CN109695937A - A kind of air-conditioner defrosting control method - Google Patents
A kind of air-conditioner defrosting control method Download PDFInfo
- Publication number
- CN109695937A CN109695937A CN201710981401.3A CN201710981401A CN109695937A CN 109695937 A CN109695937 A CN 109695937A CN 201710981401 A CN201710981401 A CN 201710981401A CN 109695937 A CN109695937 A CN 109695937A
- Authority
- CN
- China
- Prior art keywords
- air
- control method
- steps
- defrosting control
- conditioner
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Air Conditioning Control Device (AREA)
Abstract
The present invention provides a kind of air-conditioner defrosting control method, the method includes the steps: step 1: starting heating mode；Step 2: calculating motor output duty cycle；Step 3: judging whether motor output duty cycle meets defrosting condition, if so, step 4 is executed, if it is not, executing step 2；Step 4: executing defrosting operation.Air-conditioner defrosting control method of the present invention judges whether to defrosting judgement according to motor output duty cycle, and criterion is more rationally accurate.
Description
Technical field
The present invention relates to air-conditioning technical field, in particular to a kind of air-conditioner defrosting control method.
Background technique
When air-conditioning carries out indoor heating in winter, outdoor unit will appear frosting problem.Judge outside air conditioning chamber at present
Machine whether the method for frosting first is that: air-conditioner outdoor unit is judged according to the size of the difference of outer ring temperature and outdoor unit external disk temperature
Whether frosting, in this method, a threshold temperature is determined in advance, if the difference of outer ring temperature and external disk temperature is greater than this threshold value
Temperature, then be judged as air-conditioner outdoor unit frosting, and air-conditioning defrosts except defrosting system will start.But for knot same thickness
For frost, at a temperature of different outer rings, threshold temperature is different, for example has tied the frost of same thickness, when outer ring temperature=0 DEG C
When, outer ring temperature-external disk temperature=11 DEG C, and at outer circumstance temperature degree=- 10 DEG C, outer ring temperature-external disk temperature=8 DEG C is practical
In, in order to avoid there is frost not change, all the smaller of difference setting frostless mistake can be occurred when so easily causing outer ring temperature higher
Defrosting or thin frost defrosting situation, influence heating effect.It can be seen that using outer ring temperature and outdoor unit external disk temperature difference into
The judgment mode of row frosting and defrosting is not effective frosting defrosting judgment mode.
In the prior art, the judgment mode of air-conditioner defrosting is carried out also: under air conditioner heat-production operational mode, real-time detection
The heating operation electric current of air-conditioner outdoor unit motor；The frost layer for calculating air conditioner chamber's external heat exchanger according to heating operation electric current is thick
Degree；Judge whether frost thickness is greater than the first preset thickness；And judging feelings of the frost thickness greater than the first preset thickness
Under condition, control air conditioner enters Defrost operation.But when the power grid of air-conditioning access has phenomena such as surge to occur, it will lead to room
The heating operation electric current of outer electromechanics machine is excessive, will also result in the erroneous judgement of frosting thickness.
In view of problem above, the present invention is specifically proposed.
Summary of the invention
In view of this, the present invention is directed to propose a kind of air-conditioner defrosting control method, to overcome to frosting extent of disease severity
The problem of inaccuracy.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
A kind of air-conditioner defrosting control method, the method includes the steps:
Step 1: starting heating mode；
Step 2: calculating motor output duty cycle；
Step 3: judging whether motor output duty cycle meets defrosting condition, if so, step 4 is executed, if it is not, executing step
2；
Step 4: executing defrosting operation.
Further, after executing step 1, before executing step 2, the air-conditioner defrosting control method further include:
Step 101: whether judgement currently carries out defrosting detection, if so, 2 are thened follow the steps, if it is not, then terminating.
Further, after step 101 is judged as YES, before step 2, the method also includes steps:
Step 102: judge motor whether stable operation, if so, 2 are thened follow the steps, if it is not, then continuing to execute step 102.
Further, after step 4, the method also includes:
Step 401: being judged whether to exit defrosting operation according to external disk temperature, if so, 5 are thened follow the steps, if it is not, then executing
Step 4；Or
Judge whether motor output duty cycle is more than or equal to preset and exit duty ratio, if so, 5 are thened follow the steps, if it is not, then
Execute step 4；
Step 5: exiting defrosting operation.
