CN114992824A - Control method and control device of air conditioner and air conditioner - Google Patents
Control method and control device of air conditioner and air conditioner Download PDFInfo
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- CN114992824A CN114992824A CN202210751169.5A CN202210751169A CN114992824A CN 114992824 A CN114992824 A CN 114992824A CN 202210751169 A CN202210751169 A CN 202210751169A CN 114992824 A CN114992824 A CN 114992824A
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- outdoor unit
- rotating speed
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/46—Improving electric energy efficiency or saving
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides a control method and a control device of an air conditioner and the air conditioner, wherein the control method comprises the following steps: when the air conditioner operates a heating function, judging whether the outdoor unit meets a frosting condition or not according to the operation data of the outdoor unit; if so, controlling to increase the running rotating speed of the outdoor unit fan; the operation data comprises the operation power of the outdoor unit fan and/or the operation noise of the outdoor unit and/or the air output of the outdoor unit. The invention solves the problem that the running rotating speed of the outdoor unit fan is kept unchanged, so that after the heat exchanger of the outdoor unit is frosted, the wind resistance of the heat exchanger of the outdoor unit is increased, the air quantity of the outdoor unit is seriously attenuated, the heating quantity of the air conditioner is relatively high in attenuation, the heating energy efficiency is low, and the use experience of a user is influenced.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a control method and a control device of an air conditioner and the air conditioner.
Background
When the air conditioner is operated for heating, because the outdoor environment temperature is lower, the condition that the heat exchanger of the outdoor unit frosts is difficult to avoid.
In the related art, there is at least one of the following technical problems: the running rotating speed of the outdoor unit fan is kept unchanged, so that after the heat exchanger of the outdoor unit is frosted, the wind resistance of the heat exchanger of the outdoor unit is increased, the air quantity of the outdoor unit is seriously attenuated, the heating quantity of the air conditioner is high in attenuation, the heating energy efficiency is low, and the use experience of a user is influenced.
Disclosure of Invention
The invention solves the problem that the running rotating speed of the outdoor unit fan is kept unchanged, so that after the heat exchanger of the outdoor unit is frosted, the wind resistance of the heat exchanger of the outdoor unit is increased, the air quantity of the outdoor unit is seriously attenuated, the heating quantity of the air conditioner is relatively high in attenuation, the heating energy efficiency is low, and the use experience of a user is influenced.
In order to solve the above problems, the present invention provides a method for controlling an air conditioner, the air conditioner including an outdoor unit, the outdoor unit including an outdoor unit fan; the control method comprises the following steps: when the air conditioner operates a heating function, judging whether the outdoor unit meets a frosting condition or not according to the operation data of the outdoor unit; if so, controlling to increase the running rotating speed of the outdoor unit fan; the operation data comprises the operation power of the outdoor unit fan and/or the operation noise of the outdoor unit and/or the air output of the outdoor unit.
Compared with the prior art, the technical scheme has the following technical effects: on one hand, the humidity around the heat exchanger of the outdoor unit is reduced by increasing the flow rate of air around the heat exchanger of the outdoor unit, and the rate of frosting the heat exchanger of the outdoor unit again is reduced; on the other hand, the refrigerant in the outdoor unit heat exchanger evaporates and absorbs heat to refrigerate the air around the refrigerant, and the low-temperature cold air is taken out of the outdoor unit as fast as possible by increasing the rotating speed of the outdoor unit fan, so that the further aggravated frosting condition caused by long-time convergence of the low-temperature cold air around the outdoor unit heat exchanger is avoided, the heating attenuation rate of the outdoor unit during frosting is reduced to a certain extent, the defrosting period is prolonged, the heating comfort is further improved, and the user experience is improved.
In one example of the present invention, the outdoor unit includes an outdoor unit heat exchanger; the operational data includes a first operational noise value; the controlling to increase the operation rotation speed of the outdoor unit fan includes: controlling the running rotating speed of the outdoor unit fan to increase to a first running rotating speed; acquiring a first operation noise value corresponding to the first operation rotating speed; judging whether the first operation noise value meets a preset noise value or not; and if so, controlling the outdoor unit fan to keep the first operation rotating speed to operate.
