CN109114718A - Computer room compound air-conditioning system and its control method - Google Patents
Computer room compound air-conditioning system and its control method Download PDFInfo
- Publication number
- CN109114718A CN109114718A CN201811133836.3A CN201811133836A CN109114718A CN 109114718 A CN109114718 A CN 109114718A CN 201811133836 A CN201811133836 A CN 201811133836A CN 109114718 A CN109114718 A CN 109114718A
- Authority
- CN
- China
- Prior art keywords
- compressor
- oil
- low
- heat pipe
- refrigeration
- 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.)
- Pending
Links
Classifications
-
- 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
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- 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
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of 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
- 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
Abstract
The invention discloses a kind of computer room compound air-conditioning systems, including compressor, oil eliminator, refrigerant condenser, throttling set, low-pressure oil storage, refrigerated medium pump, evaporator, heat pipe condenser and oil catcher；Refrigeration mode, composite mode and heat pipe mode are separately operable by the switching that control triple valve executes circulation loop, and carry out cold regulation and periodical oil return control, the present invention is suitable for the refrigeration demand of the round-the-clock air-conditionings such as computer room, base station, maximally utilize round the clock, the natural cooling source of transition season and winter, heat pipe run wide temperature region, compact-sized, high reliablity, energy conservation and environmental protection.
Description
Technical field
The present invention relates to air-conditioning technical fields, and in particular to one kind can maximally utilize the compound computer room of natural cooling source
Air-conditioning system and its control method.
Background technique
The fast development of information industry and digital Construction, has pushed the quantity of computer room, base station, and construction scale quickly increases
It is long, according to statistics computer room, base station air conditioner energy consumption account for the 40%~50% of its total energy consumption.Computer room, the sensible heat load ratio of base station are big, and one
The four seasons in year need continuous operation, and side set temperature is lower than the season of outside temperature indoors, and conventional air-conditioning system still needs to continue
Compression-type refrigerating system is run, refrigeration system working efficiency is low and easily breaks down, if indoor/outdoor temperature-difference low cost can be utilized
Conveying heat provides cooling capacity for indoor, will greatly reduce the energy consumption and operating cost of air-conditioning system.In the high warm season such as summer
Section is by utilizing cold achievable refrigeration system efficient operation.Significantly lifting system efficiency.It is room using outdoor Cryogenic air
The method that inside provides cooling capacity has obtained the concern of scholar in the industry and engineers and technicians, and engineering skill is unfolded in different forms
Art research, such as currently used fresh air system, in addition there are various forms of gas-gas, air-water heat-exchange system, and application
The composite air conditioner of hot pipe technique.
Summary of the invention
The purpose of the present invention is to provide one kind can efficiently use outdoor cold source, energy-efficient, and high reliablity is answered
Mould assembly air precision air conditioning system.
It is another object of the present invention to provide a kind of control methods for above-mentioned compound air precision air conditioning system, use
In compound air precision air conditioning system running mode switching, cooling capacity accuracy controlling and system oil return.
Realizing the technical solution of above-mentioned purpose is:
A kind of computer room compound air-conditioning system, including compressor, oil eliminator, refrigerant condenser, throttling set, low pressure
Liquid storage device, refrigerated medium pump, evaporator, heat pipe condenser and oil catcher, wherein
The entrance of the oil eliminator is connected with the exhaust outlet of compressor, and the oil return opening of oil eliminator is connected by capillary
It is connected to the gas returning port of compressor；
The entrance of the refrigerant condenser is connected with the outlet of oil eliminator；
The oil catcher is equipped with oil inlet, oil-collecting gas returning port, oil return opening, backheat import, backheat outlet and reheat coils；It returns
Hot import is exported with backheat and is connected to by reheat coils；
The low-pressure oil storage is equipped with air inlet, liquid storage gas returning port, inlet and supply opening, sets in the middle part of the liquid storage device
There are liquid level line and oil outlet；
The oil inlet is connected to the oil outlet；The oil-collecting gas returning port is connected to the gas returning port of compressor；Described time
Hydraulic fluid port is connected to the gas returning port of compressor；The outlet of the backheat import and refrigerant condenser；The backheat outlet passes through
Throttling set is connected to the inlet；
The liquid storage gas returning port is connected with the gas returning port of compressor, and the supply opening is connected with the entrance of refrigerated medium pump
Logical, the outlet of refrigerated medium pump is connected with the entrance of evaporator；
The second end of the first end of the outlet triple valve of the evaporator, triple valve is connected to the air inlet；Threeway
The third end of valve is connected to the air inlet by heat pipe condenser；
The heat pipe condenser and refrigerant condenser include blower.
Preferably, the refrigerated medium pump is variable frequency pump.
Preferably, the both ends of the refrigerated medium pump are parallel with by-passing valve.
Preferably, the refrigerant condenser and heat pipe condenser are all made of parallel-flow heat exchanger or finned heat exchanger, and
In face of wind direction parallel side-by-side, heat pipe condenser is located at inlet air side, refrigerant condenser is located at air side.
It preferably, further include temperature control device,
The temperature control device connects with the blower of the triple valve, heat pipe condenser and refrigerant condenser and compressor respectively
It connects, the environment temperature outside the temperature control device sensing chamber, and the triple valve, blower and compressor is controlled according to environment temperature
Operating status；
The temperature control device is connect with low-pressure oil storage, for detecting the low-pressure oil storage internal refrigeration storage agent temperature, and
By refrigerant temperature compared with setting value, the operating status of control compressor, blower and throttling set.
A kind of control method of the computer room compound air-conditioning system, is decomposed into refrigeration area, recombination region for wide circumstance temperature band
With three, heat pipe area functional areas,
As outdoor environment temperature T > Tb, the refrigeration mode corresponding to refrigeration area is: triple valve, which switches to, to freeze back
Road, heat transferring medium trend are as follows: compressor-oil eliminator-refrigerant condenser-oil catcher-throttling set-low-pressure oil storage-compression
Machine and refrigerated medium pump-evaporator-triple valve-low-pressure oil storage-refrigerated medium pump；
When outdoor environment temperature meets Ta≤T≤Tb, the composite mode corresponding to recombination region is: triple valve is switched to
Heat pipe circuit, the trend of heat transferring medium are as follows: compressor-oil eliminator-refrigerant condenser-oil catcher-throttling set-low pressure receiver
Device-compressor and refrigerated medium pump-evaporator-triple valve-heat pipe condenser-low-pressure oil storage-refrigerated medium pump；Wherein heat pipe
System is operated at full capacity, and refrigeration system works in right amount；
As outdoor environment temperature T < Ta, the heat pipe mode corresponding to heat pipe area is: refrigeration system stops working, and three
Port valve switches to heat pipe circuit, heat transferring medium trend are as follows: refrigerated medium pump-evaporator-triple valve-heat pipe condenser-low pressure receiver
Device-refrigerated medium pump.
