Air conditioner energy efficiency automatic control method, system and air conditioner

Technical Field

The invention relates to the technical field of air conditioning, specifically, relates to an air conditioning energy efficiency automatic control method, system and air conditioner.

Background Art

As domestic air conditioner the general application of the air conditioner and the rapid development of technology, for air-conditioning the performance requirements of the people is being progressively raised. The air conditioner efficiency, usually domestic air-conditioning refrigeration energy efficiency ratio (EER) of the codeword, is rated refrigerating capacity with the ratio of the rated power consumption. In addition, cold and warm type household air conditioner also includes the heating energy efficiency (COP), is referred to as the rated systems heat and the rated power of the ratio. Simple and stresses, air conditioner efficiency is the consumption of the same number of the crowds air-conditioning/heating of the number, the higher the efficiency of the air conditioner more electricity. Therefore, the air conditioner energy efficiency is a measure of the quality of the important parameters of the performance of the air conditioner. In the prior art, domestic air conditioning energy efficiency test of the different criteria, such as the European energy efficiency test is composed of a plurality of different working conditions different load test results. However in different conditions, under different load need manual debugging, uncertainty more, efficiency is low, a long time is not accurate.

Content of the invention

The invention solves the problem of different working conditions, under different load of air-conditioning efficiency during the testing process need manual debugging, uncertainty more, efficiency is low, a long time is not accurate.

To solve the above problems in the at least one aspect, the invention provides an air conditioning energy efficiency automatic control method, comprising the following steps:

Step S1, in the current condition, obtaining said current operating condition corresponding to the current opening degree of the electronic expansion valve, the opening degree of the electronic expansion valve is fixed at the current opening degree, the frequency of the compressor is adjusted, by the 1st effective energy efficiency data and its corresponding to the frequency of the compressor 1st, the 1st effective energy efficiency data for the current operating condition and the 1st compressor frequency of optimal energy efficiency data;

Step S2, so that the compressor works at said 1st compressor frequency, and adjusting the opening degree of the electronic expansion valve, to obtain 2nd effective energy efficiency data and its corresponding to the opening degree of the electronic expansion valve 2nd, the 2nd energy efficiency data for the current operating condition and the 2nd electronic expansion valve opening under the optimum energy efficiency data;

Step S3, in the different measured condition, repeat steps S1 - S2, obtained under different working conditions of the 2nd effective energy efficiency data;

Step S4, according to the step S3 in the 2nd under different working conditions of effective energy efficiency data integrated computing, realize the automatic control of the air conditioner efficiency.

Therefore, can automatically adjust the air-conditioning unit in different conditions under different load and calculating the energy efficiency of the air conditioner, to reduce the manual waste, and short time, improving the working efficiency, result is more accurate.

Optionally, in step S1 before, also includes

Based on the present operating condition of the compressor load requirements of the initial frequency.

Therefore, the current operating condition can be obtained to meet the load requirements of the compressor frequency.

Optionally, obtaining said current operating condition corresponding to the current opening degree of the electronic expansion valve, comprising: according to the real-time feedback of the air-suction superheat degree of the electronic expansion valve to adjust the initial opening, to obtain the current opening degree of the electronic expansion valve.

Therefore, through the air-suction superheat degree to adjust the current electronic expansion valve opening is more accurate, and can make the current air-suction superheat degree with the preset air-suction superheat degree interval.

Optionally, step S1 in the frequency of the compressor is adjusted includes with the initial frequency as the center point of the compressor, in accordance with the pre-set frequency range of the frequency of the compressor is adjusted up and down.

Therefore, it is easy to confirm 1st effective energy efficiency data.

Optionally, the pre-determined frequency range is in the center of the initial frequency - 5HZ to + 5 HZ within the range of the neighborhood.

Therefore, the frequency of the compressor impact the ability of the unit air conditioner, in the above-mentioned preset within the air-conditioning unit can ensure the reliability of the guarantee.

Optionally, step S2 is adjusted in the electronic expansion valve opening including: to the effective energy efficiency data in the 1st 1st electronic expansion valve opening as the center point, in accordance with the opening degree of the pre-set upper and lower adjusting the opening degree of the electronic expansion valve.

Therefore, it is easy to confirm 2nd effective energy efficiency data.

Optionally, the pre-set opening enabling said electronic expansion valve in the air-suction superheat degree 1 °C to 3 °C range.

