CN107421055A - Convertible frequency air-conditioner, halt control method and computer-readable recording medium - Google Patents
Convertible frequency air-conditioner, halt control method and computer-readable recording medium Download PDFInfo
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- CN107421055A CN107421055A CN201710310412.9A CN201710310412A CN107421055A CN 107421055 A CN107421055 A CN 107421055A CN 201710310412 A CN201710310412 A CN 201710310412A CN 107421055 A CN107421055 A CN 107421055A
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Abstract
The present invention discloses a kind of halt control method of convertible frequency air-conditioner, and the halt control method of the convertible frequency air-conditioner comprises the following steps：The convertible frequency air-conditioner reduces the running frequency of compressor until reaching preset frequency when receiving stopping signal；The evaporating pressure and condensing pressure of the compressor are obtained, and calculates the difference between the evaporating pressure and condensing pressure, obtains pressure difference value；When the pressure difference value is less than predetermined shutdown threshold pressure differential, control the compressor out of service.Invention additionally discloses a kind of convertible frequency air-conditioner and computer-readable recording medium.The present invention can reduce the service life matched somebody with somebody tube vibration and stress, extend pipe arrangement of the compressor of convertible frequency air-conditioner, to improve the stability of a system of convertible frequency air-conditioner.
Description
Technical field
The present invention relates to air-conditioning technical field, more particularly to a kind of convertible frequency air-conditioner, halt control method and computer-readable
Storage medium.
Background technology
In frequency-conversion air-conditioning system, refrigerant pressure is larger when high frequency is run, now pipeline certain deformation, if directly stopping
Only compressor, refrigerant can stop rapidly flowing, and refrigerant pressure is lost suddenly therewith, and causes pipeline deformation to rebound and shake immediately
Swing, so as to cause the excessive with tube vibration and stress of compressor, or even the danger of the disconnected pipe of pipe arrangement be present.Therefore, change how is reduced
Frequency air-conditioning matches somebody with somebody tube vibration and stress in the compressor for shutting down the moment, turns into urgent problem to be solved.
The content of the invention
The main object of the present invention is to provide a kind of convertible frequency air-conditioner, halt control method and computer-readable recording medium,
It is intended to reduce the service life matched somebody with somebody tube vibration and stress, extend pipe arrangement of the compressor of convertible frequency air-conditioner, to improve convertible frequency air-conditioner
The stability of a system.
To achieve the above object, the halt control method of a kind of convertible frequency air-conditioner proposed by the present invention, comprises the following steps：
The convertible frequency air-conditioner reduces the running frequency of compressor until reaching preset frequency when receiving stopping signal；
The evaporating pressure and condensing pressure of the compressor are obtained, and is calculated between the evaporating pressure and condensing pressure
Difference, obtain pressure difference value；
When the pressure difference value is less than predetermined shutdown threshold pressure differential, control the compressor out of service.
Preferably, the convertible frequency air-conditioner is when receiving stopping signal, enters one the step of the running frequency for reducing compressor
Step includes：
The convertible frequency air-conditioner controls the compressor to carry out frequency reducing with constant rate of speed when receiving stopping signal, until
Reach minimum operating frequency.
Preferably, the convertible frequency air-conditioner is when receiving stopping signal, enters one the step of the running frequency for reducing compressor
Step includes：
The convertible frequency air-conditioner obtains the current operation frequency of the compressor when receiving stopping signal；
Judge the frequency separation residing for the current operation frequency；
When the frequency separation residing for the current operation frequency is the first frequency range, the compressor is controlled with corresponding
One reduction of speed frequency is run；
When the frequency separation residing for the current operation frequency is the second frequency range, the compressor is controlled with corresponding
Two reduction of speed frequencies are run, until reaching minimum operating frequency.
Preferably, first band limits is more than second band limits, and the second reduction of speed frequency is less than described
First reduction of speed frequency.
Preferably, the halt control method of the convertible frequency air-conditioner also includes：
Obtain the run time that the compressor is run with the minimum operating frequency；
When the run time reaches default run time threshold value, control the compressor out of service.
Preferably, the halt control method of the convertible frequency air-conditioner also includes：
The convertible frequency air-conditioner obtains the frequency reducing time that the compressor carries out frequency reducing operation when receiving stopping signal；
When the frequency reducing time reaching default frequency reducing time threshold, control the compressor out of service.
