CN110553347A - control method and system for delaying frosting, storage medium and air conditioner - Google Patents

control method and system for delaying frosting, storage medium and air conditioner Download PDF

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Publication number
CN110553347A
CN110553347A CN201910875155.2A CN201910875155A CN110553347A CN 110553347 A CN110553347 A CN 110553347A CN 201910875155 A CN201910875155 A CN 201910875155A CN 110553347 A CN110553347 A CN 110553347A
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China
Prior art keywords
frosting
environment temperature
air conditioner
indoor environment
control process
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CN201910875155.2A
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Chinese (zh)
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CN110553347B (en
Inventor
袁前
孙瑞松
颜景旭
胡洪昊
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Aux Air Conditioning Co Ltd
Ningbo Aux Electric Co Ltd
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Aux Air Conditioning Co Ltd
Ningbo Aux Electric Co Ltd
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Priority to CN201910875155.2A priority Critical patent/CN110553347B/en
Publication of CN110553347A publication Critical patent/CN110553347A/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/41—Defrosting; Preventing freezing
    • F24F11/42—Defrosting; Preventing freezing of outdoor units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—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
    • F24F11/65—Electronic processing for selecting an operating mode
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/79—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling the direction of the supplied air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/88—Electrical aspects, e.g. circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F24F2110/12—Temperature of the outside air
    • 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

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

the invention provides a control method and a system for delaying frosting, a storage medium and an air conditioner, wherein the control method for delaying frosting comprises the following steps: acquiring an ambient temperature parameter and an operation parameter of a compressor in an air-conditioning heating mode; and when the environmental temperature parameter and the operation parameter simultaneously meet the entry condition of starting the delay frosting control, controlling the air conditioner to enter the delay frosting control process. According to the control method for delaying frosting, the ambient temperature parameter and the running parameter of the compressor are detected in real time, the detected data are judged, when the entering condition of starting the control for delaying frosting is met, the air conditioner automatically enters the control process for delaying frosting, the frosting condition of a condenser of the outdoor unit of the air conditioner is delayed, the heating running period of the air conditioner is prolonged, the defrosting times of the outdoor unit are reduced, the fluctuation of indoor temperature caused by the defrosting of the outdoor unit is reduced, and therefore the comfortable experience of users in use is improved under the heating mode.

Description

Control method and system for delaying frosting, storage medium and air conditioner
Technical Field
The invention relates to the technical field of air conditioners, in particular to a control method and system for delaying frosting, a storage medium and an air conditioner.
Background
with the continuous improvement of the living standard of people, the air conditioner is widely applied.
At present, current air conditioner product is under the lower condition of outdoor environment temperature, air conditioning system heats the volume not enough, it is relatively poor to heat the travelling comfort, for promoting air conditioning system's heating volume, adopt the mode that promotes compressor operating frequency to increase the heating volume usually, this mode can promote the heating volume to a certain extent, but also can aggravate the frosting condition of air condensing units condenser, make the quick decay of the heating volume of system, frequently get into the defrosting, lead to indoor temperature fluctuation, influence the travelling comfort effect.
Disclosure of Invention
The invention solves the problem that when the heating capacity is increased by adopting a mode of increasing the running frequency of a compressor in the prior art, the frosting condition of a condenser of an outdoor unit of an air conditioner is aggravated, so that the heating capacity of a system is quickly attenuated, and the defrosting is frequently carried out, so that the indoor temperature is fluctuated, and the comfort effect is influenced.
In order to solve the above problems, the present invention provides a control method for delaying frosting, comprising the following steps:
s100, acquiring an ambient temperature parameter and an operation parameter of a compressor in an air-conditioning heating mode; the environment temperature parameters comprise outdoor environment temperature and indoor environment temperature, and the operation parameters comprise operation frequency and heating accumulated operation time;
And S200, when the environment temperature parameter and the operation parameter simultaneously meet the entry condition of starting the delay frosting control, controlling the air conditioner to enter the delay frosting control process.
Therefore, after the air conditioner is operated for a period of time, the indoor environment temperature can rise to a certain temperature, the environment temperature parameter and the operation parameter of the compressor are detected in real time and judged according to the detected data, when the entry condition of starting the frosting delay control is met, the air conditioner automatically enters the frosting delay control process, the frosting condition of a condenser of the air conditioner outdoor unit is delayed, the heating operation period of the air conditioner is prolonged, the defrosting times of the air conditioner outdoor unit are reduced, the fluctuation of the indoor temperature caused by the defrosting of the air conditioner outdoor unit is also reduced, and the comfort experience of a user in use is improved under the heating mode; moreover, the control method for delaying frosting in the embodiment can be used on a variable frequency air conditioner product, can also be used on a fixed frequency air conditioner product, and has a wide application range.
Optionally, the entry condition comprises a first entry condition and a second entry condition;
The first entry condition includes: the outdoor environment temperature is less than or equal to a preset outer ring temperature, and the indoor environment temperature is greater than or equal to a first preset inner ring temperature;
The second entry condition includes: the operation frequency is less than or equal to the highest frequency corresponding to the outdoor environment temperature, and the heating accumulated operation time is greater than or equal to a first preset time.
