CN101749830B - Temperature control precision regulating method of variable frequency air conditioner - Google Patents
Temperature control precision regulating method of variable frequency air conditioner Download PDFInfo
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- CN101749830B CN101749830B CN2009103122654A CN200910312265A CN101749830B CN 101749830 B CN101749830 B CN 101749830B CN 2009103122654 A CN2009103122654 A CN 2009103122654A CN 200910312265 A CN200910312265 A CN 200910312265A CN 101749830 B CN101749830 B CN 101749830B
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Abstract
The invention relates to a technology of variable frequency air conditioners and particularly discloses a temperature control precision regulating method of a variable frequency air conditioner, solving the problems of overshooting and large temperature fluctuation easily occurring in regulation of indoor temperature because the traditional variable frequency air conditioner can not realize precision regulation to the indoor temperature. The technical scheme has the key points that: in the design of a temperature control software, a temperature-resistance relation table with the temperature interval of 1 DEG C is converted into a temperature-AD sampling value relation table with the temperature interval of 0.1 DEG C; and an indoor machine MCU sends a current indoor temperature value and a temperature set value to an outdoor machine MCU, and the outdoor machine MCU compares a temperature difference between the current indoor temperature value and the temperature set value and controls the operation of a compressor with the increment/decrement of 0.1Hz frequency which is the minimum multiple of frequency 0.1 Hz. The invention has the advantages that the regulation accuracy of the indoor temperature can reach 0.1 DEG C, thereby realizing small temperature fluctuation and fast refrigeration and heating, and the temperature control precision regulating method of the variable frequency air conditioner is suitable for variable frequency temperature regulation.
Description
Technical field
The present invention relates to the convertible frequency air-conditioner technology, relate to the temperature control precision regulating method of convertible frequency air-conditioner specifically.
Background technology
The present air-conditioner of producing and selling at home, generally have remote controller and or button so that air-conditioner is operated, with function needs such as satisfy the specific refrigeration of user, heat; Also have display screens such as LED or LCD to show air-conditioner current working state and running parameter, remote controller or button input design temperature are adopted in temperature control, increment/decrement design temperature with 1 ℃, Minimum Increment/decrement is 0.5 ℃ in the market, control mode is that design temperature compares with indoor temperature, both temperature difference surpass certain numerical value, the control compressor start, if frequency changer, then according to both temperature difference sizes, control the operating frequency of compressor with the frequency change rate of 1Hz, in the time of near reaching design temperature, because the temperature difference is less, frequency-changeable compressor is realized the automatic adjusting of temperature then with lower frequency but still be the frequency change rate work of 1Hz.
But, because indoor design temperature is the interval variation with minimum 0.5 ℃, indoor temperature is 0.5 ℃ with both difference minimums of design temperature, thereby, present control method can not realize the fine adjustment of frequency-changeable compressor to indoor temperature, and the adjusting of indoor temperature realizes that easily overshoot, temperature fluctuation are big.
Summary of the invention
Technical problem to be solved by this invention is: the temperature control precision regulating method that proposes a kind of convertible frequency air-conditioner, solve convertible frequency air-conditioner in the prior art and can not realize fine adjustment, cause the adjusting of indoor temperature to occur overshoot, problem that temperature fluctuation is big easily the adjusting of indoor temperature.
The present invention solves the problems of the technologies described above the technical scheme that is adopted: the temperature control precision regulating method of convertible frequency air-conditioner may further comprise the steps:
A. in the design of temperature control software, be that to be converted to the temperature interval be temperature～AD sampled value relation table of 0.1 ℃ for temperature～resistance relation table of 1 ℃ with the temperature interval;
B. indoor machine temperature sensor sampling internal resistance Current Temperatures, through the AD conversion, is that temperature～AD sampled value relation table of 0.1 ℃ is tabled look-up and drawn current indoor temperature value with transformation result by the temperature interval among the step a, and described internal resistance Current Temperatures is the AD sampled value;
C. the indoor set MCU current indoor temperature setting value of decoding, and the indoor temperature setting value transferred to off-premises station MCU with current indoor temperature value;
D. off-premises station MCU contrast indoor temperature setting value is worth the temperature contrast value with current indoor temperature, and according to the size of the temperature contrast value integral multiple with 0.1Hz, the running of the frequency increment of minimum 0.1HZ/decrement control compressor;
Among the described step a, be that to be converted to the temperature interval be that the method for temperature～AD sampled value relation table of 0.1 ℃ is for temperature～resistance relation table of 1 ℃ with the temperature interval:
A1. with the temperature interval temperature～resistance is obtained in temperature～resistance relation table segmentation of 1 ℃ by curve match mode high power expression formula;
A2. AD=(10/ (R+10)) * 1023 by formula obtains the AD sampled value from 0 resistance value that changes to 1023 correspondences;
A3. the resistance value of trying to achieve among the step a2 is brought in the high power expression formula of the temperature～resistance among the step a1, obtain its corresponding temperature value;
A4. the method that the temperature value that is drawn among the step a3 be multiply by 10 back round offs rounds, and adds a positive integer, makes it become positive integer, and this positive integer and corresponding with it AD value are deposited table.
The invention has the beneficial effects as follows: the indoor temperature degree of regulation can reach 0.1 ℃, both can shorten the time that indoor temperature reaches design temperature greatly, has reduced the amplitude of temperature overshoot again, the realization temperature fluctuation is little, fast-refrigerating, heat, further energy-saving and cost-reducing, reduce the fluctuation noise simultaneously.
