CN110410986B - Air conditioner shutdown control method and device and air conditioner - Google Patents
Air conditioner shutdown control method and device and air conditioner Download PDFInfo
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- CN110410986B CN110410986B CN201910728613.XA CN201910728613A CN110410986B CN 110410986 B CN110410986 B CN 110410986B CN 201910728613 A CN201910728613 A CN 201910728613A CN 110410986 B CN110410986 B CN 110410986B
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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
- F24F11/67—Switching between heating and cooling modes
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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
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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Abstract
The invention provides an air conditioner shutdown control method, an air conditioner shutdown control device and an air conditioner, wherein the air conditioner shutdown control method comprises the following steps: acquiring a heating shutdown instruction of the air conditioner; the indoor fan is closed, and the air guide door of the indoor unit is closed; switching the operation mode of the air conditioner to a refrigeration mode; judging whether the running stop condition of the compressor is met or not according to the internal temperature of the indoor unit; and if the condition that the compressor stops running is met, stopping running the compressor. According to the air conditioner shutdown control method provided by the invention, after the heating shutdown instruction of the air conditioner is obtained, residual waste heat in the indoor unit is removed by absorbing heat through the low-temperature refrigerant flowing through the indoor heat exchanger, and the user can perceive that the air conditioner stops running after sending the shutdown instruction while removing the residual heat in the indoor unit, so that the trouble of the user of the air conditioner caused by the fact that whether the air conditioner is currently in the shutdown process or not can not be judged due to the fact that the indoor fan continues to run after shutdown is avoided.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioner shutdown control method and device and an air conditioner.
Background
In the prior art, when the air conditioner is shut down in a heating state, in order to avoid residual heat of an indoor unit, after a shutdown instruction is received, a compressor stops running, an indoor fan needs to continuously run for a certain time, the indoor fan is closed, and a ventilation door is closed.
According to the shutdown control method, after the user sends the shutdown instruction, the user senses that the air conditioner is still running because the indoor fan is still running, so that the user cannot determine the current running state of the air conditioner, and the user experience is poor.
Disclosure of Invention
The invention solves the problem that the user feels that the air conditioner continues to operate after the user sends the shutdown instruction, so that the user experience is poor.
In order to solve the above problems, the present invention provides a shutdown control method for an air conditioner, comprising:
acquiring a heating shutdown instruction of the air conditioner;
closing an indoor fan, and closing an air guide door of the indoor unit;
switching the operation mode of the air conditioner to a refrigeration mode;
judging whether the running stop condition of the compressor is met or not according to the internal temperature of the indoor unit;
and if the condition that the compressor stops running is met, stopping running the compressor.
According to the air conditioner shutdown control method provided by the invention, after the heating shutdown instruction of the air conditioner is obtained, the indoor fan and the air guide door are closed, the operation mode of the air conditioner is switched to the refrigeration mode, residual heat in the indoor unit is removed by absorbing heat through a low-temperature refrigerant flowing through the indoor heat exchanger, and a user can sense that the air conditioner stops operating after sending the shutdown instruction while removing the residual heat in the indoor unit, so that the trouble that whether the air conditioner is currently in the shutdown process or not because the indoor fan continues to operate after shutdown is avoided, and the user of the air conditioner is troubled.
Further, when the indoor fan is closed, simultaneously the wind-guiding door of indoor set is closed after, still include: the outdoor fan is turned off.
According to the air conditioner shutdown control method provided by the invention, the indoor fan is turned off, and the outdoor fan is turned off at the same time, so that the noise of the air conditioner in the process of removing the residual heat of the indoor unit is further reduced, and a user can sense that the air conditioner completely stops running after sending the air conditioner shutdown instruction, so that the use comfort of the user is improved.
Further, the satisfying of the compressor stop operation condition includes:
indoor real-time ambient temperature TInner loop real timeAnd the indoor ambient temperature T when the device is turned offInner ring shutdownIs not more than a preset temperature difference n1(ii) a And/or the presence of a gas in the gas,
indoor real-time coil temperature TInner disc real timeAnd the temperature T of the indoor coil pipe during shutdownInner disc shutdownIs not more than a preset temperature and n2。
According to the air conditioner shutdown control method provided by the invention, when the condition that the compressor stops running is judged to be met, the compressor stops running, so that the service life of internal elements of the indoor unit is prevented from being influenced due to the fact that the compressor stops running when the internal temperature of the indoor unit is overhigh, and energy waste caused by the fact that the compressor still runs when the internal temperature of the indoor unit is reduced to be close to the indoor environment temperature is avoided.
Further, the preset temperature difference n1The value range of (A) is-15 to 0 ℃; the preset temperature and n2The value range of (A) is-10 to 10 ℃.
