CN112628852A - Air conditioner with room humidity alarm function and control method thereof - Google Patents
Air conditioner with room humidity alarm function and control method thereof Download PDFInfo
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- CN112628852A CN112628852A CN202110045846.7A CN202110045846A CN112628852A CN 112628852 A CN112628852 A CN 112628852A CN 202110045846 A CN202110045846 A CN 202110045846A CN 112628852 A CN112628852 A CN 112628852A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/52—Indication arrangements, e.g. displays
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/20—Humidity
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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)
- Human Computer Interaction (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- General Physics & Mathematics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention relates to an air conditioner with a room humidity alarm function and a control method thereof, wherein the air conditioner comprises an indoor unit and an outdoor unit, wherein the indoor unit comprises a first heat exchanger, a second heat exchanger and a third heat exchanger; the first end of the first heat exchanger is connected with the outdoor unit, and the second end of the first heat exchanger is connected with the second end of the second heat exchanger after passing through a third electronic expansion valve and connected with the second end of the third heat exchanger after passing through the first electronic expansion valve; the first end of the second heat exchanger is connected with the outdoor unit after passing through a second electronic expansion valve; the first end of the third heat exchanger is connected with the outdoor unit after passing through the electromagnetic valve; the air outlet of the indoor unit is communicated with the radiation panel; a temperature sensor is arranged at the air outlet; a temperature and humidity sensor is arranged at an air return port of the indoor unit; the temperature sensor and the temperature and humidity sensor are both connected to the controller; the controller is also connected with an alarm. By controlling the reheating quantity, the anti-condensation protection and the alarm are realized, and the user experience is improved.
Description
Technical Field
The invention relates to an air conditioner and a control method thereof, in particular to a radiation air conditioner and a control method thereof, and specifically relates to an air conditioner with a room humidity alarm function and a control method thereof.
Background
The radiation air conditioner has the advantages of no wind sensation, silence and the like, can be integrated with decoration, does not occupy space, is very attractive and comfortable when being installed at home, and is adopted by more and more families. However, the working principle is to use the radiation of the surface and weak wind to treat the indoor heat and humidity load, and if the indoor air humidity is high, the surface is easy to be condensed. If the surface of the product is in a high-humidity state for a long time, a large amount of condensed water is generated on the surface of the product, and the use experience and safety of a user are influenced.
At present, no radiation air conditioner capable of detecting and alarming the humidity in a room exists. Therefore, there is an urgent need for improvement of the prior art to better meet the market demand.
Disclosure of Invention
The invention aims to provide an air conditioner with a room humidity alarm function and a control method thereof, aiming at the defects of the prior art, so that multi-stage condensation prevention protection can be realized, an alarm can be given when the room humidity is serious, and the air conditioner is convenient for a user to use.
The technical scheme of the invention is as follows:
an air conditioner with a room humidity alarm function comprises an indoor unit and an outdoor unit, wherein the indoor unit comprises a first heat exchanger, a second heat exchanger and a third heat exchanger; the first end of the first heat exchanger is connected with the outdoor unit, and the second end of the first heat exchanger is connected with the second end of the second heat exchanger after passing through a third electronic expansion valve and connected with the second end of the third heat exchanger after passing through the first electronic expansion valve; the first end of the second heat exchanger is connected with the outdoor unit after passing through a second electronic expansion valve; the first end of the third heat exchanger is connected with the outdoor unit after passing through the electromagnetic valve; the air outlet of the indoor unit is communicated with the radiation panel; a temperature sensor is arranged at the air outlet; a temperature and humidity sensor is arranged at an air return port of the indoor unit; the temperature sensor and the temperature and humidity sensor are both connected to the controller; the controller is also connected with an alarm.