Therefore, the opening degree of the electronic expansion valve of the influence of the capacity of the air conditioning unit, in the above-mentioned preset within the air-conditioning unit can ensure the reliability of the guarantee.

The invention also provides an air conditioner energy efficiency automatic control system, including

Parameter setting module, is used for setting the different requirements of the working parameter;

Air-suction superheat degree adjusting module, according to the real-time feedback of the air-suction superheat degree, adjusting the initial opening of the electronic expansion valve, so that the current air-suction superheat degree at the preset air-suction superheat degree interval;

The work parameter adjusting module, used for adjusting the frequency of the compressor and the opening degree of the electronic expansion valve, in order to obtain the energy efficiency data;

The effective energy efficiency data determination module, which is used for the energy efficiency data is compared, the value of the optimal energy efficiency data determined for the effective energy efficiency data.

Alternatively, the parameter adjustment module in the work of the compressor is adjusted frequency includes: to the initial frequency as the center point of the compressor, in accordance with the pre-set frequency range of the frequency of the compressor is adjusted up and down.

Optionally, the working parameter adjusting module is adjusted in the opening of the electronic expansion valve comprises: to the effective energy efficiency data in the 1st 1st electronic expansion valve opening as the center point, in accordance with the opening degree of the pre-set upper and lower adjusting the opening degree of the electronic expansion valve.

The invention provides the air conditioner efficiency relative to the prior art automatic control system with the above-mentioned air conditioner energy efficiency advantage of automatic control method for the same relative to the advantage of the prior art, not repeat them here.

The invention also provides an air conditioner including the air conditioner energy efficiency automatic control system.

The invention provides a technical advantage of relative to the existing air conditioner with the above-mentioned air conditioner energy efficiency automatic control system relative to the existing technical advantage of the same, not repeat them here.

Description of drawings

Figure 1 is in this invention an air-conditioning energy efficiency automatic control method flow chart;

Figure 2 is the invention provides a control system block diagram of the automatic air conditioner efficiency.

The Figure mark note:

1 - Parameter setting module, 2 - air-suction superheat degree adjusting module, 3 - work parameter adjusting module, 4 - effective energy efficiency data determination module.

Mode of execution

For the purpose of the invention, features and advantages can be more clear and easy to understand, the Figure below the specific implementation of the present invention detailed explanation.

In the prior art, domestic air conditioning energy efficiency test of the different criteria, such as the European energy efficiency test is composed of a plurality of different working conditions different load test results. However in different conditions, under different load need manual debugging, uncertainty more, efficiency is low, a long time is not accurate.

According to the present invention one embodiment of air conditioner efficiency of automatic control method, comprising the following steps:

Step S1, in the current condition, obtaining said current operating condition corresponding to the current opening degree of the electronic expansion valve, the opening degree of the electronic expansion valve is fixed at the current opening degree, the frequency of the compressor is adjusted, by the 1st effective energy efficiency data and its corresponding to the frequency of the compressor 1st, the 1st effective energy efficiency data for the current operating condition and the 1st compressor frequency of optimal energy efficiency data;

Step S2, so that the compressor works at said 1st compressor frequency, and adjusting the opening degree of the electronic expansion valve, to obtain 2nd effective energy efficiency data and its corresponding to the opening degree of the electronic expansion valve 2nd, the 2nd energy efficiency data for the current operating condition and the 2nd electronic expansion valve opening under the optimum energy efficiency data;

Step S3, in the different measured condition, repeat steps S1 - S2, obtained under different working conditions of the 2nd effective energy efficiency data;

Step S4, according to the step S3 in the 2nd under different working conditions of effective energy efficiency data integrated computing, realize the automatic control of the air conditioner efficiency.

Therefore, this embodiment can automatically adjust the air-conditioning unit in different conditions under different load and calculating the energy efficiency of the air conditioner, to reduce the manual waste, and short time, improving the working efficiency, result is more accurate.

In this embodiment, carrying out a step S1 before, also includes

Step S01, based on the present operating condition of the compressor load requirements of the initial frequency.

In particular, specifications of the reference compressor, the condensing temperature and the air conditioning unit on the basis of the evaporation temperature, the compressor and the output of the initial frequency of the ability value;

In this embodiment, obtaining the current working condition corresponding to the current opening degree of the electronic expansion valve, comprising: according to the real-time feedback of the air-suction superheat degree of the electronic expansion valve to adjust the initial opening, to obtain the current opening degree of the electronic expansion valve.

