CN111023315B - Indoor unit of air conditioner - Google Patents
Indoor unit of air conditioner Download PDFInfo
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- CN111023315B CN111023315B CN201911258523.5A CN201911258523A CN111023315B CN 111023315 B CN111023315 B CN 111023315B CN 201911258523 A CN201911258523 A CN 201911258523A CN 111023315 B CN111023315 B CN 111023315B
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- fan
- rotating speed
- heat exchange
- indoor unit
- air conditioner
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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
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0071—Indoor units, e.g. fan coil units with means for purifying supplied air
- F24F1/0073—Indoor units, e.g. fan coil units with means for purifying supplied air characterised by the mounting or arrangement of filters
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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
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/28—Arrangement or mounting of filters
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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
- F24F2140/00—Control inputs relating to system states
- F24F2140/10—Pressure
- F24F2140/12—Heat-exchange fluid pressure
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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
Abstract
The invention discloses an air conditioner indoor unit which comprises a heat exchange air channel, wherein a fan and a purification filter screen are arranged in the heat exchange air channel, the circulated air carries out heat exchange in the heat exchange air channel, the fan is used for driving the air to flow in the heat exchange air channel and controlling the flow velocity of the air, and the purification filter screen purifies the air circulated in the heat exchange air channel. The purification filter screen is made by the piezoelectric composite, and the rotational speed of fan is periodic variation, when the fan rotational speed changes, will arouse the surface pressure change that purifies the filter screen, and then helps improving piezoelectric composite's regenerative charge ability, improves piezoelectric composite's adsorption efficiency to particulate matter pollution to improve the purification effect of air conditioner indoor unit to the air.
Description
Technical Field
The invention relates to the technical field of air purification, in particular to an air conditioner indoor unit with an air purification function.
Background
Along with the continuous improvement of living standard of people, people also put forward higher and higher requirements on living environment. In order to maintain a comfortable ambient temperature, an air conditioner has become an indispensable equipment in human life. In recent years, in order to further improve the comprehensive performance of the air conditioner, most of the existing air conditioners are provided with a purification function, so that the air conditioner not only can perform a heat exchange function on indoor air, but also can perform a purification function on the indoor air.
The piezoelectric composite material is also called composite high-molecular piezoelectric material, and is a piezoelectric material composed of thermoplastic polymer and inorganic piezoelectric material. The piezoelectric composite material is a novel material developed for over thirty years, is a functional material with piezoelectric effect, and can generate an electric field due to mechanical deformation and also generate mechanical deformation due to the action of the electric field.
The piezoelectric composite material generates electric charges by means of deformation under the action of external pressure, the electric charges have electrostatic adsorption capacity on particulate pollution, the particulate pollution is purified, the external force can be charged repeatedly under the continuous action, and the service life is prolonged. Therefore, in recent years, piezoelectric composite materials are receiving more and more attention and research in the field of air particulate purification and the like.
How to fully utilize the characteristics of small wind resistance and renewable electric charge of the piezoelectric composite material to apply the piezoelectric composite material to the technical fields of air conditioners, purifiers, fresh air blowers and the like, the piezoelectric composite material realizes the purification effect on air, and the piezoelectric composite material is a technical direction for continuous innovation and expansion in the field.
Disclosure of Invention
In view of the above, the present invention provides an air conditioner indoor unit, wherein a purification filter screen in the air conditioner indoor unit is made of a piezoelectric composite material, and pressure change on the purification filter screen is caused by a change of a fan rotation speed, so that an ability of the piezoelectric composite material to regenerate charges is improved, and an air purification effect of the purification filter screen on air is improved.
In order to achieve the purpose, the invention adopts the following technical scheme:
the present invention provides an indoor unit of an air conditioner, comprising: the heat exchange air flue is used for circulating gas, and the gas carries out heat exchange in the heat exchange air flue; the fan is arranged in the heat exchange air duct and used for driving the gas to flow in the heat exchange air duct and controlling the flow rate of the gas; the purification filter screen is arranged in the heat exchange air duct and is used for purifying the gas flowing in the heat exchange air duct; the purification filter screen is made of a piezoelectric composite material; the rotating speed of the fan changes periodically, and the surface pressure of the purification filter screen changes along with the rotating speed change of the fan.
