CN114623562B

CN114623562B - Air conditioning equipment, control method and control device thereof

Info

Publication number: CN114623562B
Application number: CN202011443956.0A
Authority: CN
Inventors: 李斌; 郑春元; 丁云霄; 李冬冬; 郭芳程
Original assignee: Midea Group Co Ltd; GD Midea Heating and Ventilating Equipment Co Ltd
Current assignee: Midea Group Co Ltd; GD Midea Heating and Ventilating Equipment Co Ltd
Priority date: 2020-12-08
Filing date: 2020-12-08
Publication date: 2024-05-07
Anticipated expiration: 2040-12-08
Also published as: CN114623562A

Abstract

The invention provides an air conditioning device, a control method and a control device thereof, wherein the control method comprises the following steps: acquiring an initialized time constant; acquiring an adjusted set temperature, and monitoring the indoor actual temperature until the adjusted set temperature is reached; generating an indoor actual temperature change curve according to the indoor actual temperature monitored every preset time in the process that the indoor actual temperature reaches the adjusted set temperature; according to the time constant, predicting a temperature change curve in the process that the indoor actual temperature reaches the adjusted set temperature, and generating an indoor predicted temperature change curve; calculating the average error of the indoor actual temperature change curve and the indoor predicted temperature change curve; the time constant is adjusted based on the average error. Therefore, the method realizes self-adaptive adjustment of the time constant, so that the air conditioning equipment can realize optimal energy efficiency operation.

Description

Air conditioning equipment, control method and control device thereof

Technical Field

The invention relates to the technical field of electric appliances, in particular to air conditioning equipment, and a control method and a control device thereof.

Background

With the improvement of the living standard of people, air conditioning apparatuses are gradually appearing in thousands of homes and offices. According to statistics, the current air conditioning equipment still commonly has the phenomenon of frequent start-stop (more than one stop per hour is more than half of the duty ratio) caused by unmatched system output and building load, and in addition, the air conditioning equipment can meet the requirements of various complex scenes such as installation conditions and room size in practice, so that the air conditioning equipment cannot realize optimal energy efficiency operation.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems in the related art to some extent.

The invention provides air conditioning equipment, a control method and a control device thereof, which are used for solving the technical problems that the air conditioning equipment in the related art has high energy consumption and cannot operate with optimal energy efficiency.

In order to achieve the above object, an embodiment of a first aspect of the present invention proposes a control method of an air conditioning apparatus, the method comprising: acquiring an initialized time constant and an adjusted set temperature; monitoring the indoor actual temperature until reaching the adjusted set temperature; generating an indoor actual temperature change curve according to the indoor actual temperature monitored every preset time in the process that the indoor actual temperature reaches the adjusted set temperature; according to the time constant, predicting a temperature change curve in the process that the indoor actual temperature reaches the adjusted set temperature, and generating an indoor predicted temperature change curve; calculating average errors of the indoor actual temperature change curve and the indoor predicted temperature change curve; and adjusting the time constant according to the average error.

According to the indoor temperature prediction method provided by the embodiment of the invention, the initialized time constant and the adjusted set temperature are firstly obtained, the indoor actual temperature is monitored until the adjusted set temperature is reached, then, according to the indoor actual temperature monitored at intervals of preset time in the process that the indoor actual temperature reaches the adjusted set temperature, an indoor actual temperature change curve is generated, according to the time constant, the temperature change curve in the process that the indoor actual temperature reaches the adjusted set temperature is predicted, an indoor predicted temperature change curve is generated, finally, the average error of the indoor actual temperature change curve and the indoor predicted temperature change curve is calculated, and according to the average error, the time constant is adjusted. Therefore, the method realizes self-adaptive adjustment of the time constant, so that the air conditioning equipment can realize optimal energy efficiency operation.

In addition, the control method of the air conditioning apparatus according to the above embodiment of the present invention may further have the following additional technical features:

According to one embodiment of the invention, said adjusting said time constant according to said average error comprises: judging the running mode of the air conditioning equipment under the condition that the average error is larger than a first preset average error; if the operation mode of the air conditioning equipment is a heating mode, the time constant is increased; if the operation mode of the air conditioning apparatus is a cooling mode, the time constant is adjusted down.

According to one embodiment of the invention, said adjusting said time constant according to said average error comprises: judging the operation mode of the air conditioning equipment under the condition that the average error is smaller than a second preset average error; wherein the second preset average error is smaller than the first preset average error; if the operation mode of the air conditioning equipment is a heating mode, the time constant is reduced; if the operation mode of the air conditioning apparatus is a cooling mode, the time constant is adjusted to be large.

According to one embodiment of the invention, said adjusting said time constant according to said average error comprises: and under the condition that the average error is larger than or equal to the second preset average error and smaller than or equal to the first preset average error, the time constant is not adjusted.

According to one embodiment of the present invention, the monitoring the actual indoor temperature until reaching the adjusted set temperature includes: judging whether Wen Tingji is reached; and under the condition of stopping the machine when the temperature is not reached, judging whether the indoor actual temperature reaches the regulated set temperature.

According to one embodiment of the present invention, the predicting, according to the time constant, a temperature change curve during the time when the actual indoor temperature reaches the adjusted set temperature includes: and predicting the indoor predicted temperature at the current moment according to the time constant, and predicting the indoor predicted temperature at the subsequent moment after the current moment according to the indoor actual temperature at the current moment.

According to one embodiment of the present invention, the predicting the indoor predicted temperature at the current time according to the time constant includes: acquiring a load indication temperature at the previous moment according to the time constant; acquiring indoor predicted temperature at the previous moment according to the time constant; and determining the indoor predicted temperature at the current moment according to the load indication temperature at the previous moment and the indoor predicted temperature at the previous moment.

According to one embodiment of the present invention, the predicting the indoor predicted temperature at a subsequent time after the current time according to the indoor actual temperature at the current time includes: acquiring the actual temperature of a heat exchanger of an indoor unit of air conditioning equipment at the current moment; acquiring the indoor actual temperature at the current moment and the load indication temperature at the current moment; determining a temperature change value at a subsequent moment according to the actual temperature of the heat exchanger at the current moment, the indoor actual temperature at the current moment and the load indication temperature at the current moment; and determining the indoor predicted temperature at the subsequent moment according to the indoor actual temperature at the current moment and the temperature change value at the subsequent moment.

According to one embodiment of the present invention, the obtaining the load indication temperature at the current time includes: acquiring a set temperature at the current moment; acquiring indoor predicted temperature at the current moment; and determining the load indication temperature at the current moment according to the set temperature at the current moment, the indoor predicted temperature at the current moment and the indoor actual temperature at the current moment.

According to one embodiment of the present invention, the current time is recorded as the 0 th time, the subsequent time includes the nth time after the current time, n is a positive integer, and the determining the temperature change value at the subsequent time according to the actual temperature of the heat exchanger at the current time, the indoor actual temperature at the current time and the load indication temperature at the current time includes: acquiring a temperature change coefficient; performing n-time cyclic processes, wherein the ith cyclic process includes: determining a first temperature change value according to the temperature of the heat exchanger at the i-1 moment, the indoor actual temperature at the i-1 moment and the temperature change coefficient; determining a second temperature change value according to the indoor actual temperature at the i-1 time and the load indication temperature at the i-1 time; and determining a temperature change value at the ith moment according to the first temperature change value and the second temperature change value, wherein the value of i is a positive integer less than or equal to n.

According to one embodiment of the present invention, the determining the temperature change value at the i-th time according to the first temperature change value and the second temperature change value includes: subtracting the first temperature change value from the second temperature change value to obtain a temperature change value at the i-th moment when the operation mode of the air conditioning equipment is a refrigeration mode; and subtracting the second temperature change value from the first temperature change value to obtain the temperature change value at the i-th moment when the operation mode of the air conditioning equipment is a heating mode.

