CN102460029B - Air conditioner and method for operating same - Google Patents
Air conditioner and method for operating same Download PDFInfo
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- CN102460029B CN102460029B CN201080025167.3A CN201080025167A CN102460029B CN 102460029 B CN102460029 B CN 102460029B CN 201080025167 A CN201080025167 A CN 201080025167A CN 102460029 B CN102460029 B CN 102460029B
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- air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/044—Systems in which all treatment is given in the central station, i.e. all-air systems
- F24F3/0442—Systems in which all treatment is given in the central station, i.e. all-air systems with volume control at a constant temperature
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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
- F25B25/00—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00
- F25B25/005—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00 using primary and secondary systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/10—Pressure
- F24F2140/12—Heat-exchange fluid pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/19—Pressures
- F25B2700/193—Pressures of the compressor
- F25B2700/1931—Discharge pressures
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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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/19—Pressures
- F25B2700/193—Pressures of the compressor
- F25B2700/1933—Suction pressures
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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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2117—Temperatures of an evaporator
- F25B2700/21171—Temperatures of an evaporator of the fluid cooled by the evaporator
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Air Conditioning Control Device (AREA)
- Other Air-Conditioning Systems (AREA)
Abstract
An air conditioner according to the present invention comprises: a compressor, a condenser, an expander and an evaporator, water pipes connected to said evaporator to supply cold water, and a plurality of chillers to which respective water pipes are connected in parallel to each other. The temperature of the cold water of the chiller in operation from among the plurality of chillers is set in accordance with the difference between a high pressure side and a lower pressure side, and the capacity of the compressor is adjusted in accordance with the set temperature of the cold water. When the difference between the high pressure side and the lower pressure side is higher than a preset level for a preset time and there is a chiller which is not currently in operation, an operating command is transmitted to the chiller which is currently not in operation.; Thus, the air conditioner of the present invention operates efficiently in accordance with loads, and power consumption is minimized.
Description
Technical field
The present invention relates to a kind of air regulator and operation method thereof, particularly a kind ofly utilize kind of refrigeration cycle to make water cooling and make air and cooling water carries out being supplied to indoor air regulator and operation method thereof after heat exchange.
Background technology
Generally speaking, air regulator is in order to build more comfortable indoor environment and to utilize the kind of refrigeration cycle of the cold-producing medium being made up of compressor, condenser, expansion mechanism and evaporimeter to the indoor device that carries out refrigerating/heating to user of service.
In air regulator, evaporimeter makes water and cold-producing medium carry out heat exchange, and the water that carries out heat exchange with cold-producing medium makes air cooling in the heat exchangers such as chilled water coil, if pass through the air after cools down to indoor conveying, just can freeze to indoor.
But, the air regulator of conventional art, if when operation start compressor and in the time stopping close compressor, in in the time starting compressor, cold water cools off air, freeze to indoor, but in the case of can not come at the temperature of appropriate change cold water according to indoor payload, exist and be difficult to best efficiency operation and be especially difficult to effectively corresponding problem when sub-load (partial load).
Summary of the invention
Technical problem
The present invention proposes for the problem that solves above-mentioned conventional art, and its object is, provides a kind of pressure reduction according to kind of refrigeration cycle to set cold water design temperature to control the air regulator of compressor.
Another object of the present invention is to, provide a kind of in the time of the sub-load of air conditioning area, the a part of cooler only moving in multiple coolers is raised the efficiency, and in the situation that load is large, appends the off-duty cooler of operation and carry out the operation method of the air regulator of corresponding load rapidly.
The means of dealing with problems
Comprise multiple coolers for the air regulator of the present invention addressing the above problem, described multiple cooler comprises compressor, condenser, expansion mechanism and evaporimeter, and water pipe is connected and fetches feeding cold water with above-mentioned evaporimeter, and above-mentioned water pipe is to connect side by side; Operating cooler in above-mentioned multiple cooler is set the cold water design temperature of operating cooler according to the differential pressure between high pressure one side and low pressure one side, and, regulate the working capacity of above-mentioned compressor according to the cold water design temperature setting, if above-mentioned differential pressure for there is current off-duty cooler more than setting pressure and in above-mentioned multiple coolers, is transmitted operating instruction to current off-duty cooler in setting-up time.
Above-mentioned multiple cooler can comprise respectively: low pressure sensor, and it detects the suction side pressure of above-mentioned compressor; High pressure sensor, it detects the discharge lateral pressure of above-mentioned compressor; Cooler control part, differential pressure between the high pressure that its basis is detected by above-mentioned high pressure sensor and the low pressure being detected by above-mentioned low pressure sensor is set above-mentioned cold water design temperature, and regulates the working capacity of above-mentioned compressor according to the cold water design temperature setting.
Above-mentioned air regulator comprises shared water pipe temperature sensor, and this shared water pipe temperature sensor is for detection of the temperature of the shared water pipe that makes the cooling water of supplying with from above-mentioned multiple coolers pass through together in above-mentioned water pipe; Above-mentioned cooler control part can be set above-mentioned cold water design temperature according to the temperature being detected by above-mentioned shared water pipe temperature sensor.