Further, the operation of the fan has a normal operation stage and a rotation speed change operation stage; the normal operation stage and the rotating speed change operation stage are alternately operated; in each of the rotational speed change operation stages, the operation of the fan has a plurality of rotational speed change operation sub-stages.
Further, the fan has a minimum rotation speed; when the current rotating speed of the fan is greater than the minimum rotating speed, the rotating speed of the fan is firstly reduced and then increased when the fan is in the rotating speed change operation sub-stage.
Further, the rotating speed of the fan is firstly reduced and then increased to recover to the current wind speed.
Further, the time for the fan to operate at a reduced speed is shorter than the time for the fan to operate at the current speed at an increased speed.
Furthermore, in each rotating speed change operation stage, the number of times of the rotating speed change operation sub-stage is 3-7 times.
Further, the fan has a minimum wind speed; and when the current rotating speed of the fan is equal to the minimum wind speed and the fan is in the rotating speed change operation sub-stage, the rotating speed of the fan is increased and then decreased.
Further, the rotating speed of the fan is increased and then reduced to be recovered to the current wind speed.
Further, the time for the fan to operate at an increased speed is shorter than the time for the fan to operate at the current wind speed at a decreased speed.
Furthermore, in each rotating speed change operation stage, the number of times of the rotating speed change operation sub-stage is 2-5 times.
Compared with the prior art, the technical scheme of the invention has the following technical effects:
the utility model discloses an air conditioner indoor unit, locate the purification filter screen in the heat transfer wind channel and make by piezoelectric composite, when locating the fan rotational speed in the heat transfer wind channel and change, the gas flow velocity in the heat transfer wind channel will change, the pressure that the air current acted on purifying the filter screen also changes thereupon, and then help improving piezoelectric composite's regeneration charge ability, furthermore, the fan rotational speed is periodic variation, the pressure variation who is equivalent to further strengthened piezoelectric composite, its regeneration charge ability will further strengthen, and then improve piezoelectric composite's adsorption efficiency to particulate matter pollution, thereby improve the purification effect of air conditioner indoor unit to the air.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an air conditioner indoor unit according to an embodiment of the present invention;
FIG. 2 is a first schematic diagram illustrating the variation of the operating speed of the fan in the indoor unit of the air conditioner according to the present invention;
FIG. 3 is a second schematic diagram illustrating the variation of the operating speed of the fan according to the indoor unit of the air conditioner;
fig. 4 is a schematic diagram illustrating the variation of the operating speed of the fan according to the embodiment of the air conditioner of the present invention.
Reference numerals:
01-a purification filter screen, 02-a fan, 03-a heat exchanger, 04-a heat exchange air duct, 05-a return air inlet and 06-an air outlet;
p-normal operation stage of the fan;
k-the operation stage of the change of the rotating speed of the fan;
k1-fan speed change operation sub-stage;
v-the rotational speed of the fan;
t-the time of fan operation.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "front", "rear", "left", "right", "inside", "outside", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected unless otherwise explicitly stated or limited. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
In the description of the present invention, "a plurality" means two or more unless otherwise specified.
The invention discloses an air conditioner indoor unit, referring to fig. 1, a heat exchange air channel 04 is formed inside the air conditioner indoor unit, a fan 02, a purification filter screen 01 and a heat exchanger 03 are arranged in the heat exchange air channel 04, wherein the heat exchange air channel 04 is used for circulating gas, and the gas generates heat exchange between the heat exchange air channel 04 and the heat exchanger 03; the fan 02 is used for driving gas to flow in the heat exchange air duct 04 and controlling the flow rate of the gas; the purification filter screen 01 purifies the air flowing in the heat exchange air duct 04 to purify the air quality blown out from the indoor unit of the air conditioner.