According to one embodiment of the present invention, the determining the indoor predicted temperature at the subsequent time according to the indoor actual temperature at the current time and the temperature change value at the subsequent time includes: and adding the temperature change value at the ith moment to the indoor actual temperature at the ith-1 moment to obtain the indoor predicted temperature at the ith moment.

According to one embodiment of the present invention, the acquiring a temperature change coefficient includes: determining the temperature change coefficient according to the target temperature of the heat exchanger and the target air supply parameter of the fan of the indoor unit; the target temperature and the target air supply parameter are the heat exchanger temperature and the air supply parameter of the fan, which correspond to the optimal energy efficiency point of the air conditioning equipment when the current load demand is met.

In order to achieve the above object, a second aspect of the present invention provides a control device of an air conditioning apparatus, the device comprising: the acquisition module is used for acquiring the initialized time constant and the adjusted set temperature; the monitoring module is used for monitoring the indoor actual temperature until reaching the adjusted set temperature; the generation module is used for generating an indoor actual temperature change curve according to the indoor actual temperature monitored every preset time in the process that the indoor actual temperature reaches the adjusted set temperature; the prediction module is used for predicting a temperature change curve in the process that the indoor actual temperature reaches the adjusted set temperature according to the time constant, and generating an indoor predicted temperature change curve; the calculating module is used for calculating the average error of the indoor actual temperature change curve and the indoor predicted temperature change curve; and the adjusting module is used for adjusting the time constant according to the average error.

According to the control device of the air conditioning equipment, the initialized time constant and the adjusted set temperature are obtained through the obtaining module, the indoor actual temperature is monitored through the monitoring module until the adjusted set temperature is reached, the indoor actual temperature change curve is generated through the generating module according to the indoor actual temperature monitored every preset time in the process that the indoor actual temperature reaches the adjusted set temperature, the indoor predicted temperature change curve is generated through the predicting module according to the time constant, the temperature change curve in the process that the indoor actual temperature reaches the adjusted set temperature is predicted through the predicting module, the average error of the indoor actual temperature change curve and the indoor predicted temperature change curve is calculated through the calculating module, and the time constant is adjusted according to the average error through the adjusting module. Therefore, the device can realize self-adaptive adjustment through the time constant, so that the air conditioning equipment can realize optimal energy efficiency operation.

In addition, the control device of the air conditioning apparatus according to the above embodiment of the present invention may further have the following additional technical features:

according to one embodiment of the invention, the adjustment module comprises: a first judging unit configured to judge an operation mode of the air conditioning apparatus in a case where the average error is greater than a first preset average error; a first adjusting unit for adjusting the time constant in the case that the operation mode of the air conditioning apparatus is a heating mode; and a second adjusting unit for adjusting the time constant in the case that the operation mode of the air conditioning apparatus is a cooling mode.

According to one embodiment of the invention, the adjustment module comprises: a second judging unit configured to judge an operation mode of the air conditioning apparatus in a case where the average error is smaller than a second preset average error; wherein the second preset error is less than the first preset error; a third adjusting unit for adjusting the time constant in the case that the operation mode of the air conditioning apparatus is a heating mode; and a fourth adjusting unit for adjusting the time constant when the operation mode of the air conditioning device is a cooling mode.

According to one embodiment of the invention, the adjustment module comprises: and the fifth adjusting unit is used for not adjusting the time constant under the condition that the average error is larger than or equal to the second preset error and smaller than or equal to the first preset error.

According to an embodiment of the present invention, the above apparatus further includes: the first judging module is used for judging whether Wen Tingji is reached or not; and the second judging module is used for judging whether the indoor actual temperature reaches the adjusted set temperature under the condition of not stopping when the temperature is not reached.

According to one embodiment of the invention, the prediction module comprises: the first prediction unit is used for predicting indoor prediction temperature at the current moment according to the time constant; and the second prediction unit is used for predicting the indoor predicted temperature at the subsequent moment after the current moment according to the indoor actual temperature at the current moment.

According to one embodiment of the present invention, the first prediction unit includes: the first acquisition subunit is used for acquiring the load indication temperature at the previous moment according to the time constant; the second acquisition subunit is used for acquiring the indoor predicted temperature at the previous moment according to the time constant; and the first determination subunit determines the indoor predicted temperature at the current moment according to the load indication temperature at the previous moment and the indoor predicted temperature at the previous moment.

According to an embodiment of the present invention, the second prediction unit includes: a third obtaining subunit, configured to obtain an actual temperature of a heat exchanger of an indoor unit of the air conditioning apparatus at a current moment; a fourth obtaining subunit, configured to obtain an indoor actual temperature at the current time and a load indication temperature at the current time; a second determining subunit, configured to determine a temperature change value at a subsequent time according to an actual temperature of the heat exchanger at the current time, an indoor actual temperature at the current time, and a load indication temperature at the current time; and the third determination subunit is used for determining the indoor predicted temperature at the subsequent moment according to the indoor actual temperature at the current moment and the temperature change value at the subsequent moment.

According to one embodiment of the present invention, when the fourth obtaining subunit obtains the load indication temperature at the current time, the method includes: acquiring a set temperature at the current moment; acquiring indoor predicted temperature at the current moment; and determining the load indication temperature at the current moment according to the set temperature at the current moment, the indoor predicted temperature at the current moment and the indoor actual temperature at the current moment.

According to one embodiment of the present invention, the current time is recorded as a 0 th time, the subsequent time includes an nth time after the current time, n is a positive integer, and the second determining subunit determines the temperature change value at the subsequent time according to the actual temperature of the heat exchanger at the current time, the indoor actual temperature at the current time, and the load indication temperature at the current time, where the determining comprises: acquiring a temperature change coefficient; performing n-time cyclic processes, wherein the ith cyclic process includes: determining a first temperature change value according to the temperature of the heat exchanger at the i-1 moment, the indoor actual temperature at the i-1 moment and the temperature change coefficient; determining a second temperature change value according to the indoor actual temperature at the i-1 time and the load indication temperature at the i-1 time; and determining a temperature change value at the ith moment according to the first temperature change value and the second temperature change value, wherein the value of i is a positive integer less than or equal to n.

According to an embodiment of the present invention, when the third determining subunit determines the indoor predicted temperature at the subsequent time according to the indoor actual temperature at the current time and the temperature change value at the subsequent time, the third determining subunit includes: and adding the temperature change value at the ith moment to the indoor actual temperature at the ith-1 moment to obtain the indoor predicted temperature at the ith moment.

In order to achieve the above object, a third aspect of the present invention provides an air conditioning apparatus comprising: a processor and a memory; wherein the processor executes a program corresponding to the executable program code by reading the executable program code stored in the memory, for implementing the control method of the air conditioning apparatus as set forth in the embodiment of the first aspect of the present invention.

In order to achieve the above object, a fourth aspect of the present invention provides a non-transitory computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements a control method of an air conditioning apparatus as set forth in the first aspect of the present invention.

In order to achieve the above object, a fifth aspect of the present invention provides a computer program product for implementing a control method of an air conditioning apparatus as set forth in the first aspect of the present invention when instructions in the computer program product are executed by a processor.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The foregoing and/or additional aspects and advantages of the invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

fig. 1 is a flowchart illustrating a control method of an air conditioning apparatus according to an embodiment of the present invention;

Fig. 2 is a flow chart illustrating a control method of an air conditioning apparatus according to an embodiment of the present invention;

FIG. 3 is a flow chart of indoor predicted temperatures at subsequent times according to one embodiment of the invention;

FIG. 4 is a flow chart of indoor predicted temperatures at subsequent times according to another embodiment of the invention;

FIG. 5 is a flow diagram of a temperature coefficient of variation acquisition process according to one embodiment of the present invention;

FIG. 6 is a graph of the change in room temperature at a time constant of 600s, according to one embodiment of the invention;

FIG. 7 is a graph of the change in room temperature at a time constant of 900s, according to one embodiment of the invention;

FIG. 8 is a graph of the change in room temperature at a time constant of 1300s according to one embodiment of the invention;

FIG. 9 is a graph of the change in room temperature at a time constant of 1500s, according to one embodiment of the invention; and

Fig. 10 is a block schematic diagram of a control device of an air conditioning apparatus according to an embodiment of the present invention.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.

