CN112303849B - Control method for reducing noise of air conditioner and air conditioner using same - Google Patents
Control method for reducing noise of air conditioner and air conditioner using same Download PDFInfo
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- CN112303849B CN112303849B CN202011179670.6A CN202011179670A CN112303849B CN 112303849 B CN112303849 B CN 112303849B CN 202011179670 A CN202011179670 A CN 202011179670A CN 112303849 B CN112303849 B CN 112303849B
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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
- F24F11/62—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
- F24F11/65—Electronic processing for selecting an operating mode
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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
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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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
- F24F2120/00—Control inputs relating to users or occupants
- F24F2120/10—Occupancy
- F24F2120/12—Position of occupants
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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
- F24F2120/00—Control inputs relating to users or occupants
- F24F2120/20—Feedback from users
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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
- F24F2130/00—Control inputs relating to environmental factors not covered by group F24F2110/00
- F24F2130/40—Noise
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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 invention relates to a control method for reducing noise of an air conditioner and the air conditioner using the same. The control method comprises the following steps: judging whether a person exists in the regulated room; when people exist in the room, judging whether the light intensity in the room is higher than a preset light intensity; when the light intensity in the room is higher than the preset light intensity, judging whether the heat emitted by the human body is lower than a preset heat value or not; when the heat emitted by the human body is lower than the preset heat value, judging whether the noise in the room is higher than a preset noise value; and reducing a frequency of a compressor of the air conditioner based on heat emitted from a human body when noise in the room is greater than the predetermined noise value. By the control method, the noise requirement of the user in the room can be automatically evaluated, and the operation of the air conditioner can be automatically controlled according to the noise requirement of the user and the actual indoor noise level, so that the life quality of the user can be improved.
Description
Technical Field
The present invention relates to a method of controlling an air conditioning system, and more particularly, to a control method for reducing noise of an air conditioner and an air conditioner using the same.
Background
Air conditioners, including but not limited to integrated air conditioners and split air conditioners and the like, typically include a compressor, an outdoor heat exchanger (which functions as a condenser in a cooling mode), a throttling mechanism (e.g., an expansion valve), and one or more indoor heat exchangers. The compressor, the outdoor heat exchanger, and the throttle mechanism together may form an outdoor unit or an outdoor unit; the indoor heat exchanger may form an indoor unit or an indoor unit. The air conditioner may have only a cooling function, may have cooling and heating functions, or may have other special functions. When the air conditioner is operated, a compressor, an outdoor fan, and an indoor fan included therein are all brought into an operation state and generate a certain noise. When the air conditioner is operated to adjust the temperature of the environment of the room to be conditioned, noise in the room to be conditioned may increase. Users may have higher demands on noise levels in certain environments, such as sleeping or resting or other environments where quietness is desired. In this case, noise exceeding the expectation of the user may cause interference to the user, affecting the user's experience with the air conditioner.
In order to control the noise generated by the air conditioner, the conventional air conditioning system generally controls the operation of the air conditioner according to the indoor and outdoor ambient temperatures of the air conditioner. Specifically, the existing air conditioning system is controlled according to the indoor and outdoor ambient temperatures and the operation capacity of the indoor unit. When the ambient temperature and the number of the indoor units are fixed, the running frequency of the compressor of the outdoor unit is unchanged, and the generated noise is also unchanged. This control method does not automatically identify and satisfy the particular low noise level requirements of users in the conditioned room. In addition, the conventional air conditioner is generally provided with a mute mode. The mute mode is generally manually controlled by a line controller, a remote controller or a mobile phone intelligent module of the outdoor unit, and is inconvenient to operate and brings great inconvenience to users. For example, when a user wants a low noise environment, the air conditioner can only be manually adjusted to the silent mode.
Accordingly, there is a need in the art for a new solution to the above problems.
Disclosure of Invention
In order to solve the above problems in the prior art, that is, to solve the technical problem that the conventional air conditioner cannot automatically reduce the noise of the air conditioner according to the indoor environment, the present invention provides a control method for reducing the noise of the air conditioner, wherein the control method comprises:
judging whether a person exists in the regulated room;
when people exist in the room, judging whether the light intensity in the room is higher than a preset light intensity;
when the light intensity in the room is higher than the preset light intensity, judging whether the heat emitted by the human body is lower than a preset heat value or not;
when the heat quantity dissipated by the human body is lower than the preset heat quantity value, judging whether the noise in the room is higher than a preset noise value; and
when the noise in the room is higher than the predetermined noise value, the frequency of a compressor of the air conditioner is lowered based on the heat emitted from the human body.
