Indoor unit anti-freeze control method and air conditioner for air conditioner
Technical field
The invention belongs to air conditioner technical fields, and in particular to a kind of indoor unit anti-freeze control method for air conditioner
And air conditioner.
Background technology
With the continuous improvement of people's living standards, people also proposed increasingly higher demands to living environment.In order to
Comfortable environment temperature, air conditioner is maintained to have become essential a kind of equipment in people's life.Normally, air conditioner packet
Indoor unit, outdoor unit and the circulation loop for connecting indoor unit and outdoor unit are included, the heat transferring medium in air conditioner is by following
Loop back path constantly exchanges heat between outdoor unit and indoor unit, to achieve the effect that change room temperature.When with air conditioner refrigerating operaton
For, the coil pipe of indoor unit is in the lower state of temperature always;At this point, if when indoor environment has higher levels of humidity, it is indoor
The coil pipe of machine is just easy to generate freezeout, and the generation of this freezeout can seriously affect the heat exchange efficiency of indoor unit, make
The heat transfer effect for obtaining air conditioner constantly weakens, and then influences the comfort level of indoor environment.Therefore, in air conditioner refrigerating operaton,
Air conditioner is necessary to ensure that the coil pipe of indoor unit does not generate freezeout.
In order to which the freezeout to indoor unit coil pipe is monitored, existing air conditioner usually all can be indoors on the coil pipe of machine
Mounting temperature sensor so that air conditioner can judge indoor unit coil pipe by the coil temperature of indoor unit freezes situation,
So that when freezeout occurs in indoor unit coil pipe, air conditioner can carry out deicing processing in time.But this monitoring method is deposited
The tapping condition for being fixed against heat exchanger is needed in the accuracy of a very big disadvantage, i.e., this monitoring method;Specifically, working as
When the tapping condition of indoor set heat exchanger is bad, if air conditioner only relies on and is provided with a branch of temperature sensor and is difficult to
The entire indoor unit coil pipe of accurate judgement freezes situation.Further, existing control method is all the disk by preset time point
Tube temperature degree judges the situation of freezing of indoor unit, this influence for taking the method judged to be highly susceptible to accidentalia and
Lead to error in judgement.These factors, which all easily lead to air conditioner, cannot accurately detect the situation of freezing of indoor unit, thus
Deicing processing can not just be carried out in time to indoor unit, the generation of such case can seriously affect the heat exchange efficiency of air conditioner, to
User experience is caused to decline.
Correspondingly, this field needs a kind of new indoor unit anti-freeze control method and air conditioner for air conditioner to solve
The certainly above problem.
Invention content
It is difficult pair in order to solve existing air conditioner by inner coil pipe temperature to solve the above problem in the prior art
The situation of freezing of indoor unit carries out accurate judgement, and it is existing take the method judged to be easy to the presence of accidental error,
The present invention provides a kind of indoor unit anti-freeze control method for air conditioner, the indoor unit anti-freeze control method includes
The following steps:In the case of air conditioner is in cooling condition, the electric current that an indoor fan is obtained every preset period of time is average
Value;Calculate the attenuation degree of the adjacent current average twice of the indoor fan;Judge whether to make according to the attenuation degree
Air conditioner gets in machine anti-freeze pattern.
Above-mentioned in the optimal technical scheme of the indoor unit anti-freeze control method of air conditioner, " calculating the interior
The step of attenuation degree of the adjacent current average twice of wind turbine " includes:The electric current that indoor fan is obtained in present period is flat
The current average of mean value and indoor fan in a upper period;Calculate the current average of the present period and described upper a period of time
The ratio of the current average of section.
Above-mentioned in the optimal technical scheme of the indoor unit anti-freeze control method of air conditioner, " according to the decaying
Degree judges whether that air conditioner is made to get in machine anti-freeze pattern " the step of include:If the electric current of the present period is flat
Mean value and the ratio of the current average of a upper period are less than the first preset value, then so that the air conditioner is got in machine anti-
Freezing mode;If the ratio of the current average of the current average of the present period and a upper period is not less than the
One preset value then makes the air conditioner maintain current refrigeration operating mode, does not get in machine anti-freeze pattern.
Above-mentioned in the optimal technical scheme of the indoor unit anti-freeze control method of air conditioner, first preset value
Arbitrary value between 0.85-0.95.
Above-mentioned in the optimal technical scheme of the indoor unit anti-freeze control method of air conditioner, first preset value
It is 0.9.
Above-mentioned in the optimal technical scheme of the indoor unit anti-freeze control method of air conditioner, the preset period of time to be
Arbitrary value between 5s-15s.
