CN106352575A - Multi-split frame type energy-saving air conditioner system and control method thereof - Google Patents
Multi-split frame type energy-saving air conditioner system and control method thereof Download PDFInfo
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- CN106352575A CN106352575A CN201610900730.6A CN201610900730A CN106352575A CN 106352575 A CN106352575 A CN 106352575A CN 201610900730 A CN201610900730 A CN 201610900730A CN 106352575 A CN106352575 A CN 106352575A
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- rack
- condenser
- vaporizer
- compressor
- electromagnetic valve
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Classifications
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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
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/06—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units
- F24F3/065—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units with a plurality of evaporators or condensers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/001—Compression cycle type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0046—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground
-
- 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/85—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using variable-flow pumps
Abstract
The invention discloses a multi-split frame type energy-saving air conditioner system and a control method thereof. The multi-split frame type energy-saving air conditioner system is characterized in that a natural cooling condenser is respectively connected with a first evaporator, a second evaporator and a third evaporator at outside through a second electromagnetic valve, a fourth electromagnetic valve and a sixth electromagnetic valve; a refrigerant pump is respectively connected with a first condenser, a second condenser and a third condenser at outside through a first electromagnetic valve, a third electromagnetic valve and a fifth electromagnetic valve; the first evaporator is connected with the first condenser, the second evaporator is connected with the second condenser, and the third evaporator is connected with the third evaporator. The multi-split frame type energy-saving air conditioner system has the advantages that the application of single unit cabinets is supported, the application of parallel multi-split cabinets is realized, and the multi-split frame type energy-saving air conditioner system can be used as an alternative plan of modularizing machine room applications; the investment cost is low, the installation and construction speed is high, and the running efficiency is high.
Description
Technical field
The present invention relates to technical field of air conditioner refrigeration, more particularly, to a kind of multi-joint rack energy-saving air conditioning system and its
Control method.
Background technology
In data center's industry, with the continuous growth to processing data information and application product for all trades and professions, in data
The heat density of central server also requires that more and more higher, thus front tens watts of unit caloric value several hectowatts till now, or even several
Kilowatt, also imply that the requirement also more and more higher of server radiating aspect, refrigeration radiating application mode also emerges in an endless stream, simultaneously
The utilization of the impact energy of the another aspect brought and consuming also will get more and more, how by equipment cooling do greener
Color more energy-conservation, is a major challenge that current data center air conditioner industry is faced.
In traditional data center machine room, a lot of applications are directly to blow out to server radiating by cold wind, and this mode is made
Become refrigerating capacity to waste a lot, and then lead to the diversified application mode such as floor blowing and cold and hot channel separation to occur, also for
The practical application of all kinds of industries provides diversified selection.
In current data center's industry, the more of application is that server is carried out cold and hot channel separation, increases sealing
Blind plate, prevents hot and cold air short circuit, and derive is cold passage closing, passage of heat closing, cold and hot channel enclosed application mode, enters
And there has also been the appearance of modular data center product.In above data center products, for middle-size and small-size data center
Energy-saving type air conditioner products application scheme is less, in large-scale data center, using compressor assembly integrated fluorine pumping system and integrated new
Rheumatism film is the refrigerated energy-saving mode more than the comparison of application.But above tradition and emerging air conditioner refrigerating side of data center
Method, all haves the shortcomings that certain；
Compressor assembly integrated wet film VMC (Ventilation Mechanical Control System): using wet film fresh air pattern, by outdoor low temperature and low humidity air-flow through wet film plus
Wet filtration, enters machine room, has that machine room humidity is uncontrollable, and high to the seal request of machine room；Under the outdoor environment of high humidity, pin
To very big limited by the application of cold and hot closed channel.
High cooling power compressor assembly integrated fluorine pumping system: the built-in interior of compressor is it is impossible to realize a condenser to supply multiple stage
The mode of operation of vaporizer, and there is no the energy-saving type air conditioner product of little cold section (1 to 20kw) in the market, the big portion of air conditioning system
Divide and all there is refrigerating capacity excessive (common refrigerating capacity all reaches 60kw) it is impossible to take into account rack data center products
Market application demand, the energy-saving type air conditioner for Single Cabinet level or multi-joint cabinet is applied it is difficult to realize.
Therefore, prior art has yet to be improved and developed.
Content of the invention
A kind of in view of above-mentioned the deficiencies in the prior art, it is an object of the invention to provide multi-joint rack energy-saving air conditioning system
And its control method, Single Cabinet application can be supported it is also possible to support multi-joint cabinet cabinet application, and can be used as modularity machine room
The replacement scheme of application, cost of investment is low, and installation is fast, and operational efficiency is high.