Above-mentioned air regulator also comprises communication line, and this communication line, for connecting the cooler control part of above-mentioned multiple coolers, makes the some coolers from above-mentioned multiple coolers transmit operating instruction to another cooler.
The operation method of air regulator of the present invention is used for moving multiple coolers, described multiple cooler comprises compressor, condenser, expansion mechanism and evaporimeter, and make water pipe be connected and fetch feeding cold water with above-mentioned evaporimeter, and, above-mentioned water pipe is to connect side by side, the operation method of above-mentioned air regulator comprises the steps: cold water design temperature setting step, if the differential pressure of the high pressure of above-mentioned operating cooler and low pressure is more than setting pressure in setting-up time, set cold water design temperature; Compressor operating capacity regulating step, according to the working capacity of setting at above-mentioned cold water design temperature the cold water design temperature of setting in step and regulate above-mentioned compressor; Operating instruction transmitting step, if above-mentioned differential pressure is to have current off-duty cooler more than setting pressure and in above-mentioned multiple coolers in setting-up time, to current off-duty cooler transmission operating instruction.
Set in step at above-mentioned cold water design temperature, if above-mentioned differential pressure is more than setting pressure in setting-up time, can improve above-mentioned cold water design temperature.
In above-mentioned operating instruction transmitting step, transmit the design temperature that stops of above-mentioned operating instruction and current off-duty cooler to current off-duty cooler simultaneously.
After above-mentioned operating instruction transmitting step, if the cold water outlet temperature of the shared water pipe in above-mentioned water pipe is different from above-mentioned cold water design temperature, returns to above-mentioned cold water design temperature and set step.
The operation method of above-mentioned air regulator also comprises the steps: that cold water design temperature increases step, after above-mentioned operating instruction transmitting step, if the cold water outlet temperature of the shared water pipe in above-mentioned water pipe, lower than above-mentioned cold water design temperature, increases above-mentioned cold water design temperature; Compressor operating capacity readjusts step, regulates the working capacity of above-mentioned compressor according to the cold water design temperature of setting in above-mentioned cold water design temperature increase step.
The operation method of above-mentioned air regulator also comprises and stops step, after above-mentioned compressor working capacity readjusts step, if above-mentioned cold water design temperature cooler stop design temperature more than, make above-mentioned operating cooler stop.
The operation method of above-mentioned air regulator also comprises the steps: that cold water design temperature reduces step, after above-mentioned operating instruction transmitting step, if the cold water outlet temperature of the shared water pipe in above-mentioned water pipe, higher than above-mentioned cold water design temperature, reduces above-mentioned cold water design temperature; Compressor operating capacity readjusts step, regulates the working capacity of above-mentioned compressor according to the cold water design temperature of setting in above-mentioned cold water design temperature reduction step.
After above-mentioned compressor working capacity readjusts step, return to above-mentioned cold water design temperature and set step.
The effect of invention
The tool of the present invention that forms structure described above has the following advantages; Regulate the working capacity of above-mentioned compressor according to the cold water design temperature setting, thereby can carry out the effective operation based on load and can realize power consumption minimizing.
In addition, tool has the following advantages: owing to can only moving minimal cooler when the sub-load, and in the situation that Yi Yitai cooler is difficult to corresponding load, append current another cooler stopping of operation, thereby can be with minimal power consumption and the corresponding operation of load.
Brief description of the drawings
Fig. 1 is the summary construction diagram of an embodiment of air regulator of the present invention.
Fig. 2 is the structure chart that the inside of air-conditioning unit shown in Figure 1 is shown.
Fig. 3 is the structure chart that the inside of cooler shown in Figure 1 is shown.
Fig. 4 is the control block diagram of an embodiment of air regulator of the present invention.
Fig. 5 is the flow chart that an embodiment of the operation method of air regulator of the present invention is shown.
Detailed description of the invention
Below, with reference to the accompanying drawings embodiments of the invention are described in detail.
Fig. 1 is the summary construction diagram of an embodiment of air regulator of the present invention, Fig. 2 is the structure chart that the inside of air-conditioning unit shown in Figure 1 is shown, Fig. 3 is the structure chart that the inside of cooler shown in Figure 1 is shown, Fig. 4 is the control block diagram at the cooler shown in Fig. 1 and Fig. 3.
As shown in Figure 1, the air regulator of the present embodiment comprises at least one air-conditioning unit 1,2 and multiple cooler 3,4,5.Utilize water pipe 6 to connect at least one air-conditioning unit 1,2 and multiple cooler 3,4,5.
Air-conditioning unit 1,2 needs as the cold water that uses the cold water of supplying with from multiple coolers 3,4,5, comprises heat exchangers such as making the chilled water coil passed through from the cold water of multiple coolers 3,4,5 supplies.
