CN109945427B - Air conditioning equipment control method and device, storage medium and air conditioning equipment - Google Patents
Air conditioning equipment control method and device, storage medium and air conditioning equipment Download PDFInfo
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Abstract
The invention discloses an air conditioning equipment control method, an air conditioning equipment control device, a storage medium and air conditioning equipment, wherein the method comprises the following steps: acquiring the outdoor environment temperature; determining whether to enter low-temperature refrigeration control or not according to the outdoor environment temperature; under the condition that the low-temperature refrigeration control is determined to be started, the running frequency of the compressor is obtained; and controlling the opening degree of the electronic expansion valve and/or the gear of the external fan according to the running frequency of the compressor and the outdoor environment temperature. Through the scheme, the problems that the existing air conditioning equipment runs at low temperature and has low refrigeration efficiency and low reliability are solved, and the technical effects of effectively improving the refrigeration efficiency and the reliability are achieved.
Description
Technical Field
The invention belongs to the technical field of machine equipment, and particularly relates to an air conditioning equipment control method and device, a storage medium and air conditioning equipment.
Background
At present, the application range of the air conditioner is more and more extensive, and air conditioning equipment is needed to adjust the temperature, the humidity and the like of the indoor environment in many scenes. For example, in a data room, room equipment that works continuously for a long time needs to work in a low-temperature environment, and therefore, cooling needs to be performed by air conditioning equipment to cool the room.
When the air conditioner needs to perform cooling operation at low external environment temperature (for example, below 15 ℃), the load of the air conditioner is light, the heat dissipation effect of the outdoor side heat exchanger is good, but the indoor side heat exchanger is easy to frost, the compressor is easy to be liquefied, and the temperature control capability and reliability of the air conditioning equipment are affected.
When the existing air conditioning equipment is used for refrigerating and running in a low-temperature environment, the problems of reduction of the rotating speed of an outdoor fan or intermittent shutdown often exist, so that poor heat dissipation of a controller of an outdoor unit is caused, and the problem of reliability is easily caused by overhigh temperature of a power device of the controller. Furthermore, the air conditioning equipment has the problems that the temperature fluctuation of an outdoor coil pipe is caused by the frequent increase and decrease of the rotating speed or the intermittent shutdown of an outdoor fan in the refrigeration operation in a low-temperature environment, the unstable control of a device for throttling through an electronic expansion valve is easy to cause, and the refrigeration capacity and the reliability are influenced.
In view of the above problems, no effective solution has been proposed.
Disclosure of Invention
The invention aims to provide an air conditioning equipment control method, an air conditioning equipment control device, a storage medium and air conditioning equipment to solve the problems of poor equipment refrigerating capacity and low reliability caused by the fact that the air conditioning equipment operates in a low-temperature state in the prior art.
The invention provides an air conditioning equipment control method, which comprises the following steps:
acquiring the outdoor environment temperature;
determining whether to enter low-temperature refrigeration control or not according to the outdoor environment temperature;
under the condition that the low-temperature refrigeration control is determined to be started, the running frequency of the compressor is obtained;
and controlling the opening degree of the electronic expansion valve and/or the gear of the external fan according to the running frequency of the compressor and the outdoor environment temperature.
In one embodiment, determining whether to enter low temperature refrigeration control based on the outdoor ambient temperature includes:
acquiring a preset low-temperature threshold value;
and determining to enter low-temperature refrigeration control under the conditions that the outdoor environment temperature is less than or equal to the low-temperature threshold value and the duration time reaches the preset time.
In one embodiment, controlling an external fan gear according to the compressor operating frequency and the outdoor ambient temperature includes:
determining a frequency range to which the running frequency of the compressor belongs as a target frequency range;
acquiring a plurality of outer ring temperature intervals corresponding to the target frequency range;
determining an outer ring temperature interval to which the outdoor environment temperature belongs;
and adjusting the gear of the outer fan to a gear range corresponding to an outer ring temperature interval to which the outdoor environment temperature belongs.
In one embodiment, adjusting the outer fan gear to the gear range corresponding to the outer ring temperature range to which the outdoor environment temperature belongs includes:
periodically acquiring the temperature of an indoor heat exchanger coil;
obtaining an average value of the temperature of the coil pipe of the indoor heat exchanger acquired periodically;
and adjusting the gear of the outer fan within the gear range corresponding to the outer ring temperature interval to which the outdoor environment temperature belongs according to the difference value between the average value and the outdoor environment temperature.
In one embodiment, controlling the opening degree of the electronic expansion valve according to the compressor operation frequency and the outdoor ambient temperature includes:
determining a frequency range to which the running frequency of the compressor belongs as a target frequency range;
acquiring a plurality of outer ring temperature intervals corresponding to the target frequency range;
determining an outer ring temperature interval to which the outdoor environment temperature belongs;
and adjusting the gear of the outer fan to the opening degree of the electronic expansion valve corresponding to the outer ring temperature interval to which the outdoor environment temperature belongs.
