CN102338441B - Method for regulating and controlling freezing ability of fixed-frequency freezing air-conditioning ice-water system - Google Patents
Method for regulating and controlling freezing ability of fixed-frequency freezing air-conditioning ice-water system Download PDFInfo
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- CN102338441B CN102338441B CN 201010239071 CN201010239071A CN102338441B CN 102338441 B CN102338441 B CN 102338441B CN 201010239071 CN201010239071 CN 201010239071 CN 201010239071 A CN201010239071 A CN 201010239071A CN 102338441 B CN102338441 B CN 102338441B
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Abstract
The invention relates to a method for regulating and controlling the freezing ability of a fixed-frequency freezing air-conditioning ice-water system. The method comprises the following steps of: controlling the quantity of compressors which participate in operation in a fixed-frequency ice-water main machine by using temperature buffering differences of individual requirement ends to make the utilization rate of each compressor during operation approximate to 100 percent; respectively defining a plurality of operating programs for different freezing ability requirement ends to make the operating programs respectively have corresponding high-temperature-low-temperature intervals which are individually defined; and re-distributing supply periods in which the fixed-frequency ice-water main machine supplies the freezing ability to the freezing ability requirement ends or starting periods of the fixed-frequency ice-water main machine by using temperature buffering strips of different operating programs to make the compressors operate in the fixed-frequency ice-water main machine in a concentrated starting mode, so an effect of saving energy and electricity is achieved.
Description
Technical field
The present invention relates to a kind of refrigerating capacity regulate and control method, refer in particular to a kind of fixed refrigerating capacity (the freezing ability of a fixed-frequency freezing AC ice-water system) regulate and control method of refrigerating and air conditioning ice water system frequently.
Background technology
Generally speaking, has the place of business of temperature control demand or the demand end equipment (for example: air conditioner, central air conditioner system, reach in freezer, refrigerator etc.) that the office unit all has, need sizable power output and cool house effect mostly, general separated host may cause efficient deficiency or the too high problem of cost.Therefore the employed a plurality of demand end equipment in most place of business all adopt the design of the ice water host computer that is connected to the rear end simultaneously, reach the temperature control demand with the heat exchange action of utilizing ice water host computer and demand end equipment room.For example, the freezing and refrigeration cabinet that amount is peddled, fresh supermarket or freezing and refrigeration warehouse dispose all is connected with the ice water host computer of rear end simultaneously, finishes heat exchange with the cooling fluid that utilizes ice water host computer to provide, and then reaches purpose freezing, refrigeration.
In fact, the quantity delivered of ice water host computer is quite huge usually, and the quantity delivered of supplying with is more big, and the electric weight that consumes is also just more high.An ice water host computer of peddling with amount is example and since its quantity delivered of supplying with mostly between several tons between hundreds of tons so that ice water host computer power consumption is also quite high, certainly, it is also considerable that amount is peddled the electricity charge that a dealer pays because of ice water host computer.If can effectively utilize the cold-room ability that ice water host computer is supplied with, certainly will be able to reduce significantly the cost paid at air-conditioning, on freezing of dealer.
In order to save the electric weight that ice water host computer consumes, then have manufacturer to develop to have a plurality of compressors decide the frequency ice water host computer, with along with the adjustment of quantity delivered total value participates in the number of compressors of running in the ice water host computer surely frequently, and then reduce power consumption, save the electricity charge.With regard to its reason, be because the quantity delivered of fixed ice water host computer frequently is directly proportional with the number of compressors that participates in running, each compressor is in case running is the full range running, in other words, compressor is not that to open (shown in the A point) fully be exactly to close (shown in the B point) fully, with typical case shown in Figure 1 surely frequently the schematic diagram that concerns of ice water host computer power consumption and quantity delivered be the example explanation, when one of them the compressor starts running in a plurality of fixed ice water host computers frequently, this compressor namely turns round with maximum cold-room ability own, its electric weight that consumes is 100% of own rated power, by increasing the number of compressors that participates in running in this fixed ice water host computer frequently, can distribute according to required power output, to reach the running effect of similar frequency conversion ice water host computer.Yet, because the trend of global warming is day by day obvious, and the configuration of deciding the frequency ice water host computer with a plurality of compressors moves for many years already, therefore, only utilize the effect that the frequency ice water host computer can reach energy savings along with the characteristic that the adjustment of quantity delivered total value participates in the number of compressors of running of deciding with a plurality of compressors, can't satisfy the huge carbon reduction demand of bringing along with social trend and environmental consciousness raising gradually.
