CN103335407A - Air-cooled heat pump cold/hot water machine system and capacity output control method therefor - Google Patents
Air-cooled heat pump cold/hot water machine system and capacity output control method therefor Download PDFInfo
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Abstract
The invention discloses an air-cooled heat pump cold/hot water machine system and a capacity output control method therefor. The method comprises the following steps: acquiring circulating water flow data of an air-cooled heat pump cold/hot water machine system before and after the preset interval time; calculating the capacity output change value of the air-cooled heat pump cold/hot water machine system before and after the preset interval time according to the circulating water flow data; controlling the capacity output value of the air-cooled heat pump cold/hot water machine system according to the calculated capacity output change value. According to the invention, when the system circulating water flow changes, the circulating water flow data of the air-cooled heat pump cold/hot water machine system before and after the preset interval time is acquired, the capacity output change value of the system before and after the preset interval time is calculated according to the system circulating water flow data, and the system capacity output value is controlled according to the capacity output change value to immediately and accurately adjust the unit capacity output, so that long-term low-water-flow and high-load operation is avoided, unit protection is prevented, the unit operation reliability is increased and a comprehensive energy-saving effect is achieved.
Description
Technical field
The present invention relates to air-conditioning technical field, relate in particular to a kind of air-cooled heat pump cold water-heating machine system and ability output control method thereof.
Background technology
At present, air-cooled heat pump cold hot water machine ability output regulate and controlled by water temperature, when causing the unit circulating water flow to reduce suddenly owing to other reason, and unit still moves in full load, because unit has little time to unload sub-load, can cause the unit leaving water temperature low excessively during refrigeration, at this moment evaporating temperature is low excessively, causes the freezing phenomenon of evaporimeter easily; During heating operation, generator protection appears easily.If unit is in for a long time under this state and moves, unit meeting frequent start-stop causes the unit reliability variation, and reduces the comprehensive efficiency of operation of unit.
Summary of the invention
Main purpose of the present invention be to provide a kind of air-cooled heat pump cold water-heating machine system and ability output control method thereof, when systemic circulation discharge changes, realization increases unit operation reliability and synthesis energy saving effect to the adjusting promptly and accurately of unit capacity output.
In order to achieve the above object, the present invention propose a kind of air-cooled heat pump cold water-heating machine system ability output control method, may further comprise the steps:
Obtain air-cooled heat pump before and after the predetermined interval cold the circulating water flow data of water-heating machine system;
According to described circulating water flow data computation go out described air-cooled heat pump cold the ability output changing value of water-heating machine system before and after described predetermined interval;
According to the described ability output changing value that calculates, the control air-cooled heat pump cold the ability output valve of water-heating machine system.
Preferably, described obtain air-cooled heat pump before and after the predetermined interval cold the step of circulating water flow data of water-heating machine system comprise:
By flowmeter obtain air-cooled heat pump before and after the predetermined interval cold the circulating water flow data of water-heating machine system.
Preferably, described air-cooled heat pump cold water-heating machine system adopt fixed water pump frequently, described obtain air-cooled heat pump before and after the predetermined interval cold the step of circulating water flow data of water-heating machine system comprise:
Obtain respectively air-cooled heat pump before and after the predetermined interval cold the power output of deciding the frequency water pump of water-heating machine system;
According to predetermined electric power-flow curve calculate obtain before and after the predetermined interval air-cooled heat pump cold the water-heating machine system circulating water flow data of the power output correspondence of water pump frequently surely.
Preferably, described air-cooled heat pump cold water-heating machine system adopt variable frequency pump, described obtain air-cooled heat pump before and after the predetermined interval cold the step of circulating water flow data of water-heating machine system comprise:
Obtain respectively air-cooled heat pump before and after the predetermined interval cold the output frequency of variable frequency pump of water-heating machine system;
According to predetermined frequency-flow curve calculate obtain air-cooled heat pump before and after the predetermined interval cold the circulating water flow data of output frequency correspondence of water-heating machine system variable frequency pump.
