CN104964495A - Control method and device for modular air-cooled heat pump unit - Google Patents
Control method and device for modular air-cooled heat pump unit Download PDFInfo
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- CN104964495A CN104964495A CN201510454978.XA CN201510454978A CN104964495A CN 104964495 A CN104964495 A CN 104964495A CN 201510454978 A CN201510454978 A CN 201510454978A CN 104964495 A CN104964495 A CN 104964495A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
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Abstract
The invention discloses a control method and device for a modular air-cooled heat pump unit. The modular air-cooled heat pump unit comprises a plurality of module units which can be operated independently. The control method for the modular air-cooled heat pump unit comprises the steps that the number of the module units needing to be started of the modular air-cooled heat pump unit is confirmed when an operating instruction is received; the module units needing to be started are selected according to the confirmed number of the module units needing to be started and the accumulated operation duration of each module unit in the multiple module units; the selected module units needing to be started are controlled to work. According to the technical scheme of the control method and device for the modular air-cooled heat pump unit, the module units with short accumulated operation duration can be selected to work preferentially, so that it is guaranteed that the accumulated operation durations of the module units in the modular air-cooled heat pump unit are balanced, and the reliability and energy efficiency of a system are improved.
Description
Technical field
The present invention relates to air cooled heat pump modular chiller technical field, in particular to a kind of control method of air cooled heat pump modular chiller and a kind of control device of air cooled heat pump modular chiller.
Background technology
The system that air cooled heat pump modular chiller is made up of maximum 16 modular units, each modular unit can independent operating, all modular units are connected in parallel shared a set of inlet pipeline and outlet pipeline, and send the instructions such as switching on and shutting down, refrigerating/heating pattern, design temperature by a line control machine.To be calculated according to design temperature and total temperature difference of outlet water by main frame after line control machine sends start-up command and need open how many modular units, then send start and mode setting instruction to the modular unit of specifying, and do not need the modular unit opened to send shutdown command to all the other.
In the related, the modular unit of corresponding number of units is mainly opened successively according to address order from small to large, when so just causing Smaller load as a rule to run, only open several little modular units of address all the time, address large modular unit opening time is little.The modular unit little due to address is opened for a long time, therefore there is dirty stifled serious, the unit of the compressor lost of life, the condenser easily shortcoming such as aging, and the large modular unit in address is not owing to running for a long time, greatly wastes resource.
Therefore, how can guarantee that the running time of the modular unit in air cooled heat pump modular chiller is balanced, become technical problem urgently to be resolved hurrily with the reliability and efficiency that improve system.
Summary of the invention
The present invention is intended at least to solve one of technical problem existed in prior art or correlation technique.
For this reason, one object of the present invention is the control program proposing a kind of new air cooled heat pump modular chiller, can add up to run the shorter modular unit of duration and carry out work by prioritizing selection, and then can guarantee that the accumulative operation duration of the modular unit in air cooled heat pump modular chiller is balanced, improve reliability and the efficiency of system.
For achieving the above object, embodiment according to a first aspect of the invention, propose a kind of control method of air cooled heat pump modular chiller, described air cooled heat pump modular chiller comprises can the multiple stage modular unit of independent operating, the control method of described air cooled heat pump modular chiller, comprising: when receiving operating instruction, determining that described air cooled heat pump modular chiller needs the quantity of the modular unit opened; In the quantity of the modular unit opened according to the needs determined and described multiple stage modular unit, the accumulative operation duration of every platform modular unit, selects the modular unit needing to open; The modular unit that the needs controlling to select are opened carries out work.
The control method of air cooled heat pump modular chiller according to an embodiment of the invention, the quantity of modular unit that the needs determined by basis are opened and the accumulative operation duration of every platform modular unit, select the modular unit needing to open, make it possible to prioritizing selection add up to run the shorter modular unit of duration and carry out work, and then can guarantee that the accumulative operation duration of the modular unit in air cooled heat pump modular chiller is balanced, improve reliability and the efficiency of system.