Air-conditioning unit 1,2 can form by making room air carry out being supplied to indoor non-ventilation air element after heat exchange in heat exchanger, also can be by outdoor air and room air are mixed, and make mixing air in heat exchanger, carry out being supplied to indoor ventilation dual-purpose adjusting air element after heat exchange, the situation that regulates air element to form by ventilation dual-purpose will be described below.
Air-conditioning unit 1,2 can be arranged in the building that is provided with air regulator with indoor separate air conditioning chamber or the Machine Rooms etc. that are regulated air by air-conditioning unit 1,2, also can be arranged on outdoor.
As cooler 3,4,5, air-conditioning unit 1,2 can be made up of multiple air-conditioning units, also can converge the single air-conditioning unit passing through by the cold water that makes to supply with from multiple coolers 3,4,5 and form.
In the situation that air-conditioning unit 1,2 is made up of multiple air-conditioning units, can either be respectively air conditioning area be independently carried out to air conditioning, also can carry out air conditioning to an air conditioning area.
Cooler the 3,4, the 5th, utilizes the kind of refrigeration cycle being made up of compressor, condenser, expansion mechanism and evaporimeter to come to the Cold water supply unit of the heat exchanger feeding cold water of air-conditioning unit 1,2.
In the situation that condenser is made up of air cooled condenser, cooler 3,4,5 is arranged on outdoor, in the situation that condenser is made up of water cooled condenser, is arranged on the Machine Rooms such as basement or is arranged on outdoor.
Water pipe 6 comprises shared water pipe 7, cooler connecting water pipe 8,9,10 and air-conditioning unit tube connector 11,12.
In water pipe 6, the cold water of supplying with from multiple coolers 3,4,5 is together by sharing water pipe 7.
Cooler connecting water pipe 8,9,10 connects shared water pipe 7 and multiple cooler 3,4,5.
Air-conditioning unit tube connector 11,12 connects shared water pipe 6 and at least one air-conditioning unit 1,2.
Shared water pipe 7, cooler connecting water pipe 8,9,10 and the air-conditioning unit tube connector 11,12 of water pipe 6 is by forming for feed pipe and return water pipe, this supplies with the cold water of cooler 3,4,5 to air-conditioning unit 1,2 for feed pipe, this return water pipe will be recycled to cooler 3,4,5 by the cold water of air-conditioning unit 1,2.
Air-conditioning unit 1,2 comprises: Air Blast fan, and its suction chamber outer air and room air make it indoor by being supplied to after heat exchanger; Air-conditioning unit control part 13,14, controls Air Blast fan etc.
In the situation that air-conditioning unit 1,2 is made up of multiple air-conditioning units, the air-conditioning unit control part 13,14 of each air-conditioning unit 1,2 interconnects by communication line 15.
Multiple coolers 3,4,5 comprise the cooler control part 16,17,18 for controlling compressor etc.
The cooler control part 16 of a cooler in multiple coolers 3,4,5 is connected by communication line 19 with the air-conditioning unit control part 13 of air-conditioning unit 1,2, cooler 3,4,5 cooler control part 16,17,18 is separately connected by communication line 20,21, so that some coolers send operating instruction to another cooler.
For example, at air-conditioning unit 1, 2 are made up of the first air-conditioning unit 1 and the second air-conditioning unit 2, and cooler 3, 4, 5 by the first cooler 3, in the situation that the second cooler 4 and the 3rd cooler 5 form, the first air-conditioning unit 1 and the second air-conditioning unit 2 air-conditioning unit control part 13 separately, 14 are connected by communication line 15, the air-conditioning unit control part 13 of the some air-conditioning units in the first air-conditioning unit 1 and the second air-conditioning unit 2 is by communication line 19 and first, second, the 3rd cooler 3, 4, the cooler control part 16 of the first cooler 3 in 5 is connected, the cooler control part 16 of the first cooler 3 is connected by communication line 20 with the cooler control part 17 of the second cooler 4, so that the first cooler 3 is inputted operating instruction to the second cooler 4, the cooler control part 17 of the second cooler 4 is connected by communication line 21 with the cooler control part 18 of the 3rd cooler 5, so that the second cooler 4 is inputted operating instruction to the 3rd cooler 5.
Below, with reference to Fig. 2, the detailed structure of the some air-conditioning units in air-conditioning unit 1,2 is described.
Air-conditioning unit 1,2 is included in inside and has the air-conditioning unit housing 22 in space, is formed with room air sucting 22A, room air discharge portion 22B, extraneous air sucting 22C and regulates air discharge portion 22D on this air-conditioning unit housing 22.
Air-conditioning unit 1,2 also comprises: Air Blast fan 27,28, be arranged on the inside of air-conditioning unit housing 22, and make outdoor air and indoor air flows; Heat exchanger 40, the inside that it is arranged on air-conditioning unit housing 22, makes to regulating mobile air and the cold water of air discharge portion 22D to carry out heat exchange.
Air refreshing tube 22E is connected in air-conditioning unit 1,2, and this air refreshing tube 22E is connected indoor and room air sucting 22A, with by room air sucting 22A to the air in air-conditioning unit housing 22 suction chambers.