Further, the step 3, specifically:
Step 301: judging whether current motor output duty cycle is less than or equal to default duty ratio, if so, thening follow the steps
4, if it is not, thening follow the steps 2.
Further, when the step 301 is judged as YES, the step 301 further include:
Judge whether continuous operating time is more than or equal to default runing time to compressor, if so, 4 are thened follow the steps,
If it is not, thening follow the steps 2.
Further, the default duty ratio is 1/4.
Further, the default duty ratio is 1/2, and the default runing time is 1h, or
The default duty ratio is 2/3, and the default runing time is 3h.
Further, the step 101 specifically:
Whether current judgement is to first power on either previous defrosting to terminate later heating operation again, if so, executing
Step 2.
Further, the step 102 specifically:
Judge whether the continuous service duration of motor is not less than default operation duration, if so, thening follow the steps 2.
Compared with the existing technology, air-conditioner defrosting control method of the present invention has the advantage that
Air-conditioner defrosting control method of the present invention judges whether to defrosting judgement according to motor output duty cycle, sentences
According to more rationally accurate.
Detailed description of the invention
The attached drawing for constituting a part of the invention is used to provide further understanding of the present invention, schematic reality of the invention
It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is a kind of air-conditioner defrosting control method schematic diagram that first embodiment of the invention provides；
Fig. 2 is a kind of air-conditioner defrosting control method schematic diagram that second embodiment of the invention provides；
Fig. 3 is a kind of air-conditioner defrosting control method schematic diagram that third embodiment of the invention provides；
Fig. 4 is a kind of air-conditioner defrosting control method schematic diagram that fourth embodiment of the invention provides；
Fig. 5 is a kind of air-conditioner defrosting control method schematic diagram that fifth embodiment of the invention provides；
Fig. 6 is a kind of air-conditioner defrosting control method schematic diagram that sixth embodiment of the invention provides；
Fig. 7 is a kind of air-conditioner defrosting control method schematic diagram that seventh embodiment of the invention provides；
Fig. 8 is a kind of air-conditioner defrosting control method schematic diagram that eighth embodiment of the invention provides.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
The present invention proposes a kind of air-conditioner defrosting control method.In the practical heating work of air-conditioning, when outer machine heat exchanger is frostless
Or Bao Shuanshi is only had, the windage of outdoor machine of air-conditioner is small, causes the motor load of air-conditioning larger, and the duty ratio of motor output is big；And
As air conditioner is run, external heat exchanger frosting thickens, thus the windage of outdoor machine of air-conditioner is caused to become larger, and the motor load of air-conditioning becomes
Small, motor output duty cycle becomes smaller.According to this phenomenon, outdoor machine of air-conditioner can be carried out by calculating the duty ratio of motor output
The judgement of frosting degree, and then carry out defrosting control.
As shown in Figure 1, the method includes steps for a kind of air-conditioner defrosting control method that first embodiment of the invention provides
It is rapid:
S1: start heating mode.
S2: motor output duty cycle is calculated.
S3: judging whether motor output duty cycle meets defrosting condition, if so, S4 is executed, if it is not, executing S2.
S4: defrosting operation is executed.
Specifically, may include duty ratio computing module in the control computer board of air-conditioning, the duty ratio computing module is used
In the PWM waveform duty ratio that calculating air conditioner motor currently exports in real time, since the duty ratio and motor load of motor output are in just
The big motor load for illustrating air-conditioning of duty ratio of correlativity, motor output is big, and for the outdoor machine of air-conditioner normally heated,
The motor load of air-conditioning is big, illustrates that the windage of outer machine is smaller, and outer machine apoplexy, which flows, to be more easier, that is, illustrates outer machine frosting
It is thinner, when judging whether duty ratio meets certain condition, when usually judging that duty ratio numerical value is less than preset duty cycle threshold,
Computer board can control air conditioner and carry out defrosting operation.
In second embodiment of the invention, as shown in Fig. 2, on the basis of first embodiment, after executing step S1,
Before executing step S2, the air-conditioner defrosting control method further include:
S101: whether judgement currently carries out defrosting detection, if so, S2 is executed, if it is not, then terminating.
