CN107560100B - 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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- CN107560100B CN107560100B CN201710674172.0A CN201710674172A CN107560100B CN 107560100 B CN107560100 B CN 107560100B CN 201710674172 A CN201710674172 A CN 201710674172A CN 107560100 B CN107560100 B CN 107560100B
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Abstract
The present invention relates to a kind of control methods of air conditioner coolant not foot protection, the following steps are included: entering the wind initial temperature Ta0 according to indoor unit, indoor unit coil pipe initial temperature Te0, outdoor unit coil pipe initial temperature Tw0, indoor unit enters the wind real-time temperature Ta, indoor unit coil pipe real-time temperature Te and outdoor unit coil pipe real-time temperature Tw, which judges whether to enter, judges the whether insufficient movement of refrigerant, the difference between outdoor unit coil pipe real-time temperature Tw recorded according to the difference between the indoor unit coil pipe real-time temperature Te recorded twice in succession and twice in succession judges whether refrigerant is insufficient, the difference between outdoor unit coil pipe real-time temperature Tw recorded according to the difference between the indoor unit coil pipe real-time temperature Te recorded twice in succession and twice in succession judges whether compressor overloads.The invention has the advantages that: cold medium shortage and overload of compressor can be effectively distinguished, keeps 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 technique
All there is existing air conditioner cold medium shortage to protect control logic, to guarantee to avoid pressing in the case where 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 mode, compressor continuous service for a period of time after, if the room temperature detected within next continuous a period of time with
Temperature difference between indoor unit coil temperature is less than certain value (this value is usually lower), then determines 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
Place: when air conditioner freezes under the condition of low ambient temperature, even if refrigerant is at a normal level, once but air conditioner
Into after overload of compressor protection, the temperature difference between room temperature and indoor unit coil temperature can similarly meet cold medium shortage
Decision condition, so that system be made to make the false judgment of cold medium shortage, and then air conditioner is made to enter cold medium shortage protection, influenced
The normal use of user.
Summary of the invention
The technical problem to be solved by the present invention is to cold medium shortage and overload of compressor can effectively be distinguished by providing one kind, be made
The control method for judging more accurate air conditioner coolant not foot protection of cold medium shortage.
In order to solve the above technical problems, the technical scheme is that providing a kind of control of air conditioner coolant not foot protection
Method, wherein the following steps are included:
S1, when air conditioner freeze booting or be switched to refrigeration mode, before compressor start, detect and record indoor unit into
Wind initial temperature Ta0, indoor unit coil pipe initial temperature Te0 and outdoor unit coil pipe initial temperature Tw0, and execute step S2；
S2, indoor unit blower, outdoor unit blower and compressor are opened, air conditioner is run by normal refrigerating mode, and is executed
Step S3；
S3, after compressor continuous service for a period of time t1, persistently detect and record indoor unit air inlet real-time temperature Ta, room
Interior machine coil pipe real-time temperature Te and outdoor unit coil pipe real-time temperature Tw, and execute step S4；
S4, initial temperature Ta0, indoor unit coil pipe initial temperature Te0, outdoor unit coil pipe initial temperature are entered the wind according to indoor unit
Tw0, indoor unit air inlet real-time temperature Ta, indoor unit coil pipe real-time temperature Te and outdoor unit coil pipe real-time temperature Tw judge whether into
Enter to judge the whether insufficient movement of refrigerant,
If so, S5 is thened follow the steps, it is no to then follow the steps S2；
S5, make indoor unit fan parking, outdoor unit fan parking, compressor shutdown, after t3 after a period of time, compressor
It is switched on and runs according to normal refrigeration instruction with outdoor unit blower, indoor unit blower remains shut off, in next a period of time t4
Inside t5 detects and records indoor unit coil pipe real-time temperature Te and outdoor unit coil pipe real-time temperature Tw at regular intervals, according to
The difference between indoor unit 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, providing cold medium shortage prompt, air conditioner enters cold medium shortage protected mode immediately；
It is no to then follow the steps S2.