In view of this; how a kind of flow allocating method that solves all deficiencies of above-mentioned prior art is provided; can make and decide the frequency ice water host computer and reach further energy saving effect; to provide effective and cost-effective power-saving mechanism at the freezing of various different field and air-conditioning related needs; as promoting industrial competitiveness and a big niche of cutting operating costs; and then the purpose that reaches carbon reduction, preserves our planet, real technical problem for needing to be resolved hurrily at present.
Summary of the invention
In view of the shortcoming of above-mentioned prior art, the objective of the invention is to effectively utilize the behavior in service of a plurality of compressors in the fixed ice water host computer frequently, promote the fixed energy saving effect of ice water host computer frequently.
Another object of the present invention is to, with centralized system running compressor and then promote cold-room efficient and reduce power consumption.
Based on above-mentioned or other purpose, the invention provides a kind of fixed refrigerating capacity regulate and control method of refrigerating and air conditioning ice water system frequently, be applied to have in the ice water system of a plurality of refrigerating capacity feed ends and a plurality of refrigerating capacity demand ends, each of these a plurality of refrigerating capacity demand ends all has other present temperature, individual other temperature leak speed (Temperature Lossing Rate), and operate on corresponding running program, wherein, this refrigerating capacity regulate and control method comprises: (1) defines described running program, makes each of described running program all have the corresponding high temperature-low-temperature range through indivedual definition; (2) by the required at present total refrigerating capacity of at least one supply of these a plurality of refrigerating capacity feed ends, so that other present temperature of each of these a plurality of refrigerating capacity demand ends all is being maintained in corresponding high temperature-low-temperature range in time cycle at present; (3) according to each individual other present temperature, individual other temperature leak speed of this a plurality of refrigerating capacity demand ends, each indivedual temperature of assessing these a plurality of refrigerating capacity demand ends rise to required indivedual temperature rise time of upper limb of corresponding high temperature-low-temperature range; (4) judge whether the indivedual time differences of temperature between the rise time of these a plurality of refrigerating capacity demand ends are poor greater than a special time, if, then by these a plurality of refrigerating capacity feed ends at least one to this corresponding to described indivedual temperature in the rise time the shortest person's refrigerating capacity demand end carry out the precooling program, make this corresponding to described indivedual temperature in the rise time the temperature of short person's refrigerating capacity demand end reduce, then get back to step (3); If not, it is poor less than this special time that the indivedual temperature that namely represent these a plurality of refrigerating capacity demand ends rise to time difference of upper limb of corresponding high temperature-low-temperature range, then proceeds to step (5); And (5) are when indivedual temperature of these a plurality of refrigerating capacity demand ends rise to the upper limb of corresponding high temperature-low-temperature range simultaneously, by the required predetermined total refrigerating capacity of at least one supply of these a plurality of refrigerating capacity feed ends, to reduce indivedual temperature of these a plurality of refrigerating capacity demand ends, make all to be maintained in corresponding high temperature-low-temperature range in indivedual temperature predetermined time cycle of these a plurality of refrigerating capacity demand ends.
In another aspect of this invention, predetermined total refrigerating capacity that these a plurality of refrigerating capacity feed ends are supplied comprises that also pipeline runs off, and for example pipeline is damaged or inhomogeneous.
In still another aspect of the invention, also comprise less important high temperature-low-temperature range in the corresponding high temperature-low-temperature range scope of indivedual definition that described running program has, the described running program of foundation is set the Temperature numerical of this corresponding high temperature-low-temperature range and this less important high temperature-low-temperature range, as the temperature buffer band of specific running program.
In another aspect of the present invention, can be by these a plurality of refrigerating capacity demand ends of repeating query algorithm allotment, carry out different running programs in turn to make these a plurality of refrigerating capacity demand ends, also can make these a plurality of refrigerating capacity demand ends carry out different running programs in turn with the character according to these a plurality of refrigerating capacity demand ends by cooperating these a plurality of refrigerating capacity demand ends of Weighting type algorithm allotment.
