CN105387570B - Execution capacity adjusting method and device of water chilling unit - Google Patents
Execution capacity adjusting method and device of water chilling unit Download PDFInfo
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- CN105387570B CN105387570B CN201510863023.XA CN201510863023A CN105387570B CN 105387570 B CN105387570 B CN 105387570B CN 201510863023 A CN201510863023 A CN 201510863023A CN 105387570 B CN105387570 B CN 105387570B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 194
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 230000008014 freezing Effects 0.000 claims description 2
- 238000007710 freezing Methods 0.000 claims description 2
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims 1
- 230000006641 stabilisation Effects 0.000 abstract description 3
- 238000011105 stabilization Methods 0.000 abstract description 3
- 230000033228 biological regulation Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/56—Remote control
- F24F11/59—Remote control for presetting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention provides an execution capacity adjusting method and device of a water chilling unit, wherein the method comprises the following steps: obtaining the outlet water temperature of the chilled water of the water chilling unit when the water chilling unit is started; determining the difference between the outlet water temperature of the chilled water and a preset target value; determining an adjustment target value according to the difference value, and determining a frequency loading rate according to the adjustment target value; and adjusting the execution capacity of the water chilling unit according to the frequency loading rate. The invention solves the technical problem of excessive loading and unloading of the unit caused by the adjustment of the same frequency loading rate in the prior art, thereby effectively reducing the time from starting to stabilization and achieving the purpose of stable and faster starting of the unit.
Description
Technical field
The present invention relates to handpiece Water Chilling Units technical field, in particular to a kind of executive capability regulation side of handpiece Water Chilling Units
Method and device.
Background technology
At present, variable speed centrifugal chiller plants are by monitoring chilled water leaving water temperature in real time, and according to it with setting mostly
Generating unit speed (frequency) is adjusted the difference of target value, so as to reach the purpose of regulation unit capacity.Specifically, when
When chilled water leaving water temperature is higher than desired value, unit executive capability increase action, when chilled water leaving water temperature is less than desired value,
The reduction of unit executive capability acts, when chilled water leaving water temperature is equal to desired value, unit executive capability holding action.
However, although above-mentioned this adjusting method can cause handpiece Water Chilling Units to reach user's requirement, because water temperature is adjusted
Be present hysteresis quality in section, that is, adjusted after generating unit speed or frequency, it is necessary to after after a while could be so that temperature reaches adjustment
Rotating speed or frequency corresponding to temperature.So in the case where chilled water leaving water temperature constantly obtains close to desired value, it is easy to
Cause unit excessively to load, therefore longer time is needed from stable operation is started to, however, actual chilled water leaving water temperature
Continuous fluctuation, the difference between actual chilled water leaving water temperature and desired value can be caused also constantly to fluctuate again, thus unit
Continue executing with therewith plus uninstall action is until stable.
In view of the above-mentioned problems, not yet propose effective settling mode at present.
The content of the invention
It is steady, very fast to reach unit the embodiments of the invention provide a kind of executive capability adjusting method of handpiece Water Chilling Units
The purpose of startup, this method include：
Obtain the chilled water leaving water temperature of handpiece Water Chilling Units when starting；
Determine the difference between the chilled water leaving water temperature and predetermined target value；
Adjustment desired value is determined according to the difference, and frequency loading speed is determined according to the adjustment desired value；
The executive capability of handpiece Water Chilling Units is adjusted according to the frequency loading speed.
In one embodiment, adjustment desired value is determined according to the difference, and determined according to the adjustment desired value
Frequency loading speed, including：
In the case where the difference is more than first threshold, using first object value as the adjustment desired value, with institute
First rate corresponding to first object value is stated as the frequency loading speed；
Be less than or equal to the first threshold and more than in the case of Second Threshold in the difference, using the second desired value as
The adjustment desired value, the frequency loading speed is used as using the second speed corresponding with second desired value；
In the case where the difference is less than or equal to the Second Threshold, using the 3rd desired value as the adjustment target
Value, the frequency loading speed is used as using third speed corresponding with the 3rd desired value；
Wherein, the first threshold is more than the Second Threshold, and the first rate is more than second speed, and described
Two speed are more than the third speed.