To achieve the above object, the present invention also provides a kind of convertible frequency air-conditioner, and the convertible frequency air-conditioner includes：
Shut down control program, the shutdown controlling party shut down control program and be arranged for carrying out convertible frequency air-conditioner as described above
The step of method.
To achieve the above object, the present invention also provides a kind of computer-readable recording medium, the computer-readable storage
The shutdown control program of convertible frequency air-conditioner is stored with medium, the shutdown control program of the convertible frequency air-conditioner is executed by processor realization
The step of halt control method of convertible frequency air-conditioner as described above.
Convertible frequency air-conditioner, halt control method and computer-readable recording medium provided by the invention, by the frequency conversion
When air-conditioning receives stopping signal, the running frequency of compressor is reduced until reaching preset frequency, then obtains the compressor
Evaporating pressure and condensing pressure, and calculate the difference between the evaporating pressure and condensing pressure, pressure difference value obtained, in institute
When stating pressure difference value less than predetermined shutdown threshold pressure differential, control the compressor out of service.So, by reducing the compression
To preset frequency, and when the pressure difference value of calculating is less than predetermined shutdown threshold pressure differential, control compressor stops the running frequency of machine
Machine, it is possible to reduce the service life matched somebody with somebody tube vibration and stress, extend pipe arrangement of the compressor of convertible frequency air-conditioner, so as to improve frequency conversion sky
The stability of a system of tune.
Brief description of the drawings
Fig. 1 is the convertible frequency air-conditioner structural representation for the hardware running environment that scheme of the embodiment of the present invention is related to；
Fig. 2 is the schematic flow sheet of the embodiment of halt control method one of convertible frequency air-conditioner of the present invention；
Fig. 3 is that step convertible frequency air-conditioner when receiving stopping signal, reduces the running frequency of compressor until reaching in Fig. 2
The refinement schematic flow sheet of preset frequency；
Fig. 4 is convertible frequency air-conditioner of the present invention according to pressure difference value and the predetermined relation for shutting down threshold pressure differential, it is determined whether control
The specific schematic diagram of compressor shutdown；
Fig. 5 is the schematic flow sheet of another embodiment of halt control method of convertible frequency air-conditioner of the present invention；
Fig. 6 is the run time that convertible frequency air-conditioner of the present invention is run according to compressor with preset frequency and preset time threshold
Relation, it is determined whether control the specific schematic diagram of compressor shutdown；
Fig. 7 is the schematic flow sheet of the halt control method another embodiment of convertible frequency air-conditioner of the present invention；
Fig. 8 is that convertible frequency air-conditioner of the present invention carries out the frequency reducing time of frequency reducing operation and default frequency reducing time threshold according to compressor
Relation, it is determined whether control the specific schematic diagram of compressor shutdown.
The realization, functional characteristics and advantage of the object of the invention will be described further referring to the drawings in conjunction with the embodiments.
Embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
The convertible frequency air-conditioner of the present invention, as shown in figure 1, the convertible frequency air-conditioner includes：Processor 1001, such as CPU, Yong Hujie
Mouth 1002, memory 1003, communication bus 1004.Wherein, communication bus 1004 is used to realize that the connection between these components is led to
Letter.User interface 1002 can include display screen (Display), input block such as remote control.Memory 1003 can be high
Fast RAM memory or stable memory (non-volatile memory), such as magnetic disk storage.Memory
The 1003 optional storage devices that can also be independently of aforementioned processor 1001.
The convertible frequency air-conditioner can also include indoor set, outdoor unit, the compressor in outdoor unit, in addition to various use
In sensor of the parameters such as detection temperature, pressure, humidity, cold medium flux etc..
It will be understood by those skilled in the art that the convertible frequency air-conditioner structure shown in Fig. 1 does not form the limit to convertible frequency air-conditioner
It is fixed, it can include than illustrating more or less parts, either combine some parts or different parts arrangement.
As shown in figure 1, it can lead to as in a kind of memory 1003 of computer-readable storage medium including operating system, network
Believe the shutdown control program of module, Subscriber Interface Module SIM and convertible frequency air-conditioner.
