CN106196444B - The detection method and system of air conditioner evaporating temperature - Google Patents
The detection method and system of air conditioner evaporating temperature Download PDFInfo
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- CN106196444B CN106196444B CN201610555613.0A CN201610555613A CN106196444B CN 106196444 B CN106196444 B CN 106196444B CN 201610555613 A CN201610555613 A CN 201610555613A CN 106196444 B CN106196444 B CN 106196444B
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- frequency separation
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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
- F24F11/62—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
- F24F11/30—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
- F24F2110/00—Control inputs relating to air properties
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
Abstract
The invention discloses a kind of detection methods of air conditioner evaporating temperature, when air conditioner is run in cooling mode, determine the frequency separation in the air conditioner where the current operation frequency of compressor；Obtain the corresponding temperature compensation value of the frequency separation；The evaporating temperature of the air conditioner is calculated according to the temperature compensation value of the temperature that the temperature sensor being arranged on the evaporator circuit of the air conditioner measures under the current operation frequency, and acquisition.The invention also discloses a kind of detection systems of air conditioner evaporating temperature.The present invention improves the accuracy of air conditioner evaporating temperature detection.
Description
Technical field
The present invention relates to air-conditioner field more particularly to a kind of detection methods and system of air conditioner evaporating temperature.
Background technique
Currently, air-conditioning, which is generallyd use, is arranged temperature sensor in evaporator primary Ioops, for detecting the steaming of refrigeration system
Temperature is sent out, and judges whether system will enter or exit anti-freeze in cooling mode, or judge system in a heating mode
Whether high temperature-proof protection is opened, and typical temperature sensor is placed on the position of circuit outlet (referring to Fig.1, wherein Q indicates temperature
Spend sensor).
And for the convertible frequency air-conditioner using capillary-compensated, to improve air-conditioning APF (Annual Performance
Factor, annual energy consumption efficiency) value, usually with low frequency refrigeration test point EER (Energy Efficiency Ratio,
Energy Efficiency Ratio) as the foundation for determining capillary dimension, this has been resulted under and high frequency situations relatively high in traffic requirement value, due to
Capillary is partially long, throttles excessive, causes to evaporate measurement of discharge deficiency, the corresponding evaporation circuit inlet and outlet temperature difference increases with frequency and added
Greatly, the temperature departure system actual evaporation temperature for causing sensor to detect, if the temperature that system is arrived using sensor measurement
As actual evaporation temperature, just will affect using evaporating temperature as the accuracy of the relevant control algorithm of control parameter.
Summary of the invention
It is a primary object of the present invention to propose the detection method and system of a kind of air conditioner evaporating temperature, it is intended to solve to pass
The detection mode of the air conditioner evaporating temperature of system, not accurate enough technical problem.
To achieve the above object, the detection method of a kind of air conditioner evaporating temperature provided by the invention, the air conditioner steam
Hair temperature detection method include:
When air conditioner is run in cooling mode, determine in the air conditioner where the current operation frequency of compressor
Frequency separation；
Obtain the corresponding temperature compensation value of the frequency separation；
It is measured under the current operation frequency according to the temperature sensor being arranged on the evaporator circuit of the air conditioner
The temperature arrived, and the temperature compensation value obtained calculate the evaporating temperature of the air conditioner.
Preferably, described the step of obtaining the frequency separation corresponding temperature compensation value, includes:
According to the mapping relations of preset frequency separation and preset temperature value, it is corresponding to obtain the determining frequency separation
Preset temperature value；
The preset temperature value that will acquire is as the corresponding temperature compensation value of the frequency separation.
Preferably, the frequency separation includes first frequency section f < F1, second frequency section F1≤f < F2 and third frequency
Rate section f >=F2；
Described the step of obtaining the frequency separation corresponding temperature compensation value further include:
When the frequency separation is first frequency section, the corresponding temperature compensation value △ in the first frequency section is obtained
T=A；
When the frequency separation is second frequency section, the corresponding temperature compensation value △ in the second frequency section is obtained
T=[(f-F1)/(F2-F1) × (B-A)+A]；
When the frequency separation is third frequency separation, the corresponding temperature compensation value △ of the third frequency separation is obtained
T=[(f-F2)/(X-F2) × (C-B)+B], wherein X indicates the rated frequency of compressor, and A, B and C respectively indicate F1, F2 and X
Corresponding pre-set constant value；
The temperature sensor being arranged on the evaporator circuit according to the air conditioner is under the current operation frequency
The temperature measured, and the temperature compensation value the step of calculating the evaporating temperature of the air conditioner obtained include:
The temperature compensation value that the temperature measured under current operation frequency is subtracted to acquisition obtains the evaporation of the air conditioner
Temperature.
Preferably, the calculation of pre-set constant value A, B and C includes:
Obtain each pressure value that preset pressure gauge is detected when the running frequency of compressor is F1, F2 and X；
Obtain the corresponding temperature value of each pressure value；
Obtain the temperature that the temperature sensor measures under current operation frequency；
Each temperature value of acquisition and the difference of the temperature measured are calculated separately, and each by what is be calculated
A difference is as pre-set constant value A, B and C.
Preferably, described the step of obtaining each pressure value corresponding temperature value, includes:
Each pressure value is converted into temperature value by preset conversion application, and obtains each temperature after conversion
Value；
Alternatively, obtaining the corresponding temperature value of each pressure value in the table of comparisons of preset pressure value and temperature value.
