CN101915481B - Air-conditioning and refrigerating system - Google Patents
Air-conditioning and refrigerating system Download PDFInfo
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- CN101915481B CN101915481B CN2009102584919A CN200910258491A CN101915481B CN 101915481 B CN101915481 B CN 101915481B CN 2009102584919 A CN2009102584919 A CN 2009102584919A CN 200910258491 A CN200910258491 A CN 200910258491A CN 101915481 B CN101915481 B CN 101915481B
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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
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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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/46—Improving electric energy efficiency or saving
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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
- F24F11/63—Electronic processing
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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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
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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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
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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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/87—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units
- F24F11/871—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units by controlling outdoor fans
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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
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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
- F24F2140/60—Energy consumption
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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
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/06—Several compression cycles arranged in parallel
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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
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/07—Details of compressors or related parts
- F25B2400/075—Details of compressors or related parts with parallel compressors
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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
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/22—Refrigeration systems for supermarkets
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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
- F25B2700/17—Speeds
- F25B2700/172—Speeds of the condenser fan
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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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- 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)
- Signal Processing (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
Provided is an air-conditioning and refrigerating system for enabling a demand control to be performed by controlling the operations of an air-conditioning system and a refrigerating system. The air-conditioning and refrigerating system (1) comprises: an air-conditioning system (10) having an outdoor unit (32) to which a plurality of indoor units (34) are connected and performing air conditioning of a building; a refrigerating system (12) having a rack system refrigerator (3) to which a plurality of low-temperature showcases (7) are connected and cooling each of the low-temperature showcases (7); a main controller (4) for generating, based on the commercial-use power of the building, air-conditioning demand data used for varying the power consumption of the air-conditioning system (10) and refrigerating demand data used for varying the power consumption of the refrigerating system (12) and outputting the generated data; and an external controller (14) provided separately from the refrigerating system (12), receiving the refrigerating demand data from the main controller (4), and controlling, based on the refrigerating demand data, the operation of the rack system refrigerator (3).
Description
Technical field
The present invention relates to a kind of commercialization based on facilities such as shops uses power to carry out the technology of demand control.
Background technology
In the past, a plurality of low-temp goods showing cabinets of the goods showing cabinet that refrigerates freezing etc. had been technique known through the refrigeration system that refrigerant line and refrigeration machine are connected in parallel and constitute.Many this low-temp goods showing cabinets are set in shops such as supermarket, when being used for food freezed or refrigerating, also are used for display and sell.In addition, in shops such as supermarket, be provided with the air handling system of the air in the shop being regulated usefulness.In such shop, the commercial power that uses carries out cumulative calculation in preset time, make above-mentioned aggregate-value be no more than set-point, will cut down the commercial power that uses, and carries out so-called demand control.In general, the reduction of commercial use power is (for example, with reference to the patent documentation 1) realized through the running that stops air handling system.On the other hand; In refrigeration system; For example, be provided with the low-pressure lateral pressure sensor of the low-pressure side refrigerant pressure that is used to detect refrigeration machine, for the pressure with this low-pressure side maintains on the given setting value; Through letting the microcomputer that is built in the refrigeration machine control compressor, just can improve the performance (reference example such as patent documentation 2) of saving the energy.Patent documentation 1:JP spy opens the 2000-186844 communique.Patent documentation 2:JP spy opens clear 62-116862 communique.
Summary of the invention
The problem that the present invention will solve
Yet when demand was controlled, except air handling system, people also waited in expectation through the next effect that further obtains to cut down commercial use power of the running of control refrigeration system.Yet, be built in the microcomputer in the refrigeration machine owing to be based on and be suitable for the control of turning round of program that this refrigeration machine constitutes most, so, the indication that is used to control consumed power on this control device, applied and be difficulty very from the outside.The present invention In view of the foregoing proposes, and its objective is provides a kind of air-conditioning refrigeration system that can carry out demand control to the running of air handling system and refrigeration system.The mode that addresses the above problem
To achieve these goals, the present invention provides a kind of air-conditioning refrigeration system, it is characterized in that, comprising: a plurality of indoor sets are linked to each other with off-premises station, building is carried out the air handling system of air conditioning; A plurality of low-temp goods showing cabinets are linked to each other with refrigeration machine, and the refrigeration system that each low-temp goods showing cabinet is cooled off; Based on using power, generate the idle call demand data of the consumed power that is used to change above-mentioned air handling system and be used to change the cooling demand data of the consumed power of above-mentioned refrigeration system, and with the main control unit of these data outputs; And be independent of above-mentioned refrigeration system setting, and receive cooling demand data from above-mentioned main control unit, control the external control device of the running of above-mentioned refrigeration machine according to above-mentioned cooling demand data.
