WO2018188521A1 - Air conditioner heating operation control method - Google Patents

Abstract

Disclosed is an air conditioner heating operation control method, comprising: acquiring an actual heating capacity of an air conditioner operation and an actual temperature change of the room where the air conditioner is located, in a set time period (11); determining, according to the actual heating capacity, a reference temperature change corresponding to the actual heating capacity (12); and determining target parameters according to a comparison result of the actual temperature change and the reference temperature change corresponding to the actual heating capacity, and controlling the air conditioner such that same operates according to the target parameters (13), wherein the actual heating capacity is determined according to a real-time compressor frequency, a real-time indoor temperature, a real-time outdoor temperature, a real-time internal unit rotation speed, a real-time external unit rotation speed and a real-time operation power. By applying the method, the control performance of an air conditioner can be improved.

Description

Air conditioner heating operation control method Technical field

The invention belongs to the technical field of air conditioning, and in particular relates to a heating operation control method for an air conditioner.

Background technique

When the air conditioner is working, it operates according to the target parameters, and adjusts the room temperature and humidity to make the room environment meet the comfort requirements.

For the parameter value of the target parameter of the air conditioner, one case is the system recommended parameter value placed in the air conditioner, or the parameter value calculated according to the system recommended parameter value; the other case is the parameter value set by the user. Or the parameter value calculated based on the parameter value set by the user. For the first case, if the parameter value is the system recommended parameter value or the parameter value calculated according to the system recommended parameter value, the system recommended parameter value is generally a suitable value in the experimental environment and standard conditions. However, when the air conditioner is actually used, the condition changes, and almost all of them are not standard conditions. Therefore, the system recommended parameter value is not necessarily a suitable value, and the room environment comfort obtained based on the recommended parameter value of the system is poor. For the second case, if the parameter value is set by the user or calculated according to the user's setting, since the user generally does not understand the performance of the air conditioner and the matching use environment, there are often different air conditioners due to environmental conditions. The target parameters cannot be reached, resulting in poor room environment comfort; or the air conditioner cannot reach the target parameters more reasonably, resulting in poor performance of the air conditioner.

technical problem

An object of the present invention is to provide a method for controlling the heating operation of an air conditioner, which determines a target parameter based on actual heat generation during operation of the air conditioner, and improves control performance of the air conditioner.

Technical solution

In order to achieve the above object, the present invention is implemented by the following technical solutions:

An air conditioner heating operation control method, the method comprising:

Obtaining the actual heating capacity of the air conditioner operating during the set time period and the actual temperature change of the room where the air conditioner is located during the set time period;

Determining a reference temperature change corresponding to the actual heating amount according to the actual heating capacity and a corresponding relationship between the known heating amount and the reference temperature change;

Determining a target parameter according to a comparison result of the actual temperature change and a reference temperature change corresponding to the actual heating amount, and controlling the air conditioner to operate according to the target parameter;

The obtaining the actual heating capacity of the air conditioner running during the set time period comprises: obtaining the real-time press frequency f, the real-time indoor temperature tn, the real-time outdoor temperature tw, and the real-time internal machine speed nn within the set time period. , real-time external machine speed nw and real-time running power P;

Determining a real-time core energy efficiency ratio COPc corresponding to the real-time press frequency f and the real-time indoor temperature tn according to a known core energy efficiency ratio reference table; the core energy efficiency ratio reference table includes a plurality of reference indoor temperatures and a plurality of The core energy efficiency ratio reference value corresponding to the reference press frequency;

Determining a real-time outdoor temperature energy efficiency ratio correction factor COPtw according to the real-time outdoor temperature tw and the rated outdoor temperature Tw, determining a real-time internal engine speed energy efficiency ratio correction factor COPnn according to the real-time internal machine speed nn and the rated internal machine speed Nn, according to the The real-time external machine speed nw and the rated external machine speed Nw determine the real-time external machine speed energy efficiency ratio correction factor COPnw;

Determine real-time heating energy efficiency ratio COPs:

COPs=[(COPc/COPcr)*d+e]*COPsr+COPtw+COPnn+COPnw;

COPcr is the rated core energy efficiency ratio corresponding to the rated press frequency fr and the rated indoor temperature tnr determined according to the core energy efficiency ratio reference table; COPsr is the nominal heating energy efficiency ratio of the air conditioner; d and e are correction coefficients;

Determine the real-time heating capacity W: W = COPs * P;

All real-time heat generation in the set time period is accumulated to obtain actual heat generation for the set time period.

Beneficial effect

Compared with the prior art, the advantages and positive effects of the present invention are: the air conditioning heating operation control method provided by the present invention obtains the actual heating capacity of the air conditioner during operation and the actual temperature change of the room where the air conditioner is located, and then according to the known Corresponding relationship between the heating capacity and the reference temperature change determines the reference temperature change corresponding to the actual heating capacity, and then determines the target parameter of the air conditioner operation according to the comparison result of the actual temperature change and the reference temperature change corresponding to the actual heating amount, and realizes the air conditioning according to the air conditioner The actual heating capacity during operation and the actual temperature change of the room dynamically adjust the target parameters of the operation of the air conditioner, and the actual heating capacity and the actual temperature change of the room reflect the real-time operating capacity of the air conditioner and the real-time temperature condition that characterizes the comfort of the room. The target parameters determined based on the actual heating capacity and the actual temperature change of the room are more in line with the operating capacity of the air conditioner and the comfort of the room. Therefore, controlling the operation of the air conditioner with the target parameter not only improves the comfort of the room, but also enhances the air conditioner. Running performance.