Above-mentioned in the optimal technical scheme of the indoor unit anti-freeze control method of air conditioner, the indoor unit to be antifreeze
It further includes the steps that judging whether to exit indoor unit anti-freeze pattern to tie control method, which includes:The air conditioner into
After entering indoor unit anti-freeze pattern, the ratio of the current average of present period and the current average of a upper period was calculated;
Judged whether that air conditioner is made to exit indoor unit anti-freeze pattern according to result of calculation.
Above-mentioned in the optimal technical scheme of the indoor unit anti-freeze control method of air conditioner, " according to result of calculation
Judge whether that air conditioner is made to exit indoor unit anti-freeze pattern " the step of include:If the current average of present period with it is upper
The ratio of the current average of one period is greater than or equal to the second preset value, then exits indoor unit anti-freeze pattern;Otherwise, make institute
It states air conditioner and maintains current indoor machine anti-freeze operating mode.
Above-mentioned in the optimal technical scheme of the indoor unit anti-freeze control method of air conditioner, second preset value
Arbitrary value between 1-2.
The present invention also provides a kind of air conditioner, the air conditioner includes controller, and the controller is configured to hold
The indoor unit anti-freeze control method for air conditioner described in row any of the above-described optimal technical scheme.
It will be appreciated to those of skill in the art that in the preferred technical solution of the present invention, the indoor unit anti-freeze
Control method includes:In the case of air conditioner is in cooling condition, the electric current of an indoor fan is obtained every preset period of time
Average value;Calculate the attenuation degree of the adjacent current average twice of the indoor fan;It is according to attenuation degree judgement
It is no that air conditioner is made to get in machine anti-freeze pattern.Indoor unit is freezed with the coil temperature in the prior art by indoor unit
The technical solution that situation is judged is compared, and the present invention judges the jelly of the indoor unit by the wind turbine electric current of the indoor unit
Situation is tied, the situation of freezing of the indoor unit is judged by inner coil pipe temperature to effectively prevent existing air conditioner
When, it is easy to the problem of influenced by other irrelevant factors and lead to erroneous judgement so that the accuracy that the air conditioner judges is able to
It is effectively promoted, and then dramatically ensures that the air conditioner can carry out accurate judgement to the situation of freezing of indoor unit.In addition,
The present invention is also used as basic parameter, and pass through the indoor fan adjacent two by using the current average of indoor fan
The attenuation degree of primary current average value is judged, to further improving the accuracy rate of judgement;In other words, it is just indoor
The electric current of wind turbine produces accidental fluctuation in measurement process, and the current average of indoor fan will not be made by very big shadow
It rings, the problem of erroneous judgement occurs due to the current fluctuation phenomenon of indoor fan to effectively prevent air conditioner, and then effectively keep away
Exempt from the problem of air conditioner frequently enters indoor unit anti-freeze pattern, influence air conditioner refrigeration effect because of erroneous judgement.
Further, in the preferred technical solution of the present invention, the indoor unit anti-freeze control method is by indoor fan
It was carried out in the ratio of the current average of a upper period and the first preset value in the current average and indoor fan of present period
Compare;If indoor fan present period current average and indoor fan the current average of a upper period ratio
Less than first preset value, then the air conditioner is made to get in machine anti-freeze pattern;If indoor fan is in present period
Current average and indoor fan the current average of a upper period ratio be greater than or equal to first preset value, then
The air conditioner is not set to get in machine anti-freeze pattern.That is, the present invention by by indoor fan in present period
Current average and indoor fan were compared to sentence in the ratio of the current average of a upper period with first preset value
The air conditioner that breaks gets in opportunity of machine anti-freeze pattern, due to the wind turbine electric current of the indoor unit can accurately reflect it is whole
A indoor unit freezes situation, without exist in the prior art only rely on local circumstance come when judging bulk freezing degree easily
There are problems that misjudgment phenomenon, so that the air conditioner judges that the indoor unit freezes the ability of degree and obtains high degree
Raising.
Further, on the basis of the above-mentioned control method for entering anti-freeze pattern about the indoor unit, this hair
It is bright to additionally provide a kind of control method exiting anti-freeze pattern about the indoor unit.In a preferred embodiment of the invention,
The indoor unit anti-freeze control method by indoor fan present period current average and indoor fan in a upper period
The ratio of current average be compared with the second preset value;If current average and room of the indoor fan in present period
Inner blower was greater than or equal to second preset value in the ratio of the current average of a upper period, then illustrated the indoor unit
Freeze situation to be improved;At this point, the air conditioner is made to exit indoor unit anti-freeze pattern.That is, the present invention is logical
Cross by indoor fan present period ratio and institute in the current average of a upper period of current average and indoor fan
It states the second preset value to be compared to judge the opportunity that the air conditioner exits indoor unit anti-freeze pattern, due to the indoor unit
Wind turbine electric current can accurately reflect entire indoor unit freeze situation, only rely on partial freezing in the prior art without existing
When judging bulk freezing degree easily there is misjudgment phenomenon in situation.Therefore, the present invention passes through the indoor fan
Current average can effectively improve judgement as basic parameter to judge that the indoor unit exits opportunity of anti-freeze pattern
Accuracy rate, to which the air conditioner be effectively ensured when exiting indoor unit anti-freeze pattern, the indoor unit has freezed situation
Through being improved comprehensively;Meanwhile the air conditioner can also after deicing fast quick-recovery normal refrigerating mode, and then effectively
Ensure the refrigeration effect of the air conditioner, improves user experience.
