CN111121221B - Low temperature control method, device and storage medium - Google Patents

Low temperature control method, device and storage medium Download PDF

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Publication number
CN111121221B
CN111121221B CN201911425926.4A CN201911425926A CN111121221B CN 111121221 B CN111121221 B CN 111121221B CN 201911425926 A CN201911425926 A CN 201911425926A CN 111121221 B CN111121221 B CN 111121221B
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temperature
frequency
target
preset
value
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CN111121221A (en
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冼志健
周竞强
龙俊云
王晓天
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TCL Air Conditioner Zhongshan Co Ltd
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TCL Air Conditioner Zhongshan Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/56—Remote control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature

Abstract

The invention discloses a low-temperature control method. The method comprises the following steps: acquiring a target air outlet temperature value and an inner pipe temperature value; calculating the difference value between the inner pipe temperature value and the target outlet air temperature value to obtain an inner pipe temperature difference value; and acquiring the current frequency of the compressor, calculating the target operation frequency of the compressor according to the current frequency and the temperature difference value of the inner pipe, and controlling the compressor to operate according to the target operation frequency. The invention also discloses a low-temperature control device and a computer readable storage medium. The invention can realize constant low-temperature air outlet.

Description

Low temperature control method, device and storage medium
Technical Field
The invention relates to the technical field of refrigeration, in particular to a low-temperature control method, a low-temperature control device and a computer readable storage medium.
Background
With the continuous development of modern society, people have more and more common use of air conditioners, and in the air conditioners, the frequency conversion technology also enters the lives of people. The inverter air conditioner is a technology for changing the operating speed of a compressor by changing the frequency of a power supply through an inverter.
However, at present, the existing inverter air conditioner cannot realize constant ultralow-temperature air outlet and does not increase the air conditioner cost.
Disclosure of Invention
The invention mainly aims to provide a low-temperature control method, a low-temperature control device and a computer readable storage medium, and aims to realize constant low-temperature air outlet.
In order to achieve the above object, the present invention provides a low temperature control method, including the steps of:
acquiring a target air outlet temperature value and an inner pipe temperature value;
calculating the difference value between the inner pipe temperature value and the target outlet air temperature value to obtain an inner pipe temperature difference value;
and acquiring the current frequency of the compressor, calculating the target operation frequency of the compressor according to the current frequency and the temperature difference value of the inner pipe, and controlling the compressor to operate according to the target operation frequency.
Optionally, the step of obtaining the target outlet air temperature value includes:
receiving a low-temperature wind control instruction of a user;
and acquiring a target air outlet temperature value according to the low-temperature air control instruction.
Optionally, the step of calculating a target operating frequency of the compressor according to the current frequency and the difference between the temperatures of the inner pipes includes:
calculating the target operation frequency of the compressor by using a preset formula according to the current frequency and the temperature difference value of the inner pipe;
the preset formula is as follows:
F(target operating frequency)＝F(Current operating frequency)+K1(Frequency adjustment factor)*ΔT(Inner pipe)；
Wherein, F(target operating frequency)Is the target operating frequency of the compressor, F(Current operating frequency)For the current frequency, K1 (frequency adjusting parameter)Adjusting the parameter, DeltaT, for a predetermined frequency(inner tube)Is the difference in temperature of the inner tube.
Optionally, the low temperature control method further comprises the following steps:
obtaining an internal environment temperature, and calculating a difference value between the internal environment temperature and the target outlet air temperature value to obtain an inner ring temperature difference value;
judging whether the inner ring temperature difference value is smaller than a preset first threshold value or not, and whether the target operation frequency is smaller than a preset interval maximum frequency or not;
and if the temperature difference value of the inner ring is smaller than a preset first threshold value and the target operation frequency is smaller than the maximum frequency of a preset interval, controlling the compressor to operate according to a preset fixed frequency.
Optionally, the low temperature control method further comprises the following steps:
judging whether the inner ring temperature difference value is larger than a preset second threshold value within preset time or not, and whether the target operation frequency is the maximum frequency of a preset interval within the preset time or not;
and if the inner ring temperature difference value is greater than a preset second threshold value within the preset time and the target operation frequency is the maximum frequency of the preset interval within the preset time, controlling the compressor to continuously operate according to the maximum frequency of the preset interval, and adjusting the rotating speed of the internal machine according to a preset rule.
