CN107477778B - Air-conditioning heating lacks fluorine protection and prevents the control method of high frequent overload protection - Google Patents
Air-conditioning heating lacks fluorine protection and prevents the control method of high frequent overload protection Download PDFInfo
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- CN107477778B CN107477778B CN201710684171.4A CN201710684171A CN107477778B CN 107477778 B CN107477778 B CN 107477778B CN 201710684171 A CN201710684171 A CN 201710684171A CN 107477778 B CN107477778 B CN 107477778B
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- air
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- compressor
- control method
- conditioning
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
Abstract
Fluorine protection is lacked the present invention relates to a kind of air-conditioning heating and prevents the control method of high frequent overload protection; overload of compressor and the protection of scarce fluorine can be effectively distinguished by the control method; and an overload protection is occurred after a period of time for compressor; air-conditioning can continue to run; air-conditioner set will not report disorderly closedown immediately; and the experience of user is influenced, only disorderly closedown and irrecoverable is just reported after overloading number and being more than certain amount；It in addition, there is continuous over loading in the air-conditioner set short time, can protect in time, avoid damaging compressor since high frequent is overloaded.
Description
Technical field
The present invention relates to field of air conditioning, and in particular to a kind of air-conditioning heating lacks fluorine protection and prevents high frequent overload from protecting
The control method of shield.
Background technique
A kind of household electrical appliance that air-conditioning is adjusted as room temperature, are increasingly liked by people.Air conditioner protection pressure
The measure of contracting machine: it is provided with scarce fluorine protection control logic in the case where cold medium shortage, compressor is avoided to be chronically at high temperature fortune
Row；It leans on compressor to carry overload protective device under normal circumstances in refrigerant to be protected, compressor coil is prevented to be chronically at high temperature
Longtime running under operation or abnormal voltage.
Currently, lack fluorine protection control method: under heating mode, compressor continuous service for a period of time after, it is n seconds continuous in
It detects that inner disc temperature subtracts room temperature temperature difference, if difference is less than certain value, then judges that scarce fluorine is reported to protect, report after lacking fluorine protection
Air conditioner shut down and it is irrecoverable, need to generally power off could eliminate failure, as Patent No. CN200910099237.9 (apply public affairs
Chinese patent application " in the air conditioner judgment method of leakage of refrigerant " of the cloth number for CN101566517A), this guard method
There is a problem of following: refrigerant normal condition unit is in the case where heating mal-condition, and after overload of compressor protection, tube temperature difference is same
Meet scarce fluorine protective condition, causes unit report to lack fluorine protection failure, air-conditioning cannot be run, and after-sales service personnel is caused to miss
Judgement maintenance；It is constantly in detection in unit running process in addition, lacking fluorine protection control, if unit is due to ultra low voltage
It etc. causing compressor continuously to shut down a period of time, also be easy to cause wrong report to lack fluorine and protects, cannot start after voltage recovery, because
This, is easy to cause overload of compressor protection to obscure with the protection of scarce fluorine, and causes to report scarce fluorine protection by mistake.
What the existing automatic overload protection of compressor relied on is the bimetal leaf high temperature deformation in compressor overload protector
Movement disconnects protection, but there is problems in that compressor is easy to lead to frequent start-stop due to voltage fluctuation, influencing compressor makes
Use the service life；Compressor influences compressor service life due to the problem of being easy to appear frequent start-stop under the conditions of abnormal high temperature.
Therefore, it is necessary to protect control method to existing scarce fluorine and prevent high frequent overload protection work from further changing
Into.
Summary of the invention
The technical problem to be solved by the invention for the present situation of prior art is to provide a kind of air-conditioning heatings to lack fluorine protection
And prevent the control method of high frequent overload protection, the control method can the scarce fluorine under accurate judgement heating mode protect
Shield, while realizing that lacking fluorine protection effectively distinguishes with overload of compressor protection and can prevent high frequent overload protection.