Preferably, described according to the circulating water flow data computation go out described air-cooled heat pump cold the step of the ability output changing value of water-heating machine system before and after described predetermined interval comprise:
Calculate respectively the air-cooled heat pump of circulating water flow data correspondence before and after the predetermined interval cold the ability output valve of water-heating machine system, described ability output valve is refrigerating capacity or the heating capacity of system's output;
Calculate described air-cooled heat pump before and after the predetermined interval cold the difference of ability output valve of water-heating machine system, obtain described air-cooled heat pump cold the ability output changing value of water-heating machine system before and after described predetermined interval.
The present invention also propose a kind of air-cooled heat pump cold water-heating machine system, comprising: the ability output control module, described ability output control module comprises:
The discharge acquiring unit, be used for obtaining air-cooled heat pump before and after the predetermined interval cold the circulating water flow data of water-heating machine system;
Computing unit, be used for according to described circulating water flow data computation go out described air-cooled heat pump cold the ability output changing value of water-heating machine system before and after described predetermined interval;
Output regulation and control unit is used for according to the described ability output changing value that calculates, the control air-cooled heat pump cold the ability output valve of water-heating machine system.
Preferably, described discharge acquiring unit, also be used for by flowmeter obtain air-cooled heat pump before and after the predetermined interval cold the circulating water flow data of water-heating machine system.
Preferably, described discharge acquiring unit, also be used for obtaining respectively air-cooled heat pump before and after the predetermined interval cold the power output of deciding the frequency water pump of water-heating machine system; According to predetermined electric power-flow curve calculate obtain before and after the predetermined interval air-cooled heat pump cold the water-heating machine system circulating water flow data of the power output correspondence of water pump frequently surely.
Preferably, described discharge acquiring unit, also be used for obtaining respectively air-cooled heat pump before and after the predetermined interval cold the output frequency of variable frequency pump of water-heating machine system;
According to predetermined frequency-flow curve calculate obtain air-cooled heat pump before and after the predetermined interval cold the circulating water flow data of output frequency correspondence of water-heating machine system variable frequency pump.
Preferably, described computing unit, also be used for calculating respectively the air-cooled heat pump of circulating water flow data correspondence before and after the predetermined interval cold the ability output valve of water-heating machine system, described ability output valve is refrigerating capacity or the heating capacity of system's output; Calculate described air-cooled heat pump before and after the predetermined interval cold the difference of ability output valve of water-heating machine system, obtain described air-cooled heat pump cold the ability output changing value of water-heating machine system before and after described predetermined interval.
A kind of air-cooled heat pump that the present invention proposes cold water-heating machine system and ability output control method thereof; when systemic circulation discharge changes; by obtain air-cooled heat pump before and after the predetermined interval cold the circulating water flow data of water-heating machine system; according to the ability output changing value of systemic circulation discharge data computation system before and after predetermined interval; control thus air-cooled heat pump cold the ability output valve of water-heating machine system; adjusting is promptly and accurately carried out in output to unit capacity; avoid occurring long-term low discharge heavy-duty service; avoid occurring high voltage protective; increase the unit operation reliability, reach the effect of synthesis energy saving.
Description of drawings
Fig. 1 be air-cooled heat pump of the present invention cold the schematic flow sheet of water-heating machine system ability output control method preferred embodiment;
Fig. 2 be air-cooled heat pump of the present invention cold the structural representation of water-heating machine system preferred embodiment.
In order to make technical scheme of the present invention clearer, clear, be described in further detail below in conjunction with accompanying drawing.
The specific embodiment
Should be appreciated that specific embodiment described herein only in order to explaining the present invention, and be not used in restriction the present invention.