Moreover, the real-time core energy efficiency ratio corresponding to the real-time press frequency and the real-time indoor temperature, which have a great influence on the heating energy efficiency ratio, is determined by a core energy efficiency ratio reference table including a plurality of known core energy efficiency ratio reference values, and then based on real-time The outdoor temperature, the real-time internal machine speed and the real-time external machine speed determine the energy efficiency ratio correction factor that has less influence on the heating energy efficiency ratio, and then determine the real-time heating energy efficiency ratio based on the real-time core energy efficiency ratio and multiple energy efficiency ratio correction factors. According to the real-time heating energy efficiency ratio and the real-time operating power, the actual heating capacity is determined, and the actual heating result is accurate, which is in line with the actual operating conditions.

Other features and advantages of the present invention will become apparent from the Detailed Description of the Drawing.

DRAWINGS

1 is a flow chart showing an embodiment of an air conditioner heating operation control method based on the present invention;

Figure 2 is a flow chart for determining the actual heat generation in Figure 1.

BEST MODE FOR CARRYING OUT THE INVENTION

The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

Referring to Fig. 1, there is shown a flow chart of an embodiment of a heating operation control method for an air conditioner based on the present invention.

As shown in FIG. 1, the method for implementing the air conditioner heating operation control of this embodiment includes the following steps:

Step 11: Obtain the actual heating capacity of the air conditioner running during the set time period and the actual temperature change of the room where the air conditioner is located within the set time period.

The set time period is a preset time value, for example, 1 hour. The actual heating capacity refers to the total amount of heat supplied to the room where the air conditioner is located during the set time period when the air conditioner is running. The actual heating capacity reflects the heating capacity of the air conditioner in the current environment. For the method of obtaining the actual heat generation, please refer to the flow chart of FIG. 2 and the detailed description of FIG. 2 below.

At the same time, the actual temperature change of the room where the air conditioner is located during the set time period is also obtained, and the actual temperature change reflects the comfort of the room where the air conditioner is located under the operation of the air conditioner. Among them, the actual temperature change includes but is not limited to the actual temperature increase value or the actual temperature increase rate. For example, during heating operation, the actual temperature change is the actual temperature rise value, which refers to the rise of the room temperature during the set time period, which can be obtained by obtaining the room temperature and setting at the beginning of the set time period. The room temperature at the end of the time period is calculated by the difference between the room temperature at the end of the set time period and the room temperature at the beginning of the set time period. The difference is the rise in the room temperature, that is, the actual temperature change.

Step 12: Determine the reference temperature change corresponding to the actual heating capacity.

Specifically, the reference temperature change corresponding to the actual heating capacity is determined according to the actual heating capacity obtained in step 11 and the corresponding relationship between the known heating amount and the reference temperature change.

The correspondence between the heat generation and the reference temperature change is stored in advance and can be easily read by the controller of the air conditioner. Preferably, the correspondence between the heat generation and the reference temperature change is obtained experimentally, stored in a table form in the controller of the air conditioner, or stored in the cloud server. Moreover, in the experimental acquisition, the air conditioner is placed in a standard room where the room area, the room height, and the room heat dissipation coefficient are standard values, and the air conditioner is controlled to continue to operate for a certain period of time, and the total amount of heat in the time is obtained and the time is obtained. Corresponding room temperature changes, the room temperature change is taken as the reference temperature change corresponding to the heating capacity, and a correspondence relationship between the heating amount and the reference temperature change is formed and stored in the table. Corresponding relationships of multiple heating core reference temperature changes in different time periods are sequentially obtained, and all correspondences form a complete table for storage. Then, after obtaining the actual heating capacity in step 11, the heat quantity of the same or the closest heat quantity to the actual heat quantity is inquired in the table, and the corresponding reference temperature change is determined as the reference temperature change corresponding to the actual heat quantity. Alternatively, it is also possible to determine the two heating amounts in the table before and after the actual heat generation and the reference temperature changes corresponding to the two heating amounts, according to a linear interpolation method or an averaging method or other methods. The reference temperature change corresponding to the actual heat production.

Step 13: Determine the target parameter according to the comparison result of the actual temperature change and the reference temperature change corresponding to the actual heating capacity, and control the air conditioner to operate according to the target parameter.

The target parameter is all possible target parameters of the air conditioner running, including but not limited to the target temperature, target frequency, target capability operating parameters, and the like.

The above method is used to control the heating operation of the air conditioner, and the target parameters of the air conditioner operation are dynamically adjusted according to the actual heating capacity of the air conditioner and the actual temperature change of the room, and the actual air conditioning and the actual temperature change of the room reflect the air conditioner in real time. The operating capacity of the device and the real-time temperature condition that characterizes the comfort of the room. Therefore, the target parameters determined based on the actual heating capacity and the actual temperature change of the room are more in line with the operating capacity of the air conditioner and the comfort of the room. Therefore, the air conditioning is controlled by the target parameter. When the device is running, not only the comfort of the room is improved, but also the running performance of the air conditioner can be improved. The specific target parameters are determined and the technical effects produced are detailed as follows:

Step 13 determines the target parameters, including determining the target temperature, that is, determining the temperature that the desired room can reach. If the actual temperature change is the actual temperature increase value or the actual temperature increase rate when the air conditioner is running, the corresponding relationship between the heat generation and the reference temperature change is the correspondence between the heating amount and the reference temperature increase value or the reference temperature increase rate. Relationship Then, the target temperature is determined according to the comparison result of the reference temperature change corresponding to the actual temperature change and the actual heating amount, and specifically includes:

The air conditioning heating operation compares the actual temperature change with the reference temperature change corresponding to the actual heating capacity, specifically calculating the ratio of the two. Then, the target temperature is determined according to the magnitude relationship between the ratio and the threshold.

