CN104949262A - Heat source device - Google Patents
Heat source device Download PDFInfo
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- CN104949262A CN104949262A CN201510096758.4A CN201510096758A CN104949262A CN 104949262 A CN104949262 A CN 104949262A CN 201510096758 A CN201510096758 A CN 201510096758A CN 104949262 A CN104949262 A CN 104949262A
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- temperature
- heat source
- source machine
- heat
- load
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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
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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
- F24F2110/00—Control inputs relating to air properties
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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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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides a heat source device preventing overly repeat start/stop of a heat source machine, and can reduce a time needed for reaching a proper running numbers; the heat source device (1) comprises the following elements: a heat source machine unit (10) comprising a plurality of heat source machines (11) used for adjusting temperature of a heat medium (CHS) supplied for heat utilization equipment (91); a supply heat medium temperature detector (25) used for detecting the temperature of the CHS supplied for the heat utilization equipment (91) by the heat source machine unit (10); a control portion (12A) determining running numbers of the heat source machines (11) forming the heat source machine unit (10). The control portion (12A) changes a load confirm time according to temperature errors between the temperature of the CHS supplied for the heat utilization equipment (91) and the temperature detected by the supply heat medium temperature detector (25), wherein the load confirm time refers to a time period from heat source machine (11) increasing or decreasing starting to stopping.
Description
Technical field
The present invention relates to heat power supply device, particularly relate to the heat power supply device of the unit number control carrying out heat source machine.
Background technology
In the air-conditioning equipment employing the heat source machines such as water chiller/heater, there is following equipment, that is: in order to supply the hot and cold water of the heat corresponding with thermic load, and multiple stage heat source machine is connected in parallel, carry out making the unit number control (for example, referring to patent document 1) that the heat source machine of the number of units corresponding with thermic load operates.
Patent document 1: Japanese Unexamined Patent Publication 7-35386 publication (Fig. 1 etc.)
In the system of carrying out unit number control, arrange load acknowledging time in order to the start and stop preventing heat source machine excessive, this load acknowledging time is the time making then to carry out after the condition of carrying out increasing level or subtract level is set up the standby Time constant of action increasing level or subtract level.But, if load acknowledging time is set to constant, then until with high-load condition start up system when, thermic load cataclysm when supply the hot and cold water of suitable heat till need spended time.Suppose, when being set as shorter by load acknowledging time, to there is the worry of heat source machine repeatedly starting and stopping.
Summary of the invention
The present invention is in view of above-mentioned problem, and object is to provide the repeatedly starting and stopping that heat source machine can be suppressed excessive, and can shorten the heat power supply device of time required till the suitable operating number arriving heat source machine.
To achieve these goals, such as shown in Figure 1, the feature of the heat power supply device of the 1st aspect of the present invention is to possess: thermal source unit 10, and it has the multiple stage heat source machine 11 regulated the temperature of the thermal medium CHS being supplied in heat utilization equipment 91; Supply heat medium temperature detector 25, it detects the temperature of the thermal medium CHS being supplied in heat utilization equipment 91 from thermal source unit 10; And control part 12A, it determines the operating number of the multiple stage heat source machine 11 forming thermal source unit 10, control part 12A is configured to: the target temperature according to the thermal medium CHS being supplied in heat utilization equipment 91 makes load acknowledging time change with by deviation supply temperature that heat medium temperature detector 25 detects that is supplying temperature, this load acknowledging time be from the increasing level of carrying out heat source machine 11 or subtract level condition establishment until carry out the increasing level of heat source machine 11 or subtract the time of level.
If as above form, then according to the deviation of target temperature and supplying temperature, load acknowledging time is changed, therefore at situation about starting with low load condition inferior prolongation load acknowledging time, thus the repeatedly starting and stopping suppressing heat source machine excessive, and when starting heat power supply device with high-load condition, thermic load cataclysm when shorten load acknowledging time, thus the time required till arriving the suitable operating number of heat source machine can be shortened.
In addition, such as shown in Figure 1, the heat power supply device of the 2nd aspect of the present invention is on the basis of the heat power supply device 1 of the first method of the invention described above, possess and import heat medium temperature detector 26, it detects the temperature of the thermal medium CHR that heat source unit 10 imports, control part 12A is configured to: according to by importing temperature that heat medium temperature detector 26 detects variable quantity at the appointed time that is rate of temperature change, carry out the relation of adjusting deviation and load acknowledging time.
If as above form, then can carry out the setting of the load acknowledging time of the trend of the thermic load being suitable for heat utilization equipment.
In addition, if such as with reference to Fig. 1, Fig. 4 (A) and Fig. 4 (B) represents, then the heat power supply device of the 3rd aspect of the present invention is on the basis of the heat power supply device 1 of the second method of the invention described above, control part 12A is configured to: when making heat source machine 11 increase level, when rate of temperature change is less than standard value, (the straight line VS in Fig. 4 (A)) makes the load acknowledging time of deviation shorter than standard (the broken line PS in Fig. 4 (B)), when rate of temperature change is greater than standard value, (the straight line VL in Fig. 4 (A)) makes the load acknowledging time of deviation longer than standard (the broken line PL in Fig. 4 (B)).
If as above form, then can suppress the repeatedly starting and stopping that heat source machine is excessive, and the time required till the suitable operating number arriving heat source machine can be shortened further.
In addition, if such as with reference to Fig. 1, Fig. 4 (A) and Fig. 4 (C) represents, then the heat power supply device of the 4th aspect of the present invention is on the basis of the second method of the invention described above or the heat power supply device 1 of Third Way, control part 12A is configured to: when making heat source machine 11 subtract grade, when rate of temperature change is greater than standard value, (the straight line VL in Fig. 4 (A)) makes the load acknowledging time of deviation shorter than standard (the broken line QL in Fig. 4 (C)), when rate of temperature change is less than standard value, (the straight line VS in Fig. 4 (A)) makes the load acknowledging time of deviation longer than standard (the broken line QS in Fig. 4 (C)).