The technical scheme of the invention to solve the technical problem is: a kind of air-conditioning heating lacks fluorine protection and prevents from pressing
The control method of the frequent overload protection of contracting machine, the air-conditioning include compressor, indoor fan, outdoor fan, indoor heat exchanger
And outdoor heat exchanger, it is characterised in that: the control method the following steps are included:
S1: air-conditioning heating booting before compressor start, detects and records the indoor air inlet temperature of indoor heat exchanger entrance
Spend Ta0, indoor coil pipe Te0And outdoor coil temperature Tw0, and perform the next step；
S2: air-conditioning is run in a heating mode, outdoor fan starting, and compressor, which is powered, to be run, and indoor fan is pre- first
If time t1It is interior to be run by the setting of anti-cold wind function, in t1The anti-cold wind function of backed off after random；
S3: air-conditioner set is operated normally by heating mode, and every the second preset time t2It is interior secondary to overload protection failure
Number is reset；
S4: whether the runing time t for detecting compressor reaches third preset time t3If t > t3, step S5 is executed, otherwise
Return to step S3；
S5: lasting to detect indoor inlet air temperature Ta, indoor coil pipe TeAnd outdoor coil temperature Tw, in arbitrary continuation
Time t4Interior detection Δ Te1=Te-Ta, and with the first preset temperature T1It is compared, detects Δ Tw1=Tw0-Tw, and in advance with second
If temperature T2It is compared, if meeting in any continuous time t4It is interior, Δ Te1≤ T1And Δ Tw1≤ T2, S6 is thened follow the steps,
Otherwise, S3 is returned to step；
S6: outdoor fan is closed, compressor power-off is shut down, through the 5th preset time t5Compressor, which is powered, afterwards runs, and
Continuous t4It is interior every t6Time detects one group of indoor coil pipe T simultaneouslyeWith outdoor coil temperature Tw；
S7: in continuous t4The Δ T that interior detection occurse2=Tej-Tei, and with third preset temperature T3It is compared, detects Δ
Tw2=Twi-Twj, and with the 4th preset temperature T4It is compared, wherein i and j is integer, i < j, and j=2,3 ..., t4/t6+
1, if meeting in any continuous time t4It is interior, Δ Te2≤ T3And Δ Tw2Equal > T4, step S8 is executed, otherwise, executes step S9；
S8: showing and lack fluorine fault code, and compressor power-off is shut down, and closes outdoor fan and indoor fan；
S9: if in any continuous time t4It is interior, Δ Te2≤ T3And Δ Tw2≤ T4, step S10 is executed, otherwise returns and holds
Row step S3；
S10: indoor fan, outdoor fan and compressor operate normally, and recording compressed machine overload fault times N is simultaneously
It is compared with preset overload of compressor number of stoppages M；
S11: if N >=M, S12 is thened follow the steps, S3 is otherwise returned to step；
S12: display overload of compressor protects code, closes indoor fan and outdoor fan, compressor power-off.
Preferably, step S4 is carried out after step s40Judge whether air-conditioning is in defrosting process, if air-conditioning is not at
During defrosting, S5 is thened follow the steps, S3 is otherwise returned to step.
Further preferably, in step s 2, the first preset time t1For 4min.
Preferably, in step s3, the second preset time t2For 1h.
Preferably, in step s 4, third preset time t3≥6min。
Preferably, in step s 5, the first preset temperature T1It is 3 DEG C, the second preset temperature T2It is 2 DEG C, t4For 90s.
Preferably, in step s 6, the 5th preset time t5For 4min, t6For 10s.
Preferably, in the step s 7, third preset temperature T3It is 3 DEG C, the 4th preset temperature T4It is 2 DEG C.
Preferably, in step slo, preset overload of compressor number of stoppages M is 4 times.