If the ratio of the actual temperature change to the reference temperature change corresponding to the actual heat generation is greater than the first threshold, the target temperature is lowered, and the reduced target temperature is determined as the target parameter. Lowering the target temperature means reducing the current target temperature. Wherein, the first threshold is a known value greater than one. As a preferred embodiment, the first threshold is 1.2. If the ratio of the actual temperature change to the reference temperature change corresponding to the actual heat generation is greater than the first threshold, that is, greater than 1, it indicates that the actual temperature change is greater than the reference temperature change corresponding to the actual heat generation. In this case, it is determined that the temperature in the room is heating up too fast during the heating process, and the excessively rapid temperature rise is likely to affect the comfort of the room due to the temperature shutdown. Therefore, in this case, the target temperature is lowered so that the difference between the target temperature and the room temperature becomes smaller. Then, when the temperature control is performed based on the difference between the target temperature and the room temperature, the indoor heating rate can be slowed down, and the cause can be avoided. The temperature rises too fast and the room is uncomfortable. At the same time, due to the lower target temperature, it can also reduce the operating energy consumption, heating capacity and running noise of the air conditioner, and improve the running performance of the air conditioner.

If the ratio of the actual temperature change to the reference temperature change corresponding to the actual heat generation is less than the second threshold, the target temperature is raised, and the raised target temperature is determined as the target parameter. Increasing the target temperature means increasing the current target temperature. Wherein, the second threshold is a value that is known to be less than one. As a preferred embodiment, the second threshold is 0.8. If the ratio of the actual temperature change to the reference temperature change corresponding to the actual heat generation is less than the second threshold, that is, less than 1, it indicates that the actual temperature change is smaller than the reference temperature change corresponding to the actual heat generation. In this case, it is determined that during the heating process, the temperature in the room is too slow, and the too slow heating process makes the room temperature not reach the required comfort temperature as soon as possible, which affects the comfort of the room. Therefore, in this case, the target temperature is raised so that the difference between the target temperature and the room temperature becomes larger, and then, when the temperature control is performed based on the difference between the target temperature and the room temperature, the indoor heating rate can be accelerated. Avoid uncomfortable rooms due to slow heating.

In other preferred embodiments, the heating minimum target temperature and the heating maximum target temperature are also pre-set. During the heating operation of the air conditioner, if the target temperature after the reduction is less than the minimum target temperature for heating, the minimum target temperature for heating is determined as the target parameter; if the target temperature after the increase is greater than the maximum target temperature for heating, The maximum heat target temperature is determined as the target parameter.

In some other more preferred embodiments, the following process is also included:

During the heating operation of the air conditioner, if the target temperature after the lowering is lower than the minimum target temperature for heating, a reminder that the room area is too small is issued; if the target temperature after the rise is greater than the maximum target temperature for heating, a reminder that the room area is too large is issued. If the target temperature after the reduction is less than the minimum target temperature for heating, it indicates that the temperature rise rate is faster when the target temperature is lower than the minimum target temperature for heating, and at this time, it is most likely because of the rated heat capacity of the air conditioner. If the room size is too small, that is, if an air conditioner with too much heat is installed, a reminder that the room area is too small is issued to provide a reference for replacing the air conditioner. If the target temperature after the rise is greater than the maximum target temperature for heating, it indicates that the heating rate is too slow, most likely because the room area is too large relative to the rated heating capacity of the air conditioner, that is, the air conditioner with too small heat is installed. If it is difficult or impossible to reach the target temperature under the current working conditions, it will give a reminder that the room area is too large, so as to provide a reference for whether to replace the air conditioner.

In addition, step 13 determines the target parameters, and further includes determining the target frequency, that is, controlling the target frequency of the air conditioner compressor operation. If the actual temperature change is the actual temperature increase value or the actual temperature increase rate when the air conditioner is running, the corresponding relationship between the heat generation and the reference temperature change is the correspondence between the heating amount and the reference temperature increase value or the reference temperature increase rate. Relationship, then, the target frequency is determined according to the comparison result of the reference temperature change corresponding to the actual temperature change and the actual heating amount, specifically including:

The air conditioning heating operation first compares the actual temperature change with the reference temperature change corresponding to the actual heating capacity, specifically calculating the ratio of the two. Then, the target frequency is determined according to the magnitude relationship between the ratio and the threshold.

