CN114151944A - Control method and device of air conditioner, storage medium and air conditioner - Google Patents

Control method and device of air conditioner, storage medium and air conditioner Download PDF

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Publication number
CN114151944A
CN114151944A CN202111481576.0A CN202111481576A CN114151944A CN 114151944 A CN114151944 A CN 114151944A CN 202111481576 A CN202111481576 A CN 202111481576A CN 114151944 A CN114151944 A CN 114151944A
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China
Prior art keywords
pressure temperature
air conditioner
outdoor fan
compressor
controlling
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Granted
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CN202111481576.0A
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Chinese (zh)
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CN114151944B (en
Inventor
尚瑞
秦海燕
赵振
李思佳
陈志杰
黄昌成
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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Publication of CN114151944A publication Critical patent/CN114151944A/en
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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
    • 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
    • F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Abstract

The invention provides a control method and device of an air conditioner, a storage medium and the air conditioner, wherein the method comprises the following steps: under the condition of heating operation of the air conditioner, when a compressor is started, an outdoor fan of the air conditioner is controlled to be in a closed state, and a first high-pressure temperature of the air conditioner is obtained after first preset time; and after second preset time, controlling whether the four-way reversing valve is powered on and/or whether the outdoor fan is started or not according to the first high-pressure temperature variation of the current high-pressure temperature of the air conditioner relative to the first high-pressure temperature. The scheme provided by the invention can achieve the aim of normally switching the four-way reversing valve.

Description

Control method and device of air conditioner, storage medium and air conditioner
Technical Field
The invention relates to the field of control, in particular to a control method and device of an air conditioner, a storage medium and the air conditioner.
Background
The four-way reversing valve is used as one of core components of the air conditioner and is used for changing the functions of two heat exchangers in the system by changing the flow direction of refrigerant in the system in a cooling or heating mode, so that the aim of switching cooling or heating is fulfilled. The realization of the reversing of the refrigerant flow direction mainly depends on the pressure difference at the two ends of the piston to push the piston to realize the reversing. However, if the quantity of refrigerant is insufficient during the reversing of the four-way reversing valve, the reversing pressure difference of the four-way reversing valve is insufficient, and the reversing is unsuccessful.
Disclosure of Invention
The invention mainly aims to overcome the defects of the related technologies and provides a control method and device of an air conditioner, a storage medium and the air conditioner so as to solve the problem that the reversing pressure difference is insufficient due to insufficient refrigerant quantity when a four-way valve reverses in the related technologies and further the reversing is unsuccessful.
One aspect of the present invention provides a method for controlling an air conditioner, including: under the condition of heating operation of the air conditioner, when a compressor is started, an outdoor fan of the air conditioner is controlled to be in a closed state, and a first high-pressure temperature of the air conditioner is obtained after first preset time; and after second preset time, controlling whether the four-way reversing valve is powered on and/or whether the outdoor fan is started or not according to the first high-pressure temperature variation of the current high-pressure temperature of the air conditioner relative to the first high-pressure temperature.
Optionally, controlling whether the four-way reversing valve is powered on and/or whether the outdoor fan is turned on according to a first high-pressure temperature variation of the current high-pressure temperature of the air conditioner relative to the first high-pressure temperature, includes: judging whether the first high-pressure temperature variation is larger than or equal to a preset temperature value or not; if the first high-pressure temperature variation is judged to be larger than or equal to a preset temperature value, controlling the four-way valve to switch to power on and/or starting the outdoor fan; controlling the four-way reversing valve to be electrified for a fourth preset time and then controlling the outdoor fan to be started; and if the first high-pressure temperature variation is judged to be smaller than a preset temperature value, controlling whether the four-way reversing valve is powered on and/or whether the outdoor fan is started or not according to the starting time of the compressor.
Optionally, controlling whether the four-way reversing valve is powered on and/or whether the outdoor fan is turned on according to the starting time of the compressor includes: if the starting time of the compressor is less than a third preset time, keeping the outdoor fan in a closed state, obtaining the current high-pressure temperature of the air conditioner again, and controlling whether the four-way reversing valve is powered on and/or whether the outdoor fan is started or not according to a first high-pressure temperature variation of the current high-pressure temperature of the air conditioner relative to the first high-pressure temperature; and if the starting time of the compressor is more than or equal to a third preset time, acquiring the current high-pressure temperature of the air conditioner again, and controlling whether the four-way reversing valve is powered on and/or whether the outdoor fan is started or not according to a second high-pressure temperature variation of the current high-pressure temperature of the air conditioner relative to the first high-pressure temperature.
Optionally, controlling whether the four-way reversing valve is powered on and/or whether the outdoor fan is turned on according to a second high-pressure temperature variation of the current high-pressure temperature of the air conditioner relative to the first high-pressure temperature includes: judging whether the second high-pressure temperature variation is larger than or equal to a preset temperature value or not; if the second high-pressure temperature variation is judged to be larger than or equal to a preset temperature value, controlling the four-way valve to switch to power on and/or starting the outdoor fan; and if the second high-pressure temperature variation is smaller than the preset temperature value, controlling the running frequency of the compressor to increase by a first preset frequency value, and controlling whether the four-way reversing valve is powered on and/or whether the outdoor fan is started or not according to the starting time of the compressor.
Optionally, after controlling the operating frequency of the compressor to increase by a first preset frequency value, controlling whether the four-way reversing valve is powered on and/or whether the outdoor fan is turned on according to the start time of the compressor, including: if the starting time of the compressor is more than or equal to a fifth preset time, controlling the four-way reversing valve to be powered on and/or the outdoor fan to be started; if the starting time of the compressor is less than the fifth preset time, after the sixth preset time, the current high-pressure temperature of the air conditioner is obtained again, and whether the four-way reversing valve is powered on and/or whether the outdoor fan is started is controlled according to a second high-pressure temperature variation of the current high-pressure temperature of the air conditioner relative to the first high-pressure temperature; and controlling the four-way valve to switch to power on and/or the outdoor fan to start up until the second high-pressure temperature variation of the current high-pressure temperature of the air conditioner relative to the first high-pressure temperature is greater than or equal to a preset temperature value.
Optionally, the method further comprises: and after the four-way valve is controlled to switch to power on and/or the outdoor fan is started, the current high-pressure temperature of the air conditioner is obtained again, and the running frequency of the compressor is controlled according to the third high-pressure temperature variation of the current high-pressure temperature of the air conditioner relative to the first high-pressure temperature.
Optionally, controlling the operating frequency of the compressor according to a third high-pressure temperature variation amount of the current high-pressure temperature of the air conditioner relative to the first high-pressure temperature includes: if the third high-pressure temperature variation is greater than or equal to a preset temperature value, controlling the operating frequency of the compressor to be adjusted to the initial operating frequency; and if the third high-pressure temperature variation is smaller than a preset temperature value, controlling the running frequency of the compressor to be increased by a second preset frequency value.