Optionally, the step of adjusting the rotation speed of the internal machine according to a preset rule includes:
acquiring the current rotating speed of the internal machine;
and calculating the target rotating speed of the internal machine by using a preset rotating speed formula according to the current rotating speed of the internal machine and the temperature difference value of the internal pipe, and controlling the internal machine to operate according to the target rotating speed.
Optionally, the preset rotation speed formula is:
R(target rotational speed)＝R(Current speed of rotation)+K2(Coefficient of rotation speed adjustment)*ΔT(Inner pipe)；
Wherein R is(target rotational speed)Target rotation speed of the internal machine, R(Current rotational speed)Is the current rotation speed of the internal machine, K2 (rotation speed adjusting coefficient)Adjusting the parameter, DeltaT, for a predetermined rotational speed(inner tube)Is the difference in temperature of the inner tube.
Optionally, the low temperature control method further comprises the following steps:
receiving a closing instruction;
and closing the operation of the compressor and the internal machine according to the closing instruction.
In addition, to achieve the above object, the present invention also provides a low temperature control apparatus comprising: the system comprises a memory, a processor and a low-temperature control program stored on the memory and capable of running on the processor, wherein the low-temperature control program realizes the steps of the low-temperature control method when being executed by the processor.
In addition, to achieve the above object, the present invention also provides a computer readable storage medium having a low temperature control program stored thereon, the low temperature control program implementing the steps of the above low temperature control method when executed by a processor.
The invention provides a low-temperature control method, a low-temperature control device and a computer storage medium. In the method, a target outlet air temperature value and an inner tube temperature value are obtained; calculating the difference value between the inner pipe temperature value and the target outlet air temperature value to obtain an inner pipe temperature difference value; and acquiring the current frequency of the compressor, calculating the target operation frequency of the compressor according to the current frequency and the temperature difference value of the inner pipe, and controlling the compressor to operate according to the target operation frequency. Through the mode, the invention can determine a target operation frequency according to the target air outlet temperature value, the inner pipe temperature value and the current frequency of the compressor, and control the refrigeration equipment to operate according to the target operation frequency, thereby achieving the purpose of constant low-temperature air outlet. The method of the invention does not improve the appearance of the refrigeration equipment, but achieves the purpose of constant ultralow temperature air outlet by designing a set of software function control logic, does not need to increase the cost of the air conditioner, and can realize multi-temperature selection of users according to different application scenes.
Drawings
FIG. 1 is a schematic diagram of an apparatus in a hardware operating environment according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart of a first embodiment of the low temperature control method of the present invention;
FIG. 3 is a schematic flow chart of a second embodiment of the low temperature control method of the present invention;
FIG. 4 is a schematic flow chart of a third embodiment of the low temperature control method of the present invention;
FIG. 5 is a schematic flow chart of a fourth embodiment of the low temperature control method of the present invention;
FIG. 6 is a schematic flow chart of a fifth embodiment of the low temperature control method of the present invention;
FIG. 7 is a flowchart illustrating a sixth embodiment of a low temperature control method according to the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, fig. 1 is a schematic device structure diagram of a hardware operating environment according to an embodiment of the present invention.
The terminal of the embodiment of the invention can be a PC, and can also be a terminal device with a data processing function, such as a smart phone, a tablet computer, a portable computer and the like.
As shown in fig. 1, the terminal may include: a processor 1001, such as a CPU, a network interface 1004, a user interface 1003, a memory 1005, a communication bus 1002. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display screen (Display), an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface). The memory 1005 may be a high-speed RAM memory or a non-volatile memory (e.g., a magnetic disk memory). The memory 1005 may alternatively be a storage device separate from the processor 1001.
Optionally, the terminal may further include a camera, a Radio Frequency (RF) circuit, a sensor, an audio circuit, a Wi-Fi module, and the like. Such as light sensors, motion sensors, and other sensors. Specifically, the light sensor may include an ambient light sensor that may adjust the brightness of the display screen according to the brightness of ambient light, and a proximity sensor that may turn off the display screen and/or the backlight when the mobile terminal is moved to the ear. As one of the motion sensors, the gravity acceleration sensor can detect the magnitude of acceleration in each direction (generally, three axes), detect the magnitude and direction of gravity when the mobile terminal is stationary, and can be used for applications (such as horizontal and vertical screen switching, related games, magnetometer attitude calibration), vibration recognition related functions (such as pedometer and tapping) and the like for recognizing the attitude of the mobile terminal; of course, the mobile terminal may also be configured with other sensors such as a gyroscope, a barometer, a hygrometer, a thermometer, and an infrared sensor, which are not described herein again.
