 The cooling water of tubulation is sent to the function of the second condenser 222 side.Specifically, first has been passed through cold The cooling water of the cooling water row tube of condenser 220, after cooling water connecting pipe for water 260 confluxes, is diverted to the The cooling water row tube of two condensers 222.
Now, above-mentioned first compressor the 210, first vaporizer 240 and the first condenser 220 configure Become in the state of stacking in the vertical direction in face that arranges of above-mentioned first refrigerating module 201, above-mentioned second Compressor the 212, second vaporizer 242 and the second condenser 222 are configured to cool down mould above-mentioned second Block 200 the state of stacking in the vertical direction in face is set.
Certainly, according to the type of cooling assembly, above-mentioned cold water connecting tube 250 can be omitted and cooling water connects Adapter 260.
Above-mentioned cooling assembly could be included for controlling the control of above-mentioned each refrigerating module 201,202 Device 270.Above-mentioned control panel 270 can perform the function for inputting various control instruction and be used for The function of the status information of display refrigerating module (201,202).
Controller noted above 270 can include the memorizer 272 for preserving various information.
Below, the method being used for controlling to cool down assembly of the present embodiment is described.
Fig. 5 is the flow chart of the control method during initial launch of the cooling assembly that an embodiment is described, Cooling assembly corresponding with load change when being the cooling assembly operating that an embodiment is described for Fig. 6 The flow chart of control method, Fig. 7 be illustrated based on refrigerating module that aspiration rates and load factor formulate The chart of numerical control benchmark.
First, with reference to Fig. 1, Fig. 5 and Fig. 7, if inputting the operation sign on of above-mentioned cooling system, Then bring into operation cooling system (S1).That is, cooling assembly brings into operation.
If above-mentioned cooling assembly brings into operation, then controller noted above 270 determines anticipated duty (S2). Additionally, determine to need the refrigerating module (or compressor) run according to the anticipated duty determined (S3)。
Can estimate that aspiration rates determines above-mentioned anticipated duty according to the first anticipated duty rate and first.
Specifically, can be current cold according to entered that water temperature sensor 53 detects by above-mentioned cold water Water enters coolant-temperature gage and the target Cold water-out temperature being saved in above-mentioned memorizer 272 is above-mentioned to determine First anticipated duty rate.
As an example, above-mentioned first anticipated duty rate can be determined according to following mathematical expression 1.
Mathematical expression 1
Now, the constant during cold water rated temperature difference is stored in above-mentioned memorizer 272.
Water can be entered according to being entered, by above-mentioned cooling water, the current cooling water that water temperature sensor 48 detects Temperature and target Cold water-out temperature determine that above-mentioned first estimates aspiration rates.
As an example, can determine that above-mentioned first estimates aspiration rates according to following mathematical expression 2.
Mathematical expression 2
Now, above-mentioned cooling water rated temperature is poor, above-mentioned specified cooling water leaving water temperature and above-mentioned volume Determine the constant that Cold water-out temperature is stored in above-mentioned memorizer 272.
Controller noted above 270 is by estimating aspiration rates to determined first anticipated duty rate and first Compare with the information being saved in above-mentioned memorizer 272, determine anticipated duty.
With reference to Fig. 7, preserve in above-mentioned memorizer 272 for determining and cooling down the initial of assembly Aspiration rates during operation and three scopes of the corresponding anticipated duty of load factor.
In the figure 7, on the basis of two dotted lines, the left field of left-hand broken line is the first initial range, Region between two dotted lines is the second initial range, and the right side area of the dotted line on right side is the 3rd initial Scope.
Now, left-hand broken line is that the second refrigerating module runs datum line, and the dotted line on right side is the first cooling Module and the second refrigerating module run datum line simultaneously.
In above-mentioned first anticipated duty rate and first, controller noted above 270 estimates that aspiration rates is above-mentioned Time in the range of one, it is determined as above-mentioned first refrigerating module 201 running module.