Discharge duct 22F is connected in air-conditioning unit 1,2, this discharge duct 22F makes room air discharge portion 22B and outdoor being connected, to be drawn into the airborne portion of air of air-conditioning unit housing 22 inside to outdoor discharge by room air sucting 22A.
Outer feed channel 22G is connected in air-conditioning unit 1,2, and this outer feed channel 22G is connected outdoor and outdoor air sucting 22C, with by outdoor air sucting 22C to the inner suction chamber outer air of air-conditioning unit housing 22.
Air-conditioning unit 1,2 is connected with steam line 22H, and this steam line 22H makes to regulate air discharge portion 22D and indoor being connected, with the air in air-conditioning unit housing 22 internal regulation to indoor supply.
Air refreshing tube 22E is connected with room air sucting 22A, and discharge duct 22F is connected with room air discharge portion 22B, and outer feed channel 22G is connected with outdoor air sucting 22C, and steam line 22H is connected with regulating air discharge portion 22D.
Air-conditioning unit 1,2 is configured to by room air discharge portion 22B and is drawn into a part of room air in the room air of room air sucting 22A to outdoor discharge, all the other room airs mix with the outdoor air that is drawn into extraneous air sucting 22C, and the air of mixing and heat exchanger 40 carry out being supplied to indoor by adjusting air discharge portion 22D and steam line 22H after heat exchange.
In air-conditioning unit 1,2, before heat exchanger 40, be provided with the mixing chamber (Mixing Chamber) 26 for mixing room air and outdoor air towards air-flow direction.
Air Blast fan 27,28 comprises: return air fan 27, and its flow direction towards room air, between room air sucting 22A and room air discharge portion 22B, sucks room air be delivered to air-conditioning unit housing 22 inside; Supply with fan 28, its flow direction towards mixing air, between heat exchanger 40 and adjusting air discharge portion 22D, is drawn into heat exchanger 40 afterwards to regulating air discharge portion 22D to carry by mixing air.
The motor that air blast drive source 33 can either be connected in the pivot of air blast 29 by rotating shaft forms, also can by be connected in air blast 29 pivot axle 34, form to be positioned at motor 35 and the drive disk assembly that the mode of outer cover 32 outsides arranges, the driving force of motor 35 is passed to axle 34 by this drive disk assembly connecting motor 35 and axle 34.
Drive disk assembly by be arranged on drive pulley 36 on the rotating shaft of motor 35, be arranged on the follow-up pulley 38 on axle 34 and be wound on drive pulley 36 and follow-up pulley 38 on transport tape 37 form.
Air-conditioning unit 1,2 also comprises the damper 43,44,45 of the ratio of the room air that can regulate in mixing air and outdoor air.
Damper 43,44,45 comprises: exhaust damper 43, and it is arranged on room air discharge portion 22B, regulates room air capacity; Outer gas damper 44, it is arranged on extraneous air sucting 22C, carrys out conditioning chamber outer air inspiratory capacity; Mix damper 45, it is arranged on mixing chamber 26, carrys out the airborne air capacity that is drawn into mixing chamber 26 in conditioning chamber.
Below, with reference to Fig. 3, the detailed structure of the some coolers in cooler 3,4,5 is described.
Cooler 3,4,5 comprises: cooler casing 50; Compressor 51, its compressed refrigerant; Condenser 52, it makes the condensation of refrigerant of compression in compressor 51; Expansion mechanism 53, it expands the cold-producing medium of condensation in condenser 52; Evaporimeter 54, it makes the cold-producing medium and the water that in expansion mechanism 53, expand carry out heat exchange and evaporate.
In cooler 3,4,5, form kind of refrigeration cycle by compressor 51, condenser 52, expansion mechanism 53 and evaporimeter 54.
In the situation that condenser 52 is made up of air cooled condenser, cooler 3,4,5 is arranged on outdoor, and in the situation that condenser 52 is made up of water cooled condenser, cooler 3,4,5 is arranged on the Machine Rooms such as basement or outdoor.
On cooler casing 50, be provided with compressor 51, condenser 52, expansion mechanism 53 and evaporimeter 54, in the situation that condenser 52 is made up of air cooled condenser, cooler casing 50 forms that outdoor air is drawn into cooler casing 50 and carries out being discharged to after heat exchange the structure of cooler casing 50 outsides with condenser 52.
In compressor 51, discharge pipe is connected with condenser 52, and on discharge pipe, be provided with cold-producing medium for flowing out from compressor 51 and working oil and isolate the working oil separator 55 of working oil, the working oil that working oil is recycled to compressor 51 reclaims stream 56 and is connected in working oil separator 55.
In evaporimeter 54, form the refrigerant flow path that cold-producing medium is passed through and the current road that water is passed through across heat-exchanging part.
Cooler connecting tube 8,9,10 is connected in multiple inner tubes of evaporimeter 54.
