CN113883694B - Air conditioner and control method thereof - Google Patents
Air conditioner and control method thereof Download PDFInfo
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- CN113883694B CN113883694B CN202111273849.2A CN202111273849A CN113883694B CN 113883694 B CN113883694 B CN 113883694B CN 202111273849 A CN202111273849 A CN 202111273849A CN 113883694 B CN113883694 B CN 113883694B
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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
- F24F11/54—Control or safety arrangements characterised by user interfaces or communication using one central controller connected to several sub-controllers
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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
- 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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
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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
- F24F2110/50—Air quality properties
- F24F2110/65—Concentration of specific substances or contaminants
- F24F2110/70—Carbon dioxide
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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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- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses an air conditioner and a control method thereof, wherein the air conditioner comprises an outdoor unit and an indoor unit, and the outdoor unit is provided with an outdoor temperature sensor; the indoor unit includes: casing, new trend device, first fan, indoor heat exchanger, carbon dioxide concentration sensor, indoor temperature sensor and controller, the casing is provided with indoor air intake, first air outlet and second air outlet, and new trend device selectively is linked together with first air outlet and second air outlet, and the controller is connected with outdoor temperature sensor, first fan, new trend device, carbon dioxide concentration sensor and indoor temperature sensor electricity respectively. Like this, through letting the air conditioner can regulate and control the air-out position of new trend device according to the detection condition of carbon dioxide concentration sensor, outdoor temperature sensor and indoor temperature sensor to let the air conditioner when blowing the new wind to indoor, not only can reduce indoor carbon dioxide concentration, can also compromise the travelling comfort of new trend device in the use.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioner and a control method thereof.
Background
In the prior art, the phenomenon of unsmooth breathing, dizziness and the like of a human body can be felt due to the fact that the concentration of the indoor carbon dioxide is too high, and the health of the human body is affected. Therefore, the use of a fresh air device to reduce the concentration of carbon dioxide in a room is becoming an increasingly important technical means. In the related art, the air outlet of the fresh air device does not consider the indoor temperature, so that a large temperature difference exists between the air outlet of the fresh air device and the indoor temperature, and the human body feels uncomfortable.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, an object of the present invention is to provide an air conditioner, in which the fresh air device is more comfortable to use.
According to an embodiment of the invention, an air conditioner includes: the outdoor unit is provided with an outdoor temperature sensor; the indoor unit includes: the novel air conditioner comprises a shell, a fresh air device, a first fan, an indoor heat exchanger, a carbon dioxide concentration sensor, an indoor temperature sensor and a controller, wherein the shell is provided with an indoor air inlet, a first air outlet and a second air outlet, the fresh air device is selectively communicated with the first air outlet and the second air outlet, the first fan and the indoor heat exchanger are arranged on the upper portion of the fresh air device, the carbon dioxide concentration sensor, the indoor temperature sensor and the controller are arranged in the shell, the controller is respectively connected with the outdoor temperature sensor, the first fan, the fresh air device, the carbon dioxide concentration sensor and the indoor temperature sensor, wherein the carbon dioxide concentration sensor detects that the indoor carbon dioxide concentration is W, the concentration preset value of the air conditioner is W1, the outdoor temperature detected by the outdoor temperature sensor and the indoor temperature detected by the indoor temperature sensor are T, the first preset temperature difference of the air conditioner is T1, when the W1 is more than T1, the controller is more than T1, the first air conditioner is communicated with the first air outlet and the second air outlet is more than or equal to W1, and the first air outlet is communicated with the first air outlet.
According to the air conditioner provided by the embodiment of the invention, the first air outlet and the second air outlet are arranged in the air conditioner, so that the air conditioner can regulate and control the air outlet position of the fresh air device according to the detection conditions of the carbon dioxide concentration sensor, the outdoor temperature sensor and the indoor temperature sensor, and when the air conditioner blows fresh air indoors, the concentration of indoor carbon dioxide can be reduced, the comfort of the fresh air device in the use process can be considered, and the user experience when a user uses the air conditioner is improved.