As can be understood by those skilled in the art, in the control method for reducing noise of an air conditioner of the present invention, it is first identified whether a person is present in a conditioned room. Only when there are people in the room will there be a particular need for a low noise level. After determining that a person is in the room, the control method further determines the light intensity in the room. When the light intensity in the room is higher than the predetermined light intensity, this means that the light in the room is bright and thus the person in the room should not be asleep. When the light intensity in the room is higher than the predetermined light intensity, the control method judges whether the amount of heat dissipated by the human body is lower than a predetermined heat value. If the amount of heat dissipated by the human body is below a predetermined amount of heat, it means that the person in the room is likely to be at rest or otherwise have a low level of activity. Corresponding to these conditions, it is likely that the people in the room need an environment with low noise values. Correspondingly, the control method starts to determine whether the noise in the room is above a predetermined noise value. When noise in a room is higher than a predetermined noise value, a frequency of a compressor of an air conditioner is lowered based on heat emitted from a human body. By the control method of the invention, the noise requirement of a user in a room can be automatically evaluated, the operation of the air conditioner is automatically controlled according to the noise requirement of the user and the actual noise level in the room, and the noise in the room is reduced by reducing the frequency of the compressor based on the heat emitted by a human body when necessary. The method can meet the requirement of the user on the temperature in the room, and can also meet the special requirement of the user on the noise value, thereby improving the life quality of the user.
In a preferred embodiment of the above control method for reducing noise of an air conditioner, when the light intensity in the room is equal to or lower than the predetermined light intensity, the control method controls the air conditioner to enter a mute mode. When the light intensity in the room is equal to or lower than the predetermined light intensity, it indicates that the light in the room is dim. In this case, the user is likely to be in a sleep or other resting state, and therefore the control method automatically turns the air conditioner to the silent mode, eliminating the need for manual adjustment by the user.
In a preferred technical solution of the above control method for reducing noise of an air conditioner, after the air conditioner enters a silent mode, the control method continuously monitors heat emitted from a human body, and adjusts a frequency of a compressor based on the heat emitted from the human body. In this way, a quiet, comfortable temperature environment is provided for the user to rest.
In a preferred embodiment of the above control method for reducing noise of an air conditioner, when no person is present in the room, the control method controls the air conditioner to operate in a predetermined mode. The control method controls the air conditioner to operate according to a preset mode (such as a mode preset by a user or a preset mode stored in a control system).
In a preferred embodiment of the above control method for reducing noise of an air conditioner, the step of determining whether a person is present in a conditioned room includes:
scanning the room with infrared rays and three-dimensionally imaging the scanned object to confirm the presence of a human analog;
when the human body similar object exists, judging whether the human body similar object generates heat by using infrared rays; and determining that a person is in the room if the human analog generates heat. Firstly, scanning by infrared rays and carrying out three-dimensional imaging on a scanned object to find a human body analog; when the existence of the human body analogue is confirmed, whether the human body analogue generates heat is confirmed by using infrared rays; only when the human body analog generates heat, the existence of a person in the room is confirmed. Obviously, the judgment method combines three-dimensional imaging and infrared thermal effect induction technology, and can accurately judge whether people exist in a room.
In a preferred embodiment of the above control method for reducing noise of an air conditioner, the step of determining whether the light intensity in the room is higher than a predetermined light intensity includes:
measuring the light intensity in the room by using a light sensor; and
comparing the measured light intensity with the predetermined light intensity to determine whether the light intensity in the room is higher than the predetermined light intensity. The existing light sensor is utilized to convert the light signal into an electric signal so as to conveniently confirm the light intensity in the room. The predetermined light intensity is a boundary line that distinguishes whether the light in the room is bright or dim.
In a preferred embodiment of the above control method for reducing noise of an air conditioner, the step of determining whether the amount of heat dissipated from the human body is less than a predetermined amount of heat includes:
measuring the heat emitted by the human body by using an infrared heat sensor; and
the measured heat amount is compared with a predetermined heat amount value to judge whether the amount of heat emitted from the human body is lower than the predetermined heat amount value. The heat emitted by the human body can be conveniently measured by utilizing the existing infrared heat sensor.
In a preferred embodiment of the above control method for reducing noise of an air conditioner, the step of determining whether the noise in the room is higher than a predetermined noise value includes:
measuring noise in the room; and
comparing the measured noise with the predetermined noise value to determine whether the noise in the room is higher than the predetermined noise value. The actual noise in the room is measured and compared to the expected noise value of the user to determine if air conditioning noise needs to be reduced.