A control method of an air conditioner with a room humidity alarm function comprises the following steps:
1) the unit operates in a refrigeration mode; the first heat exchanger and the second heat exchanger in the indoor unit are evaporators, and the third heat exchanger is closed and is not communicated with a refrigerant; the fan starts to operate; the first electronic expansion valve and the electromagnetic valve are closed and are not communicated with the refrigerant; the third electronic expansion valve is fully opened and does not play a throttling role; the second electronic expansion valve plays a role in throttling;
2) detecting the outlet air temperature Tc through a temperature sensor; detecting the return air temperature and humidity through a temperature and humidity sensor, and calculating the dew point temperature Td according to the return air temperature and humidity;
3) if Td is more than or equal to Ty1, turning to step 4); if Td is more than or equal to Ty2, turning to step 10); if Td is more than or equal to Ty3, turning to step 11); if Td is more than or equal to Ty4, turning to step 12); wherein: ty1 is a first preset temperature, Ty12 is a second preset temperature, Ty3 is a third preset temperature, Ty4 is a fourth preset temperature, and Ty1 is more than Ty2 is more than Ty3 is more than Ty 4;
4) detecting an air outlet temperature Tb, and calculating a temperature difference delta T = Td-Tb;
5) if the delta T is larger than or equal to Tc1, the first duration S1 starts to time; wherein Tc1 is a first predetermined temperature difference;
6) when S1= Sy1, entering primary anti-condensation protection; wherein Sy1 is a first preset time;
at the moment, the electromagnetic valve is opened, and the first electronic expansion valve and the second electronic expansion valve are both opened to play a role in throttling and pressure reduction; the third electronic expansion valve is fully opened and does not play a throttling role; the first heat exchanger and the second heat exchanger in the indoor unit are evaporators, and the third heat exchanger is a condenser;
7) when any one of the following conditions is met, the anti-condensation protection is quitted, and the step 1) is switched; otherwise, turning to step 8);
td < Ty 1; Δ T < Tc 2; wherein Tc2 is a second predetermined temperature difference;
8) when S1 > Sy2, go to step 9); otherwise, turning to step 7); wherein Sy2 is a second preset time;
9) entering into an anti-condensation protection II; at the moment, the second electronic expansion valve is fully opened and does not play a throttling role; the first electronic expansion valve and the third electronic expansion valve are both opened to play a throttling role; a first heat exchanger in the indoor unit is an evaporator, and a second heat exchanger and a third heat exchanger are condensers; then, go to step 7);
10) the second duration S2 begins to count; turning to step 13);
11) the second duration S2 and the third duration S3 begin timing at the same time; turning to step 13);
12) the second duration S2, the third duration S3, and the fourth duration S4 are counted simultaneously; turning to step 13);
13) turning to step 14) when any one of the following conditions is met; otherwise, turning to the step 4);
s2= Sy 3; s3= Sy 4; s4= Sy 5; wherein Sy3 is a third preset time, Sy4 is a fourth preset time, Sy5 is a fifth preset time, and Sy3 > Sy4 > Sy 5;
14) when the room humidity is too high and an alarm is given, the unit operates an air supply mode and starts timing a fifth duration time S5;
15) if the unit operation mode is changed by the user, turning to step 17); otherwise, turning to step 16);
16) when S5= Sy6, go to step 17); wherein Sy6 is a sixth preset time;
17) the unit operates according to a set mode.
The invention has the beneficial effects that:
the invention has reasonable design and convenient control, realizes multi-stage condensation prevention protection and improves user experience by three groups of heat exchangers and a mode of controlling reheat. Meanwhile, the alarm can be given to serious room humidity, the condensation generation probability is reduced, and the energy-saving and environment-friendly effects are achieved.
Drawings
Fig. 1 is a schematic structural view of an indoor unit according to the present invention.
100-indoor unit; 101-a fan; 102-a temperature and humidity sensor; 103-a first heat exchanger; 104-a first electronic expansion valve; 105-a third heat exchanger; 106-a second electronic expansion valve; 107-third electronic expansion valve; 108-a temperature sensor; 109-an electromagnetic valve; 110-a second heat exchanger; 111-air return; 112-air outlet; 113-a radiation panel; 114-a liquid tube; 115-trachea. The arrows indicate the refrigerant flow direction.