The control method of air cooled heat pump modular chiller according to the abovementioned embodiments of the present invention, can also have following technical characteristic:
According to one embodiment of present invention, determine that described air cooled heat pump modular chiller needs the step of the quantity of the modular unit opened specifically to comprise: the operational mode obtaining described air cooled heat pump modular chiller; Difference according to described operational mode and the target temperature of described air cooled heat pump modular chiller and total leaving water temperature of described air cooled heat pump modular chiller determines that described air cooled heat pump modular chiller needs the quantity of the modular unit opened.
Particularly, when difference due to the difference of operational mode, different, the total leaving water temperature of target temperature of air cooled heat pump modular chiller is different, need the quantity of the modular unit opened different, therefore can need the quantity of the modular unit opened according to the difference determination module formula Air-Cooled Heat Pump Unit of the operational mode of air cooled heat pump modular chiller, target temperature and total leaving water temperature.
According to one embodiment of present invention, the accumulative operation duration of every platform modular unit in the quantity of the modular unit opened according to the needs determined and described multiple stage modular unit, select to need the step of the modular unit opened specifically to comprise: run the ascending order of duration according to accumulative in described multiple stage modular unit, the modular unit that the modular unit selecting predetermined quantity is opened as the needs selected, wherein, described predetermined quantity equals the described quantity needing the modular unit opened.
The control method of air cooled heat pump modular chiller according to an embodiment of the invention, by running according to accumulative in multiple stage modular unit the modular unit that the ascending select progressively of duration goes out to need unlatching, make it possible to prioritizing selection add up to run the shorter modular unit of duration and carry out work, and then can guarantee that the accumulative operation duration of the modular unit in air cooled heat pump modular chiller is balanced, improve reliability and the efficiency of system.
According to one embodiment of present invention, the step that the modular unit that the needs controlling to select are opened carries out work specifically comprises: the address information obtaining the modular unit of the needs unlatching selected; The modular unit controlling the needs unlatching selected according to the address information of the modular unit of the needs unlatching selected carries out work.
According to one embodiment of present invention, after controlling modular unit that the needs selected open and carrying out work, also comprise: add up and the operation duration of the modular unit of the needs unlatching selected described in storing.By adding up and storing the operation duration of the modular unit that the needs selected are opened, make it possible to need the modular unit opened to provide reference for selecting next time.
Embodiment according to a second aspect of the present invention, also proposed a kind of control device of air cooled heat pump modular chiller, described air cooled heat pump modular chiller comprises can the multiple stage modular unit of independent operating, the control device of described air cooled heat pump modular chiller, comprise: determining unit, for when receiving operating instruction, determine that described air cooled heat pump modular chiller needs the quantity of the modular unit opened; Selection unit, in the quantity of the modular unit opened for the needs determined according to described determining unit and described multiple stage modular unit, the accumulative operation duration of every platform modular unit, selects the modular unit needing to open; Control unit, the modular unit that the needs selected for controlling described selection unit are opened carries out work.
The control device of air cooled heat pump modular chiller according to an embodiment of the invention, the quantity of modular unit that the needs determined by basis are opened and the accumulative operation duration of every platform modular unit, select the modular unit needing to open, make it possible to prioritizing selection add up to run the shorter modular unit of duration and carry out work, and then can guarantee that the accumulative operation duration of the modular unit in air cooled heat pump modular chiller is balanced, improve reliability and the efficiency of system.
The control device of air cooled heat pump modular chiller according to the abovementioned embodiments of the present invention, can also have following technical characteristic:
According to one embodiment of present invention, described determining unit comprises: acquiring unit, for obtaining the operational mode of described air cooled heat pump modular chiller; According to the difference of the target temperature of described operational mode and described air cooled heat pump modular chiller and total leaving water temperature of described air cooled heat pump modular chiller, performance element, for determining that described air cooled heat pump modular chiller needs the quantity of the modular unit opened.