In some embodiments, the first air outlet and the second air outlet are both located at a front side of the casing, and the second air outlet is located above the first air outlet and opposite to the first fan.
In some embodiments, the casing is further provided with a third air outlet, the third air outlet is disposed at the top of the casing, and the fresh air device is selectively communicated with the third air outlet.
In some embodiments, the second predetermined temperature difference of the air conditioner is T2, when W > W1 and T1 < T.ltoreq.T2, the controller controls the fresh air device to communicate with the second air outlet and open the second air outlet, and when W > W1 and T > T2, the controller controls the fresh air device to communicate with the third air outlet and open the third air outlet.
In some embodiments, the indoor unit further comprises: the first opening and closing device, the second opening and closing device and the third opening and closing device, wherein the first opening and closing device is arranged at the first air outlet, the second opening and closing device is arranged at the second air outlet, the third opening and closing device is arranged at the third air outlet, and the first opening and closing device, the second opening and the third opening and closing device are electrically connected with the controller.
In some embodiments, the fresh air device comprises: the novel air duct is connected with the air duct piece, the air duct piece is arranged in the casing, the second fan is arranged in the air duct piece, the air duct piece is provided with a first fresh air port and a second fresh air port, the first fresh air port is communicated with the first air outlet, and the fourth opening and closing device is arranged in the second fresh air port and is electrically connected with the controller so as to be selectively communicated with the second air outlet.
In some embodiments, the fresh air device further comprises: and the fifth opening and closing device is arranged at the joint of the fresh air pipe and the air duct piece and is electrically connected with the controller so that the fresh air pipe is selectively communicated with the air duct piece.
The control method of the air conditioner according to any one of the embodiments of the present invention includes the following steps:
detecting the concentration of carbon dioxide in a room;
judging the relation between the carbon dioxide concentration W and the concentration preset value W1: when W is more than W1, opening the fresh air device;
collecting indoor temperature and outdoor temperature, and calculating a temperature difference value T;
judging the relation between the temperature difference T and the first preset temperature difference T1:
when T is less than or equal to T1, the controller controls the fresh air device to be communicated with the first air outlet and opens the first air outlet,
when T is more than T1, the controller controls the fresh air device to be communicated with the second air outlet and opens the second air outlet.
According to the control method of the air conditioner, provided by the embodiment of the invention, the indoor carbon dioxide concentration of the air conditioner can be well reduced in the using process, and the indoor comfort can be kept relatively high in the using process.
In some embodiments, a third air outlet is further provided at the top of the casing, and the control method further includes the following steps:
judging the relation between the temperature difference T and the first preset temperature difference T2:
when T1 is more than or equal to T2, the controller controls the fresh air device to be communicated with the second air outlet and opens the second air outlet,
when T is more than T2, the controller controls the fresh air device to be communicated with the third air outlet and opens the third air outlet.
In some embodiments, the fresh air device comprises: the novel air duct, the air duct piece, the second fan, the fourth opening and closing device and the fifth opening and closing device are arranged in the shell, and the second fan is arranged in the air duct piece;
relationship between the determination carbon dioxide concentration W and the concentration predetermined value W1: when W is more than W1, in the step of opening the fresh air device,
the fresh air device opens the second fan and the fifth opening and closing device so that the fresh air pipe is communicated with the air duct piece;
when T is more than T1, the controller controls the fresh air device to be communicated with the second air outlet and opens the second air outlet,
the fresh air device is opened by the fourth opening and closing device, so that the fresh air device is communicated with the second fresh air port.
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 foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
fig. 1 is a schematic view of an air conditioner according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating a control method of an air conditioner according to an embodiment of the present invention.
Reference numerals:
the indoor unit 10 is installed in a room,
the casing 100, the first air outlet 110, the second air outlet 120, the third air outlet 130,
First opening/closing device 310, second opening/closing device 320, and third opening/closing device 330.