Another aspect of the present invention provides a control apparatus of an air conditioner, including: the control unit is used for controlling an outdoor fan of the air conditioner to be in a closed state when the compressor is started under the condition of heating operation of the air conditioner; the acquisition unit is used for acquiring a first high-pressure temperature of the air conditioner after the control unit controls an outdoor fan of the air conditioner to be in a closed state for a first preset time; the control unit is further configured to: and after second preset time, controlling whether the four-way reversing valve is powered on and/or whether the outdoor fan is started or not according to the first high-pressure temperature variation of the current high-pressure temperature of the air conditioner relative to the first high-pressure temperature.
Optionally, the controlling unit, according to a first high-pressure temperature variation of the current high-pressure temperature of the air conditioner relative to the first high-pressure temperature, controls whether the four-way reversing valve is powered on and/or whether the outdoor fan is turned on, and includes: judging whether the first high-pressure temperature variation is larger than or equal to a preset temperature value or not; if the first high-pressure temperature variation is judged to be larger than or equal to a preset temperature value, controlling the four-way valve to switch to power on and/or starting the outdoor fan; controlling the four-way reversing valve to be electrified for a fourth preset time and then controlling the outdoor fan to be started; and if the first high-pressure temperature variation is judged to be smaller than a preset temperature value, controlling whether the four-way reversing valve is powered on and/or whether the outdoor fan is started or not according to the starting time of the compressor.
Optionally, the controlling unit, which controls whether the four-way reversing valve is powered on and/or whether the outdoor fan is turned on according to the starting time of the compressor, includes: if the starting time of the compressor is less than a third preset time, keeping the outdoor fan in a closed state, obtaining the current high-pressure temperature of the air conditioner again, and controlling whether the four-way reversing valve is powered on and/or whether the outdoor fan is started or not according to a first high-pressure temperature variation of the current high-pressure temperature of the air conditioner relative to the first high-pressure temperature; and if the starting time of the compressor is more than or equal to a third preset time, acquiring the current high-pressure temperature of the air conditioner again, and controlling whether the four-way reversing valve is powered on and/or whether the outdoor fan is started or not according to a second high-pressure temperature variation of the current high-pressure temperature of the air conditioner relative to the first high-pressure temperature.
Optionally, the controlling unit, according to a second high-pressure temperature variation of the current high-pressure temperature of the air conditioner relative to the first high-pressure temperature, controls whether the four-way reversing valve is powered on and/or whether the outdoor fan is turned on, and includes: judging whether the second high-pressure temperature variation is larger than or equal to a preset temperature value or not; if the second high-pressure temperature variation is judged to be larger than or equal to a preset temperature value, controlling the four-way valve to switch to power on and/or starting the outdoor fan; and if the second high-pressure temperature variation is smaller than the preset temperature value, controlling the running frequency of the compressor to increase by a first preset frequency value, and controlling whether the four-way reversing valve is powered on and/or whether the outdoor fan is started or not according to the starting time of the compressor.
Optionally, after controlling the operating frequency of the compressor to increase by a first preset frequency value, the control unit controls whether the four-way reversing valve is powered on and/or whether the outdoor fan is turned on according to the start time of the compressor, including: if the starting time of the compressor is more than or equal to a fifth preset time, controlling the four-way reversing valve to be powered on and/or the outdoor fan to be started; if the starting time of the compressor is less than the fifth preset time, after the sixth preset time, the current high-pressure temperature of the air conditioner is obtained again, and whether the four-way reversing valve is powered on and/or whether the outdoor fan is started is controlled according to a second high-pressure temperature variation of the current high-pressure temperature of the air conditioner relative to the first high-pressure temperature; and controlling the four-way valve to switch to power on and/or the outdoor fan to start up until the second high-pressure temperature variation of the current high-pressure temperature of the air conditioner relative to the first high-pressure temperature is greater than or equal to a preset temperature value.
Optionally, the obtaining unit is further configured to: after the control unit controls the four-way valve to switch up and/or the outdoor fan to be started, the current high-pressure temperature of the air conditioner is obtained again; the control unit is further configured to: and controlling the running frequency of the compressor according to a third high-pressure temperature variation of the current high-pressure temperature of the air conditioner relative to the first high-pressure temperature.
Optionally, the controlling unit controls the operating frequency of the compressor according to a third high-pressure temperature variation of the current high-pressure temperature of the air conditioner relative to the first high-pressure temperature, and includes: if the third high-pressure temperature variation is greater than or equal to a preset temperature value, controlling the operating frequency of the compressor to be adjusted to the initial operating frequency; and if the third high-pressure temperature variation is smaller than a preset temperature value, controlling the running frequency of the compressor to be increased by a second preset frequency value.
A further aspect of the invention provides a storage medium having stored thereon a computer program which, when executed by a processor, carries out the steps of any of the methods described above.
Yet another aspect of the present invention provides an air conditioner comprising a processor, a memory, and a computer program stored on the memory and operable on the processor, wherein the processor implements the steps of any of the methods described above when executing the program.
The invention further provides an air conditioner which comprises the control device of the air conditioner.
According to the technical scheme of the invention, when the four-way reversing valve is controlled to reverse, the starting and stopping of the outdoor fan and the frequency of the compressor are controlled by comparing the high-pressure temperature change and the starting time of the compressor, so that the aim of normally switching the four-way reversing valve is fulfilled, and the problem of abnormal reversing of the four-way reversing valve caused by insufficient pressure difference and other problems when the four-way reversing valve is required to reverse in heating and the like is solved.
And judging whether enough pressure difference is available for switching the four-way reversing valve according to the high-pressure temperature change and the compressor starting time, and controlling the outdoor fan to start and stop according to the state of the four-way reversing valve. The frequency of the compressor is controlled in different time periods, the frequency change of the compressor is not controlled when the compressor is just started, and the frequency of the compressor is controlled only when the starting time requirement is met.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of an embodiment of an air conditioner control method according to the present invention;
FIG. 2 is a schematic diagram of an air conditioning system according to an embodiment of the present invention;
FIG. 3 is a schematic flow chart illustrating one embodiment of controlling whether the four-way reversing valve is powered on and/or whether the outdoor fan is turned on based on a first high-pressure temperature variation of the high-pressure temperature of the air conditioner relative to the first high-pressure temperature;
fig. 4 is a method diagram illustrating another embodiment of a control method of an air conditioner according to the present invention;
FIG. 5 is a schematic diagram of a control method of an air conditioner according to an embodiment of the present invention;
FIG. 6 is a method diagram illustrating another embodiment of a method for controlling an air conditioner according to the present invention;
fig. 7 is a block diagram illustrating an embodiment of a control apparatus for an air conditioner according to the present invention;
the reference numerals are represented as:
1. a compressor; 2. a four-way reversing valve; 3. an outdoor heat exchanger; 4. a gas-liquid separator; 5. a reservoir; 6. an electronic expansion valve; 7. an indoor heat exchanger; 8. an exhaust temperature bulb.
