CN111503816B - Defrosting sound suppression method, storage medium, suppression device and air conditioner - Google Patents
Defrosting sound suppression method, storage medium, suppression device and air conditioner Download PDFInfo
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- CN111503816B CN111503816B CN202010357456.9A CN202010357456A CN111503816B CN 111503816 B CN111503816 B CN 111503816B CN 202010357456 A CN202010357456 A CN 202010357456A CN 111503816 B CN111503816 B CN 111503816B
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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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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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
- F24F11/62—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
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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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- 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
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
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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
- 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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- 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
- F24F2013/247—Active noise-suppression
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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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- Air Conditioning Control Device (AREA)
Abstract
The application discloses a method for suppressing defrosting sound, a storage medium, a suppression device and an air conditioner, wherein the suppression method comprises the following steps: when the air conditioner enters a defrosting mode, judging whether an auxiliary heating system of the air conditioner is started or not; if so, controlling the opening degree of a bypass electronic valve and the rotating speed of an indoor fan in a refrigerant loop of the air conditioner by adopting a sectional type control strategy within a first preset time so as to enable the opening degree of the bypass electronic valve to be related to the rotating speed of the indoor fan and increase in sections; if not, the opening degree of the bypass electronic valve is controlled to be gradually increased to the maximum opening degree, and the rotating speed of the indoor fan is controlled to be less than or equal to the preset rotating speed. From this, when the air conditioner got into the mode of defrosting, make the aperture of bypass electronic valve crescent, can reduce aerodynamic nature noise effectively to when the auxiliary heating system opened, the rotational speed of control indoor fan correlated with bypass electronic valve aperture, had restrained the air conditioner effectively and has changed the frost sound, improved user experience.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a defrosting sound suppression method, a storage medium, a suppression device and an air conditioner.
Background
In the defrosting mode, the air conditioner of the related art generally performs defrosting in the following two ways: the other is heat storage (electric heating) defrosting, and when the defrosting condition is reached, the heating state of the whole machine is not stopped, and the outdoor heat exchanger is defrosted by using the heat of the heat storage device.
However, whether the defrosting is a heat accumulation (electric heating) defrosting or a reverse heating defrosting, when the air conditioner is switched to the defrosting mode, the noise during defrosting is obviously increased due to the overhigh system pressure.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, an object of the present invention is to provide a method for suppressing a defrosting sound of an air conditioner, which can effectively reduce noise in a defrosting process of the air conditioner and improve user experience.
The invention also provides a computer readable storage medium which stores a suppression program for realizing the suppression method.
The invention further provides a suppression device adopting the suppression method.
The invention also provides an air conditioner which is provided with the restraining device.
According to the method for suppressing the defrosting sound of the air conditioner in the embodiment of the first aspect of the invention, the method comprises the following steps: when the air conditioner enters a defrosting mode, judging whether an auxiliary heating system of the air conditioner is started or not; if so, controlling the opening degree of a bypass electronic valve and the rotating speed of an indoor fan in a refrigerant loop of the air conditioner by adopting a sectional type control strategy within a first preset time so as to enable the opening degree of the bypass electronic valve to be related to the rotating speed of the indoor fan and increase in sections; if not, controlling the opening degree of the bypass electronic valve to gradually increase to the maximum opening degree, and controlling the rotating speed of the indoor fan to be less than or equal to the preset rotating speed.
According to the method for inhibiting the defrosting sound of the air conditioner, when the air conditioner enters a defrosting mode, the opening of the bypass electronic valve is gradually increased, obvious airflow impact and valve body impact generated during defrosting are buffered, aerodynamic noise can be effectively reduced, when the auxiliary heating system is started, the rotating speed of the indoor fan is controlled to be associated with the opening of the bypass electronic valve, the rotating speed and the opening of the bypass electronic valve are positively correlated, so that the aerodynamic noise is covered by white noise, the defrosting sound of the air conditioner is effectively inhibited, and user experience is improved.
According to some embodiments of the present invention, a sectional control strategy for controlling the opening of a bypass electronic valve and the rotation speed of an indoor fan in a refrigerant circuit of an air conditioner comprises: and firstly controlling the opening degree of the bypass electronic valve to be adjusted to a preset opening degree, controlling the rotating speed of the indoor fan to be increased to a preset rotating speed, and controlling the opening degree of the bypass electronic valve to be adjusted to the maximum opening degree and controlling the rotating speed of the indoor fan to be increased to the set maximum rotating speed after the second preset time is continued.
