CN104132421A - Control method and control system for air conditioner - Google Patents
Control method and control system for air conditioner Download PDFInfo
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- CN104132421A CN104132421A CN201410331210.9A CN201410331210A CN104132421A CN 104132421 A CN104132421 A CN 104132421A CN 201410331210 A CN201410331210 A CN 201410331210A CN 104132421 A CN104132421 A CN 104132421A
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Abstract
The invention provides a control method and a control system for an air conditioner. An auxiliary heater is arranged in an outdoor unit of the air conditioner. The control method for the air conditioner comprises the steps that when the air conditioner works in a heating mode, the outdoor environment temperature is detected; if the outdoor environment temperature is lower than a preset temperature value, the auxiliary heater is controlled to work, and the initial heating power of the auxiliary heater is set according to the difference value between the preset temperature value and the outdoor environment temperature. According to the technical scheme, when the air conditioner works in the heating mode, the initial heating power of the auxiliary heater can be set flexibly according to the outdoor environment temperature, the situation that the frosting problem of an outdoor unit heat exchanger cannot be solved due to the fact that the initial heating power is too low can be avoided, and the situation that the power consumption of the air conditioner is increased due to high initial heating power can be avoided at the same time.
Description
Technical field
The present invention relates to air-conditioner technical field, in particular to a kind of control method of air-conditioner and a kind of control system of air-conditioner.
Background technology
At present; when air-conditioner carries out work with heating mode in low temperature environment; conventionally there will be outdoor unit heat exchanger Yin Wendu compared with situation low and frosting; cause the air quantity of off-premises station to reduce, heating effect variation; in order to continue to carry out work under heating mode; air-conditioner all can carry out defrost operation at set intervals, causes heating effect discontinuous, affects user's experience.Meanwhile, because air-conditioner is when entering defrosting mode from heating mode, need to switch corresponding valve body (as cross valve), and while entering heating mode by defrosting mode, also need the corresponding corresponding valve body that switches, frequent switching valve easily causes valve body wearing and tearing, affects the service life of valve body.
In order to address the above problem, in correlation technique, proposed to arrange the scheme of auxiliary heater in air-conditioner, with when outdoor temperature is lower, starts auxiliary heater and heat, avoid outdoor unit heat exchanger frosting.Yet due to after starting auxiliary heater, auxiliary heater all heats with single heating power, may occur that outdoor temperature is not too low on the one hand, but the higher problem of the heating power of auxiliary heater, increased the power consumption of air-conditioner; Also may occur that on the other hand outdoor temperature is lower, but the problem of the heating power deficiency of auxiliary heater causes effectively solving the problem of outdoor unit heat exchanger frosting.
Therefore the heating power that, how can adjust neatly auxiliary heater according to the residing environment of outdoor unit heat exchanger becomes technical problem urgently to be resolved hurrily.
Summary of the invention
The present invention is intended at least solve one of technical problem existing in prior art or correlation technique.
For this reason, one object of the present invention is to have proposed a kind of when air-conditioner carries out work with heating mode, the initial heating power of auxiliary heater can be set flexibly according to outdoor environment temperature, to avoid initial heating power too low and cannot solve the problem of outdoor unit heat exchanger frosting, can avoid initial heating power compared with high and increase air-conditioner control method and the control system of air-conditioner power consumption simultaneously.
For achieving the above object, embodiment according to a first aspect of the invention, a kind of control method of air-conditioner has been proposed, wherein, in the off-premises station of described air-conditioner, be provided with auxiliary heater, the control method of described air-conditioner, comprising: when described air-conditioner carries out work with heating mode, detect outdoor environment temperature; If described outdoor environment temperature is less than predetermined temperature value, controls described auxiliary heater and carry out work, and according to the difference between described predetermined temperature value and described outdoor environment temperature, set the initial heating power of described auxiliary heater.
The control method of air-conditioner according to an embodiment of the invention, by when outdoor environment temperature being detected and be less than predetermined temperature value, control auxiliary heater and carry out work, auxiliary heater can be heated outdoor unit heat exchanger indirectly by adding hot-air, and to avoid, the temperature of outdoor unit heat exchanger is too low to be caused frosting and affects the heating effect of air-conditioner.