Compared with the prior art, the technical scheme has the following technical effects: the air conditioner can ensure that a user feels heating comfort when the outdoor unit is in a frosted state, and can also ensure that the noise value generated by the outdoor unit is kept in a safe range, thereby avoiding discomfort of the user caused by an overlarge noise value.
In an example of the present invention, the determining whether the first operating noise value satisfies a preset noise value includes: judging whether the first operation noise value is smaller than the preset noise value or not; the judging whether the outdoor unit meets the frosting condition according to the operation data of the outdoor unit comprises the following steps: if not, controlling the outdoor unit fan to operate according to a preset operation rotating speed; the preset noise value is noise generated when the outdoor unit fan operates according to the preset operation rotating speed.
Compared with the prior art, the technical scheme has the following technical effects: furthermore, the use comfort of the user is improved.
In an example of the present invention, the operation data includes an operation power of the outdoor unit fan; the controlling to increase the operation rotation speed of the outdoor unit fan includes: acquiring the operating power of the outdoor unit fan; acquiring frosting degree information of an outdoor unit heat exchanger of the outdoor unit according to the running power; and controlling and adjusting the running rotating speed of the outdoor unit fan according to the frosting degree information.
Compared with the prior art, the technical scheme has the following technical effects: the frosting degree of the outdoor unit heat exchanger corresponding to the frosting degree information can be obtained, so that the running rotating speed of the outdoor unit fan is adjusted, and the running rotating speed is adjusted correspondingly according to different frosting degrees. For example, when the degree of frosting is low, the operating speed is increased and adjusted to a smaller extent, and when the degree of frosting is high, the operating speed is increased and adjusted to a larger extent. It will be appreciated that the overall energy consumption of the air conditioner will increase as the operating speed is higher. Therefore, the frosting degree is combined with the operation rotating speed, so that the heating comfort of the user can be ensured, and a certain energy consumption saving effect can be achieved.
In an example of the present invention, the controlling and adjusting the operation speed of the outdoor unit fan according to the frosting degree information includes: acquiring the power variation of the running power of the outdoor unit fan within a first preset time; wherein the power variation is Δ F; when the delta F is less than 0, judging that the frosting degree of the heat exchanger of the outdoor unit is increased within the first preset time; and controlling and increasing the running rotating speed of the outdoor unit fan.
Compared with the prior art, the technical scheme has the following technical effects: the outdoor unit is enabled to further reduce the heating attenuation rate when the outdoor unit is frosted under the frosting condition, the defrosting period is prolonged, the heating comfort is further improved, and the user experience is improved.
In one example of the present invention, the frosting degree information includes first frosting information and second frosting information; the controlling and adjusting the operation rotating speed of the outdoor unit fan according to the frosting degree information comprises the following steps: when the outdoor unit heat exchanger is at a first frost degree corresponding to the first frost information, controlling to increase the running rotating speed of the outdoor unit fan; and/or when the outdoor unit heat exchanger is in a second frosting degree corresponding to the second defrosting information, controlling the air conditioner to operate a defrosting function; wherein the operating power corresponding to the first degree of frosting is greater than the operating power corresponding to the second degree of frosting.
Compared with the prior art, the technical scheme has the following technical effects: in a specific example, whether the defrosting function of the air conditioner is controlled to operate is judged more accurately by detecting the frosting degree of the heat exchanger of the outdoor unit in real time, so that the frosting degree is avoided too serious, the rotating speed of the fan of the outdoor unit is increased, good heating energy efficiency cannot be maintained, and the possibility of using comfortableness of a user is reduced. Therefore, the outdoor unit can be more flexibly switched into the defrosting state in the frosting state, the frosting degree is prevented from being too low, the defrosting function is controlled to operate, and the energy consumption is increased.
In an example of the present invention, the obtaining the operating power of the outdoor unit fan includes: acquiring the operating power of the outdoor unit fan at intervals of t 1; or continuously acquiring the operating power of the outdoor unit fan.