If the ratio of the actual temperature change to the reference temperature change corresponding to the actual heating capacity is greater than the third threshold, the target frequency is lowered, and the reduced target frequency is determined as the target parameter. Reducing the target frequency means reducing the current target frequency, and the current target frequency may be a frequency value obtained according to a conventional method. Wherein, the third threshold is a known value greater than one. As a preferred embodiment, the third threshold is 1.2. If the ratio of the actual temperature change to the reference temperature change corresponding to the actual heat generation is greater than the first threshold, that is, greater than 1, it indicates that the actual temperature change is greater than the reference temperature change corresponding to the actual heat generation. In this case, it is determined that the temperature in the room is heating up too fast during the heating process, and the excessively rapid temperature rise is likely to affect the comfort of the room due to the temperature shutdown. Therefore, in this case, the target frequency is lowered, so that the air conditioner compressor is down-converted, the indoor heating rate can be slowed down, and the room is uncomfortable due to excessive temperature rise. At the same time, due to the lower target frequency, it can also reduce the operating energy consumption, heating capacity and running noise of the air conditioner, and improve the running performance of the air conditioner.

If the ratio of the actual temperature change to the reference temperature change corresponding to the actual heating capacity is less than the fourth threshold, the target frequency is raised, and the raised target frequency is determined as the target parameter. Raising the target frequency means increasing the current target frequency. Wherein, the fourth threshold is a value that is known to be less than one. As a preferred embodiment, the fourth threshold is 0.8. If the ratio of the actual temperature change to the reference temperature change corresponding to the actual heat generation is less than the fourth threshold, that is, less than 1, it indicates that the actual temperature change is smaller than the reference temperature change corresponding to the actual heat generation. In this case, it is determined that during the heating process, the temperature in the room is too slow, and the too slow heating process makes the room temperature not reach the required comfort temperature as soon as possible, which affects the comfort of the room. Therefore, in this case, the target frequency will be raised, so that the air conditioner compressor is up-converted, and the indoor heating rate can be accelerated to avoid the room being uncomfortable due to the slow temperature rise.

Step 13 determines a target parameter and further includes determining a target capability operational parameter. In order to increase the compatibility of the air conditioner to the use environment, some air conditioners are preset with multiple sets of capability operating parameters. For example, two sets of capability operating parameters are preset, which are small capacity operating parameters and large capacity operating parameters. Different capability operating parameters correspond to different frequency control strategies, wind speed control strategies, expansion valve opening control strategies, and different rated heating capacities. If the actual temperature change is the actual temperature increase value or the actual temperature increase rate when the air conditioner is running, the corresponding relationship between the heat generation and the reference temperature change is the correspondence between the heating amount and the reference temperature increase value or the reference temperature increase rate. Relationship, then, according to the comparison result of the actual temperature change and the reference temperature change corresponding to the actual heating capacity, the target capability operating parameter is determined, which specifically includes:

The air conditioning heating operation compares the actual temperature change with the reference temperature change corresponding to the actual heating capacity, specifically calculating the ratio of the two. Then, the target capability operating parameter is determined according to the magnitude relationship between the ratio and the threshold.

If the ratio of the actual temperature change to the reference temperature change corresponding to the actual heating capacity is greater than the fifth threshold, when the current operating parameter of the air conditioner is a non-small capability operating parameter, the small capability operating parameter is determined as the target parameter; and in the air conditioner When the current running parameter is a small capacity running parameter, a reminder that the room area is too small is issued. Wherein, the fifth threshold is a known value greater than one. As a preferred embodiment, the fifth threshold is 1.2. If the ratio of the actual temperature change to the reference temperature change corresponding to the actual heat generation is greater than the fifth threshold, that is, greater than 1, it indicates that the actual temperature change is greater than the reference temperature change corresponding to the actual heat generation. In this case, it is determined that the temperature in the room is heating up too fast during the heating process, and the excessively rapid temperature rise is likely to affect the comfort of the room due to the temperature shutdown. Therefore, in this case, the small capacity operation parameter is selected as the target capability operation parameter to slow down the indoor heating rate and avoid the room discomfort caused by the excessive temperature rise. If the current running parameter is not a small capacity running parameter, the small capacity running parameter can be directly determined as the target capability running parameter. However, if the current operating parameter is already a small capacity operating parameter, it indicates that the heating rate is faster under the small capacity operating parameter, most likely because the room area is too small relative to the rated heating capacity of the air conditioner, that is, the heating capacity is installed. Excessive air conditioner, and because the operating parameters can no longer be selected, a reminder that the room area is too small is issued to provide a reference for whether to replace the air conditioner.

If the ratio of the actual temperature change to the reference temperature change corresponding to the actual heating capacity is less than the sixth threshold, when the current operating parameter of the air conditioner is a non-large capacity operating parameter, the large capacity operating parameter is determined as the target parameter, currently in the air conditioner. When the operating parameter is a large capacity operation parameter, a reminder that the room area is too large is issued. Wherein, the sixth threshold is a value that is known to be less than one. As a preferred embodiment, the sixth threshold is 0.8. If the ratio of the actual temperature change to the reference temperature change corresponding to the actual heating capacity is less than the sixth threshold, that is, less than 1, it indicates that the actual temperature change is smaller than the reference temperature change corresponding to the actual heating amount. In this case, it is determined that the temperature in the room is heating up too slowly during the heating process, and the too slow heating process makes the room temperature not reach the required comfort temperature as soon as possible, which affects the comfort of the room. Therefore, in this case, the large-capacity operation parameter is selected as the target capability operation parameter to speed up the indoor heating rate and avoid the room discomfort caused by the slow heating. If the current running parameter is not a large capacity running parameter, the large capacity running parameter can be directly determined as the target capability running parameter. However, if the current operating parameters are already large-capacity operating parameters, it indicates that the heating rate is slower under the large-capacity operating parameters, most likely because the room area is too large relative to the rated heating capacity of the air conditioner, that is, the heating capacity is installed. If the air conditioner is too small, and the operating parameters can no longer be selected, a reminder that the room size is too large is issued to provide a reference for whether to replace the air conditioner.