By set the initial heating power of auxiliary heater according to the difference between predetermined temperature value and outdoor environment temperature, while making difference at predetermined temperature value and outdoor environment temperature larger, be that outdoor environment temperature is when lower, can be the higher initial heating power of auxiliary heater setting, effectively avoid outdoor unit heat exchanger frosting, alleviate the load that heats of air-conditioner; And in the difference of predetermined temperature value and outdoor environment temperature hour, when outdoor environment temperature is not too low, can be the lower initial heating power of auxiliary heater setting, to avoid under the prerequisite of outdoor heat exchanger frosting, reduce the power consumption of air-conditioner.Wherein, the outdoor environment temperature in the time of can be according to outdoor unit heat exchanger frosting is set above-mentioned predetermined temperature value.
In addition, the control method of air-conditioner according to the above embodiment of the present invention, can also have following additional technical characterictic:
According to one embodiment of present invention, the initial heating power of described auxiliary heater becomes positive correlation with described difference.
The control method of air-conditioner according to an embodiment of the invention, specifically, above-mentioned predetermined temperature value and the difference of outdoor environment temperature are larger, illustrate that outdoor environment temperature is lower, therefore the easier frosting of outdoor unit heat exchanger need to be the larger initial heating power of auxiliary heater setting; And in the difference of predetermined temperature value and outdoor environment temperature more hour, illustrate that outdoor environment temperature is relatively also just higher, outdoor unit heat exchanger is difficult for frosting relatively, therefore, can be the lower initial heating power of auxiliary heater setting, to guarantee, under the prerequisite of outdoor unit heat exchanger frost-free, effectively reducing the power consumption of air-conditioner.
According to one embodiment of present invention, before detecting described outdoor environment temperature, also comprise: judge whether the time that described air-conditioner carries out work with heating mode reach the scheduled time, if so, carry out the step that detects described outdoor environment temperature.
The control method of air-conditioner according to an embodiment of the invention, by determining that the time that air-conditioner carries out work with heating mode reached after the scheduled time, detect again outdoor environment temperature, and carry out the follow-up step that the initial heating power of auxiliary heater is set, make it possible to guarantee air-conditioner with heating mode, carry out work and stable after process accordingly again, avoid air-conditioner when work not stablize, with regard to the step of execution startup auxiliary heater, to affect the stability of system.
According to one embodiment of present invention, after setting the initial heating power of described auxiliary heater, also comprise: the air outlet temperature that detects outdoor unit heat exchanger; According to the difference of the air outlet temperature of described predetermined temperature value and described outdoor unit heat exchanger, adjust the heating power of described auxiliary heater.
The control method of air-conditioner according to an embodiment of the invention, by adjust the heating power of auxiliary heater according to the difference of the air outlet temperature of predetermined temperature value and outdoor unit heat exchanger, can guarantee that the heating power of auxiliary heater is adapted to the practical working situation of outdoor unit heat exchanger, when as lower in the air outlet temperature at outdoor unit heat exchanger, increase the heating power of auxiliary heater, effectively avoid outdoor unit heat exchanger frosting; When the air outlet temperature of outdoor unit heat exchanger is higher, reduce the heating power of auxiliary heater, to reduce the power consumption of air-conditioner.In addition, because the air outlet temperature of outdoor unit heat exchanger is lower than outdoor environment temperature, and the duty that can more directly reflect outdoor unit heat exchanger, therefore, by regulate the heating power of auxiliary heater according to the difference between the air outlet temperature of predetermined temperature value and outdoor unit heat exchanger, can guarantee that the heating power after regulating is adapted to the working condition of outdoor unit heat exchanger more.Wherein, the process that detects the air outlet temperature of outdoor unit heat exchanger in this embodiment and adjust the heating power of auxiliary heater both can be carried out in real time, also can carry out according to some cycles.
As a kind of preferred embodiment, every the scheduled time, carry out air outlet temperature described in one-time detection, and the operation of adjusting the heating power of described auxiliary heater according to the difference between the air outlet temperature of described predetermined temperature value and described outdoor unit heat exchanger.
The control method of air-conditioner according to an embodiment of the invention, because the air outlet temperature of outdoor unit heat exchanger variable quantity is at short notice less, if detected temperatures always, and adjust the heating power of auxiliary heater, may increase the processing load of system, therefore, can carry out single treatment every the scheduled time, the scheduled time can be adjusted according to actual condition.
According to one embodiment of present invention, the difference between the air outlet temperature of described predetermined temperature value and described outdoor unit heat exchanger with adjust after the heating power of described auxiliary heater become positive correlation.