In above-mentioned first anticipated duty rate and first, controller noted above 270 estimates that aspiration rates is above-mentioned Time in the range of two, it is determined as above-mentioned second refrigerating module 202 running module.
In above-mentioned first anticipated duty rate and first, controller noted above 270 estimates that aspiration rates is above-mentioned Time in the range of three, it is determined as above-mentioned first refrigerating module 201 and the second refrigerating module 202 running mould Block.
Additionally, controller noted above 270 makes determined refrigerating module (or compressor) run (S4).
Then, with reference to Fig. 6 and Fig. 7, as an example, if being determined as making 1 refrigerating module run, 1 refrigerating module (or compressor) is then made to run (S11).
During 1 refrigerating module runs, controller noted above 270 judges whether to need change fortune Row method (S12).
Now, in order to prevent refrigerating module from the most frequently opening (ON)/close (OFF) with load change, After 1 refrigerating module brings into operation after a predetermined time, controller noted above 270 judgement it is No needs changes operation method.Although not limiting, but an example of above-mentioned certain time can be 1 Individual hour, can environment be set or position is set changes above-mentioned certain time according to cooling system.
When judged result in step s 12 is for needs change operation method, controller noted above 270 Determine to need the refrigerating module (or compressor) (S13) run.Then, making to be determined as need to Refrigerating module (or compressor) to be run brings into operation (S14).
Specifically, according to the second anticipated duty rate and second, controller noted above 270 estimates that aspiration rates is come Determine anticipated duty, decide whether to change operation method according to the anticipated duty determined.
Change operation method in the present embodiment includes the refrigerating module method of change operation, 1 Platform refrigerating module adds the method for 1 refrigerating module of running, at 2 refrigerating modules during running During operation stop 1 refrigerating module method, etc..
Above-mentioned second can be determined according to the difference of current Cold water-out temperature and target Cold water-out temperature One example of anticipated duty rate.
Now, in the case of current Cold water-out temperature is higher than target Cold water-out temperature, second is pre- Meter load factor becomes big, in the case of current Cold water-out temperature is less than target Cold water-out temperature, the Two anticipated duty rates diminish.
Coolant-temperature gage can be entered according to current cooling water and target cold water outlet temperature determines above-mentioned second pre- Meter aspiration rates.Or, can determine that above-mentioned second estimates to take out according to the difference of condensing pressure and evaporating pressure Suction rate.
With reference to Fig. 7, in above-mentioned memorizer 272, storage has for based on when cooling down assembly operating Aspiration rates and load factor determine 5 scopes of anticipated duty.
In the figure 7, it is the first range of operation that the first load reduces the left field of datum line, and first is negative It is the second range of operation that lotus reduces region between datum line and the first load increase datum line, the first load Increasing region between datum line and the second load minimizing datum line is the 3rd range of operation, and the second load subtracts It is the 4th range of operation that few datum line and the second load increase region between datum line, and the second load increases The right side area of datum line is the 5th range of operation.
As an example, during above-mentioned first refrigerating module 201 runs, estimate above-mentioned second Load factor and above-mentioned second estimates that aspiration rates is positioned at above-mentioned first range of operation or above-mentioned second and runs During scope interior, controller noted above 270 is judged as need not changing operation method.That is, due to can profit Load is tackled, so need not change operation method with the capacity of above-mentioned first refrigerating module 201.
Additionally, during above-mentioned first refrigerating module 201 runs, at above-mentioned second anticipated duty Rate and above-mentioned second is estimated when aspiration rates is positioned at above-mentioned three range of operation, controller noted above 270 It is judged as needing to change operation method.That is, owing to the capacity of above-mentioned first refrigerating module can not be utilized Reply load, so needing to change operation method.
Therefore, controller noted above 270 makes second bigger than the capacity of the first refrigerating module 201 cool down Module 202 is run, and makes above-mentioned first refrigerating module 201 stop.
