CN112611075B - Fixed-frequency air conditioner, controller, anti-condensation control method and storage medium - Google Patents

Abstract

The invention belongs to the technical field of air conditioner control, and discloses a fixed-frequency air conditioner, a controller, an anti-condensation control method and a storage medium, wherein the rotating speed of an inner fan is adjusted through the temperature change rate of an inner pipe, and the inner pipe is connected with an outer fan to be controlled to start and stop, so that the temperature of the inner pipe is higher than the corresponding dew point temperature of an inner ring; meanwhile, the condensation of the air outlet and the air deflector during the operation of the air conditioner is avoided by combining the indoor environment temperature and utilizing an optimization control algorithm; the method specifically comprises the following steps: detecting T_{Inner pipe}、T_{Inner ring}Rate of change, contrast T_{Inner pipe}、T_{Inner ring}A rate of change; adjusting the rotating speed of the inner fan; comparing the temperature of the inner pipe; and performing external fan control. The invention adjusts the rotating speed of the inner fan through the temperature change rate of the inner pipe, and is combined with the on-off control of the outer fan, so that the temperature of the inner pipe is higher than the corresponding dew point temperature of the inner ring, and the air outlet and the air deflector have no condensation during the operation. The invention solves the condensation problem by combining the indoor environment temperature and optimizing the control algorithm on the premise of ensuring the comfort and the practicability of the user.

Description

Fixed-frequency air conditioner, controller, anti-condensation control method and storage medium

Technical Field

The invention belongs to the technical field of air conditioner control, and particularly relates to a fixed-frequency air conditioner, a controller, an anti-condensation control method and a storage medium.

Background

At present, because the compressor frequency is fixed during the operation of the fixed frequency air conditioner, the air outlet temperature is too low under the high humidity environment, condensed water can be generated at an air outlet, and the use experience of consumers is reduced. The addition of the humidity sensor is a means for solving the condensation, but the consumption cost is increased, and the main research approach of the condensation control method is carried out on the control algorithm at present.

CN108397875A provides condensation control for comparing the current change before and after condensation, but has the problem of internal filth blockage misjudgment during use.

CN105910174A discloses a constant frequency air conditioner condensation control method, which improves condensation determination through the change of the air inlet of the internal machine and the change of the wind shield, but does not link with the indoor environment temperature.

Through the above analysis, the problems and defects of the prior art are as follows:

(1) in the prior art, the fixed frequency machine generates condensation at an air outlet when the humidity of the inner side is too high during the cooling operation time, and the condensation water drops.

(2) Moreover, the fixed frequency machine cannot be combined with the indoor environment temperature to realize comfortable operation.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a fixed-frequency air conditioner, a controller, an anti-condensation control method and a storage medium.

The invention is realized in this way, a constant frequency air conditioner condensation prevention control method, the constant frequency air conditioner condensation prevention control method includes:

adjusting the rotating speed of the inner fan through the temperature change rate of the inner pipe, and combining the on-off control of the outer fan to ensure that the temperature of the inner pipe is higher than the corresponding dew point temperature of the inner ring; meanwhile, the condensation of the air outlet and the air deflector during the operation of the air conditioner is avoided by combining the indoor environment temperature and utilizing an optimization control algorithm.

Further, the constant-frequency air conditioner condensation prevention control method specifically comprises the following steps:

step one, detecting T_{Inner pipe}、T_{Inner ring}Rate of change, T_{Inner pipe}Temperature, T, for the bulb of the evaporator of the indoor unit_{Inner ring}Detecting a temperature for an indoor ambient temperature;

step two, comparing T_{Inner pipe}、T_{Inner ring}Variations inA rate;

step three, adjusting the rotating speed of the inner fan;

step four, comparing the temperature of the inner pipe;

and step five, controlling an external fan.

Further, the first step specifically includes: after running for 1 hour, for T_{Inner pipe}Sampling is carried out according to T_{Inner ring}Calculate T_{Calculating dew point temperature}；

A＝T_{Calculating dew point temperature}+ (1-3 ℃); when T is_{Inner pipe}And (4) calculating the descending rate of the T inner tube when the temperature is lower than A ℃, and simultaneously recording the inner ring change rate.