If as above form, then can avoid the action of the protective device of heat source machine.
In addition, if such as represent with reference to Fig. 1, Fig. 5, then the heat power supply device of the 5th aspect of the present invention in the first method of the invention described above on the basis of the heat power supply device 1 of either type in Third Way, control part 12A is set as: target temperature is divided into final goal temperature Ttf and provisional target temperature Ttp, supplying temperature first arrives provisional target temperature Ttp than final goal temperature Ttf, final goal temperature Ttf is the temperature of the thermal medium CHS that heat utilization equipment 91 requires, provisional target temperature Ttp is between supplying temperature and final goal temperature.
If as above form, then can suppress the toning of the temperature of the thermal medium being supplied in heat utilization equipment.
In addition, if such as represent with reference to Fig. 1, then the heat power supply device of the 6th aspect of the present invention is on the basis of the heat power supply device 1 of the 5th mode of the invention described above, control part 12A is as under type setting provisional target temperature and final goal temperature, that is: making supplying temperature from exceeding provisional target temperature until the variable quantity arriving the supplying temperature in the unit interval till final goal temperature, being less than the variable quantity of the supplying temperature in unit interval that supplying temperature arrives till provisional target temperature.
If as above form, then can reduce the probability of the temperature overshoot of the thermal medium being supplied in heat utilization equipment.
In addition, if such as represent with reference to Fig. 1, Fig. 5, then as the heat power supply device of the 7th aspect of the present invention on the basis of the 5th mode of the invention described above or the heat power supply device 1 of the 6th mode, control part 12A also can be configured to: to make provisional target temperature Ttp close to the mode of final goal temperature Ttf, and provisional target temperature Ttp is changed.
If as above form, then can reduce the probability of the temperature overshoot of the thermal medium being supplied in heat utilization equipment further.
According to the present invention, the repeatedly starting and stopping that heat source machine is excessive can be suppressed, and the time required till the suitable operating number arriving heat source machine can be shortened.
Accompanying drawing explanation
Fig. 1 is the schematic system diagram of the heat power supply device of embodiments of the present invention.
Fig. 2 is the flow chart of the unit number control of the heat power supply device of embodiments of the present invention.
Fig. 3 is the curve map of the example representing the difference of supplying temperature and target temperature and the relation of load acknowledging time.(A) be applicable to curve map when increasing level, (B) is curve map when being applicable to subtract grade.
Fig. 4 is the curve map of the example representing the difference of supplying temperature and the target temperature regulated according to inlet temperature rate of change and the relation of load acknowledging time.(A) be the curve map representing inlet temperature rate of change, (B) is applicable to curve map when increasing level, and (C) is curve map when being applicable to subtract grade.
Fig. 5 is the curve map be described toning inhibitory control.
Description of reference numerals: 1 ... heat power supply device; 10 ... thermal source unit; 11 ... heat source machine; 12A ... first control panel; 25 ... supplying temperature meter; 26 ... inlet temperature meter; 91 ... air conditioner; CHS ... toward hot and cold water; Ttf ... final goal temperature; Ttp ... provisional target temperature.
Detailed description of the invention
Below, with reference to accompanying drawing, embodiments of the present invention are described.In addition, in the various figures, same or similar Reference numeral is marked to mutually same or equivalent parts, and the repetitive description thereof will be omitted.
First, with reference to Fig. 1, the heat power supply device 1 of embodiments of the present invention is described.Fig. 1 is the schematic system diagram of heat power supply device 1.Heat power supply device 1 possesses thermal source unit 10 as main composition equipment, and this thermal source unit 10 has the multiple stage heat source machine 11 regulated the temperature of the hot and cold water CH as thermal medium.Hot and cold water CH is the medium carried the heat be utilized in as the air conditioner 91 of heat utilization equipment, when freezing at air conditioner 91, becoming cooled cold water, when heating at air conditioner 91, becoming by the hot water heated.
In the present embodiment, three heat source machines 11 that thermal source unit 10 has the first heat source machine 11A, Secondary Heat Source machine 11B, the 3rd heat source machine 11C is similarly formed.In the present embodiment, when mentioning individually three heat source machines 11 similarly formed, being called the first heat source machine 11A, Secondary Heat Source machine 11B, the 3rd heat source machine 11C, when mentioning common character, being referred to as " heat source machine 11 ".Heat source machine 11 imports for the hot and cold water CH returned from air conditioner 91, regulates the temperature of the hot and cold water CH imported, and again to the equipment that air conditioner 91 supplies.In the following description, temperature will be regulated and the hot and cold water CH being supplied in air conditioner 91 is called " toward hot and cold water CHS " in heat source machine 11, the hot and cold water CH turning back to thermal source unit 10 after utilize heat in air conditioner 91 is called " returning hot and cold water CHR ", when not distinguishing both, be only called " hot and cold water CH ".Heat source machine 11 is configured to cool hot and cold water CH as required or to heat.In addition, heat source machine 11 is configured to change the degree (when cooling, making the amplitude that the temperature of hot and cold water CH reduces, when heating, making the amplitude that the temperature of hot and cold water CH rises) regulated the temperature of hot and cold water CH.In other words, be configured to can regulation output (can carry out volume controlled) for heat source machine 11.Heat source machine 11 has the unit (not shown) of the temperature of the unit (not shown) of the temperature of time hot and cold water CHR that detection imports and the past hot and cold water CHS of detection supply.
