CN114234358B - Air conditioner shutdown protection adjusting method and air conditioner - Google Patents
Air conditioner shutdown protection adjusting method and air conditioner Download PDFInfo
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- CN114234358B CN114234358B CN202111613885.9A CN202111613885A CN114234358B CN 114234358 B CN114234358 B CN 114234358B CN 202111613885 A CN202111613885 A CN 202111613885A CN 114234358 B CN114234358 B CN 114234358B
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- 230000001105 regulatory effect Effects 0.000 claims abstract description 4
- 238000006243 chemical reaction Methods 0.000 claims description 30
- 238000004378 air conditioning Methods 0.000 claims description 19
- 239000003814 drug Substances 0.000 claims description 12
- 239000000843 powder Substances 0.000 claims description 5
- 238000007791 dehumidification Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 6
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- 238000001816 cooling Methods 0.000 description 1
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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
- F24F11/30—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
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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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Abstract
The invention belongs to the field of air conditioners, and particularly relates to an air conditioner shutdown protection adjusting method and an air conditioner, wherein the adjusting method comprises the following steps: restarting the air conditioner, wherein the restarting is the restarting after the Nth shutdown protection; according to the shutdown protection times N, the running time t of the compressor between the N-1 shutdown and the Nth shutdown comp Correcting the frequency limiting temperature point and the frequency reducing temperature point; and regulating and controlling the air conditioner according to the corrected frequency limiting temperature point and the frequency reducing temperature point, wherein N is an integer greater than or equal to 1. The preset frequency reduction temperature point and the preset frequency limit temperature point can be adjusted in a self-adaptive mode so as to adapt to the actual operation environment of the air conditioner, take account of the refrigerating and heating capacity of the air conditioner and ensure the operation reliability of the air conditioner.
Description
Technical Field
The invention belongs to the field of air conditioners, and particularly relates to an air conditioner and an adjusting method for shutdown protection of the air conditioner.
Background
In practical application, in order to avoid the problem of reliability caused by the overweight of a system when the air conditioner operates at a high frequency, some temperature protection points can be preset, and when the temperature of the heat exchanger reaches the protection points, the frequency of the compressor can be sequentially limited, the compressor can be subjected to frequency reduction, shutdown and the like. In order to ensure the maximization of refrigeration and heating capacity, the maximum exertion of air conditioning capacity and the consideration of reliability, the protection points are preset at a moderate level. In the prior art, the temperature protection points are generally preset in a factory and are not changed any more, but when the use environment is severe, the protection points are easily triggered to reach the shutdown protection points, so that the unit is frequently protected and shutdown, finally, the operation cannot be recovered, the use of a user is influenced, and the comfort is influenced.
The present invention has been made in view of this point.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides an adjusting method for shutdown protection of an air conditioner and the air conditioner.
In order to solve the technical problem, the invention provides an adjusting method for shutdown protection of an air conditioner, which comprises the following steps:
restarting the air conditioner, wherein the restarting is after the Nth shutdown protection;
according to the shutdown protection times N and the running time t from the N-1 shutdown to the Nth shutdown of the compressor comp Correcting the frequency limiting temperature point and the frequency reducing temperature point;
and regulating and controlling the air conditioner according to the corrected frequency limiting temperature point and the corrected frequency reducing temperature point, wherein N is an integer greater than or equal to 1.
Further optionally, the running time t of the compressor between the N-1 shutdown and the Nth shutdown is determined according to the shutdown protection times N comp To correct the frequency-limiting temperature point and the frequency-reducing temperature point, including
Obtaining the shutdown protection times N and the running time t of the compressor between the N-1 shutdown and the Nth shutdown comp And a frequency-limiting temperature point T before the Nth shutdown protection Frequency limit n-1 And a temperature point T of frequency reduction Down conversion n-1 ；
Determining the corrected values of the frequency limiting temperature point and the frequency reducing temperature point according to the shutdown protection times N;
comparing the operating durations t comp And respectively correcting the frequency limiting temperature point and the frequency reducing temperature point after the Nth shutdown protection according to the comparison result and the correction values of the frequency limiting temperature point and the frequency reducing temperature point, wherein the set time length t1 is set.
