CN109237714B - Air conditioner, control method thereof and storage medium - Google Patents

Air conditioner, control method thereof and storage medium Download PDF

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Publication number
CN109237714B
CN109237714B CN201811118840.2A CN201811118840A CN109237714B CN 109237714 B CN109237714 B CN 109237714B CN 201811118840 A CN201811118840 A CN 201811118840A CN 109237714 B CN109237714 B CN 109237714B
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air conditioner
wind wheel
blade angle
noise value
noise
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CN109237714A (en
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闫大富
张滔
周何杰
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Midea Group Co Ltd
Midea Group Wuhan Refrigeration Equipment Co Ltd
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Midea Group Co Ltd
Midea Group Wuhan Refrigeration Equipment Co Ltd
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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
    • 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
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24—Means for preventing or suppressing noise

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Fluid Mechanics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention discloses a control method of an air conditioner, wherein a counter-rotating fan is arranged in an air duct of the air conditioner, the counter-rotating fan comprises two wind wheels which are oppositely arranged, and the air conditioner also comprises a noise sensor for detecting the noise value generated by the air conditioner; the control method of the air conditioner comprises the following steps: acquiring a noise value acquired by the noise sensor in real time or in a timing manner; judging whether the noise value meets a noise reduction condition; and when the noise value meets the noise reduction condition, adjusting the structural parameters of the counter-rotating fan to reduce the noise value generated by the air conditioner, wherein the adjusted structural parameters are in a preset interval, and the structural parameters comprise the blade angle of the wind wheel and the distance between the two wind wheels. The invention also provides an air conditioner and a storage medium. The air conditioner solves the problem of disturbing residents on the premise of meeting the requirements of users.

Description

Air conditioner, control method thereof and storage medium
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioner, a control method thereof and a storage medium.
Background
The counter-rotating axial flow fan has the advantages of large air volume and outstanding pressure characteristics, and is always an ideal ventilation device for projects and mines. Although the counter-rotating axial flow fan can be applied to the field of air conditioners as disclosed in the prior art, the counter-rotating axial flow fan has the disadvantages of large volume and high noise, and if the counter-rotating axial flow fan is applied to a household air conditioner, a great disturbing effect is inevitably caused (in the related art, the noise value of the counter-rotating axial flow fan is 82db, the industrial and mining requirements are met to the maximum extent).
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides an air conditioner, a control method thereof and a storage medium, wherein the air conditioner is simple in structure and good in comfort.
In order to solve the technical problems, the invention provides a control method of an air conditioner, wherein a counter-rotating fan is arranged in an air duct of the air conditioner, the counter-rotating fan comprises two opposite wind wheels, and the air conditioner also comprises a noise sensor for detecting the noise value generated by the air conditioner; the control method of the air conditioner comprises the following steps:
acquiring a noise value acquired by the noise sensor in real time or in a timing manner;
judging whether the noise value meets a noise reduction condition;
and when the noise value meets the noise reduction condition, adjusting the structural parameters of the counter-rotating fan to reduce the noise value generated by the air conditioner, wherein the adjusted structural parameters are in a preset interval, and the structural parameters comprise the blade angle of the wind wheel and the distance between the two wind wheels.
In an embodiment, the step of adjusting the structural parameters of the counter-rotating fan includes:
determining a target noise value;
according to the target noise value and a first noise difference value of the noise value;
and adjusting the structural parameters of the counter-rotating fan according to the first noise difference value.
In an embodiment, the step of adjusting the structural parameters of the counter-rotating fan at least includes:
reducing the blade angle of at least one wind wheel, wherein the blade angle is an included angle between a first plane and a second plane, the included angle is an acute angle, the first plane is a tangent plane of the blade, a rotating shaft of the blade is positioned on the first plane, the second plane is a plane vertical to the rotating shaft of the wind wheel, and the adjusted blade angle of the wind wheel is positioned in a blade angle interval corresponding to the wind wheel;
and increasing the relative distance between the two wind wheels, wherein the adjusted relative distance is positioned in a preset distance interval.
In one embodiment, the counter-rotating fan includes a front wind wheel and a rear wind wheel, the distance between the front wind wheel and the air outlet is greater than the distance between the rear wind wheel and the air outlet, and the step of reducing the blade angle of at least one of the wind wheels includes:
and in a first blade angle interval, reducing the blade angle of the front wind wheel, wherein the blade angle interval corresponding to the front wind wheel is the first blade angle interval.
In an embodiment, after the step of reducing the blade angle of the front wind wheel, the method further includes:
acquiring a target noise value to periodically judge whether the noise value currently generated by the air conditioner is less than or equal to the target noise value;
and when the current noise value generated by the air conditioner is smaller than or equal to the target noise value, reducing the blade angle of the front wind wheel in the first blade angle interval, and increasing the blade angle of the rear wind wheel in the second blade angle interval, wherein the blade angle interval corresponding to the rear wind wheel is the second blade angle interval.
In an embodiment, after the step of periodically determining whether the noise value currently generated by the air conditioner is less than or equal to the target noise value, the method further includes:
when the current noise value generated by the air conditioner is larger than the target noise value, and the current blade angle of the front wind wheel is reduced to the minimum blade angle corresponding to the front wind wheel, the blade rotation degree of the front wind wheel is restored to the first blade angle, and the blade angle of the rear wind wheel is reduced in the second blade angle interval, wherein when the noise value meets the noise reduction condition, the blade angle of the front wind wheel is the first blade angle, and the minimum blade angle corresponding to the front wind wheel is the minimum blade angle in the blade angle interval corresponding to the front wind wheel.
In an embodiment, after the step of reducing the blade angle of the rear wind wheel, the method further includes:
the noise value that the air conditioner produced at present is greater than target noise value, just the blade angle of rear wind wheel reduces extremely during the minimum blade angle that rear wind wheel corresponds, will the blade angle of rear wind wheel resumes to second blade angle, and reduce in the first blade angle interval the front wind wheel and, reduce in the second blade angle interval the blade angle of rear wind wheel, wherein, judging when the noise value satisfies the noise reduction condition, the blade angle of rear wind wheel does the second blade angle, the minimum blade angle that rear wind wheel corresponds does the minimum blade angle between the blade angle interval that rear wind wheel corresponds.
In one embodiment, the step of decreasing the blade angle of the front rotor and increasing the blade angle of the rear rotor comprises:
and reducing the current blade angle of the front wind wheel to the minimum blade angle of the front wind wheel, and increasing the blade angle of the rear wind wheel according to the target noise value.
In one embodiment, the step of determining the target noise value includes:
judging whether the current time period is in a preset time period or not;
when the current time period is in a preset time period, taking a first preset threshold value as a target noise value;
and when the current time period is not in the preset time period, taking a second preset threshold value as a target noise value, wherein the first preset threshold value is smaller than the second preset threshold value.
In an embodiment, the counter-rotating fan includes two oppositely disposed wind wheels, and after the step of adjusting the structural parameters of the counter-rotating fan, the method further includes:
and reducing the rotating speed of at least one wind wheel, wherein the adjusted rotating speed of the wind wheel is in a preset rotating speed interval corresponding to the wind wheel.