The control method of air-conditioner according to an embodiment of the invention, specifically, the difference of the air outlet temperature of above-mentioned predetermined temperature value and outdoor unit heat exchanger is larger, the temperature that outdoor unit heat exchanger is described is lower, therefore the easier frosting of outdoor unit heat exchanger, need to heighten the heating power of auxiliary heater; And in the difference of the air outlet temperature of predetermined temperature value and outdoor unit heat exchanger more hour, the temperature that outdoor unit heat exchanger is described is relatively also just higher, outdoor unit heat exchanger is difficult for frosting relatively, therefore, can turn down the heating power of auxiliary heater, to guarantee, under the prerequisite of outdoor unit heat exchanger frost-free, effectively reducing the power consumption of air-conditioner.
According to the embodiment of second aspect present invention, a kind of control system of air-conditioner has also been proposed, wherein, in the off-premises station of described air-conditioner, be provided with auxiliary heater, the control system of described air-conditioner, comprise: temperature detecting unit, for when described air-conditioner carries out work with heating mode, detects outdoor environment temperature; Control module, while being less than predetermined temperature value for the described outdoor environment temperature detecting at described temperature detecting unit, control described auxiliary heater and carry out work, and according to the difference between described predetermined temperature value and described outdoor environment temperature, set the initial heating power of described auxiliary heater.
The control system of air-conditioner according to an embodiment of the invention, by when outdoor environment temperature being detected and be less than predetermined temperature value, control auxiliary heater and carry out work, auxiliary heater can be heated outdoor unit heat exchanger indirectly by adding hot-air, and to avoid, the temperature of outdoor unit heat exchanger is too low to be caused frosting and affects the heating effect of air-conditioner.
By set the initial heating power of auxiliary heater according to the difference between predetermined temperature value and outdoor environment temperature, while making difference at predetermined temperature value and outdoor environment temperature larger, be that outdoor environment temperature is when lower, can be the higher initial heating power of auxiliary heater setting, effectively avoid outdoor unit heat exchanger frosting, alleviate the load that heats of air-conditioner; And in the difference of predetermined temperature value and outdoor environment temperature hour, when outdoor environment temperature is not too low, can be the lower initial heating power of auxiliary heater setting, to avoid under the prerequisite of outdoor heat exchanger frosting, reduce the power consumption of air-conditioner.Wherein, the outdoor environment temperature in the time of can be according to outdoor unit heat exchanger frosting is set above-mentioned predetermined temperature value.
According to one embodiment of present invention, the initial heating power of described auxiliary heater becomes positive correlation with described difference.
The control system of air-conditioner according to an embodiment of the invention, specifically, above-mentioned predetermined temperature value and the difference of outdoor environment temperature are larger, illustrate that outdoor environment temperature is lower, therefore the easier frosting of outdoor unit heat exchanger need to be the larger initial heating power of auxiliary heater setting; And in the difference of predetermined temperature value and outdoor environment temperature more hour, illustrate that outdoor environment temperature is relatively also just higher, outdoor unit heat exchanger is difficult for frosting relatively, therefore, can be the lower initial heating power of auxiliary heater setting, to guarantee, under the prerequisite of outdoor unit heat exchanger frost-free, effectively reducing the power consumption of air-conditioner.
According to one embodiment of present invention, also comprise: judging unit, for judging whether the time that described air-conditioner carries out work with heating mode reaches the scheduled time; Described temperature detecting unit specifically for, when described judging unit judges that time that described air-conditioner carries out work with heating mode reaches the described scheduled time, detect described outdoor environment temperature.
The control system of air-conditioner according to an embodiment of the invention, by determining that the time that air-conditioner carries out work with heating mode reached after the scheduled time, detect again outdoor environment temperature, and carry out the follow-up process that the initial heating power of auxiliary heater is set, make it possible to guarantee air-conditioner with heating mode, carry out work and stable after process accordingly again, avoid air-conditioner when work not stablize, with regard to the step of execution startup auxiliary heater, to affect the stability of system.
According to one embodiment of present invention, described temperature detecting unit also for: after described control module is set the initial heating power of described auxiliary heater, detect the air outlet temperature of outdoor unit heat exchanger; Described control module, also for the difference of the air outlet temperature of the described outdoor unit heat exchanger detecting according to described predetermined temperature value and described temperature detecting unit, is adjusted the heating power of described auxiliary heater.