Further optionally, the step of respectively correcting the frequency limiting temperature point and the frequency reducing temperature point after the nth shutdown protection according to the comparison result and the correction values of the frequency limiting temperature point and the frequency reducing temperature point comprises
When t is comp At < T1, T Frequency limitingn ＝T Frequency limit (n-1) -△T n1 ,T Frequency reduction n ＝T Frequency reduction (n-1) -△T n2 ；
When t is comp At more than or equal to T1, T Limiting frequency n ＝T Frequency limit (n-1) -△T n1 ’,T Frequency reduction n ＝T Frequency reduction (n-1) -△T n2 ’；
Wherein n is the frequency reduction times, and n is more than or equal to 1; when n =1, T Frequency limited 0 And T Down-conversion of 0 The initial frequency limiting temperature point and the initial frequency reducing temperature point;
T limiting frequency n 、T Limiting frequency n Satisfies the following conditions: t is Limiting frequency n ≥T Limited frequency min ，T Frequency reduction n ≥T Down-conversion min ；T Limiting frequency n ＜T Frequency reduction n ；
△T n1 And Δ T n1 Is a frequency-limited temperature point correction value, delta T n2 And Δ T n2 ' is a frequency reduction temperature point correction value and satisfies the following conditions: delta T n1 ≥△T n1 ’，△T n2 ≥△T n2 ’。
Further optionally, after the frequency limiting temperature point and the frequency reducing temperature point are corrected, the air conditioning unit does not have shutdown protection during the continuous operation time T2, and the frequency limiting temperature point and the frequency reducing temperature point are restored to the initial frequency limiting temperature point T Frequency limited 0 And a temperature point T of frequency reduction Down-conversion of 0 Wherein t1 is less than t2;
and/or the frequency limiting temperature point T is subjected to frequency limiting after a user shutdown instruction is received Limiting frequency n And a temperature point T of frequency reduction Limiting frequency n Is restored to the initial frequency-limiting temperature point T Frequency limited 0 And a temperature point T of frequency reduction Down-conversion of 0 。
Further optionally, the shutdown protection number N is cleared after the air conditioning unit continuously operates for t3 time or cleared when the air conditioning unit is shut down, where t1 is less than t3.
Further optionally, Δ T n1 ＝△T n2 ；
And/or, Δ T n1 ’＝△T n2 ’。
Further optionally, the temperature range of the correction value of the frequency-limiting temperature point and/or the frequency-reducing temperature point is: 1 to 3 ℃.
The present invention also proposes a control device of an air conditioner, comprising one or more processors and a non-transitory computer-readable storage medium storing program instructions which, when executed by the one or more processors, are adapted to implement the method according to any one of the above.
The invention also proposes a non-transitory computer-readable storage medium on which program instructions are stored, which program instructions, when executed by one or more processors, are adapted to implement the method according to any of the above.
The invention also proposes an air conditioner that employs the method of any one of the preceding claims, or that includes the control device of the preceding claims, or that has the non-transitory computer-readable storage medium of the preceding claims.
After adopting the technical scheme, compared with the prior art, the invention has the following beneficial effects:
the invention can adapt to the actual operation environment of the air conditioner by self-adaptively adjusting the frequency limiting temperature point and the frequency reducing temperature point, does not influence the performance of the refrigerating and heating capacity of the air conditioner in a common operation state on the premise of ensuring the reliability of the air conditioner, can avoid frequency shutdown in severe conditions, and improves the overall comfort of the unit.
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention to the right. It is obvious that the drawings in the following description are only some embodiments and that for a person skilled in the art, other drawings can also be derived from them without inventive effort. In the drawings:
FIG. 1: is a control logic diagram of the present invention.
FIG. 2 is a schematic diagram: is a module schematic diagram of a control device according to an embodiment of the present invention.
It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate it by a person skilled in the art with reference to specific embodiments.
Detailed Description
In the description of the present invention, it should be noted that the terms "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "contacting," and "communicating" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The frequency conversion air conditioner can adjust the frequency of the compressor according to the set temperature and the indoor environment temperature in the operation process, generally, the larger the temperature difference between the set temperature and the indoor environment temperature is, the higher the frequency is, the smaller the temperature difference is, when the environment temperature is close to the set temperature, the frequency is reduced, namely before the set temperature is reached, the higher frequency is used for operating to obtain the higher refrigerating and heating quantity, so that the temperature can quickly reach the set point. However, in a high-frequency operation state, the load of the unit is also heavy, especially in a severe environment (for example, the environment temperature is high, the heat exchanger is dirty and blocked, an air inlet and an air outlet are blocked, etc.) of the air conditioner, the reliability problem (the temperature of parts is too high, the pipeline pressure is too high, etc.) caused by the heavy load is easy to occurStopping raising frequency, lowering frequency, stopping machine, etc. to reach the aim of protection. These preset temperature point protections are T Frequency limiting 、T Frequency reduction 、T Shutdown (T Frequency limiting ＜T Frequency reduction ＜T Shutdown ) The detected temperature of the heat dissipating member is T Powder medicine And then:
when T is Powder medicine ＜T Frequency limiting In time, the air conditioning unit operates according to normal frequency requirements;
when T is Frequency limiting ≤T Powder medicine ＜T Frequency reduction When the air conditioner unit is started, the air conditioner unit is prohibited from running in an up-conversion mode;
when T is Frequency reduction ≤T Powder medicine ＜T Stopping the machine When the air conditioner set runs, the frequency of the air conditioner set is controlled to be reduced;
when T is Powder medicine ≥T Shutdown When the temperature is reduced, the compressor stops running, and the running is automatically recovered;
if the shutdown protection continuously occurs for multiple times, the unit cannot automatically recover, and faults are displayed to wait for manual treatment.