Compared with the prior art, the technical scheme has the following technical effects: on one hand, the running power is obtained through intermittent detection, so that the influence of misjudgment on the frequent adjustment of the outdoor unit fan caused by frequent detection of the running frequency is avoided; on the other hand, the running power is obtained through continuous detection, so that the frosting condition corresponding to the running power is guaranteed to keep timeliness, and the accuracy of the running speed regulation is further improved.
In another aspect, the present invention also provides a control apparatus for an air conditioner, including: the acquisition module is used for acquiring operation data when the air conditioner operates a heating function; the judging module is used for judging whether the outdoor unit meets the frosting condition or not according to the operation data; the control module is used for controlling and adjusting the running rotating speed of an outdoor unit fan of the air conditioner; if the frosting condition is judged to be met, the control module is used for controlling and increasing the running rotating speed of the outdoor unit fan; the operation data comprises the operation power of the outdoor unit fan and/or the operation noise of the outdoor unit and/or the air output of the outdoor unit.
Compared with the prior art, the technical scheme has the following technical effects: the technical effects corresponding to any of the above technical solutions can be achieved, and details are not repeated here.
In still another aspect, the present invention further provides an air conditioner, wherein the control method according to any one of the above embodiments is operated.
Compared with the prior art, the technical scheme has the following technical effects: the technical effects of the technical solutions corresponding to any one of the above control schemes can be achieved, and are not described herein again.
After the technical scheme of the invention is adopted, the following technical effects can be achieved:
(1) on one hand, the flow velocity of air around the heat exchanger of the outdoor unit is increased, so that the humidity around the heat exchanger of the outdoor unit is reduced, and the rate of frosting of the heat exchanger of the outdoor unit again is reduced; on the other hand, as the refrigerant in the outdoor unit heat exchanger is evaporated and absorbs heat, the refrigerant plays a role in refrigerating the air around the outdoor unit heat exchanger, and the low-temperature cold air is taken out of the outdoor unit as fast as possible by increasing the rotating speed of the outdoor unit fan, so that the condition that the low-temperature cold air is converged around the outdoor unit heat exchanger for a long time to further aggravate frosting is avoided, the heating attenuation rate when the outdoor unit is frosted is reduced to a certain extent, the defrosting period is prolonged, the heating comfort is further improved, and the user experience is improved;
(2) the frosting degree of the outdoor unit heat exchanger is detected in real time, so that whether the running defrosting function of the air conditioner is controlled or not is judged more accurately, the frosting degree is avoided too seriously, the rotating speed of the outdoor unit fan is increased, good heating energy efficiency cannot be maintained, and the possibility of using comfortableness of a user is reduced. Therefore, the outdoor unit can be more flexibly switched into a defrosting state in the frosting state, the frosting degree is prevented from being too low, the defrosting function is controlled to operate, and the energy consumption is increased;
(3) the frosting degree of the outdoor unit heat exchanger corresponding to the frosting degree information can be obtained, so that the running rotating speed of the outdoor unit fan is adjusted, and the running rotating speed is adjusted correspondingly according to different frosting degrees. For example, when the degree of frosting is low, the operating speed is increased and adjusted to a smaller extent, and when the degree of frosting is high, the operating speed is increased and adjusted to a larger extent. It will be appreciated that the overall energy consumption of the air conditioner will increase as the operating speed is higher. Therefore, the frosting degree is combined with the operation rotating speed, so that the energy consumption can be saved to a certain extent when the good heating comfort of the user is ensured.
Drawings
Fig. 1 is a flowchart illustrating a control method of an air conditioner according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of a performance curve of an outdoor unit fan according to a first embodiment of the present invention.
Fig. 3 is a block diagram of a control device of an air conditioner according to a second embodiment of the present invention.