In general, carrying out defrosting detection needs a specific condition, otherwise air-conditioning is possible to defrost at any time
At this moment detection is possible to air conditioner motor also not steady the case where operating occur, accounts for when to causing even running non-to motor
Sky be easy to cause the erroneous judgement of frosting degree than the case where being judged, specifically, may determine that it is current whether be first power on or
Person is that previous defrosting terminates later heating operation again, if so, thening follow the steps S2.
In third embodiment of the invention, as shown in figure 3, being judged as on the basis of second embodiment in step S101
After being, before S2, the method also includes steps:
S102: judge motor whether stable operation, if so, S2 is thened follow the steps, if it is not, then continuing to execute S102.
More accurate electricity price duty ratio in order to obtain needs judging that motor enters steady operational status and then hold
Row S2, specifically, may determine that whether the continuous service duration of motor is not less than default operation duration, if so, determining motor
Stable operation, then execute S2, and the default operation duration is usually 5 minutes.
In fourth embodiment of the invention, as shown in figure 4, on the basis of 3rd embodiment, it is after step s4, described
Method further include:
S401: judged whether to exit defrosting operation according to external disk temperature, if so, S5 is executed, if it is not, then executing S4.
S5: defrosting operation is exited.
When external disk reaches at or above default external disk temperature threshold value, illustrate that frosting has removed or except thin, can stop
Defrosting operation is exited in defrosting.Or
Judge whether motor output duty cycle is more than or equal to preset and exit duty ratio, if so, 5 are thened follow the steps, if it is not, then
Execute step 4.
When motor output duty cycle be more than or equal to it is default exit duty ratio when, illustrate that external disk frosting thickness is little, can
To exit defrosting operation.
In fifth embodiment of the invention, as shown in figure 5, on the basis of fourth embodiment, the S3 specifically can be with
Are as follows:
S301: judging whether current motor output duty cycle is less than or equal to 1/4 duty ratio M, if so, S4 is executed, if it is not,
Then execute S2.
If motor output duty cycle≤1/4 duty ratio M, illustrate that motor output duty cycle very little, corresponding explanation are outer
Machine frosting has arrived at certain thickness, needs to carry out defrosting operation.
In sixth embodiment of the invention, as shown in fig. 6, on the basis of fourth embodiment, the S3 specifically can be with
Are as follows:
S302: judging whether current motor output duty cycle is less than or equal to 1/2 duty ratio M, and compressor is continuously transported
Row is more than or equal to 1h, if so, S4 is executed, if it is not, then executing S2.
If continuous operation is more than or equal to 1h for motor output duty cycle≤1/2 duty ratio M and compressor, motor it is negative
Though load may be bigger than the load judged in step S301, outer machine frosting is theoretically thin compared with what is judged in step S301,
Since continuous operation is more than or equal to 1h to compressor, outer machine frosting thickness can not be ignored, need to carry out defrosting operation.
In seventh embodiment of the invention, as shown in fig. 7, on the basis of fourth embodiment, the S3 specifically can be with
Are as follows:
S303: judging whether current motor output duty cycle is less than or equal to 2/3 duty ratio M, and compressor is continuously transported
Row is more than or equal to 3h, if so, S4 is executed, if it is not, then executing S2.
It is similar with method shown in embodiment six, if motor output duty cycle≤2/3 duty ratio M and compressor is continuous
Operation is more than or equal to 3h, though then the load of motor may be bigger than the load judged in step S301 and step S302, outer machine knot
Frost is theoretically thin compared with judging in step S301 and step S302, but since continuous operation is more than or equal to compressor
3h has been running for the long period, and outer machine frosting thickness can not be ignored, and needs to carry out defrosting operation.
In eighth embodiment of the invention, as shown in figure 8, on the basis of fourth embodiment, the S3 specifically be can wrap
It includes:
S301: judging whether current motor output duty cycle is less than or equal to 1/4 duty ratio M, if so, S4 is executed, if it is not,
Then execute S302.
S302: judging whether current motor output duty cycle is less than or equal to 1/2 duty ratio M, and compressor is continuously transported
Row is more than or equal to 1h, if so, S4 is executed, if it is not, then executing S303.
S303: judging whether current motor output duty cycle is less than or equal to 2/3 duty ratio M, and compressor is continuously transported
Row is more than or equal to 3h, if so, S4 is executed, if it is not, then executing S2.