In addition, the present invention further provides a kind of air conditioner, the air conditioner packet based on the above technical solution
Controller is included, the controller is configured to execute the anti-freeze control method in above-mentioned optimal technical scheme, thus also has
The technique effect of standby above-mentioned anti-freeze control method, and compared to existing air conditioner, air conditioner of the invention by using
The current average of indoor fan makes the accuracy rate that air conditioner judges effectively improve as basic data, though due to
When the wind turbine electric current of indoor unit generates accidental fluctuation, the average value of multiple wind turbine electric currents will not be made greatly to reduce, so as to effective
It avoids air conditioner from misjudgment phenomenon occur due to the fluctuation of the wind turbine electric current of indoor unit, and then air conditioner is caused to frequently enter interior
Machine anti-freeze pattern, the problem of influencing air conditioner refrigeration effect.
Description of the drawings
Fig. 1 is the key step flow chart of the indoor unit anti-freeze control method of the present invention;
Fig. 2 is the specific steps flow chart of the indoor unit anti-freeze control method of the present invention.
Specific implementation mode
The preferred embodiment of the present invention described with reference to the accompanying drawings.It will be apparent to a skilled person that this
A little embodiments are used only for explaining the technical principle of the present invention, it is not intended that limit the scope of the invention.For example, although
In the application according to particular order describe the present invention method each step, but these be not sequentially it is restrictive,
Under the premise of without departing from the basic principle of the present invention, those skilled in the art can execute the step in a different order
Suddenly.
Based on the existing air conditioner proposed in background technology by inner coil pipe temperature be difficult to indoor unit freeze situation into
Row accurate judgement, and existing the method judged is taken to be easy to the presence of accidental error.In order to solve in the prior art
The above problem, the present invention provides a kind of indoor unit anti-freeze control methods for air conditioner.
Specifically, air conditioner of the invention includes indoor unit, as shown in Figure 1, the indoor unit anti-freeze controlling party of the present invention
Method mainly includes the following steps:
S1:In the case of air conditioner is in cooling condition, the electric current that an indoor fan is obtained every preset period of time is flat
Mean value;
S2:Calculate the attenuation degree of the adjacent current average twice of indoor fan;
S3:Judged whether that air conditioner is made to get in machine anti-freeze pattern according to attenuation degree.
The wind turbine size of current of those skilled in the art, the indoor unit can directly reflect entire indoor unit
Freeze degree;It is to determine due to the load of the wind turbine under certain rotating speed, corresponding wind turbine electric current is also true
Fixed.In other words, when the rotating speed of the wind turbine determines, if the windage of the wind turbine increases, i.e., when the load becomes large, wind turbine
Electric current also inherently becomes smaller;Meanwhile if the wind turbine electric current becomes smaller, illustrating that the load becomes large for the wind turbine, i.e., windage increases
Add, that is to say, that the indoor unit has generated freezeout.It is understood that the indoor unit to freeze situation tighter
Weight, the wind turbine electric current is with regard to smaller.The indoor unit anti-freeze control method of the present invention is by using the indoor wind in preset period of time
What the current average of machine judged the indoor unit as basic parameter freezes degree so that the air conditioner can be more accurate
Really the situation of freezing of the indoor unit is judged, effectively to avoid existing air conditioner from only relying on the ginseng of preset time point
Number is easy to lead to the problem of accidental error.
It should be noted that the present invention does not equal the mode of current value and the electric current of indoor fan that obtain indoor fan
The calculation of mean value imposes any restrictions.Preferably, arbitrary value of the preset period of time between 5s-15s;Certainly, this is not
It is restrictive, the concrete numerical value of preset period of time can be flexibly arranged in those skilled in the art in practical applications.