In addition; The invention is characterized in; In above-mentioned air-conditioning refrigeration system, the said external control device can obtain the needed control of the control of staple of the cooling capacity of the above-mentioned refrigeration machine of decision and set, and controls the staple of above-mentioned refrigeration machine according to the operating condition of above-mentioned refrigeration machine.
In addition; Characteristic of the present invention also is; In above-mentioned air-conditioning refrigeration system; The said external control device can obtain to be assembled into the volume controlled desired compression machine control of the compressor in the above-mentioned refrigeration machine and set as above-mentioned control setting, controls the capacity of above-mentioned compressor according to the low-pressure lateral pressure of above-mentioned refrigeration machine.
In addition; Characteristic of the present invention also is; In above-mentioned air-conditioning refrigeration system; The condensing ability that the said external control device can obtain to be assembled into the condenser in the above-mentioned refrigeration machine is controlled needed condenser control and is set as above-mentioned control and set, and controls the condensing ability of above-mentioned condenser according to the high side pressure of above-mentioned refrigeration machine.
In addition, characteristic of the present invention is that also in above-mentioned air-conditioning refrigeration system, above-mentioned main control unit is based on above-mentioned use power, prior to the above-mentioned air handling system of the preferential control of above-mentioned refrigeration system.
In addition; Characteristic of the present invention also is; In above-mentioned air-conditioning refrigeration system, above-mentioned main control unit changes the consumed power of above-mentioned refrigeration system and under the situation about controlling, prior to the condensing ability of the above-mentioned condenser of the preferential control of the capacity of above-mentioned compressor at needs.
In addition, characteristic of the present invention is that also in above-mentioned air-conditioning refrigeration system, thereby above-mentioned refrigeration machine is that any selection determines the refrigeration machine that the staple of cooling capacity freely constitutes from a plurality of kinds.[effect of invention]
According to the present invention; Owing to have the external control device on its structure; This external control device is independent of the refrigeration system setting, receives the cooling demand data from main control unit, controls the running of refrigeration machine based on cooling demand data; So, the control that can change consumed power through this external control device from the main control unit of outside.Thus, can further improve the reduction effect of consumed power, the control of realization demand.Description of drawings Fig. 1 is the ideograph of the air-conditioning refrigeration system structure of expression form of implementation of the present invention.Fig. 2 is the block diagram of expression master controller functional structure.Fig. 3 is the sketch map of an example of expression demand control setting.Fig. 4 is the sketch map of an example of expression volume controlled setting.Fig. 5 is the sketch map of an example of the condensing ability control of expression setting.Fig. 6 is the block diagram of expression compressor controller functional structure.Fig. 7 is the block diagram of expression condenser controller functional structure.Fig. 8 is the flow chart that master controller carries out demand control.Fig. 9 is the flow chart that the expression compressor controller carries out volume controlled.Figure 10 is the flow chart that the expression condenser controller carries out condensing ability control.The explanation of symbol
The 1-air-conditioning refrigeration system, 2-refrigerating circuit, 3-cabinet system refrigeration machine (refrigeration machine), 4-master controller (main control unit), 6-compressor controller; The 7-low-temp goods showing cabinet, 8-condenser controller, 9-compressor, 10-air handling system, 11-condenser; The 12-refrigeration system, 13-condenser fan, 14-peripheral control unit (external control device), 26-low-pressure lateral pressure sensor; 28-high side pressure sensor, 29-power meter, 32-off-premises station, 34-indoor set.
The specific embodiment
Below, with reference to accompanying drawing, form of implementation of the present invention is described.Fig. 1 is the ideograph of structure of the air-conditioning refrigeration system 1 of this form of implementation of expression.As shown in the drawing, air-conditioning refrigeration system 1 comprises: air handling system 10, refrigeration system 12, master controller (main control unit) 4 and peripheral control unit (external control device) 14.On master controller 4, connecting air handling system 10 and peripheral control unit 14 through communication line 24.Have again, on air-conditioning refrigeration system 1, be provided with the power meter 29 that power is used in the commercialization that is used to measure building, be laid with above-mentioned air handling system 10 and refrigeration system 12 in this building.The measured value that obtains is by the way inputed to master controller 4.
Air handling system 10 constitutes the structure that a plurality of indoor sets 34 is connected with off-premises station 32 through refrigerant line 36, carries out the air conditioning of building by means of each indoor set 34.In addition; Though explanation here be in this air handling system 10, be provided with the refrigerant loop formed by off-premises station 32 and indoor set 34 different and independently air-conditioning system be the situation of two systems; But; The number of this system is arbitrarily, and in addition, the off-premises station 32 in each air-conditioning system or the platform number of indoor set 34 also are arbitrarily.