The first control panel 12A is provided with at the first heat source machine 11A.First control panel 12A is configured to control the running making the first heat source machine 11A carry out cooling hot and cold water CH or the running of carrying out heating hot and cold water CH.In addition, the temperature detecting unit (all not shown) that first control panel 12A is configured to the temperature detecting unit returning hot and cold water CHR and the past hot and cold water CHS that can have from the first heat source machine 11A receives temperature signal, regulates (volume controlled) the output of the first heat source machine 11A.In addition, the first control panel 12A is configured to control signal of can giving and accepting between other equipment utilizing signal cable to be connected, thus can control the action of other equipment that have sent control signal.First control panel 12A is configured to utilize signal cable to be connected with the first hot and cold water pump 13A as one of other equipment, thus can control the start and stop of the first hot and cold water pump 13A.
Be supplied to that hot and cold water CHS flows through first is connected to the first heat source machine 11A toward one end of hot water pipe 14A and one end of first time hot water pipe 17A supplying back hot and cold water CHR to flow through.The first hot and cold water pump 13A is equipped at first time hot water pipe 17A.First heat source machine 11A is configured to can by the startup of the first hot and cold water pump 13A, hot and cold water CHR is imported back via first time hot water pipe 17A, and the temperature of returning hot and cold water CHR imported is regulated, and be supplied in first toward hot water pipe 14A as toward hot and cold water CHS.
Secondary Heat Source machine 11B and the 3rd heat source machine 11C is configured to identical with the first heat source machine 11A respectively.Be provided with the second control panel 12B at Secondary Heat Source machine 11B, and be connected with second toward hot water pipe 14B one end and be equipped with one end of second go back to hot water pipe 17B of the second hot and cold water pump 13B.Be configured to identical with around the first heat source machine 11A around Secondary Heat Source machine 11B, the second control panel 12B around Secondary Heat Source machine 11B, the second hot and cold water pump 13B, second are configured to respectively toward hot water pipe 14B, second time hot water pipe 17B: play with the first control panel 12A around the first heat source machine 11A, the first hot and cold water pump 13A, first toward the identical effect of hot water pipe 14A, first time hot water pipe 17A and function.
Be provided with the 3rd control panel 12C at the 3rd heat source machine 11C, and be connected with the 3rd toward hot water pipe 14C one end and be equipped with one end of the 3rd go back to hot water pipe 17C of the 3rd hot and cold water pump 13C.Be configured to identical with around the first heat source machine 11A around 3rd heat source machine 11C, the 3rd control panel 12C around the 3rd heat source machine 11C, the 3rd hot and cold water pump 13C, the 3rd are configured to respectively toward hot water pipe 14C, the 3rd time hot water pipe 17C: play with the first control panel 12A around the first heat source machine 11A, the first hot and cold water pump 13A, first toward the identical effect of hot water pipe 14A, first time hot water pipe 17A and function.In addition, first control panel 12A, the second control panel 12B, the 3rd control panel 12C have equal function respectively, except can to carry out and except the volume controlled of each heat source machine 11 established, the unit number control etc. of the heat source machine 11 of thermal source unit 10 can also be managed, but in the present embodiment, first control panel 12A is set as master board, thus the control of heat power supply device 1 entirety of the unit number control of the heat source machine 11 of thermal source unit 10 etc., undertaken by the first control panel 12A.
One end is connected to first of the first heat source machine 11A and is connected to second of Secondary Heat Source machine 11B toward the other end of hot water pipe 14A, one end and is connected to the 3rd of the 3rd heat source machine 11C the toward the other end of hot water pipe 14B, one end toward the other end of hot water pipe 14C, is connected to toward header box 15.The other end that one end is connected to the other end of first time hot water pipe 17A of the first heat source machine 11A, one end is connected to second time hot water pipe 17B of Secondary Heat Source machine 11B, one end are connected to the other end of the 3rd time hot water pipe 17C of the 3rd heat source machine 11C, are connected to back header box 16.Be connected by bypass pipe 18 toward header box 15 with time header box 16.Differential pressure regulating valve 19 is equipped at bypass pipe 18.
Be configured to the past hot and cold water CHS imported from each heat source machine 11A, 11B, 11C is mixed toward header box 15.One end for the mixed past short tube 24 toward hot and cold water CHS flowing is connected to toward header box 15.The other end toward short tube 24 will be connected to toward the load of hot and cold water CHS importing air conditioner 91 toward pipe 94.Be equipped the secondary pump 92 of past hot and cold water CHS towards air conditioner 91 pressurized delivered toward pipe 94 at load.The supplying temperature meter 25 of the temperature detected toward hot and cold water CHS is being provided with toward short tube 24.Supplying temperature meter 25 is equivalent to supply heat medium temperature detector.Supplying temperature meter 25 is configured to: utilize signal cable to be connected with the first control panel 12A, thus the temperature detected can be sent to the first control panel 12A as signal.
Header box 16 is connected to back for the one end returning time short tube 27 that hot and cold water CHR flows returned from air conditioner 91.By returning of discharging from air conditioner 91 load that hot and cold water CHR imports to back header box 16 also pipe 97 be connected to back the other end of short tube 27.The inlet temperature meter 26 of the temperature detecting back hot and cold water CHR is provided with at time short tube 27.Inlet temperature meter 26 is equivalent to import heat medium temperature detector.Inlet temperature meter 26 is configured to utilize signal cable to be connected with the first control panel 12A, thus the temperature detected can be sent to the first control panel 12A as signal.Return header box 16 be configured to can by import from air conditioner 91 return hot and cold water CHR be dispensed to first time hot water pipe 17A, second time hot water pipe 17B, the 3rd time hot water pipe 17C each.