In an embodiment, the step of determining whether the noise value satisfies a noise reduction condition includes:
determining a target noise value to judge whether the noise value is larger than the target noise value, wherein when the noise value is larger than the target noise value, the noise value is judged to meet a noise reduction condition;
or acquiring an environment noise value of the space where the air conditioner is located, calculating a second noise difference value between the noise value and the environment noise value, and judging whether the second noise difference value is larger than a preset difference value, wherein when the second noise difference value is larger than the preset difference value, the noise value is judged to meet a noise reduction condition.
In an embodiment, after the step of adjusting the structural parameters of the counter-rotating fan, the method further includes:
acquiring a setting parameter of the air conditioner and an environmental parameter of a space where the air conditioner is located in real time or in a timing manner, wherein the type of the setting parameter is the same as that of the environmental parameter;
judging whether the environmental parameters are matched with the set parameters or not, wherein the set parameters comprise one or more of set humidity, set temperature and set air volume;
and when the environmental parameters are matched with the set parameters, adjusting the structural parameters of the counter-rotating fan according to a preset parameter adjusting value so as to reduce the noise value generated by the air conditioner, wherein the adjusted structural parameters are in a preset interval, and the structural parameters comprise the blade angle of the wind wheel and the distance between the two wind wheels.
In order to solve the technical problem, the invention also provides an air conditioner, wherein a counter-rotating fan is arranged in an air duct of the air conditioner, the counter-rotating fan comprises two wind wheels which are oppositely arranged, and the air conditioner is also provided with a noise sensor for detecting the noise value generated by the air conditioner; the air conditioner further comprises a processor, a memory and a control program of the air conditioner stored on the memory and capable of running on the processor, wherein the control program of the air conditioner realizes the steps of the control method of the air conditioner when being executed by the processor.
In one embodiment, the noise sensor is disposed proximate to the counter-rotating fan.
In one embodiment, the two wind wheels are respectively arranged on the corresponding mounting brackets, a sliding device is arranged between the two mounting brackets, and the air conditioner drives the sliding device to adjust the relative distance between the two wind wheels.
In one embodiment, the sliding device comprises a screw rod, a nut matched with the screw rod and a plurality of sliding rods; the slide bar is arranged in the air duct, a plurality of through holes are formed in the mounting bracket, the slide bar penetrates through the through holes, the nut is arranged on the mounting bracket, the screw rod is sleeved on the nut, and one end of the screw rod is connected with the motor.
In one embodiment, the wind wheel includes a hub, a driving member, a plurality of connecting rods, and a plurality of blades, the driving member is disposed inside the hub, one end of the connecting rod is connected to the driving member, and the other end of the connecting rod passes through the cylindrical wall of the hub and is connected to the blades disposed outside the cylindrical wall of the hub.
In an embodiment, the driving member includes a driving wheel connected to a rotation shaft of the motor, a driving wheel and a driven wheel, the driving wheel is respectively engaged with the driving wheel and the driven wheel, the driven wheel is connected to the blades through the connecting rod, and the connecting rod is a rotation shaft of the blades.
In one embodiment, the rotation axis of the driving wheel is perpendicular to the rotation axis of the driven wheel.
In order to solve the above technical problem, the present invention further provides a storage medium storing a control program of an air conditioner, wherein the control program of the air conditioner, when executed by a processor, implements the control method of the air conditioner as described above.
According to the air conditioner, the control method thereof and the computer readable storage medium, when the counter-rotating fan is adopted for supplying air, the air conditioner acquires the noise value generated by the air conditioner and collected by the noise sensor in real time or at regular time, and when the noise value meets the noise reduction condition, the structural parameters of the counter-rotating fan are adjusted to reduce the noise value, so that the noise value generated by the air conditioner is reduced on the premise that the air conditioner meets the user requirement, and the problem that the air conditioner disturbs residents is solved.
Drawings
Fig. 1 is a schematic diagram of a hardware structure of an air conditioner according to an embodiment of the present invention;
FIG. 2 is a flow chart illustrating a control method of an air conditioner according to a first embodiment of the present invention;
FIG. 3 is a schematic structural diagram of an air conditioner according to the present invention;
FIG. 4 is a cross-sectional view of the cabinet air conditioner of FIG. 3 taken along line M-M;
FIG. 5 is a schematic view of the blade angle of the rotor in the counter-rotating fan according to the present invention;
FIG. 6 is a flow chart illustrating a control method of an air conditioner according to a second embodiment of the present invention;
FIG. 7 is a flow chart illustrating a control method of an air conditioner according to a third embodiment of the present invention;
FIG. 8 is a flowchart illustrating a fourth embodiment of a method for controlling an air conditioner according to the present invention;
FIG. 9 is a flow chart illustrating a fifth embodiment of a control method of an air conditioner according to the present invention;
FIG. 10 is a flowchart illustrating a sixth embodiment of a method for controlling an air conditioner according to the present invention;
FIG. 11 is a schematic structural view of a counter-rotating fan according to the present invention;
FIG. 12 is a schematic structural view of a rotor of a counter-rotating fan according to the present invention;
FIG. 13 is a blade configuration view of the wind turbine of FIG. 12;
fig. 14 is an exploded view of the vane and driven wheel of fig. 13.
The reference numbers illustrate:
Figure GDA0002754420740000051
Figure GDA0002754420740000061
the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The embodiments of the present invention are completed based on the following findings of the present inventors: in actual life, one of the reasons why the household air conditioner using the counter-rotating axial flow fan is not industrialized and scaled is that: an air conditioner using a counter-rotating axial flow fan has high noise, which is contrary to the household/indoor safety requirements. In the prior art, in order to solve the problem that the noise of the counter-rotating axial flow fan is almost exclusively designed on the structural parameters and the performance parameters of the counter-rotating wind wheel, even after the structural parameters and the performance parameters of the counter-rotating wind wheel are exhausted, the amount of the generated noise still has a far difference from the safety requirement (including the mute requirement) of the household equipment. Moreover, the application of the ventilation equipment of the engineering and the mine, such as the counter-rotating axial flow fan, to the household air conditioner has the following disadvantages: how to match and be compatible with the mute requirement of the counter-rotating axial flow fan and various operation modes of a household air conditioner: that is, different operation modes of the household air conditioner have different wind quality requirements (including air volume, air speed, humidity, freshness and the like), and the adjustment of the rotation speed of the rotary fan influences whether the wind quality requirements can be realized, so that the problem of how to realize matching and compatibility of the mute requirement of the rotary axial flow fan and multiple operation modes of the household air conditioner through the rotation speed adjustment of the wind wheel is a difficult point.
Based on the problems, the inventor finds that the noise value generated by the air conditioner can be reduced by adjusting the structural parameters of the counter-rotating fan, so that the noise value generated by the air conditioner is reduced on the premise that the air conditioner meets the requirements of users, and the problem that the air conditioner disturbs people is solved.
As one implementation, the air conditioner may be as shown in fig. 1.