Those skilled in the art will appreciate that the terminal structure shown in fig. 1 is not intended to be limiting and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
As shown in fig. 1, a memory 1005, which is a kind of computer storage medium, may include therein an operating system, a network communication module, a user interface module, and a low temperature control program.
In the terminal shown in fig. 1, the network interface 1004 is mainly used for connecting to a backend server and performing data communication with the backend server; the user interface 1003 is mainly used for connecting a client (user side) and performing data communication with the client; and the processor 1001 may be configured to call the low temperature control program stored in the memory 1005 and perform the following operations:
acquiring a target air outlet temperature value and an inner pipe temperature value;
calculating the difference value between the inner pipe temperature value and the target outlet air temperature value to obtain an inner pipe temperature difference value;
and acquiring the current frequency of the compressor, calculating the target operation frequency of the compressor according to the current frequency and the temperature difference value of the inner pipe, and controlling the compressor to operate according to the target operation frequency.
Further, the processor 1001 may call the low temperature control program stored in the memory 1005, and also perform the following operations:
the step of obtaining the target outlet air temperature value comprises the following steps:
receiving a low-temperature wind control instruction of a user;
and acquiring a target air outlet temperature value according to the low-temperature air control instruction.
Further, the processor 1001 may call the low temperature control program stored in the memory 1005, and also perform the following operations:
the step of calculating the target operating frequency of the compressor according to the current frequency and the inner pipe temperature difference value includes:
calculating the target operation frequency of the compressor by using a preset formula according to the current frequency and the temperature difference value of the inner pipe;
the preset formula is as follows:
F(target operating frequency)＝F(Current operating frequency)+K1 (frequency adjustment factor)*ΔT(inner tube)
Wherein, F(target operating frequency)Is the target operating frequency of the compressor, F(Current operating frequency)For the current frequency, K1 (frequency adjusting parameter)Adjusting the parameter, DeltaT, for a predetermined frequency(inner tube)Is the difference in temperature of the inner tube.
Further, the processor 1001 may call the low temperature control program stored in the memory 1005, and also perform the following operations:
the low temperature control method further comprises the following steps:
obtaining an internal environment temperature, and calculating a difference value between the internal environment temperature and the target outlet air temperature value to obtain an inner ring temperature difference value;
judging whether the inner ring temperature difference value is smaller than a preset first threshold value or not, and whether the target operation frequency is smaller than a preset interval maximum frequency or not;
and if the temperature difference value of the inner ring is smaller than a preset first threshold value and the target operation frequency is smaller than the maximum frequency of a preset interval, controlling the compressor to operate according to a preset fixed frequency.
Further, the processor 1001 may call the low temperature control program stored in the memory 1005, and also perform the following operations:
the low temperature control method further comprises the following steps:
judging whether the inner ring temperature difference value is larger than a preset second threshold value within preset time or not, and whether the target operation frequency is the maximum frequency of a preset interval within the preset time or not;
and if the inner ring temperature difference value is greater than a preset second threshold value within the preset time and the target operation frequency is the maximum frequency of the preset interval within the preset time, controlling the compressor to continuously operate according to the maximum frequency of the preset interval, and adjusting the rotating speed of the internal machine according to a preset rule.
Further, the processor 1001 may call the low temperature control program stored in the memory 1005, and also perform the following operations:
the step of adjusting the rotating speed of the internal machine according to the preset rule comprises the following steps:
acquiring the current rotating speed of the internal machine;
and calculating the target rotating speed of the internal machine by using a preset rotating speed formula according to the current rotating speed of the internal machine and the temperature difference value of the internal pipe, and controlling the internal machine to operate according to the target rotating speed.