Description of the reference numerals:
100-a control device; 110-an acquisition module; 120-a judgment module; 130-control module.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
The first embodiment is as follows:
referring to fig. 1, which is a flowchart illustrating a control method of an air conditioner according to an embodiment of the present invention. The air conditioner includes, for example, an outdoor unit including, for example, an outdoor unit fan for blowing air around the outdoor unit heat exchanger out of a casing of the outdoor unit, and an outdoor unit heat exchanger. Specifically, the control method includes, for example:
s10, when the air conditioner operates the heating function, judging whether the outdoor unit meets the frosting condition according to the operation data of the outdoor unit;
s21, if yes, controlling to increase the running speed of the outdoor unit fan;
the operation data includes, for example, an operation power of the outdoor unit fan and/or an operation noise of the outdoor unit and/or an air output of the outdoor unit.
In one embodiment, when the air conditioner is operated for heating, it is difficult to avoid the frosting of the heat exchanger of the outdoor unit due to the low temperature of the outdoor environment. Therefore, after the outdoor unit operates for a period of time, the defrosting function needs to be started to defrost the heat exchanger of the outdoor unit. It should be noted that when the outdoor unit operates in a frosted state, the refrigerant in the heat exchange tube of the outdoor unit heat exchanger evaporates and absorbs heat, so that water vapor in the ambient air condenses on the outer wall of the heat exchange tube, especially between the fins on the outdoor unit heat exchanger, and the heat dissipation gaps between the adjacent fins are blocked by the frost, thereby greatly reducing the air delivery volume of the outdoor unit fan, and simultaneously reducing the work of the outdoor unit fan.
Furthermore, due to the frosting condition, the heating quantity attenuation rate of the air conditioner is high, so that the heating energy efficiency is low, and the use experience of a user is reduced.
Therefore, by combining the content of the technical scheme, under the condition of meeting the frosting condition, the operation rotating speed of the fan of the outdoor unit is controlled to be increased so as to increase the air output of the outdoor unit, and specifically, on one hand, the flow rate of the air around the heat exchanger of the outdoor unit is increased so as to reduce the humidity around the heat exchanger of the outdoor unit and slow down the rate of frosting again of the heat exchanger of the outdoor unit; on the other hand, because the refrigerant in the outdoor unit heat exchanger evaporates and absorbs heat, the refrigerant plays a role in refrigerating air around the outdoor unit heat exchanger, and the low-temperature cold air is taken out of the outdoor unit as fast as possible by increasing the rotating speed of the outdoor unit fan, so that the condition that the low-temperature cold air is converged around the outdoor unit heat exchanger for a long time to further aggravate frosting is avoided, the heating attenuation rate when the outdoor unit is frosted is reduced to a certain extent, the defrosting period is prolonged, the heating comfort is further improved, and the user experience is improved.
Further, it can be understood that when the outdoor heat exchanger frosts, the heat dissipation gaps between the heat exchanger fins of the outdoor heat exchanger are reduced, which results in a reduction in the air intake, and correspondingly, also results in a reduction in the air output. For the outdoor unit fan, the air volume is reduced under the same operation rotating speed, so that the work of the outdoor unit fan is reduced, and the operation power is reduced. The operating power curve of the outdoor unit fan will show a decreasing trend compared to an outdoor unit that is not frosted. When the heat dissipation gap is completely blocked, the air quantity conveyed by the outdoor unit fan is extremely small, the work is very small, and the running power is obviously reduced. Therefore, the running data of the air output and/or the running power can be obtained through detection, and the running data is used for judging the frosting condition of the outdoor unit.
In addition, it can be understood that when the air output is decreased, the operation noise generated by the operation of the outdoor unit is also decreased, and when the air output is increased, the operation noise is also increased. In short, compared with the operation of the outdoor unit in the non-frosted state, under the same outdoor unit fan rotation speed condition, the air output of the outdoor unit in the frosted state is smaller than that of the outdoor unit in the non-frosted state, and correspondingly, the noise value generated by the outdoor unit in the frosted state is smaller than that generated by the outdoor unit in the non-frosted state.
Therefore, the relationship between the air output and the operation noise can be utilized, and the frosting degree of the outdoor unit can be judged by detecting the operation noise value.
Preferably, the operational data comprises, for example, a first operational noise value; the step of controlling and increasing the running rotating speed of the outdoor unit fan specifically comprises the following steps:
s211, controlling the running rotating speed of the outdoor unit fan to be increased to a first running rotating speed;
s212, acquiring a first operation noise value corresponding to the first operation rotating speed;
s213, judging whether the first operation noise value meets a preset noise value;
and S214, if so, controlling the outdoor unit fan to keep running at the first running rotating speed.