The second step specifically comprises: analyzing the data at the recording time, and analyzing T_{Inner pipe}Defining the following function, the rate of change of temperature V_{Inner pipe}＝f(T_{Inner pipe}) Recording a set of data V every 5S_{Inner pipe}＝(T_n+1-T_n)/t；

And calculates a rate change speed a_{Inner pipe}，a_{Inner pipe}＝f’(T_{Inner pipe}) (ii) a Namely, it is

For T_{Inner ring}Defining the following function, the rate of change of temperature V_{Inner ring}＝f(T_{Inner ring}) Recording a set of data V every 5S_{Inner ring}＝(T_n+1-T_n)/t；

And calculates a rate change speed a_{Inner ring}，a_{Inner ring}＝f’(T_{Inner ring})；

When V is detected_{Inner pipe}Greater than zero and less than threshold S1 and a_{Inner pipe}The rotating speed of the whole machine is less than the threshold value S2 and the current rotating speed is kept unchanged;

when V is detected_{Inner pipe}Greater than zero and equal to or greater than threshold value S1 and a_{Inner pipe}When the speed is larger than or equal to the threshold value S2, the rotating speed of the inner fan is increased by the whole machine at the speed F1 until the windshield reaches the maximum value;

the threshold values S1 and S2 are selected according to the model.

The third step specifically comprises: when V is detected_{Inner pipe}Greater than zero and equal to or greater than threshold value S1 and a_{Inner pipe}When the comparison result is greater than or equal to the threshold value S2, V is compared simultaneously_{Inner ring}And a_{An inner ring is arranged at the inner side of the inner ring,}when V is_{Inner ring}And a_{Inner ring}Is greater than zero and a_{Inner ring}When the rotating speed of the internal fan is larger than the threshold value B, the rotating speed of the internal fan is increased to the maximum windshield by adopting 2 x F1;

the threshold values S1, S2 and B are selected according to the type of the airplane;

the rising damper velocity F1 is greater than the falling damper velocity F.

The fourth step specifically comprises: when the second step and the third step are carried out, the temperature of the inner tube is synchronously judged, and T is detected_{Inner ring}If the calculated dew point is still less than T, performing the control of the outer fan in the fifth step, and controlling the start and stop of the outer fan at the moment, wherein the initial duty ratio is controlled according to 1: 1;

at this time, T is newly determined_{Inner pipe}If T is_{Inner pipe}If the calculated dew point is larger than T, the operation is stopped until the temperature is reached, and if T is larger than T, the operation is stopped_{Inner pipe}Less than T_{Calculating the dew point}Then the duty cycle is increased to 1: 3;

repeating the above determination, operating and maintaining T according to the duty ratio of experiment 1:3_{Inner pipe}Higher than T_{Calculating the dew point}；

When V is detected_{Inner pipe}If the rotating speed of the inner fan is larger than zero, the rotating speed of the inner fan is reduced to a set windshield by f, and V is detected simultaneously in the windshield reducing process_{The inner pipe is provided with a plurality of inner pipes,}and step two is touched, and the execution is continued according to the action of step two.

The joint external fan on-off control makes the inner tube temperature higher than the corresponding dew point temperature of the inner ring, and further comprises:

when the inner pipe temperature is detected to be too low, the outer fan is directly closed or the windshield of the outdoor unit is lowered to raise the temperature of the inner pipe.

The invention also aims to provide a constant-frequency air conditioner controller, which implements the constant-frequency air conditioner condensation prevention control method.

Another object of the present invention is to provide a constant-frequency air conditioner equipped with a controller and implementing the constant-frequency air conditioner condensation prevention control method, the constant-frequency air conditioner further including:

the air conditioner split machine comprises an external fan, an air inlet and outlet grille, a fin through pipe heat exchanger, integrated grille fins, an air outlet and an air deflector.

Another object of the present invention is to provide a computer-readable storage medium storing a computer program which, when executed by a processor, causes the processor to execute the constant-frequency air conditioner anti-condensation control method.

By combining all the technical schemes, the invention has the advantages and positive effects that:

the invention adjusts the rotating speed of the inner fan through the temperature change rate of the inner pipe, and is combined with the on-off control of the outer fan, so that the temperature of the inner pipe is higher than the corresponding dew point temperature of the inner ring, and the air outlet and the air deflector have no condensation during the operation.

The invention solves the condensation problem by combining the indoor environment temperature and optimizing the control algorithm on the premise of ensuring the comfort and the practicability of the user.

The invention is structurally improved and comprises: the air conditioner split machine outer unit, the air inlet and outlet grille, the fin through pipe heat exchanger and the grille fin are integrated, and a hardware implementation basis is provided for the constant frequency air conditioner condensation prevention control.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained from the drawings without creative efforts.