In the convertible frequency air-conditioner shown in Fig. 1, user interface 1002 be mainly used in receive user by touch display screen or
Input block input instruction triggers user instruction, such as freezes or heats；And processor 1001 can be used for calling memory
The shutdown control program of the convertible frequency air-conditioner stored in 1003, and perform following operate：The convertible frequency air-conditioner is receiving shutdown letter
Number when, reduce the running frequency of compressor until reach preset frequency；
The evaporating pressure and condensing pressure of the compressor are obtained, and is calculated between the evaporating pressure and condensing pressure
Difference, obtain pressure difference value；
When the pressure difference value is less than predetermined shutdown threshold pressure differential, control the compressor out of service.
Further, processor 1001 can call the shutdown control program stored in memory 1003, also perform following
Operation：
The convertible frequency air-conditioner controls the compressor to carry out frequency reducing with constant rate of speed when receiving stopping signal, until
Reach minimum operating frequency.
Further, processor 1001 can call the shutdown control program stored in memory 1003, also perform following
Operation：
The convertible frequency air-conditioner obtains the current operation frequency of the compressor when receiving stopping signal；
Judge the frequency separation residing for the current operation frequency；
When the frequency separation residing for the current operation frequency is the first frequency range, the compressor is controlled with corresponding
One reduction of speed frequency is run；
When the frequency separation residing for the current operation frequency is the second frequency range, the compressor is controlled with corresponding
Two reduction of speed frequencies are run, until reaching minimum operating frequency.
Further, processor 1001 can call the shutdown control program stored in memory 1003, also perform following
Operation：
First band limits is more than second band limits, and the second reduction of speed frequency is less than first reduction of speed
Frequency.
Further, processor 1001 can call the shutdown control program stored in memory 1003, also perform following
Operation：
Obtain the run time that the compressor is run with the minimum operating frequency；
When the run time reaches default run time threshold value, control the compressor out of service.
Further, processor 1001 can call the shutdown control program stored in memory 1003, also perform following
Operation：
The convertible frequency air-conditioner obtains the frequency reducing time that the compressor carries out frequency reducing operation when receiving stopping signal；
When the frequency reducing time reaching default frequency reducing time threshold, control the compressor out of service.
Reference picture 2, in the first embodiment, the present invention provide a kind of halt control method of convertible frequency air-conditioner, including：
Step S1, described convertible frequency air-conditioner reduces the running frequency of compressor until reaching pre- when receiving stopping signal
Determine frequency；
In the present embodiment, the situation that convertible frequency air-conditioner receives stopping signal mainly passes through remote control or guidance panel including user
And the stopping signal triggered.Because the air-conditioning system in the present invention relates generally to convertible frequency air-conditioner, therefore, the operation frequency of its compressor
Rate can be with dynamic change, and the compressor operated in a high frequency in the embodiment of the present invention mainly for it, when receiving stopping signal,
Operation is adjusted to the running frequency of the compressor of high frequency operation, so as to avoid compressor from directly shutting down, prevents compressor
Pipe arrangement the phenomenon of disconnected pipe occurs.
In the present embodiment, compressor can such as be controlled with constant including a variety of by reducing the mode of the running frequency of compressor
Speed frequency reducing until reach preset frequency；Or speed frequency reducing of the control compressor to change has until reaching preset frequency
Body can be first with larger speed frequency reducing, after with less speed frequency reducing until reaching preset frequency.In addition, with variant speed
The run time of rate frequency reducing can be according to being actually needed reasonable setting.
In the present embodiment, preset frequency is preferably set to the minimum operation frequency that the convertible frequency air-conditioner corresponds to the compressor of model
Rate, can also be other frequencies in other embodiments certainly, such as can be according to being actually needed, choosing the preset frequency is
A certain frequency values between maximum running frequency and maximum running frequency.
Step S2, the evaporating pressure and condensing pressure of the compressor are obtained, and calculates the evaporating pressure and condensation pressure
Difference between power, obtains pressure difference value；
In the present embodiment, vapor pres- sure can be detected by the pressure sensor for the exhaust ports for being installed on the compressor
Power, condensing pressure is detected by being installed on another pressure sensor at the air entry of the compressor, each pressure sensor will
The pressure value detected is sent to processor, and the difference between the evaporating pressure and condensing pressure is calculated in device for processing
Value, so as to obtain pressure difference value, namely refrigerant pressure.Certainly, in other embodiment, each pressure sensor can also be arranged at
Other rational positions.