An air conditioning apparatus, a control method thereof, and a control device thereof according to an embodiment of the present invention are described below with reference to the accompanying drawings.

Fig. 1 is a flowchart illustrating a control method of an air conditioning apparatus according to an embodiment of the present invention.

The air conditioning equipment can be air conditioning equipment, air purifier and other electrical equipment.

As shown in fig. 1, the control method of the air conditioning apparatus includes the steps of:

s101, acquiring an initialized time constant and an adjusted set temperature.

It should be noted that, when the air conditioning apparatus is started, the time constant may be set to a preset value (the preset value may be a fixed value obtained according to experience), the set temperature (the set temperature is the temperature at the time of last shutdown) is obtained, whether an adjustment instruction of the set temperature is received is monitored, and if the adjustment instruction is received, the adjusted set temperature is obtained; if no adjustment instruction is received, the process ends, i.e., step S102 is not performed.

S102, monitoring the indoor actual temperature until the adjusted set temperature is reached.

For example, the indoor actual temperature is detected by a temperature sensor provided in the room, and it is determined whether the indoor actual temperature reaches the adjusted set temperature.

S103, generating an indoor actual temperature change curve according to the indoor actual temperature monitored every preset time in the process that the indoor actual temperature reaches the adjusted set temperature.

The preset time may be set according to actual conditions, for example, may be 2 minutes.

S104, predicting a temperature change curve in the process that the indoor actual temperature reaches the adjusted set temperature according to the time constant, and generating an indoor predicted temperature change curve.

S105, calculating average errors of the indoor actual temperature change curve and the indoor predicted temperature change curve.

And S106, adjusting the time constant according to the average error.

According to one embodiment of the invention, adjusting the time constant based on the average error comprises: judging the operation mode of the air conditioning equipment under the condition that the average error is larger than a first preset average error; if the operation mode of the air conditioning equipment is a heating mode, the time constant is increased; if the operation mode of the air conditioning apparatus is the cooling mode, the time constant is adjusted down.

According to one embodiment of the invention, adjusting the time constant based on the average error comprises: judging the operation mode of the air conditioning equipment under the condition that the average error is smaller than a second preset average error; wherein the second preset average error is smaller than the first preset average error; if the operation mode of the air conditioning equipment is a heating mode, the time constant is reduced; if the operation mode of the air conditioning apparatus is the cooling mode, the time constant is adjusted to be large.

According to one embodiment of the invention, adjusting the time constant based on the average error comprises: and under the condition that the average error is larger than or equal to the second preset average error and smaller than or equal to the first preset average error, the time constant is not adjusted.

Specifically, the air conditioner initializes a time constant λ and acquires an adjusted set temperature. Then, starting to monitor whether the indoor actual temperature reaches the adjusted set temperature at the time point of adjusting the set temperature, starting to detect the indoor actual temperature at the time point of adjusting the set temperature, acquiring and recording the indoor actual temperature once every preset time such as 2min until the indoor actual temperature reaches the adjusted set temperature, generating an indoor actual temperature change curve, starting to predict the indoor predicted temperature at the current moment at the time point of adjusting the set temperature and predicting the indoor predicted temperature at the later moment after the current moment by the current time constant lambda, and generating an indoor predicted temperature change curve. And finally, calculating the average error of the indoor actual temperature change curve and the indoor predicted temperature change curve, and adjusting the time constant according to the average error.

Wherein, under the condition that the average error is larger than the first preset average error, judging the running mode of the air conditioning equipment; if the operation mode of the air conditioning equipment is a heating mode, the time constant is increased by a preset time; if the operation mode of the air conditioning apparatus is a cooling mode, the time constant is reduced by a preset time.

Judging the operation mode of the air conditioning equipment under the condition that the average error is smaller than a second preset average error; if the operation mode of the air conditioning equipment is a heating mode, the time constant is reduced by a preset time; if the operation mode of the air conditioning apparatus is a cooling mode, the time constant is increased by a preset time.

And when the average error is larger than or equal to the second preset average error and smaller than or equal to the first preset average error, the time constant is not adjusted.

In order to avoid misoperations of the user causing the air conditioning device to reach Wen Tingji, according to one embodiment of the present invention, monitoring the indoor actual temperature until the adjusted set temperature is reached includes: judging whether Wen Tingji is reached; and under the condition of stopping without reaching the temperature, monitoring whether the indoor actual temperature reaches the set temperature after adjustment.

That is, after the user adjusts the set temperature, since the adjusted set temperature may be very close to the set temperature before the adjustment, it is first determined whether the compressor is stopped at the temperature before step S102, and if the compressor is stopped at the temperature, the above step S102 is not performed any more; if the temperature is not reached, judging whether the indoor actual temperature reaches the adjusted set temperature, and continuing to execute the step S102.

In order to make the present invention more clearly understood by those skilled in the art, fig. 2 is a flow chart illustrating a control method of an air conditioning apparatus according to an embodiment of the present invention. As shown in fig. 2, the control method of the air conditioning apparatus includes:

S201, initializing a time constant λ.

S202, judging whether the set temperature is adjusted. If yes, go to step S203; if not, the process returns to continue with step S202.

S203, judging whether Wen Tingji is reached. If yes, return to execute step S202; if not, step S204 is performed.

S204, judging whether the adjusted set temperature is reached. If yes, go to step S205; if not, the process returns to step S202.

S205, a change curve of the actual indoor temperature between the start time point of the adjustment setting temperature and the time point of the reaching of the setting temperature is recorded (one is recorded every x min).

S206, starting to operate the 'room temperature calculation module' at the starting time point of the adjustment set temperature by the current time constant lambda, and obtaining an indoor predicted temperature change curve between the starting time point and the time point of reaching the adjustment set temperature.

S207, calculating the average error of the indoor predicted temperature change curve and the indoor actual temperature change curve.

S208, judging whether the average error is larger than +alpha or smaller than-alpha. If greater than +α, step S209 is performed; if less than- α, step S212 is performed.

S209, judging whether the current operation mode is a cooling mode or a heating mode. If the cooling mode is the cooling mode, executing step S210; if the heating mode is the heating mode, step S211 is performed.

S210, time constant λ=λ -ts.

S211, time constant λ=λ+τs.

S212, judging whether the current operation mode is a cooling mode or a heating mode. If the cooling mode is the cooling mode, step S213 is performed; if the heating mode is the heating mode, step S214 is performed.

S213, time constant λ=λ+τs.

S214, time constant λ=λ -ts.

The following describes a temperature change curve in predicting that the actual indoor temperature reaches the adjusted set temperature according to the time constant, i.e. the specific content of step S106.

According to one embodiment of the present invention, predicting a temperature change curve in a process that an indoor actual temperature reaches an adjusted set temperature according to a time constant includes: and predicting the indoor predicted temperature at the current moment according to the time constant, and predicting the indoor predicted temperature at the subsequent moment after the current moment according to the indoor actual temperature at the current moment.

Fig. 3 is a schematic flow chart of indoor predicted temperature at a subsequent time according to an embodiment of the present invention, and as shown in fig. 3, predicting the indoor predicted temperature at a subsequent time after the current time according to the indoor actual temperature at the current time includes:

S301, acquiring the actual temperature of a heat exchanger of an indoor unit of the air conditioning equipment at the current moment.