Fig. 1 is a flowchart of a constant-frequency air conditioner condensation prevention control method according to an embodiment of the present invention.

In the figure T_{Inner pipe}Temperature, T, for the bulb of the evaporator of the indoor unit_{Inner ring}The temperature is detected for the indoor ambient temperature.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In view of the problems in the prior art, the present invention provides a constant-frequency air conditioner, a controller, an anti-condensation control method and a storage medium, and the present invention is described in detail below with reference to the accompanying drawings.

As shown in fig. 1, the method for controlling condensation prevention of a fixed-frequency air conditioner according to an embodiment of the present invention includes:

startup detection T_{Inner pipe}And T_{Inner ring}，T_{Inner pipe}Temperature, T, for the bulb of the evaporator of the indoor unit_{Inner ring}The temperature is detected for the indoor ambient temperature.

Step I (detection of T)_{Inner pipe}、T_{Inner ring}Rate of change), for T after 1 hour of operation_{Inner pipe}Sampling is carried out according to T_{Inner ring}Calculate T_{Calculating dew point temperature}。

T_{Calculating dew point temperature}＝f(RH％，T_{Inner ring}) Where humidity is the given value relative humidity of 60%, here the correlation function, the industry fit value.

A＝T_{Calculating dew point temperature}+2 deg.C (adjustable according to the model parameters, and the value can be 1-3 deg.C). When T is_{Inner pipe}And (4) calculating the descending rate of the T inner tube when the temperature is lower than A ℃, and simultaneously recording the inner ring change rate. Step (r) is entered as in fig. 1.

Step two (comparison T)_{Inner pipe}、T_{Inner ring}Rate of change), data analysis is performed on the data at the recording time, and step two is performed on T_{Inner pipe}Defining the following function, the rate of change of temperature V_{Inner pipe}＝f(T_{Inner pipe}) Recording a set of data V every 5S_{Inner pipe}＝(T_n+1-T_n)/t。

And calculates a rate change speed a_{Inner pipe}，a_{Inner pipe}＝f’(T_{Inner pipe}). Namely, it is

For T_{Inner ring}Defining the following function, the rate of change of temperature V_{Inner ring}＝f(T_{Inner ring}) Recording a set of data V every 5S_{Inner ring}＝(T_n+1-T_n)/t。

And calculates a rate change speed a_{Inner ring}，a_{Inner ring}＝f’(T_{Inner ring})。

When V is detected_{Inner pipe}Greater than zero and less than threshold S1 and a_{Inner pipe}The rotating speed of the whole machine is less than the threshold value S2 and the current rotating speed is kept unchanged; at this time, the air conditioner can be judged to have certain dehumidification, but excessive condensation can not be generated, so that the air conditioner is kept unchanged.

When V is detected_{Inner pipe}Greater than zero and equal to or greater than threshold value S1 and a_{Inner pipe}When the speed is larger than or equal to the threshold value S2, the whole machine increases the rotating speed of the inner fan at the speed F1 until the windshield reaches the maximum value. The temperature of the inner pipe rises, the dehumidification amount is reduced, and the air outlet temperature is increased.

Step three (adjusting the rotating speed of the inner fan), when V is detected_{Inner pipe}Greater than zero and equal to or greater than threshold value S1 and a_{Inner pipe}When the comparison result is greater than or equal to the threshold value S2, V is compared simultaneously_{Inner ring}And a_{An inner ring is arranged at the inner side of the inner ring,}when V is_{Inner ring}And a_{Inner ring}Is greater than zero and a_{Inner ring}And when the speed of the internal fan is larger than the threshold value B, the speed of the internal fan is increased to the maximum windshield by 2 x F1. The temperature of the inner pipe is quickly increased, and the temperature of the outlet air is increased.

Step four (comparing the temperature of the inner pipe), synchronously judging step four when step two and step three are carried out, and detecting T when T is detected_{Inner ring}And fifthly, controlling the outer fan when the calculated dew point is still less than T, controlling the outer fan to start and stop at the moment, controlling the initial duty ratio to operate according to 1:1, operating the outer fan at the duty ratio, and increasing the condensation temperature of the system.

At this time, T is newly determined_{Inner pipe}E.g. T_{Inner pipe}If the calculated dew point is larger than T, the system is stopped according to the calculated dew point until the temperature is reached, if T is_{Inner pipe}Less than T_{Calculating the dew point}Then the duty cycle is increased to 1:3, the reason of increasing the duty ratio is to further increase the evaporation temperature, thereby increasing the air outlet temperature.