Water pipe 6 is configured to connect respectively cooler casing 50 and air-conditioning unit housing 22, is provided with the water supply pump 58 that makes cold water circulation by suction cold water at water pipe 6.
Preferably, water supply pump 58 is arranged on air-conditioning unit 1,2 inside or cooler 3,4,5 inside, to control this water supply pump 58 or connect electric wire etc.
In cooler 3,4,5, the temperature of the cold water of discharging from evaporimeter 54 is different because of the working capacity of compressor 51, controls thus the working capacity of compressor 51 according to cold water design temperature (Twt).
In cooler 3,4,5, set the cold water design temperature (Twt) of operating cooler according to the differential pressure of high pressure one side of operating cooler and low pressure one side.
Cooler 3,4,5 also comprises for detection of the low pressure sensor 59 of the suction side pressure of compressor 51 with for detection of the high pressure sensor 60 of the discharge lateral pressure of compressor 51, the differential pressure of the high pressure that cooler control part 16,17,18 bases are detected by high pressure sensor 60 and the low pressure being detected by low pressure sensor 59 is set cold water design temperature (Twt), and regulates the working capacity of compressor 51 according to the cold water design temperature (Twt) setting.
Cold water design temperature (Twt) is set in the variable scope of cold water temperature by cooler control part 16,17,18, in the variable lower limit of cold water (Twtmin) and the variable higher limit of cold water (Twtmax) scope.
At the initial operating stage of air regulator, benchmark cold water design temperature in cooler control part 16,17,18 and cold water design temperature variable range is accordingly with benchmark working capacity control compressor 51, after this set new cold water design temperature (Twt) according to the difference of the pressure being detected by low pressure sensor 59 and high pressure sensor 60, and with the working capacity drive compression machine 51 corresponding with the cold water design temperature (Twt) of new settings.
Cooler 3,4,5 is in the time setting cold water design temperature as above (Twt), if the pressure differential of high pressure and low pressure in setting-up time setting value more than, owing to only can not corresponding loading with current operating cooler, thereby lifting cold water design temperature (Twt), to reduce the power consumption of current operating cooler, if and have current off-duty cooler, send operating instruction to current off-duty cooler.
As shown in Figure 1, the air regulator of the present embodiment also comprises: share water pipe temperature sensor 62, it measures the temperature of the shared water pipe 7 in water pipe 6; Adjusting portion 64, it is to move/shut-down operation of air regulator, and inputs the desired temperature such as indoor design temperature.
Share the temperature of water pipe temperature sensor 62 for detection of the cold water of supplying with to air-conditioning unit 1,2 after cooler 3,4,5 flows out, be arranged on on the shared water pipe 7 of feed pipe.
Cooler control part 16,17,18 makes cooler 3,4,5 move/stop according to the input signal of adjusting portion 64, and reset cold water design temperature (Twt) according to the pressure being detected by low pressure sensor 59 and high pressure sensor 60, and make current off-duty cooler operation, after this, reset cold water design temperature (Twt) according to the temperature of the cold water being detected by shared water pipe temperature sensor 62, and utilize the cold water design temperature (Twt) of new settings to regulate the working capacity of compressor.
The action of the present invention that forms said structure is as follows.
First, when users of service etc. move air regulator by adjusting portion 64, air-conditioning unit 1,2 operation, and at least one cooler operation in multiple cooler 3,4,5.
In multiple coolers 3,4,5, when cooler control part 16,17, the 18 drive compression machines 51 of operating cooler and outdoor fan 57, regulate and start expansion mechanism 53, and driving water supply pump 58.
In the time of drive compression machine 51, cold-producing medium circulates in compressor 51, condenser 52, expansion mechanism 53 and evaporimeter 54, now, reduces the temperature of water in the heat of capturing water by the cold-producing medium of evaporimeter 54.
In the time driving water supply pump 58, the water cooling off in evaporimeter 54 makes the heat exchanger 40 of air-conditioning unit 1,2 be recycled to evaporimeter 54 by water pipe 6 after cooling by water pipe 6, now, water makes heat exchanger 40 cooling in circulating in evaporimeter 54 and heat exchanger 40.
Driving Air Blast fan 27,28 o'clock, room air is drawn into air-conditioning unit housing 22 inside by air refreshing tube 22E, and the airborne portion of air sucking is by discharge duct 22F to outdoor discharge, and remaining air is drawn into mixing chamber 26.And outdoor air is drawn into mixing chamber 26 by outer feed channel 22G and mixes with the room air that is drawn into mixing chamber 26 in room air.The water that the air mixing is passed heat exchanger 40 in by heat exchanger 40 is captured heat makes temperature step-down, is after this supplied to indoor via steam line 22H.
In the time of air regulator operation as above, the cooler control part of operating cooler decides the working capacity of compressor 51 according to cold water design temperature, and working capacity drive compression machine 51 to be determined, and in the case of moving the current cooler stopping, making the current cooler operation stopping.