Specifically, controller noted above 270 above-mentioned first refrigerating module 201 run during, Perform the set up procedure of above-mentioned second refrigerating module 202.The starting step of above-mentioned second refrigerating module 202 Suddenly comprise the steps that oil circulation step, make oil at the second compressor 212 of above-mentioned second refrigerating module 202 Interior circulation;Guide vane operating procedure, makes the aperture of the guide vane of above-mentioned second compressor 212 increase Add.
Controller noted above 270, after the set up procedure of above-mentioned second refrigerating module 202 terminates, performs to make The stopping step that above-mentioned first refrigerating module 201 stops, making above-mentioned after performing above-mentioned stopping step First refrigerating module 201 stops.It is of course also possible to make in the case of not performing above-mentioned stopping step Above-mentioned first refrigerating module 201 stops.
On the other hand, during above-mentioned second refrigerating module 202 runs, estimate above-mentioned second Load factor and above-mentioned second is estimated when aspiration rates is positioned at above-mentioned four range of operation, controller noted above 270 are judged as needing to change operation method.That is, owing to the appearance of above-mentioned second refrigerating module can be utilized Amount tackles load, so needing to change operation method.
Above-mentioned second anticipated duty rate and above-mentioned during above-mentioned second refrigerating module 202 runs In the case of second estimates that aspiration rates is positioned at above-mentioned 5th range of operation, controller noted above 270 judges Operation method is changed for needs.That is, owing to the capacity of above-mentioned second refrigerating module 202 can not be utilized Reply load, so needing to change operation method.
Therefore, controller noted above 270 makes above-mentioned during above-mentioned second refrigerating module 202 runs First refrigerating module 201 adds and runs.
On the other hand, together transport at above-mentioned first refrigerating module 201 and above-mentioned second refrigerating module 202 During row, above-mentioned second anticipated duty rate and above-mentioned second estimates that aspiration rates is positioned at above-mentioned 4th fortune Time in line range, controller noted above 270 is judged as needing to change operation method.That is, due to can profit Load is tackled, so needing to change operation method with the capacity of above-mentioned second refrigerating module 202.Cause This, controller noted above 270 can make above-mentioned first refrigerating module 201 stop.
Above-mentioned second refrigerating module 202 run during, above-mentioned second anticipated duty rate and on Stating second and estimate when aspiration rates is positioned at above-mentioned second range of operation, controller noted above 270 is judged as needing Operation method to be changed.That is, negative owing to the capacity of above-mentioned first refrigerating module 201 can be utilized to tackle Lotus, so needing to change operation method.Therefore, controller noted above 270 can make above-mentioned second cooling mould Block 202 stops, and makes above-mentioned first refrigerating module 201 run.
If determining to be changed to operation object during above-mentioned second refrigerating module 202 runs State the first refrigerating module 201, then can reduce the second compressor 212 of above-mentioned second refrigerating module 202 The aperture of guide vane.If additionally, the aperture of the guide vane of above-mentioned second compressor 212 reaches Reference opening amount, then perform the set up procedure of above-mentioned first refrigerating module 201.Above-mentioned first refrigerating module The set up procedure of 201 is identical with the set up procedure of the second refrigerating module 201 described above.
If the set up procedure of above-mentioned first refrigerating module 201 terminates, the most above-mentioned first refrigerating module 201 Properly functioning, after performing the stopping step of above-mentioned second refrigerating module 202, above-mentioned second cold But module 202 stops.It is of course also possible in the case of not performing above-mentioned stopping step, make above-mentioned Second refrigerating module 202 stops.
According to the present embodiment, utilize multiple refrigerating modules of different capabilities to carry out unit number control, so The advantage that existence can successfully manage load.
Additionally, in the present embodiment, it is contemplated that operation method change judgment standard when load increases is with pre- Operation method change judgment standard when meter load reduces is different.This is the frequency in order to prevent refrigerating module Numerous open (ON)/close (OFF).