The above determination is repeated, and T can be maintained according to the 1:3 duty ratio operation of the experiment_{Inner pipe}Higher than T_{Calculating the dew point}。

When V is detected_{Inner pipe}If the rotating speed of the inner fan is larger than zero, the rotating speed of the inner fan is reduced to a set windshield by f, and V is detected simultaneously in the windshield reducing process_{The inner pipe is provided with a plurality of inner pipes,}and the touch step II is continuously executed according to the action II.

When the inner pipe is detected to rise, the rotating speed can be reduced, and the purpose is to reduce the evaporation temperature for dehumidification and cooling. When the air conditioner operates, the indoor humidity can be reduced, the rotating speed can be reduced to the set rotating speed to be maintained along with the reduction of the humidity and the reduction of the room temperature, and the problem of condensation caused by too low temperature at the place is not worried.

In the constant-frequency air conditioner condensation prevention control method provided by the invention, the given thresholds S1, S2 and B are slightly different according to different models.

In the invention, the anti-condensation control method of the fixed-frequency air conditioner is that the speed F1 of the ascending windshield is greater than the speed F of the descending windshield in principle.

In the constant-frequency air conditioner anti-condensation control method provided by the invention, when the inner pipe temperature is detected to be too low, the outer fan is directly closed or the windshield of the outdoor unit is reduced to increase the temperature of the inner pipe.

In the constant-frequency air conditioner anti-condensation control method provided by the invention, the rotating speed value of the inner fan and the set threshold value are greatly changed according to the machine type, or the rotating speed of the inner fan is controlled according to the inner ring change rate.

The invention also provides a constant-frequency air conditioner controller, and the constant-frequency air conditioner controller implements the constant-frequency air conditioner anti-condensation control method.

The invention also provides a fixed-frequency air conditioner, which is provided with a controller and implements the anti-condensation control method of the fixed-frequency air conditioner, and the fixed-frequency air conditioner further comprises the following steps:

the air conditioner split machine comprises an external fan, an air inlet and outlet grille, a fin through pipe heat exchanger, integrated grille fins, an air outlet and an air deflector.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

It should be noted that the embodiments of the present invention can be realized by hardware, software, or a combination of software and hardware. The hardware portion may be implemented using dedicated logic; the software portions may be stored in a memory and executed by a suitable instruction execution system, such as a microprocessor or specially designed hardware. Those skilled in the art will appreciate that the apparatus and methods described above may be implemented using computer executable instructions and/or embodied in processor control code, such code being provided on a carrier medium such as a disk, CD-or DVD-ROM, programmable memory such as read only memory (firmware), or a data carrier such as an optical or electronic signal carrier, for example. The apparatus and its modules of the present invention may be implemented by hardware circuits such as very large scale integrated circuits or gate arrays, semiconductors such as logic chips, transistors, or programmable hardware devices such as field programmable gate arrays, programmable logic devices, etc., or by software executed by various types of processors, or by a combination of hardware circuits and software, e.g., firmware.

The above description is only for the purpose of illustrating the present invention and the appended claims are not to be construed as limiting the scope of the invention, which is intended to cover all modifications, equivalents and improvements that are within the spirit and scope of the invention as defined by the appended claims.

Claims (5)

1. The constant-frequency air conditioner anti-condensation control method is characterized by comprising the following steps:

adjusting the rotating speed of the inner fan through the temperature change rate of the inner pipe, and combining the on-off control of the outer fan to ensure that the temperature of the inner pipe is higher than the corresponding dew point temperature of the inner ring; meanwhile, the air conditioner realizes no condensation of the air outlet and the air deflector during the operation period by combining the indoor environment temperature and utilizing an optimized control algorithm,

the constant-frequency air conditioner condensation prevention control method specifically comprises the following steps:

step one, detecting T_{Inner pipe}、T_{Inner ring}Rate of change, T_{Inner pipe}Temperature, T, for the bulb of the evaporator of the indoor unit_{Inner ring}Detecting a temperature for an indoor ambient temperature;

step two, comparing T_{Inner pipe}、T_{Inner ring}A rate of change;

step three, adjusting the rotating speed of the inner fan;

step four, comparing the temperature of the inner pipe;

step five, controlling an external fan,

the first step specifically comprises: after running for 1 hour, for T_{Inner pipe}Sampling is carried out according to T_{Inner ring}Calculate T_{Calculating dew point temperature}；

