CN110906515A - Refrigeration and dehumidification switching method and system of air conditioner - Google Patents
Refrigeration and dehumidification switching method and system of air conditioner Download PDFInfo
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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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
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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
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Abstract
The invention relates to the technical field of air conditioners, aims to solve the problem of poor refrigeration or dehumidification effect caused by mismatching of refrigerant flow when the conventional air conditioner performs mode switching between refrigeration and dehumidification, and provides a refrigeration and dehumidification switching method of an air conditioner, which comprises the following steps: after the air conditioner is switched between the refrigeration mode and the dehumidification mode, calculating the adaptive opening of the electronic expansion valve according to the opening of the electronic expansion valve before the mode switching, the compressor frequency, the indoor fan rotating speed and the outdoor fan rotating speed before and after the mode switching; and adjusting the electronic expansion valve according to the adaptive opening degree, wherein the electronic expansion valve is used for controlling the flow of the refrigerant. The electronic expansion valve is adjusted to be adaptive to the opening degree according to the opening degree of the electronic expansion valve before mode switching, the frequency change of the compressor and the rotating speed change of the indoor and outdoor fans, so that the flow of the refrigerant is controlled, the current operation mode of the air conditioner is matched with the flow of the refrigerant, and the refrigeration and dehumidification effects of the air conditioner are improved. The air conditioner is suitable for variable frequency air conditioners.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a refrigeration and dehumidification switching method and system.
Background
The inverter air conditioner can often appear the condition of switching mode switching in the use, for example, refrigerate, heat, switch between the dehumidification, because heat and refrigeration/dehumidification refrigerant flow direction is opposite, need switch over the four-way valve, can shut down the balanced pressure when consequently heating and refrigeration/switching between the dehumidification and carry out the mode switch again, this process electronic expansion valve can automatic matching correspond the suitable refrigerant flow aperture of mode before the mode switch, but when switching between refrigeration and dehumidification, because the refrigerant flow direction does not change, consequently can directly carry out the mode switch without shutting down.
However, in the prior art, when the air conditioner is switched between the cooling mode and the dehumidification mode, the opening degree of an electronic expansion valve for controlling the flow of a refrigerant cannot be adjusted, and the air conditioner can be quickly switched to the mode state to be changed, but because the difference between the frequency of the cooling mode and the frequency of the dehumidification mode is large, the frequency of a compressor is generally high during the cooling operation, and because the cold load is small, the frequency of the compressor is low, the air speed of an indoor unit during the cooling operation is generally high, and the air speed of the indoor unit during the dehumidification operation is generally low for reducing the evaporation temperature and improving the dehumidification capacity, the following problems can be caused after the two modes are switched with: the refrigerant flow is not matched, the refrigerant flow is required to be larger in the refrigeration mode, so the opening degree of the electronic expansion valve is also larger, the refrigerant flow is required to be smaller in the dehumidification mode, the opening degree of the electronic expansion valve is not matched in a targeted manner after switching, and the refrigeration or dehumidification cannot be immediately adapted to the reasonable refrigerant flow; when dehumidification is switched to refrigeration, the opening response of the electronic expansion valve is not timely, the flow of the refrigerant is too small, the refrigerant is insufficient, the exhaust temperature is too high during refrigeration, even the exhaust protection is stopped, and the refrigeration effect is influenced.
Disclosure of Invention
The invention aims to solve the problem of poor refrigeration or dehumidification effect caused by mismatching of refrigerant flow when the mode of the existing air conditioner is switched between refrigeration and dehumidification, and provides a refrigeration and dehumidification switching method and system of an air conditioner.
The technical scheme adopted by the invention for solving the technical problems is as follows: the refrigeration and dehumidification switching method of the air conditioner comprises the following steps:
step 1, after the air conditioner is switched between a refrigeration mode and a dehumidification mode, calculating the adaptive opening of the electronic expansion valve according to the opening of the electronic expansion valve before mode switching, the compressor frequency, the indoor fan rotating speed and the outdoor fan rotating speed before and after mode switching;
and 2, adjusting an electronic expansion valve according to the adaptive opening degree, wherein the electronic expansion valve is used for controlling the flow of the refrigerant.