Further, controlling the opening degree of the bypass electronic valve to gradually increase to a maximum opening degree includes: and controlling the opening degree of the bypass electronic valve to exponentially increase from zero to the maximum opening degree along with time.
In some embodiments, the preset rotation speed is 50% of the maximum rotation speed, and the preset opening degree is 50% of the maximum opening degree.
According to a second aspect of the present invention, there is provided a computer readable storage medium having stored thereon a program for suppressing a defrosting sound of an air conditioner, the program, when executed by a processor, implementing the method for suppressing a defrosting sound of an air conditioner.
A defrosting sound suppression device of an air conditioner according to an embodiment of a third aspect of the present invention includes: the judging module is used for judging whether an auxiliary heating system of the air conditioner is started or not when the air conditioner enters a defrosting mode; the suppression control module is used for controlling the opening of a bypass electronic valve and the rotating speed of an indoor fan in a refrigerant loop of the air conditioner by adopting a sectional type control strategy within a first preset time when the judging module judges that the auxiliary heating system is started, so that the opening of the bypass electronic valve is related to the rotating speed of the indoor fan and is increased in sections; the suppression control module is further used for controlling the opening degree of the bypass electronic valve to gradually increase to the maximum opening degree when the judging module judges that the auxiliary heating system is not started, and controlling the rotating speed of the indoor fan to be less than or equal to a preset rotating speed.
Furthermore, the suppression control module is further used for firstly controlling the opening degree of the bypass electronic valve to be adjusted to a preset opening degree, controlling the rotating speed of the indoor fan to be increased to a preset rotating speed, controlling the opening degree of the bypass electronic valve to be adjusted to a maximum opening degree after the second preset time, and controlling the rotating speed of the indoor fan to be increased to a set maximum rotating speed.
Further, the restraint control module is further configured to control the opening of the bypass electronic valve to exponentially increase from zero to a maximum opening over time.
In some embodiments, the preset rotation speed is 50% of the maximum rotation speed, and the preset opening degree is 50% of the maximum opening degree.
The air conditioner according to the fourth aspect of the present invention includes an indoor heat exchanger, an outdoor heat exchanger, a compressor, and a throttle valve, and further includes a memory, a processor, and a program for suppressing a defrosting sound of the air conditioner, which is stored in the memory and is executable on the processor, and when the processor executes the program for suppressing the defrosting sound of the air conditioner, the method for suppressing the defrosting sound of the air conditioner is implemented.
Further, when the auxiliary heating system is a heat storage heating system, the gas outlet of the compressor is connected with the first port of the four-way valve, the return gas port of the compressor is connected to the second port of the four-way valve through an electromagnetic valve, the heat storage heating system is connected to two ends of the electromagnetic valve in parallel, the third port of the four-way valve is connected with the first port of the indoor heat exchanger, the second port of the indoor heat exchanger is connected with the first end of the throttle valve, the second end of the throttle valve is connected with the first port of the outdoor heat exchanger, the bypass electronic valve is connected with the throttle valve in parallel, and the second port of the outdoor heat exchanger is connected with the fourth port of the four-way valve.
Further, when the auxiliary heating system is an electric auxiliary heating system, the gas outlet of the compressor is connected with the first port of the four-way valve, the return gas port of the compressor is connected with the second port of the four-way valve, the third port of the four-way valve is connected with the first port of the indoor heat exchanger, the second port of the indoor heat exchanger is connected with the first end of the throttle valve, the second end of the throttle valve is connected with the first port of the outdoor heat exchanger, the second port of the outdoor heat exchanger is connected with the fourth port of the four-way valve, the electric auxiliary heating system is arranged corresponding to the outdoor heat exchanger, and the bypass electronic valve is connected between the gas outlet of the compressor and the first port of the outdoor heat exchanger.
In some embodiments, the bypass electronic valve is housed within the damped vibration damper.
Furthermore, a spring valve plate is arranged at the position of a valve front shunting tee joint of the bypass electronic valve to buffer, and the spring valve plate is arranged in the damping vibration damper.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a flow chart of a suppression method according to an embodiment of the invention;
FIG. 2 is a flow diagram of a segmented control strategy for a throttling method according to an embodiment of the present invention;
FIG. 3 is a schematic view of an air conditioner according to an embodiment of the present invention;
fig. 4 is another schematic view of an air conditioner according to an embodiment of the present invention.