The formation of refrigeration system 12 comprises refrigerating circuit 2, and this refrigerating circuit 2 is parallel-connected to a plurality of low-temp goods showing cabinets 7 on the cabinet system refrigeration machine 3 through as the refrigerant line 5a of liquid line and refrigerant line 5b as gas piping.Cabinet system refrigeration machine 3 comprises: multiple compressors 9; Condenser (condensed device) 11; Many condenser fans (condensed device is used fan) 13; Be used to detect low-pressure lateral pressure sensor 26 and the high side pressure sensor 28 that is used to detect on high-tension side refrigerant pressure (below, be called " high side pressure ") of the refrigerant pressure (below, be called " low-pressure lateral pressure ") of low-pressure side.Every compressor 9 all is a constant volume type compressor, and can change overall capacity through its driving platform number is cooling capacity.In addition, above-mentioned condenser 11 is the condensed devices that can carry out variable control through the driving platform number of condenser fan 13.In following explanation, be that still, these numbers do not constitute the qualification to it under 6 the situation although the platform number of clear compressor 9 is two, the platform number of condenser fan 13.
Each low-temp goods showing cabinet 7 all has expansion valve (decompressor) 15 and cooler 17, and hydraulic control magnetic valve 19 is connected with the inlet of expansion valve 15.Hydraulic control magnetic valve 19 is to be used to control the valve to expansion valve 15 the supply system cryogens, by means of the switching of hydraulic control magnetic valve 19, controls the in-cabinet temperature of low-temp goods showing cabinet 7 through the cooling of cooler 17.That is to say that low-temp goods showing cabinet 7 has the in-cabinet temperature sensor 21 and microcomputer 23 that is used to detect in-cabinet temperature.Microcomputer 23 stores and is set in design temperature ceiling temperature and lower limit temperature up and down in the cabinet, opens hydraulic control magnetic valve 19 during to ceiling temperature, closes magnetic valve 19 during to lower limit temperature, carries out such ON-OFF control.Through this ON-OFF control, the average in-cabinet temperature of low-temp goods showing cabinet 7 is near the interior design temperature of cabinet.In addition, on cabinet system refrigeration machine 3, except low-temp goods showing cabinet 7, can also connect for example other load equipments such as prefabricated cabinet of refrigeration/refrigeration.
Above-mentioned cabinet system refrigeration machine 3; For compressor 9, condenser 11 and the condenser fan 13 of staple of decision cooling capacity respectively based on refrigeration system 12 needed maximum one; From multiple machine, freely select, and freely make up, assemble.At length say; Refrigeration system 12 the necessary maximum one in position is set; By the environmental condition decision of temperature or outside air temperature etc. in design temperature, the shop in the platform number of low-temp goods showing cabinet 7, the cabinet, when refrigeration system 12 is provided with respect to selected certain refrigeration machine that enough and to spare is arranged of the maximum one of such decision.At this moment; Because the maximum one of refrigeration machine determines during fabrication; So; If the refrigeration machine of the suitable maximum one that meets the environmental condition when being provided with does not prepare in manufacturer etc., just have to be provided with maximum one and have certain refrigeration machine of bigger enough and to spare, thereby aspect cooling capacity, cause waste than this.
Relative therewith; In the cabinet system refrigeration machine 3 of this form of implementation, let the condensing ability of compressor capacity or condenser of staple of decision cooling capacity meet maximum one (thermic load) necessary under the set environmental condition, users etc.s can selection freely from the product of same manufacturer or other manufacturers; And be about to certainly that these make up; Freely constitute refrigeration machine, therefore, can constitute refrigeration machine with optimal maximum one.And, in relevant cabinet system refrigeration machine 3, owing to be staple to be made up with the mode that meets necessary maximum one; Therefore; Compare with the refrigeration machine of in the past complete set, can not waste cooling capacity, thereby can realize the cooling system that energy-saving effect is high.In addition, on cabinet system refrigeration machine 3, because need not be with component parts complete set on a framework; So, for example, can be configured in compressor 9 indoor; Condenser 11 and condenser fan 13 are configured in outdoor, can constitute the design that can prevent hot cage effect.In addition, because the space that is provided with of framework is not restricted, thereby the free degree of the platform that can improve machine or the condenser fan 13 of decision condenser 11 and condenser fan 13 when counting.
