CN108731323A - Load Calculation Method, system and the handpiece Water Chilling Units of handpiece Water Chilling Units - Google Patents
Load Calculation Method, system and the handpiece Water Chilling Units of handpiece Water Chilling Units Download PDFInfo
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- CN108731323A CN108731323A CN201810618826.2A CN201810618826A CN108731323A CN 108731323 A CN108731323 A CN 108731323A CN 201810618826 A CN201810618826 A CN 201810618826A CN 108731323 A CN108731323 A CN 108731323A
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- compressor
- water chilling
- chilling units
- handpiece water
- load percentage
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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
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a kind of Load Calculation Method of handpiece Water Chilling Units, system and handpiece Water Chilling Units.Wherein, the Load Calculation Method of handpiece Water Chilling Units, including：Simple load percentage is obtained according to guiding valve parameter and compressor parameter；The energy modulation correction amount of compressor is obtained according to simple load percentage；Pressure ratio correction factor is obtained according to the practical pressure ratio of compressor and standard pressure ratio；Simple load percentage is modified with energy modulation correction amount and pressure ratio correction factor, obtains the revised load percentage corresponding to compressor；When handpiece Water Chilling Units include a compressor, using revised load percentage as the final load percentage of handpiece Water Chilling Units.It is accurate that the Load Calculation Method of the handpiece Water Chilling Units of the present invention has the advantages that the load percentage of handpiece Water Chilling Units calculates, and the true load close to handpiece Water Chilling Units exports situation.
Description
Technical field
The present invention relates to a kind of art of refrigeration units more particularly to Load Calculation Method of handpiece Water Chilling Units, system and cold water
Unit.
Background technology
Handpiece Water Chilling Units answer the demand of client or itself control often to carry the currently running load percentage of unit aobvious
Show.In the related technology, using the current running current value of monitoring unit and by the specified or maximum running current value of itself and unit
Compare and obtains load percentage.It has the following problems：
When unit operation load behavior changes, load percentage adaptive change, reason is unit under certain operating modes
Will appear more than rated current the case where, be easy to cause the misunderstanding of load percentage, in addition, in unit running process voltage change
The variation of current value can be caused by changing, and cause the distortion of result of calculation.
Invention content
The present invention is directed at least solve one of the technical problems existing in the prior art.
For this purpose, an object of the present invention is to provide a kind of Load Calculation Methods of handpiece Water Chilling Units.This method has cold
The load percentage of water dispenser group calculates accurate advantage, and the true load close to handpiece Water Chilling Units exports situation.
It is another object of the present invention to propose a kind of carry calculation system of handpiece Water Chilling Units.
Another object of the present invention is to propose a kind of handpiece Water Chilling Units.
To achieve the goals above, the embodiment of the first aspect of the present invention discloses a kind of carry calculation of handpiece Water Chilling Units
Method includes the following steps：Simple load percentage is obtained according to guiding valve parameter and compressor parameter；According to the simple load
Percentage obtains the energy modulation correction amount of compressor；Pressure ratio amendment system is obtained according to the practical pressure ratio of compressor and standard pressure ratio
Number；With it is described can modulation correction amount and the pressure ratio correction factor the simple load percentage is modified, obtain pair
The revised load percentage of compressor described in Ying Yu；When the handpiece Water Chilling Units include a compressor, by the amendment
Final load percentage of the load percentage afterwards as the handpiece Water Chilling Units.
The Load Calculation Method of handpiece Water Chilling Units according to the ... of the embodiment of the present invention can effectively avoid using galvanometer merely
The problem of calculating the distortion or bad adaptability that load percentage is brought, and it is possible to the operating mode of variation, change can adjust output to have more
Good adaptability, keeps result of calculation more accurate, and the true load close to handpiece Water Chilling Units exports situation.
In some instances, further include：It is each according to corresponding to respectively when the handpiece Water Chilling Units include multiple compressors
The revised load percentage of compressor and obtain the final negative of the handpiece Water Chilling Units corresponding to the discharge capacity of each compressor
Lotus percentage.