Continue the effect that heat power supply device 1 is described with reference to Fig. 1.If the first control panel 12A as master board is received in air conditioner 91 and produces the thermic load that process and require to supply the instruction toward hot and cold water CHS, then first the first control panel 12A starts the first hot and cold water pump 13A, then starts the first heat source machine 11A.By starting the first hot and cold water pump 13A, hot and cold water CH flows toward hot water pipe 14A and first time hot water pipe 17A first.Be conditioned in the temperature of hot and cold water CH of flowing the first heat source machine 11A in operation process, thus arrive toward header box 15 toward hot water pipe 14A via first as toward hot and cold water CHS.Past hot and cold water CHS toward header box 15 is delivered to air conditioner 91 by secondary pump 92, utilizes the heat of possessing toward hot and cold water CHS in air conditioner 91.Past hot and cold water CHS temperature when air conditioner 91 freezes of carrying out heat utilization rises, and when air conditioner 91 heats, temperature reduces, thus becomes back hot and cold water CHR.What flow out from air conditioner 91 returns hot and cold water CHR, flows, and flow into the first heat source machine 11A via returning header box 16 at first time hot water pipe 17A.Flow into the temperature of returning hot and cold water CHR of the first heat source machine 11A, be again conditioned and become toward hot and cold water CHS, thus towards flowing in hot water pipe 14A toward header box 15 first, below, above-mentioned effect repeatedly.
When only with the running of the first heat source machine 11A, the process of the thermic load of air conditioner 91 is insufficient, the first control panel 12A starts the second hot and cold water pump 13B and Secondary Heat Source machine 11B, makes them act in the same manner as around the first heat source machine 11A.Even if when with the running of the first heat source machine 11A and Secondary Heat Source machine 11B two, when the thermic load process of air conditioner 91 is also insufficient, first control panel 12A starts the 3rd hot and cold water pump 13C and the 3rd heat source machine 11C, makes them act in the same manner as around the first heat source machine 11A.On the other hand, when the running of multiple stage heat source machine 11 contrasts the thermic load of air conditioner 91 and remains, stopping a heat source machine 11, even if when also remaining when operating with a heat source machine 11, stopping the running of whole heat source machine 11.Like this, make multiple stage heat source machine 11 suitably increase level or subtract level, if make the suitable number of units corresponding with the thermic load of air conditioner 91 operate, then can extend the time that heat source machine 11 operates in high efficiency region, because of but preferred.
Increase level making multiple stage heat source machine 11 or subtract level and make in the unit number control of suitable number of units running, in order to the start and stop preventing heat source machine 11 excessive, usually load acknowledging time is provided with, the increasing level that this load acknowledging time is thermic load from contrast air conditioner 91 and carries out heat source machine 11 or the condition subtracting level increase level or stipulated time standby till subtracting level until actual carrying out after setting up.Load acknowledging time was set as the constant time in the past, when therefore starting with high-load condition, the thermic load cataclysm of air conditioner 91 when, till the heat source machine 11 of the running number of units suitable for the thermic load of air conditioner 91, need considerable time.On the other hand, in order to foreshorten to the time of the suitable operating number of the heat source machine 11 arrived when starting, when load acknowledging time is set as shorter, such as to possess the situation of spended time till the effect of level appears increasing in the more and heat source machine of the water yield inferior until intrasystem, repeatedly carry out the start and stop of heat source machine 11 sometimes, thus ignore the meaning arranging and prevent the load acknowledging time of the excessive start and stop of heat source machine 11.In order to avoid above-mentioned defect, in heat power supply device 1, carry out following control.
Fig. 2 is the flow chart of the unit number control of heat power supply device 1.In the following description, when mentioning the structure of heat power supply device 1, suitably with reference to Fig. 1.In addition, as mentioned above, even if in the first control panel 12A, the second control panel 12B, the 3rd control panel 12C, any one all can carry out in the control of heat power supply device 1, but be configured in the present embodiment: the first control panel 12A is set as master board, and the first control panel 12A carries out the unit number control of following explanation.If the first control panel 12A starts the running of heat power supply device 1, then the mark increasing level proceeding heat source machine 11 and the condition that subtracts level set up is (hereinafter referred to as " condition continues mark f ".) be set to 0 (S1).Next, using the temperature toward hot and cold water CHS detected from supplying temperature meter 25 (supplying temperature Ts) and detected by inlet temperature meter 26 return the temperature (inlet temperature Tr) of hot and cold water CHR as Signal reception (S2).
Then, the first control panel 12A, based on the temperature (target temperature Tt) supplying temperature Ts and design being supplied in the past hot and cold water CHS of air conditioner 91, calculates the operating number (S3) of heat source machine 11.In the present embodiment, when freezing, when deducting temperature that target temperature Tt obtains from supplying temperature Ts more than 1 DEG C, the condition making the operating number of heat source machine 11 increase by one is set up, when the temperature that obtains deducting target temperature Tt from supplying temperature Ts is less than-1 DEG C, the condition making the operating number of heat source machine 11 reduce is set up.On the other hand, when heating, when deducting temperature that target temperature Tt obtains from supplying temperature Ts and being less than-1 DEG C, the condition making the operating number of heat source machine 11 increase by one is set up, when deducting temperature that target temperature Tt obtains from supplying temperature Ts more than 1 DEG C, the condition making the operating number of heat source machine 11 reduce is set up.If the first control panel 12A calculates the operating number of heat source machine 11, then Rule of judgment continues whether mark f is more than 1 (S4), when not being more than 1, calculates load acknowledging time Sc (S5).