Preferably,
When outdoor temperature meets Tb+ Δ T1 >=T >=Tb- Δ T1, maintain existing operational mode constant；
When outdoor temperature meets T >=Tb+ Δ T1, and maintains the Δ t time, then refrigeration mode operation is switched to；
When outdoor temperature meets T≤Tb- Δ T1, and maintains the Δ t time, then composite mode operation is switched to；
When outdoor temperature meets Ta+ Δ T1 >=T >=Ta- Δ T1, maintain existing operational mode constant；
When outdoor temperature meets T >=Ta+ Δ T1, and maintains the Δ t time, then composite mode operation is switched to；
When outdoor temperature meets T≤Ta- Δ T1, and maintains the Δ t time, then heat pipe mode operation is switched to.
Preferably, air-conditioning system exports accurate adjust as system cooling capacity by control low-pressure oil storage internal working medium temperature T0
Control parameter, setting control low-pressure oil storage internal working medium temperature T1；
In cooling mode, when low-pressure oil storage internal working medium temperature meets T1- Δ T2≤T0≤T1+ Δ T2, maintenance pressure
Contracting machine runs quantity and the aperture of throttling set is constant；When if low-pressure oil storage internal working medium temperature meets T0 < T1- Δ T2, drop
Low compressor rotary speed reduces compressor operation quantity, tunes up throttling set aperture；If meeting T0 > T1+ Δ T2, compression is promoted
Machine revolving speed increases compressor operation quantity, reduces throttling set aperture；
Under composite mode, if there are refrigeration compressor operation, all outdoor combined type refrigerants in air-conditioning system in outside
The blower high-speed cruising of system, the heat release first in heat pipe condenser, after uncooled gaseous refrigerant enters low-pressure oil storage
It is sucked by compressor, low-pressure oil storage is flowed by compression condensation-throttling again；Its regulative mode are as follows: inside low-pressure oil storage
Temperature of Working meets T1- Δ T2≤T0≤T1+ Δ T2, maintains the aperture of compressor operation quantity and throttling set constant；When low
If pressure liquid storage device internal working medium temperature meets T0 < T1- Δ T2, reduces compressor rotary speed or reduce compressor running quantity, tune up
Throttling set aperture；If meeting T0 > T1+ Δ T2, promotes compressor rotary speed or increase compressor operation quantity, reduce throttling dress
Set aperture；
Under heat pipe mode, it can realize that the output of system cooling capacity is adjusted for flow quantity by adjusting rotation speed of fan or system,
If maintaining rotation speed of fan and refrigerated medium pump flow when low-pressure oil storage internal working medium temperature meets T1- Δ T2≤T0≤T1+ Δ T2
It is constant；Preferential defeated by reducing rotation speed of fan reduction cooling capacity when if low-pressure oil storage internal working medium temperature meets T0 < T1- Δ T2
Out or throttling set aperture is adjusted to reduce the output of refrigerated medium pump flow, if continuing to reduce, cuts off one of blower；If meeting
T0 > T1+ Δ T2 is first passed through to promote rotation speed of fan increase cooling capacity output or adjust flow valve opening and is improved refrigerated medium pump flow
Output；Wherein using first opening, the method for operation on duty by turns first stopped works.
When preferably, under refrigeration mode and composite mode, sets compressor cycle of operation T2 or compressor oil level passes
Sensor, when accumulated running time reaches T2 or oil level is relatively low, control throttling set aperture is tuned up, and makes system inside low-pressure oil storage
Cryogen liquid level covers liquid level line, and the rich oil refrigerant on upper layer enters oil catcher by the oil outlet of low-pressure oil storage, with refrigeration certainly
The high temperature coil heat exchange that condenser comes out, wherein liquid refrigerant flashes to gaseous refrigerant and is sucked by compressor, and lubricating oil is then
Oil catcher bottom is flowed into, and compressor is flowed back to by gravity or differential pressure action.
A kind of multi-joint compound air-conditioning system, including at least two compressors in parallel, oil eliminator, refrigerant condenser,
Throttling set, low-pressure oil storage, refrigerated medium pump, at least two evaporator, heat pipe condenser and oil catchers in parallel, wherein
The entrance of the oil eliminator is connected with the exhaust outlet of each compressor, and the oil return opening of oil eliminator passes through capillary
It is connected to the gas returning port of compressor；
The entrance of the refrigerant condenser is connected with the outlet of oil eliminator；
The oil catcher is equipped with oil inlet, oil-collecting gas returning port, oil return opening, backheat import, backheat outlet and reheat coils；It returns
Hot import is exported with backheat and is connected to by reheat coils；
The low-pressure oil storage is equipped with air inlet, liquid storage gas returning port, inlet and supply opening, sets in the middle part of the liquid storage device
There are liquid level line and oil outlet；
The oil inlet is connected to the oil outlet；The oil-collecting gas returning port is connected to the gas returning port of compressor；Described time
Hydraulic fluid port is connected to the gas returning port of compressor；The outlet of the backheat import and refrigerant condenser；The backheat outlet passes through
Throttling set is connected to the inlet；
The liquid storage gas returning port is connected with the gas returning port of compressor, and the supply opening is connected with the entrance of refrigerated medium pump
Logical, the outlet of refrigerated medium pump is connected with the entrance of evaporator；Flow valve is arranged in the entrance of each evaporator；Each evaporator always goes out
Mouth setting refrigeration valve and heat pipe valve in parallel；
Heat pipe valve is connected to the air inlet by heat pipe condenser；
Refrigeration valve is connected to the air inlet.
The beneficial effects of the present invention are: the present invention is according to outdoor environment temperature by controlling the triple valve and the pressure
The operating status of contracting machine and blower changes the circulation path of heat transferring medium within air-conditioning systems, and then controls air-conditioning system
Operating mode, so that product can be worked according to outdoor environment temperature by adjusting air-conditioning system under different working modes to fill
Divide using the cold source in outdoor environment, thus the premise being adapted in the cooling capacity output for meeting compound air-conditioning system with thermic load
Under, reduce compound air-conditioning system because generating power consumed by cooling capacity, maximally utilize round the clock, transition season and winter
Natural cooling source, significantly energy-saving and emission-reduction.
Detailed description of the invention
Fig. 1 is the structure chart of computer room compound air-conditioning system of the invention；
Fig. 2 is the structure chart of oil catcher in the present invention；
Fig. 3 is the structure chart of mesolow liquid storage device of the present invention；
Fig. 4 is the structure chart of multi-joint compound air-conditioning system of the invention；
Fig. 5 is the pressure-enthalpy chart of refrigeration mode in the present invention；
Fig. 6 is the structure chart of refrigeration mode in the present invention；
Fig. 7 is the pressure-enthalpy chart of composite mode in the present invention；
Fig. 8 is the structure chart of composite mode in the present invention；
Fig. 9 is the pressure-enthalpy chart of heat pipe mode in the present invention；
Figure 10 is the structure chart of heat pipe mode in the present invention；
Figure 11 is system energy consumption analysis chart in the present invention.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings.