Technical scheme is as follows:
A kind of multi-joint rack energy-saving air conditioning system, the natural cooling condenser be respectively connected including fluid reservoir and with fluid reservoir and
Refrigerated medium pump, including the compressor assembly sharing the first vaporizer, the second vaporizer and the 3rd vaporizer and natural cooling system；
Described refrigerated medium pump pass through respectively the second electromagnetic valve, the 4th electromagnetic valve and the 6th electromagnetic valve respectively be arranged at the of interior
One vaporizer, the second vaporizer and the 3rd vaporizer connect；
Described natural cooling condenser passes through the first electromagnetic valve, the 3rd electromagnetic valve and the 5th electromagnetic valve respectively and is disposed in the outdoor
First condenser, the second condenser and the 3rd condenser connect；
Described first vaporizer is connected with the first condenser, and described second vaporizer is connected with described second condenser, and described
Three vaporizers are connected with the 3rd condenser.
Also include the first oil eliminator, the first compressor and the first gas-liquid separator being sequentially connected with the first condenser；
The second oil eliminator, the second compressor and the second gas-liquid separator being sequentially connected with the second condenser；
The 3rd oil eliminator, the 3rd compressor and the 3rd gas-liquid separator being sequentially connected with the 3rd condenser.
Described multi-joint rack energy-saving air conditioning system includes: when having refrigeration demand in rack and rack return air temperature is less than
During more than 10 DEG C of outdoor environment return air temperature, control the first compressor operating and the frequency in the first compressor is run to limiting frequency
Control the second compressor operating, after the second compressor operating to limiting time delay detect rack refrigeration demand, root after frequency range during section
Judge whether to run the 3rd compressor according to refrigeration demand, simultaneously close off the first to the 6th electromagnetic valve, close refrigerated medium pump and nature
Cooling fan, opens the first to the 3rd condenser.
Also include:
When having refrigeration demand and outdoor temperature to be less than more than 10 DEG C of cabinet air conditioner return air temperature in rack, start refrigerated medium pump,
First electromagnetic valve, the second electromagnetic valve, the first vaporizer, control the first expansion valve standard-sized sheet；Time delay detects rack refrigeration demand, has system
Open the 3rd electromagnetic valve, the 4th electromagnetic valve, the second vaporizer during cold demand, control the second expansion valve；Time delay detection rack again
Refrigeration demand, has during refrigeration demand and opens the 5th electromagnetic valve and the 6th electromagnetic valve.
Also include:
Refrigerated medium pump running frequency is adjusted according to rack refrigeration demand rack load is adapted in real time by variable-flow application；
When there being dehumidification in rack, control one or more of the first to the 3rd expansion valve control valve opening size, root
Judge according to effect on moisture extraction and control whether the first to the 3rd expansion valve enters or exit dehumidifying shaping modes.
A kind of multi-joint rack energy-saving air conditioning system, the natural cooling condensation be respectively connected including fluid reservoir and with fluid reservoir
Device and refrigerated medium pump, including compressor assembly, natural cooling system and hybrid system, described naturally cold vaporizer and described compressor
Vaporizer is mounted side by side, shared indoor fan；
Described natural cooling condenser pass through respectively the first electromagnetic valve, the second electromagnetic valve and the 3rd electromagnetic valve respectively be arranged on room
The naturally cold vaporizer of interior first, the cold vaporizer of the second nature and the cold vaporizer of Third Nature connect；
Described refrigerated medium pump is divided by the first naturally cold expansion valve, the cold expansion valve of the second nature and the cold expansion valve of Third Nature respectively
Vaporizer naturally cold with first being disposed in the interior, the cold vaporizer of the second nature and the cold vaporizer of Third Nature are not connected；
The first vaporizer of also including being sequentially connected, the first compressor, the first condenser, the first expansion valve；Being sequentially connected
Two vaporizers, the second compressor, the second condenser, the second expansion valve；3rd vaporizer, the 3rd compressor, the 3rd condenser,
Three expansion valves；
Described natural cooling system includes the refrigerated medium pump, the first electromagnetic valve, the first naturally cold expansion valve, first that head and the tail connect successively
Naturally cold vaporizer, natural cool condenser and fluid reservoir.
Multi-joint rack energy-saving air conditioning system includes: is less than outdoor ring when having refrigeration demand and rack return air temperature in rack
During more than 7 DEG C of border return air temperature, control the first compressor operating and the frequency in the first compressor is run to limiting frequency range time control
Make the second compressor operating, after the second compressor operating to limiting time delay detect rack refrigeration demand after frequency range, according to refrigeration
Demand runs the 3rd compressor, simultaneously closes off the first to the 3rd electromagnetic valve, closes refrigerated medium pump and natural cooling fan, opens the
One to the 3rd condenser.