Particularly, when difference due to the difference of operational mode, different, the total leaving water temperature of target temperature of air cooled heat pump modular chiller is different, need the quantity of the modular unit opened different, therefore can need the quantity of the modular unit opened according to the difference determination module formula Air-Cooled Heat Pump Unit of the operational mode of air cooled heat pump modular chiller, target temperature and total leaving water temperature.
According to one embodiment of present invention, described selection unit specifically for: run the ascending order of duration according to accumulative in described multiple stage modular unit, the modular unit that the modular unit selecting predetermined quantity is opened as the needs selected, wherein, described predetermined quantity equals the described quantity needing the modular unit opened.
The control device of air cooled heat pump modular chiller according to an embodiment of the invention, by running according to accumulative in multiple stage modular unit the modular unit that the ascending select progressively of duration goes out to need unlatching, make it possible to prioritizing selection add up to run the shorter modular unit of duration and carry out work, and then can guarantee that the accumulative operation duration of the modular unit in air cooled heat pump modular chiller is balanced, improve reliability and the efficiency of system.
According to one embodiment of present invention, described control unit is specifically for the address information that obtains the modular unit that needs that described selection unit selects are opened, and the modular unit that the address information of the modular unit opened according to the needs selected controls the needs unlatching selected carries out work.
According to one embodiment of present invention, also comprise: statistics storage unit, after the modular unit opened for the needs that control to select at described control unit carries out work, add up and the operation duration of the modular unit of the needs unlatching selected described in storing.By adding up and storing the operation duration of the modular unit that the needs selected are opened, make it possible to need the modular unit opened to provide reference for selecting next time.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 shows the structural representation of air cooled heat pump modular chiller according to an embodiment of the invention;
Fig. 2 shows the schematic flow diagram of the control method of air cooled heat pump modular chiller according to an embodiment of the invention;
Fig. 3 shows the schematic block diagram of the control device of air cooled heat pump modular chiller according to an embodiment of the invention;
Fig. 4 shows the schematic flow diagram of the control method of air cooled heat pump modular chiller according to another embodiment of the invention.
Detailed description of the invention
In order to more clearly understand above-mentioned purpose of the present invention, feature and advantage, below in conjunction with the drawings and specific embodiments, the present invention is further described in detail.It should be noted that, when not conflicting, the feature in the embodiment of the application and embodiment can combine mutually.
Set forth a lot of detail in the following description so that fully understand the present invention; but; the present invention can also adopt other to be different from other modes described here and implement, and therefore, protection scope of the present invention is not by the restriction of following public specific embodiment.
As shown in Figure 1, air cooled heat pump modular chiller of the present invention comprise can independent operating multiple stage modular unit (as the 0# unit in Fig. 1,1# unit ..., n# unit), be connected in parallel between multiple modular unit.
Fig. 2 shows the schematic flow diagram of the control method of air cooled heat pump modular chiller according to an embodiment of the invention.
As shown in Figure 2, the control method of air cooled heat pump modular chiller, comprising: step 202 according to an embodiment of the invention, when receiving operating instruction, determines that described air cooled heat pump modular chiller needs the quantity of the modular unit opened; Step 204, in the quantity of the modular unit opened according to the needs determined and described multiple stage modular unit, the accumulative operation duration of every platform modular unit, selects the modular unit needing to open; Step 206, the modular unit that the needs controlling to select are opened carries out work.
The quantity of modular unit that the needs determined by basis are opened and the accumulative operation duration of every platform modular unit, select the modular unit needing to open, make it possible to prioritizing selection add up to run the shorter modular unit of duration and carry out work, and then can guarantee that the accumulative operation duration of the modular unit in air cooled heat pump modular chiller is balanced, improve reliability and the efficiency of system.