The two ends of the heat exchange air duct 04 are provided with an air return opening 05 and an air outlet 06, in this embodiment, preferably, the purification filter screen 01 is arranged at the air return opening 05, the outside air enters the heat exchange air duct 04 through the air return opening 05 under the action of the fan 02, the air is firstly purified when flowing through the purification filter screen 01, the purified air is subjected to heat exchange with the heat exchanger 03 again, and then is blown out from the air outlet 05. When the purified air flows through the heat exchange air duct 04, the pollution of impurities such as particles in the air to the components such as the heat exchange air duct 04, the fan 02, the heat exchanger 03 and the like can be reduced, and the service life of the indoor unit of the air conditioner is prolonged.
One of the purposes of the present invention is to improve the air purification effect of the purification filter net 01.
Specifically, the purification filter screen 01 is made of a piezoelectric composite material, when the pressure acting on the piezoelectric composite material changes, the piezoelectric composite material generates electric charges, and the electric charges have adsorption capacity on impurities such as particles in the air, so that the air is purified.
In this embodiment, the change of the surface pressure of the piezoelectric composite material is caused by the change of the rotation speed of the fan 02.
Specifically, when the rotating speed of the fan 02 changes, the flow rate of the gas in the heat exchange air duct 04 changes, and the pressure of the airflow acting on the purification filter screen 01 changes accordingly, so that the improvement of the charge regeneration capacity of the piezoelectric composite material is facilitated.
Furthermore, the rotating speed of the fan 02 changes periodically, which is equivalent to further enhancing the pressure change of the piezoelectric composite material, the charge regeneration capacity of the piezoelectric composite material is further enhanced, and the adsorption capacity of the piezoelectric composite material on particulate pollution is further improved, so that the air purification effect of the air conditioner indoor unit is improved.
In order to obviously improve the regenerative charge capacity of the piezoelectric composite material and improve the purification effect of the purification filter screen 01 on air, the change of the rotating speed of the fan 02 is mainly improved.
Referring to fig. 2 and 3, the operation of the fan 02 has a normal operation phase (marked as P) and a rotation speed change operation phase (marked as K), and the rotation speed change operation phase K of the fan is mainly used for causing the surface pressure of the purification filter screen 01 to change and improving the adsorption capacity of the piezoelectric composite material to particulate matters.
The normal operation stage P and the rotation speed change operation stage K operate alternately, and the time of the fan normal operation stage P is far longer than that of the rotation speed change operation stage K, so that the influence of long-time operation of the fan rotation speed change operation stage K on the refrigerating or heating performance of the indoor unit of the air conditioner can be avoided.
In this embodiment, the time mark of the normal operation phase P of the fan is t1, and the time of t1 is preferably greater than 30 min.
Further, in each rotation speed change operation stage K, the operation of the fan 02 has a plurality of rotation speed change operation sub-stages K1, and in a single rotation speed change operation sub-stage K1, the rotation speed change of the fan 02 can be reduced first and then increased or increased first and then reduced, and the rotation speed of the fan 02 is in which change form, which is related to the rotation speed of the fan 02 in the normal operation stage P of the fan.
In a single rotation speed change operation sub-stage K1, the change of the surface pressure of the purification filter screen 01 can be caused by switching the fan 02 between a low rotation speed and a high rotation speed every time, so that the multiple changes of the surface pressure of the purification filter screen 01 can be caused by the fan 02 in the rotation speed change operation stage K, and the purposes of improving the regenerative charge capacity of the piezoelectric composite material and improving the adsorption capacity of the piezoelectric composite material on particles are achieved.
The variation of the rotational speed of the fan 02 is described in detail below in two cases, the fan 02 having a minimum rotational speed VminThe variation of the rotational speed of the fan 02, the rotational speed of the fan 02 at the normal operating stage P of the fan, and the minimum rotational speed V of the fanminThe relationship between them.
Specifically, referring to fig. 2, when the fan 02 is in the normal operation stage P of the fan, the rotation speed of the fan 02 is set to V, and if V > VminIf the fan 02 is in the fan rotation speed change operation sub-phase K1, the rotation speed of the fan 02 is firstly decreased by Δ V and then increased by t2 time, and then increased by t3 time, because in this case, if the rotation speed of the fan 02 is increased and then decreased, although the pressure change on the surface of the purification filter screen 01 can be caused, the energy consumption of the indoor unit of the air conditioner is additionally increased.