In some instances, the guiding valve parameter includes the current aperture of guiding valve and guiding valve maximum opening, the compressor ginseng
Number includes compressor real-world operation frequency and the maximum allowable operating frequency of compressor, described according to guiding valve parameter and compressor parameter
Simple load percentage is obtained, is obtained by following formula, the formula is：
Wherein, the LR_s is simple load percentage, and the Sc_run is the current aperture of guiding valve, and the Sc_max is to slide
Valve maximum opening, the Fr_run are compressor real-world operation frequency, and the Fr_max is the maximum allowable operating frequency of compressor.
In some instances, the energy modulation correction amount is：
1-LRdis=f1 (1-LRs),
Wherein, the 1-LRdisFor energy modulation correction amount, f1 (x) is binomial or multinomial.
In some instances, the pressure ratio correction factor is：
KP=f2 (PR/PRn),
Wherein, the KPFor the pressure ratio correction factor, the PRnFor standard pressure ratio, the PR is current pressure ratio, described
F2 (x) is first order formula.
In some instances, further include：Show the final load percentage of the handpiece Water Chilling Units.
The embodiment of the second aspect of the present invention discloses a kind of carry calculation system of handpiece Water Chilling Units, including：It is simple negative
Lotus percentage calculation module, for obtaining simple load percentage according to guiding valve parameter and compressor parameter；Correction value calculates mould
Block, the energy modulation correction amount for obtaining compressor according to the simple load percentage, and according to the practical pressure of compressor
Than obtaining pressure ratio correction factor with standard pressure ratio；Load calculation module, for the energy modulation correction amount and the pressure ratio
Correction factor is modified the simple load percentage, obtains the revised load percentage corresponding to the compressor
Than, and when the handpiece Water Chilling Units include a compressor, using the revised load percentage as the handpiece Water Chilling Units
Final load percentage.
The carry calculation system of handpiece Water Chilling Units according to the ... of the embodiment of the present invention can effectively avoid using galvanometer merely
The problem of calculating the distortion or bad adaptability that load percentage is brought, and it is possible to the operating mode of variation, change can adjust output to have more
Good adaptability, keeps result of calculation more accurate, and the true load close to handpiece Water Chilling Units exports situation.
In some instances, the load calculation module is additionally operable to when the handpiece Water Chilling Units include multiple compressors, point
It is not obtained according to the revised load percentage for corresponding to each compressor and corresponding to the discharge capacity of each compressor described
The final load percentage of handpiece Water Chilling Units.
In some instances, the guiding valve parameter includes the current aperture of guiding valve and guiding valve maximum opening, the compressor ginseng
Number includes compressor real-world operation frequency and the maximum allowable operating frequency of compressor, described according to guiding valve parameter and compressor parameter
Simple load percentage is obtained, is obtained by following formula, the formula is：
Wherein, the LR_s is simple load percentage, and the Sc_run is the current aperture of guiding valve, and the Sc_max is to slide
Valve maximum opening, the Fr_run are compressor real-world operation frequency, and the Fr_max is the maximum allowable operating frequency of compressor.
In some instances, the energy modulation correction amount is：
1-LRdis=f1 (1-LRs),
Wherein, the 1-LRdisFor energy modulation correction amount, f1 (x) is binomial or multinomial.
In some instances, the pressure ratio correction factor is：
KP=f2 (PR/PRn),
Wherein, the KPFor the pressure ratio correction factor, the PRnFor standard pressure ratio, the PR is current pressure ratio, described
F2 (x) is first order formula.
In some instances, further include：Display module, the final load percentage for showing the handpiece Water Chilling Units.