The embodiment of the invention relates to an air conditioner, which comprises: a processor 1001, such as a CPU, a memory 1002, a communication bus 1003, a counter-rotating fan 1004, and a noise sensor 1005. The counter-rotating fan 1004 and the noise sensor 1005 are arranged at an air outlet of the air conditioner, and the communication bus 1003 is used for realizing connection and communication among the components.
The memory 1002 may be a high-speed RAM memory or a non-volatile memory (e.g., a disk memory). As shown in fig. 1, a control program of an air conditioner may be included in the memory 1003 as one type of computer storage medium; and the processor 1001 may be configured to call a control program of the air conditioner stored in the memory 1002 and perform the following operations:
acquiring a noise value acquired by the noise sensor in real time or in a timing manner;
judging whether the noise value meets a noise reduction condition;
and when the noise value meets the noise reduction condition, adjusting the structural parameters of the counter-rotating fan to reduce the noise value generated by the air conditioner, wherein the adjusted structural parameters are in a preset interval, and the structural parameters comprise the blade angle of the wind wheel and the distance between the two wind wheels.
In one embodiment, the processor 1001 may be configured to call a control program of the air conditioner stored in the memory 1002 and perform the following operations:
determining a target noise value;
according to the target noise value and a first noise difference value of the noise value;
and adjusting the structural parameters of the counter-rotating fan according to the first noise difference value.
In one embodiment, the processor 1001 may be configured to call a control program of the air conditioner stored in the memory 1002 and perform the following operations:
reducing the blade angle of at least one wind wheel, wherein the blade angle is an included angle between a first plane and a second plane, the included angle is an acute angle, the first plane is a tangent plane of the blade, a rotating shaft of the blade is positioned on the first plane, the second plane is a plane vertical to the rotating shaft of the wind wheel, and the adjusted blade angle of the wind wheel is positioned in a blade angle interval corresponding to the wind wheel;
and increasing the relative distance between the two wind wheels, wherein the adjusted relative distance is positioned in a preset distance interval.
In one embodiment, the processor 1001 may be configured to call a control program of the air conditioner stored in the memory 1002 and perform the following operations:
and in a first blade angle interval, reducing the blade angle of the front wind wheel, wherein the blade angle interval corresponding to the front wind wheel is the first blade angle interval.
In one embodiment, the processor 1001 may be configured to call a control program of the air conditioner stored in the memory 1002 and perform the following operations:
acquiring a target noise value to periodically judge whether the noise value currently generated by the air conditioner is less than or equal to the target noise value;
and when the current noise value generated by the air conditioner is smaller than or equal to the target noise value, reducing the blade angle of the front wind wheel in the first blade angle interval, and increasing the blade angle of the rear wind wheel in the second blade angle interval, wherein the blade angle interval corresponding to the rear wind wheel is the second blade angle interval.
In one embodiment, the processor 1001 may be configured to call a control program of the air conditioner stored in the memory 1002 and perform the following operations:
when the current noise value generated by the air conditioner is larger than the target noise value, and the current blade angle of the front wind wheel is reduced to the minimum blade angle corresponding to the front wind wheel, the blade rotation degree of the front wind wheel is restored to the first blade angle, and the blade angle of the rear wind wheel is reduced in the second blade angle interval, wherein when the noise value meets the noise reduction condition, the blade angle of the front wind wheel is the first blade angle, and the minimum blade angle corresponding to the front wind wheel is the minimum blade angle in the blade angle interval corresponding to the front wind wheel.
In one embodiment, the processor 1001 may be configured to call a control program of the air conditioner stored in the memory 1002 and perform the following operations:
the noise value that the air conditioner produced at present is greater than target noise value, just the blade angle of rear wind wheel reduces extremely during the minimum blade angle that rear wind wheel corresponds, will the blade angle of rear wind wheel resumes to second blade angle, and reduce in the first blade angle interval the front wind wheel and, reduce in the second blade angle interval the blade angle of rear wind wheel, wherein, judging when the noise value satisfies the noise reduction condition, the blade angle of rear wind wheel does the second blade angle, the minimum blade angle that rear wind wheel corresponds does the minimum blade angle between the blade angle interval that rear wind wheel corresponds.
In one embodiment, the processor 1001 may be configured to call a control program of the air conditioner stored in the memory 1002 and perform the following operations:
and reducing the current blade angle of the front wind wheel to the minimum blade angle of the front wind wheel, and increasing the blade angle of the rear wind wheel according to the target noise value.
In one embodiment, the processor 1001 may be configured to call a control program of the air conditioner stored in the memory 1002 and perform the following operations:
judging whether the current time period is in a preset time period or not;
when the current time period is in a preset time period, taking a first preset threshold value as a target noise value;
and when the current time period is not in the preset time period, taking a second preset threshold value as a target noise value, wherein the first preset threshold value is smaller than the second preset threshold value.
In one embodiment, the processor 1001 may be configured to call a control program of the air conditioner stored in the memory 1002 and perform the following operations:
and reducing the rotating speed of at least one wind wheel, wherein the adjusted rotating speed of the wind wheel is in a preset rotating speed interval corresponding to the wind wheel.
In one embodiment, the processor 1001 may be configured to call a control program of the air conditioner stored in the memory 1002 and perform the following operations:
determining a target noise value to judge whether the noise value is larger than the target noise value, wherein when the noise value is larger than the target noise value, the noise value is judged to meet a noise reduction condition;
or acquiring an environment noise value of the space where the air conditioner is located, calculating a second noise difference value between the noise value and the environment noise value, and judging whether the second noise difference value is larger than a preset difference value, wherein when the second noise difference value is larger than the preset difference value, the noise value is judged to meet a noise reduction condition.
In one embodiment, the processor 1001 may be configured to call a control program of the air conditioner stored in the memory 1002 and perform the following operations:
acquiring a setting parameter of the air conditioner and an environmental parameter of a space where the air conditioner is located in real time or in a timing manner, wherein the type of the setting parameter is the same as that of the environmental parameter;
judging whether the environmental parameters are matched with the set parameters or not, wherein the set parameters comprise one or more of set humidity, set temperature and set air volume;
and when the environmental parameters are matched with the set parameters, adjusting the structural parameters of the counter-rotating fan according to a preset parameter adjusting value so as to reduce the noise value generated by the air conditioner, wherein the adjusted structural parameters are in a preset interval, and the structural parameters comprise the blade angle of the wind wheel and the distance between the two wind wheels.
According to the scheme, when the air conditioner adopts the counter-rotating fan to supply air, the noise value collected by the noise sensor and generated by the air conditioner is acquired in real time or at regular time, and when the noise value meets the noise reduction condition, the structural parameters of the counter-rotating fan are adjusted to reduce the noise value, so that the noise value generated by the air conditioner is reduced on the premise that the user requirement is met by the air conditioner, and the problem that the air conditioner disturbs people is solved.
Based on the hardware architecture, the embodiment of the control method of the air conditioner is provided.