Detailed Description
The invention is further described below with reference to the figures and examples.
As shown in fig. 1, an air conditioner with room humidity alarm function includes an indoor unit and an outdoor unit.
The outdoor unit includes a refrigerant circulation circuit including a compressor, an outdoor heat exchanger, etc., and is connected to the indoor unit 100 through a liquid pipe 114 and a gas pipe 115.
The indoor unit 100 includes a first heat exchanger 103, a second heat exchanger 110, and a third heat exchanger 105. A first end of the first heat exchanger 103 is connected to a liquid pipe 114 of the outdoor unit, a second end thereof is divided into two paths, one path passes through a third electronic expansion valve 107 and then is connected to a second end of the second heat exchanger 110, and the other path passes through a first electronic expansion valve 104 and then is connected to a second end of the third heat exchanger 105. A first end of the second heat exchanger 110 is connected to an air pipe 115 of the outdoor unit after passing through a second electronic expansion valve; the first end of the third heat exchanger 105 is connected to the air pipe 115 of the outdoor unit after passing through the electromagnetic valve 109. The air outlet 112 of the indoor unit 100 is communicated to the radiation panel 113 so as to radiate the outlet air temperature through the radiation panel, thereby achieving the temperature adjustment without wind sensation.
The air outlet 112 is provided with a temperature sensor 108, which can detect the outlet air temperature in real time. A temperature and humidity sensor 102 is disposed at a return air inlet 111 of the indoor unit 100, and can detect the temperature and humidity of return air at the same time. The temperature sensor 108 and the temperature and humidity sensor 102 are both connected to the controller, and can collect and detect information such as temperature and humidity, and perform calculation processing. Meanwhile, the controller is also connected with an alarm, and can give an alarm when the triggering condition is reached.
The invention relates to a control method of an air conditioner with a room humidity alarm function, which comprises the following steps:
1) the unit operates in a refrigeration mode; at the moment, the first heat exchanger and the second heat exchanger in the indoor unit are evaporators, and the third heat exchanger is closed and is not communicated with the refrigerant; the fan starts to operate; the first electronic expansion valve and the electromagnetic valve are closed and are not communicated with the refrigerant; the third electronic expansion valve is fully opened and does not play a throttling role; the second electronic expansion valve plays a role in throttling;
2) detecting the outlet air temperature Tc through a temperature sensor; detecting the return air temperature and humidity through a temperature and humidity sensor, and calculating the dew point temperature Td according to the return air temperature and humidity;
3) if Td is more than or equal to Ty1, turning to step 4); if Td is more than or equal to Ty2, turning to step 10); if Td is more than or equal to Ty3, turning to step 11); if Td is more than or equal to Ty4, turning to step 12); wherein: ty1 is a first preset temperature, Ty12 is a second preset temperature, Ty3 is a third preset temperature, Ty4 is a fourth preset temperature, and Ty1 is more than Ty2 is more than Ty3 is more than Ty 4;
4) detecting an air outlet temperature Tb, and calculating a temperature difference delta T = Td-Tb;
5) if the delta T is larger than or equal to Tc1, the first duration S1 starts to time; wherein Tc1 is a first predetermined temperature difference;
6) when S1= Sy1, entering primary anti-condensation protection; wherein Sy1 is a first preset time;
at the moment, the electromagnetic valve is opened, and the first electronic expansion valve and the second electronic expansion valve are both opened to play a role in throttling and pressure reduction; the third electronic expansion valve is fully opened and does not play a throttling role; the first heat exchanger and the second heat exchanger in the indoor unit are evaporators, and the third heat exchanger is a condenser;
7) when any one of the following conditions is met, the anti-condensation protection is quitted, and the step 1) is switched; otherwise, turning to step 8);