Than prior art, the fixed refrigerating capacity regulate and control method of refrigerating and air conditioning ice water system frequently of the present invention, temperature buffer by the individual demand end is poor, control the number of compressors of deciding to participate in the frequency ice water host computer running, the utilization rate of each compressor is suitable for being applied in the air-conditioning or refrigeration system that adopts fixed ice water host computer frequently near 100% when making its running, improves the fixed running efficiency of ice water host computer frequently, reduce power consumption, and then effectively promote cold-room efficient and cost benefit.
Description of drawings
Fig. 1 is the graph of relation of typical fixed ice water host computer power consumption frequently and load factor;
Fig. 2 A and 2B are the fixed application architecture figure of the refrigerating capacity regulate and control method of refrigerating and air conditioning ice water system frequently of the present invention;
Fig. 3 shows that refrigerating capacity demand end is according to the corresponding operating temperature band of different running programs;
Fig. 4 A and 4B are the schematic diagrames that provides the cold-room demand volume that gives a plurality of refrigerating capacity demand ends to regulate and control for the refrigerating capacity feed end according to the refrigerating capacity regulate and control method of fixed refrigerating and air conditioning ice water system frequently of the present invention;
Fig. 5 shows the fixed flow chart of the refrigerating capacity regulate and control method of refrigerating and air conditioning ice water system frequently of the present invention.
The primary clustering symbol description
20 refrigerating capacity feed ends (ice water host computer)
21 refrigerating capacity demand ends
The 21a heat exchange
22 refrigerating capacity demand ends
The 22a heat exchange
23 refrigerating capacity demand ends
The 23a heat exchange
25 frozen water pipelines
26 monitoring clients
The A compressor start
The B compressor cuts out
The S501-S506 step
The T1-T4 temperature
The specific embodiment
Below be by specific instantiation technology contents of the present invention to be described, those skilled in the art can understand other advantage of the present invention and effect easily by the content that this specification discloses.The present invention also can be implemented or be used by other different instantiation, and the every details in this specification also can be based on different viewpoints and application, carries out various modifications and change under the spirit of the present invention not deviating from.
See also Fig. 2 A, it shows that the fixed refrigerating capacity regulate and control method of refrigerating and air conditioning ice water system frequently according to the present invention is applied to have the framework in the ice water system of deciding frequency formula refrigerating capacity feed end (ice water host computer) 20 and refrigerating capacity demand end 21,22,23.In the present embodiment, should be in opening by fixed refrigerating capacity feed end 20 frequently, a plurality of refrigerating capacity demand ends 21,22,23 carry out heat exchange 21a, 22a, 23a by frozen water pipeline 25 with this fixed refrigerating capacity feed end (ice water host computer) 20 frequently simultaneously, to reach cool effect.Shown in Fig. 2 B, should be in closed condition by fixed refrigerating capacity feed end 20 frequently, a plurality of refrigerating capacity demand ends 21,22,23 all can't carry out heat exchange 21a, 22a, 23a with this fixed refrigerating capacity feed end (ice water host computer) 20 frequently by frozen water pipeline 35, can't reach cool effect.
Must propose explanation at this, the refrigerating capacity that provides of this refrigerating capacity feed end (ice water host computer) 20 is defined as follows in this manual:
Frozen water flow * frozen water specific heat * (the frozen water turnover temperature difference)
Wherein, frozen water specific heat is the specific heat of the frozen water that provides of this refrigerating capacity feed end (ice water host computer) 20, and the temperature difference between the frozen water of the frozen water that the frozen water turnover temperature difference provides for this frozen water pipeline 25 and backflow.Hence one can see that, when frozen water passes in and out the temperature difference greater than the specific temperature difference, represent described refrigerating capacity demand end 21,22,23 and need more refrigerating capacities, and this refrigerating capacity feed end (ice water host computer) 20 can increase the refrigerating capacity of supplying by increasing the frozen water flow, and then reduce the frozen water turnover temperature difference, reach the effect of the described refrigerating capacity demand end of cooling.
In the present embodiment, this fixed refrigerating capacity feed end 20 frequently or 30 in case the load factor that starts namely with 100% turn round.Described refrigerating capacity demand end 21,22,23 can comprise the equipment that various needs such as air conditioner, central air conditioner main machine, fresh reach in freezer, vegetables and fruits refrigerator carry out heat exchange.Hence one can see that, and the refrigerating capacity demand of a plurality of refrigerating capacity demand ends is concentrated in together, and can reduce the duty cycle of deciding the frequency ice water host computer significantly, and then promote and economize electrical efficiency.