Referring to fig. 2, fig. 2 is a first embodiment of a control method of an air conditioner according to the present invention, the control method of the air conditioner including the steps of:
step S10, acquiring the noise value collected by the noise sensor in real time or at regular time;
in the invention, the air conditioner can be a cabinet air conditioner and can be an on-hook air conditioner. Taking a cabinet as an example, referring to fig. 3 and 4, the air conditioner includes a housing 10 and a front panel 11 disposed in the housing, the housing 10 is provided with an air outlet 110, the front panel 11 is also provided with an air outlet (not labeled), and the two air outlets are disposed oppositely; the counter-rotating fan 12 is arranged in the air duct and is arranged between the air outlet 110 of the shell 10 and the air outlet of the front panel 11; in addition, the two air outlets may be provided with a cylindrical structure (not labeled), and the cylindrical structure may be provided with a counter-rotating fan 12 and a noise sensor (not labeled) for detecting the noise value generated by the air conditioner, in an embodiment, the noise sensor is disposed in the air duct close to the counter-rotating fan; the counter-rotating fan 11 comprises a front wind wheel 12a and a rear wind wheel 12b, and the distance between the front wind wheel 12a and the air outlet 110 of the casing 10 is greater than the distance between the rear wind wheel 12b and the air outlet 110.
When the counter-rotating fan operates, the two wind wheels are arranged oppositely, and the rotation directions of the two wind wheels are opposite, so that the counter-rotating fan generates a vortex effect, air generates vibration, and larger noise is generated. After the inventor tests the structural parameters of the cyclone machine, the inventor finds that the relative distance between the two wind wheels has influence on the noise value, and the test results show that: in a certain distance interval, the larger the distance between the two wind wheels is, the smaller the noise value generated by the air conditioner is.
In addition, the blade angle of the wind wheel also affects the generation of noise value of the wind turbine, referring to fig. 5, α is the blade angle of the wind wheel, the blade angle is an included angle between a first plane and a second plane, the included angle is an acute angle, the first plane is a tangent plane of the blade (the blade is a curved surface), the rotating shaft of the blade is located on the first plane, and the second plane is a plane perpendicular to the rotating shaft of the wind wheel. Tests show that in a certain blade angle interval, the smaller the blade angle is, the smaller the noise value generated by the counter-rotating fan is.
Based on the discovery and the test, the air conditioner can reduce the noise value generated by the air conditioner through the structural parameters of the counter-rotating fan. Therefore, when the air conditioner runs, the noise sensor is started, so that the noise value collected by the noise sensor is acquired in real time or at regular time.
Step S20, judging whether the noise value meets the noise reduction condition;
after the noise value is obtained, the air conditioner can judge whether the noise value meets the noise reduction condition. Specifically, the air conditioner determines whether the noise value is greater than a target noise value, and if the noise value is greater than the target noise value, it determines that the noise value satisfies the target noise value.
It should be noted that the target noise value is determined according to a preset threshold value stored in the air conditioner. Specifically, the air conditioner judges whether the current time period is in a preset time period, the preset time period can be set by a user, an environment corresponding to the preset time period is set to be a quiet environment, the preset time period can be a sleep time period, if the current time period is in the preset time period, a first preset threshold stored in the air conditioner is used as a target noise value, the first preset threshold can be any appropriate numerical value, and decibels corresponding to the first preset threshold are small; and if the current time period is not the preset time period, taking a second preset threshold value stored by the air conditioner as a target noise value, wherein the second preset threshold value is larger than the first preset threshold value. In addition, the target noise value can be determined by the state of the user, for this reason, a preset state is stored in the air conditioner, the preset state can be a sleep state, the air conditioner can determine the state of the user through a camera of the air conditioner, or the state of the user is determined through a sleep detector in communication connection with the air conditioner, if the state of the user is the preset state, a third preset threshold value is used as the target noise value, if the state of the user is not the preset state, a fourth preset threshold value is used as the target noise value, the fourth preset threshold value is larger than the third preset threshold value, and a decibel value corresponding to the third preset threshold value is small, so that the user can be in a quiet environment.
When a user is in a noisy environment, if the noise value generated by the air conditioner is smaller than the noise value corresponding to the noisy environment, the influence of the noise generated by the air conditioner on the user is small; it is understood that the noise level generated by the air conditioner may cause a large noise pollution to the user only if the noise level generated by the air conditioner is greater than the ambient noise. Therefore, the air conditioner can judge whether the noise value meets the noise reduction condition or not according to the environment noise value and the noise value collected by the noise sensor. Specifically, a noise sensor is arranged in the room and is in signal connection with the air conditioner, the air conditioner obtains an environment noise value through the noise sensor, so that a noise difference value (a first noise difference value) between the noise value generated by the air conditioner and the environment noise value is calculated, and if the noise difference value is larger than a preset difference value, the air conditioner judges that the noise value meets a noise reduction condition.
Step S30, when the noise value meets the noise reduction condition, adjusting the structural parameters of the counter-rotating fan to reduce the noise value generated by the air conditioner, wherein the adjusted structural parameters are in a preset interval, and the structural parameters comprise the blade angle of the wind wheel and the distance between the two wind wheels;
when the noise value meets the noise reduction condition, the air conditioner adjusts the structural parameters of the counter-rotating fan, specifically, the blade angle of at least one wind wheel is reduced, or the relative distance between the two wind wheels is increased, or the blade angle of at least one wind wheel is reduced and the relative distance between the two wind wheels is increased. It should be noted that the adjusted structural parameters are in the corresponding parameter intervals. In addition, when the structural parameters of the counter-rotating fan comprise the blade angle of the wind wheel, the noise value can be reduced by referring to the following steps;
there are four schemes to reduce the noise value of the air conditioner by the rotating speed of the wind wheel, which are respectively:
the scheme 1 is that the blade angle of the rear wind wheel is reduced, and the blade angle of the front wind wheel is unchanged;
scheme 2, the blade angle of the front wind wheel is reduced, and the blade angle of the rear wind wheel is unchanged;
scheme 3, simultaneously reducing the blade angle of the front wind wheel and the rear wind wheel;
and in the scheme 4, the rotating speed of the front wind wheel is reduced to the minimum blade angle, and the blade angle of the rear wind wheel is improved.
The air conditioner may optionally employ one of the solutions to reduce the amount of noise generated by the air conditioner.
The air conditioner can gradually adjust the structural parameters of the counter-rotating fan so as to gradually reduce the noise value of the air conditioner. Or, the air conditioner may reduce the noise value of the air conditioner to the target noise value in one step, specifically, the air conditioner determines the target noise value to obtain a noise difference (first noise difference) between the current noise value and the target noise value through calculation, and then determines the structural parameter adjustment value according to the noise difference, thereby determining the target structural parameter of the counter-rotating fan according to the structural parameter adjustment value, and thus reducing the noise value of the air conditioner.
In the technical scheme provided by the embodiment, when the air conditioner adopts the counter-rotating fan to supply air, the noise value generated by the air conditioner and collected by the noise sensor is acquired in real time or at regular time, and when the noise value meets the noise reduction condition, the structural parameters of the counter-rotating fan are adjusted to reduce the noise value, so that the noise value generated by the air conditioner is reduced on the premise that the user requirement is met by the air conditioner, and the problem that the air conditioner disturbs people is solved.