The control system of air-conditioner according to an embodiment of the invention, by adjust the heating power of auxiliary heater according to the difference of the air outlet temperature of predetermined temperature value and outdoor unit heat exchanger, can guarantee that the heating power of auxiliary heater is adapted to the practical working situation of outdoor unit heat exchanger, when as lower in the air outlet temperature at outdoor unit heat exchanger, increase the heating power of auxiliary heater, effectively avoid outdoor unit heat exchanger frosting; When the air outlet temperature of outdoor unit heat exchanger is higher, reduce the heating power of auxiliary heater, to reduce the power consumption of air-conditioner.In addition, because the air outlet temperature of outdoor unit heat exchanger is lower than outdoor environment temperature, and the duty that can more directly reflect outdoor unit heat exchanger, therefore, by regulate the heating power of auxiliary heater according to the difference between the air outlet temperature of predetermined temperature value and outdoor unit heat exchanger, can guarantee that the heating power after regulating is adapted to the working condition of outdoor unit heat exchanger more.Wherein, the process that detects the air outlet temperature of outdoor unit heat exchanger in this embodiment and adjust the heating power of auxiliary heater both can be carried out in real time, also can carry out according to some cycles.
As a kind of preferred embodiment, described temperature detecting unit specifically for, every the scheduled time, detect the once air outlet temperature of described outdoor unit heat exchanger; Described control module specifically for, the difference between the air outlet temperature of the described outdoor heat exchanger at every turn detecting according to described predetermined temperature value and described temperature detecting unit is adjusted the heating power of described auxiliary heater.
The control system of air-conditioner according to an embodiment of the invention, because the air outlet temperature of outdoor unit heat exchanger variable quantity is at short notice less, if detected temperatures always, and adjust the heating power of auxiliary heater, may increase the processing load of system, therefore, can carry out single treatment every the scheduled time, the scheduled time can be adjusted according to actual condition.
According to one embodiment of present invention, the difference between the air outlet temperature of described predetermined temperature value and described outdoor unit heat exchanger with adjust after the heating power of described auxiliary heater become positive correlation.
The control system of air-conditioner according to an embodiment of the invention, specifically, the difference of the air outlet temperature of above-mentioned predetermined temperature value and outdoor unit heat exchanger is larger, the temperature that outdoor unit heat exchanger is described is lower, therefore the easier frosting of outdoor unit heat exchanger, need to heighten the heating power of auxiliary heater; And in the difference of the air outlet temperature of predetermined temperature value and outdoor unit heat exchanger more hour, the temperature that outdoor unit heat exchanger is described is relatively also just higher, outdoor unit heat exchanger is difficult for frosting relatively, therefore, can turn down the heating power of auxiliary heater, to guarantee, under the prerequisite of outdoor unit heat exchanger frost-free, effectively reducing the power consumption of air-conditioner.
Additional aspect of the present invention and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage accompanying drawing below combination obviously and is easily understood becoming the description of embodiment, wherein:
Fig. 1 shows the schematic flow diagram of the control method of air-conditioner according to an embodiment of the invention;
Fig. 2 shows the schematic block diagram of the control system of air-conditioner according to an embodiment of the invention;
Fig. 3 shows the schematic flow diagram of the control method of air-conditioner according to another embodiment of the invention.
The specific embodiment
In order more clearly to understand above-mentioned purpose of the present invention, feature and advantage, below in conjunction with the drawings and specific embodiments, the present invention is further described in detail.It should be noted that, in the situation that not conflicting, the application's embodiment and the feature in embodiment can combine mutually.
A lot of details have been set forth in the following description so that fully understand the present invention; but; the present invention can also adopt other to be different from other modes described here and implement, and therefore, protection scope of the present invention is not subject to the restriction of following public specific embodiment.
In the off-premises station of the air-conditioner described in following examples, be provided with auxiliary heater.
Fig. 1 shows the schematic flow diagram of the control method of air-conditioner according to an embodiment of the invention.
As shown in Figure 1, the control method of air-conditioner according to an embodiment of the invention, comprising: step 102, when described air-conditioner carries out work with heating mode, detects outdoor environment temperature; Step 104, if described outdoor environment temperature is less than predetermined temperature value, the auxiliary heater of controlling in off-premises station carries out work, and according to the difference between described predetermined temperature value and described outdoor environment temperature, sets the initial heating power of described auxiliary heater.
By when outdoor environment temperature being detected and be less than predetermined temperature value, control auxiliary heater and carry out work, auxiliary heater can be heated outdoor unit heat exchanger indirectly by adding hot-air, and to avoid, the temperature of outdoor unit heat exchanger is too low to be caused frosting and affects the heating effect of air-conditioner.