In this cabinet system refrigeration machine 3; Because the machine or the platform number of compressor 9, condenser 11 and condenser fan 13 are indefinite; So; As the structure that is built-in with microcomputer of in the past refrigeration machine, want to control the capacity of compressor 9 or the condensing ability of condenser 11 is difficult with microcomputer.Given this, in the air-conditioning refrigeration system 1 of this form of implementation, be independent of cabinet system refrigeration machine 3 and be provided with staple that is used for controller cabinet system refrigeration machine 3 and the peripheral control unit 14 that changes cooling capacity.
Peripheral control unit 14 has compressor controller 6 and condenser controller 8, and wherein, compressor controller 6 is used for the capacity of the multiple compressors 9 of controller cabinet system refrigeration machine 3 settings, the condensing ability of condenser controller 8 control condensers 11.And; Compressor controller 6 based on come autonomous controller 4 after state cooling demand data; Can be through each of multiple compressors 9 be carried out the power that ON/OFF changes consumption; In addition, condenser controller 8 is based on this cooling demand data, can be through each of many condenser fans 13 carried out the power that ON/OFF changes consumption.
Fig. 2 is the block diagram of the structure of expression master controller 4 functions.In the figure, control part 40 is as the each several part of maincenter control master controller 4.Input has demand control to set and refrigeration machine control setting in control setting input part 41.Demand control setting is that the demand of air-conditioning refrigeration system 1 is controlled needed set information, and Fig. 3 shows one of them example.
Fig. 3 is the sketch map of an example of expression demand control setting.In demand control, during the demand time limit, be provided with a plurality of judgement period, in each judgement period, aggregate-value is no more than set-point when the demand time limit is finished, and use the aggregate-value decision of power whether to cut down consumed power based on the commercialization of this moment.And; In demand control is set; Control needed setting as relevant demand; Judge among Ta～Td in period at each, will use power aggregate-value Wa～Wd and the machine that stops in order to cut down power consumption is set up correspondence and stipulated as the commercialization whether decision cuts down the threshold value of consumed power.In this demand control was set, air handling system 10 preferentially stopped than refrigeration system 12 when cutting down consumed power.And, even air handling system 10 whole air-conditioning systems stop, need not cutting down under the situation of consumed power as yet; Only stop a condenser fan 13, condensing ability is reduced to non-vanishing scope, even so; Cut down at needs under the situation of consumed power, only stop a compressor 9, capacity is reduced to non-vanishing scope; The cooling capacity of cabinet system refrigeration machine 3 can be kept so as much as possible, consumed power can be cut down again.
The control of above-mentioned refrigeration machine is set the cooling capacity that shows cabinet system refrigeration machine 3 for a change and the required setting of control that determines the staple of this cooling capacity.At length say; In this form of implementation; Control the capacity of compressor 9 based on the low-pressure side refrigerant pressure of cabinet system refrigeration machine 3 (below be called " low-pressure lateral pressure "); In addition, control the condensing ability of condenser 11 based on high-tension side refrigerant pressure (below, be called " high side pressure ").And, through such control, when the running of cabinet system refrigeration machine 3, make 3 runnings of cabinet system refrigeration machine to keep necessary enough compressor capacities of given cooling capacity and condensing ability, realize energy-conservationization of this cabinet system refrigeration machine 3.
Yet; As indicated above, in cabinet system refrigeration machine 3, owing to when being provided with, determined the kind or the platform number of compressor 9, condenser 11 or condenser fan 13; So, externally pack in advance in the controller 14 and be used to control the program of compressor 9 or condenser fan 13.Given this; In master controller 4, import the required condenser control setting of condensing ability control that has the required compressor control of volume controlled of carrying out compressor 9 to set and carry out condenser 11 in the present embodiment, and export to peripheral control unit 14 from this master controller 4.
Fig. 4 is the sketch map of an example of expression compressor control setting.As shown in the drawing,, compressor control stipulated each ON/OFF of compressor 9 and the corresponding relation of total output in setting, a side low from total output begins, and in each ON/OFF combined aspects of compressor 9, indicates the label of level n o1, level n o2... successively.That is to say; In volume controlled, to reduce cooling capacity and reduce under the situation of total output, select than with this moment each compressor 9 ON/OFF organize the little rank numbering of corresponding rank numbering, if can make each compressor 9 carry out ON/OFF through the regulation in the rank numbering of this selection; Just can reduce total output; In contrast, promote cooling capacity and improve under the situation of total output, selects higher rank to number at needs; If the regulation through in the rank numbering of this selection can make each compressor 9 carry out ON/OFF, just can improve total output.