In one embodiment, controlling the opening degree of the electronic expansion valve according to the compressor operation frequency and the outdoor ambient temperature includes:
determining an outer ring temperature interval to which the outdoor environment temperature belongs;
and adjusting the gear of the outer fan to the opening degree of the electronic expansion valve corresponding to the outer ring temperature interval to which the outdoor environment temperature belongs.
An air conditioning equipment control device comprising:
the first acquisition module is used for acquiring the outdoor environment temperature;
the determining module is used for determining whether to enter low-temperature refrigeration control according to the outdoor environment temperature;
the second acquisition module is used for acquiring the running frequency of the compressor under the condition of determining to enter the low-temperature refrigeration control;
and the control module is used for controlling the opening of the electronic expansion valve and/or the gear of the external fan according to the running frequency of the compressor and the outdoor environment temperature.
In one embodiment, the determining module comprises:
the first acquisition unit is used for acquiring a preset low-temperature threshold;
and the first determining unit is used for determining to enter low-temperature refrigeration control under the condition that the outdoor environment temperature is less than or equal to the low-temperature threshold value and the duration time reaches the preset time length.
In one embodiment, the control module comprises:
a second determining unit for determining a frequency range to which the compressor operating frequency belongs as a target frequency range;
the second acquisition unit is used for acquiring a plurality of outer ring temperature intervals corresponding to the target frequency range;
a third determining unit, configured to determine an outer ring temperature interval to which the outdoor environment temperature belongs;
and the first adjusting unit is used for adjusting the gear of the outer fan to a gear range corresponding to an outer ring temperature interval to which the outdoor environment temperature belongs.
In one embodiment, the first adjusting unit includes:
the acquisition subunit is used for periodically acquiring the temperature of the coil pipe of the indoor heat exchanger;
the calculating subunit is used for calculating the average value of the periodically acquired indoor heat exchanger coil temperature;
and the adjusting subunit is used for adjusting the gear of the outer fan within the gear range corresponding to the outer ring temperature interval to which the outdoor environment temperature belongs according to the difference value between the average value and the outdoor environment temperature.
In one embodiment, the control module comprises:
a fourth determining unit for determining a frequency range to which the compressor operating frequency belongs as a target frequency range;
a third obtaining unit, configured to obtain a plurality of outer ring temperature intervals corresponding to the target frequency range;
a fifth determining unit, configured to determine an outer ring temperature interval to which the outdoor environment temperature belongs;
and the second adjusting unit is used for adjusting the gear of the outer fan to the opening degree of the electronic expansion valve corresponding to the outer ring temperature interval to which the outdoor environment temperature belongs.
An air conditioning apparatus comprising: the air conditioning equipment control device is described above.
A storage medium having a plurality of instructions stored therein; the plurality of instructions for being loaded by a processor and performing the steps of the method of:
acquiring the outdoor environment temperature;
determining whether to enter low-temperature refrigeration control or not according to the outdoor environment temperature;
under the condition that low-temperature refrigeration control is determined to be started, the running frequency of a compressor and the outdoor environment temperature are obtained;
and controlling the opening degree of the electronic expansion valve and/or the gear of the external fan according to the running frequency of the compressor and the outdoor environment temperature.
A terminal, comprising:
a processor for executing a plurality of instructions;
a memory to store a plurality of instructions;
wherein the plurality of instructions, stored by the memory, and loaded by the processor and executed to perform the steps of the method of:
acquiring the outdoor environment temperature;
determining whether to enter low-temperature refrigeration control or not according to the outdoor environment temperature;
under the condition that the low-temperature refrigeration control is determined to be started, the running frequency of the compressor is obtained;
and controlling the opening degree of the electronic expansion valve and/or the gear of the external fan according to the running frequency of the compressor and the outdoor environment temperature.
Therefore, according to the scheme of the invention, whether the outdoor environment temperature meets the condition of entering the low-temperature refrigeration control is determined, and under the condition that the low-temperature refrigeration control is determined to be met, the opening degree of the electronic expansion valve and/or the gear of the external fan is controlled according to the running frequency of the compressor and the outdoor environment temperature.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
Fig. 1 is a schematic flowchart of an embodiment of an air conditioner control method according to the present invention;
fig. 2 is a schematic flowchart of another embodiment of an air conditioner control method according to the present invention;
fig. 3 is a block diagram showing the construction of an air conditioner control device according to the present invention;
fig. 4 is another block diagram of the air conditioner control device according to the present invention;
fig. 5 is a block diagram showing still another configuration of the air conditioner control device according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In consideration of the problems that the existing air conditioning equipment is poor in refrigerating capacity and prone to faults when running in a low-temperature state, the refrigerating capacity of the air conditioning equipment can be effectively improved and the possibility of faults is reduced by controlling the opening degree of the electronic expansion valve and/or the gear of the external fan in the refrigerating state in the low-temperature environment.
According to an embodiment of the present invention, an air conditioner control method is provided, as shown in fig. 1, which is a schematic flow chart of an embodiment of the method of the present invention. The air conditioning apparatus control method may include the steps of:
step 101: acquiring the outdoor environment temperature;
step 102: determining whether to enter low-temperature refrigeration control or not according to the outdoor environment temperature;
step 103: under the condition that the low-temperature refrigeration control is determined to be started, the running frequency of the compressor is obtained;
step 104: and controlling the opening degree of the electronic expansion valve and/or the gear of the external fan according to the running frequency of the compressor and the outdoor environment temperature.