In addition, to achieve the above object, the present invention also proposes a kind of detection system of air conditioner evaporating temperature, the air-conditioning
The detection system of device evaporating temperature includes:
Determining module, for when air conditioner is run in cooling mode, determining the current of compressor in the air conditioner
Frequency separation where running frequency；
Module is obtained, for obtaining the corresponding temperature compensation value of the frequency separation；
Computing module, the temperature sensor being arranged on the evaporator circuit according to the air conditioner is in the current fortune
The temperature measured under line frequency, and the temperature compensation value obtained calculate the evaporating temperature of the air conditioner.
Preferably, the acquisition module includes:
First acquisition unit obtains determining for the mapping relations according to preset frequency separation and preset temperature value
The corresponding preset temperature value of the frequency separation；
Processing unit, the preset temperature value for will acquire is as the corresponding temperature compensation value of the frequency separation.
Preferably, the frequency separation includes first frequency section f < F1, second frequency section F1≤f < F2 and third frequency
Rate section f >=F2；
The acquisition module is also used to obtain the first frequency area when the frequency separation is first frequency section
Between corresponding temperature compensation value △ T=A；
When the frequency separation is second frequency section, the corresponding temperature compensation value △ in the second frequency section is obtained
T=[(f-F1)/(F2-F1) × (B-A)+A]；
When the frequency separation is third frequency separation, the corresponding temperature compensation value △ of the third frequency separation is obtained
T=[(f-F2)/(X-F2) × (C-B)+B], wherein X indicates the rated frequency of compressor, and A, B and C respectively indicate F1, F2 and X
Corresponding pre-set constant value；
The computing module, the temperature for being also used to measure under current operation frequency subtract the temperature compensation value of acquisition,
Obtain the evaporating temperature of the air conditioner.
Preferably, the acquisition module includes:
Second acquisition unit is detected for obtaining preset pressure gauge when the running frequency of compressor is F1, F2 and X
Each pressure value；
The second acquisition unit is also used to obtain the corresponding temperature value of each pressure value；
The second acquisition unit is also used to obtain the temperature that the temperature sensor measures under current operation frequency
Degree；
Computing unit, for calculating separately each temperature value of acquisition and the difference of the temperature measured, and
Using each difference being calculated as pre-set constant value A, B and C.
Preferably, the second acquisition unit is also used to convert each pressure value by preset conversion application
For temperature value, and obtain each temperature value after conversion；
Alternatively, obtaining the corresponding temperature value of each pressure value in the table of comparisons of preset pressure value and temperature value.
The detection method and system of air conditioner evaporating temperature proposed by the present invention, when air conditioner is run in cooling mode
When, it first determines the frequency separation in the air conditioner where the current operation frequency of compressor, then obtains the frequency separation
Corresponding temperature compensation value, finally according to the temperature sensor being arranged on the evaporator circuit of the air conditioner in the current fortune
The temperature measured under line frequency, and the temperature compensation value obtained calculate the evaporating temperature of the air conditioner, it is therefore prevented that temperature
The temperature departure system actual evaporation temperature that sensor detects directly influences the temperature measured as evaporating temperature
The accuracy of actual evaporation temperature, the present invention obtain corresponding temperature compensation value in different running frequency sections and calculate evaporation temperature
Degree improves the accuracy of evaporating temperature detection.
Detailed description of the invention
Fig. 1 is the schematic diagram of the present invention in the loop by temperature sensor placement；
Fig. 2 is the flow diagram of the detection method preferred embodiment of the air condition of that present invention evaporating temperature；
Fig. 3 is the functional block diagram of the detection system preferred embodiment of the air condition of that present invention evaporating temperature.
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
The present invention provides a kind of detection method of air conditioner evaporating temperature.
It is the flow diagram of the detection method preferred embodiment of the air condition of that present invention evaporating temperature referring to Fig. 2, Fig. 2.
In the present embodiment, the detection method of the air conditioner evaporating temperature includes:
Step S10 determines the current operation frequency of compressor in the air conditioner when air conditioner is run in cooling mode
Frequency separation where rate；
In the present embodiment, when the outdoor controller of air conditioner detects that air-conditioning is run with refrigerating state, steaming can be passed through
The temperature of the temperature sensor detection evaporator on device circuit is sent out, the temperature hereinafter measured is indicated with Te.Then, it is determined that institute
The current operation frequency of compressor in air conditioner is stated, the current operation frequency of compressor is indicated with f, then determines the current operation
Frequency separation where frequency f.In the present embodiment, the number of the frequency separation can be set as the case may be.
In the present embodiment, the air conditioner is preferably the convertible frequency air-conditioner for using capillary-compensated.
Step S20 obtains the corresponding temperature compensation value of the frequency separation；
In the present embodiment, the embodiment of the step S20 includes:
1) mode one, the step S20 include:
According to the mapping relations of preset frequency separation and preset temperature value, it is corresponding to obtain the determining frequency separation
Preset temperature value；
The preset temperature value that will acquire is as the corresponding temperature compensation value of the frequency separation.
In the present embodiment, the mapping relations of each frequency separation and preset temperature value, the preset temperature are established in advance
Value can be the temperature value that user obtains according to experimental result in advance, for example, frequency separation of the invention includes three frequency zones
Between, then three preset temperature values can be set according to experimental result.The subsequent frequency separation where determining current operation frequency
Later, it is corresponding pre- that determining frequency separation can be obtained according to the mapping relations of preset frequency separation and preset temperature value
If temperature value, and the preset temperature value that will acquire is as the corresponding temperature compensation value of the frequency separation.