Detailed Description
Embodiments of the present invention will be described in detail below, by way of example with reference to the accompanying drawings.
An air conditioner according to an embodiment of the present invention is described below with reference to fig. 1 to 2, including: an outdoor unit and an indoor unit.
Specifically, the outdoor unit is provided with an outdoor temperature sensor; the indoor unit 10 includes: the fresh air device 200 is selectively communicated with the first air outlet 110 and the second air outlet 120, the first fan and the indoor heat exchanger are arranged on the upper portion of the fresh air device 200, the carbon dioxide concentration sensor, the indoor temperature sensor and the controller are arranged in the casing 100, and the controller is respectively electrically connected with the outdoor temperature sensor, the first fan, the fresh air device 200, the carbon dioxide concentration sensor and the indoor temperature sensor.
It should be noted that, the outdoor temperature sensor is suitable for detecting outdoor temperature, the indoor temperature sensor is suitable for detecting indoor temperature, the carbon dioxide concentration sensor is suitable for detecting indoor carbon dioxide concentration, the detection result is transmitted into the controller, and the fresh air device 200 is controlled according to the detection result, so that the fresh air performance of the air conditioner can be improved, and the use performance of the air conditioner felt by a user is more comfortable.
The carbon dioxide concentration sensor detects that the indoor carbon dioxide concentration is W, the concentration preset value of the air conditioner is W1, the difference between the outdoor temperature detected by the outdoor temperature sensor and the indoor temperature detected by the indoor temperature sensor is T, the first preset temperature difference of the air conditioner is T1, when W is more than W1 and T is less than or equal to T1, the controller controls the fresh air device 200 to be communicated with the first air outlet 110 and open the first air outlet 110, and when W is more than W1 and T is more than T1, the controller controls the fresh air device 200 to be communicated with the second air outlet 120 and open the second air outlet 120.
It will be appreciated that when the carbon dioxide concentration W detected by the carbon dioxide concentration sensor is greater than the preset concentration value W1, it is indicated that the indoor carbon dioxide concentration is too high, and the fresh air device 200 needs to be opened to increase the circulation of the indoor air so as to reduce the indoor carbon dioxide concentration. And then determining the service performance of the fresh air device 200 according to the comparison relation between the temperature difference T of the outdoor temperature sensor and the indoor temperature sensor and the first preset temperature difference T1, so that the comfort of the air conditioner which can be perceived by a user is improved. When T is less than or equal to T1, the difference between the indoor temperature and the outdoor temperature is smaller, the fresh air device 200 can perform higher-power operation so that the concentration of the indoor carbon dioxide can be reduced at a higher rate, the indoor environment can reach the requirement more quickly, and the comfort of a user in using the air conditioner is improved; when T > T1, a large temperature difference is provided between the indoor temperature and the outdoor temperature, so that the use feeling of the air conditioner is reduced when the fresh air device 200 is used at high power, and the air outlet speed of the fresh air device 200 needs to be reduced, so that the influence on the indoor environment is reduced, and the comfort is improved.
According to the air conditioner provided by the embodiment of the invention, the first air outlet 110 and the second air outlet 120 are arranged in the air conditioner, so that the air outlet position of the fresh air device 200 can be regulated and controlled according to the detection conditions of the carbon dioxide concentration sensor, the outdoor temperature sensor and the indoor temperature sensor, when the air conditioner blows fresh air indoors, the indoor carbon dioxide concentration can be reduced, the comfort of the fresh air device 200 in the use process can be considered, and the user experience when a user uses the air conditioner is improved.
In some embodiments, as shown in fig. 1, the first air outlet 110 and the second air outlet 120 are both located on the front side of the casing 100, and the second air outlet 120 is located above the first air outlet 110 and opposite to the first fan.