Step S3, when the pressure difference value is less than predetermined shutdown threshold pressure differential, control the compressor out of service.
In the present embodiment, match somebody with somebody tube vibration and stress in the compressor for shutting down the moment to reduce convertible frequency air-conditioner, except non-NULL
Adjusting system failure (exception), direct closing method should not be used under normal circumstances, but first gradually frequency reducing is run, until refrigerant pressure
Stop compressor operating when power is smaller again.Therefore, can in real time or the evaporating pressure of compressor described in periodic monitor and condensation press
Power, and the difference between the evaporating pressure and condensing pressure is calculated, pressure difference value is obtained, the pressure difference value is big if monitoring
In or equal to the predetermined shutdown threshold pressure differential such as 0.5MPa, show that now corresponding refrigerant pressure is still larger, also needs to control
The compressor continues to run with preset frequency；If monitoring, the pressure difference value is less than the predetermined shutdown threshold pressure differential, table
Bright now corresponding refrigerant pressure has reached in safe range, therefore the compressor can be controlled out of service.Certainly, other
In embodiment, the predetermined shutdown threshold pressure differential can be rationally set according to being actually needed.
In frequency-conversion air-conditioning system, refrigerant pressure is the pressure differential of condensing pressure and evaporating pressure, thus can be direct
According to the evaporating pressure and condensing pressure of acquisition, the difference between evaporating pressure and condensing pressure is calculated, obtains pressure differential, you can
To shut down moment vibration and stress to control compressor to stop, to reduce according to pressure differential.
The halt control method of convertible frequency air-conditioner provided by the invention, by receiving stopping signal in the convertible frequency air-conditioner
When, the running frequency of compressor is reduced until reaching preset frequency, and the evaporating pressure and condensation for then obtaining the compressor are pressed
Power, and the difference between the evaporating pressure and condensing pressure is calculated, pressure differential is obtained, is less than predetermined shut down in the pressure differential
During threshold pressure differential, control the compressor out of service.So, by reducing the running frequency of the compressor to predetermined frequency
Rate, and when the pressure difference value of calculating is less than predetermined shutdown threshold pressure differential, control compressor shutdown, it is possible to reduce convertible frequency air-conditioner
The service life matched somebody with somebody tube vibration and stress, extend pipe arrangement of compressor, so as to improve the stability of a system of convertible frequency air-conditioner.
In a second embodiment, further comprised based on the first embodiment shown in Fig. 2, the step S1：
The convertible frequency air-conditioner controls the compressor to carry out frequency reducing with constant rate of speed when receiving stopping signal, until
Reach minimum operating frequency.
In the present embodiment, the convertible frequency air-conditioner can control the compressor with constant when receiving stopping signal
Speed carries out frequency reducing, until reaching preset frequency such as minimum operating frequency.Specifically, the convertible frequency air-conditioner can control the pressure
Contracting machine is entered using constant rate of speed such as 1Hz/s (assuming that compressor nominal operating frequency is 90Hz, actual stopping process is 30s~90s)
Row frequency reducing, it is assumed that the compressor is run with 90Hz running frequencies, then the compressor then runs frequency with 80Hz after 10s
Rate is run, and is run after 20s with 70Hz running frequencies, and so on, until reaching minimum operating frequency.
It should be understood that the concrete numerical value for the constant rate of speed enumerated in the present embodiment is not from the limited effect, but can basis
Actual conditions are rationally set.
In the third embodiment, reference picture 3, on the basis of the first embodiment shown in Fig. 2, the step S1 is further
Including：
Step S11, described convertible frequency air-conditioner obtains the current operation frequency of the compressor when receiving stopping signal；
Step S12, the frequency separation residing for the current operation frequency is judged；
In the present embodiment, when the convertible frequency air-conditioner receives stopping signal, the current operation frequency of the compressor is obtained
Rate, and judge the frequency separation residing for the current operation frequency, the frequency separation specifically set can be two, three or three
More than individual, hereafter illustrated exemplified by two.
Step S13, when the frequency separation residing for the current operation frequency is the first frequency range, control the compressor with
Corresponding first reduction of speed frequency operation；
In the present embodiment, it is assumed that the frequency separation includes the first frequency range and the second frequency range, wherein, the frequency of the first frequency range
Value range is all higher than the frequency range values of the second frequency range.If judge the frequency separation residing for the current operation frequency of the compressor
For the first frequency range, show that the running frequency of now compressor is higher, it is thereby possible to select the first relatively large reduction of speed frequency is entered
The quick frequency reducing of row is until the current operation frequency is located at second frequency range.