Therefore, when the first entering condition and the second entering condition are simultaneously met, the air conditioner can automatically enter the frosting delay control process, if the first entering condition and the second entering condition are not simultaneously met, the air conditioner continues to normally operate and does not enter the frosting delay control process, and therefore the reliability of the frosting delay control process is guaranteed.
optionally, the delay frost control process includes:
Controlling the compressor to reduce the operating frequency to a set target frequency;
And/or controlling the indoor fan to reduce the rotating speed to a set target rotating speed;
And/or controlling the indoor unit to adjust the current swing angle to the set minimum swing angle.
the three kinds of control can be executed independently, can be executed in a combined way in pairs, and can also be executed simultaneously, namely, when the air conditioner enters the frosting delaying control process, one or two or three of the operation frequency of the compressor, the rotating speed of the indoor fan and the swing angle of the indoor unit can be selected according to actual needs to carry out frosting delaying control so as to delay the frosting condition of the condenser of the outdoor unit of the air conditioner.
optionally, the method further comprises the following steps:
S300, acquiring the running time of the air conditioner entering the frosting delay control process;
s400, judging whether the operation time length reaches a second preset time length or not;
S500, if yes, executing the step S600; if not, continuing to maintain the current operation state;
S600, acquiring the indoor environment temperature again;
S700, judging whether the indoor environment temperature acquired again meets the exit condition for exiting the delay frosting control process;
s800, if the current state does not meet the requirement, the current state is kept running for a third preset time, and then the step S600 is skipped; and if so, controlling the air conditioner to exit the frosting delay control process.
Thus, after the air conditioner enters the frosting delay control process, the air conditioner runs for a second preset time period, then starts to detect the indoor environment temperature, judges whether the indoor environment temperature meets the exit condition, automatically exits the frosting delay control process when the air conditioner meets the exit condition, continues to execute the frosting delay control process if the indoor environment temperature does not meet the exit condition, detects the indoor environment temperature again after a third preset time period, judges the indoor environment temperature, and circularly detects and judges the indoor environment temperature; after the air conditioner exits the frosting delay control process, the running frequency of the compressor, the rotating speed of the indoor fan and the air swinging angle of the indoor unit are all restored to the normal running state before entering the frosting delay control process, namely the normal running of the air conditioner is controlled according to the parameters of the normal running state before entering the frosting delay control process.
optionally, the exit condition comprises:
The indoor environment temperature obtained again is less than or equal to a second preset inner ring temperature;
Or the difference value between the indoor environment temperature obtained again and the indoor environment temperature obtained last time is smaller than or equal to the preset temperature difference, and the duration time reaches the fourth preset time length.
In this way, if any one of the exit conditions is detected to be satisfied, the air conditioner can automatically exit the frosting postponing control process, and if neither condition is satisfied, the frosting postponing control process is continuously executed. Therefore, the air conditioner is controlled to exit the delay frosting control by setting a plurality of exit conditions, so that the reliability of the air conditioner in exiting the delay frosting control process is ensured.
in order to solve the above problems, the present invention further provides a frost-retarding control system, comprising:
The system comprises an acquisition unit, a control unit and a control unit, wherein the acquisition unit is used for acquiring an ambient temperature parameter and an operation parameter of a compressor in an air-conditioning heating mode; wherein the ambient temperature parameters include an outdoor ambient temperature and an indoor ambient temperature; the operation parameters comprise operation frequency and heating accumulated operation time;
And the control unit is used for controlling the air conditioner to enter a frosting delay control process when the ambient temperature parameter and the operation parameter simultaneously meet an entering condition.
Optionally, the entry condition comprises a first entry condition and a second entry condition;
the first entry condition includes: the outdoor environment temperature is less than or equal to a preset outer ring temperature, and the indoor environment temperature is greater than or equal to a first preset inner ring temperature;
The second entry condition includes: the operation frequency is less than or equal to the highest frequency corresponding to the outdoor environment temperature, and the heating accumulated operation time is greater than or equal to a first preset time.
Optionally, the delay frost control process includes:
controlling the compressor to reduce the operating frequency to a set target frequency;
And/or controlling the indoor fan to reduce the rotating speed to a set target rotating speed;
And/or controlling the indoor unit to adjust the current swing angle to the set minimum swing angle.
Optionally, a judging unit is also included, and,
the acquisition unit is further configured to: acquiring the running time of the air conditioner entering the frosting delay control process;
The judgment unit is used for: judging whether the operation time length reaches a second preset time length or not;
the control unit is further configured to: if the operation time reaches a second preset time, acquiring the indoor environment temperature again; if the operation time does not reach a second preset time, controlling the air conditioner to continuously keep the current operation state;
the judging unit is further configured to: judging whether the re-acquired indoor environment temperature meets an exit condition for exiting the frosting delay control process;
the control unit is further configured to: if the indoor environment temperature acquired again does not meet the exit condition for exiting the frosting delay control process, keeping the current state for a third preset time period, and then acquiring the indoor environment temperature again; and if the indoor environment temperature acquired again meets the exit condition for exiting the frosting delay control process, controlling the air conditioner to exit the frosting delay control process.