According to the air conditioner shutdown control method provided by the invention, the value ranges of the preset temperature difference and the preset temperature sum are limited, so that on one hand, the situation that the compressor stops running under the condition of high internal temperature of the indoor unit, so that residual heat in the indoor unit is remained, and the internal elements of the indoor unit are damaged is avoided; on the other hand, the problem that the compressor continues to operate under the condition that no residual heat exists in the indoor unit, so that the shutdown time of the air conditioner is too long, and energy waste is caused is avoided.
Further, after switching the operation mode of the air conditioner to the cooling mode, the method further includes:
judging whether the time length of the compressor running in the refrigeration mode reaches a first preset time length or not;
and if the time length of the compressor running in the refrigeration mode reaches a first preset time length, judging whether the running stopping condition of the compressor is met according to the internal temperature of the indoor unit.
According to the air conditioner shutdown control method provided by the invention, the compressor operation stopping condition is judged after the compressor operation time in the refrigeration mode reaches the first preset time, so that the frequency of judging the compressor operation condition can be reduced, and the energy consumption is reduced.
Further, the value range of the first preset time is 0-30 s.
According to the air conditioner shutdown control method provided by the invention, the value range of the first preset time is limited, so that on one hand, the waste of energy consumption caused by frequent judgment of the compressor shutdown condition under the condition that the temperature in the indoor unit is still high is avoided, and on the other hand, the long shutdown time and unnecessary waste of energy caused by continuous operation of the compressor after the temperature in the indoor unit is close to the indoor environment temperature can be avoided.
Further, the determining whether the compressor stop operation condition is satisfied according to the internal temperature of the indoor unit includes:
and judging whether the stop operation condition of the compressor is met or not according to the internal temperature of the indoor unit every time the compressor operates for a second preset time in a refrigeration mode.
According to the air conditioner shutdown control method provided by the invention, after the condition that the compressor stops running is judged not to be met, the condition that the compressor stops running is judged again at an interval of a second preset time, so that the frequency of judging the condition that the compressor stops running is reduced, and the energy consumption is reduced.
Further, the value range of the second preset time is 0-10 s.
According to the air conditioner shutdown control method provided by the invention, the value range of the second preset time length is limited, so that on one hand, the phenomenon that the interval time between two judgments is too short, and when the temperature in the indoor unit is not reduced to the indoor environment temperature, the running stopping condition of the compressor is frequently judged to be perfect, so that the energy waste is caused is avoided; on the other hand, the phenomenon that the compressor continues to operate to cause energy waste after the internal temperature of the indoor unit is reduced to the indoor environment temperature due to overlong interval time between two judgments can be avoided.
Further, before the operation mode of the air conditioner is switched to the cooling mode, the method further includes:
judging whether the running stop condition of the compressor is met or not according to the internal temperature of the indoor unit;
and if the compressor stop operation condition is not met, the air conditioner operates in a refrigeration mode.
According to the air conditioner shutdown control method provided by the invention, before the operation mode of the air conditioner is switched, the residual heat in the compressor is judged firstly, when no residual heat is judged, the compressor is only required to be directly stopped to operate, the residual heat removing action is still carried out under the condition that the internal temperature of an indoor unit is not high, on one hand, the waste of energy is avoided, and on the other hand, the shutdown time of the air conditioner can be shortened.
Another object of the present invention is to provide an air conditioner shutdown control apparatus, including:
the indoor fan is used for supplying air to the indoor space;
the air guide door is used for guiding the air blown out by the indoor fan into the room;
the temperature detection module is used for acquiring the internal temperature of the indoor unit;
the compressor is used for compressing a refrigerant in the air conditioner system;
the control module is in communication connection with the indoor fan, the air guide door, the temperature detection module and the compressor; the control module is used for judging whether the running stop condition of the compressor is met or not according to the internal temperature of the indoor unit;
the control module is also used for controlling the operation of the air conditioner according to the air conditioner shutdown control method.
According to the air conditioner shutdown control device provided by the invention, after the control module acquires the heating shutdown instruction of the air conditioner, the indoor fan and the air guide door are controlled to be closed, the operation mode of the air conditioner is controlled to be switched into the refrigeration mode, so that residual heat in the indoor unit is removed by absorbing heat through the low-temperature refrigerant flowing through the indoor heat exchanger, and a user can sense that the air conditioner stops operating after sending the shutdown instruction while removing the residual heat in the indoor unit, so that the problem that the user of the air conditioner is troubled because the indoor fan cannot judge whether the air conditioner is currently in the shutdown process or not because of continuous operation after shutdown is avoided.
It is still another object of the present invention to provide an air conditioner including the air conditioner shutdown control apparatus of claim 10.
Compared with the prior art, the air conditioner provided by the invention has the same advantages as the air conditioner shutdown control device, and the detailed description is omitted.