Aiming at the problems that the temperature protection points of the existing air conditioner can not be adjusted, when the use environment is severe, the protection is easily triggered to reach the shutdown protection points, so that the unit is frequently protected and shutdown is caused, and finally the operation can not be recovered, so that the use of a user is influenced, the embodiment provides an adjusting method for shutdown protection of the air conditioner, which comprises steps S1-S2 as shown in a control logic diagram of fig. 1, wherein:
s1, restarting an air conditioner, wherein the restarting is after the Nth shutdown protection;
s2, according to the shutdown protection times N and the running time t from the N-1 shutdown to the Nth shutdown of the compressor comp Correcting the frequency limiting temperature point and the frequency reducing temperature point;
and S3, regulating and controlling the air conditioner according to the corrected frequency limiting temperature point and the corrected frequency reducing temperature point, wherein N is an integer greater than or equal to 1.
The embodiment is characterized in that the air conditioner has overhigh temperature, namely T Powder medicine ≥T Shutdown The air conditioner is shut down in protection mode, and when the air conditioner is shut down in the Nth time in protection modeAnd restarting the compressor to operate again, and then according to the occurrence frequency N of shutdown protection and the operation time t between the N-1 shutdown and the Nth shutdown of the compressor comp The frequency limiting temperature point and the frequency reducing temperature point are corrected, so that the unit is enabled to limit the frequency or reduce the frequency to operate in advance, and the phenomenon that the shutdown is caused for multiple times when the temperature rises to the shutdown point is avoided. The adjusting method of the embodiment realizes that the frequency reduction temperature point and the frequency limit temperature point are properly self-adjusted according to the shutdown protection condition, so that the method can be more suitable for the actual operation environment of the air conditioner, and the exertion of the refrigeration and heating capacity of the air conditioner and the reliability guarantee of the refrigeration and heating capacity of the air conditioner are both considered.
Further optionally, step S2 includes S21 to S23, where:
s21, taking the shutdown protection times N and the running time t from the N-1 shutdown to the Nth shutdown of the compressor comp And a frequency-limiting temperature point T before the Nth shutdown protection Frequency limited n-1 And a temperature point T of frequency reduction Down conversion n-1 ；
S22, determining the correction values of the frequency limiting temperature point and the frequency reducing temperature point according to the shutdown protection times N; in some embodiments, the temperature range of the correction value for the frequency-limited temperature point and/or the down-converted temperature point is: 1 to 3 ℃.
S23, comparing the running time t comp And respectively correcting the frequency limiting temperature point and the frequency reducing temperature point after the Nth shutdown protection according to the comparison result and the correction values of the frequency limiting temperature point and the frequency reducing temperature point, wherein the set time length t1 is set. Specifically, when t is comp T < T1, T Limiting frequency n ＝T Frequency limit (n-1) -△T n1 ,T Frequency reduction n ＝T Frequency reduction (n-1) -△T n2 (ii) a When t is comp At more than or equal to T1, T Limiting frequency n ＝T Frequency limiting (n-1) -△T n1 ’,T Frequency reduction n ＝T Frequency reduction (n-1) -△T n2 '; wherein N is the frequency reduction frequency, N is more than or equal to 1, and N = N-1 when the shutdown frequency N is more than or equal to 2; when n =1, T Frequency limited 0 And T Down-conversion of 0 The initial frequency limiting temperature point and the initial frequency reducing temperature point; t is Limiting frequency n 、T Limiting frequency n Satisfies the following conditions: t is Limiting frequency n ≥T Limited frequency min ，T Frequency reduction n ≥T Down-conversion min ；T Limiting frequency n ＜T Frequency reduction n ；△T n1 And Δ T n1 Is a frequency-limited temperature point correction value, delta T n2 And Δ T n2 ' is a correction value of the frequency reduction temperature point, and satisfies: delta T n11 ≥△T n1 ’，△T n2 ≥△T n2 '. In some embodiments, t1 ranges from 8min to 20min.