In the air conditioner control process, the target temperature, the target frequency, and the target capability operating parameter may be separately determined according to the comparison result of the actual temperature change and the reference temperature change corresponding to the actual heating capacity, but is not limited thereto, and may be simultaneously determined. Two or three of the target parameters.

Moreover, in other preferred embodiments, the following control process is also included:

When the air conditioner is heating, if the ratio of the actual temperature change to the reference temperature change corresponding to the actual heating capacity is less than the seventh threshold, a reminder to check the airtightness of the room is issued. The seventh threshold is also a known value less than 1, and is smaller than the second threshold, the fourth threshold, and the sixth threshold, for example, the seventh threshold is 0.4. In the air conditioning heating operation, if the ratio of the actual temperature change to the reference temperature change corresponding to the actual heating capacity is less than the seventh threshold, the actual temperature rise is extremely slow. In this case, the room may be poorly sealed, such as opening a window or When the door is opened, a reminder to check the airtightness of the room will be issued to reduce the discomfort caused by the temperature rise caused by the airtightness problem.

Please refer to FIG. 2, which is a flow chart for determining the actual heat generation in FIG.

First, a brief description of the technical ideas for obtaining actual heat production:

The heating capacity of the air conditioner during heating operation can be obtained according to the heating energy efficiency ratio and the operating power. Through theoretical analysis and experimental verification, the factors that have a greater impact on the heating efficiency ratio of air conditioning heating operation are indoor temperature and press frequency, while outdoor temperature, internal machine speed and external machine speed have less influence on heating energy efficiency ratio. . Therefore, in order to simplify the on-line detection process of the heating energy efficiency ratio and ensure the accuracy of the detection, the present application proposes that the heating energy efficiency ratio affected by the real-time indoor temperature and the real-time pressing frequency is taken as the core energy efficiency ratio, and is estimated by using experimental data. The method is determined; the energy efficiency ratio of the factors that have less influence on the heating energy efficiency ratio is determined by correcting according to the real-time value and the rated value. Then, determine the total real-time heating energy efficiency ratio under the influence of all factors. Finally, the actual heating capacity is determined based on the real-time heating energy efficiency ratio.

As shown in FIG. 2, the method for obtaining the actual heat quantity of the air conditioner of the embodiment includes the following steps:

Step 21: During the operation of the air conditioner, obtain the real-time press frequency f, the real-time indoor temperature tn, the real-time outdoor temperature tw, the real-time internal machine speed nn, the real-time external machine speed nw, and the real-time running power P in the set time period.

Since the compressor, the indoor fan and the outdoor fan are all commanded by the air conditioner's main controller for frequency and wind speed control, the real-time press frequency f, the real-time internal machine speed nn and the real-time external machine speed nw can be determined by the air conditioner. The master is easily accessible. The real-time indoor temperature and the real-time outdoor temperature can be detected and acquired by temperature detecting devices provided indoors and outdoors, respectively. The acquisition of the real-time running power P can be implemented by using the prior art, and will not be specifically described herein.

Step 22: Determine the real-time core energy efficiency ratio COPc corresponding to the real-time press frequency f and the real-time indoor temperature tn, determine the real-time outdoor temperature energy efficiency ratio correction factor COPtw, the real-time internal machine speed energy efficiency ratio correction factor COPnn, and the real-time external machine speed energy efficiency ratio correction. Factor COPnw.

Specifically, the real-time core energy efficiency ratio COPc corresponding to the real-time press frequency f and the real-time indoor temperature tn is determined according to the known core energy efficiency ratio reference table. The core energy efficiency ratio reference table includes a core energy efficiency ratio reference value corresponding to a plurality of reference indoor temperatures and a plurality of reference press frequencies, and the core energy efficiency ratio reference table is generally determined by the laboratory before the air conditioner is shipped from the factory and written to the air conditioner. A table in the memory, a specific example is shown in Table 1.

[Correct according to Rule 91 27.04.2018]
Table 1 Core Energy Efficiency Ratio Benchmark

In the core energy efficiency ratio reference table shown in Table 1 above, there are five reference indoor temperatures, 15 ° C, 20 ° C, 25 ° C, 30 ° C and 35 ° C, respectively, and also includes nine reference press frequencies, respectively It is 20hz, 30hz, 40hz, 50hz, 60hz, 70hz, 80hz, 90hz, 100hz. A table of 9 rows and 5 columns is formed for each reference press frequency line, and each reference room temperature is a column. Each reference press frequency and each reference room temperature respectively correspond to a core energy efficiency ratio reference value. There are a total of 45 core energy efficiency ratio benchmark values (the core energy efficiency ratio in the table is a value that is magnified 100 times), and these benchmark values form the table contents. Taking the core energy efficiency ratio reference value 704 corresponding to the reference indoor temperature of 15 ° C and the reference press frequency of 20 hz as an example, a brief description of the acquisition method of the core energy efficiency ratio reference table is given:

In a certain experimental environment, the control room temperature is 15 °C, the press operating frequency is 20hz, and the outdoor temperature, internal machine speed and external machine speed are rated values (corresponding to the determined air conditioner, the rated value is determined, Then, test the heating capacity and power of the air conditioner, and determine the energy efficiency ratio of 7.04, 100 times magnification according to the ratio of heat and power, and the core energy efficiency ratio corresponding to the indoor temperature of 15 ° C and the press frequency of 20 hz. Reference value. The laboratory tests equipment and methods for heating and power using prior art techniques.