Also include:
When having refrigeration demand and outdoor temperature to be less than more than 7 DEG C of cabinet air conditioner return air temperature in rack, open first to the 3rd
Naturally cold expansion valve, controls refrigerated medium pump limiting frequency range operation, controlling the cold condenser fan of nature to run；Time delay simultaneously detects rack
Refrigeration demand, has during refrigeration demand and opens the with compressor；First compressor operating is to time delay testing machine again when limiting frequency range
Cabinet refrigeration demand, runs the second compressor and the 3rd compressor according to refrigeration demand.
Also include:
When having refrigeration demand in rack and outdoor temperature is less than the cabinet air conditioner return air temperature temperature difference more than 7 DEG C, open cold-producing medium
Pump, the first electromagnetic valve, the first naturally cold vaporizer, time delay detects rack refrigeration demand, has during refrigeration demand and opens the second electromagnetism
The cold vaporizer of valve, the second nature, the cold expansion valve of the second nature；Time delay detection rack refrigeration demand, has and opens during refrigeration demand again
Open the 3rd electromagnetic valve.
Also include:
Refrigerated medium pump running frequency is adjusted according to rack refrigeration demand rack load is adapted to by variable-flow application in good time；
When there being dehumidification in rack, control one or more of the cold expansion valve of the first to Third Nature control valve opening big
Little, judge according to effect on moisture extraction and control whether the cold expansion valve of the first to Third Nature enters or exit dehumidifying shaping modes.
Multi-joint rack energy-saving air conditioning system provided by the present invention and its control method, can support that Single Cabinet is applied,
Multi-joint cabinet cabinet application can also be supported, and can be low as the replacement scheme of modularity machine room application, cost of investment, installation is applied
Work is fast, and operational efficiency is high；This energy-saving type air conditioner integral compressor system and natural cooling system, are judged by the refrigeration demand of controller
With analysis intelligent selection compressor mode, mixed model, natural three kinds of application modes of chill formula, mixing and natural cold operation mould
Cold output control can accurately be carried out under formula, in conjunction with compressor variable frequency control system, meet 1 to 20kw rack data center
The energy-saving run of annual different load, effectively reduces data center's pue value it is ensured that data center products normal table runs.
Brief description
Fig. 1 is the structural representation of multi-joint rack energy-saving air conditioning system first embodiment in the present invention.
Fig. 2 is the structural representation of multi-joint rack energy-saving air conditioning system second embodiment in the present invention.
Specific embodiment
The present invention provides a kind of multi-joint rack energy-saving air conditioning system and its control method, for making the purpose of the present invention, skill
Art scheme and effect are clearer, clear and definite, referring to the drawings and give an actual example that the present invention is described in more detail.Should manage
Solution, specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
Embodiment one
Refer to Fig. 1, the multi-joint rack energy-saving air conditioning system that the present invention provides, by pump circulation module 1, indoor 2 and outdoor
Side 3 forms, and it includes controller, liquid storage pipe and the natural cooling condenser being connected respectively with fluid reservoir 11 and refrigerated medium pump 14,
Differential-pressure bypass valve 13 is parallel with refrigerated medium pump 14.Including the pressure sharing the first vaporizer, the second vaporizer and the 3rd vaporizer
Contracting machine system and natural cooling system.
Described refrigerated medium pump 14 passes through the second electromagnetic valve 212, the 4th electromagnetic valve 214 and the 6th electromagnetic valve 216 respectively respectively
It is connected with the first vaporizer 221 being arranged at outdoor, the second vaporizer 222 and the 3rd vaporizer 223.
Described natural cool condenser 12 passes through the first electromagnetic valve 211, the 3rd electromagnetic valve 213 and the 5th electromagnetic valve 215 respectively
It is connected with the first condenser 311 being disposed in the outdoor, the second condenser 312 and the 3rd condenser 313.
Described first vaporizer 221 is connected with the first condenser 311, and described second vaporizer 222 condenses with described second
Device 312 connects, and described 3rd vaporizer 223 is connected with the 3rd condenser 313.
Further, described multi-joint rack energy-saving air conditioning system, also includes being sequentially connected with the first condenser 311
One oil eliminator 341, the first compressor 321 and the first gas-liquid separator 331.
The second oil eliminator 342, the second compressor 322 and the second gas-liquid separation being sequentially connected with the second condenser 312
Device 332.
The 3rd oil eliminator 343, the 3rd compressor 323 and the 3rd gas-liquid separation being sequentially connected with the 3rd condenser 313
Device 333.
The operational process of natural chill formula is:
Refrigerated medium pump the second electromagnetic valve the first expansion valve the first vaporizer the first electromagnetic valve nature cool condenser
Fluid reservoir refrigerated medium pump；
Compressor mode operational process:
First compressor oil separator the first condenser the first expansion valve the first vaporizer -- gas-liquid separator
One compressor.