Step S14, when the frequency separation residing for the current operation frequency is the second frequency range, control the compressor with
Corresponding second reduction of speed frequency operation, until reaching minimum operating frequency.
In the present embodiment, when the frequency separation residing for current operation frequency in the compressor is the second frequency range, show
Now the running frequency of compressor is relatively low, it is thereby possible to select the second relatively small reduction of speed frequency is slowly dropped
Frequency is until reach minimum operating frequency.Namely the second reduction of speed frequency is less than the first reduction of speed frequency, is so due to institute
It is preferable to state compressor stability when high frequency is run, it is thus possible to improve reduction of speed frequency, to shorten downtime；And compressor
Stablize in low-frequency operation relatively poor, especially for single rotor frequency-changeable compressor, its stability is lower, therefore, it is necessary to selects
Relatively small reduction of speed frequency is to improve stability.
In other embodiments, without being divided to frequency separation, but directly according to the current operation of compressor frequency
Rate, it is determined that corresponding reduction of speed frequency.Specifically, can set between the reduction of speed frequency of the compressor and current operation frequency
Relation is positive correlation, namely the current operation frequency is higher, then corresponding reduction of speed frequency is also higher, and this corresponding relation can lead to
Cross calculating to obtain, specifically and can also be not construed as limiting according to tabling look-up to obtain.
, then can be with as shown in figure 4, receive stopping signal when convertible frequency air-conditioner is in normal operation in an instantiation
Carry out frequency-division section and become reduction of speed frequency, (be divided to two sections of change reduction of speed frequencies to reduce the running frequency of the compressor：First reduction of speed frequency
With the second reduction of speed frequency), triggered when the evaporating pressure and condensing pressure of compressor are less than the predetermined shutdown threshold pressure differential
Compressor stop signal, so as to stop the operation of compressor.
In the fourth embodiment, reference picture 5, on the basis of second embodiment, also include after the step S1：
Step S5, the run time that the compressor is run with the minimum operating frequency is obtained；
Step S6, when the run time reaches default run time threshold value, control the compressor out of service.
In the present embodiment, when the running frequency of the compressor minimizes running frequency, in real time or timing acquisition with
The run time of minimum operating frequency operation.If the run time that the compressor is run with minimum operating frequency reaches default fortune
During row time threshold such as 60s, show that now corresponding refrigerant pressure has reached in safe range, therefore the compression can be controlled
Machine is out of service.
It should be understood that by the pressure differential of calculating when less than predetermined shutdown threshold pressure differential, control compressor shutdown operation
Scheme, when the run time with being run by compressor with minimum operating frequency reaches default run time threshold value, control compression
Machine shut down operation scheme can individually perform, as long as namely any scheme meet condition, then control compressor stop
Operation；Two schemes can also be combined and performed, i.e., both consider the pressure differential calculated, it is also considered that compressor is with minimum operation frequency
The time of rate operation, while making a reservation for shut down threshold pressure differential as described in being more than or equal in pressure differential, if compressor is with minimum fortune
The run time of line frequency operation reaches default run time threshold value, then now controls compressor out of service；It is of course also possible to
In turn, when the run time not up to default run time threshold value that compressor is run with minimum operating frequency, if the pressure
Power difference is less than the predetermined shutdown threshold pressure differential, then controls compressor shutdown operation.
, then can be with as shown in fig. 6, receive stopping signal when convertible frequency air-conditioner is in normal operation in an instantiation
Carry out frequency-division section and become reduction of speed frequency, (be divided to two sections of change reduction of speed frequencies to reduce the running frequency of the compressor：First reduction of speed frequency
With the second reduction of speed frequency), when run time that compressor is run with minimum operating frequency reaches default run time threshold value
(pressure differential now calculated is more than or equal to the predetermined shutdown threshold pressure differential) triggers compressor stop signal, so as to stop pressing
The operation of contracting machine.