A computer-readable storage medium, which stores a computer program, which when read and executed by a processor, implements the control method for delaying frosting according to any one of the above.
in order to solve the above problem, the present invention further provides an air conditioner, including a computer readable storage medium storing a computer program and a processor, where the computer program is read by the processor and executed to implement the control method for delaying frosting according to any one of the above aspects.
Compared with the prior art, the control system for delaying frosting, the computer readable storage medium and the air conditioner have the same advantages as the control method for delaying frosting, and are not described again.
Drawings
FIG. 1 is a flow chart of a control method for delaying frosting according to an embodiment of the present invention;
FIG. 2 is a flow chart illustrating another aspect of a control method for retarding frost formation according to an embodiment of the present invention;
FIG. 3 is a block diagram of a control system for delaying frosting according to an embodiment of the present invention.
Description of reference numerals:
10-acquisition unit, 20-control unit, 30-judgment unit.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "high", "low", and the like are based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, cannot be construed as limiting the present invention.
And the running frequency of the compressor, the rotating speed of the indoor fan and the air swinging angle of the indoor unit are restored to the running state before entering the frosting delay control process.
Referring to fig. 1, an embodiment of the present invention provides a method for controlling frost delay, including the following steps:
S100, acquiring an ambient temperature parameter and an operating parameter of a compressor in an air-conditioning heating mode; wherein the ambient temperature parameters include outdoor ambient temperature and indoor ambient temperature; the operation parameters comprise operation frequency and heating accumulated operation time;
and S200, controlling the air conditioner to enter a frosting delay control process when the environmental temperature parameter and the operation parameter simultaneously meet the entering condition of starting the frosting delay control.
Since the frosting phenomenon of the outdoor unit is generated when the air conditioner is operated in a heating mode in a cold season, the control method for delaying frosting in the embodiment is performed when the air conditioner is in the heating mode, so that when the air conditioner is turned on, the operation mode of the air conditioner needs to be detected first, and only when the air conditioner is detected to be in the heating mode, the control method in the embodiment is executed.
therefore, after the air conditioner is operated for a period of time, the indoor environment temperature can rise to a certain temperature, the environment temperature parameter and the operation parameter of the compressor are detected in real time and judged according to the detected data, when the entry condition of starting the frosting delay control is met, the air conditioner automatically enters the frosting delay control process, the frosting condition of a condenser of the air conditioner outdoor unit is delayed, the heating operation period of the air conditioner is prolonged, the defrosting times of the air conditioner outdoor unit are reduced, the fluctuation of the indoor temperature caused by the defrosting of the air conditioner outdoor unit is also reduced, and the comfort experience of a user in use is improved under the heating mode; moreover, the control method for delaying frosting in the embodiment can be used on a variable frequency air conditioner product, can also be used on a fixed frequency air conditioner product, and has a wide application range.
Optionally, the entry conditions comprise a first entry condition and a second entry condition;
The first entry condition includes: the outdoor environment temperature is less than or equal to the preset outer ring temperature, and the indoor environment temperature is greater than or equal to the first preset inner ring temperature;
The second entry condition includes: the operation frequency is less than or equal to the highest frequency corresponding to the outdoor environment temperature, and the heating accumulated operation time is greater than or equal to a first preset time.
wherein the outer ring temperature T is presetOutdoor 0first preset inner ring temperature TIndoor 0the maximum frequency F corresponding to the outdoor ambient temperatureMAXand a first preset duration t1all the values are program set values, and the set values are set by designers according to actual needs and have a selection range. For example, the outer loop temperature T is presetoutdoor 0the value range of (A) is-2 deg.C to 2 deg.C, and 2 deg.C is usually selected as the preset outer ring temperature TOutdoor 0And the detected outdoor ambient temperature TOutdoorsComparing the sizes; first preset inner ring temperature TIndoor 0The value range of (A) is 12-18 ℃, and usually 15 ℃ is selected as the first preset inner ring temperature Tindoor 0And the detected indoor ambient temperature Tindoor useComparing the sizes; maximum frequency F of the compressorMAWith outdoor ambient temperature ToutdoorsThe corresponding relation between the two is as follows: when the temperature is less than or equal to-15 ℃ TOutdoorsat < -6 ℃, FMAX89HZ, when T is less than or equal to-6 ℃ ≤outdoorsAt < -1 ℃, FMAXwhen the temperature is less than or equal to minus 1 ℃ and less than or equal to TOutdoorsat < 4 ℃, FMAX84HZ, and T is more than or equal to 4 ℃ ≦ TOutdoorsAt < 8 ℃, FMAX73HZ, and T is more than or equal to 8 ℃ ≦ TOutdoorsAt < 25 ℃, FMAXwith TOutdoorsthe rise of the temperature is decreased linearly, namely from 73HZ to 30HZ when T is equal tooutdoorsAt a temperature of not less than 25 ℃, FMAX30 HZ; according to the corresponding relation, the indoor environment temperature T is selected and detectedIndoor useCorresponding highest frequency FMAXwith the detected operating frequency F of the compressorOperation ofComparing the sizes; a first preset duration t1The value range of (a) is 20min to 30min, and usually 25min is selected as the first preset time t1The value of (a) is compared with the detected cumulative compressor heating operation time t. Judgment ofWhether the condition that the air conditioner can enter the control process of delaying frosting is a plurality of, in this embodiment according to ambient temperature parameter and compressor operating parameter with these a plurality of conditions divide into two types, be first entering condition and second entering condition respectively, when first entering condition and second entering condition satisfy simultaneously, the air conditioner just can automatic entering delay frosting control process, if can not satisfy simultaneously, then the air conditioner continues normal operating, does not enter and delays frosting control process, so in order to guarantee the reliability of delaying frosting control process.
