CN111189104A - Air conditioner and high-temperature protection control method thereof - Google Patents

Air conditioner and high-temperature protection control method thereof Download PDF

Info

Publication number
CN111189104A
CN111189104A CN202010019890.6A CN202010019890A CN111189104A CN 111189104 A CN111189104 A CN 111189104A CN 202010019890 A CN202010019890 A CN 202010019890A CN 111189104 A CN111189104 A CN 111189104A
Authority
CN
China
Prior art keywords
temperature
outdoor
air conditioner
value
temperature protection
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010019890.6A
Other languages
Chinese (zh)
Inventor
刘新华
余祥云
张健能
吕根贵
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hisense Guangdong Air Conditioning Co Ltd
Original Assignee
Hisense Guangdong Air Conditioning Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hisense Guangdong Air Conditioning Co Ltd filed Critical Hisense Guangdong Air Conditioning Co Ltd
Priority to CN202010019890.6A priority Critical patent/CN111189104A/en
Publication of CN111189104A publication Critical patent/CN111189104A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0003—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station characterised by a split arrangement, wherein parts of the air-conditioning system, e.g. evaporator and condenser, are in separately located 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
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/32—Responding to malfunctions or emergencies
    • 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
    • F24F11/80—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
    • F24F11/70—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
    • F24F11/87—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units
    • F24F11/871—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units by controlling outdoor fans
    • 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
    • F24F2110/12—Temperature of the outside air

Landscapes

  • 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)
  • Air Conditioning Control Device (AREA)

Abstract

The invention discloses an air conditioner and a high-temperature protection control method thereof, wherein the air conditioner comprises a controller, a high-temperature protection module and a control module, wherein the controller is used for obtaining an outdoor loop temperature value according to outdoor loop temperature data, and controlling the air conditioner to enter a high-temperature protection mode when the outdoor loop temperature value meets a preset high-temperature protection condition; after controlling the air conditioner to enter a high-temperature protection mode, judging whether the outdoor ambient temperature value is less than or equal to a restart temperature set value; wherein the restart temperature set value is less than the high temperature protection temperature set value; when the outdoor ambient temperature value is less than or equal to the restart temperature set value, controlling the air conditioner to exit the high-temperature protection mode; and when the outdoor temperature value is greater than the restart temperature set value, controlling the air conditioner to keep operating the high-temperature protection mode. The invention can reduce the influence of the error between the outdoor environment temperature detection value and the actual environment temperature, optimize the control logic of high-temperature starting, and improve the quality of products and the user experience.