In addition, in the present embodiment, refrigerating capacity feed end 20 can be for single or multiple.
In the present embodiment, each refrigerating capacity demand end 21,22,23 all has other present temperature and individual other temperature leak speed, and operates on corresponding running program.Yet indivedual temperature leak speed of each refrigerating capacity demand end 21,22,23 depend on quite multiple factor, and for example: refrigerating capacity demand end characteristic, background environment temperature, pipeline are damaged old etc.
Will be appreciated that the temperature leak speed of indivedual refrigerating capacity demand ends can measure via monitoring client 26 at any time, is beneficial to each refrigerating capacity demand end is carried out real-time traffic demand correction.In addition, except monitoring or measure the state of each refrigerating capacity demand end, also can carry out running program to each refrigerating capacity demand end via this monitoring client 26 and set, but not as limit.In other embodiments, different refrigerating capacity demand ends can arrange corresponding monitoring client respectively; Or in a plurality of refrigerating capacity demand ends, part refrigerating capacity demand end is to be respectively arranged with corresponding monitoring client, and part refrigerating capacity demand end then is to share identical monitoring client.
In the present embodiment, at first must define its corresponding running program respectively to each refrigerating capacity demand end 21,22,23, make each of described running program all have the corresponding high temperature-low-temperature range through indivedual definition.For example, described refrigerating capacity demand end 21,22,23 can have different operating temperature scopes respectively, that is refrigerating capacity demand end 21 can for example be air conditioner, and its suitable operating temperature is between 23～28 degrees centigrade; And refrigerating capacity demand end 22 can for example be the vegetables and fruits refrigerator, and its suitable operating temperature is between 2～7 degrees centigrade; 23 at refrigerating capacity demand end can for example be the server room, and its suitable operating temperature is between 20～25 degrees centigrade.
Next, by this refrigerating capacity feed end 20 supplies required refrigerating capacity of each refrigerating capacity demand end 21,22,23 at present, make indivedual temperature T of described refrigerating capacity demand end 21,22,23
21, T
22, T
23Can be maintained in corresponding high temperature-low-temperature range own.
Simultaneously, according to indivedual temperature of described refrigerating capacity demand end 21,22,23, individual other temperature leak speed, further assess required indivedual temperature rise time of upper limb that the indivedual temperature that obtain described refrigerating capacity demand end 21,22,23 rise to corresponding high temperature-low-temperature range.
If the indivedual time differences of temperature between the rise time of described refrigerating capacity demand end 21,22,23 are during greater than a special time difference, then by at least one refrigerating capacity feed end 20 at this corresponding to described indivedual temperature in the rise time the shortest person's refrigerating capacity demand end carry out the precooling program, and then reduce corresponding to described indivedual temperature temperature of short person's refrigerating capacity demand end in the rise time.
Next, again according to described refrigerating capacity demand end 21,22, indivedual temperature of 23, individual other temperature leak speed assessment obtains making described refrigerating capacity demand end 21,22, all be maintained at required total refrigerating capacity in corresponding high temperature-low-temperature range in 23 predetermined time cycle, up to described refrigerating capacity demand end 21,22, the indivedual time differences of temperature between the rise time of 23 less than this special time difference till, make described refrigerating capacity demand end 21 thus, 22, it is poor less than this special time that indivedual temperature of 23 rise to time difference of upper limb of corresponding high temperature-low-temperature range.
If the indivedual temperature of described refrigerating capacity demand end 21,22,23 simultaneously, approach simultaneously or under very little situation of time difference, rise to the upper limb of corresponding high temperature-low-temperature range, then by the required predetermined total refrigerating capacity of at least one supply of described refrigerating capacity feed end 20, to reduce indivedual temperature of described refrigerating capacity demand end 21,22,23, make all to be maintained in corresponding high temperature-low-temperature range in indivedual temperature predetermined time cycle of described refrigerating capacity demand end 21,22,23.