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
The condition for movement that whether disconnected refrigerant is insufficient is:
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
The condition of foot is:
Whether meet and " herein in the continuous t4 time, has a △ Te2 > Tm, and △ Tw2≤Tn " this condition；
Wherein, △ Te2=Tei-Tej, △ Tw2=Twj-Twi, Tei and Tej are in the continuous t4 time, arbitrarily continuously
The indoor unit coil pipe real-time temperature recorded twice, Twi and Twj are the outdoor that arbitrarily records twice in succession in the continuous t4 time
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
Later, further comprising the steps of before executing step S2:
S6, according to the difference between the indoor unit 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, recording compressed machine overloads number, and execute step S7；
It is no to then follow the steps S2；
S7, judge record overload of compressor number value whether >=preset value A,
If so, prompting to overload of compressor, air conditioner enters overload of compressor protected mode immediately；
It is no to then follow the steps S2；
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 and " herein in the continuous t4 time, has △ Te2≤Tm, and △ Tw2≤Tn " this condition；
Wherein, △ Te2=Tei-Tej, △ Tw2=Twj-Twi, Tei and Tej are in the continuous t4 time, arbitrarily continuously
The indoor unit coil pipe real-time temperature recorded twice, Twi and Twj are the outdoor that arbitrarily records twice in succession in the continuous t4 time
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, the value range of A is 3
~5.
The control method of air conditioner coolant of the present invention not foot protection, wherein further include step SS:
After air conditioner freezes and is switched on or is 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 the value range of t6 is 30~90 minutes.
The control method of air conditioner coolant of the present invention not foot protection, wherein the value range of t1 is 3~10 minutes,
The value range of t3 is 2~6 minutes, and the value range of t4 is≤100 seconds, and the value range of t5 is 8~12 seconds.
The control method of air conditioner coolant of the present invention not foot protection, wherein the value range of t2 is 60~100 seconds,
The value range of Tx is 2~4 DEG C, and the value range of Ty is 2~5 DEG C.
The control method of air conditioner coolant of the present invention not foot protection, wherein the value range of Tm is 2~4 DEG C, Tn's
Value range 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: 1, air conditioner can timely enter cold medium shortage protected mode in cold medium shortage, avoid compressor operating time mistake
It grows and damages；2, cold medium shortage and overload of compressor can be effectively distinguished, keeps the judgement of cold medium shortage more accurate；3, such as
Primary or several second compression machine overloads only occur in one section of longer time for fruit, then air conditioner can be made to continue normal fortune
Row, avoids air conditioner from frequently entering overload of compressor protected mode and damage to compressor；If 4, 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 is damaged because frequently overloading.
Detailed description of the invention
Fig. 1 is the control flow chart of the air conditioner coolant of the present invention not control method of foot protection.
Specific 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, air conditioner coolant of the present invention not foot protection control method the following steps are included:
S1, when air conditioner freeze booting or be switched to refrigeration mode, before compressor start, detect and record indoor unit into
Wind initial temperature Ta0, indoor unit coil pipe initial temperature Te0 and outdoor unit coil pipe initial temperature Tw0, and execute step S2；
S2, indoor unit blower, outdoor unit blower and compressor are opened, air conditioner is run by normal refrigerating mode, and is executed
Step S3；
S3, after compressor continuous service for a period of time t1, persistently detect and record indoor unit air inlet 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 executed,
Wherein, the value range of t1 is 3~10 minutes, preferably 5 minutes；
S4, initial temperature Ta0, indoor unit coil pipe initial temperature Te0, outdoor unit coil pipe initial temperature are entered the wind according to indoor unit
Tw0, indoor unit air inlet real-time temperature Ta, indoor unit coil pipe real-time temperature Te and outdoor unit coil pipe real-time temperature Tw judge whether into
Enter to judge the whether insufficient movement of refrigerant, it is in the present embodiment, above-mentioned to judge whether to enter the item for judging the whether insufficient movement 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, S5 is thened follow the steps, it is no to then follow the steps S2；