At this with reference to Fig. 3, the load acknowledging time Sc of the unit number control of heat power supply device 1 is described.Fig. 3 (A) represents the curve map of load acknowledging time Sc when increasing level, and Fig. 3 (B) is the curve map of the load acknowledging time Sc represented when to subtract grade.Two curve maps all get the absolute value of the difference of supplying temperature Ts and target temperature Tt | and Ts-Tt| is transverse axis, and getting load acknowledging time Sc is the longitudinal axis.According to Fig. 3, in heat power supply device 1, with absolute value | Ts-Tt| is less, in other words, supplying temperature Ts is more close to target temperature Tt, the then mode that more extends of load acknowledging time Sc, according to the absolute value of the difference of supplying temperature Ts and target temperature Tt | Ts-Tt| and load acknowledging time Sc is changed.Now, if with target temperature Tt for benchmark, then load acknowledging time Sc can be changed according to the deviation of supplying temperature Ts and target temperature Tt.Accordingly, when the difference of supplying temperature Ts to target temperature Tt is larger, carry out the increasing level of heat source machine 11 with shorter interval or subtract level, on the contrary, when the difference of supplying temperature Ts to target temperature Tt is less, extend to and make heat source machine 11 carry out increasing level or the interval till subtracting level, thus the generation of toning can be suppressed.In addition, from the view point of avoiding heat source machine 11 to start simultaneously, load acknowledging time Sc is set with minimum, at absolute value | and Ts-Tt| is in the region of more than setting, and load acknowledging time Sc is fixed as minimum.In addition, in time becoming to subtract grade shown in Fig. 3 (B) than absolute value little during increasing level shown in Fig. 3 (A) | till Ts-Tt|, load acknowledging time Sc is minimum.In order to avoid the surplus supply of hot and cold water CH; heat source machine 11 possesses the upper lower limit value of the temperature of the hot and cold water CH by suitably determining and makes the protective device that heat source machine 11 stops; when with identical absolute value when increasing level | the relation of Ts-Tt| and load acknowledging time Sc has carried out subtracting level; likely cause heat source machine 11 to stop because of the action of protective device; therefore when to subtract grade; as shown in Fig. 3 (B), be set as the direction more easily subtracting level.The absolute value of the graphical representation of above-mentioned Fig. 3 | the relation of Ts-Tt| and load acknowledging time Sc, is previously stored in the first control panel 12A.
Again turn back to Fig. 2, proceed the explanation of the unit number control of heat power supply device 1.If the first control panel 12A contrasts the relation shown in Fig. 3 and calculates load acknowledging time Sc, then the condition that when judging to calculate the operating number of heat source machine 11, whether the result of (S3) makes heat source machine 11 carry out increasing level sets up (whether the first control panel 12A is judged as making heat source machine 11 increase level) (S6).When the condition carrying out increasing level is set up, judge whether when condition is set up, have passed through the load acknowledging time Sc (S7) calculated operation (S5).When without load acknowledging time Sc, continuing condition to indicate that f adds 1 rear (S8), return the operation (S2) again detecting supplying temperature Ts and inlet temperature Tr, and enter the operation (S3) of the operating number calculating heat source machine 11.Then, continue whether mark f is in the operation (S4) of more than 1 at Rule of judgment, when for more than 1, skip the operation (S5) of calculated load acknowledging time Sc, enter the operation (S6) judging to make heat source machine 11 to carry out increasing the condition of level whether to set up.
Judging in the operation (S6) whether the condition making heat source machine 11 carry out increasing level is set up, when the condition carrying out increasing level is set up (when condition continues to indicate that f is more than 1, condition is set up and is completed), judge whether when condition is set up, have passed through the load acknowledging time Sc (S7) that calculating is complete operation (S5), when have passed through load acknowledging time Sc, judge whether heat source machine 11 is total running (S9).When heat source machine 11 is in total operation process, condition is continued mark f and be set to 0 (S10), and turn back to the operation (S2) again detecting supplying temperature Ts and inlet temperature Tr.In addition, when have passed through load acknowledging time Sc after setting up from the condition making heat source machine 11 increase level, when heat source machine 11 is in total operation process, condition being continued to indicate that f is set to 0 is because be not the process waiting for load acknowledging time Sc under the state that cannot increase level physically, but after operating number (S3) change of the heat source machine 11 calculated, can promptly apply new load acknowledging time Sc.Judging that in the operation (S9) whether heat source machine 11 operates totally, when the heat source machine 11 operated is not total, the first control panel 12A carries out the increasing level (S11) of heat source machine 11.If carry out the increasing level of heat source machine 11, then condition is continued mark and be set to 0 (S12), and turn back to the operation (S2) detecting supplying temperature Ts and inlet temperature Tr.
Judging in the operation (S6) whether the condition of carrying out the increasing level of heat source machine 11 is set up, carrying out in the invalid situation of condition increasing level, judging whether the condition subtracting level of carrying out heat source machine 11 is set up (whether the first control panel 12A is judged as making heat source machine 11 carry out subtracting level) (S13).Carrying out in the invalid situation of condition subtracting level, condition is being continued mark and be set to 0 (S14), and turning back to the operation (S2) detecting supplying temperature Ts and inlet temperature Tr.On the other hand, judging in the operation (S13) whether the condition subtracting level of carrying out heat source machine 11 is set up, when the condition carrying out subtracting level is set up, judge whether when condition is set up, have passed through the load acknowledging time Sc (S15) calculated operation (S5).When without load acknowledging time Sc, continuing condition to indicate that f adds 1 rear (S16), turn back to the operation (S2) again detecting supplying temperature Ts and inlet temperature Tr.On the other hand, judging whether have passed through in the operation (S15) of load acknowledging time Sc, when have passed through load acknowledging time Sc, judge whether that more than two heat source machines 11 operate (S17).More than two when running, what the first control panel 12A carried out heat source machine 11 subtracts level (S18).If that carries out heat source machine 11 subtracts level, then condition is continued mark and be set to 0 (S19), and turn back to the operation (S2) detecting supplying temperature Ts and inlet temperature Tr.On the other hand, judging whether in the operation (S17) that more than two heat source machines 11 operate, when do not operate more than two, first control panel 12A makes a last stopping, namely stop the running (S20) of thermal source unit 10, thus terminate the unit number control of heat power supply device 1.