In the above-mentioned prior art of the control method for reducing noise of an air conditioner, when the noise in the room is higher than a predetermined noise value, the control method further reduces the wind speed of a fan of the air conditioner based on heat emitted from a human body. The fan is another source of noise for the air conditioner. Therefore, by reducing the wind speed of the fan, the noise value of the air conditioner can be further reduced, and the expectation of the user for a lower noise value can be better satisfied.
In the above-described preferred embodiment of the control method for reducing noise of an air conditioner, the control method controls the air conditioner to operate in a predetermined mode when the amount of heat emitted from the human body is equal to or higher than a predetermined heat value. When the heat emitted by the human body is larger, the user is more sensitive to the temperature in the room at the moment, so that the air conditioner can operate according to a mode preset by the user without noise reduction operation.
In order to solve the above technical problems, the present invention also discloses an air conditioner having a compressor and using the above control method for reducing noise of an air conditioner to reduce noise of the air conditioner by reducing the frequency of the compressor under a prescribed condition. The air conditioner can automatically evaluate the noise requirement of a user in a room, automatically control the operation of the air conditioner according to the noise requirement of the user and the actual noise level in the room, and reduce the noise in the room in a mode of reducing the frequency of the compressor based on the heat emitted by a human body when necessary, thereby obviously improving the user experience.
Drawings
Preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:
FIG. 1 is a system schematic of an embodiment of the air conditioner of the present invention;
FIG. 2 is a flow chart of a control method for reducing noise of an air conditioner according to the present invention;
fig. 3 is a flowchart of an embodiment of a control method for reducing noise of an air conditioner according to the present invention.
Detailed Description
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.
In order to solve the technical problem that the existing air conditioner control system cannot automatically reduce the noise of the air conditioner according to the indoor environment, the invention provides a control method for reducing the noise of the air conditioner. The control method comprises the following steps: determining whether a person is present in the conditioned room (S1); when there is a person in the room, determining whether the light intensity in the room is higher than a predetermined light intensity (S2); judging whether the amount of heat emitted from the human body is less than a predetermined amount of heat when the intensity of light in the room is higher than a predetermined intensity of light (S3); judging whether noise in the room is higher than a predetermined noise value when the amount of heat emitted from the human body is lower than the predetermined heat value (S4); and reducing a frequency of a compressor of the air conditioner based on the heat emitted from the human body when the noise in the room is more than a predetermined noise value (S5). The control method can automatically evaluate the noise requirement of a user in a room, automatically control the operation of the air conditioner according to the noise requirement of the user and the actual noise level in the room, and reduce the noise in the room by reducing the frequency of the compressor based on the heat emitted by the human body when necessary.
The process steps referred to herein are not necessarily required to be in the order of their presentation unless specifically stated, e.g., some process steps may be performed concurrently.
Fig. 1 is a system diagram of an embodiment of an air conditioner of the present invention. The air conditioner 1 of the present invention includes, but is not limited to, an integral type air conditioner or a split type air conditioner, and has at least a cooling function or a cooling and heating function. As shown in fig. 1, in one or more embodiments, the air conditioner 1 includes a compressor 11, a four-way valve 12, an outdoor heat exchanger 13, an expansion valve 14, a liquid pipe cut-off valve 15, an indoor heat exchanger 16, a gas pipe cut-off valve 17, and a gas-liquid separator 18. These components are interconnected by refrigerant lines to form a refrigeration circuit that allows refrigerant (e.g., R134a) to circulate therethrough. The compressor 11, the four-way valve 12, the outdoor heat exchanger 13, the expansion valve 14, the liquid pipe cutoff valve 15, and the gas pipe cutoff valve 17 in combination may be referred to as an outdoor unit or an outdoor unit, and the indoor heat exchanger 16 is generally disposed in an indoor unit or an indoor unit. The outdoor heat exchanger 13 and the indoor heat exchanger 16 are each typically provided with a fan (not shown in the drawings). When the air conditioner 1 is operated, the fans are also operated to force air to flow over the outdoor heat exchanger 13 and the indoor heat exchanger 16, respectively. The four-way valve 12 has four ports: d port, C port, S port, and E port. An exhaust port of the compressor 11 is connected to a D port of the four-way valve 12 through an exhaust pipe 111, and a suction port of the compressor 11 is connected to an outlet of the gas-liquid separator 18 through a suction pipe 112; one interface tube of the outdoor heat exchanger 13 is connected to the C port of the four-way valve 12, and the other interface tube of the outdoor heat exchanger 13 is connected to the expansion valve 14; the S port of the four-way valve 12 is connected to the inlet of the gas-liquid separator 18; an E port of the four-way valve 12 is communicated with an air pipe of the indoor heat exchanger 16 through an air pipe stop valve 17; the expansion valve 14 communicates with the liquid pipe of the indoor heat exchanger 16 via a liquid pipe shut-off valve 15.