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.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Fig. 2 is a schematic diagram of an air conditioning system according to an embodiment of the present invention. As shown in fig. 2, when heating is started, high-temperature and high-pressure refrigerant gas discharged from the compressor 1 enters the indoor heat exchanger 7 through the four-way selector valve 2, exchanges heat with an indoor heat source, and is condensed into refrigerant liquid. Refrigerant liquid enters the liquid storage device 5 after being throttled by the electronic expansion valve 6, then enters the outdoor heat exchanger 3, exchanges heat in the outdoor heat exchanger, absorbs heat of outdoor environment, is evaporated into refrigerant gas, returns to the four-way reversing valve, enters the gas-liquid separator 4 to be subjected to gas-liquid separation, and then returns to the compressor to complete primary circulation.
The invention provides a control method of an air conditioner.
Fig. 1 is a method schematic diagram of an embodiment of a control method of an air conditioner provided by the present invention.
As shown in fig. 1, according to an embodiment of the present invention, the control method includes at least step S110 and step S120.
And S110, under the condition of heating operation of the air conditioner, when a compressor is started, controlling an outdoor fan of the air conditioner to be in a closed state, and acquiring a first high-pressure temperature of the air conditioner after a first preset time.
Specifically, in the heating operation of the air conditioning unit, when the compressor is started, the outdoor fan is controlled to be in a closed state (in order to ensure that a sufficient reversing pressure difference exists, the outdoor fan is controlled to be in a closed state), and after the outdoor fan is closed for a first preset time Δ t1, a first high-pressure temperature TA is obtained. And (3) considering that the high-pressure temperature and the low-pressure temperature are not greatly different when the compressor is just started, acquiring the front and rear high-pressure temperatures, and judging the pressure difference of the four-way reversing valve according to the front and rear changes of the high-pressure temperature.
And step S120, after a second preset time, controlling whether the four-way reversing valve is powered on and/or whether the outdoor fan is started or not according to a first high-pressure temperature variation of the high-pressure temperature of the air conditioner relative to the first high-pressure temperature.
After the first high pressure temperature TA is obtained for a second preset time Δ T2, the high pressure temperature TB is obtained again, and a first high pressure temperature variation Δ T relative to the first high pressure temperature TA is calculated, that is, Δ T ═ TB-TA, where the second preset time is greater than the first preset time, and may be 15s, for example. And controlling whether the four-way reversing valve is powered on and/or whether the outdoor fan is started or not according to the first high-pressure temperature variation delta T.
Fig. 3 is a schematic flow chart illustrating an embodiment of controlling whether the four-way reversing valve is powered on and/or whether the outdoor fan is turned on according to a first high-pressure temperature variation of the high-pressure temperature of the air conditioner relative to the first high-pressure temperature. As shown in fig. 3, step S120 includes step S121, step S122, and step S123.
Step S121, determining whether the first high-pressure temperature variation is greater than or equal to a preset temperature value Δ T1.
And S122, if the first high-pressure temperature variation is judged to be larger than or equal to a preset temperature value delta T1, controlling the four-way valve to switch to power on and/or starting the outdoor fan.
Specifically, whether the delta T is more than or equal to the delta T1 (the delta T1 can be 5 ℃ for example) is judged, if the delta T is more than or equal to the delta T1, the reversing pressure difference condition is met, the four-way reversing valve is powered on, and the outdoor fan is controlled to be started. Preferably, the outdoor fan is controlled to be turned on after the four-way reversing valve is controlled to be powered on for a fourth preset time delta t4 (the time delta t4 can be 4s for example).
And S123, if the first high-pressure temperature variation is judged to be smaller than a preset temperature value, controlling whether the four-way reversing valve is powered on and/or whether the outdoor fan is started or not according to the starting time of the compressor.
In one embodiment, the step of controlling whether the four-way reversing valve is powered on and/or whether the outdoor fan is started according to the starting time of the compressor comprises the following steps:
(1) if the starting time of the compressor is less than a third preset time, the outdoor fan is kept in a closed state, the current high-pressure temperature of the air conditioner is obtained again, and whether the four-way reversing valve is powered on and/or whether the outdoor fan is started is controlled according to a first high-pressure temperature variation of the current high-pressure temperature of the air conditioner relative to the first high-pressure temperature.
Specifically, if the time value of delta T is not more than or equal to the time value of delta T1, whether the starting time of the compressor reaches a third preset time or not is judged, namely, whether T is met or notCompressor startingΔ t3(Δ t3 is greater than Δ t4), if not, i.e., tCompressor startingIf the difference is less than delta T3, the outdoor fan is continuously in a closed state, the high-pressure temperature TB is obtained, the high-pressure temperature variation delta T of the obtained high-pressure temperature TB relative to the first high-pressure temperature is calculated again, the delta T is equal to TB-TA, whether the delta T is more than or equal to delta T1 is judged again, if the delta T is not equal to the first high-pressure temperature, the current high-pressure temperature TB is obtained again, whether the high-pressure temperature variation delta T of the current high-pressure temperature TB relative to the first high-pressure temperature meets the delta T more than or equal to delta T1 is judged again, until the delta T more than or equal to delta T1 is met, the four-way reversing valve is powered on, and after the time of delta T4, the outdoor fan is started.
(2) And if the starting time of the compressor is more than or equal to a third preset time, acquiring the current high-pressure temperature of the air conditioner again, and controlling whether the four-way reversing valve is powered on and/or whether the outdoor fan is started or not according to a second high-pressure temperature variation of the current high-pressure temperature of the air conditioner relative to the first high-pressure temperature.
Specifically, if t is satisfiedCompressor startingAnd if the current high-pressure temperature TB is larger than or equal to the delta T3, acquiring the current high-pressure temperature TB again, calculating a high-pressure temperature variation delta T of the current high-pressure temperature TB relative to the first high-pressure temperature TA (at the moment, the delta T is a second high-pressure temperature variation, and the delta T is TB-TA), and controlling whether the four-way reversing valve is powered on and/or whether the outdoor fan is started or not according to the delta T-TA.
In one specific embodiment, whether the second high-pressure temperature variation is greater than or equal to a preset temperature value is judged; if the second high-pressure temperature variation is judged to be larger than or equal to a preset temperature value, controlling the four-way valve to switch to power on and/or starting the outdoor fan; the outdoor fan is controlled to be started after the four-way reversing valve is controlled to be powered on for a fourth preset time; and if the second high-pressure temperature variation is smaller than the preset temperature value, controlling the running frequency of the compressor to increase by a first preset frequency value, and controlling whether the four-way reversing valve is powered on and/or whether the outdoor fan is started or not according to the starting time of the compressor.