The method comprises the steps of determining whether the outdoor environment temperature meets the condition of entering low-temperature refrigeration control, controlling the opening degree of the electronic expansion valve and/or the gear of the external fan according to the running frequency of the compressor and the outdoor environment temperature under the condition that the low-temperature refrigeration control is met, solving the problems of low running refrigeration efficiency and low reliability of the existing air conditioning equipment under the low-temperature environment through the mode, and achieving the technical effect of effectively improving the refrigeration efficiency and the reliability.
Specifically, in step 102, determining whether to enter the low-temperature refrigeration control according to the outdoor ambient temperature may include: acquiring a preset low-temperature threshold value; and determining to enter low-temperature refrigeration control under the conditions that the outdoor environment temperature is less than or equal to the low-temperature threshold value and the duration time reaches the preset time. That is, the low-temperature refrigeration control is switched to only when the outdoor environment temperature is determined to be always at a low temperature within a certain time period, so that the problem of frequent switching is avoided.
For example: obtaining outdoor ambient temperature TOuter ring: when T isOuter ring<TTemperature control of low-temperature refrigeration motorAnd when the continuous time reaches delta t, the air conditioning equipment can be controlled to enter a low-temperature refrigeration external fan control mode.
When the gear of the external fan is controlled, the frequency range to which the running frequency of the compressor belongs can be determined as a target frequency range; acquiring a plurality of outer ring temperature intervals corresponding to the target frequency range; determining an outer ring temperature interval to which the outdoor environment temperature belongs; and adjusting the gear of the outer fan to a gear range corresponding to an outer ring temperature interval to which the outdoor environment temperature belongs.
For example: outdoor ambient temperature pass TOuter ringThe compressor operating frequency is represented by F:
when F is present<＝FThreshold value 1The method comprises the following steps:
Touter ring<＝TOuter ring threshold 1The range of the operating gears of the external fan is (m)10，m11)；
TOuter ring threshold 1<TOuter ring<＝TOuter ring threshold 2The range of the operating gears of the external fan is (m)12，m13)；
TOuter ring threshold 2<TOuter ring<＝TOuter ring threshold 3The range of the operating gears of the external fan is (m)14，m35)；
When F is presentThreshold value 1<F<＝FThreshold value 2The method comprises the following steps:
Touter ring<＝TOuter ring threshold 1The range of the operating gears of the external fan is (m)20，m21)；
TOuter ring threshold 1<TOuter coverRing (C)<＝TOuter ring threshold value2, the operating range of the outer fan is (m)22，m23)；
TOuter ring threshold 2<TOuter ring<＝TOuter ring threshold 3The range of the operating gears of the external fan is (m)24，m25)；
When F is presentThreshold value 2<F<＝FThreshold value 3The method comprises the following steps:
Touter ring<＝TOuter ring threshold 1The range of the operating gears of the external fan is (m)30，m31)；
TOuter ring threshold 1<TOuter ring<＝TOuter ring threshold 2The range of the operating gears of the external fan is (m)32，m33)；
TOuter ring threshold 2<TOuter ring<＝TOuter ring threshold 3The range of the operating gears of the external fan is (m)34，m35)。
Wherein the compressor frequencies F and TOuter ring intervalIt can also be subdivided into further intervals, for example: the lowest gear speed is 0r/s and the maximum gear speed can be confirmed by the motor specification, wherein the m gear can be between 15 gears of the maximum gear and 0 gears of the minimum gear.
Further, after determining a specific operating range, fine control may be performed within that range, for example, as follows: periodically acquiring the temperature of an indoor heat exchanger coil; obtaining an average value of the temperature of the coil pipe of the indoor heat exchanger acquired periodically; and adjusting the gear of the outer fan within the gear range corresponding to the outer ring temperature interval to which the outdoor environment temperature belongs according to the difference value between the average value and the outdoor environment temperature. Through the mode, fine adjustment in each gear range can be achieved.
For example, an indoor heat exchanger coil temperature (T) is obtainedInner pipe) Recording T every Δ T1Inner pipeTaking T within the time of consecutive Nx Δ T1Inner pipeAverage value TInner tube AV＝ΣTInner tube iand/N (i ═ 1, … N). Then. The running state of the external fan is controlled according to the following modes:
when T isOuter ring>A*TInner tube AV+B0The rotating speed of the outer fan is kept unchanged when the outer fan enters low-temperature refrigeration;
when A is TInner tube AV+B1<＝TOuter ring<A*TInner tube AV+B0Executing the outer fan at every delta t2 by increasing the current gear by 1 gear until reaching the maximum gear in the current gear range;
when A is TInner tube AV+B2<＝TOuter ring<A*TInner tube AV+B1The external fan is maintained to be executed at the current gear;
when T isOuter ring<A*TInner tube AV+B2(ii) a The outer fan is lowered by 1 gear every Δ t2 at the current gear until the lowest gear of the current gear range is reached.