Therefore, in the cabinet system refrigeration machine 3 of this form of implementation, owing to be provided with the constant volume type compressor 9 that two capacity differ from one another, so, as shown in the drawing, can obtain the combination of 4 kinds of ON/OFF states respectively.At this moment; If each capacity of compressor 9 is all identical; Will in 4 kinds of combinations, produce the identical combination of total output, the number of always exporting different combinations can reduce, however the compressor 9 that differs from one another through the use capacity; Can make the number of total output different combinations maximum, thereby can control total output of compressor 9 in more detail.
Fig. 5 is the sketch map of an example of expression condenser control setting.As shown in the drawing, in condenser control is set, stipulated to carry out the high side pressure of on/off with respect to each condenser fan 13, and stipulated to carry out successively the connection of condenser fan 13 along with the raising of high side pressure.Be provided with hysteresis (hysteresis) in order to prevent the vibration (chattering) under the high side pressure of these on/off.In addition, in condensing ability control, the high side pressure of monitoring machine cabinet system refrigeration machine 3; Variation according to this high side pressure lets condenser fan 13 be in the ON state, till arriving cut-in pressure, in addition; Let condenser fan 13 be in the OFF state, till arriving cutout pressure.Thus, only need to drive the condenser fan 13 that the condensing ability that requires with cabinet system refrigeration machine 3 is complementary, therefore, compare with the situation that drives all condenser fans 13 and can cut down consumed power.
In the power measurement values input part 42 in Fig. 2, use power measurement values from the commercialization of power meter 29 input buildings.Control part 40 calculates the aggregate-value that power is used in the commercialization of demand in the time limit based on relevant measured value; And, generate idle call demand data (idle call demand control data) of specifying the air-conditioning system that should stop (OFF) and the cooling demand data (cooling demand control data) of specifying the staple of the cabinet system refrigeration machine 3 that should stop (OFF) based on this aggregate-value and the demand control setting.Air conditioner Department of Communication Force 43 sends to air handling system 10 with above-mentioned idle call demand data, thus, in air handling system 10, lets the air-conditioning system of appointment stop, thereby cuts down the consumed power of air handling system 10.That is, control.Specified compression machine 9 in the cooling demand data of compressor controller Department of Communication Force 44 transmissions is as the data of the machine that stops, and in addition, the appointment condenser fan 13 in the cooling demand data of condenser controller Department of Communication Force 45 transmissions is as the data of the machine that stops.Thus, in cabinet system refrigeration machine 3, let the staple of appointment stop, thereby cut down consumed power.That is, control.
In addition, send above-mentioned compressor control from compressor controller Department of Communication Force 44 to compressor controller 6 and set, in addition, send above-mentioned condenser control from condenser controller Department of Communication Force 45 to condenser controller 8 and set.And volume controlled is carried out in setting based on compressor control in compressor controller 6, in addition, in condenser controller 8, carries out condensing ability control based on condenser control setting.
Fig. 6 is the block diagram of expression compressor controller 6 functional structures.In the figure, the each several part of control part 60 maincenter ground control compressor controller 6 simultaneously, generates the compressor control signal of the ON/OFF of each compressor 9 that is used for 3 assemblings of controller cabinet system refrigeration machine, constitutes the structure that for example is provided with microcomputer.Controller Department of Communication Force 61 through communication line 24 its with master controller 4 between communicate by letter, receive above-mentioned compressor and control setting or cooling demand data.Control is set storage part 62 and is stored the compressor control setting.The detected value of the low-pressure lateral pressure sensor 26 input low-pressure lateral pressures of low-pressure lateral pressure sensor input part 63 from be arranged on cabinet system refrigeration machine 3.Control part 60 is the detected value and the low-pressure lateral pressure setting value of low-pressure lateral pressure relatively, according to the capacity of above-mentioned compressor control setting changing cabinet system refrigeration machine 3.
Specifically, be lower than at low-pressure lateral pressure under the situation of low-pressure lateral pressure setting value, the expression cooling capacity has produced waste, and it is bad that energy saving becomes.In contrast, be higher than at low-pressure lateral pressure under the situation of low-pressure lateral pressure setting value, the expression cooling capacity is not enough, and the cooling performance of low-temp goods showing cabinet 7 is impaired.Thereupon, control part 60 is higher than at low-pressure lateral pressure under the situation of low-pressure lateral pressure setting value, and the rank numbering with above-mentioned volume controlled rule improves " 1 " at every turn; Just can improve total output and improve cooling capacity; In contrast, be lower than at low-pressure lateral pressure under the situation of low-pressure lateral pressure setting value, rank is numbered every minimizing " 1 "; Total output will descend gradually, and cooling capacity will reduce.And control part 60 generates the control signal that only will drive the compressor 9 of designated groups in this rank numbering.In addition, control part 60 generates the control signal that stops a compressor 9 in the work under situation about stopping according to cooling demand data indication compressor 9.Compressor control signal efferent 64 is to the relevant compressor control signal of compressor 9 outputs of cabinet system refrigeration machine 3.