Optionally, the delay frosting control process comprises:
Controlling the compressor to reduce the running frequency to a set target frequency;
and/or controlling the indoor fan to reduce the rotating speed to a set target rotating speed;
And/or controlling the indoor unit to adjust the current swing angle to the set minimum swing angle.
The three kinds of control can be executed independently, can be executed in a combined way in pairs, and can also be executed simultaneously, namely, when the air conditioner enters the frosting delaying control process, one or two or three of the operation frequency of the compressor, the rotating speed of the indoor fan and the swing angle of the indoor unit can be selected according to actual needs to carry out frosting delaying control so as to delay the frosting condition of the condenser of the outdoor unit of the air conditioner. Wherein the target frequency T of the compressorTargetTarget rotating speed R of indoor fanTargetare all programmed values, e.g. target frequency TtargetAnd a target rotational speed RTargetthe target frequency T of the compressor can be set according to the following calculation formulaTarget＝FMAX95% target rotation speed R of indoor fanTarget＝RAt present*90％，Rat presentThe current rotating speed of the indoor fan. In addition, when the rotating speed of the indoor fan is adjusted by using gears, the rotating speed is reduced to the target rotating speed in the control room, and the current rotating speed gear can be reduced by one gear in the direction of reducing the rotating speed through the control room fan. The air swing angles of the indoor unit comprise an up-down air swing angle and a left-right air swing angleWhen the air conditioner enters the frosting delay control process, the current up-down wind swinging angle and the current left-right wind swinging angle of the indoor unit need to be adjusted to the minimum wind swinging angle, wherein the minimum wind swinging angle of the up-down wind swinging angle and the left-right wind swinging angle is set when the air conditioner leaves a factory.
Optionally, with reference to fig. 2, the method for controlling the delay of frost formation further includes the following steps:
Step S300, acquiring the operation time of the air conditioner entering the frosting delay control process;
S400, judging whether the running time reaches a second preset time;
step S500, if yes, executing step S600; if not, continuing to maintain the current operation state;
S600, acquiring the indoor environment temperature again;
Step S700, judging whether the indoor environment temperature acquired again meets the exit condition for exiting the delay frosting control process;
Step S800, if the current state does not meet the requirement, the current state is kept running for a third preset time, and then the step S600 is skipped; and if so, controlling the air conditioner to exit the control process of delaying frosting.
The second preset time period t 2 and the third preset time period t 3 are both program setting values, and are set by a designer according to actual needs, and the setting values all have a selection range, for example, the value range of the second preset time period t 2 is 15min to 25min, 15min is usually selected as the setting value of the second preset time period t 2 and is compared with the detected operation time period of the air conditioner entering the delay frosting control process, the value range of the third preset time period t 3 is 1min to 10min, 1min is usually selected as the setting value of the third preset time period t 3, and the third preset time period t 3 is also a detection period when the condition exits.
Thus, after the air conditioner enters the frosting delay control process, the air conditioner firstly runs for a second preset time period t 2, then detects the indoor environment temperature again, judges whether the detected indoor environment temperature meets the exit condition or not, when the exit condition is detected to be met, the air conditioner automatically exits the frosting delay control process, if not, the frosting delay control process is continuously executed, detects and judges the indoor environment temperature again after a third preset time period t 3, and performs cyclic detection and judgment according to the above steps, after the air conditioner exits the frosting delay control process, the running frequency of the compressor, the rotating speed of the indoor fan and the swinging angle of the indoor unit are all recovered to the normal running state before entering the frosting delay control process, namely, the normal running of the air conditioner is controlled according to the parameters of the normal running state before entering the frosting delay control process.