When the air conditioner operates in a refrigeration mode, the compressor 11 compresses a gas refrigerant from a low temperature and a low pressure to a high temperature and a high pressure; the high-temperature and high-pressure gas refrigerant is discharged from the discharge port of the compressor 11 to the discharge pipe 111, and then enters the four-way valve 12 from the D port. In the cooling mode, the D port communicates with the C port, and the S port communicates with the E port. Therefore, the high-temperature and high-pressure gas refrigerant exits the four-way valve 12 from the C port and flows into the outdoor heat exchanger 13. The exterior heat exchanger 13 functions as a condenser in the cooling mode, and thus the refrigerant of high temperature and high pressure is cooled to a liquid refrigerant of high temperature and high pressure in the exterior heat exchanger 13. The high-temperature and high-pressure liquid refrigerant is then throttled by an expansion valve 14 (e.g., a thermal expansion valve or an electronic expansion valve) into a low-temperature and low-pressure liquid refrigerant. The low-temperature low-pressure liquid refrigerant flows into the indoor heat exchanger 16 through the liquid pipe shutoff valve 15. The indoor heat exchanger 16 functions as an evaporator in the cooling mode. Therefore, the low-temperature low-pressure liquid refrigerant is evaporated into a low-temperature low-pressure gas refrigerant in the indoor heat exchanger 16. The low-temperature and low-pressure gas refrigerant flows into the four-way valve 12 through the E port, and then exits the four-way valve 12 through the S port and enters the gas-liquid separator 18. After gas-liquid separation, the low-temperature and low-pressure refrigerant is sucked and compressed by the compressor 11 through the suction pipe 112 to start a new cycle. In the heating mode, the flow direction of the refrigerant in the air conditioner is completely opposite to the flow direction during cooling. Therefore, in the heating mode, the D port of the four-way valve 12 is brought into communication with the E port, and the C port is brought into communication with the S port. A high-temperature and high-pressure gas refrigerant discharged from the compressor 11 flows into the indoor heat exchanger 16 serving as a condenser through the four-way valve 12 to heat indoor air; the condensed high-temperature and high-pressure liquid refrigerant is throttled by an expansion valve 14 and then flows into an outdoor heat exchanger 13 serving as an evaporator; the low-temperature and low-pressure gas refrigerant formed by evaporation enters the four-way valve 12 from the C port, and then exits from the S port and enters the gas-liquid separator 18. After gas-liquid separation, the low-temperature and low-pressure refrigerant is sucked and compressed by the compressor 11 through the suction pipe 112 to start a new cycle. Since both the compressor 11 and the indoor and outdoor fans are operated during the operation of the air conditioner 1, a noise source of the air conditioner is formed.
The air conditioner 1 of the present invention may reduce noise generated from the air conditioner by reducing the frequency of the compressor under a prescribed condition using the control method for reducing noise of the air conditioner of the present invention. Further, the air conditioner can reduce the noise of the air conditioner by reducing the wind speed of the fan.
Fig. 2 is a flowchart of a control method for reducing noise of an air conditioner according to the present invention. As shown in fig. 2, after the control method is started, in step S1, it is determined whether or not a person is present in the room to be conditioned. When it is determined that there is a person in the room, the control method proceeds to step S2, where it is determined whether the light intensity in the room is higher than a predetermined light intensity. The predetermined light intensity may be determined experimentally or set by the user. When the light intensity in the room is higher than the predetermined light intensity, the control method proceeds to step S3, where it is determined whether the amount of heat emitted from the human body is lower than a predetermined heat amount. The predetermined caloric value may be determined experimentally or set by a user. When the amount of heat emitted from the human body is lower than the predetermined heat value, the control method proceeds to step S4 to determine whether the noise in the room is higher than the predetermined noise value. The predetermined noise value may be a default value set in advance or may be set by the user. When the noise in the room is higher than the predetermined noise value, the control method proceeds to step S5 to decrease the frequency of the compressor of the air conditioner based on the heat emitted from the human body.