Wherein, 0 is mentioned above<A<＝1，B0>B1>B2。
In step 104, the opening degree of the electronic expansion valve is controlled according to the operating frequency of the compressor and the outdoor ambient temperature, and the control method may include the following two control methods:
mode 1: the operation frequency of the compressor and the outdoor environment temperature are jointly controlled:
determining a frequency range to which the running frequency of the compressor belongs as a target frequency range;
acquiring a plurality of outer ring temperature intervals corresponding to the target frequency range;
determining an outer ring temperature interval to which the outdoor environment temperature belongs;
and adjusting the gear of the outer fan to the opening degree of the electronic expansion valve corresponding to the outer ring temperature interval to which the outdoor environment temperature belongs.
Mode 2: control is performed only by the outdoor ambient temperature:
determining an outer ring temperature interval to which the outdoor environment temperature belongs;
and adjusting the gear of the outer fan to the opening degree of the electronic expansion valve corresponding to the outer ring temperature interval to which the outdoor environment temperature belongs.
When the method is specifically realized, the control can be carried out only through the outdoor environment temperature, the mode of jointly controlling the running frequency of the compressor and the outdoor environment temperature can also be adopted, which control mode is specifically adopted can be determined according to actual needs, and the method is not limited in the application.
Through a large number of tests, the technical scheme of the embodiment is adopted, whether the outdoor environment temperature meets the condition of entering the low-temperature refrigeration control is determined firstly, and under the condition that the outdoor environment temperature meets the condition of entering the low-temperature refrigeration control, the opening degree of the electronic expansion valve and/or the gear of the external fan are/is controlled according to the running frequency of the compressor and the outdoor environment temperature.
The above method is described below with reference to a specific example, however, it should be noted that the specific example is only for better describing the present application and is not to be construed as limiting the present application.
In order to solve the problems of the prior air conditioner operating in a low temperature environment, the present embodiment provides a low temperature refrigeration control method of an air conditioner, as shown in fig. 2, by detecting TOuter ringAnd the running frequency F of the compressor, determining the running speed range of the outdoor fan and determining the running speed range of the outdoor fan according to TTemperature of inner pipeAnd TOuter ringAnd determining the control method of the external fan according to the comparison result. And can detect the temperature of main power devices (such as a compressor, a condenser, an evaporator and an expansion valve) of the controller: t isTemperature of moduleThe temperature of the IGBT, the temperature of the power triode and the like, and when the temperature value of any power device reaches a set threshold value, the rotating speed of the outer fan is adjusted; through TOuter ringAnd the compressor running frequency controls the opening of the electronic expansion valve.
Based on this, in this example, a control method of an air conditioning apparatus is provided, which may include the steps of:
step 1: obtaining outdoor ambient temperature TOuter ring：
At the running state of the refrigeration mode compressor, when TOuter ring<TTemperature control of low-temperature refrigeration motorAnd when the continuous time reaches delta t, the air conditioning equipment can be controlled to enter a low-temperature refrigeration external fan control mode.
When T isOuter ring>＝TTemperature control of low-temperature refrigeration motor+ΔT℃。
Wherein, the delta T can be 20 s-60 s, TTemperature control of low-temperature refrigeration motorValues of 15 ℃ or less may be obtained.
Step 2: obtaining outdoor ambient temperature TOuter ringAnd a compressor operating frequency F according to the outdoor ambient temperature TOuter ringAnd the running frequency F of the compressor determines the range of the running gear of the low-temperature refrigeration external fan.
For example:
when F is present<＝FThreshold value 1The method comprises the following steps:
Touter ring<＝TOuter ring threshold 1The range of the operating gears of the external fan is (m)10，m11)；
TOuter ring threshold 1<TOuter ring<＝TOuter ring threshold 2The range of the operating gears of the external fan is (m)12，m13)；
TOuter ring threshold 2<TOuter ring<＝TOuter ring threshold 3The range of the operating gears of the external fan is (m)14，m35)；
When F is presentThreshold value 1<F<＝FThreshold value 2The method comprises the following steps:
Touter ring<＝TOuter ring threshold 1The range of the operating gears of the external fan is (m)20，m21)；
TOuter ring threshold 1<TOuter coverRing (C)<＝TOuter ring threshold value2, the operating range of the outer fan is (m)22，m23)；
TOuter ring threshold 2<TOuter ring<＝TOuter ring threshold 3The range of the operating gears of the external fan is (m)24，m25)；
When F is presentThreshold value 2<F<＝FThreshold value 3The method comprises the following steps:
Touter ring<＝TOuter ring threshold 1The range of the operating gears of the external fan is (m)30，m31)；
TOuter ring threshold 1<TOuter ring<＝TOuter ring threshold 2Range of operating positions of external fanIs (m)32，m33)；
TOuter ring threshold 2<TOuter ring<＝TOuter ring threshold 3The range of the operating gears of the external fan is (m)34，m35)。
In particular, based on the outdoor ambient temperature TOuter ring intervalAnd the compressor frequency F may control the gear of the fan in the manner of table 1 below:
TABLE 1
Wherein the compressor frequencies F and TOuter ring intervalIt can also be subdivided into further intervals, for example: the lowest gear speed is 0r/s and the maximum gear speed can be confirmed by the motor specification, wherein the m gear can be between 15 gears of the maximum gear and 0 gears of the minimum gear.
