CN107560100A - The control method of air conditioner coolant not foot protection - Google Patents
The control method of air conditioner coolant not foot protection Download PDFInfo
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- CN107560100A CN107560100A CN201710674172.0A CN201710674172A CN107560100A CN 107560100 A CN107560100 A CN 107560100A CN 201710674172 A CN201710674172 A CN 201710674172A CN 107560100 A CN107560100 A CN 107560100A
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- coil pipe
- indoor set
- air conditioner
- time temperature
- compressor
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Abstract
The present invention relates to a kind of control method of air conditioner coolant not foot protection, comprise the following steps：According to indoor set air intake initial temperature Ta0, indoor set coil pipe initial temperature Te0, outdoor unit coil pipe initial temperature Tw0, indoor set air intake real-time temperature Ta, indoor set coil pipe real-time temperature Te and outdoor unit coil pipe real-time temperature Tw, which judges whether to enter, judges whether deficiency acts refrigerant, judge whether refrigerant is insufficient according to the difference between the difference between the indoor set coil pipe real-time temperature Te recorded twice in succession and the outdoor unit coil pipe real-time temperature Tw recorded twice in succession, judge whether compressor overloads according to the difference between the difference between the indoor set coil pipe real-time temperature Te recorded twice in succession and the outdoor unit coil pipe real-time temperature Tw recorded twice in succession.The method have the advantages that：Cold medium shortage and overload of compressor can be effectively distinguished, makes the judgement of cold medium shortage more accurate.
Description
Technical field
It is especially a kind of control method of air conditioner coolant not foot protection the present invention relates to air conditioner.
Background technology
Existing air conditioner all has cold medium shortage protection control logic, to ensure to avoid pressing in the case of cold medium shortage
Contracting machine is chronically at hot operation state.The control method of current existing conventional air conditioner coolant not foot protection is as follows：Freezing
Under pattern, compressor continuous service for a period of time after, if the indoor temperature detected within ensuing continuous a period of time with
Temperature approach between indoor set coil temperature is less than certain value (this value is generally relatively low), then judges cold medium shortage, air conditioner with
Enter cold medium shortage to protect.The control method of above-mentioned air conditioner coolant not foot protection has the following disadvantages in actual application
Part：Air conditioner in the case that ambient temperature is relatively low when freezing, even if refrigerant is in normal level, once but air conditioner
After being protected into overload of compressor, the temperature approach between indoor temperature and indoor set coil temperature can similarly meet cold medium shortage
Decision condition so that system makes the false judgment of cold medium shortage, and then air conditioner is protected into cold medium shortage, influence
The normal use of user.
The content of the invention
The technical problem to be solved in the present invention, which is to provide one kind, can effectively distinguish cold medium shortage and overload of compressor, make
The control method of the more accurate air conditioner coolant of judgement of cold medium shortage not foot protection.
In order to solve the above technical problems, the technical scheme is that：A kind of control of air conditioner coolant not foot protection is provided
Method, wherein, comprise the following steps：
S1, when air conditioner freeze start or be switched to refrigeration mode, before compressor start, detect and record indoor set
Wind initial temperature Ta0, indoor set coil pipe initial temperature Te0 and outdoor unit coil pipe initial temperature Tw0, and perform step S2；
S2, indoor set blower fan, outdoor unit blower fan and compressor are opened, air conditioner is run by normal refrigerating mode, and is performed
Step S3；
S3, after compressor continuous service for a period of time t1, persistently detect and record indoor set air intake real-time temperature Ta, room
Interior machine coil pipe real-time temperature Te and outdoor unit coil pipe real-time temperature Tw, and perform step S4；
S4, according to indoor set air intake initial temperature Ta0, indoor set coil pipe initial temperature Te0, outdoor unit coil pipe initial temperature
Tw0, indoor set air intake real-time temperature Ta, indoor set coil pipe real-time temperature Te and outdoor unit coil pipe real-time temperature Tw judge whether into
Enter to judge whether deficiency acts refrigerant,
If so, then performing step S5, step S2 is otherwise performed；
S5, make indoor set fan parking, outdoor unit fan parking, compressor shutdown, after t3 after a while, compressor
Start shooting and run according to normal refrigeration instruction with outdoor unit blower fan, indoor set blower fan remains shut off, in ensuing a period of time t4
Inside t5 is detected and is recorded an indoor set coil pipe real-time temperature Te and outdoor unit coil pipe real-time temperature Tw at regular intervals, according to
Difference between the indoor set coil pipe real-time temperature Te recorded twice in succession and the outdoor unit coil pipe recorded twice in succession are immediately warm
Difference between degree Tw judges whether refrigerant is insufficient,
If so, then providing cold medium shortage prompting, air conditioner enters cold medium shortage protected mode immediately；
Otherwise step S2 is performed.