After the operation frequency of the compressor is controlled to be increased by a first preset frequency value, whether the four-way reversing valve is powered on and/or whether the outdoor fan is started is controlled according to the starting time of the compressor, and the method comprises the following steps: if the starting time of the compressor is more than or equal to a fifth preset time, controlling the four-way reversing valve to be powered on and/or the outdoor fan to be started; the outdoor fan is controlled to be started after the four-way reversing valve is controlled to be powered on for a fourth preset time; if the starting time of the compressor is less than the fifth preset time, the high-pressure temperature of the air conditioner is obtained again after the sixth preset time, and whether the four-way reversing valve is powered on and/or whether the outdoor fan is started is controlled according to a second high-pressure temperature variation of the high-pressure temperature of the air conditioner relative to the first high-pressure temperature; and controlling the four-way valve to switch to power on and/or the outdoor fan to start up until the second high-pressure temperature variation of the high-pressure temperature of the air conditioner relative to the first high-pressure temperature is greater than or equal to a preset temperature value. And after the four-way reversing valve is controlled to be electrified for a fourth preset time, the outdoor fan is controlled to be started.
For example, whether the second high-pressure temperature variation delta T meets the condition that the delta T is larger than or equal to the delta T1 or not is judged, if the second high-pressure temperature variation delta T is larger than or equal to the delta T1, the four-way reversing valve is powered on, and after the fourth preset time delta T4, the outdoor fan is started; if the delta T is not more than or equal to the delta T1, increasing the running frequency of the compressor of the unit by a first preset frequency value delta F1 (for example, the delta F1 can be 5HZ), and judging whether the T is metCompressor startingΔ t5 (the fifth preset time Δ t5, Δ t5 is greater than Δ t3, which may be 120s, for example); if t is satisfiedCompressor startingThe four-way reversing valve is electrified to be more than or equal to delta t5, and after delta t4 time, the outdoor fan is started; if t is not satisfiedCompressor startingΔ T5, the high pressure temperature TB is obtained again after the time Δ T6 (the sixth preset time Δ T6 is less than Δ T5, for example, 20s), and the second high pressure temperature variation Δ T is calculated, where Δ T is TB-TA. Is judged to beIf the delta T is not more than or equal to the delta T1, if the delta T is not more than or equal to the delta T1, the running frequency of the compressor is increased by delta F1 until the delta T is more than or equal to the delta T1 or T is metCompressor startingAnd the four-way reversing valve is electrified to be more than or equal to delta t5, and the outdoor fan is started after delta t4 time. After the operation frequency of the compressor is increased, the pressure difference is changed, so that after the frequency is increased for a period of time (the sixth preset time delta T6), whether the pressure difference condition is met or not (whether the pressure difference condition is met or not is larger than delta T1) is continuously judged, and if the pressure difference condition is met, the four-way reversing valve is electrified and reversed, and the pressure difference condition and the time condition are not met, the frequency is continuously increased by delta F1.
Fig. 4 is a method diagram illustrating another embodiment of a control method of an air conditioner according to the present invention.
As shown in fig. 4, based on the above embodiment, according to another embodiment of the present invention, the control method further includes step S130.
And S130, after the four-way valve is controlled to switch to power on and/or the outdoor fan is started, the current high-pressure temperature of the air conditioner is obtained again, and the running frequency of the compressor is controlled according to a third high-pressure temperature variation of the high-pressure temperature of the air conditioner relative to the first high-pressure temperature.
Specifically, the four-way reversing valve is powered on, the current high-pressure temperature TB is obtained again after the outdoor fan is started, and a third high-pressure temperature variation Δ T of the current high-pressure temperature TB relative to the first high-pressure temperature TA is calculated, where Δ T is TB-TA.
In one embodiment, the controlling the operation frequency of the compressor according to a third high pressure temperature variation amount of the high pressure temperature of the air conditioner with respect to the first high pressure temperature includes: if the third high-pressure temperature variation is greater than or equal to a preset temperature value, controlling the operating frequency of the compressor to be adjusted to the initial operating frequency; and if the third high-pressure temperature variation is smaller than a preset temperature value, controlling the running frequency of the compressor to be increased by a second preset frequency value.
For example, it is determined whether the third high-pressure temperature variation satisfies Δ T ≧ Δ T1, if the condition is satisfied, the compressor frequency is adjusted to the initial starting frequency, and if the condition is not satisfied, the compressor operating frequency is increased by a second preset frequency value Δ F2 (the second preset frequency value Δ F2 is smaller than the first preset frequency value Δ F1, which may be 3HZ, for example).
For clearly explaining the technical solution of the present invention, the following describes an execution flow of the control method of the air conditioner provided by the present invention with a specific embodiment.
Fig. 5 is a schematic method diagram of a control method of an air conditioner according to an embodiment of the present invention. As shown in fig. 5, the unit is operated for heating, the compressor is started, the outdoor fan is controlled to be in a closed state at this time, after the outdoor fan is closed for a first preset time Δ T1(Δ T1 is less than Δ T3, which may be 5s), the high-pressure temperature TA (first high-pressure temperature) is obtained, after a second preset time Δ T2(Δ T2 is greater than Δ T1, which may be 15s), the high-pressure temperature TB is obtained again, and the high-pressure temperature variation Δ T is calculated, where Δ T is TB-TA.
And judging whether the delta T is more than or equal to the delta T1 (the preset temperature value delta T1 can be 5 ℃), if the delta T is more than or equal to the delta T1, electrifying the four-way reversing valve, and starting the outdoor fan after the delta T4 (the delta T4 is less than the delta T3 and can be 4 s). If the delta T is not more than or equal to the delta T1, whether the starting time of the compressor reaches a third preset time is judged, namely whether the T is metCompressor startingThe method comprises the steps that not less than delta T3 (delta T3 is larger than delta T4), if the delta T3 is not larger than delta T4, the outdoor fan is continuously in a closed state, high-pressure temperature TB is obtained, high-pressure temperature variation delta T is calculated again, delta T is TB-TA, whether the delta T is larger than or equal to delta T1 is judged again until the condition that the delta T is larger than or equal to delta T1 is met, the four-way reversing valve is powered on, the outdoor fan is started after delta T4 time, or if the delta T is not larger than or equal to delta T1, the outdoor fan is started if the T is metCompressor startingAnd if the temperature is more than or equal to the delta T3, acquiring the high-pressure temperature TB, and calculating the high-pressure temperature change delta T again, wherein the delta T is TB-TA. Judging whether the delta T is more than or equal to the delta T1: if the delta T is larger than or equal to the delta T1, the four-way reversing valve is electrified, and after the delta T4 time, the outdoor fan is started; if the delta T is not more than or equal to the delta T1, increasing the running frequency of the compressor of the unit by delta F1 (the delta F1 can be 5HZ), and judging whether the T is metCompressor startingΔ t5(Δ t5 is greater than Δ t3 and can be 120 s); if the condition is met, the four-way reversing valve is electrified. After the time of delta t4, the outdoor fan is started; if the condition is not met, the high-pressure temperature is acquired again after the time of delta t6 (delta t6 is less than delta t5 and can be 20s)And TB, calculating the high-pressure temperature change quantity delta T, wherein delta T is TB-TA. And judging whether the delta T is more than or equal to the delta T1, if the delta T is not more than or equal to the delta T1, increasing the running frequency of the compressor of the unit by delta F1 until the delta T is more than or equal to the delta T1 or the compressor is started more than or equal to the delta T5, electrifying the four-way reversing valve, and starting the outdoor fan after the delta T4 time.