It is gone back at present about the computer-room air conditioning system coupled using power type separate heat pipe with vapour compression refrigeration system
It has been proposed that, not it has been proposed that widen heat pipe operation temperature area in spring, autumn transition season, deficiency was not condensed according to heat pipe yet
Place's refrigeration on demand, while various pattern switchings are in outside, and cooling capacity output in end remains steady.
Please refer to Fig. 1-Fig. 3, computer room compound air-conditioning system of the invention, including compressor 1, oil eliminator 2, refrigeration
Condenser 3, throttling set 4, low-pressure oil storage 5, refrigerated medium pump 6, evaporator 7, heat pipe condenser 9 and oil catcher 10.
The entrance of oil eliminator 2 is connected with the exhaust outlet of compressor 1, and the oil return opening of oil eliminator 2 is connected by capillary
It is connected to the gas returning port of compressor 1；The entrance of refrigerant condenser 3 is connected with the outlet of oil eliminator 2.
The oil catcher 10 goes out equipped with oil inlet 103, oil-collecting gas returning port 104, oil return opening 105, backheat import 101, backheat
Mouth 102 and reheat coils 106；Backheat import 101 is connected to backheat outlet 102 by reheat coils 106；Low-pressure oil storage 5 is set
There are air inlet 53, liquid storage gas returning port 54, inlet 51 and supply opening 52, the middle part of the liquid storage device is equipped with liquid level line 56 and goes out
Hydraulic fluid port 55.
Oil inlet 103 is connected to the oil outlet 55；The oil-collecting gas returning port 104 is connected to the gas returning port of compressor 1；Institute
Oil return opening 105 is stated to be connected to the gas returning port of compressor 1；The outlet of the backheat import 101 and refrigerant condenser 3；It is described
Backheat outlet 102 is connected to the inlet 51 by throttling set 4；Liquid storage gas returning port 54 is connected with the gas returning port of compressor 1,
The supply opening 52 is connected with the entrance of refrigerated medium pump 6, and the outlet of refrigerated medium pump 6 is connected with the entrance of evaporator 7；It is described
The second end of the first end of the outlet triple valve 8 of evaporator 7, triple valve 8 is connected to the air inlet 53；The of triple valve 8
Three ends are connected to the air inlet 53 by heat pipe condenser 9.
Throttling set 4 specifically can be electric expansion valve or capillary etc..6 both ends of refrigerated medium pump are parallel with by-passing valve,
To adjust the refrigerant flow being sent into indoor module；If the refrigerated medium pump 6 is variable frequency pump, the by-passing valve can be taken
Disappear.
Refrigerant condenser 3 and heat pipe condenser 9 are all made of parallel-flow heat exchanger or finned heat exchanger, and flat in face of wind direction
Side by side, heat pipe condenser 9 is located at inlet air side to row, refrigerant condenser 3 is located at air side.
Can by increasing temperature control device, temperature control device respectively with triple valve 8, heat pipe condenser 9 and refrigerant condenser 3
Blower and compressor 1 connect, the environment temperature outside the temperature control device sensing chamber, and control the threeway according to environment temperature
The operating status of valve 8, blower and compressor 1；The temperature control device is connect with low-pressure oil storage 5, for detecting the low pressure storage
5 internal refrigeration storage agent temperature of liquid device, and by refrigerant temperature compared with setting value, control compressor 1, blower and throttling set 4
Operating status.
When indoor module is more, outdoor unit insufficient space or initial investment cost limitation etc. conditions when, can be used multi-joint
Formula combined precision air-conditioning system, by refrigerated medium pump 6, general piping for liquids and return-air general pipeline between outdoor module and indoor module structure
At closed circulation system, multiple composite air conditioner system is indoor by one or more combined air conditioner outdoor modules and one or more
The multi-joint mode of module composition.
Referring to Fig. 4, multi-joint compound air-conditioning system, including at least two compressors 1 in parallel, oil eliminator 2, refrigeration
Condenser 3, throttling set 4, low-pressure oil storage 5, refrigerated medium pump 6, at least two evaporator 7 in parallel, heat pipe condenser 9 and collection
Oily device 10.Remove triple valve 8, the outlet of refrigerated medium pump 6 is connected with the entrance of evaporator 7；Stream is arranged in the entrance of each evaporator 7
Valve is measured, wherein flow control valve is ratio adjusting valve, by adjusting the aperture of flow valve, to control the liquid supply rate of evaporator 7
And its degree of superheat of outlet, realize each end accurate flow adjustment.The general export setting of each evaporator 7 12 He of refrigeration valve in parallel
Heat pipe valve 11；Heat pipe valve 11 is connected to the air inlet 53 by heat pipe condenser 9；Refrigeration valve 12 is connected to the air inlet 53.Its
His structure is consistent with compound air-conditioning system shown in Fig. 1.Multi-joint composite air conditioner system method: for combined air conditioners all in system
Outdoor module, using first opening, the method for operation on duty by turns first stopped works；It is same using first for compressors all in system
It opens, the method for operation on duty by turns first stopped works.
Wide circumstance temperature band is decomposed into refrigeration area, recombination region and heat pipe area by the control method of computer room compound air-conditioning system
Three functional areas, in air-conditioner set the control mode of cold source system be for different functional areas, it is corresponding to switch cold source system fortune
Row refrigeration cycle, combined-circulation and heat pipe circulating working mode, in which:
As outdoor environment temperature T > set temperature Tb (such as summer), the refrigeration mode corresponding to refrigeration area is: threeway
Valve 8 switches to refrigerating circuit, heat transferring medium trend are as follows: compressor 1- oil eliminator 2- refrigerant condenser 3- oil catcher 10- throttling
Device 4- low-pressure oil storage 5- compressor 1 and refrigerated medium pump 6- evaporator 7- triple valve 8- low-pressure oil storage 5- refrigerated medium pump
6, cooling capacity is provided by refrigeration cycle for end.Liquid refrigerant after wherein throttling is stored in 5 bottom of low-pressure oil storage, passes through
The power of refrigerated medium pump 6, which acts on, is delivered to end evaporator 7, and gaseous state or gas-liquid mixture phase after the evaporation endothermic of end
Refrigerant enters low-pressure oil storage 5 by the channel of triple valve 8, is sucked together with the gaseous refrigerant after throttling by compressor 1
It is compressed, condenses heat release in refrigerant condenser 3, entered back into the throttling of throttling set 4 and enter in low-pressure oil storage 5, so complete
Refrigeration cycle mode.Due to outdoor environment temperature height, so that the thermic load amount of air-conditioning system is larger, therefore temperature control device in this programme
Controlling compound air precision air conditioning system and carrying out aforementioned middle conventional compressor loop process of refrigerastion is expired with generating enough cooling capacity
The thermic load of the compound air precision air conditioning system of foot, while being acted on by refrigerated medium pump transportation power, so that the safety such as system oil return
Reliably.Its pressure-enthalpy chart and circulating circuit figure are as shown in Figure 5, Figure 6.In Fig. 5, (4b, 1) -2 indicates compressor compresses process, 2-3
Indicate condenser condensation process, 3-4 indicates throttling process, and 4a-4-4b indicates gas-liquid separation process inside low-pressure oil storage, 4a-5
It indicates to pass through refrigerated medium pump dynamic transport process, 5-1 indicates end evaporation endothermic process.