Fig. 3 is a flowchart of an embodiment of a control method for reducing noise of an air conditioner according to the present invention. As shown in fig. 3, after the air conditioner is turned on, the control method starts to determine whether or not there is a person in the conditioned room (step S11). In one or more embodiments, the control method scans the environment in a room using an infrared light sensing system, and performs three-dimensional stereo imaging of objects in the scanned room to determine whether human-like objects exist. If the human-shaped analog exists, the control method judges whether the human-shaped analog generates heat or not through infrared rays. If the human-shaped similar object generates heat, the existence of a person in the room can be judged. Whether people are in a room or not is judged by combining infrared thermal effect induction and three-dimensional imaging, and a more accurate judgment result can be obtained. Alternatively, an existing three-dimensional stereo imaging system may be used to scan objects in a room to determine whether a person is in the room. If it is confirmed that there is no person in the room, it is not necessary to control the noise in the room, and thus the control method proceeds to step S12 to control the air conditioner to operate in the preset mode. If it is confirmed that there is a person in the room, the control method proceeds to step S13 to measure the light intensity in the room. In one or more embodiments, a light sensor is used to measure the light intensity within a room. The light sensor is made by using photoelectric effect principle. The light in the room forms a projector, and a light receiver and a lens are mounted on the indoor unit or part of the room of the air conditioner. If the light in the room is bright, enough light is collected by the lens and transmitted to the light receiver. The light receiver converts light into an electrical signal according to the photoelectric effect. This electrical signal is then passed to the control system of the air conditioner in order to determine the actual light intensity in the room. In step S14, the control method compares the measured actual light intensity with the predetermined light intensity to determine whether the actual light intensity is lower than the predetermined light intensity. If the actual light intensity is less than the predetermined light intensity, the control method proceeds to step S15 to adjust the air conditioner to the mute mode. If the actual light intensity is not less than the predetermined light intensity, the control method proceeds to step S16 to measure the amount of heat emitted from the human body. In one or more embodiments, infrared thermal sensors (e.g., thermal sensors for measuring body temperature) are used to measure heat emitted by a human body. Alternatively, the control method may continuously monitor the amount of heat emitted from the human body after the air conditioner enters the silent mode, for example, using an infrared heat sensor, and adjust the frequency of the compressor according to the amount of heat emitted from the human body. The more heat the human body radiates, the higher the frequency of the compressor is; conversely, the less heat the human body is dissipating, the lower the frequency of the compressor. This provides a quiet, comfortable temperature environment for the user to rest.
As shown in fig. 3, the measured amount of heat dissipated from the human body is compared with a predetermined amount of heat in step S17. The predetermined caloric value may be determined based on a normal body temperature of the human body in a predetermined temperature environment (e.g., 22 ℃ to 25 ℃). If the measured heat amount is not less than the predetermined heat amount, which indicates that the user is more sensitive to the temperature control in the room at this time, the control method proceeds to step S18 to control the air conditioner to operate in the preset mode. If the measured heat is less than the predetermined heat value, control proceeds to step S19 to activate a noise measurement system (e.g., a noise meter) to measure the actual noise in the room. In step S20, the measured noise is compared with a predetermined noise value. In one or more embodiments, in the control system of the air conditioner, the noise value is divided into a plurality of steps in advance, for example, 10 steps, and the noise value may be from 55dB to 15 dB. The user can select different files according to the needs of the user. Once selected by the user, the control system automatically defaults to a noise value that does not exceed the set noise value when the user is using the air conditioner until the user changes the setting. Each person has a different sensitivity to sound and therefore this predetermined noise value scheme can meet the different noise requirements of different users. If the measured noise value is lower than the predetermined noise value, it is indicated that the actual noise value in the room satisfies the user' S demand, and thus the control method proceeds to step S18 to control the air conditioner to operate in the preset mode. If the measured noise value is not less than the predetermined noise value, indicating that the actual noise value in the room does not meet the user' S demand, the control method proceeds to step S21 to decrease the frequency of the compressor in order to decrease the noise generated by the air conditioner. In one or more embodiments, the frequency of the compressor is reduced based on the amount of heat dissipated by the human body. The lower the heat dissipated by the human body, the greater the magnitude of the reduction in the frequency of the compressor. Conversely, the higher the heat dissipated by the human body, the smaller the magnitude of the decrease in the compressor frequency.