As described above, heat power supply device 1 according to the present embodiment, when the difference of supplying temperature Ts and target temperature Tt is larger, by shortening load acknowledging time Sc, thus can shorten the time required till the heat source machine 11 of the suitable number of units that operates.On the other hand, when the difference of supplying temperature Ts and target temperature Tt is less, extends load acknowledging time Sc, thus the excessive start and stop of heat source machine 11 can be suppressed.
But, effectively suppress the start and stop that time required till the heat source machine 11 of the suitable number of units that operates, heat source machine 11 are excessive, can according to the amount (possessing the water yield) of the hot and cold water CH circulated at heat power supply device 1 and secondary side (air conditioner 91), change at the utilization obstacle etc. of the heat of secondary side (air conditioner 91).Such as, variable quantity (hereinafter referred to as " inlet temperature rate of change ") within the unit interval of returning the temperature of hot and cold water CHR importing thermal source unit 10 is larger, existing is regulated the past hot and cold water CHS after temperature easily close to the trend of target temperature Tt by heat source machine 11, therefore from the view point of stability, be preferably and extend load acknowledging time Sc when heat source machine 11 increases level, from the view point of suppression toning, be preferably and shorten load acknowledging time Sc when heat source machine 11 subtracts grade.When inlet temperature rate of change is less, on the contrary, be preferably and shorten load acknowledging time Sc when the increasing level of heat source machine 11, extend load acknowledging time Sc when the subtracting grade of heat source machine 11.
Fig. 4 represents the curve map of the situation regulating load acknowledging time Sc according to inlet temperature rate of change.Fig. 4 (A) is the curve map representing inlet temperature rate of change, and Fig. 4 (B) represents the curve map of load acknowledging time Sc when increasing level, and Fig. 4 (C) is the curve map of the load acknowledging time Sc represented when to subtract grade.The curve map of the inlet temperature rate of change that Fig. 4 (A) represents, transverse axis is the time, and the longitudinal axis is the variable quantity of the temperature (inlet temperature Tr) detected by inlet temperature meter 26.In Fig. 4 (A), straight line VM is after have passed through official hour Sp (such as 60 seconds), and inlet temperature Tr changes delta t DEG C (such as 0.5 DEG C), is set to standard value by this value.Straight line VM such as can determine that 10% of the rated value (such as 5 DEG C of differences) of the gateway temperature difference for heat source machine 11 changes in official hour Sp.Straight line VL illustrates after have passed through official hour Sp, and inlet temperature Tr changes 2 × Δ t DEG C (such as 1.0 DEG C), and inlet temperature rate of change is greater than standard (straight line VM).Straight line VS illustrates after have passed through official hour Sp, and inlet temperature Tr changes 1/2 × Δ t DEG C (such as 0.25 DEG C), and inlet temperature rate of change is less than standard (straight line VM).
Fig. 4 (B) and the curve map shown in the curve map shown in Fig. 4 (C) with Fig. 3 (A) and Fig. 3 (B) same, transverse axis is the absolute value of the difference of supplying temperature Ts and target temperature Tt | Ts-Tt|, the longitudinal axis is load acknowledging time Sc.Broken line PM in Fig. 4 (B) illustrates the absolute value that inlet temperature rate of change (with reference to Fig. 4 (A)) is (straight line VM) during standard | the relation of Ts-Tt| and load acknowledging time Sc, and consistent with the broken line shown in Fig. 3 (A).The absolute value of (straight line VL) when broken line PL illustrates that inlet temperature rate of change is greater than standard | the relation of Ts-Tt| and load acknowledging time Sc, and compared with during standard, load acknowledging time Sc is set as relatively long.The absolute value of (straight line VS) when broken line PS illustrates that inlet temperature rate of change is less than standard | the relation of Ts-Tt| and load acknowledging time Sc, and compared with during standard, load acknowledging time Sc is set as relatively short.Broken line QM in Fig. 4 (C) illustrates the absolute value that inlet temperature rate of change (with reference to Fig. 4 (A)) is (straight line VM) during standard | the relation of Ts-Tt| and load acknowledging time Sc, and consistent with the broken line shown in Fig. 3 (B).The absolute value of (straight line VL) when broken line QL illustrates that inlet temperature rate of change is greater than standard | the relation of Ts-Tt| and load acknowledging time Sc, and compared with during standard, load acknowledging time Sc is set as relatively short.The absolute value of (straight line VS) when broken line QS illustrates that inlet temperature rate of change is less than standard | the relation of Ts-Tt| and load acknowledging time Sc, and compared with during standard, load acknowledging time Sc is set as relatively long.
In addition, the suppression of toning also contributes to regulating the volume controlled of heat source machine 11.Such as, when the difference of supplying temperature Ts and target temperature Tt is larger, if increase the output of heat source machine 11, then supplying temperature Ts accelerates close to target temperature Tt, then likely makes supplying temperature Ts directed overshoot temperature Tt and toning on the contrary.Therefore in order to suppress toning, also can control as follows.