Description

Air conditioner and high-temperature protection control method thereof
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioner and a high-temperature protection control method thereof.
Background
Inverter air conditioners are generally designed to normally operate below an outdoor ambient temperature of 46 c, and when an outdoor ambient temperature above 46 c is detected, it is necessary to shut down the air conditioner to prevent damage to the air conditioner. When the outdoor unit of the inverter air conditioner is shut down, because the heat of the condenser or the inverter controller depends on natural heat dissipation, and the heat is difficult to dissipate at high temperature, the temperature sensor of the outdoor unit can be radiated by the heat of the condenser or the heat of the controller, so that the detected outdoor environment temperature value is higher, then when the outdoor environment temperature value exceeds the air conditioner protection set temperature of the controller, the misjudgment of the inverter controller can be caused, so that the air conditioner is protected and cannot be restarted, even if the air conditioner is restarted, a long time interval is needed, for the phenomenon, a consumer can easily consider that the air conditioner is in fault and complain, and therefore, the control logic of the existing inverter air conditioner about high-temperature starting has certain influence on the product quality and the comfort.
Disclosure of Invention
The invention provides an air conditioner and a high-temperature protection control method thereof, which are used for solving the technical problem that the conventional variable frequency air conditioner cannot be restarted due to misjudgment caused by a high outdoor environment temperature detection value.
In order to solve the above technical problem, an embodiment of the present invention provides an air conditioner, including:
an indoor unit;
the outdoor unit comprises a compressor and an outdoor fan;
a controller that controls at least the compressor and the outdoor fan;
the outdoor temperature sensor is used for detecting the outdoor environment temperature and is electrically connected with the controller;
the controller is configured to:
receiving temperature data of the outdoor temperature sensor, and controlling the air conditioner to enter a high-temperature protection mode when an outdoor ambient temperature value meets a preset high-temperature protection condition;
after controlling the air conditioner to enter a high-temperature protection mode, judging whether the outdoor temperature value is less than or equal to a restart temperature set value, wherein the restart temperature set value is less than a high-temperature protection temperature set value;
when the outdoor ambient temperature value is less than or equal to the restart temperature set value, controlling the air conditioner to exit the high-temperature protection mode;
and when the outdoor temperature value is greater than the restart temperature set value, controlling the air conditioner to keep operating the high-temperature protection mode.
In one embodiment, the controller is further configured to:
after the air conditioner is controlled to enter a high-temperature protection mode, when the outdoor environment temperature value is larger than the high-temperature protection set value, the outdoor fan is controlled to continuously operate for a first fan heat dissipation time;
if the outdoor environment temperature value is less than or equal to the restart temperature set value within the heat dissipation time of the first fan continuously operated by the outdoor fan, controlling the air conditioner to exit the high-temperature protection mode;
and after the outdoor fan continuously operates for the first fan heat dissipation time, if the outdoor environment temperature value is greater than the restart temperature set value, controlling the outdoor fan to stop operating.
In one embodiment, the controller is further configured to:
when the controller receives a shutdown signal before receiving the temperature data of the outdoor temperature sensor, the controller controls the outdoor fan to stop running after controlling the air conditioner to exit the high-temperature protection mode.
In one embodiment, the controller is further configured to:
and when the controller receives a starting signal before receiving the temperature data of the outdoor temperature sensor, the controller controls the air conditioner to start after controlling the air conditioner to exit the high-temperature protection mode.
In one embodiment, the controller is further configured to:
and after controlling the outdoor fan to stop running, controlling the air conditioner to start when the running stop time of the outdoor fan reaches the heat dissipation time of a second fan.
In one embodiment, the preset high-temperature protection condition is as follows: and the outdoor environment temperature value is greater than or equal to the high-temperature protection temperature set value.
In one embodiment, the controller is further configured to:
when the controller receives the temperature data of the outdoor temperature sensor, the compressor is in an operation state, and the controller controls the compressor and the outdoor fan to operate after the air conditioner exits the high-temperature protection mode.
In one embodiment, the preset high-temperature protection condition is as follows: and the outdoor environment temperature value is greater than the high-temperature protection temperature set value in a first duration time.
The embodiment of the invention also provides a high-temperature protection control method of the air conditioner, which comprises the following steps:
receiving temperature data of the outdoor temperature sensor, and controlling the air conditioner to enter a high-temperature protection mode when an outdoor ambient temperature value meets a preset high-temperature protection condition;