In one embodiment, the preset noise value may be generated by the operation heating function of the outdoor unit in an unfrozen state, and when it is determined that the outdoor unit is in the frosted state, the operation noise value generated by the outdoor unit is reduced, for example, the current operation noise value is taken as an initial noise value, and thus the frosting degree at the current time can be determined according to a magnitude relationship between the initial noise value and the preset noise value. When the initial noise value is smaller than the preset noise value, the outdoor unit is judged to meet the frosting condition at the moment, namely, the outdoor unit is in a frosting state, and therefore the operation rotating speed of the outdoor unit fan is increased to the first operation rotating speed, the heating attenuation rate is improved and reduced when the outdoor unit is frosted, and the purpose of improving the heating comfort is achieved. It should be noted that, the first operation noise value corresponding to the first operation rotation speed is compared with the preset noise value to avoid that the excessive noise value is generated to reduce the use comfort of the user in the process of increasing the operation rotation speed. For example, if the first operating noise value satisfies the predetermined noise value, it may be understood that the first operating noise value is smaller than the predetermined noise value.
In contrast, when the first preset noise value does not satisfy the preset noise value, that is, the first preset noise value is greater than the preset noise value, the first operation noise value needs to be controlled to be reduced, so that the phenomenon that the operation of the outdoor unit generates an excessive noise value to reduce the user experience is avoided. Specifically, for example, the first operation rotation speed may be reduced to a second operation rotation speed, a second operation noise value is formed corresponding to the second operation rotation speed, and the above comparison process is repeated for the second operation noise value and the preset noise value until the adjusted noise value is close to or equal to the preset noise value, at which time, the outdoor unit is controlled to maintain the operation rotation speed corresponding to the noise value. Therefore, the heating comfort of the user can be ensured when the outdoor unit is in a frosted state, the noise value generated by the outdoor unit can be ensured to be kept in a safe range, and the discomfort of the user caused by an overlarge noise value can be avoided.
It should be noted that the maximum operation rotation speed for increasing the operation rotation speed of the outdoor unit fan needs to satisfy the safe operation rotation speed of the outdoor unit fan, that is, the maximum operation rotation speed is less than or equal to the safe operation rotation speed. The problem that the outdoor unit fan is easy to damage due to long-time running in a state of exceeding the safe running rotating speed is avoided.
Preferably, the determining whether the first operating noise value satisfies the preset noise value specifically includes:
s2131, judging whether the first operation noise value is smaller than a preset noise value;
judging whether the outdoor unit meets the frosting condition according to the operation data of the outdoor unit specifically comprises the following steps:
s22, if not, controlling the outdoor unit fan to operate according to the preset operation rotating speed; the preset noise value is noise generated when the outdoor unit fan operates according to a preset operation rotating speed. Furthermore, the use comfort of the user is improved.
Preferably, the operation data includes, for example, an operation power of the outdoor unit fan; step S21 specifically includes:
s215, obtaining the running power of the outdoor unit fan;
s216, acquiring frosting degree information of the heat exchanger of the outdoor unit according to the running power;
and S217, controlling and adjusting the running rotating speed of the outdoor unit fan according to the frosting degree information.
In a specific example, the operation rotating speed of the outdoor unit fan can be adjusted according to the frosting degree of the outdoor unit heat exchanger corresponding to the frosting degree information, so that the operation rotating speed can be adjusted correspondingly to different frosting degrees. For example, when the degree of frosting is low, the operating speed is increased and adjusted to a smaller extent, and when the degree of frosting is high, the operating speed is increased and adjusted to a larger extent. It will be appreciated that the overall energy consumption of the air conditioner will increase as the operating speed is higher. Therefore, the frosting degree is combined with the operation rotating speed, so that the energy consumption can be saved to a certain extent when the good heating comfort of the user is ensured.