Further, in order to calculate the adaptive opening degree of the electronic expansion valve when the air conditioner is switched from the cooling mode to the dehumidification mode, the step 1 includes:
acquiring a current operation mode of the air conditioner, and acquiring the opening degree of an electronic expansion valve, the frequency of a compressor, the rotating speed of an indoor fan and the rotating speed of an outdoor fan corresponding to the current refrigeration mode of the air conditioner if the current operation mode of the air conditioner is the refrigeration mode;
detecting whether the air conditioner switches the operation mode, if so, detecting the operation mode after the air conditioner is switched, and if the switched operation mode is the dehumidification mode, acquiring the corresponding compressor frequency, the indoor fan rotating speed and the outdoor fan rotating speed after the air conditioner is switched to the dehumidification mode;
and calculating the adaptive opening of the electronic expansion valve according to the opening of the electronic expansion valve, the frequency of the compressor, the rotating speed of the indoor fan and the rotating speed of the outdoor fan.
Further, in order to calculate the adaptive opening of the electronic expansion valve when the air conditioner is switched from the dehumidification mode to the refrigeration mode, the step 1 further includes:
acquiring a current operation mode of the air conditioner, and acquiring the opening degree of an electronic expansion valve, the frequency of a compressor, the rotating speed of an indoor fan and the rotating speed of an outdoor fan corresponding to the current dehumidification mode of the air conditioner if the current operation mode of the air conditioner is the dehumidification mode;
detecting whether the air conditioner switches the operation mode, if so, detecting the operation mode after the air conditioner is switched, and if the switched operation mode is the refrigeration mode, acquiring the corresponding compressor frequency, the indoor fan rotating speed and the outdoor fan rotating speed after the air conditioner is switched to the refrigeration mode;
and calculating the adaptive opening of the electronic expansion valve according to the opening of the electronic expansion valve, the frequency of the compressor, the rotating speed of the indoor fan and the rotating speed of the outdoor fan.
Further, to realize the calculation of the adaptive opening of the electronic expansion valve, the formula for calculating the adaptive opening of the electronic expansion valve according to the compressor frequency before and after the mode switching, the indoor fan rotating speed and the outdoor fan rotating speed is as follows:
P2＝F1/F2*P1+Di1/Di2*K1+Do1/Do2*K2；
in the formula, P2 is the adaptive opening degree of the electronic expansion valve, F1 is the compressor frequency after mode switching, F2 is the compressor frequency before mode switching, P1 is the opening degree of the electronic expansion valve before mode switching, Di1 is the indoor fan speed after mode switching, Di2 is the indoor fan speed before mode switching, Do1 is the outdoor fan speed after mode switching, Do2 is the outdoor fan speed before mode switching, and K1 and K2 are constants.
Further, in order to improve the accuracy of calculating the adaptive opening degree of the electronic expansion valve, the value of K1 is 40 to 80, and the value of K2 is 5 to 15.
The invention also provides a refrigeration and dehumidification switching system of the air conditioner, which comprises:
the calculation unit is used for calculating the adaptive opening of the electronic expansion valve according to the opening of the electronic expansion valve before mode switching, the compressor frequency, the indoor fan rotating speed and the outdoor fan rotating speed before and after mode switching after the air conditioner is switched between the refrigeration mode and the dehumidification mode;
and the adjusting unit is used for adjusting the electronic expansion valve according to the adaptive opening degree, and the electronic expansion valve is used for controlling the flow of the refrigerant.
Further, the method also comprises the following steps:
the system comprises an acquisition unit, a control unit and a control unit, wherein the acquisition unit is used for acquiring the current operation mode of the air conditioner, and acquiring the opening degree of an electronic expansion valve, the frequency of a compressor, the rotating speed of an indoor fan and the rotating speed of an outdoor fan corresponding to the current refrigeration mode of the air conditioner if the current operation mode of the air conditioner is a refrigeration mode;
and the detection unit is used for detecting whether the air conditioner switches the operation mode, detecting the operation mode after the air conditioner is switched if the operation mode is switched, and acquiring the corresponding compressor frequency, the indoor fan rotating speed and the outdoor fan rotating speed after the air conditioner is switched to the dehumidification mode if the operation mode after the air conditioner is switched to the dehumidification mode.