In one embodiment, speed is being loaded using first rate corresponding with the first object value as the frequency
In the case of rate, after the executive capability of handpiece Water Chilling Units is adjusted according to the frequency loading speed, methods described is also
Including：
It is determined that the executive capability to handpiece Water Chilling Units be adjusted after chilled water leaving water temperature and the first object value it
Between difference whether be less than the 3rd threshold value；
If less than the 3rd threshold value and continue the first scheduled duration, then using second desired value as the adjustment target
Value, and the frequency loading speed is used as using the second speed corresponding with second desired value；
Wherein, the Second Threshold is more than the 3rd threshold value.
In one embodiment, speed is being loaded using the second speed corresponding with second desired value as the frequency
In the case of rate, after the executive capability of handpiece Water Chilling Units is adjusted according to the frequency loading speed, methods described is also
Including：
It is determined that the executive capability to handpiece Water Chilling Units be adjusted after chilled water leaving water temperature and second desired value it
Between difference whether be less than the 4th threshold value；
If less than the 4th threshold value and continue the second scheduled duration, then using the 3rd desired value as the adjustment
Desired value, and the frequency loading speed is used as using third speed corresponding with the 3rd desired value；
Wherein, the Second Threshold is more than the 4th threshold value.
In one embodiment, the 3rd desired value is equal to the predetermined target value.
In one embodiment, the chilled water leaving water temperature of handpiece Water Chilling Units when starting is obtained, including：
The temperature sensor installed from the outlet pipe of chilled water obtains the chilled water leaving water temperature of analog signal；
The chilled water leaving water temperature of the analog signal is converted to the chilled water leaving water temperature of data signal.
The embodiment of the present invention additionally provides a kind of executive capability adjusting means of handpiece Water Chilling Units, with reach unit it is steady, compared with
The purpose started soon, the device include：
Acquisition module, the chilled water leaving water temperature of handpiece Water Chilling Units when starting for obtaining；
Difference determining module, for determining the difference between the chilled water leaving water temperature and predetermined target value；
Rate determination module, for determining adjustment desired value according to the difference, and determined according to the adjustment desired value
Frequency loading speed；
Adjustment module, for the executive capability of handpiece Water Chilling Units to be adjusted according to the frequency loading speed.
In one embodiment, the rate determination module includes：
First rate determining unit, for the difference be more than first threshold in the case of, using first object value as
The adjustment desired value, the frequency loading speed is used as using first rate corresponding with the first object value；
Second rate determination unit, for being less than or equal to the first threshold and more than the feelings of Second Threshold in the difference
Under condition, using the second desired value as the adjustment desired value, using the second speed corresponding with second desired value described in
Frequency loading speed；
Third speed determining unit, in the case of being less than or equal to the Second Threshold in the difference, by the 3rd mesh
Scale value is used as the frequency loading speed as the adjustment desired value using third speed corresponding with the 3rd desired value；
Wherein, the first threshold is more than the Second Threshold, and the first rate is more than second speed, and second speed is big
In the third speed.
In one embodiment, the 3rd desired value is equal to the predetermined target value.
In one embodiment, the acquisition module includes：
Temperature collecting cell, the temperature sensor for being installed from the outlet pipe of chilled water obtain the freezing of analog signal
Water leaving water temperature；
AD conversion unit, for the chilled water leaving water temperature of the analog signal to be converted to the chilled water of data signal
Leaving water temperature.
In the above-described embodiments, difference when first determining to start between chilled water leaving water temperature and predetermined target value, then
Adjustment desired value is determined according to difference, and determines frequency loading velocity, different differences corresponds to different adjustment desired value and not
Same frequency loading speed, the executive capability of handpiece Water Chilling Units is adjusted according to the frequency loading speed of determination.By above-mentioned different
The mode that difference corresponds to different frequency loading speeds is solved and adjusted in the prior art using same frequency loading speed
Caused by whole unit excessively plus unloading technical problem, stablize the required time from starting to so as to effectively reduce, reach
The purpose that unit is steady, comparatively fast starts.