For example, according to described refrigerating capacity demand end 21,22, indivedual temperature of 23, individual other temperature leak speed assessment obtains described refrigerating capacity demand end 21,22, indivedual temperature of 23 rise to required indivedual temperature rise time of upper limb of corresponding high temperature-low-temperature range, if described refrigerating capacity demand end 21,22, the indivedual time differences of temperature between the rise time of 23 are during greater than a special time difference, then the fixed refrigerating capacity regulate and control method of refrigerating and air conditioning ice water system frequently of the present invention will utilize each refrigerating capacity demand end 21,22,23 running programs that set the high temperature-low-temperature range that can tolerate as the temperature buffer band, make this corresponding to described indivedual temperature in the rise time the temperature of short person's refrigerating capacity demand end reduce, and reappraise up to described refrigerating capacity demand end 21,22, the indivedual time differences of temperature between the rise time of 23 less than this special time difference till.Thus, decide to make that deciding the frequency ice water host computer turns round with centralized system on the frequency ice water host computer various by the refrigerating capacity regulate and control method of fixed refrigerating and air conditioning ice water system frequently of the present invention, and then promote the effect of power and energy saving.
See also Fig. 3, it is in order to show that refrigerating capacity demand end is according to the corresponding operating temperature band of different running programs.As shown in the figure, T1 is the lower edge (temperature minimum point) of high temperature-low-temperature range, and T2 is the lower edge of less important high temperature-low-temperature range, and T3 is the upper limb of less important high temperature-low-temperature range, and T4 is the upper limb (temperature peak) of high temperature-low-temperature range.At the demand of different refrigerating capacity demand ends, can adopt different operating temperature bands to set.
For example, refrigerating capacity demand end 21,22,23 all can be set for respectively with different running programs and operate as described in shown in Fig. 2 A and 2B, generally speaking, running program can comprise general running program, precooling program, and deviation allow program but be not limited with described.
General running program allows that holding temperature is in high temperature-low-temperature range scope, for example: the temperature of vegetables and fruits refrigerator is allowed and is maintained at 2～7 degrees centigrade.This precooling program is then allowed for corresponding refrigerating capacity demand end and is lowered the temperature in advance.In addition, deviation allows that program allows that then holding temperature is in corresponding high temperature-low-temperature range scope, and when surpassing corresponding less important high temperature-low-temperature range, temperature reaches a deviation after the allowed time, the corresponding refrigerating capacity demand end of then lowering the temperature or stop to lower the temperature, with holding temperature in this corresponding less important high temperature-low-temperature range scope, for example: the vegetables and fruits refrigerator allows that holding temperature is in 3～6 degrees centigrade (less important high temperature-low-temperature ranges), but in order to regulate and control refrigerating capacity or energy-conservation reason, can further allow holding temperature in 0～2 degree centigrade or 8～9 degrees centigrade, wherein high temperature-low-temperature range is 0～9 degree centigrade.
See also Fig. 4 A and 4B, it shows the cycle schematic diagram that the fixed refrigerating capacity regulate and control method of refrigerating and air conditioning ice water system frequently according to the present invention is regulated and control for the start-up period of the refrigerating capacity feed end 20 shown in Fig. 2 A and the 2B.
Under the situation shown in Fig. 4 B, it is quite frequent to decide the start-up period of frequency refrigerating capacity feed end 20 in indivedual unit interval t1, t2, t3, main cause is because the background environment temperature of each refrigerating capacity demand end 21,22,23 (for example: temperature Change), or external thermal source (for example: the vegetables and fruits refrigerator of refrigerating capacity demand end 23 just ice is gone into the higher raw vegetable of temperature) occurs may constantly continue to change.Shown in Fig. 4 B, during unit interval t1-t2, the compressor start of this refrigerating capacity feed end 20 reaches twice, and again during unit interval t2-t3, the compressor start time of this refrigerating capacity feed end 20 is more than the twice during other.Thus, should must often start to provide refrigerating capacity to give each refrigerating capacity demand end 21,22,23 by fixed refrigerating capacity feed end 20 frequently, yet start-up period will further increase this fixed power consumption of refrigerating capacity feed end 20 frequently so frequently.Therefore, contrast Fig. 4 A as can be known, the refrigerating capacity regulate and control method of fixed refrigerating and air conditioning ice water system frequently of the present invention can be with the number of starts centralized Control of this refrigerating capacity feed end 20 in indivedual unit interval t1, t2, t3, to reduce start-up period.Thereby under the situation shown in Fig. 4 A, the start-up period of the compressor of this refrigerating capacity feed end 20 in during constituent parts time t1-t2, t1-t3 all is starkly lower than the situation shown in Fig. 4 B.Hence one can see that, by the fixed refrigerating capacity regulate and control method of refrigerating and air conditioning ice water system frequently of the present invention, can make that deciding the frequency ice water host computer turns round with centralized system, reduce the startup frequency of this fixed refrigerating capacity feed end 20 frequently in the set time interval, promote energy-saving effect and efficiency of supply.