Further, the obtaining unit is also used for obtaining the current operation mode of the air conditioner, and if the current operation mode of the air conditioner is a dehumidification mode, obtaining the opening degree of an electronic expansion valve, the compressor frequency, the indoor fan rotating speed and the outdoor fan rotating speed which correspond to the current dehumidification mode of the air conditioner;
the detection unit is also used for detecting whether the air conditioner switches the operation mode, if so, detecting the operation mode after the air conditioner is switched, and if the switched operation mode is the refrigeration mode, acquiring the corresponding compressor frequency, the indoor fan rotating speed and the outdoor fan rotating speed after the air conditioner is switched to the refrigeration mode.
Further, the formula for calculating the adaptive opening of the electronic expansion valve according to the compressor frequency, the indoor fan rotating speed and the outdoor fan rotating speed before and after the mode switching is as follows:
P2＝F1/F2*P1+Di1/Di2*K1+Do1/Do2*K2；
in the formula, P2 is the adaptive opening degree of the electronic expansion valve, F1 is the compressor frequency after mode switching, F2 is the compressor frequency before mode switching, P1 is the opening degree of the electronic expansion valve before mode switching, Di1 is the indoor fan speed after mode switching, Di2 is the indoor fan speed before mode switching, Do1 is the outdoor fan speed after mode switching, Do2 is the outdoor fan speed before mode switching, and K1 and K2 are constants.
Further, the value of K1 is 40 to 80, and the value of K2 is 5 to 15.
The invention has the beneficial effects that: according to the refrigeration and dehumidification switching method and system of the air conditioner, after the air conditioner is switched between the refrigeration mode and the dehumidification mode, the electronic expansion valve is adjusted to be adaptive to the adaptive opening degree according to the opening degree of the electronic expansion valve before mode switching, the frequency change of the compressor and the rotating speed change of the indoor and outdoor fans, so that the flow of the refrigerant is controlled, the current operation mode of the air conditioner is matched with the flow of the refrigerant, abnormal noise caused by mismatching of the flow of the refrigerant is avoided, the refrigeration and dehumidification effects of the air conditioner are improved, and the high efficiency and reliability of the operation of the air conditioner system are improved.
Drawings
Fig. 1 is a schematic flow chart of a refrigeration and dehumidification switching method of an air conditioner according to an embodiment of the present invention;
fig. 2 is another schematic flow chart of a refrigeration and dehumidification switching method of an air conditioner according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a refrigeration and dehumidification switching system of an air conditioner according to an embodiment of the present invention.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
The invention relates to a refrigeration and dehumidification switching method of an air conditioner, which comprises the following steps: step 1, after the air conditioner is switched between a refrigeration mode and a dehumidification mode, calculating the adaptive opening of the electronic expansion valve according to the opening of the electronic expansion valve before mode switching, the compressor frequency, the indoor fan rotating speed and the outdoor fan rotating speed before and after mode switching; and 2, adjusting an electronic expansion valve according to the adaptive opening degree, wherein the electronic expansion valve is used for controlling the flow of the refrigerant.
When the air conditioner switches between refrigeration mode and dehumidification mode, it is mainly that compressor frequency and indoor outer fan rotational speed change, when refrigeration mode operation, the compressor frequency is higher, indoor outer fan rotational speed is also higher, this is for providing bigger cold volume, and the main purpose of dehumidification is used for reducing indoor moisture content, do not need higher compressor frequency and indoor outer fan rotational speed, and in order to improve dehumidification effect, still need to reduce indoor fan rotational speed very much, in order to reach the purpose that reduces evaporating temperature and improve dehumidification effect. Wherein, the corresponding relation of the opening degree and the parameter adaptation of the electronic expansion valve is respectively as follows: the higher the frequency of the compressor is, the larger the opening degree of the electronic expansion valve is, the higher the rotating speed of the indoor fan is, the larger the opening degree of the electronic expansion valve is, the higher the rotating speed of the outdoor fan is, and the smaller the opening degree of the electronic expansion valve is. The invention determines the adaptive opening degree of the electronic expansion valve through the compressor frequency and the rotating speed of the indoor and outdoor fans before and after mode switching, and adjusts the electronic expansion valve according to the adaptive opening degree, so that the refrigerant flow of the air conditioner is matched with the current running mode of the air conditioner.