Referring to fig. 6, fig. 6 is a second embodiment of the control method of the air conditioner according to the present invention, and based on the above embodiment, the step S30 includes:
step S31, reducing the blade angle of the front wind wheel in a first blade angle interval, wherein the blade angle interval corresponding to the front wind wheel is the first blade angle;
the blade size of the rear wind wheel is larger than that of the front wind wheel, the size can be width and length, so that the attraction of the rear wind wheel to wind is larger than that of the front wind wheel, and in addition, the distance between the rear wind wheel and the air inlet is larger than that between the front wind wheel and the air inlet, so that the attraction of the rear wind wheel to wind is further larger than that of the front wind wheel. It can be understood that under the condition of reducing the same blade angle, the reduction value of the air output of the front wind wheel is smaller than that of the rear wind wheel, so that the air output loss corresponding to the rear wind wheel is higher than that of the front wind wheel. Therefore, the air conditioner reduces the blade angle of the front wind wheel in the first blade angle interval, and the first blade angle is the blade angle interval corresponding to the front wind wheel.
In the technical scheme provided by the embodiment, the air conditioner reduces the blade angle of the front wind wheel in the first blade angle interval of the front wind wheel, so that the loss of the air output of the air conditioner is reduced to the maximum extent, and the loss of the refrigerating capacity or the heating capacity of the air conditioner is reduced.
Referring to fig. 7, fig. 7 is a third embodiment of the control method of the air conditioner according to the present invention, and based on the second embodiment, after step S31, the method further includes:
step S40, obtaining a target noise value, and periodically judging whether the noise value currently generated by the air conditioner is smaller than or equal to the target noise value;
and step S50, when the current noise value generated by the air conditioner is smaller than or equal to the target noise value, reducing the blade angle of the front wind wheel in the first blade angle interval, and increasing the blade angle of the rear wind wheel in the second blade angle interval, wherein the blade angle interval corresponding to the rear wind wheel is the second blade angle interval.
Because the influence of the rear wind wheel on the air output is greater than that of the front wind wheel, after the blade angle of the front wind wheel is reduced, the air conditioner acquires a target noise value, periodically judges whether the noise value currently generated by the air conditioner is greater than the target noise value (the periodicity can be a time period, and the time length corresponding to the time period can be any suitable value), and if the current noise value is less than or equal to the target noise value and the blade of the front wind wheel is not reduced to the minimum blade angle of a preset blade angle adjusting interval (a first preset blade angle adjusting interval) corresponding to the front wind wheel, the air conditioner can continuously reduce the blade angle of the front wind wheel in the first preset blade angle adjusting interval and simultaneously increase the blade angle of the rear wind wheel, so that the air conditioner further reduces the loss of the air output; in one embodiment, the air conditioner reduces the blade angle of the front wind wheel to the minimum blade angle of the first preset blade angle adjusting interval, and increases the current blade angle of the rear wind wheel according to the target noise value.
The air conditioner reduces the air output of the front wind wheel and increases the air output of the rear wind wheel by continuously reducing the blade angle of the front wind wheel and simultaneously increasing the blade angle of the rear wind wheel, so that the increased air output is greater than the reduced air output, the loss of the air output is further reduced on the premise of ensuring the user demand, and the loss of the refrigerating capacity or the heating capacity of the air conditioner is further reduced.
In the technical scheme provided by this embodiment, after the blade angle of the front wind wheel is reduced, the air conditioner judges whether the current noise value is less than or equal to the target noise value, if so, the air conditioner continues to reduce the blade angle of the front wind wheel and increases the blade angle of the rear wind wheel, so that the air conditioner further reduces the loss of the air output on the premise of ensuring the user requirement, and further reduces the loss of the refrigerating capacity or the heating capacity of the air conditioner.
Referring to fig. 8, fig. 8 is a fourth embodiment of the method for controlling an air conditioner according to the present invention, and based on the third embodiment, after step S40, the method further includes:
step S60, when the current noise value generated by the air conditioner is larger than the target noise value and the current blade angle of the front wind wheel is reduced to the minimum blade angle corresponding to the front wind wheel, restoring the blade rotation degree of the front wind wheel to the first blade angle, and reducing the blade angle of the rear wind wheel in the second blade angle interval, wherein when the noise value is judged to meet the noise reduction condition, the blade angle of the front wind wheel is the first blade angle, and the minimum blade angle corresponding to the front wind wheel is the minimum blade angle of the blade angle interval corresponding to the front wind wheel;
when the air conditioner reduces the blade angle of the front wind wheel and periodically judges whether the noise value currently generated by the air conditioner is larger than a target noise value, if the noise value is larger than the target noise value and the blade angle of the front wind wheel is reduced to the minimum blade angle in the first blade angle interval, at the moment, the reduction of the blade angle of the front wind wheel cannot enable the noise value generated by the air conditioner to be reduced to the target noise value; the air conditioner needs to reduce the noise value by reducing the blade angle of the rear wind wheel (the attraction of the rear wind wheel to the air is larger, and the noise value generated by the rear wind wheel is larger than that generated by the front wind wheel under the same blade angle); at the moment, the air conditioner reads the current blade of the front wind wheel to restore to the first blade angle, and simultaneously reduces the current blade angle of the rear wind wheel, wherein the first blade angle is the blade angle of the front wind wheel when the noise value determined by the air conditioner meets the target noise value.
The air conditioner reduces the noise value to the target noise value by the switching mode on the premise that the air conditioner meets the user requirements.
In the technical scheme provided by this embodiment, when the blade angle of the front wind wheel is reduced and is not enough to reduce the noise value of the air conditioner to the target noise value, the blade angle of the rear wind wheel is reduced, and the blade angle of the front wind wheel is recovered, so that the noise value generated by the air conditioner is reduced to the target noise value on the premise that the air conditioner meets the user requirement.
Referring to fig. 9, fig. 9 shows a fifth embodiment of the method for controlling an air conditioner according to the present invention, and based on the fourth embodiment, after step S60, the method further includes:
step S70, when the noise value currently generated by the air conditioner is larger than the target noise value and the blade angle of the rear wind wheel is reduced to the minimum blade angle corresponding to the rear wind wheel, restoring the blade angle of the rear wind wheel to a second blade angle, reducing the front wind wheel in the first blade angle interval and reducing the blade angle of the rear wind wheel in the second blade angle interval, wherein when the noise value is judged to meet the noise reduction condition, the blade angle of the rear wind wheel is the second blade angle, and the minimum blade angle corresponding to the rear wind wheel is the minimum blade angle of the blade angle interval corresponding to the rear wind wheel;
further, after the blade angle of the rear wind wheel is reduced, if the noise value is greater than the target noise value and the blade angle of the rear wind wheel is reduced to the minimum blade angle within the second preset blade angle interval, the minimum blade angle is also the minimum blade angle corresponding to the rear wind wheel, the reduction of the blade angle of the rear wind wheel is not enough to reduce the noise value generated by the air conditioner to the target noise value, and in addition, the reduction of the blade angle of the front wind wheel is not enough to reduce the noise value generated by the air conditioner to the target noise value, the air conditioner needs to reduce the blade angles of the front wind wheel and the rear wind wheel simultaneously to reduce the noise value generated by the air conditioner to the target noise value. At the moment, the air conditioner can restore the blade angle of the rear wind wheel to a second blade angle, and simultaneously reduce the blade angles of the front wind wheel and the rear wind wheel, wherein the second blade angle is the blade angle corresponding to the rear wind wheel when the noise value of the air conditioner meets the noise reduction condition.