As seen from the figure, fluid reservoir 11, natural cooling condenser and refrigerated medium pump 14 constitute pump circulation module, expansion valve and steaming
Send out device to constitute is inner side module, and it is outside module that condenser, oil eliminator, compressor and gas-liquid separator are constituted.Wherein first
Gas-liquid separator 331 is connected with the first condenser 311 again, and the first gas-liquid separator 331, the first condenser 311, first are separating of oil
Device 341, the first compressor 321 and the first connection of the first gas-liquid separator 331；Second gas-liquid separator 332 condenses with second again
Device 312 connects, the second gas-liquid separator 332, the second condenser 312, the second oil eliminator 342, the second compressor 322 and second
Gas-liquid separator 332 is the first to be connected；3rd gas-liquid separator 333 is connected with the 3rd condenser 313 again, the 3rd gas-liquid separator
333rd, the 3rd condenser 313, the 3rd oil eliminator 343, the 3rd compressor 323 and the first connection of the 3rd gas-liquid separator 333.
The present invention is divided into compressor assembly and natural cooling system, and compressor mode operation logic is: compressor is cold to first
Condenser 311 to the first expansion valve 231 to the first vaporizer 221.Natural cooling system shares indoor evaporator, indoor fan and interior
Outer machine gas side and liquid side connecting tube；When opening nature cooling system, by opening the bypass solenoid valve of gas-liquid connecting tube, carry out
Freecooling mode operation, a natural cooling system can support that one or more indoor energy-saving air-conditioning works simultaneously, core mould
Block is refrigerated medium pump 14, intelligent controller etc.；Multiple stage indoor set shares a freecooling condenser 12, decreases condensation
Device quantity and the installing space of live condenser.
With reference to the control method of the present invention, the multi-joint rack energy-saving air conditioning system of the present invention is done and further say
Bright；The control method of described multi-joint rack energy-saving air conditioning system, including compressor assembly pattern:
When having refrigeration demand and rack return air temperature to be less than more than 10 DEG C of outdoor environment return air temperature in rack, that is, when in rack
There is refrigeration demand, if now rack return air temperature is higher than outdoor environment temperature, and when both temperature gaps are less than 10 DEG C, control
First compressor 321 runs and controls the second compressor 322 to transport when the frequency of the first compressor 321 is run to restriction frequency range
OK, run to limiting time delay detect rack refrigeration demand after frequency range after the second compressor 322, run the 3rd according to refrigeration demand
Compressor 323, simultaneously closes off the first to the 6th electromagnetic valve 216, closes refrigerated medium pump 14 and condenser, open first cold to the 3rd
Condenser 313.
For easier description the present embodiment, below the labelling description of first, second, third, etc. is replaced with first, the
2nd, third class labelling replaces, similarly hereinafter.For example: be less than outdoor environment return air when having refrigeration demand and rack return air temperature in rack
During more than 10 DEG C of temperature, that is, when having refrigeration demand in rack, if now rack return air temperature is higher than outdoor environment temperature, and both
Temperature gap when being less than 10 DEG C, controller intelligent decision compressor assembly is opened, and the first compressor 321 runs, machine to be compressed
After frequency rises to high frequency, the second compressor 322 runs, and when rising to high frequency, after time delay 3 minutes, detection rack refrigeration needs
Ask, if still having refrigeration demand, operation also opened by the 3rd compressor 323.Now the first to the 6th electromagnetic valve 216 remains turned-off shape
State, refrigerated medium pump 14 is closed, freecooling condenser 12(natural cooling condenser) condensation fan close, first to the
Three condensation fans are opened.
The control method of described described multi-joint rack energy-saving air conditioning system, also includes nature cooling system pattern:
When having refrigeration demand in rack and outdoor temperature is less than the cabinet air conditioner return air temperature temperature difference more than more than 10 DEG C, that is, work as machine
There is refrigeration demand, if now rack return air temperature is higher than outdoor environment temperature, and both temperature gaps are more than or equal to 10 in cabinet
DEG C when, start refrigerated medium pump 14, the first electromagnetic valve 211, the second electromagnetic valve 212, the first vaporizer 221 and the first electromagnetic valve 211；
Time delay detects rack refrigeration demand, has during refrigeration demand and opens the 3rd electromagnetic valve 213, the 4th electromagnetic valve 214, the second vaporizer
222 and second expansion valve 232；Time delay detection rack refrigeration demand again, has during refrigeration demand and opens the 5th electromagnetic valve 215 and the
Six electromagnetic valves 216.