And step 3: obtaining indoor heat exchanger coil temperature (T)Inner pipe) Recording T every Δ T1Inner pipeTaking T within the time of consecutive Nx Δ T1Inner pipeAverage value TInner tube AV＝ΣTInner tube iand/N (i ═ 1, … N). Then. The running state of the external fan is controlled according to the following modes:
when T isOuter ring>A*TInner tube AV+B0The rotating speed of the outer fan is kept unchanged when the outer fan enters low-temperature refrigeration;
when A is TInner tube AV+B1<＝TOuter ring<A*TInner tube AV+B0Executing the outer fan at every delta t2 by increasing the current gear by 1 gear until reaching the maximum gear in the current gear range;
when A is TInner tube AV+B2<＝TOuter ring<A*TInner tube AV+B1The external fan is maintained to be executed at the current gear;
when T isOuter ring<A*TInner tube AV+B2(ii) a The outer fan is lowered by 1 gear every Δ t2 at the current gear until the lowest gear of the current gear range is reached.
For example: is provided withMaximum speed of rotation RmaxMinimum rotational speed Rmin. The gear of the fan is divided into T gears, and the gear of the K gear is K/T (R)max-Rmin)+Rmin. For example, M is 15 th gear and maximum Rmax＝800r/s,Rmin200r/s, the 10-gear rotation speed is 10/15 × 200 (800-.
Wherein, 0 is mentioned above<A<＝1，B0>B1>B2Wherein B is0、B1、B2The value is between (10, 20).
Further, can pass through TOuter tubeThe temperature rise of the main power device of the controller is used for correcting and controlling the gear of the external fan, the priority of the control can be higher than that of the fan control method under the low-temperature refrigeration condition, and the control can be specifically carried out according to the following control strategy:
when T isOuter tube≥TFull-speed running pipe temperature of low-temperature refrigeration fan(above 45 ℃), the external fan is forced to operate in the maximum gear and at least for at 3 time (greater than 30 s):
if the temperature of any power device is greater than or equal to the frequency limiting temperature-delta T1 of the power device, the gear of the outer fan is prohibited from being adjusted downwards;
if the temperature of any power device is more than or equal to the frequency limiting temperature-delta T2 of the power device, the gear of the external fan is increased by 1 gear every delta T2 time until the maximum gear is operated;
if the temperature of any power device is greater than or equal to the frequency limiting temperature-delta T3 of the power device, the outer fan is forced to operate in the maximum gear, and the outer fan is operated for at least delta T3 time (greater than 30 s).
Wherein Δ T1> Δ T2> Δ T3, for example: Δ T1 ═ 15, Δ T2 ═ 10, Δ T3 ═ 5)
And 4, step 4: the control to the electronic expansion valve under the condition of low-temperature refrigeration, the specific condition of entering the mode is similar to the control to the external fan under the condition of entering the low-temperature refrigeration, and the control can be carried out according to the following control mode:
the control method is as follows: through TOuter ringThe section to which the electronic expansion valve belongs determines the opening degree P of the electronic expansion valve:
Touter ring<＝TOuter ring threshold 1The electronic expansion valve opening is set to P1;
Touter ring threshold 1<TOuter ring<＝TOuter ring threshold 2The electronic expansion valve opening is set to P2;
Touter ring threshold 2<TOuter ring<＝TOuter ring threshold 3The electronic expansion valve opening is set to P3;
specifically, it can be shown in table 2 below:
TABLE 2
| TOuter ring | ＜-16 | [-16,-10) | [-10,-5) | [-5,5) | ≥5 |
| Valve opening degree P | P1＝100 | P2＝120 | P3＝150 | P4＝180 | P5230 |
And a second control mode: through TOuter ringThe section to which the compressor belongs and the section to which the compressor operation frequency belongs determine the opening degree P of the electronic expansion valve.
When F is present<＝FThreshold value 1(e.g. in: 30 HZ):
Touter ring<＝TOuter ring threshold 1(e.g., -15 ℃), the electronic expansion valve opening being set to P11;
Touter ring threshold 1<TOuter ring<＝TOuter ring threshold 2(e.g., 0 ℃), the electronic expansion valve opening degree being set to P12;
Touter ring threshold 2<TOuter ring<＝TOuter ring threshold 3(e.g., 15 ℃), the electronic expansion valve opening being set at P13;
wherein, P13< P12< P11 can be in the range of 70P-350P.
When F is presentThreshold value 1<F<＝FThreshold value 2When (e.g., 50 HZ):
Touter ring<＝TOuter ring threshold 1The electronic expansion valve opening is set to P21;
Touter ring threshold 1<TOuter ring<＝TOuter ring threshold 2The electronic expansion valve opening is set to P22;
Touter ring threshold 2<TOuter ring<＝TOuter ring threshold 3The electronic expansion valve opening is set to P23;
wherein, P23< P22< P21 can be in the range of 70P-350P.