Of course, for example, the operation rotation speed may be adjusted to a uniform value as long as the outdoor unit satisfies the frosting condition, so that the influence of frosting on heating comfort can be reduced as much as possible.
Preferably, the controlling and adjusting the operation rotating speed of the outdoor extension set according to the frosting degree information specifically comprises:
s2171, acquiring the power variation of the running power of the outdoor unit fan within a first preset time; wherein, the power variation is recorded as delta F;
s2172, when the delta F is less than 0, judging that the frosting degree of the heat exchanger of the outdoor unit is increased within a first preset time;
and S2173, controlling and improving the running rotating speed of the outdoor unit fan.
Specifically, the heating attenuation rate of the outdoor unit during frosting is further reduced under the frosting condition of the outdoor unit, the defrosting period is prolonged, the heating comfort is further improved, and the user experience is improved.
Preferably, the frosting degree information includes, for example, first frosting information and second frosting information; controlling and adjusting the running rotating speed of the outdoor unit fan according to the frosting degree information specifically comprises the following steps:
s2174, when the heat exchanger of the outdoor unit is in a first frost degree corresponding to the first frost information, controlling to increase the running rotating speed of the fan of the outdoor unit;
and/or S2175, when the outdoor heat exchanger is in the second frosting degree corresponding to the second defrosting information, controlling the air conditioner to operate the defrosting function. And the operating power corresponding to the first frosting degree is greater than the operating power corresponding to the second frosting degree.
In a specific example, whether the air conditioner is controlled to operate the defrosting function is more accurately judged by detecting the frosting degree of the heat exchanger of the outdoor unit in real time, so that the frosting degree is prevented from being too serious, the rotating speed of the fan of the outdoor unit cannot be increased, and the good heating energy efficiency cannot be maintained, and the use comfort of a user is further reduced. Therefore, the outdoor unit can be more flexibly switched into the defrosting state in the frosting state, the frosting degree is prevented from being too low, the defrosting function is controlled to operate, and the energy consumption is increased.
Referring to fig. 2, an abscissa Q of a coordinate system is an air output of the corresponding outdoor unit, and based on the above embodiment, in another embodiment, for example, the frosting degree of the outdoor unit can be divided into 3 frosting degrees, for example, thin frost, medium frost and thick frost can be taken. The operation rotating speed of the outdoor unit is taken as 920R/M, the current pipe temperature of the heat exchange pipe is detected and obtained to be 1 ℃, after the operation time t, the surface of the heat exchanger of the outdoor unit slowly frosts, then the pipe temperature begins to drop to 0 ℃, at the moment, the air volume begins to attenuate, the frosting is changed to thin frosting, and at the moment, the performance curve of the outdoor unit fan is changed from a point P11 to a point P12; it should be noted that the point P11 is an N1 curve, that is, the operation power corresponding to the state where the operation speed of the outdoor unit is 920R/M, and is obtained by intersecting with the impedance curve R1 of the heat exchanger of the outdoor unit. Because frost is formed to be thin frost, the impedance curve is changed from R1 to R2, and the point where the R2 curve intersects with the N1 curve is the point P12, that is, the point P12 is the operating power of the outdoor unit fan when the frost is thin. And because the operation power is correspondingly reduced from P11 to P12, in order to take the operation noise value of the outdoor fan not exceeding the preset noise value as the standard, the operation speed of the outdoor fan can be increased to n 2.
Further, after the operation rotation speed of the outdoor unit fan is increased to N2, the operation power of the outdoor unit fan is P21 at this time, that is, the power of the intersection point of the N2 curve and the impedance curve R2 continuously frosts to the thickness of the middle frost layer, the impedance curve at this time becomes R3, the operation power of the outdoor unit fan is continuously detected, when the frost layer is thick, the operation power of the outdoor unit fan becomes P22, and at this time, the operation rotation speed of the outdoor unit fan needs to be increased to N3 with the total noise value Y as a reference. The running speed curve at n3 is run to the defrosting pipe temperature, namely, defrosting is started. The three frost layers are thick, the running of the outdoor unit fan during frosting is effectively controlled according to the fan special effect curve of the outdoor unit fan, the running rotating speed of the outdoor unit fan during frosting is improved, and the efficiency of the whole air conditioner is effectively improved.