For example: when having refrigeration demand in rack, and outdoor temperature less than the cabinet air conditioner return air temperature temperature difference reach 10 DEG C with
On, that is, when having refrigeration demand in rack, if now rack return air temperature is higher than outdoor environment temperature, and both temperature gaps are big
When equal to 10 DEG C, controller intelligent decision nature cooling system is opened, and now refrigerated medium pump 14 is opened, the first to the second electromagnetic valve
212 unlatchings, the first vaporizer 221 runs, the first expansion valve standard-sized sheet；Time delay 3 minutes, detection rack have refrigeration demand, the 3rd to
4th electromagnetic valve 214 is opened, and the second vaporizer 222 runs, the second expansion valve standard-sized sheet；3min time delay again, judges refrigeration demand,
5th to the 6th electromagnetic valve 216 is opened.
Further, adjust refrigerated medium pump 14 running frequency according to rack refrigeration demand to adapt in real time by variable-flow application
Rack loads；When there being dehumidification in rack, control one or more of the first to the 3rd expansion valve 233 control valve opening
Size, judges according to effect on moisture extraction and controls whether the first to the 3rd expansion valve 233 enters or exit dehumidifying shaping modes.
I.e. according to rack refrigeration demand, refrigerated medium pump 14 enters line frequency and adjusts, and is applied by variable-flow, adapts to rack in real time
Heat load, stable operation.The condensation fan of freecooling condenser 12, according to the number opening vaporizer, carries out air quantity tune
Section, the run time reducing condensation fan rotating speed or reducing condensation fan, energy-conservation.When interior of equipment cabinet has dehumidification, control
Device carries out expanding valve regulation, turns down valve opening, and indoor fan intelligently drops air quantity, is dehumidified；Simultaneously according to effect on moisture extraction, judge
Whether the first to the 3rd expansion valve enters or exits dehumidification mode.
Embodiment two
Refer to Fig. 2, as an alternative embodiment of the invention, described multi-joint rack energy-saving air conditioning system, by pump circulation mould
Block 4, indoor 6 and outside 5 form；It includes controller, liquid storage pipe and the freecooling being connected respectively with fluid reservoir 41
Condenser 42 (natural cooling condenser) and refrigerated medium pump 44, refrigerated medium pump 44 is parallel with differential-pressure bypass valve 43.Including compression
Machine system, natural cooling system and hybrid system, described compressor assembly and described natural cooling system are respectively using independent first
Vaporizer, the second vaporizer and the 3rd vaporizer.Described naturally cold vaporizer and described compressor vaporizer are mounted side by side, and share
Drip tray and indoor fan.
Described natural cooling condenser passes through the first electromagnetic valve 651, the second electromagnetic valve 652 and the 3rd electromagnetic valve 653 respectively
Naturally cold vaporizer 631, the cold vaporizer of the second nature 632 and the cold vaporizer of Third Nature with first being disposed in the interior respectively
633 connections.
Described refrigerated medium pump passes through the first naturally cold expansion valve 641, the cold expansion valve of the second nature 642 and Third Nature respectively
Cold expansion valve 643 respectively with first being disposed in the interior naturally cold vaporizer 631, the cold vaporizer of the second nature 632 and the 3rd from
So cold vaporizer 633 connects.
The first vaporizer 621 of also including being sequentially connected, the first compressor 521, the first condenser 511, the first expansion valve
611；The second vaporizer 622 of being sequentially connected, the second compressor 522, the second condenser 512, the second expansion valve 612；3rd steaming
Send out device 623, the 3rd compressor 523, the 3rd condenser 513, the 3rd expansion valve 613.
The natural cooling system of the present invention independently uses indoor evaporator and indoor and outdoor machine connecting tube, naturally cold vaporizer and pressure
Contracting machine vaporizer is mounted side by side, shared drip tray, shared indoor fan.This embodiment two has three kinds of mode of operations, compressor mould
Formula, natural chill formula and mixed model work, natural cooling system is independent loops system, can enable mixed-mode operations.
With reference to the control method of the present invention, the multi-joint rack energy-saving air conditioning system of the present invention is done and further say
Bright；The control method of described multi-joint rack energy-saving air conditioning system, including compressor assembly pattern:
When having refrigeration demand and rack return air temperature to be less than more than 7 DEG C of outdoor environment return air temperature in rack, that is, when in rack
There is refrigeration demand, if now rack return air temperature is higher than outdoor environment temperature, and when both temperature gaps are less than 7 DEG C, control
First compressor 521 runs and controls the second compressor 522 to transport when the frequency of the first compressor 521 is run to restriction frequency range
OK, run to limiting time delay detect rack refrigeration demand after frequency range after the second compressor 522, run the 3rd according to refrigeration demand
Compressor 523, simultaneously closes off the first to the 3rd electromagnetic valve 653, closes refrigerated medium pump and condenser, opens the first to the 3rd condensation
Device 513.