Optionally, the exit condition comprises:
The indoor environment temperature obtained again is less than or equal to a second preset inner ring temperature;
Or the difference between the indoor environment temperature obtained again and the indoor environment temperature obtained last time is less than or equal to the preset temperature difference, and the duration time reaches a fourth preset duration time.
it should be noted that, when the exit condition is detected for the first time, the indoor environment temperature obtained again refers to the indoor environment temperature detected when the exit condition is detected for the first time, and the indoor environment temperature obtained last time refers to the indoor environment temperature detected in the entry condition; when the exit condition is detected for the second time, the indoor environment temperature obtained again refers to the indoor environment temperature detected when the exit condition is detected for the second time, and the indoor environment temperature obtained last time refers to the indoor environment temperature detected when the exit condition is detected for the first time, and so on, taking the exit condition detected for the second time as an example, when the exit condition is detected for the nth time (n is a positive integer greater than or equal to 2), the indoor environment temperature obtained again refers to the indoor environment temperature detected when the exit condition is detected for the nth time, and the indoor environment temperature obtained last time refers to the indoor environment temperature detected when the exit condition is detected for the n-1 th time. Wherein the second preset inner ring temperature TIndoor 1A preset temperature difference delta T and a fourth preset time T4All the values are program set values, and the set values are set by designers according to actual needs and have a selection range.for example, the second predetermined inner loop temperature Tindoor 1The value range of (A) is 8-12 ℃, and the temperature of 12 ℃ is usually selected as the second preset inner ring temperature TIndoor 1And the outdoor ambient temperature T detected again in step S600outdoorsComparing the sizes; the value range of the preset temperature difference delta T is-2-0 ℃, and the value range of the preset temperature difference delta T is usually selected as a set value of the preset temperature difference delta T and compared with the difference value between the indoor environment temperature detected again and the indoor environment temperature detected last time; a fourth preset duration t4The value range of (a) is 5min to 10min, and usually 5min is selected as the fourth preset time t4and comparing the set value with the duration of time when the difference between the indoor environment temperature detected again and the indoor environment temperature detected last time is less than or equal to the preset temperature difference delta T. If any one of the exiting conditions is detected to be met, the air conditioner can automatically exit the frosting delay control process, and if both the exiting conditions are not met, the frosting delay control process is continuously executed. Therefore, the air conditioner is controlled to exit the delay frosting control by setting a plurality of exit conditions, so that the reliability of the air conditioner in exiting the delay frosting control process is ensured.
The embodiment also provides a computer-readable storage medium, which stores instructions that when loaded and executed by a processor implement the control method for delaying frosting as described in any one of the above.
the technical solution of the embodiment of the present invention substantially or partly contributes to the prior art, or all or part of the technical solution may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) to execute all or part of the steps of the method according to the embodiment of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.
According to the control method for delaying frosting, after the air conditioner is heated to run for a period of time, the indoor environment temperature rises to a certain temperature, at the moment, the environment temperature parameter and the running parameter of the compressor are detected in real time, judgment is carried out according to the detected data, when the entering condition of starting the control for delaying frosting is met, the air conditioner automatically enters the control process for delaying frosting, the frosting condition of a condenser of the outdoor unit of the air conditioner is delayed, the heating running period of the air conditioner is not further prolonged, the defrosting times of the outdoor unit of the air conditioner are reduced, the fluctuation of the indoor temperature caused by the defrosting of the outdoor unit of the air conditioner is also reduced, and therefore the comfort experience of a user in use is improved under the heating mode; moreover, the control method for delaying frosting in the embodiment can be used on a variable frequency air conditioner product, can also be used on a fixed frequency air conditioner product, and has a wide application range.
Referring to fig. 3, the present embodiment further provides a frost-retarding control system, including:
An obtaining unit 10, configured to obtain an ambient temperature parameter and an operation parameter of the compressor in an air conditioning heating mode; wherein the ambient temperature parameters include outdoor ambient temperature and indoor ambient temperature; the operation parameters comprise operation frequency and heating accumulated operation time;
And the control unit 20 is used for controlling the air conditioner to enter a frosting delay control process when the ambient temperature parameter and the operation parameter simultaneously meet the entering condition.
The acquisition unit 10 includes a first temperature sensor and a second temperature sensor, the first temperature sensor is arranged on the outdoor unit and used for detecting the outdoor environment temperature, and the second temperature sensor is arranged on the remote controller and used for detecting the indoor environment temperature; the obtaining unit 10 further includes a first obtaining module for obtaining an operating frequency of the compressor, and a second obtaining module for obtaining a heating accumulated operating time of the compressor.
When the air conditioner is heated and operated for a period of time, the indoor environment temperature rises to a certain temperature, the acquisition unit 10 detects the environment temperature parameter and the operation parameter of the compressor in real time, the detected data are transmitted to the control unit 20 for processing and analysis, and when the environment temperature parameter and the operation parameter simultaneously meet the entry condition of starting the delay frosting control, the control unit 20 controls the air conditioner to enter the delay frosting control process to delay the frosting condition of a condenser of the air conditioner outdoor unit, so that the heating operation period of the air conditioner is prolonged, the defrosting times of the air conditioner outdoor unit are reduced, the fluctuation of the indoor temperature caused by the defrosting of the air conditioner outdoor unit is also reduced, and the comfort experience of a user in use is improved under the heating mode; moreover, the control method for delaying frosting in the embodiment can be used on a variable frequency air conditioner product, can also be used on a fixed frequency air conditioner product, and has a wide application range.