While operation at the initial stage of air regulator, cooler control part 16,17,18 is set as cold water design temperature (Twt) by the benchmark cold water design temperature (Twi) in cold water design temperature scope and carrys out drive compression machine 51, after this, if set new cold water design temperature (Twt), regulate the working capacity of compressor 51 according to the cold water design temperature of new settings.
For example, be set as 5 DEG C～15 DEG C in the variable range of cold water design temperature (Twt), benchmark cold water design temperature (Twi) is set as 10 DEG C, the cooler control part of operating cooler is with the working capacity control compressor 51 corresponding with benchmark cold water design temperature, and change cold water design temperature according to the temperature of the difference of high pressure and low pressure and shared water pipe 7 in drive compression machine 51 processes, after this, with the working capacity control compressor 51 corresponding with the cold water design temperature being changed.
Below, the operation method of the air regulator to following is described in detail, the operation method of this air regulator refers to, when some coolers 3 in each cooler 3,4,5 move, operating cooler 3 moves another cooler 4 when changing cold water design temperature (Twt) according to the difference of high pressure and low pressure, and changes the operation method of cold water design temperature (Twt) according to the temperature that shares water pipe 7.
Fig. 5 is the flow chart that an embodiment of the operation method of air regulator of the present invention is shown.
One embodiment of the operation method of air regulator of the present invention comprises cold water design temperature setting step S1, S2 and compressor operating capacity regulating step S3.
Set in step S1, S2 at cold water design temperature, set cold water design temperature according to the differential pressure of the high pressure of operating cooler 3 and low pressure.(S1、S2)
Set in step S1, S2 at cold water design temperature, if differential pressure in setting-up time (for example 10 minutes) more than setting pressure, as described below, consider current off-duty cooler 4 is moved, and increase the cold water design temperature of operating cooler 3, to reduce the power consumption of current operating cooler 3.
Here, set in step S1, S2 at cold water design temperature, if after detecting the time point of high pressure and low pressure and be just initial stage operation of cooler 3, using benchmark cold water design temperature (Twi) as current cold water design temperature, and will for example, be cold water design temperature after this than the Temperature Setting of the high setting value of benchmark cold water design temperature (Twi) (0.5 DEG C).In contrast, if once changing subcooled water design temperature according to detecting high pressure and low pressure before, using the cold water design temperature of time point that detects high pressure and low pressure as current cold water design temperature, and will for example, be cold water design temperature after this than the Temperature Setting of the high setting value of cold water design temperature (0.5 DEG C) of the time point that detects high pressure and low pressure.
On the other hand, in the operation method of air regulator, if differential pressure in setting-up time not more than setting pressure, maintain cold water design temperature in the past.
In addition, in compressor operating capacity regulating step S3, regulate the working capacity of compressor 51 according to the cold water design temperature (Twt) of setting in cold water design temperature setting step S1, S2, differential pressure in setting-up time (for example 10 minutes) in the situation that setting pressure is above, with the corresponding working capacity control compressor 51 of cold water design temperature increasing.
On the other hand, in the operation method of air regulator, if differential pressure in setting-up time not more than setting pressure, maintain the control to compressor 51 with the working capacity corresponding with cold water design temperature in the past.
On the other hand, in the operation method of air regulator, in compressor operating capacity regulating step S3 as above or after this step S3, if there is current off-duty cooler 4 in multiple coolers, implement to transmit to current off-duty cooler 4 operating instruction transmitting step S4, the S5 of operating instruction, if there is no current off-duty cooler in multiple coolers, all coolers are current in service, do not implement operating instruction transmitting step.
In operating instruction transmitting step S4, S5, transmit the design temperature that stops of operating instruction and current off-duty cooler 4 to current off-duty cooler 4, and current off-duty cooler 4 appends operation and stops according to the design temperature that stops of the operating instruction being transferred to and cooler simultaneously.
When being transferred to the cooler that the stops design temperature 4 drive compression machines 51 of operating instruction as above and cooler and outdoor fan 57, regulating and start expansion mechanism 53, and driving water supply pump 58.
At least one air-conditioning unit 1,2 was compared before the off-duty cooler 4 of operation a large amount of cold water is passed through, the temperature that is supplied to indoor cold air from air-conditioning unit 1,2 is compared and is appended before operation off-duty cooler 4 lowly, and indoor load reduces gradually.
As mentioned above, in air regulator running,, after implementing operating instruction transmitting step S4, S5, cooler 3 is set cold water design temperature according to the cold water outlet temperature of the shared water pipe 7 in water pipe 6.
After operating instruction transmitting step S4, S5, if the cold water outlet temperature of the shared water pipe 7 in water pipe 6 is identical with cold water design temperature, 3 Returning water design temperatures of cooler are set step S1, S2.,, due to consistent with cold water design temperature because of the temperature of appending off-duty cooler 4 cold water of operation, thereby Returning water design temperature is set step S1, S2 in order to detect load change after this, and does not append change cold water design temperature.