FIG. 5 is a block diagram of a suppression device according to an embodiment of the present invention;
fig. 6 is a block diagram of an air conditioner according to an embodiment of the present invention;
FIG. 7 is a bypass electronic valve of an air conditioner according to an embodiment of the present invention;
FIG. 8 is a waterfall diagram of the defrosting sound at the indoor side of the air conditioner according to the embodiment of the present invention;
fig. 9 is a waterfall diagram of indoor defrosting sound of the conventional air conditioner;
FIG. 10 is a graph (within 60s) comparing sound pressure levels of an air conditioner according to an embodiment of the present invention with those of a conventional air conditioner;
fig. 11 is another sound pressure level comparison graph (60s-110s) of the air conditioner according to the embodiment of the present invention and the conventional air lifter.
Reference numerals:
an air-conditioner (1000) is provided,
the suppression device 100, the auxiliary heating system 200, the indoor heat exchanger 300, the compressor 400, the bypass electronic valve 500, the four-way valve 600, the solenoid valve 700, the throttle valve 800, the outdoor heat exchanger 900,
the decision block 110, the suppression control block 120,
the valve comprises a valve front shunt tee 510, a spring valve plate 520 and a damping vibration damper 530.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
A method of suppressing the defrosting sound of the air conditioner 1000 according to an embodiment of the present invention will be described with reference to fig. 1 to 7.
As shown in fig. 1, the method for suppressing the defrosting sound of the air conditioner 1000 according to the embodiment of the first aspect of the present invention includes the steps of:
when the air conditioner 1000 enters the defrosting mode, it is determined whether the auxiliary heating system 200 of the air conditioner 1000 is turned on.
Specifically, after the air conditioner is turned on, a user may send a defrosting instruction to the air conditioner 1000 through a remote controller of the air conditioner 1000, an app of the mobile terminal, a client of the PC, and the like, or the air conditioner 1000 receives a heating demand, but when the outdoor temperature is low and it is detected that the outdoor heat exchanger 900 is frosted, the air conditioner 1000 enters a defrosting mode, and automatically determines whether the auxiliary heating system 200 is turned on.
For example, the air conditioner 1000 may be provided with a sensor on the outdoor heat exchanger 900 to sense whether the outdoor heat exchanger 900 is frosted, and a temperature sensor or other components are provided in the vicinity of the auxiliary heating system 200 to sense whether the auxiliary heating system 200 is turned on or not through the temperature sensor or other sensing elements and the obtaining unit when the air conditioner 1000 is switched to the defrosting mode.
If yes, the opening degree of the bypass electronic valve 500 and the rotating speed of the indoor fan in the refrigerant loop of the air conditioner 1000 are controlled by adopting a sectional control strategy within a first preset time, so that the opening degree of the bypass electronic valve 500 is related to the rotating speed of the indoor fan and is increased in sections.
The first preset time may be 5min, and when the air conditioner 1000 enters the defrosting mode and the auxiliary heating system 200 is turned on, the opening degree of the bypass electronic valve 500 is controlled to gradually increase in a sectional manner within the first preset time, and the rotating speed of the indoor fan is controlled to gradually increase in a sectional manner.
On one hand, the opening degree of the bypass electronic valve 500 is gradually increased, so that the bypass electronic valve 500 can be opened more smoothly and naturally, and the high-temperature and high-pressure refrigerant in the refrigerant loop is prevented from being changed and turned too violently, so that aerodynamic noise in the defrosting process of the refrigerant flowing towards the outdoor heat exchanger 900 is reduced; on the other hand, the rotation speed of the indoor fan is increased in synchronization with the opening degree of the bypass electronic valve 500, and the white noise of the indoor fan can mask the defrosting sound to suppress the defrosting sound.
In addition, after the air conditioner 1000 is switched to the defrosting mode, the heat of the heat exchange airflow provided by the indoor heat exchanger 300 can be reduced, so that the rotating speed of the indoor fan is gradually increased, and the heat exchange efficiency of the indoor side in the defrosting process can be reduced, so that the indoor temperature is prevented from being greatly fluctuated.
If not, the opening degree of the bypass electronic valve 500 is controlled to be gradually increased to the maximum opening degree, and the rotating speed of the indoor fan is controlled to be less than or equal to the preset rotating speed.