In the embodiment of the invention, the temperature of the heat exchanger of the indoor unit of the air conditioning equipment can be detected through the relevant temperature sensor, so that the actual temperature of the heat exchanger of the indoor unit at the current moment can be determined by acquiring the data acquired by the relevant temperature sensor.

S302, acquiring the indoor actual temperature at the current moment and the load indication temperature at the current moment.

In the embodiment of the invention, the temperature of the indoor space where the air conditioning equipment is located can be detected by the relevant temperature sensor, so that in the embodiment of the invention, the data acquired by the relevant temperature sensor can be acquired, and the indoor actual temperature at the current moment can be determined.

The related temperature sensor can be arranged on the air conditioning equipment, and when the related temperature sensor collects the indoor actual temperature at the current moment, the air conditioning equipment can directly obtain the indoor actual temperature at the current moment collected by the related temperature sensor. Or the related temperature sensor can be set independently of the air conditioning equipment, when the related temperature sensor collects the indoor actual temperature at the current moment, the collected indoor actual temperature at the current moment can be sent to the air conditioning equipment in a wireless communication mode such as Bluetooth, wireless local area network (WIRELESS FIDELITY, wiFi for short) and the like, and accordingly, the air conditioning equipment can obtain the indoor actual temperature at the current moment.

In the embodiment of the invention, the load indication temperature at the current moment can be obtained, and the load indication temperature at the current moment can be determined according to the state parameter at the previous moment and the state parameter at the current moment. The following embodiments will be described in detail, and will not be described here.

In the embodiment of the present invention, only step 102 is executed after step 101 to perform an example, and in actual application, in order to improve calculation efficiency, the actual temperature of the heat exchanger at the current time, the indoor actual temperature at the current time, and the load indication temperature at the current time may be obtained simultaneously or may be obtained sequentially.

S303, determining a temperature change value at a subsequent moment according to the actual temperature of the heat exchanger at the current moment, the indoor actual temperature at the current moment and the load indication temperature at the current moment.

In the embodiment of the invention, the temperature change coefficient can be obtained, wherein the temperature change coefficient is determined according to the temperature of the heat exchanger corresponding to the optimal energy efficiency point of the air conditioning equipment when the air conditioning equipment runs under the condition of meeting the current load demand and the air supply parameter of the fan of the indoor unit. The air supply parameters can be air quantity, air speed, windshield and other air supply parameters.

After the temperature change coefficient is obtained, the temperature change value at the subsequent moment can be determined according to the obtained temperature change coefficient, the temperature of the heat exchanger at the current moment, the indoor actual temperature at the current moment and the temperature change coefficient.

As an example, when the subsequent time is the 1 st time after the current time, the first temperature change value may be determined according to the temperature of the heat exchanger at the current time, the indoor actual temperature at the current time, and the temperature change coefficient. The first temperature change value has a mapping relation with the temperature of the heat exchanger at the current moment, the indoor actual temperature at the current moment and the temperature change coefficient.

For example, if the first temperature change value is Δ1, the current time is T, the temperature of the heat exchanger at the current time is Z (T), the indoor actual temperature at the current time is T ₁ (T), and the temperature change coefficient is α, the first temperature change value may be calculated according to the following formula (1):

Δ1＝(T₁(t)-Z(t))(1-α)；(1)

And, the second temperature variation value may be determined according to the indoor actual temperature at the current time and the load indication temperature at the current time. The second temperature change value has a mapping relation with the indoor actual temperature at the current moment and the load indication temperature at the current moment.

For example, if the second temperature change value is Δ2 and the load indication temperature at the current time is T _load,r (T), the second temperature change value may be calculated according to the following formula (2):

Δ2＝(T₁(t)-T_load,r(t))*β；(2)

where β is a temperature change constant due to load.

Then, the temperature change value at time t+1 may be determined from the first temperature change value and the second temperature change value. The temperature change value at the time t+1 is related to the current working condition of the air conditioning equipment and the first temperature change value and the second temperature change value.

As an example, when the air conditioning apparatus is in a cooling condition, the first temperature change value may be subtracted from the second temperature change value to obtain a temperature change value at time t+1. For example, when the temperature change value at time t+1 is Δt ₁ (t+1), Δt ₁ (t+1) =Δ2—Δ1.

As another example, when the air conditioning apparatus is in a heating condition, the second temperature variation value may be subtracted from the first temperature variation value to obtain a temperature variation value at time t+1, i.e., Δt ₁ (t+1) =Δ1- Δ2.

S304, determining the indoor predicted temperature at the subsequent moment according to the temperature change value at the subsequent moment.

In the embodiment of the invention, the indoor predicted temperature at the subsequent moment can be determined according to the temperature change value at the subsequent moment. For example, when the subsequent time is the next time to the current time or the 1 st time after the current time, and the current time is T, the indoor predicted temperature at the time marked t+1 is T ₁ (t+1), then:

T₁(t+1)＝T₁(t)+ΔT₁(t+1)；(3)

Thereby, the actual temperature of the heat exchanger of the indoor unit of the air conditioning equipment at the current moment is obtained; acquiring the indoor actual temperature at the current moment and the load indication temperature at the current moment; determining a temperature change value at a subsequent moment according to the actual temperature of the heat exchanger at the current moment, the indoor actual temperature at the current moment and the load indication temperature at the current moment; and determining the indoor predicted temperature at the subsequent moment according to the temperature change value at the subsequent moment. Therefore, the indoor temperature at the subsequent moment can be predicted according to the indoor temperature at the current moment, visual basis can be provided for a user to adjust the operation parameters of the air conditioning equipment, such as the set temperature and the air supply parameters, the adjustment times of the user are reduced, and the use experience of the user is improved.

In order to clearly explain how the embodiment of the invention determines the load indication temperature at the current moment according to the state parameter at the previous moment and the state parameter at the current moment, the embodiment of the invention provides another indoor temperature prediction method.

Fig. 4 is a schematic flow chart of indoor predicted temperature at a subsequent time according to another embodiment of the present invention. As shown in fig. 4, predicting the indoor predicted temperature at a subsequent time after the current time based on the indoor actual temperature at the current time may include the steps of:

s401, acquiring the actual temperature of a heat exchanger of an indoor unit of the air conditioning equipment at the current moment.

S402, acquiring the indoor actual temperature at the current moment.

The execution process of S401 to S402 may refer to the execution process in the above embodiment, and will not be described herein.

S403, acquiring the set temperature at the current moment.

In the embodiment of the invention, the set temperature at the current moment can be determined directly according to the temperature set by the user. For example, the current time is T, and the set temperature at the current time is T _Set (T).

S404, predicting the indoor predicted temperature at the current moment according to the time constant.

In one possible implementation manner of the embodiment of the present invention, the load indication temperature at the previous moment may be obtained according to a time constant, the indoor prediction temperature at the previous moment may be obtained according to the time constant, and the indoor prediction temperature at the current moment may be determined according to the load indication temperature at the previous moment and the indoor prediction temperature at the previous moment.

As an example, when the current time is T, the previous time is (T-1), the indoor predicted temperature at the current time is marked as T _s,ob (T), the indoor predicted temperature at the previous time is T _s,ob (T-1), the load indication temperature at the previous time is T _load,r (T-1), and then T _s,ob (n) has a mapping relationship with T _s,ob(t-1)、T_load,r (T-1) and a time constant λ. For example, T _s,ob(t)＝f₁(T_s,ob(t-1),T_load,r (T-1), λ).