Brief description of the drawings
The accompanying drawing for forming the part of the application is used for providing a further understanding of the present invention, schematic reality of the invention
Apply example and its illustrate to be used to explain the present invention, do not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the method flow diagram of the executive capability adjusting method of handpiece Water Chilling Units according to embodiments of the present invention；
Fig. 2 is the system schematic of air-conditioner set according to embodiments of the present invention；
Fig. 3 is the another method flow chart of the executive capability adjusting method of handpiece Water Chilling Units according to embodiments of the present invention；
Fig. 4 is the effect diagram reached using basic startup control；
Fig. 5 is the effect diagram that interim regulation according to embodiments of the present invention reaches；
Fig. 6 is the structured flowchart of the executive capability adjusting means of handpiece Water Chilling Units according to embodiments of the present invention.
Embodiment
It is right with reference to embodiment and accompanying drawing for the object, technical solutions and advantages of the present invention are more clearly understood
The present invention is described in further details.Here, the exemplary embodiment of the present invention and its illustrate to be used to explain the present invention, but simultaneously
It is not as a limitation of the invention.
Regulative mode in view of the existing executive capability to handpiece Water Chilling Units is to go out water temperature only in accordance with current chilled water
Whether degree and predetermined target value are equal to determine whether to carry out plus uninstall action, is unloaded because chilled water leaving water temperature can lag behind to add
Load acts, if from start to finish use identical frequency loading speed, easilys lead to unit excessively plus unloads so that from opening
Moving stabilization needs long time, therefore, can be different based on the difference between chilled water leaving water temperature and desired value, it is determined that
Different frequency loading speeds.
On the other hand, in this example, there is provided a kind of executive capability adjusting method of handpiece Water Chilling Units, as shown in figure 1, including following
Step：
Step 101：Obtain the chilled water leaving water temperature of handpiece Water Chilling Units when starting；
Step 102：Determine the difference between the chilled water leaving water temperature and predetermined target value；
Step 103：Adjustment desired value is determined according to the difference, and frequency loading speed is determined according to the adjustment desired value
Rate；
Step 104：The executive capability of handpiece Water Chilling Units is adjusted according to the frequency loading speed.
In upper example, difference when first determining to start between chilled water leaving water temperature and predetermined target value, then according to difference
Value determines adjustment desired value, and determines frequency loading velocity, and different differences corresponds to different adjustment desired values and different frequencies
Rate loading speed, the executive capability of handpiece Water Chilling Units is adjusted according to the frequency loading speed of determination.Pass through above-mentioned different difference pair
Answer the mode of different frequency loading speeds to solve to be adjusted and lead using same frequency loading speed in the prior art
The unit of cause excessively plus unloading technical problem, stablize the required time from starting to so as to effectively reduce, reached unit
Steadily, the purpose comparatively fast started.
Specifically, in view of that when difference is larger, faster loading speed can be used, when difference is smaller, can be adopted
With slower loading speed.For example, two threshold values can be set：First threshold and Second Threshold, wherein, first threshold and second
Threshold value, according to the size between difference and two threshold values compared with, using different speed as frequency loading speed.Specifically,
It can be divided into the case of following three kinds：
1) in the case where the difference is more than first threshold, using first object value as the adjustment desired value, with
First rate is as the frequency loading speed corresponding to the first object value；
2) it is less than or equal to the first threshold and more than in the case of Second Threshold in the difference, the second desired value is made
For the adjustment desired value, the frequency loading speed is used as using the second speed corresponding with second desired value；
3) in the case where the difference is less than or equal to the Second Threshold, using the 3rd desired value as the adjustment target
Value, the frequency loading speed is used as using third speed corresponding with the 3rd desired value；
Wherein, above-mentioned first threshold is more than Second Threshold, and above-mentioned first rate is more than the second speed, and the second speed is big
In third speed.