Further, the rotation speed of the fan 02 is preferably decreased by Δ V and then increased to return to the current wind speed V, so that the wind speed change causes a pressure change on the surface of the purification filter screen 01 without additionally increasing the energy consumption of the indoor unit of the air conditioner.
Further, the time t2 for the speed reduction operation of the fan 02 is less than the time t3 for the speed reduction operation of the fan 02 to be increased to the current wind speed V, because the wind speed reduction can affect the cooling or heating effect of the indoor unit of the air conditioner to a certain extent, but generally does not cause discomfort, in order to reduce the influence of the wind speed reduction on the cooling or heating effect of the air conditioner, the time t2 is not set to be too long, and meanwhile, the stability is adjusted by combining the rotating speed of the fan 02, in the embodiment, the time t2 is preferably set to be not more than 10s, the time is a reference setting value, and the specific application is subject to practical.
Meanwhile, in order to avoid the frequent switching of the wind speed to cause the relay action noise or wind sound change feeling to the user, the time t3 should not be set too short, and the time t3 is preferably set to be not less than 10s in the embodiment, and the time is a reference setting value, and the specific application is subject to actual test and user experience.
Furthermore, in each rotation speed change operation phase K, the number n0 of the rotation speed change operation sub-phase K1 is 3-7 times, preferably 5 times, so as to avoid the frequent switching of the wind speed to cause the relay action noise or the wind sound change feeling for the user, and the value is a reference setting value, and the specific application is subject to the actual test and the user experience.
In another case, referring to fig. 3, when the fan 02 is in the fan normal operation phase P, the rotation speed of the fan 02 is set to be V, and if V = VminIf the fan 02 is in the fan speed change operation sub-stage K1, the rotation speed of the fan 02 is increased by Δ V for t4 time and then decreased for t5 time, and in this case, the rotation speed of the fan 02 cannot be decreased any more, so the wind speed can be adjusted only by increasing the wind speed.
Further, the rotation speed of the fan 02 is preferably increased by Δ V and then decreased to return to the current wind speed V, so that the wind speed change causes a pressure change on the surface of the purification filter screen 01 without additionally increasing the energy consumption of the indoor unit of the air conditioner.
Further, the time t4 for the speed-increasing operation of the fan 02 is less than the time t5 for the speed-decreasing operation of the fan 02 to the current wind speed V, because the wind speed increases to improve the cooling or heating effect of the air conditioner, but people often feel uncomfortable, in order to reduce the influence of the wind speed increase on people, the time t4 is not set too long, and meanwhile, the stability is adjusted by combining the rotating speed of the fan 02, in the embodiment, the time t4 is preferably set to be not more than 5s, the time is a reference setting value, and the specific application is based on actual tests and user experience.
Meanwhile, in order to avoid the frequent switching of the wind speed to cause the relay action noise or wind sound change feeling to the user, the time t5 should not be set too short, and the time t5 is preferably set to be not less than 10s in the embodiment, and the time is a reference setting value, and the specific application is subject to actual test and user experience.
Furthermore, in each rotation speed change operation phase K, the number n1 of the rotation speed change operation sub-phase K1 is 2-5 times, preferably 3 times, so as to avoid the frequent switching of the wind speed to cause the relay action noise or wind sound change feeling for the user, and the value is a reference setting value, and the specific application is subject to the actual test and the user experience.
It should be noted that Δ V is a system setting value, and the specific size thereof is determined according to the performance of the air conditioner indoor unit, the current rotating speed V, and the minimum rotating speed VminAnd then.
The control flow of the fan rotation speed variation will be described in detail with reference to fig. 4.