2) mode two, further, in order to improve the accuracy that the corresponding temperature compensation value of frequency separation obtains, the frequency
The corresponding temperature compensation value in rate section is preferably obtained according to the corresponding calculation formula of frequency separation, includes the in the frequency separation
When one frequency separation f<F1, second frequency section F1≤f<F2 and third frequency separation f>=F2, each frequency separation and temperature are mended
The mapping relations for repaying value are as follows:
When the frequency separation is first frequency section, the corresponding temperature compensation value △ T=in the first frequency section
A；
When the frequency separation is second frequency section, the corresponding temperature compensation value △ in the second frequency section is obtained
T=[(f-F1)/(F2-F1) × (B-A)+A]；
When the frequency separation is third frequency separation, the corresponding temperature compensation value △ of the third frequency separation is obtained
T=[(f-F2)/(X-F2) × (C-B)+B], wherein X indicates the rated frequency of compressor, and A, B and C respectively indicate F1, F2 and X
Corresponding pre-set constant value；
That is, after determining the frequency separation where the current operation frequency of compressor, it can be according to determining
Frequency separation obtains corresponding temperature compensation value.
After obtaining the corresponding temperature compensation value of each frequency separation, on the evaporator circuit according to the air conditioner
The temperature that the temperature sensor of setting measures under the current operation frequency, and described in the temperature compensation value calculating of acquisition
The step of evaporating temperature of air conditioner includes:
The temperature compensation value that the temperature measured under current operation frequency is subtracted to acquisition obtains the evaporation of the air conditioner
Temperature.
That is, the corresponding evaporation in the first frequency section is warm when the frequency separation is first frequency section
Spend Tem=Te-A；
When the frequency separation is second frequency section, the corresponding evaporating temperature Tem=Te-in the second frequency section
[(f-F1)/(F2-F1)×(B-A)+A]；
When the frequency separation is third frequency separation, the corresponding evaporating temperature Tem=Te-of the third frequency separation
[(f-F2)/(X-F2) × (C-B)+B], wherein Tem indicates evaporating temperature, and Te indicates the temperature measured.
In the present embodiment, by a large amount of test data and analysis as a result, the value for obtaining the F1 is preferably 30Hz, F2's
Value is preferably 60Hz, therefore, when outdoor controller detects that the current operation frequency of compressor is f < 30Hz, the meter of evaporating temperature
Calculating formula is just Tem=Te-A.When outdoor controller detects that the current operation frequency of compressor is 30Hz≤f < 60Hz,
The calculation formula of evaporating temperature is just Tem=Te-[(f-30)/(60-30) × (B-A)+A].When outdoor controller detects pressure
The current operation frequency of contracting machine be f >=60Hz, the calculation formula of evaporating temperature be just Tem=Te-[(f-60)/(80-60) ×
(C-B)+B], it will be understood that rated frequency is set as 80Hz at this time, and in the present embodiment, the setting of rated frequency is as the case may be
It is configured, herein without limitation.
It is worth noting that, the calculation of pre-set constant value A, B and C in the present embodiment include:
Obtain each pressure value that preset pressure gauge is detected when the running frequency of compressor is F1, F2 and X；
Obtain the corresponding temperature value of each pressure value；
Obtain the temperature that the temperature sensor measures under current operation frequency；
Each temperature value of acquisition and the difference of the temperature measured are calculated separately, and each by what is be calculated
A difference is as pre-set constant value A, B and C.
In the present embodiment, when the current operation frequency of compressor is located at different frequency separations, the frequency zones are obtained
Between corresponding calculation formula, then determine pre-set constant value required for the calculation formula, for example, compressor current operation frequency
Frequency separation where rate is F1≤f < F2, and calculation formula is Tem=Te-[(f-F1)/(F2-F1) × (B-A)+A] at this time, that
, pre-set constant value is exactly A and B, and specifically, the calculation of pre-set constant value A includes: firstly, obtaining preset pressure gauge
The pressure value detected when the running frequency of compressor is F1, then obtains the corresponding temperature value of the pressure value, then obtains
The temperature that the temperature sensor on evaporator circuit measures under the current operation frequency, finally calculates the temperature
The difference of value and the temperature measured, and using the difference being calculated as pre-set constant value A, it is described in the present embodiment
The difference of the temperature value Yu the temperature measured is calculated, the temperature measured is preferably subtracted into the temperature value,
To obtain pre-set constant value.The calculation of the value of pre-set constant value B is consistent, and details are not described herein again.
In the present embodiment, in order to improve the flexibility that the corresponding temperature value of pressure value obtains, the acquisition is each described
The step of pressure value corresponding temperature value includes:
Each pressure value is converted into temperature value by preset conversion application, and obtains each temperature after conversion
Value；
Alternatively, obtaining the corresponding temperature value of each pressure value in the table of comparisons of preset pressure value and temperature value.