Further, the processor 1001 may call the low temperature control program stored in the memory 1005, and also perform the following operations:
the preset rotating speed formula is as follows:
R(target rotational speed)＝R(Current rotational speed)+K2 (rotation speed adjusting coefficient)*ΔT(inner tube)
Wherein R is(target rotational speed)Target rotation speed of the internal machine, R(Current rotational speed)Is the current rotation speed of the internal machine, K2 (rotation speed adjusting coefficient)Adjusting the parameter, DeltaT, for a predetermined rotational speed(inner tube)Is the difference in temperature of the inner tube.
Further, the processor 1001 may call the low temperature control program stored in the memory 1005, and also perform the following operations:
the low temperature control method further comprises the following steps:
receiving a closing instruction;
and closing the operation of the compressor and the internal machine according to the closing instruction.
The specific embodiment of the low temperature control apparatus of the present invention is substantially the same as the embodiments of the low temperature control method described below, and will not be described herein again.
Referring to fig. 2, fig. 2 is a schematic flow chart of a low temperature control method according to a first embodiment of the present invention, the low temperature control method includes:
step S100, acquiring a target air outlet temperature value and an inner tube temperature value;
the refrigeration equipment in the implementation method has no difference in appearance from the conventional refrigeration equipment, so that the manufacturing cost is not increased in the implementation method, and a new functional logic is designed only on software to achieve the effect of constant ultralow-temperature air outlet. The set temperature of a conventional refrigeration device can only be set to 16-31 deg.c. The target outlet air temperature value in the implementation method can be a lower temperature value, such as 8 ℃, 10 ℃, 12 ℃ and 14 ℃, or other lower set temperature. The target outlet air temperature value is set according to the requirement of a user, for example, obtained by the temperature set by the user on the remote controller of the refrigeration equipment. The temperature value of the inner pipe is the temperature value of the inner pipe of the refrigeration equipment, and can be obtained through a temperature sensor, and of course, can also be obtained through other modes. When the user needs to execute the low-temperature air function, namely after receiving a low-temperature air instruction, the user enters the low-temperature air function to obtain a target air outlet temperature value and an inner pipe temperature value.
Step S200, calculating the difference value between the inner pipe temperature value and the target outlet air temperature value to obtain an inner pipe temperature difference value;
after the target outlet air temperature value and the inner tube temperature value are obtained, a difference value between the inner tube temperature value and the target outlet air temperature value can be calculated, and an inner tube temperature difference value is obtained. Specifically, the inner tube temperature difference value can be calculated by the following formula.
ΔT(inner tube)＝T(inner tube)-TTarget value of outlet air temperature；
Wherein, Delta T(inner tube)Is the difference in temperature of the inner tube, T(inner tube)The temperature value of the inner pipe is shown, and the T air outlet temperature target value is a marked air outlet temperature value.
And step S300, acquiring the current frequency of the compressor, calculating the target operation frequency of the compressor according to the current frequency and the temperature difference value of the inner pipe, and controlling the compressor to operate according to the target operation frequency.
After the inner pipe temperature difference is obtained through calculation, the current frequency of the compressor can be obtained, the target operation frequency of the compressor is calculated according to the current frequency and the inner pipe temperature difference, and the compressor is controlled to operate according to the target operation frequency. I.e. frequency adjustment is performed first. And determining a target operation frequency according to the current frequency and the temperature difference value of the inner pipe, and further controlling the refrigeration equipment to operate and refrigerate according to the target operation frequency. At this time, the inner machine windshield may be set as a low windshield by default in the process of frequency adjustment.
Further, step S300 may include:
step S310, calculating a target operation frequency of the compressor by using a preset formula according to the current frequency and the temperature difference value of the inner pipe;
namely, the target operating frequency can be obtained by calculating according to the current frequency and the temperature difference value of the inner tube by using the following formula. The preset formula is as follows:
F(target operating frequency)＝F(Current operating frequency)+K1 (frequency adjustment factor)*ΔT(inner tube)；
Wherein, F(target operating frequency)Is the target operating frequency of the compressor, F(Current operating frequency)For the current frequency, K1 (frequency adjusting parameter)Adjusting the parameter, DeltaT, for a predetermined frequency(inner tube)Is the difference in temperature of the inner tube.