Comprise the steps: that in addition cold water design temperature increases step S7, S8, after operating instruction transmitting step S4, S5, if the cold water outlet temperature of the shared water pipe 7 in water pipe 6 lower than cold water design temperature, 3, cooler increases cold water design temperatures; Compressor operating capacity readjusts step S9, regulates the working capacity of compressor 51 according to the cold water design temperature of setting in cold water design temperature increase step S7, S8.
; by making off-duty cooler 4 operations carry out the result of additional services cold water; in the time that the cold water outlet temperature that shares water pipe 7 drops to lower than cold water design temperature; reduce again the cold water design temperature of operating cooler 3 in order to reduce power consumption, and control compressor 1 according to this cold water design temperature.
On the other hand, also comprise and stop step S10, S11, stop in step S10, S11 at this, after compressor operating capacity readjusts step S9, for example, if cold water design temperature, more than cooler stops design temperature (15 DEG C), makes operating cooler 3 stop.
Here, cooler stops the maximum temperature in cold water design temperature (Twt) variable range that design temperature is preferably set to operating cooler.
In addition, comprise that cold water design temperature reduces step S12, after operating instruction transmitting step S4, S5, if the cold water outlet temperature of the shared water pipe 7 in water pipe 6 higher than cold water design temperature, 3, cooler reduces cold water design temperatures; Compressor operating capacity readjusts step S13, regulates the working capacity of compressor 51 according to the cold water design temperature of setting in cold water design temperature reduction step S12.
; even if by making off-duty cooler 4 operations carry out additional services cold water; share the cold water outlet temperature of water pipe 7 also higher than cold water design temperature; can not supply with fully the cold water of low temperature due to operating cooler 3, thereby reduce cold water design temperature and regulate the working capacity of compressor 51.
On the other hand, in the operation method of air regulator, after compressor operating capacity readjusts step S13, Returning water design temperature is set step S1, S2.
Claims (12)
1. an air regulator, is characterized in that,
Comprise multiple coolers, described multiple coolers comprise compressor, condenser, expansion mechanism and evaporimeter, and make water pipe be connected and fetch feeding cold water with above-mentioned evaporimeter, and above-mentioned water pipe is to connect side by side;
Operating cooler in above-mentioned multiple cooler is set the cold water design temperature of operating cooler according to the differential pressure between high pressure one side and low pressure one side, and, regulate the working capacity of above-mentioned compressor according to the cold water design temperature setting, if above-mentioned differential pressure for there being current off-duty cooler more than setting pressure and in above-mentioned multiple coolers, is transmitted operating instruction to current off-duty cooler in setting-up time.
2. air regulator according to claim 1, is characterized in that,
Above-mentioned multiple cooler comprises respectively:
Low pressure sensor, it detects the suction side pressure of above-mentioned compressor;
High pressure sensor, it detects the discharge lateral pressure of above-mentioned compressor;
Cooler control part, differential pressure between the high pressure that its basis is detected by above-mentioned high pressure sensor and the low pressure being detected by above-mentioned low pressure sensor, set above-mentioned cold water design temperature, and regulate the working capacity of above-mentioned compressor according to the cold water design temperature setting.
3. air regulator according to claim 2, is characterized in that,
Above-mentioned air regulator comprises shared water pipe temperature sensor, and this shared water pipe temperature sensor is for detection of the temperature of the shared water pipe that makes the cooling water of supplying with from above-mentioned multiple coolers pass through together in above-mentioned water pipe;
Above-mentioned cooler control part is set above-mentioned cold water design temperature according to the temperature being detected by above-mentioned shared water pipe temperature sensor.
4. according to the air regulator described in claim 2 or 3, it is characterized in that, above-mentioned air regulator also comprises communication line, this communication line, for connecting the cooler control part of above-mentioned multiple coolers, makes the some coolers from above-mentioned multiple coolers transmit operating instruction to another cooler.
5. an operation method for air regulator, for moving multiple coolers, described multiple coolers comprise compressor, condenser, expansion mechanism and evaporimeter, and make water pipe be connected and fetch feeding cold water with above-mentioned evaporimeter, above-mentioned water pipe is to connect side by side,
It is characterized in that,
Comprise the steps:
Cold water design temperature is set step, if the differential pressure between the high pressure of above-mentioned operating cooler and low pressure is more than setting pressure, to set cold water design temperature in setting-up time;
Compressor operating capacity regulating step, according to the working capacity of setting at above-mentioned cold water design temperature the cold water design temperature of setting in step and regulate above-mentioned compressor;
Operating instruction transmitting step, if above-mentioned differential pressure is to have current off-duty cooler more than setting pressure and in above-mentioned multiple coolers in setting-up time, to current off-duty cooler transmission operating instruction.
6. the operation method of air regulator according to claim 5, is characterized in that, sets in step at above-mentioned cold water design temperature, if above-mentioned differential pressure is more than setting pressure in setting-up time, increases above-mentioned cold water design temperature.
7. the operation method of air regulator according to claim 5, is characterized in that, in above-mentioned operating instruction transmitting step, transmits the design temperature that stops of above-mentioned operating instruction and current off-duty cooler to current off-duty cooler simultaneously.