For example, the indoor predicted temperature T _s,ob (T) at the current time may be calculated according to the following equation (4):

T_s,ob(t)＝T_s,ob(t-1)*ε(λ)+(1-ε(λ))*T_load,r(t-1)；(4)

where ε (λ) is a function of the time constant.

It should be noted that, in the embodiment of the present invention, only the step S404 is executed after the step S403 to illustrate, and in practical application, in order to improve the calculation efficiency, the step S404 may be executed in parallel with the step S403, or the step S404 may be executed before the step S403, which is not limited by the present invention.

S405, determining the load indication temperature at the current moment according to the set temperature at the current moment, the indoor predicted temperature at the current moment and the indoor actual temperature at the current moment.

The load indication temperature T _load,r (T) at the current time has a mapping relationship with the set temperature T _Set (T) at the current time, the indoor predicted temperature T _s,ob (T) at the current time, and the indoor actual temperature T ₁ (T) at the current time. For example, T _load,r(t)＝f₂(T_Set(t),T_s,ob(t),T₁ (T)).

As an example, the load indication temperature T _load,r (T) at the current time may be calculated according to the following formula (5):

T_load,r(t)＝a*T_Set(t)+b*T_s,ob(t)+c*T₁(t)；(5)

Wherein a, b and c are constants respectively.

For ease of calculation, the load indication temperature and the indoor predicted temperature at the initial calculation time may be equal to the indoor actual temperature at the corresponding time with respect to the formulas (4) and (5).

S406, determining a temperature change value at a subsequent moment according to the actual temperature of the heat exchanger at the current moment, the indoor actual temperature at the current moment and the load indication temperature at the current moment.

S407, determining the indoor predicted temperature at the subsequent moment according to the temperature change value at the subsequent moment.

The execution of steps S406 to S407 may be referred to the execution of the above embodiment, and will not be described herein.

It should be understood that when the subsequent time is the first time after the current time, the indoor predicted temperature T ₁ (t+1) at the first time after the current time may be obtained directly according to formula (3), when the indoor predicted temperature T ₁ (t+1) at the first time after the current time is obtained by calculation, the above steps may be further performed again according to T ₁ (t+1), to obtain Δt ₁ (t+2), so that T ₁(t+1)+ΔT₁ (t+2) is obtained, T ₁ (t+2) is obtained, and the above steps may be performed again according to T ₁ (t+2), to obtain Δt ₁ (t+3), T ₁(t+2)+ΔT₁ (t+3) is obtained, T ₁ (t+3), and so on, to obtain T ₁(t+m),T₁ (t+m+1), and so on, so that the indoor predicted temperature corresponding to each subsequent time may be obtained.

The above procedure will be described in detail with reference to the following examples.

Fig. 5 is a flow diagram of a temperature coefficient of variation acquisition process according to one embodiment of the present invention. As shown in fig. 5, the acquisition process may include the steps of:

S501, acquiring the actual temperature of a heat exchanger of an indoor unit of the air conditioning equipment at the current moment.

S502, acquiring the indoor actual temperature at the current moment and the load indication temperature at the current moment.

S503, acquiring a temperature change coefficient.

It should be noted that, many dc variable frequency air conditioning apparatuses exist at present to realize variable output operation, and it is counted that the existing air conditioning apparatuses still generally have a phenomenon of frequent start-stop (more than one stop per hour takes up more than half of the duty ratio) due to mismatch between the system output and the building load. And frequent start-up and stop of the air conditioning equipment is similar to frequent start-up and stop of the vehicle, resulting in higher equipment energy consumption. In addition, the excessive output of the air conditioning apparatus is caused by an excessively high condensing temperature (heating operation) or an excessively low evaporating temperature (cooling operation), at which time the system is not operated at an optimum energy efficiency point in satisfying the load condition. It follows that the current air conditioning apparatus still does not fully utilize the capabilities of the inverter apparatus to achieve more efficient operation.

In order to solve the above-described problems, it is necessary to acquire a building load and control a system based on the acquired building load to achieve efficient operation of the matched load. In the prior art, the matching load is calculated mainly by the temperature difference between the temperature of the sucked air and the set temperature, however, the temperature difference cannot be used for calculating the load when the temperature in the reaction chamber reaches the set temperature. Or load simulation can also be performed through complex simulation.

However, the method cannot track and calculate the building load in real time on one hand, and is limited by the calculation capability and is difficult to apply in practical engineering due to the high difficulty of model establishment on the other hand. Therefore, in the prior art, real-time tracking of building load cannot be realized, and then optimal energy efficiency operation is realized through a matched load control algorithm.

Therefore, in the embodiment of the invention, in order to enable the air conditioning equipment to operate at the optimal energy efficiency point under the condition of meeting the current load demand, the temperature change value caused by the energy input of the system and the temperature change value caused by the load can be calculated, so that the temperature change value caused by the energy input of the system and the temperature change value caused by the load are equal, and the air conditioning equipment can operate at the optimal energy efficiency point under the condition of meeting the current load demand.

The temperature change value caused by the energy input of the system has a mapping relation with the temperature of the heat exchanger at the current moment, the indoor actual temperature at the current moment and the temperature change coefficient. The temperature change coefficient has a mapping relation with a target temperature of the heat exchanger and a target air supply parameter of a fan of the indoor unit, wherein the target temperature and the target air supply parameter are the heat exchanger temperature and the air supply parameter of the fan corresponding to an optimal energy efficiency point of the air conditioning equipment when the current load demand is met.

For example, the temperature change value caused by the system energy input= (T ₁ (T) -Z (T)) (1- α); (6)

The temperature change value caused by the load has a mapping relation with the indoor actual temperature at the current moment and the load indication temperature at the current moment.

For example, a load-induced temperature change value= (T ₁(t)-T_load,r (T)) × β; (7)

The calculation matching load can be calculated by making the following expression hold:

(T₁(t)-Z(t))(1-α)＝(T₁(t)-T_load,r(t))*β；(8)

Solving the formula (8) to obtain alpha, and obtaining the heat exchanger temperature and the air supply parameter of the fan which meet the alpha value, wherein the heat exchanger temperature and the air supply parameter are used as the target temperature and the target air supply parameter.

When the temperature change value caused by the energy input of the system is larger than the temperature change value caused by the load, the target air supply parameter of the fan can be reduced, for example, the rotating speed vf of the fan is reduced, and the target temperature of the heat exchanger is reduced. When the temperature change value caused by the energy input of the system is smaller than the temperature change value caused by the load, the target air supply parameter of the fan can be increased, and the target temperature of the heat exchanger can be increased. When the temperature change value caused by the system energy input is equal to the temperature change value caused by the load, the target air supply parameter and the target temperature can be maintained.

After the target air supply parameter and the target temperature are obtained, the fan can be controlled to adjust the air supply parameter according to the target air supply parameter and the target temperature, and the heat exchanger can be controlled to adjust the temperature.

And moreover, the change condition of the indoor temperature can be detected, the optimal energy efficiency point operation of the system under the condition of meeting the load demand can be realized by enabling the equation (8) to be established, the start-stop times of the system can be greatly reduced, and the energy-saving operation of the air conditioning equipment can be realized.

In the embodiment of the invention, the temperature change coefficient can be calculated according to the formula (8).

S504, executing n times of cyclic processes, wherein the ith cyclic process comprises: determining a first temperature change value according to the temperature of the heat exchanger at the i-1 moment, the indoor actual temperature at the i-1 moment and the temperature change coefficient; determining a second temperature change value according to the indoor actual temperature at the i-1 time and the load indication temperature at the i-1 time; and determining a temperature change value at the ith moment according to the first temperature change value and the second temperature change value, wherein the value of i is a positive integer less than or equal to n.

The current time is marked as the 0 th time, the subsequent time comprises the nth time after the current time, and the value of n is a positive integer.