In the above formula, K1 frequency adjustment parameterDifferent values, different models and K can be selected and set according to different models1 frequency adjustment parameterDifferent. Meanwhile, in this embodiment, a frequency adjustment interval time, i.e., a frequency determination time of T1, e.g., 30s, may be set, i.e., each T1And (4) judging the time by the frequency, calculating the target operation frequency once, and correspondingly controlling the refrigeration equipment according to the calculated target operation frequency.
The invention provides a low-temperature control method, a low-temperature control device and a computer storage medium. In the method, a target outlet air temperature value and an inner tube temperature value are obtained; calculating the difference value between the inner pipe temperature value and the target outlet air temperature value to obtain an inner pipe temperature difference value; and acquiring the current frequency of the compressor, calculating the target operation frequency of the compressor according to the current frequency and the temperature difference value of the inner pipe, and controlling the compressor to operate according to the target operation frequency. Through the mode, the invention can determine a target operation frequency according to the target air outlet temperature value, the inner pipe temperature value and the current frequency of the compressor, and control the refrigeration equipment to operate according to the target operation frequency, thereby achieving the purpose of constant low-temperature air outlet. The method of the invention does not improve the appearance of the refrigeration equipment, but achieves the purpose of constant ultralow temperature air outlet by designing a set of software function control logic, does not need to increase the cost of the air conditioner, and can realize multi-temperature selection of users according to different application scenes.
Referring to fig. 3, fig. 3 is a flowchart illustrating a low temperature control method according to a second embodiment of the invention.
Based on the foregoing embodiment, in this embodiment, step S100 includes:
step S110, receiving a low-temperature wind control instruction of a user;
in this embodiment, a low-temperature wind control instruction of a user is received, specifically, the low-temperature wind control instruction of the user may be received through a remote controller, or may be received through other manners, such as a voice instruction.
And step S120, acquiring a target air outlet temperature value according to the low-temperature air control instruction.
And obtaining a target air outlet temperature value set by a user according to a low-temperature air control instruction of the user. If the user sets the target outlet air temperature value to be 10 ℃ on the remote controller, the remote controller sends the set target outlet air temperature value to the refrigeration equipment, and the refrigeration equipment receives and acquires the target outlet air temperature value set by the user to be 10 ℃.
Referring to fig. 4, fig. 4 is a schematic flow chart illustrating a low temperature control method according to a third embodiment of the present invention.
Based on the above embodiment, the present embodiment further includes the following steps:
step S400, obtaining an internal environment temperature, calculating a difference value between the internal environment temperature and the target outlet air temperature value, and obtaining an inner ring temperature difference value;
in this embodiment, the internal ambient temperature, that is, the indoor ambient temperature, may also be obtained by providing an indoor temperature sensor, or may be obtained by other means. After the internal environment temperature is obtained, the difference between the internal environment temperature and the target outlet air temperature value can be calculated according to the internal environment temperature, and an inner ring temperature difference value is obtained. Specifically, it can be calculated by the following formula:
ΔT(inner ring)＝T(inner ring)-TTarget value of outlet air temperature；
Wherein, Delta T(inner ring)Is the difference of the inner ring temperature, T(inner ring)Is the internal ambient temperature, TTarget value of outlet air temperatureThe wind temperature values are indicated.
Step S500, judging whether the inner ring temperature difference value is smaller than a preset first threshold value or not, and whether the target operation frequency is smaller than a preset interval maximum frequency or not;
after the inner ring temperature difference is obtained, the operation of the compressor can be correspondingly controlled according to whether the inner ring temperature difference is smaller than a preset first threshold value and whether the calculated target operation frequency is smaller than the maximum frequency of a preset interval.
If the inner ring temperature difference is smaller than a preset first threshold and the target operating frequency is smaller than a preset interval maximum frequency, executing step S510: and controlling the compressor to operate according to a preset fixed frequency.
If the inner ring temperature difference is smaller than a preset first threshold value and the target operation frequency is smaller than the maximum frequency of a preset interval, namely F(target operating frequency)≤F(Interval maximum frequency)，△T(inner ring)And controlling the compressor to operate according to a preset fixed frequency when the temperature is less than or equal to X ℃ and X is a preset first threshold value. The frequency of the refrigeration equipment is controlled to be constant and the windshield is controlled to be constant when the condition is reached, and the air outlet temperature is the air outlet temperature target value within the allowable deviation range. This embodiment is through inner disc, ambient temperature to set for the temperature and be equal to the air-out temperature, combine adjustment coefficient to carry out frequency adjustment through coil pipe temperature difference.