td < Ty 1; Δ T < Tc 2; wherein Tc2 is a second predetermined temperature difference;
8) when S1 > Sy2, go to step 9); otherwise, turning to step 7); wherein Sy2 is a second preset time;
9) entering into an anti-condensation protection II; at the moment, the second electronic expansion valve is fully opened and does not play a throttling role; the first electronic expansion valve and the third electronic expansion valve are both opened to play a throttling role; a first heat exchanger in the indoor unit is an evaporator, and a second heat exchanger and a third heat exchanger are condensers; then, go to step 7);
10) the second duration S2 begins to count; turning to step 13);
11) the second duration S2 and the third duration S3 begin timing at the same time; turning to step 13);
12) the second duration S2, the third duration S3, and the fourth duration S4 are counted simultaneously; turning to step 13);
13) turning to step 14) when any one of the following conditions is met; otherwise, turning to the step 4);
s2= Sy 3; s3= Sy 4; s4= Sy 5; wherein Sy3 is a third preset time, Sy4 is a fourth preset time, Sy5 is a fifth preset time, and Sy3 > Sy4 > Sy 5;
14) when the room humidity is too high and an alarm is given, the unit operates an air supply mode and starts timing a fifth duration time S5;
15) if the unit operation mode is changed by the user, turning to step 17); otherwise, turning to step 16);
16) when S5= Sy6, go to step 17); wherein Sy6 is a sixth preset time;
17) the unit operates according to a set mode.
Wherein each preset temperature and preset time are preset in the controller after passing the test.
The specific implementation process of the invention is as follows:
in the refrigerating operation of the unit, the first heat exchanger and the second heat exchanger are both used as evaporators, the third heat exchanger is closed and is not communicated with a refrigerant, and return air is dehumidified and cooled. And simultaneously detecting the return air temperature and the humidity, calculating to obtain the current dew point temperature Td, and entering different judgment processes according to different preset temperatures.
For example, the first preset temperature is 16 ℃, the second preset temperature is 22 ℃, the third preset temperature is 24 ℃ and the fourth preset temperature is 26 ℃.
If the current return air temperature is detected to be 28 ℃, the return air relative humidity is 57%, the air outlet temperature Tb is 15 ℃, the dew point temperature Td can be obtained to be 20 ℃ through calculation, and at the moment, the Td is judged to be only larger than the first preset temperature.
At this time, if the first preset temperature difference is 5 ℃, the temperature difference Δ T = Td-Tb =13 ℃, and thus it is determined that Δ T is greater than the first preset temperature difference, and the first duration starts to be counted.
And taking the first preset time as 60min, and when the first duration is longer than the first preset time, enabling the unit to enter a first-stage anti-condensation protection operation. At the moment, in order to ensure the dehumidification capacity, the first heat exchanger and the second heat exchanger of the unit are still evaporators, the electromagnetic valve is opened, so that high-temperature refrigerant from the outdoor unit flows through the third heat exchanger, return air is dehumidified and cooled by the first heat exchanger and the second heat exchanger, and then is heated and heated by the third heat exchanger, thereby not only removing the humidity load of indoor air, but also improving the temperature difference delta T and reducing the generation of condensation.
After a period of primary anti-condensation protection operation, the indoor temperature and humidity are reduced to some extent, for example, Td is reduced to 18 ℃, Tb is increased to 17 ℃, if the second preset temperature difference is 3 ℃, Δ T =1 ℃, and is less than the second preset temperature difference, the unit is quitted from anti-condensation protection, and the unit operates according to the originally set refrigeration mode.
If Td only falls to 22 deg.c, when the temperature difference Δ T =5 deg.c, is greater than the second preset temperature difference, the exit condition is not satisfied. The unit then determines the first duration. And taking the second preset time as 120min, and entering secondary anti-condensation protection if the first duration time is more than 120 min.