Composite mode when outdoor environment temperature meets Ta≤T≤Tb (such as autumn, spring), corresponding to recombination region
Be: triple valve 8 switches to heat pipe circuit, the trend of heat transferring medium are as follows: compressor 1- oil eliminator 2- refrigerant condenser 3- oil-collecting
Device 10- throttling set 4- low-pressure oil storage 5- compressor 1 and refrigerated medium pump 6- evaporator 7- triple valve 8- heat pipe condenser 9-
Low-pressure oil storage 5- refrigerated medium pump 6.Wherein hot-pipe system is operated at full capacity, and refrigeration system works in right amount.Under the mode, by evaporating
Device 7, triple valve 8, heat pipe condenser 9, low-pressure oil storage 5 and refrigerated medium pump 6 constitute hot-pipe system and operate at full capacity, and compress
The refrigeration system that machine 1, oil eliminator 2, refrigerant condenser 3, throttling set 4, low-pressure oil storage 5 are constituted according to specific circumstance temperature and
End load size is suitably run.The gaseous state or gas-liquid mixed state cold-producing medium come out from end evaporator 7 enters by triple valve 8
Heat pipe condenser 9 carries out partial condensation, enters low-pressure oil storage 5 later, wherein gaseous refrigerant and the gaseous refrigerant after throttling
Agent is sucked by compressor 1 together, condenses heat release by refrigerant condenser 3, is entered back into the throttling of throttling set 4 and is entered low-pressure oil storage
In 5, liquid refrigerant is delivered to end evaporator 7 by the effect of refrigerated medium pump 6 again and is evaporated suction in low-pressure oil storage 5
Heat, so completion combined-circulation.Its pressure-enthalpy chart and circulating circuit figure are as shown in Figure 7, Figure 8.In Fig. 7, (4b, 6b, 1) -2 is indicated
Compressor compresses process, 2-3 indicate condenser condensation process, and 3-4 indicates throttling process, and 4a-4-4b is indicated in low-pressure oil storage
Portion's gas-liquid separation process, 4a-5 indicate to pass through refrigerated medium pump dynamic transport process, 5-1 expression end evaporation endothermic process, 1-6 table
Show heat pipe condenser condensation process, wherein 6a-6-6b indicates entry into low-pressure oil storage gas-liquid separation process.Due to outdoor environment temperature
Spend lower, therefore temperature control device is controlled compound air precision air conditioning system and preferentially radiated using hot-pipe system in this programme, insufficient section
It is compensated by compression refrigerating system, according to law of conservation of energy, the gaseous state or gas-liquid mixed that are flowed out in this programme from indoor evaporator
The refrigerant of state first passes through heat pipe condenser and cools down, and not condensed gaseous refrigerant is compressed by compressor sucking again
Refrigeration cycle realizes condensation, thus the premise being adapted in the cooling capacity output for meeting compound air precision air conditioning system with thermic load
Under, compound air precision air conditioning system is reduced because generating power consumed by cooling capacity, and then realizes compound precision air conditioner system
The energy-saving and emission-reduction of system.It is acted on simultaneously by refrigerated medium pump transportation power, so that system oil return etc. is safe and reliable.
As outdoor environment temperature T < preset temperature Ta (such as winter), the heat pipe mode corresponding to heat pipe area is: refrigeration
System stalls, triple valve 8 switch to heat pipe circuit, heat transferring medium trend are as follows: refrigerated medium pump 6- evaporator 7- triple valve 8-
Heat pipe condenser 9- low-pressure oil storage 5- refrigerated medium pump 6.The exchange capability of heat and rotation speed of fan for controlling heat exchange of heat pipe make heat pipe system
The refrigeratory capacity of system matches with end thermic load.Tb > Ta.The gaseous state or gas-liquid mixed state cold-producing medium come out from end evaporator 7
It is condensed by triple valve 8 by entering heat pipe condenser 9, enters low-pressure oil storage 5, liquid in low-pressure oil storage 5 later
Refrigerant is delivered to end evaporator 7 by the effect of refrigerated medium pump 6 again and is evaporated heat absorption, so completes heat pipe circulation.Its
Pressure-enthalpy chart and circulating circuit figure following Fig. 9 and Figure 10.In Fig. 9,1-2 indicates that refrigerated medium pump dynamic transport process, 2-3 indicate to steam
Hair process, 3-1 indicate refrigerant condensation process in heat pipe condenser.
Since outdoor environment temperature is far below computer room temperature, and sufficient cooling capacity can be provided to computer room so as to tie up in computer room
Suitable temperature is held, therefore makes to condense from the indoor evaporator gaseous state flowed out or the refrigerant of gas-liquid mixed state in heat pipe in this programme
Cold source in device and outdoor environment carries out heat exchange, to reduce the temperature of heat transferring medium, and makes the heat transferring medium after cooling again
It enters the room in evaporator and cools down to computer room, to be greatly reduced under the premise of meeting refrigeration demand in computer room
The energy consumption of compound air precision air conditioning system.
Air-conditioning system is by acquiring outdoor environment temperature T as system model switching control parameter, when system model switches
It is switched over using temperature gap method and delay control method, detailed process is as follows:
When outdoor temperature meets Tb+ Δ T1 >=T >=Tb- Δ T1, maintain existing operational mode constant；
When outdoor temperature meets T >=Tb+ Δ T1, and maintains the Δ t time, then refrigeration mode operation is switched to；
When outdoor temperature meets T≤Tb- Δ T1, and maintains the Δ t time, then composite mode operation is switched to；
When outdoor temperature meets Ta+ Δ T1 >=T >=Ta- Δ T1, maintain existing operational mode constant；
When outdoor temperature meets T >=Ta+ Δ T1, and maintains the Δ t time, then composite mode operation is switched to；
When outdoor temperature meets T≤Ta- Δ T1, and maintains the Δ t time, then heat pipe mode operation is switched to.