after controlling the air conditioner to enter a high-temperature protection mode, judging whether the outdoor temperature value is less than or equal to a restart temperature set value, wherein the restart temperature set value is less than a high-temperature protection temperature set value;
when the outdoor ambient temperature value is less than or equal to the restart temperature set value, controlling the air conditioner to exit the high-temperature protection mode;
and when the outdoor temperature value is greater than the restart temperature set value, controlling the air conditioner to keep operating the high-temperature protection mode.
In one embodiment, the method further comprises:
after the air conditioner is controlled to enter a high-temperature protection mode, when the outdoor environment temperature value is larger than the high-temperature protection set value, the outdoor fan is controlled to continuously operate for a first fan heat dissipation time;
if the outdoor environment temperature value is less than or equal to the restart temperature set value within the heat dissipation time of the first fan continuously operated by the outdoor fan, controlling the air conditioner to exit the high-temperature protection mode;
and after the outdoor fan continuously operates for the first fan heat dissipation time, if the outdoor environment temperature value is greater than the restart temperature set value, controlling the outdoor fan to stop operating.
In one embodiment, the method further comprises:
when the controller receives a shutdown signal before receiving the temperature data of the outdoor temperature sensor, the controller controls the outdoor fan to stop running after controlling the air conditioner to exit the high-temperature protection mode.
In one embodiment, the method further comprises:
and when the controller receives a starting signal before receiving the temperature data of the outdoor temperature sensor, the controller controls the air conditioner to start after controlling the air conditioner to exit the high-temperature protection mode.
In one embodiment, the method further comprises:
and after the outdoor fan is controlled to stop running, when the running stop time of the outdoor fan reaches the second fan heat dissipation time, controlling the air conditioner to start.
In one embodiment, the preset high-temperature protection condition is as follows: and the outdoor environment temperature value is greater than or equal to the high-temperature protection temperature set value.
In one embodiment, the method further comprises:
when the controller receives the temperature data of the outdoor temperature sensor and the compressor is in the running state, the controller controls the compressor and the outdoor fan to run after controlling the air conditioner to exit the high-temperature protection mode.
In one embodiment, the preset high-temperature protection condition is as follows: and the outdoor environment temperature value is greater than the high-temperature protection temperature set value in a first duration time.
To sum up, the embodiment of the present invention provides an air conditioner and a high temperature protection control method for the air conditioner, and compared with the prior art, the present embodiment has the beneficial effects that after a high temperature protection mode is started, the restart of the compressor is logically determined by the restart temperature set value, and a proper high temperature protection temperature set value is redefined, instead of the prior art that the compressor can only be restarted when the outdoor ambient temperature value is lower than 46 ℃.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of an air conditioner provided by the present invention;
FIG. 2 is a schematic flow chart of an embodiment of an air conditioner provided by the present invention;
FIG. 3 is a schematic flow chart of an embodiment of an air conditioner provided by the present invention;
FIG. 4 is a schematic flow chart of an embodiment of an air conditioner provided by the present invention;
FIG. 5 is a flowchart of an embodiment of a high temperature protection control method of an air conditioner according to the present invention;
FIG. 6 is a flow chart of an embodiment of a high temperature protection control method of an air conditioner according to the present invention;
wherein, the reference numbers in the drawings of the specification are as follows;
1. a controller; 2. an indoor unit; 3. an outdoor unit; 4. an outdoor temperature sensor.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an embodiment of an air conditioner according to the present invention.
An air conditioner comprising: an indoor unit 2; the outdoor unit 3, the outdoor unit 3 includes a compressor and an outdoor fan;
a controller 1, the controller 1 at least controlling the compressor and the outdoor fan;
and the outdoor temperature sensor 4 is used for detecting the outdoor environment temperature, and the outdoor temperature sensor 4 is electrically connected with the controller 1.
In order to facilitate the understanding of the solution of the invention by those skilled in the art, some terms are described below:
the indoor Unit 2 mainly includes an indoor fan, an indoor heat exchanger, an indoor temperature sensor, etc., the outdoor Unit 3 mainly includes a compressor, an outdoor fan, an outdoor heat exchanger, etc., in general structure, the outdoor temperature sensor 4 is installed on the casing of the outdoor Unit, the controller 1 is installed in the casing of the indoor Unit, and is controlled by a Micro Control Unit (MCU), also known as a Single Chip Microcomputer (Single Chip Microcomputer) or a Single Chip integrated circuit, so as to realize the Control of the air conditioner and Control the air conditioner to operate a heating mode, a cooling mode, a defrosting mode, a high temperature protection mode, etc., in response to a function instruction sent by a user.
In the present embodiment, the controller 1 of the air conditioner is configured to:
receiving the temperature data of the outdoor temperature sensor 4 when the outdoor environment temperature value T iscWhen the preset high-temperature protection condition is met, controlling the air conditioner to enter a high-temperature protection mode;