It can be appreciated that, since the first air outlet 110 and the second air outlet 120 are both located at the front side of the casing 100, and the first air outlet 110 is disposed closer to the lower side, the first air outlet 110 is disposed closer to the fresh air device 200, and the second air outlet 120 is disposed farther than the fresh air device 200. Therefore, the flow rate of the fresh air flowing from the second air outlet 120 is smaller than that of the fresh air flowing from the first air outlet 110, so that the air conditioner can adjust the air outlet position of the fresh air device 200 according to the situation, and the fresh air device 200 can reduce the concentration of carbon dioxide better and make the use feeling of the fresh air device 200 more comfortable, thereby improving the use performance of the air conditioner.
In some embodiments, as shown in fig. 1, the enclosure 100 is further provided with a third air outlet 130, the third air outlet 130 is disposed at the top of the enclosure 100, and the fresh air device 200 is selectively communicated with the third air outlet 130. It can be appreciated that the third air outlet 130 is located further from the fresh air device 200 than the second air outlet 120, so that the fresh air flow rate of the fresh air driven by the fresh air device 200 is lower when the fresh air flows through the third air outlet 130, and the fresh air flowing through the third air outlet 130 has higher comfort.
In some embodiments, as shown in fig. 1 and 2, the second predetermined temperature difference of the air conditioner is T2, when W > W1 and T1 < t+.t2, the controller controls the fresh air device 200 to communicate with the second air outlet 120 and open the second air outlet 120, and when W > W1 and T > T2, the controller controls the fresh air device 200 to communicate with the third air outlet 130 and open the third air outlet 130.
It can be appreciated that in some specific cases, the air outlet position of the fresh air device 200 is determined by comparing the temperature difference T between the outdoor temperature sensor and the indoor temperature sensor with the first preset temperature difference T1 and the second preset temperature difference T2, when the temperature difference T is between the first preset temperature difference T1 and the second preset temperature difference T2, the temperature difference between the indoor temperature and the outdoor temperature is moderate, and the fresh air of the fresh air device 200 can be sent out from the second air outlet 120, so that the influence of the fresh air device 200 on the indoor temperature is relatively low, and the use of the fresh air device 200 has higher comfort; when the temperature difference T is greater than the second preset temperature difference T2, a larger temperature difference between the indoor temperature and the outdoor temperature is indicated, so that the wind speed of the fresh air device 200 needs to be reduced, the influence of the fresh air device 200 on the indoor temperature in the use process is reduced, and the comfort of the user using the air conditioner is improved.
In some embodiments, as shown in fig. 1, the indoor unit 10 further includes: the first opening/closing device 310, the second opening/closing device 320, and the third opening/closing device 330, the first opening/closing device 310 is disposed at the first air outlet 110, the second opening/closing device 320 is disposed at the second air outlet 120, the third opening/closing device 330 is disposed at the third air outlet 130, and the first opening/closing device 310, the second opening/closing device 320, and the third opening/closing device 330 are electrically connected to the controller.
In this way, the opening and closing of the first, second, and third opening and closing devices 310, 320, and 330 are controlled by using the controller to control the opening and closing of the first, second, and third air outlets 110, 120, and 130. In this way, the air outlet of the fresh air device 200 is more simple and convenient to adjust, so that the air outlet of the fresh air device 200 can be more simply adjusted, the fresh air outlet of the air conditioner can be adjusted according to the situation, and the air conditioner has higher use comfort.
In some embodiments, as shown in fig. 1, the fresh air device 200 includes: the fresh air duct 210, the air duct member 220, the second fan 230 and the fourth opening and closing device 240, the fresh air duct 210 is connected with the air duct member 220, the air duct member 220 is arranged in the casing 100, the second fan 230 is arranged in the air duct member 220, the air duct member 220 is provided with a first fresh air port 221 and a second fresh air port 222, the first fresh air port 221 is communicated with the first air outlet 110, and the fourth opening and closing device 240 is arranged in the second fresh air port 222 and is electrically connected with the controller so as to be selectively communicated with the second air outlet 120.
It can be appreciated that the first fan is suitable for sending fresh air into the second fan 230 through the fresh air pipe 210, so that the second fan 230 can discharge fresh air through the first fresh air port 221 or the second fresh air port 222 according to requirements, and the air conditioner can adjust the air outlet position according to indoor conditions, so that the use comfort of the air conditioner is improved. Meanwhile, the first fresh air port 221 is communicated with the first air outlet 110, so that fresh air is directly discharged through the first air outlet 110, the fresh air has higher speed, the air conditioner has higher ventilation efficiency, the indoor carbon dioxide concentration can be rapidly reduced, and the air conditioner has higher comfortableness. The fourth opening and closing device 240 is provided on the second air outlet 222, and whether the fresh air flows from the second air outlet 120 can be controlled by controlling the opening and closing of the fourth opening and closing device 240, so that the fresh air outlet of the air conditioner is more reliable.
In some embodiments, as shown in fig. 1, the fresh air device 200 further includes: the fifth opening and closing device 250, the fifth opening and closing device 250 is disposed at the junction of the fresh air duct 210 and the air duct 220, and the fifth opening and closing device 250 is electrically connected to the controller so that the fresh air duct 210 is selectively communicated with the air duct 220.
It can be understood that the fifth opening and closing device 250 is disposed at the connection position between the fresh air duct 210 and the air duct 220, and the opening and closing of the fifth opening and closing device 250 can control the performance strength of the fresh air device 200, so that the air outlet of the fresh air device 200 can have higher comfort, and the use feeling of the air conditioner is improved. Meanwhile, the controller is connected with the fifth opening and closing device 250, so that the fifth opening and closing device 250 is simpler and more convenient to use, the fresh air device 200 is convenient to control, and the using process of the air conditioner is simplified.
As shown in fig. 1 and 2, the control method of an air conditioner according to any one of the above embodiments of the present invention includes the steps of:
detecting the concentration of carbon dioxide in a room;
judging the relation between the carbon dioxide concentration W and the concentration preset value W1: when W is more than W1, the fresh air device 200 is turned on;
collecting indoor temperature and outdoor temperature, and calculating a temperature difference value T;
judging the relation between the temperature difference T and the first preset temperature difference T1:
when T is less than or equal to T1, the controller controls the fresh air device 200 to be communicated with the first air outlet 110 and opens the first air outlet 110,
when T > T1, the controller controls the fresh air device 200 to be communicated with the second air outlet 120 and opens the second air outlet 120.
It can be understood that, during the use of the air conditioner, the carbon dioxide concentration sensor is turned on to detect the indoor carbon dioxide concentration, and when the detected carbon dioxide concentration W is smaller than the concentration preset value W1, it indicates that the indoor carbon dioxide concentration is lower, the indoor environment is better, and the fresh air device 200 does not need to be started; when the detected carbon dioxide concentration W is greater than the concentration preset value W1, the indoor carbon dioxide concentration in the specification is higher, the indoor environment is worse, and the fresh air device 200 needs to be started to update the indoor air, so that the indoor carbon dioxide concentration is reduced.
Meanwhile, the fresh air device 200 has a plurality of air outlets, and the plurality of air outlets represent that the fresh air device 200 has a plurality of gears, and the indoor temperature sensor and the outdoor temperature sensor need to be opened to detect the indoor temperature and the outdoor temperature, and the gears of the fresh air device 200 are selected according to the indoor temperature and the outdoor temperature. When the temperature difference between the indoor temperature and the outdoor temperature is smaller than the first preset temperature difference, the difference between the indoor temperature and the outdoor temperature is not large, and the indoor temperature is not greatly influenced after the fresh air device 200 is started, so that the fresh air rate of the fresh air device 200 can be increased, namely the first air outlet 110 is opened, the air outlet of the fresh air device 200 can circulate through the first air outlet 110, the concentration of the indoor carbon dioxide can be quickly reduced, and the working efficiency of the fresh air device 200 is improved; and when the temperature difference between the indoor temperature and the outdoor temperature is greater than the first predetermined temperature difference; it is explained that there is a certain temperature difference between the indoor temperature and the outdoor temperature, when the fresh air device 200 is started with a relatively high power, the indoor temperature is obviously changed, so that the use comfort of the air conditioner is reduced, and therefore, the air outlet rate of the fresh air device 200 needs to be regulated down, that is, the second air outlet 120 is opened, the air outlet of the fresh air device 200 can circulate through the second air outlet 120, and therefore, the influence of the fresh air device 200 on the indoor temperature is reduced, so that the comfort is improved.
Therefore, through the control method, the indoor carbon dioxide concentration of the air conditioner can be well reduced in the using process, and the indoor comfort can be kept relatively high in the using process.
In some embodiments, as shown in fig. 1 and 2, the top of the casing 100 is further provided with a third air outlet 130, and the control method further includes the following steps:
judging the relation between the temperature difference T and the first preset temperature difference T2:
when T1 is more than or equal to T2, the controller controls the fresh air device 200 to be communicated with the second air outlet 120 and opens the second air outlet 120,
when T > T2, the controller controls the fresh air device 200 to be communicated with the third air outlet 130 and opens the third air outlet 130.
It is understood that when the temperature difference between the indoor temperature and the outdoor temperature is greater than the first predetermined temperature difference, the relationship between the temperature difference between the indoor temperature and the outdoor temperature and the second predetermined temperature difference may also be determined to further adjust the fresh air device 200. When the temperature difference between the indoor temperature and the outdoor temperature is smaller than the second preset temperature difference, the second air outlet 120 is opened, so that the fresh air driven by the fresh air device 200 can enter the indoor environment through the second air outlet 120 to update the indoor air; when the temperature difference between the indoor temperature and the outdoor temperature is greater than the second preset temperature difference, a larger difference is provided between the indoor temperature and the outdoor temperature, so that the operation of the fresh air device 200 can cause a larger influence on the indoor environment to reduce the comfort of the indoor environment, and therefore, the fresh air device 200 is connected with the third air outlet 130, so that the third air outlet 130 can obviously reduce the fresh air flow rate, reduce the influence of the fresh air device 200 on the indoor environment, and improve the comfort.
In some embodiments, as shown in fig. 1 and 2, the fresh air device 200 includes: the novel air duct 210, the air duct member 220, the second fan 230, the fourth opening and closing device 240 and the fifth opening and closing device 250, the air duct member 220 is arranged in the machine shell 100, and the second fan 230 is arranged in the air duct member 220;
relationship between the determination carbon dioxide concentration W and the concentration predetermined value W1: when W is more than W1, in the step of opening the fresh air device 200,
the fresh air device 200 opens the second fan 230 and the fifth opening and closing device 250 so that the fresh air duct 210 communicates with the air duct member 220;
when T is greater than T1, the controller controls the fresh air device 200 to be communicated with the second air outlet 120 and opens the second air outlet 120,
the fresh air device 200 opens the fourth opening and closing device 240 such that the fresh air device 200 communicates with the second fresh air port 222.
It will be appreciated that, after the carbon dioxide concentration W detected by the carbon dioxide concentration sensor is greater than the concentration preset value W1, the fresh air device 200 is started, so that the fresh air device 200 can discharge fresh air through the adapted air outlet according to the control of the controller, and meanwhile, the fifth opening and closing device 250 is opened, so that fresh air can enter the fresh air device 200 through the fresh air pipe 210 and be introduced into the indoor environment through the second fan 230, so as to reduce the concentration of indoor carbon dioxide.
Meanwhile, when T > T1, the first opening and closing device 310 is closed to close the first air outlet 110 and control the fourth opening and closing device 240 to open, so that the fresh air can be discharged along the second fresh air outlet 222 under the driving of the second fan 230, and the second opening and closing device 320 or the third opening and closing device 330 is opened according to the subsequent judgment, so that the fresh air can be discharged through the second air outlet 120 or the third air outlet 130, so that the fresh air device 200 has less influence on the indoor environment, and the indoor comfort is improved.
Further, after the fresh air device 200 is opened, the air conditioner can continuously detect the indoor temperature and the outdoor temperature, and control the fresh air outlet of the fresh air device 200 according to the temperature difference value, so that the indoor comfort can be kept high while the carbon dioxide is reduced, and the service performance of the air conditioner is improved.
Meanwhile, the carbon dioxide concentration sensor is also continuously used for detecting the indoor carbon dioxide concentration, and when the concentration of the indoor carbon dioxide is detected to be lower than the preset concentration, the fresh air device 200 is closed, so that the use cost of the air conditioner is reduced.
Other constructions and operations of the air conditioner according to the embodiment of the present invention are known to those skilled in the art, and will not be described in detail herein.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means 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, schematic representations of the above terms do not necessarily refer to the same embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
Claims (9)
1. An air conditioner, comprising:
the outdoor unit is provided with an outdoor temperature sensor;
an indoor unit, the indoor unit comprising: the machine comprises a shell, a fresh air device, a first fan, an indoor heat exchanger, a carbon dioxide concentration sensor, an indoor temperature sensor and a controller, wherein the shell is provided with an indoor air inlet, a first air outlet and a second air outlet, the fresh air device is selectively communicated with the first air outlet and the second air outlet, the first fan and the indoor heat exchanger are arranged on the upper part of the fresh air device, the carbon dioxide concentration sensor, the indoor temperature sensor and the controller are arranged in the shell, the controller is respectively electrically connected with the outdoor temperature sensor, the first fan, the fresh air device, the carbon dioxide concentration sensor and the indoor temperature sensor,
the carbon dioxide concentration sensor detects that the indoor carbon dioxide concentration is W, the concentration preset value of the air conditioner is W1, the difference value between the outdoor temperature detected by the outdoor temperature sensor and the indoor temperature detected by the indoor temperature sensor is T, the first preset temperature difference value of the air conditioner is T1, when W is more than W1 and T is less than or equal to T1, the controller controls the fresh air device to be communicated with the first air outlet and open the first air outlet, and when W is more than W1 and T is more than T1, the controller controls the fresh air device to be communicated with the second air outlet and open the second air outlet;
the first air outlet and the second air outlet are both positioned on the front side of the casing, and the second air outlet is positioned above the first air outlet and is opposite to the first fan.
2. The air conditioner of claim 1, wherein the housing is further provided with a third air outlet, the third air outlet is disposed at a top of the housing, and the fresh air device is selectively communicated with the third air outlet.
3. The air conditioner according to claim 2, wherein the second predetermined temperature difference value of the air conditioner is T2, and when W > W1 and T1 < T2, the controller controls the fresh air device to communicate with the second air outlet and open the second air outlet, and when W > W1 and T > T2, the controller controls the fresh air device to communicate with the third air outlet and open the third air outlet.
4. The air conditioner of claim 2, wherein the indoor unit further comprises: the first opening and closing device, the second opening and closing device and the third opening and closing device, wherein the first opening and closing device is arranged at the first air outlet, the second opening and closing device is arranged at the second air outlet, the third opening and closing device is arranged at the third air outlet, and the first opening and closing device, the second opening and the third opening and closing device are electrically connected with the controller.
5. The air conditioner of claim 1, wherein the fresh air device comprises: the novel air duct is connected with the air duct piece, the air duct piece is arranged in the casing, the second fan is arranged in the air duct piece, the air duct piece is provided with a first fresh air port and a second fresh air port, the first fresh air port is communicated with the first air outlet, and the fourth opening and closing device is arranged in the second fresh air port and is electrically connected with the controller so as to be selectively communicated with the second air outlet.
6. The air conditioner of claim 5, wherein the fresh air device further comprises: and the fifth opening and closing device is arranged at the joint of the fresh air pipe and the air duct piece and is electrically connected with the controller so that the fresh air pipe is selectively communicated with the air duct piece.
7. A control method of an air conditioner according to any one of claims 1 to 6, comprising the steps of:
detecting the concentration of carbon dioxide in a room;
judging the relation between the carbon dioxide concentration W and the concentration preset value W1: when W is more than W1, opening the fresh air device;
collecting indoor temperature and outdoor temperature, and calculating a temperature difference value T;
judging the relation between the temperature difference T and the first preset temperature difference T1:
when T is less than or equal to T1, the controller controls the fresh air device to be communicated with the first air outlet and opens the first air outlet,
when T is more than T1, the controller controls the fresh air device to be communicated with the second air outlet and opens the second air outlet.
8. The control method of an air conditioner according to claim 7, wherein a third air outlet is further provided at a top of the cabinet, the control method further comprising the steps of:
judging the relation between the temperature difference T and the first preset temperature difference T2:
when T1 is more than or equal to T2, the controller controls the fresh air device to be communicated with the second air outlet and opens the second air outlet,
when T is more than T2, the controller controls the fresh air device to be communicated with the third air outlet and opens the third air outlet.
9. The control method of an air conditioner according to claim 7, wherein the fresh air device comprises: the novel air duct, the air duct piece, the second fan, the fourth opening and closing device and the fifth opening and closing device are arranged in the shell, the second fan is arranged in the air duct piece, and the air duct piece is provided with a second fresh air opening;
relationship between the determination carbon dioxide concentration W and the concentration predetermined value W1: when W is more than W1, in the step of opening the fresh air device,
the fresh air device opens the second fan and the fifth opening and closing device so that the fresh air pipe is communicated with the air duct piece;
when T is more than T1, the controller controls the fresh air device to be communicated with the second air outlet and opens the second air outlet,
the fresh air device is opened by the fourth opening and closing device, so that the fresh air device is communicated with the second fresh air port.
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| CN107702213A (en) * | 2017-09-30 | 2018-02-16 | 广东美的制冷设备有限公司 | Air conditioner and its control method and device |
| CN108489039A (en) * | 2018-03-07 | 2018-09-04 | 广东美的制冷设备有限公司 | Air-conditioner control method, air conditioner and readable storage medium storing program for executing |
| CN110762611A (en) * | 2018-07-09 | 2020-02-07 | 青岛海尔空调器有限总公司 | Fresh air cabinet type air conditioner indoor unit |
| CN108954657B (en) * | 2018-08-03 | 2019-08-27 | 奥克斯空调股份有限公司 | A kind of body-sensing air quantity adjusting method, device and air conditioner |
| CN209459075U (en) * | 2018-11-12 | 2019-10-01 | 青岛海尔空调器有限总公司 | Air conditioner indoor unit |
| CN109579208B (en) * | 2018-12-04 | 2021-06-15 | 远大洁净空气科技有限公司 | Comfortable energy-saving fresh air machine and adjusting method thereof |
| CN109780681B (en) * | 2019-01-31 | 2021-06-25 | 广东美的制冷设备有限公司 | Air conditioner and control method thereof |
| CN111237876A (en) * | 2020-01-17 | 2020-06-05 | 宁波奥克斯电气股份有限公司 | Fresh air conditioner and comfortable air supply control method thereof |
| CN213362679U (en) * | 2020-06-24 | 2021-06-04 | 全厚志 | Fresh air conditioner |
| CN112665130B (en) * | 2020-12-21 | 2022-05-27 | 珠海格力电器股份有限公司 | Control method of air conditioner and air conditioner |
| CN112710028A (en) * | 2020-12-29 | 2021-04-27 | 四川长虹空调有限公司 | Air conditioner indoor unit and fresh air exchange control method thereof |
| CN113091247A (en) * | 2021-03-26 | 2021-07-09 | 青岛海尔空调器有限总公司 | Fresh air control method and device and fresh air system |
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