When F is presentThreshold value 2<F<＝FThreshold value 3When (e.g., 70 HZ):
Touter ring<＝TOuter ring threshold 1The electronic expansion valve opening is set to P31;
Touter ring threshold 1<TOuter ring<＝TOuter ring threshold 2The electronic expansion valve opening is set to P32;
Touter ring threshold 2<TOuter ring<＝TOuter ring threshold 3The electronic expansion valve opening is set to P33;
wherein, P33< P32< P31 can be in the range of 70P-350P.
The frequencies F and T of the compressorOuter ringThe interval can be further divided into thinner intervals, the specific interval division can be selected according to actual needs, and the application is toThis is not limiting.
According to an embodiment of the present invention, there is also provided a control device of a voltage detection device corresponding to the air conditioning equipment control method. Referring to fig. 3, a schematic diagram of an embodiment of the apparatus of the present invention is shown. The air conditioner control device may include:
a first obtaining module 301, configured to obtain an outdoor environment temperature;
a determining module 302, configured to determine whether to enter low-temperature refrigeration control according to the outdoor ambient temperature;
a second obtaining module 303, configured to obtain an operating frequency of the compressor and an outdoor ambient temperature when it is determined that the low-temperature refrigeration control is performed;
and the control module 304 is configured to control an opening degree of the electronic expansion valve and/or a gear of the external fan according to the operating frequency of the compressor and the outdoor environment temperature.
In one embodiment, the determining module 302 may be as shown in fig. 4, and includes: a first obtaining unit 401, configured to obtain a preset low temperature threshold; a first determining unit 402, configured to determine to enter low-temperature refrigeration control when the outdoor environment temperature is less than or equal to the low-temperature threshold and a duration of the low-temperature refrigeration control reaches a preset duration.
In one embodiment, the control module 304 may be as shown in fig. 5, and includes: a second determining unit 501 for determining a frequency range to which the compressor operating frequency belongs as a target frequency range; a second obtaining unit 502, configured to obtain a plurality of outer ring temperature intervals corresponding to the target frequency range; a third determining unit 503, configured to determine an outer ring temperature interval to which the outdoor environment temperature belongs; a first adjusting unit 504, configured to adjust the gear of the external fan to a gear range corresponding to an outer ring temperature range to which the outdoor environment temperature belongs.
In one embodiment, the first adjusting unit 504 may include: the acquisition subunit is used for periodically acquiring the temperature of the coil pipe of the indoor heat exchanger; the calculating subunit is used for calculating the average value of the periodically acquired indoor heat exchanger coil temperature; and the adjusting subunit is used for adjusting the gear of the outer fan within the gear range corresponding to the outer ring temperature interval to which the outdoor environment temperature belongs according to the difference value between the average value and the outdoor environment temperature.
In one embodiment, the control module 304 may include: a fourth determining unit for determining a frequency range to which the compressor operating frequency belongs as a target frequency range; a third obtaining unit, configured to obtain a plurality of outer ring temperature intervals corresponding to the target frequency range; a fifth determining unit, configured to determine an outer ring temperature interval to which the outdoor environment temperature belongs; and the second adjusting unit is used for adjusting the gear of the outer fan to the opening degree of the electronic expansion valve corresponding to the outer ring temperature interval to which the outdoor environment temperature belongs.
Since the processes and functions implemented by the apparatus of this embodiment substantially correspond to the embodiments, principles and examples of the method shown in fig. 1 to 2, the description of this embodiment is not detailed, and reference may be made to the related descriptions in the foregoing embodiments, which are not repeated herein.
Through a large number of tests, the technical scheme of the invention is adopted to firstly determine whether the outdoor environment temperature meets the condition of entering the low-temperature refrigeration control, and under the condition of determining that the low-temperature refrigeration control is met, the opening degree of the electronic expansion valve and/or the gear of the external fan is controlled according to the running frequency of the compressor and the outdoor environment temperature.
According to the embodiment of the invention, a terminal corresponding to the air conditioning equipment control device is also provided. The terminal may include: the air conditioning equipment control device described above.
Since the processes and functions implemented by the terminal of this embodiment substantially correspond to the embodiments, principles and examples of the devices shown in fig. 3 to fig. 5, the description of this embodiment is not detailed, and reference may be made to the related descriptions in the foregoing embodiments, which are not described herein again.
Through a large number of tests, the technical scheme of the invention is adopted to firstly determine whether the outdoor environment temperature meets the condition of entering the low-temperature refrigeration control, and under the condition of determining that the low-temperature refrigeration control is met, the opening degree of the electronic expansion valve and/or the gear of the external fan is controlled according to the running frequency of the compressor and the outdoor environment temperature.
According to an embodiment of the present invention, there is also provided a storage medium corresponding to an air conditioner control method. The storage medium may include: the storage medium has stored therein a plurality of instructions; the plurality of instructions are used for loading and executing the air conditioning equipment control method by the processor.