That is, can both be applied by preset conversion by each pressure value after detecting pressure value
Temperature value is converted to, it can also be by tabling look-up to obtain the corresponding temperature value of pressure value.In the present embodiment, the conversion application is preferred
For refrigerant status inquiry application, pressure value is input in the conversion application by air conditioner, the conversion application can will described in
Pressure value is converted to temperature value, the final temperature value obtained after conversion.Either, pressure value and temperature have been previously stored in system
The table of comparisons of value obtains the corresponding temperature value of pressure value then from the table of comparisons of storage.It is of course also possible to first judge system
In whether prestore the table of comparisons of pressure value and temperature value, if so, then obtaining the corresponding temperature of pressure value from the table of comparisons prestored
The pressure value is converted to temperature value by conversion application, and by the temperature value after conversion and be somebody's turn to do if not having by angle value
Pressure value associated storage, the subsequent numerical value that storage can be used directly.Wherein, the table of comparisons of pressure value and temperature value such as following table institute
Show, it is notable that following table is only a part of the table of comparisons.
| Temperature(℃) | Pressure(MPa) |
| -4 | 0.43628 |
| -3 | 0.45113 |
| -2 | 0.46636 |
| -1 | 0.48198 |
| 0 | 0.49799 |
| 1 | 0.51439 |
| 2 | 0.5312 |
| 3 | 0.54842 |
| 4 | 0.56605 |
To be best understood from the present embodiment, citing application scenarios are as follows:
The first external inspecting tooling on air-conditioner outdoor machine electric control plate, to monitor Te and f and other operating parameters；Then it is steaming
Send out the external pressure gauge of export pipeline of device refrigerating state flow direction, the evaporating pressure under current operation frequency to detect the compressor
P0, that is, pressure value；Then air conditioner is placed in enthalpy difference chamber, and is arranged and runs at different frequencies, to obtain each different preset
Constant value, specifically:
1, set indoor operating condition 27/19, outdoor operating condition 35/24, air-conditioning in a chiller mode, high wind file, 16 DEG C of set temperature,
The current operation frequency for setting compressor is run as 30Hz, is recorded the temperature Te measured and pressure value P 0, is utilized refrigerant state
P0 is converted to T0 by query software, or according to pressure value temperature value corresponding with the table of comparisons of temperature value acquisition pressure value P 0
T0 finally calculates the value of A according to A=Te-T0；
2, set indoor operating condition 27/19, outdoor operating condition 35/24, air-conditioning in a chiller mode, high wind file, 16 DEG C of set temperature,
Setting compressor currently operates to frequency 60Hz operation, records Te and P0, is converted to P0 using refrigerant status inquiry software
T0, or according to pressure value temperature value T0 corresponding with the table of comparisons of temperature value acquisition pressure value P 0, finally according to B=Te-
The value of T0 calculating B；
3, set indoor operating condition 27/19, outdoor operating condition 35/24, air-conditioning in a chiller mode, high wind file, 16 DEG C of set temperature,
Setting compressor currently operates to frequency 80Hz operation, records Te and P0, is converted to P0 using refrigerant status inquiry software
T0, or according to pressure value temperature value T0 corresponding with the table of comparisons of temperature value acquisition pressure value P 0, finally according to C=Te-
The value of T0 calculating C.
By above-mentioned calculation, pre-set constant value A, B, C can be obtained.
Step S30, according to the temperature sensor being arranged on the evaporator circuit of the air conditioner in the current operation frequency
The temperature measured under rate, and the temperature compensation value obtained calculate the evaporating temperature of the air conditioner.
In the present embodiment, in determining the air conditioner compressor current operation frequency, and get determining temperature
It spends after offset, according to the temperature sensor being arranged on the evaporator circuit of the air conditioner under the current operation frequency
The temperature measured, and the temperature compensation value obtained calculate the evaporating temperature of the air conditioner, especially when the temperature is mended
Repaying value is that the temperature measured and the current operation frequency are substituted into the calculation formula obtained when being obtained by calculation formula
In, the evaporating temperature of the air conditioner can be calculated.
In the present embodiment, by 26APF-3 grades of frequency conversion on-hooks, operating condition 27/19, outdoor operating condition 35/24 are freezed indoors
Gao Feng, under the conditions of 16 DEG C of set temperature, test data is as follows:
| f(Hz) | 22 | 53 | 86 |
| Te(℃) | 19 | 12 | 8 |
| Tem(℃) | 19 | 11.7 | 6.1 |
| P0(Mpa) | 1.308 | 1.041 | 0.868 |
| T0(℃) | 18.9 | 1.5 | 6 |
I.e. when compressor operating frequency is 22Hz, and the temperature measured is 19 DEG C, the calculation formula obtained at this time is Tem
=Te-A, due to A=Te-T0, and the P0 that pressure gauge tests out is 1.308, at this time by table look-up or processing software conversion after
The temperature value arrived is 18.9 DEG C, therefore, A=Te-T0=19 DEG C -18.9 DEG C=0.1 DEG C, eventually by-A=19 DEG C of Tem=Te -
0.1 DEG C=18.9 DEG C, rounding up and evaporating temperature can be obtained is 19 DEG C.
It is understood that the present invention is analyzed by experimental test and data, convertible frequency air-conditioner has been obtained in different frequency model
When enclosing operation, the corresponding relationship of temperature Te and system actual evaporation temperature Tem that temperature sensor measurement arrives, and using segmentation
Calculation realizes the corrected Calculation of convertible frequency air-conditioner evaporating temperature under refrigerating state, efficiently solves existing detection method
In convertible frequency air-conditioner, high frequency run when, detected value deviate system actual evaporation temperature the problem of, improve with evaporating temperature for control
The accuracy of the relevant control algorithm of parameter processed.Further, the present invention does not increase new detection device, only passes through software program
Design is calculated and be can be realized, simple and convenient and at low cost.