As shown in Figure 1, preferred embodiment of the present invention propose a kind of air-cooled heat pump cold water-heating machine system ability output control method, comprising:
Step S101, obtain air-cooled heat pump before and after the predetermined interval cold the circulating water flow data of water-heating machine system;
The present embodiment method be applicable to air-cooled heat pump cold water-heating machine system heating operation and two kinds of different mode of operations of refrigerating operaton, can be when the terminal operating position difference of user causes systemic circulation discharge to change, realization increases unit operation reliability and synthesis energy saving effect to the adjusting promptly and accurately of system's unit capacity output.
Wherein, the adjusting control of system's unit capacity output is controlled by discharge.
At first, gather air-cooled heat pump cold the circulating water flow data of water-heating machine system different time points.Present embodiment is set with a time interval of gathering the circulating water flow data, before and after this predetermined blanking time, gather respectively air-cooled heat pump cold the circulating water flow data of water-heating machine system.
When concrete the collection, as a kind of embodiment, can by flowmeter obtain air-cooled heat pump before and after the predetermined interval cold the circulating water flow data of water-heating machine system.
As another kind of embodiment, can also export by the ability of gathering water pump, and then be converted into corresponding discharge output numerical value.Wherein:
Adopt the fixed situation of water pump frequently for the cold debt water-heating machine system of air-cooled heat pump, each power output of fixed water pump frequently is to there being a discharge.
Therefore, can obtain respectively air-cooled heat pump before and after the predetermined interval cold the power output of deciding the frequency water pump of water-heating machine system, then according to predetermined electric power-flow curve calculate obtain before and after the predetermined interval air-cooled heat pump cold the water-heating machine system circulating water flow data of the power output correspondence of water pump frequently surely.
In addition, for air-cooled heat pump cold water-heating machine system adopt the situation of variable frequency pump, during the variable frequency pump change of frequency, the circulating water flow of corresponding output also and then changes, be the discharge that each frequency has a correspondence, therefore, can obtain respectively air-cooled heat pump before and after the predetermined interval cold the output frequency of variable frequency pump of water-heating machine system; Then according to predetermined frequency-flow curve calculate obtain air-cooled heat pump before and after the predetermined interval cold the circulating water flow data of output frequency correspondence of water-heating machine system variable frequency pump.
When practical operation, can feed back to systematic master control board by the change of frequency with variable frequency pump, follow-up can calculating according to different discharge draws required unlatching air-cooled heat pump Leng hot water board number, thereby reaches the purpose of controlling the output of air-cooled heat pump cooling-water machine ability by the change of frequency of variable frequency pump.
Step S102, according to described circulating water flow data computation go out described air-cooled heat pump cold the ability output changing value of water-heating machine system before and after described predetermined interval;
Get access to air-cooled heat pump before and after predetermined blanking time cold after the circulating water flow data of water-heating machine system, calculate respectively the air-cooled heat pump of circulating water flow data correspondence before and after the predetermined interval cold the ability output valve of water-heating machine system, this ability output valve is refrigerating capacity or the heating capacity of system's output.
Then, calculate described air-cooled heat pump before and after the predetermined interval cold the difference of ability output valve of water-heating machine system, obtain described air-cooled heat pump cold the ability output changing value of water-heating machine system before and after described predetermined interval.
Such as, the fan-out capability difference of unit is Δ Q before and after the predetermined interval Δ t, then can arrange+Δ Q is the unit fan-out capability value of the required unloading of unit, on the contrary ,-Δ Q is the unit capacity output valve of the required loading of unit.
Step S103, according to the described ability output changing value that calculates, the control air-cooled heat pump cold the ability output valve of water-heating machine system.
According to the ability numerical value of the above-mentioned required loading that calculates and unloading, thus the control air-cooled heat pump cold increase and the minimizing of unlatching platform number of hot water machine.Such as, for the fan-out capability difference of unit before and after the predetermined interval Δ t be-situation of Δ Q, show that then actual fan-out capability is less than normal, need the air-cooled heat pump of corresponding number of loading cold hot water machine; Fan-out capability difference for unit before and after the predetermined interval Δ t is+situation of Δ Q, show that then actual fan-out capability is bigger than normal, need the air-cooled heat pump of corresponding number of unloading cold hot water machine, thereby in time control the output of unit capacity, avoid occurring long-term low discharge heavy-duty service, increase the unit operation reliability, reach the effect of synthesis energy saving.