Referring to fig. 5, fig. 5 is a schematic flow chart of a low temperature control method according to a fourth embodiment of the invention.
Based on the above embodiment, the present embodiment further includes the following steps:
step S600, judging whether the inner ring temperature difference value is larger than a preset second threshold value within preset time, and whether the target operation frequency is the maximum frequency of a preset interval within the preset time;
in this embodiment, after obtaining the inner ring temperature difference, it is determined whether the inner ring temperature difference is greater than a preset second threshold within a preset time, and whether the target operating frequency is a preset maximum interval frequency within the preset time. The preset second threshold is a temperature threshold set by a system, and the maximum frequency of the preset interval is the maximum running frequency of the internal machine.
If the inner ring temperature difference is greater than a preset second threshold within a preset time, and the target operating frequency is a preset interval maximum frequency within a preset time, executing step S610: and controlling the compressor to continuously run according to the maximum frequency of the preset interval, and adjusting the rotating speed of the internal machine according to a preset rule.
If the inner ring temperature difference value is judged to be larger than a preset second threshold value within the preset time, and the target operation frequency is the maximum frequency of a preset interval within the preset time, namely delta T(inner ring)＞Y℃，F(target operating frequency)＝F(Interval maximum frequency)And has been continuously operated T2And maintaining the maximum frequency control during the continuous operation time, executing the wind speed adjustment of the internal machine, and adjusting the low wind shield into stepless speed regulation, namely adjusting the rotating speed of the internal machine according to a preset rule. Y is a preset second threshold value, T2The duration of operation being a predetermined time, F(Interval maximum frequency)Is the maximum frequency of the preset interval.
Referring to fig. 6, fig. 6 is a flowchart illustrating a low temperature control method according to a fifth embodiment of the invention.
Based on the foregoing embodiment, in this embodiment, step S610 includes:
step S611, obtaining the current rotating speed of the internal machine;
in this embodiment, the rotation speed of the internal machine is adjusted according to the preset rule, and the current rotation speed of the internal machine may also be obtained first, and the current rotation speed of the internal machine may be obtained by a rotation speed measurement device, or may be obtained by other methods, which is not limited in this embodiment.
And step S612, calculating the target rotating speed of the internal machine by using a preset rotating speed formula according to the current rotating speed of the internal machine and the temperature difference value of the internal pipe, and controlling the internal machine to operate according to the target rotating speed.
And after the current rotating speed of the internal machine is obtained, calculating the target rotating speed of the internal machine by using a preset rotating speed formula according to the current rotating speed of the internal machine and the temperature difference value of the internal pipe, and controlling the internal machine to operate according to the target rotating speed.
The preset rotating speed formula is as follows:
R(target rotational speed)＝R(Current rotational speed)+K2 (rotation speed adjusting coefficient)*ΔT(inner tube)；
Wherein R is(target rotational speed)Target rotation speed of the internal machine, R(Current rotational speed)Is the current rotation speed of the internal machine, K2 (rotation speed adjusting coefficient)Adjusting the parameter, DeltaT, for a predetermined rotational speed(inner tube)Is the difference in temperature of the inner tube.
Further, in this embodiment, if T within the predetermined time is determined3Judging time by the rotating speed, and if the rotating speed meets the conditions: the target temperature value of air outlet is less than or equal to T at-1 DEG C(inner tube)And when the air outlet target temperature value is less than or equal to +1 ℃, controlling the rotating speed of the internal machine to be constant. The embodiment realizes stepless speed regulation in a certain mode through software, has adjustable rotating speed range and very fine function of meeting constant low-temperature air.
Referring to fig. 7, fig. 7 is a flowchart illustrating a low temperature control method according to a sixth embodiment of the invention.
Based on the above embodiment, the present embodiment further includes the following steps:
step S700, receiving a closing instruction;
in this embodiment, a close instruction is received, where the close instruction may be obtained by a shutdown signal of a remote controller, or may be obtained by a mode switching signal of the remote controller, and may also be obtained by other methods.
And step S710, the operation of the compressor and the internal machine is closed according to the closing instruction.
And after the closing instruction is obtained, the operation of the compressor and the internal machine is closed according to the closing instruction, so that the compressor and the internal machine are in a stop state.