Drawings
FIG. 1 is a flow chart of a method for controlling the shutdown of an air conditioner according to the present invention;
FIG. 2 is a first flowchart illustrating a method for determining whether a compressor shutdown condition is satisfied according to the present invention;
FIG. 3 is a second flowchart illustrating a method for determining whether a compressor shutdown condition is satisfied according to the present invention;
FIG. 4 is a third flowchart illustrating the determination of whether the compressor stop condition is satisfied according to the present invention;
fig. 5 is a logic diagram of a shutdown control method of an air conditioner according to the present invention.
Detailed Description
The air conditioner runs in a heating mode, after a shutdown instruction is received, because the temperature of the indoor unit is high, if an indoor fan of the air conditioner is directly closed, more residual heat can be remained in the indoor unit, on one hand, the internal elements of the indoor unit can be damaged due to the overhigh temperature in the indoor unit, on the other hand, when the air conditioner is restarted, the residual heat remained in the indoor unit is gathered in the indoor unit, so that the indoor environment temperature detected by the indoor environment temperature sensor is overhigh, and the air conditioner cannot be started.
At present, in order to avoid residual heat of an indoor unit, after a shutdown instruction is received, a compressor of an air conditioner stops running, an indoor fan needs to continuously run for a certain time to close the indoor fan, and a ventilation door is closed. According to the shutdown control method, after the user sends the shutdown instruction, the user can still perceive the operation of the air conditioner because the indoor fan is still operated, so that the method is not in accordance with the thinking mode that the air conditioner stops completely when the user sends the shutdown instruction, and the user cannot determine the current operation state of the air conditioner, so that the user experience is poor.
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 order to avoid that the use comfort of a user is influenced because an indoor fan is still in a running state after the user sends a shutdown instruction, the invention provides a shutdown control method of an air conditioner, which is shown in a figure 1 and comprises the following steps:
s1: acquiring a heating shutdown instruction of the air conditioner;
s2: closing the indoor fan, and closing an air guide door of the indoor unit;
s4: switching the operation mode of the air conditioner to a refrigeration mode;
s7: acquiring the internal temperature of the indoor unit;
s8: judging whether the stop operation condition of the compressor is met or not according to the internal temperature of the indoor unit; if the compressor stop operation condition is met, the step S9 is executed, otherwise, the step S7 is executed;
s9: the compressor stops operating.
The method comprises the steps of obtaining a heating shutdown instruction of the air conditioner, namely after the air conditioner receives the shutdown instruction when running in a heating mode, closing an indoor fan and closing an air guide door of an indoor unit so as to avoid poor user experience caused by continuous running of the indoor fan, so that a user can sense that the air conditioner stops running after sending the shutdown instruction, and the problem that the user cannot judge whether the air conditioner is currently in a shutdown process or not because the indoor fan continues to run after sending the shutdown instruction is avoided; on the other hand, the comfort level of the user caused by the fact that the user uses the air guide door to be influenced by the fact that cold air is blown out from the air guide door in the shutdown process is avoided, and the user experience is poor.
After the indoor fan is turned off, in order to avoid the overhigh internal temperature of the indoor unit, the operation mode of the air conditioner is switched to the refrigeration mode, namely the compressor continues to operate in the refrigeration mode, so that a low-temperature refrigerant passes through the indoor heat exchanger to remove residual heat in the indoor unit, and the situation that the air conditioner cannot be started due to overhigh indoor temperature collected by an environmental temperature sensor in the indoor unit because of residual heat in the indoor unit when the air conditioner is started again is prevented.
After the operation mode of the air conditioner is switched to the refrigeration mode, whether the compressor stops operating is further judged according to the internal temperature of the indoor unit, specifically, when the internal temperature of the indoor unit is close to the indoor temperature, residual heat in the indoor unit is judged to be removed, and the condition that the compressor stops operating is judged to be met, so that the compressor stops operating, and the shutdown action of the air conditioner is completed; on the contrary, if the temperature in the indoor unit is still higher than the indoor temperature, the stop operation condition of the compressor is judged not to be met, the compressor continues to operate to remove residual waste heat in the indoor unit, the temperature in the indoor unit is obtained again, and whether the stop operation condition of the compressor is met is continuously judged according to the temperature in the indoor unit.
According to the air conditioner shutdown control method provided by the invention, after the heating shutdown instruction of the air conditioner is obtained, the indoor fan and the air guide door are closed, the operation mode of the air conditioner is switched to the refrigeration mode, residual heat in the indoor unit is removed by absorbing heat through a low-temperature refrigerant flowing through the indoor heat exchanger, and a user can sense that the air conditioner stops operating after sending the shutdown instruction while removing the residual heat in the indoor unit, so that the trouble that whether the air conditioner is currently in the shutdown process or not because the indoor fan continues to operate after shutdown is avoided, and the user of the air conditioner is troubled.
Receiving a heating shutdown instruction of the air conditioner, closing the indoor fan, and closing the outdoor fan when the air guide door is closed, or closing the outdoor fan when the compressor stops running; in order to further improve the use comfort of the air conditioner user when the air conditioner is turned off during heating, the invention preferably comprises the following steps after the indoor fan is closed and the air guide door is closed:
s3: the outdoor fan is turned off.