In the 5th embodiment, reference picture 7, on the basis of first embodiment, also include after the step S1：
Step S7, described convertible frequency air-conditioner obtains the drop that the compressor carries out frequency reducing operation when receiving stopping signal
The frequency time；
In the present embodiment, for the convertible frequency air-conditioner when receiving stopping signal, compressor described in real-time or timing acquisition is just
Carrying out the frequency reducing time of frequency reducing operation, the running frequency that the frequency reducing time includes the compressor is down to preset frequency as most
The run time of low running frequency, and the run time that compressor is run with minimum operating frequency.
Step S8, when the frequency reducing time reaching default frequency reducing time threshold, control the compressor out of service.
In the present embodiment, default frequency reducing time threshold could be arranged to 90s, certainly, in other embodiments, can set
Other reasonable values.Reach default frequency reducing time threshold when the frequency reducing time of the compressor, show now to have completed frequency reducing
Process, and relatively steady state is in, therefore, the compressor can be controlled out of service.
, then can be with as shown in figure 8, receive stopping signal when convertible frequency air-conditioner is in normal operation in an instantiation
Carry out frequency-division section and become reduction of speed frequency, (be divided to two sections of change reduction of speed frequencies to reduce the running frequency of the compressor：First reduction of speed frequency
With the second reduction of speed frequency), until compressor is run with minimum operating frequency, in the process, in real time or pressure described in timing acquisition
The frequency reducing time of contracting machine, if triggering compressor stop signal when the frequency reducing time reaches default frequency reducing time threshold, so as to stop
The only operation of compressor.
In addition, the embodiment of the present invention also provides a kind of convertible frequency air-conditioner and computer-readable recording medium, the frequency conversion is empty
Stealthily substitute and include shutdown control program, the halt control method shut down control program and be arranged for carrying out convertible frequency air-conditioner as described above
The step of.
The shutdown control program of convertible frequency air-conditioner is stored with the computer-readable recording medium, the convertible frequency air-conditioner stops
Following operation is realized when machine control program is executed by processor：
The convertible frequency air-conditioner reduces the running frequency of compressor until reaching preset frequency when receiving stopping signal；
The evaporating pressure and condensing pressure of the compressor are obtained, and is calculated between the evaporating pressure and condensing pressure
Difference, obtain pressure difference value；
When the pressure difference value is less than predetermined shutdown threshold pressure differential, control the compressor out of service.
Further, following operation is also realized when the shutdown control program of the convertible frequency air-conditioner is executed by processor：
The convertible frequency air-conditioner controls the compressor to carry out frequency reducing with constant rate of speed when receiving stopping signal, until
Reach minimum operating frequency.
Further, following operation is also realized when the shutdown control program of the convertible frequency air-conditioner is executed by processor：
The convertible frequency air-conditioner obtains the current operation frequency of the compressor when receiving stopping signal；
Judge the frequency separation residing for the current operation frequency；
When the frequency separation residing for the current operation frequency is the first frequency range, the compressor is controlled with corresponding
One reduction of speed frequency is run；
When the frequency separation residing for the current operation frequency is the second frequency range, the compressor is controlled with corresponding
Two reduction of speed frequencies are run, until reaching minimum operating frequency.
Further, following operation is also realized when the shutdown control program of the convertible frequency air-conditioner is executed by processor：
First band limits is more than second band limits, and the second reduction of speed frequency is less than first reduction of speed
Frequency.
Further, following operation is also realized when the shutdown control program of the convertible frequency air-conditioner is executed by processor：
Obtain the run time that the compressor is run with the minimum operating frequency；
When the run time reaches default run time threshold value, control the compressor out of service.
Further, following operation is also realized when the shutdown control program of the convertible frequency air-conditioner is executed by processor：
The convertible frequency air-conditioner obtains the frequency reducing time that the compressor carries out frequency reducing operation when receiving stopping signal；
When the frequency reducing time reaching default frequency reducing time threshold, control the compressor out of service.
Specific embodiment when the shutdown control program of the convertible frequency air-conditioner is executed by processor is with reference to being described above, herein
Do not remake and repeat.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the scope of the invention, it is every at this
Under the inventive concept of invention, the equivalent structure transformation made using description of the invention and accompanying drawing content, or directly/use indirectly
It is included in other related technical areas in the scope of patent protection of the present invention.