after the air conditioner is controlled to enter a high-temperature protection mode, the outdoor loop temperature value T is judgedcWhether less than or equal to a restart temperature set value TIs provided with-TTemperature differenceWherein the restart temperature set value TIs provided with-TTemperature differenceLess than the high temperature protection temperature set value;
when the outdoor ring temperature value TcLess than or equal to the restart temperature set value TIs provided with-TTemperature differenceWhen the air conditioner is in the high-temperature protection mode, the air conditioner is controlled to exit the high-temperature protection mode;
when the outdoor ring temperature value TcGreater than the restart temperature setpoint TIs provided with-TTemperature differenceAnd controlling the air conditioner to keep running in a high-temperature protection mode.
In this embodiment, when the air conditioner operates in the high temperature protection mode, the indoor unit is in an off state, the compressor is in an off state, and the outdoor fan is in an operating state, so as to dissipate heat of the outdoor unit in an air cooling manner. In one possible design, when the outdoor temperature T is determinedcIs more than or equal to the high-temperature protection temperature set value TIs provided withWhen the air conditioner is in the high-temperature protection mode, the controller 1 controls the air conditioner to enter the high-temperature protection mode, at the moment, an indoor unit of the air conditioner is in a shutdown state, a compressor is in a shutdown state, an outdoor fan is in an operation state, the compressor is stopped, and the fan is kept to operate continuously, so that the condenser is blown away quickly to dissipate heat orThe radiation of the controller heat dissipation enables the outdoor loop temperature value TcApproximately equal to the actual value T of the outdoor environment temperatureRing (C)。
Referring to fig. 2 to 4, based on the above-mentioned scheme, further optimization is performed, when the operation time of the outdoor fan reaches a certain value, if the outdoor temperature T reaches a certain value, the outdoor temperature T is setcWhen the air conditioner is still higher, the outdoor fan needs to be controlled to stop running, and the air conditioner is stopped under three conditions according to the conventional running condition of the air conditioner:
when the air conditioner is shut down, the air conditioner is controlled to be directly closed, and the outdoor fan stops running at the moment;
when the outdoor unit is started, the outdoor unit is controlled to stop, and the outdoor fan stops running at the moment;
and when the outdoor fan runs, the outdoor fan is also controlled to stop running.
Based on this, the controller 1, is further configured to:
after the air conditioner is controlled to enter the high-temperature protection mode, the outdoor temperature value T is obtainedcWhen the temperature is higher than the high-temperature protection set value, the outdoor fan is controlled to continuously operate for the first fan heat dissipation time t1；
Continuously operating the outdoor fan for the first fan heat dissipation time t1If the indoor and outdoor ring temperature value TcLess than or equal to the restart temperature set value TIs provided with-TTemperature differenceControlling the air conditioner to exit the high-temperature protection mode;
continuously operating the outdoor fan for the first fan heat dissipation time t1Then, if the outdoor ring temperature value TcGreater than the restart temperature setpoint TIs provided with-TTemperature differenceAnd controlling the outdoor fan to stop running.
When the air conditioner receives a shutdown signal, the air conditioner exits the high-temperature protection mode, namely the air conditioner is turned off, and at the moment, the compressor, the outdoor fan and the indoor unit need to be controlled to stop running. Based on this, the controller 1, is further configured to:
when the controller receives a shutdown signal before receiving the temperature data of the outdoor temperature sensor 4, the controller controls the outdoor fan to stop running after controlling the air conditioner to exit the high-temperature protection mode.
For example, referring to fig. 2, fig. 2 is a control logic diagram for exiting the high temperature protection mode when the air conditioner receives a shutdown signal, and the following is described in detail:
when the air conditioner receives a shutdown instruction, the air conditioner operates and stops, and the controller 1 judges that: outdoor ring temperature value TcGreater than the restart temperature setpoint TIs provided with-TTemperature differenceAt this time, will be-TTemperature differenceSet to T, i.e. judge: t isc-TIs provided with> T (adjusting T according to product design scheme)Is provided with、T)；
When T isc-TIs provided withWhen the temperature is higher than T, the controller 1 controls the outdoor fan to continue to operate after the compressor stops operating until Tc-TIs provided withT or less or the outdoor fan is operated for the maximum time T1(t1The heat dissipation time of the first fan is set according to the product design and can be set to be 3min) so as to quickly blow away the radiation of the heat dissipation of the condenser or the heat dissipation of the controller, and the outdoor loop temperature value T is enabledcApproximately equal to the actual value T of the outdoor environment temperatureRing (C). Based on this, the controller 1, receiving the shutdown signal before receiving the temperature data of the outdoor temperature sensor 4, is further configured to:
(1) after the air conditioner is controlled to enter a high-temperature protection mode, the compressor is controlled to stop, the outdoor fan is controlled to continue to operate, and the outdoor loop temperature value T is judgedcWhether it is greater than the set high-temperature protection temperature value TIs provided withThe sum of the first temperature difference T, i.e. the judgment Tc-TIs provided withIf T is greater than Tc-TIs provided withIf the temperature is more than T, the outdoor unit is radiated and cooled, and the outdoor fan is controlled to stop running after the air conditioner is controlled to exit the high-temperature protection mode. Or the like, or, alternatively,
(2) after the air conditioner is controlled to enter a high-temperature protection mode, the compressor is controlled to stop, and the outdoor fan is controlled to continue to operate;
when the operation time of the high temperature protection mode reaches t1And (3min), the default outdoor unit is cooled, and the outdoor fan is controlled to stop running after the air conditioner is controlled to exit the high-temperature protection mode. Wherein, it can be understood that the preset high-temperature protection conditions are as follows: outdoor ring temperature value TcAt a high temperature protection temperature or higherThe set value, and as shown in FIG. 2, can be designed to be-T according to the product designTemperature differenceEqual to T equal to-1.
In one design of the present invention, after the air conditioner receives the power-on signal, the air conditioner exits the high-temperature protection mode, that is, the air conditioner is normally started, and at this time, the compressor and the indoor unit need to be controlled to start and operate.
Based on this, the controller 1, is further configured to:
when the controller receives the starting signal before receiving the temperature data of the outdoor temperature sensor 4, the controller controls the air conditioner to start after controlling the air conditioner to exit the high-temperature protection mode.
Further, when the outdoor fan blows for a period of time, if the outdoor loop temperature value T iscWhen still relatively high, the air conditioner is restarted after a period of shutdown, and thus the controller 1 is also configured to:
after the outdoor fan is controlled to stop running, when the stop running time of the outdoor fan reaches the second fan heat dissipation time t2And when the air conditioner is started, controlling the air conditioner to start.
As a further step, in order to rationalize the design, the preset high-temperature protection conditions are: outdoor ring temperature value TcIs more than or equal to the high temperature protection temperature set value.
Based on this, please refer to fig. 3, fig. 3 is a control logic diagram of the air conditioner exiting the high temperature protection mode when receiving the power-on signal. By TTemperature differenceFor example, before restarting the compressor, the temperature value T of the outdoor loop needs to be based oncFurther judge whether can restart the compressor:
step one, judging: t isc＜TIs provided with；
When T isc＜TIs provided withWhen the compressor is started, the high-temperature protection mode can be exited, and the compressor is started according to the normal operation mode;
when T isc＞TIs provided withWhen the temperature of the outdoor fan is higher than the preset temperature, controlling the compressor to be temporarily not started, and only operating the outdoor fan to continuously cool;
based on the first step, the controller 1 is further configured to:
in the control airAfter the regulator enters a high-temperature protection mode, when the temperature value T of the outdoor ringcGreater than the high temperature protection temperature set value TIs provided withIn time, the outdoor fan is controlled to continuously operate for the first fan heat dissipation time t1(3min)。
The second step, as shown in fig. 3 and 4, judges: t isc＜TIs provided with-1；
At the first fan heat dissipation time t1If in Tc＜TIs provided with1, exiting the high-temperature protection mode and starting the compressor according to a normal operation mode;
at the first fan heat dissipation time t1If in Tc＞TIs provided with1, when the first fan heat dissipation time t is exceeded1(3min) after the outdoor temperature is too high, a protection fault of the outdoor environment temperature is reported, starting is not allowed, the outdoor environment temperature is too high, and the outdoor unit is stopped for the second fan heat dissipation time t2After (2min) the control scheme was cleared and continued to run.
Referring to fig. 4, fig. 4 is a control logic diagram of the air conditioner in an operation state.
In one of the designs of the present invention, when the controller 1 is in the operating state before receiving the temperature data of the outdoor temperature sensor 4, the controller 1 is further configured to:
and after the air conditioner is controlled to exit the high-temperature protection mode, controlling the compressor and the outdoor fan to operate.
As a further step, in order to rationalize the design, the preset high-temperature protection conditions are: an outer temperature value T of the chamber within a first time periodcIs greater than the high temperature protection temperature set value.
Based on the conditions set as described above,
in the operation process of the compressor, whether the air conditioner meets the condition of high-temperature protection needs to be judged. In this regard, as shown in fig. 4, the decision logic has at least the following two designs:
first, determine Tc≥TIs provided with；
If Tc≥TIs provided withIf the outdoor environment temperature is too high, the air conditioner is controlled to enter a high-temperature protection mode, and the compressor is stoppedThe outdoor fan continues to operate; up to Tc-TIs provided withT or less or the outdoor fan is operated for the maximum time T1(t1The heat dissipation time of the first fan is set according to the product design and can be set to be 3min) so as to quickly blow away the radiation of the heat dissipation of the condenser or the heat dissipation of the controller, and the outdoor loop temperature value T is enabledcApproximately equal to the actual value T of the outdoor environment temperatureRing (C)。
Based on this, the controller 1, is further configured to:
before controlling the air conditioner to enter a high-temperature protection mode, judging the outdoor loop temperature value TcWhether a preset high-temperature protection condition is met or not;
when the outdoor ring temperature value TcIs more than or equal to the high-temperature protection temperature set value TIs provided withAnd judging that the preset high-temperature protection condition is met, and controlling the air conditioner to enter a high-temperature protection mode.
Second, it is preferable to judge the first duration period t3Inner Tc＞TIs provided with；
If in a continuous first time period t3Inner Tc＞TIs provided withIf the outdoor fan is in the high-temperature protection mode, the air conditioner is controlled to enter the high-temperature protection mode, the compressor stops running, and the outdoor fan continues running; up to Tc-TIs provided withT or less or the outdoor fan is operated for the maximum time T3(t3For the first duration, set according to product design, and can be set for 3min) to quickly blow away the radiation radiated by the condenser or the controller, so as to make the outdoor loop temperature value TcApproximately equal to the actual value T of the outdoor environment temperatureRing (C)。
Referring to fig. 5, an embodiment of the present invention further provides a high temperature protection control method for an air conditioner, including the following steps:
s101, receiving temperature data of the outdoor temperature sensor 4, and obtaining an outdoor environment temperature value TcWhen the preset high-temperature protection condition is met, controlling the air conditioner to enter a high-temperature protection mode;
s102, after the air conditioner is controlled to enter a high-temperature protection mode, judging an outdoor loop temperature value TcWhether or not less thanEqual to the restart temperature setpoint TIs provided with-TTemperature differenceWherein the restart temperature set value TIs provided with-TTemperature differenceLess than the high temperature protection temperature set value;
s103, when the outdoor environment temperature value TcLess than or equal to the restart temperature set value TIs provided with-TTemperature differenceWhen the air conditioner is in the high-temperature protection mode, the air conditioner is controlled to exit the high-temperature protection mode;
s104, when the outdoor environment temperature value TcGreater than the restart temperature setpoint TIs provided with-TTemperature differenceAnd controlling the air conditioner to keep running in a high-temperature protection mode.
In one embodiment, the high temperature protection control method of an air conditioner further includes:
s201, after the air conditioner is controlled to enter a high-temperature protection mode, when the outdoor ambient temperature value TcWhen the temperature is higher than the high-temperature protection set value, the outdoor fan is controlled to continuously operate for the first fan heat dissipation time t1；
S202, continuously operating the outdoor fan for the first fan heat dissipation time t1If the indoor and outdoor ring temperature value TcLess than or equal to the restart temperature set value TIs provided with-TTemperature differenceControlling the air conditioner to exit the high-temperature protection mode;
s203, continuously operating the outdoor fan for the first fan heat dissipation time t1Then, if the outdoor ring temperature value TcGreater than the restart temperature setpoint TIs provided with-TTemperature differenceAnd controlling the outdoor fan to stop running.
In one embodiment, the high temperature protection control method of an air conditioner further includes:
when the controller 1 receives a shutdown signal before receiving the temperature data of the outdoor temperature sensor 4, the controller 1 controls the outdoor fan to stop running after controlling the air conditioner to exit the high-temperature protection mode.
In one embodiment, the high temperature protection control method of an air conditioner further includes:
when the controller 1 receives the starting signal before receiving the temperature data of the outdoor temperature sensor 4, the controller 1 controls the air conditioner to start after controlling the air conditioner to exit the high temperature protection mode.
In one embodiment, the high temperature protection control method of an air conditioner further includes:
after the outdoor fan is controlled to stop running, when the stop running time of the outdoor fan reaches the second fan heat dissipation time t2And when the air conditioner is started, controlling the air conditioner to start.
In one embodiment, the preset high-temperature protection conditions are as follows: outdoor ring temperature value TcIs more than or equal to the high temperature protection temperature set value.
In one embodiment, the high temperature protection control method of an air conditioner further includes:
when the controller 1 receives the temperature data of the outdoor temperature sensor 4 and the compressor is in the running state, the controller 1 controls the compressor and the outdoor fan to run after the air conditioner exits the high-temperature protection mode.
In one embodiment, the preset high-temperature protection conditions are as follows: an outer temperature value T of the chamber within a first time periodcIs greater than the high temperature protection temperature set value.
To sum up, the embodiment of the present invention provides an air conditioner and a high temperature protection control method for the air conditioner, and compared with the prior art, the present embodiment has the beneficial effects that after a high temperature protection mode is started, the restart of the compressor is logically determined by the restart temperature set value, and a proper high temperature protection temperature set value is redefined, instead of the prior art that the compressor can only be restarted when the outdoor ambient temperature value is lower than 46 ℃.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.