For example: when having refrigeration demand and rack return air temperature to be less than more than 7 DEG C of outdoor environment return air temperature in rack, that is, when
There is refrigeration demand, if now rack return air temperature is higher than outdoor environment temperature, and both temperature gaps are less than 7 DEG C in rack
When, controller intelligent decision compressor assembly is opened, and the first compressor 521 runs, after unit frequency to be compressed rises to high frequency, the
Two compressors 522 run, and when rising to high frequency, after time delay 3 minutes, detect rack refrigeration demand, if still having refrigeration demand,
Operation also opened by 3rd compressor 523.Now the first to the 3rd electromagnetic valve 653 remains off, and refrigerated medium pump is closed,
Freecooling condensation fan is closed, and the first to the 3rd condensation fan is opened.
The control method of described described multi-joint rack energy-saving air conditioning system, also includes mixed model:
When having refrigeration demand and outdoor temperature to be less than more than 7 DEG C of cabinet air conditioner return air temperature in rack, that is, when there being system in rack
Cold demand, if now rack return air temperature is higher than outdoor environment temperature, and when both temperature gaps are more than or equal to 7 DEG C, opens
The cold expansion valve of the first to Third Nature, controls refrigerated medium pump limiting frequency range operation, controlling nature cool condenser to run；Time delay is simultaneously
Detection rack refrigeration demand, has during refrigeration demand and opens the first compressor；First compressor 521 run to limit frequency range when again
Time delay detects rack refrigeration demand, runs the second compressor 522 and the 3rd compressor 523 according to refrigeration demand.
For example: when having refrigeration demand in rack, and outdoor temperature reaches more than 7 DEG C, that is, less than cabinet air conditioner return air temperature
When having refrigeration demand in rack, if now rack return air temperature is higher than outdoor environment temperature, and both temperature gaps are more than etc.
When 7 DEG C, controller intelligent decision nature cooling system is preferentially opened, the now cold expansion valve of the first to Third Nature 643 standard-sized sheet, system
Cryogenic fluid pump highest frequency runs, freecooling condensation fan full speed running, and now compressor assembly is not turned on；Time delay in 3 minutes
Afterwards, controller detection rack still has refrigeration demand, then open the first compressor 521, and compressor runs paramount frequency from low frequency
Afterwards, detection time delay 3 minutes, judges whether to need to start the second to the 3rd compressor 523 according to real-time refrigeration demand.
The control method of described multi-joint rack energy-saving air conditioning system, also includes nature cooling system pattern, described nature
It is naturally cold that cooling system includes the refrigerated medium pump that head and the tail connect, the naturally cold expansion valve 641, first of the first electromagnetic valve 651, first successively
Vaporizer 631, natural cool condenser and fluid reservoir 41.Natural cooling mode operation logic is: refrigerated medium pump is to the first electromagnetic valve
The naturally cold vaporizer 631 of 651 to the first naturally cold expansion valves 641 to the first is to natural cool condenser to fluid reservoir 41 to cold-producing medium
Pump.
When having refrigeration demand in rack and outdoor temperature is less than the cabinet air conditioner return air temperature temperature difference more than 7 DEG C, that is, work as machine
There is refrigeration demand, if now rack return air temperature is higher than outdoor environment temperature, and both temperature gaps are more than or equal to 7 DEG C in cabinet
When, open refrigerated medium pump, the naturally cold vaporizer 631 of the first electromagnetic valve 651, first, time delay detects rack refrigeration demand, has refrigeration
The second electromagnetic valve 652, the cold vaporizer of the second nature 632, the cold expansion valve of the second nature 642 is opened during demand；Time delay detection again
Rack refrigeration demand, has unlatching the 3rd electromagnetic valve 653 during refrigeration demand.
For example: when having refrigeration demand in rack, and outdoor temperature less than the cabinet air conditioner return air temperature temperature difference reach 7 DEG C with
On, that is, when having refrigeration demand in rack, if now rack return air temperature is higher than outdoor environment temperature, and both temperature gaps are big
When equal to 7 DEG C, controller intelligent decision nature cooling system is opened, and now refrigerated medium pump is opened, and the first electromagnetic valve 651 is opened,
First naturally cold vaporizer 631 works, the first naturally cold expansion valve 641 standard-sized sheet, and compressor assembly is closed；Time delay in 3 minutes, detection
Rack still has refrigeration demand, and the second electromagnetic valve 652 is opened, and the cold vaporizer of the second nature 632 works, the cold expansion valve of the second nature
642 standard-sized sheets；Time delay in 3 minutes, judges refrigeration demand again, and the 3rd electromagnetic valve 653 is opened.
Further, the control method of described described multi-joint rack energy-saving air conditioning system, natural cooling system pattern is also
Including:
Refrigerated medium pump running frequency is adjusted according to rack refrigeration demand rack load is adapted in real time by variable-flow application；Work as rack
When inside having dehumidification, control one or more of the cold expansion valve of the first to Third Nature 643 control valve opening size, according to
Effect on moisture extraction judges and controls whether the cold expansion valve of the first to Third Nature 643 enters or exit dehumidifying shaping modes.