Air-conditioning system exports accuracy controlling ginseng as system cooling capacity by control 5 internal working medium temperature T0 of low-pressure oil storage
Number, setting control 5 internal working medium temperature T1 of low-pressure oil storage；
In cooling mode, when 5 internal working medium temperature of low-pressure oil storage meets T1- Δ T2≤T0≤T1+ Δ T2, maintenance pressure
Contracting machine 1 runs quantity and the aperture of throttling set 4 is constant；When if 5 internal working medium temperature of low-pressure oil storage meets T0 < T1- Δ
T2 reduces compressor (1) revolving speed or reduces compressor 1 running quantity, tunes up 4 aperture of throttling set；If meeting T0 > T1+ Δ
T2 promotes 1 revolving speed of compressor or increases the operation quantity of compressor 1, reduces 4 aperture of throttling set；
Under composite mode, cooling capacity, the operation platform that insufficient cooling capacity passes through control refrigeration compressor preferentially are provided using heat pipe
Several or compressor rotary speed is supplemented；If there are refrigeration compressor operation, all outdoor combined type systems in air-conditioning system in outside
The blower high-speed cruising of cooling system, the first heat release in heat pipe condenser 9, uncooled gaseous refrigerant enter low-pressure oil storage
It is sucked after 5 by compressor 1, low-pressure oil storage 5 is flowed by compression condensation-throttling again；Its regulative mode are as follows: work as low pressure receiver
5 internal working medium temperature of device meets T1- Δ T2≤T0≤T1+ Δ T2, and compressor 1 is maintained to run the aperture of quantity and throttling set 4
It is constant；If reducing by 1 revolving speed of compressor when 5 internal working medium temperature of low-pressure oil storage meets T0 < T1- Δ T2 or reducing compressor 1
Quantity is run, 4 aperture of throttling set is tuned up；If meeting T0 > T1+ Δ T2, promotes 1 revolving speed of compressor or increase the operation of compressor 1
Quantity reduces 4 aperture of throttling set；
Under heat pipe mode, it can realize that the output of system cooling capacity is adjusted for flow quantity by adjusting rotation speed of fan or system,
If maintaining rotation speed of fan and refrigerated medium pump 6 to flow when 5 internal working medium temperature of low-pressure oil storage meets T1- Δ T2≤T0≤T1+ Δ T2
It measures constant；Preferential cold by reducing rotation speed of fan reduction when if 5 internal working medium temperature of low-pressure oil storage meets T0 < T1- Δ T2
Amount output adjusts 4 aperture of throttling set to reduce the output of 6 flow of refrigerated medium pump, if continuing to reduce, cuts off one of blower；
If meeting T0 > T1+ Δ T2, first passes through to promote rotation speed of fan increase cooling capacity output or adjust flow valve opening and improve refrigerant
Pump the output of 6 flows；Wherein using first opening, the method for operation on duty by turns first stopped works.
As shown in figure 11, abscissa indicates that outdoor environment temperature, i.e. environment temperature locating for outdoor unit, ordinate indicate
Computer room load and energy consumption, wherein computer room load is in certain and increases state as outdoor environment temperature increases.When environment temperature is low
When Ta, system is in heat pipe mode, and circumstance temperature is that system runs composite mode between Ta and Tb, when circumstance temperature is higher than Tb,
System runs refrigeration mode, and energy consumption is as shown in bold portion combined air conditioner energy consumption in figure, and conventional air conditioning system energy consumption is as schemed
Shown in middle dotted line.
System oil return mode is described below:
When under refrigeration mode and composite mode, compressor cycle of operation T2 or compressor oil level sensor are set, when
When accumulated running time reaches T2 or relatively low oil level, control 4 aperture of throttling set is tuned up, and makes 5 internal refrigeration storage agent of low-pressure oil storage
Liquid level covers liquid level line 56, and the rich oil refrigerant on upper layer enters oil catcher 10 by the oil outlet 55 of low-pressure oil storage 5, with self-control
The high temperature coil heat exchange that cool condenser 3 comes out, wherein liquid refrigerant flashes to gaseous refrigerant and is sucked by compressor 1, lubrication
It is oily then flow into 10 bottom of oil catcher, and compressor 1 is flowed back to by gravity or differential pressure action.
Pressure difference circuit: when air-conditioning system is operated under refrigeration mode and composite mode, setting compressor operation week
Phase T2 or compressor oil level sensor control 4 aperture tune of throttling set when accumulated running time reaches T2 or oil level is relatively low
Greatly, so that 5 internal refrigeration storage agent liquid level of low-pressure oil storage is covered liquid level line 56, open the first oil return valve, the rich oil refrigeration on upper layer at this time
Agent enters oil catcher 10 by the oil outlet of low-pressure oil storage 5, the first oil return valve is closed after liquid level is reduced to liquid level line, then beat
The second oil return valve is opened, oil return is completed.
Operating analysis explanation is carried out for 24 DEG C of computer rooms of constant temperature, can be predicted: when 20 DEG C of outside air temperature >, air-conditioning
System operates in vapor compression refrigeration area；When 10 DEG C≤outside air temperature≤20 DEG C, air-conditioning system may operate in compound system
Cold workspace；Since the usual workload of computer system is in 40~60% ranges, the operation rule of compound-refrigerating workspace is:
Oepration at full load is air-cooled to maximally utilize natural cooling source room to realize；The refrigerating capacity caused by the heat pipe condenser is greater than or equal to
When thermic load or when outside air temperature≤10 DEG C, compressor stops working, and natural cooling source is fully utilized in air-conditioning system, realizes
Air-conditioning system low energy consumption operation.Control 4 T1=16 DEG C of inner refrigerant temperature sensor of low-pressure oil storage, T1=2 DEG C of Δ, Δ T2=
2℃。
Above embodiments are used for illustrative purposes only, rather than limitation of the present invention, the technology people in relation to technical field
Member, without departing from the spirit and scope of the present invention, can also make various transformation or modification, therefore all equivalent
Technical solution also should belong to scope of the invention, should be limited by each claim.