Wherein, the value range of △ Te1=Ta-Te, △ Tw1=Tw-Tw0, t2 be 60~100 seconds, preferably 90 seconds,
The value range of Tx is 2~4 DEG C, and preferably 2 DEG C, the value range of Ty is 2~5 DEG C, preferably 3 DEG C；
S5, make indoor unit fan parking, outdoor unit fan parking, compressor shutdown, after t3 after a period of time, compressor
It is switched on and runs according to normal refrigeration instruction with outdoor unit blower, indoor unit blower remains shut off, in next a period of time t4
Inside t5 detects and records indoor unit coil pipe real-time temperature Te and outdoor unit coil pipe real-time temperature Tw at regular intervals, according to
The difference between indoor unit 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 that the whether insufficient condition of refrigerant is:
Whether meet and " herein in the continuous t4 time, has a △ Te2 > Tm, and △ Tw2≤Tn " this condition；
If so, providing cold medium shortage prompt, air conditioner enters cold medium shortage protected mode immediately；
It is no to then follow the steps S6；
Wherein, △ Te2=Tei-Tej, △ Tw2=Twj-Twi, Tei and Tej are in the continuous t4 time, arbitrarily continuously
The indoor unit coil pipe real-time temperature recorded twice, Twi and Twj are the outdoor that arbitrarily records twice in succession in the continuous t4 time
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
Value range is 2~6 minutes, and preferably 4 minutes, the value range of t4 was≤100 seconds, preferably 90 seconds, the value range of t5
It is 8~12 seconds, preferably 10 seconds, the value range of Tm is 2~4 DEG C, and preferably 2 DEG C, the value range of Tn is 2~5 DEG C, preferably
It is 3 DEG C；
S6, according to the difference between the indoor unit 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 and " herein in the continuous t4 time, has △ Te2≤Tm, and △ Tw2≤Tn " this condition；
If so, recording compressed machine overloads number, and step S7 is executed, 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, and so on；
It is no to then follow the steps S2；
With in step S5, △ Te2=Tei-Tej, △ Tw2=Twj-Twi, Tei and Tej be the continuous t4 time in,
The indoor unit coil pipe real-time temperature arbitrarily recorded twice in succession, Twi and Twj are in the continuous t4 time, 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, the value range of t3 are 2~6 minutes, and preferably 4 minutes, the value range of t4 was≤100 seconds, preferably 90 seconds, t5's
Value range is 8~12 seconds, and preferably 10 seconds, the value range of Tm was 2~4 DEG C, preferably 2 DEG C, the value range of Tn is 2~
5 DEG C, preferably 3 DEG C；
S7, judge record overload of compressor number value whether >=preset value A,
If so, prompting to overload of compressor, air conditioner enters overload of compressor protected mode immediately；
It is no to then follow the steps S2；
Wherein, A=2,3,4,5,6 ..., i.e. A is >=2 natural number, in the present embodiment, the value range of A is 3~
5, preferably 4.
The control method of air conditioner coolant of the present invention not foot protection further includes step SS:
After air conditioner freezes and is switched on or is switched to refrigeration mode, t6 is secondary to the overload of compressor of record at regular intervals
Number is reset；
Wherein, the value range of t6 is 30~90 minutes, preferably 60 minutes.
Step SS can be avoided air conditioner compressor mistake caused by reasons because of electric voltage exception fluctuation etc. within one section of long period
Carry that number is more and generation the case where frequently enter overload of compressor protected mode, so that air conditioner be made to can continue to normally transport
Row, avoids damaging compressor.
In the present embodiment, indoor unit inlet air temperature refers to the temperature of indoor unit air inlet, indoor unit coil temperature
Refer to the temperature at heat exchanger indoor unit medium position, outdoor unit coil temperature refers to position in heat exchanger of outdoor unit
The temperature at place is set, above-mentioned temperature can be obtained 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, compressor, indoor unit blower, temperature sensor) by sky
The controller control of device is adjusted, and overload of compressor number is also recorded by controller, and each step in the present embodiment is by control
Device control processed is completed, and above-mentioned these are existing conventional techniques, and therefore, not repeat them here.
Above embodiment be only preferred embodiments of the present invention will be described, not to the scope of the present invention into
Row limits, and without departing from the spirit of the design of the present invention, those of ordinary skill in the art make technical solution of the present invention
Various changes and improvements out should all be fallen into the protection scope that claims of the present invention determines.