After entering the secondary anti-condensation protection, the risk of condensation of the unit is very high. At this time, the second electronic expansion valve is fully opened but does not play a throttling role, and the first electronic expansion valve and the third electronic expansion valve are opened to play a throttling role; the second heat exchanger and the third heat exchanger are connected with a high-temperature refrigerant from an external machine, only the first heat exchanger is used as an evaporator, return air is dehumidified and cooled by the first heat exchanger and is heated twice by the second heat exchanger and the third heat exchanger, the temperature of the outlet air is raised to be higher than that of the first-stage condensation prevention, the temperature difference between the dew point temperature and the outlet air temperature is further reduced, and the deterioration of the condensation condition is prevented.
If the unit is in the operation process, a user does not cut off the wet source, for example, windows are opened for ventilation in the use process of the air conditioner, so that a large amount of heat sources and wet sources enter the room.
At this time, it may be detected that the current return air temperature is 32 ℃, the return air relative humidity is 80%, the outlet air temperature Tb is 15 ℃, and the dew point temperature Td is 28.1 ℃ by calculation.
When the unit determines that the Td is greater than the fourth preset temperature, the second duration S2, the third duration S3 and the fourth duration S4 start to be counted at the same time. And taking the third preset time as 180min, the fourth preset time as 150min and the fifth preset time as 120 min.
When the fourth duration time is accumulated to 100min, the dew point temperature Td is reduced to 25 ℃, and at the moment, the Td is smaller than the fourth preset temperature but larger than the second preset temperature and the third preset temperature, so that the fourth duration time is stopped and cleared, and the second duration time and the third duration time are continuously timed. When the third duration reaches 150min, the program enters a room humidity overhigh alarm.
After the alarm is triggered, the unit is forced to enter an air supply mode, the temperature of a radiation air conditioner panel is increased, and condensed water is dried. Meanwhile, after the user is alarmed, the operation can be switched to the non-refrigeration mode. If the user does not operate, the unit continues to operate to supply air and calculates the duration of the air supply. And when the air supply duration reaches the preset time, the unit exits the air supply mode and continues to operate according to the original mode.
The parts not involved in the present invention are the same as or can be implemented using the prior art.
Claims (2)
1. An air conditioner with a room humidity alarm function comprises an indoor unit and an outdoor unit, and is characterized in that the indoor unit comprises a first heat exchanger, a second heat exchanger and a third heat exchanger; the first end of the first heat exchanger is connected with the outdoor unit, and the second end of the first heat exchanger is connected with the second end of the second heat exchanger after passing through a third electronic expansion valve and connected with the second end of the third heat exchanger after passing through the first electronic expansion valve; the first end of the second heat exchanger is connected with the outdoor unit after passing through a second electronic expansion valve; the first end of the third heat exchanger is connected with the outdoor unit after passing through the electromagnetic valve; the air outlet of the indoor unit is communicated with the radiation panel; a temperature sensor is arranged at the air outlet; a temperature and humidity sensor is arranged at an air return port of the indoor unit; the temperature sensor and the temperature and humidity sensor are both connected to the controller; the controller is also connected with an alarm.