Specifically, by the indoor electronic expansion of opening of the air-suction superheat degree SH decision:

TSH_COOLING=T2 - T1 - SHS_COOLING, wherein TSH_COOLING said that the superheat of the indoor machine, T2 expressed in the respective tube temperature, T1 indicates the temperature of the indoor machine is thin, the degree of superheat of SHS_COOLING said correction value.

In order to drag a machine type refrigeration mode as an example:

T2=T suction; T1=T the inner

And according to the temperature of the exhaust SHS_COOLING determined, as follows: (T row 2 °C update)

When the T exhaust ≥ 95 °C when, SHS_COOLING=0

When the 85 °C ≤ T exhaust<95 °C when, SHS_COOLING=1

When the 70 °C ≤ T exhaust<85 °C when, SHS_COOLING=2

When the T exhaust<70 °C when, SHS_COOLING=3

When all of the indoor machine by calculating the degree of superheat obtained after TSH_COOLING, according to table 1, the corresponding adjustment of the opening degree of the electronic expansion valve. Table 1 TSH in indicating the current of the air conditioning unit the current superheat, Δ TSH representation of the current of the air conditioning unit with a seconds on the superheat of the air conditioning unit the difference of superheat, for example when the current TSH ≤ - 5, ΔTSH≤ - 3, corresponding to the opening degree of the electronic expansion valve is reduced, for example when the current TSH ≤ 3, Δ TSH ≤ 2, the corresponding increase in the opening degree of the electronic expansion valve.

Table 1 superheat adjustment table

In this embodiment, steps S1 in the frequency of the compressor is adjusted includes with the initial frequency as the center point of the compressor, in accordance with the pre-set frequency range of the frequency of the compressor is adjusted up and down, wherein the pre-set frequency range is in the center of the initial frequency - 5HZ to + 5 HZ within the range of the neighborhood, because the frequency of the compressor impact the ability of the unit air conditioner, in the above-mentioned preset range can be ensured in the reliability of the air conditioning unit.

In some embodiments, the frequency of the compressor is adjusted to the comprises a first initial frequency as the center point of the compressor, frequency of the compressor to increase the speed of the 1HZ/10min upward, because of frequency increase caused by the increase of capacity, the upper limit for the capacity of 5%, the increase is stopped, to increase the upper frequency limit is + 5 HZ, recording capacity and power, so as to obtain corresponding energy efficiency data, the unit efficiency comparison of the data automatically, with the highest energy efficiency optimal 1st set of energy efficiency data; and then to the compressor as the center point of the initial frequency, frequency of the compressor to reduce the rate of 1HZ/10min downward, due to frequency drops to cause the decline in the ability of, the lower limit for the capacity of 5%, frequency stop declining, reduce the lower frequency limit is - 5HZ, recording capacity and power, obtain corresponding energy efficiency data, the unit efficiency comparison of the data automatically, with the highest energy efficiency optimal 2nd group of energy efficiency data; the optimum of efficiency of the 1st group data to the optimum of efficiency data comparing the 2nd group, with the highest energy efficiency 1st effective energy efficiency data and corresponding to the frequency of the compressor 1st, here the effective energy efficiency data includes 1st 1st 1st compressor frequency and the opening degree of the electronic expansion valve.

In this embodiment, steps S2 and adjust the opening degree of the electronic expansion valve comprises a to the 1st 1st effective energy efficiency data in the electronic expansion valve opening as the center point, in accordance with the opening degree of the pre-set upper and lower adjusting the opening degree of the electronic expansion valve. The pre-set opening enabling said electronic expansion valve in the air-suction superheat degree 1 °C to 3 °C range. The opening degree of the electronic expansion valve of the influence of the capacity of the air conditioning unit, and the electronic expansion valve the opening of the decision by the air-suction superheat degree, therefore when the air-suction superheat degree can be ensured in the above-mentioned within the scope of the reliability of the air conditioning unit.