The embodiment of the third aspect of the present invention discloses a kind of handpiece Water Chilling Units, including：According to above-mentioned second aspect
The carry calculation system of handpiece Water Chilling Units described in embodiment.The handpiece Water Chilling Units can effectively avoid negative using Current calculation merely
The problem of distortion that lotus percentage is brought or bad adaptability, and it is possible to the operating mode of variation, change can adjust output with preferably
Adaptability keeps result of calculation more accurate, and the true load close to handpiece Water Chilling Units exports situation.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obviously, or practice through the invention is recognized.
Description of the drawings
The above-mentioned and/or additional aspect and advantage combination following accompanying drawings of the present invention in the description of embodiment to that will become
Obviously and it is readily appreciated that, wherein：
Fig. 1 is the flow chart of the Load Calculation Method of handpiece Water Chilling Units according to an embodiment of the invention.
Fig. 2 is the structure diagram of the carry calculation system of handpiece Water Chilling Units according to an embodiment of the invention.
Reference numeral：
The carry calculation system 200 of handpiece Water Chilling Units, simple load percentage computing module 210, correction value computing module
220, load calculation module 230.
Specific implementation mode
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and is only used for explaining the present invention, and is not considered as limiting the invention.
Load Calculation Method, system and the cooling-water machine of handpiece Water Chilling Units according to the ... of the embodiment of the present invention are described below in conjunction with the accompanying drawings
Group.
Fig. 1 is the flow chart of the Load Calculation Method of handpiece Water Chilling Units according to an embodiment of the invention.As shown in Figure 1,
The Load Calculation Method of handpiece Water Chilling Units according to an embodiment of the invention, includes the following steps：
S101：Simple load percentage is obtained according to guiding valve parameter and compressor parameter.
Specifically, guiding valve parameter includes but not limited to：The current aperture of guiding valve and guiding valve maximum opening；Compressor parameter includes
But it is not limited to：Compressor real-world operation frequency and the maximum allowable operating frequency of compressor.
Simple load percentage is obtained according to guiding valve parameter and compressor parameter, can be obtained by following formula, the formula
For：
Wherein, LR_s is simple load percentage；Sc_run is the current aperture of guiding valve, i.e.,：Indicate the current guiding valve fortune of unit
Degree of turning on (such as 100% aperture, 75% aperture, 50% aperture)；Sc_max is guiding valve maximum opening, i.e.,：It indicates to slide
Valve is controlled in maximum opening i.e. 100%；Fr_run is compressor real-world operation frequency, and Fr_max is the maximum allowable operating of compressor
Frequency, i.e.,：Indicate that the maximum allowable operating frequency of current compressor setting, the constant speed compressor value are 50Hz.
Since simple load percentage is used to as final load percentage to be inaccurate, such as：With compression
Unit frequency reduction/guiding valve reduces, and the load percentage deviation of calculating increases.With the increase of operating condition pressure ratio, calculating is born
Lotus percent deviation increases.Compared with actual handpiece Water Chilling Units export situation, the result of calculation and reality of simple load percentage
As a result it has differences.Therefore, in an embodiment of the present invention, need to be added in subsequent step related with compressor body characteristic
The amendment of energy modulation is (i.e.：Energy modulation correction amount) and the related pressure ratio amendment of handpiece Water Chilling Units operating condition variation is (i.e.：Pressure ratio is repaiied
Positive coefficient).
S102：The energy modulation correction amount of compressor is obtained according to simple load percentage.
Wherein, energy modulation correction amount is：
1-LRdis=f1 (1-LRs),
Wherein, 1-LRdisFor energy modulation correction amount, f1 (x) is binomial or multinomial.
Specifically, 1-LRdis=f1 (1-LRs) obtained by the characteristic curve fitting of compressor actual measurement, it is adopted in the Fitting Calculation
Variable is that the unit obtained under a certain determining operating mode adjusts unit capacity can change caused by regulating mechanism merely, usually may be used
Can ensure certain precision using binomial, such as：F1 (x)=ax2+ bx+c, wherein a, b, c are constant.
It is understood that the multinomial of higher fitting precision, such as ten formulas can also be used.
S103：Pressure ratio correction factor is obtained according to the practical pressure ratio of compressor and standard pressure ratio.