Compared with the prior art, the advantages of the present invention are as follows: compressor mistake can effectively be distinguished by the control method
It carries and scarce fluorine is protected, and an overload protection is occurred after a period of time for compressor, air-conditioning can continue to run, and air-conditioner set will not
Disorderly closedown is reported immediately, and influences the experience of user, only just reports disorderly closedown not after overloading number and being more than certain amount
It can restore；It in addition, there is continuous over loading in the air-conditioner set short time, can protect in time, avoid overloading due to high frequent
And compressor is damaged, control method is more reasonable and practical.
Detailed description of the invention
Fig. 1 is the control flow chart of the embodiment of the present invention.
Specific embodiment
The present invention will be described in further detail below with reference to the embodiments of the drawings.
As shown in Figure 1, lacking fluorine protection for air-conditioning heating of the present invention and preventing the control method of high frequent overload protection
Preferred embodiment.Air-conditioning includes compressor, indoor fan, outdoor fan, indoor heat exchanger and outdoor heat exchanger, the sky
The scarce fluorine protection of modulation heat and prevent high frequent overload protection control method the following steps are included:
S1: air-conditioning heating booting before compressor start, detects and records the indoor air inlet temperature of indoor heat exchanger entrance
Spend Ta0, indoor coil pipe Te0And outdoor coil temperature Tw0, and perform the next step；
S2: air-conditioning is run in a heating mode, outdoor fan starting, and compressor, which is powered, to be run, and indoor fan is pre- first
If time t1It is interior to be run by the setting of anti-cold wind function, in t1The anti-cold wind function of backed off after random, wherein the first preset time t1For 4min；
S3: air-conditioner set is operated normally by heating mode, and every the second preset time t2It is interior secondary to overload protection failure
Number is reset, wherein t2For 1h；
S4: whether the runing time t for detecting compressor reaches third preset time t3If t > t3, execute step S40, no
Then return to step S3, wherein t3=6min；
S40: judge whether air-conditioning is in defrosting process, if air-conditioning is not at during defrosting, thens follow the steps S5, it is no
Then, S3 is returned to step；
S5: lasting to detect indoor inlet air temperature Ta, indoor coil pipe TeAnd outdoor coil temperature Tw, in arbitrary continuation
Time t4Interior detection Δ Te1=Te-Ta, and with the first preset temperature T1It is compared, detects Δ Tw1=Tw0-Tw, and in advance with second
If temperature T2It is compared, if meeting in any continuous time t4It is interior, Δ Te1≤ T1And Δ Tw1≤ T2, S6 is thened follow the steps,
Otherwise, S3 is returned to step, wherein the first preset temperature T1It is 3 DEG C, the second preset temperature T2It is 2 DEG C, t4For 90s；
S6: outdoor fan is closed, compressor power-off is shut down, through the 5th preset time t5Compressor, which is powered, afterwards runs, and
Every t in continuous 90s6Time detects one group of indoor coil pipe T simultaneouslyeWith outdoor coil temperature Tw, wherein the 5th it is default when
Between t5For 4min, t6For 10s；
S7: the Δ T of appearance is detected in continuous 90se2=Tej-Tei, and with third preset temperature T3It is compared, detects
ΔTw2=Twi-Twj, and with the 4th preset temperature T4It is compared, (wherein, i and j is integer, i < j, and j=2,3 ...,
10), if meeting the Δ T in any continuous time 90se2≤ T3And Δ Tw2Equal > T4, step S8 is executed, otherwise, executes step
S9, wherein third preset temperature T3It is 3 DEG C, the 4th preset temperature T4It is 2 DEG C；
S8: showing and lack fluorine fault code, and compressor power-off is shut down, and closes outdoor fan and indoor fan；
S9: if in any continuous time 90s, Δ Te2≤ 3 DEG C and Δ Tw2≤ 2 DEG C, step S10 is executed, is otherwise returned
Receipt row step S3；
S10: indoor fan, outdoor fan and compressor operate normally, and recording compressed machine overload fault times N is simultaneously
It is compared with preset overload of compressor number of stoppages M, wherein M is 4 times；
S11: if N >=4, S12 is thened follow the steps, S3 is otherwise returned to step；
S12: display overload of compressor protects code, closes indoor fan and outdoor fan, compressor power-off.