The control method of air cooled heat pump modular chiller according to the abovementioned embodiments of the present invention, can also have following technical characteristic:
According to one embodiment of present invention, determine that described air cooled heat pump modular chiller needs the step of the quantity of the modular unit opened specifically to comprise: the operational mode obtaining described air cooled heat pump modular chiller; Difference according to described operational mode and the target temperature of described air cooled heat pump modular chiller and total leaving water temperature of described air cooled heat pump modular chiller determines that described air cooled heat pump modular chiller needs the quantity of the modular unit opened.
Particularly, when difference due to the difference of operational mode, different, the total leaving water temperature of target temperature of air cooled heat pump modular chiller is different, need the quantity of the modular unit opened different, therefore can need the quantity of the modular unit opened according to the difference determination module formula Air-Cooled Heat Pump Unit of the operational mode of air cooled heat pump modular chiller, target temperature and total leaving water temperature.
According to one embodiment of present invention, the accumulative operation duration of every platform modular unit in the quantity of the modular unit opened according to the needs determined and described multiple stage modular unit, select to need the step of the modular unit opened specifically to comprise: run the ascending order of duration according to accumulative in described multiple stage modular unit, the modular unit that the modular unit selecting predetermined quantity is opened as the needs selected, wherein, described predetermined quantity equals the described quantity needing the modular unit opened.
By running according to accumulative in multiple stage modular unit the modular unit that the ascending select progressively of duration goes out to need unlatching, make it possible to prioritizing selection add up to run the shorter modular unit of duration and carry out work, and then can guarantee that the accumulative operation duration of the modular unit in air cooled heat pump modular chiller is balanced, improve reliability and the efficiency of system.
According to one embodiment of present invention, the step that the modular unit that the needs controlling to select are opened carries out work specifically comprises: the address information obtaining the modular unit of the needs unlatching selected; The modular unit controlling the needs unlatching selected according to the address information of the modular unit of the needs unlatching selected carries out work.
According to one embodiment of present invention, after controlling modular unit that the needs selected open and carrying out work, also comprise: add up and the operation duration of the modular unit of the needs unlatching selected described in storing.By adding up and storing the operation duration of the modular unit that the needs selected are opened, make it possible to need the modular unit opened to provide reference for selecting next time.
Fig. 3 shows the schematic block diagram of the control device of air cooled heat pump modular chiller according to an embodiment of the invention.
As shown in Figure 3, the control device 300 of air cooled heat pump modular chiller according to an embodiment of the invention, comprising: determining unit 302, for when receiving operating instruction, determines that described air cooled heat pump modular chiller needs the quantity of the modular unit opened; Selection unit 304, in the quantity of the modular unit opened for the needs determined according to described determining unit 302 and described multiple stage modular unit, the accumulative operation duration of every platform modular unit, selects the modular unit needing to open; Control unit 306, the modular unit that the needs selected for controlling described selection unit 304 are opened carries out work.
The quantity of modular unit that the needs determined by basis are opened and the accumulative operation duration of every platform modular unit, select the modular unit needing to open, make it possible to prioritizing selection add up to run the shorter modular unit of duration and carry out work, and then can guarantee that the accumulative operation duration of the modular unit in air cooled heat pump modular chiller is balanced, improve reliability and the efficiency of system.
The control device 300 of air cooled heat pump modular chiller according to the abovementioned embodiments of the present invention, can also have following technical characteristic:
According to one embodiment of present invention, described determining unit 302 comprises: acquiring unit 3022, for obtaining the operational mode of described air cooled heat pump modular chiller; According to the difference of the target temperature of described operational mode and described air cooled heat pump modular chiller and total leaving water temperature of described air cooled heat pump modular chiller, performance element 3024, for determining that described air cooled heat pump modular chiller needs the quantity of the modular unit opened.