Fig. 7 is the block diagram of expression condenser controller 8 functional structures.In the figure; Control part 80 is as the each several part of maincenter control condenser controller 8; Simultaneously, generate the condenser fan control signal of condenser fan 13 ON/OFF separately that is used for 3 assemblings of controller cabinet system refrigeration machine, constitute the structure that for example is provided with microcomputer.Controller Department of Communication Force 81 through communication line 24 its with master controller 4 between communicate by letter, receive above-mentioned condenser and control setting or cooling demand data.Control is set storage part 82 and is stored above-mentioned control setting.The detected value of the high side pressure sensor 28 input high side pressures of high side pressure sensor input part 83 from be arranged on cabinet system refrigeration machine 3.Control part 80 is set based on the detected value and the control of above-mentioned condenser of high side pressure, generates to make condenser fan 13 carry out the above-mentioned condenser fan control signal that ON/OFF uses.In addition, control part 80 generates the control signal that stops a condenser fan 13 in the work under situation about stopping according to cooling demand data indication condenser fan 13.Condenser fan control signal efferent 84 is to the relevant condenser fan control signal of each condenser fan 13 outputs of cabinet system refrigeration machine 3.
Below, the action of the relevant air-conditioning refrigeration system 1 that constitutes is described.As indicated above, in air-conditioning refrigeration system 1, carry out demand control through master controller 4; Simultaneously; In refrigeration system 12, carry out the volume controlled of compressor 9 through compressor controller 6, carry out the condensing ability control of condenser 11 by means of condenser controller 8.
Fig. 8 is the flow chart of being controlled by the demand that master controller 4 carries out.At the initial stage that is provided with of air-conditioning refrigeration system 1, wait structure input demand control setting (step S1) in master controller 4 according to cabinet system refrigeration machine 3 by the attendant.Then, master controller 4 is resetting to " 0 minute " afterwards with the demand time limit, the timing (step S2) in beginning elapsed time.Afterwards; When the above-mentioned judgement of arrival demand control during period (step S3: be); Master controller 4 is calculated the aggregate-value (step S4) of the commercial power use amount that arrives this judgements period, and control is set based on the demand, judges that whether this aggregate-value is above threshold value (step S5).Surpassing under the situation of threshold value (step S5: be), master controller 4 is controlled setting in order to cut down consumed power based on demand and is generated and export idle call demand data and/or cooling demand data (step S6).Thus, air-conditioning system, compressor 9 or condenser fan 13 stop, thereby can carry out the reduction of consumed power.
Then, master controller 4 judges that whether the demand time limit finish (for example whether passing through 30 minutes) (step S7), if do not finish (step S7: not), return the processing sequence among the determining step S3 that will judge period next time.In addition; When finishing demand, prescribe a time limit (step S7: be); In order to cut down the power of this demand time limit internal consumption; Even and start each machine stop and also can not have problems, needing to generate and output starts the data (step S8) of these machines, the processing sequence that lets demand time limit relatively next time will carry out demand control is returned step S2.
Fig. 9 is the flow chart of compressor controller 6 volume controlled of carrying out.As shown in the drawing, compressor controller 6 obtains low-pressure lateral pressure (step S10) at regular intervals from the low-pressure lateral pressure sensor 26 of cabinet system refrigeration machine 3, and itself and low-pressure lateral pressure setting value are compared (step S11).Surpass under the not enough situation of the cooling capacity of low-pressure lateral pressure setting value and cabinet system refrigeration machine 3 (step S11: be) at low-pressure lateral pressure; Will improve cooling capacity and keep the rank numbering that the condenser control of the cooling performance of low-temp goods showing cabinet 7 sets and improve " 1 " (step S12); Set the generation compressor control signal based on this condenser control, and output to compressor 9 (step S13).
In addition; (step S 11: not) under the situation that low-pressure lateral pressure drops to below the low-pressure lateral pressure setting value and the cooling capacity of cabinet system refrigeration machine 3 is rich; Will reduce cooling capacity and realize that the rank numbering that condenser control that the consumed power of cabinet system refrigeration machine 3 is cut down is set reduces " 1 " (step S14); Set the generation compressor control signal based on this condenser control, and output to compressor 9 (step S13).