Claims (10)
1. a kind of computer room compound air-conditioning system, which is characterized in that including compressor (1), oil eliminator (2), refrigeration condensation
Device (3), throttling set (4), low-pressure oil storage (5), refrigerated medium pump (6), evaporator (7), heat pipe condenser (9) and oil catcher
(10), wherein
The entrance of the oil eliminator (2) is connected with the exhaust outlet of compressor (1), and the oil return opening of oil eliminator (2) passes through hair
Tubule is connected to the gas returning port of compressor (1)；
The entrance of the refrigerant condenser (3) is connected with the outlet of oil eliminator (2)；
The oil catcher (10) be equipped with oil inlet (103), oil-collecting gas returning port (104), oil return opening (105), backheat import (101),
Backheat exports (102) and reheat coils (106)；Backheat import (101) and backheat outlet (102) are connected by reheat coils (106)
It is logical；
The low-pressure oil storage (5) is equipped with air inlet (53), liquid storage gas returning port (54), inlet (51) and supply opening (52), institute
The middle part for stating liquid storage device is equipped with liquid level line (56) and oil outlet (55)；
The oil inlet (103) is connected to the oil outlet (55)；The return-air of the oil-collecting gas returning port (104) and compressor (1)
Mouth connection；The oil return opening (105) is connected to the gas returning port of compressor (1)；The backheat import (101) and refrigerant condenser
(3) outlet；The backheat outlet (102) is connected to the inlet (51) by throttling set (4)；
The liquid storage gas returning port (54) is connected with the gas returning port of compressor (1), the supply opening (52) and refrigerated medium pump (6)
Entrance is connected, and the outlet of refrigerated medium pump (6) is connected with the entrance of evaporator (7)；
The second end of the first end of the outlet triple valve (8) of the evaporator (7), triple valve (8) is connected to the air inlet
(53)；The third end of triple valve (8) is connected to the air inlet (53) by heat pipe condenser (9)；
The heat pipe condenser (9) and refrigerant condenser (3) include blower.
2. computer room compound air-conditioning system according to claim 1, which is characterized in that the refrigerated medium pump (6) is to become
Frequency pumps.
3. computer room compound air-conditioning system according to claim 1, which is characterized in that the two of the refrigerated medium pump (6)
End is parallel with by-passing valve.
4. computer room compound air-conditioning system according to claim 1, which is characterized in that the refrigerant condenser (3) and
Heat pipe condenser (9) is all made of parallel-flow heat exchanger or finned heat exchanger, and in face of wind direction parallel side-by-side, heat pipe condenser
(9) it is located at inlet air side, refrigerant condenser (3) is located at air side.
5. computer room compound air-conditioning system according to claim 1, which is characterized in that it further include temperature control device,
The temperature control device blower and pressure with the triple valve (8), heat pipe condenser (9) and refrigerant condenser (3) respectively
Contracting machine (1) connects, the environment temperature outside the temperature control device sensing chamber, and controls the triple valve (8), wind according to environment temperature
The operating status of machine and compressor (1)；
The temperature control device is connect with low-pressure oil storage (5), for detecting the low-pressure oil storage (5) internal refrigeration storage agent temperature,
And by refrigerant temperature compared with setting value, the operating status of compressor (1), blower and throttling set (4) is controlled.
6. a kind of control method of computer room compound air-conditioning system as described in claim 1, which is characterized in that by wide circumstance temperature band
Refrigeration area, recombination region and three, heat pipe area functional areas are decomposed into,
As outdoor environment temperature T > Tb, the refrigeration mode corresponding to refrigeration area is: triple valve (8) switches to refrigerating circuit,
Heat transferring medium trend are as follows: compressor (1)-oil eliminator (2)-refrigerant condenser (3)-oil catcher (10)-throttling set (4)-is low
Press liquid storage device (5)-compressor (1) and refrigerated medium pump (6)-evaporator (7)-triple valve (8)-low-pressure oil storage (5)-refrigeration
Agent pumps (6)；
When outdoor environment temperature meets Ta≤T≤Tb, the composite mode corresponding to recombination region is: triple valve (8) is switched to
Heat pipe circuit, the trend of heat transferring medium are as follows: compressor (1)-oil eliminator (2)-refrigerant condenser (3)-oil catcher (10)-throttling
Device (4)-low-pressure oil storage (5)-compressor (1) and refrigerated medium pump (6)-evaporator (7)-triple valve (8)-heat pipe condensation
Device (9)-low-pressure oil storage (5)-refrigerated medium pump (6)；Wherein hot-pipe system is operated at full capacity, and refrigeration system works in right amount；
As outdoor environment temperature T < Ta, the heat pipe mode corresponding to heat pipe area is: refrigeration system stops working, triple valve
(8) heat pipe circuit, heat transferring medium trend are as follows: refrigerated medium pump (6)-evaporator (7)-triple valve (8)-heat pipe condenser are switched to
(9)-low-pressure oil storage (5)-refrigerated medium pump (6).
7. control method according to claim 6, which is characterized in that
When outdoor temperature meets Tb+ Δ T1 >=T >=Tb- Δ T1, maintain existing operational mode constant；
When outdoor temperature meets T >=Tb+ Δ T1, and maintains the Δ t time, then refrigeration mode operation is switched to；
When outdoor temperature meets T≤Tb- Δ T1, and maintains the Δ t time, then composite mode operation is switched to；
When outdoor temperature meets Ta+ Δ T1 >=T >=Ta- Δ T1, maintain existing operational mode constant；
When outdoor temperature meets T >=Ta+ Δ T1, and maintains the Δ t time, then composite mode operation is switched to；
When outdoor temperature meets T≤Ta- Δ T1, and maintains the Δ t time, then heat pipe mode operation is switched to.
8. control method according to claim 6, which is characterized in that air-conditioning system passes through in control low-pressure oil storage (5)
Portion Temperature of Working T0 exports accuracy controlling parameter, setting control low-pressure oil storage (5) internal working medium temperature T1 as system cooling capacity；
In cooling mode, when low-pressure oil storage (5) internal working medium temperature meets T1- Δ T2≤T0≤T1+ Δ T2, maintenance compression
Machine (1) runs quantity and the aperture of throttling set (4) is constant；When low-pressure oil storage (5) if internal working medium temperature meets T0 < T1-
Δ T2 reduces compressor (1) revolving speed or reduces compressor (1) running quantity, tunes up throttling set (4) aperture；If meeting T0 >
T1+ Δ T2 promotes compressor (1) revolving speed or increases compressor (1) operation quantity, reduces throttling set (4) aperture；
Under composite mode, if there are refrigeration compressor operation, all outdoor combined refrigeration systems in air-conditioning system in outside
Blower high-speed cruising, the heat release in heat pipe condenser (9) first, uncooled gaseous refrigerant enters low-pressure oil storage (5)
It is sucked afterwards by compressor (1), low-pressure oil storage (5) is flowed by compression condensation-throttling again；Its regulative mode are as follows: when low pressure is stored up
Liquid device (5) internal working medium temperature meets T1- Δ T2≤T0≤T1+ Δ T2, maintains compressor (1) operation quantity and throttling set
(4) aperture is constant；When low-pressure oil storage (5) if internal working medium temperature meets T0 < T1- Δ T2, compressor (1) revolving speed is reduced
Or reduce compressor (1) and run quantity, tune up throttling set (4) aperture；If meeting T0 > T1+ Δ T2, promotes compressor (1) and turn
Speed increases compressor (1) operation quantity, reduces throttling set (4) aperture；
Under heat pipe mode, it can realize that the output of system cooling capacity is adjusted for flow quantity by adjusting rotation speed of fan or system, when low
Pressure liquid storage device (5) maintains rotation speed of fan and refrigerated medium pump (6) stream if internal working medium temperature meets T1- Δ T2≤T0≤T1+ Δ T2
It measures constant；It is preferential to be reduced by reducing rotation speed of fan when low-pressure oil storage (5) if internal working medium temperature meets T0 < T1- Δ T2
Cooling capacity output adjusts throttling set (4) aperture to reduce the output of refrigerated medium pump (6) flow, if continuing to reduce, cuts off wherein one
A blower；If meeting T0 > T1+ Δ T2, first passes through to promote rotation speed of fan increase cooling capacity output or adjust flow valve opening and improve
The output of refrigerated medium pump (6) flow；Wherein using first opening, the method for operation on duty by turns first stopped works.