Regulative mode corresponding to three cases above, the chilled water leaving water temperature of handpiece Water Chilling Units when only allowing for startup
Difference between desired value is adjusted, but does not consider the regulation result after adjustment.By adjustment operation in chilled water
The time delay that is embodied on leaving water temperature and adjustment result all be used as Consideration, by the way of interim adjustment can be used,
In one embodiment：
1) in the case of using first rate corresponding with the first object value as the frequency loading speed, in root
After the executive capability of handpiece Water Chilling Units is adjusted according to the frequency loading speed, the above method can also include：It is determined that pair
The executive capability of handpiece Water Chilling Units be adjusted after chilled water leaving water temperature and the first object value between difference it is whether small
In the 3rd threshold value；If less than the 3rd threshold value and continue the first scheduled duration, then using second desired value as the adjustment
Desired value, and the frequency loading speed is used as using the second speed corresponding with second desired value；Wherein, second threshold
Value is more than the 3rd threshold value.
2) in the case of using the second speed corresponding with second desired value as the frequency loading speed, in root
After the executive capability of handpiece Water Chilling Units is adjusted according to the frequency loading speed, the above method can also include：It is determined that pair
The executive capability of handpiece Water Chilling Units be adjusted after chilled water leaving water temperature and second desired value between difference it is whether small
In the 4th threshold value；If less than the 4th threshold value and continue the second scheduled duration, then using the 3rd desired value as described in
Desired value is adjusted, and the frequency loading speed is used as using third speed corresponding with the 3rd desired value；Wherein, described
Two threshold values are more than the 4th threshold value.
That is, after using first rate as frequency loading speed or using the second speed as frequency loading speed,
It is determined that whether default desired value is may be less than in certain time length after adjustment, if it is, can enter next
Stage, i.e., frequency loading velocity is suitably reduced, to avoid the generation of load condition.
The 3rd above-mentioned threshold value can be equal to the 4th threshold value, can also be not equal to the 4th threshold value, and specific value can be according to
Selection is actually needed, the 3rd above-mentioned desired value can be equal to predetermined target value, i.e., last adjustment desired value is still set to original
Predetermined target value.
The unit brought for traditional start-up course water temperature hysteresis quality can not timely respond to water temperature change, unit excess
Add/unload, start to the stabilization process time it is longer the problem of, in this example using the side of control by stages unit starting process
Formula, start-up course is divided into by different phase manufacture " buffering " according to the real-time difference situation of chilled water leaving water temperature and desired value,
So that unit carries out interim regulation in start-up course according to different target value, it is stable quick so that temperature reaches so as to reach
To the purpose of initial target value.
The executive capability adjusting method of above-mentioned handpiece Water Chilling Units is illustrated present invention also offers a specific embodiment,
It is important to note, however, that the specific embodiment is not merely to the explanation present invention, forms inappropriate limitation of the present invention.
The system schematic of air-conditioner set is illustrated in figure 2, including：It is condenser, compressor, throttling arrangement, evaporator, cold
Freeze water leaving water temperature sensors, MCU microprogram control units, A/D analog converters.Installed on evaporator chilled water outlet pipe
Temperature sensor, chilled water leaving water temperature is monitored by the temperature sensor in real time, and Monitoring Data is passed through into A/D analog-converteds
Device is converted to data signal and is sent to MCU microprogram control units, and stores into memory RAM.
By contrasting chilled water leaving water temperature and real-time difference (the △ T of the chilled water leaving water temperature desired value of settingFreeze out),
It is sectional-regulated that MCU gives the different desired value of compressor.Process is adjusted for the stage for tending to each desired value, according to poor in real time
Value △ TFreeze outSize control plus/rate of debarkation.