2. A method for controlling an air conditioner with a room humidity alarm function according to claim 1, comprising the steps of:
1) the unit operates in a refrigeration mode; the first heat exchanger and the second heat exchanger in the indoor unit are evaporators, and the third heat exchanger is closed and is not communicated with a refrigerant; the fan starts to operate; the first electronic expansion valve and the electromagnetic valve are closed and are not communicated with the refrigerant; the third electronic expansion valve is fully opened and does not play a throttling role; the second electronic expansion valve plays a role in throttling;
2) detecting the outlet air temperature Tc through a temperature sensor; detecting the return air temperature and humidity through a temperature and humidity sensor, and calculating the dew point temperature Td according to the return air temperature and humidity;
3) if Td is more than or equal to Ty1, turning to step 4); if Td is more than or equal to Ty2, turning to step 10); if Td is more than or equal to Ty3, turning to step 11); if Td is more than or equal to Ty4, turning to step 12); wherein: ty1 is a first preset temperature, Ty12 is a second preset temperature, Ty3 is a third preset temperature, Ty4 is a fourth preset temperature, and Ty1 is more than Ty2 is more than Ty3 is more than Ty 4;
4) detecting an air outlet temperature Tb, and calculating a temperature difference delta T = Td-Tb;
5) if the delta T is larger than or equal to Tc1, the first duration S1 starts to time; wherein Tc1 is a first predetermined temperature difference;
6) when S1= Sy1, entering primary anti-condensation protection; wherein Sy1 is a first preset time;
at the moment, the electromagnetic valve is opened, and the first electronic expansion valve and the second electronic expansion valve are both opened to play a role in throttling and pressure reduction; the third electronic expansion valve is fully opened and does not play a throttling role; the first heat exchanger and the second heat exchanger in the indoor unit are evaporators, and the third heat exchanger is a condenser;
7) when any one of the following conditions is met, the anti-condensation protection is quitted, and the step 1) is switched; otherwise, turning to step 8);
td < Ty 1; Δ T < Tc 2; wherein Tc2 is a second predetermined temperature difference;
8) when S1 > Sy2, go to step 9); otherwise, turning to step 7); wherein Sy2 is a second preset time;
9) entering into an anti-condensation protection II; at the moment, the second electronic expansion valve is fully opened and does not play a throttling role; the first electronic expansion valve and the third electronic expansion valve are both opened to play a throttling role; a first heat exchanger in the indoor unit is an evaporator, and a second heat exchanger and a third heat exchanger are condensers; then, go to step 7);
10) the second duration S2 begins to count; turning to step 13);
11) the second duration S2 and the third duration S3 begin timing at the same time; turning to step 13);
12) the second duration S2, the third duration S3, and the fourth duration S4 are counted simultaneously; turning to step 13);
13) turning to step 14) when any one of the following conditions is met; otherwise, turning to the step 4);
s2= Sy 3; s3= Sy 4; s4= Sy 5; wherein Sy3 is a third preset time, Sy4 is a fourth preset time, Sy5 is a fifth preset time, and Sy3 > Sy4 > Sy 5;
14) when the room humidity is too high and an alarm is given, the unit operates an air supply mode and starts timing a fifth duration time S5;
15) if the unit operation mode is changed by the user, turning to step 17); otherwise, turning to step 16);
16) when S5= Sy6, go to step 17); wherein Sy6 is a sixth preset time;
17) the unit operates according to a set mode.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113405178A (en) * | 2021-06-29 | 2021-09-17 | 海信（广东）空调有限公司 | Air conditioning system and control method thereof |
| CN113587407A (en) * | 2021-07-30 | 2021-11-02 | 美的集团武汉暖通设备有限公司 | Air conditioner condensation prevention control method and device, air conditioner and storage medium |
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| CN111503817A (en) * | 2020-04-29 | 2020-08-07 | 广东美的暖通设备有限公司 | Air conditioning system, hydraulic module and condensation prevention control method of hydraulic module |
| CN112097330A (en) * | 2020-09-29 | 2020-12-18 | 南京天加环境科技有限公司 | Two-pipe refrigeration condensation reheating heating fresh air recovery system and control method thereof |
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| CN113405178A (en) * | 2021-06-29 | 2021-09-17 | 海信（广东）空调有限公司 | Air conditioning system and control method thereof |
| CN113405178B (en) * | 2021-06-29 | 2022-10-14 | 海信（广东）空调有限公司 | Air conditioning system and control method thereof |
| CN113587407A (en) * | 2021-07-30 | 2021-11-02 | 美的集团武汉暖通设备有限公司 | Air conditioner condensation prevention control method and device, air conditioner and storage medium |
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