Examples
The refrigeration and dehumidification switching method of the air conditioner in the embodiment of the invention, as shown in fig. 1, comprises the following steps:
s1, after the air conditioner is switched between a refrigeration mode and a dehumidification mode, calculating the adaptive opening of the electronic expansion valve according to the opening of the electronic expansion valve before mode switching, the compressor frequency before mode switching, the indoor fan rotating speed and the outdoor fan rotating speed;
wherein the switching of the air conditioner between the cooling mode and the dehumidifying mode includes switching the air conditioner from the cooling mode to the dehumidifying mode, and switching the air conditioner from the dehumidifying mode to the cooling mode.
As shown in fig. 2, a method for calculating the adaptive opening degree of the electronic expansion valve after the air conditioner is switched from the cooling mode to the dehumidification mode will be described below.
Acquiring a current operation mode of the air conditioner, and acquiring the opening degree of an electronic expansion valve, the frequency of a compressor, the rotating speed of an indoor fan and the rotating speed of an outdoor fan corresponding to the current refrigeration mode of the air conditioner if the current operation mode of the air conditioner is the refrigeration mode;
detecting whether the air conditioner switches the operation mode, if so, detecting the operation mode after the air conditioner is switched, and if the switched operation mode is the dehumidification mode, acquiring the corresponding compressor frequency, the indoor fan rotating speed and the outdoor fan rotating speed after the air conditioner is switched to the dehumidification mode;
and calculating the adaptive opening of the electronic expansion valve according to the opening of the electronic expansion valve, the frequency of the compressor, the rotating speed of the indoor fan and the rotating speed of the outdoor fan. The specific calculation formula is as follows:
P2＝F1/F2*P1+Di1/Di2*K1+Do1/Do2*K2；
in the formula, P2 is the adaptive opening degree of the electronic expansion valve, F1 is the corresponding compressor frequency after the air conditioner is switched to the dehumidification mode, F2 is the corresponding compressor frequency of the refrigeration mode, P1 is the opening degree of the electronic expansion valve corresponding to the refrigeration mode, Di1 is the corresponding indoor fan rotating speed after the air conditioner is switched to the dehumidification mode, Di2 is the indoor fan rotating speed corresponding to the refrigeration mode, Do1 is the corresponding outdoor fan rotating speed after the air conditioner is switched to the dehumidification mode, Do2 is the outdoor fan rotating speed corresponding to the refrigeration mode, and K1 and K2 are constants.
As shown in fig. 2, a method for calculating the adaptive opening degree of the electronic expansion valve after the air conditioner is switched from the dehumidification mode to the cooling mode will be described below.
Acquiring a current operation mode of the air conditioner, and acquiring the opening degree of an electronic expansion valve, the frequency of a compressor, the rotating speed of an indoor fan and the rotating speed of an outdoor fan corresponding to the current dehumidification mode of the air conditioner if the current operation mode of the air conditioner is the dehumidification mode;
detecting whether the air conditioner switches the operation mode, if so, detecting the operation mode after the air conditioner is switched, and if the switched operation mode is the refrigeration mode, acquiring the corresponding compressor frequency, the indoor fan rotating speed and the outdoor fan rotating speed after the air conditioner is switched to the refrigeration mode;
and calculating the adaptive opening of the electronic expansion valve according to the opening of the electronic expansion valve, the frequency of the compressor, the rotating speed of the indoor fan and the rotating speed of the outdoor fan. The specific calculation formula is as follows:
P2＝F1/F2*P1+Di1/Di2*K1+Do1/Do2*K2；
in the formula, P2 is the adaptive opening degree of the electronic expansion valve, F1 is the compressor frequency corresponding to the air conditioner after the air conditioner is switched to the cooling mode, F2 is the compressor frequency corresponding to the dehumidification mode, P1 is the opening degree of the electronic expansion valve corresponding to the dehumidification mode, Di1 is the indoor fan rotating speed corresponding to the air conditioner after the air conditioner is switched to the cooling mode, Di2 is the indoor fan rotating speed corresponding to the dehumidification mode, Do1 is the outdoor fan rotating speed corresponding to the air conditioner after the air conditioner is switched to the cooling mode, Do2 is the outdoor fan rotating speed corresponding to the dehumidification mode, and K1 and K2 are constants.