Specific control process can with as shown in figure 3, including：
Obtain chilled water leaving water temperature data；
The difference △ T of chilled water leaving water temperature and desired value when judging to startFreeze outWith first threshold (a) and Second Threshold
(b) size：
1) when upon start up, the real-time difference of chilled water leaving water temperature and desired value is larger, i.e., as △ TFreeze out>During a, automatically
It is higher value (T to adjust desired value TsetTarget+ A), unit presses frequency loading speed F1 regulating powers according to this desired value；
After adjustment, if real-time △ TFreeze outSmaller (that is, continuous n minutes, △ T in continuous n minutesFreeze out≤ c) when, enter
Stage 2 is adjusted, wherein, the desired value relative phases 1 in stage 2 are smaller, can position：TTarget+ B), unit is i.e. according to this fresh target
Value presses frequency loading speed F2 regulating powers；
After the regulation in stage 2 is entered, if △ T in real timeFreeze outSmaller (that is, continuous n minutes, △ T in continuous n minutesFreeze out
≤ c) when, adjusted into the stage 3, i.e., according to the desired value T initially set upTargetUnit capacity is adjusted, now by frequency loading speed
F3 carries out capacity adjustment, wherein, F1 ＞ F2 ＞ F3；
2) upon start up, b<△TFreeze out≤ a, being directly entered the stage 2 is adjusted；
After the regulation in stage 2 is entered, if △ T in real timeFreeze outSmaller (that is, continuous n minutes, △ T in continuous n minutesFreeze out
≤ c) when, adjusted into the stage 3, i.e., according to the desired value T initially set upTargetUnit capacity is adjusted, now by frequency loading speed
F3 carries out capacity adjustment；
3) upon start up, △ TFreeze out≤ b, being directly entered the stage 3 is adjusted, i.e., according to the desired value T initially set upTargetRegulation
Unit capacity, now carry out capacity adjustment by frequency loading speed F3.
Wherein, above-mentioned A ＞ B, a ＞ b ＞ c, F1 ＞ F2 ＞ F3.
The effect diagram reached using basic startup control is illustrated in figure 4, is illustrated in figure 5 the rank using this example
Section property adjusts the effect diagram reached, to Fig. 4 and Fig. 5 analyses as can be seen that passing through above-mentioned several interim regulations, relative to
For basic startup control, can more smooth starting, and be considerably reduced from the stable time is started to, so as to reach
Unit water temperature controls the purpose of soft landing.
Based on same inventive concept, a kind of executive capability regulation dress of handpiece Water Chilling Units is additionally provided in the embodiment of the present invention
Put, as described in the following examples.Because the executive capability adjusting means of handpiece Water Chilling Units solves the principle and handpiece Water Chilling Units of problem
Executive capability adjusting method it is similar, therefore the implementation of the executive capability adjusting means of handpiece Water Chilling Units may refer to handpiece Water Chilling Units
The implementation of executive capability adjusting method, repeat part and repeat no more.Used below, term " unit " or " module " can be with
Realize the combination of the software and/or hardware of predetermined function.Although the device described by following examples is preferably come real with software
It is existing, but hardware, or the realization of the combination of software and hardware is also what may and be contemplated.Fig. 6 is the embodiment of the present invention
A kind of structured flowchart of the executive capability adjusting means of handpiece Water Chilling Units, as shown in fig. 6, can include：Acquisition module 601, difference
Determining module 602, rate determination module 603 and adjustment module 604, are illustrated to the structure below.
Acquisition module 601, the chilled water leaving water temperature of handpiece Water Chilling Units when starting for obtaining；
Difference determining module 602, for determining the difference between the chilled water leaving water temperature and predetermined target value；
Rate determination module 603, for determining adjustment desired value according to the difference, and it is true according to the adjustment desired value
Determine frequency loading speed；
Adjustment module 604, for the executive capability of handpiece Water Chilling Units to be adjusted according to the frequency loading speed.
In one embodiment, rate determination module 603 can include：First rate determining unit, for described
In the case that difference is more than first threshold, using first object value as the adjustment desired value, with the first object value pair
The first rate answered is as the frequency loading speed；Second rate determination unit, it is described for being less than or equal in the difference
First threshold and more than in the case of Second Threshold, using the second desired value as the adjustment desired value, with second mesh
Second speed corresponding to scale value is as the frequency loading speed；Third speed determining unit, for the difference be less than etc.
In the case of the Second Threshold, using the 3rd desired value as the adjustment desired value, with corresponding with the 3rd desired value
Third speed as the frequency loading speed；Wherein, the first threshold is more than the Second Threshold, the first rate
More than second speed, second speed is more than the third speed.
In one embodiment, above-mentioned 3rd desired value can be equal to predetermined target value.
In one embodiment, acquisition module 601 can include：Temperature collecting cell, for the water outlet from chilled water
The temperature sensor installed on pipe obtains the chilled water leaving water temperature of analog signal；AD conversion unit, for by the simulation
The chilled water leaving water temperature of signal is converted to the chilled water leaving water temperature of data signal.