If the air conditioner 1000 is switched to the defrosting mode and the auxiliary heating system 200 is not turned on, the rotation speed of the indoor fan is controlled below the preset rotation speed, and the opening degree of the bypass electronic valve 500 is gradually increased, so that the aerodynamic noise of the refrigerant flowing towards the outdoor heat exchanger 900 during defrosting is reduced by avoiding the excessively severe change and steering of the high-temperature and high-pressure refrigerant in the refrigerant loop, and the rotation speed of the indoor fan is reduced, so that the large fluctuation of the indoor temperature can be avoided.
In summary, according to the method for suppressing the defrosting sound of the air conditioner 1000 in the embodiment of the present invention, when the air conditioner enters the defrosting mode, the opening degree of the bypass electronic valve 500 is gradually increased, so as to buffer the significant airflow impact and the valve body impact generated during defrosting, so as to effectively reduce the aerodynamic noise, and when the auxiliary heating system 200 is turned on, the rotation speed of the indoor fan is controlled to be associated with the opening degree of the bypass electronic valve 500, and the rotation speed and the opening degree are positively associated with each other, so as to mask the aerodynamic noise by white noise, thereby effectively suppressing the defrosting sound of the air conditioner, and improving the user experience.
In addition, it can be understood that, after defrosting is finished, the bypass electronic valve 500 is closed, and the rotating speed of the indoor fan is kept stable, so that the air conditioner 1000 has a better heating effect after defrosting is finished. As shown in fig. 2, according to some embodiments of the present invention, a method for controlling an opening degree of a bypass electronic valve 500 and a rotational speed of an indoor fan in a refrigerant circuit of an air conditioner 1000 by using a sectional control strategy includes: the opening degree of the bypass electronic valve 500 is controlled to be adjusted to the preset opening degree, the rotating speed of the indoor fan is controlled to be increased to the preset rotating speed, after the second preset time is continued, the opening degree of the bypass electronic valve 500 is controlled to be adjusted to the maximum opening degree, and the rotating speed of the indoor fan is controlled to be increased to the set maximum rotating speed.
Specifically, when the air conditioner 1000 switches to the defrosting mode, and the auxiliary heating system 200 is opened, the bypass electronic valve 500 and the indoor fan rotating speed are respectively switched to a preset opening degree and a preset rotating speed, so as to prevent the bypass electronic valve 500 from being suddenly opened and make the indoor fan rotating speed more reasonable, and preliminarily suppress defrosting noise, and further after the air conditioner 1000 works in the defrosting mode for a second preset time, the bypass electronic valve 500 is completely opened, the indoor fan rotating speed modulation is maximum, so as to cover aerodynamic noise generated after the bypass electronic valve 500 is completely opened by white noise of the indoor fan, and further improve the defrosting noise suppression effect.
Thus, when the defrosting sound suppression effect is improved, after the air conditioner 1000 works for the first preset time, the rotating speed of the indoor fan is further improved, so that the user can clearly perceive the defrosting process, the defrosting sound is further improved, and the user experience can be effectively improved.
In the following, the segmented control strategy of the present application is described in detail in one specific embodiment.
In one embodiment, the air conditioner 1000 is in a defrosting mode and the auxiliary heating system 200 is turned on.
The air conditioner 1000 controls the opening degree of the bypass electronic valve 500 and the rotating speed of the indoor fan in a refrigerant loop of the air conditioner 1000 by adopting a sectional control strategy within a first preset time (60 s).
The opening degree of the bypass electronic valve (500) is opened in two sections within a first preset time, the opening degree of the first section is exponentially increased to 50% along with the time (namely, from 0% to 50%), the rotating speed of the indoor fan is converted to be about 80% of the maximum rotating speed, after the operation is carried out for one minute stably, the opening degree of the second section is exponentially increased to 100% along with the time, and the rotating speed of the indoor fan is converted to be the maximum rotating speed.
Here, it should be noted that the process of switching the opening of the bypass electronic valve 500 from the preset opening to the maximum opening may be set to be adjusted multiple times according to a sectional control strategy, but is not limited to two times, and similarly, the rotating speed of the indoor fan may also be set to be adjusted multiple times according to the sectional control strategy, but is not limited to two times, but the adjustment duration of the first opening needs to be limited within the first preset time.