Wherein, a P3(n3) curve is an operating power P3 corresponding to the outdoor unit fan when the operating speed is n3, and correspondingly, a P2(n2) curve is an operating power P2 corresponding to the outdoor unit fan when the operating speed is n2, and a P1(n) curve is an operating power P1 corresponding to the outdoor unit fan when the operating speed is n 1; in addition, the operating speed of the outdoor unit fan corresponding to the N1 curve is N1, and the N2 and N3 curves are the same as the explanation of the N1 curve, which is not described herein again.
Preferably, the obtaining of the operation power of the outdoor unit fan specifically includes:
s2151, acquiring the running power of an outdoor unit fan at intervals of t 1;
or, S2152 continuously obtains the operation power of the outdoor unit fan. On one hand, the running power is obtained through intermittent detection, so that the influence of misjudgment on the frequent adjustment of the outdoor unit fan caused by frequent detection of the running frequency is avoided; on the other hand, the running power is obtained through continuous detection, so that the frosting condition corresponding to the running power is guaranteed to keep timeliness, and the accuracy of the running speed regulation is further improved.
Example two:
referring to fig. 3, it is a block diagram of a control device 100 of an air conditioner according to a second embodiment of the present invention. The control device 100 includes, for example, an acquisition module 110, a determination module 120, and a control module 130. The obtaining module 110 is configured to obtain operation data of the air conditioner during operation of the heating function; the judging module 120 is configured to judge whether the outdoor unit of the air conditioner meets a frosting condition according to the operation data; the control module 130 is used for controlling and adjusting the operation speed of an outdoor unit fan of the air conditioner; if the frosting condition is judged to be met, the control module is used for controlling and increasing the running rotating speed of the outdoor unit fan; specifically, the operation data includes, for example, an operation function of the outdoor unit fan and/or an operation noise of the outdoor unit and/or an air output of the outdoor unit.
Example three:
the third embodiment of the invention provides an air conditioner. Specifically, the air conditioner provided in this embodiment operates, for example, the control method described in the above embodiment.
Further, this embodiment can achieve the technical effect corresponding to any one of the technical solutions in the first embodiment, which is not described herein again.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (9)
1. A control method of an air conditioner comprises an outdoor unit, wherein the outdoor unit comprises an outdoor unit fan; the control method is characterized by comprising the following steps:
when the air conditioner operates a heating function, judging whether the outdoor unit meets a frosting condition or not according to the operation data of the outdoor unit;
if so, controlling to increase the running rotating speed of the outdoor unit fan;
the operation data comprises the operation power of the outdoor unit fan and/or the operation noise of the outdoor unit and/or the air output of the outdoor unit.
2. The control method of claim 1, wherein the outdoor unit comprises an outdoor unit heat exchanger; wherein the operational data comprises a first operational noise value; the controlling to increase the operation rotation speed of the outdoor unit fan includes:
controlling the running rotating speed of the outdoor unit fan to increase to a first running rotating speed;
acquiring a first operation noise value corresponding to the first operation rotating speed;
judging whether the first operation noise value meets a preset noise value or not;
and if so, controlling the outdoor unit fan to keep the first operation rotating speed to operate.
3. The control method according to claim 2,
the judging whether the first operating noise value meets a preset noise value includes: judging whether the first operation noise value is smaller than the preset noise value;
the judging whether the outdoor unit meets the frosting condition according to the operation data of the outdoor unit comprises the following steps:
if not, controlling the outdoor unit fan to operate according to a preset operation rotating speed;
the preset noise value is noise generated when the outdoor unit fan operates according to the preset operation rotating speed.
4. The control method of claim 1 or 2, wherein the operation data includes an operation power of the outdoor unit fan; the controlling to increase the operation rotation speed of the outdoor unit fan includes:
acquiring the operating power of the outdoor unit fan;
acquiring frosting degree information of an outdoor unit heat exchanger of the outdoor unit according to the running power;
and controlling and adjusting the running rotating speed of the outdoor unit fan according to the frosting degree information.