After the outdoor fan is started, the high-pressure temperature TB is obtained, and the high-pressure temperature variation delta T is calculated and is equal to TB-TA. And judging whether the delta T is more than or equal to the delta T1, if the condition is met, adjusting the frequency of the compressor to be the initial starting frequency, and if the condition is not met, increasing the running frequency of the compressor by delta F2 (the delta F2 is less than the delta F1 and can be 3 HZ).
Fig. 6 is a schematic method diagram of another embodiment of the method for controlling an air conditioner according to the present invention. As shown in fig. 6, taking an actual operation state of a certain unit on a certain day as an example, the unit is in a heating operation, the compressor is started, the outdoor fan is in a closed state, after the time of Δ T1, the high-pressure temperature TA is obtained, and after the time of Δ T2, the high-pressure temperature TB is obtained again, the high-pressure temperature variation Δ T is calculated, it is determined that Δ T is not less than Δ T1, it is continuously determined whether T is satisfied that the compressor is started not less than Δ T3, it is determined that the condition is not satisfied, and the outdoor fan is kept in the closed state. The method comprises the steps of obtaining a high-pressure temperature TB again, calculating a high-pressure temperature variation delta T, judging that the delta T is not more than or equal to the delta T1, continuously judging whether the compressor starting time T is more than or equal to the delta T3, judging that the condition is met, obtaining the high-pressure temperature TB again, calculating the high-pressure temperature variation delta T, continuously judging that the delta T is not more than or equal to the delta T1, increasing the unit operating frequency by delta F1, continuously judging that the compressor starting time T is more than or equal to the delta T5, and judging that the condition is not met. And after the time of delta T6, acquiring the high-pressure temperature TB again, calculating the high-pressure temperature variation delta T, judging that the delta T is not more than or equal to delta T1, increasing the unit operating frequency delta F1, continuously judging whether the T compressor is started to be more than or equal to delta T5, judging that the condition is met, and electrifying the four-way reversing valve. After the time of delta T4, the outdoor fan is started, the high-pressure temperature TB is acquired again, the high-pressure temperature variation delta T is calculated, whether the delta T is larger than or equal to the delta T1 is judged, the condition is judged to be met, and the unit operation frequency is adjusted to be the initial frequency.
The invention also provides a control device of the air conditioner.
Fig. 7 is a block diagram of an embodiment of a control device of an air conditioner according to the present invention. As shown in fig. 7, the control apparatus 100 of the air conditioner includes a control unit 110 and an acquisition unit 120.
The control unit 110 is configured to control an outdoor fan of the air conditioner to be in a turned-off state when the compressor is started in a case where the air conditioner is in a heating operation.
Specifically, in the heating operation of the air conditioning unit, when the compressor is started, the outdoor fan is controlled to be in a closed state (in order to ensure that a sufficient reversing pressure difference exists, the outdoor fan is controlled to be in a closed state), and after the outdoor fan is closed for a first preset time Δ t1, a first high-pressure temperature TA is obtained. And (3) considering that the high-pressure temperature and the low-pressure temperature are not greatly different when the compressor is just started, acquiring the front and rear high-pressure temperatures, and judging the pressure difference of the four-way reversing valve according to the front and rear changes of the high-pressure temperature.
The obtaining unit 120 is configured to obtain a first high-pressure temperature of the air conditioner after the control unit controls an outdoor fan of the air conditioner to be in an off state for a first preset time. The control unit 130 is further configured to: and after second preset time, controlling whether the four-way reversing valve is powered on and/or whether the outdoor fan is started or not according to the first high-pressure temperature variation of the current high-pressure temperature of the air conditioner relative to the first high-pressure temperature.
Specifically, after the first high pressure temperature TA is obtained for a second preset time Δ T2, the high pressure temperature TB is obtained again, and a first high pressure temperature variation Δ T1 with respect to the first high pressure temperature TA is calculated, i.e., Δ T1 is TB-TA, wherein the second preset time is greater than the first preset time, and may be 15s, for example. And controlling whether the four-way reversing valve is powered on and/or whether the outdoor fan is started or not according to the first high-pressure temperature variation delta T1.
Fig. 3 is a schematic flow chart illustrating an embodiment of controlling whether the four-way reversing valve is powered on and/or whether the outdoor fan is turned on according to a first high-pressure temperature variation of the high-pressure temperature of the air conditioner relative to the first high-pressure temperature. As shown in fig. 3, the controlling unit controls whether the four-way reversing valve is powered on and/or whether the outdoor fan is turned on according to a first high-pressure temperature variation of the current high-pressure temperature of the air conditioner relative to the first high-pressure temperature, and may specifically include step S121 and step S122.
Step S121, determining whether the first high-pressure temperature variation is greater than or equal to a preset temperature value Δ T1.
And S122, if the first high-pressure temperature variation is judged to be larger than or equal to a preset temperature value delta T1, controlling the four-way valve to switch to power on and/or starting the outdoor fan.
Specifically, whether the delta T is more than or equal to the delta T1 (the delta T1 can be 5 ℃ for example) is judged, if the delta T is more than or equal to the delta T1, the reversing pressure difference condition is met, the four-way reversing valve is powered on, and the outdoor fan is controlled to be started. Preferably, the outdoor fan is controlled to be turned on after the four-way reversing valve is controlled to be powered on for a fourth preset time delta t4 (the time delta t4 can be 4s for example).
And S123, if the first high-pressure temperature variation is judged to be smaller than a preset temperature value, controlling whether the four-way reversing valve is powered on and/or whether the outdoor fan is started or not according to the starting time of the compressor.
In one embodiment, the step of controlling whether the four-way reversing valve is powered on and/or whether the outdoor fan is started according to the starting time of the compressor comprises the following steps:
(1) if the starting time of the compressor is less than a third preset time, the outdoor fan is kept in a closed state, the current high-pressure temperature of the air conditioner is obtained again, and whether the four-way reversing valve is powered on and/or whether the outdoor fan is started is controlled according to a first high-pressure temperature variation of the current high-pressure temperature of the air conditioner relative to the first high-pressure temperature.