The detection method for the air conditioner evaporating temperature that the present embodiment proposes, when air conditioner is run in cooling mode, first
It determines the frequency separation in the air conditioner where the current operation frequency of compressor, it is corresponding then to obtain the frequency separation
Temperature compensation value, finally according to the temperature sensor being arranged on the evaporator circuit of the air conditioner in the current operation frequency
Under the temperature that measures, and the temperature compensation value that obtains calculates the evaporating temperature of the air conditioner, it is therefore prevented that temperature sensor
The temperature measured is directly influenced practical steaming as evaporating temperature by the temperature departure system actual evaporation temperature detected
The accuracy of temperature is sent out, the present invention obtains corresponding temperature compensation value in different running frequency sections and calculates evaporating temperature, mentions
The high accuracy of evaporating temperature detection.
The present invention further provides a kind of detection systems of air conditioner evaporating temperature.
Referring to the functional module signal that Fig. 3, Fig. 3 are the detection system preferred embodiment of the air condition of that present invention evaporating temperature
Figure.
It is emphasized that it will be apparent to those skilled in the art that functional block diagram shown in Fig. 3 is only one preferably real
The exemplary diagram of example is applied, those skilled in the art surrounds the functional module of the detection system of air conditioner evaporating temperature shown in Fig. 3,
The supplement of new functional module can be carried out easily；The title of each functional module is self-defined title, is only used for auxiliary and understands the sky
The each program function block for adjusting the detection system of device evaporating temperature, is not used in restriction technical solution of the present invention, the technology of the present invention
The core of scheme is the function to be reached of the functional module of each self-defined title.
In the present embodiment, the detection system of the air conditioner evaporating temperature includes:
Determining module 10, for when air conditioner is run in cooling mode, determining working as compressor in the air conditioner
Frequency separation where preceding running frequency；
In the present embodiment, when the outdoor controller of air conditioner detects that air-conditioning is run with refrigerating state, steaming can be passed through
The temperature of the temperature sensor detection evaporator on device circuit is sent out, the temperature hereinafter measured is indicated with Te.Then, it is determined that mould
Block 10 determines that the current operation frequency of compressor in the air conditioner, the current operation frequency of compressor are indicated with f, then determines institute
State the frequency separation where current operation frequency f.In the present embodiment, the number of the frequency separation can carry out as the case may be
Setting.
In the present embodiment, the air conditioner is preferably the convertible frequency air-conditioner for using capillary-compensated.
Module 20 is obtained, for obtaining the corresponding temperature compensation value of the frequency separation；
Computing module 30, the temperature sensor being arranged on the evaporator circuit according to the air conditioner is described current
The temperature measured under running frequency, and the temperature compensation value obtained calculate the evaporating temperature of the air conditioner.
In the present embodiment, the embodiment for obtaining module 20 and obtaining the corresponding temperature compensation value of the frequency separation
Include:
1) mode one, the acquisition module 20 include:
First acquisition unit obtains determining for the mapping relations according to preset frequency separation and preset temperature value
The corresponding preset temperature value of the frequency separation；
Processing unit, the preset temperature value for will acquire is as the corresponding temperature compensation value of the frequency separation.
In the present embodiment, the mapping relations of each frequency separation and preset temperature value, the preset temperature are established in advance
Value can be the temperature value that user obtains according to experimental result in advance, for example, frequency separation of the invention includes three frequency zones
Between, then three preset temperature values can be set according to experimental result.The subsequent frequency separation where determining current operation frequency
Later, first acquisition unit can obtain determining frequency according to the mapping relations of preset frequency separation and preset temperature value
The corresponding preset temperature value in section, the preset temperature value that processing unit will acquire is as the corresponding temperature-compensating of the frequency separation
Value.
2) mode two, further, in order to improve the accuracy that the corresponding temperature compensation value of frequency separation obtains, the frequency
The corresponding temperature compensation value in rate section is preferably obtained according to the corresponding calculation formula of frequency separation, in the preferred frequency separation packet
When including first frequency section f<F1, second frequency section F1≤f<F2 and third frequency separation f>=F2, each frequency separation and temperature
The mapping relations for spending offset are as follows:
When the frequency separation is first frequency section, the corresponding temperature compensation value △ in first frequency section
T=A；
When the frequency separation is second frequency section, the corresponding temperature compensation value △ T=in the second frequency section
[(f-F1)/(F2-F1)×(B-A)+A]；
When the frequency separation is third frequency separation, the corresponding temperature compensation value △ T=of the third frequency separation
[(f-F2)/(X-F2) × (C-B)+B], wherein X indicates the rated frequency of compressor, and A, B and C respectively indicate F1, F2 and X couple
The pre-set constant value answered；
That is, obtaining module 20 after determining the frequency separation where the current operation frequency of compressor
Corresponding temperature compensation value is obtained according to determining frequency separation.
The computing module 30, the temperature for being also used to measure under current operation frequency subtract the temperature-compensating of acquisition
Value, obtains the evaporating temperature of the air conditioner.
That is, the corresponding evaporation in the first frequency section is warm when the frequency separation is first frequency section
Spend Tem=Te-A；
When the frequency separation is second frequency section, the corresponding evaporating temperature Tem=Te-in the second frequency section
[(f-F1)/(F2-F1)×(B-A)+A]；
When the frequency separation is third frequency separation, the corresponding evaporating temperature Tem=Te-of the third frequency separation
[(f-F2)/(X-F2) × (C-B)+B], wherein Tem indicates evaporating temperature, and Te indicates the temperature measured.