When the indoor fan is turned off, the outdoor fan is turned off to further reduce noise generated in the process of removing the residual heat of the indoor unit by the air conditioner, and after a user sends an air conditioner shutdown instruction, the user can perceive that the air conditioner stops running completely, so that the use comfort of the user is improved.
The specific operation of switching the operation mode of the air conditioner to the cooling mode is to cut off a four-way valve in an air conditioner system to change the flow direction of a refrigerant, so that the operation mode of the air conditioner is switched from a heating mode to the cooling mode.
Specifically, in order to judge whether the temperature inside the indoor unit is close to the indoor ambient temperature, the method for acquiring the internal temperature of the indoor unit comprises the step of acquiring the indoor real-time ambient temperature TInner loop real timeAnd the indoor ambient temperature T when the device is turned offInner ring shutdownAnd/or obtaining indoor real-time coil temperature TInner disc real timeAnd the temperature T of the indoor coil pipe during shutdownInner disc shutdown(ii) a Accordingly, satisfying the compressor stop operation condition includes:
indoor real-time ambient temperature TInner loop real timeAnd the indoor ambient temperature T when the device is turned offInner ring shutdownIs not more than a preset temperature difference n1(ii) a And/or the presence of a gas in the gas,
indoor real-time coil temperature TInner disc real timeAnd the temperature T of the indoor coil pipe during shutdownInner disc shutdownIs not more than a preset temperature and n2。
The judging whether the compressor stop operation condition is satisfied according to the internal temperature of the indoor unit includes at least one of the following judging methods, specifically, referring to fig. 2, where the first judging method includes the following processes:
s81: calculating indoor real-time environment temperature TInner loop real timeAnd the indoor ambient temperature T when the device is turned offInner ring shutdownA difference Δ T of;
s82: the calculated difference value delta T and the preset temperature difference n are compared1Carrying out comparison;
s83: judging whether the difference value delta T1 is not more than the preset temperature difference n1(ii) a If the difference value delta T is not more than the preset temperature difference n1If not, go to step S84, otherwise go to step S85;
s84: judging that the compressor stop operation condition is met;
s85: it is determined that the compressor stop condition is not satisfied.
Because the indoor environment temperature sensor used for measuring the indoor environment temperature in the indoor unit is arranged in the indoor unit, the change condition of the indoor environment temperature detected by the indoor environment temperature sensor can reflect the change condition of the indoor unit internal temperature under the condition that the indoor fan is closed and the air guide door is closed, so that the cleaning degree of residual waste heat in the indoor unit is reflected.
The invention is realized by changing the indoor real-time environment temperature TInner loop real timeAnd the indoor ambient temperature T when the device is turned offInner ring shutdownDifference value delta T and preset temperature difference n1Comparing, and judging the reduction degree of the indoor environment temperature of the air conditioner in the residual waste heat removing process; when the difference value delta T is not more than the preset temperature difference n1In time, the real-time indoor environment temperature T detected by the indoor environment temperature sensor is judgedInner loop real timeThe indoor ambient temperature T at shutdown detected when the air conditioner obtains a shutdown instructionInner ring shutdownCompared with the prior art, the temperature of the indoor unit is lowered more, the preset lowering temperature is reached, and the temperature inside the indoor unit is close to the indoor environment temperature, so that the residual heat inside the indoor unit is judged to be removed, the condition that the compressor stops running is met, and the compressor stops running.
Conversely, when the difference Δ T is greater than the preset temperature difference n1In time, the real-time indoor environment temperature T detected by the indoor environment temperature sensor is judgedInner loop real timeThe indoor ambient temperature T at shutdown detected when the air conditioner obtains a shutdown instructionInner ring shutdownCompared with the prior art, the temperature inside the indoor unit is not close to the indoor environment temperature when the temperature is not reduced much and does not reach the preset reduction temperature, so that the residual heat inside the indoor unit is not completely removed when the temperature is judged, the condition that the compressor stops running is not met, the compressor continues to run, and the low-temperature refrigerant continues to absorb heat in the indoor unit to remove the residual heat until the condition that the compressor stops running is met.
Wherein the preset temperature difference n1The value range of the temperature difference n is obtained through tests according to different air conditioner models, and the preset temperature difference n is preferably selected by the invention1The value range of (A) is-15 to 0 ℃.