The air conditioner ensures that the air conditioner can reduce the noise value to the target noise value by reducing the blade angles of the front wind wheel and the rear wind wheel, and meanwhile, the air conditioner meets the requirements of users.
According to the steps, the air conditioner preferably selects scheme 2 to control the noise value; further, if the scheme 2 can reduce the noise value to the target noise value, a scheme 4 is adopted; if the scheme 2 cannot reduce the noise value to the target noise value, the scheme 1 is adopted, and if the scheme 1 cannot reduce the noise value to the target noise value, the scheme 3 is adopted.
The air conditioner selects scheme 2 preferably to control the noise value; further, if the scheme 2 can reduce the noise value to the target noise value, a scheme 4 is adopted; if the scheme 2 cannot reduce the noise value to the target noise value, the scheme 1 is adopted, and if the scheme 1 cannot reduce the noise value to the target noise value, the scheme 3 is adopted.
In this embodiment, when the noise value generated by the air conditioner is not sufficiently reduced to the target noise value by reducing the blade angle of the rear wind wheel, the blade angle of the rear wind wheel is recovered, and the blade angles of the front wind wheel and the rear wind wheel are reduced at the same time, so that the noise value generated by the air conditioner is reduced to the target noise value on the premise that the air conditioner meets the user requirement.
Referring to fig. 10, fig. 10 shows a sixth embodiment of the method for controlling an air conditioner according to the present invention, which is based on the first to fifth embodiments, and further includes, after step S30:
step S80, reducing the rotating speed of at least one wind wheel, wherein the adjusted rotating speed of the wind wheel is in a preset rotating speed interval corresponding to the wind wheel;
the blade size of the rear wind wheel is larger than that of the front wind wheel, the size can be width and length, so that the attraction of the rear wind wheel to wind is larger than that of the front wind wheel, and in addition, the distance between the rear wind wheel and the air inlet is larger than that between the front wind wheel and the air inlet, so that the attraction of the rear wind wheel to wind is further larger than that of the front wind wheel. It can be understood that under the condition of reducing the same rotating speed, the air output reduction value of the front wind wheel is smaller than that of the rear wind wheel. Based on the above, in the invention, the rotating speed of the front wind wheel is preferably reduced, and the rotating speed of the rear wind wheel is kept unchanged, so that the air output loss of the air conditioner is reduced to the maximum extent, and the loss of the heating capacity or the cooling capacity of the air conditioner is reduced.
Because the influence of the rear wind wheel on the air output is greater than that of the front wind wheel on the air output, after the rotating speed of the front wind wheel is reduced, the air conditioner acquires a target noise value, periodically judges whether the noise value currently generated by the air conditioner is greater than the target noise value (the periodicity can be a time period, and the time length corresponding to the time period can be any suitable numerical value), if the current noise value is less than or equal to the target noise value, and the rotating speed of the front wind wheel is not reduced to the minimum rotating speed of a preset rotating speed interval (a first preset rotating speed interval) corresponding to the front wind wheel, the air conditioner can continuously reduce the rotating speed of the front wind wheel in the first preset rotating speed interval, and simultaneously increase the rotating speed of the rear wind wheel, so that the air conditioner further reduces the loss of the air output; in one embodiment, the air conditioner reduces the rotation speed of the front wind wheel to the minimum rotation speed in a first preset rotation speed interval, the minimum rotation speed is also the minimum rotation speed corresponding to the front wind wheel, and the rotation speed of the rear wind wheel is increased according to the target noise value.
When the air conditioner reduces the rotating speed of the front wind wheel and periodically judges whether the noise value currently generated by the air conditioner is larger than a target noise value, if the noise value is larger than the target noise value and the rotating speed of the front wind wheel is reduced to the minimum rotating speed within a first preset rotating speed interval, at the moment, the fact that the noise value generated by the air conditioner cannot be reduced to the target noise value by reducing the rotating speed of the front wind wheel is shown; the air conditioner needs to reduce the noise value by reducing the rotating speed of the rear wind wheel (the attraction of the rear wind wheel to the air is larger, and the noise value generated by the rear wind wheel is larger than that generated by the front wind wheel under the same rotating speed); at the moment, the air conditioner restores the current rotation degree of the front wind wheel to a first rotation speed, and simultaneously reduces the current rotation speed of the rear wind wheel, wherein the first rotation speed is the rotation speed of the front wind wheel when the noise value determined by the air conditioner meets the target noise value.
Further, after the rotation speed of the rear wind wheel is reduced, if the noise value is greater than the target noise value and the rotation speed of the rear wind wheel is reduced to the minimum rotation speed within the second preset rotation speed interval, the minimum rotation speed is also the minimum rotation speed corresponding to the rear wind wheel, the reduction of the rotation speed of the rear wind wheel is not enough to reduce the noise value generated by the air conditioner to the target noise value, and in addition, the reduction of the rotation speed of the front wind wheel is not enough to reduce the noise value generated by the air conditioner to the target noise value, the air conditioner needs to reduce the rotation speeds of the front wind wheel and the rear wind wheel simultaneously to reduce the noise value generated by the air conditioner to the target noise value. At the moment, the air conditioner can restore the rotating speed of the rear wind wheel to a second rotating speed, and simultaneously reduce the rotating speeds of the front wind wheel and the rear wind wheel, wherein the second rotating speed is the rotating speed corresponding to the rear wind wheel when the noise value of the air conditioner meets the noise reduction condition.
It can be understood that there are four schemes for reducing the noise value of the air conditioner, which are respectively:
the scheme 1 is that the rotating speed of the rear wind wheel is reduced, and the rotating speed of the front wind wheel is unchanged;
scheme 2, the rotating speed of the front wind wheel is reduced, and the rotating speed of the rear wind wheel is unchanged;
scheme 3, the rotating speeds of the front wind wheel and the rear wind wheel are reduced simultaneously;
and 4, reducing the rotating speed of the front wind wheel to the lowest rotating speed, and increasing the rotating speed of the rear wind wheel.
The air conditioner selects scheme 2 preferably to control the noise value; further, if the scheme 2 can reduce the noise value to the target noise value, a scheme 4 is adopted; if the scheme 2 cannot reduce the noise value to the target noise value, the scheme 1 is adopted, and if the scheme 1 cannot reduce the noise value to the target noise value, the scheme 3 is adopted.
In this embodiment, after the air conditioner adjusts the structural parameters of the counter-rotating fan, the rotating speed of at least one wind wheel in the counter-rotating fan is further reduced, so that the air conditioner is ensured to reduce the noise value to the target noise value.
The invention also provides an air conditioner.