Fig. 5 is the curve map be described toning inhibitory control.Curve map shown in Fig. 5, transverse axis is the time, and the longitudinal axis is temperature.In the curve map shown in Fig. 5, actual measurement line Er illustrates the temperature (supplying temperature Ts) detected by supplying temperature meter 25, and setting value line Es illustrates the setting value of the temperature toward hot and cold water CHS.In the toning inhibitory control of heat power supply device 1, target temperature Tt is divided into final goal temperature Ttf and provisional target temperature Ttp.Final goal temperature Ttf is the temperature of the past hot and cold water CHS that air conditioner 91 requires, is equivalent to " the target temperature Tt " that illustrate so far referring to figs. 1 through Fig. 4.Provisional target temperature Ttp is the arbitrary temperature be arranged between supplying temperature Ts and final goal temperature Ttf tentatively.
Curve map shown in Fig. 5 illustrates the example to the situation that hot and cold water CH cools.Such as observed at the temperature T0 of moment S0, the supplying temperature Ts initial (until moment about S1) that actual measurement line Er represents deviates from larger from final goal temperature Ttf.First control panel 12A is initial as represented in setting value line Es, and the temperature T1 between supplying temperature Ts and final goal temperature Ttf is set as provisional target temperature Ttp.Wherein, even if be set as that the temperature T1 of provisional target temperature Ttp starts to reduce the output of heat source machine 11 after supplying temperature Ts arrives temperature T1 at first, also thereafter in the scope that supplying temperature is not less than final goal temperature Ttf, can become as much as possible close to the temperature of final goal temperature Ttf.If due in S1, supplying temperature Ts is reduced to the temperature T1 being set as provisional target temperature Ttp at first, then the first control panel 12A makes provisional target temperature Ttp reset at any time in the mode of the temperature reducing regulation in each bit time successively.Until supplying temperature Ts arrival final goal temperature Ttf (in Figure 5, from moment S1 to moment S2), proceed this action.After supplying temperature Ts arrives final goal temperature Ttf, setting value line Es is consistent with final goal temperature Ttf.
As mentioned above, make provisional target temperature Ttp move closer to final goal temperature Ttf, thus the probability of supplying temperature Ts toning can be made to reduce.In addition, in the curve map shown in Fig. 5, after supplying temperature Ts arrival is set as the temperature T1 of provisional target temperature Ttp at first, make provisional target temperature Ttp pro rata (point-blank) decline towards final goal temperature Ttf, but the curve-like that also can pass through along with the time and reduce with the reduction amplitude of the provisional target temperature Ttp in the unit interval, provisional target temperature Ttp is declined towards final goal temperature Ttf, also provisional target temperature Ttp can be made to be maintained constant with the arbitrary unit interval and after have passed through the arbitrary unit interval, reduce the stepped decline of mode of the temperature of regulation quickly.Or, also provisional target temperature Ttp can be considered as the temperature T1 of initial setting, at actual measurement line Er by after temperature T1, with final goal temperature Ttf for target.Now, also can to exceed provisional target temperature Ttp (temperature T1) from supplying temperature Ts until arrive the variable quantity of the supplying temperature Ts in the unit interval of final goal temperature Ttf, be less than until supplying temperature Ts arrives the mode of the variable quantity of the supplying temperature Ts in the unit interval of provisional target temperature Ttp, setting provisional target temperature Ttp and final goal temperature Ttf.Toning inhibitory control as described above, exist supplying temperature Ts and final goal temperature Ttf deviate from the startup of larger trend time carry out, be effective especially, but when also can be applied to startup beyond normal operation time.
In the above description, heat source machine 11 is the devices (such as hot and cold water generation machine) that optionally can generate cold and hot and warm any one party according to situation, but also can be only generate cold and hot heat source machine (such as refrigerator), or only generate warm heat source machine (heat pump of such as narrow sense).
In the above description, thermal source unit 10 is made up of three heat source machines 11, but also can be made up of the multiple stage heat source machine 11 beyond two or five etc. three.
In the above description, possess past header box 15 and return header box 16, but also can replace header box and above connect other pipe arrangements at a pipe arrangement (such as first toward hot water pipe 14A).Now, connect the pipe arrangement of other pipe arrangements, the bore of joining part also can be made to increase.
In the above description, heat utilization equipment is air conditioner (air-conditioning unit), but heat power supply device 1 also can to the equipment supply beyond the air conditioner such as fan coil, refrigerating cabinet toward hot and cold water CHS.
In the above description, thermal medium is hot and cold water CH, but can be cold water or hot water, or also can be the fluids such as anti-icing fluid beyond water.
In the above description, start running by the order of the first heat source machine 11A, Secondary Heat Source machine 11B, the 3rd heat source machine 11C, but in order to load equalization, because accumulation is so far less for the duration of runs, therefore start running in order, also suitably can change the boot sequence of multiple heat source machine 11.In addition, produce the running of difference the duration of runs in accumulation if carry out, then multiple stage heat source machine can be avoided simultaneously to arrive maintenance period.
In the above description, be the operating number calculating heat source machine 11 based on the temperature toward hot and cold water CHS detected from supplying temperature meter 25, but also can calculate the operating number of heat source machine 11 based on the temperature of returning hot and cold water CHR detected by inlet temperature meter 26.When calculating the operating number of heat source machine 11 based on the temperature of returning hot and cold water CHR detected by inlet temperature meter 26, typically, except the temperature of returning hot and cold water CHR detected by inlet temperature meter 26, also basis is supplied in target temperature Tt, the rated specification temperature difference of heat source machine 11, the setting of numbers of heat source machine 11 of the past hot and cold water CHS of air conditioner 91, calculates the operating number of the heat source machine 11 needed for thermic load process of air conditioner 91.