S505, determining the indoor predicted temperature at the subsequent moment according to the temperature change value at the subsequent moment.

For example, when the current time is the 0 th time, for the first cycle, the first temperature change value may be determined according to the temperature Z (0) of the heat exchanger at the 0 th time, the indoor actual temperature T ₁ (0) at the 0 th time, and the temperature change coefficient α, where: Δ1= (T ₁ (0) -Z (0)) (1- α), and based on the indoor actual temperature T ₁ (0) at time 0 and the load instruction temperature T _load,r (0) at time 0, determining the second temperature change value as: Δ2= (T ₁(0)-T_load,r (0)) β, when the air conditioning apparatus is in the cooling condition, the first temperature change value may be subtracted from the second temperature change value to obtain a temperature change value Δt ₁ (1) at the next time, i.e. at the time 1, and when the air conditioning apparatus is in the heating condition, the second temperature change value may be subtracted from the first temperature change value to obtain a temperature change value Δt ₁ (1) at the time 1, so that the temperature change value at the time 1 may be added to the indoor actual temperature at the time 0 to obtain the indoor predicted temperature at the time 1, i.e. T ₁(1)＝T₁(0)+ΔT₁ (1).

For the second cycle, the first temperature change value may be determined according to the temperature Z (1) of the heat exchanger at time 1 (the temperature of the heat exchanger at the subsequent time may be made equal to the temperature of the heat exchanger at the current time, i.e., Z (i) =z (0)), the indoor actual temperature at time 1 (the predicted indoor predicted temperature at time 1 may be used as the indoor actual temperature at time 1 after the current time, i.e., the indoor actual temperature at time 1 is T ₁ (1)), and the temperature change coefficient α: Δ1= (T ₁ (1) -Z (1)) (1- α), and based on the indoor actual temperature T ₁ (1) at time 1 and the load indication temperature T _load,r (1) at time 1, determining the second temperature change value as: Δ2= (T ₁(1)-T_load,r (1)) β, when the air conditioning apparatus is in a cooling condition, the first temperature change value may be subtracted from the second temperature change value to obtain a temperature change value Δt ₁ (2) at time 2, and when the air conditioning apparatus is in a heating condition, the second temperature change value may be subtracted from the first temperature change value to obtain a temperature change value Δt ₁ (2) at time 2, so that the temperature change value at time 2 and the indoor actual temperature at time 1 may be added to obtain an indoor predicted temperature at time 2, that is, T ₁(2)＝T₁(1)+ΔT₁ (2).

For the third cycle, the first temperature change value may be determined according to the temperature Z (2) of the heat exchanger at time 2 (the temperature of the heat exchanger at the subsequent time may be made equal to the temperature of the heat exchanger at the current time, that is, Z (i) =z (0)), the indoor actual temperature at time 2 (the predicted indoor predicted temperature at time 2 may be used as the indoor actual temperature at time 2 after the current time, that is, the indoor actual temperature at time 2 is T ₁ (2)), and the temperature change coefficient α: Δ1= (T ₁ (2) -Z (2)) (1- α), and based on the indoor actual temperature T ₁ (2) at time 2 and the load indication temperature T _load,r (2) at time 2, determining the second temperature change value as: Δ2= (T ₁(2)-T_load,r (2)) β, when the air conditioning apparatus is in a cooling condition, the first temperature change value may be subtracted from the second temperature change value to obtain a temperature change value Δt ₁ (3) at time 3, and when the air conditioning apparatus is in a heating condition, the second temperature change value may be subtracted from the first temperature change value to obtain a temperature change value Δt ₁ (3) at time 3, so that the temperature change value at time 3 and the indoor actual temperature at time 2 may be added to obtain an indoor predicted temperature at time 3, that is, T ₁(3)＝T₁(2)+ΔT₁ (3).

Similarly, the indoor predicted temperature T ₁ (4) at time 4, the indoor predicted temperature T ₁ (5) at time 5, …, and the indoor predicted temperature T ₁ (n) at time n can be obtained.

As an example, a plurality of future time-instant room temperature change curves may be predicted using the current load situation at different times, fig. 6 is a room temperature change curve when the time constant is 600s according to an embodiment of the present invention, fig. 7 is a room temperature change curve when the time constant is 900s according to an embodiment of the present invention, fig. 8 is a room temperature change curve when the time constant is 1300s according to an embodiment of the present invention, and fig. 9 is a room temperature change curve when the time constant is 1500s according to an embodiment of the present invention. As can be seen from fig. 6 to 9, according to the control method of the air conditioning apparatus according to the embodiment of the present invention, the indoor predicted temperature change curve is obtained through different time constants, and the time constant corresponding to the minimum deviation curve is obtained by comparing with the indoor actual temperature change curve, as the controlled time constant value, for example, 1500s is used as the time constant, so that the time constant in the tracking load model can realize adaptive control according to the operation parameters of the air conditioning apparatus, and the requirements of various installation conditions and room size are satisfied, so that the air conditioning apparatus can realize the optimal energy efficiency operation.

It should be noted that, the calculation modes of the above formulas of the present invention are only exemplary, and those skilled in the art can set other calculation formulas according to the actual situation. For example, one skilled in the art may also add some correction factors to the above formula. Such changes in the specific calculation mode do not deviate from the basic principle of the present invention and fall within the scope of the present invention.

According to the embodiment of the invention, the room temperature change curve at the future moment can be predicted according to the current load condition, so that a visual basis can be provided for a user to adjust the operation parameters of the air conditioning equipment, such as the set temperature and the wind shield, the adjustment times of the user are reduced, and the use experience of the user is improved.

In order to achieve the above embodiments, the embodiments of the present invention also provide a control device for an air conditioning apparatus.

As shown in fig. 10, the control device 1000 of the air conditioning apparatus includes: the acquisition module 1010, the monitoring module 1020, the generation module 1030, the prediction module 1040, the calculation module 1050, and the adjustment module 1060.

The obtaining module 1010 is configured to obtain the initialized time constant and the adjusted set temperature. The monitoring module 1020 is configured to monitor an actual indoor temperature until the adjusted set temperature is reached. The generating module 1030 is configured to generate an indoor actual temperature change curve according to the indoor actual temperature monitored at intervals of a preset time in the process that the indoor actual temperature reaches the adjusted set temperature. The prediction module 1040 is configured to predict a temperature change curve during the process that the indoor actual temperature reaches the adjusted set temperature according to the time constant, and generate an indoor predicted temperature change curve. The calculation module 1050 is configured to calculate an average error of the indoor actual temperature change curve and the indoor predicted temperature change curve. The adjustment module 1060 is configured to adjust the time constant based on the average error.

In one embodiment of the invention, the adjustment module 1060 includes: a first judging unit for judging an operation mode of the air conditioning equipment in case that the average error is greater than a first preset average error; a first adjusting unit for adjusting the time constant when the operation mode of the air conditioning apparatus is a heating mode; and a second adjusting unit for adjusting the time constant in the case that the operation mode of the air conditioning apparatus is the cooling mode.

In one embodiment of the invention, the adjustment module 1060 includes: a second judging unit for judging the operation mode of the air conditioning equipment under the condition that the average error is smaller than a second preset average error; wherein the second preset error is smaller than the first preset error; a third adjusting unit for adjusting down the time constant in case that the operation mode of the air conditioning apparatus is a heating mode; and a fourth adjusting unit for adjusting the time constant when the operation mode of the air conditioning apparatus is the cooling mode.

In one embodiment of the invention, the adjustment module 1060 includes: and the fifth adjusting unit is used for not adjusting the time constant under the condition that the average error is larger than or equal to the second preset error and smaller than or equal to the first preset error.

In one embodiment of the present invention, the apparatus 1000 further includes: the first judging module is used for judging whether Wen Tingji is reached or not; and the second judging module is used for judging whether the indoor actual temperature reaches the adjusted set temperature under the condition of stopping without reaching the temperature.