Specifically, if the time value of delta T is not more than or equal to the time value of delta T1, whether the starting time of the compressor reaches a third preset time or not is judged, namely, whether T is met or notCompressor startingΔ t3(Δ t3 is greater than Δ t4), if not, i.e., tCompressor startingIf the temperature is less than delta T3, the outdoor fan is continuously in a closed state, the high-pressure temperature TB is obtained, the high-pressure temperature variation delta T of the obtained high-pressure temperature TB relative to the first high-pressure temperature is calculated again, and the delta T is equal to TB-TA, and then the outdoor fan is started to operate againAnd judging whether the delta T is larger than or equal to the delta T1 or not, if not, acquiring the current high-pressure temperature TB again, judging whether the high-pressure temperature variation delta T of the current high-pressure temperature TB relative to the first high-pressure temperature meets the delta T larger than or equal to the delta T1 or not until the delta T is larger than or equal to the delta T1 or not, electrifying the four-way reversing valve, and starting the outdoor fan after the delta T4 time.
(2) And if the starting time of the compressor is more than or equal to a third preset time, acquiring the current high-pressure temperature of the air conditioner again, and controlling whether the four-way reversing valve is powered on and/or whether the outdoor fan is started or not according to a second high-pressure temperature variation of the current high-pressure temperature of the air conditioner relative to the first high-pressure temperature.
Specifically, if t is satisfiedCompressor startingAnd if the current high-pressure temperature TB is larger than or equal to the delta T3, acquiring the current high-pressure temperature TB again, calculating a high-pressure temperature variation delta T of the current high-pressure temperature TB relative to the first high-pressure temperature TA (at the moment, the delta T is a second high-pressure temperature variation, and the delta T is TB-TA), and controlling whether the four-way reversing valve is powered on and/or whether the outdoor fan is started or not according to the delta T-TA.
In one specific embodiment, whether the second high-pressure temperature variation is greater than or equal to a preset temperature value is judged; if the second high-pressure temperature variation is judged to be larger than or equal to a preset temperature value, controlling the four-way valve to switch to power on and/or starting the outdoor fan; the outdoor fan is controlled to be started after the four-way reversing valve is controlled to be powered on for a fourth preset time; and if the second high-pressure temperature variation is smaller than the preset temperature value, controlling the running frequency of the compressor to increase by a first preset frequency value, and controlling whether the four-way reversing valve is powered on and/or whether the outdoor fan is started or not according to the starting time of the compressor.
After the operation frequency of the compressor is controlled to be increased by a first preset frequency value, whether the four-way reversing valve is powered on and/or whether the outdoor fan is started is controlled according to the starting time of the compressor, and the method comprises the following steps: if the starting time of the compressor is more than or equal to a fifth preset time, controlling the four-way reversing valve to be powered on and/or the outdoor fan to be started; the outdoor fan is controlled to be started after the four-way reversing valve is controlled to be powered on for a fourth preset time; if the starting time of the compressor is less than the fifth preset time, the high-pressure temperature of the air conditioner is obtained again after the sixth preset time, and whether the four-way reversing valve is powered on and/or whether the outdoor fan is started is controlled according to a second high-pressure temperature variation of the high-pressure temperature of the air conditioner relative to the first high-pressure temperature; and controlling the four-way valve to switch to power on and/or the outdoor fan to start up until the second high-pressure temperature variation of the high-pressure temperature of the air conditioner relative to the first high-pressure temperature is greater than or equal to a preset temperature value. And after the four-way reversing valve is controlled to be electrified for a fourth preset time, the outdoor fan is controlled to be started.
For example, whether the second high-pressure temperature variation delta T meets the condition that the delta T is larger than or equal to the delta T1 or not is judged, if the second high-pressure temperature variation delta T is larger than or equal to the delta T1, the four-way reversing valve is powered on, and after the fourth preset time delta T4, the outdoor fan is started; if the delta T is not more than or equal to the delta T1, increasing the running frequency of the compressor of the unit by a first preset frequency value delta F1 (for example, the delta F1 can be 5HZ), and judging whether the T is metCompressor startingΔ t5 (the fifth preset time Δ t5, Δ t5 is greater than Δ t3, which may be 120s, for example); if t is satisfiedCompressor startingThe four-way reversing valve is electrified to be more than or equal to delta t5, and after delta t4 time, the outdoor fan is started; if t is not satisfiedCompressor startingΔ T5, the high pressure temperature TB is obtained again after the time Δ T6 (the sixth preset time Δ T6 is less than Δ T5, for example, 20s), and the second high pressure temperature variation Δ T is calculated, where Δ T is TB-TA. Judging whether the delta T is more than or equal to the delta T1, if the delta T is not more than or equal to the delta T1, increasing the running frequency of the compressor by delta F1 until the delta T is more than or equal to the delta T1 or T is metCompressor startingAnd the four-way reversing valve is electrified to be more than or equal to delta t5, and the outdoor fan is started after delta t4 time. After the operation frequency of the compressor is increased, the pressure difference is changed, so that after the frequency is increased for a period of time (the sixth preset time delta T6), whether the pressure difference condition is met or not (whether the pressure difference condition is met or not is larger than delta T1) is continuously judged, and if the pressure difference condition is met, the four-way reversing valve is electrified and reversed, and the pressure difference condition and the time condition are not met, the frequency is continuously increased by delta F1.
Based on the above embodiment, according to another embodiment of the present invention, the obtaining unit 120 is further configured to: after the control unit 110 controls the four-way valve to switch up and/or the outdoor fan to be started, the current high-pressure temperature of the air conditioner is obtained again; the control unit 110 is further configured to: and controlling the running frequency of the compressor according to a third high-pressure temperature variation of the current high-pressure temperature of the air conditioner relative to the first high-pressure temperature.
Specifically, the four-way reversing valve is powered on, the current high-pressure temperature TB is obtained again after the outdoor fan is started, and a third high-pressure temperature variation Δ T of the current high-pressure temperature TB relative to the first high-pressure temperature TA is calculated, where Δ T is TB-TA.
In one embodiment, the controlling unit 110 controls the operating frequency of the compressor according to a third high pressure temperature variation amount of the current high pressure temperature of the air conditioner relative to the first high pressure temperature, including: if the third high-pressure temperature variation is greater than or equal to a preset temperature value, controlling the operating frequency of the compressor to be adjusted to the initial operating frequency; and if the third high-pressure temperature variation is smaller than a preset temperature value, controlling the running frequency of the compressor to be increased by a second preset frequency value.