Specifically, can modulationization it is modified on the basis of, using determining operating mode pressure ratio as standard pressure ratio (such as：Cold water
The ratio of the condensing pressure of unit and the ratio of evaporating pressure or Compressor Discharge Pressure and back pressure).Therefore, pressure ratio is repaiied
Positive coefficient is calculated as：
KP=f2 (PR/PRn),
Wherein, KPFor pressure ratio correction factor, PRnFor standard pressure ratio, PR is current pressure ratio, and f2 (x) is first order formula.
For different frequency ranges, different K can be usually setPCalculation formula, the calculation formula are surely adjusted by system
Unit capacity fitting under variable working condition obtains.First order formula usually may be used, it is ensured that certain precision, such as f2 (x)=ax+
B, wherein a, b are constant.
It is understood that the multinomial or other fit equation patterns of higher fitting precision can also be used.
S104：Simple load percentage is modified with energy modulation correction amount and pressure ratio correction factor, is corresponded to
In the revised load percentage of compressor.
Such as：Pass through formula：
LR=1-KP(1-LRdis),
Revised load percentage LR is calculated.
S105：When handpiece Water Chilling Units include a compressor, most using revised load percentage as handpiece Water Chilling Units
Final load percentage.I.e.：The final load percentage of handpiece Water Chilling Units is LR.
In addition, further including：When handpiece Water Chilling Units include multiple compressors, respectively according to the amendment for corresponding to each compressor
Rear load percentage and obtain the final load percentage of the handpiece Water Chilling Units corresponding to the discharge capacity of each compressor.
By taking two compressors (such as compressor A and compressor B) as an example, then it can pass through following formula：
The final load percentage of handpiece Water Chilling Units is calculated.Wherein, LRaIt indicates corresponding to the revised of compressor A
Load percentage, LRbIndicate the revised load percentage corresponding to compressor B.XaWith XbRespectively correspond to compressor A and
The discharge capacity of corresponding compressor B.
It is understood that because the inspiratory capacity of compressor changes less with operating mode, therefore, XaWith XbCan approximation be considered as it is fixed
Value.
It is 9.4m3/h as a specific example, such as discharge capacity of compressor A, the discharge capacity of compressor B is 14m3/h, A, B
Compressor parallel use is in the same coolant circulating system, LR that compressor A is calculatedaIt is 38.41%, compressor B meters
Calculation obtains LRbIt is 56.37%.
Then the final load percentage of handpiece Water Chilling Units is：
The load percentage result calculated above obtains resultant error with actual test and can narrow down within 5%.
Finally, the final load percentage of handpiece Water Chilling Units is shown, such as：The final load percentage obtained will be calculated to show
Show on the control panel of handpiece Water Chilling Units.
In the above description, the definition of load percentage is：Under the conditions of indicating current operating condition, handpiece Water Chilling Units are currently transported
The ratio of row energy adjusted position and the refrigerating capacity of maximum energy adjusted position, characterization is the energy that can reach under handpiece Water Chilling Units current working
Power exports the ratio of situation and maximum capacity output.The load percentage numerical value is between 0~1.
The Load Calculation Method of handpiece Water Chilling Units according to the ... of the embodiment of the present invention can effectively avoid using galvanometer merely
The problem of calculating the distortion or bad adaptability that load percentage is brought, and it is possible to the operating mode of variation, change can adjust output to have more
Good adaptability, keeps result of calculation more accurate, and the true load close to handpiece Water Chilling Units exports situation.
Fig. 2 is the structure diagram of the carry calculation system of handpiece Water Chilling Units according to an embodiment of the invention.Such as Fig. 2 institutes
Show, the carry calculation system 200 of handpiece Water Chilling Units according to an embodiment of the invention, including：Simple load percentage calculates mould
Block 210, correction value computing module 220 and load calculation module 230.