Such as, fortune when operation method judgment standard when anticipated duty reduces and anticipated duty increase When row method judgment standard is identical, i.e. in the figure 7, if the first load reduces datum line and second negative Lotus increase datum line be same line, then the second anticipated duty rate and second estimate aspiration rates with benchmark When the position that line is adjacent is frequently changed, may frequently form the first refrigerating module stopping, the second cooling mould Process and the second refrigerating module that block starts stop, the process of the first refrigerating module starting, now, and consumption Electricity increases, it may occur however that the problem that can not stably tackle load.
But, in case of the present embodiment, load increase time operation method change judgment standard and Operation method change judgment standard when load reduces is different, therefore, it is possible to prevent the frequent of refrigerating module Open (ON)/close (OFF), therefore there is the advantage that power consumption reduces, can stably tackle load.
In the above-described embodiments, illustrate that two refrigerating modules constitute 1 cooling assembly, but with this not With ground, in the case of be made up of 1 cooling assembly the refrigerating module of more than three, it is also possible to same It is suitable for the thought of the present invention.
Although illustrate embodiment by multiple specific embodiments, it should be understood that those skilled in the art Member can make other many variations and embodiment, and these fall within the essence of technology of this specification In god and spirit.More specifically, it is possible to various to its assembly and/or body assembly layout Change and improvement fall in the range of time specification, drawings and the claims.Further, to its assembly and / or the different use of the various changes of layout and improvement be aobvious for a person skilled in the art Right.

Claims (20)

1. a cooling system, it is characterised in that
Including:
Multiple refrigerating modules, include compressor, condenser and vaporizer respectively,
Controller, is used for controlling above-mentioned multiple refrigerating module;
Controller noted above determines anticipated duty, determines multiple cooling according to the anticipated duty determined The refrigerating module needing to run in module, and make determined refrigerating module run.
Cooling system the most according to claim 1, it is characterised in that
Above-mentioned multiple refrigerating module is the cooling system that capacity is mutually different.
Cooling system the most according to claim 1, it is characterised in that
Controller noted above, according to above-mentioned anticipated duty, makes the part in multiple refrigerating module or complete Portion runs.
Cooling system the most according to claim 1, it is characterised in that
Controller noted above load factor on the estimation and anticipated aspiration rates determine above-mentioned anticipated duty;
According to flowing into the temperature of cold water and the target cold water outlet temperature of above-mentioned vaporizer, determine on State anticipated duty rate;
The temperature of the cooling water according to the above-mentioned condenser of inflow and target Cold water-out temperature, determine Above-mentioned anticipated aspiration rates.
Cooling system the most according to claim 1, it is characterised in that
Above-mentioned multiple refrigerating module includes the first refrigerating module and the second refrigerating module, above-mentioned second cold But the capacity of module is more than the capacity of above-mentioned first refrigerating module;
A certain module in above-mentioned first refrigerating module and the second refrigerating module is sentenced during running When breaking as needs change operation method, controller noted above makes operating refrigerating module stop, and makes Another refrigerating module runs, or, make above-mentioned first refrigerating module and above-mentioned second refrigerating module same Shi Yunhang.
Cooling system the most according to claim 5, it is characterised in that
Controller noted above judges anticipated duty, and load judges whether to need change to run on the estimation.
Cooling system the most according to claim 6, it is characterised in that
Judgment standard for judging whether needs change operation includes judgement when anticipated duty increases Judgment standard when benchmark and anticipated duty reduce.
Cooling system the most according to claim 6, it is characterised in that
Controller noted above load factor on the estimation and anticipated aspiration rates judge above-mentioned anticipated duty;
Temperature according to the cold water discharged from above-mentioned vaporizer and target cold water outlet temperature, determine Above-mentioned anticipated duty rate;
The temperature of the cooling water according to the above-mentioned condenser of inflow and target Cold water-out temperature, determine Above-mentioned anticipated aspiration rates.