Overload of compressor and the protection of scarce fluorine can be effectively distinguished by the control method, and compressor is through after a period of time
An overload protection occurs, air-conditioning can continue to run, and air-conditioner set will not report disorderly closedown immediately, and influence the experience of user,
Only disorderly closedown and irrecoverable is just reported after overloading number and being more than certain amount；In addition, occurring in the air-conditioner set short time
Continuous over loading can be protected in time, avoid damaging compressor since high frequent is overloaded.
Claims (9)
1. a kind of air-conditioning heating lacks fluorine protection and prevents the control method of high frequent overload protection, the air-conditioning includes pressure
Contracting machine, indoor fan, outdoor fan, indoor heat exchanger and outdoor heat exchanger, it is characterised in that: the control method include with
Lower step:
S1: air-conditioning heating booting before compressor start, detects and records the indoor inlet air temperature of indoor heat exchanger entrance
Ta0, indoor coil pipe Te0And outdoor coil temperature Tw0, and perform the next step；
S2: air-conditioning is run in a heating mode, outdoor fan starting, and compressor, which is powered, to be run, and indoor fan is when first is default
Between t1It is interior to be run by the setting of anti-cold wind function, in t1The anti-cold wind function of backed off after random；
S3: air-conditioner set is operated normally by heating mode, and every the second preset time t2It is interior clear to the overload protection number of stoppages
Zero；
S4: whether the runing time t for detecting compressor reaches third preset time t3If t > t3, step S5 is executed, is otherwise returned
Execute step S3；
S5: lasting to detect indoor inlet air temperature Ta, indoor coil pipe TeAnd outdoor coil temperature Tw, in any continuous time t4
Interior detection Δ Te1=Te-Ta, and with the first preset temperature T1It is compared, detects Δ Tw1=Tw0-Tw, and with the second preset temperature
T2It is compared, if meeting in any continuous time t4It is interior, Δ Te1≤ T1And Δ Tw1≤ T2, S6 is thened follow the steps, otherwise,
Return to step S3；
S6: outdoor fan is closed, compressor power-off is shut down, through the 5th preset time t5Compressor, which is powered, afterwards runs, and in continuous t4
It is interior every t6Time detects one group of indoor coil pipe T simultaneouslyeWith outdoor coil temperature Tw；
S7: in continuous t4The Δ T that interior detection occurse2=Tej-Tei, and with third preset temperature T3It is compared, detects Δ Tw2=
Twi-Twj, and with the 4th preset temperature T4It is compared, wherein i and j is integer, i < j, and j=2,3 ..., t4/t6+ 1, if
Meet in any continuous time t4It is interior, Δ Te2≤ T3And Δ Tw2Equal > T4, step S8 is executed, otherwise, executes step S9；
S8: showing and lack fluorine fault code, and compressor power-off is shut down, and closes outdoor fan and indoor fan；
S9: if in any continuous time t4It is interior, Δ Te2≤ T3And Δ Tw2≤ T4, step S10 is executed, otherwise returns and executes step
Rapid S3；
S10: indoor fan, outdoor fan and compressor operate normally, and recording compressed machine overload fault times N and with it is pre-
If overload of compressor number of stoppages M be compared；
S11: if N >=M, S12 is thened follow the steps, S3 is otherwise returned to step；
S12: display overload of compressor protects code, closes indoor fan and outdoor fan, compressor power-off.
2. air-conditioning heating according to claim 1 lacks fluorine protection and prevents the control method of high frequent overload protection,
It is characterized by: carrying out step S4 after step s40Judge whether air-conditioning is in defrosting process, if air-conditioning is not at defrosting
In the process, S5 is thened follow the steps, S3 is otherwise returned to step.