For example, the preset temperature difference n1 is taken as-5 ℃ as an example to illustrate, and the indoor environment temperature T measured when the device is turned offInner ring shutdownAt 25 deg.C, under the condition of that indoor fan is closed and air-guiding door is closed, the measured indoor real-time environmental temperature TInner loop real timeAt 18 deg.C, the indoor real-time ambient temperature TInner loop real timeAnd the indoor ambient temperature T when the device is turned offInner ring shutdownThe difference value delta T is-7 ℃, and the requirement that the difference value delta T is not more than the preset temperature difference n is met1Judging that the compressor stop operation condition is met; on the contrary, if the indoor real-time environment temperature T is detectedInner loop real timeAt 22 deg.C, the indoor real-time ambient temperature TInner loop real timeAnd the indoor ambient temperature T when the device is turned offInner ring shutdownThe difference value delta T is-3 ℃, and the difference value delta T is not larger than the preset temperature difference n1If so, the compressor stop operation condition is judged not to be met, and the compressor continues to operate.
Similar to the first determination method, referring to fig. 3, the second determination method comprises the following steps:
s801: calculating indoor real-time coil temperature TInner disc real timeAnd the temperature T of the indoor coil pipe during shutdownInner disc shutdownSum Σ T;
s802: the calculated sum sigma T and the preset temperature sum n2Carrying out comparison;
s803: judging whether the sum sigma T is not more than the preset temperature sum n2(ii) a If the sum sigma-delta T is not greater than the preset temperature sum n2If not, go to step S804, otherwise go to step S805;
s804: judging that the compressor stop operation condition is met;
s805: it is determined that the compressor stop condition is not satisfied.
In order to improve the applicability and the accuracy of a control result of the air conditioner shutdown control method provided by the invention, the invention provides another judgment method for stopping the operation of the compressor, and the difference from the first judgment method provided by the invention is that the residual heat in the indoor unit is judged according to the temperature of the indoor coil.
When the air conditioner operates in a heating mode, the refrigerant in the heat exchanger of the indoor unit is a high-temperature refrigerant, and the temperature of the indoor coil detected by the indoor coil temperature sensor is greater than 0; the air conditioner is still operated in a heating mode when receiving a shutdown instruction, so that the temperature T of the indoor coil pipe is in shutdownInner disc shutdownA value of greater than 0; the air conditioner is in the process of removing waste heat in the indoor unit, the air conditioner operates in a refrigeration mode, at the moment, the refrigerant in the heat exchanger of the indoor unit is a low-temperature refrigerant, the temperature of the indoor coil pipe is gradually reduced, and after the air conditioner operates for a period of time, the indoor real-time coil pipe temperature T detected by the indoor coil pipe temperature sensorInner disc real timeLess than 0; the calculated indoor real-time coil temperature TInner disc real timeAnd the temperature T of the indoor coil pipe during shutdownInner disc shutdownSum Σ T and preset temperature sum n2Comparing, and judging whether the sum sigma T is not more than the preset temperature sum n2(ii) a If the sum sigma-delta T is not greater than the preset temperature sum n2To judge the detection of the indoor coil temperature sensorReal-time indoor coil temperature TInner disc real timeThe temperature T of the indoor coil pipe at the time of shutdown, which is detected when the air conditioner obtains the shutdown instructionInner disc shutdownCompared with the prior art, the temperature of the indoor unit is lowered more, the preset lowering temperature is reached, and the temperature inside the indoor unit is close to the indoor environment temperature, so that the residual heat inside the indoor unit is judged to be removed, the condition that the compressor stops running is met, and the compressor stops running.
Conversely, when the sum Σ T is greater than the preset temperature sum n2In time, the real-time indoor coil temperature T detected by the indoor environment temperature sensor is judgedInner disc real timeThe temperature T of the indoor coil pipe at the time of shutdown, which is detected when the air conditioner obtains the shutdown instructionInner disc shutdownCompared with the prior art, the temperature inside the indoor unit is not close to the indoor environment temperature when the temperature is not reduced much and does not reach the preset reduction temperature, so that the residual heat inside the indoor unit is not completely removed when the temperature is judged, the condition that the compressor stops running is not met, the compressor continues to run, and the low-temperature refrigerant continues to absorb heat in the indoor unit to remove the residual heat until the condition that the compressor stops running is met.
By a predetermined temperature difference n1Same, preset temperature and n2The value range of the air conditioner is obtained by tests according to different air conditioner models, and the preset temperature and the n are optimized according to the air conditioner model2The value range of (A) is-10 to 10 ℃.
For example, the preset temperature and the value of n2 being 5 ℃ are taken as examples for explanation, and the indoor coil temperature T measured when the device is turned off is measuredInner disc shutdownThe temperature is 30 ℃, and the measured indoor real-time coil temperature T is measured under the conditions that the indoor fan is closed and the air guide door is closedInner disc real timeAt-26 deg.C, the indoor real-time coil temperature TInner disc real timeWith the measured indoor coil temperature T at shutdownInner disc shutdownHas a sum sigma-T of 4 ℃ and satisfies that the sum sigma-T is not greater than a preset temperature sum n2Judging that the compressor stop operation condition is met; conversely, if the indoor real-time coil temperature T is detectedInner disc real timeAt-24 deg.C, the indoor real-time coil temperature TInner disc real timeWith the measured indoor coil temperature T at shutdownInner disc shutdownHas a sum sigma-T of 6 ℃ and does not satisfy the condition that the sum sigma-T is not more than a preset temperature sumn2If so, the compressor stop operation condition is judged not to be met, and the compressor continues to operate.