More than execution, simultaneously, according to rack refrigeration demand, refrigerated medium pump enters line frequency and adjusts natural cooling system pattern, leads to
Cross variable-flow application, adapt to rack heat load, stable operation in real time.When interior of equipment cabinet has dehumidification, controller is carried out certainly
So cold expansion valve regulation, turns down valve opening, and indoor fan intelligently drops air quantity, is dehumidified；Simultaneously according to effect on moisture extraction, judge
Whether the cold expansion valve of one to Third Nature 643 enters or exits dehumidification mode.
Intelligent control method, intelligent controller according to the air inlet/outlet temperature difference of air-conditioning in rack and machine room indoor/outdoor temperature-difference,
Calculate the refrigeration demand of rack heat load, intellectual analysis judge whether possess the condition opening nature cooling system, and need to open
Open the number of units of nature cooling system rack energy-saving type air conditioner.Frequency conversion refrigerated medium pump can follow according to refrigeration demand intelligence output frequency, regulation
Circulation, meets rack heat load cold requirement；Freecooling condensating wind function changes according to indoor refrigeration capacity requirement in real time
Carry out intelligent speed-regulating, reduce running speed or reduce run time, at utmost utilize outdoor cold source, more efficient energy-saving；With
When pump circulation module controller communicated with air-conditioning own controller, detection cabinet environment whether possess dehumidification, if need
Then feedback carries out expansion valve opening control for dehumidifying, and refrigerated medium pump reduces frequency and reduces flow output, and indoor fan reduces blower fan and turns
Speed, controller tests and analyzes real-time effect on moisture extraction according to humidity sensor, is turned on and off air conditioner dehumidification function, and can intelligently enter
Row refrigeration switches with except wet condition.
It should be appreciated that the application of the present invention is not limited to above-mentioned citing, for those of ordinary skills, can
To be improved according to the above description or converter technique scheme all should belong to the protection domain of claims of the present invention.
Claims (10)
1. a kind of multi-joint rack energy-saving air conditioning system, the natural cooling condenser be respectively connected including fluid reservoir and with fluid reservoir
With refrigerated medium pump it is characterised in that: include share the first vaporizer, the second vaporizer and the 3rd vaporizer compressor assembly and
Natural cooling system；
Described refrigerated medium pump pass through respectively the second electromagnetic valve, the 4th electromagnetic valve and the 6th electromagnetic valve respectively be arranged at the of interior
One vaporizer, the second vaporizer and the 3rd vaporizer connect；
Described natural cooling condenser passes through the first electromagnetic valve, the 3rd electromagnetic valve and the 5th electromagnetic valve respectively and is disposed in the outdoor
First condenser, the second condenser and the 3rd condenser connect；
Described first vaporizer is connected with the first condenser, and described second vaporizer is connected with described second condenser, and described
Three vaporizers are connected with the 3rd condenser.
2. multi-joint rack energy-saving air conditioning system according to claim 1 is it is characterised in that also include and the first condenser
The first oil eliminator, the first compressor and the first gas-liquid separator being sequentially connected；
The second oil eliminator, the second compressor and the second gas-liquid separator being sequentially connected with the second condenser；
The 3rd oil eliminator, the 3rd compressor and the 3rd gas-liquid separator being sequentially connected with the 3rd condenser.
3. a multi-joint rack energy-saving air conditioning system according to claim 2 it is characterised in that:
When having refrigeration demand and rack return air temperature to be less than more than 10 DEG C of outdoor environment return air temperature in rack, control the first pressure
Contracting machine runs and controls the second compressor operating when the frequency of the first compressor is run to restriction frequency range, treats the second compressor fortune
Row, to limiting time delay detect rack refrigeration demand after frequency range, judges whether to run the 3rd compressor according to refrigeration demand, simultaneously
Close the first to the 6th electromagnetic valve, close refrigerated medium pump and natural cooling fan, open the first to the 3rd condenser.
4. multi-joint rack energy-saving air conditioning system according to claim 3 is it is characterised in that also include:
When having refrigeration demand and outdoor temperature to be less than more than 10 DEG C of cabinet air conditioner return air temperature in rack, start refrigerated medium pump,
First electromagnetic valve, the second electromagnetic valve, the first vaporizer, control the first expansion valve standard-sized sheet；Time delay detects rack refrigeration demand, has system
Open the 3rd electromagnetic valve, the 4th electromagnetic valve, the second vaporizer during cold demand, control the second expansion valve；Time delay detection rack again
Refrigeration demand, has during refrigeration demand and opens the 5th electromagnetic valve and the 6th electromagnetic valve.