Optionally, the entry conditions comprise a first entry condition and a second entry condition;
The first entry condition includes: the outdoor environment temperature is less than or equal to the preset outer ring temperature, and the indoor environment temperature is greater than or equal to the first preset inner ring temperature;
The second entry condition includes: the operation frequency is not more than the highest frequency corresponding to the outdoor environment temperature, and the heating accumulated operation time is more than or equal to a first preset time length.
Wherein the outer ring temperature T is presetOutdoor 0first preset inner ring temperature TIndoor 0The maximum frequency F corresponding to the outdoor ambient temperatureMAXAnd a first preset duration t1all the values are program set values, and the set values are set by designers according to actual needs and have a selection range. For example, the outer loop temperature T is presetOutdoor 0The value range of (A) is-2 deg.C to 2 deg.C, and 2 deg.C is usually selected as the preset outer ring temperature TOutdoor 0And the detected outdoor ambient temperature TOutdoorsComparing the sizes; first preset inner ring temperature TIndoor 0the value range of (A) is 12-18 ℃, and usually 15 ℃ is selected as the first preset inner ring temperature Tindoor 0And the detected indoor ambient temperature Tindoor useComparing the sizes; maximum frequency F of the compressorMAWith outdoor ambient temperature TOutdoorsthe corresponding relation between the two is as follows: when the temperature is less than or equal to-15 ℃ TOutdoorsAt < -6 ℃, FMAX89HZ, when T is less than or equal to-6 ℃ ≤Outdoorsat < -1 ℃, FMAXWhen the temperature is less than or equal to minus 1 ℃ and less than or equal to Toutdoorsat < 4 ℃, FMAX84HZ, and T is more than or equal to 4 ℃ ≦ ToutdoorsAt < 8 ℃, FMAX73HZ, and T is more than or equal to 8 ℃ ≦ TOutdoorsAt < 25 ℃, FMAXwith TOutdoorsThe rise of the temperature is decreased linearly, namely from 73HZ to 30HZ when T is equal toOutdoorsAt a temperature of not less than 25 ℃, FMAX30 HZ; according to the corresponding relation, the indoor environment temperature T is selected and detectedindoor useCorresponding highest frequency FMAXwith the detected operating frequency F of the compressoroperation ofComparing the sizes; a first preset duration t1The value range of (a) is 20min to 30min, and usually 25min is selected as the first preset time t1The value of (a) is compared with the detected heating accumulated operation time t of the compressor. The condition that whether the air conditioner can enter the control process of delaying frosting is judged to be multiple, the multiple conditions are divided into two types according to the ambient temperature parameter and the compressor operation parameter in the embodiment, the multiple conditions are respectively a first entering condition and a second entering condition, when the first entering condition and the second entering condition are met simultaneously, the air conditioner can automatically enter the control process of delaying frosting, if the first entering condition and the second entering condition are not met simultaneously, the air conditioner continues to normally operate, the control process of delaying frosting is not entered, and therefore the reliability of the control process of delaying frosting is guaranteed.
optionally, the delay frosting control process comprises:
controlling the compressor to reduce the running frequency to a set target frequency;
And/or controlling the indoor fan to reduce the rotating speed to a set target rotating speed;
And/or controlling the indoor unit to adjust the current swing angle to the set minimum swing angle.
The three types of control can be executed independently, in combination with each other, or simultaneously, that is, when the air conditioner enters the process of the frost-formation delaying control, the control unit 20 can select one, two or three of the operation frequency of the compressor, the rotating speed of the indoor fan and the swing angle of the indoor unit to perform the frost-formation delaying control so as to delay the frost-formation condition of the condenser of the outdoor unit of the air conditioner. Wherein the target frequency T of the compressorTargetTarget rotating speed R of indoor fantargetAre all programmed values, e.g. target frequency TtargetAnd a target rotational speed RTargetThe target frequency T of the compressor can be set according to the following calculation formulaTarget＝FMAX95% target rotation speed R of indoor fanTarget＝RAt present*90％，RAt presentThe current rotating speed of the indoor fan. In addition, when the rotating speed of the indoor fan is adjusted by using gears, the rotating speed is reduced to the target rotating speed in the control room, and the current rotating speed gear can be reduced by one gear in the direction of reducing the rotating speed through the control room fan. The air swinging angle of the indoor unit comprises an up-down air swinging angle and a left-right air swinging angle, when the air conditioner enters a frosting delaying control process, the current up-down air swinging angle and the current left-right air swinging angle of the indoor unit need to be adjusted to the minimum air swinging angle, wherein the minimum air swinging angle of the up-down air swinging angle and the minimum air swinging angle of the left-right air swinging angle are set when the air conditioner leaves a factory.