For example, it is determined whether the third high-pressure temperature variation satisfies Δ T ≧ Δ T1, if the condition is satisfied, the compressor frequency is adjusted to the initial starting frequency, and if the condition is not satisfied, the compressor operating frequency is increased by a second preset frequency value Δ F2 (the second preset frequency value Δ F2 is smaller than the first preset frequency value Δ F1, which may be 3HZ, for example).
The present invention also provides a storage medium corresponding to the control method of the air conditioner, on which a computer program is stored, which when executed by a processor implements the steps of any of the aforementioned methods.
The invention also provides an air conditioner corresponding to the control method of the air conditioner, which comprises a processor, a memory and a computer program which is stored on the memory and can run on the processor, wherein the processor realizes the steps of any one of the methods when executing the program.
The invention also provides an air conditioner corresponding to the control device of the air conditioner, which comprises the control device of the air conditioner.
Therefore, according to the scheme provided by the invention, when the four-way reversing valve is controlled to reverse, the starting and the stopping of the outdoor fan and the frequency of the compressor are controlled by comparing the high-pressure temperature change and the starting time of the compressor, so that the aim of normally switching the four-way reversing valve is fulfilled, and the problem of abnormal reversing of the four-way reversing valve caused by insufficient pressure difference and other problems when the four-way reversing valve is required to reverse in heating and the like is solved.
And judging whether enough pressure difference is available for switching the four-way reversing valve according to the high-pressure temperature change and the compressor starting time, and controlling the outdoor fan to start and stop according to the state of the four-way reversing valve. The frequency of the compressor is controlled in different time periods, the frequency change of the compressor is not controlled when the compressor is just started, and the frequency of the compressor is controlled only when the starting time requirement is met.
The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Other examples and implementations are within the scope and spirit of the invention and the following claims. For example, due to the nature of software, the functions described above may be implemented using software executed by a processor, hardware, firmware, hardwired, or a combination of any of these. In addition, each functional unit may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.
The units described as separate parts may or may not be physically separate, and the parts serving as the control device may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. 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 and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
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 (16)

1. A control method of an air conditioner, comprising:
under the condition of heating operation of the air conditioner, when a compressor is started, an outdoor fan of the air conditioner is controlled to be in a closed state, and a first high-pressure temperature of the air conditioner is obtained after first preset time;
and after second preset time, controlling whether the four-way reversing valve is powered on and/or whether the outdoor fan is started or not according to the first high-pressure temperature variation of the current high-pressure temperature of the air conditioner relative to the first high-pressure temperature.
2. The control method according to claim 1, wherein controlling whether the four-way reversing valve is powered on and/or whether the outdoor fan is turned on according to a first high-pressure temperature variation of a current high-pressure temperature of the air conditioner relative to the first high-pressure temperature comprises:
judging whether the first high-pressure temperature variation is larger than or equal to a preset temperature value or not;
if the first high-pressure temperature variation is judged to be larger than or equal to a preset temperature value, controlling the four-way valve to switch to power on and/or starting the outdoor fan; controlling the four-way reversing valve to be electrified for a fourth preset time and then controlling the outdoor fan to be started;
and if the first high-pressure temperature variation is judged to be smaller than a preset temperature value, controlling whether the four-way reversing valve is powered on and/or whether the outdoor fan is started or not according to the starting time of the compressor.
3. The control method of claim 2, wherein controlling whether the four-way reversing valve is powered on and/or whether the outdoor fan is turned on according to the start-up time of the compressor comprises:
if the starting time of the compressor is less than a third preset time, keeping the outdoor fan in a closed state, obtaining the current high-pressure temperature of the air conditioner again, and controlling whether the four-way reversing valve is powered on and/or whether the outdoor fan is started or not according to a first high-pressure temperature variation of the current high-pressure temperature of the air conditioner relative to the first high-pressure temperature;
and if the starting time of the compressor is more than or equal to a third preset time, acquiring the current high-pressure temperature of the air conditioner again, and controlling whether the four-way reversing valve is powered on and/or whether the outdoor fan is started or not according to a second high-pressure temperature variation of the current high-pressure temperature of the air conditioner relative to the first high-pressure temperature.
4. The control method according to claim 3, wherein controlling whether the four-way reversing valve is powered on and/or whether the outdoor fan is turned on according to a second high-pressure temperature variation of the current high-pressure temperature of the air conditioner relative to the first high-pressure temperature comprises:
judging whether the second high-pressure temperature variation is larger than or equal to a preset temperature value or not;
if the second high-pressure temperature variation is judged to be larger than or equal to a preset temperature value, controlling the four-way valve to switch to power on and/or starting the outdoor fan;
and if the second high-pressure temperature variation is smaller than the preset temperature value, controlling the running frequency of the compressor to increase by a first preset frequency value, and controlling whether the four-way reversing valve is powered on and/or whether the outdoor fan is started or not according to the starting time of the compressor.
5. The control method of claim 4, wherein controlling whether the four-way reversing valve is powered on and/or whether the outdoor fan is turned on according to the starting time of the compressor after controlling the operating frequency of the compressor to increase by a first preset frequency value comprises:
if the starting time of the compressor is more than or equal to a fifth preset time, controlling the four-way reversing valve to be powered on and/or the outdoor fan to be started;
if the starting time of the compressor is less than the fifth preset time, after the sixth preset time, the current high-pressure temperature of the air conditioner is obtained again, and whether the four-way reversing valve is powered on and/or whether the outdoor fan is started is controlled according to a second high-pressure temperature variation of the current high-pressure temperature of the air conditioner relative to the first high-pressure temperature;
and controlling the four-way valve to switch to power on and/or the outdoor fan to start up until the second high-pressure temperature variation of the current high-pressure temperature of the air conditioner relative to the first high-pressure temperature is greater than or equal to a preset temperature value.
6. The control method according to any one of claims 1 to 5, characterized by further comprising:
and after the four-way valve is controlled to switch to power on and/or the outdoor fan is started, the current high-pressure temperature of the air conditioner is obtained again, and the running frequency of the compressor is controlled according to the third high-pressure temperature variation of the current high-pressure temperature of the air conditioner relative to the first high-pressure temperature.
7. The control method according to claim 6, wherein controlling the operating frequency of the compressor according to a third high pressure temperature variation amount of the current high pressure temperature of the air conditioner with respect to the first high pressure temperature comprises:
if the third high-pressure temperature variation is greater than or equal to a preset temperature value, controlling the operating frequency of the compressor to be adjusted to the initial operating frequency;
and if the third high-pressure temperature variation is smaller than a preset temperature value, controlling the running frequency of the compressor to be increased by a second preset frequency value.
8. A control device of an air conditioner, characterized by comprising:
the control unit is used for controlling an outdoor fan of the air conditioner to be in a closed state when the compressor is started under the condition of heating operation of the air conditioner;
the acquisition unit is used for acquiring a first high-pressure temperature of the air conditioner after the control unit controls an outdoor fan of the air conditioner to be in a closed state for a first preset time;
the control unit is further configured to: and after second preset time, controlling whether the four-way reversing valve is powered on and/or whether the outdoor fan is started or not according to the first high-pressure temperature variation of the current high-pressure temperature of the air conditioner relative to the first high-pressure temperature.