5. multi-joint rack energy-saving air conditioning system according to claim 4 is it is characterised in that also include:
Refrigerated medium pump running frequency is adjusted according to rack refrigeration demand rack load is adapted in real time by variable-flow application；
When there being dehumidification in rack, control one or more of the first to the 3rd expansion valve control valve opening size, root
Judge according to effect on moisture extraction and control whether the first to the 3rd expansion valve enters or exit dehumidifying shaping modes.
6. a kind of multi-joint rack energy-saving air conditioning system, the natural cooling condenser be respectively connected including fluid reservoir and with fluid reservoir
With refrigerated medium pump it is characterised in that: include compressor assembly, natural cooling system and hybrid system, described naturally cold vaporizer with
Described compressor vaporizer is mounted side by side, shared indoor fan；
Described natural cooling condenser pass through respectively the first electromagnetic valve, the second electromagnetic valve and the 3rd electromagnetic valve respectively be arranged on room
The naturally cold vaporizer of interior first, the cold vaporizer of the second nature and the cold vaporizer of Third Nature connect；
Described refrigerated medium pump is divided by the first naturally cold expansion valve, the cold expansion valve of the second nature and the cold expansion valve of Third Nature respectively
Vaporizer naturally cold with first being disposed in the interior, the cold vaporizer of the second nature and the cold vaporizer of Third Nature are not connected；
The first vaporizer of also including being sequentially connected, the first compressor, the first condenser, the first expansion valve；Being sequentially connected
Two vaporizers, the second compressor, the second condenser, the second expansion valve；3rd vaporizer, the 3rd compressor, the 3rd condenser,
Three expansion valves；
Described natural cooling system includes the refrigerated medium pump, the first electromagnetic valve, the first naturally cold expansion valve, first that head and the tail connect successively
Naturally cold vaporizer, natural cool condenser and fluid reservoir.
7. a kind of control method being applied to multi-joint rack energy-saving air conditioning system described in claim 6 it is characterised in that:
When having refrigeration demand and rack return air temperature to be less than more than 7 DEG C of outdoor environment return air temperature in rack, control the first pressure
Contracting machine runs and controls the second compressor operating when the frequency of the first compressor is run to restriction frequency range, treats the second compressor fortune
Row, to limiting time delay detect rack refrigeration demand after frequency range, runs the 3rd compressor according to refrigeration demand, simultaneously closes off first
To the 3rd electromagnetic valve, close refrigerated medium pump and natural cooling fan, open the first to the 3rd condenser.
8. the control method of described multi-joint rack energy-saving air conditioning system according to claim 7 is it is characterised in that also wrap
Include:
When having refrigeration demand and outdoor temperature to be less than more than 7 DEG C of cabinet air conditioner return air temperature in rack, open first to the 3rd
Naturally cold expansion valve, controls refrigerated medium pump limiting frequency range operation, controlling the cold condenser fan of nature to run；Time delay simultaneously detects rack
Refrigeration demand, has during refrigeration demand and opens the with compressor；First compressor operating is to time delay testing machine again when limiting frequency range
Cabinet refrigeration demand, runs the second compressor and the 3rd compressor according to refrigeration demand.
9. the control method of described multi-joint rack energy-saving air conditioning system according to claim 8 is it is characterised in that also wrap
Include:
When having refrigeration demand in rack and outdoor temperature is less than the cabinet air conditioner return air temperature temperature difference more than 7 DEG C, open cold-producing medium
Pump, the first electromagnetic valve, the first naturally cold vaporizer, time delay detects rack refrigeration demand, has during refrigeration demand and opens the second electromagnetism
The cold vaporizer of valve, the second nature, the cold expansion valve of the second nature；Time delay detection rack refrigeration demand, has and opens during refrigeration demand again
Open the 3rd electromagnetic valve.
10. the control method of described multi-joint rack energy-saving air conditioning system according to claim 9 is it is characterised in that go back
Including:
Refrigerated medium pump running frequency is adjusted according to rack refrigeration demand rack load is adapted to by variable-flow application in good time；
When there being dehumidification in rack, control one or more of the cold expansion valve of the first to Third Nature control valve opening big
Little, judge according to effect on moisture extraction and control whether the cold expansion valve of the first to Third Nature enters or exit dehumidifying shaping modes.
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| CN113280541A (en) * | 2021-06-29 | 2021-08-20 | 江苏拓米洛环境试验设备有限公司 | Control method and device for multi-chamber electronic expansion valve of refrigeration system and refrigeration system |
| CN113280541B (en) * | 2021-06-29 | 2022-09-20 | 江苏拓米洛环境试验设备有限公司 | Control method and device for multi-chamber electronic expansion valve of refrigeration system and refrigeration system |
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