As shown in fig. 1, controlling the opening degree of the bypass electronic valve 500 to gradually increase to the maximum opening degree includes: the opening of the bypass electronic valve 500 is controlled to exponentially increase from zero to a maximum opening with time. That is, the opening degree of the bypass electronic valve 500 is gradually increased as time passes to avoid sudden opening of the bypass electronic valve 500, thereby reducing aerodynamic noise.
It is understood that the preset rotation speed is 50% of the maximum rotation speed, and the preset opening degree is 50% of the maximum opening degree. Therefore, the preset opening degree of the bypass electronic valve 500 and the preset rotating speed of the indoor fan are more reasonable, and the condition that the initial opening degree of the bypass electronic valve 500 is too large in the defrosting mode in which the auxiliary heating system 200 is started can be avoided, so that the defrosting sound is further reduced.
A computer-readable storage medium according to an embodiment of the second aspect of the present invention, has stored thereon a program for suppressing a defrosting sound of the air conditioner 1000, the program, when executed by a processor, implementing a method of suppressing a defrosting sound of the air conditioner 1000.
According to the computer-readable storage medium of the embodiment of the invention, by executing the program corresponding to the method for suppressing the defrosting sound of the air conditioner, the defrosting sound can be effectively suppressed on the premise of ensuring the defrosting effect, and the use experience of a user is improved.
As shown in fig. 5, the device 100 for suppressing the defrosting sound of the air conditioner 1000 according to the embodiment of the third aspect of the present invention includes: a determining module 110, configured to determine whether the auxiliary heating system 200 of the air conditioner 1000 is turned on when the air conditioner 1000 enters the defrosting mode; the suppression control module 120 is configured to control the opening degree of the bypass electronic valve 500 and the rotational speed of the indoor fan in the refrigerant circuit of the air conditioner 1000 by using a sectional control strategy within a first preset time when the determination module 110 determines that the auxiliary heating system 200 is turned on, so that the opening degree of the bypass electronic valve 500 is associated with the rotational speed of the indoor fan and is increased in sections; the suppression control module 120 is further configured to control the opening of the bypass electronic valve 500 to gradually increase to the maximum opening when the determination module 110 determines that the auxiliary heating system 200 is not turned on, and control the rotation speed of the indoor fan to be less than or equal to a preset rotation speed.
According to the suppression device 100 of the embodiment of the invention, the determination module 110 determines whether the auxiliary heating system 200 is turned on, and the suppression control module 120 controls the bypass electronic valve 500 to be gradually turned on according to the sectional control strategy within a first preset time when the auxiliary heating system 200 is turned on, the indoor fan is controlled to gradually increase the rotation speed according to the sectional control strategy, and when the auxiliary heating system 200 is turned off, the bypass electronic valve 500 is controlled to be gradually turned on from the off state to the full on, and the rotation speed of the indoor fan is controlled to be kept less than the preset rotation speed, so that the suppression device 100 of the embodiment of the invention can effectively suppress the defrosting sound and improve the user experience.
It can be understood that, referring to fig. 2, the suppression control module 120 is further configured to control the opening degree of the bypass electronic valve 500 to be adjusted to a preset opening degree, control the rotation speed of the indoor fan to be increased to a preset rotation speed, and control the opening degree of the bypass electronic valve 500 to be adjusted to a maximum opening degree after a second preset time, and control the rotation speed of the indoor fan to be increased to a set maximum rotation speed.
Further, the restraint control module 120 is also configured to control the opening of the bypass electronic valve 500 to exponentially increase with time from zero to a maximum opening. Thus, the opening degree of the bypass electronic valve 500 is positively correlated with time, and the opening degree of the bypass electronic valve 500 is adjusted more appropriately.
Preferably, the preset rotation speed is 50% of the maximum rotation speed, and the preset opening is 50% of the maximum opening.
As shown in fig. 3, the air conditioner 1000 according to the fourth embodiment of the present invention includes an indoor heat exchanger 300, an outdoor heat exchanger 900, a compressor 400, and a throttle valve 800, the air conditioner 1000 further includes a memory, a processor, and a program for suppressing a defrosting sound of the air conditioner 1000 stored in the memory and operable on the processor, and when the processor executes the program for suppressing, a method for suppressing the defrosting sound of the air conditioner 1000 is implemented.