The control method of air conditioner coolant of the present invention not foot protection, wherein, in step s 4, judge whether to enter and sentence
Whether the condition of deficiency action is disconnected refrigerant：
Whether meet " arbitrary continuation is for a period of time in t2, △ Te1≤Tx, and △ Tw1≤Ty " this condition；
Wherein, △ Te1=Ta-Te, △ Tw1=Tw-Tw0.
The control method of air conditioner coolant of the present invention not foot protection, wherein, in step s 5, judge refrigerant whether not
Foot condition be：
Whether meet " herein in the continuous t4 times, have a △ Te2 ＞ Tm, and △ Tw2≤Tn " this condition；
Wherein, △ Te2=Tei-Tej, △ Tw2=Twj-Twi, Tei and Tej are in the continuous t4 times, arbitrarily continuously
The indoor set coil pipe real-time temperature recorded twice, Twi and Twj are the outdoor that arbitrarily records twice in succession in the continuous t4 times
Machine coil pipe real-time temperature, and i ＜ j, j=2,3,4,5 ....
The control method of air conditioner coolant of the present invention not foot protection, wherein, judge whether refrigerant is insufficient in step S5
Afterwards, it is further comprising the steps of before performing step S2：
S6, according to the difference between the indoor set coil pipe real-time temperature Te that records twice in succession and the room recorded twice in succession
Difference between outer machine coil pipe real-time temperature Tw judges whether compressor overloads,
If so, then recording compressed machine overload number, and perform step S7；
Otherwise step S2 is performed；
S7, judge record overload of compressor number value whether >=preset value A,
If so, then being prompted to overload of compressor, air conditioner enters overload of compressor protected mode immediately；
Otherwise step S2 is performed；
Wherein, A=2,3,4,5,6 ....
The control method of air conditioner coolant of the present invention not foot protection, wherein, in step s 6, whether judge compressor
The condition of overload is：
Whether meet " herein in the continuous t4 times, have △ Te2≤Tm, and △ Tw2≤Tn " this condition；
Wherein, △ Te2=Tei-Tej, △ Tw2=Twj-Twi, Tei and Tej are in the continuous t4 times, arbitrarily continuously
The indoor set coil pipe real-time temperature recorded twice, Twi and Twj are the outdoor that arbitrarily records twice in succession in the continuous t4 times
Machine coil pipe real-time temperature, and i ＜ j, j=2,3,4,5 ....
The control method of air conditioner coolant of the present invention not foot protection, wherein, in step s 6, A span is 3
~5.
The control method of air conditioner coolant of the present invention not foot protection, wherein, in addition to step SS:
After air conditioner freezes and starts shooting or be switched to refrigeration mode, t6 is secondary to the overload of compressor of record at regular intervals
Number is reset.
The control method of air conditioner coolant of the present invention not foot protection, wherein, t6 span is 30~90 minutes.
The control method of air conditioner coolant of the present invention not foot protection, wherein, t1 span is 3~10 minutes,
T3 span is 2~6 minutes, and t4 span is≤100 seconds, and t5 span is 8~12 seconds.
The control method of air conditioner coolant of the present invention not foot protection, wherein, t2 span is 60~100 seconds,
Tx span is 2~4 DEG C, and Ty span is 2~5 DEG C.
The control method of air conditioner coolant of the present invention not foot protection, wherein, Tm span is 2~4 DEG C, Tn's
Span is 2~5 DEG C.
After above method, compared with prior art, air conditioner coolant of the present invention not foot protection control method have with
Lower advantage：1st, air conditioner can timely enter cold medium shortage protected mode in cold medium shortage, avoid compressor operating time mistake
Grow and cause to damage；2nd, cold medium shortage and overload of compressor can be effectively distinguished, makes the judgement of cold medium shortage more accurate；3rd, such as
Fruit only occurs in one section of longer time once or several second compression machines overload, then air conditioner can be made to continue normal fortune
OK, air conditioner is avoided to frequently enter overload of compressor protected mode and caused damage to compressor；If the 4th, at one section shorter
Multiple overload of compressor is recurred in time, then air conditioner can be made to timely enter overload of compressor protected mode, avoids compressing
Machine damages because frequently overloading.
Brief description of the drawings
Fig. 1 is the control flow chart of the air conditioner coolant of the present invention not control method of foot protection.
