CN106322639B - The delivery temperature frequency limit of air conditioner protects control method - Google Patents
The delivery temperature frequency limit of air conditioner protects control method Download PDFInfo
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- CN106322639B CN106322639B CN201510386188.2A CN201510386188A CN106322639B CN 106322639 B CN106322639 B CN 106322639B CN 201510386188 A CN201510386188 A CN 201510386188A CN 106322639 B CN106322639 B CN 106322639B
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Abstract
The present invention provides a kind of delivery temperature frequency limit protection control method of air conditioner, comprising: setting gas exhaust inspecting temperature, quick frequency reducing temperature, frequency decreasing value and the first regulating time, the gas exhaust inspecting temperature are greater than the quick frequency reducing temperature；The delivery temperature of real-time detection air conditioner, and the delivery temperature and the gas exhaust inspecting temperature；Compare the delivery temperature and the quick frequency reducing temperature.The delivery temperature frequency limit of air conditioner provided by the invention protects control method; pass through the comparison of temperature and time; equipped with buffer time; effectively avoid the wide fluctuations of temperature or power (lifting is excessive); user's comfort is promoted, while realization fast and stable, quick changes in temperature; outdoor noise is improved, the service life of compressor is extended.
Description
Technical field
The invention belongs to the delivery temperature frequency limits of air-conditioning equipment control field more particularly to a kind of air conditioner to protect controlling party
Method.
Background technique
Air conditioner during high loaded process, when delivery temperature be more than frequency limit temperature control point when, can to compressor into
The decline of row frequency reducing oncoming force delivery temperature, after delivery temperature declines to a certain extent, frequency limit control can release again, compress after releasing
Machine operating frequency can increase again, and many control programs do not account for the hysteresis quality and Retarder theory of temperature change now, so that
Frequency limit control is frequent to be entered and releases, and leaving air temp is caused, and system pressure, current power fluctuation is big, influences user using relaxing
Adaptive and compressor service life.
Summary of the invention
Therefore, the present invention provides a kind of delivery temperature of the air conditioner of wide fluctuations for effectively avoiding temperature or power
Frequency limit protects control method.
A kind of delivery temperature frequency limit protection control method of air conditioner, comprising:
Set gas exhaust inspecting temperature, quick frequency reducing temperature, frequency decreasing value and the first regulating time, the gas exhaust inspecting temperature
Degree is greater than the quick frequency reducing temperature；
The delivery temperature of real-time detection air conditioner, and the delivery temperature and the gas exhaust inspecting temperature；
If the delivery temperature is greater than the gas exhaust inspecting temperature, the air conditioner is reduced according to the frequency decreasing value
Compressor frequency, and the compressor frequency reduction after keep the first regulating time after, measure the air conditioner again
Delivery temperature；
Compare the delivery temperature and the quick frequency reducing temperature；
If the delivery temperature is greater than the quick frequency reducing temperature, the air conditioner is reduced according to the frequency decreasing value
Compressor frequency, and the compressor frequency reduction after keep the first regulating time after, air conditioner described in replication
Delivery temperature and compared with the quick frequency reducing temperature, until the delivery temperature is not more than the quick frequency reducing temperature.
Further include: in the delivery temperature no more than after the quick frequency reducing temperature:
Setpoint frequency keeps temperature, and the frequency keeps temperature to be less than the quick frequency reducing temperature；
Compare the delivery temperature and the frequency keeps temperature；
If the delivery temperature is greater than the frequency and keeps temperature, described in the half reduction according to the frequency decreasing value
The compressor frequency of air conditioner, and after keeping the first regulating time after the compressor frequency reduces, sky described in replication
Compared with adjusting the delivery temperature of device and keeping temperature with the frequency, until the delivery temperature keeps temperature no more than the frequency
Degree.
Further include: after the delivery temperature keeps temperature no more than the frequency:
Frequency limit solution controlling temperature is set, the frequency limit solution controlling temperature is less than the frequency and keeps temperature；
Compare the delivery temperature and the frequency limit solution controlling temperature；
If the delivery temperature is greater than the frequency limit solution controlling temperature, keep the compressor frequency of the air conditioner constant；
If the delivery temperature is not more than the frequency limit solution controlling temperature, the normal control mode of the air conditioner is carried out.