In the present embodiment, by a large amount of test data and analysis as a result, the value for obtaining the F1 is preferably 30Hz, F2's
Value is preferably 60Hz, therefore, when outdoor controller detects that the current operation frequency of compressor is f < 30Hz, the meter of evaporating temperature
Calculating formula is just Tem=Te-A.When outdoor controller detects that the current operation frequency of compressor is 30Hz < f < 60Hz, steam
The calculation formula for sending out temperature is just Tem=Te-[(f-30)/(60-30) × (B-A)+A].When outdoor controller detects compression
The current operation frequency of machine is f >=60Hz, and the calculation formula of evaporating temperature is just Tem=Te-[(f-60)/(80-60) × (C-
B)+B], it will be understood that rated frequency is set as 80Hz at this time, and in the present embodiment, the setting of rated frequency carries out as the case may be
Setting, herein without limitation.
It is worth noting that, the acquisition module 20 includes:
Second acquisition unit is detected for obtaining preset pressure gauge when the running frequency of compressor is F1, F2 and X
Each pressure value；
The second acquisition unit is also used to obtain the corresponding temperature value of each pressure value；
The second acquisition unit is also used to obtain the temperature that the temperature sensor measures under current operation frequency
Degree；
Computing unit, for calculating separately each temperature value of acquisition and the difference of the temperature measured, and
Using each difference being calculated as pre-set constant value A, B and C.
In the present embodiment, when the current operation frequency of compressor is located at different frequency separations, second acquisition unit
The corresponding calculation formula of the frequency separation is obtained, then determines pre-set constant value required for the calculation formula, for example, compressor
Current operation frequency where frequency separation be F1≤f < F2, at this time calculation formula be Tem=Te-[(f-F1)/(F2-F1)
× (B-A)+A], then, pre-set constant value is exactly A and B, and specifically, the calculation of pre-set constant value A includes: firstly, second
Acquiring unit obtains the pressure value that preset pressure gauge is detected when the running frequency of compressor is F1, then obtains the pressure
It is worth corresponding temperature value, the temperature sensor then obtained on evaporator circuit measures under the current operation frequency
Temperature, final computing unit calculates the difference of the temperature value Yu the temperature measured, and the difference that will be calculated
As pre-set constant value A, in the present embodiment, the computing unit calculates the difference of the temperature value Yu the temperature measured
Value, preferably subtracts the temperature value for the temperature measured, to obtain pre-set constant value.The meter of the value of pre-set constant value B
Calculation mode is consistent, and details are not described herein again.
In the present embodiment, in order to improve the flexibility that the corresponding temperature value of pressure value obtains, the second acquisition unit,
It is also used to that each pressure value is converted to temperature value by preset conversion application, and obtains each temperature after conversion
Value；
Alternatively, obtaining the corresponding temperature value of each pressure value in the table of comparisons of preset pressure value and temperature value.
That is, can both be applied by preset conversion by each pressure value after detecting pressure value
Temperature value is converted to, it can also be by tabling look-up to obtain the corresponding temperature value of pressure value.In the present embodiment, the conversion application is preferred
For refrigerant status inquiry application, pressure value is input in the conversion application by air conditioner, the conversion application can will described in
Pressure value is converted to temperature value, and final acquiring unit obtains the temperature value after conversion.Either, pressure has been previously stored in system
The table of comparisons of value and temperature value, then acquiring unit obtains the corresponding temperature value of pressure value from the table of comparisons of storage.Certainly,
The table of comparisons that pressure value and temperature value whether are prestored in system can also be first judged, if so, then acquiring unit is from pair prestored
According to the corresponding temperature value of pressure value is obtained in table, if not having, the pressure value is converted to by temperature by conversion application
Value, and by after conversion temperature value and the pressure value associated storage, the subsequent numerical value that storage can be used directly.Wherein, pressure value
It is as shown in the table with the table of comparisons of temperature value, it is notable that following table is only a part of the table of comparisons.
To be best understood from the present embodiment, citing application scenarios are as follows:
The first external inspecting tooling on air-conditioner outdoor machine electric control plate, to monitor Te and f and other operating parameters；Then it is steaming
Send out the external pressure gauge of export pipeline of device refrigerating state flow direction, the evaporating pressure under current operation frequency to detect the compressor
P0, that is, pressure value；Then air conditioner is placed in enthalpy difference chamber, and is arranged and runs at different frequencies, to obtain each different preset
Constant value, specifically:
1, set indoor operating condition 27/19, outdoor operating condition 35/24, air-conditioning in a chiller mode, high wind file, 16 DEG C of set temperature,
The current operation frequency for setting compressor is run as 30Hz, is recorded the temperature Te measured and pressure value P 0, is utilized refrigerant state
P0 is converted to T0 by query software, or according to pressure value temperature value corresponding with the table of comparisons of temperature value acquisition pressure value P 0
T0 finally calculates the value of A according to A=Te-T0；
2, set indoor operating condition 27/19, outdoor operating condition 35/24, air-conditioning in a chiller mode, high wind file, 16 DEG C of set temperature,
Setting compressor currently operates to frequency 60Hz operation, records Te and P0, is converted to P0 using refrigerant status inquiry software
T0, or according to pressure value temperature value T0 corresponding with the table of comparisons of temperature value acquisition pressure value P 0, finally according to B=Te-
The value of T0 calculating B；
3, set indoor operating condition 27/19, outdoor operating condition 35/24, air-conditioning in a chiller mode, high wind file, 16 DEG C of set temperature,
Setting compressor currently operates to frequency 80Hz operation, records Te and P0, is converted to P0 using refrigerant status inquiry software
T0, or according to pressure value temperature value T0 corresponding with the table of comparisons of temperature value acquisition pressure value P 0, finally according to C=Te-
The value of T0 calculating C.