Embodiment
The control method of air conditioner coolant of the present invention not foot protection is made with reference to embodiment further detailed
Explanation.
In present embodiment, the control method of air conditioner coolant of the present invention not foot protection comprises the following steps：
S1, when air conditioner freeze start or be switched to refrigeration mode, before compressor start, detect and record indoor set
Wind initial temperature Ta0, indoor set coil pipe initial temperature Te0 and outdoor unit coil pipe initial temperature Tw0, and perform step S2；
S2, indoor set blower fan, outdoor unit blower fan and compressor are opened, air conditioner is run by normal refrigerating mode, and is performed
Step S3；
S3, after compressor continuous service for a period of time t1, persistently detect and record indoor set air intake real-time temperature Ta, room
Interior machine coil pipe real-time temperature Te and outdoor unit coil pipe real-time temperature Tw, and step S4 is performed,
Wherein, t1 span is 3~10 minutes, preferably 5 minutes；
S4, according to indoor set air intake initial temperature Ta0, indoor set coil pipe initial temperature Te0, outdoor unit coil pipe initial temperature
Tw0, indoor set air intake real-time temperature Ta, indoor set coil pipe real-time temperature Te and outdoor unit coil pipe real-time temperature Tw judge whether into
Enter to judge whether deficiency acts refrigerant, it is in the present embodiment, above-mentioned to judge whether to enter the bar for judging the whether insufficient action of refrigerant
Part is：
Whether meet " arbitrary continuation is for a period of time in t2, △ Te1≤Tx, and △ Tw1≤Ty " this condition；
If so, then performing step S5, step S2 is otherwise performed；
Wherein, △ Te1=Ta-Te, △ Tw1=Tw-Tw0, t2 span be 60~100 seconds, preferably 90 seconds,
Tx span is 2~4 DEG C, and preferably 2 DEG C, Ty span is 2~5 DEG C, preferably 3 DEG C；
S5, make indoor set fan parking, outdoor unit fan parking, compressor shutdown, after t3 after a while, compressor
Start shooting and run according to normal refrigeration instruction with outdoor unit blower fan, indoor set blower fan remains shut off, in ensuing a period of time t4
Inside t5 is detected and is recorded an indoor set coil pipe real-time temperature Te and outdoor unit coil pipe real-time temperature Tw at regular intervals, according to
Difference between the indoor set coil pipe real-time temperature Te recorded twice in succession and the outdoor unit coil pipe recorded twice in succession are immediately warm
Difference between degree Tw judges whether refrigerant is insufficient, in the present embodiment, judges whether the condition of deficiency is refrigerant：
Whether meet " herein in the continuous t4 times, have a △ Te2 ＞ Tm, and △ Tw2≤Tn " this condition；
If so, then providing cold medium shortage prompting, air conditioner enters cold medium shortage protected mode immediately；
Otherwise step S6 is performed；
Wherein, △ Te2=Tei-Tej, △ Tw2=Twj-Twi, Tei and Tej are in the continuous t4 times, arbitrarily continuously
The indoor set coil pipe real-time temperature recorded twice, Twi and Twj are the outdoor that arbitrarily records twice in succession in the continuous t4 times
Machine coil pipe real-time temperature, and i ＜ j, j=2,3,4,5 ..., i.e. j be >=2 natural number, i be smaller than j 1 natural number, t3's
Span is 2~6 minutes, preferably 4 minutes, and t4 span is≤100 seconds, preferably 90 seconds, t5 span
For 8~12 seconds, preferably 10 seconds, Tm span was 2~4 DEG C, and preferably 2 DEG C, Tn span is 2~5 DEG C, preferably
For 3 DEG C；
S6, according to the difference between the indoor set coil pipe real-time temperature Te that records twice in succession and the room recorded twice in succession
Difference between outer machine coil pipe real-time temperature Tw judges whether compressor overloads, in the present embodiment, judge compressor whether mistake
The condition of load is：
Whether meet " herein in the continuous t4 times, have △ Te2≤Tm, and △ Tw2≤Tn " this condition；
If so, then recording compressed machine overload number, and perform step S7, in the present embodiment, the overload of compressor of record
Number is cumulative number, if the overload of compressor number of first record is 1, then the overload of compressor number of second of record
It is then 2, by that analogy；
Otherwise step S2 is performed；
With in step S5, △ Te2=Tei-Tej, △ Tw2=Twj-Twi, Tei and Tej be the continuous t4 times in,
The arbitrary indoor set coil pipe real-time temperature recorded twice in succession, Twi and Twj are in the continuous t4 times, arbitrarily twice in succession
The outdoor unit coil pipe real-time temperature of record, and i ＜ j, j=2,3,4,5 ..., i.e. j be >=2 natural number, i be smaller than j 1 from
So number, t3 span are 2~6 minutes, preferably 4 minutes, and t4 span is≤100 seconds, preferably 90 seconds, t5's
Span is 8~12 seconds, preferably 10 seconds, and Tm span is 2~4 DEG C, preferably 2 DEG C, Tn span for 2~
5 DEG C, preferably 3 DEG C；
S7, judge record overload of compressor number value whether >=preset value A,
If so, then being prompted to overload of compressor, air conditioner enters overload of compressor protected mode immediately；
Otherwise step S2 is performed；
Wherein, A=2,3,4,5,6 ..., i.e. A is >=2 natural number, in the present embodiment, A span for 3~
5, preferably 4.