9. control method according to claim 6, which is characterized in that when under refrigeration mode and composite mode, setting
Compressor cycle of operation T2 or compressor oil level sensor, when accumulated running time reaches T2 or oil level is relatively low, control throttling
Device (4) aperture tunes up, and covers low-pressure oil storage (5) internal refrigeration storage agent liquid level liquid level line (56), the rich oil refrigerant on upper layer
Enter oil catcher (10) by the oil outlet (55) of low-pressure oil storage (5), is changed with the high temperature coil pipe come out from refrigerant condenser (3)
Heat, wherein liquid refrigerant flashes to gaseous refrigerant and is sucked by compressor (1), and lubricating oil then flows into oil catcher (10) bottom,
And compressor (1) is flowed back to by gravity or differential pressure action.
10. a kind of multi-joint compound air-conditioning system, which is characterized in that including at least two compressors (1) in parallel, oil eliminator
(2), refrigerant condenser (3), throttling set (4), low-pressure oil storage (5), refrigerated medium pump (6), at least two evaporators in parallel
(7), heat pipe condenser (9) and oil catcher (10), wherein
The entrance of the oil eliminator (2) is connected with the exhaust outlet of each compressor (1), and the oil return opening of oil eliminator (2) passes through
Capillary is connected to the gas returning port of compressor (1)；
The entrance of the refrigerant condenser (3) is connected with the outlet of oil eliminator (2)；
The oil catcher (10) be equipped with oil inlet (103), oil-collecting gas returning port (104), oil return opening (105), backheat import (101),
Backheat exports (102) and reheat coils (106)；Backheat import (101) and backheat outlet (102) are connected by reheat coils (106)
It is logical；
The low-pressure oil storage (5) is equipped with air inlet (53), liquid storage gas returning port (54), inlet (51) and supply opening (52), institute
The middle part for stating liquid storage device is equipped with liquid level line (56) and oil outlet (55)；
The oil inlet (103) is connected to the oil outlet (55)；The return-air of the oil-collecting gas returning port (104) and compressor (1)
Mouth connection；The oil return opening (105) is connected to the gas returning port of compressor (1)；The backheat import (101) and refrigerant condenser
(3) outlet；The backheat outlet (102) is connected to the inlet (51) by throttling set (4)；
The liquid storage gas returning port (54) is connected with the gas returning port of compressor (1), the supply opening (52) and refrigerated medium pump (6)
Entrance is connected, and the outlet of refrigerated medium pump (6) is connected with the entrance of evaporator (7)；Flow is arranged in the entrance of each evaporator (7)
Valve；The general export setting of each evaporator (7) refrigeration valve (12) and heat pipe valve (11) in parallel；
Heat pipe valve (11) is connected to the air inlet (53) by heat pipe condenser (9)；
Refrigeration valve (12) is connected to the air inlet (53).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811133836.3A CN109114718A (en) | 2018-09-27 | 2018-09-27 | Computer room compound air-conditioning system and its control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811133836.3A CN109114718A (en) | 2018-09-27 | 2018-09-27 | Computer room compound air-conditioning system and its control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109114718A true CN109114718A (en) | 2019-01-01 |
Family
ID=64856794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811133836.3A Pending CN109114718A (en) | 2018-09-27 | 2018-09-27 | Computer room compound air-conditioning system and its control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109114718A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110986187A (en) * | 2019-12-31 | 2020-04-10 | 无锡莱多鑫科技有限公司 | Integrated dual-system refrigerating device |
| CN111609497A (en) * | 2020-05-26 | 2020-09-01 | 深圳市艾特网能技术有限公司 | Control method and control device for natural cooling machine room air conditioner and natural cooling machine room air conditioner |
| CN112082236A (en) * | 2020-09-03 | 2020-12-15 | 珠海格力电器股份有限公司 | Heat exchange system, air conditioner and control method of air conditioner |
| CN113654260A (en) * | 2021-08-02 | 2021-11-16 | 北京京仪自动化装备技术股份有限公司 | Double-circulation temperature control equipment and method for cascade refrigeration system |
| CN114811999A (en) * | 2022-05-24 | 2022-07-29 | 珠海格力电器股份有限公司 | Oil return system of double-mode fluorine pump refrigerating device, control method of oil return system and machine room air conditioner |
| TWI797419B (en) * | 2019-02-25 | 2023-04-01 | 日商Ａｔｓ有限公司 | Refrigerant control system and cooling system |
| CN117553364A (en) * | 2024-01-09 | 2024-02-13 | 深圳中集天达吉荣航空制冷有限公司 | Aircraft ground air conditioning system based on phase change cold accumulation and control method |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000346502A (en) * | 1999-06-02 | 2000-12-15 | Mitsubishi Electric Building Techno Service Co Ltd | Refrigerating device |
| CN1364995A (en) * | 2001-01-10 | 2002-08-21 | 广东科龙电器股份有限公司 | Oil return method and device for refrigeration system |
| JP2005024163A (en) * | 2003-07-02 | 2005-01-27 | Hitachi Industries Co Ltd | Refrigerator unit |
| CN101338961A (en) * | 2008-08-18 | 2009-01-07 | 南京天加空调设备有限公司 | Automatic oil return control method and device for refrigeration system |
| CN202101473U (en) * | 2011-05-30 | 2012-01-04 | 太原市永有制冷设备有限公司 | Automatic oil return system of Freon flooded refrigeration system |
| CN105674448A (en) * | 2016-03-24 | 2016-06-15 | 清华大学 | Heat pipe compounded air-conditioning system and control method thereof |
| CN105910315A (en) * | 2016-06-14 | 2016-08-31 | 安徽省君杰新能源科技有限公司 | Combined air conditioning system for machine room and control method thereof |
| CN205690728U (en) * | 2016-06-14 | 2016-11-16 | 安徽省君杰新能源科技有限公司 | A kind of compound computer-room air conditioning system |
| CN108088012A (en) * | 2018-01-16 | 2018-05-29 | 克莱门特捷联制冷设备(上海)有限公司 | A kind of heat pipe combined type computer-room air conditioning system of frequency conversion and its control method |