Claims (9)
1. a kind of control method of air conditioner coolant not foot protection, it is characterised in that: the following steps are included:
S1, when air conditioner freeze booting or be switched to refrigeration mode, before compressor start, detect and record indoor unit air inlet just
Beginning temperature Ta0, indoor unit coil pipe initial temperature Te0 and outdoor unit coil pipe initial temperature Tw0, and execute step S2；
S2, indoor unit blower, outdoor unit blower and compressor are opened, air conditioner is run by normal refrigerating mode, and executes step
S3；
S3, after compressor continuous service for a period of time t1, persistently detect and record indoor unit air inlet real-time temperature Ta, indoor unit
Coil pipe real-time temperature Te and outdoor unit coil pipe real-time temperature Tw, and execute step S4；
S4, according to indoor unit enter the wind initial temperature Ta0, indoor unit coil pipe initial temperature Te0, outdoor unit coil pipe initial temperature Tw0,
Indoor unit air inlet real-time temperature Ta, indoor unit coil pipe real-time temperature Te and outdoor unit coil pipe real-time temperature Tw, which judge whether to enter, to be sentenced
Movement that whether disconnected refrigerant is insufficient,
If so, S5 is thened follow the steps, it is no to then follow the steps S2；
S5, make indoor unit fan parking, outdoor unit fan parking, compressor shutdown, after t3 after a period of time, compressor and room
Outer machine blower is switched on according to normal refrigeration instruction and runs, and indoor unit blower remains shut off, every in next a period of time t4
An indoor unit coil pipe real-time temperature Te and outdoor unit coil pipe real-time temperature Tw are detected and record every a period of time t5, according to continuous
The difference between indoor unit 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, providing cold medium shortage prompt, air conditioner enters cold medium shortage protected mode immediately；
It is no to then follow the steps S6；
S6, according to the difference between the indoor unit 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, recording compressed machine overloads number, and execute step S7；
It is no to then follow the steps S2；
Judge the condition whether compressor overloads specifically:
Whether meet and " herein in the continuous t4 time, has △ Te2≤Tm, and △ Tw2≤Tn " this condition；
Wherein, △ Te2=Tei-Tej, △ Tw2=Twj-Twi, Tei and Tej are in the continuous t4 time, arbitrarily twice in succession
The indoor unit 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 time
Pipe real-time temperature, and i < j, j=2,3,4,5 ...；
S7, judge record overload of compressor number value whether >=preset value A,
If so, prompting to overload of compressor, air conditioner enters overload of compressor protected mode immediately；
It is no to then follow the steps S2；
Wherein, A=2,3,4,5,6 ....
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
It is disconnected whether to enter judge whether the condition of deficiency movement 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
The whether insufficient condition of disconnected refrigerant is:
Whether meet and " herein in the continuous t4 time, has a △ Te2 > Tm, and △ Tw2≤Tn " this condition；
Wherein, △ Te2=Tei-Tej, △ Tw2=Twj-Twi, Tei and Tej are in the continuous t4 time, arbitrarily twice in succession
The indoor unit 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 time
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: in step s 6, A's
Value range is 3~5.
5. the control method of air conditioner coolant according to claim 1 or 4 not foot protection, it is characterised in that: further include step
SS:
After air conditioner freezes and is switched on or is switched to refrigeration mode, t6 is clear to the overload of compressor number of record at regular intervals
Zero.
6. the control method of air conditioner coolant according to claim 5 not foot protection, it is characterised in that: the value range of t6 is
30~90 minutes.
7. the control method of air conditioner coolant according to claim 1 not foot protection, it is characterised in that: the value range of t1 is
3~10 minutes, the value range of t3 was 2~6 minutes, and the value range of t4 is≤100 seconds, and the value range of t5 is 8~12 seconds.
8. the control method of air conditioner coolant according to claim 2 not foot protection, it is characterised in that: the value range of t2 is
60~100 seconds, the value range of Tx was 2~4 DEG C, and the value range of Ty is 2~5 DEG C.
9. the control method of air conditioner coolant according to claim 1 or 3 not foot protection, it is characterised in that: the value model of Tm
Enclosing is 2~4 DEG C, and the value range of Tn is 2~5 DEG C.
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110274363B (en) * | 2019-06-26 | 2021-04-30 | 珠海格力电器股份有限公司 | Air conditioner control method and device and air conditioner |
| 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 |
| CN113432240B (en) * | 2021-06-30 | 2022-09-30 | 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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| CN1180823A (en) * | 1996-10-18 | 1998-05-06 | 松下电器产业株式会社 | Refrigerating apparatus |
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