Particularly, when difference due to the difference of operational mode, different, the total leaving water temperature of target temperature of air cooled heat pump modular chiller is different, need the quantity of the modular unit opened different, therefore can need the quantity of the modular unit opened according to the difference determination module formula Air-Cooled Heat Pump Unit of the operational mode of air cooled heat pump modular chiller, target temperature and total leaving water temperature.
According to one embodiment of present invention, described selection unit 304 specifically for: run the ascending order of duration according to accumulative in described multiple stage modular unit, the modular unit that the modular unit selecting predetermined quantity is opened as the needs selected, wherein, described predetermined quantity equals the described quantity needing the modular unit opened.
By running according to accumulative in multiple stage modular unit the modular unit that the ascending select progressively of duration goes out to need unlatching, make it possible to prioritizing selection add up to run the shorter modular unit of duration and carry out work, and then can guarantee that the accumulative operation duration of the modular unit in air cooled heat pump modular chiller is balanced, improve reliability and the efficiency of system.
According to one embodiment of present invention, described control unit 306 is specifically for the address information that obtains the modular unit that needs that described selection unit 304 selects are opened, and the modular unit that the address information of the modular unit opened according to the needs selected controls the needs unlatching selected carries out work.
According to one embodiment of present invention, also comprise: statistics storage unit 308, after the modular unit opened for the needs that control to select at described control unit 306 carries out work, add up and the operation duration of the modular unit of the needs unlatching selected described in storing.By adding up and storing the operation duration of the modular unit that the needs selected are opened, make it possible to need the modular unit opened to provide reference for selecting next time.
Fig. 4 shows the schematic flow diagram of the control method of air cooled heat pump modular chiller according to another embodiment of the invention.
As shown in Figure 4, the control method of air cooled heat pump modular chiller according to another embodiment of the invention, comprising:
Step 402, receiving mode start-up command.
Step 404, judges operational mode, if refrigeration mode, then performs step 406; If heating mode, then perform step 408.
Step 406,0# main frame goes out to need opening module unit number of units according to the mathematic interpolation of the design temperature Ts under refrigeration mode and total leaving water temperature.
Step 408,0# main frame goes out to need opening module unit number of units according to the mathematic interpolation of the design temperature Ts under heating mode and total leaving water temperature.
Step 410, read compressor history accumulative operation duration (be described for the air cooled heat pump modular chiller with 16 modular units in this embodiment, those skilled in the art it should be noted that it also can is the modular unit that air cooled heat pump modular chiller also can comprise other quantity) in 0# to 15# modular unit.
Step 412, the compressor accumulated running time in each modular unit arranges out corresponding module element address by order from small to large.
Step 414, the modular unit sequence of addresses according to arranging out opens the modular unit that need open successively.
Step 416, the accumulative each modular unit compressor operating time of timing, and preserve, preferably, can be saved in E2PROM.
The technical scheme of the above embodiment of the present invention is by memory each modular unit compressor accumulated running time, the modular unit that preferential unlatching each compressor history accumulated running time is few, each compressor accumulated running time after a long period is made substantially to reach balanced, achieve each modular unit compressor rotation to control, reach the object extending and compress service life, improve system reliability and efficiency.
In addition, also can according to when system not power down, press module's address order from small to large during odd-times start to open, the scheme of opening by module's address order from big to small during even-times start controls each modular unit of air cooled heat pump modular chiller.
More than be described with reference to the accompanying drawings technical scheme of the present invention, the present invention proposes a kind of control program of new air cooled heat pump modular chiller, can add up to run the shorter modular unit of duration and carry out work by prioritizing selection, and then can guarantee that the accumulative operation duration of the modular unit in air cooled heat pump modular chiller is balanced, improve reliability and the efficiency of system.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a control method for air cooled heat pump modular chiller, is characterized in that, described air cooled heat pump modular chiller comprises can the multiple stage modular unit of independent operating, and the control method of described air cooled heat pump modular chiller, comprising:
When receiving operating instruction, determine that described air cooled heat pump modular chiller needs the quantity of the modular unit opened;
In the quantity of the modular unit opened according to the needs determined and described multiple stage modular unit, the accumulative operation duration of every platform modular unit, selects the modular unit needing to open;
The modular unit that the needs controlling to select are opened carries out work.