Claims (10)

1. An air conditioner comprising:
an indoor unit;
the outdoor unit comprises a compressor and an outdoor fan;
a controller that controls at least the compressor and the outdoor fan;
the outdoor temperature sensor is used for detecting the outdoor environment temperature and is electrically connected with the controller;
wherein the controller is configured to:
receiving temperature data of the outdoor temperature sensor, and controlling the air conditioner to enter a high-temperature protection mode when an outdoor ambient temperature value meets a preset high-temperature protection condition;
after controlling the air conditioner to enter a high-temperature protection mode, judging whether the outdoor temperature value is less than or equal to a restart temperature set value, wherein the restart temperature set value is less than a high-temperature protection temperature set value;
when the outdoor ambient temperature value is less than or equal to the restart temperature set value, controlling the air conditioner to exit the high-temperature protection mode;
and when the outdoor temperature value is greater than the restart temperature set value, controlling the air conditioner to keep operating the high-temperature protection mode.
2. The air conditioner of claim 1, wherein the controller is further configured to:
after the air conditioner is controlled to enter a high-temperature protection mode, when the outdoor environment temperature value is larger than the high-temperature protection set value, the outdoor fan is controlled to continuously operate for a first fan heat dissipation time;
if the outdoor environment temperature value is less than or equal to the restart temperature set value within the heat dissipation time of the first fan continuously operated by the outdoor fan, controlling the air conditioner to exit the high-temperature protection mode;
and after the outdoor fan continuously operates for the first fan heat dissipation time, if the outdoor environment temperature value is greater than the restart temperature set value, controlling the outdoor fan to stop operating.
3. The air conditioner of claim 2, wherein the controller is further configured to:
when the controller receives a shutdown signal before receiving the temperature data of the outdoor temperature sensor, the controller controls the outdoor fan to stop running after controlling the air conditioner to exit the high-temperature protection mode.
4. The air conditioner of claim 2, wherein the controller is further configured to:
and when the controller receives a starting signal before receiving the temperature data of the outdoor temperature sensor, the controller controls the air conditioner to start after controlling the air conditioner to exit the high-temperature protection mode.
5. The air conditioner of claim 3, wherein the controller is further configured to:
and after the outdoor fan is controlled to stop running, when the running stop time of the outdoor fan reaches the second fan heat dissipation time, controlling the air conditioner to start.
6. The air conditioner according to claim 4 or 5, wherein the preset high temperature protection conditions are: and the outdoor environment temperature value is greater than or equal to the high-temperature protection temperature set value.
7. The air conditioner of claim 2, wherein the controller is further configured to:
when the controller receives the temperature data of the outdoor temperature sensor, the compressor is in an operation state, and the controller controls the compressor and the outdoor fan to operate after the air conditioner exits the high-temperature protection mode.
8. The air conditioner according to claim 7, wherein the preset high temperature protection condition is: and the outdoor environment temperature value is greater than the high-temperature protection temperature set value in a first duration time.
9. A high-temperature protection control method of an air conditioner is characterized by comprising the following steps:
receiving temperature data of the outdoor temperature sensor, and controlling the air conditioner to enter a high-temperature protection mode when an outdoor ambient temperature value meets a preset high-temperature protection condition;
after controlling the air conditioner to enter a high-temperature protection mode, judging whether the outdoor temperature value is less than or equal to a restart temperature set value, wherein the restart temperature set value is less than a high-temperature protection temperature set value;
when the outdoor ambient temperature value is less than or equal to the restart temperature set value, controlling the air conditioner to exit the high-temperature protection mode;
and when the outdoor temperature value is greater than the restart temperature set value, controlling the air conditioner to keep operating the high-temperature protection mode.
10. The high temperature protection control method of an air conditioner according to claim 9, further comprising:
after the air conditioner is controlled to enter a high-temperature protection mode, when the outdoor environment temperature value is larger than the high-temperature protection set value, the outdoor fan is controlled to continuously operate for a first fan heat dissipation time;
if the outdoor environment temperature value is less than or equal to the restart temperature set value within the heat dissipation time of the first fan continuously operated by the outdoor fan, controlling the air conditioner to exit the high-temperature protection mode;
and after the outdoor fan continuously operates for the first fan heat dissipation time, if the outdoor environment temperature value is greater than the restart temperature set value, controlling the outdoor fan to stop operating.
CN202010019890.6A 2020-01-08 2020-01-08 Air conditioner and high-temperature protection control method thereof Pending CN111189104A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010019890.6A CN111189104A (en) 2020-01-08 2020-01-08 Air conditioner and high-temperature protection control method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010019890.6A CN111189104A (en) 2020-01-08 2020-01-08 Air conditioner and high-temperature protection control method thereof