To further improve the accuracy of the control process, referring to fig. 4, the present invention further provides a third method for determining a compressor shutdown condition, the method comprising:
s8001: calculating indoor real-time environment temperature TInner loop real timeAnd the indoor ambient temperature T when the device is turned offInner ring shutdownA difference Δ T of;
s8002: the calculated difference value delta T and the preset temperature difference n are compared1Carrying out comparison;
s8003: judging whether the difference value delta T is not more than a preset temperature difference n1(ii) a If the difference value delta T is not larger than the preset temperature difference n1, the step S8004 is carried out, otherwise, the step S8008 is carried out;
s8004: calculating indoor real-time coil temperature TInner disc real timeAnd the temperature T of the indoor coil pipe during shutdownInner disc shutdownSum Σ T;
s8005: the calculated sum sigma T and the preset temperature sum n2Carrying out comparison;
s8006: judging whether the sum sigma T is not more than the preset temperature sum n2(ii) a If the sum sigma-delta T is not greater than the preset temperature sum n2Step S8007 is entered, otherwise step S8008 is entered;
s8007: judging that the compressor stop operation condition is met;
s8008: it is determined that the compressor stop condition is not satisfied.
The third judgment method is to meet the indoor real-time environment temperature TInner loop real timeAnd the indoor ambient temperature T when the device is turned offInner ring shutdownIs not more than a preset temperature difference n1And indoor real-time coil temperature TInner disc real timeAnd the temperature T of the indoor coil pipe during shutdownInner disc shutdownIs not more than a preset temperature sum n2And the judgment result shows that the compressor stop operation condition is met, so that the judgment standard of the compressor stop operation condition is improved, the removal force of the waste heat in the indoor unit is improved, and the use comfort of the air conditioner is improved.
The air conditioner shutdown control method provided by the invention judges whether the temperature inside the indoor unit is close to the indoor ambient temperature or not according to the indoor real-time ambient temperature and the indoor coil temperature detected by the temperature sensor after the air conditioner is shutdown, and judges that the condition for stopping the operation of the compressor is met when the temperature inside the indoor unit is judged to be close to the indoor ambient temperature, and the compressor stops operating.
According to the air conditioner shutdown control method provided by the invention, the value ranges of the preset temperature difference and the preset temperature sum are limited, so that on one hand, the situation that the compressor stops running under the condition of high internal temperature of the indoor unit, so that residual heat in the indoor unit is remained, and the internal elements of the indoor unit are damaged is avoided; on the other hand, the problem that the compressor continues to operate under the condition that no residual heat exists in the indoor unit, so that the shutdown time of the air conditioner is too long, and energy waste is caused is avoided.
In order to avoid energy waste caused by frequently judging whether the running stop condition of the compressor is met, the air conditioner shutdown processing method provided by the invention further comprises the following steps after the running mode of the air conditioner is switched into the refrigeration mode:
s5: acquiring the running time of the compressor in a refrigeration mode;
s6: judging whether the time length of the compressor running in the refrigeration mode reaches a first preset time length or not; if the time period for which the compressor is operated in the cooling mode reaches the first preset time period, the process proceeds to step S7, otherwise, the process proceeds to step S5.
The value range of the first preset time is determined according to the type and experience of the air conditioner, and the value range of the first preset time is preferably 0-30 s.
The running time of the compressor in the refrigeration mode refers to the running time of the air conditioner after the running mode is switched to the refrigeration mode; before judging the condition that the compressor stops operating, firstly judging whether the time length that the compressor operates in a refrigeration mode reaches a first preset time length; after the time length of the compressor running in the refrigeration mode reaches the first preset time length, the possibility that the temperature inside the indoor unit is close to the indoor environment temperature at the moment is judged to be high, namely the possibility that the condition for stopping running of the compressor is met is high at the moment, therefore, after the time length of the compressor running in the refrigeration mode reaches the first preset time length, the condition for stopping running of the compressor is judged, the frequency for judging the running condition of the compressor can be reduced, and the energy consumption is reduced.
According to the air conditioner shutdown control method provided by the invention, the compressor operation stopping condition is judged after the compressor operation time in the refrigeration mode reaches the first preset time, so that the frequency of judging the compressor operation condition can be reduced, and the energy consumption is reduced.
According to the air conditioner shutdown control method provided by the invention, the value range of the first preset time is limited, so that on one hand, the waste of energy consumption caused by frequent judgment of the compressor shutdown condition under the condition that the temperature in the indoor unit is still high is avoided, and on the other hand, the long shutdown time and unnecessary waste of energy caused by continuous operation of the compressor after the temperature in the indoor unit is close to the indoor environment temperature can be avoided.