In the present embodiment, the refrigerating capacity regulate and control method of fixed refrigerating and air conditioning ice water system frequently of the present invention is by the temperature rise time of each refrigerating capacity demand end 21,22,23 of assessment, to judge what person will at first need provide refrigerating capacity by this refrigerating capacity feed end 20 in each refrigerating capacity demand end 21,22,23.Then, the refrigerating capacity regulate and control method of fixed refrigerating and air conditioning ice water system frequently of the present invention will make the temperature of this refrigerating capacity demand end descend a little preferentially at providing the refrigerating capacity demand end of refrigerating capacity to implement the precooling program by this refrigerating capacity feed end 20.By above-mentioned mechanism, can adjust described refrigerating capacity demand end 21,22,23 need be provided the time point of refrigerating capacity by this refrigerating capacity feed end 20, make this refrigerating capacity feed end 20 provide the frequency of refrigerating capacity to reduce, start-up period can be concentrated, that is this refrigerating capacity feed end 20 is after starting running, can supply the ice stream amount in a concentrated manner simultaneously and give each refrigerating capacity demand end 21,22,23, with the kind power that is produced with the startup back.Therefore, shown in Fig. 4 B, decide obviously frequent than shown in Fig. 4 A of frequency refrigerating capacity feed end start-up period, so the fixed refrigerating capacity regulate and control method of refrigerating and air conditioning ice water system frequently of the present invention can promote the energy-saving efficiency of deciding the frequency ice water host computer.
Should be understood by above-mentioned, the fixed refrigerating capacity regulate and control method of refrigerating and air conditioning ice water system frequently of the present invention indivedual refrigerating capacity demand ends of applying in a flexible way can operate on the characteristic of different running programs, reach effectively and concentrate the fixed effect of the start-up period of ice water host computer (refrigerating capacity feed end) 20 frequently.In addition, take into account because the refrigerating capacity regulate and control method of fixed refrigerating and air conditioning ice water system frequently of the present invention further runs off pipeline, compensate so can be extraly scatter and disappear at the flow that causes because of the old breakage of pipeline or other reason.
As shown in Figure 5, show the fixed flow chart of the refrigerating capacity regulate and control method of refrigerating and air conditioning ice water system frequently of the present invention, the fixed refrigerating capacity regulate and control method of refrigerating and air conditioning ice water system frequently of the present invention is applied to have in the ice water system of single or multiple refrigerating capacity feed end and single or multiple refrigerating capacity demand end, each refrigerating capacity demand end all has other present temperature, individual other temperature leak speed, and operates on corresponding running program.
In step S501, define a plurality of running programs, make each of described running program all have the corresponding high temperature-low-temperature range through indivedual definition, then proceed to step S502.
In step S502, by the present required total refrigerating capacity of this refrigerating capacity feed end supply, so that other present temperature of described refrigerating capacity demand end then proceeds to step S503 all being maintained in corresponding high temperature-low-temperature range in the time cycle at present.
In step S503, each other present temperature, individual other temperature leak speed according to these a plurality of refrigerating capacity demand ends, each indivedual temperature of assessing these a plurality of refrigerating capacity demand ends rise to required indivedual temperature rise time of upper limb of corresponding high temperature-low-temperature range, then proceed to step S504.
In step S504, judge whether the indivedual time differences of temperature between the rise time of these a plurality of refrigerating capacity demand ends are poor greater than a special time, if then proceed to step S505; If not, it is poor less than this special time that the indivedual temperature that namely represent these a plurality of refrigerating capacity demand ends rise to time difference of upper limb of corresponding high temperature-low-temperature range, then proceeds to step S506.