A＝T_{Calculating dew point temperature}+ (1-3 ℃); when T is_{Inner pipe}When the temperature is lower than A ℃, the descending rate of the T inner tube is calculated, and the change rate of the inner ring is recorded at the same time,

the second step specifically comprises: analyzing the data at the recording time, and analyzing T_{Inner pipe}Defining the following function, the rate of change of temperature V_{Inner pipe}＝f(T_{Inner pipe}) Recording a set of data V every 5S_{Inner pipe}＝(T_n+1-T_n)/t；

And calculates a rate change speed a_{Inner pipe}，a_{Inner pipe}＝f’(T_{Inner pipe}) (ii) a Namely, it is

For T_{Inner ring}Defining the following function, the rate of change of temperature V_{Inner ring}＝f(T_{Inner ring}) Recording a set of data V every 5S_{Inner ring}＝(T_n+1-T_n)/t；

And calculates a rate change speed a_{Inner ring}，a_{Inner ring}＝f’(T_{Inner ring})；

When V is detected_{Inner pipe}Greater than zero and less than threshold S1 and a_{Inner pipe}The rotating speed of the whole machine is less than the threshold value S2 and the current rotating speed is kept unchanged;

when V is detected_{Inner pipe}Greater than zero and equal to or greater than threshold value S1 and a_{Inner pipe}When the speed is larger than or equal to the threshold value S2, the rotating speed of the inner fan is increased by the whole machine at the speed F1 until the windshield reaches the maximum value;

the thresholds S1 and S2 are selected according to the model,

the third step specifically comprises: when V is detected_{Inner pipe}Greater than zero and equal to or greater than threshold value S1 and a_{Inner pipe}When the comparison result is greater than or equal to the threshold value S2, V is compared simultaneously_{Inner ring}And a_{An inner ring is arranged at the inner side of the inner ring,}when V is_{Inner ring}And a_{Inner ring}Is greater than zero and a_{Inner ring}When the rotating speed of the internal fan is larger than the threshold value B, the rotating speed of the internal fan is increased to the maximum windshield by adopting 2 x F1;

the threshold values S1, S2 and B are selected according to the type of the airplane;

the rising damper velocity F1 is greater than the falling damper velocity F,

the fourth step specifically comprises: when the second step and the third step are carried out, the temperature of the inner tube is synchronously judged, and T is detected_{Inner ring}If the calculated dew point is still less than T, performing the control of the outer fan in the fifth step, and controlling the start and stop of the outer fan at the moment, wherein the initial duty ratio is controlled according to 1: 1;

at this time, T is newly determined_{Inner pipe}If T is_{Inner pipe}If the calculated dew point is larger than T, the operation is carried out according to the calculated dew pointMoving to the point of reaching the temperature and stopping the machine if T_{Inner pipe}Less than T_{Calculating the dew point}Then the duty cycle is increased to 1: 3;

repeating the above determination, operating and maintaining T according to the duty ratio of experiment 1:3_{Inner pipe}Higher than T_{Calculating the dew point}(ii) a When V is detected_{Inner pipe}If the rotating speed of the inner fan is larger than zero, the rotating speed of the inner fan is reduced to a set windshield by f, and V is detected simultaneously in the windshield reducing process_{The inner pipe is provided with a plurality of inner pipes,}and step two is touched, and the execution is continued according to the action of step two.

2. The constant-frequency air conditioner anti-condensation control method of claim 1, wherein the combination of the external fan on-off control makes the temperature of the internal pipe higher than the corresponding dew point temperature of the internal ring, further comprising:

when the inner pipe temperature is detected to be too low, the outer fan is directly closed or the windshield of the outdoor unit is lowered to raise the temperature of the inner pipe.

3. A constant-frequency air conditioner controller, characterized in that the constant-frequency air conditioner controller implements the constant-frequency air conditioner anti-condensation control method of any one of claims 1 to 2.

4. A constant-frequency air conditioner equipped with the controller according to claim 3 and implementing the constant-frequency air conditioner condensation prevention control method according to any one of claims 1 to 2, the constant-frequency air conditioner further comprising:

the air conditioner split machine comprises an external fan, an air inlet and outlet grille, a fin through pipe heat exchanger, integrated grille fins, an air outlet and an air deflector.

5. A computer-readable storage medium storing a computer program which, when executed by a processor, causes the processor to execute the constant frequency air conditioner anti-condensation control method according to any one of claims 1 to 2.

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