Using the above method, the core energy efficiency ratio reference value corresponding to the reference indoor temperature and the reference press frequency is sequentially obtained, and all the reference indoor temperature, the reference press frequency, and the core energy efficiency ratio reference value constitute Table 1 and are written into the air conditioner memory. .

The core energy efficiency ratio reference table has a limited number of reference room temperatures and reference press frequencies that do not cover all actual room temperatures and actual press operating frequencies. During the use of the air conditioner, the real-time core energy efficiency ratio COPc corresponding to the real-time press frequency f and the real-time indoor temperature tn will be determined according to the above-mentioned core energy efficiency ratio reference table.

For example, the real-time core energy efficiency ratio COPc corresponding to the real-time press frequency f and the real-time indoor temperature tn is determined according to the above-mentioned core energy efficiency ratio reference table, and specifically includes:

Determine the two benchmark press frequencies f1 and f2 adjacent to the real-time press frequency f in the core energy efficiency ratio reference table, and determine the two benchmarks in the core energy efficiency ratio reference table that are adjacent to the real-time indoor temperature tn. Indoor temperatures tn1 and tn2.

The core energy efficiency reference value A corresponding to the reference press frequency f1 and the reference indoor temperature tn2, the core energy efficiency reference value B corresponding to the reference press frequency f1 and the reference indoor temperature tn1, and the reference pressure are respectively obtained from the core energy efficiency ratio reference table. The core energy efficiency reference value C corresponding to the machine frequency f2 and the reference indoor temperature tn1, and the core energy efficiency reference value D corresponding to the reference press frequency f2 and the reference indoor temperature tn2.

The real-time core energy efficiency ratio COPc corresponding to the real-time press frequency f and the real-time indoor temperature tn is determined according to the core energy efficiency reference value A, the core energy efficiency reference value B, the core energy efficiency reference value C, and the core energy efficiency reference value D.

The real-time core energy efficiency ratio COPc is determined based on the four core energy efficiency benchmarks A, B, C, and D, which can be implemented in a variety of different ways. As a preferred embodiment, the real-time energy efficiency ratio COPc can be determined using an average value method or a bilinear interpolation method.

The average method specifically includes: calculating an average value of the core energy efficiency reference value A, the core energy efficiency reference value B, the core energy efficiency reference value C, and the core energy efficiency reference value D, and determining the average value as the real-time press frequency f and the real-time indoor temperature tn. Corresponding real-time core energy efficiency ratio COPc.

The algorithm and specific implementation of the bilinear interpolation method can refer to the prior art, and will not be elaborated here.

For example, the real-time press frequency is 77hz and the real-time indoor temperature tn is 27°C. Then, the two reference press frequencies adjacent to the real-time press frequency are f1=70hz, f2=80hz; and the two reference indoor temperatures adjacent to the real-time indoor temperature are tn1=25°C and tn2=30°C. Correspondingly, the four core energy efficiency benchmark values are: A=310, B=349, C=311, D=290. Then, according to the average method, the average of the four core energy efficiency benchmark values calculated is 315; after 100 times reduction, the real-time core energy efficiency ratio COPc=3.15.

As a special case, if the real-time indoor temperature tn is smaller than the minimum reference indoor temperature in the core energy efficiency ratio reference table, the real-time indoor temperature tn is the minimum reference indoor temperature processing; if the real-time indoor temperature tn is greater than the maximum reference indoor in the core energy efficiency ratio reference table The temperature is processed according to the real-time indoor temperature tn as the maximum reference indoor temperature. For frequency, it is also handled in a similar manner.

In addition, it is also necessary to determine the real-time outdoor temperature energy efficiency ratio correction factor COPtw, the real-time internal engine speed energy efficiency ratio correction factor COPnn, and the real-time external motor speed energy efficiency ratio correction factor COPnw. specific:

The real-time outdoor temperature energy efficiency ratio correction factor COPtw is determined according to the real-time outdoor temperature tw and the rated outdoor temperature Tw. As a preferred embodiment, the real-time outdoor temperature energy efficiency ratio correction factor COPtw is determined according to the formula COPtw=a*(tw-Tw); a is a correction coefficient not less than zero. Preferably, the value of a ranges from [0, 6], for example, a=4.

The real-time internal engine speed efficiency ratio correction factor COPnn is determined according to the real-time internal engine speed nn and the rated internal machine speed Nn. As a preferred embodiment, the real-time internal engine speed energy efficiency ratio correction factor COPnn is determined according to the formula COPnn=b*(nn-Nn); b is a correction coefficient not less than zero. Preferably, b has a value range of [0, 0.4] and b = 0.15.

The real-time external motor speed efficiency ratio correction factor COPnw is determined according to the real-time external machine speed nw and the rated external machine speed Nw. As a preferred embodiment, the real-time external motor speed energy efficiency ratio correction factor COPnw is determined according to the formula COPnw=c*(nw-Nw); c is a correction coefficient not less than zero. Preferably, the value of c ranges from [0, 0.06], and c=0.03.