Step S1: the indoor unit operates, and the fan 02 is started;
step S2: the fan 02 operates for t1 time in the fan normal operation stage P;
step S3: judging whether the current rotating speed of the fan 02 is the minimum rotating speed V or notminIf the current rotating speed of the fan 02 is greater than VminThe process proceeds to step S4, and if the current rotation speed of the fan 02 is equal to VminStep S7 is entered;
step S4: the fan 02 enters a fan rotating speed change operation stage K, and n =0 is counted;
step S5: after the rotating speed of the fan 02 is reduced by the first gear or the speed reduction delta V runs for t2 time, the original rotating speed V is recovered to continue running for t3 time, and the count n = n + 1;
step S6: judging whether n is equal to a system set value n0 (n 0 is more than 0 and less than or equal to 5), if yes, returning to the step S1; if not, returning to the step S5;
step S7: the fan 02 enters a fan rotating speed change operation stage K, and n =0 is counted;
step S8: after the rotating speed of the fan 02 is increased by one gear or increased by delta V for t4 time, the original rotating speed V is recovered to continue to operate for t5 time, and the count n = n + 1;
step S9: judging whether n is equal to a system set value n1 (n 1 is more than 0 and less than or equal to 3), if yes, returning to the step S1; if not, the process returns to step S8.
In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. An indoor unit of an air conditioner, comprising:
the heat exchange air flue is used for circulating gas, and the gas carries out heat exchange in the heat exchange air flue;
the fan is arranged in the heat exchange air duct and used for driving the gas to flow in the heat exchange air duct and controlling the flow rate of the gas;
the purification filter screen is arranged in the heat exchange air duct and is used for purifying the gas flowing in the heat exchange air duct;
it is characterized in that the preparation method is characterized in that,
the purification filter screen is made of a piezoelectric composite material;
the rotating speed of the fan changes periodically, and the surface pressure of the purification filter screen changes along with the change of the rotating speed of the fan;
the operation of the fan is provided with a normal operation stage and a rotating speed change operation stage, and the time of the normal operation stage is longer than that of the rotating speed change operation stage;
the normal operation stage and the rotating speed change operation stage are alternately operated;
in each of the rotational speed change operation stages, the operation of the fan has a plurality of rotational speed change operation sub-stages.
2. An indoor unit of an air conditioner according to claim 1,
the fan has a minimum rotational speed;
when the current rotating speed of the fan is greater than the minimum rotating speed, the rotating speed of the fan is firstly reduced and then increased when the fan is in the rotating speed change operation sub-stage.
3. An indoor unit of an air conditioner according to claim 2,
and the rotating speed of the fan is firstly reduced and then increased to be recovered to the current rotating speed.
4. An indoor unit of an air conditioner according to claim 3,
and the time for the fan to run in a speed reduction mode is shorter than the running time for the fan to run to the current rotating speed in a speed increasing mode.
5. An indoor unit of an air conditioner according to any one of claims 2 to 4,
in each of the rotational speed change operation phases, the number of the rotational speed change operation sub-phases is 3-7.
6. An indoor unit of an air conditioner according to claim 1,
the fan has a minimum rotational speed;
and when the current rotating speed of the fan is equal to the minimum rotating speed and the fan is in the rotating speed change operation sub-stage, the rotating speed of the fan is increased and then decreased.
7. An indoor unit of an air conditioner according to claim 6,
the rotating speed of the fan is increased and then reduced to be recovered to the current rotating speed.
8. An indoor unit of an air conditioner according to claim 7,
and the time for accelerating the fan is shorter than the running time for decelerating the fan to the current rotating speed.
9. An indoor unit of an air conditioner according to any one of claims 6 to 8,
in each of the rotational speed change operation phases, the number of the rotational speed change operation sub-phases is 2-5.
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| CN201911258523.5A CN111023315B (en) | 2019-12-10 | 2019-12-10 | Indoor unit of air conditioner |
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| CN201911258523.5A CN111023315B (en) | 2019-12-10 | 2019-12-10 | Indoor unit of air conditioner |
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| CN112594860A (en) * | 2020-12-09 | 2021-04-02 | 江苏大学 | Intelligent sterilization air purifier modified by nano piezoelectric fiber material |
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| CN107246713A (en) * | 2017-06-27 | 2017-10-13 | 广东美的制冷设备有限公司 | Control method, controller, air conditioner and computer-readable recording medium |
| CN207870326U (en) * | 2017-11-03 | 2018-09-18 | 北京中科艾加科技有限公司 | A kind of self-driving type piezoelectricity haze mask |
| CN109746120A (en) * | 2017-11-03 | 2019-05-14 | 北京中科艾加科技有限公司 | Filter device including piezo-electricity composite material and its application in absorption Atmospheric particulates |
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