Further include: before the delivery temperature and the gas exhaust inspecting temperature:
Setting limit temperature and the second regulating time, the limiting temperature are greater than the gas exhaust inspecting temperature；
Compare the delivery temperature and the limiting temperature；
If the delivery temperature is greater than the limiting temperature, the pole that the delivery temperature is greater than the limiting temperature is measured
Between in limited time, the limit time and second regulating time；
If the limit time is greater than second regulating time, compressor shutdown.
If the limit time is less than second regulating time, described in twice of reduction according to the frequency decreasing value
The compressor frequency of air conditioner, and delivery temperature described in replication, until the delivery temperature is less than the gas exhaust inspecting temperature
Degree.
The limiting temperature is 100 DEG C, and the gas exhaust inspecting temperature is 90 DEG C.
First regulating time is 10 seconds.
Second regulating time is 20 seconds.
The delivery temperature frequency limit of air conditioner provided by the invention protects control method, by the comparison of temperature and time, if
There is buffer time, effectively avoids the wide fluctuations (lifting is excessive) of temperature or power, user's comfort is promoted, in reality
Existing fast and stable while quick changes in temperature, improves outdoor noise, extends the service life of compressor.
Figure of description
Fig. 1 is the schematic diagram one of the delivery temperature frequency limit protection control method of air conditioner provided by the invention；
Fig. 2 is the schematic diagram two of the delivery temperature frequency limit protection control method of air conditioner provided by the invention；
Fig. 3 is the schematic diagram three of the delivery temperature frequency limit protection control method of air conditioner provided by the invention；
Fig. 4 is the schematic diagram four of the delivery temperature frequency limit protection control method of air conditioner provided by the invention.
Specific embodiment
Below by specific embodiment and in conjunction with attached drawing, the present invention will be described in detail.
The delivery temperature frequency limit of air conditioner as shown in Figure 1 protects control method, comprising:
S11 sets gas exhaust inspecting temperature B, quick frequency reducing temperature C1, frequency decreasing value X and the first regulating time T3, described
Gas exhaust inspecting temperature B is greater than the quick frequency reducing temperature C1；
The delivery temperature t of S12 real-time detection air conditioner, and the delivery temperature t and gas exhaust inspecting temperature B；
If the S13 delivery temperature t is greater than the gas exhaust inspecting temperature B, according to described in frequency decreasing value X reduction
The compressor frequency of air conditioner, and after keeping the first regulating time T3 after the compressor frequency reduces, again described in measurement
The delivery temperature t of air conditioner；
The S14 delivery temperature t and quick frequency reducing temperature C1；
If the S15 delivery temperature t is greater than the quick frequency reducing temperature C1, institute is reduced according to the frequency decreasing value X
The compressor frequency of air conditioner is stated, and after keeping the first regulating time T3 after the compressor frequency reduces, replication institute
State the delivery temperature t of air conditioner and compared with the quick frequency reducing temperature C1, until the delivery temperature t no more than it is described quickly
Frequency reducing temperature C1.
Further include: in the delivery temperature t no more than after the quick frequency reducing temperature C1:
S21 setpoint frequency keeps temperature C2, and the frequency keeps temperature C2 to be less than the quick frequency reducing temperature C1；
The S22 delivery temperature t and the frequency keep temperature C2；
If the S23 delivery temperature t, which is greater than the frequency, keeps temperature C2, according to the half of the frequency decreasing value X
The compressor frequency of the air conditioner is reduced, and after keeping the first regulating time T3 after the compressor frequency reduces, is repeated
Compared with measuring the delivery temperature t of the air conditioner and keeping temperature C2 with the frequency, until the delivery temperature t is not more than institute
It states frequency and keeps temperature C2.
Further include: after the delivery temperature t keeps temperature C2 no more than the frequency:
S31 sets frequency limit solution controlling temperature E, and the frequency limit solution controlling temperature E is less than the frequency and keeps temperature C2；
The S32 delivery temperature t and frequency limit solution controlling temperature E；
If the S33 delivery temperature t is greater than the frequency limit solution controlling temperature E, the compressor frequency of the air conditioner is kept
It is constant；
If the S34 delivery temperature t is not more than the frequency limit solution controlling temperature E, the normal control of the air conditioner is carried out
Mode.