By set the initial heating power of auxiliary heater according to the difference between predetermined temperature value and outdoor environment temperature, while making difference at predetermined temperature value and outdoor environment temperature larger, be that outdoor environment temperature is when lower, can be the higher initial heating power of auxiliary heater setting, effectively avoid outdoor unit heat exchanger frosting, alleviate the load that heats of air-conditioner; And in the difference of predetermined temperature value and outdoor environment temperature hour, when outdoor environment temperature is not too low, can be the lower initial heating power of auxiliary heater setting, to avoid under the prerequisite of outdoor heat exchanger frosting, reduce the power consumption of air-conditioner.Wherein, the outdoor environment temperature in the time of can be according to outdoor unit heat exchanger frosting is set above-mentioned predetermined temperature value.
In addition, the control method of air-conditioner according to the above embodiment of the present invention, can also have following additional technical characterictic:
According to one embodiment of present invention, the initial heating power of described auxiliary heater becomes positive correlation with described difference.
Specifically, above-mentioned predetermined temperature value and the difference of outdoor environment temperature are larger, illustrate that outdoor environment temperature is lower, and therefore the easier frosting of outdoor unit heat exchanger need to be the larger initial heating power of auxiliary heater setting; And in the difference of predetermined temperature value and outdoor environment temperature more hour, illustrate that outdoor environment temperature is relatively also just higher, outdoor unit heat exchanger is difficult for frosting relatively, therefore, can be the lower initial heating power of auxiliary heater setting, to guarantee, under the prerequisite of outdoor unit heat exchanger frost-free, effectively reducing the power consumption of air-conditioner.
According to one embodiment of present invention, before detecting described outdoor environment temperature, also comprise: judge whether the time that described air-conditioner carries out work with heating mode reach the scheduled time, if so, carry out the step that detects described outdoor environment temperature.
By determining that the time that air-conditioner carries out work with heating mode reached after the scheduled time, detect again outdoor environment temperature, and carry out the follow-up step that the initial heating power of auxiliary heater is set, make it possible to guarantee air-conditioner with heating mode, carry out work and stable after process accordingly again, avoid air-conditioner when work not stablize, with regard to the step of execution startup auxiliary heater, to affect the stability of system.
According to one embodiment of present invention, after setting the initial heating power of described auxiliary heater, also comprise: the air outlet temperature that detects outdoor unit heat exchanger; According to the difference of the air outlet temperature of described predetermined temperature value and described outdoor unit heat exchanger, adjust the heating power of described auxiliary heater.
By adjust the heating power of auxiliary heater according to the difference of the air outlet temperature of predetermined temperature value and outdoor unit heat exchanger, can guarantee that the heating power of auxiliary heater is adapted to the practical working situation of outdoor unit heat exchanger, when as lower in the air outlet temperature at outdoor unit heat exchanger, increase the heating power of auxiliary heater, effectively avoid outdoor unit heat exchanger frosting; When the air outlet temperature of outdoor unit heat exchanger is higher, reduce the heating power of auxiliary heater, to reduce the power consumption of air-conditioner.In addition, because the air outlet temperature of outdoor unit heat exchanger is lower than outdoor environment temperature, and the duty that can more directly reflect outdoor unit heat exchanger, therefore, by regulate the heating power of auxiliary heater according to the difference between the air outlet temperature of predetermined temperature value and outdoor unit heat exchanger, can guarantee that the heating power after regulating is adapted to the working condition of outdoor unit heat exchanger more.Wherein, the process that detects the air outlet temperature of outdoor unit heat exchanger in this embodiment and adjust the heating power of auxiliary heater both can be carried out in real time, also can carry out according to some cycles.
As a kind of preferred embodiment, every the scheduled time, carry out air outlet temperature described in one-time detection, and the operation of adjusting the heating power of described auxiliary heater according to the difference between the air outlet temperature of described predetermined temperature value and described outdoor unit heat exchanger.
Because the air outlet temperature of outdoor unit heat exchanger variable quantity is at short notice less, if detected temperatures always, and adjust the heating power of auxiliary heater, may increase the processing load of system, therefore, can carry out single treatment every the scheduled time, the scheduled time can be adjusted according to actual condition.
According to one embodiment of present invention, the difference between the air outlet temperature of described predetermined temperature value and described outdoor unit heat exchanger with adjust after the heating power of described auxiliary heater become positive correlation.