Wherein the constants K1 and K2 are adjustable according to the influence weight of each parameter, preferably K1 has a value of 40 to 80, such as 60, and K2 has a value of 5 to 15, such as 10.
And S2, adjusting an electronic expansion valve according to the adaptive opening, wherein the electronic expansion valve is used for controlling the flow of the refrigerant.
Specifically, after the adaptive opening degree of the electronic expansion valve is obtained through recalculation, the electronic expansion valve is adjusted to the adaptive opening degree, so that the control of the refrigerant flow is realized, and the operation mode of the air conditioner is matched with the refrigerant flow.
Based on the above technical solution, an embodiment of the present invention further provides a refrigeration and dehumidification switching system of an air conditioner, as shown in fig. 3, including:
the calculation unit is used for calculating the adaptive opening of the electronic expansion valve according to the opening of the electronic expansion valve before mode switching, the compressor frequency, the indoor fan rotating speed and the outdoor fan rotating speed before and after mode switching after the air conditioner is switched between the refrigeration mode and the dehumidification mode;
and the adjusting unit is used for adjusting the electronic expansion valve according to the adaptive opening degree, and the electronic expansion valve is used for controlling the flow of the refrigerant.
Optionally, the method further includes: the system comprises an acquisition unit, a control unit and a control unit, wherein the acquisition unit is used for acquiring the current operation mode of the air conditioner, and acquiring the opening degree of an electronic expansion valve, the frequency of a compressor, the rotating speed of an indoor fan and the rotating speed of an outdoor fan corresponding to the current refrigeration mode of the air conditioner if the current operation mode of the air conditioner is a refrigeration mode;
and the detection unit is used for detecting whether the air conditioner switches the operation mode, detecting the operation mode after the air conditioner is switched if the operation mode is switched, and acquiring the corresponding compressor frequency, the indoor fan rotating speed and the outdoor fan rotating speed after the air conditioner is switched to the dehumidification mode if the operation mode after the air conditioner is switched to the dehumidification mode.
Optionally, the obtaining unit is further configured to obtain a current operation mode of the air conditioner, and if the current operation mode of the air conditioner is a dehumidification mode, obtain an opening degree of an electronic expansion valve, a compressor frequency, an indoor fan rotation speed, and an outdoor fan rotation speed corresponding to the current dehumidification mode of the air conditioner;
the detection unit is also used for detecting whether the air conditioner switches the operation mode, if so, detecting the operation mode after the air conditioner is switched, and if the switched operation mode is the refrigeration mode, acquiring the corresponding compressor frequency, the indoor fan rotating speed and the outdoor fan rotating speed after the air conditioner is switched to the refrigeration mode.
Optionally, the formula for calculating the adaptive opening of the electronic expansion valve according to the compressor frequency, the indoor fan rotation speed and the outdoor fan rotation speed before and after the mode switching is as follows:
P2＝F1/F2*P1+Di1/Di2*K1+Do1/Do2*K2；
in the formula, P2 is the adaptive opening degree of the electronic expansion valve, F1 is the compressor frequency after mode switching, F2 is the compressor frequency before mode switching, P1 is the opening degree of the electronic expansion valve before mode switching, Di1 is the indoor fan speed after mode switching, Di2 is the indoor fan speed before mode switching, Do1 is the outdoor fan speed after mode switching, Do2 is the outdoor fan speed before mode switching, and K1 and K2 are constants.
Optionally, the value of K1 is 40 to 80, and the value of K2 is 5 to 15.