The air conditioner can be a cabinet air conditioner and can be an on-hook air conditioner. Taking a cabinet as an example, referring to fig. 3 and 4, the air conditioner includes a housing 10 and a front panel 11 disposed in the housing, the housing 10 is provided with an air outlet 110, the front panel 11 is also provided with an air outlet (not labeled), and the two air outlets are disposed oppositely; the counter-rotating fan 12 is arranged in the air duct and is arranged between the air outlet 110 of the shell 10 and the air outlet of the front panel 11; in addition, the two air outlets may be provided with a cylindrical structure (not labeled), and the cylindrical structure may be provided with a counter-rotating fan 12 and a noise sensor (not labeled) for detecting the noise value generated by the air conditioner, in an embodiment, the noise sensor is disposed in the air duct close to the counter-rotating fan; the counter-rotating fan 11 comprises a front wind wheel 12a and a rear wind wheel 12b, and the distance between the front wind wheel 12a and the air outlet 110 of the casing 10 is greater than the distance between the rear wind wheel and the air outlet 110.
The front wind wheel 12a is connected with the front motor 13a, the rear motor 12b is connected with the rear motor 13b, and the air conditioner can respectively adjust the rotating speeds of the front wind wheel 12a and the front wind wheel 12b through the front motor 13a and the rear motor 13 b.
Referring to fig. 11, the counter-rotating fan 12 is mounted in the air duct through a casing 14, specifically, the casing 14 (i.e., the casing 14) includes a front casing and a rear casing, the front casing and the rear casing include a cover body and an inner support, for example, the rear casing includes a cover body 14a and an inner support 14b, the inner support 14 may be provided in a plurality of numbers, a fixing portion is provided at an intersection of each inner support 14, the fixing portion is provided with a through hole, a transmission rod of the front motor 13a penetrates through the through hole to be connected with the front wind wheel 12a, and the rear motor 13a and the fixing portion are fixed through bolts; the front housing is provided with a mounting plate 14c, the mounting plate 14c is connected with the housing of the front housing, so that the counter-rotating fan 12 is fixed on the front panel 11 through the mounting plate 14c, in addition, the rear housing is provided with an insertion part 141, the front housing is provided with a plug-in buckle 142, the rear wind wheel and the front wind wheel are fixed on the front panel 11 together through the insertion part 141 and the plug-in buckle 142, and of course, a plurality of insertion parts 141 and plug-in buckles 142 are required to fix the rear wind wheel 12 b.
Further, the air conditioner is provided with a sliding device. Referring to fig. 12, for example, the rear wind wheel, the sliding device includes a screw rod (not labeled), a nut 151 matched with the screw rod, and a plurality of sliding rods (not labeled), the mounting plate 14c is provided with a plurality of through holes 152, the sliding rods pass through the through holes 152, that is, the number of the sliding rods is the same as that of the through holes 152, and the sliding rods are arranged in parallel and fixed in the air duct; so that the wind wheel moves along the slide bar; the screw rod is established to nut 151 cover, and the one end and the motor of screw rod are connected, and the air conditioner passes through the starter motor to rotate the screw rod, thereby through with screw rod complex nut, the drive is installed and is moved on the slide rail at the installing support upper wind wheel, thereby realizes the adjustment of the relative distance of two wind wheels.
Further, referring to fig. 13 and 14, the blade angle of the air conditioner is adjustable, the blade angle refers to an included angle between a first plane and a second plane, the included angle is an acute angle, the first plane is a tangent plane of the blade, a rotating shaft of the blade is located on the first plane, the second plane is a plane perpendicular to a rotating axis of the wind wheel, and the blade angle of the adjusted wind wheel is located in a blade angle interval corresponding to the wind wheel. The wind wheel comprises a hub 16, a driving part 17, a connecting rod 19 and a plurality of blades 18, the driving part 17 is arranged in the hub 16, one end of the connecting rod is connected with the driving part, and the other end of the connecting rod penetrates through the cylindrical wall of the hub 16 and is connected with the blades 18; the driving member 17 includes a driving pulley 171, a driving pulley 172, and a driven pulley 173, the driving pulley 171 is engaged with the driving pulley 172, and the driving pulley 172 is engaged with the driven pulley 173.
The hub 16 comprises a frame part 161 and a plurality of supporting frames 162 connected with the inner wall of the frame part 161, fixing platforms 163 are arranged on the adjacent supporting frames 162 in a supporting way, and a driving wheel 171 is arranged on the fixing platforms 163 and meshed with a driving wheel 173; the transmission wheel 173 includes a gear 173a and a connection part 173b, and one side of the connection part 173b is movably connected to the inner wall of the frame part 161 and the other side is movably connected to the gear 173 a.
Two vertical gears 173a are arranged on the transmission wheel 172, one gear 173a is meshed with the driving wheel 171, and the other gear 173a is meshed with the driven wheel 173, so that the rotation axis of the driving wheel 171 is vertical to that of the driven wheel. The two gears of the driving wheel 172 are not limited to be perpendicular, and may be acute angles or obtuse angles; of course, the driven wheel 173 and the driving wheel 171 can share one gear, that is, the driving wheel 172 is provided with only one gear.
Referring to fig. 14, the driven wheel 173 is connected to the vane 18 through a connecting rod 19, and one end of the connecting rod 181 is connected to the vane 18 and the other end thereof penetrates the fixing member 16 and is connected to the driven wheel 173.
The air conditioner further comprises a processor, a memory and a control program of the air conditioner stored on the memory and capable of running on the processor, wherein the control program of the air conditioner realizes the steps of the control method of the air conditioner when being executed by the processor.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (20)

1. The control method of the air conditioner is characterized in that a counter-rotating fan is arranged in an air duct of the air conditioner, the counter-rotating fan comprises two oppositely arranged wind wheels, and the air conditioner further comprises a noise sensor for detecting the noise value generated by the air conditioner; the control method of the air conditioner comprises the following steps:
acquiring a noise value acquired by the noise sensor in real time or in a timing manner;
judging whether the noise value meets a noise reduction condition;
and when the noise value meets the noise reduction condition, adjusting the structural parameters of the counter-rotating fan to reduce the noise value generated by the air conditioner, wherein the adjusted structural parameters are in a preset interval, and the structural parameters comprise the blade angle of the wind wheel and the distance between the two wind wheels.
2. The control method of an air conditioner according to claim 1, wherein the step of adjusting the structural parameter of the counter-rotating fan comprises:
determining a target noise value;
according to the target noise value and the first noise difference value of the noise value;
and adjusting the structural parameters of the counter-rotating fan according to the first noise difference value.
3. The control method of an air conditioner according to claim 1, wherein the step of adjusting the structural parameters of the counter-rotating fan comprises at least:
reducing the blade angle of at least one wind wheel, wherein the blade angle is an included angle between a first plane and a second plane, the included angle is an acute angle, the first plane is a tangent plane of the blade, a rotating shaft of the blade is positioned on the first plane, the second plane is a plane vertical to the rotating shaft of the wind wheel, and the adjusted blade angle of the wind wheel is positioned in a blade angle interval corresponding to the wind wheel;
and increasing the relative distance between the two wind wheels, wherein the adjusted relative distance is positioned in a preset distance interval.