Since the processing and functions implemented by the storage medium of this embodiment substantially correspond to the embodiments, principles, and examples of the methods shown in fig. 1 to fig. 2, details are not described in the description of this embodiment, and reference may be made to the related descriptions in the foregoing embodiments, which are not described herein again.
Through a large number of tests, the technical scheme of the invention is adopted to firstly determine whether the outdoor environment temperature meets the condition of entering the low-temperature refrigeration control, and under the condition of determining that the low-temperature refrigeration control is met, the opening degree of the electronic expansion valve and/or the gear of the external fan is controlled according to the running frequency of the compressor and the outdoor environment temperature.
According to the embodiment of the invention, a terminal corresponding to the air conditioner control method is also provided. The terminal can include: a processor for executing a plurality of instructions; a memory to store a plurality of instructions; the plurality of instructions are stored by the memory, and are loaded by the processor and execute the air conditioning equipment control method.
Since the processing and functions implemented by the terminal of this embodiment substantially correspond to the embodiments, principles, and examples of the methods shown in fig. 1 to fig. 2, details are not described in the description of this embodiment, and reference may be made to the related descriptions in the foregoing embodiments, which are not described herein again.
Through a large number of tests, the technical scheme of the invention is adopted to firstly determine whether the outdoor environment temperature meets the condition of entering the low-temperature refrigeration control, and under the condition of determining that the low-temperature refrigeration control is met, the opening degree of the electronic expansion valve and/or the gear of the external fan is controlled according to the running frequency of the compressor and the outdoor environment temperature.
In summary, it is readily understood by those skilled in the art that the advantageous modes described above can be freely combined and superimposed without conflict.
The above description is only an example of the present invention, and is not intended to limit the present invention, and it is obvious to those skilled in the art that various modifications and variations can be made in the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (12)
1. An air conditioning apparatus control method characterized by comprising:
acquiring the outdoor environment temperature;
determining whether to enter low-temperature refrigeration control or not according to the outdoor environment temperature;
under the condition that the low-temperature refrigeration control is determined to be started, the running frequency of the compressor is obtained;
controlling the opening degree of the electronic expansion valve and/or the gear of the external fan according to the running frequency of the compressor and the outdoor environment temperature;
according to compressor operating frequency with outdoor ambient temperature, control external fan gear, include:
determining a frequency range to which the running frequency of the compressor belongs as a target frequency range;
acquiring a plurality of outer ring temperature intervals corresponding to the target frequency range;
determining an outer ring temperature interval to which the outdoor environment temperature belongs;
and adjusting the gear of the outer fan to a gear range corresponding to an outer ring temperature interval to which the outdoor environment temperature belongs.
2. The method of claim 1, wherein determining whether to enter cryogenic refrigeration control based on the outdoor ambient temperature comprises:
acquiring a preset low-temperature threshold value;
and determining to enter low-temperature refrigeration control under the conditions that the outdoor environment temperature is less than or equal to the low-temperature threshold value and the duration time reaches the preset time.
3. The method of claim 1, wherein adjusting the outer fan gear to a gear range corresponding to an outer loop temperature interval to which the outdoor environment temperature belongs comprises:
periodically acquiring the temperature of an indoor heat exchanger coil;
obtaining an average value of the temperature of the coil pipe of the indoor heat exchanger acquired periodically;
and adjusting the gear of the outer fan within the gear range corresponding to the outer ring temperature interval to which the outdoor environment temperature belongs according to the difference value between the average value and the outdoor environment temperature.
4. The method of claim 1, wherein controlling an opening degree of an electronic expansion valve based on the compressor operating frequency and the outdoor ambient temperature comprises:
determining a frequency range to which the running frequency of the compressor belongs as a target frequency range;
acquiring a plurality of outer ring temperature intervals corresponding to the target frequency range;
determining an outer ring temperature interval to which the outdoor environment temperature belongs;
and adjusting the gear of the outer fan to the opening degree of the electronic expansion valve corresponding to the outer ring temperature interval to which the outdoor environment temperature belongs.
5. The method of claim 1, wherein controlling an opening degree of an electronic expansion valve based on the compressor operating frequency and the outdoor ambient temperature comprises:
determining an outer ring temperature interval to which the outdoor environment temperature belongs;
and adjusting the gear of the outer fan to the opening degree of the electronic expansion valve corresponding to the outer ring temperature interval to which the outdoor environment temperature belongs.
6. An air conditioning apparatus control device characterized by comprising:
the first acquisition module is used for acquiring the outdoor environment temperature;
the determining module is used for determining whether to enter low-temperature refrigeration control according to the outdoor environment temperature;
the second acquisition module is used for acquiring the running frequency of the compressor under the condition of determining to enter the low-temperature refrigeration control;
the control module is used for controlling the opening of the electronic expansion valve and/or the gear of the external fan according to the running frequency of the compressor and the outdoor environment temperature;
the control module includes:
a second determining unit for determining a frequency range to which the compressor operating frequency belongs as a target frequency range;
the second acquisition unit is used for acquiring a plurality of outer ring temperature intervals corresponding to the target frequency range;
a third determining unit, configured to determine an outer ring temperature interval to which the outdoor environment temperature belongs;
and the first adjusting unit is used for adjusting the gear of the outer fan to a gear range corresponding to an outer ring temperature interval to which the outdoor environment temperature belongs.