It can be understood that, since the refrigeration and dehumidification switching system of the air conditioner according to the embodiment of the present invention is a system for implementing the refrigeration and dehumidification switching method of the air conditioner according to the embodiment, the system disclosed in the embodiment is relatively simple in description since it corresponds to the method disclosed in the embodiment, and the related points can be referred to the partial description of the method.
Claims (10)
1. The refrigeration and dehumidification switching method of the air conditioner is characterized by comprising the following steps of:
step 1, after the air conditioner is switched between a refrigeration mode and a dehumidification mode, calculating the adaptive opening of the electronic expansion valve according to the opening of the electronic expansion valve before mode switching, the compressor frequency, the indoor fan rotating speed and the outdoor fan rotating speed before and after mode switching;
and 2, adjusting an electronic expansion valve according to the adaptive opening degree, wherein the electronic expansion valve is used for controlling the flow of the refrigerant.
2. The cooling and dehumidifying switching method of an air conditioner as claimed in claim 1, wherein said step 1 comprises:
acquiring a current operation mode of the air conditioner, and acquiring the opening degree of an electronic expansion valve, the frequency of a compressor, the rotating speed of an indoor fan and the rotating speed of an outdoor fan corresponding to the current refrigeration mode of the air conditioner if the current operation mode of the air conditioner is the refrigeration mode;
detecting whether the air conditioner switches the operation mode, if so, detecting the operation mode after the air conditioner is switched, and if the switched operation mode is the dehumidification mode, acquiring the corresponding compressor frequency, the indoor fan rotating speed and the outdoor fan rotating speed after the air conditioner is switched to the dehumidification mode;
and calculating the adaptive opening of the electronic expansion valve according to the opening of the electronic expansion valve, the frequency of the compressor, the rotating speed of the indoor fan and the rotating speed of the outdoor fan.
3. The cooling and dehumidifying switching method of an air conditioner as claimed in claim 1, wherein said step 1 further comprises:
acquiring a current operation mode of the air conditioner, and acquiring the opening degree of an electronic expansion valve, the frequency of a compressor, the rotating speed of an indoor fan and the rotating speed of an outdoor fan corresponding to the current dehumidification mode of the air conditioner if the current operation mode of the air conditioner is the dehumidification mode;
detecting whether the air conditioner switches the operation mode, if so, detecting the operation mode after the air conditioner is switched, and if the switched operation mode is the refrigeration mode, acquiring the corresponding compressor frequency, the indoor fan rotating speed and the outdoor fan rotating speed after the air conditioner is switched to the refrigeration mode;
and calculating the adaptive opening of the electronic expansion valve according to the opening of the electronic expansion valve, the frequency of the compressor, the rotating speed of the indoor fan and the rotating speed of the outdoor fan.
4. The method for switching between cooling and dehumidifying of an air conditioner according to claim 1, wherein the formula for calculating the adaptive opening degree of the electronic expansion valve based on the compressor frequency, the indoor fan rotational speed, and the outdoor fan rotational speed before and after the mode switching is:
P2＝F1/F2*P1+Di1/Di2*K1+Do1/Do2*K2；
in the formula, P2 is the adaptive opening degree of the electronic expansion valve, F1 is the compressor frequency after mode switching, F2 is the compressor frequency before mode switching, P1 is the opening degree of the electronic expansion valve before mode switching, Di1 is the indoor fan speed after mode switching, Di2 is the indoor fan speed before mode switching, Do1 is the outdoor fan speed after mode switching, Do2 is the outdoor fan speed before mode switching, and K1 and K2 are constants.
5. The cooling and dehumidifying switching method of an air conditioner as claimed in claim 4, wherein the value of K1 is 40 to 80, and the value of K2 is 5 to 15.
6. Refrigeration dehumidification switched systems of air conditioner characterized in that includes:
the calculation unit is used for calculating the adaptive opening of the electronic expansion valve according to the opening of the electronic expansion valve before mode switching, the compressor frequency, the indoor fan rotating speed and the outdoor fan rotating speed before and after mode switching after the air conditioner is switched between the refrigeration mode and the dehumidification mode;
and the adjusting unit is used for adjusting the electronic expansion valve according to the adaptive opening degree, and the electronic expansion valve is used for controlling the flow of the refrigerant.