Step 23: Determine the real-time heating energy efficiency ratio COPs.

Specifically, the real-time heating energy efficiency ratio COPs is determined according to the following formula:

COPs=[(COPc/COPcr)*d+e]*COPsr+COPtw+COPnn+COPnw.

Where COPc, COPtw, COPnn, and COPnw are all determined by step 22; COPcr is the rated core energy efficiency ratio corresponding to the rated press frequency fr and the rated indoor temperature tnr determined according to the core energy efficiency ratio reference table, and the determination method is referred to step 22 The process of determining COPc; COPsr is the nominal heating energy efficiency ratio of the air conditioner, determined by the prior art; d and e are correction coefficients. Preferably, d has a value range of [0, 2], and e has a value range of [-1, 1]. For example, d=1, e=0.

Step 24: Determine the real-time heating amount W according to the real-time heating energy efficiency ratio COPs and the real-time operating power P.

Specifically, the real-time heating amount is determined according to the formula W=COPs*P.

Step 25: Accumulate all the real-time heating amounts in the set time period to obtain the actual heating capacity of the set time period.

Using the method of the embodiment of FIG. 2, the real-time press frequency corresponding to the real-time press frequency and the real-time indoor temperature corresponding to the heating energy efficiency ratio are determined by the core energy efficiency ratio reference table including a plurality of known core energy efficiency ratio reference values. Energy efficiency ratio, based on real-time outdoor temperature, real-time internal machine speed and real-time external machine speed, determine the energy efficiency ratio correction factor that has less influence on the heating energy efficiency ratio, and then determine the real-time based on the real-time core energy efficiency ratio and multiple energy efficiency ratio correction factors. According to the real-time heating energy efficiency ratio and real-time operating power, the actual heating capacity is determined according to the real-time heating energy efficiency ratio, and the actual heating result has high accuracy, which is in line with the actual operating conditions.

The above embodiments are only used to illustrate the technical solutions of the present invention, and are not limited thereto; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still The technical solutions are described as being modified, or equivalents are replaced by some of the technical features; and such modifications or substitutions do not depart from the spirit and scope of the technical solutions claimed in the present invention.

Claims (10)

1. An air conditioner heating operation control method, characterized in that the method comprises:

   Obtaining the actual heating capacity of the air conditioner operating during the set time period and the actual temperature change of the room where the air conditioner is located during the set time period;

   Determining a reference temperature change corresponding to the actual heating amount according to the actual heating capacity and a corresponding relationship between the known heating amount and the reference temperature change;

   Determining a target parameter according to a comparison result of the actual temperature change and a reference temperature change corresponding to the actual heating amount, and controlling the air conditioner to operate according to the target parameter;

   The obtaining the actual heating capacity of the air conditioner running during the set time period comprises: obtaining the real-time press frequency f, the real-time indoor temperature tn, the real-time outdoor temperature tw, and the real-time internal machine speed nn within the set time period. , real-time external machine speed nw and real-time running power P;

   Determining a real-time core energy efficiency ratio COPc corresponding to the real-time press frequency f and the real-time indoor temperature tn according to a known core energy efficiency ratio reference table; the core energy efficiency ratio reference table includes a plurality of reference indoor temperatures and a plurality of The core energy efficiency ratio reference value corresponding to the reference press frequency;

   Determining a real-time outdoor temperature energy efficiency ratio correction factor COPtw according to the real-time outdoor temperature tw and the rated outdoor temperature Tw, determining a real-time internal engine speed energy efficiency ratio correction factor COPnn according to the real-time internal machine speed nn and the rated internal machine speed Nn, according to the The real-time external machine speed nw and the rated external machine speed Nw determine the real-time external machine speed energy efficiency ratio correction factor COPnw;

   Determine real-time heating energy efficiency ratio COPs:

   COPs=[(COPc/COPcr)*d+e]*COPsr+COPtw+COPnn+COPnw;

   COPcr is the rated core energy efficiency ratio corresponding to the rated press frequency fr and the rated indoor temperature tnr determined according to the core energy efficiency ratio reference table; COPsr is the nominal heating energy efficiency ratio of the air conditioner; d and e are correction coefficients;

   Determine the real-time heating capacity W: W = COPs * P;

   All real-time heat generation in the set time period is accumulated to obtain actual heat generation for the set time period.
2. The method according to claim 1, wherein the actual temperature change is an actual temperature increase value or an actual temperature increase rate; and the corresponding relationship between the heat generation and the reference temperature change is an increase in the heat generation and the reference temperature. The correspondence between the value or the reference temperature increase rate.
3. The method according to claim 2, wherein the determining the target parameter according to the comparison result of the actual temperature change and the reference temperature change corresponding to the actual heat generation comprises:

   Comparing the actual temperature change with a reference temperature change corresponding to the actual heating capacity;

   If the ratio of the actual temperature change to the reference temperature change corresponding to the actual heating capacity is greater than the first threshold, lowering the target temperature, and determining the reduced target temperature as the target parameter;

   If the ratio of the actual temperature change to the reference temperature change corresponding to the actual heating capacity is less than the second threshold, raising the target temperature, determining the raised target temperature as the target parameter;