In this embodiment, step S4 in accordance with step S3 in the 2nd under different working conditions of effective energy efficiency data integrated computing, realize the automatic control of the air conditioner efficiency, including the under different working conditions of the 2nd effective energy efficiency data storage, when the air-conditioning unit need to stored under different working conditions while running under any operating condition, the current condition of the function of the operational parameters of the fitting, causing the air conditioner to the ultimate in order to store the corresponding condition of the operating condition parameter operation, in order to realize the automatic control of the air conditioner efficiency.

Now in order to 10 kw set four working condition as an example detailed description in this embodiment the efficiency of the automatic control method.

The requirements of the working A capacity of 100%, the need to meet the 10 kw; the requirements of the working capacity of the B 73.68%, the need to meet 7.368 kw; the requirements of the working capacity of the C 47.37%, the need to meet 4.737 kw; the requirements of the working capacity of the D 21.05%, the need to meet 2.105 kw.

Step S01, under the working condition in the A, through the compression selection displacement of 31 cc of compressor capacity, the National standard working condition when setting the condensing temperature of 42 °C, evaporation temperature 2.7 °C, corresponding to the frequency of the compressor is obtained 60 HZ; capacity of 10010 W;

Step S02, according to the air-suction superheat degree adjust the initial electronic opening of the expansion valve, and to obtain current electronic opening of the expansion valve;

Step S1, under the working condition in the A and ensure that the present electronic expansion valve on the basis of the opening degree does not change, the frequency of the compressor from the first 60 HZ upward increase frequency 1HZ/10min, because of frequency increase caused by the increase of capacity, the upper limit for the capacity of 5%, the increase is stopped, to increase the upper frequency limit is + 5 HZ; recording capacity and power, so as to obtain energy efficiency data, for energy efficiency data carries out an automatic comparison, to obtain the optimal 1st set of energy efficiency data; A condition and guarantee in current electronic expansion valve opening does not change on the basis of the, frequency of the compressor from the first 60 HZ downwardly decreasing frequency 1HZ/10min, due to frequency drops to cause the decline in the ability of, the lower limit for the capacity of 5%, frequency stop declining, decreasing the frequency the lower limit is - 5HZ; recording capacity and power, so as to obtain energy efficiency data, for energy efficiency data carries out an automatic comparison, to obtain the optimal 2nd group of energy efficiency data; the optimum of the 1st group of energy efficiency data and the optimal 2nd group of energy efficiency data is compared, by the 1st effective energy efficiency data, here the effective energy efficiency data includes 1st 1st 1st compressor frequency and the opening degree of the electronic expansion valve.

Step S2, in ensuring the effective energy efficiency data in the 1st 1st on the basis of not changing the frequency of the compressor, to the first 1st 1st effective energy efficiency data in the electronic expansion valve opening as the center point of increase upwards, in particular to make the air-suction superheat degree increments of 1 °C, the upper limit of the air-suction superheat degree is 3, recording capacity and power, so as to obtain corresponding energy efficiency data, the unit efficiency data carries out an automatic comparison, to obtain the optimal efficiency of the 1st group data; and then to the 1st 1st effective energy efficiency data in the electronic expansion valve opening as the center point of downward to reduce, in particular to make the air-suction superheat degree is reduced each time 1 °C, the lower limit of the air-suction superheat degree is 3, recording capacity and power, so as to obtain corresponding energy efficiency data, the unit efficiency data carries out an automatic comparison, to obtain the optimal 2nd group of energy efficiency data; the optimum of efficiency of the 1st group data to the optimum of efficiency data comparing the 2nd group, to obtain 2nd effective energy efficiency data. The opening degree of the electronic expansion valve of the influence of the capacity of the air conditioning unit, and the electronic expansion valve the opening of the decision by the air-suction superheat degree, therefore when the air-suction superheat degree can be ensured in the above-mentioned within the scope of the reliability of the air conditioning unit.

Step S3, according to step S1 - S2, to obtain the working condition of the B, C working condition, D under the operating condition of the 2nd effective energy efficiency data;

Step S4, step S3 in four different working conditions of said 2nd effective energy efficiency data for data storage, when the need to make the air conditioner in any one of the four working condition of the working conditions, the current condition of the function of the operational parameters of the fitting, causing the air conditioner to the ultimate in order to store the corresponding condition of the operating condition parameter operation, in order to realize the automatic control of the air conditioner efficiency.

To realize automatic control of the air conditioner efficiency.