In addition, the embodiment of the invention also provides a computer readable storage medium.
The computer-readable storage medium of the present invention has stored thereon a low temperature control program that, when executed by a processor, implements the steps of the low temperature control method as described above.
The method implemented when the low-temperature control program running on the processor is executed may refer to various embodiments of the low-temperature control method of the present invention, and details thereof are not repeated herein.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (9)

1. A low temperature control method, characterized in that the low temperature control method comprises the following steps:
acquiring a target air outlet temperature value and an inner pipe temperature value;
calculating the difference value between the inner pipe temperature value and the target outlet air temperature value to obtain an inner pipe temperature difference value;
acquiring the current frequency of a compressor, and calculating the target operation frequency of the compressor according to the current frequency and the temperature difference value of the inner pipe, wherein the target operation frequency is calculated according to a preset frequency adjustment interval time;
obtaining an internal environment temperature, and calculating a difference value between the internal environment temperature and the target outlet air temperature value to obtain an inner ring temperature difference value;
judging whether the inner ring temperature difference value is smaller than a preset first threshold value or not, and whether the target operation frequency is smaller than a preset interval maximum frequency or not;
and if the temperature difference value of the inner ring is smaller than a preset first threshold value and the target operation frequency is smaller than the maximum frequency of a preset interval, controlling the compressor to operate according to a preset fixed frequency.
2. The low-temperature control method according to claim 1, wherein the step of obtaining the target outlet air temperature value comprises:
receiving a low-temperature wind control instruction of a user;
and acquiring a target air outlet temperature value according to the low-temperature air control instruction.
3. The cryogenic control method of claim 1, wherein the step of calculating a target operating frequency of a compressor based on the current frequency and the difference in inner tube temperature comprises:
calculating the target operation frequency of the compressor by using a preset formula according to the current frequency and the temperature difference value of the inner pipe;
the preset formula is as follows:
F(target operating frequency)＝F(Current operating frequency)+K1 (frequency adjustment factor)*ΔT(inner tube)
Wherein, F(target operating frequency)Is the target operating frequency of the compressor, F(Current operating frequency)For the current frequency, K1 (frequency adjusting parameter)Adjusting the parameter, DeltaT, for a predetermined frequency(inner tube)Is the difference in temperature of the inner tube.
4. The cryogenic control method of claim 1, further comprising the step of:
judging whether the inner ring temperature difference value is larger than a preset second threshold value within preset time or not, and whether the target operation frequency is the maximum frequency of a preset interval within the preset time or not;
and if the inner ring temperature difference value is greater than a preset second threshold value within the preset time and the target operation frequency is the maximum frequency of the preset interval within the preset time, controlling the compressor to continuously operate according to the maximum frequency of the preset interval, and adjusting the rotating speed of the internal machine according to a preset rule.
5. The cryogenic control method of claim 4, wherein the step of adjusting the rotation speed of the internal machine according to the preset rule comprises:
acquiring the current rotating speed of the internal machine;
and calculating the target rotating speed of the internal machine by using a preset rotating speed formula according to the current rotating speed of the internal machine and the temperature difference value of the internal pipe, and controlling the internal machine to operate according to the target rotating speed.
6. The cryogenic control method of claim 5, wherein the predetermined rotational speed formula is:
R(target rotational speed)＝R(Current rotational speed)+K2 (rotation speed adjusting coefficient)*ΔT(inner tube)
Wherein R is(target rotational speed)Target rotation speed of the internal machine, R(Current rotational speed)Is the current rotation speed of the internal machine, K2 (rotation speed adjusting coefficient)Adjusting the parameter, DeltaT, for a predetermined rotational speed(inner tube)Is the difference in temperature of the inner tube.
7. The cryogenic control method of claim 1, further comprising the step of:
receiving a closing instruction;
and closing the operation of the compressor and the internal machine according to the closing instruction.
8. A cryogenic control device, comprising: memory, a processor and a cryogenic control program stored on the memory and executable on the processor, the cryogenic control program when executed by the processor implementing the steps of the cryogenic control method according to any one of claims 1 to 7.
9. A computer-readable storage medium, having stored thereon a cryogenic control program which, when executed by a processor, implements the steps of the cryogenic control method of any one of claims 1 to 7.
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