Therefore specifically, the difference of the air outlet temperature of above-mentioned predetermined temperature value and outdoor unit heat exchanger is larger, illustrates that the temperature of outdoor unit heat exchanger is lower, and the easier frosting of outdoor unit heat exchanger need to be heightened the heating power of auxiliary heater; And in the difference of the air outlet temperature of predetermined temperature value and outdoor unit heat exchanger more hour, the temperature that outdoor unit heat exchanger is described is relatively also just higher, outdoor unit heat exchanger is difficult for frosting relatively, therefore, can turn down the heating power of auxiliary heater, to guarantee, under the prerequisite of outdoor unit heat exchanger frost-free, effectively reducing the power consumption of air-conditioner.
Fig. 2 shows the schematic block diagram of the control system of air-conditioner according to an embodiment of the invention.
As shown in Figure 2, the control system of air-conditioner according to an embodiment of the invention, comprising: 202 temperature detecting units, for when described air-conditioner carries out work with heating mode, detect outdoor environment temperature; 204 control modules, while being less than predetermined temperature value for the described outdoor environment temperature detecting at described 202 temperature detecting units, the auxiliary heater of controlling in off-premises station carries out work, and according to the difference between described predetermined temperature value and described outdoor environment temperature, set the initial heating power of described auxiliary heater.
By when outdoor environment temperature being detected and be less than predetermined temperature value, control auxiliary heater and carry out work, auxiliary heater can be heated outdoor unit heat exchanger indirectly by adding hot-air, and to avoid, the temperature of outdoor unit heat exchanger is too low to be caused frosting and affects the heating effect of air-conditioner.
By set the initial heating power of auxiliary heater according to the difference between predetermined temperature value and outdoor environment temperature, while making difference at predetermined temperature value and outdoor environment temperature larger, be that outdoor environment temperature is when lower, can be the higher initial heating power of auxiliary heater setting, effectively avoid outdoor unit heat exchanger frosting, alleviate the load that heats of air-conditioner; And in the difference of predetermined temperature value and outdoor environment temperature hour, when outdoor environment temperature is not too low, can be the lower initial heating power of auxiliary heater setting, to avoid under the prerequisite of outdoor heat exchanger frosting, reduce the power consumption of air-conditioner.Wherein, the outdoor environment temperature in the time of can be according to outdoor unit heat exchanger frosting is set above-mentioned predetermined temperature value.
According to one embodiment of present invention, the initial heating power of described auxiliary heater becomes positive correlation with described difference.
Specifically, above-mentioned predetermined temperature value and the difference of outdoor environment temperature are larger, illustrate that outdoor environment temperature is lower, and therefore the easier frosting of outdoor unit heat exchanger need to be the larger initial heating power of auxiliary heater setting; And in the difference of predetermined temperature value and outdoor environment temperature more hour, illustrate that outdoor environment temperature is relatively also just higher, outdoor unit heat exchanger is difficult for frosting relatively, therefore, can be the lower initial heating power of auxiliary heater setting, to guarantee, under the prerequisite of outdoor unit heat exchanger frost-free, effectively reducing the power consumption of air-conditioner.
According to one embodiment of present invention, also comprise: judging unit 206, for judging whether the time that described air-conditioner carries out work with heating mode reaches the scheduled time; Described temperature detecting unit 202 specifically for, when described judging unit 206 judges that time that described air-conditioner carries out work with heating mode reaches the described scheduled time, detect described outdoor environment temperature.
By determining that the time that air-conditioner carries out work with heating mode reached after the scheduled time, detect again outdoor environment temperature, and carry out the follow-up process that the initial heating power of auxiliary heater is set, make it possible to guarantee air-conditioner with heating mode, carry out work and stable after process accordingly again, avoid air-conditioner when work not stablize, with regard to the step of execution startup auxiliary heater, to affect the stability of system.
According to one embodiment of present invention, described temperature detecting unit 202 also for: after described control module 204 is set the initial heating power of described auxiliary heater, detect the air outlet temperature of outdoor unit heat exchanger; Described control module 204, also for the difference of the air outlet temperature of the described outdoor unit heat exchanger detecting according to described predetermined temperature value and described temperature detecting unit 202, is adjusted the heating power of described auxiliary heater.