In addition, when judging whether low-pressure lateral pressure surpasses the low-pressure lateral pressure setting value, in low-pressure lateral pressure setting value, be provided with hysteresis as judgment standard.That is to say that the situation that surpasses the high pressure of set-point than the low-pressure lateral pressure setting value at low-pressure lateral pressure judges and is " surpassing ", the situation that is lower than the low-pressure of set-point than the low-pressure lateral pressure setting value at low-pressure lateral pressure judges and is " decline ".The set-point here can send to compressor controller 6 from master controller 4 with above-mentioned low-pressure lateral pressure setting value, perhaps, is arranged in advance in the program of this compressor controller 6.
Then; Compressor controller 6 judges whether to receive cooling demand data (step S15); (step S15: not) under situation about not receiving; Processing sequence is turned back to original step S1, under situation about receiving (step S15: be), one compressor control signal (step S16) in the compressor 9 during output will stop to drive.Thus, control stops compressor 9 according to demand, thereby cuts down consumed power.
Figure 10 is the flow chart of the condensing ability control carried out of condenser controller 8.As shown in the drawing, condenser controller 8 obtains high side pressure (step S20) at regular intervals from the high side pressure sensor 28 of cabinet system refrigeration machine 3.And; Condenser controller 8 is set based on this high side pressure and condenser control; Judge and whether to have the condenser fan 13 (step S21) that changes the ON/OFF that condensing ability uses; Under situation about having, generation makes this condenser fan 13 carry out the condenser fan control signal that ON/OFF uses, and exports to condenser fan 13 (step S22).
Then; Condenser controller 8 judges whether to receive cooling demand data (step S23); (step S23: not) under situation about not receiving; Processing sequence is turned back to original step S1, under situation about receiving (step S23: be), generate and export one condenser fan control signal (step S24) in the condenser fan 13 in stopping to drive.Thus, control stops condenser fan 13 according to demand, thereby cuts down consumed power.
As stated, according to this form of implementation, because its structure band peripheral control unit 14; This peripheral control unit 14 is independent of refrigeration system 12 and is provided with; Receive the cooling demand data of autonomous controller 4, and based on the running of cooling demand data controller cabinet system refrigeration machine 3, so; Through this peripheral control unit 14, can change the control of consumed power from the master controller 4 of outside.Thus, with the compared with techniques in the past of only air handling system 10 being carried out demand control, can improve the demand control that consumed power is cut down effect.
In addition; According to this form of implementation; The condensing ability that peripheral control unit 14 can obtain volume controlled or the condenser 11 of compressor 9 is controlled needed control and is set, and based on the operating condition (low-pressure lateral pressure or high side pressure) of cabinet system refrigeration machine 3, changes the control of cooling capacity; Thereby, can further improve the energy saving of cabinet system refrigeration machine 3.
Particularly since cabinet system refrigeration machine 3 can from a plurality of kinds, select compressor 9 or the condenser 11 of decision cooling capacity arbitrarily and can freely assemble; Therefore, can constitute the only refrigeration machine that can not produce the cooling capacity waste corresponding to needed cooling capacity.In addition, in relevant cabinet system refrigeration machine 3, though the control of carrying out cooling capacity through built-in in advance microcomputer difficulty very; But; According to this form of implementation, owing to have said external controller 14, so can realize the control of this cooling capacity.
In addition, above-mentioned form of implementation has only been represented a kind of form of the present invention, and is self-evident, can also make various distortion and application within the scope of the invention.
Claims (7)
1. air-conditioning refrigeration system comprises:
The air handling system that a plurality of indoor sets is linked to each other and carry out the air conditioning in the building with off-premises station through refrigerant line;
The refrigeration system that a plurality of goods showing cabinets is linked to each other with refrigeration machine and each goods showing cabinet is cooled off through refrigerant line;
Based on using power, generate the idle call demand control data of the consumed power that is used to control said air handling system and be used to control the cooling demand control data of the consumed power of said refrigeration system, and with the main control unit of these data outputs; And
Be independent of said refrigeration system setting; Reception is from the cooling demand control data of said main control unit; Based on said cooling demand control data, control the external control device of the running of said refrigeration machine with the mode that meets necessary maximum one.
2. air-conditioning refrigeration system according to claim 1 is characterized in that,
Said external control device can obtain the needed control set information of control of staple of the cooling capacity of the said refrigeration machine of decision, and the staple of controlling said refrigeration machine based on the operating condition and the said control set information of said refrigeration machine.
3. air-conditioning refrigeration system according to claim 2 is characterized in that,
Said external control device can obtain to be assembled into the volume controlled desired compression machine control set information of the compressor in the said refrigeration machine as said control set information, and the capacity of controlling said compressor based on the low-pressure lateral pressure and the said compressor control set information of said refrigeration machine.