According to the air conditioner 1000 of the embodiment of the present invention, by using the above-mentioned suppression device 100 and implementing the above-mentioned suppression method through the above-mentioned suppression program, the noise of the air conditioner 1000 in the defrosting mode is effectively reduced, so that the air conditioner 1000 has better use experience.
As shown in fig. 3, when the auxiliary heating system 200 is a heat-storage heating system, an air outlet of the compressor 400 is connected to a first port of the four-way valve 600, a return air port of the compressor 400 is connected to a second port of the four-way valve 600 through the solenoid valve 700, the heat-storage heating system is connected to both ends of the solenoid valve 700 in parallel, a third port of the four-way valve 600 is connected to a first port of the indoor heat exchanger 300, a second port of the indoor heat exchanger 300 is connected to a first end of the throttle valve 800, a second end of the throttle valve 800 is connected to a first port of the outdoor heat exchanger 900, the bypass electronic valve 500 is connected to the throttle valve 800 in parallel, and a second port of the outdoor heat exchanger 900 is connected to a fourth port of the four-way valve 600.
Therefore, the bypass electronic valve 500 controls the high-temperature refrigerant to flow towards the outdoor heat exchanger 900, defrosting of the outdoor heat exchanger 900 is achieved, meanwhile, the refrigerant is prevented from suddenly turning or the flow speed is too high by adjusting the opening degree of the bypass valve, and defrosting noise can be reduced.
As shown in fig. 4, when the auxiliary heating system 200 is an electric auxiliary heating system, the air outlet of the compressor 400 is connected to the first port of the four-way valve 600, the return air port of the compressor 400 is connected to the second port of the four-way valve 600, the third port of the four-way valve 600 is connected to the first port of the indoor heat exchanger 300, the second port of the indoor heat exchanger 300 is connected to the first end of the throttle valve 800, the second end of the throttle valve 800 is connected to the first port of the outdoor heat exchanger 900, the second port of the outdoor heat exchanger 900 is connected to the fourth port of the four-way valve 600, the electric auxiliary heating system is disposed corresponding to the outdoor heat exchanger 900, and the bypass electronic valve 500 is connected between the air outlet of the compressor 400 and the first port of the outdoor heat exchanger 900.
The technical effect of the air conditioner 1000 shown in fig. 4 is the same as that of the air conditioner 1000 using the heat storage heating system, and the description thereof is omitted.
As shown in FIG. 7, in some embodiments, the bypass electronic valve 500 is encased within a damping vibration device 530.
Specifically, the damping vibration device 530 may be configured as a vibration damping box filled with a damping medium, a vibration damping rubber pad, or the like, so as to improve the mode shape of the bypass electronic valve 500, thereby preventing resonance between the bypass electronic valve 500 and surrounding components (e.g., a refrigerant pipeline) and reducing the operating noise of the air conditioner 1000.
Referring to fig. 7, a spring plate 520 is disposed at a position of a front three-way shunt 510 of the bypass electronic valve 500 for buffering, and the spring plate 520 is disposed in a damping device 530.
It is understood that the damping vibration absorbing device 530 may be further configured as a coating material (e.g., damping paint), and the mode adjustment of the bypass electronic valve 500 is realized by coating the damping paint on the bypass electronic valve 500 and the spring plate 520, so as to reduce the operation noise of the air conditioner 1000.
Next, the defrosting sound suppression effect of the present application will be described in detail with reference to fig. 8 to 11.
As shown in fig. 8, fig. 8 is a waterfall graph of indoor defrosting sounds in a defrosting mode of the air conditioner 1000 of the present application, wherein the abscissa is Khz (sound frequency unit), the left ordinate is S (time unit), and the right ordinate is db/20 uba (human ear perceived sound intensity under 20 pa).
Referring to fig. 8, white marked lines indicate that, after the air conditioner 1000 of the present application starts defrosting, the distribution frequency bandwidth of aerodynamic noise generated by the refrigerant in the refrigerant circuit is high, and the duration time is short, and the auditory sensation is obvious about the first 10s after the defrosting mode is turned on, and gradually decreases after 10 s.
As shown in fig. 9, fig. 9 is a waterfall graph of indoor defrosting sounds in a defrosting mode of a prior art air conditioner, wherein the abscissa is K Hz (sound frequency unit), the left ordinate is S (time unit), and the right ordinate is db/20 uba (human ear perceived sound intensity under 20 pa).