Further include: before the delivery temperature t and the gas exhaust inspecting temperature B:
S41 setting limit temperature A and the second regulating time T4, the limiting temperature A are greater than the gas exhaust inspecting temperature B；
S42 the delivery temperature t and the limiting temperature A；
If the S43 delivery temperature t is greater than the limiting temperature A, the delivery temperature t is measured greater than the limit temperature
Spend the limit time T5, the limit time T5 and the second regulating time T4 of A；
If the S44 limit time T5 is greater than the second regulating time T4, compressor shutdown.
If the S51 limit time T5 is less than the second regulating time T4, according to twice of the frequency decreasing value X
The compressor frequency of the air conditioner, and delivery temperature t described in replication are reduced, until the delivery temperature t is less than described
Gas exhaust inspecting temperature B.
The limiting temperature A is 100 DEG C, and the gas exhaust inspecting temperature B is 90 DEG C.
The first regulating time T3 is 10 seconds.
The second regulating time T4 is 20 seconds.
Embodiment
The limiting temperature A is set as 100 DEG C, the gas exhaust inspecting temperature B is 90 DEG C, and the quick frequency reducing temperature C1 is
75 DEG C, it is 60 DEG C that the frequency, which keeps temperature C2, and the frequency limit solution controlling temperature E is 50 DEG C, and the frequency decreasing value X is 10Hz,
First regulating time is that T3 is 10 seconds, and second regulating time is that T4 is 20 seconds；
The delivery temperature of the actually measured air conditioner is 93 DEG C, is greater than 90 DEG C of the gas exhaust inspecting temperature and is less than described
100 DEG C of limiting temperature；
According to the frequency decreasing value, i.e. 10Hz reduces the compressor frequency of the air conditioner, and in the compressor frequency
Rate keeps the first regulating time after 10 seconds after reducing, and the delivery temperature t for measuring the air conditioner again is 87 DEG C fast greater than described
Prompt drop frequency temperature C1 is 75 DEG C；
According to the frequency decreasing value, i.e. 10Hz, after compressor frequency 3 times for reducing the air conditioner, the air conditioner
Delivery temperature be 74 DEG C be less than the quick frequency reducing temperature C1 and be greater than the frequency keep temperature C2；
According to the half of the frequency decreasing value, i.e. 5Hz, after compressor frequency 2 times for reducing the air conditioner, the sky
It adjusts the delivery temperature of device to be 57 DEG C to be less than frequency holding temperature C2 and be greater than the frequency limit solution controlling temperature E, keeps the pressure
Contracting unit frequency is constant.
The delivery temperature frequency limit of air conditioner provided by the invention protects control method, by the comparison of temperature and time, if
There is buffer time, effectively avoids the wide fluctuations (lifting is excessive) of temperature or power, user's comfort is promoted, in reality
Existing fast and stable while quick changes in temperature, improves outdoor noise, extends the service life of compressor.
Only the preferred embodiments of the present invention have been described above, it is noted that for the ordinary skill of the art
For personnel, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (7)
1. a kind of delivery temperature frequency limit of air conditioner protects control method, it is characterised in that: include:
It is big to set gas exhaust inspecting temperature, quick frequency reducing temperature, frequency decreasing value and the first regulating time, the gas exhaust inspecting temperature
In the quick frequency reducing temperature；
The delivery temperature of real-time detection air conditioner, and the delivery temperature and the gas exhaust inspecting temperature；
If the delivery temperature is greater than the gas exhaust inspecting temperature, the pressure of the air conditioner is reduced according to the frequency decreasing value
Contracting unit frequency, and after keeping the first regulating time after the compressor frequency reduces, the exhaust of the air conditioner is measured again
Temperature；
Compare the delivery temperature and the quick frequency reducing temperature；
If the delivery temperature is greater than the quick frequency reducing temperature, the pressure of the air conditioner is reduced according to the frequency decreasing value
Contracting unit frequency, and after keeping the first regulating time after the compressor frequency reduces, the exhaust of air conditioner described in replication
Temperature and compared with the quick frequency reducing temperature, until the delivery temperature is not more than the quick frequency reducing temperature；
Further include: in the delivery temperature no more than after the quick frequency reducing temperature:
Setpoint frequency keeps temperature, and the frequency keeps temperature to be less than the quick frequency reducing temperature；
Compare the delivery temperature and the frequency keeps temperature；
If the delivery temperature, which is greater than the frequency, keeps temperature, the air-conditioning is reduced according to the half of the frequency decreasing value
The compressor frequency of device, and after keeping the first regulating time after the compressor frequency reduces, air conditioner described in replication
Delivery temperature and with the frequency keep temperature compared with, until the delivery temperature no more than the frequency keep temperature.