In one embodiment, the executive capability adjusting means of handpiece Water Chilling Units can also with the first object value
In the case that corresponding first rate is as the frequency loading speed, according to the frequency loading speed to handpiece Water Chilling Units
After executive capability is adjusted, it is determined that the executive capability to handpiece Water Chilling Units be adjusted after chilled water leaving water temperature with it is described
Whether the difference between first object value is less than the 3rd threshold value；If less than the 3rd threshold value and continue the first scheduled duration, then will
Second desired value is used as the frequency as the adjustment desired value, and using the second speed corresponding with second desired value
Rate loading speed；Wherein, the Second Threshold is more than the 3rd threshold value.
In one embodiment, the executive capability adjusting means of handpiece Water Chilling Units can also with second desired value
In the case that corresponding second speed is as the frequency loading speed, according to the frequency loading speed to handpiece Water Chilling Units
After executive capability is adjusted, methods described also includes：
It is determined that the executive capability to handpiece Water Chilling Units be adjusted after chilled water leaving water temperature and second desired value it
Between difference whether be less than the 4th threshold value；If less than the 4th threshold value and continue the second scheduled duration, then by the described 3rd
Desired value loads speed using third speed corresponding with the 3rd desired value as the frequency as the adjustment desired value
Rate；Wherein, the Second Threshold is more than the 4th threshold value.
In another embodiment, a kind of software is additionally provided, the software is used to perform above-described embodiment and preferred reality
Apply the technical scheme described in mode.
In another embodiment, a kind of storage medium is additionally provided, above-mentioned software is stored with the storage medium, should
Storage medium includes but is not limited to：CD, floppy disk, hard disk, scratch pad memory etc..
As can be seen from the above description, the embodiment of the present invention realizes following technique effect：It is cold when first determining to start
The difference frozen between water leaving water temperature and predetermined target value, adjustment desired value is then determined according to difference, and determine that frequency loads
Speed, different differences correspond to different adjustment desired values and different frequency loading speeds, and speed is loaded according to the frequency of determination
Rate adjusts the executive capability of handpiece Water Chilling Units.Solved by way of different frequency loading speeds is corresponded to above-mentioned different difference
Unit excessively adds the technical problem of unloading caused by being adjusted in the prior art using same frequency loading speed, so as to
Effectively reduce and stablize the required time from starting to, reached the purpose that unit is steady, comparatively fast starts.Can be with aforesaid way
So that centrifugal refrigerating machines start-up course is steady, start water temperature stability time to during reaching customer charge is avoided to grow, machine
Group by a small margin plus unloading the problem of, can effectively reduce unit from start to even running time, so as to improve reliability and
Consumer's Experience comfort level.
Obviously, those skilled in the art should be understood that each module of the above-mentioned embodiment of the present invention or each step can be with
Realized with general computing device, they can be concentrated on single computing device, or are distributed in multiple computing devices
On the network formed, alternatively, they can be realized with the program code that computing device can perform, it is thus possible to by it
Store and performed in the storage device by computing device, and in some cases, can be to be held different from order herein
They, are either fabricated to each integrated circuit modules or will be multiple in them by the shown or described step of row respectively
Module or step are fabricated to single integrated circuit module to realize.So, the embodiment of the present invention is not restricted to any specific hard
Part and software combine.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the embodiment of the present invention can have various modifications and variations.Within the spirit and principles of the invention, made
Any modification, equivalent substitution and improvements etc., should be included in the scope of the protection.
Claims (8)
- A kind of 1. executive capability adjusting method of handpiece Water Chilling Units, it is characterised in that including：Obtain the chilled water leaving water temperature of handpiece Water Chilling Units when starting；Determine the difference between the chilled water leaving water temperature and predetermined target value；Adjustment desired value is determined according to the difference, and frequency loading speed is determined according to the adjustment desired value；The executive capability of handpiece Water Chilling Units is adjusted according to the frequency loading speed；Wherein, adjustment desired value is determined according to the difference, and frequency loading speed is determined according to the adjustment desired value, wrapped Include：In the case where the difference is more than first threshold, using first object value as the adjustment desired value, with described the First rate corresponding to one desired value is as the frequency loading speed；In the case where the difference is less than or equal to the first threshold and is more than Second Threshold, using the second desired value as described in Desired value is adjusted, the frequency loading speed is used as using the second speed corresponding with second desired value；In the case where the difference is less than or equal to the Second Threshold, using the 3rd desired value as the adjustment desired value, with Third speed corresponding with the 3rd desired value is as the frequency loading speed；Wherein, the first threshold is more than the Second Threshold, and the first rate is more than second speed, second speed Rate is more than the third speed.