Referring next to Fig. 2, which is the specific steps flow chart of the indoor unit anti-freeze control method of the present invention.Such as Fig. 2
Shown, the indoor unit anti-freeze control method specifically includes the following steps:
S101:In the case of air conditioner is in cooling condition, current average of the acquisition indoor fan in present period
With indoor fan a upper period current average;
S102:Judged whether the ratio of the current average of present period and the current average of a upper period is less than first
Preset value;If so, thening follow the steps S104;If it is not, then executing step S103;
S103:Air conditioner is set to maintain present mode;
S104:Air conditioner is set to get in machine anti-freeze pattern;
S105:Whether the ratio of the current average and the current average of a upper period that judge present period is more than or waits
In the second preset value;If so, thening follow the steps S106;If it is not, then executing step S105 again;
S106:Air conditioner is set to exit indoor unit anti-freeze pattern.
Further, indoor fan is obtained in step S101 in the current average and indoor fan of present period upper
The current average of one period, so that the indoor unit anti-freeze control method can be according to the electric current of adjacent indoor fan twice
Average value judges that the indoor unit enters and exit the opportunity of anti-freeze pattern.Then in step s 102, when will be current
The current average of section and the ratio of the current average of a upper period are compared with the first preset value;According to present period
The comparison result of the ratio of current average and the current average of a upper period and first preset value, judges whether to make institute
It states air conditioner and gets in machine anti-freeze pattern.It should be noted that, although including the interior simultaneously in this preferred embodiment
Machine enters and exits the control method of anti-freeze pattern;But technical staff obviously can also be according to actual use demand voluntarily
Selected a portion control method is used.
Specifically, in step s 102, if the current average of present period and the current average of a upper period
Ratio is less than first preset value, then illustrates the indoor unit and just generate freezeout with faster freezing speed;At this point, holding
Row step S104, even if the air conditioner gets in machine anti-freeze pattern.If the current average of present period and upper one
The ratio of the current average of period is greater than or equal to first preset value, then illustrates that the indoor unit is serious there is no generating
Freezeout;At this point, step S103 is executed, even if the air conditioner maintains present mode of operation.
In addition it is also necessary to which explanation, those skilled in the art can voluntarily set according to the actual conditions of different air conditioners
The fixed indoor unit enters the anti-freeze measure taken when anti-freeze pattern.In the preferred embodiment, the air conditioner passes through
The frequency of compressor is reduced to 0.8 times of current frequency, so that the indoor unit freezes situation and can quickly obtain
Improve;Certainly, technical staff can also set anti-freeze pattern according to the actual conditions of different air conditioners.
It will be appreciated to those of skill in the art that preferably, first preset value be 0.85 to 0.95 between appoint
Meaning value;It is further preferred that first preset value is 0.9.Certainly this is not restrictive, and those skilled in the art can be with
The concrete numerical value of first preset value is flexibly set in practical applications, as long as can be sentenced by the separation that the first preset value determines
Whether the rate of decay of the wind turbine electric current of the disconnected indoor unit is too fast.It should be noted that the present invention is not indoor to obtaining
The method of wind turbine current average is limited in any way.
Further, in step S105, by the current average of present period and the current average of a upper period
Ratio is compared with the second preset value;According to the ratio of the current average of present period and the current average of a upper period
With the comparison result of second preset value, judge whether that the air conditioner is made to exit indoor unit anti-freeze pattern.If current
The ratio of the current average of period and the current average of a upper period is greater than or equal to second preset value, described in explanation
The situation of freezing of indoor unit has been effectively improved;At this point, step S106 is executed, even if the air conditioner exits indoor unit and prevents
Freezing mode.If it is default that the ratio of the current average of present period and the current average of a upper period is less than described second
Value, illustrate the indoor unit freezes situation still than more serious;At this point, executing step S105 again, i.e., judged again,
So as to the indoor unit freeze situation obtain improve when again row exit anti-freeze pattern.
It will be appreciated to those of skill in the art that preferably, second preset value is the arbitrary value between 1 to 2;When
So, this is not restrictive, and the specific number of the second preset value can be flexibly arranged in those skilled in the art in practical applications
Value, as long as freezing whether situation gradually improves by what the separation that second preset value determines can judge the indoor unit
.
Finally, it should be noted that above-described embodiment is the preferred embodiments of the invention, it is not intended as to the present invention
The limitation of protection domain.Those skilled in the art can be properly added or delete as needed one when actually using the present invention
Part steps, or exchange the sequence between different step.This basic principle changed not departing from the present invention, belongs to this
The protection domain of invention.
So far, it has been combined attached drawing and describes the preferred embodiments of the invention, still, those skilled in the art are easy reason
Solution, protection scope of the present invention are expressly not limited to these specific implementation modes.Before without departing from the principle of the present invention
It puts, those skilled in the art can make the relevant technologies feature equivalent change or replacement, after these changes or replacement
Technical solution fall within protection scope of the present invention.