4. air-conditioning refrigeration system according to claim 3 is characterized in that,
Said external control device can obtain to be assembled into the condensing ability of the condenser in the said refrigeration machine and control needed condenser control set information as said control set information; And, control the condensing ability of said condenser based on the high side pressure of said refrigeration machine and said condenser control set information.
5. air-conditioning refrigeration system according to claim 4 is characterized in that,
Said main control unit is based on said use power, prior to the said air handling system of the preferential control of said refrigeration system.
6. air-conditioning refrigeration system according to claim 4 is characterized in that,
Said main control unit changes under the situation that the consumed power of said refrigeration system controls, prior to the condensing ability of the said condenser of the preferential control of the capacity of said compressor at needs.
7. according to arbitrary described air-conditioning refrigeration system in the claim 1～6, it is characterized in that,
Said refrigeration machine is any refrigeration machine of selecting to be used to determine the staple of cooling capacity and freely constituting from a plurality of kinds.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008-250037 | 2008-09-29 | ||
| JP2008250037A JP5405076B2 (en) | 2008-09-29 | 2008-09-29 | Air conditioning refrigeration system |
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| CN101915481A CN101915481A (en) | 2010-12-15 |
| CN101915481B true CN101915481B (en) | 2012-10-03 |
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| CN2009102584919A Expired - Fee Related CN101915481B (en) | 2008-09-29 | 2009-09-29 | Air-conditioning and refrigerating system |
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| US (1) | US20110167852A1 (en) |
| EP (1) | EP2333445A4 (en) |
| JP (1) | JP5405076B2 (en) |
| CN (1) | CN101915481B (en) |
| WO (1) | WO2010035470A1 (en) |
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| CN102466304B (en) * | 2010-11-16 | 2014-09-03 | 力博特公司 | Air-conditioning system and control method of condensation fan thereof |
| JP5955115B2 (en) * | 2012-01-24 | 2016-07-20 | 三菱電機株式会社 | Cooling system |
| JP5984456B2 (en) * | 2012-03-30 | 2016-09-06 | 三菱重工業株式会社 | Heat source system control device, heat source system control method, heat source system, power adjustment network system, and heat source machine control device |
| CN102654339B (en) * | 2012-05-11 | 2014-12-31 | 彭渊博 | Cloud refrigeration method and system |
| CN103836773B (en) * | 2012-11-21 | 2016-08-17 | 美的集团股份有限公司 | Multi-online air-conditioning system and shutdown noise control method thereof |
| CN103062846B (en) * | 2013-01-11 | 2015-06-17 | 四川长虹电器股份有限公司 | Outdoor air conditioning unit, integrated air conditioning control system and starting method thereof |
| CN103398447B (en) * | 2013-07-12 | 2015-08-05 | 青岛海信日立空调系统有限公司 | Indoor set load capacity control system and indoor set load capacity control method |
| JP6291756B2 (en) * | 2013-09-13 | 2018-03-14 | オムロン株式会社 | Information processing apparatus, information processing method, program, and recording medium |
| US11009250B2 (en) | 2015-06-30 | 2021-05-18 | Emerson Climate Technologies Retail Solutions, Inc. | Maintenance and diagnostics for refrigeration systems |
| US10240836B2 (en) * | 2015-06-30 | 2019-03-26 | Emerson Climate Technologies Retail Solutions, Inc. | Energy management for refrigeration systems |
| CN105910355B (en) * | 2015-12-04 | 2018-03-23 | 苏州新亚科技有限公司 | A kind of communication means of intelligent object networked control systems |
| US10627146B2 (en) | 2016-10-17 | 2020-04-21 | Emerson Climate Technologies, Inc. | Liquid slugging detection and protection |
| CN112249057B (en) * | 2020-10-27 | 2021-10-22 | 石家庄国祥运输设备有限公司 | Operation control method for refrigeration mode of subway air conditioner at low temperature |
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- 2009-09-25 EP EP09815892.6A patent/EP2333445A4/en not_active Withdrawn
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Also Published As
| Publication number | Publication date |
|---|---|
| CN101915481A (en) | 2010-12-15 |
| JP5405076B2 (en) | 2014-02-05 |
| JP2010078272A (en) | 2010-04-08 |
| US20110167852A1 (en) | 2011-07-14 |
| WO2010035470A1 (en) | 2010-04-01 |
| EP2333445A1 (en) | 2011-06-15 |
| EP2333445A4 (en) | 2014-08-13 |
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