4. A control method of an air conditioner according to claim 3, wherein the counter-rotating fan includes a front wind wheel and a rear wind wheel, a distance between the front wind wheel and the outlet is greater than a distance between the rear wind wheel and the outlet, and the step of reducing the blade angle of at least one of the wind wheels includes:
and in a first blade angle interval, reducing the blade angle of the front wind wheel, wherein the blade angle interval corresponding to the front wind wheel is the first blade angle interval.
5. The control method of an air conditioner according to claim 4, wherein said step of reducing the blade angle of said front wind wheel is followed by further comprising:
acquiring a target noise value to periodically judge whether the noise value currently generated by the air conditioner is less than or equal to the target noise value;
and when the current noise value generated by the air conditioner is smaller than or equal to the target noise value, reducing the blade angle of the front wind wheel in the first blade angle interval, and increasing the blade angle of the rear wind wheel in the second blade angle interval, wherein the blade angle interval corresponding to the rear wind wheel is the second blade angle interval.
6. The method of controlling an air conditioner according to claim 5, wherein after the step of periodically determining whether the noise level currently generated by the air conditioner is less than or equal to the target noise level, the method further comprises:
when the current noise value generated by the air conditioner is larger than the target noise value, and the current blade angle of the front wind wheel is reduced to the minimum blade angle corresponding to the front wind wheel, the blade rotation degree of the front wind wheel is restored to the first blade angle, and the blade angle of the rear wind wheel is reduced in the second blade angle interval, wherein when the noise value meets the noise reduction condition, the blade angle of the front wind wheel is the first blade angle, and the minimum blade angle corresponding to the front wind wheel is the minimum blade angle in the blade angle interval corresponding to the front wind wheel.
7. The control method of an air conditioner according to claim 6, wherein said step of reducing the blade angle of said rear wind wheel is followed by further comprising:
the noise value that the air conditioner produced at present is greater than target noise value, just the blade angle of rear wind wheel reduces extremely during the minimum blade angle that rear wind wheel corresponds, will the blade angle of rear wind wheel resumes to second blade angle, and reduce in the first blade angle interval the front wind wheel and, reduce in the second blade angle interval the blade angle of rear wind wheel, wherein, judging when the noise value satisfies the noise reduction condition, the blade angle of rear wind wheel does the second blade angle, the minimum blade angle that rear wind wheel corresponds does the minimum blade angle between the blade angle interval that rear wind wheel corresponds.
8. The control method of an air conditioner according to claim 5, wherein the step of decreasing the blade angle of the front wind wheel and increasing the blade angle of the rear wind wheel comprises:
and reducing the current blade angle of the front wind wheel to the minimum blade angle of the front wind wheel, and increasing the blade angle of the rear wind wheel according to the target noise value.
9. The control method of an air conditioner according to claim 2, wherein the step of determining the target noise value comprises:
judging whether the current time period is in a preset time period or not;
when the current time period is in a preset time period, taking a first preset threshold value as a target noise value;
and when the current time period is not in the preset time period, taking a second preset threshold value as a target noise value, wherein the first preset threshold value is smaller than the second preset threshold value.
10. A control method of an air conditioner according to any one of claims 1 to 9, wherein said counter-rotating fan includes two oppositely disposed wind wheels, and after said step of adjusting the structural parameters of said counter-rotating fan, further comprising:
and reducing the rotating speed of at least one wind wheel, wherein the adjusted rotating speed of the wind wheel is in a preset rotating speed interval corresponding to the wind wheel.
11. The control method of an air conditioner according to any one of claims 1 to 9, wherein the step of judging whether the noise value satisfies a noise reduction condition includes:
determining a target noise value to judge whether the noise value is larger than the target noise value, wherein when the noise value is larger than the target noise value, the noise value is judged to meet a noise reduction condition;
or acquiring an environment noise value of the space where the air conditioner is located, calculating a second noise difference value between the noise value and the environment noise value, and judging whether the second noise difference value is larger than a preset difference value, wherein when the second noise difference value is larger than the preset difference value, the noise value is judged to meet a noise reduction condition.
12. The control method of an air conditioner according to any one of claims 1 to 9, further comprising, after the step of adjusting the structural parameters of the counter-rotating fan:
acquiring a setting parameter of the air conditioner and an environmental parameter of a space where the air conditioner is located in real time or in a timing manner, wherein the type of the setting parameter is the same as that of the environmental parameter;
judging whether the environmental parameters are matched with the set parameters or not, wherein the set parameters comprise one or more of set humidity, set temperature and set air volume;
and when the environmental parameters are matched with the set parameters, adjusting the structural parameters of the counter-rotating fan according to a preset parameter adjusting value so as to reduce the noise value generated by the air conditioner, wherein the adjusted structural parameters are in a preset interval, and the structural parameters comprise the blade angle of the wind wheel and the distance between the two wind wheels.
13. An air conditioner is characterized in that a counter-rotating fan is arranged in an air duct of the air conditioner, the counter-rotating fan comprises two oppositely arranged wind wheels, and the air conditioner is further provided with a noise sensor for detecting a noise value generated by the air conditioner; the air conditioner further includes a processor, a memory, and a control program of the air conditioner stored on the memory and executable on the processor, the control program of the air conditioner implementing the steps of the control method of the air conditioner according to any one of claims 1 to 12 when executed by the processor.
14. The air conditioner according to claim 13, wherein the noise sensor is disposed adjacent to the counter-rotating fan.
15. The air conditioner according to claim 13, wherein the two wind wheels are respectively provided on corresponding mounting brackets, a sliding device is provided between the two mounting brackets, and the air conditioner adjusts the relative distance between the two wind wheels by driving the sliding device.
16. The air conditioner according to claim 15, wherein the sliding means comprises a screw, a nut matched with the screw, and a plurality of sliding bars; the slide bar is arranged in the air duct, a plurality of through holes are formed in the mounting bracket, the slide bar penetrates through the through holes, the nut is arranged on the mounting bracket, the screw rod is sleeved on the nut, and one end of the screw rod is connected with the motor.
17. The air conditioner according to claim 13, wherein the wind wheel includes a hub, a driving member, a plurality of connecting rods, and a plurality of blades, the driving member is disposed inside the hub, one end of the connecting rod is connected to the driving member, and the other end thereof passes through the cylindrical wall of the hub and is connected to the blades disposed outside the cylindrical wall of the hub.
18. The air conditioner as claimed in claim 17, wherein the driving member includes a driving wheel coupled to a rotation shaft of the motor, a driving wheel engaged with the driving wheel and the driven wheel, respectively, and a driven wheel coupled to the vane by the coupling rod, which is a rotation shaft of the vane.
19. The air conditioner as claimed in claim 18, wherein the rotation axis of the driving pulley is perpendicular to the rotation axis of the driven pulley.
20. A storage medium storing a control program of an air conditioner, the control program of the air conditioner realizing the control method of the air conditioner according to any one of claims 1 to 12 when executed by a processor.
CN201811118840.2A 2018-09-21 2018-09-21 Air conditioner, control method thereof and storage medium Active CN109237714B (en)

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