Need to prove, also can adopt above-mentioned control method to come regulating system ability output for the big cold of separate unit machine (perhaps big heat heats more) the system's unit that freezes more, change calculations according to the circulating water flow of system gets output capacity output changing value, the frequency of opening the refrigeration system of varying number in the unit or controlling variable frequency pump in the single refrigeration system is come regulating power output, thereby in time control the output of unit capacity, avoid occurring long-term low discharge heavy-duty service, increase the unit operation reliability, reach the effect of synthesis energy saving.
Present embodiment passes through such scheme; when systemic circulation discharge changes; by obtain air-cooled heat pump before and after the predetermined interval cold the circulating water flow data of water-heating machine system; according to the ability output changing value of systemic circulation discharge data computation system before and after predetermined interval; control thus air-cooled heat pump cold the ability output valve of water-heating machine system; adjusting is promptly and accurately carried out in output to unit capacity; avoid occurring long-term low discharge heavy-duty service; avoid occurring high voltage protective; increase the unit operation reliability, reach the effect of synthesis energy saving.
As shown in Figure 2, preferred embodiment of the present invention propose a kind of air-cooled heat pump cold water-heating machine system, comprise the ability output control module, described ability output control module comprises: discharge acquiring unit 201, computing unit 202 and output regulation and control unit 203, wherein:
Output regulation and control unit 203 is used for according to the described ability output changing value that calculates, the control air-cooled heat pump cold the ability output valve of water-heating machine system.
Present embodiment be applicable to air-cooled heat pump cold water-heating machine system heating operation and two kinds of different mode of operations of refrigerating operaton, can be when the terminal operating position difference of user causes systemic circulation discharge to change, realization increases unit operation reliability and synthesis energy saving effect to the adjusting promptly and accurately of system's unit capacity output.
Wherein, the adjusting control of system's unit capacity output is controlled by discharge.
At first, by discharge acquiring unit 201 gather air-cooled heat pumps cold the circulating water flow data of water-heating machine system different time points.Present embodiment is set with a time interval of gathering the circulating water flow data, before and after this predetermined blanking time, gather respectively air-cooled heat pump cold the circulating water flow data of water-heating machine system.
When concrete the collection, as a kind of embodiment, can by flowmeter obtain air-cooled heat pump before and after the predetermined interval cold the circulating water flow data of water-heating machine system.
As another kind of embodiment, can also export by the ability of gathering water pump, and then be converted into corresponding discharge output numerical value.Wherein:
Adopt the fixed situation of water pump frequently for the cold debt water-heating machine system of air-cooled heat pump, each power output of fixed water pump frequently is to there being a discharge.
Therefore, can obtain respectively air-cooled heat pump before and after the predetermined interval cold the power output of deciding the frequency water pump of water-heating machine system, then according to predetermined electric power-flow curve calculate obtain before and after the predetermined interval air-cooled heat pump cold the water-heating machine system circulating water flow data of the power output correspondence of water pump frequently surely.
In addition, for air-cooled heat pump cold water-heating machine system adopt the situation of variable frequency pump, during the variable frequency pump change of frequency, the circulating water flow of corresponding output also and then changes, be the discharge that each frequency has a correspondence, therefore, can obtain respectively air-cooled heat pump before and after the predetermined interval cold the output frequency of variable frequency pump of water-heating machine system; Then according to predetermined frequency-flow curve calculate obtain air-cooled heat pump before and after the predetermined interval cold the circulating water flow data of output frequency correspondence of water-heating machine system variable frequency pump.
When practical operation, can feed back to systematic master control board by the change of frequency with variable frequency pump, follow-up can calculating according to different discharge draws required unlatching air-cooled heat pump Leng hot water board number, thereby reaches the purpose of controlling the output of air-cooled heat pump cooling-water machine ability by the change of frequency of variable frequency pump.