In order to further reduce the frequency of judging the stop operation condition of the compressor, the air conditioner shutdown control method provided by the invention comprises the following steps of judging whether the stop operation condition of the compressor is met according to the internal temperature of the indoor unit: and judging whether the stop operation condition of the compressor is met or not according to the internal temperature of the indoor unit every time the compressor operates for a second preset time in the refrigeration mode.
Namely, after judging that the compressor stop operation condition is not met, starting timing; and after the timing duration reaches a second preset duration, judging whether the compressor stop operation condition is met or not according to the internal temperature of the indoor unit again until the judgment result shows that the compressor stop operation condition is met.
Referring to fig. 5, after judging that the compressor stop operation condition is not satisfied, judging the compressor stop operation condition again at an interval of a second preset time to reduce the frequency of judging the compressor stop operation condition and reduce energy consumption.
The value range of the second preset time length is determined according to the type and experience of the air conditioner; in the invention, the value range of the second preset time is preferably 0-10 s.
According to the air conditioner shutdown control method provided by the invention, the value range of the second preset time length is limited, so that on one hand, the phenomenon that the interval time between two judgments is too short, and when the temperature in the indoor unit is not reduced to the indoor environment temperature, the running stopping condition of the compressor is frequently judged to be perfect, so that the energy waste is caused is avoided; on the other hand, the phenomenon that the compressor continues to operate to cause energy waste after the internal temperature of the indoor unit is reduced to the indoor environment temperature due to overlong interval time between two judgments can be avoided.
In order to avoid the waste of energy caused by the fact that the air conditioner clears residual waste heat in the indoor unit under the condition that the temperature in the indoor unit is not high, the shutdown control method of the air conditioner provided by the invention also comprises the following steps before the operation mode of the air conditioner is switched to the refrigeration mode:
judging whether the stop operation condition of the compressor is met or not according to the internal temperature of the indoor unit;
if the compressor stop operation condition is not satisfied, the air conditioner is operated in a cooling mode.
Specifically, the process of determining whether the compressor stop operation condition is satisfied according to the internal temperature of the indoor unit is the same as the related determination process described above, and is not described herein again.
When the condition that the compressor stops running is judged to be met, the fact that no residual heat remains in the indoor unit is proved, the running mode of the air conditioner does not need to be switched to the refrigerating mode, and the compressor can be directly stopped running.
On the contrary, when the compressor stop operation condition is judged not to be satisfied, the fact that residual heat remains in the indoor unit at the moment is proved, the operation mode of the air conditioner needs to be switched into the refrigeration mode, and after the residual heat in the indoor unit is removed, the compressor stops operating.
According to the air conditioner shutdown control method provided by the invention, before the operation mode of the air conditioner is switched, the residual heat in the compressor is judged firstly, when no residual heat is judged, the compressor is only required to be directly stopped to operate, the residual heat removing action is still carried out under the condition that the internal temperature of an indoor unit is not high, on one hand, the waste of energy is avoided, and on the other hand, the shutdown time of the air conditioner can be shortened.
Another object of the present invention is to provide a shutdown control apparatus for an air conditioner, the apparatus comprising:
the indoor fan is used for supplying air to the indoor space;
the air guide door is used for guiding air blown out by the indoor fan into the room;
the temperature detection module is used for acquiring the internal temperature of the indoor unit;
the compressor is used for compressing a refrigerant in the air conditioner system;
the control module is in communication connection with the indoor fan, the air guide door, the temperature detection module and the compressor; the control module is used for judging whether the running stop condition of the compressor is met or not according to the internal temperature of the indoor unit;
the control module is also used for controlling the operation of the air conditioner according to the air conditioner shutdown control method.
According to the air conditioner shutdown control device provided by the invention, after the control module acquires the heating shutdown instruction of the air conditioner, the indoor fan and the air guide door are controlled to be closed, the operation mode of the air conditioner is controlled to be switched into the refrigeration mode, so that residual heat in the indoor unit is removed by absorbing heat through the low-temperature refrigerant flowing through the indoor heat exchanger, and a user can sense that the air conditioner stops operating after sending the shutdown instruction while removing the residual heat in the indoor unit, so that the problem that the user of the air conditioner is troubled because the indoor fan cannot judge whether the air conditioner is currently in the shutdown process or not because of continuous operation after shutdown is avoided.
Another object of the present invention is to provide an air conditioner, which includes the above air conditioner shutdown control device.
According to the air conditioner provided by the invention, after the control module acquires the heating shutdown instruction of the air conditioner, the indoor fan and the air guide door are controlled to be closed, the operation mode of the air conditioner is controlled to be switched into the refrigeration mode, so that residual heat in the indoor unit is removed by absorbing heat through the low-temperature refrigerant flowing through the indoor heat exchanger, a user can sense that the air conditioner stops operating after sending the shutdown instruction while removing the residual heat in the indoor unit, and the trouble that whether the air conditioner is currently in the shutdown process or not because the indoor fan continues to operate after shutdown is avoided for the air conditioner user.