Claims (8)
- A kind of 1. halt control method of convertible frequency air-conditioner, it is characterised in that the halt control method of the convertible frequency air-conditioner include with Lower step：The convertible frequency air-conditioner reduces the running frequency of compressor until reaching preset frequency when receiving stopping signal；The evaporating pressure and condensing pressure of the compressor are obtained, and calculates the difference between the evaporating pressure and condensing pressure Value, obtains pressure difference value；When the pressure difference value is less than predetermined shutdown threshold pressure differential, control the compressor out of service.
- 2. the halt control method of convertible frequency air-conditioner as claimed in claim 1, it is characterised in that the convertible frequency air-conditioner is receiving Further comprise during stopping signal, the step of the running frequency for reducing compressor：The convertible frequency air-conditioner controls the compressor to carry out frequency reducing with constant rate of speed when receiving stopping signal, until reaching Minimum operating frequency.
- 3. the halt control method of convertible frequency air-conditioner as claimed in claim 1, it is characterised in that the convertible frequency air-conditioner is receiving Further comprise during stopping signal, the step of the running frequency for reducing compressor：The convertible frequency air-conditioner obtains the current operation frequency of the compressor when receiving stopping signal；Judge the frequency separation residing for the current operation frequency；When the frequency separation residing for the current operation frequency is the first frequency range, the compressor is controlled with the corresponding first drop Fast frequency operation；When the frequency separation residing for the current operation frequency is the second frequency range, the compressor is controlled with the corresponding second drop Fast frequency operation, until reaching minimum operating frequency.
- 4. the halt control method of convertible frequency air-conditioner as claimed in claim 3, it is characterised in that first band limits is more than Second band limits, the second reduction of speed frequency are less than the first reduction of speed frequency.
- 5. the halt control method of convertible frequency air-conditioner as claimed in claim 2 or claim 3, it is characterised in that the convertible frequency air-conditioner stops Machine control method also includes：Obtain the run time that the compressor is run with the minimum operating frequency；When the run time reaches default run time threshold value, control the compressor out of service.
- 6. the halt control method of convertible frequency air-conditioner as claimed in claim 1, it is characterised in that the shutdown control of the convertible frequency air-conditioner Method processed also includes：The convertible frequency air-conditioner obtains the frequency reducing time that the compressor carries out frequency reducing operation when receiving stopping signal；When the frequency reducing time reaching default frequency reducing time threshold, control the compressor out of service.
- 7. a kind of convertible frequency air-conditioner, it is characterised in that the convertible frequency air-conditioner includes：Control program is shut down, the frequency conversion that the shutdown control program is arranged for carrying out as any one of claim 1 to 6 is empty The step of halt control method of tune.
- 8. a kind of computer-readable recording medium, it is characterised in that frequency conversion sky is stored with the computer-readable recording medium The shutdown control program of tune, the shutdown control program of the convertible frequency air-conditioner, which is executed by processor in realization such as claim 1 to 6, appoints The step of halt control method of convertible frequency air-conditioner described in one.
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| CN109406042A (en) * | 2018-10-24 | 2019-03-01 | 四川长虹空调有限公司 | Transducer air conditioning pressure data approximating method |
| CN113465098A (en) * | 2021-05-21 | 2021-10-01 | 宁波奥克斯电气股份有限公司 | Control method and device for optimizing shutdown airflow sound of compressor and air conditioner |
| CN114992815A (en) * | 2022-06-20 | 2022-09-02 | 宁波奥克斯电气股份有限公司 | Air conditioner, control method and device thereof and readable storage medium |
| CN115451622A (en) * | 2022-08-23 | 2022-12-09 | 青岛海尔空调电子有限公司 | Method and device for fault detection, drying system and storage medium |
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| CN113465098A (en) * | 2021-05-21 | 2021-10-01 | 宁波奥克斯电气股份有限公司 | Control method and device for optimizing shutdown airflow sound of compressor and air conditioner |
| CN114992815A (en) * | 2022-06-20 | 2022-09-02 | 宁波奥克斯电气股份有限公司 | Air conditioner, control method and device thereof and readable storage medium |
| CN115451622A (en) * | 2022-08-23 | 2022-12-09 | 青岛海尔空调电子有限公司 | Method and device for fault detection, drying system and storage medium |
| CN115451622B (en) * | 2022-08-23 | 2024-02-23 | 青岛海尔空调电子有限公司 | Method and device for fault detection, drying system and storage medium |
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