Optionally, the control system for delaying frost formation further comprises a judging unit 30, and,
the acquisition unit 10 is further configured to: acquiring the running time of the air conditioner entering the frosting delay control process;
The determination unit 30 is configured to: judging whether the operation time length reaches a second preset time length or not;
The control unit 20 is further configured to: if the operation time reaches a second preset time, acquiring the indoor environment temperature again; if the operation time does not reach the second preset time, controlling the air conditioner to continuously keep the current operation state;
The determination unit 30 is further configured to: judging whether the re-acquired indoor environment temperature meets an exit condition for exiting the delayed frosting control process;
The control unit 20 is further configured to: if the re-acquired indoor environment temperature does not meet the exit condition for exiting the delayed frosting control process, the current state is kept running for a third preset time, and then the indoor environment temperature is re-acquired; and if the indoor environment temperature acquired again meets the exit condition of exiting the delayed frosting control process, controlling the air conditioner to exit the delayed frosting control process.
the second preset time period t 2 and the third preset time period t 3 are both program setting values, and are set by a designer according to actual needs, and the setting values all have a selection range, for example, the value range of the second preset time period t 2 is 15min to 25min, 15min is usually selected as the setting value of the second preset time period t 2 and is compared with the detected operation time period of the air conditioner entering the delay frosting control process, the value range of the third preset time period t 3 is 1min to 10min, 1min is usually selected as the setting value of the third preset time period t 3, and the third preset time period t 3 is also a detection period when the condition exits.
Thus, after the air conditioner enters the frosting delay control process, the air conditioner firstly runs for a second preset time period t 2, then starts to detect the indoor environment temperature, judges whether the indoor environment temperature meets the exit condition, automatically exits the frosting delay control process when the air conditioner is detected to meet the exit condition, if not, continues to execute the frosting delay control process, detects and judges the indoor environment temperature again after a third preset time period t 3, and circularly detects and judges according to the above steps, after the air conditioner exits the frosting delay control process, the running frequency of the compressor, the rotating speed of the indoor fan and the swinging angle of the indoor unit are all restored to the normal running state before entering the frosting delay control process, namely the normal running of the air conditioner is controlled according to the parameters of the normal running state before entering the frosting delay control process.
Optionally, the exit condition comprises:
The indoor environment temperature obtained again is less than or equal to a second preset inner ring temperature;
Or the difference between the indoor environment temperature obtained again and the indoor environment temperature obtained last time is less than or equal to the preset temperature difference, and the duration time reaches a fourth preset duration time.
It should be noted that, when the exit condition is detected for the first time, the indoor environment temperature acquired again refers to the indoor environment detected when the exit condition is detected for the first timeThe temperature of the indoor environment obtained last time refers to the indoor environment temperature detected in the entering condition; when the exit condition is detected for the second time, the indoor environment temperature obtained again refers to the indoor environment temperature detected when the exit condition is detected for the second time, and the indoor environment temperature obtained last time refers to the indoor environment temperature detected when the exit condition is detected for the first time, and so on, taking the exit condition detected for the second time as an example, when the exit condition is detected for the nth time (n is a positive integer greater than or equal to 2), the indoor environment temperature obtained again refers to the indoor environment temperature detected when the exit condition is detected for the nth time, and the indoor environment temperature obtained last time refers to the indoor environment temperature detected when the exit condition is detected for the n-1 th time. Wherein the second preset inner ring temperature TIndoor 1A preset temperature difference delta T and a fourth preset time T4All the values are program set values, and the set values are set by designers according to actual needs and have a selection range. For example, the second predetermined inner loop temperature TIndoor 1The value range of (A) is 8-12 ℃, and the temperature of 12 ℃ is usually selected as the second preset inner ring temperature TIndoor 1and the outdoor ambient temperature T detected in step S700OutdoorsComparing the sizes; the value range of the preset temperature difference delta T is-2-0 ℃, and the value range of the preset temperature difference delta T is usually selected as a set value of the preset temperature difference delta T and compared with the difference value between the currently detected indoor environment temperature and the last detected indoor environment temperature; a fourth preset duration t4The value range of (a) is 5min to 10min, and usually 5min is selected as the fourth preset time t4The set value of (a) is compared with the duration time when the difference between the currently detected indoor environment temperature and the last detected indoor environment temperature is not more than the preset temperature difference delta T. If any one of the exiting conditions is detected to be met, the frost-formation-delaying control process can be automatically exited, and if the condition is not met, the frost-formation-delaying control process is continuously executed. Therefore, the air conditioner is controlled to exit the delay frosting control by setting a plurality of exit conditions, so that the reliability of the air conditioner in exiting the delay frosting control process is ensured.
The present embodiment also provides an air conditioner, which includes a computer readable storage medium storing a computer program and a processor, wherein the computer program is read by the processor and executed to implement the control method for delaying frosting according to any one of the above.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (12)

1. A method for controlling the delay of frost formation, comprising the steps of:
S100, acquiring an ambient temperature parameter and an operation parameter of a compressor in an air-conditioning heating mode; the environment temperature parameters comprise outdoor environment temperature and indoor environment temperature, and the operation parameters comprise operation frequency and heating accumulated operation time;
And S200, when the environment temperature parameter and the operation parameter simultaneously meet the entry condition of starting the delay frosting control, controlling the air conditioner to enter the delay frosting control process.