Wherein, simple load percentage computing module 210 according to guiding valve parameter and compressor parameter for simply being born
Lotus percentage.Correction value computing module 220 is used to obtain the energy modulation amendment of compressor according to the simple load percentage
Amount, and pressure ratio correction factor is obtained according to the practical pressure ratio and standard pressure ratio of compressor.Load calculation module 230 is used for described
Energy modulation correction amount and the pressure ratio correction factor are modified the simple load percentage, obtain corresponding to the pressure
The revised load percentage of contracting machine, and when the handpiece Water Chilling Units include a compressor, by the revised load
Final load percentage of the percentage as the handpiece Water Chilling Units.
In one embodiment of the invention, the load calculation module 230 is additionally operable to when the handpiece Water Chilling Units include more
When a compressor, respectively according to the revised load percentage for corresponding to each compressor and corresponding to each compressor
Discharge capacity obtains the final load percentage of the handpiece Water Chilling Units.
In one embodiment of the invention, the guiding valve parameter includes the current aperture of guiding valve and guiding valve maximum opening, institute
It includes compressor real-world operation frequency and the maximum allowable operating frequency of compressor to state compressor parameter, it is described according to guiding valve parameter and
Compressor parameter obtains simple load percentage, is obtained by following formula, and the formula is：
Wherein, the LR_s is simple load percentage, and the Sc_run is the current aperture of guiding valve, and the Sc_max is to slide
Valve maximum opening, the Fr_run are compressor real-world operation frequency, and the Fr_max is the maximum allowable operating frequency of compressor.
In one embodiment of the invention, the energy modulation correction amount is：
1-LRdis=f1 (1-LRs),
Wherein, the 1-LRdisFor energy modulation correction amount, f1 (x) is binomial or multinomial.
In one embodiment of the invention, the pressure ratio correction factor is：
KP=f2 (PR/PRn),
Wherein, the KPFor the pressure ratio correction factor, the PRnFor standard pressure ratio, the PR is current pressure ratio, described
F2 (x) is first order formula.
In one embodiment of the invention, further include：Display module (is not shown) in Fig. 2, described cold for showing
The final load percentage of water dispenser group.
The carry calculation system of handpiece Water Chilling Units according to the ... of the embodiment of the present invention can effectively avoid using galvanometer merely
The problem of calculating the distortion or bad adaptability that load percentage is brought, and it is possible to the operating mode of variation, change can adjust output to have more
Good adaptability, keeps result of calculation more accurate, and the true load close to handpiece Water Chilling Units exports situation.
It should be noted that the specific implementation of the carry calculation system of the handpiece Water Chilling Units of the embodiment of the present invention is in this hair
The specific implementation of the Load Calculation Method of the handpiece Water Chilling Units of bright embodiment is similar, specifically refers to the description of method part,
In order to reduce redundancy, it is not repeated herein.
Further, embodiment of the invention discloses that a kind of handpiece Water Chilling Units, including：According to any one above-mentioned embodiment
The carry calculation system of the handpiece Water Chilling Units.The handpiece Water Chilling Units can effectively avoid using Current calculation load percentage merely
The problem of than the distortion brought or bad adaptability, and it is possible to the operating mode of variation, change can adjust output to have and preferably adapt to
Property, keep result of calculation more accurate, the true load close to handpiece Water Chilling Units exports situation.
In addition, handpiece Water Chilling Units according to the ... of the embodiment of the present invention other compositions and effect for this field ordinary skill
All it is known for personnel, is not repeated herein.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
Centainly refer to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any
One or more embodiments or example in can be combined in any suitable manner.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Not
In the case of being detached from the principle of the present invention and objective a variety of change, modification, replacement and modification can be carried out to these embodiments, this
The range of invention is limited by claim and its equivalent.