Therefore, compared with the prior art, this embodiment is provided by way of a kind of air conditioner efficiency automatic control method can automatically adjust the air-conditioning unit in different conditions under different load and calculating the energy efficiency of the air conditioner, to reduce the manual waste, and short time, improving the working efficiency, result is more accurate.

Another object of the invention is characterized in that the embodiment also provides an air conditioner energy efficiency automatic control system, a communication connection in sequence of the parameter setting module 1, air-suction superheat degree control module 2, the work parameter adjusting module 3 and effective energy efficiency data determining module 4, wherein the parameter setting module 1, is used for setting the different requirements of the working parameter; air-suction superheat degree adjusting module 2, for according to the real-time feedback of the air-suction superheat degree, to adjust the current opening degree of the electronic expansion valve, so that the current air-suction superheat degree at the preset air-suction superheat degree interval; adjusting work parameter module 3, is used for adjusting the frequency of the compressor and the opening degree of the electronic expansion valve, in order to obtain the energy efficiency data; effective energy efficiency data determining module 4, is used to compare the efficiency data, numerical value data to determine the optimal energy efficiency for the effective energy efficiency data.

In this embodiment the working parameter adjustment module in the frequency of the compressor is adjusted includes with the initial frequency as the center point of the compressor, in accordance with the pre-set frequency range of the frequency of the compressor is adjusted up and down. Specifically, first to the initial frequency as the center point of the compressor, frequency of the compressor to increase the speed of the 1HZ/10min upward, because of frequency increase caused by the increase of capacity, the upper limit for the capacity of 5%, the increase is stopped, to increase the upper frequency limit is + 5 HZ, recording capacity and power, so as to obtain corresponding energy efficiency data, the unit efficiency comparison of the data automatically, with the highest energy efficiency optimal 1st set of energy efficiency data; and then to the initial frequency as the center point of the compressor, frequency of the compressor to reduce the rate of downward 1HZ/10min, due to frequency drops to cause the decline in the ability of, the lower limit for the capacity of 5%, frequency stop declining, reduce the lower frequency limit is - 5HZ, recording capacity and power, obtain corresponding energy efficiency data, the unit efficiency comparison of the data automatically, with the highest energy efficiency optimal 2nd group of energy efficiency data; the optimum of efficiency of the 1st group data to the optimum of efficiency data comparing the 2nd group, with the highest energy efficiency 1st effective energy efficiency data.

In this embodiment the working parameter adjustment module to adjust the opening degree of the electronic expansion valve comprises a to the 1st 1st effective energy efficiency data in the electronic expansion valve opening as the center point, in accordance with the adjustment of the preset the opening range of the opening degree of the electronic expansion valve. Specifically, first to the 1st 1st effective energy efficiency data in the electronic expansion valve opening as the center point of increase upwards, in particular to make the air-suction superheat degree increments of 1 °C, the upper limit of the air-suction superheat degree is 3, recording capacity and power, so as to obtain corresponding energy efficiency data, the unit efficiency data carries out an automatic comparison, to obtain the optimal 1st set of energy efficiency data; and then to the 1st 1st effective energy efficiency data in the electronic expansion valve opening as the center point of downward to reduce, in particular to make the air-suction superheat degree is reduced each time 1 °C, the lower limit of the air-suction superheat degree is 3, recording capacity and power, so as to obtain corresponding energy efficiency data, the unit efficiency data carries out an automatic comparison, to obtain the optimal 2nd group of energy efficiency data; the optimum of efficiency of the 1st group data to the optimum of efficiency data comparing the 2nd group, to obtain 2nd effective energy efficiency data.

This embodiment is provided by way of a kind of air conditioner efficiency automatic control system can automatically adjust the air-conditioning unit in different conditions under different load and calculating the energy efficiency of the air conditioner, to reduce the manual waste, and short time, improving the working efficiency, result is more accurate.

Another aspect of the invention embodiment provides an air conditioner, includes the above-mentioned embodiment of the air conditioner efficiency in automatic control system, which can automatically adjust the air-conditioning unit in different conditions under different load and calculating the energy efficiency of the air conditioner, to reduce the manual waste, and short time, improving the working efficiency, result is more accurate.

Although the invention disclosure as above, but the invention is not limited to this. Any technical personnel in the field, in the without departing from the spirit of this invention and within the scope, various changes can be made with the modified, therefore the scope of protection of this invention should be defined by the scope of the claims of the subject.