7. The apparatus of claim 6, wherein the determining module comprises:
the first acquisition unit is used for acquiring a preset low-temperature threshold;
and the first determining unit is used for determining to enter low-temperature refrigeration control under the condition that the outdoor environment temperature is less than or equal to the low-temperature threshold value and the duration time reaches the preset time length.
8. The apparatus of claim 7, wherein the first adjusting unit comprises:
the acquisition subunit is used for periodically acquiring the temperature of the coil pipe of the indoor heat exchanger;
the calculating subunit is used for calculating the average value of the periodically acquired indoor heat exchanger coil temperature;
and the adjusting subunit is used for adjusting the gear of the outer fan within the gear range corresponding to the outer ring temperature interval to which the outdoor environment temperature belongs according to the difference value between the average value and the outdoor environment temperature.
9. The apparatus of claim 6, wherein the control module comprises:
a fourth determining unit for determining a frequency range to which the compressor operating frequency belongs as a target frequency range;
a third obtaining unit, configured to obtain a plurality of outer ring temperature intervals corresponding to the target frequency range;
a fifth determining unit, configured to determine an outer ring temperature interval to which the outdoor environment temperature belongs;
and the second adjusting unit is used for adjusting the gear of the outer fan to the opening degree of the electronic expansion valve corresponding to the outer ring temperature interval to which the outdoor environment temperature belongs.
10. An air conditioning apparatus, characterized by comprising: the air conditioning equipment control device according to any one of claims 6 to 9.
11. A storage medium having a plurality of instructions stored therein; the plurality of instructions for loading and executing the air conditioner control method according to any one of claims 1 to 5 by a processor.
12. A terminal, comprising:
a processor for executing a plurality of instructions;
a memory to store a plurality of instructions;
wherein the plurality of instructions are for being stored by the memory and loaded and executed by the processor to perform the air conditioning equipment control method of any of claims 1 to 5.
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| CN110486901B (en) * | 2019-08-02 | 2021-07-23 | 青岛海尔空调器有限总公司 | Method and device for low-temperature refrigeration |
| CN110762782B (en) * | 2019-12-30 | 2020-04-24 | 宁波奥克斯电气股份有限公司 | Low-temperature dehumidification control method and device and air conditioner |
| CN111141009A (en) * | 2019-12-31 | 2020-05-12 | Tcl空调器(中山)有限公司 | Refrigeration control method and device and storage medium |
| CN111207501B (en) * | 2020-01-16 | 2022-07-29 | 广东美的暖通设备有限公司 | Air conditioner control method and system and air conditioner |
| CN111878960B (en) * | 2020-05-27 | 2021-09-10 | 宁波奥克斯电气股份有限公司 | Control method and device for low-temperature refrigeration operation of air conditioner and air conditioner |
| CN111895627B (en) * | 2020-07-14 | 2022-01-04 | Tcl空调器(中山)有限公司 | Air conditioner outdoor fan rotating speed control method, air conditioner and storage medium |
| CN111964238B (en) * | 2020-08-24 | 2022-03-25 | 广东美的暖通设备有限公司 | Control method and device of air conditioner, air conditioner and readable storage medium |
| CN112710067A (en) * | 2020-12-29 | 2021-04-27 | 宁波奥克斯电气股份有限公司 | Air conditioner control method and device, air conditioner and readable storage medium |
| CN113028590B (en) * | 2021-04-20 | 2022-05-06 | 宁波奥克斯电气股份有限公司 | Air conditioner low-temperature refrigeration control method and device and air conditioner |
| CN113983643B (en) * | 2021-11-05 | 2023-08-01 | 海信（广东）空调有限公司 | Control method of air conditioner |
| CN114777312B (en) * | 2022-05-17 | 2023-08-18 | 宁波奥克斯电气股份有限公司 | Low-temperature refrigeration continuous operation control method and device, air conditioner and storage medium |
| CN115523642B (en) * | 2022-09-19 | 2023-10-27 | 珠海格力电器股份有限公司 | Control method, device and system of air conditioner |
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| JP2008202908A (en) * | 2007-02-22 | 2008-09-04 | Mitsubishi Heavy Ind Ltd | Air conditioner |
| CN105627496A (en) * | 2014-10-29 | 2016-06-01 | 青岛海尔空调器有限总公司 | Low-temperature refrigerating control method of air conditioner and air conditioner |
| CN104613601B (en) * | 2015-01-29 | 2017-08-15 | 广东美的制冷设备有限公司 | The control method and device of outdoor fan in detachable air conditioner |
| CN106288160B (en) * | 2016-08-08 | 2019-04-09 | 美的集团武汉制冷设备有限公司 | A kind of cryogenic refrigeration control method, low-temperature refrigeration control device and air conditioner |
| CN106705362A (en) * | 2016-12-26 | 2017-05-24 | 广东美的制冷设备有限公司 | Low-temperature refrigerating control method, controller and air conditioner |
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