Claims (13)
1. a kind of Load Calculation Method of handpiece Water Chilling Units, which is characterized in that include the following steps：
Simple load percentage is obtained according to guiding valve parameter and compressor parameter；
The energy modulation correction amount of compressor is obtained according to the simple load percentage；
Pressure ratio correction factor is obtained according to the practical pressure ratio of compressor and standard pressure ratio；
With it is described can modulation correction amount and the pressure ratio correction factor the simple load percentage is modified, obtain pair
The revised load percentage of compressor described in Ying Yu；
When the handpiece Water Chilling Units include a compressor, using the revised load percentage as the handpiece Water Chilling Units
Final load percentage.
2. the Load Calculation Method of handpiece Water Chilling Units according to claim 1, which is characterized in that further include：
When the handpiece Water Chilling Units include multiple compressors, respectively according to the revised load percentage for corresponding to each compressor
The final load percentage of the handpiece Water Chilling Units is obtained than and corresponding to the discharge capacity of each compressor.
3. the Load Calculation Method of handpiece Water Chilling Units according to claim 1, which is characterized in that the guiding valve parameter includes sliding
The current aperture of valve and guiding valve maximum opening, the compressor parameter include that compressor real-world operation frequency and compressor are maximum allowable
Operating frequency, it is described that simple load percentage is obtained according to guiding valve parameter and compressor parameter, it is obtained by following formula, it is described
Formula is：
Wherein, the LR_s be simple load percentage, the Sc_run be the current aperture of guiding valve, the Sc_max be guiding valve most
Big aperture, the Fr_run are compressor real-world operation frequency, and the Fr_max is the maximum allowable operating frequency of compressor.
4. the Load Calculation Method of handpiece Water Chilling Units according to claim 1, which is characterized in that the energy modulation correction amount
For：
1-LRdis=f1 (1-LRs),
Wherein, the 1-LRdisFor energy modulation correction amount, f1 (x) is binomial or multinomial.
5. the Load Calculation Method of handpiece Water Chilling Units according to claim 1, which is characterized in that the pressure ratio correction factor
For：
KP=f2 (PR/PRn),
Wherein, the KPFor the pressure ratio correction factor, the PRnFor standard pressure ratio, the PR is current pressure ratio, the f2 (x)
For first order formula.
6. the Load Calculation Method of handpiece Water Chilling Units according to claim 1, which is characterized in that further include：It shows described cold
The final load percentage of water dispenser group.
7. a kind of carry calculation system of handpiece Water Chilling Units, which is characterized in that including：
Simple load percentage computing module, for obtaining simple load percentage according to guiding valve parameter and compressor parameter；
Correction value computing module, the energy modulation correction amount for obtaining compressor according to the simple load percentage, and root
Pressure ratio correction factor is obtained according to the practical pressure ratio and standard pressure ratio of compressor；
Load calculation module is used for the energy modulation correction amount and the pressure ratio correction factor to the simple load percentage
Than being modified, the revised load percentage corresponding to the compressor is obtained, and when the handpiece Water Chilling Units include one
When compressor, using the revised load percentage as the final load percentage of the handpiece Water Chilling Units.
8. the carry calculation system of handpiece Water Chilling Units according to claim 7, which is characterized in that the load calculation module is also
For when the handpiece Water Chilling Units include multiple compressors, basis to correspond to the revised load percentage of each compressor respectively
The final load percentage of the handpiece Water Chilling Units is obtained than and corresponding to the discharge capacity of each compressor.
9. the carry calculation system of handpiece Water Chilling Units according to claim 7, which is characterized in that the guiding valve parameter includes sliding
The current aperture of valve and guiding valve maximum opening, the compressor parameter include that compressor real-world operation frequency and compressor are maximum allowable
Operating frequency, it is described that simple load percentage is obtained according to guiding valve parameter and compressor parameter, it is obtained by following formula, it is described
Formula is：
Wherein, the LR_s be simple load percentage, the Sc_run be the current aperture of guiding valve, the Sc_max be guiding valve most
Big aperture, the Fr_run are compressor real-world operation frequency, and the Fr_max is the maximum allowable operating frequency of compressor.