8. the operation method of air regulator according to claim 5, it is characterized in that, after above-mentioned operating instruction transmitting step, if the cold water outlet temperature of the shared water pipe in above-mentioned water pipe is different from above-mentioned cold water design temperature, returns to above-mentioned cold water design temperature and set step.
9. the operation method of air regulator according to claim 5, is characterized in that,
Also comprise the steps:
Cold water design temperature increases step, after above-mentioned operating instruction transmitting step, if the cold water outlet temperature of the shared water pipe in above-mentioned water pipe, lower than above-mentioned cold water design temperature, increases above-mentioned cold water design temperature;
Compressor operating capacity readjusts step, regulates the working capacity of above-mentioned compressor according to the cold water design temperature of setting in above-mentioned cold water design temperature increase step.
10. the operation method of air regulator according to claim 9, it is characterized in that, also comprise and stop step, after above-mentioned compressor working capacity readjusts step, if above-mentioned cold water design temperature cooler stop design temperature more than, make above-mentioned operating cooler stop.
The operation method of 11. air regulators according to claim 10, is characterized in that,
Also comprise the steps:
Cold water design temperature reduces step, after above-mentioned operating instruction transmitting step, if the cold water outlet temperature of the shared water pipe in above-mentioned water pipe, higher than above-mentioned cold water design temperature, reduces above-mentioned cold water design temperature;
Compressor operating capacity readjusts step, regulates the working capacity of above-mentioned compressor according to the cold water design temperature of setting in above-mentioned cold water design temperature reduction step.
The operation method of 12. air regulators according to claim 11, is characterized in that, after above-mentioned compressor working capacity readjusts step, returns to above-mentioned cold water design temperature and sets step.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2009-0040916 | 2009-05-11 | ||
| KR1020090040916A KR20100121961A (en) | 2009-05-11 | 2009-05-11 | Air conditioner |
| PCT/KR2010/002937 WO2010131874A2 (en) | 2009-05-11 | 2010-05-07 | Air conditioner and method for operating same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102460029A CN102460029A (en) | 2012-05-16 |
| CN102460029B true CN102460029B (en) | 2014-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201080025167.3A Active CN102460029B (en) | 2009-05-11 | 2010-05-07 | Air conditioner and method for operating same |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20120131935A1 (en) |
| EP (1) | EP2431677A4 (en) |
| KR (1) | KR20100121961A (en) |
| CN (1) | CN102460029B (en) |
| WO (1) | WO2010131874A2 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101854336B1 (en) * | 2011-10-28 | 2018-06-14 | 엘지전자 주식회사 | Air conditioner and method for controlling the same |
| CN102788005B (en) * | 2012-08-02 | 2015-03-11 | 青岛海信日立空调系统有限公司 | Method for controlling the operation of the compressors in optimized VRV air conditioning system and device thereof |
| CN103968478B (en) * | 2013-02-01 | 2018-02-23 | Lg电子株式会社 | Cooling system and its control method |
| CN104279722B (en) * | 2013-07-11 | 2017-04-12 | 盟立自动化股份有限公司 | Control method of air conditioner energy saving control device |
| JP6338663B2 (en) * | 2014-06-19 | 2018-06-06 | 三菱電機株式会社 | Refrigeration cycle apparatus and refrigeration cycle system |
| JP2016008788A (en) * | 2014-06-25 | 2016-01-18 | ダイキン工業株式会社 | Air conditioning system |
| EP3165849B1 (en) * | 2014-07-02 | 2023-04-26 | Mitsubishi Electric Corporation | Heat source device and heat source system provided with heat source device |
| JP6433582B2 (en) * | 2015-04-21 | 2018-12-05 | 三菱電機株式会社 | Heat source unit |
| CN106322641B (en) * | 2015-07-06 | 2019-06-25 | 约克广州空调冷冻设备有限公司 | Air-conditioner set control method, air-conditioner set, air conditioner group and air conditioner group control method |
| JP6479205B2 (en) * | 2015-10-26 | 2019-03-06 | 三菱電機株式会社 | Air conditioning system |
| CN106671728A (en) * | 2015-11-06 | 2017-05-17 | 福特环球技术公司 | Air conditioning system and control method thereof |
| JP2018063097A (en) * | 2016-10-14 | 2018-04-19 | 三菱重工サーマルシステムズ株式会社 | Air cooling chiller |
| TWI644062B (en) * | 2017-06-26 | 2018-12-11 | 群光電能科技股份有限公司 | Adjusting system |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2010131874A3 (en) | 2011-01-27 |
| EP2431677A2 (en) | 2012-03-21 |
| WO2010131874A2 (en) | 2010-11-18 |
| CN102460029A (en) | 2012-05-16 |
| EP2431677A4 (en) | 2016-04-27 |
| US20120131935A1 (en) | 2012-05-31 |
| KR20100121961A (en) | 2010-11-19 |
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