Referring to fig. 9, white marks are linear, and after defrosting of the conventional air conditioner is started, the frequency of aerodynamic noise is concentrated at 10K Hz, the auditory sensation is obvious, and the noise exists in the whole defrosting process.
As shown in fig. 10, fig. 10 is a graph comparing the average sound pressure level of the air conditioner 1000 of the present application with that of the prior art air conditioner within 60s after the start of the defrosting mode is turned on, wherein the abscissa f/Hz (frequency range) and the ordinate db spl (sound pressure level) are plotted. As can be seen from the figure, within 60s after the defrosting mode is started, the bypass electronic valve 500 of the air conditioner 1000 of the present application is at the preset opening (opening is 50%), the fan rotation speed is at the preset rotation speed (about 80% of the maximum rotation speed), the average sound pressure level is 41.9db (a), the bypass electronic valve of the air conditioner of the prior art is at the fully open state, the fan is at the maximum rotation speed, and the average sound pressure level is 44.2db (a).
As shown in fig. 11, fig. 11 is a graph comparing the average sound pressure level of the air conditioner 1000 of the present application with that of the air conditioner of the related art within 60s to 110s after the defrosting mode is turned on, wherein the abscissa f/Hz (frequency range) and the ordinate db spl (sound pressure level) are plotted. As can be seen from the figure, within 60s to 110s after the defrosting mode is started, the bypass electronic valve 500 of the air conditioner 1000 of the present application is gradually opened from the preset opening to the maximum opening, the fan speed is gradually increased to the maximum speed in association with the fan speed, the average sound pressure level is 39.1db (a), the bypass electronic valve of the air conditioner of the prior art is in the fully opened state, the fan is at the maximum speed, and the average sound pressure level is 40.5db (a).
In summary, the air conditioner 1000 using the suppression method of the present application has short noise duration, unobvious listening sensation, and low average sound pressure level during operation, and can effectively suppress the defrosting sound.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features.
In the description of the present invention, "a plurality" means two or more.
In the description of the present invention, the first feature being "on" or "under" the second feature may include the first and second features being in direct contact, and may also include the first and second features being in contact with each other not directly but through another feature therebetween.
In the description of the invention, "above", "over" and "above" a first feature in a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (13)
1. A method for suppressing defrosting noise of an air conditioner is characterized by comprising the following steps:
when the air conditioner enters a defrosting mode, judging whether an auxiliary heating system of the air conditioner is started or not;
if so, controlling the opening degree of a bypass electronic valve and the rotating speed of an indoor fan in a refrigerant loop of the air conditioner by adopting a sectional type control strategy within a first preset time so as to enable the opening degree of the bypass electronic valve to be related to the rotating speed of the indoor fan and increase in sections;
if not, controlling the opening degree of the bypass electronic valve to gradually increase to the maximum opening degree, and controlling the rotating speed of the indoor fan to be less than or equal to the preset rotating speed
Adopt sectional type control strategy control the aperture of bypass electronic valve and the rotational speed of indoor fan in the refrigerant return circuit of air conditioner includes:
firstly, controlling the opening degree of the bypass electronic valve to be adjusted to a preset opening degree, controlling the rotating speed of the indoor fan to be increased to a preset rotating speed, and after the second preset time, controlling the opening degree of the bypass electronic valve to be adjusted to the maximum opening degree, and controlling the rotating speed of the indoor fan to be increased to a set maximum rotating speed; wherein
The auxiliary heating system is a heat storage heating system, and a bypass electronic valve and a throttle valve of the air conditioner are arranged between the indoor heat exchanger and the outdoor heat exchanger in parallel; or the auxiliary heating system is an electric auxiliary heating system, and the bypass electronic valve is arranged between the air outlet of the compressor and the outdoor heat exchanger.
2. The method of suppressing a defrosting sound of an air conditioner according to claim 1, wherein controlling the opening degree of the bypass electronic valve to be gradually increased to a maximum opening degree includes:
and controlling the opening degree of the bypass electronic valve to exponentially increase from zero to the maximum opening degree along with time.
3. The method for suppressing a defrosting sound of an air conditioner according to any one of claims 1 to 2, wherein the preset rotation speed is 50% of the maximum rotation speed, and the preset opening degree is 50% of the maximum opening degree.