   The first threshold is greater than 1, and the second threshold is less than 1.
4. The method according to claim 2, wherein the determining the target parameter according to the comparison result of the actual temperature change and the reference temperature change corresponding to the actual heat generation comprises:

   Comparing the actual temperature change with a reference temperature change corresponding to the actual heating capacity;

   If the ratio of the actual temperature change to the reference temperature change corresponding to the actual heating capacity is greater than the third threshold, lowering the target frequency, and determining the reduced target frequency as the target parameter;

   If the ratio of the actual temperature change to the reference temperature change corresponding to the actual heating capacity is less than the fourth threshold, raising the target frequency, determining the raised target frequency as the target parameter;

   The third threshold is greater than 1, and the fourth threshold is less than 1.
5. The method according to claim 2, wherein the determining the target parameter according to the comparison result of the actual temperature change and the reference temperature change corresponding to the actual heat generation comprises:

   Comparing the actual temperature change with a reference temperature change corresponding to the actual heating capacity;

   If the ratio of the actual temperature change to the reference temperature change corresponding to the actual heating capacity is greater than the fifth threshold, determining the small capability operating parameter as the non-small capability operating parameter when the current operating parameter of the air conditioner is a non-small capability parameter The target parameter, when the current operating parameter of the air conditioner is the small capacity operating parameter, issuing a reminder that the room area is too small;

   And if the ratio of the actual temperature change to the reference temperature change corresponding to the actual heat quantity is less than a sixth threshold, when the current operating parameter of the air conditioner is a non-large capacity operation parameter, determining the large capacity operation parameter as the The target parameter, when the current operating parameter of the air conditioner is the large capacity operating parameter, issuing a reminder that the room area is too large;

   The fifth threshold is greater than 1, and the sixth threshold is less than 1.
6. The method of claim 2, wherein the method further comprises:

   And if the ratio of the actual temperature change to the reference temperature change corresponding to the actual heating capacity is less than the seventh threshold, issuing a reminder for checking the room tightness; the seventh threshold is less than 1.
7. The method according to any one of claims 1 to 6, wherein the real-time core frequency corresponding to the real-time press frequency f and the real-time indoor temperature tn is determined according to a known core energy efficiency ratio reference table Energy efficiency ratio COPc, including:

   Determining, in the core energy efficiency ratio reference table, two reference press frequencies f1 and f2 adjacent to the real-time press frequency f before and after, determining the core energy efficiency ratio reference table and the real-time indoor temperature tn before And two adjacent reference indoor temperatures tn1 and tn2;

   Obtaining, from the core energy efficiency ratio reference table, a core energy efficiency reference value A corresponding to the reference press frequency f1 and the reference indoor temperature tn2, corresponding to the reference press frequency f1 and the reference indoor temperature tn1 a core energy efficiency reference value B, a core energy efficiency reference value C corresponding to the reference press frequency f2 and the reference indoor temperature tn1, a core energy efficiency reference corresponding to the reference press frequency f2 and the reference indoor temperature tn2 Value D;

   The real-time core energy efficiency ratio COPc corresponding to the real-time press frequency f and the real-time indoor temperature tn is determined according to the core energy efficiency reference value A, the core energy efficiency reference value B, the core energy efficiency reference value C, and the core energy efficiency reference value D.
8. The method according to claim 7, wherein said determining said real-time press frequency f and said core energy efficiency reference value A, core energy efficiency reference value B, core energy efficiency reference value C, and core energy efficiency reference value D The real-time core energy efficiency ratio COPc corresponding to the real-time indoor temperature tn includes:

   Calculating an average value of the core energy efficiency reference value A, the core energy efficiency reference value B, the core energy efficiency reference value C, and the core energy efficiency reference value D, and determining the average value as the real-time press frequency f and the real-time indoor temperature The real-time core energy efficiency ratio COPc corresponding to tn.
9. The method according to claim 7, wherein said determining said real-time press frequency f and said core energy efficiency reference value A, core energy efficiency reference value B, core energy efficiency reference value C, and core energy efficiency reference value D The real-time core energy efficiency ratio COPc corresponding to the real-time indoor temperature tn includes:

   Using the bilinear interpolation algorithm, determining the real-time press frequency f and the real-time indoor temperature tn according to the core energy efficiency reference value A, the core energy efficiency reference value B, the core energy efficiency reference value C, and the core energy efficiency reference value D. The real-time core energy efficiency ratio is COPc.
10. The method according to any one of claims 1 to 6, wherein the determining the real-time outdoor temperature energy efficiency ratio correction factor COPtw according to the real-time outdoor temperature tw and the rated outdoor temperature Tw, specifically comprising: according to the following formula COPtw=a*(tw-Tw), determining the real-time outdoor temperature energy efficiency ratio correction factor COPtw; a is a correction coefficient not less than 0;

    The determining the real-time internal machine speed energy efficiency ratio correction factor COPnn according to the real-time internal machine speed nn and the rated internal machine speed Nn, specifically: determining the real-time internal machine speed energy efficiency according to the following formula COPnn=b*(nn-Nn) The ratio correction factor COPnn;b is a correction coefficient not less than 0;

    The determining the real-time external machine speed energy efficiency ratio correction factor COPnw according to the real-time external machine speed nw and the rated external machine speed Nw, specifically including:

    The real-time external motor speed energy efficiency ratio correction factor COPnw is determined according to the following formula COPnw=c*(nw-Nw); c is a correction coefficient not less than 0.