Publications (1)

Publication Number Publication Date
CN111189104A true CN111189104A (en) 2020-05-22

Family

ID=70703501

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010019890.6A Pending CN111189104A (en) 2020-01-08 2020-01-08 Air conditioner and high-temperature protection control method thereof

Country Status (1)

Country Link
CN (1) CN111189104A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09210490A (en) * 1996-02-07 1997-08-12 Fujitsu General Ltd Control device for air conditioner
CN104896666A (en) * 2015-05-28 2015-09-09 广东美的制冷设备有限公司 Control method for outdoor unit of air conditioner and air conditioner
CN106016586A (en) * 2016-05-18 2016-10-12 珠海格力电器股份有限公司 Over-temperature protection method and system
CN106247548A (en) * 2016-08-11 2016-12-21 合肥通用电源设备有限公司 A kind of control method of fixed frequency air conditioner unit
CN107367012A (en) * 2017-06-06 2017-11-21 珠海格力电器股份有限公司 Guard method, protection device and the protection system of air-conditioning system high temperature-proof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09210490A (en) * 1996-02-07 1997-08-12 Fujitsu General Ltd Control device for air conditioner
CN104896666A (en) * 2015-05-28 2015-09-09 广东美的制冷设备有限公司 Control method for outdoor unit of air conditioner and air conditioner
CN106016586A (en) * 2016-05-18 2016-10-12 珠海格力电器股份有限公司 Over-temperature protection method and system
CN106247548A (en) * 2016-08-11 2016-12-21 合肥通用电源设备有限公司 A kind of control method of fixed frequency air conditioner unit
CN107367012A (en) * 2017-06-06 2017-11-21 珠海格力电器股份有限公司 Guard method, protection device and the protection system of air-conditioning system high temperature-proof

Similar Documents

Publication Publication Date Title
WO2021037138A1 (en) Air conditioner preheating control method and device, and air conditioner
CN113007857B (en) Operation control method and device for electric heater of air conditioner, air conditioner and computer readable storage medium
JP2008202905A (en) Air conditioner
CN113028590B (en) Air conditioner low-temperature refrigeration control method and device and air conditioner
WO2023284458A1 (en) Leakage detection and discharge method for refrigerant of air conditioner
CN111520896A (en) Air conditioner heating external unit fan control method and air conditioner system
WO2023221664A1 (en) Control method and control apparatus for multi-split air conditioning system, and multi-split air conditioning system
WO2024093393A1 (en) Air conditioner and control method therefor
CN111189104A (en) Air conditioner and high-temperature protection control method thereof
CN114877489B (en) Room area acquisition method, air conditioner external unit control method, device and air conditioning system
CN108332344B (en) Control method for partitioned air supply air conditioner and air conditioner
JP2000111120A (en) Air conditioner outdoor unit with atmospheric temperature detecting function
JPH07120049A (en) Air conditioner
JP5814784B2 (en) Air conditioner
WO2021082398A1 (en) Control method for operation of air conditioner after heating and defrosting
JPH07154983A (en) Air conditioner
JPH07310959A (en) Air conditioner
CN115247868B (en) Air conditioner, control method thereof and computer readable storage medium
CN114484769B (en) Air conditioner control method and device and air conditioner
WO2024113848A1 (en) Air conditioner and control method therefor
WO2022111255A1 (en) Control method and operation control apparatus for air conditioner, and air conditioner
JPH01131840A (en) Control device for air conditioner
JPH043844A (en) Method of controlling air conditioner
JPH05172387A (en) Operation controller for air conditioner
CN111023448A (en) Control method for operation of air conditioner after heating and defrosting

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20200522