The control method of air conditioner coolant of the present invention not foot protection also includes step SS:
After air conditioner freezes and starts shooting or be switched to refrigeration mode, t6 is secondary to the overload of compressor of record at regular intervals
Number is reset；
Wherein, t6 span is 30~90 minutes, preferably 60 minutes.
Step SS can avoid air conditioner from the reason such as fluctuating in one section of long period internal cause electric voltage exception and cause compressor mistake
Load number is more and frequently enters the situation of overload of compressor protected mode and occurs, so that air conditioner can continue to normally transport
OK, avoid causing damage to compressor.
In the present embodiment, indoor set EAT refers to the temperature of indoor set air inlet, indoor set coil temperature
The temperature at heat exchanger indoor unit medium position is referred to, outdoor unit coil temperature refers to position in heat exchanger of outdoor unit
The temperature at place is put, said temperature can obtain by being separately positioned on each temperature sensor of corresponding position；In addition, the present embodiment
In involved various electric elements (such as outdoor unit blower fan, compressor, indoor set blower fan, temperature sensor) by sky
The controller control of device is adjusted, and overload of compressor number is also recorded by controller, and also each step in the present embodiment is by control
Device control processed is completed, and above-mentioned these are existing conventional techniques, therefore are not repeated herein.
Embodiment above is only that the preferred embodiment of the present invention is described, and not the scope of the present invention is entered
Row limits, and on the premise of design spirit of the present invention is not departed from, those of ordinary skill in the art make to technical scheme
The various modifications gone out and improvement, it all should fall into the protection domain of claims of the present invention determination.
Claims (11)
- A kind of 1. control method of air conditioner coolant not foot protection, it is characterised in that：Comprise the following steps：S1, when air conditioner freeze start or be switched to refrigeration mode, before compressor start, at the beginning of detecting and recording indoor set air intake Beginning temperature Ta0, indoor set coil pipe initial temperature Te0 and outdoor unit coil pipe initial temperature Tw0, and perform step S2；S2, indoor set blower fan, outdoor unit blower fan and compressor are opened, air conditioner is run by normal refrigerating mode, and performs step S3；S3, after compressor continuous service for a period of time t1, persistently detect and record indoor set air intake real-time temperature Ta, indoor set Coil pipe real-time temperature Te and outdoor unit coil pipe real-time temperature Tw, and perform step S4；S4, according to indoor set air intake initial temperature Ta0, indoor set coil pipe initial temperature Te0, outdoor unit coil pipe initial temperature Tw0, Indoor set air intake real-time temperature Ta, indoor set coil pipe real-time temperature Te and outdoor unit coil pipe real-time temperature Tw, which judge whether to enter, to be sentenced Whether deficiency acts disconnected refrigerant,If so, then performing step S5, step S2 is otherwise performed；S5, make indoor set fan parking, outdoor unit fan parking, compressor shutdown, after t3 after a while, compressor and room Outer machine blower fan is started shooting according to normal refrigeration instruction and run, and indoor set blower fan remains shut off, every in ensuing a period of time t4 Detected every a period of time t5 and record an indoor set coil pipe real-time temperature Te and outdoor unit coil pipe real-time temperature Tw, according to continuous Difference between the indoor set coil pipe real-time temperature Te recorded twice and the outdoor unit coil pipe real-time temperature Tw recorded twice in succession Between difference judge whether refrigerant insufficient,If so, then providing cold medium shortage prompting, air conditioner enters cold medium shortage protected mode immediately；Otherwise step S2 is performed.