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 (10)
1. An air conditioner shutdown control method is characterized by comprising the following steps:
acquiring a heating shutdown instruction of the air conditioner;
closing an indoor fan, and closing an air guide door of an indoor unit;
switching the operation mode of the air conditioner to a refrigeration mode;
judging whether the running stop condition of the compressor is met or not according to the internal temperature of the indoor unit;
if the condition that the compressor stops running is met, stopping running the compressor;
wherein the satisfying of the compressor stop operation condition includes:
indoor real-time ambient temperature TInner loop real timeAnd the indoor ambient temperature T when the device is turned offInner ring shutdownIs not more than a preset temperature difference n1(ii) a And/or the presence of a gas in the gas,
indoor real-time coil temperature TInner disc real timeAnd the temperature T of the indoor coil pipe during shutdownInner disc shutdownIs not more than a preset temperature and n2。
2. The shutdown control method of claim 1, further comprising, after the indoor fan is turned off and the air guide door of the indoor unit is closed: the outdoor fan is turned off.
3. An air conditioner shutdown control method as claimed in claim 1, wherein the preset temperature difference n1The value range of (A) is-15 to 0 ℃; the preset temperature and n2The value range of (A) is-10 to 10 ℃.
4. The shutdown control method of an air conditioner according to claim 1, further comprising, after switching the operation mode of the air conditioner to the cooling mode:
judging whether the time length of the compressor running in the refrigeration mode reaches a first preset time length or not;
and if the time length of the compressor running in the refrigeration mode reaches a first preset time length, judging whether the running stopping condition of the compressor is met according to the internal temperature of the indoor unit.
5. The shutdown control method of the air conditioner according to claim 4, wherein the first preset time period is in a range of 0-30 s.
6. The shutdown control method of claim 1, wherein the determining whether the compressor stop condition is satisfied according to the internal temperature of the indoor unit comprises:
and judging whether the stop operation condition of the compressor is met or not according to the internal temperature of the indoor unit every time the compressor operates for a second preset time in a refrigeration mode.
7. The shutdown control method of the air conditioner according to claim 6, wherein the second preset time period is in a range of 0-10 s.
8. The shutdown control method of an air conditioner according to claim 1, further comprising, before switching the operation mode of the air conditioner to the cooling mode:
judging whether the running stop condition of the compressor is met or not according to the internal temperature of the indoor unit;
and if the compressor stop operation condition is not met, the air conditioner operates in a refrigeration mode.
9. An air conditioner shutdown control apparatus, comprising:
the indoor fan is used for supplying air to the indoor space;
the air guide door is used for guiding the air blown out by the indoor fan into the room;
the temperature detection module is used for acquiring the internal temperature of the indoor unit;
the compressor is used for compressing a refrigerant in the air conditioner system;
the control module is in communication connection with the indoor fan, the air guide door, the temperature detection module and the compressor; the control module is used for judging whether the running stop condition of the compressor is met or not according to the internal temperature of the indoor unit;
the control module is further used for controlling the operation of the air conditioner according to the air conditioner shutdown control method of any one of claims 1 to 8.
10. An air conditioner characterized in that it comprises the air conditioner shutdown control apparatus of claim 9.
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| CN112432335B (en) * | 2020-11-02 | 2022-09-06 | 青岛海尔空调器有限总公司 | Method and device for controlling air conditioner and air conditioner |
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| JP2001201143A (en) * | 2000-01-18 | 2001-07-27 | Mitsubishi Heavy Ind Ltd | Air conditioner |
| GB2542083B (en) * | 2014-07-30 | 2020-04-08 | Mitsubishi Electric Corp | Air-conditioning apparatus |
| CN105135620B (en) * | 2015-09-11 | 2017-11-10 | 广东美的暖通设备有限公司 | Air-conditioner outdoor unit Defrost method |
| CN106871356A (en) * | 2017-02-23 | 2017-06-20 | 广东美的制冷设备有限公司 | The control method and device and air-conditioner of air-conditioner |
| CN107036239B (en) * | 2017-04-11 | 2019-10-29 | 广东美的制冷设备有限公司 | Waste heat control method, system and the air conditioner of air conditioner |
| CN107084429B (en) * | 2017-04-17 | 2020-02-04 | 青岛海尔空调器有限总公司 | Air conditioner and control method thereof |
| CN108731212B (en) * | 2018-06-20 | 2020-07-28 | 广东美的制冷设备有限公司 | Air conditioner and control method and device for blowing waste heat thereof |
| CN109595758A (en) * | 2018-11-30 | 2019-04-09 | 广东美的制冷设备有限公司 | Control method, device and the air conditioner with it of air conditioner |
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