9. The control device according to claim 8, wherein the control unit controls whether the four-way selector valve is powered on and/or whether the outdoor fan is turned on according to a first high-pressure temperature variation amount of a current high-pressure temperature of the air conditioner relative to the first high-pressure temperature, and includes:
judging whether the first high-pressure temperature variation is larger than or equal to a preset temperature value or not;
if the first high-pressure temperature variation is judged to be larger than or equal to a preset temperature value, controlling the four-way valve to switch to power on and/or starting the outdoor fan; controlling the four-way reversing valve to be electrified for a fourth preset time and then controlling the outdoor fan to be started;
and if the first high-pressure temperature variation is judged to be smaller than a preset temperature value, controlling whether the four-way reversing valve is powered on and/or whether the outdoor fan is started or not according to the starting time of the compressor.
10. The control device of claim 9, wherein the control unit controls whether the four-way reversing valve is powered on and/or whether the outdoor fan is turned on according to the start-up time of the compressor, and comprises:
if the starting time of the compressor is less than a third preset time, keeping the outdoor fan in a closed state, obtaining the current high-pressure temperature of the air conditioner again, and controlling whether the four-way reversing valve is powered on and/or whether the outdoor fan is started or not according to a first high-pressure temperature variation of the current high-pressure temperature of the air conditioner relative to the first high-pressure temperature;
and if the starting time of the compressor is more than or equal to a third preset time, acquiring the current high-pressure temperature of the air conditioner again, and controlling whether the four-way reversing valve is powered on and/or whether the outdoor fan is started or not according to a second high-pressure temperature variation of the current high-pressure temperature of the air conditioner relative to the first high-pressure temperature.
11. The control device according to claim 10, wherein the control unit controls whether the four-way selector valve is powered on and/or whether the outdoor fan is turned on according to a second high-pressure temperature variation amount of the current high-pressure temperature of the air conditioner relative to the first high-pressure temperature, and includes:
judging whether the second high-pressure temperature variation is larger than or equal to a preset temperature value or not;
if the second high-pressure temperature variation is judged to be larger than or equal to a preset temperature value, controlling the four-way valve to switch to power on and/or starting the outdoor fan;
and if the second high-pressure temperature variation is smaller than the preset temperature value, controlling the running frequency of the compressor to increase by a first preset frequency value, and controlling whether the four-way reversing valve is powered on and/or whether the outdoor fan is started or not according to the starting time of the compressor.
12. The control device of claim 11, wherein the control unit controls whether the four-way reversing valve is powered on and/or whether the outdoor fan is turned on according to the starting time of the compressor after controlling the operating frequency of the compressor to increase by a first preset frequency value, comprises:
if the starting time of the compressor is more than or equal to a fifth preset time, controlling the four-way reversing valve to be powered on and/or the outdoor fan to be started;
if the starting time of the compressor is less than the fifth preset time, after the sixth preset time, the current high-pressure temperature of the air conditioner is obtained again, and whether the four-way reversing valve is powered on and/or whether the outdoor fan is started is controlled according to a second high-pressure temperature variation of the current high-pressure temperature of the air conditioner relative to the first high-pressure temperature;
and controlling the four-way valve to switch to power on and/or the outdoor fan to start up until the second high-pressure temperature variation of the current high-pressure temperature of the air conditioner relative to the first high-pressure temperature is greater than or equal to a preset temperature value.
13. The control device according to any one of claims 8 to 12,
the obtaining unit is further configured to: after the control unit controls the four-way valve to switch up and/or the outdoor fan to be started, the current high-pressure temperature of the air conditioner is obtained again;
the control unit is further configured to: and controlling the running frequency of the compressor according to a third high-pressure temperature variation of the current high-pressure temperature of the air conditioner relative to the first high-pressure temperature.
14. The control device of claim 13, wherein the control unit controls the operation frequency of the compressor according to a third high pressure temperature variation amount of the current high pressure temperature of the air conditioner with respect to the first high pressure temperature, and includes:
if the third high-pressure temperature variation is greater than or equal to a preset temperature value, controlling the operating frequency of the compressor to be adjusted to the initial operating frequency;
and if the third high-pressure temperature variation is smaller than a preset temperature value, controlling the running frequency of the compressor to be increased by a second preset frequency value.
15. A storage medium, having stored thereon a computer program which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 7.
16. An air conditioner comprising a processor, a memory, and a computer program stored on the memory and operable on the processor, the processor implementing the steps of the method according to any one of claims 1 to 7 when executing the program, including the control apparatus of the air conditioner according to any one of claims 8 to 14.
CN202111481576.0A 2021-12-06 2021-12-06 Control method and device of air conditioner, storage medium and air conditioner Active CN114151944B (en)

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CN109405329A (en) * 2018-09-04 2019-03-01 珠海格力电器股份有限公司 A kind of heat pump unit control method, device, storage medium and heat pump unit
CN109631384A (en) * 2018-12-13 2019-04-16 珠海格力电器股份有限公司 A kind of control device and control method of heat pump system
CN110608543A (en) * 2019-09-16 2019-12-24 珠海格力电器股份有限公司 Heat pump system, control method, device, equipment and storage medium thereof
CN113685978A (en) * 2021-08-26 2021-11-23 珠海拓芯科技有限公司 Air conditioner control method, air conditioner control device and air conditioner

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* Cited by examiner, † Cited by third party
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JPH05264113A (en) * 1992-03-23 1993-10-12 Daikin Ind Ltd Operation control device of air conditioner
JPH0650642A (en) * 1992-07-29 1994-02-25 Daikin Ind Ltd Air conditioner
JP2001324234A (en) * 2000-05-15 2001-11-22 Hitachi Ltd Heat-pump-type heat supply equipment
CN101504236A (en) * 2009-03-13 2009-08-12 宁波奥克斯电气有限公司 Control method for four-way valve
CN104676997A (en) * 2015-03-25 2015-06-03 珠海格力电器股份有限公司 Control method and device of four-way valve
JP2017040397A (en) * 2015-08-18 2017-02-23 ダイキン工業株式会社 Air conditioner
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CN108592464A (en) * 2018-04-26 2018-09-28 珠海格力电器股份有限公司 A kind of reverse control method of four-way valve, device and heat pump system and its controller
CN109405329A (en) * 2018-09-04 2019-03-01 珠海格力电器股份有限公司 A kind of heat pump unit control method, device, storage medium and heat pump unit
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CN113685978A (en) * 2021-08-26 2021-11-23 珠海拓芯科技有限公司 Air conditioner control method, air conditioner control device and air conditioner

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