- 2. according to the method for claim 1, it is characterised in that make with first rate corresponding with the first object value In the case of for the frequency loading speed, the executive capability of handpiece Water Chilling Units is adjusted according to the frequency loading speed Afterwards, methods described also includes：It is determined that the executive capability to handpiece Water Chilling Units be adjusted after chilled water leaving water temperature and the first object value between Whether difference is less than the 3rd threshold value；If less than the 3rd threshold value and continue the first scheduled duration, then using second desired value as the adjustment desired value, And the frequency loading speed is used as using the second speed corresponding with second desired value；Wherein, the Second Threshold is more than the 3rd threshold value.
- 3. according to the method for claim 1, it is characterised in that make with the second speed corresponding with second desired value In the case of for the frequency loading speed, the executive capability of handpiece Water Chilling Units is adjusted according to the frequency loading speed Afterwards, methods described also includes：It is determined that the executive capability to handpiece Water Chilling Units be adjusted after chilled water leaving water temperature and second desired value between Whether difference is less than the 4th threshold value；If less than the 4th threshold value and continue the second scheduled duration, then using the 3rd desired value as the adjustment target Value, and the frequency loading speed is used as using third speed corresponding with the 3rd desired value；Wherein, the Second Threshold is more than the 4th threshold value.
- 4. according to the method for claim 1, it is characterised in that the 3rd desired value is equal to the predetermined target value.
- 5. method according to any one of claim 1 to 4, it is characterised in that obtain the freezing of handpiece Water Chilling Units when starting Water leaving water temperature, including：The temperature sensor installed from the outlet pipe of chilled water obtains the chilled water leaving water temperature of analog signal；The chilled water leaving water temperature of the analog signal is converted to the chilled water leaving water temperature of data signal.
- A kind of 6. executive capability adjusting means of handpiece Water Chilling Units, it is characterised in that including：Acquisition module, the chilled water leaving water temperature of handpiece Water Chilling Units when starting for obtaining；Difference determining module, for determining the difference between the chilled water leaving water temperature and predetermined target value；Rate determination module, for determining adjustment desired value according to the difference, and frequency is determined according to the adjustment desired value Loading speed；Adjustment module, for the executive capability of handpiece Water Chilling Units to be adjusted according to the frequency loading speed；Wherein, the rate determination module includes：First rate determining unit, in the case of being more than first threshold in the difference, using first object value as described in Desired value is adjusted, the frequency loading speed is used as using first rate corresponding with the first object value；Second rate determination unit, for being less than or equal to the first threshold and more than the situation of Second Threshold in the difference Under, using the second desired value as the adjustment desired value, the frequency is used as using the second speed corresponding with second desired value Rate loading speed；Third speed determining unit, in the case of being less than or equal to the Second Threshold in the difference, by the 3rd desired value As the adjustment desired value, the frequency loading speed is used as using third speed corresponding with the 3rd desired value；Wherein, The first threshold is more than the Second Threshold, and the first rate is more than second speed, and second speed is more than institute State third speed.
- 7. device according to claim 6, it is characterised in that the 3rd desired value is equal to the predetermined target value.
- 8. the device according to any one of claim 6 to 7, it is characterised in that the acquisition module includes：Temperature collecting cell, the chilled water that the temperature sensor for being installed from the outlet pipe of chilled water obtains analog signal go out Coolant-temperature gage；AD conversion unit, for the chilled water leaving water temperature of the analog signal to be converted to the chilled water water outlet of data signal Temperature.
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| CN201510863023.XA CN105387570B (en) | 2015-11-30 | 2015-11-30 | Execution capacity adjusting method and device of water chilling unit |
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