10. the carry calculation system of handpiece Water Chilling Units according to claim 7, which is characterized in that the energy modulation amendment
Amount is：
1-LRdis=f1 (1-LRs),
Wherein, the 1-LRdisFor energy modulation correction amount, f1 (x) is binomial or multinomial.
11. the carry calculation system of handpiece Water Chilling Units according to claim 7, which is characterized in that the pressure ratio correction factor
For：
KP=f2 (PR/PRn),
Wherein, the KPFor the pressure ratio correction factor, the PRnFor standard pressure ratio, the PR is current pressure ratio, the f2 (x)
For first order formula.
12. the carry calculation system of handpiece Water Chilling Units according to claim 7, which is characterized in that further include：Display module,
Final load percentage for showing the handpiece Water Chilling Units.
13. a kind of handpiece Water Chilling Units, which is characterized in that including：According to the negative of claim 7-12 any one of them handpiece Water Chilling Units
Lotus computing system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810618826.2A CN108731323B (en) | 2018-06-15 | 2018-06-15 | Load calculation method and system of water chilling unit and water chilling unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810618826.2A CN108731323B (en) | 2018-06-15 | 2018-06-15 | Load calculation method and system of water chilling unit and water chilling unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108731323A true CN108731323A (en) | 2018-11-02 |
| CN108731323B CN108731323B (en) | 2020-06-30 |
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ID=63929966
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810618826.2A Active CN108731323B (en) | 2018-06-15 | 2018-06-15 | Load calculation method and system of water chilling unit and water chilling unit |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3738116A (en) * | 1971-10-01 | 1973-06-12 | Dunham Bush Inc | Compressor unloader indicator and refrigeration system controlled thereby |
| CN103573632A (en) * | 2012-08-01 | 2014-02-12 | 江森自控空调冷冻设备(无锡)有限公司 | Slide valve position determination method for screw unit compressor |
| CN104949282A (en) * | 2015-06-30 | 2015-09-30 | 重庆美的通用制冷设备有限公司 | Method and device for judging position of sliding block of compressor |
| CN105649988A (en) * | 2014-11-13 | 2016-06-08 | 同方人工环境有限公司 | Determination method for load percentage of stepless screw compressor |
| CN107476981A (en) * | 2017-10-16 | 2017-12-15 | 珠海格力电器股份有限公司 | Helical-lobe compressor energy level adjusting method |
-
2018
- 2018-06-15 CN CN201810618826.2A patent/CN108731323B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3738116A (en) * | 1971-10-01 | 1973-06-12 | Dunham Bush Inc | Compressor unloader indicator and refrigeration system controlled thereby |
| CN103573632A (en) * | 2012-08-01 | 2014-02-12 | 江森自控空调冷冻设备(无锡)有限公司 | Slide valve position determination method for screw unit compressor |
| CN105649988A (en) * | 2014-11-13 | 2016-06-08 | 同方人工环境有限公司 | Determination method for load percentage of stepless screw compressor |
| CN104949282A (en) * | 2015-06-30 | 2015-09-30 | 重庆美的通用制冷设备有限公司 | Method and device for judging position of sliding block of compressor |
| CN107476981A (en) * | 2017-10-16 | 2017-12-15 | 珠海格力电器股份有限公司 | Helical-lobe compressor energy level adjusting method |
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| Publication number | Publication date |
|---|---|
| CN108731323B (en) | 2020-06-30 |
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Effective date of registration: 20230721 Address after: 401336 No. 15 Rose Road, Nanan District, Chongqing Patentee after: CHONGQING MIDEA GENERAL REFRIGERATION EQUIPMENT Co.,Ltd. Patentee after: MIDEA GROUP Co.,Ltd. Patentee after: Meitong Energy Technology (Chongqing) Co.,Ltd. Address before: 401336 No. 15 Rose Road, Nanan District, Chongqing Patentee before: CHONGQING MIDEA GENERAL REFRIGERATION EQUIPMENT Co.,Ltd. Patentee before: MIDEA GROUP Co.,Ltd. |