Get access to air-cooled heat pump before and after predetermined blanking time cold after the circulating water flow data of water-heating machine system, by computing unit 202 calculate respectively the air-cooled heat pump of circulating water flow data correspondence before and after the predetermined interval cold the ability output valve of water-heating machine system, this ability output valve is refrigerating capacity or the heating capacity of system's output.
Then, calculate described air-cooled heat pump before and after the predetermined interval cold the difference of ability output valve of water-heating machine system, obtain described air-cooled heat pump cold the ability output changing value of water-heating machine system before and after described predetermined interval.
Such as, the fan-out capability difference of unit is Δ Q before and after the predetermined interval Δ t, then can arrange+Δ Q is the unit fan-out capability value of the required unloading of unit, on the contrary ,-Δ Q is the unit capacity output valve of the required loading of unit.
At last by the ability numerical value of output regulation and control unit 203 according to the above-mentioned required loading that calculates and unloading, thus the control air-cooled heat pump cold increase and the minimizing of unlatching platform number of hot water machine.Such as, for the fan-out capability difference of unit before and after the predetermined interval Δ t be-situation of Δ Q, show that then actual fan-out capability is less than normal, need the air-cooled heat pump of corresponding number of loading cold hot water machine; Fan-out capability difference for unit before and after the predetermined interval Δ t is+situation of Δ Q, show that then actual fan-out capability is bigger than normal, need the air-cooled heat pump of corresponding number of unloading cold hot water machine, thereby in time control the output of unit capacity, avoid occurring long-term low discharge heavy-duty service, increase the unit operation reliability, reach the effect of synthesis energy saving.
Need to prove, also can adopt above-mentioned control method to come regulating system ability output for the big cold of separate unit machine (perhaps big heat heats more) the system's unit that freezes more, change calculations according to the circulating water flow of system gets output capacity output changing value, the frequency of opening the refrigeration system of varying number in the unit or controlling variable frequency pump in the single refrigeration system is come regulating power output, thereby in time control the output of unit capacity, avoid occurring long-term low discharge heavy-duty service, increase the unit operation reliability, reach the effect of synthesis energy saving.
Present embodiment passes through such scheme; when systemic circulation discharge changes; by obtain air-cooled heat pump before and after the predetermined interval cold the circulating water flow data of water-heating machine system; according to the ability output changing value of systemic circulation discharge data computation system before and after predetermined interval; control thus air-cooled heat pump cold the ability output valve of water-heating machine system; adjusting is promptly and accurately carried out in output to unit capacity; avoid occurring long-term low discharge heavy-duty service; avoid occurring high voltage protective; increase the unit operation reliability, reach the effect of synthesis energy saving.
Above-mentioned only is the preferred embodiments of the present invention; be not so limit claim of the present invention; every equivalent structure or flow process conversion that utilizes specification of the present invention and accompanying drawing content to do; or directly or indirectly be used in other relevant technical field, all in like manner be included in the scope of patent protection of the present invention.
Claims (10)
1. an air-cooled heat pump Leng water-heating machine system ability output control method is characterized in that, may further comprise the steps:
Obtain air-cooled heat pump before and after the predetermined interval cold the circulating water flow data of water-heating machine system;
According to described circulating water flow data computation go out described air-cooled heat pump cold the ability output changing value of water-heating machine system before and after described predetermined interval;
According to the described ability output changing value that calculates, the control air-cooled heat pump cold the ability output valve of water-heating machine system.
2. method according to claim 1 is characterized in that, described obtain air-cooled heat pump before and after the predetermined interval cold the step of circulating water flow data of water-heating machine system comprise:
By flowmeter obtain air-cooled heat pump before and after the predetermined interval cold the circulating water flow data of water-heating machine system.