Cooling system the most according to claim 5, it is characterised in that
During above-mentioned first refrigerating module runs, it is determined as being changed to operation object above-mentioned the During two refrigerating modules,
Controller noted above performs the set up procedure of above-mentioned second refrigerating module, and cools down above-mentioned second After the set up procedure of module terminates, the operation of above-mentioned first refrigerating module is made to stop.
Cooling system the most according to claim 5, it is characterised in that
Determine operation object is changed to above-mentioned first during above-mentioned second refrigerating module runs During refrigerating module,
Controller noted above reduces the aperture of the guide vane of above-mentioned second compressor, and at above-mentioned water conservancy diversion When the aperture of blade arrives reference opening amount, perform the set up procedure of above-mentioned first refrigerating module.
11. cooling systems according to claim 10, it is characterised in that
Controller noted above, after the set up procedure of above-mentioned first refrigerating module terminates, makes above-mentioned second The operation of refrigerating module stops.
12. 1 kinds of cooling systems, it is characterised in that
Including:
First refrigerating module, has the first compressor,
Second refrigerating module, capacity is more than the capacity of above-mentioned first refrigerating module, and has second Compressor,
Controller, is used for controlling above-mentioned first refrigerating module and above-mentioned second refrigerating module;
Controller noted above is when being judged as have input operation sign on, at above-mentioned first refrigerating module Need the refrigerating module of operation with decision in the second refrigerating module, and make determined refrigerating module open Begin to run.
13. cooling systems according to claim 12, it is characterised in that
A certain module in above-mentioned first refrigerating module and the second refrigerating module is sentenced during running When breaking as needs change operation method,
Controller noted above makes operating refrigerating module stop and making another refrigerating module run, or Make above-mentioned first refrigerating module and above-mentioned second refrigerating module run simultaneously.
14. cooling systems according to claim 12, it is characterised in that
It is judged as needs during above-mentioned first refrigerating module and the second refrigerating module run simultaneously During change operation method, controller noted above makes the first refrigerating module or the second refrigerating module stop.
15. 1 kinds of cooling systems, it is characterised in that
Including:
First refrigerating module, has the first compressor,
Second refrigerating module, capacity is more than the capacity of above-mentioned first refrigerating module, and has second Compressor,
Controller, is controlled above-mentioned first refrigerating module and above-mentioned second refrigerating module;
Controller noted above is more than one operation in above-mentioned first refrigerating module and the second refrigerating module During when being judged as needing changing operation method, make run refrigerating module stop and making another Refrigerating module runs, or, make a certain refrigerating module stop during all refrigerating modules run Only, or make to remain refrigerating module during 1 refrigerating module runs and add operation.
16. cooling system according to claim 15, it is characterised in that
During above-mentioned first refrigerating module runs, it is determined as being changed to operation object above-mentioned the During two refrigerating modules,
Controller noted above performs the set up procedure of above-mentioned second refrigerating module, and cools down above-mentioned second The set up procedure of module terminates to make afterwards the operation of above-mentioned first refrigerating module to stop.
17. cooling systems according to claim 15, it is characterised in that
During above-mentioned second refrigerating module runs, it is determined as being changed to operation object above-mentioned the During one refrigerating module,
Controller noted above reduces the aperture of the guide vane of above-mentioned second compressor, if above-mentioned water conservancy diversion leaf The aperture of sheet arrives reference opening amount, then perform the set up procedure of above-mentioned first refrigerating module.
18. cooling systems according to claim 17, it is characterised in that
Controller noted above, after the exhausted book of set up procedure of above-mentioned first refrigerating module, makes above-mentioned second The operation of refrigerating module stops.
19. cooling systems according to claim 17, it is characterised in that
Controller noted above judges anticipated duty, and load judgment is run the need of change on the estimation.
20. cooling systems according to claim 19, it is characterised in that
In time judging whether that the judgment standard needing to change above-mentioned operation includes that anticipated duty increases Judgment standard when judgment standard and anticipated duty reduce.
CN201510016321.5A 2014-08-22 2015-01-13 Cooling system Active CN105841374B (en)

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US20160054034A1 (en) 2016-02-25

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