In step S505, by at least one refrigerating capacity feed end to this corresponding to described indivedual temperature in the rise time the shortest person's refrigerating capacity demand end carry out the precooling program, thereby reduce this corresponding to described indivedual temperature temperature of short person's refrigerating capacity demand end in the rise time.Then get back to step S503.
In step S506, when indivedual temperature of these a plurality of refrigerating capacity demand ends rise to the upper limb of corresponding high temperature-low-temperature range simultaneously, by the required predetermined total refrigerating capacity of at least one refrigerating capacity feed end supply, to reduce indivedual temperature of these a plurality of refrigerating capacity demand ends, make all to be maintained in corresponding high temperature-low-temperature range in indivedual temperature predetermined time cycle of these a plurality of refrigerating capacity demand ends.
Than prior art, the fixed refrigerating capacity regulate and control method of refrigerating and air conditioning ice water system frequently of the present invention can effectively utilize decides the frequency ice water host computer in case startup is the behavior in service of full-speed operation, with centralized system running compressor, make compressor operation under lower start-up period and startup frequency, to promote cold-room efficient and to reduce power consumption, temperature buffer by the individual demand end is poor, control the number of compressors of deciding to participate in the frequency ice water host computer running, the utilization rate of each compressor is near 100% when making its running, be suitable for being applied in the air-conditioning or refrigeration system that adopts fixed ice water host computer frequently, improve the fixed running efficiency of ice water host computer frequently, reduce power consumption, and then effectively promote cold-room efficient and cost benefit.
Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not is used for restriction the present invention.Any those skilled in the art all can be under spirit of the present invention and category, and above-described embodiment is modified and changed.Therefore, the scope of the present invention should be listed as claim.
Claims (10)
1. decide the refrigerating capacity regulate and control method of refrigerating and air conditioning ice water system frequently for one kind, be applied to have in the ice water system of refrigerating capacity feed end and a plurality of refrigerating capacity demand ends, each of these a plurality of refrigerating capacity demand ends all has other present temperature, individual other temperature leak speed, and according to corresponding running program running, it is characterized in that this method comprises:
1) the corresponding running program of these a plurality of refrigerating capacity demand ends of definition, feasible respectively this running program all has the corresponding high temperature-low-temperature range of definition;
2) by the present required total refrigerating capacity of this refrigerating capacity feed end supply, so that respectively the present temperature of this refrigerating capacity demand end all is being maintained in corresponding high temperature-low-temperature range in the time cycle at present;
3) according to respectively present temperature, individual other temperature leak speed of this refrigerating capacity demand end, each indivedual temperature of assessing these a plurality of refrigerating capacity demand ends rise to required indivedual temperature rise time of upper limb of corresponding high temperature-low-temperature range;
4) judge respectively whether the indivedual time differences of temperature between the rise time of this refrigerating capacity demand end are poor greater than a special time, if, then by this refrigerating capacity feed end at this corresponding to described indivedual temperature in the rise time this refrigerating capacity demand end of the shortest person carry out the precooling program, thereby reduce this corresponding to described indivedual temperature temperature of this refrigerating capacity demand end of short person in the rise time, then get back to step 3); If not, then proceed to step 5); And
5) when indivedual temperature of these a plurality of refrigerating capacity demand ends rise to the upper limb of corresponding high temperature-low-temperature range simultaneously, by the required predetermined total refrigerating capacity of this refrigerating capacity feed end supply, thereby reduce indivedual temperature of these a plurality of refrigerating capacity demand ends, all to be maintained in corresponding high temperature-low-temperature range in the indivedual temperature predetermined time cycle that make these a plurality of refrigerating capacity demand ends.
2. the fixed refrigerating capacity regulate and control method of refrigerating and air conditioning ice water system frequently according to claim 1 is characterized in that, this present required total refrigerating capacity comprises that also pipeline runs off.
3. the fixed refrigerating capacity regulate and control method of refrigerating and air conditioning ice water system frequently according to claim 1 is characterized in that, this predetermined total refrigerating capacity comprises that also pipeline runs off.
4. the fixed refrigerating capacity regulate and control method of refrigerating and air conditioning ice water system frequently according to claim 1, it is characterized in that, also comprise less important high temperature-low-temperature range in defined corresponding high temperature-low-temperature range scope that this running program has, in order to set the Temperature numerical of this corresponding high temperature-low-temperature range and this less important high temperature-low-temperature range according to this running program.