By adjust the heating power of auxiliary heater according to the difference of the air outlet temperature of predetermined temperature value and outdoor unit heat exchanger, can guarantee that the heating power of auxiliary heater is adapted to the practical working situation of outdoor unit heat exchanger, when as lower in the air outlet temperature at outdoor unit heat exchanger, increase the heating power of auxiliary heater, effectively avoid outdoor unit heat exchanger frosting; When the air outlet temperature of outdoor unit heat exchanger is higher, reduce the heating power of auxiliary heater, to reduce the power consumption of air-conditioner.In addition, because the air outlet temperature of outdoor unit heat exchanger is lower than outdoor environment temperature, and the duty that can more directly reflect outdoor unit heat exchanger, therefore, by regulate the heating power of auxiliary heater according to the difference between the air outlet temperature of predetermined temperature value and outdoor unit heat exchanger, can guarantee that the heating power after regulating is adapted to the working condition of outdoor unit heat exchanger more.Wherein, the process that detects the air outlet temperature of outdoor unit heat exchanger in this embodiment and adjust the heating power of auxiliary heater both can be carried out in real time, also can carry out according to some cycles.
As a kind of preferred embodiment, described temperature detecting unit 202 specifically for, every the scheduled time, detect the once air outlet temperature of described outdoor unit heat exchanger; Described control module 204 specifically for, the difference between the air outlet temperature of the described outdoor heat exchanger at every turn detecting according to described predetermined temperature value and described temperature detecting unit 202 is adjusted the heating power of described auxiliary heater.
Because the air outlet temperature of outdoor unit heat exchanger variable quantity is at short notice less, if detected temperatures always, and adjust the heating power of auxiliary heater, may increase the processing load of system, therefore, can carry out single treatment every the scheduled time, the scheduled time can be adjusted according to actual condition.
According to one embodiment of present invention, the difference between the air outlet temperature of described predetermined temperature value and described outdoor unit heat exchanger with adjust after the heating power of described auxiliary heater become positive correlation.
Therefore specifically, the difference of the air outlet temperature of above-mentioned predetermined temperature value and outdoor unit heat exchanger is larger, illustrates that the temperature of outdoor unit heat exchanger is lower, and the easier frosting of outdoor unit heat exchanger need to be heightened the heating power of auxiliary heater; And in the difference of the air outlet temperature of predetermined temperature value and outdoor unit heat exchanger more hour, the temperature that outdoor unit heat exchanger is described is relatively also just higher, outdoor unit heat exchanger is difficult for frosting relatively, therefore, can turn down the heating power of auxiliary heater, to guarantee, under the prerequisite of outdoor unit heat exchanger frost-free, effectively reducing the power consumption of air-conditioner.
Fig. 3 shows the schematic flow diagram of the control method of air-conditioner according to another embodiment of the invention.
As shown in Figure 3, the control method of air-conditioner according to another embodiment of the invention, comprising:
Step 302, judges whether the start-up mode of air-conditioner is heating mode, and now auxiliary heater, in off-position, if so, performs step 304; Otherwise, carry out other processing.
Step 304, when judging that air-conditioner starts with heating mode, timing also judges whether to reach the first Preset Time, if so, performs step 306; Otherwise, return to step 304.
Step 306, when judging that time that air-conditioner carries out work with heating mode reaches the first Preset Time, detects outdoor environment temperature.
Step 308, judges that outdoor environment temperature, whether lower than reference temperature T1, if so, performs step 312; Otherwise, execution step 310.
Step 310, when judging that outdoor environment temperature is not less than reference temperature T1, air-conditioner enters conventional heating mode, does not start auxiliary heater.
Step 312, when judging outdoor environment temperature lower than reference temperature T1, sets the initial heating power of auxiliary heater according to the difference of outdoor environment temperature and reference temperature T1, to start auxiliary heater, heat.
Step 314, timing also judges whether to reach the second Preset Time, if; Perform step 316; Otherwise; Return to described step 314.
Step 316, the air outlet temperature of sensing chamber's external heat exchanger, and by the difference between air outlet temperature and reference temperature T2, adjust the heating power of auxiliary heater.After the heating power of adjusting auxiliary heater, return to step 314 and proceed timing, to realize every the second Preset Time, the object all heating power of auxiliary heater being regulated.
Wherein, reference temperature T1 and reference temperature T2 can be same temperature value.