Interim judgement is carried out in the present embodiment to duty ratio, so that the result judged is more accurate.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of air-conditioner defrosting control method, which is characterized in that the method includes the steps:
Step 1: starting heating mode；
Step 2: calculating motor output duty cycle；
Step 3: judging whether motor output duty cycle meets defrosting condition, if so, step 4 is executed, if it is not, executing step 2；
Step 4: executing defrosting operation.
2. air-conditioner defrosting control method according to claim 1, which is characterized in that after executing step 1, execute step
Before 2, the air-conditioner defrosting control method further include:
Step 101: whether judgement currently carries out defrosting detection, if so, 2 are thened follow the steps, if it is not, then terminating.
3. air-conditioner defrosting control method according to claim 2, which is characterized in that after step 101 is judged as YES, step
Before rapid 2, the method also includes steps:
Step 102: judge motor whether stable operation, if so, 2 are thened follow the steps, if it is not, then continuing to execute step 102.
4. air-conditioner defrosting control method according to claim 3, which is characterized in that after step 4, the method is also wrapped
It includes:
Step 401: being judged whether to exit defrosting operation according to external disk temperature, if so, 5 are thened follow the steps, if it is not, thening follow the steps
4；Or
Judge whether motor output duty cycle is more than or equal to preset and exit duty ratio, if so, 5 are thened follow the steps, if it is not, then executing
Step 4；
Step 5: exiting defrosting operation.
5. air-conditioner defrosting control method according to claim 4, which is characterized in that the step 3, specifically:
Step 301: judge whether current motor output duty cycle is less than or equal to default duty ratio, if so, 4 are thened follow the steps, if
It is no, then follow the steps 2.
6. air-conditioner defrosting control method according to claim 4, which is characterized in that when the step 301 is judged as YES,
The step 301 further include:
Judge whether continuous operating time is more than or equal to default runing time to compressor, if so, 4 are thened follow the steps, if it is not,
Then follow the steps 2.
7. air-conditioner defrosting control method according to claim 5, which is characterized in that the default duty ratio is 1/4.
8. air-conditioner defrosting control method according to claim 6, which is characterized in that the default duty ratio is 1/2, and institute
Stating default runing time is 1h, or
The default duty ratio is 2/3, and the default runing time is 3h.
9. according to any air-conditioner defrosting control method of claim 2~8, which is characterized in that the step 101 is specific
Are as follows:
Whether current judgement is to first power on either previous defrosting to terminate later heating operation again, if so, thening follow the steps
2。
10. according to any air-conditioner defrosting control method of claim 3~8, which is characterized in that the step 102 is specific
Are as follows:
Judge whether the continuous service duration of motor is not less than default operation duration, if so, thening follow the steps 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710981401.3A CN109695937A (en) | 2017-10-20 | 2017-10-20 | A kind of air-conditioner defrosting control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710981401.3A CN109695937A (en) | 2017-10-20 | 2017-10-20 | A kind of air-conditioner defrosting control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109695937A true CN109695937A (en) | 2019-04-30 |
Family
ID=66225106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710981401.3A Pending CN109695937A (en) | 2017-10-20 | 2017-10-20 | A kind of air-conditioner defrosting control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109695937A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113883654A (en) * | 2021-11-11 | 2022-01-04 | 宁波奥克斯电气股份有限公司 | Control method of air conditioner, air conditioner and computer readable storage medium |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0252976A (en) * | 1988-08-17 | 1990-02-22 | Sanyo Electric Co Ltd | Cooling operation system of refrigerating storage |
| JPH06265244A (en) * | 1993-03-15 | 1994-09-20 | Toshiba Corp | Air conditioner |
| CN103175285A (en) * | 2013-03-26 | 2013-06-26 | 广东美的制冷设备有限公司 | Control circuit and control method of air-conditioner outdoor draught fan and air-conditioner |