In the above description, when freezing, when deducting temperature that target temperature Tt obtains from supplying temperature Ts more than 1 DEG C, the condition making the operating number of heat source machine 11 increase by one is set up, when deducting temperature that target temperature Tt obtains from supplying temperature Ts lower than-1 DEG C, the condition making the operating number of heat source machine 11 reduce one is set up, when heating, when deducting temperature that target temperature Tt obtains from supplying temperature Ts lower than-1 DEG C, the condition making the operating number of heat source machine 11 increase by one is set up, when deducting temperature that target temperature Tt obtains from supplying temperature Ts more than 1 DEG C, the condition making the operating number of heat source machine 11 reduce one is set up, but the temperature difference that the increasing level of carrying out heat source machine 11 or the condition subtracting level are set up also can suitably change.
In the above description, supply heat medium temperature detector is made up of supplying temperature meter 25, but the temperature detecting unit toward hot and cold water CHS (not shown) that also can be had from each heat source machine 11 is formed.In this case, replace the temperature detected by supplying temperature meter 25, the mean value of the temperature using the temperature detecting unit toward hot and cold water CHS (not shown) had from each heat source machine 11 to detect, thus also can omit supplying temperature meter 25.In addition, import heat medium temperature detector and be made up of inlet temperature meter 26, but the temperature detecting unit (not shown) returning hot and cold water CHR that also can be had by each heat source machine 11 is formed.In this case, replace the temperature detected by inlet temperature meter 26, and the mean value of the temperature using the temperature detecting unit (not shown) returning hot and cold water CHR had by each heat source machine 11 to detect, thus also can omit inlet temperature meter 26.
In the above description, the running of heat power supply device 1 of the first control panel 12A to the unit number control comprising heat source machine 11 controls, but also the second control panel 12B or the 3rd control panel 12C can be set as that master board carrys out the running of control of heat source device 1.Or, the first control panel 12A, the second control panel 12B, the 3rd control panel 12C also can be made separately to carry out the start and stop, volume controlled etc. of the heat source machine 11 belonging to them, and the control device controlled heat power supply device 1 is set separately.
Claims (7)
1. a heat power supply device, is characterized in that, possesses:
Thermal source unit, it has the multiple stage heat source machine regulated the temperature of the thermal medium being supplied in heat utilization equipment;
Supply heat medium temperature detector, it detects the temperature of the described thermal medium being supplied in described heat utilization equipment from described thermal source unit; And
Control part, the operating number of heat source machine described in the multiple stage of the described thermal source unit of its decision formation,
Described control part is configured to: according to the target temperature of described thermal medium and the deviation of the temperature utilizing described supply heat medium temperature detector to detect that is supplying temperature that are supplied in described heat utilization equipment, load acknowledging time is changed, this load acknowledging time be from carry out described heat source machine increasing level or subtract level condition set up until carry out the increasing level of described heat source machine or subtract the time of level.
2. heat power supply device according to claim 1, is characterized in that,
Possess and import heat medium temperature detector, it detects the temperature of the described thermal medium imported to described thermal source unit,
Described control part is configured to: according to the temperature utilizing described importing heat medium temperature detector to detect variable quantity at the appointed time that is rate of temperature change, regulate the relation of described deviation and described load acknowledging time.
3. heat power supply device according to claim 2, is characterized in that,
Described control part is configured to: when making described heat source machine increase level, make when described rate of temperature change is less than standard value the described load acknowledging time of described deviation shorter than standard, make when described rate of temperature change is greater than standard value the described load acknowledging time of described deviation longer than standard.
4. heat power supply device according to claim 2, is characterized in that,
Described control part is configured to: when making described heat source machine subtract grade, make when described rate of temperature change is greater than standard value the described load acknowledging time of described deviation shorter than standard, make when described rate of temperature change is less than standard value the described load acknowledging time of described deviation longer than standard.
5. heat power supply device according to claim 3, is characterized in that,
Described control part is configured to: when making described heat source machine subtract grade, make when described rate of temperature change is greater than standard value the described load acknowledging time of described deviation shorter than standard, make when described rate of temperature change is less than standard value the described load acknowledging time of described deviation longer than standard.
6. the heat power supply device according to any one of Claims 1 to 5, is characterized in that,
Described control part is set as: described target temperature is divided into final goal temperature and provisional target temperature, described supplying temperature first arrives described provisional target temperature than described final goal temperature, described final goal temperature is the temperature of the described thermal medium of described heat utilization equipment requirement, and described provisional target temperature is between described supplying temperature and described final goal temperature.
7. heat power supply device according to claim 6, is characterized in that,
Described control part sets described provisional target temperature and described final goal temperature as follows, that is: making described supplying temperature from exceeding described provisional target temperature until the variable quantity arriving the described supplying temperature in the unit interval till described final goal temperature, being less than the variable quantity of the described supplying temperature in unit interval that described supplying temperature arrives till described provisional target temperature.
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| JP2014066528A JP6271316B2 (en) | 2014-03-27 | 2014-03-27 | Heat source equipment |
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| CN110094847A (en) * | 2019-05-24 | 2019-08-06 | 珠海格力电器股份有限公司 | Method and device for efficiently controlling modular unit |
| CN111692721A (en) * | 2019-03-15 | 2020-09-22 | 开利公司 | Control method for air conditioning system |
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| JP7017406B2 (en) | 2017-12-27 | 2022-02-08 | 三菱重工サーマルシステムズ株式会社 | Control device, refrigerator system, control method and program |
| JP6912402B2 (en) * | 2018-02-08 | 2021-08-04 | 東京瓦斯株式会社 | Air conditioning system |
| JP7258230B2 (en) * | 2020-04-07 | 2023-04-14 | 三菱電機株式会社 | refrigeration cycle equipment |
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| JP6271316B2 (en) | 2018-01-31 |
| JP2015190654A (en) | 2015-11-02 |
| CN104949262B (en) | 2019-07-09 |
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