More than be described with reference to the accompanying drawings technical scheme of the present invention, consider the scheme that auxiliary heater is set in air-conditioner proposing in correlation technique, because auxiliary heater heats with single heating power, may occur that outdoor temperature is not too low on the one hand, but the problem that the heating power of auxiliary heater is higher, has increased the power consumption of air-conditioner; Also may occur that on the other hand outdoor temperature is lower, but the problem of the heating power deficiency of auxiliary heater causes effectively solving the problem of outdoor unit heat exchanger frosting.Therefore, the present invention proposes a kind of control program of new air-conditioner, can be when air-conditioner carries out work with heating mode, the initial heating power of auxiliary heater can be set flexibly according to outdoor environment temperature, and in the course of the work, according to the air outlet temperature of outdoor heat exchanger, adjust flexibly the heating power of auxiliary heater, the heating power of having avoided auxiliary heater is too low and cannot solve the problem of outdoor unit heat exchanger frosting, and the heating power that can avoid auxiliary heater is simultaneously compared with high and increase the power consumption of air-conditioner.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (12)
1. a control method for air-conditioner, is provided with auxiliary heater in the off-premises station of described air-conditioner, it is characterized in that, comprising:
When described air-conditioner carries out work with heating mode, detect outdoor environment temperature;
If described outdoor environment temperature is less than predetermined temperature value, controls described auxiliary heater and carry out work, and according to the difference between described predetermined temperature value and described outdoor environment temperature, set the initial heating power of described auxiliary heater.
2. the control method of air-conditioner according to claim 1, is characterized in that, the initial heating power of described auxiliary heater becomes positive correlation with described difference.
3. the control method of air-conditioner according to claim 1, is characterized in that, before detecting described outdoor environment temperature, also comprises:
Judge whether the time that described air-conditioner carries out work with heating mode reach the scheduled time, if so, carry out the step that detects described outdoor environment temperature.
4. the control method of air-conditioner according to claim 1, is characterized in that, after setting the initial heating power of described auxiliary heater, also comprises:
Detect the air outlet temperature of outdoor unit heat exchanger;
According to the difference of the air outlet temperature of described predetermined temperature value and described outdoor unit heat exchanger, adjust the heating power of described auxiliary heater.
5. the control method of air-conditioner according to claim 4, is characterized in that,
Every the scheduled time, carry out air outlet temperature described in one-time detection, and the operation of adjusting the heating power of described auxiliary heater according to the difference between the air outlet temperature of described predetermined temperature value and described outdoor unit heat exchanger.
6. according to the control method of the air-conditioner described in claim 4 or 5, it is characterized in that, the difference between the air outlet temperature of described predetermined temperature value and described outdoor unit heat exchanger with adjust after the heating power of described auxiliary heater become positive correlation.
7. a control system for air-conditioner, is provided with auxiliary heater in the off-premises station of described air-conditioner, it is characterized in that, comprising:
Temperature detecting unit, for when described air-conditioner carries out work with heating mode, detects outdoor environment temperature;
Control module, while being less than predetermined temperature value for the described outdoor environment temperature detecting at described temperature detecting unit, control described auxiliary heater and carry out work, and according to the difference between described predetermined temperature value and described outdoor environment temperature, set the initial heating power of described auxiliary heater.
8. the control system of air-conditioner according to claim 7, is characterized in that, the initial heating power of described auxiliary heater becomes positive correlation with described difference.
9. the control system of air-conditioner according to claim 7, is characterized in that, also comprises: judging unit, for judging whether the time that described air-conditioner carries out work with heating mode reaches the scheduled time;
Described temperature detecting unit specifically for, when described judging unit judges that time that described air-conditioner carries out work with heating mode reaches the described scheduled time, detect described outdoor environment temperature.
10. the control system of air-conditioner according to claim 7, is characterized in that,
Described temperature detecting unit also for:
After described control module is set the initial heating power of described auxiliary heater, detect the air outlet temperature of outdoor unit heat exchanger;
Described control module also for:
The difference of the air outlet temperature of the described outdoor unit heat exchanger detecting according to described predetermined temperature value and described temperature detecting unit, adjusts the heating power of described auxiliary heater.
The control system of 11. air-conditioners according to claim 10, is characterized in that,
Described temperature detecting unit specifically for, every the scheduled time, detect the once air outlet temperature of described outdoor unit heat exchanger;
Described control module specifically for, the difference between the air outlet temperature of the described outdoor heat exchanger at every turn detecting according to described predetermined temperature value and described temperature detecting unit is adjusted the heating power of described auxiliary heater.
12. according to the control system of the air-conditioner described in claim 10 or 11, it is characterized in that, the difference between the air outlet temperature of described predetermined temperature value and described outdoor unit heat exchanger with adjust after the heating power of described auxiliary heater become positive correlation.
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