In one embodiment of the invention, the prediction module 1040 includes: the first prediction unit is used for predicting indoor prediction temperature at the current moment according to the time constant; and the second prediction unit is used for predicting the indoor predicted temperature at the subsequent moment after the current moment according to the indoor actual temperature at the current moment.

In one embodiment of the present invention, a first prediction unit includes: the first acquisition subunit is used for acquiring the load indication temperature at the previous moment according to the time constant; the second acquisition subunit is used for acquiring the indoor predicted temperature at the previous moment according to the time constant; and the first determination subunit determines the indoor predicted temperature at the current moment according to the load indication temperature at the previous moment and the indoor predicted temperature at the previous moment.

In one embodiment of the present invention, the second prediction unit includes: a third obtaining subunit, configured to obtain an actual temperature of a heat exchanger of an indoor unit of the air conditioning apparatus at a current moment; a fourth obtaining subunit, configured to obtain an indoor actual temperature at a current time and a load indication temperature at the current time; the second determining subunit is used for determining a temperature change value at a subsequent moment according to the actual temperature of the heat exchanger at the current moment, the indoor actual temperature at the current moment and the load indication temperature at the current moment; and the third determination subunit is used for determining the indoor predicted temperature at the subsequent moment according to the indoor actual temperature at the current moment and the temperature change value at the subsequent moment.

In one embodiment of the present invention, when the fourth obtaining subunit obtains the load indication temperature at the current time, the method includes: acquiring a set temperature at the current moment; acquiring indoor predicted temperature at the current moment; and determining the load indication temperature at the current moment according to the set temperature at the current moment, the indoor predicted temperature at the current moment and the indoor actual temperature at the current moment.

In one embodiment of the present invention, the current time is recorded as the 0 th time, the subsequent time includes the nth time after the current time, the n is a positive integer, and the second determining subunit determines the temperature change value of the subsequent time according to the actual temperature of the heat exchanger at the current time, the indoor actual temperature at the current time and the load indication temperature at the current time, where the determining subunit includes: acquiring a temperature change coefficient; performing n-time cyclic processes, wherein the ith cyclic process includes: determining a first temperature change value according to the temperature of the heat exchanger at the i-1 moment, the indoor actual temperature at the i-1 moment and the temperature change coefficient; determining a second temperature change value according to the indoor actual temperature at the i-1 time and the load indication temperature at the i-1 time; and determining a temperature change value at the ith moment according to the first temperature change value and the second temperature change value, wherein the value of i is a positive integer less than or equal to n.

In one embodiment of the present invention, determining a temperature change value at an i-th time from the first temperature change value and the second temperature change value includes: subtracting the first temperature change value from the second temperature change value to obtain a temperature change value at the i-th moment when the operation mode of the air conditioning equipment is a refrigeration mode; in the case where the operation mode of the air conditioning apparatus is the heating mode, the second temperature variation value is subtracted from the first temperature variation value to obtain a temperature variation value at the i-th time.

In one embodiment of the present invention, when the third determining subunit determines the indoor predicted temperature at the subsequent time according to the indoor actual temperature at the current time and the temperature change value at the subsequent time, the third determining subunit includes: and adding the temperature change value at the ith moment to the indoor actual temperature at the ith-1 moment to obtain the indoor predicted temperature at the ith moment.

In one embodiment of the present invention, obtaining a temperature change coefficient includes: determining a temperature change coefficient according to the target temperature of the heat exchanger and the target air supply parameter of the fan of the indoor unit; the target temperature and the target air supply parameter are the heat exchanger temperature and the air supply parameter of the fan corresponding to the optimal energy efficiency point of the air conditioning equipment when the current load demand is met.

It should be noted that, details not disclosed in the control apparatus of the air conditioning apparatus according to the embodiment of the present invention are referred to in the control method of the air conditioning apparatus according to the embodiment of the present invention.

In order to achieve the above embodiments, an embodiment of the present invention also proposes an air conditioning apparatus including: a processor and a memory; wherein the processor runs a program corresponding to the executable program code by reading the executable program code stored in the memory, for realizing the control method of the air conditioning apparatus proposed by the above embodiment.

In order to achieve the above-described embodiments, the embodiments of the present invention also provide a non-transitory computer-readable storage medium having stored thereon a computer program, characterized in that the computer program, when executed by a processor, implements the control method of the air conditioning apparatus set forth in the above-described embodiments.

In order to achieve the above-described embodiments, the embodiments of the present invention also provide a computer program product that, when executed by an instruction processor in the computer program product, performs the control method of the air conditioning apparatus set forth in the above-described embodiments of the present invention.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and additional implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order from that shown or discussed, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present invention.

Logic and/or steps represented in the flowcharts or otherwise described herein, e.g., a ordered listing of executable instructions for implementing logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). In addition, the computer readable medium may even be paper or other suitable medium on which the program is printed, as the program may be electronically captured, via, for instance, optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner, if necessary, and then stored in a computer memory.

It is to be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above-described embodiments, the various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. As with the other embodiments, if implemented in hardware, may be implemented using any one or combination of the following techniques, as is well known in the art: discrete logic circuits having logic gates for implementing logic functions on data signals, application specific integrated circuits having suitable combinational logic gates, programmable Gate Arrays (PGAs), field Programmable Gate Arrays (FPGAs), and the like.

Those of ordinary skill in the art will appreciate that all or a portion of the steps carried out in the method of the above-described embodiments may be implemented by a program to instruct related hardware, where the program may be stored in a computer readable storage medium, and where the program, when executed, includes one or a combination of the steps of the method embodiments.

In addition, each functional unit in the embodiments of the present invention may be integrated in one processing module, or each unit may exist alone physically, or two or more units may be integrated in one module. The integrated modules may be implemented in hardware or in software functional modules. The integrated modules may also be stored in a computer readable storage medium if implemented in the form of software functional modules and sold or used as a stand-alone product.

The above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, or the like. While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.

Claims

1. A control method of an air conditioning apparatus, characterized by comprising the steps of:

acquiring an initialized time constant and an adjusted set temperature;

Monitoring the indoor actual temperature until reaching the adjusted set temperature;

Generating an indoor actual temperature change curve according to the indoor actual temperature monitored every preset time in the process that the indoor actual temperature reaches the adjusted set temperature;

Acquiring a load indication temperature at the previous moment according to the time constant;

acquiring indoor predicted temperature at the previous moment according to the time constant;

Determining the indoor predicted temperature at the current moment according to the load indication temperature at the previous moment and the indoor predicted temperature at the previous moment;

Acquiring the actual temperature of a heat exchanger of an indoor unit of air conditioning equipment at the current moment;

Acquiring the indoor actual temperature at the current moment and the load indication temperature at the current moment;

Determining a temperature change value at a subsequent moment according to the actual temperature of the heat exchanger at the current moment, the indoor actual temperature at the current moment and the load indication temperature at the current moment;

determining the indoor predicted temperature at the subsequent moment according to the indoor actual temperature at the current moment and the temperature change value at the subsequent moment;

generating an indoor predicted temperature change curve in the process that the indoor actual temperature reaches the adjusted set temperature;

Calculating average errors of the indoor actual temperature change curve and the indoor predicted temperature change curve;

adjusting the time constant according to the average error;

the obtaining the load indication temperature at the current moment comprises the following steps:

acquiring a set temperature at the current moment;

acquiring indoor predicted temperature at the current moment;

and determining the load indication temperature at the current moment according to the set temperature at the current moment, the indoor predicted temperature at the current moment and the indoor actual temperature at the current moment.