By above-mentioned calculation, pre-set constant value A, B, C can be obtained.
In the present embodiment, the current operation frequency of compressor in the air conditioner is determined in determining module 10, and obtain
After modulus block 20 gets determining temperature compensation value, computing module 30 is arranged on the evaporator circuit according to the air conditioner
The temperature that is measured under the current operation frequency of temperature sensor, and the temperature compensation value obtained calculates the air-conditioning
The evaporating temperature of device by the temperature measured and described is worked as especially when the temperature compensation value is obtained by calculation formula
Preceding running frequency substitutes into the calculation formula obtained, can calculate the evaporating temperature of the air conditioner.
In the present embodiment, by 26APF-3 grades of frequency conversion on-hooks, operating condition 27/19, outdoor operating condition 35/24 are freezed indoors
Gao Feng, under the conditions of 16 DEG C of set temperature, test data is as follows:
| f(Hz) | 22 | 53 | 86 |
| Te(℃) | 19 | 12 | 8 |
| Tem(℃) | 19 | 11.7 | 6.1 |
| P0(Mpa) | 1.308 | 1.041 | 0.868 |
| T0(℃) | 18.9 | 1.5 | 6 |
I.e. when compressor operating frequency is 22Hz, and the temperature measured is 19 DEG C, the calculation formula obtained at this time is Tem
=Te-A, due to A=Te-T0, and the P0 that pressure gauge tests out is 1.308, at this time by table look-up or processing software conversion after
The temperature value arrived is 18.9 DEG C, therefore, A=Te-T0=19 DEG C -18.9 DEG C=0.1 DEG C, eventually by-A=19 DEG C of Tem=Te -
0.1 DEG C=18.9 DEG C, rounding up and evaporating temperature can be obtained is 19 DEG C.
It is understood that the present invention is analyzed by experimental test and data, convertible frequency air-conditioner has been obtained in different frequency model
When enclosing operation, the corresponding relationship of temperature Te and system actual evaporation temperature Tem that temperature sensor measurement arrives, and using segmentation
Calculation realizes the corrected Calculation of convertible frequency air-conditioner evaporating temperature under refrigerating state, efficiently solves existing detection method
In convertible frequency air-conditioner, high frequency run when, detected value deviate system actual evaporation temperature the problem of, improve with evaporating temperature for control
The accuracy of the relevant control algorithm of parameter processed.Further, the present invention does not increase new detection device, only passes through software program
Design is calculated and be can be realized, simple and convenient and at low cost.
The detection system for the air conditioner evaporating temperature that the present embodiment proposes, when air conditioner is run in cooling mode, first
It determines the frequency separation in the air conditioner where the current operation frequency of compressor, it is corresponding then to obtain the frequency separation
Temperature compensation value, finally according to the temperature sensor being arranged on the evaporator circuit of the air conditioner in the current operation frequency
Under the temperature that measures, and the temperature compensation value that obtains calculates the evaporating temperature of the air conditioner, it is therefore prevented that temperature sensor
The temperature measured is directly influenced practical steaming as evaporating temperature by the temperature departure system actual evaporation temperature detected
The accuracy of temperature is sent out, the present invention obtains corresponding temperature compensation value in different running frequency sections and calculates evaporating temperature, mentions
The high accuracy of evaporating temperature detection.
It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or the device that include a series of elements not only include those elements, and
And further include the other elements being not explicitly listed, or further include for this process, method, article or device institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including being somebody's turn to do
There is also other identical elements in the process, method of element, article or device.
The serial number of the above embodiments of the invention is only for description, does not represent the advantages or disadvantages of the embodiments.
The above is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (8)
1. a kind of detection method of air conditioner evaporating temperature, which is characterized in that the detection method packet of the air conditioner evaporating temperature
It includes:
When air conditioner is run in cooling mode, the frequency in the air conditioner where the current operation frequency of compressor is determined
Section；
Obtain the corresponding temperature compensation value of the frequency separation；
It is measured under the current operation frequency according to the temperature sensor being arranged on the evaporator circuit of the air conditioner
Temperature, and the temperature compensation value obtained calculate the evaporating temperature of the air conditioner；
Wherein, described the step of obtaining the frequency separation corresponding temperature compensation value, includes:
According to the mapping relations of preset frequency separation and preset temperature value, it is corresponding default to obtain the determining frequency separation
Temperature value；
The preset temperature value that will acquire is as the corresponding temperature compensation value of the frequency separation.
2. the detection method of air conditioner evaporating temperature as described in claim 1, which is characterized in that the frequency separation includes the
One frequency separation f<F1, second frequency section F1≤f<F2 and third frequency separation f>=F2；
Described the step of obtaining the frequency separation corresponding temperature compensation value further include:
When the frequency separation is first frequency section, the corresponding temperature compensation value △ T=in the first frequency section is obtained
A；
When the frequency separation is second frequency section, the corresponding temperature compensation value △ T=in the second frequency section is obtained
[(f-F1)/(F2-F1)×(B-A)+A]；
When the frequency separation is third frequency separation, the corresponding temperature compensation value △ T=of the third frequency separation is obtained
[(f-F2)/(X-F2) × (C-B)+B], wherein X indicates the rated frequency of compressor, and A, B and C respectively indicate F1, F2 and X couple
The pre-set constant value answered；
The temperature sensor being arranged on the evaporator circuit according to the air conditioner measures under the current operation frequency
The temperature arrived, and the temperature compensation value the step of calculating the evaporating temperature of the air conditioner obtained include:
The temperature compensation value that the temperature measured under current operation frequency is subtracted to acquisition obtains the evaporation temperature of the air conditioner
Degree.