- 2. the control method of air conditioner coolant according to claim 1 not foot protection, it is characterised in that：In step s 4, sentence Break whether to enter and judge whether the condition of deficiency action is refrigerant：Whether meet " arbitrary continuation is for a period of time in t2, △ Te1≤Tx, and △ Tw1≤Ty " this condition；Wherein, △ Te1=Ta-Te, △ Tw1=Tw-Tw0.
- 3. the control method of air conditioner coolant according to claim 1 not foot protection, it is characterised in that：In step s 5, sentence Whether the condition of deficiency is disconnected refrigerant：Whether meet " herein in the continuous t4 times, have a △ Te2 ＞ Tm, and △ Tw2≤Tn " this condition；Wherein, △ Te2=Tei-Tej, △ Tw2=Twj-Twi, Tei and Tej are in the continuous t4 times, arbitrarily twice in succession The indoor set coil pipe real-time temperature of record, Twi and Twj are the outdoor unit disk that arbitrarily records twice in succession in the continuous t4 times Pipe real-time temperature, and i ＜ j, j=2,3,4,5 ....
- 4. the control method of air conditioner coolant according to claim 1 not foot protection, it is characterised in that：Judge in step S5 cold It is further comprising the steps of before performing step S2 after whether matchmaker is insufficient：S6, according to the difference between the indoor set coil pipe real-time temperature Te that records twice in succession and the outdoor unit recorded twice in succession Difference between coil pipe real-time temperature Tw judges whether compressor overloads,If so, then recording compressed machine overload number, and perform step S7；Otherwise step S2 is performed；S7, judge record overload of compressor number value whether >=preset value A,If so, then being prompted to overload of compressor, air conditioner enters overload of compressor protected mode immediately；Otherwise step S2 is performed；Wherein, A=2,3,4,5,6 ....
- 5. the control method of air conditioner coolant according to claim 4 not foot protection, it is characterised in that：In step s 6, sentence The condition whether disconnected compressor overloads is：Whether meet " herein in the continuous t4 times, have △ Te2≤Tm, and △ Tw2≤Tn " this condition；Wherein, △ Te2=Tei-Tej, △ Tw2=Twj-Twi, Tei and Tej are in the continuous t4 times, arbitrarily twice in succession The indoor set coil pipe real-time temperature of record, Twi and Twj are the outdoor unit disk that arbitrarily records twice in succession in the continuous t4 times Pipe real-time temperature, and i ＜ j, j=2,3,4,5 ....
- 6. the control method of air conditioner coolant according to claim 4 not foot protection, it is characterised in that：In step s 6, A Span is 3~5.
- 7. the control method of air conditioner coolant according to claim 4 or 5 or 6 not foot protection, it is characterised in that：Also include step Rapid SS:After air conditioner freezes and starts shooting or be switched to refrigeration mode, t6 is clear to the overload of compressor number of record at regular intervals Zero.
- 8. the control method of air conditioner coolant according to claim 7 not foot protection, it is characterised in that：T6 span is 30~90 minutes.
- 9. the control method of air conditioner coolant according to claim 1 not foot protection, it is characterised in that：T1 span is 3~10 minutes, t3 span was 2~6 minutes, and t4 span is≤100 seconds, and t5 span is 8~12 seconds.
- 10. the control method of air conditioner coolant according to claim 2 not foot protection, it is characterised in that：T2 span For 60~100 seconds, Tx span was 2~4 DEG C, and Ty span is 2~5 DEG C.
- 11. the control method of air conditioner coolant according to claim 3 or 5 not foot protection, it is characterised in that：Tm value model Enclose for 2~4 DEG C, Tn span is 2~5 DEG C.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110274363A (en) * | 2019-06-26 | 2019-09-24 | 珠海格力电器股份有限公司 | Control method, device and the air-conditioning of air-conditioning |
| CN110793171A (en) * | 2019-11-13 | 2020-02-14 | 四川长虹空调有限公司 | Judgment method for insufficient refrigerant of air conditioning system and air conditioner |
| CN113432240A (en) * | 2021-06-30 | 2021-09-24 | 海信（广东）空调有限公司 | Method and device for detecting refrigerant leakage, air conditioner and storage medium |
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| CN110793171A (en) * | 2019-11-13 | 2020-02-14 | 四川长虹空调有限公司 | Judgment method for insufficient refrigerant of air conditioning system and air conditioner |
| CN113432240A (en) * | 2021-06-30 | 2021-09-24 | 海信（广东）空调有限公司 | Method and device for detecting refrigerant leakage, air conditioner and storage medium |
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| CN107560100B (en) | 2019-10-01 |
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