| CN104456859A (en) * | 2013-09-12 | 2015-03-25 | 珠海格力电器股份有限公司 | Air conditioner and defrosting control method and device thereof |
| CN104913452A (en) * | 2015-06-03 | 2015-09-16 | 广东美的制冷设备有限公司 | Air conditioner and defrosting control method for same |
| CN106705377A (en) * | 2017-01-10 | 2017-05-24 | 美的集团武汉制冷设备有限公司 | Defrosting control method and system and heat pump type air conditioner |
| CN107208917A (en) * | 2014-11-26 | 2017-09-26 | 江森自控日立空调技术（香港）有限公司 | Air conditioner |
| CN107228451A (en) * | 2017-05-17 | 2017-10-03 | 青岛海尔空调器有限总公司 | Air conditioner defrosting control method |
-
2017
- 2017-10-20 CN CN201710981401.3A patent/CN109695937A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0252976A (en) * | 1988-08-17 | 1990-02-22 | Sanyo Electric Co Ltd | Cooling operation system of refrigerating storage |
| JPH06265244A (en) * | 1993-03-15 | 1994-09-20 | Toshiba Corp | Air conditioner |
| CN103175285A (en) * | 2013-03-26 | 2013-06-26 | 广东美的制冷设备有限公司 | Control circuit and control method of air-conditioner outdoor draught fan and air-conditioner |
| CN104456859A (en) * | 2013-09-12 | 2015-03-25 | 珠海格力电器股份有限公司 | Air conditioner and defrosting control method and device thereof |
| CN107208917A (en) * | 2014-11-26 | 2017-09-26 | 江森自控日立空调技术（香港）有限公司 | Air conditioner |
| CN104913452A (en) * | 2015-06-03 | 2015-09-16 | 广东美的制冷设备有限公司 | Air conditioner and defrosting control method for same |
| CN106705377A (en) * | 2017-01-10 | 2017-05-24 | 美的集团武汉制冷设备有限公司 | Defrosting control method and system and heat pump type air conditioner |
| CN107228451A (en) * | 2017-05-17 | 2017-10-03 | 青岛海尔空调器有限总公司 | Air conditioner defrosting control method |
Non-Patent Citations (1)
| Title |
|---|
| 秦晋蜀编著: "《建筑节能检测》", 31 December 2012 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113883654A (en) * | 2021-11-11 | 2022-01-04 | 宁波奥克斯电气股份有限公司 | Control method of air conditioner, air conditioner and computer readable storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101975440B (en) | Control method for relieving frosting of outdoor condenser of air conditioner | |
| CN104819542B (en) | Defrosting control method, device and the air conditioner of air conditioner | |
| CN103363614B (en) | Air-cooled cold and hot water air conditioning unit and defrosting control method and device thereof | |
| CN104567148B (en) | Air conditioner defrosting method and device | |
| CN104748308B (en) | The module machine system loads and the control method of off-load of a kind of optimization | |
| WO2018076981A1 (en) | Air conditioner, device and method for cold air prevention during heating for air conditioner | |
| CN106871355B (en) | The control method and system of heat pump type air conditioner, the auxiliary heat of heat pump type air conditioner electricity | |
| CN103575004B (en) | The method and apparatus of air-conditioner defrosting | |
| CN106766007B (en) | Air conditioner and method for improving comfort degree of air conditioner in defrosting process | |
| CN105157168A (en) | Dehumidification control method for air conditioner, controller and air conditioner | |
| JP2014236605A (en) | Management system of air-conditioner | |
| WO2020038114A1 (en) | Heating control method and air conditioner | |
| CN105091251B (en) | The control method and control device of transducer air conditioning | |
| CN110094831B (en) | Multi-split air conditioner and defrosting control method thereof | |
| CN105588267A (en) | Defrosting control method and device for automatically detecting frost quantity of heat pump system | |
| WO2019148973A1 (en) | Method performing automatic cleaning operation to prevent generation of condensate water, and air conditioner | |
| CN105972758B (en) | Defrosting control method, defrosting control device and the air conditioner of air conditioner | |
| CN107014035B (en) | Defrosting control method and device of air conditioner | |
| EP3524896B1 (en) | Defrost control method and heat pump system | |
| CN103940163A (en) | Defrosting control method and device | |
| CN107244212A (en) | Pump type heat electric automobile air conditioner defrosting control method based on humidity sensor technology | |
| CN110469991B (en) | Control method and device for defrosting of air conditioner and air conditioner | |
| CN106594982B (en) | The fan linkage formula Defrost method of air-conditioning | |
| CN106871341A (en) | Air-conditioner defrosting control method and device | |
| CN103868297A (en) | Heat pump type unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190430 |
|
| RJ01 | Rejection of invention patent application after publication |