2. The frost delay control method of claim 1, wherein the entry conditions include a first entry condition and a second entry condition;
The first entry condition includes: the outdoor environment temperature is less than or equal to a preset outer ring temperature, and the indoor environment temperature is greater than or equal to a first preset inner ring temperature;
The second entry condition includes: the operation frequency is less than or equal to the highest frequency corresponding to the outdoor environment temperature, and the heating accumulated operation time is greater than or equal to a first preset time.
3. The frost delay control method of claim 1, wherein the frost delay control process comprises:
Controlling the compressor to reduce the operating frequency to a set target frequency;
And/or controlling the indoor fan to reduce the rotating speed to a set target rotating speed;
And/or controlling the indoor unit to adjust the current swing angle to the set minimum swing angle.
4. The frost delay control method of claim 1, further comprising the steps of:
S300, acquiring the running time of the air conditioner entering the frosting delay control process;
S400, judging whether the operation time length reaches a second preset time length or not;
s500, if yes, executing the step S600; if not, continuing to maintain the current operation state;
S600, acquiring the indoor environment temperature again;
S700, judging whether the indoor environment temperature acquired again meets the exit condition for exiting the delay frosting control process;
S800, if the current state does not meet the requirement, the current state is kept running for a third preset time, and then the step S600 is skipped; and if so, controlling the air conditioner to exit the frosting delay control process.
5. The frost delay control method of claim 4, wherein the exit condition comprises:
the indoor environment temperature obtained again is less than or equal to a second preset inner ring temperature;
or the difference value between the indoor environment temperature obtained again and the indoor environment temperature obtained last time is smaller than or equal to the preset temperature difference, and the duration time reaches the fourth preset time length.
6. a frost retarding control system, comprising:
An acquisition unit (10) for acquiring an ambient temperature parameter and an operating parameter of the compressor in an air conditioning and heating mode; wherein the ambient temperature parameters include an outdoor ambient temperature and an indoor ambient temperature; the operation parameters comprise operation frequency and heating accumulated operation time;
a control unit (20) for controlling the air conditioner to enter a delayed frosting control process when the ambient temperature parameter and the operation parameter simultaneously satisfy an entry condition.
7. The frost delay control system of claim 6, wherein the entry condition comprises a first entry condition and a second entry condition;
The first entry condition includes: the outdoor environment temperature is less than or equal to a preset outer ring temperature, and the indoor environment temperature is greater than or equal to a first preset inner ring temperature;
the second entry condition includes: the operation frequency is less than or equal to the highest frequency corresponding to the outdoor environment temperature, and the heating accumulated operation time is greater than or equal to a first preset time.
8. the frost delay control system of claim 6, wherein the frost delay control process comprises:
controlling the compressor to reduce the operating frequency to a set target frequency;
And/or controlling the indoor fan to reduce the rotating speed to a set target rotating speed;
And/or controlling the indoor unit to adjust the current swing angle to the set minimum swing angle.
9. the frost delay control system of claim 6, further comprising a determining unit (530), and,
The acquisition unit (10) is further configured to: acquiring the running time of the air conditioner entering the frosting delay control process;
The determination unit (30) is configured to: judging whether the operation time length reaches a second preset time length or not;
The control unit (20) is further configured to: if the operation time reaches a second preset time, acquiring the indoor environment temperature again; if the operation time does not reach a second preset time, controlling the air conditioner to continuously keep the current operation state;
The determination unit (30) is further configured to: judging whether the re-acquired indoor environment temperature meets an exit condition for exiting the frosting delay control process;
The control unit (20) is further configured to: if the indoor environment temperature acquired again does not meet the exit condition for exiting the frosting delay control process, keeping the current state for a third preset time period, and then acquiring the indoor environment temperature again; and if the indoor environment temperature acquired again meets the exit condition for exiting the frosting delay control process, controlling the air conditioner to exit the frosting delay control process.
10. The frost delay control system of claim 9, wherein the exit condition comprises:
The indoor environment temperature obtained again is less than or equal to a second preset inner ring temperature;
Or the difference value between the indoor environment temperature obtained again and the indoor environment temperature obtained last time is smaller than or equal to the preset temperature difference, and the duration time reaches the fourth preset time length.
11. A computer-readable storage medium, characterized in that it stores a computer program which, when read and executed by a processor, implements the control method for delaying frosting according to any of claims 1-5.
12. an air conditioner comprising a computer-readable storage medium storing a computer program and a processor, wherein the computer program is read by the processor and executed to implement the frost delay control method according to any one of claims 1 to 5.
CN201910875155.2A 2019-09-17 2019-09-17 Control method and system for delaying frosting, storage medium and air conditioner Active CN110553347B (en)

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