The specific embodiment
The present invention is directed to convertible frequency air-conditioner in the prior art and can not realize fine adjustment, cause the adjusting of indoor temperature to occur overshoot, problem that temperature fluctuation is big easily, propose a kind of temperature control precision regulating method of convertible frequency air-conditioner the adjusting of indoor temperature.
This method adopts following steps to realize: a1. is temperature～resistance is obtained in temperature～resistance relation table segmentation of 1 ℃ by curve match mode a high power expression formula with the temperature interval;
A2. AD=(10/ (R+10)) * 1023 by formula obtains the AD sampled value from 0 resistance value that changes to 1023 correspondences, the wherein maximum sampled values of 10 AD of 1023 expressions;
A3. the resistance value of trying to achieve among the step a2 is brought in the high power expression formula of the temperature～resistance among the step a1, obtain its corresponding temperature value;
A4. cut apart for the ease of the temperature that realizes 0.1 ℃ and the negative temperature storage, the method that the temperature value that is drawn among the step a3 be multiply by 10 back round offs rounds, add a positive integer, make it become positive integer, this positive integer and corresponding with it AD value are deposited table, for example: can adopt formula t*10+50=T in order to store minimum temperature for-50 ℃, wherein t represents actual temperature value, and T represents to deposit the table temperature value.
B. indoor machine temperature sensor sampling internal resistance Current Temperatures through the AD conversion, is that temperature～AD sampled value relation table of 0.1 ℃ is tabled look-up and drawn current indoor temperature value with transformation result by the temperature interval among the step a;
C. the indoor set MCU current indoor temperature setting value of decoding, and the indoor temperature setting value transferred to off-premises station MCU with current indoor temperature value;
D. off-premises station MCU contrast indoor temperature setting value is worth the temperature contrast value with current indoor temperature, and according to the running of the size of temperature contrast value with frequency increment/decrement control compressor of the minimum 0.1HZ of integral multiple of 0.1Hz, big integer multiple frequency with 0.1HZ when the temperature contrast value is big increases/decrement control compressor operation, when the temperature contrast value hour can the 0.1HZ frequency increase/decrement control compressor operation, thereby reach the purpose of 0.1 ℃ precision control indoor temperature.
Claims (1)
1. the temperature control precision regulating method of convertible frequency air-conditioner is characterized in that: may further comprise the steps:
A. in the design of temperature control software, be that to be converted to the temperature interval be temperature～AD sampled value relation table of 0.1 ℃ for temperature～resistance relation table of 1 ℃ with the temperature interval;
B. indoor machine temperature sensor sampling internal resistance Current Temperatures, through the AD conversion, is that temperature～AD sampled value relation table of 0.1 ℃ is tabled look-up and drawn current indoor temperature value with transformation result by the temperature interval among the step a, and described internal resistance Current Temperatures is the AD sampled value;
C. the indoor set MCU current indoor temperature setting value of decoding, and the indoor temperature setting value transferred to off-premises station MCU with current indoor temperature value;
D. off-premises station MCU contrast indoor temperature setting value is worth the temperature contrast value with current indoor temperature, and according to the size of the temperature contrast value integral multiple with 0.1Hz, the running of the frequency increment of minimum 0.1HZ/decrement control compressor;
Among the described step a, be that to be converted to the temperature interval be that the method for temperature～AD sampled value relation table of 0.1 ℃ is for temperature～resistance relation table of 1 ℃ with the temperature interval:
A1. with the temperature interval temperature～resistance is obtained in temperature～resistance relation table segmentation of 1 ℃ by curve match mode high power expression formula;
A2. AD=(10/ (R+10)) * 1023 by formula obtains the AD sampled value from 0 resistance value that changes to 1023 correspondences, and R represents resistance value;
A3. the resistance value of trying to achieve among the step a2 is brought in the high power expression formula of the temperature～resistance among the step a1, obtain its corresponding temperature value;
A4. the method that the temperature value that is drawn among the step a3 be multiply by 10 back round offs rounds, and adds a positive integer, makes it become positive integer, and this positive integer and corresponding with it AD sampled value are deposited table.
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| CN2009103122654A CN101749830B (en) | 2009-12-25 | 2009-12-25 | Temperature control precision regulating method of variable frequency air conditioner |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104880020A (en) * | 2015-06-18 | 2015-09-02 | 合肥美菱股份有限公司 | Variable-frequency refrigerator 0.1-degree temperature acquisition processing method |
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| CN101976050B (en) * | 2010-11-09 | 2012-02-01 | 田利 | Air-condition constant temperature operation energy-conservation control system |
| CN102003774B (en) * | 2010-12-29 | 2012-08-01 | 石家庄国祥运输设备有限公司 | Indoor temperature control method of train air-conditioner |
| CN102299837A (en) * | 2011-07-21 | 2011-12-28 | 四川长虹空调有限公司 | Frequency conversion air-conditioner temperature data communication method |
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| CN105277293B (en) * | 2015-07-27 | 2018-03-30 | 深圳市振邦智能科技股份有限公司 | A kind of temperature checking method and system |
| CN108361936A (en) * | 2018-02-12 | 2018-08-03 | 四川长虹空调有限公司 | A kind of method and system promoting DC frequency converting air-conditioner pleasant climate precision |
| CN109283955B (en) * | 2018-09-20 | 2021-01-29 | 广东美的暖通设备有限公司 | Temperature sampling control method and household appliance |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104880020A (en) * | 2015-06-18 | 2015-09-02 | 合肥美菱股份有限公司 | Variable-frequency refrigerator 0.1-degree temperature acquisition processing method |
| CN104880020B (en) * | 2015-06-18 | 2017-03-01 | 合肥美菱股份有限公司 | 0.1 degree of temperature acquisition processing method of frequency conversion refrigerator |
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