3. method according to claim 1 is characterized in that, described air-cooled heat pump cold water-heating machine system adopt fixed water pump frequently, described obtain air-cooled heat pump before and after the predetermined interval cold the step of circulating water flow data of water-heating machine system comprise:
Obtain respectively air-cooled heat pump before and after the predetermined interval cold the power output of deciding the frequency water pump of water-heating machine system;
According to predetermined electric power-flow curve calculate obtain before and after the predetermined interval air-cooled heat pump cold the water-heating machine system circulating water flow data of the power output correspondence of water pump frequently surely.
4. method according to claim 1 is characterized in that, described air-cooled heat pump cold water-heating machine system adopt variable frequency pump, described obtain air-cooled heat pump before and after the predetermined interval cold the step of circulating water flow data of water-heating machine system comprise:
Obtain respectively air-cooled heat pump before and after the predetermined interval cold the output frequency of variable frequency pump of water-heating machine system;
According to predetermined frequency-flow curve calculate obtain air-cooled heat pump before and after the predetermined interval cold the circulating water flow data of output frequency correspondence of water-heating machine system variable frequency pump.
5. according to each described method among the claim 1-4, it is characterized in that, described according to the circulating water flow data computation go out described air-cooled heat pump cold the step of the ability output changing value of water-heating machine system before and after described predetermined interval comprise:
Calculate respectively the air-cooled heat pump of circulating water flow data correspondence before and after the predetermined interval cold the ability output valve of water-heating machine system, described ability output valve is refrigerating capacity or the heating capacity of system's output;
Calculate described air-cooled heat pump before and after the predetermined interval cold the difference of ability output valve of water-heating machine system, obtain described air-cooled heat pump cold the ability output changing value of water-heating machine system before and after described predetermined interval.
6. an air-cooled heat pump Leng water-heating machine system is characterized in that, comprise the ability output control module, described ability output control module comprises:
The discharge acquiring unit, be used for obtaining air-cooled heat pump before and after the predetermined interval cold the circulating water flow data of water-heating machine system;
Computing unit, be used for according to described circulating water flow data computation go out described air-cooled heat pump cold the ability output changing value of water-heating machine system before and after described predetermined interval;
Output regulation and control unit is used for according to the described ability output changing value that calculates, the control air-cooled heat pump cold the ability output valve of water-heating machine system.
7. system according to claim 6 is characterized in that,
Described discharge acquiring unit, also be used for by flowmeter obtain air-cooled heat pump before and after the predetermined interval cold the circulating water flow data of water-heating machine system.
8. system according to claim 6 is characterized in that,
Described discharge acquiring unit, also be used for obtaining respectively air-cooled heat pump before and after the predetermined interval cold the power output of deciding the frequency water pump of water-heating machine system; According to predetermined electric power-flow curve calculate obtain before and after the predetermined interval air-cooled heat pump cold the water-heating machine system circulating water flow data of the power output correspondence of water pump frequently surely.
9. system according to claim 6 is characterized in that,
Described discharge acquiring unit, also be used for obtaining respectively air-cooled heat pump before and after the predetermined interval cold the output frequency of variable frequency pump of water-heating machine system;
According to predetermined frequency-flow curve calculate obtain air-cooled heat pump before and after the predetermined interval cold the circulating water flow data of output frequency correspondence of water-heating machine system variable frequency pump.
10. according to each described system among the claim 6-9, it is characterized in that,
Described computing unit, also be used for calculating respectively the air-cooled heat pump of circulating water flow data correspondence before and after the predetermined interval cold the ability output valve of water-heating machine system, described ability output valve is refrigerating capacity or the heating capacity of system's output; Calculate described air-cooled heat pump before and after the predetermined interval cold the difference of ability output valve of water-heating machine system, obtain described air-cooled heat pump cold the ability output changing value of water-heating machine system before and after described predetermined interval.
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| CN112556203A (en) * | 2020-12-14 | 2021-03-26 | 上海林内有限公司 | Microbubble water heater and operation method thereof |
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| Publication number | Publication date |
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| CN103335407B (en) | 2016-08-10 |
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