In this embodiment, the factory preset dehumidification frequency-limiting temperature point and initial frequency-reducing temperature point of the air conditioning unit are T Frequency limited 0 、T Down-conversion of 0 The protection point of the air conditioner is T Frequency limiting 、T Frequency reduction In general, T Frequency limiting ＝T Frequency limited 0 ，T Frequency reduction ＝T Down-conversion of 0 When over T occurs Powder medicine ≥T Shutdown After the air conditioner is shut down in a protection mode, the air conditioner operates again, and T Frequency limiting 、T Frequency reduction According to the number N of the shutdown protection times and the running time t from the startup of the air-conditioning compressor to the shutdown of the protection comp Downward adjustment is performed to enable the unit to enter a frequency-limiting and reducing state in advance without triggering final protection shutdown conditions, specifically
When n =1, if t comp If < T1, then T Frequency limiting 1 ＝T Frequency limited 0 -△T11，T Frequency down 1 ＝T Down-conversion of 0 -. DELTA.T 21, if T comp Not less than T1, then T Frequency limiting 1 ＝T Frequency limited 0 -△T11’，T Frequency down 1 ＝T Down-conversion of 0 -△T21’；
When n =2, then T Frequency limiting 、T Frequency reduction Based on the last lowering adjustment, the following adjustment is performed again, if t comp If < T1, then T Frequency limiting 2 ＝T Frequency limiting 1 -△T21，T Frequency reduction 2 ＝T Frequency down conversion -. DELTA.T 22, if T comp Not less than T1, then T Frequency limiting 2 ＝T Frequency limiting 2 -△T21’，T Frequency reduction 2 ＝T Frequency reduction 2 -. DELTA.T 22'; n =3,4, \8230, and so on;
when n = n, if t comp T < T1, T Limiting frequency n ＝T Frequency limiting (n-1) -△T n1 ,T Frequency reduction n ＝T Frequency reduction (n-1) -△T n2 (ii) a If t comp When T is more than or equal to T1, T Limiting frequency n ＝T Frequency limit (n-1) -△T n1 ’,T Frequency reduction n ＝T Frequency reduction (n-1) -△T n2 ’；
In some embodiments, Δ T n1 And Δ T n2 Inequality, deltaT n1 ' and. DELTA.T n2 ' unequal, but T is satisfied Limiting frequency n ＜T Frequency reduction n . In other embodiments, Δ T n1 ＝△T n2 ，△T n1 ’＝△T n2 '. In still other embodiments, Δ T n1 And Δ T n2 Inequality, deltaT n1 ’＝△T n2 ', or Δ T n1 ' and Δ T n2 ' unequal,. DELTA.T n1 ＝△T n2 But need to satisfy T Limiting frequency n ＜T Frequency reduction n 。
Considering when T is Frequency limiting 、T Frequency reduction When the reduction is too much, the air conditioning capacity is greatly limited, and the significance of continuous operation is lost, so that the air conditioning capacity is reduced to T Frequency limiting 、T Frequency reduction Performing a minimum value, requiring T Limiting frequency n ≥T Limited frequency min ，T Frequency reduction n ≥T Down-conversion min 。
Further alternatively, as shown in the control logic diagram of fig. 1, the frequency-limiting and frequency-reducing temperature point is lowered, the performance of the cooling and heating performance of the unit is limited, so that the long-term limitation cannot be realized, and the possibly severe environment passes through in the course of time, so that the limitation is not needed, and the condition for recovering the performance is given. Specifically, the method comprises the following steps: after the frequency limiting temperature point and the frequency reducing temperature point are corrected, the air conditioning unit does not have shutdown protection during the continuous operation time T2, and the frequency limiting temperature point and the frequency reducing temperature point are restored to the initial frequency limiting temperature point T Frequency limited 0 And a temperature point T of frequency reduction Down-conversion of 0 Wherein t1 is less than t2; and/or the frequency limiting temperature point T is subjected to frequency limiting after a user shutdown instruction is received Limiting frequency n And a temperature point T of frequency reduction Limiting frequency n Is restored to the initial frequency-limiting temperature point T Frequency limited 0 And a temperature point T of frequency reduction Down-conversion of 0 . The specific mode is made according to the needs. the range of t2 is optionally 20min to 50min.