2. The method of claim 1, wherein said adjusting said time constant based on said average error comprises:

Judging the running mode of the air conditioning equipment under the condition that the average error is larger than a first preset average error;

if the operation mode of the air conditioning equipment is a heating mode, the time constant is increased;

if the operation mode of the air conditioning apparatus is a cooling mode, the time constant is adjusted down.

3. The method of claim 2, wherein said adjusting said time constant based on said average error comprises:

judging the operation mode of the air conditioning equipment under the condition that the average error is smaller than a second preset average error; wherein the second preset average error is smaller than the first preset average error;

if the operation mode of the air conditioning equipment is a heating mode, the time constant is reduced;

If the operation mode of the air conditioning apparatus is a cooling mode, the time constant is adjusted to be large.

4. A method according to claim 3, wherein said adjusting said time constant based on said average error comprises:

and under the condition that the average error is larger than or equal to the second preset average error and smaller than or equal to the first preset average error, the time constant is not adjusted.

5. The method of claim 1, wherein monitoring the actual indoor temperature until the adjusted set temperature is reached comprises:

judging whether Wen Tingji is reached;

And under the condition of stopping the machine when the temperature is not reached, judging whether the indoor actual temperature reaches the regulated set temperature.

6. The method according to claim 1, wherein the current time is denoted as a 0 th time, the subsequent time includes an nth time after the current time, n is a positive integer, and determining the temperature change value at the subsequent time according to the actual temperature of the heat exchanger at the current time, the indoor actual temperature at the current time, and the load indication temperature at the current time includes:

Acquiring a temperature change coefficient;

Performing n-time cyclic processes, wherein the ith cyclic process includes: determining a first temperature change value according to the temperature of the heat exchanger at the i-1 moment, the indoor actual temperature at the i-1 moment and the temperature change coefficient;

Determining a second temperature change value according to the indoor actual temperature at the i-1 time and the load indication temperature at the i-1 time;

And determining a temperature change value at the ith moment according to the first temperature change value and the second temperature change value, wherein the value of i is a positive integer less than or equal to n.

7. The method of claim 6, wherein determining the temperature change value at the i-th time based on the first temperature change value and the second temperature change value comprises:

Subtracting the first temperature change value from the second temperature change value to obtain a temperature change value at the i-th moment when the operation mode of the air conditioning equipment is a refrigeration mode;

and subtracting the second temperature change value from the first temperature change value to obtain the temperature change value at the i-th moment when the operation mode of the air conditioning equipment is a heating mode.

8. The method of claim 6, wherein said determining the predicted indoor temperature at the subsequent time based on the actual indoor temperature at the current time and the temperature change value at the subsequent time comprises:

And adding the temperature change value at the ith moment to the indoor actual temperature at the ith-1 moment to obtain the indoor predicted temperature at the ith moment.

9. The method of any of claims 6-8, the obtaining a temperature coefficient of variation comprising:

Determining the temperature change coefficient according to the target temperature of the heat exchanger and the target air supply parameter of the fan of the indoor unit; the target temperature and the target air supply parameter are the heat exchanger temperature and the air supply parameter of the fan, which correspond to the optimal energy efficiency point of the air conditioning equipment when the current load demand is met.

10. A control device of an air conditioning apparatus, characterized by comprising:

the acquisition module is used for acquiring the initialized time constant and the adjusted set temperature;

The monitoring module is used for monitoring the indoor actual temperature until reaching the adjusted set temperature;

The generation module is used for generating an indoor actual temperature change curve according to the indoor actual temperature monitored every preset time in the process that the indoor actual temperature reaches the adjusted set temperature;

the prediction module is used for predicting a temperature change curve in the process that the indoor actual temperature reaches the adjusted set temperature according to the time constant, and generating an indoor predicted temperature change curve;

The calculating module is used for calculating the average error of the indoor actual temperature change curve and the indoor predicted temperature change curve;

the adjusting module is used for adjusting the time constant according to the average error;

The prediction module comprises:

The first prediction unit is used for predicting indoor prediction temperature at the current moment according to the time constant;

a second prediction unit for predicting an indoor predicted temperature at a subsequent time after the current time according to an indoor actual temperature at the current time;

the first prediction unit includes:

the first acquisition subunit is used for acquiring the load indication temperature at the previous moment according to the time constant;

the second acquisition subunit is used for acquiring the indoor predicted temperature at the previous moment according to the time constant;

A first determination subunit configured to determine an indoor predicted temperature at the current time according to the load indication temperature at the previous time and the indoor predicted temperature at the previous time;

The second prediction unit includes:

A third obtaining subunit, configured to obtain an actual temperature of a heat exchanger of an indoor unit of the air conditioning apparatus at a current moment;

A fourth obtaining subunit, configured to obtain an indoor actual temperature at the current time and a load indication temperature at the current time;

A second determining subunit, configured to determine a temperature change value at a subsequent time according to an actual temperature of the heat exchanger at the current time, an indoor actual temperature at the current time, and a load indication temperature at the current time;

A third determining subunit, configured to determine an indoor predicted temperature at the subsequent time according to the indoor actual temperature at the current time and the temperature change value at the subsequent time;

when the fourth obtaining subunit obtains the load indication temperature at the current moment, the method includes:

acquiring a set temperature at the current moment;

acquiring indoor predicted temperature at the current moment;

11. The apparatus of claim 10, wherein the adjustment module comprises:

A first judging unit configured to judge an operation mode of the air conditioning apparatus in a case where the average error is greater than a first preset average error;

a first adjusting unit for adjusting the time constant in the case that the operation mode of the air conditioning apparatus is a heating mode;

and a second adjusting unit for adjusting the time constant in the case that the operation mode of the air conditioning apparatus is a cooling mode.

12. The apparatus of claim 11, wherein the adjustment module comprises:

a second judging unit configured to judge an operation mode of the air conditioning apparatus in a case where the average error is smaller than a second preset average error; wherein the second preset average error is smaller than the first preset average error;

A third adjusting unit for adjusting the time constant in the case that the operation mode of the air conditioning apparatus is a heating mode;

and a fourth adjusting unit for adjusting the time constant when the operation mode of the air conditioning device is a cooling mode.

13. The apparatus of claim 12, wherein the adjustment module comprises:

And the fifth adjusting unit is used for not adjusting the time constant under the condition that the average error is larger than or equal to the second preset error and smaller than or equal to the first preset error.

14. The apparatus as recited in claim 13, further comprising:

The first judging module is used for judging whether Wen Tingji is reached or not;

and the second judging module is used for judging whether the indoor actual temperature reaches the adjusted set temperature under the condition of not stopping when the temperature is not reached.

15. The apparatus according to claim 10, wherein the current time is denoted as a0 th time, the subsequent time includes an nth time after the current time, n is a positive integer, and the second determining subunit determines the temperature change value at the subsequent time based on the actual temperature of the heat exchanger at the current time, the indoor actual temperature at the current time, and the load indication temperature at the current time, and includes:

Acquiring a temperature change coefficient;

16. The apparatus of claim 15, wherein the determining the temperature change value at the i-th time based on the first temperature change value and the second temperature change value comprises:

17. The apparatus of claim 15, wherein the third determining subunit, when determining the predicted indoor temperature at the subsequent time based on the actual indoor temperature at the current time and the temperature change value at the subsequent time, comprises:

18. The apparatus of any of claims 15-17, the acquiring a temperature coefficient of variation, comprising:

19. An air conditioning apparatus, comprising: a processor and a memory; wherein the processor runs a program corresponding to the executable program code by reading the executable program code stored in the memory for realizing the control method of the air conditioning apparatus according to any one of claims 1 to 9.

20. A non-transitory computer-readable storage medium having stored thereon a computer program, wherein the computer program, when executed by a processor, implements a control method of an air conditioning apparatus according to any one of claims 1 to 9.