5. The control method of claim 4, wherein the controlling and adjusting the operation speed of the outdoor unit fan according to the frost formation degree information comprises:
acquiring the power variation of the running power of the outdoor unit fan within a first preset time; wherein the power variation is Δ F;
when the delta F is less than 0, judging that the frosting degree of the heat exchanger of the outdoor unit is increased within the first preset time;
and controlling and increasing the running rotating speed of the outdoor unit fan.
6. The control method according to claim 4, wherein the frost formation degree information includes first frost formation information and second defrosting information; the controlling and adjusting the operation rotating speed of the outdoor unit fan according to the frosting degree information comprises the following steps:
when the outdoor unit heat exchanger is at a first frost degree corresponding to the first frost information, controlling to increase the running rotating speed of the outdoor unit fan;
and/or when the outdoor unit heat exchanger is at a second frosting degree corresponding to the second defrosting information, controlling the air conditioner to operate a defrosting function;
wherein the operating power corresponding to the first degree of frosting is greater than the operating power corresponding to the second degree of frosting.
7. The control method of claim 4, wherein the obtaining the operating power of the outdoor unit fan comprises:
acquiring the operating power of the outdoor unit fan at intervals of t 1;
or continuously acquiring the operating power of the outdoor unit fan.
8. A control apparatus of an air conditioner, comprising:
the system comprises an acquisition module (110) for acquiring operation data of the air conditioner during operation of a heating function;
the judging module (120) is used for judging whether the outdoor unit of the air conditioner meets the frosting condition or not according to the operation data;
the control module (130) is used for controlling and adjusting the running rotating speed of an outdoor unit fan of the air conditioner;
if the frosting condition is judged to be met, the control module is used for controlling and increasing the running rotating speed of the outdoor unit fan; the operation data comprises the operation power of the outdoor unit fan and/or the operation noise of the outdoor unit and/or the air output of the outdoor unit.
9. An air conditioner is characterized in that the air conditioner comprises a shell,
operating the control method according to any one of claims 1 to 7.
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| CN202210751169.5A CN114992824A (en) | 2022-06-28 | 2022-06-28 | Control method and control device of air conditioner and air conditioner |
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| CN202210751169.5A CN114992824A (en) | 2022-06-28 | 2022-06-28 | Control method and control device of air conditioner and air conditioner |
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|---|---|---|---|---|
| US20120060530A1 (en) * | 2009-05-29 | 2012-03-15 | Daikin Industries, Ltd. | Air conditioner |
| CN107270479A (en) * | 2017-06-19 | 2017-10-20 | 广东美的暖通设备有限公司 | The control method and control system of outdoor fan of air conditioner |
| CN107830606A (en) * | 2017-11-28 | 2018-03-23 | 广东美的制冷设备有限公司 | Progress control method, device, air conditioner and computer-readable recording medium |
| CN112032855A (en) * | 2020-09-02 | 2020-12-04 | 青岛海信日立空调系统有限公司 | Outdoor machine of air conditioner |
| CN113028591A (en) * | 2021-02-05 | 2021-06-25 | 宁波奥克斯电气股份有限公司 | Air conditioner frosting delaying method, control device and air conditioner |
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2022
- 2022-06-28 CN CN202210751169.5A patent/CN114992824A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120060530A1 (en) * | 2009-05-29 | 2012-03-15 | Daikin Industries, Ltd. | Air conditioner |
| CN107270479A (en) * | 2017-06-19 | 2017-10-20 | 广东美的暖通设备有限公司 | The control method and control system of outdoor fan of air conditioner |
| CN107830606A (en) * | 2017-11-28 | 2018-03-23 | 广东美的制冷设备有限公司 | Progress control method, device, air conditioner and computer-readable recording medium |
| CN112032855A (en) * | 2020-09-02 | 2020-12-04 | 青岛海信日立空调系统有限公司 | Outdoor machine of air conditioner |
| CN113028591A (en) * | 2021-02-05 | 2021-06-25 | 宁波奥克斯电气股份有限公司 | Air conditioner frosting delaying method, control device and air conditioner |
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