Further optionally, the protection frequency N is cleared after the air conditioning unit continuously operates for t3 time or cleared when the air conditioning unit is turned off, where t1 is smaller than t3, and the range of t3 is optionally 20min to 50min.
The following is a specific implementation of an embodiment of the present invention:
overload protection frequency limiting and frequency reducing temperature point T for leaving air conditioner Frequency limiting 、T Frequency down conversion 、T Stopping the machine The temperature was 70 ℃ and 72 ℃ and 74 ℃. When the temperature of the heat exchanger reaches 74 ℃ after the air conditioner operates for 10 minutes and first protection shutdown occurs, T is Frequency limiting 、T Frequency down conversion Adjusting the temperature to 70-3=67 ℃ and 72-3=69 ℃; if the air conditioner is started again and operates for 20 minutes, and then protective shutdown occurs again, T Frequency limiting 、T Frequency reduction The temperature was adjusted to 67-2=65 ℃ and 69-2=67 ℃. If the air conditioner is started again and continuous operation is not carried out for more than 30 minutes, T Frequency limiting 、T Frequency down conversion The temperature was returned to 70 ℃ and 72 ℃.
The present embodiment also proposes a control device of an air conditioner, which includes one or more processors and a non-transitory computer-readable storage medium storing program instructions, when the one or more processors execute the program instructions, the one or more processors are configured to implement the method according to any one of the above.
As shown in a block diagram of the control device in fig. 2, the control device of the present embodiment includes a temperature obtaining module, a data storage module, a data processing module, a compressor frequency control module, and a unit state obtaining module.
Wherein: the temperature acquisition module acquires temperature values (such as a compressor, a heat exchanger and the like) of the heat dissipation part and sends the acquired temperature values to the data processing module; the data storage module stores data such as dehumidifying frequency reduction temperature points, frequency limit temperature points, shutdown protection temperature points, corrected frequency reduction temperature points, frequency limit temperature points, corrected values and the like, and sends the stored data to the data processing module. The unit state acquisition module acquires the on-off state of the air conditioning unit, the continuous operation time of the compressor during the last shutdown protection, the shutdown protection times and the like, and transmits the acquired data to the data processing module. The data processing module processes all acquired data information, namely corrects the frequency limiting temperature point and the frequency reducing temperature point, and sends the processed data information to the compressor frequency control module, and the compressor frequency control module controls the frequency of the compressor according to the information sent by the data processing module.
This embodiment also proposes a non-transitory computer-readable storage medium on which program instructions are stored, which when executed by one or more processors are adapted to implement the method according to any of the above.
The present embodiment also proposes an air conditioner that employs the method of any one of the above, or that includes the control device of the above, or that has the non-transitory computer-readable storage medium of the above.
Although the present invention has been described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the present invention.
Claims (8)
1. An adjustment method for shutdown protection of an air conditioner, the adjustment method comprising:
the detected temperature of the heat dissipating part is T Powder medicine ，T Frequency limiting 、T Frequency down conversion 、T Shutdown Is a preset temperature point and T Frequency limiting ＜T Frequency down conversion ＜T Shutdown N is the frequency reduction times, and n is more than or equal to 1; when the shutdown times N are more than or equal to 2, N = N-1;
when T is Powder medicine ＜T Frequency limiting In time, the air conditioning unit operates according to normal frequency requirements; when T is Frequency limiting ≤T Powder medicine ＜T Frequency reduction When the air conditioner unit is started, the air conditioner unit is prohibited from running in an up-conversion mode; when T is Frequency reduction ≤T Powder medicine ＜T Shutdown When the frequency of the air conditioning unit is reduced, the air conditioning unit is controlled to operate at a reduced frequency; when T is Powder medicine ≥T Shutdown When the compressor is started, the compressor stops running;
restarting the air conditioner, wherein the restarting is after the Nth shutdown protection;
obtaining the shutdown protection times N and the running time t of the compressor between the N-1 shutdown and the Nth shutdown comp And a frequency-limited temperature point T before the Nth shutdown protection Frequency limit (n-1) And a temperature point T of frequency reduction Frequency reduction (n-1) T1 is a set duration;