2. delivery temperature frequency limit according to claim 1 protects control method, it is characterised in that: further include: in the row
Temperature degree is kept no more than the frequency after temperature:
Frequency limit solution controlling temperature is set, the frequency limit solution controlling temperature is less than the frequency and keeps temperature；
Compare the delivery temperature and the frequency limit solution controlling temperature；
If the delivery temperature is greater than the frequency limit solution controlling temperature, keep the compressor frequency of the air conditioner constant；
If the delivery temperature is not more than the frequency limit solution controlling temperature, the normal control mode of the air conditioner is carried out.
3. delivery temperature frequency limit according to claim 1 protects control method, it is characterised in that: further include: comparing
Before stating delivery temperature and the gas exhaust inspecting temperature:
Setting limit temperature and the second regulating time, the limiting temperature are greater than the gas exhaust inspecting temperature；
Compare the delivery temperature and the limiting temperature；
If the delivery temperature is greater than the limiting temperature, when measuring the limit of the delivery temperature greater than the limiting temperature
Between, the limit time and second regulating time；
If the limit time is greater than second regulating time, compressor shutdown.
4. delivery temperature frequency limit according to claim 3 protects control method, it is characterised in that: if the limit time is small
In second regulating time, then the compressor frequency of the air conditioner is reduced according to twice of the frequency decreasing value, laid equal stress on
Repetition measurement determines the delivery temperature, until the delivery temperature is less than the gas exhaust inspecting temperature.
5. delivery temperature frequency limit according to claim 3 protects control method, it is characterised in that: the limiting temperature is
100 DEG C, the gas exhaust inspecting temperature is 90 DEG C.
6. delivery temperature frequency limit according to claim 1 protects control method, it is characterised in that: first regulating time
It is 10 seconds.
7. delivery temperature frequency limit according to claim 3 protects control method, it is characterised in that: second regulating time
It is 20 seconds.
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107036256B (en) * | 2017-05-31 | 2019-06-11 | 广东美的制冷设备有限公司 | The control method of delivery temperature, the control device of delivery temperature and air conditioner |
| CN107940694A (en) * | 2017-11-16 | 2018-04-20 | 珠海格力电器股份有限公司 | The exhaust protection control method and system of a kind of air conditioner |
| CN109405186B (en) * | 2018-06-21 | 2021-07-30 | 杭州先途电子有限公司 | Setting method of initial operating frequency, variable frequency controller and variable frequency air conditioner |
| CN109405187B (en) * | 2018-06-21 | 2021-05-28 | 杭州先途电子有限公司 | Control method and variable frequency controller |
| CN109099636B (en) * | 2018-07-23 | 2021-04-20 | 海尔智家股份有限公司 | Refrigerator and compressor frequency control method thereof |
| CN110595015B (en) * | 2019-09-25 | 2020-12-11 | 珠海格力电器股份有限公司 | Adjusting method and device of frequency conversion equipment |
| CN110905791B (en) * | 2019-11-20 | 2020-10-02 | 珠海格力电器股份有限公司 | Compressor frequency control method, device and equipment |
| CN111380185B (en) * | 2020-03-27 | 2021-10-26 | 广东美的制冷设备有限公司 | Compressor exhaust temperature frequency limiting control method, air conditioner and readable storage medium |
| CN112178978B (en) * | 2020-10-15 | 2022-04-12 | 广东纽恩泰新能源科技发展有限公司 | Protection control method for overhigh exhaust temperature of variable frequency heat pump |
| CN112611089B (en) * | 2020-12-21 | 2022-05-20 | 苏州金俊智能科技有限公司 | Control method for preventing air conditioner from repeatedly exhausting protection |
| CN113654226B (en) * | 2021-08-13 | 2023-02-17 | 青岛海尔空调器有限总公司 | Method and device for controlling frequency stability of air conditioner compressor and electronic equipment |
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