5. the fixed refrigerating capacity regulate and control method of refrigerating and air conditioning ice water system frequently according to claim 1, it is characterized in that, this running program also comprises general running program, deviation is allowed program, wherein, this general running program allows that holding temperature is in high temperature-low-temperature range scope, this deviation allows that program allows that holding temperature is in corresponding high temperature-low-temperature range scope, when surpassing corresponding less important high temperature-low-temperature range, temperature reaches a deviation after the allowed time, then with the cooling of corresponding refrigerating capacity demand end or stop cooling, with holding temperature in this corresponding less important high temperature-low-temperature range scope.
6. the fixed refrigerating capacity regulate and control method of refrigerating and air conditioning ice water system frequently according to claim 1, it is characterized in that, step 1) also comprises by these a plurality of refrigerating capacity demand ends of repeating query algorithm allotment, carries out different running programs in turn to make these a plurality of refrigerating capacity demand ends.
7. the fixed refrigerating capacity regulate and control method of refrigerating and air conditioning ice water system frequently according to claim 1 is characterized in that, step 1) comprises that also the character according to these a plurality of refrigerating capacity demand ends makes these a plurality of refrigerating capacity demand ends carry out different running programs.
8. the fixed refrigerating capacity regulate and control method of refrigerating and air conditioning ice water system frequently according to claim 1, it is characterized in that, step 1) also comprises by these a plurality of refrigerating capacity demand ends of Weighting type algorithm allotment, makes these a plurality of refrigerating capacity demand ends carry out different running programs in turn with the character according to these a plurality of refrigerating capacity demand ends.
9. the fixed refrigerating capacity regulate and control method of refrigerating and air conditioning ice water system frequently according to claim 1 is characterized in that, described refrigerating capacity feed end is fixed ice water host computer frequently.
10. the fixed refrigerating capacity regulate and control method of refrigerating and air conditioning ice water system frequently according to claim 1 is characterized in that described refrigerating capacity demand end is reach in freezer, refrigerator, pressure fan and/or air conditioner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010239071 CN102338441B (en) | 2010-07-27 | 2010-07-27 | Method for regulating and controlling freezing ability of fixed-frequency freezing air-conditioning ice-water system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010239071 CN102338441B (en) | 2010-07-27 | 2010-07-27 | Method for regulating and controlling freezing ability of fixed-frequency freezing air-conditioning ice-water system |
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| JP6537358B2 (en) * | 2015-05-29 | 2019-07-03 | キヤノン株式会社 | IMAGE FORMING APPARATUS, CONTROL METHOD THEREOF, AND PROGRAM |
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|---|---|---|---|---|
| WO1998035189A1 (en) * | 1997-02-07 | 1998-08-13 | Matsushita Electric Industrial Co., Ltd. | Multiple room type air conditioning apparatus |
| CN200968689Y (en) * | 2006-11-13 | 2007-10-31 | 长沙怡能电子科技有限公司 | Energy-saving control system of central air-conditioning |
| CN101140096A (en) * | 2007-10-18 | 2008-03-12 | 苏州艾隆科技有限公司 | electricity economizer centralized management method and system of central air-conditioning |
| CN101191651A (en) * | 2006-11-29 | 2008-06-04 | 海尔集团公司 | Sine DC frequency conversion multi-split air conditioner control system and its control method |
| JP2008175409A (en) * | 2007-01-16 | 2008-07-31 | Mitsubishi Electric Corp | Operation control method of air conditioning system, and air conditioning system |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998035189A1 (en) * | 1997-02-07 | 1998-08-13 | Matsushita Electric Industrial Co., Ltd. | Multiple room type air conditioning apparatus |
| CN200968689Y (en) * | 2006-11-13 | 2007-10-31 | 长沙怡能电子科技有限公司 | Energy-saving control system of central air-conditioning |
| CN101191651A (en) * | 2006-11-29 | 2008-06-04 | 海尔集团公司 | Sine DC frequency conversion multi-split air conditioner control system and its control method |
| JP2008175409A (en) * | 2007-01-16 | 2008-07-31 | Mitsubishi Electric Corp | Operation control method of air conditioning system, and air conditioning system |
| CN101140096A (en) * | 2007-10-18 | 2008-03-12 | 苏州艾隆科技有限公司 | electricity economizer centralized management method and system of central air-conditioning |
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