2. the control method of air cooled heat pump modular chiller according to claim 1, is characterized in that, determines that described air cooled heat pump modular chiller needs the step of the quantity of the modular unit opened specifically to comprise:
Obtain the operational mode of described air cooled heat pump modular chiller;
Difference according to described operational mode and the target temperature of described air cooled heat pump modular chiller and total leaving water temperature of described air cooled heat pump modular chiller determines that described air cooled heat pump modular chiller needs the quantity of the modular unit opened.
3. the control method of air cooled heat pump modular chiller according to claim 1, it is characterized in that, the accumulative operation duration of every platform modular unit in the quantity of the modular unit opened according to the needs determined and described multiple stage modular unit, select to need the step of the modular unit opened specifically to comprise:
Run the ascending order of duration, the modular unit that the modular unit selecting predetermined quantity is opened as the needs selected according to accumulative in described multiple stage modular unit, wherein, described predetermined quantity equals the described quantity needing the modular unit opened.
4. the control method of air cooled heat pump modular chiller according to claim 1, is characterized in that, the step that the modular unit that the needs controlling to select are opened carries out work specifically comprises:
Obtain the address information of the modular unit of the needs unlatching selected;
The modular unit controlling the needs unlatching selected according to the address information of the modular unit of the needs unlatching selected carries out work.
5. the control method of air cooled heat pump modular chiller according to any one of claim 1 to 4, is characterized in that, after the modular unit of the needs unlatching controlling to select carries out work, also comprises:
Add up and the operation duration of modular unit opened of the needs selected described in storing.
6. a control device for air cooled heat pump modular chiller, is characterized in that, described air cooled heat pump modular chiller comprises can the multiple stage modular unit of independent operating, and the control device of described air cooled heat pump modular chiller, comprising:
Determining unit, for when receiving operating instruction, determines that described air cooled heat pump modular chiller needs the quantity of the modular unit opened;
Selection unit, in the quantity of the modular unit opened for the needs determined according to described determining unit and described multiple stage modular unit, the accumulative operation duration of every platform modular unit, selects the modular unit needing to open;
Control unit, the modular unit that the needs selected for controlling described selection unit are opened carries out work.
7. the control device of air cooled heat pump modular chiller according to claim 6, is characterized in that, described determining unit comprises:
Acquiring unit, for obtaining the operational mode of described air cooled heat pump modular chiller;
According to the difference of the target temperature of described operational mode and described air cooled heat pump modular chiller and total leaving water temperature of described air cooled heat pump modular chiller, performance element, for determining that described air cooled heat pump modular chiller needs the quantity of the modular unit opened.
8. the control device of air cooled heat pump modular chiller according to claim 6, is characterized in that, described selection unit specifically for:
Run the ascending order of duration, the modular unit that the modular unit selecting predetermined quantity is opened as the needs selected according to accumulative in described multiple stage modular unit, wherein, described predetermined quantity equals the described quantity needing the modular unit opened.
9. the control device of air cooled heat pump modular chiller according to claim 6, is characterized in that, described control unit specifically for:
Obtain the address information of the modular unit of the needs unlatching that described selection unit is selected, the modular unit controlling the needs unlatching selected according to the address information of the modular unit of the needs unlatching selected carries out work.
10. the control device of the air cooled heat pump modular chiller according to any one of claim 6 to 9, is characterized in that, also comprises:
Statistics storage unit, after the modular unit opened for the needs that control to select at described control unit carries out work, add up and the operation duration of the modular unit of the needs unlatching selected described in storing.
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CN109268924B (en) * | 2018-08-23 | 2020-01-10 | 珠海格力电器股份有限公司 | Method for controlling on-off number of heat pump units and heat pump unit system |
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