3. the detection method of air conditioner evaporating temperature as claimed in claim 2, which is characterized in that pre-set constant value A, B and C's
Calculation includes:
Obtain each pressure value that preset pressure gauge is detected when the running frequency of compressor is F1, F2 and X；
Obtain the corresponding temperature value of each pressure value；
Obtain the temperature that the temperature sensor measures under current operation frequency；
Calculate separately each temperature value of acquisition and the difference of the temperature measured, and each difference that will be calculated
Value is used as pre-set constant value A, B and C.
4. the detection method of air conditioner evaporating temperature as claimed in claim 3, which is characterized in that described to obtain each pressure value
The step of corresponding temperature value includes:
Each pressure value is converted into temperature value by preset conversion application, and obtains each temperature value after conversion；
Alternatively, obtaining the corresponding temperature value of each pressure value in the table of comparisons of preset pressure value and temperature value.
5. a kind of detection system of air conditioner evaporating temperature, which is characterized in that the detection system packet of the air conditioner evaporating temperature
It includes:
Determining module, for when air conditioner is run in cooling mode, determining the current operation of compressor in the air conditioner
Frequency separation where frequency；
Module is obtained, for obtaining the corresponding temperature compensation value of the frequency separation；
Computing module, the temperature sensor being arranged on the evaporator circuit according to the air conditioner is in the current operation frequency
The temperature measured under rate, and the temperature compensation value obtained calculate the evaporating temperature of the air conditioner；
Wherein, the acquisition module includes:
First acquisition unit obtains determining described for the mapping relations according to preset frequency separation and preset temperature value
The corresponding preset temperature value of frequency separation；
Processing unit, the preset temperature value for will acquire is as the corresponding temperature compensation value of the frequency separation.
6. the detection system of air conditioner evaporating temperature as claimed in claim 5, which is characterized in that the frequency separation includes the
One frequency separation f<F1, second frequency section F1≤f<F2 and third frequency separation f>=F2；
The acquisition module is also used to obtain the first frequency section pair when the frequency separation is first frequency section
The temperature compensation value △ T=A answered；
When the frequency separation is second frequency section, the corresponding temperature compensation value △ T=in the second frequency section is obtained
[(f-F1)/(F2-F1)×(B-A)+A]；
When the frequency separation is third frequency separation, the corresponding temperature compensation value △ T=of the third frequency separation is obtained
[(f-F2)/(X-F2) × (C-B)+B], wherein X indicates the rated frequency of compressor, and A, B and C respectively indicate F1, F2 and X couple
The pre-set constant value answered；
The computing module, the temperature for being also used to measure under current operation frequency subtract the temperature compensation value of acquisition, obtain
The evaporating temperature of the air conditioner.
7. the detection system of air conditioner evaporating temperature as claimed in claim 6, which is characterized in that the acquisition module includes:
Second acquisition unit, it is each to be detected when F1, F2 and X in the running frequency of compressor for obtaining preset pressure gauge
A pressure value；
The second acquisition unit is also used to obtain the corresponding temperature value of each pressure value；
The second acquisition unit is also used to obtain the temperature that the temperature sensor measures under current operation frequency；
Computing unit, for calculating separately each temperature value of acquisition and the difference of the temperature measured, and will meter
Obtained each difference is as pre-set constant value A, B and C.
8. the detection system of air conditioner evaporating temperature as claimed in claim 7, which is characterized in that the second acquisition unit,
It is also used to that each pressure value is converted to temperature value by preset conversion application, and obtains each temperature after conversion
Value；
Alternatively, obtaining the corresponding temperature value of each pressure value in the table of comparisons of preset pressure value and temperature value.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005024153A (en) * | 2003-07-01 | 2005-01-27 | Matsushita Electric Ind Co Ltd | Method of controlling operating frequency of compressor of multi-chamber air conditioner |
| JP2009121787A (en) * | 2007-11-19 | 2009-06-04 | Panasonic Corp | Air conditioner |
| CN101821508A (en) * | 2007-10-08 | 2010-09-01 | 艾默生环境优化技术有限公司 | Variable speed compressor protection system and method |
| CN102563805A (en) * | 2011-12-22 | 2012-07-11 | 广东美的制冷设备有限公司 | Control method for calculating exhaust temperature of compressor of air conditioner |
| CN104110774A (en) * | 2013-08-27 | 2014-10-22 | 广东美的制冷设备有限公司 | Air conditioner running control method and device |
-
2016
- 2016-07-12 CN CN201610555613.0A patent/CN106196444B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005024153A (en) * | 2003-07-01 | 2005-01-27 | Matsushita Electric Ind Co Ltd | Method of controlling operating frequency of compressor of multi-chamber air conditioner |
| CN101821508A (en) * | 2007-10-08 | 2010-09-01 | 艾默生环境优化技术有限公司 | Variable speed compressor protection system and method |
| JP2009121787A (en) * | 2007-11-19 | 2009-06-04 | Panasonic Corp | Air conditioner |
| CN102563805A (en) * | 2011-12-22 | 2012-07-11 | 广东美的制冷设备有限公司 | Control method for calculating exhaust temperature of compressor of air conditioner |
| CN104110774A (en) * | 2013-08-27 | 2014-10-22 | 广东美的制冷设备有限公司 | Air conditioner running control method and device |
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