4. A computer-readable storage medium, characterized in that a program for suppressing a defrosting sound of an air conditioner is stored thereon, which when executed by a processor implements a method for suppressing a defrosting sound of an air conditioner according to any one of claims 1 to 3.
5. A frost noise suppression device for an air conditioner, comprising:
the judging module is used for judging whether an auxiliary heating system of the air conditioner is started or not when the air conditioner enters a defrosting mode;
the suppression control module is used for controlling the opening of a bypass electronic valve and the rotating speed of an indoor fan in a refrigerant loop of the air conditioner by adopting a sectional type control strategy within a first preset time when the judging module judges that the auxiliary heating system is started, so that the opening of the bypass electronic valve is related to the rotating speed of the indoor fan and is increased in sections;
the suppression control module is further used for controlling the opening of the bypass electronic valve to gradually increase to the maximum opening when the judging module judges that the auxiliary heating system is not started, and controlling the rotating speed of the indoor fan to be less than or equal to a preset rotating speed; wherein
The auxiliary heating system is a heat storage heating system, and a bypass electronic valve and a throttle valve of the air conditioner are arranged between the indoor heat exchanger and the outdoor heat exchanger in parallel; or the auxiliary heating system is an electric auxiliary heating system, and the bypass electronic valve is arranged between the air outlet of the compressor and the outdoor heat exchanger.
6. The apparatus for suppressing a defrosting sound of an air conditioner according to claim 5, wherein the suppression control module is further configured to,
and firstly controlling the opening degree of the bypass electronic valve to be adjusted to a preset opening degree, controlling the rotating speed of the indoor fan to be increased to a preset rotating speed, and controlling the opening degree of the bypass electronic valve to be adjusted to the maximum opening degree and controlling the rotating speed of the indoor fan to be increased to the set maximum rotating speed after the second preset time is continued.
7. The apparatus for suppressing a defrosting sound of an air conditioner according to claim 6, wherein the suppression control module is further configured to control the opening degree of the bypass electronic valve to exponentially increase from zero to a maximum opening degree with time.
8. The apparatus for suppressing a defrosting sound of an air conditioner according to any one of claims 6 to 7, wherein the preset rotation speed is 50% of the maximum rotation speed, and the preset opening degree is 50% of the maximum opening degree.
9. An air conditioner, comprising an indoor heat exchanger, an outdoor heat exchanger, a compressor and a throttle valve, further comprising a memory, a processor and a program for suppressing the defrosting sound of the air conditioner stored in the memory and operable on the processor, wherein the processor implements the method for suppressing the defrosting sound of the air conditioner according to any one of claims 1 to 3 when executing the program for suppressing.
10. The air conditioner according to claim 9, wherein when the auxiliary heating system is a regenerative heating system, the air outlet of the compressor is connected to a first port of a four-way valve, a return air port of the compressor is connected to a second port of the four-way valve through a solenoid valve, the regenerative heating system is connected in parallel to both ends of the solenoid valve, a third port of the four-way valve is connected to a first port of the indoor heat exchanger, a second port of the indoor heat exchanger is connected to a first end of the throttle valve, a second end of the throttle valve is connected to a first port of the outdoor heat exchanger, and a second port of the outdoor heat exchanger is connected to a fourth port of the four-way valve.
11. The air conditioner according to claim 9, wherein when the auxiliary heating system is an electric auxiliary heating system, the air outlet of the compressor is connected to a first port of a four-way valve, the return air port of the compressor is connected to a second port of the four-way valve, a third port of the four-way valve is connected to a first port of the indoor heat exchanger, a second port of the indoor heat exchanger is connected to a first end of the throttle valve, a second end of the throttle valve is connected to a first port of the outdoor heat exchanger, a second port of the outdoor heat exchanger is connected to a fourth port of the four-way valve, the electric auxiliary heating system is disposed in correspondence with the outdoor heat exchanger, and the bypass electronic valve is connected between the air outlet of the compressor and the first port of the outdoor heat exchanger.
12. An air conditioner according to any one of claims 10 to 11 wherein the bypass electronic valve is housed within a damping vibration damper.
13. The air conditioner as claimed in claim 12, wherein a spring plate is provided at a position of the bypass tee of the bypass electronic valve for buffering, and the spring plate is provided in the damping device.
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| CN112797682A (en) * | 2020-12-30 | 2021-05-14 | 青岛海容商用冷链股份有限公司 | Defrosting system and method and commercial refrigeration display cabinet |
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