7. The cooling and dehumidifying switching system of an air conditioner as claimed in claim 6, further comprising:
the system comprises an acquisition unit, a control unit and a control unit, wherein the acquisition unit is used for acquiring the current operation mode of the air conditioner, and acquiring the opening degree of an electronic expansion valve, the frequency of a compressor, the rotating speed of an indoor fan and the rotating speed of an outdoor fan corresponding to the current refrigeration mode of the air conditioner if the current operation mode of the air conditioner is a refrigeration mode;
and the detection unit is used for detecting whether the air conditioner switches the operation mode, detecting the operation mode after the air conditioner is switched if the operation mode is switched, and acquiring the corresponding compressor frequency, the indoor fan rotating speed and the outdoor fan rotating speed after the air conditioner is switched to the dehumidification mode if the operation mode after the air conditioner is switched to the dehumidification mode.
8. The system for switching refrigeration and dehumidification of an air conditioner as claimed in claim 6, wherein the obtaining unit is further configured to obtain a current operation mode of the air conditioner, and if the current operation mode of the air conditioner is a dehumidification mode, obtain an opening degree of an electronic expansion valve, a compressor frequency, an indoor fan rotation speed and an outdoor fan rotation speed corresponding to the current dehumidification mode of the air conditioner;
the detection unit is also used for detecting whether the air conditioner switches the operation mode, if so, detecting the operation mode after the air conditioner is switched, and if the switched operation mode is the refrigeration mode, acquiring the corresponding compressor frequency, the indoor fan rotating speed and the outdoor fan rotating speed after the air conditioner is switched to the refrigeration mode.
9. The system for switching cooling and dehumidifying of an air conditioner according to claim 6, wherein the formula for calculating the adaptive opening degree of the electronic expansion valve based on the compressor frequency, the indoor fan rotational speed, and the outdoor fan rotational speed before and after the mode switching is:
P2＝F1/F2*P1+Di1/Di2*K1+Do1/Do2*K2；
in the formula, P2 is the adaptive opening degree of the electronic expansion valve, F1 is the compressor frequency after mode switching, F2 is the compressor frequency before mode switching, P1 is the opening degree of the electronic expansion valve before mode switching, Di1 is the indoor fan speed after mode switching, Di2 is the indoor fan speed before mode switching, Do1 is the outdoor fan speed after mode switching, Do2 is the outdoor fan speed before mode switching, and K1 and K2 are constants.
10. The cooling and dehumidifying switching method of an air conditioner as claimed in claim 9, wherein the value of K1 is 40 to 80, and the value of K2 is 5 to 15.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114963429A (en) * | 2022-04-22 | 2022-08-30 | 青岛海尔空调器有限总公司 | Air conditioner dehumidification control method and system, storage medium and air conditioner |
| CN114963427A (en) * | 2022-04-22 | 2022-08-30 | 青岛海尔空调器有限总公司 | Compressor frequency control-based constant-temperature dehumidification method and system for air conditioner |
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| JP2005046744A (en) * | 2003-07-29 | 2005-02-24 | Orion Mach Co Ltd | Compressed air dehumidifier |
| JP2006207932A (en) * | 2005-01-28 | 2006-08-10 | Matsushita Electric Ind Co Ltd | Air conditioner |
| CN105378392A (en) * | 2013-05-27 | 2016-03-02 | 三菱电机株式会社 | air conditioner |
| CN105637300A (en) * | 2013-10-17 | 2016-06-01 | 大金工业株式会社 | Air conditioner |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114963429A (en) * | 2022-04-22 | 2022-08-30 | 青岛海尔空调器有限总公司 | Air conditioner dehumidification control method and system, storage medium and air conditioner |
| CN114963427A (en) * | 2022-04-22 | 2022-08-30 | 青岛海尔空调器有限总公司 | Compressor frequency control-based constant-temperature dehumidification method and system for air conditioner |
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| CN110906515B (en) | 2021-07-23 |
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