In an alternative embodiment, the control method not only reduces the frequency of the compressor but also reduces the rotational speed of the fan in the condition that the measured noise level is not lower than the predetermined noise level, thereby further reducing the noise in the room until the noise level reaches the predetermined level. Therefore, the control method of the invention can create a comfortable and convenient living environment for users.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
Claims (10)
1. A control method for reducing noise of an air conditioner, the control method comprising:
judging whether a person exists in the regulated room;
when people exist in the room, judging whether the light intensity in the room is higher than a preset light intensity;
when the light intensity in the room is higher than the preset light intensity, judging whether the heat emitted by the human body is lower than a preset heat value or not;
when the heat quantity dissipated by the human body is lower than the preset heat quantity value, judging whether the noise in the room is higher than a preset noise value; and
when the noise in the room is higher than the predetermined noise value, reducing a frequency of a compressor of the air conditioner based on heat emitted from a human body.
2. The control method for reducing noise of an air conditioner according to claim 1, wherein the control method controls the air conditioner to enter a mute mode when the light intensity in the room is equal to or lower than the predetermined light intensity.
3. The control method for reducing noise of an air conditioner according to claim 1, wherein the control method controls the air conditioner to operate in a predetermined mode when no person is present in the room.
4. The control method for reducing noise of an air conditioner according to claim 1, wherein the step of determining whether a person is present in the conditioned room comprises:
scanning the room with infrared rays and three-dimensionally imaging the scanned object to confirm the presence of a human analog;
when the human body similar object exists, judging whether the human body similar object generates heat by using infrared rays; and
and if the human body analog generates heat, determining that the person is in the room.
5. The control method for reducing noise of an air conditioner according to claim 1, wherein the step of determining whether the light intensity in the room is higher than a predetermined light intensity comprises:
measuring the light intensity in the room by using a light sensor; and
comparing the measured light intensity with the predetermined light intensity to determine whether the light intensity in the room is higher than the predetermined light intensity.
6. The control method for reducing noise of an air conditioner according to claim 1, wherein the step of judging whether the amount of heat dissipated from the human body is less than a predetermined heat value includes:
measuring the heat emitted by the human body by using an infrared heat sensor; and
the measured heat amount is compared with a predetermined heat amount value to judge whether the amount of heat emitted from the human body is lower than the predetermined heat amount value.
7. The control method for reducing noise of an air conditioner according to claim 1, wherein the step of determining whether the noise in the room is higher than a predetermined noise value includes:
measuring noise in the room; and
comparing the measured noise with the predetermined noise value to determine whether the noise in the room is higher than the predetermined noise value.
8. The control method for reducing noise of an air conditioner according to claim 1, wherein when noise in the room is higher than a predetermined noise value, the control method further reduces a wind speed of a fan of the air conditioner based on heat emitted from a human body.
9. The control method for reducing noise of an air conditioner according to claim 1, wherein the control method controls the air conditioner to operate in a predetermined mode when the amount of heat emitted from the human body is equal to or higher than a predetermined heat value.
10. An air conditioner, characterized in that the air conditioner has a compressor, and the air conditioner uses the control method for reducing noise of an air conditioner according to any one of claims 1 to 9 to reduce the noise of the air conditioner by reducing the frequency of the compressor under prescribed conditions.
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| CN202011179670.6A CN112303849B (en) | 2020-10-29 | 2020-10-29 | Control method for reducing noise of air conditioner and air conditioner using same |
| PCT/CN2021/099544 WO2021233464A1 (en) | 2020-10-29 | 2021-06-11 | Control method for reducing air conditioner noise, and air conditioner using same |
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| CN202011179670.6A CN112303849B (en) | 2020-10-29 | 2020-10-29 | Control method for reducing noise of air conditioner and air conditioner using same |
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| CN112303849A (en) | 2021-02-02 |
| WO2021233464A1 (en) | 2021-11-25 |
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Effective date of registration: 20230301 Address after: No. 1, 2 and 3 Haier Innovation Industrial Park, 3456 Shixin Road, Hefei Economic and Technological Development Zone, Anhui Province, 230092 Patentee after: HEFEI HAIER AIR CONDITIONING ELECTRONIC Co.,Ltd. Address before: 266101 Haier Industrial Park, 1 Haier Road, Laoshan District, Shandong, Qingdao Patentee before: QINGDAO HAIER AIR-CONDITIONING ELECTRONIC Co.,Ltd. Patentee before: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. Patentee before: Haier Zhijia Co.,Ltd. |