the factory preset dehumidification frequency limiting temperature point and initial frequency reduction temperature point of the air conditioning unit are T Frequency limited 0 、T Down-conversion of 0 The protection point of the air conditioner is T Frequency limiting 、T Frequency reduction ，
Step 1: when the n is =1, the control signal is transmitted,
if t comp If < T1, then T Frequency limiting 1 ＝T Frequency limited 0 -△T11，T Frequency reduction 1 ＝T Down-conversion of 0 -△T21；
If t comp Not less than T1, then T Frequency limiting 1 ＝T Frequency limited 0 -△T11’，T Frequency down 1 ＝T Down-conversion of 0 -△T21’；
And 2, step: when n =2, then T Frequency limiting 、T Frequency reduction The following adjustment is performed on the basis of the step 1,
if t comp If < T1, then T Frequency limiting 2 ＝T Frequency limiting 1 -△T21，T Frequency reduction 2 ＝T Frequency down 1 -△T22，
If t comp Not less than T1, then T Frequency limiting 2 ＝T Frequency limiting 1 -△T21’，T Frequency reduction 2 ＝T Frequency down 1 -△T22’；
And step 3: when n is>When 3 is above, then T Frequency limiting 、T Frequency reduction Adjusting on the basis of the step n-1;
when t is comp T < T1, T Limiting frequency n ＝T Frequency limiting (n-1) -△T n1 ,T Frequency reduction n ＝T Frequency reduction (n-1) -△T n2 ；
When t is comp At more than or equal to T1, T Limiting frequency n ＝T Frequency limit (n-1) -△T n1 ’,T Frequency reduction n ＝T Frequency reduction (n-1) -△T n2 ’；
△T11、△T11’、△T21、△T21’、△T n1 And Δ T n1 ' is a correction value of the frequency-limiting temperature point, Δ T21', ' Δ T22', ' Δ T n2 And Δ T n2 ' is a correction value of the temperature point of the down conversion; t is Frequency limiting 1 、T Frequency limiting 2 And T Limiting frequency n For adjusted frequency-limited temperature point, T Frequency reduction 1 、T Frequency reduction 2 And T Frequency reduction n Is the adjusted underclocking temperature point;
and regulating and controlling the air conditioner according to the corrected frequency limiting temperature point and the corrected frequency reducing temperature point, wherein N is an integer greater than or equal to 1.
2. The adjusting method of shutdown protection for air conditioner according to claim 1, wherein after the frequency limiting temperature point and the frequency reducing temperature point are corrected, the air conditioning unit is not shutdown protected during the continuous operation time T2, and the frequency limiting temperature point and the frequency reducing temperature point are restored to the original frequency limiting temperature point T Frequency limited 0 And a temperature point T of frequency reduction Down-conversion of 0 Wherein t1 is less than t2;
and/or the frequency limiting temperature point T is subjected to frequency limiting after a user shutdown instruction is received Limiting frequency n And a temperature point T of frequency reduction Limiting frequency n Is restored to the initial frequency-limiting temperature point T Frequency limited 0 And a temperature point T of frequency reduction Down-conversion of 0 。
3. The adjusting method for shutdown protection of an air conditioner according to claim 1, wherein the shutdown protection times N are cleared after t3 time of continuous operation of the air conditioning unit or cleared during shutdown, wherein t1 is less than t3.
4. An adjusting method for shutdown protection of an air conditioner according to claim 1, characterized in that Δ T n1 ＝△T n2 ；
And/or, deltaT n1 ’＝△T n2 ’。
5. The method as claimed in claim 1, wherein the temperature range of the corrected value of the frequency-limiting temperature point and/or the frequency-reducing temperature point is as follows: 1-3 ℃.
6. A control apparatus of an air conditioner, comprising one or more processors and a non-transitory computer readable storage medium storing program instructions, the one or more processors being configured to implement the method according to any one of claims 1 to 5 when the one or more processors execute the program instructions.
7. A non-transitory computer readable storage medium having stored thereon program instructions which, when executed by one or more processors, are for implementing the method of any one of claims 1-5.
8. An air conditioner, characterized in that it employs the method of any one of claims 1-5, or comprises the control device of claim 6, or has a non-transitory computer-readable storage medium according to claim 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111613885.9A CN114234358B (en) | 2021-12-27 | 2021-12-27 | Air conditioner shutdown protection adjusting method and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111613885.9A CN114234358B (en) | 2021-12-27 | 2021-12-27 | Air conditioner shutdown protection adjusting method and air conditioner |
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| Publication Number | Publication Date |
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| CN115164354B (en) * | 2022-07-08 | 2023-09-22 | 宁波奥克斯电气股份有限公司 | Down-conversion protection control method and device, air conditioner and storage medium |
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