| CN207849840U (en) * | 2018-01-20 | 2018-09-11 | 潘仙 | A kind of novel oil catcher |
| CN208901545U (en) * | 2018-09-27 | 2019-05-24 | 克莱门特捷联制冷设备(上海)有限公司 | Computer room compound air-conditioning system |
-
2018
- 2018-09-27 CN CN201811133836.3A patent/CN109114718A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000346502A (en) * | 1999-06-02 | 2000-12-15 | Mitsubishi Electric Building Techno Service Co Ltd | Refrigerating device |
| CN1364995A (en) * | 2001-01-10 | 2002-08-21 | 广东科龙电器股份有限公司 | Oil return method and device for refrigeration system |
| JP2005024163A (en) * | 2003-07-02 | 2005-01-27 | Hitachi Industries Co Ltd | Refrigerator unit |
| CN101338961A (en) * | 2008-08-18 | 2009-01-07 | 南京天加空调设备有限公司 | Automatic oil return control method and device for refrigeration system |
| CN202101473U (en) * | 2011-05-30 | 2012-01-04 | 太原市永有制冷设备有限公司 | Automatic oil return system of Freon flooded refrigeration system |
| CN105674448A (en) * | 2016-03-24 | 2016-06-15 | 清华大学 | Heat pipe compounded air-conditioning system and control method thereof |
| CN105910315A (en) * | 2016-06-14 | 2016-08-31 | 安徽省君杰新能源科技有限公司 | Combined air conditioning system for machine room and control method thereof |
| CN205690728U (en) * | 2016-06-14 | 2016-11-16 | 安徽省君杰新能源科技有限公司 | A kind of compound computer-room air conditioning system |
| CN108088012A (en) * | 2018-01-16 | 2018-05-29 | 克莱门特捷联制冷设备(上海)有限公司 | A kind of heat pipe combined type computer-room air conditioning system of frequency conversion and its control method |
| CN207849840U (en) * | 2018-01-20 | 2018-09-11 | 潘仙 | A kind of novel oil catcher |
| CN208901545U (en) * | 2018-09-27 | 2019-05-24 | 克莱门特捷联制冷设备(上海)有限公司 | Computer room compound air-conditioning system |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI797419B (en) * | 2019-02-25 | 2023-04-01 | 日商Ａｔｓ有限公司 | Refrigerant control system and cooling system |
| US11841177B2 (en) | 2019-02-25 | 2023-12-12 | Ats Japan Co., Ltd. | Refrigerant control system and cooling system |
| CN110986187A (en) * | 2019-12-31 | 2020-04-10 | 无锡莱多鑫科技有限公司 | Integrated dual-system refrigerating device |
| CN111609497A (en) * | 2020-05-26 | 2020-09-01 | 深圳市艾特网能技术有限公司 | Control method and control device for natural cooling machine room air conditioner and natural cooling machine room air conditioner |
| CN111609497B (en) * | 2020-05-26 | 2022-05-03 | 深圳市艾特网能技术有限公司 | Control method and control device for natural cooling machine room air conditioner and natural cooling machine room air conditioner |
| CN112082236A (en) * | 2020-09-03 | 2020-12-15 | 珠海格力电器股份有限公司 | Heat exchange system, air conditioner and control method of air conditioner |
| CN113654260A (en) * | 2021-08-02 | 2021-11-16 | 北京京仪自动化装备技术股份有限公司 | Double-circulation temperature control equipment and method for cascade refrigeration system |
| CN114811999A (en) * | 2022-05-24 | 2022-07-29 | 珠海格力电器股份有限公司 | Oil return system of double-mode fluorine pump refrigerating device, control method of oil return system and machine room air conditioner |
| CN117553364A (en) * | 2024-01-09 | 2024-02-13 | 深圳中集天达吉荣航空制冷有限公司 | Aircraft ground air conditioning system based on phase change cold accumulation and control method |
| CN117553364B (en) * | 2024-01-09 | 2024-04-02 | 深圳中集天达吉荣航空制冷有限公司 | Aircraft ground air conditioning system based on phase change cold accumulation and control method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109114718A (en) | Computer room compound air-conditioning system and its control method | |
| CN105910315B (en) | A kind of control method of compound computer-room air conditioning system | |
| CN205690728U (en) | A kind of compound computer-room air conditioning system | |
| CN104613668B (en) | Combined air-conditioning system and control method thereof | |
| US9243827B2 (en) | Chiller system including an oil separator and ejector connection | |
| CN104807231A (en) | Switchable two-stage cascade energy-saving ultralow-temperature refrigeration system for ship | |
| CN100538208C (en) | A kind of double-temperature refrigerator water/cold wind unit | |
| CN108006870A (en) | A kind of compound computer-room air conditioning system of air pump and its control method | |
| CN108088012A (en) | A kind of heat pipe combined type computer-room air conditioning system of frequency conversion and its control method | |
| CN106871343B (en) | A kind of control method of air-conditioning, device and air-conditioning | |
| CN105004089A (en) | Cascaded unit used for both medium-high temperature cold storage house and low temperature cold storage house | |
| CN206683105U (en) | A kind of compound computer-room air conditioning system of multiple | |
| CN105004088A (en) | Cascaded water chilling unit for dual purposes of intermediate temperature and low temperature | |
| CN209197195U (en) | A kind of small frozen refrigeration unit with twin-stage supercooling and gas pulses defrosting function | |
| CN109357426B (en) | Combined air conditioning system for machine room and control method thereof | |
| CN109114842A (en) | A kind of coupled mode computer-room air conditioning system and its control method | |
| CN207849624U (en) | A kind of compound computer-room air conditioning system of air pump | |
| CN109340960B (en) | Combined air conditioning system of machine room and control method thereof | |
| CN208901545U (en) | Computer room compound air-conditioning system | |
| CN205690576U (en) | A kind of photovoltaic drives combined type computer-room air conditioning system | |
| CN210861760U (en) | Natural cooling refrigerating system | |
| CN202581632U (en) | Heat-pump air conditioning unit of evaporating type condenser | |
| CN109357427B (en) | Combined air conditioning system for machine room and hot water system and control method thereof | |
| CN201964534U (en) | Base station air conditioner and communication base station with same | |
| CN109520163A (en) | A kind of wide warm area small frozen refrigeration unit with fast-pulse defrosting function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |