CN109595841A - Air-conditioning system and its control method - Google Patents
Air-conditioning system and its control method Download PDFInfo
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- CN109595841A CN109595841A CN201710940306.9A CN201710940306A CN109595841A CN 109595841 A CN109595841 A CN 109595841A CN 201710940306 A CN201710940306 A CN 201710940306A CN 109595841 A CN109595841 A CN 109595841A
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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
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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
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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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
- F25B41/00—Fluid-circulation arrangements
- F25B41/40—Fluid line arrangements
-
- 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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The present invention provides a kind of air-conditioning systems, including being sequentially connected in series the throttle valve to form total refrigerant flow, third heat exchanger and compressor, it is connected to the first refrigerant branch of composition closed loop with total refrigerant flow, the second refrigerant branch and control module of composition closed loop are connected to total refrigerant flow；The first refrigerant branch is for freezing, and the second refrigerant branch is for dehumidifying；The control module is used to control the cold medium flux of the first refrigerant branch and the second refrigerant branch, to realize the dehumidifying under different load.Temperature-compensating is obtained when so set, can make by the cold air of evaporator cool-down dehumidification using the condenser added, to not reduce air quantity while realizing dehumidifying, meets the Wind Volume demand in computer room under any operating condition.The present invention also provides a kind of control methods of air-conditioning system, the cold medium flux of the first refrigerant branch and the second refrigerant branch are controlled, to realize the dehumidifying under different load.
Description
Technical field
The present invention relates to air-conditioning technical fields, more particularly to a kind of air-conditioning system and its control method.
Background technique
Air conditioner in machine room is also thermostatic and humidistatic air conditioning unit room special air conditioner, be it is a kind of specialize in that computer room uses to temperature, wet
The highly accurate High Precision Air-conditioning for spending control, not only can control computer room temperature, can also control humidity simultaneously.Nowadays,
The dehumidifying effect of air conditioner in machine room has been increasingly becoming an important technology index in the field.How dehumidifying energy when high load capacity is increased
Power, while still there is dehumidifying effect to have become research hotspot when underload.Air conditioner in machine room is in underload at present, in order to increase
Big moisture removal mainly passes through the following two kinds method and realizes: first is that the method for drop air quantity, i.e., by reducing indoor air quantity, to reduce
Evaporator evaporating temperature achievees the purpose that increase moisture removal when underload.The major defect of this mode is reduction of circulated air
Amount, reduces the rate of ventilation of computer room, is easy to cause the deposition of dust in temperature fluctuation and air, reduce leaving air temp, holds
Computer room temperature fluctuation is easily caused to increase, this is all unfavorable to the operation of server and computer.Second is that passing through control system tune
Big system overheat degree dehumidifies to increase, i.e., reduces the aperture of throttle valve by increasing degree of superheat set point, reduce evaporating temperature
Rapid moisture removal when realizing underload.This mode can make the refrigerant in evaporator be mostly in superheat section, overall effect on moisture extraction
It is bad, also it is easy to cause leaving air temp mixing uneven.
Summary of the invention
Based on above-mentioned, a kind of air-conditioning system that can be realized Smaller load dehumidifying and constant temperature dehumidification is provided.
In addition, also providing a kind of control method of air-conditioning system for meeting Wind Volume and constant temperature dehumidification demand.
A kind of air-conditioning system, including being sequentially connected in series the throttle valve to form total refrigerant flow, third heat exchanger and compressor,
It is connected to the first refrigerant branch of composition closed loop with total refrigerant flow, composition closed loop is connected to total refrigerant flow and is returned
The second refrigerant branch and control module on road；
The first refrigerant branch is for freezing, and the second refrigerant branch is for dehumidifying；
The control module is used to control the cold medium flux of the first refrigerant branch and the second refrigerant branch, to realize not
With the dehumidifying under load.
The first refrigerant branch includes the first flow control valve and first being sequentially connected in series in one of the embodiments,
Heat exchanger, and the refrigerant exit pipe of the first flow control valve is connect with the refrigerant inlet pipe of the first heat exchanger.
The second refrigerant branch includes the second flow control valve and second being sequentially connected in series in one of the embodiments,
Heat exchanger；And the refrigerant exit pipe of the second flow control valve is connect with the refrigerant inlet pipe of the second heat exchanger.
The second heat exchanger and the third heat exchanger are arranged in the same wind field in one of the embodiments,
In, and the upstream of wind field is arranged in the third heat exchanger；The downstream of wind field is arranged in the second heat exchanger.
The air-conditioning system further includes part flow arrangement and current-collecting device, the part flow arrangement in one of the embodiments,
It is arranged on the gas exhaust piping of the compressor, and the general pipeline of the part flow arrangement is connect with the exhaust outlet pipe of the compressor,
First branch pipe is connect with the refrigerant inlet pipe of the first refrigerant branch, the refrigerant of the second branch pipe and the second refrigerant branch into
Mouth pipe connection；
The current-collecting device is arranged on the air inlet pipeline of throttle valve, and the general pipeline of the current-collecting device and the throttle valve
The connection of refrigerant inlet pipe, the first branch pipe connect with the refrigerant exit pipe of the first refrigerant branch, the second branch pipe and described the
The refrigerant exit pipe of two refrigerant branches connects.
It is additionally provided with the first check valve on the refrigerant exit pipe of the first refrigerant branch in one of the embodiments,
Second one-way valve is additionally provided on the refrigerant exit pipe of the second refrigerant branch.
A kind of control method of air-conditioning system, the air-conditioning system include throttle valve, third heat exchanger and compressor according to
The secondary total refrigerant flow being composed in series, be connected to total refrigerant flow composition closed loop the first refrigerant branch, with it is described
The the second refrigerant branch and control module of total refrigerant flow connection composition closed loop；The first refrigerant branch is for making
Cold, the second refrigerant branch is for dehumidifying；The described method includes:
The cold medium flux of the first refrigerant branch and the second refrigerant branch is controlled, to realize the dehumidifying under different load.
In one of the embodiments, the method also includes: judge indoor dehumidifying whether need heat compensation, if
It is that the cold medium flux then adjusted in the second refrigerant branch carries out heat compensation, otherwise, is arranged in the second refrigerant branch
Cold medium flux be zero.
In one of the embodiments, the method also includes: judge whether indoor temperature reaches setting value, if so,
The cold medium flux ratio of the first refrigerant branch and the second refrigerant branch is then adjusted, otherwise, maintains the first refrigerant branch
With the cold medium flux constant rate of the second refrigerant branch.
The cold medium flux ratio for adjusting the first refrigerant branch and the second refrigerant branch in one of the embodiments,
Step includes:
When temperature raising in indoor reaches the first setting value, increases the cold medium flux of the first refrigerant branch, reduce
The cold medium flux of the second refrigerant branch；When temperature decline in indoor reaches the second setting value, reduce first refrigerant
The cold medium flux of branch increases the cold medium flux of the second refrigerant branch；First setting value is greater than the second setting value.
The first refrigerant branch includes the first flow control valve and first being sequentially connected in series in one of the embodiments,
Heat exchanger；The second refrigerant branch includes the second flow control valve being sequentially connected in series and second heat exchanger；Described first
Flow control valve and second flow control valve are used to control the cold medium flux in the first refrigerant branch and the second refrigerant branch；
The first heat exchanger uses the first fan radiating；The second heat exchanger uses the second fan radiating, and the method is also
It include: when judging that the air-conditioning system operation has the dehumidification mode of temperature-compensating, the cold medium flux of the first refrigerant branch is
No is zero, if so, closing first blower or reducing the revolving speed of first blower, otherwise, reduces by first blower
Revolving speed or maintain refrigeration mode under revolving speed it is constant.
In one of the embodiments, the method also includes: setting dehumidification mode under second blower revolving speed with
The revolving speed of second blower is identical under refrigeration mode.
A kind of air-conditioning system and its control method, by one condenser of wind field added downstream of side evaporator indoors,
And when switching to dehumidification mode as high temperature refrigerant flow path, so that by the cold air of evaporator cool-down dehumidification using adding
Condenser when obtain temperature-compensating.By specific logic control, can obtain it is following the utility model has the advantages that
1. not needing the air quantity of reduction unit, any operating condition can meet the requirement of air conditioner in machine room Wind Volume；
2. passing through refrigeration mode, the runing time proportion of dehumidification mode or aperture and outside by flow control valve
The adjusting of rotation speed of fan can be realized indoor constant temperature dehumidification；
3. overcoming by reducing throttle valve opening evaporator superheat section caused by dehumidifying to become larger, effect on moisture extraction is bad,
The drawbacks such as the decline of performance caused by being run with compressor high compression ratio and low reliability；
4. Strong dehumidifying ability is excellent when can be very good to run using high frequency using method of the invention for frequency converter sets
Gesture greatly improves dehumidifying effect of the unit under all operating conditions.
Detailed description of the invention
Fig. 1 is constant temperature dehumidification air-conditioning system schematic diagram；
Fig. 2 is the judgment method and manner of execution flow chart that heat compensation whether is needed when dehumidifying；
Fig. 3 is the method flow diagram of temperature fluctuation range on the inside of control room；
Fig. 4 is the judgment method and manner of execution flow chart that heat compensation amount is adjusted when indoor temperature increases；
Fig. 5 is the judgment method and manner of execution flow chart that heat compensation amount is adjusted when indoor temperature declines；
Fig. 6 is the control flow chart for having the dehumidifying of temperature-compensating to run lower indoor and outdoor rotation speed of fan.
Detailed description of the invention: 100. compressors；210. part flow arrangement；220. current-collecting device；310. first flow control valves；320.
Second flow control valve；410. first blowers；420. second blowers；510. first heat exchanger；520. second heat exchanger；
530. third heat exchangers；610. first check valves；620. second one-way valve；700. throttle valve.
Specific embodiment
In this patent document, the various implementations of Fig. 1-6 discussed below and principle or method for describing the disclosure
Example is served only for illustrating, and should not be construed as in any way and limit the scope of the present disclosure.It should be understood by those skilled in the art that
, the principle or method of the disclosure can realize in any appropriate arrangement air-conditioning system.With reference to attached drawing, the preferred reality of the disclosure
Applying example will be described below.In the following description, the detailed description of well-known function or configuration will be omitted, in order to avoid with
Unnecessary details obscures the theme of the disclosure.Moreover, term used herein defines function according to the present invention.Cause
This, the term may according to the intention or usage of user or operator difference.Therefore, term used herein is necessary
Understood based on made description herein.
A kind of air-conditioning system, as shown in Figure 1, including being sequentially connected in series the throttle valve 700 to form total refrigerant flow, the friendship of third heat
Parallel operation 530 and compressor 100 are connected to the first refrigerant branch of composition closed loop with total refrigerant flow, and described total cold
The the second refrigerant branch and control module of matchmaker's fluid communication composition closed loop；
The first refrigerant branch is for freezing, and the second refrigerant branch is for dehumidifying；
The control module is used to control the cold medium flux of the first refrigerant branch and the second refrigerant branch, to realize not
With the dehumidifying under load.
Wherein, the first refrigerant branch includes the first flow control valve 310 being sequentially connected in series and first heat exchanger
510, and the refrigerant exit pipe of the first flow control valve 310 is connect with the refrigerant inlet pipe of the first heat exchanger 510.
The second refrigerant branch includes the second flow control valve 320 being sequentially connected in series and second heat exchanger 520；And institute
The refrigerant exit pipe for stating second flow control valve 320 is connect with the refrigerant inlet pipe of the second heat exchanger 520.
The second heat exchanger 520 and the third heat exchanger 530 are arranged in the same wind field, and the third
The upstream of wind field is arranged in heat exchanger 530；The downstream of wind field is arranged in the second heat exchanger 520.So set, can
So that indoor air is first passed through dehumidification by condensation, obtains heat compensation using condenser, machine is made by relevant logic control
Under dehumidification mode, the temperature fluctuation of indoor controls in the safe range of setting room air-conditioning.
In addition, the air-conditioning system further includes part flow arrangement 210 and current-collecting device 220, the setting of part flow arrangement 210 exists
On the gas exhaust piping of the compressor 100, and the exhaust outlet Guan Lian of the general pipeline of the part flow arrangement 210 and the compressor 100
It connects, the first branch pipe is connect with the refrigerant inlet pipe of the first refrigerant branch, and the second branch pipe is cold with the second refrigerant branch
The connection of matchmaker's inlet tube；
The current-collecting device 220 is arranged on the air inlet pipeline of throttle valve 700, and the general pipeline of the current-collecting device 220 with
The refrigerant inlet pipe of the throttle valve 700 connects, and the first branch pipe is connect with the refrigerant exit pipe of the first refrigerant branch, and second
Branch pipe is connect with the refrigerant exit pipe of the second refrigerant branch.
The first check valve 610, the second refrigerant branch are additionally provided on the refrigerant exit pipe of the first refrigerant branch
Refrigerant exit pipe on be additionally provided with second one-way valve 620.When for preventing a certain refrigerant flow of isolated operation, high pressure refrigerant is filled
It infuses and is not involved in the heat exchanger of operation, reduce the coolant quantity that system participates in circulation.
In refrigerant flow described above, the refrigerant first flow path is in parallel with the refrigerant second flow path.So set
It sets, the air-conditioning system can be made freely to switch between refrigeration mode and dehumidification mode, and can facilitate to two refrigerant streams
The independent control on road.
According to content described above, this programme additionally provides the control method of air-conditioning system described above, comprising: control
The cold medium flux of the first refrigerant branch and the second refrigerant branch, to realize the dehumidifying under different load.
Below in conjunction with the attached drawing in the application control method embodiment, technical solutions in the embodiments of the present application is carried out
It clearly and completely describes, it is clear that described embodiments are only a part of embodiments of the present application, rather than whole implementation
Example.Based on the embodiment in the application, obtained by those of ordinary skill in the art without making creative efforts
Every other embodiment, shall fall in the protection scope of this application.
As shown in Fig. 2, the control method of the air-conditioning system of an embodiment includes the following steps S110~S130.
Step S110: judging whether indoor dehumidifying needs heat compensation, if so, thening follow the steps S120, otherwise executes
Step S130.In some cases, indoor does not have refrigeration demand or thermic load smaller to air conditioner in machine room, but has dehumidification, that
The operating status of the air-conditioning system will be adjusted at this time, the air-conditioning system is provided with the second refrigerant branch
Road provides system-based to obtain heat compensation under dehumidification mode；Judge whether indoor dehumidifying needs heat compensation both may be used
The detection information that can also be passed back by the control module by the sensor that the air-conditioner system is arranged taking human as judgement oneself
Dynamic judgement；Wherein, artificial judgement is generally used for before and after maintenance down, is judged automatically and is generally used in computer room operational process.It is described
The operating status of air-conditioning system will be adjusted by judgement above-mentioned, make the demand for adapting to refrigeration and dehumidifying in computer room.
Step S120: the cold medium flux adjusted in the second refrigerant branch carries out heat compensation.Dehumidifying when indoor needs
When wanting heat compensation, it can be compensated by the refrigerant heat release in the second refrigerant branch；In the second refrigerant branch
Cold medium flux is carried out by the aperture of the second flow control valve 320 and the opening ratio of the first flow control valve 310
It adjusts.
Step S130: the cold medium flux in setting the second refrigerant branch is zero.When indoor, dehumidifying does not need heat
When compensation, then the second refrigerant branch can be blocked by closing the second flow control valve 320, even if described second is cold
Cold medium flux in matchmaker's branch is zero, and air-conditioning system directly runs refrigeration mode at this time.
The control method of the air-conditioning system of the present embodiment, by judging whether indoor dehumidifying needs heat compensation and institute
It needs the number of heat compensation to adjust the cold medium flux in the second refrigerant branch, makes when needing heat compensation, allow high temperature
Refrigerant part or all flow through the condenser that indoor side air is swum off field.So set, can either make after dehumidification by condensation
Air is heated using condenser and obtains temperature-compensating, by relevant logic control, achievees the effect that constant temperature dehumidification, from
And the requirement of dehumidification requirements and air conditioner in machine room Wind Volume in the case of meeting air conditioner in machine room indoor Smaller load or zero load, again
It can be good at carrying out heat compensation using the heat of air-conditioning system itself, it is energy saving without additional auxiliary thermal.
As shown in figure 3, the control method of the air-conditioning system of an embodiment includes the following steps S210~S230.
Step S210: judging whether indoor temperature reaches setting value, if so, thening follow the steps S220, otherwise executes step
Rapid S230.The calorific value of each electronic equipment in computer room is dynamic change, when not reducing air quantity and evaporating temperature, is just needed
How much the heat for controlling heat compensation carrys out the temperature of dehumidifying operation on the inside of control room.Exist always to control the temperature in computer room
The interior real time temperature it is necessary to detect computer room inner sensor of the safe range of setting is compared with set temperature, and by described
Control module is judged and is exported control signal.
Step S220: the cold medium flux ratio of the first refrigerant branch and the second refrigerant branch is adjusted.Adjust described
The cold medium flux ratio of one refrigerant branch and the second refrigerant branch can pass through the aperture of the adjusting first flow control valve 310
And/or the aperture of the second flow control valve 320 realizes that method is simple, it is easy to operate, and precision is high.
Step S230: the cold medium flux constant rate of the first refrigerant branch and the second refrigerant branch is maintained.Maintain institute
The cold medium flux constant rate for stating the first refrigerant branch and the second refrigerant branch maintains 310 He of first flow control valve
The aperture of the second flow control valve 320 is constant.
Specific air-conditioning system as shown in Figure 4 and Figure 5 adjusts the cold of the first refrigerant branch and the second refrigerant branch
The control method of matchmaker's flow proportional, including step S310~S330 and step S410~S430.
It is illustrated in figure 4 the judgment method and manner of execution that heat compensation amount is adjusted when indoor temperature increases.
Step S310: judging whether temperature raising in indoor reaches the first setting value, if so, S320 is thened follow the steps, it is no
Then follow the steps S330.In order to maintain the efficient stable of electronic equipment to work, the temperature fluctuation in computer room will be controlled in design
In safe range, when the calorific value of computer room inner electronic equipment is greater than the sky at this time plus the heat compensation amount of the air-conditioning system
When the refrigerating capacity of adjusting system, the temperature in computer room will start to increase, and the control module is to the temperature sensing being arranged in computer room
Device detects that temperature information carries out operation, compares and judge, and provides control the first refrigerant branch according to judging result
The relevant action signal of the cold medium flux ratio of road and the second refrigerant branch controls the temperature in computer room always in safety with this
Fluctuation in range, ensures the work of electronic equipment efficient stable.
Step S320: increasing the cold medium flux of the first refrigerant branch, reduces the refrigerant stream of the second refrigerant branch
Amount.When judging that temperature raising in indoor reaches the first setting value, the aperture of the increase first flow control valve 310 can be passed through
And/or reduce the aperture of the second flow control valve 320 to increase the cold medium flux of the first refrigerant branch, described in reduction
The cold medium flux of second refrigerant branch reduces heat so that less high temperature refrigerant condenses heat release in the second refrigerant branch
Amount compensation.
Step S330: the cold medium flux constant rate of the first refrigerant branch and the second refrigerant branch is maintained.Ought it sentence
When disconnected indoor temperature increases also not up to the first setting value, the first flow control valve 310 and the second flow are maintained
The aperture of control valve 320 is constant.Reduce unnecessary frequent movement in the air-conditioning system flow adjusting.
It is illustrated in figure 5 the judgment method and manner of execution that heat compensation amount is adjusted when the decline of indoor temperature.
Step S410: judging whether temperature decline in indoor reaches the second setting value, if so, S420 is thened follow the steps, it is no
Then follow the steps S430.In order to maintain the efficient stable of electronic equipment to work, the temperature fluctuation in computer room will be controlled in design
In safe range, when the calorific value of computer room inner electronic equipment is less than the sky at this time plus the heat compensation amount of the air-conditioning system
When the refrigerating capacity of adjusting system, the temperature in computer room will be begun to decline, and the control module is to the temperature sensing being arranged in computer room
Device detects that temperature information carries out operation, compares and judge, and provides control the first refrigerant branch according to judging result
The relevant action signal of the cold medium flux ratio of road and the second refrigerant branch controls the temperature in computer room always in safety with this
Fluctuation in range, ensures the work of electronic equipment efficient stable.
Step S420: reducing the cold medium flux of the first refrigerant branch, increases the refrigerant stream of the second refrigerant branch
Amount.When judging that temperature decline in indoor reaches the second setting value, the aperture of the increase second flow control valve 320 can be passed through
And/or reduce the aperture of the first flow control valve 310 to increase the cold medium flux of the second refrigerant branch, described in reduction
The cold medium flux of first refrigerant branch increases heat so that more high temperature refrigerants condense heat release in the second refrigerant branch
Amount compensation.
Step S430: the cold medium flux constant rate of the first refrigerant branch and the second refrigerant branch is maintained.Ought it sentence
When disconnected indoor temperature increases also not up to the first setting value, the first flow control valve 310 and the second flow are maintained
The aperture of control valve 320 is constant.Reduce unnecessary frequent movement in the air-conditioning system flow adjusting.
First setting value described above is greater than the second setting value.
The control method of the air-conditioning system of the present embodiment, by judging the real time temperature of indoor and the size of set temperature
Relationship come adjust dehumidifying run lower heat compensation number, and the aperture by adjusting the first flow control valve 310 and/or
The aperture of the second flow control valve 320 realizes the cold medium flux ratio of the first refrigerant branch and the second refrigerant branch
Adjusting, method is simple, easy to operate, and precision is high, can satisfy the temperature of setting thermic load all thermic load operating conditions below
Degree is adjusted.
In air-conditioning system described above, the first refrigerant branch includes the first flow control valve being sequentially connected in series
310 and first heat exchanger 510；The second refrigerant branch includes the second flow control valve 320 being sequentially connected in series and the second heat
Exchanger 520；The first flow control valve 310 and second flow control valve 320 for control the first refrigerant branch and
Cold medium flux in second refrigerant branch；The first heat exchanger 510 is radiated using the first blower 410；Second heat is handed over
Parallel operation 520 is radiated using the second blower 420.
Wherein, an embodiment of the control method of 410 revolving speed of the first blower is adjusted as shown in fig. 6, including following step
Rapid S510~S530.
Step S510: when judging that the air-conditioning system operation has the dehumidification mode of temperature-compensating, the first refrigerant branch
Cold medium flux whether be zero, it is no to then follow the steps S530 if so, then follow the steps S520.When air-conditioning system operation has
When the dehumidification mode of temperature-compensating, cold medium flux in the first refrigerant branch will certainly be less than pure refrigeration mould because of shunting function
Cold medium flux under formula, at this point, the heat exchange amount of the first heat exchanger 510 will reduce, if first blower 410 is still
It is then uneconomic for maintaining the revolving speed of refrigerating operaton.It is therefore desirable to according to the cold medium flux in the first heat exchanger 510 come
The revolving speed of first blower 410 is adjusted, specifically, according to the aperture of the first flow control valve 310 and/or described second
The aperture of flow control valve 320 controls the revolving speed of first blower 410.
Step S520: closing first blower 410 or reduces the revolving speed of first blower 410.When being needed in computer room
When temperature of more heat compensations to improve computer room as early as possible, all high temperature refrigerants in the air-conditioning system can be all passed through institute
It states the second refrigerant branch and carries out condensation heat release, to improve heat compensation amount；Cold medium flux is in the first refrigerant branch at this time
Zero, i.e. refrigerant does not need to carry out condensing heat-exchange by the first heat exchanger 510, in order to save electric energy for first wind
Organ closes；And in the air-conditioner set of part, control module is arranged in outdoor unit, and is carried out by the wind field of heat exchanger scattered
Heat in order to make the control module good heat radiating, while reducing because the start and stop bring surge of motor is impacted, also can choose drop
The revolving speed of low first blower 410 and not exclusively stop.
Step S530: it reduces the revolving speed of first blower 410 or maintains the revolving speed under refrigeration mode constant.When the sky
Adjusting system is run when having the dehumidification mode of temperature-compensating, and the cold medium flux in the first refrigerant branch will certainly because of shunting function
Less than the cold medium flux under pure refrigeration mode, at this point, the heat exchange amount of the first heat exchanger 510 will reduce, if described the
It is then uneconomic that one blower 410, which still maintains the revolving speed of refrigerating operaton,.So when the cold medium flux of the first refrigerant branch
When reduction, the revolving speed of first blower 410 should be reduced.Special circumstances, if the amount of temperature compensation demand of the air-conditioning system is very
Hour, the cold medium flux of the first refrigerant branch approaches cold medium flux when refrigeration, or cold in order to further increase liquid
When the degree of supercooling of matchmaker, then it can not reduce the revolving speed of first blower 410 and maintain to maintain the revolving speed under refrigeration mode constant.
The control method of the air-conditioning system of the present embodiment, by the revolving speed of the first blower 410 described on the outside of control room with
Cold medium flux in the first heat exchanger 510 changes and changes, and can guarantee 510 efflux of first heat exchanger
On the basis of state refrigerant degree of supercooling, the revolving speed of first blower 410 is reduced to reach energy-efficient purpose.
It is arranged under dehumidification mode in one of the embodiments, described the under the revolving speed and refrigeration mode of second blower
The revolving speed of two blowers is identical, so that indoor meets the Wind Volume demand of computer room always.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (12)
1. a kind of air-conditioning system, including being sequentially connected in series the throttle valve to form total refrigerant flow, third heat exchanger and compressor, with
First refrigerant branch of total refrigerant flow connection composition closed loop, composition closed loop is connected to total refrigerant flow
The second refrigerant branch and control module；
The first refrigerant branch is for freezing, and the second refrigerant branch is for dehumidifying；
The control module is used to control the cold medium flux of the first refrigerant branch and the second refrigerant branch, different negative to realize
Dehumidifying under lotus.
2. air-conditioning system according to claim 1, which is characterized in that the first refrigerant branch includes first be sequentially connected in series
Flow control valve and first heat exchanger, and the refrigerant exit pipe of the first flow control valve and the first heat exchanger
The connection of refrigerant inlet pipe.
3. air-conditioning system according to claim 1, which is characterized in that the second refrigerant branch includes second be sequentially connected in series
Flow control valve and second heat exchanger；And the refrigerant exit pipe of the second flow control valve and the second heat exchanger
The connection of refrigerant inlet pipe.
4. air-conditioning system according to claim 3, which is characterized in that the second heat exchanger and the third heat exchanger
It is arranged in the same wind field, and the upstream of wind field is arranged in the third heat exchanger；The second heat exchanger setting exists
The downstream of wind field.
5. air-conditioning system according to claim 1, which is characterized in that the air-conditioning system further includes part flow arrangement and afflux
Device, the part flow arrangement are arranged on the gas exhaust piping of the compressor, and the general pipeline of the part flow arrangement and the compression
The exhaust outlet pipe of machine connects, and the first branch pipe is connect with the refrigerant inlet pipe of the first refrigerant branch, the second branch pipe and described the
The refrigerant inlet pipe of two refrigerant branches connects；
The current-collecting device is arranged on the air inlet pipeline of throttle valve, and the general pipeline of the current-collecting device and the throttle valve is cold
The connection of matchmaker's inlet tube, the first branch pipe connect with the refrigerant exit pipe of the first refrigerant branch, the second branch pipe and described second cold
The refrigerant exit pipe of matchmaker's branch connects.
6. air-conditioning system according to claim 5, which is characterized in that on the refrigerant exit pipe of the first refrigerant branch also
It is provided with the first check valve, is additionally provided with second one-way valve on the refrigerant exit pipe of the second refrigerant branch.
7. a kind of control method of air-conditioning system, the air-conditioning system include throttle valve, third heat exchanger and compressor successively
The total refrigerant flow being composed in series, be connected to total refrigerant flow composition closed loop the first refrigerant branch, with it is described total
The the second refrigerant branch and control module of refrigerant flow connection composition closed loop；The first refrigerant branch is used to freeze,
The second refrigerant branch is for dehumidifying；It is characterized in that, which comprises
The cold medium flux of the first refrigerant branch and the second refrigerant branch is controlled, to realize the dehumidifying under different load.
8. the control method of air-conditioning system according to claim 7, which is characterized in that the method also includes: judge room
Whether inside dehumidifying needs heat compensation, if so, the cold medium flux adjusted in the second refrigerant branch carries out heat compensation,
Otherwise, the cold medium flux being arranged in the second refrigerant branch is zero.
9. the control method of air-conditioning system according to claim 7, which is characterized in that the method also includes: judge room
Whether inside temperature reaches setting value, if so, adjusting the cold medium flux ratio of the first refrigerant branch and the second refrigerant branch
Otherwise example maintains the cold medium flux constant rate of the first refrigerant branch and the second refrigerant branch.
10. the control method of air-conditioning system according to claim 9, which is characterized in that the first refrigerant branch of the adjusting
Include: with the step of cold medium flux ratio of the second refrigerant branch
When temperature raising in indoor reaches the first setting value, increase the cold medium flux of the first refrigerant branch, described in reduction
The cold medium flux of second refrigerant branch；When temperature decline in indoor reaches the second setting value, reduce the first refrigerant branch
Cold medium flux, increase the cold medium flux of the second refrigerant branch；First setting value is greater than the second setting value.
11. the control method of air-conditioning system according to claim 7, which is characterized in that the first refrigerant branch includes
The first flow control valve and first heat exchanger being sequentially connected in series；The second refrigerant branch includes the second flow being sequentially connected in series
Control valve and second heat exchanger；The first flow control valve and second flow control valve are for controlling the first refrigerant branch
Cold medium flux in road and the second refrigerant branch；The first heat exchanger uses the first fan radiating；Second heat exchange
Device uses the second fan radiating, the method also includes: when judging that the air-conditioning system operation has the dehumidification mode of temperature-compensating,
Whether the cold medium flux of the first refrigerant branch is zero, if so, closing first blower or reducing by first blower
Revolving speed otherwise reduce the revolving speed of first blower or maintain the revolving speed under refrigeration mode constant.
12. the control method of air-conditioning system according to claim 11, which is characterized in that the method also includes: setting
The revolving speed of second blower is identical as the revolving speed of the second blower described under refrigeration mode under dehumidification mode.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710940306.9A CN109595841A (en) | 2017-09-30 | 2017-09-30 | Air-conditioning system and its control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710940306.9A CN109595841A (en) | 2017-09-30 | 2017-09-30 | Air-conditioning system and its control method |
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| CN109595841A true CN109595841A (en) | 2019-04-09 |
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| CN201710940306.9A Pending CN109595841A (en) | 2017-09-30 | 2017-09-30 | Air-conditioning system and its control method |
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| CN113669939A (en) * | 2021-08-13 | 2021-11-19 | 珠海格力电器股份有限公司 | Air conditioning system and control method |
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