3. air-conditioning heating according to claim 1 lacks fluorine protection and prevents the control method of high frequent overload protection,
It is characterized by: in step s 2, the first preset time t1For 4min.
4. air-conditioning heating according to claim 1 lacks fluorine protection and prevents the control method of high frequent overload protection,
It is characterized by: in step s3, the second preset time t2For 1h.
5. air-conditioning heating according to claim 1 lacks fluorine protection and prevents the control method of high frequent overload protection,
It is characterized by: in step s 4, third preset time t3≥6min。
6. air-conditioning heating according to claim 1 lacks fluorine protection and prevents the control method of high frequent overload protection,
It is characterized by: in step s 5, the first preset temperature T1It is 3 DEG C, the second preset temperature T2It is 2 DEG C, t4For 90s.
7. air-conditioning heating according to claim 1 lacks fluorine protection and prevents the control method of high frequent overload protection,
It is characterized by: in step s 6, the 5th preset time t5For 4min, t6For 10s.
8. air-conditioning heating according to claim 1 lacks fluorine protection and prevents the control method of high frequent overload protection,
It is characterized by: in the step s 7, third preset temperature T3It is 3 DEG C, the 4th preset temperature T4It is 2 DEG C.
9. air-conditioning heating according to claim 1 lacks fluorine protection and prevents the control method of high frequent overload protection,
It is characterized by: in step slo, preset overload of compressor number of stoppages M is 4 times.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710684171.4A CN107477778B (en) | 2017-08-11 | 2017-08-11 | Air-conditioning heating lacks fluorine protection and prevents the control method of high frequent overload protection |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710684171.4A CN107477778B (en) | 2017-08-11 | 2017-08-11 | Air-conditioning heating lacks fluorine protection and prevents the control method of high frequent overload protection |
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| CN107477778A CN107477778A (en) | 2017-12-15 |
| CN107477778B true CN107477778B (en) | 2019-10-18 |
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| CN110398022B (en) * | 2019-08-02 | 2020-07-31 | 宁波奥克斯电气股份有限公司 | Air conditioner overload protection judgment method and device and air conditioner |
| 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 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59191839A (en) * | 1983-04-14 | 1984-10-31 | Matsushita Electric Ind Co Ltd | Control method of overloading in heating of air conditioner |
| JPH11237091A (en) * | 1998-02-20 | 1999-08-31 | Toshiba Corp | Multi-room split type air conditioner |
| CN101893310A (en) * | 2010-08-31 | 2010-11-24 | 四川长虹空调有限公司 | Control method for preventing overload of compressor under heating mode of heat pump air conditioner |
| CN102705954A (en) * | 2011-07-28 | 2012-10-03 | 宁波奥克斯电气有限公司 | Internet-based automatic fault repair and detection method of frequency-conversion air conditioner |
| CN103557578B (en) * | 2013-11-04 | 2016-02-03 | 宁波奥克斯电气股份有限公司 | Air-cooled modular cold and hot water unit lacks the guard method of fluorine |
-
2017
- 2017-08-11 CN CN201710684171.4A patent/CN107477778B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59191839A (en) * | 1983-04-14 | 1984-10-31 | Matsushita Electric Ind Co Ltd | Control method of overloading in heating of air conditioner |
| JPH11237091A (en) * | 1998-02-20 | 1999-08-31 | Toshiba Corp | Multi-room split type air conditioner |
| CN101893310A (en) * | 2010-08-31 | 2010-11-24 | 四川长虹空调有限公司 | Control method for preventing overload of compressor under heating mode of heat pump air conditioner |
| CN102705954A (en) * | 2011-07-28 | 2012-10-03 | 宁波奥克斯电气有限公司 | Internet-based automatic fault repair and detection method of frequency-conversion air conditioner |
| CN103557578B (en) * | 2013-11-04 | 2016-02-03 | 宁波奥克斯电气股份有限公司 | Air-cooled modular cold and hot water unit lacks the guard method of fluorine |
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| CN107477778A (en) | 2017-12-15 |
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